CN105213077A - One covers net support - Google Patents
One covers net support Download PDFInfo
- Publication number
- CN105213077A CN105213077A CN201510512007.6A CN201510512007A CN105213077A CN 105213077 A CN105213077 A CN 105213077A CN 201510512007 A CN201510512007 A CN 201510512007A CN 105213077 A CN105213077 A CN 105213077A
- Authority
- CN
- China
- Prior art keywords
- expandable stent
- self
- wave mode
- twine
- dictyosome
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The present invention relates to technical field of medical instruments, specifically one covers net support, and comprise self-expandable stent and cover net, the described net that covers comprises ring body and dictyosome, wherein the nearly heart side of ring body and described self-expandable stent is flexibly connected, and the distal end of dictyosome is fixedly connected with described self-expandable stent; The described nearly heart side covering net connects rete cord.The invention has the beneficial effects as follows, provide one treat clinically arteries narrow time, not only can be implanted in arteries, and over time can also from tremulous pulse Ink vessel transfusing take out cover net holder device, reduce even eliminate the ill effect of existing self-expandable stent because causing in longer-term persistence body.
Description
Technical field
The present invention relates to technical field of medical instruments, specifically one covers net support, for treat clinically arteries narrow time, not only can be implanted in arteries, and can also take out from tremulous pulse Ink vessel transfusing over time.
Background technology
Self-expandable stent is that current known adaptation is large, the device of medium-sized artery blood vessel stenotic lesion treatment.The stent delivery catheter being mounted with self-expandable stent is delivered to stricture of artery place through peripheral arterial, then after being released in stent delivery catheter by self-expandable stent, this self-expandable stent self-expansion opens and is supported on arterial disease place.
The major function of self-expandable stent be to pre-expansion after arterial wall provide a supporting role, blood vessel is kept to be in expansion state, treatment of vascular is subsided obturation, and after the arterial wall pathological tissues reparation recovery from illness of support place by the time, self-expandable stent is without the necessity continuing to be placed in arteries.But existing self-expandable stent, once implanted Ink vessel transfusing, just by permanent retention body, cannot take out.Concerning human body, the self-expandable stent implanted is foreign body forever, stay Ink vessel transfusing for a long time and will inevitably cause further inevitably damage to blood vessel: one side self-expandable stent itself can rupture, distortion, self-expandable stent can stimulate the proliferation response of blood vessel wall on the other hand, causes vascular restenosis to be accelerated.
Usually, the way solving the vascular restenosis of Stent Implantation place places one piece of support again in former support of inserting, and the way of this support inner sleeve support will cause the further restenosis of arteries.Moreover, self-expandable stent needs long term systemic anticoagulant after implanting, and to prevent Thrombosis in sten, but long-term anticoagulant is potential massive hemorrhage risk again.At present, though degradable self-expandable stent enters clinical trial, mechanical support power is not enough, easily resilience after release, support force declines too early, rupture or defect that bulk comes off makes it be only limitted in less tremulous pulse (as the coronary artery) use of tube chamber in degradation process.Because when the diameter of degradable self-expandable stent is larger, its support force is more weak, therefore, prospect that is large, the treatment of medium-sized artery blood vessel stenotic lesion is applied to very remote.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide one treat clinically arteries narrow time not only can be implanted in arteries, and over time can also from tremulous pulse Ink vessel transfusing take out intravascular stent.
In order to achieve the above object, the invention provides one and cover net support, comprise self-expandable stent and cover net, the described net that covers comprises ring body and dictyosome, wherein the nearly heart side of ring body and described self-expandable stent is flexibly connected, and the distal end of dictyosome is fixedly connected with described self-expandable stent;
The described nearly heart side covering net connects rete cord.Cover net in the outer setting one of known self-expandable stent, form the main body of native system; The described distal end covering net forms multipoint mode with self-expandable stent and is fixedly connected with, number >=2 of this junction point, and its junction point can any position between the interlude of described self-expandable stent to distal end; The described net that covers forms multipoint mode with the nearly heart side of self-expandable stent and is flexibly connected, number >=2 of this junction point.Described rete cord for take out when this covers net support and taking-up instrument with the use of, rete cord and junction point >=2 covering net.During when self-expandable stent is in swelling state and is fixed on Endovascular, when rete cord is subject to the pulling force effect of taking-up instrument, cover net axially to carry out elongating, bouncing back in its radial direction in direction, cover guipure simultaneously and move self-expandable stent and axially carry out elongating, bouncing back in its radial direction in direction.Described self-expandable stent is by Nitinol but be not limited to Nitinol and make; Describedly cover net and rete cord by nonmetallic materials and be not limited to nonmetallic materials and make, there is hydrophilic superslide characteristic.
Preferably, described self-expandable stent is wave mode self-expandable stent, and this wave mode self-expandable stent comprises multiple wave mode support ring and crossover, and adjacent wave mode support ring is connected by crossover;
Described wave mode support ring is provided with spacing hole at its crest place, the axial adjacent wave peak dot place line of wave mode support ring and the axial centerline parallel of this wave mode self-expandable stent;
The described dictyosome covering net is made up of the twine that many are parallel to each other, one end of this twine is fixed on ring body, the other end of this twine is distal end, the distal end of described twine is fixedly connected with the axial centerline parallel of the spacing hole of this wave mode self-expandable stent heart side far away, described twine and described wave mode self-expandable stent;
Described ring body around and the spacing hole at this wave mode self-expandable stent proximal part place of the company of wearing.The described fixed connection point covering net and self-expandable stent can be the proximal part of crossover, also can be the distal end of crossover.
Preferably, the annexation of described twine and wave mode self-expandable stent is: described twine wears along the axial direction of this wave mode self-expandable stent the spacing hole connecting described wave mode self-expandable stent interlude;
The surface of described wave mode self-expandable stent is 4/5 ~ 1 of the surface area of this wave mode self-expandable stent by the area that dictyosome covers.
Preferably, described self-expandable stent is wave mode self-expandable stent, and this wave mode self-expandable stent comprises multiple wave mode support ring and crossover, and adjacent wave mode support ring is connected by crossover;
Described wave mode support ring is provided with spacing hole at its crest place, the axial adjacent wave peak dot place line of wave mode support ring and the axial centerline parallel of this wave mode self-expandable stent;
The described dictyosome covering net be made up of dictyosome grid cell, by the tubular-shaped structures of many knit-mesh, the diagonal angle of each dictyosome grid cell the online axial centerline parallel with described wave mode self-expandable stent, one end of described twine is fixed on ring body, the other end of this twine is distal end, and the distal end of described twine is fixedly connected with the spacing hole of this wave mode self-expandable stent heart side far away;
Described ring body around and the spacing hole at this wave mode self-expandable stent proximal part place of the company of wearing.
Preferably, the annexation of described twine and wave mode self-expandable stent is: the spacing hole on the wave mode bar connecting described wave mode self-expandable stent interlude worn by described twine;
The surface of described wave mode self-expandable stent is 4/5 ~ 1 of the surface area of this wave mode self-expandable stent by the area that dictyosome covers.The length of side of described dictyosome grid cell is between 0.01-10mm, and larger grid correspondence is equipped with larger-diameter support.
Preferably, described self-expandable stent is the Weaving type self-expandable stent be made up of support grid cell, the diagonal angle of each support grid cell the online axial centerline parallel with described Weaving type self-expandable stent;
The described dictyosome covering net is made up of the twine that many are parallel to each other, one end of this twine is fixed on ring body, the other end of this twine is distal end, the distal end of described twine is fixedly connected on the braiding cross point place of this Weaving type self-expandable stent heart side far away, the axial centerline parallel of described twine and this Weaving type self-expandable stent.
Preferably, described twine with the annexation of Weaving type self-expandable stent is: the braiding cross point of described Weaving type self-expandable stent is flexibly connected spacing ring, the distal end of described twine is fixedly connected on the spacing ring of this Weaving type self-expandable stent heart side far away, and described twine wears along the axial direction of this Weaving type self-expandable stent the spacing ring connecting described Weaving type self-expandable stent interlude;
Described ring body around and the spacing ring at this Weaving type self-expandable stent proximal part place of the company of wearing;
The surface of described Weaving type self-expandable stent is 1/5 ~ 1 of the surface area of Weaving type self-expandable stent by the area that dictyosome covers.
Preferably, described self-expandable stent is the Weaving type self-expandable stent be made up of support grid cell, the diagonal angle of each support grid cell the online axial centerline parallel with described Weaving type self-expandable stent;
The described dictyosome covering net be made up of dictyosome grid cell, by the tubular-shaped structures of many knit-mesh, the diagonal angle of each dictyosome grid cell the online axial centerline parallel with described Weaving type self-expandable stent, one end of described twine is fixed on ring body, the other end of this twine is distal end, and the distal end of described twine is fixedly connected with the braiding cross point place of this Weaving type self-expandable stent heart side far away.
Preferably, described twine with the annexation of Weaving type self-expandable stent is: the braiding cross point of described Weaving type self-expandable stent is flexibly connected spacing ring, the distal end of described twine is fixedly connected on the spacing ring of this Weaving type self-expandable stent heart side far away, and the spacing ring connecting this Weaving type self-expandable stent interlude worn by described twine;
Described ring body around and the spacing ring at this Weaving type self-expandable stent proximal part place of the company of wearing;
The surface of described Weaving type self-expandable stent is 1/5 ~ 1 of the surface area of Weaving type self-expandable stent by the area that dictyosome covers.
Preferably, described rete cord is connected to and covers on the ring body of net, and the lift point of this rete cord is positioned on the longitudinal center line of described self-expandable stent.The lift point of rete cord is positioned on self-expandable stent longitudinal center line, makes it have good symmetry, stability and safety when reclaiming.Described rete cord can support the proximal part that shape protrudes from self-expandable stent in fornix, or can be parallel with the end face of self-expandable stent proximal part, also can be recessed in self-expandable stent in anti-fornix.The radical of described rete cord can be 1, also can be 2 and more than, when radical >=2 piece of rete cord, the mid point of described rete cord interconnects.
Preferably, the lift point place of described rete cord and ring body is provided with developing mark point;
The lift point of described rete cord is provided with developing mark point.
Preferably, the scaffolding thread diameter of the diameter < self-expandable stent of the twine of described dictyosome.The diameter of described dictyosome twine is less than the scaffolding thread diameter of described self-expandable stent, therefore significantly can not increase the distance between this self-expandable stent and arterial wall, not affect the adherent effect of self-expandable stent.
Preferably, fused layer is provided with between described dictyosome and described self-expandable stent.Before dictyosome is stressed, dictyosome and self-expandable stent are integral structure by fused layer, and when dictyosome is stressed, fused layer ruptures.
Preferably, present invention also offers a kind of for take out cover as mentioned above net support cover net support take out instrument, comprise drag hook bar, interior sheath pipe and outer sheath, the head end of described drag hook bar is bending, and the diameter of this drag hook bar is successively decreased to head end gradually by tail end;
The head end of described outer sheath expands outwardly in horn-like.
Described drag hook bar and the rete cord covering net support as mentioned above with the use of.
Present invention also offers one and cover net stenter to implant and extraction system, comprise covering net support as above and covering net support and take out instrument, the described net support taking-up instrument that covers comprises drag hook bar, interior sheath pipe and outer sheath, the head end of described drag hook bar is bending, and the diameter of this drag hook bar is successively decreased to head end gradually by tail end; The head end of described outer sheath expands outwardly in horn-like.
Preferably, the described using method covering net support taking-up instrument comprises the following steps:
The convergent divergent channel that routine uses by step a. and guide wire send into outer sheath, after covering the vessel segment at net support proximal part place, withdraw from convergent divergent channel and guide wire by peripheral arterial puncture described in outer sheath being delivered to;
Sheath pipe in drag hook bar is sent into by step b., delivers to outer sheath head end place through outer sheath by interior sheath pipe and exposes the head end end of outer sheath, making interior sheath pipe arrive near described rete cord, sheath pipe in fixing;
Step c releases drag hook bar by interior sheath pipe, and the lift point making it hook rete cord, pushes interior sheath pipe towards the described distal end covering net support, until drag hook bar is retracted in interior sheath pipe.Rete cord and cover net and be elongated, attenuate in this process, the coating net cribbing that covers covered of netting also is out of shape with the pulling force covering net gradually.
Steps d. outer sheath is carried out pushing until interior sheath pipe is retracted in outer sheath towards the described distal end covering net support;
Step e. continues outer sheath to push towards the described distal end covering net support, cover net support described in making to be separated with arterial blood tube wall by the horn-like head end of outer sheath, until described in cover net support and be retracted in outer sheath gradually, outer sheath is withdrawn from by Ink vessel transfusing, completes the technical scheme of taking out support.The wherein said net that covers drives and covers net deformation of timbering under the pulling force effect of drag hook bar, and the caliber covering net support to be tapered distortion from proximal part to distal end.
Further, the described using method covering net support taking-up instrument is further comprising the steps of:
After having carried out step b, what be provided with that developing mark point determines that described drag hook bar stretches out interior sheath pipe according to the junction point place of described rete cord and ring body has stretched out region;
According to the junction point place of described rete cord and ring body be provided with developing mark point determine that described drag hook bar stretches out interior sheath pipe time, the overbending direction of drag hook rod head end.
Term " nearly heart side " refers to a part of region of described system by means of the closer aortic heart valve of blood flow path, and " heart side far away " refers to described system by means of blood flow path compared with a part of region away from aortic heart valve; And " proximal part " refers to the end face of described system by means of the closer aortic heart valve of blood flow path, " distal end " refers to described system by means of blood flow path compared with an end face away from aortic heart valve.
The invention has the beneficial effects as follows, provide one treat clinically arteries narrow time, not only can be implanted in arteries, and over time can also from tremulous pulse Ink vessel transfusing take out cover net holder device, reduce even eliminate the ill effect of existing self-expandable stent because causing in longer-term persistence body.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention takes out state;
Fig. 2 is a kind of structural representation of the present invention in Fig. 1;
Fig. 3 is the structural representation of self-expandable stent in Fig. 1;
Fig. 4 is the structural representation of wave mode bar in Fig. 3;
Fig. 5 is the structural representation covering net in Fig. 1;
Fig. 6 is another structural representation of the present invention;
Fig. 7 is the structural representation of self-expandable stent in Fig. 6;
Fig. 8 is the structural representation of wave mode bar in Fig. 7;
Fig. 9 is the structural representation covering net in Fig. 6;
Figure 10 is another structural representation of the present invention;
Figure 11 is the enlarged diagram of part A in Figure 10;
Figure 12 is the structural representation of self-expandable stent in Figure 10;
Figure 13 is the structural representation covering net in Figure 10;
Figure 14 is a structural representation more of the present invention;
Figure 15 is the enlarged diagram of part B in Figure 14;
Figure 16 is the structural representation of self-expandable stent in Figure 14;
Figure 17 is the structural representation covering net in Figure 14;
Figure 18 is the structural representation for taking out taking-up instrument of the present invention.
Wherein:
1-wave mode self-expandable stent 11-wave mode bar 101-spacing hole
12-crossover 2-Weaving type self-expandable stent 201-spacing ring
3-covers net 31-ring body 32-dictyosome
321-twine 4-rete cord 5-drag hook bar
Sheath pipe 7-outer sheath in 6-
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1:
One as shown in Fig. 1 ~ Fig. 5 covers net support, and comprise self-expandable stent and cover net 3, the described net 3 that covers comprises ring body 31 and dictyosome 32, described in cover net 3 nearly heart side connect rete cord 4.Cover net 3 in the outer setting one of known self-expandable stent, form the main body of native system; The described distal end covering net 3 forms multipoint mode with self-expandable stent and is fixedly connected with, and its junction point can any position between the interlude of described self-expandable stent to distal end; The described net 3 that covers forms multipoint mode with the nearly heart side of self-expandable stent and is flexibly connected.Described rete cord 4 for take out when this covers net support and taking-up instrument with the use of.During when self-expandable stent is in swelling state and is fixed on Endovascular, when rete cord 4 is subject to the pulling force effect of taking-up instrument, cover net 3 axially to carry out elongating, bouncing back in its radial direction in direction, cover net 3 simultaneously and drive self-expandable stent axially to carry out elongating, bouncing back in its radial direction in direction.Described self-expandable stent is by Nitinol but be not limited to Nitinol and make; Describedly cover net 3 and rete cord 4 by nonmetallic materials and be not limited to nonmetallic materials and make, there is hydrophilic superslide characteristic.
Described self-expandable stent is wave mode self-expandable stent 1, and this wave mode self-expandable stent 1 comprises multiple wave mode support ring and crossover 12, and adjacent wave mode support ring is connected by crossover 12;
Described wave mode support ring is the wave mode circulus be made up of multiple wave mode bar 11, and this wave mode bar 11 is provided with spacing hole 101 at its crest place, the axial adjacent wave peak dot place line of wave mode support ring and the axial centerline parallel of this wave mode self-expandable stent 1;
The described dictyosome 32 covering net 3 is made up of the many twines be parallel to each other 321, one end of this twine 321 is fixed on ring body 31, the other end of this twine 321 is distal end, the distal end of described twine 321 is fixedly connected with the spacing hole 101 on heart side wave type bar 11 far away, the axial centerline parallel of described twine 321 and described wave mode self-expandable stent 1;
Described ring body 31 around and spacing hole 101 on the wave mode bar 11 at proximal part place of the company of wearing.The described fixed connection point covering net 3 and self-expandable stent can be the proximal part of crossover 12;
Described twine 321 with the annexation of wave mode self-expandable stent 1 is: the spacing hole 101 on the wave mode bar 11 connecting described wave mode self-expandable stent 1 interlude worn by described twine 321 along the axial direction of this wave mode self-expandable stent 1;
The surface of described wave mode self-expandable stent 1 is 4/5 of the surface area of this wave mode self-expandable stent 1 by the area that dictyosome 32 covers.The length of side of described dictyosome grid cell is between 0.01-10mm, and larger grid correspondence is equipped with larger-diameter support.
Described rete cord 4 is connected to and covers on the ring body 31 of net 3, and the lift point of this rete cord 4 is positioned on the longitudinal center line of described self-expandable stent.
Described rete cord 4 is provided with developing mark point with the junction point place of ring body 31;
The lift point of described rete cord 4 is provided with developing mark point.The lift point of rete cord 4 is positioned on self-expandable stent longitudinal center line, makes it have good symmetry, stability and safety when reclaiming.Described rete cord 4 supports the proximal part that shape protrudes from self-expandable stent in fornix, the radical of rete cord 4 is 2, and the mid point of described every root rete cord 4 interconnects.
The scaffolding thread diameter of the diameter < self-expandable stent of the twine 321 of described dictyosome 32.The diameter of the twine 321 of described dictyosome 32 is less than the scaffolding thread diameter of described self-expandable stent, therefore significantly can not increase the distance between this self-expandable stent and arterial wall, not affect the adherent effect of self-expandable stent.
Embodiment 2:
One covers net support, and all the other are with embodiment 1, is provided with fused layer between described dictyosome 32 and described self-expandable stent.Before dictyosome is stressed, dictyosome and self-expandable stent are integral structure by fused layer, and when dictyosome is stressed, fused layer ruptures.
Embodiment 3:
One as shown in figs. 6-9 covers net support, and comprise self-expandable stent and cover net 3, the described net 3 that covers comprises ring body 31 and dictyosome 32, described in cover net 3 nearly heart side connect rete cord 4.
Described self-expandable stent is wave mode self-expandable stent 1, and this wave mode self-expandable stent 1 comprises multiple wave mode support ring and crossover 12, and adjacent wave mode support ring is connected by crossover 12;
Described wave mode support ring is provided with spacing hole 101 at its crest place, the axial adjacent wave peak dot place line of wave mode support ring and the axial centerline parallel of this wave mode self-expandable stent 1;
The described dictyosome 32 covering net 3 is tubular-shaped structures that be made up of dictyosome grid cell, that woven by many twines 321, the diagonal angle of each dictyosome grid cell the online axial centerline parallel with described wave mode self-expandable stent 1, one end of described twine 321 is fixed on ring body 31, the other end of this twine 321 is distal end, and the distal end of described twine 321 is fixedly connected with the spacing hole 101 of this wave mode self-expandable stent 1 heart side far away;
Described ring body 31 around and the spacing hole 101 at this wave mode self-expandable stent 1 proximal part place of the company of wearing.
Described twine 321 with the annexation of wave mode self-expandable stent 1 is: the spacing hole 101 on the wave mode bar 11 of described twine 321 company of wearing described wave mode self-expandable stent 1 interlude;
The surface of described wave mode self-expandable stent 1 is 4/5 of the surface area of this wave mode self-expandable stent 1 by the area that dictyosome 32 covers.
Described rete cord 4 is connected to and covers on the ring body 31 of net 3, and the lift point of this rete cord 4 is positioned on the longitudinal center line of described self-expandable stent.
Described rete cord 4 is provided with developing mark point with the junction point place of ring body 31;
The lift point of described rete cord 4 is provided with developing mark point.
The scaffolding thread diameter of the diameter < self-expandable stent of the twine 321 of described dictyosome 32.
Embodiment 4:
One as shown in Figure 10 ~ Figure 13 covers net support, and comprise self-expandable stent and cover net 3, the described net 3 that covers comprises ring body 31 and dictyosome 32, described in cover net 3 nearly heart side connect rete cord 4.
Described self-expandable stent is the Weaving type self-expandable stent 2 be made up of support grid cell, the diagonal angle of each support grid cell the online axial centerline parallel with described Weaving type self-expandable stent 2;
The described dictyosome 32 covering net 3 is made up of the many twines be parallel to each other 321, one end of this twine 321 is fixed on ring body 31, the other end of this twine 321 is distal end, the distal end of described twine 321 is fixedly connected on the braiding cross point place of this Weaving type self-expandable stent 2 heart side far away, the axial centerline parallel of described twine 321 and this Weaving type self-expandable stent 2.
Described twine 321 with the annexation of Weaving type self-expandable stent 2 is: the braiding cross point of described Weaving type self-expandable stent 2 is flexibly connected spacing ring 201, the distal end of described twine 321 is fixedly connected on the spacing ring 201 of this Weaving type self-expandable stent 2 heart side far away, and described twine 321 wears along the axial direction of this Weaving type self-expandable stent 2 spacing ring 201 connecting described Weaving type self-expandable stent 2 interlude;
Described ring body 31 around and the spacing ring 201 at this Weaving type self-expandable stent 2 proximal part place of the company of wearing;
The surface of described Weaving type self-expandable stent 2 is 1/5 of the surface area of Weaving type self-expandable stent 2 by the area that dictyosome 32 covers.
Described rete cord 4 is connected to and covers on the ring body 31 of net 3, and the lift point of this rete cord 4 is positioned on the longitudinal center line of described self-expandable stent.
Described rete cord 4 is provided with developing mark point with the junction point place of ring body 31;
The lift point of described rete cord 4 is provided with developing mark point.
The scaffolding thread diameter of the diameter < self-expandable stent of the twine 321 of described dictyosome 32.
Embodiment 5:
One as shown in Figure 14 ~ Figure 17 covers net support, and comprise self-expandable stent and cover net 3, the described net 3 that covers comprises ring body 31 and dictyosome 32, described in cover net 3 nearly heart side connect rete cord 4.
Described self-expandable stent is the Weaving type self-expandable stent 2 be made up of support grid cell, the diagonal angle of each support grid cell the online axial centerline parallel with described Weaving type self-expandable stent 2;
The described dictyosome 32 covering net 3 is tubular-shaped structures that be made up of dictyosome grid cell, that woven by many twines 321, the diagonal angle of each dictyosome grid cell the online axial centerline parallel with described Weaving type self-expandable stent 2, one end of described twine 321 is fixed on ring body 31, the other end of this twine 321 is distal end, and the distal end of described twine 321 is fixedly connected with the braiding cross point place of this Weaving type self-expandable stent 2 heart side far away.
Described twine 321 with the annexation of Weaving type self-expandable stent 2 is: the braiding cross point of described Weaving type self-expandable stent 2 is flexibly connected spacing ring 201, the distal end of described twine 321 is fixedly connected on the spacing ring 21 of this Weaving type self-expandable stent 2 heart side far away, the spacing ring 201 of this Weaving type self-expandable stent 2 interlude of described twine 321 company of wearing;
Described ring body 31 around and the spacing ring 201 at this Weaving type self-expandable stent 2 proximal part place of the company of wearing;
The surface of described Weaving type self-expandable stent 2 is 1/5 of the surface area of Weaving type self-expandable stent 2 by the area that dictyosome 32 covers.
Described rete cord 4 is connected to and covers on the ring body 31 of net 3, and the lift point of this rete cord 4 is positioned on the longitudinal center line of described self-expandable stent.
Described rete cord 4 is provided with developing mark point with the junction point place of ring body 31;
The lift point of described rete cord 4 is provided with developing mark point.
The scaffolding thread diameter of the diameter < self-expandable stent of the twine 321 of described dictyosome 32.
Embodiment 6:
As shown in figure 18 a kind of for take out cover net support cover net support take out instrument, comprise drag hook bar 5, interior sheath pipe 6 and outer sheath 7, the head end of described drag hook bar 5 is bending, and the diameter of this drag hook bar 5 is successively decreased to head end gradually by tail end;
The head end of described outer sheath 7 expands outwardly in horn-like.
The described using method covering net support taking-up instrument comprises the following steps:
The convergent divergent channel that routine uses by step a. and guide wire send into outer sheath 7, after covering the vessel segment at net support proximal part place, withdraw from convergent divergent channel and guide wire by peripheral arterial puncture described in outer sheath 7 being delivered to;
Drag hook bar 5 is sent into interior sheath pipe 6 by step b., through outer sheath 7 interior sheath pipe 6 is delivered to outer sheath 7 head end place and exposes the head end end of outer sheath 7, making interior sheath pipe 6 arrive near described rete cord 4, sheath pipe 6 in fixing;
Step c releases drag hook bar 5 by interior sheath pipe 6, and the lift point making it hook rete cord 4, pushes interior sheath pipe 6 towards the described distal end covering net support, until drag hook bar 5 is retracted in interior sheath pipe 6.Rete cord 4 and cover net 3 and be elongated, attenuate in this process, the net cribbing that covers that coating net 3 covers also is out of shape with the pulling force covering net 3 gradually.
Steps d. outer sheath 7 is carried out pushing until interior sheath pipe 6 is retracted in outer sheath 7 towards the described distal end covering net support;
Step e. continues outer sheath 7 to push towards the described distal end covering net support, cover net support described in making to be separated with arterial blood tube wall by the horn-like head end of outer sheath 7, until described in cover net and be retracted in outer sheath 7 gradually, outer sheath 7 is withdrawn from by Ink vessel transfusing, completes the technical scheme of taking out support.The wherein said net 3 that covers drives and covers net deformation of timbering under the pulling force effect of drag hook bar 5, and the caliber covering net support to be tapered distortion from proximal part to distal end.
Further, the described using method covering net support taking-up instrument is further comprising the steps of:
After having carried out step b, what be provided with that developing mark point determines that described drag hook bar 5 stretches out interior sheath pipe 6 according to described rete cord 4 and the junction point place of ring body 31 has stretched out region;
According to described rete cord 4 and the junction point place of ring body 31 be provided with developing mark point determine that described drag hook bar 5 stretches out interior sheath pipe 6 time, the overbending direction of drag hook bar 5 head end.
Below the preferred embodiment of the invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art can also make all equivalent modification or replacement under the prerequisite without prejudice to the invention spirit, and these equivalent modifications or replacement are all included in the application's claim limited range.
Claims (15)
1. one kind covers net support, comprise self-expandable stent and cover net (3), it is characterized in that: the described net (3) that covers comprises ring body (31) and dictyosome (32), wherein the nearly heart side of ring body (31) and described self-expandable stent is flexibly connected, and the distal end of dictyosome (32) is fixedly connected with described self-expandable stent;
The described nearly heart side covering net (3) connects rete cord (4).
2. according to claim 1ly cover net support, it is characterized in that: described self-expandable stent is wave mode self-expandable stent (1), this wave mode self-expandable stent (1) comprises multiple wave mode support ring and crossover (12), and adjacent wave mode support ring is connected by crossover (12);
Described wave mode support ring is provided with spacing hole (101) at its crest place, the axial adjacent wave peak dot place line of wave mode support ring and the axial centerline parallel of this wave mode self-expandable stent (1);
The described dictyosome (32) covering net (3) is made up of the many twines be parallel to each other (321), one end of this twine (321) is fixed on ring body (31), the other end of this twine (321) is distal end, the distal end of described twine (321) is fixedly connected with the spacing hole (101) of this wave mode self-expandable stent (1) heart side far away, the axial centerline parallel of described twine (321) and described wave mode self-expandable stent (1);
Described ring body (31) around and the spacing hole (101) at this wave mode self-expandable stent (1) proximal part place of the company of wearing.
3. according to claim 2ly cover net support, it is characterized in that, described twine (321) with the annexation of wave mode self-expandable stent (1) is: described twine (321) wears along the axial direction of this wave mode self-expandable stent (1) spacing hole (101) connecting described wave mode self-expandable stent (1) interlude;
The surface of described wave mode self-expandable stent (1) is 4/5 ~ 1 of the surface area of this wave mode self-expandable stent (1) by the area that dictyosome (32) covers.
4. according to claim 1ly cover net support, it is characterized in that: described self-expandable stent is wave mode self-expandable stent (1), this wave mode self-expandable stent (1) comprises multiple wave mode support ring and crossover (12), and adjacent wave mode support ring is connected by crossover (12);
Described wave mode support ring is provided with spacing hole (101) at its crest place, the axial adjacent wave peak dot place line of wave mode support ring and the axial centerline parallel of this wave mode self-expandable stent (1);
The described dictyosome (32) covering net (3) is tubular-shaped structures that be made up of dictyosome grid cell, that woven by many twines (321), the diagonal angle of each dictyosome grid cell the online axial centerline parallel with described wave mode self-expandable stent (1), one end of described twine (321) is fixed on ring body (31), the other end of this twine (321) is distal end, and the distal end of described twine (321) is fixedly connected with the spacing hole (101) of this wave mode self-expandable stent (1) heart side far away;
Described ring body (31) around and the spacing hole (101) at this wave mode self-expandable stent (1) proximal part place of the company of wearing.
5. according to claim 4ly cover net support, it is characterized in that, described twine (321) with the annexation of wave mode self-expandable stent (1) is: the spacing hole (101) on the wave mode bar (11) of described twine (321) company of wearing described wave mode self-expandable stent (1) interlude;
The surface of described wave mode self-expandable stent (1) is 4/5 ~ 1 of the surface area of this wave mode self-expandable stent (1) by the area that dictyosome (32) covers.
6. according to claim 1ly cover net support, it is characterized in that: described self-expandable stent is the Weaving type self-expandable stent (2) be made up of support grid cell, the diagonal angle of each support grid cell the online axial centerline parallel with described Weaving type self-expandable stent (2);
The described dictyosome (32) covering net (3) is made up of the many twines be parallel to each other (321), one end of this twine (321) is fixed on ring body (31), the other end of this twine (321) is distal end, the distal end of described twine (321) is fixedly connected on the braiding cross point place of this Weaving type self-expandable stent (2) heart side far away, the axial centerline parallel of described twine (321) and this Weaving type self-expandable stent (2).
7. according to claim 6ly cover net support, it is characterized in that, described twine (321) with the annexation of Weaving type self-expandable stent (2) is: the braiding cross point of described Weaving type self-expandable stent (2) is flexibly connected spacing ring (201), the distal end of described twine (321) is fixedly connected on the spacing ring (201) of this Weaving type self-expandable stent (2) heart side far away, described twine (321) wears along the axial direction of this Weaving type self-expandable stent (2) spacing ring (201) connecting described Weaving type self-expandable stent (2) interlude,
Described ring body (31) around and the spacing ring (201) at this Weaving type self-expandable stent (2) proximal part place of the company of wearing;
The surface of described Weaving type self-expandable stent (2) is 1/5 ~ 1 of the surface area of Weaving type self-expandable stent (2) by the area that dictyosome (32) covers.
8. according to claim 1ly cover net support, it is characterized in that: described self-expandable stent is the Weaving type self-expandable stent (2) be made up of support grid cell, the diagonal angle of each support grid cell the online axial centerline parallel with described Weaving type self-expandable stent (2);
The described dictyosome (32) covering net (3) is tubular-shaped structures that be made up of dictyosome grid cell, that woven by many twines (321), the diagonal angle of each dictyosome grid cell the online axial centerline parallel with described Weaving type self-expandable stent (2), one end of described twine (321) is fixed on ring body (31), the other end of this twine (321) is distal end, and the distal end of described twine (321) is fixedly connected with the braiding cross point place of this Weaving type self-expandable stent (2) heart side far away.
9. according to claim 8ly cover net support, it is characterized in that, described twine (321) with the annexation of Weaving type self-expandable stent (2) is: the braiding cross point of described Weaving type self-expandable stent (2) is flexibly connected spacing ring (201), the distal end of described twine (321) is fixedly connected on the spacing ring (21) of this Weaving type self-expandable stent (2) heart side far away, the spacing ring (201) of this Weaving type self-expandable stent (2) interlude of described twine (321) company of wearing;
Described ring body (31) around and the spacing ring (201) at this Weaving type self-expandable stent (2) proximal part place of the company of wearing;
The surface of described Weaving type self-expandable stent (2) is 1/5 ~ 1 of the surface area of Weaving type self-expandable stent (2) by the area that dictyosome (32) covers.
10. according to claim 1ly cover net support, it is characterized in that: described rete cord (4) be connected to cover net (3) ring body (31) on, the lift point of this rete cord (4) is positioned on the longitudinal center line of described self-expandable stent.
11. according to claim 10ly cover net support, it is characterized in that: described rete cord (4) is provided with developing mark point with the junction point place of ring body (31);
The lift point of described rete cord (4) is provided with developing mark point.
12. according to claim 1ly cover net support, it is characterized in that: the scaffolding thread diameter of the diameter < self-expandable stent of the twine (321) of described dictyosome (32).
13. according to claim 1ly cover net support, it is characterized in that: be provided with fused layer between described dictyosome (32) and described self-expandable stent.
The net support that covers covering net support as described in 14. 1 kinds of taking-ups are as arbitrary in claim 1 to 13 takes out instrument, comprise drag hook bar (5), interior sheath pipe (6) and outer sheath (7), it is characterized in that: the head end of described drag hook bar (5) is bending, and the diameter of this drag hook bar (5) is successively decreased to head end gradually by tail end;
The head end of described outer sheath (7) expands outwardly in horn-like.
15. 1 kinds cover net stenter to implant and extraction system, comprise as arbitrary in claim 1 to 13 as described in cover net support and cover net support take out instrument, the described net support taking-up instrument that covers comprises drag hook bar (5), interior sheath pipe (6) and outer sheath (7), it is characterized in that: the head end of described drag hook bar (5) is bending, and the diameter of this drag hook bar (5) is successively decreased to head end gradually by tail end; The head end of described outer sheath (7) expands outwardly in horn-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510512007.6A CN105213077B (en) | 2015-08-19 | 2015-08-19 | One kind covers net support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510512007.6A CN105213077B (en) | 2015-08-19 | 2015-08-19 | One kind covers net support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105213077A true CN105213077A (en) | 2016-01-06 |
| CN105213077B CN105213077B (en) | 2018-02-02 |
Family
ID=54982606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510512007.6A Expired - Fee Related CN105213077B (en) | 2015-08-19 | 2015-08-19 | One kind covers net support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105213077B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5769884A (en) * | 1996-06-27 | 1998-06-23 | Cordis Corporation | Controlled porosity endovascular implant |
| CN2706140Y (en) * | 2003-12-26 | 2005-06-29 | 吴雄 | Nickel titanium memory alloy net knitted holder and knitted holder recovery device |
| CN200942134Y (en) * | 2006-08-14 | 2007-09-05 | 浙江大学 | Improved esophagus supporting frame |
| US20100131002A1 (en) * | 2008-11-24 | 2010-05-27 | Connor Robert A | Stent with a net layer to embolize and aneurysm |
| CN101933855A (en) * | 2010-08-26 | 2011-01-05 | 先健科技(深圳)有限公司 | Recyclable vascular stent and recycling method thereof |
| CN102488579A (en) * | 2011-12-14 | 2012-06-13 | 南京微创医学科技有限公司 | Mixed structural recyclable endoluminal stent |
| CN102973343A (en) * | 2006-11-22 | 2013-03-20 | 印斯拜尔Md有限公司 | Optimized stent jacket |
| CN103313681A (en) * | 2011-01-14 | 2013-09-18 | W.L.戈尔及同仁股份有限公司 | Stent |
| CN104510544A (en) * | 2014-11-17 | 2015-04-15 | 贾忠 | Automatic-expansion patch and using method thereof |
-
2015
- 2015-08-19 CN CN201510512007.6A patent/CN105213077B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5769884A (en) * | 1996-06-27 | 1998-06-23 | Cordis Corporation | Controlled porosity endovascular implant |
| CN2706140Y (en) * | 2003-12-26 | 2005-06-29 | 吴雄 | Nickel titanium memory alloy net knitted holder and knitted holder recovery device |
| CN200942134Y (en) * | 2006-08-14 | 2007-09-05 | 浙江大学 | Improved esophagus supporting frame |
| CN102973343A (en) * | 2006-11-22 | 2013-03-20 | 印斯拜尔Md有限公司 | Optimized stent jacket |
| US20100131002A1 (en) * | 2008-11-24 | 2010-05-27 | Connor Robert A | Stent with a net layer to embolize and aneurysm |
| CN101933855A (en) * | 2010-08-26 | 2011-01-05 | 先健科技(深圳)有限公司 | Recyclable vascular stent and recycling method thereof |
| CN103313681A (en) * | 2011-01-14 | 2013-09-18 | W.L.戈尔及同仁股份有限公司 | Stent |
| CN102488579A (en) * | 2011-12-14 | 2012-06-13 | 南京微创医学科技有限公司 | Mixed structural recyclable endoluminal stent |
| CN104510544A (en) * | 2014-11-17 | 2015-04-15 | 贾忠 | Automatic-expansion patch and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105213077B (en) | 2018-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204683687U (en) | A kind of intracranial aneurysm neck reconstructing device | |
| US9370437B2 (en) | Stent having less invasive ends | |
| US20040106974A1 (en) | Thoracic introducer | |
| CN204033540U (en) | Segment combined type support type artifical vascular | |
| BRPI0807261B1 (en) | STENT LOADED CATHETER SETS | |
| WO2007016821A1 (en) | A surgical stent peosthesis and a transporter for transporting the peostheses | |
| CN106137484A (en) | A kind of self-expansion type conical blood vessel support | |
| CN211325322U (en) | Interlayer crevasse plugging system | |
| US20200352712A1 (en) | Cardiac valve prosthesis and delivery device thereof | |
| CN111035486A (en) | Stent delivery system and method of loading stents | |
| CN104055601B (en) | A kind of novel implantation instrument release device | |
| CN113017746A (en) | Interlayer crevasse plugging system | |
| CN107811728A (en) | Vascular endoprostheses | |
| CN113081389A (en) | Ascending aorta covered stent and conveying system assembly and using method thereof | |
| CN204995616U (en) | That can take out covers net support | |
| WO2017176678A1 (en) | Delivery device with filler tubes | |
| CN203988521U (en) | A kind of asymmetric conical intravascular stent | |
| CN107802320B (en) | Mesh bladder system | |
| CN104771200A (en) | Intracranial aneurysm neck reconstruction device | |
| CN108095857A (en) | A kind of biodegradable stent system for crotch vascular lesion | |
| CN107019581B (en) | Ascending aorta and aortic valve integrated intravascular stent | |
| CN105213077A (en) | One covers net support | |
| CN207627445U (en) | A kind of coronary artery protective device | |
| CN212415990U (en) | Support and heart valve prosthesis | |
| CN210784867U (en) | Head end self-expanding telescopic extension catheter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 Termination date: 20200819 |