CN105232136A - Intramedullary fixing device capable of effectively promoting fracture healing - Google Patents
Intramedullary fixing device capable of effectively promoting fracture healing Download PDFInfo
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- CN105232136A CN105232136A CN201510773308.4A CN201510773308A CN105232136A CN 105232136 A CN105232136 A CN 105232136A CN 201510773308 A CN201510773308 A CN 201510773308A CN 105232136 A CN105232136 A CN 105232136A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The invention discloses an intramedullary fixing device capable of effectively promoting fracture healing, and belongs to the technical field of orthopaedic medical instruments. The intramedullary fixing device is used for fixing a fracture portion and promoting healing. According to the technical scheme, the intramedullary fixing device is in the shape of a cylinder or an oval cylinder, the cylinder is formed by connecting multiple short cylinder bodies and stand columns, and pull rods are arranged between every two adjacent short cylinder bodies. By means of the structure, the overall elasticity modulus of the cylinder is better, the internal fixing strength is enhanced, and the conditions of breaking, stress fracturing and the like can be prevented from occurring; meanwhile, bone trabeculae can be allowed to grow into gaps between the stand columns and the pull rods which are arranged among the short cylinder bodies in a connected mode, the purpose of simultaneous growing of intramedullary and extramedullary calluses is achieved, the facture healing time is shortened, and various complications of the facture and an operation are reduced. The intramedullary fixing device is innovation of a facture reduction and fixation technique, the long-standing, big and difficult problems that after the osteoportic fracture of old people is treated, cancellous substance healing is worse, the bone healing intensity is influenced, and sometime delayed fracture healing and refracture can be caused are solved, and the significant economic and social benefits are achieved.
Description
Technical field
The present invention relates to and a kind of fracture to be fixed and the Medullary fixation device of Promotive union, belong to orthopedic medical device technical field.
Background technology
Long bone fracture is clinical common fracture, existing many employing open reduction Plate internal fixiation and intramedullary pin internal fixtion.Traditional Plate internal fixiation long incision, wound are large, need incised tissue to appear fracture area in treatment, then carry out reduction fixation, this method is large to fracture soft tissue injury around, intraoperative hemorrhage is many, Accessory injury is many, also need secondary to take out, patient's postoperative recovery time is long.Intramedullary pin internal fixtion needs to carry out expansion marrow, the corresponding corresponding complication bringing expansion marrow, such as fat embolism match, pulmonary infarction etc.More general impact is, fracture inside-fixture insert after due to the volume occupation time process of inner matter, destroy broken ends of fractured bone bone trabecula, affect the bone trabecular growth of two broken ends of fractured bone and successional recovery.In skeleton, bone trabecula has important function, and it connects surrounding bone cortex, enhances skeletal bulk strength; In addition, it forms important mechanotransduction and transformation function in pulp cavity, can make stressed more balanced, reasonable when cortical bone bears various load, and local excessive loads is conducted, is dispersed to other positions.For near end of thighbone, there is the collodiaphyseal angle of about 110 ° ~ 140 ° between neck of femur and femoral shaft, between neck of femur axis and femur two condyle, line forms anteversion of femoral neck, and therefore neck of femur bears pressure, tension force and shearing.Have the shelf structure that spreads out of compression trabeculae and tension force bone trabecula System's composition in neck of femur, transform its moment of flexure of bearing and moment of torsion and conduct to backbone, dispersion local stress, reduces risk of bone fracture; If near end of thighbone does not exist such shelf structure that spreads out, when femoral shaft neck of femur under violence effect can bear larger moment of flexure and moment of torsion, the risk that fracture occurs is higher.Bone trabecula can have blood fortune system in efficient recovery marrow after rebuilding, contribute to the healing of spongy bone and cortical bone.Have no progeny as do not recovered in trabecular bone structure, inside and outside fracture healing process the marrow being invaded by pathogen, growth of spur is unbalanced, especially senile osteoporosis fracture, after possible cortical bone healing, spongy bone healing is poor, affect bone healing intensity and the conduction to normal duty, sometimes can cause fracture delayed union, disunion or refracture.And the proximal-distal of long bone Medullary fixation system is thicker, trabecular bone structure is destroyed more serious, inserts occupation time process more obviously, affects bone trabecula and grow into, and is unfavorable for that later stage bony structures is recovered.
In fractures, also will consider how to carry out resetting and fixing according to skeletal structure, this will directly have influence on the recovery degree of fracture site, become the key of operation success or failure.Skeleton makes every effort to reach a kind of optimum structure in growth course, and namely the form of skeleton and material are by the regulation and control of personal activity level, make it enough to bear mechanical load, but do not increase the burden of metabolism transhipment.According to above-mentioned principle, fracture moulds the Changing Pattern display of process again, and if any displacement after fracture, will have obvious callus formation in recessed side, the direction of transfer along compressive stress arranges by its interior bone girder, and will have the absorption of bone in convex side.
At present, fracture of femoral neck, intertrochanteric fracture, Methods for Distal Femoral Fractures, Proximal tibia fracture are clinical common injury, need to carry out to comprise Gama nail (Gamma), hollow (pulling force) screw etc. in the treatment fixing, its major complications comprise nonunion, delayed union, inside-fixture loosen, fracture.
Along with the development of orthopaedics Internal fixation technology, be necessary very much to design new fixture, make fractures under the guidance of biology and biomechanical principle, make the cortex of fracture and main bone trabecula grow reconstruction simultaneously, realize fracture inside and outside marrow and heal simultaneously.Such can accelerating bone healing speed, improve healing of fracture and intensity, reduce nonunion, the incidence rate of the complication such as delayed union, inside-fixture loosen, fracture, to improve therapeutic effect, alleviate the misery of patient.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Medullary fixation device that can promote union of fracture, it is theoretical that this Medullary fixation device make use of bionical internal fixtion, make fracture recover to follow conduction and the load character of fracture self, fractures can be made to reach satisfied reset and healing effect.
The technical scheme solved the problems of the technologies described above is:
A kind of Medullary fixation device that can promote union of fracture, it is a cylinder or elliptical cylinder, cylinder or elliptical cylinder are upright or conformal with skeleton local curvature oblique cylindrical shell, cylindrical shell is connected to form by multiple short cylinder and column, multiple short cylinder is along central axis order arrangement up and down, column is had to be connected between adjacent short cylinder, the top and bottom of column are connected with short cylinder circumferential wall upper surface, below with short cylinder circumferential wall lower surface, top respectively, the centerline axis parallel of column and cylinder or elliptical cylinder, multiple column is along the distribution of cylinder or elliptical cylinder.
The above-mentioned Medullary fixation device that can promote union of fracture, pull bar is also had to connect between described adjacent column, pull bar is monocline pull bar or the brace that intersects, and the two ends of pull bar are connected with short cylinder circumferential wall upper surface, below with short cylinder circumferential wall lower surface, top respectively.
The above-mentioned Medullary fixation device that can promote union of fracture, described short cylinder is 2-10, and the column between adjacent short cylinder is 2-50 root.
The above-mentioned Medullary fixation device that can promote union of fracture, the circumferential inner wall of described short cylinder bottom has screw thread, and the nose threads of the handle of screw thread and withdrawing device matches.
The invention has the beneficial effects as follows:
The present invention is cylinder or elliptical cylinder, cylindrical shell is connected to form by multiple short cylinder and column, pull bar is also had between adjacent short cylinder, such a structure increases the strength and stability of cylindrical shell, cylindrical shell integral, flexible modulus can be made better, internal fixtion intensity is enhanced, and can prevent fracture, stress fractures etc. situation; Meanwhile, this structure can allow bone trabecula to be connected along the column between short cylinder with the space of pull bar to grow into, reach external callus in marrow and grow simultaneously, shorten healing time, recover physiological mechanics characteristic, reduce the various complication of fracture and operation; The screw thread design of end can facilitate operating theatre staff to complete to insert and take out after union of fracture.
Present invention utilizes bionical internal fixtion theoretical, adopt the Novel bionic Medullary fixation device more meeting instrument of skeleton anatomical structure and biomethanics structure characteristic, make fracture recover to follow conduction and the load character of fracture self, fractures can be made to reach satisfied reset and healing effect.
The present invention is the innovation of reduction of the fracture technique for fixing, and solve especially after senile osteoporosis fractures, spongy bone healing is poor, affects bone healing intensity, sometimes may cause the hard nut to crack of fracture delayed union and refracture.
Micropore of the present invention bionical fracture Medullary fixation device is applicable to whole body long bone fracture internal fixation treatment, be particularly useful for the complicated trabecular bone structure fracture of juxtra-articular, in conjunction with the support of less invasive techniques and image navigation technology, there is good expection, significant economic and social benefit can be obtained.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
In figure, labelling is as follows: short cylinder 1, column 2, pull bar 3, screw thread 4.
Detailed description of the invention
The present invention is a cylinder or elliptical cylinder, cylinder or elliptical cylinder are isometrical cylindrical shell, the diameter of cylindrical shell is identical with the intramedullary pin used in general operation with length, and can also be waney cylindrical shell, cylindrical shell be upright or conformal with skeleton local curvature oblique cylindrical shell.
Show in figure, cylindrical shell of the present invention is connected to form by multiple short cylinder 1 and column 2.The diameter of multiple short cylinder 1 is identical, and multiple short cylinder 1 is along central axis order arrangement up and down, and the quantity of short cylinder 1 is 2-10, and the Medullary fixation device of composition different length, can select the Medullary fixation device of appropriate length according to actual needs during use.
Show in figure, column 2 is had to be connected between adjacent short cylinder 1, the top and bottom of column 2 are connected with below short cylinder 1 circumferential wall upper surface with top short cylinder 1 circumferential wall lower surface respectively, the centerline axis parallel of column 2 and cylinder or elliptical cylinder, multiple column 2 is uniform along cylinder or elliptical cylinder.Column 2 between adjacent short cylinder 1 is 2-50 root.
Show in figure, also have pull bar 3 to connect between adjacent column 2, pull bar 3 is monocline pull bar or the brace that intersects, and the two ends of pull bar 3 are connected with below short cylinder 1 circumferential wall upper surface with top short cylinder 1 circumferential wall lower surface respectively.Monocline pull bar or the brace that intersects add the strength and stability of cylindrical shell, and cylindrical shell integral, flexible modulus can be made better, and internal fixtion intensity is enhanced, and can prevent fracture, stress fractures etc. situation.
The present invention adopts the syndeton of the column 2 between short cylinder 1 and pull bar 3 that bone trabecula can be allowed to be connected with the space of pull bar along the column between short cylinder and grows into, reach external callus in marrow to grow simultaneously, shorten healing time, reduce the various complication of fracture and operation.Adopt 2-10 root post 2 and the less Medullary fixation device of oblique drawbar 3 to be applicable to elderly population, be applicable to the large crowd of young and middle-aged labor intensity more than 10 root posts 2 and the more Medullary fixation device of oblique drawbar 3.
Show in figure, the circumferential inner wall of short cylinder 1 bottom has screw thread 4, and screw thread 4 matches with the nose threads of the handle of withdrawing device, is convenient to operating theatre staff and completes and insert and take out after union of fracture.
The column 2 of short cylinder 1 of the present invention and connection, pull bar 3 can adopt 3D printing technique to make or adopt integrally casting to complete.
Present invention utilizes bionical internal fixtion theoretical, adopt the Novel bionic Medullary fixation device more meeting instrument of skeleton anatomical structure especially biomethanics structure characteristic, make fracture recover to follow conduction and the load character of fracture self, fractures can be made to reach satisfied reset and healing effect.
The present invention is the innovation of reduction of the fracture technique for fixing, and solve especially after senile osteoporosis fractures, spongy bone healing is poor, affects bone healing intensity, sometimes may cause the hard nut to crack of fracture delayed union and refracture.
Micropore of the present invention bionical fracture Medullary fixation device is applicable to whole body long bone fracture internal fixation treatment, be particularly useful for the complicated trabecular bone structure fracture of juxtra-articular, in conjunction with the support of less invasive techniques and image navigation technology, there is good expection, significant economic and social benefit can be obtained.
Claims (4)
1. one kind can promote the Medullary fixation device of union of fracture, it is characterized in that: it is a cylinder or elliptical cylinder, cylinder or elliptical cylinder are upright or conformal with skeleton local curvature oblique cylindrical shell, cylindrical shell is connected to form by multiple short cylinder (1) and column (2), multiple short cylinder (1) is along central axis order arrangement up and down, column (2) is had to be connected between adjacent short cylinder (1), the top and bottom of column (2) are connected with below short cylinder (1) circumferential wall upper surface with top short cylinder (1) circumferential wall lower surface respectively, the centerline axis parallel of column (2) and cylinder or elliptical cylinder, multiple column (2) is uniform along cylinder or elliptical cylinder.
2. the Medullary fixation device that can promote union of fracture according to claim 1, it is characterized in that: between described adjacent column (2), also have pull bar (3) to connect, pull bar (3) is monocline pull bar or the brace that intersects, and the two ends of pull bar (3) are connected with below short cylinder (1) circumferential wall upper surface with top short cylinder (1) circumferential wall lower surface respectively.
3. the Medullary fixation device that can promote union of fracture according to claim 2, is characterized in that: described short cylinder (1) is 2-10, and the column (2) between adjacent short cylinder (1) is 2-50 root.
4. the Medullary fixation device that can promote union of fracture according to claim 3, is characterized in that: the circumferential inner wall of described short cylinder (1) bottom has screw thread (4), and screw thread (4) matches with the nose threads of the handle of withdrawing device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510773308.4A CN105232136A (en) | 2015-11-13 | 2015-11-13 | Intramedullary fixing device capable of effectively promoting fracture healing |
| PCT/CN2016/077139 WO2017080131A1 (en) | 2015-11-13 | 2016-03-23 | Intramedullary fixing device that can effectively promote fracture healing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510773308.4A CN105232136A (en) | 2015-11-13 | 2015-11-13 | Intramedullary fixing device capable of effectively promoting fracture healing |
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| Publication Number | Publication Date |
|---|---|
| CN105232136A true CN105232136A (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510773308.4A Pending CN105232136A (en) | 2015-11-13 | 2015-11-13 | Intramedullary fixing device capable of effectively promoting fracture healing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105919663A (en) * | 2016-06-08 | 2016-09-07 | 河北医科大学第三医院 | Elastic intramedullary nail with bionic internal fixation action |
| WO2017080131A1 (en) * | 2015-11-13 | 2017-05-18 | 陈伟 | Intramedullary fixing device that can effectively promote fracture healing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1018318A1 (en) * | 1999-01-07 | 2000-07-12 | Synos-Stiftung zur Förderung der Orthopädischen Chirurgie | Intramedullary nail |
| US20070282443A1 (en) * | 1997-03-07 | 2007-12-06 | Disc-O-Tech Medical Technologies Ltd. | Expandable element |
| CN101208053A (en) * | 2005-05-18 | 2008-06-25 | 索诺玛整形外科产品公司 | Minimally invasive actuable bone fixation devices, system and method of using the same |
| CN103417283A (en) * | 2013-08-14 | 2013-12-04 | 刘长城 | Intramedullary nail |
| CN104203132A (en) * | 2011-11-14 | 2014-12-10 | 不列颠哥伦比亚大学 | Intramedullary fixation system for management of pelvic and acetabular fractures |
| CN205144700U (en) * | 2015-11-13 | 2016-04-13 | 陈伟 | Can effectively promote marrow internal fixation device of union |
-
2015
- 2015-11-13 CN CN201510773308.4A patent/CN105232136A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070282443A1 (en) * | 1997-03-07 | 2007-12-06 | Disc-O-Tech Medical Technologies Ltd. | Expandable element |
| EP1018318A1 (en) * | 1999-01-07 | 2000-07-12 | Synos-Stiftung zur Förderung der Orthopädischen Chirurgie | Intramedullary nail |
| CN101208053A (en) * | 2005-05-18 | 2008-06-25 | 索诺玛整形外科产品公司 | Minimally invasive actuable bone fixation devices, system and method of using the same |
| CN104203132A (en) * | 2011-11-14 | 2014-12-10 | 不列颠哥伦比亚大学 | Intramedullary fixation system for management of pelvic and acetabular fractures |
| CN103417283A (en) * | 2013-08-14 | 2013-12-04 | 刘长城 | Intramedullary nail |
| CN205144700U (en) * | 2015-11-13 | 2016-04-13 | 陈伟 | Can effectively promote marrow internal fixation device of union |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017080131A1 (en) * | 2015-11-13 | 2017-05-18 | 陈伟 | Intramedullary fixing device that can effectively promote fracture healing |
| CN105919663A (en) * | 2016-06-08 | 2016-09-07 | 河北医科大学第三医院 | Elastic intramedullary nail with bionic internal fixation action |
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Application publication date: 20160113 |
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