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Publication numberCA2421491 A1
Publication typeApplication
Application numberCA 2421491
Publication date1 Oct 2003
Filing date11 Mar 2003
Priority date1 Apr 2002
Also published asCA2421491C, EP1350473A2, EP1350473A3, US7037316, US7507246, US20020173812, US20060074441
Publication numberCA 2421491, CA 2421491 A1, CA 2421491A1, CA-A1-2421491, CA2421491 A1, CA2421491A1
InventorsJames F. Mcguckin, Jr., Peter W. J. Hinchliffe, Walter H. Peters
ApplicantRex Medical, L.P., James F. Mcguckin, Jr., Peter W. J. Hinchliffe, Walter H. Peters
Export CitationBiBTeX, EndNote, RefMan
External Links: CIPO, Espacenet
Rotational thrombectomy device
CA 2421491 A1
Abstract
A thrombectomy apparatus for breaking up thrombus or other obstructive material in a lumen of a vascular graft or vessel comprising a flexible sheath, and a wire positioned within the flexible sheath wherein the wire and flexible sheath are relatively movable. The wire is substantially sinuous in configuration and assumes a substantially sinuous shape when in the deployed position and assumes a straighter position in the retracted position. The wire is operatively connected to a motor for rotation of the wire to enable peaks of the sinuous wire to contact a wall of the lumen to break up the thrombus or other obstructive material.
Description  available in
Claims(21)
1. A thrombectomy apparatus for breaking up thrombus or other obstructive material in a lumen of a vascular graft or vessel, the apparatus comprising a flexible sheath and a wire positioned within the flexible sheath, the wire and flexible sheath being relatively movable so the wire has a first configuration and a second deployed configuration, the wire being sinuous in configuration and assuming its sinuous configuration when in the deployed configuration and having a straighter configuration in the first configuration, the wire being operatively connected to a motor for rotation of the wire to enable peaks of the sinuous wire to contact a wall of the lumen to break up the thrombus or other obstructive material.
2. The thrombectomy apparatus of claim 1, wherein the wire is composed of an inner core and an outer coil.
3. The thrombectomy apparatus of claim 2, wherein the inner core is formed by at least two wires twisted together.
4. The thrombectomy apparatus of any one of claims 2 and 3, wherein in manufacture the inner core is slid within the outer layer and welded together at proximal and distal ends.
5. The thrombectomy apparatus of any one of claims 1 to 4, wherein the wire is composed of a plurality of wires twisted together.
6. The thrombectomy apparatus of any one of claims 1 to 5, further comprising a soft blunt tip affixed to a distal end of the wire.
7. The thrombectomy apparatus of any one of claims 1 to 6, wherein a distal portion of the flexible sheath is at an angle to a longitudinal axis of the sheath.
8. The thrombectomy apparatus of any one of claims 1 to 7, further comprising a housing, the wire extending from the housing, the housing further including a battery and a motor for causing rotation of the wire.
9. The thrombectomy apparatus of any one of claims 1 to 8, further comprising a metal tube operatively connected to the motor, the wire connected to the metal tube such that rotation of the metal tube rotates the wire.
10. The thrombectomy apparatus of any one of claims 1 to 9, further comprising first and second balloons, and the flexible sheath has first and second lumens, the first lumen communicating with the first balloon and the second lumen communicating with the second balloon.
11. The thrombectomy apparatus of claim 10, wherein the first balloon is an angioplasty balloon and the second balloon is configured for engaging and pulling an arterial plug, wherein the first balloon is proximal of the second balloon.
12. The thrombectomy apparatus of any one of claims 1 to 10, further comprising an angioplasty balloon expandable radially with respect to the flexible sheath.
13. The thrombectomy apparatus of any one of claims 1 to 9 and 12, further comprising an inflatable balloon for engaging and pulling an arterial plug into the lumen of the graft, the balloon expandable radially with respect to the flexible sheath.
14. A thrombectomy apparatus comprising a flexible sheath and a rotatable wire positioned within the flexible sheath, the wire and flexible sheath being relatively slidable so the wire is movable between a substantially straightened position and a deployed position where it assumes a curved configuration, in the curved configuration the wire having a first arcuate region extending in a first direction and a second arcuate region spaced longitudinally from the first arcuate region and extending in a second direction, the first and second arcuate regions configured to break up thrombotic material as the wire spins.
15. A thrombectomy apparatus of claim 14, wherein the wire is formed of an inner core of twisted wires and an outer coil.
16. The thrombectomy apparatus of any one of claims 14 and 15, further comprising an expandable balloon and wherein the sheath contains a first lumen to receive the wire and a second lumen communicating with the balloon for injection of fluid to inflate the balloon.
17. A thrombectomy apparatus comprising a flexible sheath and a wire rotatably positioned within the flexible sheath, the wire composed of at least one wire forming an inner core and at least one wire around the inner core to form an outer layer, the wire having a first arcuate region extending in a first direction, a second arcuate region extending in a second direction, and a substantially linear region, the first and second arcuate regions breaking up thrombotic material in a vascular structure as the wire spins.
18. A thrombectomy apparatus comprising a flexible tube, a wire having a non-linear configuration and positioned within the flexible tube and rotatable with respect to the flexible tube, the wire having a non-linear configuration, first and second balloons inflatable to expand radially with respect to the flexible tube, and a motor for rotating the wire to break up thrombotic material as the wire rotates about its axis.
19. A thrombectomy apparatus for performing a thrombectomy procedure to break up thrombus from a graft functioning as a shunt between an artery and a vein, the apparatus comprising a flexible catheter having a declotting mechanism to break up thrombotic material or other obstructive material, a first angioplasty balloon inflatable to expand radially with respect to the flexible catheter to perform an angioplasty procedure, and a second balloon inflatable to a configuration capable of pulling vascular material into the graft.
20. The use of a thrombectomy device for breaking up the thrombotic material from a lumen of a vascular graft or vessel.
21. The use of a thrombectomy device for performing a thrombectomy procedure to break up thrombotic material in a vascular graft which forms a shunt between an artery and a vein.
Classifications
International ClassificationA61B17/32, H01J1/304, A61F2/958, A61B17/00, A61B17/22
Cooperative ClassificationA61M25/0032, A61M25/10, A61B2017/00734, H01J1/3042, A61B17/320758, A61M2025/0681, B82Y10/00, A61B2017/320733, A61B2017/22084, H01J2201/319, A61B2017/320008, A61B17/22, A61B17/22032, A61M25/0041, A61M25/1011
European ClassificationB82Y10/00, H01J1/304B, A61B17/22E2, A61B17/22, A61M25/00R2, A61M25/10, A61B17/3207R
Legal Events
DateCodeEventDescription
21 Feb 2008EEERExamination request
25 Apr 2016MKLALapsed
Effective date: 20160311