DEVICE AND METHOD INVOLVING STABILIZATION DURING CLOT REMOVAL

• US 20120165859A1
• Filed: 10/24/2011
• Published: 06/28/2012
• Est. Priority Date: 08/29/2008
• Status: Active Grant

• Current Assignee: Rapid Medical Ltd.
• Original Assignee: Rapid Medical Ltd.
• Inventors: ECKHOUSE, Ronen, Sudin, Yuri, Eckhouse, Shimon
• Granted Patent: US 9,034,008 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/00685 Archimedes screw
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/2217 single wire changing shape to a gripping configuration
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other

Abstract

A clot removal device and method may employ a shaft and a clot engagement element on an end of the shaft. The clot engagement element and the shaft may be configured for deployment in a blood vessel. The clot removal device may also include a stabilizer configured to at least partially surround the shaft and to maintain a portion of the shaft in a non-contacting relationship with the blood vessel wall.

Claims

1. A clot removal device, comprising:

a shaft;

a clot engagement element on an end of the shaft, the clot engagement element and the shaft being configured for deployment in a blood vessel; and

a stabilizer configured to at least partially surround the shaft and to maintain a portion of the shaft in a non-contacting relationship with the blood vessel wall.

2. The device of claim 1, wherein the clot engagement element is a coil.

3. The device of claim 2, wherein the coil includes a plurality of windings having a substantially constant pitch.

4. The device of claim 2, wherein the coil includes a plurality of windings having a substantially constant radius.

5. The device of claim 2, wherein the stabilizer is configured to maintain the coil in a generally axial orientation in the blood vessel.

6. The device of claim 1, further comprising a clot capture element, and wherein the stabilizer is connected to the clot capture element.

7. The device of claim 6, wherein the clot capture element is a mesh-like tube, and wherein the stabilizer includes an opening in an end of the mesh-like tube.

8. The device of claim 6, wherein the stabilizer includes a portion of a control shaft extending from a proximal end of the clot capture element.

9. A clot removal device, comprising:

a shaft;

a clot engagement element on an end of the shaft, the clot engagement element including a rotatable coil, wherein the coil extends from the shaft, and wherein the shaft and the coil are configured for deployment in a blood vessel; and

a stabilizer, including an opening through which the shaft passes, the stabilizer being configured to maintain the shaft generally in a center of the blood vessel during rotation of the coil.

10. The device of claim 9, wherein the stabilizer includes a tube with a tapered end, and wherein the opening is located in the tapered end.

11. The device of claim 10, wherein the tube is made of a mesh-like structure.

12. The device of claim 11, wherein the mesh-like structure is configured to contract radially when the tube is retracted in a longitudinal direction of the vessel.

13. A method for removing a clot from a blood vessel, the method comprising the steps of:

deploying a clot engagement element in a blood vessel, the clot engagement element located on an end of a shaft; and

deploying a stabilizer in the blood vessel in a manner at least partially surrounding the shaft, and to maintain a portion of the shaft in a non-contacting relationship with a wall of the blood vessel.

14. The method of claim 13, further comprising positioning the stabilizer in a location adjacent the clot engagement element, and wherein the stabilizer is configured to substantially center the clot engagement element in the vessel.

15. The method of claim 14, further comprising the step of rotating the clot engagement element about a clot while the clot engagement element is substantially centered by the stabilizer.

16. The method of claim 13, wherein the clot engagement element is a coil.

17. The method of claim 16, wherein the coil includes a plurality of windings having a substantially constant pitch.

18. The method of claim 16, wherein the coil includes a plurality of windings having a substantially constant radius.

19. The method of claim 16, wherein the stabilizer maintains the coil in a generally axial orientation of the blood vessel.

20. The method of claim 13, further comprising the step of deploying a clot capture element in the blood vessel, and wherein the stabilizer is connected to the clot capture element.

21. The method of claim 13, wherein the clot capture element is a mesh-like tube, and wherein the stabilizer includes an opening in an end of the mesh-like tube.

22. The method of claim 21, wherein the stabilizer includes a control shaft extending from a proximal end of the clot capture element.