DEVICE AND METHOD FOR CLOT ENGAGEMENT AND CAPTURE

• US 20120041449A1
• Filed: 10/24/2011
• Published: 02/16/2012
• Est. Priority Date: 08/29/2008
• Status: Active Grant

• Current Assignee: Rapid Medical Ltd.
• Original Assignee: Rapid Medical Ltd.
• Inventors: Sudin, Yuri, Eckhouse, Shimon, ECKHOUSE, Ronen
• Granted Patent: US 8,758,364 B2
• Time in Patent Office: Days
• US Class Current: 606/127
• 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
• CPC Class Codes: A61B 2017/00871 polymeric
• 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 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2002/016 made from wire-like elements

Abstract

A clot removal device and method for removing a clot from a blood vessel may include an expandable clot engagement element, an expandable clot capture element, and a sheath surrounding and compressing the capture element and the engagement element. The sheath may be removable to thereby enable the capture element to expand in a blood vessel in which the sheath is deployed, and to enable the engagement element to expand within the capture element.

Claims

1. A clot removal device, comprising:

an expandable clot engagement element;

an expandable clot capture element; and

a sheath surrounding and compressing the capture element and the engagement element, the sheath being removable to thereby enable the capture element to expand in a blood vessel in which the sheath is deployed, and to enable the engagement element to expand within the capture element.

2. The device of claim 1, wherein the capture element surrounds the engagement element.

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

4. The device of claim 1, wherein the capture element includes a mesh-like structure.

5. The device of claim 1, wherein the engagement element is sized to be movable within the capture element upon removal of the sheath.

6. The device of claim 1, wherein the engagement element is sized to be rotatable within the capture element upon removal of the sheath.

7. The device of claim 1, wherein the capture element has a length that is longer than a length of the engagement element.

8. The device of claim 1, further comprising a locking mechanism for locking the clot engagement element within the clot capture element.

9. The device of claim 1, wherein the capture element is sized so that in a deployed state it engages a blood vessel wall, and wherein the engagement element is sized so that in a deployed state the engagement element is movable within the capture element.

10. The device of claim 1, wherein the capture element and the engagement element are configured such that when used, the engagement element is between the capture element and the clot.

11. A method of removing a clot from a blood vessel comprising the steps of:

deploying a clot removal device in a blood vessel at a clot site, the clot removal device including, an expandable clot engagement element, an expandable clot capture element, and a sheath surrounding and compressing the capture element and the engagement element; and

removing the sheath from the capture element and the engagement element such that the capture element expands within the blood vessel, and the engagement element expands within the capture element.

12. The method of claim 11, wherein the capture element surrounds the engagement element.

13. The method of claim 11, wherein the engagement element is a coil.

14. The method of claim 11, wherein the capture element includes a mesh-like structure.

15. The device of claim 11, wherein the engagement element moves within the capture element upon removal of the sheath.

16. The method of claim 11, wherein the engagement element rotates within the capture element upon removal of the sheath.

17. The method of claim 11, wherein the capture element has a length that is longer than a length of the engagement element.

18. The method of claim 11, further comprising the step of using a locking mechanism to lock the clot engagement element within the clot capture element.

19. The method of claim 11, wherein the capture element engages the blood vessel wall in a deployed state, and wherein the engagement element moves within the capture element in the deployed state.

20. The method of claim 11, wherein when the capture element and the engagement element are used, the engagement element is between the capture element and the clot.