MULTI-BASKET CLOT CAPTURING DEVICE

• US 20180110606A1
• Filed: 10/26/2016
• Published: 04/26/2018
• Est. Priority Date: 10/26/2016
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: GOROCHOW, Lacey
• Granted Patent: US 10,517,708 B2
• Time in Patent Office: Days
• 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 17/221 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 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61F 2/012 Multiple filtering units
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2230/0023 triangular
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0086 Pyramidal, tetrahedral, or wedge-shaped

Abstract

A multi-basket clot capturing device that includes a distal basket connected to a wire. The distal basket may be positionable distal of the clot and operable to capture a distal portion of a clot. A proximal basket may be connected to a hypotube that is slidably axially connected to the wire. The proximal basket may be positionable proximal of the clot and operable to capture a proximal portion of the clot. A cage can form between the proximal and distal baskets around multiple portions of the clot for capturing the clot. Sliding the wire distally, or microcatheter proximally, relative to the clot causes the distal basket to move from a collapsed state to an expanded state. The cage may be around at least two portions of the clot that are opposed.

Claims

1. A multi-basket clot capturing device, comprising:

a distal basket connected to a wire, the distal basket being positionable distal of the clot and operable to capture a distal portion of a clot;

a proximal basket connected to a hypotube that is slidably axially connected to the wire, the proximal basket being positionable proximal of the clot and operable to capture a proximal portion of the clot; and

a cage formable between the proximal and distal baskets, the cage being formable around multiple portions of the clot for capturing the clot;

wherein sliding the hypotube or the wire distally relative to the clot causes the distal basket to move from a collapsed state to an expanded state distal of the clot.

2. The device of claim 1, wherein the cage forms around at least two portions of the clot that are opposed.

3. The device of claim 1, wherein the distal and/or proximal baskets comprise a closed end and an open end;

and

wherein a frame of the respective basket is defined between the closed and open end of the respective basket thereby forming a chamber operable to capture a portion of the clot.

4. The device of claim 3, wherein the frame is adjustable between a plurality of sizes.

5. The device of claim 1, further comprising:

a microcatheter deliverable to a region of interest in a vasculature, the hypotube and the wire being slidably and axially within the microcatheter, and the distal and proximal baskets being collapsible within the microcatheter.

6. The device of claim 5, wherein moving the wire distally from the microcatheter causes the distal basket to move from the collapsed state to the expanded state whereby a frame of the distal basket is capable of capturing a distal portion of the clot;

wherein moving the hypotube away from the distal basket causes the proximal basket to move from a collapsed state to an expanded state whereby the proximal basket is capable of capturing a proximal portion of the clot opposite the distal portion of the clot; and

wherein the cage is formable between the proximal and distal baskets thereby forming the cage around the proximal and distal portions of the clot.

7. The device of claim 1, further comprising:

a plurality of struts of the distal basket; and

a plurality of spoke members pivotally connected between the struts and a distal end of the hypotube;

wherein moving the hypotube distally causes the spoke members to expand the distal basket distal of the clot.

8. The device of claim 7, wherein a plurality of interstices are formed from the plurality of struts.

9. The device of claim 7, wherein the spoke members are formed by cutting or etching into the hypotube.

10. The device of claim 7, wherein the spoke members are radially spaced about the hypotube.

11. The device of claim 1, wherein the hypotube is axially connected to the proximal basket.

12. The device of claim 1, wherein the wire is axially connected to the distal basket.

13. A method for removing a clot from vasculature of a patient, comprising the steps of:

introducing a clot capturing device into a region of interest of the vasculature, the device comprising a distal basket connected to a wire and a proximal basket connected to a hypotube that is axially and slidably connected to the wire, the distal basket being operable to be positioned distal of and capture a distal portion of the clot;

moving the wire connected to the distal basket distal to the clot thereby causing the distal basket to be positioned distal of the clot and expand away from a microcatheter connected to the wire and hypotube;

moving the wire until the distal basket captures the distal portion of the clot;

moving the microcatheter causing a proximal basket of the clot capturing device to be positioned proximal of the clot and expand, the proximal basket being operable to capture a proximal portion of the clot;

moving the wire connected to the distal basket until contacting a distal end of the hypotube forming a cage around the clot between the proximal and distal baskets.

14. The method of claim 13, further comprising:

removing the clot from the region of interest of the vasculature.

15. The method of claim 13, further comprising:

forming a plurality of interstices on at least one of the distal and proximal baskets for capturing the clot;

pivotally connecting a plurality of spoke members of the hypotube to a plurality of struts of the distal basket; and

moving the hypotube distally away from the microcatheter, while keeping the wire connected to the distal basket in place, thereby causing the distal basket to expand.

16. The method of claim 15, further comprising:

forming a plurality of interstices from the struts.

17. The method of claim 16, further comprising:

forming the spoke members by cutting or etching into the distal end of the hypotube.

18. The method of claim 15, further comprising:

radially spacing the spoke members about the hypotube.

19. The method of claim 13, further comprising:

axially connecting the hypotube to a central vertex of the proximal basket; and

/or

axially connecting the wire to a central vertex of the distal basket.

20. A method for deploying a basket of a multi-basket clot capturing device, the method comprising:

expanding a frame of the basket about a first portion of a clot, the frame being slidably axially connected to a hypotube and a wire, the frame being expanded by;

sliding outwardly a distal end of the hypotube about the wire when the frame is collapsed and aligned with the hypotube and the wire; and

radially pivoting a plurality of spokes attached between a distal end of a hypotube and a plurality of struts of the basket.