Self-orienting rotating stentriever pinching cells

Patent metadata

Field	Value
Publication number	US-2022387055-A1
Application number	US-202117338830-A
Country	US
Kind code	A1
Filing date	Jun 4, 2021
Priority date	Jun 4, 2021
Publication date	Dec 8, 2022
Grant date	—

Abstract

A clot removal device for removing a clot from a body vessel, the clot removal device including: an elongated member sized to traverse vasculature and having a proximal end and a distal end, the elongated member comprising a longitudinal axis; and an engagement structure connected to the distal end of the elongated member, the engagement structure comprising a plurality of pinching cells connected to each other, the at least one pinching cell being configured to engage clot in an expanded deployed configuration and to pinch the clot upon actuation to the clot pinching configuration, a first pinching cell of the plurality of pinching cells being connected to a second pinching cell of the plurality of pinching cells such that the second pinching cell is rotatable respective the first pinching cell substantially about the longitudinal axis.

First claim

What is claimed is:

1 . A clot removal device for removing a clot from a body vessel, the clot removal device comprising:
an elongated member sized to traverse vasculature and having a proximal end and a distal end, the elongated member comprising a longitudinal axis; and an engagement structure connected to the distal end of the elongated member, the engagement structure comprising a plurality of pinching cells connected to each other, the plurality of pinching cell being configured to engage clot in an expanded deployed configuration and to pinch the clot upon actuation to a clot pinching configuration, a first pinching cell of the plurality of pinching cells being connected to a second pinching cell of the plurality of pinching cells such that the second pinching cell is rotatable respective the first pinching cell substantially about the longitudinal axis.

2 . The clot removal device of claim 1 , wherein the engagement structure is non-tubular.

3 . The clot removal device of claim 1 , wherein at least one of the plurality of pinching cells comprises a double pinching cell.

4 . The clot removal device of claim 1 , wherein the second pinching cell is fully rotatable respective the first pinching cell.

5 . The clot removal device of claim 1 , wherein the second pinching cell is rotatable respective the first pinching cell across an angle of about 180 degrees.

6 . The clot removal device of claim 1 , wherein the second pinching cell is rotatable respective the first pinching cell across an angle of about 90 degrees.

7 . The clot removal device of claim 1 , wherein a connection of the first pinching cell to the second pinching cell biases a rotational offset between the first pinching cell the first and second pinching cells.

8 . The clot removal device of claim 7 , wherein the biased rotational offset between the first and second pinching cells is between about 30 to about 150 degrees.

9 . The clot removal device of claim 1 , wherein the first pinching cell comprises a collar and the second pinching cell comprises a mating connector configured to rotatably connect with the collar.

10 . The clot removal device of claim 9 , wherein the mating connector comprises collapsible fingers for insertion into the collar.

11 . The clot removal device of claim 1 , wherein the plurality of pinching cells comprise alternating collar pinching cells and joiner pinching cells, the collar pinching cells comprising collars on a first end and a second end of the collar pinching cells, and the joiner pinching cells comprising mating connectors configured to rotatably connect with the collars on an a first end and a second end of the joiner pinching cells.

12 . The clot removal device of claim 1 , wherein the each of the plurality of pinching cells comprise a mating connector on a first end and a collar on a second end, the mating connector being configured to rotatably connect with the collar.

13 . The clot removal device of claim 1 , wherein a third pinching cell of the plurality of pinching cells is connected to the second pinching cell such that the third pinching cell is rotatable respective the second pinching cell.

14 . The clot removal device of claim 13 , wherein a degree of rotation of the third pinching cell respective the second pinching cell is less than a degree of rotation of the second pinching cell respective the first pinching cell.

15 . The clot removal device of claim 13 , wherein a degree of rotation of the third pinching cell respective the second pinching cell is greater than a degree of rotation of the second pinching cell respective the first pinching cell.

16 . The clot removal device of claim 1 , wherein the first pinching cell is connected to the distal end of the elongated member such that the first pinching cell is rotatable respective the elongated member.

17 . The clot removal device of claim 1 , wherein the plurality of pinching cells has three or fewer pinching cells in a chain of pinching cells.

18 . The clot removal device of claim 17 , wherein the plurality of pinching cells has two or fewer pinching cells in the chain of pinching cells.

19 . A clot removal device for removing a clot from a body vessel, the clot removal device comprising:
an elongated member sized to traverse vasculature and having a proximal end and a distal end, the elongated member defining a longitudinal axis; and an engagement structure connected to the distal end of the elongated member, the engagement structure comprising a pinching cell configured to engage the clot in an expanded deployed configuration and to pinch the clot upon actuation to a clot pinching configuration; the pinching cell being connected to the elongated member such that the pinching cell is rotatable respective the elongated member substantially about the longitudinal axis.

20 . A method for manufacturing a clot removal device, the method comprising:
forming a plurality of pinching cells, each of the plurality of pinching cells comprising connection means to rotatably connect to at least one other pinching cell of the plurality of pinching cells; connecting a first pinching cell of the plurality of pinching cells to an elongated member sized to traverse vasculature, the elongated member defining a longitudinal axis; and connecting a second pinching cell of the plurality of pinching cells to the first pinching cell via the respective connection means of the first pinching cell and the second pinching cell.

Assignees

• Neuravi Ltd

Inventors

• O'Malley Thomas

Classifications

• A61B2017/22035

  for retrieving or repositioning foreign objects · CPC title

• A61B17/22031 Primary

  Gripping instruments, e.g. forceps, for removing or smashing calculi (A61B17/221 takes precedence) · CPC title

• A61B2017/22034

  for gripping the obstruction or the tissue part from inside · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B17/221 Primary

  Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)} · CPC title