Thrombo-embolic protection and embolectomy/thrombectomy devices and methods

Patent metadata

Field	Value
Publication number	US-2016287283-A1
Application number	US-201514884491-A
Country	US
Kind code	A1
Filing date	Oct 15, 2015
Priority date	Oct 17, 2014
Publication date	Oct 6, 2016
Grant date	—

Abstract

A device for intra-vascular embolic-thrombolic protection, as well as embolectomy/thrombectomy and atherectomy interventional procedures and methods. At least a portion of the working end of the device may be formed monolithically from a single hypodermic tube, or may be formed of monolithic inner and outer tubes with fixed or movable guide wire elements and imaging modalities. The device may comprise structures enabling coring, expansion within a vascular structure and vascular wall shaving, as well as filtration, stabilization and capturing of thrombotic or embolitic material during an intervention procedure.

First claim

What is claimed is:

1 . A device, comprising:
a handle; a first tube coupled to the handle, a distal portion of the first tube defining a work element comprising:
a proximal end;
a distal end; and
a plurality of slats formed by cutting the first tube between the proximal end and the distal end of the work element such that each of the plurality of slats spans a non-zero radial angle from the proximal end of the work element to the distal end of the work element.

2 . The device of claim 1 , further comprising a nosecone coupled to the distal end of the work element.

3 . The device of claim 3 , wherein the nose cone comprises a plurality of cutting elements.

4 . The device of claim 2 , wherein a distal end of each of the plurality of slats is coupled to the nosecone.

5 . The device of claim 4 , wherein differential rotation of the nosecone relative to the first tube or differential rotation of the first tube relative to the nose cone causes radial movement of the plurality of slats.

6 . The device of claim 1 , wherein the plurality of slats in at least a portion of the work element form a spiral pattern.

7 . The device of claim 1 , wherein the plurality of slats in at least a portion of the work element are substantially parallel to a long axis of the first tube.

8 . The device of claim 1 , wherein the plurality of slats are configured to selectively bow radially outward and radially inward between the proximal end of the work element and the distal end of the work element.

9 . The device of claim 1 , wherein the plurality of slats are configured to selectively bow radially outward and bow radially inward in response to differential rotation of the nose cone and the first tube.

10 . The device of claim 1 , wherein the plurality of slats are configured to selectively bow radially outward and bow radially inward in response to respective torsional forces applied to the first tube.

11 . The device of claim 2 , further comprising a second tube rotatably coupled to the handle and disposed co-axially with the first tube, coupled to the nosecone.

12 . The device of claim 11 , configured such that differential rotation of the first and second tubes causes the plurality of slats to move in a radial direction.

13 . The device of claim 1 , wherein at least a proximal portion of each of the plurality of slats is configured to be drawn toward the distal end of the work element until a proximal portion of each of the plurality of slats defines an angle of less than 90 degrees with a corresponding distal portion thereof.

14 . The device of claim 1 , wherein at least a proximal portion of each of the plurality of slats is configured to be drawn toward the distal end of the work element until circumferential rim is formed.

15 . The device of claim 1 , wherein each of the plurality of slats forms a living hinge that is formed from the first tube.

16 . The device of claim 1 , wherein each of the plurality of slats is formed by laser cutting the distal portion of the first tube along a predetermined path.

17 . The device of claim 16 , wherein at least a portion of the predetermined path forms a non-zero angle relative to a long axis of the first tube.

18 . The device of claim 1 , wherein at least one of the plurality of slats comprises a cutting edge.

19 . The device of claim 1 , configured as an embolectomy device.

20 . The device of claim 1 , configured as a thrombo-embolic protective device.

21 . The device of claim 1 , configured as an atherectomy device.

22 . The device of claim 1 , configured for insertion in a patient vasculature and configured, in operation, to enable blood flow at least from a point distal to the work element to a point proximal thereto.

23 . A method, comprising:
providing a device comprising a rotatable first tube, a distal end portion of which defines a plurality of flexible slats that span a non-zero radial angle over at least a portion of their extent; inserting the distal end portion of the device into a vasculature of a patient; while rotating the first tube:
radially expanding the plurality of slats; and
cutting tissue from walls of the vasculature;
retracting the plurality of slats toward a long axis of the first tube; and

removing the distal end portion of the device from the vasculature of the patient.

24 . The method of claim 23 , wherein at least a proximal portion of each of the plurality of slats is configured to be drawn distally until a proximal portion of each of the plurality of slats defines an angle of less than 90 degrees with a corresponding distal portion thereof.

Assignees

• Transmed7 Llc

Inventors

• Vetter James W
• Vetter Eugene H

Classifications

• A61B2017/2212

  having a closed distal end, e.g. a loop · CPC title

• A61B17/320758

  with a rotating cutting instrument, e.g. motor driven (A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002) · CPC title

• A61F2002/018

  made from tubes or sheets of material, e.g. by etching or laser-cutting · CPC title

• A61B2017/22079

  with suction of debris · CPC title

• A61B17/221

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