Axial lengthening thrombus capture system

• US 10,376,275 B2
• Filed: 09/10/2018
• Issued: 08/13/2019
• Est. Priority Date: 08/06/2015
• Status: Active Grant

• Current Assignee: Vascular Medcure Incorporated (Medtronic Plc)
• Original Assignee: KP Medcure, Inc.
• Inventors: Nguyen, Thanh Van, Nguyen, Duy, Ngo, Tung Hoang
• Primary Examiner(s): Woo, Julian W
• Application Number:
  US16/127,154
• Publication Number:
  US 20190015122A1
• Time in Patent Office: 337 Days
• 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 17/32075 Pullback cutting; combined forward and pullback cutting, e.g. with cutters at both sides of the plaque
• CPC Class Codes: A61B 17/320758 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 Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/00871 polymeric
• CPC Class Codes: A61B 2017/00938 hydrophobic
• CPC Class Codes: A61B 2017/00942 hydrophilic
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2017/22081 Treatment of vulnerable plaque
• CPC Class Codes: A61B 2017/22084 stone- or thrombus-dissolving
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2217 single wire changing shape to a gripping configuration
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395
• CPC Class Codes: A61B 2017/320716 comprising means for preventing embolism by dislodged material
• CPC Class Codes: A61B 2017/320775 Morcellators, impeller or propeller like means
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2002/016 : made from wire-like elements
• CPC Class Codes: A61M 1/79 : Filters for solid matter specially adapted for dental use A61C17/065

Abstract

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions.

Claims

1. A clot capture system, comprising:

a tubular body comprising a first end and a second end, the first end having an opening,

wherein the tubular body is transformable to a first expanded configuration in which the first end is expanded, wherein the second end is compressed in the first expanded configuration, wherein the tubular body is folded between the first end and the second end such that a compressed portion of the tubular body is within an expanded portion of the tubular body, wherein the tubular body has a first expanded axial length in the first expanded configuration and a first width along a majority of the first axial length in the first expanded configuration, and

wherein the tubular body is transformable to a second expanded configuration in which the tubular body has a second expanded axial length greater than the first expanded axial length and a second width along a majority of the second axial length substantially the same as the first width.

2. The clot capture system of claim 1, further comprising an expanding guide catheter.

3. The clot capture system of claim 1, further comprising a funnel tip catheter.

4. The clot capture system of claim 1, wherein the tubular body is configured to be retracted through a funnel opening of an expanding guide catheter.

5. The clot capture system of claim 1, wherein the tubular body is configured to at least partially surround a thrombus in the second expanded configuration.

6. The clot capture system of claim 1, wherein the tubular body is configured to retracted into an expanding guide catheter.

7. The clot capture system of claim 1, further comprising at least one anchor.

8. A clot capture system, comprising:

a tubular body comprising a first end and a second end, the first end having an opening,

wherein the tubular body is transformable to a first expanded configuration in which the first end is expanded, wherein the second end is compressed in the first expanded configuration, wherein the tubular body comprises a fold between an expanded portion of the tubular body and a compressed portion of the tubular body, wherein the compressed portion of the tubular body extends through the expanded portion of the tubular body, extends through the opening, and extends past the opening in the first expanded configuration, wherein the tubular body has a first expanded axial length in the first expanded configuration and a first width along a majority of the first axial length in the first expanded configuration, and

wherein the tubular body is transformable to a second expanded configuration in which the tubular body has a second expanded axial length greater than the first expanded axial length and a second width along a majority of the second axial length substantially the same as the first width.

9. The clot capture system of claim 8, further comprising a guide catheter.

10. The clot capture system of claim 9, wherein the guide catheter comprises a funnel tip.

11. The clot capture system of claim 9, wherein the tubular body is configured to be retracted through the guide catheter.

12. The clot capture system of claim 8, wherein the tubular body is configured to at least partially surround a thrombus in the second expanded configuration.

13. The clot capture system of claim 12, wherein the thrombus is configured to retracted into a guide catheter.

14. A clot capture system, comprising:

a tubular body comprising a first end and a second end, the first end having an opening,

wherein the tubular body is transformable to a first expanded configuration in which the first end and a first portion adjacent to the first end are expanded, wherein the second end and a second portion adjacent to the second end are compressed within a delivery instrument in the first expanded configuration, wherein the tubular body comprises a fold point between the first portion and the second portion, wherein the tubular body has a first expanded axial length in the first expanded configuration, and

wherein the tubular body is transformable to a second expanded configuration in which the second portion of the tubular body exits the delivery instrument and expands such the tubular body has a second expanded axial length greater than the first expanded axial length.

15. The clot capture system of claim 14, further comprising an expandable catheter.

16. The clot capture system of claim 15, wherein the expandable catheter comprises an expandable tip.

17. The clot capture system of claim 15, wherein the tubular body is configured to be retracted through the expandable catheter.

18. The clot capture system of claim 15, wherein the expandable catheter is positioned proximal to the distal point in the first expanded configuration.

19. The clot capture system of claim 14, wherein the tubular body is configured to retracted proximally.

20. The clot capture system of claim 14, wherein the tubular body is configured to transform to the second expanded configuration to redistribute a thrombus therein.