DEVICES FOR REMOVING VESSEL OCCLUSIONS

• US 20140309673A1
• Filed: 11/09/2012
• Published: 10/16/2014
• Est. Priority Date: 11/11/2011
• Status: Abandoned Application

• Current Assignee: Nathan John Dacuycuy
• Original Assignee: Nathan John Dacuycuy
• Inventors: Ma, Jianlu, Dacuycuy, Nathan John
• Application Number:
  US14/357,547
• Publication Number:
  US 20140309673A1
• Time in Patent Office: Days
• US Class Current: 606/159
• 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 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61L 2400/10 Materials for lubricating medical devices
• CPC Class Codes: A61L 2400/16 Materials with shape-memory or superelastic properties
• CPC Class Codes: A61L 2400/18 Modification of implant surfaces in order to improve biocompatibility, cell growth, fixation of biomolecules, e.g. plasma treatment
• CPC Class Codes: A61L 31/022 Metals or alloys
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: A61L 31/14 Materials characterised by their function or physical properties , e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque

Abstract

Described herein are thrombectomy devices and methods of using same for capturing or encapsulating and removal of a blood or vessel.

Claims

1. A thrombectomy device comprising:

a substantially cylindrical body formed from a single piece of tubing and including a proximal delivery portion, a transition portion, and an expandable treatment portion,

wherein the expandable treatment portion includes one or more struts configured to engage, capture, or encapsulate substantially all of a luminal occlusion.

2. The thrombectomy device of claim 1, wherein the single piece of tubing is formed of a nitinol super elastic material or nitinol shape memory alloy.

3. The thrombectomy device of claim 1, wherein the substantially cylindrical body is formed by laser cutting, mechanical machining, chemical machining, electro chemical machining, electrical discharge machining, or a combination thereof.

4. The thrombectomy device of claim 1, wherein the substantially cylindrical body has a variable diameter.

5. The thrombectomy device of claim 1, wherein the substantially cylindrical body has variable wall thickness.

6. The thrombectomy device of claim 1, wherein the substantially cylindrical body includes an inner lumen configured for local drug delivery.

7. The thrombectomy device of claim 1, further comprising at least one radiopaque element.

8. The thrombectomy device of claim 7, wherein the at least one radiopaque element is a marker band or a marker coil.

9. The thrombectomy device of claim 1, wherein the transition portion is a straight piece of tubing, a tubing with a spiral cut through the entire wall thickness, a tubing with spiral cut not through the entire wall thickness, or a combination thereof.

10. The thrombectomy device of claim 1, wherein the proximal delivery portion and the transition portion are each independently at least partially coated by biocompatible materials for lubricity.

11. The thrombectomy device of claim 1, wherein the proximal delivery portion is a straight piece of tubing having a variable diameter, a variable wall thickness, or a combination thereof.

12. The thrombectomy device of claim 1, wherein the expandable treatment portion is coated with a polymer having positive charge or a negative charge for improved clot adhesion.

13. The thrombectomy device of claim 1, wherein the treatment portion is mechanically or chemically treated to have a rough surface for improved clot adhesion.

14. The thrombectomy device of claim 13, wherein the rough surface is a porous surface coating, a porous surface layer, a microblasted surface, a micropinning, an irregularly configured strut geometry, or a combination thereof.

15. The thrombectomy device of claim 1, wherein the treatment portion can have peaks and valleys for clot retention and retrieval.

16. The thrombectomy device of claim 1, wherein the struts form spiral configuration along the treatment portion to facilitate device delivery and clot retention and retrieval.

17. The thrombectomy device of claim 1, wherein the struts are twisted for clot interaction.

18. The thrombectomy device of claim 1, further comprising a marker wire within the inner lumen.

19-75. -75. (canceled)