Embolectomy devices

• US 10,292,804 B2
• Filed: 09/20/2016
• Issued: 05/21/2019
• Est. Priority Date: 09/21/2015
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Stryker Corporation, Stryker European Holdings I, LLC (Stryker Corporation)
• Inventors: Wang, Jiaxu, Grandfield, Ryan M.
• Primary Examiner(s): Tyson, Melanie R
• Application Number:
  US15/270,322
• Publication Number:
  US 20170079766A1
• Time in Patent Office: 973 Days
• Field of Search: 606127, 606200
• 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: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2002/016 made from wire-like elements

Abstract

An embolectomy device includes a clot engaging structure comprising a plurality of interconnected struts forming an open cell structure having an inner lumen, wherein the clot engaging structure is biased to expand or otherwise expandable from a radially constrained configuration to a radially expanded configuration when released from a delivery catheter into a blood vessel; and a support structure positioned within the inner lumen of the clot engaging structure, the support structure comprising a plurality of connectors connected to respective struts of the clot engaging structure, wherein the support structure connectors are biased to move or otherwise movable from a radially constrained configuration to a radially expanded configuration to thereby cause or otherwise assist and/or facilitate and maintain expansion of the open cell clot engaging structure.

Claims

1. An embolectomy device, comprising:

a clot engaging structure comprising a plurality of interconnected struts forming an open cell structure extending around a longitudinal axis of the device and having an inner lumen, wherein the clot engaging structure is biased to expand, or is otherwise expandable from, a radially constrained configuration to a radially expanded configuration when released from a delivery catheter into a blood vessel; and

a support structure positioned within the inner lumen of the clot engaging structure, the support structure comprising a plurality of connectors connected to respective struts of the clot engaging structure, the plurality of connectors spaced apart longitudinally along the longitudinal axis of the device,

wherein the connectors are biased to self-expand from a radially constrained configuration to a radially expanded configuration to thereby cause or otherwise assist and/or facilitate expansion of the clot engaging structure and/or establishing and maintaining an open cell structure thereof when the clot engaging structure is released from a delivery catheter into a blood vessel, and

wherein each connector of the plurality of connectors has a first end connected to a respective first strut of the clot engaging structure and a second end connected to a respective second strut of the clot engaging structure without being connected to a central support member.

2. The embolectomy device of claim 1, wherein the respective first and second struts are located on opposing sides of the clot engaging structure.

3. The embolectomy device of claim 1, wherein one or more of the connectors form an angle at their respective midpoint.

4. The embolectomy device of claim 1, wherein each of the connectors comprise a middle portion, and wherein the respective middle portions of one or more of the connectors includes a flexible section, bending point, living hinge or other suitable joint allowing hinge-like movement of the respective connector relative to the clot engaging structure.