Handle mechanism and functionality for repositioning and retrieval of transcatheter heart valves

• US 9,744,037 B2
• Filed: 03/14/2014
• Issued: 08/29/2017
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Regents of the University of California (University of California)
• Original Assignee: California Institute of Technology, Regents of the University of California (University of California)
• Inventors: Kheradvar, Arash, Kelley, Gregory S., Gharib, Morteza
• Primary Examiner(s): Miles, Jonathan
• Assistant Examiner(s): Miles, Wade
• Application Number:
  US14/212,860
• Publication Number:
  US 20140316518A1
• Time in Patent Office: 1,264 Days
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2250/0006 for adjusting angular orientation

Abstract

Improved catheter devices for delivery, repositioning and/or percutaneous retrieval of percutaneously implanted heart valves are described, including a medical device handle that provides an array of features helpful in conducting a percutaneous heart valve implantation procedure while variously enabling radial expansion or contraction and/or lateral positioning control over the heart valve during the medical procedure.

Claims

1. A medical device handle, the handle comprising:

an elongate body;

a plurality of filaments, the body adapted to receive the plurality of filaments for connection to a stent frame in a radial orientation;

a slide lock adapted to slide along the body;

a pivot fitment connected to the plurality of filaments, the plurality of filaments spaced in a radial orientation matching the radial orientation of the plurality of filaments at the stent frame; and

a spherical bearing surface,

wherein the pivot fitment rides on the spherical bearing surface,

wherein in a first axial position, the slide lock permits no rotation of the fitment around and no tilting of the fitment relative to an axis of the body,

wherein in a second axial position, the slide lock permits rotation of the fitment around but no tilting relative to the body axis, and

wherein in a third axial position, the slide lock permits tilting of the fitment relative to the axis of the body.

2. The handle of claim 1, wherein in the third axial position the slide lock permits no rotation of the fitment around the axis of the body.

3. The handle of claim 1, wherein the body includes a lumen for receiving the plurality of filaments.

4. The handle of claim 1, further comprising a catheter hub including a flushing port.

5. The handle of claim 1, wherein the body includes at least one side port.

6. The handle of claim 5, wherein a plurality of side ports are provided.

7. The handle of claim 1, further comprising a plurality of slots for the plurality of filaments.

8. The handle of claim 1, further comprising a ring proximal to the fitment for simultaneously removing the plurality of filaments upon being cut.

9. The handle of claim 1, further comprising a guidewire access port.

10. The handle of claim 1, wherein the fitment includes a socket receiving the slide lock in the first and second axial positions.