Device to Release a Self-Expanding Implant

• US 20180333284A1
• Filed: 06/26/2018
• Published: 11/22/2018
• Est. Priority Date: 12/01/2010
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Dorn, Jurgen, Dietrich, Daniel
• Granted Patent: US 10,821,013 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2/97 the outer sleeve being splittable
• CPC Class Codes: A61F 2002/9665 with additional retaining means

Abstract

A delivery device for a self-expanding implant, including an inner shaft, a slidable member disposed over the inner shaft, an actuation member, a rolling membrane, and a slitting member. The actuation member is coupled to the slidable member, and the rolling membrane is disposed over the self-expanding implant, the rolling member including a proximal end secured to the inner shaft, and a distal end secured to the slidable member. The slitting member includes a proximal end secured to the inner shaft, and a distal end secured to the slidable member, such that translation of the slidable member over the inner shaft in a proximal direction contemporaneously translates the rolling membrane and the slitting member in the proximal direction.

Claims

1. A delivery device for a self-expanding implant, comprising:

an inner shaft;

a slidable member disposed over the inner shaft;

an actuation member coupled to the slidable member;

a rolling membrane disposed over the self-expanding implant, the rolling member including a proximal end secured to the inner shaft, and a distal end secured to the slidable member; and

a slitting member, including a proximal end secured to the inner shaft, and a distal end secured to the slidable member, wherein translation of the slidable member over the inner shaft in a proximal direction contemporaneously translates the rolling membrane and the slitting member in the proximal direction.

2. The delivery device according to claim 1, wherein the rolling membrane comprises an outer sleeve and an inner sleeve, wherein the outer sleeve includes a plurality of slits.

3. The delivery device according to claim 2, wherein each of the plurality of slits have a length which is less than 20% of a length of the self-expanding implant.

4. The delivery device according to claim 2, wherein a first set of the plurality of slits is arranged co-linear along a length of the rolling membrane, and wherein a second set of the plurality of slits is arranged co-linear to the first set and evenly spaced therefrom.

5. The delivery device according to claim 2, wherein the slitting member comprises a wire that extends distally from the proximal end thereof to a distal end of the self-expanding implant, passes through the inner sleeve, and extends proximally between the inner sleeve and the outer sleeve to a point proximal of the self-expanding implant.

6. The delivery device according to claim 1, wherein the slitting member is arranged to commence at a point that is at or near a distal end of the self-expanding implant.

7. The delivery device according to claim 1, further comprising a pull wire coupled to the slidable member.

8. The delivery device according to claim 1, wherein the inner shaft defines a guidewire lumen.

9. The implant delivery device according to claim 1, wherein the rolling membrane comprises a cold-drawn polyethylene terephthalate material.

10. A method of releasing a self-expanding implant in a patient, comprising:

introducing the self-expanding implant to a target location via a delivery system, the delivery system comprising;

an inner shaft;

a slidable member disposed over the inner shaft;

an actuation member coupled to the slidable member;

a rolling membrane disposed over the self-expanding implant, the rolling member including a proximal end secured to the inner shaft, and a distal end secured to the slidable member; and

a slitting member, including a proximal end secured to the inner shaft, and a distal end secured to the slidable member;

actuating the actuation member to translate the slidable member over the inner shaft away from the self-expanding implant, thereby contemporaneously translating the rolling membrane and the slitting member away from the self-expanding implant member.