Delivery device with an expandable positioner for positioning a prosthesis

Patent metadata

Field	Value
Publication number	US-10932932-B2
Application number	US-201815958687-A
Country	US
Kind code	B2
Filing date	Apr 20, 2018
Priority date	Dec 8, 2014
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A prosthesis delivery device having a cannula with an expandable positioning device disposed at the proximal end thereof is disclosed. A prosthesis is retained on the cannula distal of the expandable device. Expansion of the expandable device retains and centers the delivery device and the prosthesis carried thereon in the vessel and allows repositioning of the prosthesis without contacting the proximal end of the prosthesis with the vessel walls prior to deployment.

First claim

The invention claimed is:

1. A prosthesis delivery device comprising:
a delivery cannula having a longitudinal axis and an expandable proximal region, the expandable proximal region comprising a proximal end and a distal end and a plurality of expandable wings extending between the proximal and distal ends;
wherein the expandable wings comprise a radially outwardly expanded condition and a radially inwardly contracted condition, and wherein the expandable wings are expanded radially outwardly by urging together the proximal and distal ends of the expandable proximal region along the longitudinal axis.

2. The delivery device of claim 1 wherein the expandable proximal region comprises a malecot.

3. The delivery device of claim 1 further comprising a prosthesis retained on the delivery cannula, wherein the prosthesis has a proximal end releasably attached to the cannula.

4. The delivery device of claim 3 wherein the prosthesis comprises a stent graft comprising a proximal bare stent.

5. The delivery device of claim 4 wherein the proximal bare stent comprises at least one anchoring mechanism configured to engage a vessel wall.

6. The delivery device of claim 5 wherein the at least one anchoring mechanism of the bare stent is prevented from engaging a vessel wall when the expandable proximal region is in an expanded configuration.

Assignees

• Cook Medical Technologies Llc

Inventors

• Havel William J
• Huser Matt
• Kratzberg Jarin
• Ringenberger Kimberly

Classifications

• A61F2/9662 Primary

  the middle portion of the stent or stent-graft is released first · CPC title

• A61F2230/001

  Figure-8-shaped, e.g. hourglass-shaped · CPC title

• A61M25/0074

  Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable · CPC title

• A61M2025/1047

  having centering means, e.g. balloons having an appropriate shape · CPC title

• A61F2250/0039

  differing in diameter · CPC title