Heart valve prosthesis delivery system and method for delivery of heart valve prosthesis with introducer sheath and loading system
AssigneeJenaValve Technology, Inc.
InventorsStefan Schreck, Hussain Rangwala, Payam Saffari, Makensley Lordeus, Vincent Ming Hai Chow, Kevin Hang Tang Chu
Life of this patent
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Abstract
The present disclosure relates to a delivery catheter and the stepwise release of a stent from the catheter into the vasculature of a patient, as well as a loading device for a transcatheter heart valve (THV) prosthesis.
Claims25
A catheter system for deployment of a heart valve prosthesis, the catheter system comprising:
- a first retaining sleeve configured to house a first portion of the heart valve prosthesis in a first compressed state;
- a second retaining sleeve disposed distal to the first retaining sleeve and configured to house a second portion of the heart valve prosthesis in a second compressed state;
- a catheter shaft extending between and coupled to the first retaining sleeve and the second retaining sleeve;
- and
- a stent holder configured to be disposed within the first retaining sleeve to releasably engage the heart valve prosthesis in a first position and to move relative to the first retaining sleeve to a second position to deploy the heart valve prosthesis,
- wherein the second retaining sleeve is axially movable with respect to the catheter shaft, the first retaining sleeve is axially fixated to the catheter shaft, the stent holder is axially movable with respect to the catheter shaft, and the first retaining sleeve and the second retaining sleeve are configured to house the heart valve prosthesis such that an exposed portion of the heart valve prosthesis extends between the first retaining sleeve and the second retaining sleeve.
A method for deploying a heart valve prosthesis using a catheter system comprising a first retaining sleeve, a second retaining sleeve disposed distal to the first retaining sleeve, a catheter shaft extending between and coupled to the first retaining sleeve and the second retaining sleeve, and a stent holder configured to be disposed within the first retaining sleeve, the method comprising:
- retaining a heart valve prosthesis in a compressed state such that the first retaining sleeve houses a first portion of the heart valve prosthesis, the second retaining sleeve houses a second portion of the heart valve prosthesis independently deployable from the first portion, and the stent holder releasably engages the heart valve prosthesis;
- releasing the second portion of the heart valve prosthesis by axially moving with respect to the catheter shaft the second retaining sleeve in a first direction;
- moving the stent holder axially with respect to the catheter shaft in a second direction that is the same as the first direction;
- and
- causing the stent holder to release the heart valve prosthesis to deploy the heart valve prosthesis.
Dependencies are inferred from the claim text.