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 Han 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.
Claims13
A system for repairing a cardiac valve, the system comprising:
- a valve prosthesis
- a delivery system comprising a handle at a proximal end of the delivery system, an end region at a distal end of the delivery system, and a catheter extending between the handle and the end region of the delivery system,
- the end region of the delivery system comprising a distal sleeve configured to constrain a distal portion the valve prothesis and a proximal sleeve configured to constrain, together with a stent holder disposed within the proximal sleeve, a proximal portion of the valve prosthesis, the stent holder configured to be removably coupled to the proximal portion of the valve prosthesis and to selectively move with respect to the proximal sleeve, and
- the valve prosthesis is configured to be sequentially released using the handle in mechanical communication with the end region of the delivery system, the valve prosthesis being self-expandable,
- wherein the proximal sleeve of the delivery system and the distal sleeve of the delivery system are configured to constrain the valve prosthesis such that an exposed portion of the valve prosthesis extends between the proximal sleeve of the delivery system and the distal sleeve of the delivery system when the distal sleeve of the delivery system is in a proximal-most position and the proximal sleeve of the delivery system is in a distal-most position, the exposed portion self-expanding radially beyond the proximal sleeve of the delivery system and the distal sleeve of the delivery system, and
- wherein the distal sleeve is configured to move distally to release the distal portion of the valve prosthesis and the stent holder is configured to move distally, subsequent to the distal sleeve moving distally, to fully release the valve prosthesis from the delivery system.
A method for preparing a system for repairing a cardiac valve, the system comprising a valve prosthesis that is self-expandable and a first segment of a delivery system comprising a handle at a proximal end of the delivery system, an end region at a distal end of the delivery system, and a catheter extending between the handle and the end region of the delivery system, the end region of the delivery system comprising a distal sleeve configured to constrain a distal portion the valve prothesis and a proximal sleeve configured to constrain, together with a stent holder disposed within the proximal sleeve, a proximal portion of the valve prosthesis, the stent holder configured to be removably coupled to the proximal portion of the valve prosthesis and to selectively move with respect to the proximal sleeve, the method comprising:
- engaging the stent holder of the delivery system with the valve prosthesis,
- engaging the distal sleeve of the delivery system with the distal portion of the valve prosthesis;
- and
- wherein the proximal sleeve of the delivery system and the distal sleeve of the delivery system are configured to contact and constrain the valve prosthesis such that an exposed portion of the valve prosthesis extends between the proximal sleeve of the delivery system and the distal sleeve of the delivery system when the distal sleeve of the delivery system is in a proximal-most position and the proximal sleeve of the delivery system is in a distal-most position, the exposed portion self-expanding radially beyond the proximal sleeve of the delivery system and the distal sleeve of the delivery system, and
- wherein the distal sleeve is configured to move distally to release the distal portion of the valve prosthesis and the stent holder is configured to move distally, subsequent to the distal sleeve moving distally, to fully release the valve prosthesis from the delivery system.
Dependencies are inferred from the claim text.