Catheter assembly with prosthesis crimping and prosthesis retaining accessories
AssigneeMedtronic Vascular Galway Unlimited Company
InventorNoam Miller
Life of this patent
Estimating the term…
Abstract
A prosthesis retaining assembly for securing an implantable prosthesis to a catheter assembly can include a first member including a prosthesis retaining slot configured to retain a portion of the prosthesis. The retaining slot can have a first portion with a first width and a second portion with a second width. The first portion can be distal to the second portion. The second width can be larger than the first width, and the retaining slot can have an opening at a first surface of the first member. The prosthesis retaining assembly can also include a second member configured to be move relative to the first member. The second member can be configured to move to a position that obstructs a portion of the opening of the retaining slot.
Claims17
A prosthesis retaining assembly for securing an implantable prosthesis to a catheter assembly, the prosthesis retaining assembly comprising:
- a first member including,
- a central longitudinal axis,
- a first member retaining slot configured to retain a portion of the prosthesis, the first member retaining slot being configured to retain a portion of the prosthesis such that when the portion of the prosthesis is retained within the first member retaining slot longitudinal movement of the prosthesis relative to the first member is prevented, the first member retaining slot having an inner opening intersecting an inner surface of the first member and an outer opening intersecting with an outer surface of the first member;
- and
- a second member positioned within the first member, the second member being rotatable relative to the first member between
- a first position at which a portion of the second member is positioned adjacent to and obstructs a portion of the inner opening of the retaining slot preventing the portion of the prosthesis retained within the retaining slot from exiting the inner opening of the retaining slot in a radially inward direction towards the central longitudinal axis, and
- a second position at which the portion of the second member is rotated relative to the retaining slot such that the portion of the prosthesis can pass through the inner opening of the retaining slot in a radially outward direction away from the central longitudinal axis
- wherein the second member includes
- a central lumen, and
- a second member retaining slot, wherein the second member retaining slot includes an inner opening intersecting an inner surface of the second member and an outer opening intersecting with an outer surface of the second member.
A prosthesis retaining assembly for securing an implantable prosthesis to a catheter assembly, the prosthesis retaining assembly comprising:
- a first member including,
- a central longitudinal axis,
- a first member retaining slot configured to retain a portion of the prosthesis, the first member retaining slot being configured to retain a portion of the prosthesis such that when the portion of the prosthesis is retained within the first member retaining slot longitudinal movement of the prosthesis relative to the first member is prevented, the first member retaining slot having an inner opening intersecting an inner surface of the first member and an outer opening intersecting with an outer surface of the first member;
- and
- a second member positioned within the first member, the second member being rotatable relative to the first member between
- a first position at which a portion of the second member is positioned adjacent to and obstructs a portion of the inner opening of the retaining slot preventing the portion of the prosthesis retained within the retaining slot from exiting the inner opening of the retaining slot in a radially inward direction towards the central longitudinal axis, and
- a second position at which the portion of the second member is rotated relative to the retaining slot such that the portion of the prosthesis can pass through the inner opening of the retaining slot in a radially outward direction away from the central longitudinal axis;
- and
- a biasing member biasing the second member to the first position.
A method of coupling a prosthesis to a catheter assembly, the catheter assembly including a valve retainer disposed at a distal portion of the catheter assembly, the valve retainer comprising a first member defining a first member retaining slot, the first member retaining slot having an inner opening intersecting with an inner surface of the first member and an outer opening intersecting with an outer surface of the first member, and a second member disposed within first member, the second member having a central lumen, the method comprising:
- inserting a portion of the prosthesis into the central lumen;
- aligning the portion of the prosthesis with an inner opening of a second member retaining slot;
- inserting the portion of the prosthesis into the second member retaining slot through the inner opening of the second member retaining slot, wherein the second member is in a first position such that the second member retaining slot is not aligned with the first member retaining slot;
- and
- rotating the second member relative to the first member to a first position such that an outer opening of the second member retaining slot is aligned with the inner opening of the first member retaining slot such that the portion of the prosthesis expands through the outer opening of the second member retaining slot, through the inner opening of the first member retaining slot, and into the first member retaining slot.
A method of coupling a prosthesis to a catheter assembly and deploying the prosthesis at a target site, the catheter assembly including a valve retainer disposed at a distal portion of the catheter assembly, the valve retainer comprising a first member defining a first member retaining slot, the first member retaining slot having an inner opening intersecting with an inner surface of the first member and an outer opening intersecting with an outer surface of the first member, and a second member disposed within first member, the second member having a central lumen, the method comprising:
- covering the outer opening of the first member retaining slot with an outer tube;
- aligning the portion of the prosthesis with an inner opening of a second member retaining slot;
- inserting the portion of the prosthesis into the second member retaining slot through the inner opening of the second member retaining slot, wherein the second member is in a first position such that the second member retaining slot is not aligned with the first member retaining slot;
- rotating the second member relative to the first member to a first position such that an outer opening of the second member retaining slot is aligned with the inner opening of the first member retaining slot such that the portion of the prosthesis expands through the outer opening of the second member retaining slot, through the inner opening of the first member retaining slot, and into the first member retaining slot;
- after the portion of the prosthesis is disposed in the first member retaining slot, rotating the second member relative to the first member to a second position such that the second member retaining slot is not aligned with the first member retaining slot such that the second member blocks the inner opening of the first member retaining slot;
- advancing the outer tube distally and radially compressing the prosthesis such that the prosthesis is disposed within the outer tube in a radially compressed configuration;
- delivering the catheter assembly to a target site within the vasculature of a patient;
- and
- deploying the prosthesis from the catheter assembly.
Dependencies are inferred from the claim text.