Stent and securely-installed artificial valve replacement device having same
AssigneeVenus Medtech Changzhou, Inc.
InventorsRongjun Lei, Zhifei Zhang, Qiming Zhang
Life of this patent
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Abstract
A stent and a securely-installed artificial valve replacement device having the same, the stent being of a cylindrical structure; the top of the stent is provided with a fixed ear (60); the fixed ear (60) has a neck portion (601) connected to the top of the stent, and a head portion (602) engaged with the fixed head of the stent; the head portion (602) has a bending structure for improving the overall radial thickness; and the artificial valve replacement device is comprised of a stent and a prosthetic valve fixed on the stent. The stent with a bending structure overcomes the problem of easily disengaging from the fixed head of the stent, while not affecting the release of the stent.
Claims17
A tubular foldable stent, comprising, along a longitudinal direction:
- a first section;
- a second section;
- and
- a valve section connected between the first section and the second section, the valve section being configured for attaching a prosthesis valve therein;
- wherein the first section has at least one fixed ear provided at one end thereof spaced-apart from the valve section, and each fixed ear is T-shaped and comprises:
- a neck portion connected to the end of the first section;
- and
- a head portion;
- wherein within each fixed ear, the head portion has a width greater than a width of the neck portion in a circumferential direction of the stent;
- and
- wherein within each fixed ear, the head portion has at least a first curved portion and a second curved portion, with a bent portion connecting the first and second curved portions, and with the bent portion having a different curvature than the curvatures of the first and second curved portions.
A tubular foldable stent, comprising, along a longitudinal direction:
- a first section;
- a second section;
- and
- a valve section connected between the first section and the second section, the valve section being configured for attaching a prosthesis valve therein;
- wherein the first section has at least one fixed ear provided at one end thereof spaced-apart from the valve section, and each fixed ear is T-shaped and comprises:
- a neck portion connected to the end of the first section;
- and
- a head portion;
- wherein within each fixed ear, the head portion has a width greater than a width of the neck portion in a circumferential direction of the stent;
- and
- wherein within each fixed ear, the head portion is wave-shaped in the circumferential direction.
An artificial valve replacement device, comprising:
- a tubular foldable stent, comprising, along a longitudinal direction:
- a first section;
- a second section;
- and
- a valve section connected between the first section and the second section;
- wherein the first section has at least one fixed ear provided at one end thereof spaced-apart from the valve section, and each fixed ear is T-shaped and comprises:
- a neck portion connected to the end of the first section;
- and
- a head portion;
- wherein within each fixed ear, the head portion has a width greater than a width of the neck portion in a circumferential direction of the stent;
- wherein within each fixed ear, the head portion has at least a first curved portion and a second curved portion, with a bent portion connecting the first and second curved portions, and with the bent portion having a different curvature than the curvatures of the first and second curved portions;
- and
- a prosthesis valve fixed at the valve section of the stent.
Dependencies are inferred from the claim text.