Device for the in-situ delivery of heart valve prosthesis
Inventors
Giordano, Giovanni • Achiluzzi, Monica Francesca
Assignees
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Publication Number
US-12318289-B2
Publication Date
2025-06-03
Expiration Date
Abstract
Disclosed herein is a deployment instrument including: a shaft (2) having a longitudinal axis (X1); a handle (3) at a first end of the shaft (2); and a carrier portion (4) at a second end of the shaft (2). The carrier portion (4) is configured for holding an expandable heart valve prosthesis in a radially collapsed condition for delivery to the implantation site. The carrier portion (4) includes a hub (5) fixed to the handle (3) via the shaft (2), a first deployment element (6) and a second deployment element (7), each of said first deployment element (6) and second deployment element (7) configured to hold a corresponding portion of an expandable heart valve N prosthesis in a radially collapsed condition. A drive member (8) is provided which is configured to operate the first deployment element (6) and the second deployment element (7) in first and second opposite directions. The instrument is also provided with a mechanism to allow a displacement of the second deployment element in the second direction independently of the drive member (11).
Core Innovation
A deployment instrument for expandable heart valve prostheses is provided with a shaft having a longitudinal axis, a handle at a first end of the shaft, and a carrier portion at a second end of the shaft. The carrier portion is configured to hold an expandable heart valve prosthesis in a radially collapsed condition for delivery to the implantation site, and includes a hub fixed to the handle via the shaft, a first deployment element, and a second deployment element, each configured to hold a corresponding portion of the expandable heart valve prosthesis in the radially collapsed condition.
The handle comprises a drive member including a first drive feature and a second drive feature. The first deployment element is connected to a first axially movable element engaging the first drive feature, while the second deployment element is connected to a second axially movable element engaging the second drive feature. Operation of the drive member is configured to simultaneously actuate the first drive feature to axially displace the first deployment element in a first direction and the second drive feature to axially displace the second deployment element in a second direction, with the first and second directions being opposite to one another.
The second axially movable element includes a first portion engaging the second drive feature, and a second portion axially movable relative to the first portion to provide an axial displacement of the second deployment element in the second direction independently of the drive member. Structural embodiments further specify drive feature engagement through threaded portions or a rotary drive member comprising a knob and a stem, and include a hollow stem with drive features provided on different surfaces.
Claims Coverage
The independent claims identified in the partial content are clm-00001, clm-00011, clm-00012, and clm-00017. Across these claims, the coverage centers on a shaft/handle/carrier deployment instrument that simultaneously axially displaces two deployment elements in opposite directions while enabling independent additional axial displacement of the second deployment element via a multi-portion axially movable element.
Simultaneous opposite-direction axial displacement of first and second deployment elements
The handle comprises a drive member including a first drive feature and a second drive feature, wherein operation of the drive member is configured to simultaneously actuate both the first drive feature to axially displace the first deployment element in a first direction and the second drive feature to axially displace the second deployment element in a second direction, said first direction and said second direction being opposite to one another.
Independent axial displacement of the second deployment element via multi-portion second axially movable element
The second axially movable element includes a first portion engaging the second drive feature, and the second portion being axially movable relative to the first portion to provide an axial displacement of the second deployment element in the second direction independently of the drive member.
Threaded drive features on the first and second drive features
The first drive feature comprises a first threaded portion and said second drive feature comprises a second threaded portion.
Rotary knob-and-stem drive with drive features on different stem surfaces
The drive member is a rotary drive member comprising a knob and a stem, the first drive feature being provided on a first surface of the stem, and the second drive feature being provided on a second surface of the stem; wherein said stem is a hollow member, said first drive feature being provided on an inner surface of the stem, and said second drive feature being provided on an outer surface of the stem.
Guided axially movable geometry using diametrically opposite axial extensions
The first portion includes an annular portion wherefrom a first pair of diametrically opposite axial extensions protrude and an internal thread provided on the cylindrical inner surfaces of the axial extensions of the first pair and the annular member, the internal thread being configured to engage the second drive feature, wherein the axial extensions merge at a flange wherefrom a second pair of diametrically opposite axial extensions departs axially away from the first pair of axial extensions.
Coupling through an axially movable member with a first portion engaging and a second portion movable relative to it
A second deployment element is coupled to a second drive feature via an axially movable member with a first portion that engages the second drive feature and a second portion that can independently move axially relative to the first portion.
Across clm-00001, clm-00011, clm-00012, and clm-00017, the claims converge on a deployment instrument that simultaneously drives two deployment elements in opposite axial directions using first and second drive features, while the second deployment element receives independent axial displacement via a second axially movable element having first and second portions.
Stated Advantages
Documented Applications
No documented applications found
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