Method and apparatus for compressing/loading stent-valves
Inventors
Essinger, Jacques • Delaloye, Stephane • Hefti, Jean-Luc • Mantanus, Luc • Paris, Michael
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-11771544-B2
Publication Date
2023-10-03
Expiration Date
Abstract
Apparatus (40) for compressing a transcatheter cardiac stent-valve (10) comprises: a hollow channel (42) having an interior surface (50) shaped for progressively compressing the stent-valve in response to longitudinal advancement of the stent-valve within the channel; a driver (46) threadedly engaged on the exterior of the channel for generating a longitudinal driving force in response to rotation; a mover (44) having limbs (56) that project through slots (58) in the channel wall to transmit the driving force to the stent-valve within the channel; and a channel extension (48) removably attachable at the exit (54) to provide a generally cylindrical containment bore (66).
Core Innovation
The invention relates to an apparatus for delivering a stent-valve comprising a stent component and a valve component to an implantation site within the body. A delivery catheter has at least one translatable sheath at a containment region for receiving the stent-valve in a compressed form as a result of a loading operation that compresses and loads the stent-valve with respect to the delivery catheter.
The apparatus includes packaging that contains the delivery catheter prior to use, where the packaging includes a base supporting the delivery catheter in a storage position. The base has a liquid tight trough, the trough having a depth suitable for use to hold liquid within which the containment region of the catheter may be immersed during the loading operation.
An apparatus for compressing the stent-valve during the loading operation is provided that is separate from the delivery catheter, and that apparatus for compressing is stored within the packaging prior to use. In examples described, the compressing apparatus includes a hollow channel with an interior surface shaped to progressively compress the stent-valve as it advances longitudinally within the hollow channel.
The stent component has an attachment portion for forming an interference fit with a complementary portion of a stent holder of the delivery catheter, the attachment portion being at or adjacent to at least one extreme end of the stent component. Example stent-valve structures are described as including a valve component that uses porcine and/or bovine pericardium, including inner skirt and outer skirt features, and a channel extension/loading tube may provide a cylindrical containment bore to reinforce the sheath during loading and to enable observation at the channel exit.
Claims Coverage
The independent claim content and referenced dependent refinements define seven inventive features spanning delivery catheter containment/loading, packaging with a liquid-tight trough, a separate packaged compression apparatus, progressive compression in a hollow channel, and an interference-fit attachment portion at an extreme end of the stent component, with an additional valve material refinement.
Translatable sheath receiving stent-valve in compressed form
A delivery catheter for delivering the stent-valve to an implantation site within the body, the delivery catheter having at least one translatable sheath at a containment region for receiving the stent-valve in a compressed form as a result of a loading operation for compressing and loading the stent-valve with respect to the delivery catheter.
Packaging with liquid-tight trough for immersing containment region during loading
Packaging containing the delivery catheter prior to use, the packaging including a base supporting the delivery catheter in a storage position, the base having a liquid tight trough, the trough having a depth suitable for use to hold liquid within which the containment region of the catheter may be immersed during the loading operation.
Separate compressing apparatus stored within packaging prior to use
An apparatus for compressing the stent-valve during the loading operation, wherein the apparatus for compressing is separate from the delivery catheter and the apparatus for compressing is stored within the packaging prior to use.
Stent component attachment portion forming an interference fit at an extreme end
The stent component comprises an attachment portion for forming an interference fit with a complementary portion of a stent holder of the delivery catheter, wherein the attachment portion is at or adjacent to at least one extreme end of the stent component.
Progressively compressing hollow channel responsive to longitudinal advancement
The apparatus for compressing comprises a hollow channel with an interior surface shaped for progressively compressing a stent in response to longitudinal advancement of the stent within the hollow channel.
Valve component formed from porcine and/or bovine pericardium
The valve component comprises porcine pericardium and/or bovine pericardium.
Interference fit characterized as an interlocking fit
The interference fit is an interlocking fit.
Overall, the claim coverage centers on a delivery catheter with a translatable sheath and a loading operation performed with the catheter contained in packaging having a liquid-tight trough, together with a separate compressing apparatus stored in the packaging. The stent component includes an attachment portion at or adjacent an extreme end for an interference fit with a stent holder, and the refinements further specify progressive compression in a hollow channel and an interlocking interference fit.
Stated Advantages
Documented Applications
No documented applications found
Interested in licensing this patent?