摘要:
A holder for a prosthetic mitral heart valve that attaches to an inflow end of the valve and includes a simple tensioning mechanism that flexes the heart valve commissure posts inward to help prevent suture looping. The tensioning mechanism may include relatively movable rings of the holder or a generally unitary holder with a tensor, or rotatable knob. Connecting sutures thread through internal passages in the holder and travel in the outflow direction along valve commissure posts, emerging at the post tips and mutually crossing over the outflow side of the valve. A handle attaches off-center on the holder to increase visualization of and access to the heart valve through a central window for enhanced access to the commissure posts and leaflets. The holder is constructed of non-metallic materials so as to avoid interfering with imaging devices, and the handle is ergonomically curved and shaped to facilitate manipulation.
摘要:
A holder for a prosthetic mitral heart valve that attaches to an inflow end of the valve and includes a simple tensioning mechanism that flexes the heart valve commissure posts inward to help prevent suture looping. The tensioning mechanism may include relatively movable rings of the holder or a generally unitary holder with a tensor, or rotatable knob. Connecting sutures thread through internal passages in the holder and travel in the outflow direction along valve commissure posts, emerging at the post tips and mutually crossing over the outflow side of the valve. A handle attaches off-center on the holder to increase visualization of and access to the heart valve through a central window for enhanced access to the commissure posts and leaflets. The holder is constructed of non-metallic materials so as to avoid interfering with imaging devices, and the handle is ergonomically curved and shaped to facilitate manipulation.
摘要:
Suture clip deployment devices for applying suture clips to sutures are described. Some embodiments can include a generally tubular main body and a vacuum port located at the distal end, a hollow inner body longitudinally slidable within the main body and extending from the main body at its distal end, and a suture recess located in the generally tubular main body. At least one suture clip configured to frictionally fit on an outer surface of the inner body is deployed during use. Clip deployment can occur after a vacuum source is applied to the device so as to draw the suture into the device. The suture lines can be retrieved through the suture recess, and the device can be actuated so as to deliver the suture clip off the delivery device and onto the suture, locking the suture in place.
摘要:
A valved conduit including a bioprosthetic aortic heart valve connected to a tubular conduit graft forming an ascending aorta. The conduit graft may attach to the heart valve in a manner that facilitates a redo operation in which the valve is replaced with another valve. A sewing ring may be pre-attached to the inflow end of the graft, and then the valve connected to a delivery holder advanced into the graft and secured to the sewing ring. Dry bioprosthetic valves coupled with conduit grafts sealed with a bioresorbable medium can be stored with the delivery holder.
摘要:
An improved holder and storage system for a tissue-type prosthetic mitral heart valve that constricts the commissure posts of the valve and prevents suture looping. A rod axially movable relative to the holder tensions lengths of attachment sutures that extend between the commissure post tips to create a tent and flex the tips inward, thus helping to prevent looping of any of an array of pre-implanted sutures around the leading tips during delivery of the valve. The holder has a safety mechanism that prevents valve delivery before the rod is deployed. One embodiment automatically deploys the rod upon opening a storage jar. One embodiment permits a delivery handle to directly deploy the rod, while another uses a separate worm screw and coupling. A holder clip that attaches to a packaging sleeve may be formed of flexible members meshed together from which the heart valve and holder are easily pulled free to eliminate a step of decoupling the clip from the sleeve.
摘要:
A valve holder for delivering a prosthetic heart valve to an implant site is in various embodiments configured to reduce or eliminate the occurrence of suture looping or other damage to the prosthetic valve during implantation. The valve holder can be configured to deploy or actuate automatically when performing preparatory steps that are already familiar to practitioners, such as attaching a delivery handle to the valve holder, so that the valve holders will not require additional steps or training to use. Therefore, operation of the valve holders is kept simple, and occurrences of mistakes caused by user error can be minimized or reduced. Valve holders according to different embodiments can be designed to accommodate implantation of prosthetic heart valves from either the inflow end or the outflow end of the native valve annulus.
摘要:
A valve holder for delivering a prosthetic heart valve to an implant site is in various embodiments configured to reduce or eliminate the occurrence of suture looping or other damage to the prosthetic valve during implantation. The valve holder can be configured to deploy or actuate automatically when performing preparatory steps that are already familiar to practitioners, such as attaching a delivery handle to the valve holder, so that the valve holders will not require additional steps or training to use. Therefore, operation of the valve holders is kept simple, and occurrences of mistakes caused by user error can be minimized or reduced. Valve holders according to different embodiments can be designed to accommodate implantation of prosthetic heart valves from either the inflow end or the outflow end of the native valve annulus.
摘要:
An improved holder and storage system for a tissue-type prosthetic mitral heart valve that constricts the commissure posts of the valve and prevents suture looping. A rod axially movable relative to the holder tensions lengths of attachment sutures that extend between the commissure post tips to create a tent and flex the tips inward, thus helping to prevent looping of any of an array of pre-implanted sutures around the leading tips during delivery of the valve. The holder has a safety mechanism that prevents valve delivery before the rod is deployed. One embodiment automatically deploys the rod upon opening a storage jar. One embodiment permits a delivery handle to directly deploy the rod, while another uses a separate worm screw and coupling. A holder clip that attaches to a packaging sleeve may be formed of flexible members meshed together from which the heart valve and holder are easily pulled free to eliminate a step of decoupling the clip from the sleeve.
摘要:
A multiple-fire securing device includes a hollow outer shaft, a reloader, a reloader movement assembly, a rail, and securing structures each defining an inner securing orifice. The reloader longitudinally moves within the outer shaft and has a distal end shaped to temporarily contact one of the securing structures. The rail is disposed within the reloader and has an installing location. The securing structures are disposed on the rail. The reloader movement assembly moves the reloader longitudinally in a distal direction to deliver a first securing structure to the installing location from a first proximal position and moves the reloader proximally away from the installing location without the first securing structure to a position in which the distal end of the reloader temporarily contacts a second one of the securing structures. The second and successive securing structures are moved one at a time to the installing location.
摘要:
A holder for a prosthetic mitral heart valve that attaches to an inflow end of the valve and includes a simple tensioning mechanism that flexes the heart valve commissure posts inward to help prevent suture looping. The tensioning mechanism may include relatively movable rings of the holder or a generally unitary holder with a tensor, or rotatable knob. Connecting sutures thread through internal passages in the holder and travel in the outflow direction along valve commissure posts, emerging at the post tips and mutually crossing over the outflow side of the valve. A handle attaches off-center on the holder to increase visualization of and access to the heart valve through a central window for enhanced access to the commissure posts and leaflets. The holder is constructed of non-metallic materials so as to avoid interfering with imaging devices, and the handle is ergonomically curved and shaped to facilitate manipulation.