Tool for implantation of replacement heart valve
An implant holder for removably retaining an implant during an implantation procedure includes a holder device having a frame defining a chamber. The frame may be configured for removable retention of an implant, such as the flexible bioprosthetic heart valve, substantially within the chamber. The removable retention of the implant to the implant holder maintains the implant in an orientation and shape suitable for implantation.
1. An implant holder for removably retaining an implant during an implantation procedure, said implant holder comprising:
a monolithic body defining an axis, said monolithic body having:
(a) a hub; and
(b) a plurality of circumaxially spaced support struts together defining a chamber, each of said support struts being connected to said hub by one or more bridge members, said support struts each including an annulus support portion, a first commisure support portion and a second commisure support portion, said commisure support portions extending between and connecting said annulus support portion and said bridge member, with said annulus support members of said plurality of said support struts together substantially defining a first circumference about and substantially perpendicular to said axis, and wherein circumaxially adjacent ones of said support struts define gaps between adjacent commisure support portions thereof, said gaps being substantially equally circumaxially spaced about said axis; and
wherein said first and second commisure support portions of each support strut are circumaxially spaced from one another, and further wherein said first and second commisure support portions of each support strut are circumaxially spaced from said first and second commisure support portions of remaining ones of said support struts;
and further wherein a circumaxial spacing between said first and second commisure support portions of each support strut is greater than a circumaxial spacing between circumaxially adjacent ones of said annulus support portions.
2. The implant holder of claim 1 , wherein said commisure support portions are substantially perpendicular to said annulus support portion.
3. The implant holder of claim 1 , wherein said annulus support portion forms an arcuate segment of said first circumference.
4. The implant holder of claim 1 , wherein said one or more bridge members extend radially outwardly from said hub.
5. The implant holder of claim 1 , wherein said gaps are circumaxially spaced by about 120° about said axis.
6. The implant holder as in claim 1 wherein said gaps are configured to receive a commisure of a replacement bioprosthetic heart valve therein.
7. An implant holder as in claim 1 wherein said first circumference is specifically sized to be substantially equal to a circumferential dimension of an annulus of a replacement bioprosthetic heart valve.
8. An implant holder as in claim 7 wherein said gaps have a width dimension between adjacent commisure support portions, said width dimension being about 4 mm.
9. An implant holder as in claim 1 , wherein said first and second commisure support portions of each support strut are circumaxially spaced from one another, and further wherein said first and second commisure support portions of each support strut are circumaxially spaced from the first and second commisure support portions of the other support struts.