Devices, systems and methods for accurate positioning of a prosthetic valve
First Claim
1. A catheter for delivering a prosthetic valve to a position within a patient, comprising:
- a catheter proximal portion ending in a catheter proximal end;
a catheter distal portion ending in a catheter distal end, the catheter distal portion having an implant holding section configured to receive a prosthetic valve thereon;
a prosthetic valve positioned at the implant holding section, the prosthetic heart valve comprising a valve portion and a support portion, wherein the support portion is configured to support the valve portion and secure the valve portion in or adjacent a native valve annulus, wherein the support portion is the only structure configured to secure the valve portion in or adjacent the native valve annulus;
a catheter length from the catheter proximal end to the catheter distal end, wherein the catheter length is sufficient to reach from a position outside of a patient'"'"'s body to a position at a native valve annulus within the patient'"'"'s body; and
at least one extendable positioner configured to be selectively and radially extended from a first position to a second position, wherein in the first position the extendable positioner is positioned generally parallel to and against the catheter distal portion with the extendable positioner extending at least partially over the implant holding section, wherein in the second position at least a portion of the extendable positioner extends radially away from the catheter distal portion, wherein in the second position a portion of the extendable positioner extends longitudinally over but radially displaced away from and outside of the valve portion and the support portion of the prosthetic heart valve;
wherein the prosthetic heart valve is configured to be radially expanded and released from the catheter, and the extendable positioner is configured so that after the prosthetic heart valve is released from the catheter and deployed in the native valve annulus, the entirety of the extendable positioner remains secured to the catheter and is configured to be withdrawn in its entirety from the body with the catheter.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention is a system and method for accurately positioning a prosthetic valve such as a prosthetic heart valve at a desired position for deployment. The invention includes extendable positioning elements which provide tactile feedback to a user to confirm proper positioning of the catheter with respect to the native valve annulus. During delivery, the extendable positioning elements lie against the catheter, over the prosthetic valve and expandable balloon, providing a low profile for advancing the catheter to the desired treatment location via small passages such as body lumens. Prior to valve deployment, the positioning elements are extended and brought into contact with tissue of the native annulus to confirm the proper positioning of the delivery system and prosthetic valve.
187 Citations
26 Claims
-
1. A catheter for delivering a prosthetic valve to a position within a patient, comprising:
-
a catheter proximal portion ending in a catheter proximal end; a catheter distal portion ending in a catheter distal end, the catheter distal portion having an implant holding section configured to receive a prosthetic valve thereon; a prosthetic valve positioned at the implant holding section, the prosthetic heart valve comprising a valve portion and a support portion, wherein the support portion is configured to support the valve portion and secure the valve portion in or adjacent a native valve annulus, wherein the support portion is the only structure configured to secure the valve portion in or adjacent the native valve annulus; a catheter length from the catheter proximal end to the catheter distal end, wherein the catheter length is sufficient to reach from a position outside of a patient'"'"'s body to a position at a native valve annulus within the patient'"'"'s body; and at least one extendable positioner configured to be selectively and radially extended from a first position to a second position, wherein in the first position the extendable positioner is positioned generally parallel to and against the catheter distal portion with the extendable positioner extending at least partially over the implant holding section, wherein in the second position at least a portion of the extendable positioner extends radially away from the catheter distal portion, wherein in the second position a portion of the extendable positioner extends longitudinally over but radially displaced away from and outside of the valve portion and the support portion of the prosthetic heart valve; wherein the prosthetic heart valve is configured to be radially expanded and released from the catheter, and the extendable positioner is configured so that after the prosthetic heart valve is released from the catheter and deployed in the native valve annulus, the entirety of the extendable positioner remains secured to the catheter and is configured to be withdrawn in its entirety from the body with the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A system for replacing a deficient heart valve, comprising:
-
a prosthetic heart valve comprising a radially expandable support stent and one or more valve leaflets, wherein the prosthetic heart valve is configured to be radially expanded from a delivery diameter to a deployed diameter; and a catheter comprising a catheter proximal portion ending in a catheter proximal end, the catheter further comprising a catheter distal portion ending in a catheter distal end, the catheter having an overall length extending from catheter proximal end to the catheter distal end, wherein the prosthetic heart valve is positioned on the catheter distal portion, the catheter further comprising a plurality of retractable members positioned on the catheter distal portion, each retractable member comprising a member fixed end secured to the catheter distal portion at a position adjacent the prosthetic heart valve, each retractable member further comprising a retractable member free end positioned at a distance longitudinally displaced with respect to the catheter distal portion such that the retractable member extends at least partially over the prosthetic heart valve, wherein each retractable member has a first position wherein the retractable member free end is positioned radially adjacent the catheter distal portion and the retractable member is generally lengthwise and parallel to the catheter distal portion, and wherein each retractable member has a second position wherein the retractable member free end is radially displaced away from the catheter distal portion such that the retractable member is generally non-parallel with the catheter distal portion, and wherein in the second position the retractable member free end is not secured to or contacting any structure other than the retractable member itself, wherein in the second position a portion of the retractable member extends longitudinally over but radially displaced away from and outwardly of the prosthetic heart valve; wherein the prosthetic heart valve is configured to be radially expanded and released from the catheter, and the retractable member is adapted such that after the prosthetic heart valve is released from the catheter the entirety of the retractable member including the retractable member free end and the portion which extends longitudinally over but radially displaced away from the prosthetic heart valve in the second position, remains secured to the catheter and is adapted to be withdrawn with the catheter from the body and away from the released prosthetic heart valve without disrupting the deployed prosthetic heart valve. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A device for delivering a prosthetic valve to a position within a patient, comprising:
-
a device proximal portion ending in a device proximal end, the device proximal portion comprising a device handle; a device distal portion ending in a device distal end, the device distal portion having an implant holding section configured to receive a medical implant thereon; a prosthetic valve releasably positioned on the implant holding section, the prosthetic valve comprising a valve portion and a support portion; a device usable length from a distal end of the device handle to the device distal end, wherein the device usable length is sufficient to reach from a position outside of a patient'"'"'s body to a position within a native valve annulus within the patient'"'"'s body; and at least one extendable positioner configured to be selectively and radially extended from a first position to a second position, wherein in the first position the extendable positioner is positioned generally parallel to and against the device distal portion and longitudinally over at least a portion of the prosthetic valve and implant holding section, wherein in the second position at least a portion of the extendable positioner extends radially away from the device distal portion and radially away from and outside of the prosthetic valve and outside of all other structures at or secured to the distal portion of the device while extending longitudinally over at least a portion of the prosthetic valve, wherein the entirety of the retractable member is configured to remain secured to the device distal portion and to be withdrawn from the body and away from the prosthetic heart valve with the device distal portion after release and deployment of the prosthetic valve within the native valve annulus within the patient'"'"'s body. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
Specification