Transcatheter valve recapture devices and methods
AssigneeMedtronic Vascular, Inc.
InventorsErik Griswold, David Grossman, Radhika Bhargav, Victoria Tien, Priya Nair
Life of this patent
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Abstract
Delivery catheters for delivery of prosthetic heart valves are provided. The delivery catheters include brim recapture funnels configured for recapture of prosthetic heart valves. The brim recapture funnels are configured to recapture valve brims of partially deployed prosthetic heart valves to reduce or minimize damage to patient anatomy during a valve withdrawal procedure.
Claims17
A catheter for deploying a self-expanding prosthetic heart valve, comprising:
- an outer steerable catheter;
- an inner steerable catheter disposed within the outer steerable catheter;
- an inner compression shaft disposed within the inner steerable catheter;
- a distal sheath capsule configured to radially contain the self-expanding prosthetic heart valve and connected to the inner compression shaft, wherein the distal sheath capsule is configured to move distally to expose the self-expanding prosthetic heart valve;
- and
- a brim recapture funnel configured to recapture a valve brim of the self-expanding prosthetic heart valve.
A method of recapturing a self-expanding prosthetic heart valve with a delivery catheter, the method comprising:
- retracting the self-expanding prosthetic heart valve into a distal sheath capsule of the delivery catheter such that a valve brim of the self-expanding prosthetic heart valve protrudes from the distal sheath capsule;
- withdrawing the valve brim into a recapture field of a brim recapture funnel of the delivery catheter;
- collapsing the brim recapture funnel over the valve brim to capture the valve brim;
- and
- withdrawing the delivery catheter and the self-expanding prosthetic heart valve from patient anatomy;
- wherein collapsing the brim recapture funnel is performed by withdrawing the brim recapture funnel, attached to an inner steerable catheter of the delivery catheter, into an outer steerable catheter of the delivery catheter.
A method of recapturing a self-expanding prosthetic heart valve with a delivery catheter, the method comprising:
- retracting the self-expanding prosthetic heart valve into a distal sheath capsule of the delivery catheter such that a valve brim of the self-expanding prosthetic heart valve protrudes from the distal sheath capsule;
- withdrawing the valve brim into a recapture field of a brim recapture funnel of the delivery catheter;
- collapsing the brim recapture funnel over the valve brim to capture the valve brim;
- and withdrawing the delivery catheter and the self-expanding prosthetic heart valve from patient anatomy;
- wherein collapsing the brim recapture funnel is performed by withdrawing the brim recapture funnel, attached to an outer steerable catheter of the delivery catheter, into an introducer sheath.
A method of recapturing a self-expanding prosthetic heart valve with a delivery catheter, the method comprising:
- retracting the self-expanding prosthetic heart valve into a distal sheath capsule of the delivery catheter such that a valve brim of the self-expanding prosthetic heart valve protrudes from the distal sheath capsule;
- withdrawing the valve brim into contact with a brim recapture funnel of the delivery catheter;
- inverting the valve brim over the distal sheath capsule through force provided by the brim recapture funnel;
- capturing the valve brim by advancing the brim recapture funnel relative to the valve brim;
- collapsing the brim recapture funnel over the valve brim to capture the valve brim;
- and
- withdrawing the delivery catheter and the self-expanding prosthetic heart valve from patient anatomy.
Dependencies are inferred from the claim text.