Rapid exchange transcatheter valve delivery system

Patent metadata

Field	Value
Publication number	US-9877832-B2
Application number	US-201514830504-A
Country	US
Kind code	B2
Filing date	Aug 19, 2015
Priority date	Aug 22, 2014
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A delivery device for implanting a prosthetic heart valve. The device includes an inner shaft assembly, an outer sheath and a connector assembly. The inner shaft assembly defines a guide wire lumen. The outer sheath is slidably received over the inner shaft assembly, and forms an exit port proximate a distal end thereof. The connector assembly establishes a guide wire passageway between the guide wire lumen and the exit port. The connector assembly is configured to permit sliding movement of the outer sheath relative to the inner shaft assembly when deploying the prosthetic heart valve. The connector assembly can include first and second tubes that are slidable relative to one another in facilitating movement of the outer sheath relative to the inner shaft assembly.

First claim

What is claimed is:

1. A delivery device for implanting a stented prosthetic heart valve, the device comprising:
an inner shaft assembly including a shaft and a valve retainer, the inner shaft assembly defining a guide wire lumen that terminates at a proximal opening in a proximal face of the valve retainer;
an outer sheath slidably received over the inner shaft assembly, the outer sheath defining a distal end, a proximal end, and a guide wire exit port between the distal and proximal ends; and
a connector assembly establishing a guide wire passageway between the guide wire lumen and the guide wire exit port, the connector assembly including a first tube attached to and extending distally from the guide wire exit port of the outer sheath and a second tube attached to and extending proximally from the proximal face of the valve retainer, the first and second tubes combine to define at least a portion of the guide wire passageway;
wherein the connector assembly is configured to permit sliding movement of the outer sheath relative to the inner shaft assembly.

2. The delivery device of claim 1 , wherein the connector assembly is configured to transition from a first state to a second state with proximal movement of the outer sheath relative to the inner shaft assembly.

3. The delivery device of claim 2 , wherein the delivery device defines a central longitudinal axis, and further wherein a longitudinal length of the connector assembly relative to the central longitudinal axis in the first state differs from the longitudinal length of the connector assembly in the second state.

4. The delivery device of claim 3 , wherein the longitudinal length of the connector assembly in the first state is greater than the longitudinal length in the second state.

5. The delivery device of claim 3 , wherein the longitudinal length of the connector assembly in the first state is less than the longitudinal length in the second state.

6. The delivery device of claim 1 , wherein the connector assembly is configured to provide:
a first state at a first longitudinal distance between the proximal opening and the guide wire exit port; and
a second state at a second longitudinal distance between the proximal opening and the guide wire exit port.

7. The delivery device of claim 1 wherein the first tube is slidably connected to the second tube.

8. The delivery device of claim 7 , wherein the first and second tubes are configured to articulate relative to one another in a telescoping fashion with sliding movement of the outer sheath relative to the inner shaft assembly.

9. The delivery device of claim 8 , wherein the connector assembly is configured such that the first tube pivots relative to the outer sheath and the second tube pivots relative to the valve retainer with sliding movement of the outer sheath relative to the inner shaft assembly.

10. The delivery device of claim 1 , wherein the guide wire exit port is formed in a side wall of the outer sheath.

11. The delivery device of claim 1 , wherein the connector assembly includes a spring.

12. The delivery device of claim 1 , wherein the outer sheath includes a capsule configured to compressibly retain a stented prosthetic heart valve, and further wherein the guide wire exit port is formed proximate the capsule.

13. The delivery device of claim 12 , wherein the delivery device is configured to provide a delivery condition in which a stented prosthetic heart valve is compressed over a support segment of the inner shaft assembly and retained within the capsule.

14. The delivery device of claim 13 , wherein the delivery device is further configured to provide a deployment condition in which the capsule is proximally retracted from the support segment.

15. A delivery system for implanting a stented prosthetic heart valve, the system comprising:
a delivery device including:
an inner shaft assembly including a shaft and a valve retainer, the inner shaft assembly defining a guide wire lumen that terminates at a proximal opening in a proximal face of the valve retainer,
an outer sheath slidably received over the inner shaft assembly, the outer sheath defining a distal end, a proximal end, and a guide wire exit port between the distal and proximal ends,
a connector assembly establishing a guide wire passageway between the guide wire lumen and the guide wire exit port, the connector assembly including a first tube attached to and extending distally from the guide wire exit port of the outer sheath and a second tube attached to and extending proximally from the proximal face of the valve retainer, the first and second tubes combine to define at least a portion of the guide wire passageway,
wherein the connector assembly is configured to permit sliding movement of the outer sheath relative to the inner shaft assembly; and
a guide wire slidably received through the guide wire lumen, the guide wire passageway, and the guide wire exit port.

16. The delivery system of claim 15 , wherein the first tube is slidably connected to the second tube.

17. The delivery system of claim 15 , wherein the connector assembly is configured such that the first tube pivots relative to the outer sheath and the second tube pivots relative to the valve retainer with sliding movement of the outer sheath relative to the inner shaft assembly.

Assignees

• Medtronic Vascular Inc

Inventors

• Cunningham Kieran
• Anderson Marc
• Costello Declan
• Griffin Patrick

Classifications

• A61M25/01

  Introducing, guiding, advancing, emplacing or holding catheters (A61M25/10 takes precedence) · CPC title

• A61M2025/0183

  Rapid exchange or monorail catheters · CPC title

• A61F2002/9505

  having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument · CPC title

• A61F2/2436 Primary

  Deployment by retracting a sheath · CPC title

• A61F2/9522

  Means for mounting a stent or stent-graft onto or into a placement instrument · CPC title