Delivery system with inline sheath

• US 9,788,943 B2
• Filed: 06/11/2013
• Issued: 10/17/2017
• Est. Priority Date: 06/11/2013
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Deshmukh, Susheel R, Dwork, Joshua J., Griffin, Patrick, Macaulay, Patrick E., Masud, A K M, Shipley, Adam J., Shanahan, John P., Young, Hubert K., Peter, Stephen J., Belt, Gustaf L P
• Primary Examiner(s): Aleman, Sarah W
• Assistant Examiner(s): Highland, Rachel S
• Application Number:
  US13/914,802
• Publication Number:
  US 20140364939A1
• Time in Patent Office: 1,589 Days
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/48 Operating or control means, e.g. from outside the body, control of sphincters
• CPC Class Codes: A61M 2025/0024 Expandable catheters or sheaths
• CPC Class Codes: A61M 25/005 with embedded materials for reinforcement, e.g. wires, coils, braids
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires
• CPC Class Codes: A61M 25/0662 Guide tubes

Abstract

Systems and methods for delivering and implanting heart valves are disclosed. The delivery systems can include an integrated introducer. The integrated introducer can include a sheath having an inner diameter that is smaller than the outer diameter of a delivery capsule of the delivery system and an outer diameter that is approximately equal to the outer diameter of the delivery capsule. The integrated introducer can include a hub having a hemostatic seal. The hub can have a locking mechanism configured to fix the integrated introducer in place on the delivery system.

Claims

1. A delivery system for a medical device comprising:

a handle;

a delivery capsule configured to hold the medical device in a compressed delivery state comprising an outer diameter, a proximal end, and a distal end;

an inner lumen connecting the handle and the delivery capsule; and

an integrated introducer slidably disposed about the inner lumen, the integrated introducer comprising;

a sheath comprising a proximal end, a distal end, an inner diameter, and an outer diameter; and

a hub located at the proximal end of the sheath,

wherein the inner diameter of the sheath is smaller than the outer diameter of the delivery capsule, and

wherein the distal end of the sheath is rigid and cannot slide over any portion of the delivery capsule.

2. The delivery system of claim 1, wherein the outer diameter of the sheath is approximately equal to the outer diameter of the delivery capsule.

3. The delivery system of claim 1, wherein the distal end of the sheath further comprises a rigid ring configured to mate with the proximal end of the delivery capsule.

4. The delivery system of claim 3, wherein the ring is made of a radiopaque material.

5. The delivery system of claim 1, wherein the proximal end of the delivery capsule contacts the distal end of the sheath in an insertion configuration.

6. The delivery system of claim 5, wherein the delivery capsule is located distally from the distal end of the sheath in a delivery configuration.

7. The delivery system of claim 1, wherein the integrated introducer is configured to be disconnected from the handle.

8. The delivery system of claim 1, wherein the sheath comprises a flexible distal portion and a rigid proximal portion.

9. The delivery system of claim 1, further comprising a tubular stability member located between the inner lumen and the sheath.

10. The delivery system of claim 9, wherein the integrated introducer is slidable along and around the stability member.

11. The delivery system of claim 1, wherein a distal portion of the sheath is expandable.

12. The delivery system of claim 1, further comprising a plurality of wires running along an axis of the integrated introducer, wherein the wires are connected to a steering element located in the handle.

13. The delivery system of claim 1, wherein the hub further comprises:

an exterior surface;

an interior space; and

a hemostatic valve located within the interior space.

14. The delivery system of claim 13, wherein the inner lumen extends through the interior space of the hub, and

wherein the hub further comprises a one-way flush valve connected to the inner lumen.

15. The delivery system of claim 13, wherein the hemostatic valve fits against a retention element.

16. The delivery system of claim 13, wherein the hub further comprises a suture hole through the exterior surface of the hub.

17. The delivery system of claim 1, wherein the hub further comprises a locking element configured to lock the integrated introducer at a location along the inner lumen.

18. An integrated introducer for a medical device delivery system comprising:

a sheath comprising a proximal end, a distal end, an inner diameter, and an outer diameter; and

a hub located at the proximal end of the sheath comprising;

an exterior surface;

an interior space; and

a hemostatic valve located within the interior space,

wherein an inner diameter of the sheath is smaller than an outer diameter of a delivery capsule of the delivery system, and

wherein the distal end of the sheath is rigid and cannot slide over any portion of the delivery capsule.

19. The integrated introducer of claim 18, wherein the outer diameter of the sheath is approximately equal to the outer diameter of the delivery capsule.

20. A method of delivering a medical device comprising:

providing a delivery system for delivering the medical device, the delivery system comprising;

a handle;

a delivery capsule comprising an outer diameter, a proximal end, and a distal end, the delivery capsule being configured to hold the medical device in a compressed delivery state;

an inner lumen connecting the handle and the delivery capsule; and

an integrated introducer slidably disposed about the inner lumen, the integrated introducer comprising;

a sheath comprising a proximal end, a distal end, an inner diameter, and an outer diameter; and

a hub located at the proximal end of the sheath,

wherein the inner diameter of the sheath is smaller than the outer diameter of the delivery capsule,

wherein the distal end of the sheath is rigid and cannot slide over any portion of the delivery capsule, and

wherein the proximal end of the delivery capsule contacts the distal end of the sheath in an insertion configuration;

inserting the delivery system into a body lumen;

advancing the delivery capsule distally such that it breaks contact with the sheath;

maneuvering the delivery capsule to a deployment location; and

deploying the medical device at the deployment location.

21. The method of claim 20, further comprising disconnecting the integrated introducer from the handle.

22. The method of claim 20, wherein the hub further comprises a locking element and the method further comprises sliding the integrated introducer along the inner lumen and locking the integrated introducer in place by activating the locking element.