TRANSCATHETER PROSTHETIC HEART VALVE DELIVERY DEVICE WITH BIASED RELEASE FEATURES

• US 20140371848A1
• Filed: 09/04/2014
• Published: 12/18/2014
• Est. Priority Date: 04/27/2010
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Murray, Robert III, Kolden, Jason, Argentine, Jeffery
• Granted Patent: US 9,687,344 B2
• Time in Patent Office: Days
• US Class Current: 623/2.11
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

A delivery system for percutaneously delivering and deploying a stented prosthetic heart valve. The delivery device includes a delivery sheath slidably disposed over an inner shaft, and a capture assembly. The capture assembly includes a spindle and a biasing member. The spindle is attached to the inner shaft and defines slot. The biasing member is disposed within the slot and self-transitions from a deflected condition to a normal condition. In a delivery state, the delivery sheath retains the prosthesis over the inner shaft and coupled to the spindle via the capture slot, including a portion of the prosthetic valve being engaged within the slot and the biasing member forced to the deflected condition. In a deployment state, the delivery sheath is proximally withdrawn and the biasing member self-transitions toward the normal condition to eject the prosthetic valve from the capture slot.

Claims

1-23. -23. (canceled)

24. :

A method of percutaneously deploying a stented prosthetic heart valve to an implantation site of a patient, the method comprising;

receiving a delivery device loaded with a radially expandable prosthetic heart valve having a stent frame to which a valve structure is attached, the delivery device including a delivery sheath assembly containing the prosthetic heart valve in a compressed arrangement over an inner shaft in a delivery state of the device, and a capture assembly attached to the inner shaft, the capture assembly including;

a spindle attached to the inner shaft and defining at least one longitudinal capture slot,

at least one biasing member disposed within the at least one capture slot and configured to self-transition from a deflected condition to a normal condition,

wherein a post of the stent frame is slidably disposed within the at least one capture slot in the delivery state in a manner forcing the at least one biasing member to the deflected condition;

delivering the prosthetic heart valve in the compressed arrangement through a bodily lumen of the patient and to the implantation site via the delivery device in the delivery state;

proximally retracting the delivery sheath assembly from the prosthetic heart valve; and

permitting the post to release from the at least one capture slot, including the at least one biasing member self-transitioning toward the normal condition to eject the post from the at least one capture slot.

25. :

The method of claim 25, wherein the at least one capture slot includes a plurality of circumferentially spaced capture slots, the at least one biasing member includes a plurality of biasing members, respective ones of which are disposed in corresponding ones of the capture slots, and the at least one post includes a plurality of posts corresponding with the plurality of capture slots.

26. :

The method of claim 25, wherein the delivery device further includes;

a release sleeve assembly disposed between the delivery sheath assembly and the inner shaft, the release sleeve assembly including a release sleeve slidably disposed over the spindle in the delivery state to retain the post in the at least one capture slot.

27. :

The method of claim 26, wherein the delivery state includes the release sleeve imparting a compressive force onto the at least one biasing member via the at least one post, and further wherein the step of permitting the post to release from the at least one capture slot includes proximally retracting the release sleeve from over the at least one capture slot.