Transcatheter prosthetic heart valve delivery device with partial deployment and release features and methods
First Claim
1. A delivery device for percutaneously deploying a stented prosthetic heart valve including a stent frame to which a valve structure is attached, the device comprising:
- a delivery sheath assembly terminating at a distal end and defining a lumen;
an inner shaft slidably disposed within the lumen; and
a spindle attached to the shaft, the spindle including;
a tubular base,a hub projecting radially outwardly relative to the base, wherein;
the hub defines at least one longitudinal slot sized to slidably receive a corresponding post of a prosthetic heart valve stent frame, wherein the at least one longitudinal slot is defined by opposing side walls and a floor, and further wherein the tubular base includes a ring immediately proximal the hub, the ring having a surface aligned with the floor,an outer surface of the hub forms a proximal segment and a distal segment, the proximal segment being curved in extension toward the distal segment and defining a ramp-like face immediately adjacent the base, the distal segment defining a distal face, wherein the at least one longitudinal slot is open at the proximal and distal faces;
wherein the device is configured to provide a loaded state in which the delivery sheath assembly retains a stented prosthetic heart valve over the inner shaft and coupled to the spindle via the at least one slot, and a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the prosthetic heart valve to permit the prosthetic heart valve to release from the at least one longitudinal slot.
1 Assignment
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Accused Products
Abstract
A delivery device for percutaneously deploying a stented prosthetic heart valve, including a delivery sheath, an inner shaft, and a spindle. The inner shaft is slidably disposed within a lumen of the delivery sheath. The spindle is attached to the shaft and includes a hub defining at least one longitudinal slot sized to slidably receive a post of the stented valve. An outer surface of the hub forms a curved proximal segment. The device provides a loaded state in which the delivery sheath retains the stented valve over the inner shaft and coupled to the spindle via the slot. In a deployed state, the distal end of the delivery sheath is withdrawn from the prosthesis to permit the stented valve to release from the slot, sliding along the curved outer surface of the hub.
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Citations
30 Claims
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1. A delivery device for percutaneously deploying a stented prosthetic heart valve including a stent frame to which a valve structure is attached, the device comprising:
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a delivery sheath assembly terminating at a distal end and defining a lumen; an inner shaft slidably disposed within the lumen; and a spindle attached to the shaft, the spindle including; a tubular base, a hub projecting radially outwardly relative to the base, wherein; the hub defines at least one longitudinal slot sized to slidably receive a corresponding post of a prosthetic heart valve stent frame, wherein the at least one longitudinal slot is defined by opposing side walls and a floor, and further wherein the tubular base includes a ring immediately proximal the hub, the ring having a surface aligned with the floor, an outer surface of the hub forms a proximal segment and a distal segment, the proximal segment being curved in extension toward the distal segment and defining a ramp-like face immediately adjacent the base, the distal segment defining a distal face, wherein the at least one longitudinal slot is open at the proximal and distal faces; wherein the device is configured to provide a loaded state in which the delivery sheath assembly retains a stented prosthetic heart valve over the inner shaft and coupled to the spindle via the at least one slot, and a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the prosthetic heart valve to permit the prosthetic heart valve to release from the at least one longitudinal slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for repairing a defective heart valve of a patient, the system comprising:
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a prosthetic heart valve having a stent frame and a valve structure attached to the stent frame, the stent frame defining a distal region and a proximal region, the proximal region forming at least one post; and a delivery device comprising; a delivery sheath assembly terminating at a distal end and defining a lumen, an inner shaft slidably disposed within the lumen, a spindle attached to the inner shaft, the spindle including; a tubular base, a hub projecting radially outwardly relative to the base and defining at least one longitudinal slot sized to slidably receive the at least one post, wherein the outer surface of the hub forms a proximal segment and a distal segment, the proximal segment being curvilinear to define a convex curve in extension toward the distal segment and a ramp-like proximal face in extension toward the base, the distal segment defining a distal face, wherein the at least one longitudinal slot is open at the proximal and distal faces; wherein the system is configured to provide a loaded condition in which the prosthetic heart valve is retained between the delivery sheath assembly and the inner shaft, including the at least one post slidably captured within the at least one longitudinal slot. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of percutaneously deploying a stented prosthetic heart valve to an implantation site of a patient, the method comprising:
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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 loaded state of the device, and a spindle attached to the shaft, the spindle including; a tubular base, a hub projecting radially outwardly relative to the base and defining at least one longitudinal slot and an outer surface forming a proximal segment and a distal segment, the proximal segment being curved in extension toward the distal segment and defining a ramp-like proximal face immediately adjacent the base, the distal segment defining a distal face, wherein the at least one longitudinal slot is open at the proximal and distal faces, wherein a post of the stent frame is slidably captured within the at least one longitudinal slot in the loaded state; 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 loaded state; proximally retracting the delivery sheath assembly from the prosthetic heart valve; and permitting the post to release from the at least one longitudinal slot, including a surface of the post sliding along the curved proximal segment of the hub outer surface such that the prosthetic heart valve deploys from the delivery device. - View Dependent Claims (27, 28, 29, 30)
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Specification