Heart valve delivery catheter with safety button

摘要

Valve delivery catheter assemblies including components that limit trauma to the expanded prosthetic valve and body channels as the distal tip of the catheter is withdrawn through the expanded valve and thereafter from the body. Catheter assemblies according to the present invention can include a handle assembly, an introducer sheath, and a distal tip assembly. The handle assembly can include a fixed main handle and two or more rotating handles that allow a user to control the distal tip assembly of the catheter. A safety button can be included on the handle assembly to allow for precise and consistent positioning of the prosthetic valve in the body. A valve retaining mechanism can be included to assist in retaining the prosthetic valve prior to deployment.

主权项

1. A catheter assembly for delivering an expandable prosthesis, the catheter having a proximal end and a distal end, the catheter comprising:
a handle assembly on the proximal end of the catheter, the handle assembly including a rotatable distal control knob and a rotatable proximal control knob; a distal tip assembly including a first sleeve and a second sleeve; a first elongate member extending from the handle assembly, wherein the first elongate member has a proximal end and a distal end and the first sleeve is connected to the distal end of the first elongate member; and a safety button on the handle assembly; wherein the rotatable distal control knob is movably connected to the first elongate member, wherein the catheter is configured so that rotation of the rotatable distal control knob advances the first sleeve in a distal direction, wherein the safety button is configured to lock the rotatable distal control knob in place after the first sleeve has been advanced, wherein the safety button is configured to be radially moveable from a first position to a second position, and wherein the safety button is configured to prevent rotation of the distal control knob when the safety button is in the second position.