Positioning Tool for Transcatheter Valve Delivery

• US 20140296970A1
• Filed: 03/19/2014
• Published: 10/02/2014
• Est. Priority Date: 04/02/2013
• Status: Abandoned Application

• Current Assignee: Tendyne Holdings Inc. (Abbott Laboratories Incorporated)
• Original Assignee: Tendyne Holdings Inc. (Abbott Laboratories Incorporated)
• Inventors: Vidlund, Robert M., Ekvall, Craig A.
• Application Number:
  US14/219,591
• Publication Number:
  US 20140296970A1
• Time in Patent Office: Days
• US Class Current: 623/2.11
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2250/0053 differing in optical properties
• CPC Class Codes: A61F 2250/0091 transparent or translucent
• CPC Class Codes: A61F 2250/0096 Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
• CPC Class Codes: A61F 2250/0097 Visible markings, e.g. indicia

Abstract

This invention relates to a positioning device for delivery of a transcatheter prosthetic heart valve that comprises a ratchet rod with reference scale for accurate positioning a valve during deployment, and methods of use thereof.

Claims

1. A positioning device for deploying a transcatheter prosthetic cardiovascular valve in a patient, which comprises a ratchet rod having a built-in collet at a distal end for attachment to the valve, a transparent sheath having a reference scale, the ratchet rod slidably disposed within the transparent sheath and said ratchet rod having one or more markings operatively associated with reference scale, a tensioning collar attached to the transparent sheath and positioned around the slidable ratchet rod, a tensioning-release lever on the tensioning collar to actuate a pawl mechanism within the tensioning collar, and a removable epicardial attachment pad attached to a proximal end of the ratchet rod.

2. The positioning device of claim 1, wherein the transparent sheath reference scale and ratchet rod markings provide a step resolution of between about 0.5 mm and about 2.0 mm.

3. The positioning device of claim 1, wherein the ratchet rod and pawl mechanism provide an audible feedback to a user.

4. The positioning device of claim 1, wherein the device has one or more radio-opaque markers thereon to facilitate positioning.

5. The positioning device of claim 1, where the device fits within a surgical catheter sheath having a diameter of between about 10 Fr (3.3 mm) to about 42 Fr (14 mm).

6. A method of tensioning a deployed transcatheter prosthetic cardiovascular valve in a patient, which comprises the step of pulling the ratchet rod to tighten a tether that extends from the valve that is surgically deployed into the mitral annulus of the patient and through an apical epicardial attachment point.