Tip assemblies, systems, and methods for fracturing a frame of a deployed prosthesis

Patent metadata

Field	Value
Publication number	US-11540917-B2
Application number	US-201916401235-A
Country	US
Kind code	B2
Filing date	May 2, 2019
Priority date	May 3, 2018
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A system for fracturing a frame of a deployed prosthesis with ultrasonic vibration includes a shaft, a tip assembly, an ultrasonic electric generator, and an ultrasonic transducer. The shaft includes a proximal portion and a distal portion. The tip assembly is coupled to the distal portion of the shaft. The tip assembly includes a cutting edge. The ultrasonic transducer is electrically coupled to the ultrasonic generator. Ultrasonic vibration generated by the ultrasonic transducer is translated to the tip assembly. The cutting edge of the tip assembly is configured to focus the vibration of the tip assembly onto a frame of a deployed prosthesis to fracture the frame of the prosthesis. The ultrasonic transducer may be coupled to the proximal portion or the distal portion of the shaft.

First claim

What is claimed is:

1. A system for fracturing a frame of a prosthesis comprising:
a shaft having a proximal portion and a distal portion;
a tip assembly coupled to the distal portion of the shaft, the tip assembly including:
a first segment extending along a longitudinal axis;
a second segment extending from a distal end of the first segment and transverse to the first segment, the second segment including a cutting edge; and
a third segment extending distally from a second end of the second segment opposite a first end of second segment coupled to the first segment, the third segment extending transverse to the second segment such that the third segment is generally parallel to the longitudinal axis;

an ultrasonic electric generator; and
an ultrasonic transducer electrically coupled to the ultrasonic generator and configured to generate ultrasonic vibration,
wherein the ultrasonic vibration generated by the ultrasonic transducer is translated to the tip assembly.

2. The system of claim 1 , wherein the ultrasonic transducer is coupled to the proximal portion of the shaft, and wherein the shaft is configured to translate the ultrasonic vibration generated by the ultrasonic transducer to the tip assembly.

3. The system of claim 1 , wherein the ultrasonic transducer is coupled to the distal portion of the shaft, and wherein the shaft is configured to translate the ultrasonic vibration generated by the ultrasonic transducer to the tip assembly.

4. The system of claim 1 , wherein the ultrasonic transducer is coupled to the first segment of the tip assembly.

5. The system of claim 1 , wherein the cutting edge is disposed on a distal facing surface of the second segment.

6. The system of claim 1 , wherein the shaft includes a lumen extending through the proximal portion and the distal portion, and wherein the tip assembly is coupled to a wall of the shaft at the distal portion such that a medical device is enabled to extend through the lumen and distal of the tip assembly.

7. A system for fracturing a frame of a prosthesis comprising:
a first shaft having a proximal portion, a distal portion and a lumen extending through the proximal portion and the distal portion;
a first tip assembly coupled to the first shaft, wherein the first tip assembly includes a first segment having a first end coupled to the first shaft, the first segment extending transverse the first shaft;
a second shaft slidably disposed within the lumen of the first shaft, the second shaft having a proximal portion and a distal portion;
a second tip assembly coupled to the distal portion of the second shaft, the second tip assembly including a first segment having a first end coupled to the second shaft, the first segment extending transverse to the second shaft;
a first cutting edge disposed on a distal facing surface of the first segment of the first tip assembly and a second cutting edge disposed on a proximal facing surface of the first segment of the second tip assembly;
an ultrasonic electric generator; and
an ultrasonic transducer electrically coupled to the ultrasonic generator,
wherein ultrasonic vibration generated by the ultrasonic transducer is translated to the first tip assembly and/or the second tip assembly,
wherein the second shaft is slidable within the first shaft such that the second tip assembly is longitudinally slidable relative to the first tip assembly.

8. A system for fracturing a frame of a prosthesis comprising:
a shaft having a proximal portion and a distal portion;
a tip assembly coupled to the distal portion of the shaft, the tip assembly including:
a first segment extending along a longitudinal axis;
a second segment extending from a distal end of the first segment and transverse to the first segment, the second segment including a cutting edge; and
a third segment extending from a second end of the second segment opposite a first end of second segment coupled to the first segment, the third segment extending transverse to the second segment such that the third segment is generally parallel to the longitudinal axis,
wherein the tip assembly includes a collapsed configuration for delivery and an expanded configuration for fracturing the frame of the deployed prosthesis,
wherein in the collapsed configuration, the first segment, the second segment, and
the third segment are generally parallel to a central longitudinal axis of the shaft;

an ultrasonic electric generator; and
an ultrasonic transducer electrically coupled to the ultrasonic generator and configured to generate ultrasonic vibration,
wherein the ultrasonic vibration generated by the ultrasonic transducer is translated to the tip assembly.

9. The system of claim 8 , further comprising a pull wire configured to transition the tip assembly from the collapsed configuration to the expanded configuration.

10. A tip assembly for fracturing a frame of a deployed prosthesis with ultrasonic vibration comprising:
a first segment extending along a longitudinal axis;
a second segment extending from a distal end of the first segment and transverse to the first segment;
a third segment extending from a second end of the second segment opposite a first end of second segment coupled to the first segment, the third segment extending distally from the second segment and transverse to the second segment such that the third segment is generally parallel to the longitudinal axis; and
a cutting edge disposed on a surface of the second segment.

11. The tip assembly of claim 10 , wherein the cutting edge is disposed on a distal facing surface of the second segment.

12. The tip assembly of claim 10 , wherein the tip assembly includes a collapsed configuration for delivery and an expanded configuration for fracturing the frame of the deployed prosthesis, wherein in the collapsed configuration, the first segment, the second segment, and the third segment are generally parallel to the longitudinal axis.

13. A system for fracturing a frame of a prosthesis comprising:
a shaft having a proximal portion and a distal portion;
a tip assembly coupled to the distal portion of the shaft, the tip assembly including:
a first segment extending along a longitudinal axis;
a second segment extending from a distal end of the first segment and transverse to the first segment, the second segment including a cutting edge;
a third segment extending from a second end of the second segment opposite a first end of second segment coupled to the first segment, the third segment extending transverse to the second segment such that the third segment is generally parallel to the longitudinal axis; and
a bumper extending from the second segment, wherein the cutting edge is disposed between the bumper and the third segment, the bumper extending from the second segment parallel to the third segment;

an ultrasonic electric generator; and
an ultrasonic transducer electrically coupled to the ultrasonic generator and configured to generate ultrasonic vibration,
wherein the ultrasonic vibration generated by the ultrasonic transducer is translated to the tip assembly.

14. The system of claim 13 , wherein the cutting edge is disposed on a distal facing surface of the second segment and the third segment extends distally from the second segment.

15. A system for fracturing a frame of a prosthesis comprising:
a first shaft having a proximal portion, a distal portion and a lumen extending through the proximal portion and the distal portion;
a first tip assembly coupled to the first shaft, wherein the first tip assembly includes a first segment having a first end coupled to the f

Assignees

• Medtronic Vascular Inc

Inventors

• Genovese Matthew
• Storment Christopher

Classifications

• B26D7/086

  by vibrating, e.g. ultrasonically · CPC title

• A61B2017/320075

  single edge blade, e.g. for cutting · CPC title

• A61F2002/9534

  for repositioning of stents · CPC title

• A61F2/2418

  Scaffolds therefor, e.g. support stents · CPC title

• A61B2017/22097

  Valve removal in veins · CPC title