Scoring balloon with translating scoring wires

• US 10,531,890 B2
• Filed: 12/30/2016
• Issued: 01/14/2020
• Est. Priority Date: 12/30/2016
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Boyle, Melissa, Wright, Mark Nicholas
• Primary Examiner(s): Simpson, Sarah A
• Application Number:
  US15/395,901
• Publication Number:
  US 20180185051A1
• Time in Patent Office: 1,110 Days
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00402 Piezo electric actuators
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/00889 antimicrobial, disinfectant
• CPC Class Codes: A61B 2017/00893 pharmaceutically effective
• CPC Class Codes: A61B 2017/22014 the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire not applied in A61B17/22012
• CPC Class Codes: A61B 2017/22061 for spreading elements apart
• CPC Class Codes: A61B 2017/320008 Scrapers
• CPC Class Codes: A61B 2017/320078 Tissue manipulating surface
• CPC Class Codes: A61B 2017/320089 node location
• CPC Class Codes: A61M 25/09 Guide wires

Abstract

A device for introduction into a body vessel includes a shaft, a balloon positioned at the distal end of the shaft, a guidewire disposed longitudinally within the shaft to receive a guidewire during use, a balloon disposed at the distal end of the shaft, and longitudinal scoring wires to score a vascular lesion attached to the distal end of the shaft. The scoring wires are disposed over the balloon and disposed within the shaft. The proximal ends are welded or otherwise affixed to a spring mounted in the handle. The balloon expands when fluid is delivered to the balloon through the inflation lumen. This expansion pushes the scoring wires against the vascular lesion. The scoring wires attach to a source of vibrations. The scoring wires are made of a helical coil.

Claims

1. A scoring balloon catheter comprising:

a shaft having a distal region and a lumen;

an inflatable balloon mounted on the distal region;

a handle assembly at least partially comprising a hub mounted in the shaft proximally of the balloon, on the proximal-most half of the shaft, or on the proximal end of the shaft wherein at least a proximal section of the hub is in a fixed longitudinal position with respect to the shaft;

a scoring wire mounted to the shaft distally of the distal end of the balloon and extending proximally past the proximal end of the balloon, wherein the scoring wire has a proximal end terminating at and disposed within the hub; and

a vibrating means connected to the scoring wire via a transmission member for vibrating the scoring wire, wherein the transmission member includes a distal end disposed within the handle assembly.

2. The catheter of claim 1 wherein the vibrating means is selected from motors, micro motors, solenoids, and piezoelectrics.

3. The catheter of claim 1, wherein the transmission member has a driven end and transmitting end, said transmitting end corresponding to the distal end of the transmission member, wherein the transmitting end contacts the hub or the proximal end of the scoring wire.

4. The catheter of claim 3 wherein the transmission member extends through the wall of the shaft.

5. The catheter of claim 4 wherein the transmission member extends distally into a proximal end of the catheter.

6. The catheter of claim 5 wherein the vibrating means imparts longitudinal motion to the scoring wire.

7. The catheter of claim 5 wherein the vibrating means imparts axial motion to the scoring wire.

8. The catheter of claim 1 wherein the vibrating means is disposed completely inside the catheter.