Angioplasty and ablative devices having onboard ultrasound components and devices and methods for utilizing ultrasound to treat or prevent vasopasm

• US 5,324,255 A
• Filed: 07/10/1992
• Issued: 06/28/1994
• Est. Priority Date: 01/11/1991
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Baxter International Inc.
• Inventors: Gesswein, Douglas H., Nita, Henry, Siegel, Robert J., Passafaro, James D.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Rafa, Michael
• Application Number:
  US07/911,651
• Time in Patent Office: 718 Days
• Field of Search: 128/24 AA, 604/22, 604/93, 604/101, 606/169-171
• US Class Current: 604/22
• 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 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 18/245 for removing obstructions in blood vessels or calculi
• CPC Class Codes: A61B 2017/00101 using an array of thermosensors
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00849 with respect to tissue, e.g. hollow organs
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/22018 segmented along its length
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22039 eccentric
• CPC Class Codes: A61B 2017/22041 outside the catheter
• CPC Class Codes: A61B 2017/320073 probe
• CPC Class Codes: A61B 2017/320088 with acoustic insulation, e.g. elements for damping vibrations between horn and surrounding sheath
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00029 open
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0042 using a fluid, e.g. circulating
• CPC Class Codes: A61M 2025/0183 : Rapid exchange or monorail catheters
• CPC Class Codes: A61M 25/104 : used for angioplasty
• CPC Class Codes: A61M 3/0279 : Cannula; Nozzles; Tips; their connection means

Abstract

A catheter device incorporating combined ultrasound ablation and balloon dilation components. The catheter device generally comprises an elongate catheter body having proximal and distal ends and an outer surface. Disposed on the outer surface of the catheter body is a dilation balloon. At least one balloon inflation lumen fluidly connects the proximal end of the catheter body to the dilation balloon to permit injection of inflation fluid into the dilation balloon. Extending longitudinally through the catheter body is an ultrasound transmission member having a proximal end and a distal end, with the proximal end being connectable to an ultrasound transducer such that ultrasonic energy will pass through the ultrasound transmission member to the distal end thereof. In alternative embodiments of the present invention, there are provided catheter devices incorporating combined ultrasound ablation and laser ablation components as well as combined ultrasound ablation and atherectomy ablation components.

Claims

1. A method of treating vasospasm during a transluminal balloon angioplasty procedure wherein a catheter having a dilation balloon formed thereon, and at least one lumen extending longitudinally therethrough, has been inserted into the blood vessel, and wherein vasospasm has occurred adjacent the distal end of said catheter, said method comprising the steps of:

a) inserting an elongate ultrasound transmission member through the lumen of said catheter;

b) connecting said elongate ultrasound transmission member to an ultrasound generating system operative to generate ultrasound energy within the frequency range of 10-1000 kHz; and

,

c) passing ultrasonic energy within the frequency range of 10-1000 kHz through said ultrasound transmitting member to effect treatment of said vasospasm adjacent the distal end of said catheter body.

2. The method of claim 1 wherein step (c) specifically comprises:

passing ultrasound having a frequency of approximately 20 Khz through said ultrasound

transmission member to effect ultrasonic treatment of the vasospasm adjacent the distal end of said catheter body.

3. The method of claim 1 further comprising:

(d) moving said catheter body back and forth to increase the size of the region of blood vessel to which ultrasonic treatment is delivered.

4. The method of claim 1 further comprising:

(d) moving the ultrasound transmission member back and forth to increase the size of the region of blood vessel to which ultrasonic treatment is delivered.