Rotational thrombectomy apparatus and method with standing wave

• US 6,090,118 A
• Filed: 07/23/1998
• Issued: 07/18/2000
• Est. Priority Date: 07/23/1998
• Status: Expired due to Term

• Current Assignee: Argon Medical Devices
• Original Assignee: REX Medical LP
• Inventors: McGuckin, James F. Jr.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US09/122,483
• Time in Patent Office: 726 Days
• Field of Search: 606/159, 606/170, 606/180, 606/127, 606/128, 604/53, 604/49
• US Class Current: 606/159
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• 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 2017/22084 stone- or thrombus-dissolving
• CPC Class Codes: A61B 2017/320008 Scrapers
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic

Abstract

Apparatus for clearing lumens of thrombolytic material, comprising a motor including a control therefor operable using one hand holding the motor; an elongated wire connected to the motor for rotation by the motor; a catheter for enveloping a length of the wire; and a grip facilitating manual rotation of the catheter by the one hand independently of the wire as the wire is rotated by the motor at a speed sufficient to create a standing wave in a portion of the wire extending from the catheter.

Claims

1. Apparatus for clearing lumens of thrombolytic material, comprising:

a. a motor including control means therefor operable using one hand holding said motor;

b. an elongated wire connected to said motor for rotation thereof by said motor;

c. a catheter for enveloping a length of said wire; and

d. gripping means facilitating manual rotation of said catheter by said one hand independently of said wire as said wire is rotated by said motor at a speed sufficient to create a standing wave in a portion of said wire extending from said catheter;

e. first conduit means communicating with the interior of said catheter for selectably supplying or exhausting fluid to and from said catheter interior;

f. a sheath enveloping said catheter; and

g. second conduit means communicating with the interior of said sheath for selectably supplying or exhausting fluid to and from said sheath interior externally of said catheter, said second conduit means being movable longitudinally along said wire with said sheath.

2. Apparatus of claim 1 further comprising manually actuable means for selectably connecting said wire to said motor.

3. Apparatus of claim 2 wherein said gripping means is fixedly connected to said first conduit means communicating with said catheter interior and rotatable unitarily therewith about said wire.

4. Apparatus of claim 1 wherein said wire is hydrophilic.

5. Apparatus of claim 1 wherein said wire is not permanently deformable at room temperature.

6. Apparatus of claim 1 wherein the extremity of said wire remote from said catheter is angularly disposed with respect to the remainder of said wire.

7. Apparatus of claim 1 wherein the extremity of said catheter remote from said motor is angularly disposed with respect to the remainder of said catheter.

8. Apparatus of claim 1 wherein said catheter is sufficiently resistive to twisting that torque manually applied to said catheter proximate said motor results in angular movement of the extremity of said catheter remote from said motor.

9. Apparatus of claim 1 wherein the extremity of said wire remote from said catheter is J-shaped.

10. Apparatus of claim 1 wherein said wire is braided.

11. Apparatus of claim 1 wherein said wire is a filament.

12. Apparatus of claim 11 wherein the extremity of said filament extending from said catheter is at an angle to an axis of said filament.

13. Apparatus of claim 12 wherein said second conduit, said sheath, said motor, said catheter, said first conduit and said wire are all manually disassemblable from one another.

14. Apparatus of claim 1 further comprising a housing for said motor and said control means, adapted for grasping by said one hand, wherein said wire passes through said housing and emerges from opposite sides thereof.

15. Apparatus of claim 1 wherein said motor is electrically powered.