Rotary catheter system

• US 4,732,154 A
• Filed: 06/16/1986
• Issued: 03/22/1988
• Est. Priority Date: 05/14/1984
• Status: Expired due to Term

• Current Assignee: Surgical Systems & Instruments, Inc.
• Original Assignee: Surgical Systems & Instruments, Inc.
• Inventors: Shiber, Samuel
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US06/874,546
• Time in Patent Office: 645 Days
• Field of Search: 128/305, 128/305.1, 128/310, 128/304, 128/751-758, 128/344, 128/348.1, 604/22
• US Class Current: 606/159
• 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 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• 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 17/320783 through side-hole, e.g. sliding or rotating cutter inside catheter
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61B 18/245 for removing obstructions in blood vessels or calculi
• 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: F16C 1/02 for conveying rotary movements
• CPC Class Codes: F16C 2316/10 in medical appliances, e.g. in diagnosis, dentistry, instruments, prostheses, medical imaging appliances
• CPC Class Codes: F16D 7/02 of the friction type

Abstract

A rotary catheter system insertable into a patient'"'"'s artery over a non rotating auger shaped guide-wire for remotely cutting and removing an obstruction therein, having a flexible catheter equipped with a tubular-blade at its front end and a motor connected to its other end.

Claims

1. A rotary catheter system insertable into a patient'"'"'s artery for remotely cutting and removing an obstruction therein, comprising in combination:

a flexible guide-wire insertable into a patient'"'"'s artery, at least a portion of said flexible guide-wire being shaped as an auger,

a rotary flexible-catheter with front and rear ends, said flexible-catheter being rotatably disposed and slidable over said flexible guide-wire, a tubular-blade mounted to said front end, said tubular-blade having a through hole communicating with said flexible-catheter for passing obstruction material through said hole and into said flexible-catheter,

means connected to said rear end for rotating said flexible-catheter and said tubular-blade around said flexible guide-wire.

2. A rotary catheter system as in claim 1, wherein a small longitudinal ridge is formed on at least a portion of an inner wall of said flexible-catheter.

3. A rotary catheter system as in claim 1, wherein said flexible-catheter has a larger diameter in the vicinity of said rear end than in the vicinity of said front end.

4. A rotary catheter system as in claim 1, wherein said flexible-catheter has a higher torque carrying capacity in the vicinity of said rear end than in the vicinity of said front end.

5. A rotary catheter system as in claim 1, wherein suction means are connected to said flexible catheter.

6. A rotary catheter system as in claim 1, having sleeve with a front opening and a rear opening, said flexible-catheter being rotatably disposed in said sleeve.

7. A rotary catheter system as in claim 6, said sleeve is longitudinally slidable over said flexible-catheter.

8. A rotary catheter system as in claim 7, said front opening is smaller in diameter than said tubular-blade to ease penetration of said rotary catheter system into the artery.

9. A rotary catheter system as in claim 7, wherein means for introducing fluids to the vicinity of said tubular-blade are connected to said sleeve.