Claims
- 1. A surgical rasp for use in percutaneous tissue removal, comprising:
- a handpiece;
- a motor supported by said handpiece having means for producing linearly reciprocating motion;
- an elongated cannula sized for introduction into the body, said cannula having a proximal and a distal end, said cannula supported by said handpiece at said proximal end and having a cutting opening at said distal end;
- a tubular drive shaft connected to said motor and extending through said cannula to said cutting opening, said drive shaft defining and irrigation channel therethrough;
- means for connecting said irrigation channel to a source of irrigation fluid to flow through said irrigation channel; and
- a rasp blade mounted to said drive shaft, said rasp blade including a plurality of teeth and defining several apertures between said teeth communicating with said irrigation channel, wherein said rasp blade is slidably disposed within said cannula at said distal end with said plurality of teeth extending through said cutting opening.
- 2. The surgical rasp of claim 1, wherein said cannula includes a rounded tip or the distal end of the cannula and said cutting opening extends into said rounded tip so that a portion of said rasp blade is exposed beyond said distal end of said cannula.
Parent Case Info
This application is a division of pending application Ser. No. 08/319,126, filed on Oct. 6, 1994 now pending, which is a division of application Ser. No. 08/018,045, filed on Feb. 16, 1993, which issued as U.S. Pat. No. 5,403,276 on Apr. 4, 1995.
US Referenced Citations (13)
Non-Patent Literature Citations (5)
Entry |
Publication: Automated Percutaneous Lumbar Diskectomy, by Gary Onik and Clyde A. Helms; Commentary by H.M. Herkowitz, M.D.; published 1991. |
Brochure: The Simple Solution, by Linvatec Concept Arthroscopy; published 1992. |
Brochure: Nucleotome System Automated Percutaneous Lumbar Discectomy, by Surgical Dynamics; published 1990. |
Brochure: Amset PLD Percutaneous Lumbar Discectomy , by AMC; published 1992. |
Official Gazette: Pressure Infusion Device; U.S. Patent No. 4,735,613 to Bellin et al.; filed Oct. 23, 2986, Serial No. 922,173; Issued Apr. 5, 1988. |
Divisions (2)
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Number |
Date |
Country |
Parent |
319216 |
Oct 1994 |
|
Parent |
18045 |
Feb 1993 |
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