Lipectomy device

• US 4,815,462 A
• Filed: 04/06/1987
• Issued: 03/28/1989
• Est. Priority Date: 04/06/1987
• Status: Expired due to Term

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Vickie J. Clark
• Inventors: Clark, Vickie J.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Reilly, Colleen
• Application Number:
  US07/034,598
• Time in Patent Office: 722 Days
• Field of Search: 128/305, 128/304, 128/33.1, 128/750-752, 128/755, 128/758, 128/303.17, 128/303.14, 604/902, 604/35, 604/22
• US Class Current: 606/170
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 1/842 rotating continuously rotating surgical cutting instruments A61B17/32002
• CPC Class Codes: A61M 2202/08 Lipoids
• CPC Class Codes: A61M 2205/103 rotating
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: Y10S 604/902 Suction wands

Abstract

The lipectomy device includes a generally hollow tubular housing to the open front end of which are releasably sealingly connected an elongated hollow tubular suction conduit, with a rounded closed front end bearing at least one opening, and a cutting blade with the shaft and cutting tip thereof wholly disposed in the conduit and spaced inwardly therefrom. The cutting blade is releasably connected to an electrical motor in the housing for rotation of the blade, and a suction line also runs into the front end of the housing to remove severed tissue sucked through the blade and/or conduit. The device may include an electrocoagulation component which includes the blade tip in the form of electrically resistive metal, and an electrical circuit between a housing switch, the blade tip and an external electrical power source. The device is compact, portable and efficient in removing lipoidal tissue by suction, with excision thereof by the blade tip as it rotates in the conduit and also providing electrocoagulation, as needed, by the blade tip of small blood vessels to avoid hematomas.

Claims

1. An improved lipectomy device, said device comprising, in combination:

(a) an elongated generally tubular suction conduit having a central passageway extending the length thereof, a rounded generally closed front end with at least one opening therein extending into said passageway, and a rear coupler;

(b) an elongated cutting blade releasably secured to said conduit in said passageway, and a front cutting tip adjacent said conduit front end and wholly within said passageway, said blade including a rear fitting;

(c) a tubular housing having an open front end communicating with a central cavity therein, a suction line connected to said central cavity in said front end and extending exterior of said housing for connection with a suction source, coupling means releasably connected to said rear coupler and said rear fitting for releasably sealingly securing said blade and said conduit in said housing front end to close the same, with said blade shaft and tip disposed in said conduit, and drive means in said housing releasably connected to said blade for rotation thereof in said conduit; and

(d) electrocoagulation means connected to said blade tip, the blade tip being electrically conductive.

2. The improved lipectomy device of claim 1 wherein said blade shaft is hollow along the length thereof for transfer under suction of excised tissue therein to said housing front end and therefrom by said suction line.

3. The improved lipectomy device of claim 2 wherein said drive means comprises a switch-operated electrical motor in said housing.

4. The improved lipectomy device of claim 3 wherein said blade rear fitting includes a port communicating with said housing central cavity through said conduit passageway.

5. The improved lipectomy device of claim 4 wherein said blade tip is curved toward the longitudinal midline of said blade shaft and wherein said electrical motor is connectable to an external power source and is connected to an on-off switch on the exterior of said housing.

6. The improved lipectomy device of claim 4 wherein said conduit rear coupler is frictionally engageable with said housing front end and wherein said blade rear fitting is at least partially receivable within said rear coupler.

7. The improved lipectomy device of claim 1 wherein said blade shaft is electrically conductive and is electrically connected to said electrocoagulation means, the exterior of said blade shaft having an electrically insulative coating and wherein said conduit and housing are electrically insulative.

8. The improved lipectomy device of claim 7 wherein said electrocoagulation means includes an electrical circuit connected to said shaft and to an on-off switch on the exterior of said housing and extending out of said housing for connection to an electrical current source, and wherein said blade tip comprises an electrically resistive heating element.

9. The improved lipectomy device of claim 8 wherein said blade shaft is hollow along the length thereof for transfer of excised tissue by suction to and from said housing front end, and wherein said drive means comprises a switch-operated electrical motor in said housing connectable to an external electrical power source.