Liposuction filter and lipoplasty device

• US 4,834,703 A
• Filed: 11/23/1987
• Issued: 05/30/1989
• Est. Priority Date: 11/23/1987
• Status: Expired due to Fees

• Current Assignee: Martin P. Elliott, Will R. Dubrul
• Original Assignee: Martin P. Elliott, Will R. Dubrul
• Inventors: Dubrul, Will R., Elliott, Martin P.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): KRUTER, JEROME
• Application Number:
  US07/124,286
• Time in Patent Office: 554 Days
• Field of Search: 210/130, 210/407, 210/40, 55/296, 55/297, 55/313, 604/31, 604/35, 604/40, 604/48, 604/164, 604/184, 604/190, 604/275, 604/406, 604/38
• US Class Current: 604/48
• CPC Class Codes: A61B 10/02 Instruments for taking cell samples or for biopsy A61B10/0038 and A61B10/0045 take precedence; needle locating or guiding means A61B17/3403; samplers for enzymology or microbiology C12M1/26; sampling or preparing biological specimens G01N33/48
• CPC Class Codes: A61M 1/79 Filters for solid matter specially adapted for dental use A61C17/065
• CPC Class Codes: A61M 2202/0021 removed from and reintroduced into the body, e.g. after treatment
• CPC Class Codes: A61M 2202/08 Lipoids

Abstract

A in-line device for the aseptic collection and treatment of tissue aspirate comprising a cartridge housing a removable filter is described. The device provides filter means for removing desired cells from a crude tissue aspirate, a rake for scraping the cells from the surface of the filter and a pressure relief valve to divert the flow of aspirate when the filter capacity is exhausted. With the filter and rake removed the outer cartridge also serves as the barrel of a syringe for further transfer of harvested cells.

Claims

1. An in-line device for separating and trapping cells from a crude mixture of donor mammalian tissue aspirated by means of a vacuum through a cannula comprising:

a. an outer cartridge with intake and exhaust ports affixed thereto and a filter channel and a filter by-pass channel passing therethrough;

b. pressure responsive means for switching the flow of tissue aspirate through the cartridge between the filter channel and the filter by-pass channel;

c. a filter;

d. means for removing cells from the filter;

e. means for the subcutaneous reinjection of said cells into the donor.

2. The device of claim 1 wherein said means for reinjection comprises a plunger of mating cross section with the interior cross section of said cartridge.