Patent US4834703A successfully refreshed from Google Patents.
US4834703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liposuction filter and lipoplasty device
Assignee: Individual
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Filing: 1987-11-23
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Granted: 1989-05-30
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Expires: 2007-11-23
Abstract
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.
Inventors
- 👤 Will R. Dubrul
- 👤 Martin P. Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:24
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61M; A61M1/00; A61M1/71; A61M1/79; A61M2202/00; A61M2202/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
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.
Claim 2
Dependent Claim
94 words
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.
Claim 3
Dependent Claim
25 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |