Patent US3378688A successfully refreshed from Google Patents.
US4817631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing tissue from a body
Assignee: Angiomed GmbH and Co Medizentechnik KG
•
Filing: 1987-11-30
•
Granted: 1989-04-04
•
Expires: 2007-11-30
Abstract
Abstract A cannula as part of a biopsy instrument set is provided, which has a mandrin guided in the cannula and a seal arranged in the interior of cannula for ease of handling to ensure that a clearly defined tissue or tissue fluid quantity is removed from the interior of a body.
Inventors
- 👤 Wolfram Schnepp-Pesch
- 👤 Josef Lindenberg
- 👤 Dieter Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0283; A61B2217/00; A61B2217/002; A61B2217/005; A61M; A61M1/00; A61M1/84
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
212 words
A method of removing tissue from an interior of a body, comprising: inserting an elongated obturator, a first end of which comprises a point, into a cavity of an elongated hollow body, wherein said obturator is adapted to fit tightly in a hollow space of said hollow body, and wherein said hollow body includes a sharpened insertion end and a self-sealing seal in an area remote from said insertion end, which completely seals said hollow body, and wherein said obturator is inserted through said seal, thereby perforating said seal such that said first end of said obturator is directed towards said insertion end of said hollow body, wherein before said obturator is inserted through said seal, said seal contains no perforations, and wherein said seal is capable of maintaining a vacuum within said hollow body upon complete withdrawal of said obturator out of said hollow body; inserting said hollow body housing said obturator into said interior of said body; drawing said obturator up such that said first end of said obturator is directed away from said insertion end of said hollow body, wherein said tissue is cut away by said sharpened insertion end and drawn up within said cavity of said hollow body and said obturator from said interior of said body.
Claim 2
Independent Claim
212 words
A method of removing tissue from an interior of a body, comprising: inserting an elongated obturator, a first end of which comprises a point, into a cavity of an elongated hollow body, wherein said obturator is adapted to fit tightly in a hollow space of said hollow body, and wherein said hollow body includes a sharpened insertion end and a self-sealing seal in an area remote from said insertion end, which completely seals said hollow body, and wherein said obturator is inserted through said seal, thereby perforating said seal such that said first end of said obturator is directed towards said insertion end of said hollow body, wherein before said obturator is inserted through said seal, said seal contains no perforations, and wherein said seal is capable of maintaining a vacuum within said hollow body upon complete withdrawal of said obturator out of said hollow body; inserting said hollow body housing said obturator into said interior of said body; drawing said obturator up such that said first end of said obturator is directed away from said insertion end of said hollow body, wherein said tissue is cut away by said sharpened insertion end and drawn up within said cavity of said hollow body and said obturator from said interior of said body.
Claim 3
Dependent Claim
13 words
A method according to claim 1, wherein said body is a living organism.
Claim 4
Independent Claim
17 words
A method as in any of claims 1 and 2, wherein said seal is made from rubber.
Claim 5
Independent Claim
18 words
A method as in any one of claims 1 and 2, wherein said seal is made from plastic.
Claim 6
Dependent Claim
13 words
A method according to claim 3, wherein said seal is made from silicone.
Claim 7
Independent Claim
39 words
A method as in any one of claims 1 and 2, wherein the step of drawing said obturator includes drawing said obturator completely out of said hollow body, and wherein said seal maintains a vacuum within said hollow body.
Claim 8
Dependent Claim
38 words
A method according to claim 6, further comprising following the step of removing said hollow body from said interior of said body, reinserting said obturator into said hollow body, wherein said tissue, is ejected from said hollow body.
Claim 9
Independent Claim
24 words
A method as in any one of claims 1 and 2, wherein said seal is secured in said hollow body by a retaining ring.
Claim 10
Independent Claim
25 words
A method as in any one of claims 1 and 2, wherein said seal is secured in said hollow body by an annular welding point.
Claim 11
Dependent Claim
36 words
A method according to claim 1, further comprising rotating said hollow body about a longitudinal axis while pressing said insertion end into the tissue to be removed, thereby cutting said tissue by said sharpened insertion end.
Claim 12
Dependent Claim
23 words
A method according to claim 2, wherein said tissue is selected from the group consisting of lung tissue, kidney tissue and liver tissue.
Claim 13
Dependent Claim
16 words
A method according to claim 1, wherein said sharpened insertion end comprises a trocar ground section.
Claim 14
Dependent Claim
16 words
A method according to claim 1, wherein said sharpened insertion end comprises an inner ground section.
References Cited (Backward Citations)
US3097646A
Cited
US3313299A
Cited
US3540447A
Cited
DE2139004A1
Cited
US4256119A
Cited
US4338934A
Cited
US4697600A
Cited
US4664128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |