Patent US4817443A successfully refreshed from Google Patents.
US4817443A
Expired / Lapsed
US
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Device for cleaning a liquid sample taking needle
Assignee: ABX SA
•
Filing: 1987-11-10
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Granted: 1989-04-04
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Expires: 2007-11-10
Abstract
Abstract A device is provided for cleaning a liquid sample taking needle, mounted fixedly on the frame of a sample taking apparatus, which device includes a mobile mechanism formed of a rinsing case (14) sliding over the sample taking needle (3) between a top position which it occupies during sample taking and a low position which it occupies during cleaning in which it covers the whole of the lower part of the needle, the end of this latter remaining withdrawn inside a cylindrical cleaning chamber (18) provided in the case through which the needle passes and at the lower part of which a depression is applied.
Inventors
- 👤 Henri Champseix
- 👤 Serge Champseix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:44
CPC Classifications
A; A61; A61M; A61M5/00; G; G01; G01N; G01N35/00; G01N35/10; G01N35/1004; A61B; A61B90/00; A61B90/70
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
158 words
A device for cleaning a sample taking needle, particularly a blood sample, comprising a frame, a needle for taking samples mounted on the frame, a mobile means mounted on said frame for contacting with said needle, said mobile means having a cylindrical cleaning chamber opening outwards with the needle received in the cleaning chamber, said mobile means being slidable over the needle between a high position at which the lower part of the needle projects out of the mobile means and is accessible for taking a liquid sample and a low position at which the mobile means covers the whole of the lower part of the needle, with the end of the needle lying withdrawn inside the cylindrical chamber, and fluid cleaning means for applying a vacuum at the lower part of said chamber for sucking a rinsing fluid injected through the needle for providing inner rinsing in a counterflow with respect to the liquid sample taking direction.
Claim 2
Independent Claim
158 words
A device for cleaning a sample taking needle, particularly a blood sample, comprising a frame, a needle for taking samples mounted on the frame, a mobile means mounted on said frame for contacting with said needle, said mobile means having a cylindrical cleaning chamber opening outwards with the needle received in the cleaning chamber, said mobile means being slidable over the needle between a high position at which the lower part of the needle projects out of the mobile means and is accessible for taking a liquid sample and a low position at which the mobile means covers the whole of the lower part of the needle, with the end of the needle lying withdrawn inside the cylindrical chamber, and fluid cleaning means for applying a vacuum at the lower part of said chamber for sucking a rinsing fluid injected through the needle for providing inner rinsing in a counterflow with respect to the liquid sample taking direction.
Claim 3
Dependent Claim
22 words
A device as in claim 1, wherein said mobile means comprises a guide means for guiding said needle into said cylindrical chamber.
Claim 4
Dependent Claim
21 words
A device as in claim 2, wherein said mobile means further comprises at least one seal for sealing the needle therein.
Claim 5
Dependent Claim
30 words
A device as in claim 1, wherein the mobile means has an inlet located at the upper part of the chamber for injection of fluid to externally clean the needle.
Claim 6
Dependent Claim
37 words
A device as in claim 1, wherein the mobile means comprises a profiled end piece to cooperate with the lower end of the needle to inhibit rinsing fluid from flowing through the outward opening of the chamber.
Claim 7
Dependent Claim
27 words
A device as in claim 1, wherein the frame comprises a fixed guide and said mobile means is guided by said fixed guide parallel to the needle.
Claim 8
Dependent Claim
22 words
A device as in claim 6, wherein the mobile means comprises a slide mounted on said fixed guide for relative sliding movement.
Claim 9
Dependent Claim
37 words
A device as in claim 6, wherein a rod and a cylinder assembly is mounted on the frame, one of said rod and said cylinder connected to the frame and the other connected to said mobile means.
Claim 10
Dependent Claim
24 words
A device as in claim 8, wherein said frame comprises a right-angled bracket, said right-angle bracket supporting both the fixed guide and the cylinder.
Claim 11
Dependent Claim
22 words
A device as in claim 1, wherein said frame comprises a floating stirrup to support the needle in a substantially vertical position.
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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 |