US3748911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for taking samples of liquid specimens especially for the automatic analysis apparatus
Assignee: F Hoffmann La Roche AG
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Filing: 1971-12-29
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Granted: 1973-07-31
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Expires: 1991-12-29
Abstract
Abstract A device for taking samples of liquid specimens, such as blood, microbiological suspension and the like for use with an automatic analysis apparatus. The device comprises a sampling head including a hollow needle connected to a pump at one end. The needle is fixed to a support mounted for movement with an endless belt with horizontal and vertical sides in two perpendicular directions. Means are provided for washing the exterior of the needle and are mounted for movement with the needle in one of the perpendicular directions; they comprise a block with bores, one of the bores being connected to a tube carrying a washing liquid thereto and another of the bores being connected to a tube carrying the washing liquid away therefrom. Optical or electrical means may be provided for positioning the needle relative to a test tube containing the liquid to be analysed.
Inventors
- 👤 A Rousselet
- 👤 P Durand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:17
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1004; G01N35/1081; G01N35/1083; G01N35/109; G01N35/1095
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling needle adapted to be connected at one end to a pump; a movable support of said needle from a first to second position for respective insertion in a first and second containers; and, means for washing the exterior of said needle operatively connected for movement with said needle from said first to second position.
Claim 2
Independent Claim
73 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling needle adapted to be connected at one end to a pump; a movable support of said needle from a first to second position for respective insertion in a first and second containers; and, means for washing the exterior of said needle operatively connected for movement with said needle from said first to second position.
Claim 3
Independent Claim
65 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus comprising: a hollow sampling needle adapted to be connected at one end to a pump; a movable support of said needle displaceable for translatory movement in two perpendicular directions; and means for washing the exterior of said needle operatively connected for movement with said needle in one of said directions.
Claim 4
Independent Claim
65 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus comprising: a hollow sampling needle adapted to be connected at one end to a pump; a movable support of said needle displaceable for translatory movement in two perpendicular directions; and means for washing the exterior of said needle operatively connected for movement with said needle in one of said directions.
Claim 5
Independent Claim
107 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling needle adapted to be connected at one end to a pump; movable support means for said needle mounted for movement with an endless belt having horizontal and vertical sides and further including vertical tracks for guiding the translatory movement of the support in one direction, whereby said vertical tracks are fixed to a frame mounted for sliding movement on horizontal tracks fixed to a housing of the device; and, means for washing the exterior of said needle operatively connected for movement at least in part with said needle.
Claim 6
Independent Claim
107 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling needle adapted to be connected at one end to a pump; movable support means for said needle mounted for movement with an endless belt having horizontal and vertical sides and further including vertical tracks for guiding the translatory movement of the support in one direction, whereby said vertical tracks are fixed to a frame mounted for sliding movement on horizontal tracks fixed to a housing of the device; and, means for washing the exterior of said needle operatively connected for movement at least in part with said needle.
Claim 7
Dependent Claim
28 words
A device according to claim 3, wherein the means for washing the exterior of the needle is mounted on an end of a bracket fixed to the frame.
Claim 8
Independent Claim
116 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling needle adapted to be connected at one end to a pump; container means for the liquid specimen to be sampled; a movable support of said needle; means for washing the exterior of said needle operatively connected for movement at least in part with said needle; and, means for automatically positioning the sampling needle in said container means, including a light source and a transducer sensitive to the light from said source, said light source being mounted on one arm and said transducer being mounted on another arm of a pair of arms extending parallel to said needle.
Claim 9
Independent Claim
116 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling needle adapted to be connected at one end to a pump; container means for the liquid specimen to be sampled; a movable support of said needle; means for washing the exterior of said needle operatively connected for movement at least in part with said needle; and, means for automatically positioning the sampling needle in said container means, including a light source and a transducer sensitive to the light from said source, said light source being mounted on one arm and said transducer being mounted on another arm of a pair of arms extending parallel to said needle.
Claim 10
Independent Claim
118 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling electrically conductive needle adapted to be connected at one end of a pump; a container provided for the liquid specimen to be sampled; a movable support of said needle; means for washing the exterior of said needle operatively connected for movement at least in part with said needle; and, means for automatically positioning the sample needle in said container including a metal tube extending around the needle and electrically insulated therefrom, the metal tube and the needle being connected to an AC source as well as to means for measuring the resistance of the liquid specimens to be analyzed.
Claim 11
Independent Claim
118 words
A device for taking samples of liquid specimens for use in an automatic analysis apparatus, comprising: a hollow sampling electrically conductive needle adapted to be connected at one end of a pump; a container provided for the liquid specimen to be sampled; a movable support of said needle; means for washing the exterior of said needle operatively connected for movement at least in part with said needle; and, means for automatically positioning the sample needle in said container including a metal tube extending around the needle and electrically insulated therefrom, the metal tube and the needle being connected to an AC source as well as to means for measuring the resistance of the liquid specimens to be analyzed.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |