US4396023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for obtaining blood samples from animals such as mice or rats
Assignee: Individual
•
Filing: 1981-09-21
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Granted: 1983-08-02
•
Expires: 2001-09-21
Abstract
Abstract Blood samples are obtained from the tails of animals such as mice or rats by a disposable tube located in a stopper and disposed in a vacuum flask. The tube is of such length that the tail extends into a receptacle at the end of the tube in which the samples are collected. Vacuum is communicated into the interior of the tube via a hole therein and promotes the flow of blood from the tail. The posterior of the animal makes a vacuum tight seal with the top of the tube on which the animal is seated. The tube is disposable after a single use.
Inventors
- 👤 Porter W. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:47
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150351; A61B5/150015; A61B5/150022; A61B5/150053; A61B5/150061; A61B5/150099; A61B5/150206; A61B5/150229
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
135 words
Apparatus for obtaining blood samples from rodents or small animals, such as mice and rats, having tails extending from the posterior thereof comprising a flask, a stopper, a tube having a blood receptacle at one end thereof, said tube and receptacle having a length approximately equal to that of the tail of the animal and an inside diameter slightly larger than the largest diameter of the tail for receiving said tail, said tube being disposed in said stopper at the end thereof opposite to said one end for seating the posterior of said animal in vacuum tight relationship when said stopper and tube are inserted into said flask, means providing communication for vacuum pressure between the interior of said tube and said flask to promote the flow of blood from said tail into said receptacle.
Claim 2
Dependent Claim
135 words
Apparatus for obtaining blood samples from rodents or small animals, such as mice and rats, having tails extending from the posterior thereof comprising a flask, a stopper, a tube having a blood receptacle at one end thereof, said tube and receptacle having a length approximately equal to that of the tail of the animal and an inside diameter slightly larger than the largest diameter of the tail for receiving said tail, said tube being disposed in said stopper at the end thereof opposite to said one end for seating the posterior of said animal in vacuum tight relationship when said stopper and tube are inserted into said flask, means providing communication for vacuum pressure between the interior of said tube and said flask to promote the flow of blood from said tail into said receptacle.
Claim 3
Dependent Claim
25 words
The invention as set forth in claim 1 wherein said receptacle is separable from said tube and is attached thereto for collecting the blood samples.
Claim 4
Dependent Claim
37 words
The invention as set forth in claim 1 wherein said tube has a flange at said opposite end thereof, said flange being seated on said stopper for providing said vacuum seal with the posterior of the animal.
Claim 5
Dependent Claim
39 words
The invention as set forth in claim 3 wherein said tube has a radius between said flange and the outer surface of said tube which provides for clearance between said stopper and said flange for ease of separation thereof.
Claim 6
Dependent Claim
17 words
The invention as set forth in claim 1 wherein said tube consists either of glass or plastic.
Claim 7
Dependent Claim
15 words
The invention as set forth in claim 5 wherein said tube consists of polypropylene plastic.
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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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |