US3844662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sedimentation instrument for body fluids and method of microscopic examination of the sediment
Assignee: Individual
•
Filing: 1973-12-17
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Granted: 1974-10-29
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Expires: 1993-12-17
Abstract
Abstract An instrument useful for the microscopic examination of the sediments of body fluids, especially of urine is provided with a planar or rounded transparent bottom of uniform thickness permitting direct examination of the sediment settled at the bottom of the instrument by means of a microscope. The bottom may have a grating dividing the bottom into areas of predetermined size and the instrument may be graduated at its side walls to determine the height to which the specimen of body fluid is filled thereinto.
Inventors
- 👤 Froreich A Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:45
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A tubular receptacle for examining the sediment of body fluids, said receptacle being closed at one end by a thin optically planar transparent bottom of uniform thickness throughout thereby permitting microscopic examination of the body fluid in said receptacle from its lower side, said bottom of said receptacle being provided with a grating which permits the particles settling to the bottom in a predetermined area defined by said grating to be counted whereby the sediments in the entire body fluid sample can be calculated.
Claim 2
Dependent Claim
84 words
A tubular receptacle for examining the sediment of body fluids, said receptacle being closed at one end by a thin optically planar transparent bottom of uniform thickness throughout thereby permitting microscopic examination of the body fluid in said receptacle from its lower side, said bottom of said receptacle being provided with a grating which permits the particles settling to the bottom in a predetermined area defined by said grating to be counted whereby the sediments in the entire body fluid sample can be calculated.
Claim 3
Dependent Claim
33 words
The receptable of claim 1 wherein graduations are provided on the side wall of the receptacle to determine the height to which the receptacle is filled with the body fluid to be examined.
Claim 4
Dependent Claim
31 words
The receptacle of claim 1 in which the side wall of the receptacle is provided with means to permit suspensiontype mounting of the receptacle in a holding device of a centrifuge.
Claim 5
Dependent Claim
21 words
The receptacle of claim 3 wherein said mounting means comprises an annular, laterally extending shoulder at the top of said receptacle.
Claim 6
Dependent Claim
18 words
The receptacle of claim 1 wherein the thickness of said transparent bottom does not exceed about 0.4 mm.
Claim 7
Independent Claim
118 words
The method of examining the sediment of body fluids by causing the solid particle sediment to settle, comprising the steps of: a. transferring a predetermined amoUnt of such body fluid to a receptacle having a bottom wall formed of a thin optically planar transparent material of uniform thickness throughout, said wall being formed with a grating covering a predetermined area on said bottom wall, b. allowing the sediment in said body fluid to settle on said bottom wall, and c. examining microscopically the sediment on said grating of said bottom wall from beneath said bottom wall, the total amount of sediment in a known quantity of body fluid being calculable from the sediment count on said bottom wall.
Claim 8
Independent Claim
118 words
The method of examining the sediment of body fluids by causing the solid particle sediment to settle, comprising the steps of: a. transferring a predetermined amoUnt of such body fluid to a receptacle having a bottom wall formed of a thin optically planar transparent material of uniform thickness throughout, said wall being formed with a grating covering a predetermined area on said bottom wall, b. allowing the sediment in said body fluid to settle on said bottom wall, and c. examining microscopically the sediment on said grating of said bottom wall from beneath said bottom wall, the total amount of sediment in a known quantity of body fluid being calculable from the sediment count on said bottom wall.
Claim 9
Dependent Claim
69 words
A tubular receptacle for examining the sediment of body fluids, said receptacle being closed at one end by a thin optically planar transparent bottom of uniform thickness throughout thereby permitting microscopic examination of the body fluid in said receptacle from its lower side, said bottom permitting the particles settling thereon to be counted by said microscopic examination whereby the sediments in the entire body fluid sample can be calculated.
Claim 10
Dependent Claim
69 words
A tubular receptacle for examining the sediment of body fluids, said receptacle being closed at one end by a thin optically planar transparent bottom of uniform thickness throughout thereby permitting microscopic examination of the body fluid in said receptacle from its lower side, said bottom permitting the particles settling thereon to be counted by said microscopic examination whereby the sediments in the entire body fluid sample can be calculated.
Claim 11
Dependent Claim
19 words
The tubular receptacle of claim 7 wherein the thickness of said transparent bottom does not exceed about 0.4 mm.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |