US3630191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for filling capillary tubing with fluids
Assignee: Gilford Instrument Laboratories Inc
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Filing: 1969-05-15
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Granted: 1971-12-28
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Expires: 1989-05-15
Abstract
Abstract A plurality of lengths of evacuated capillary tubing having their ends sealed is mounted in a container with one end protruding from the closure of the container. The closure has a well formed by an upper collar, the small upper sections of the lengths of tubing extending through the closure and the well and being scored at the bottom of the well above the transverse wall or plug thereat. When used, blood or the like fluid is deposited in the well, the upper end of each protruding section of the lengths is given a lateral strain so that the portion breaks off under the surface of the fluid, and the vacuum in the hollow bore of the length of capillary tubing draws the fluid into itself. The lateral strain is effected manually or by means of a cap engaged on the closure and having an extension entering the well.
Inventors
- 👤 Saul R Gilford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/14; A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/150022; A61B5/150053; A61B5/150061; A61B5/150068; A61B5/150206; A61B5/150251; A61B5/150343; A61B5/150351; B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01L3/50; B01L3/508; A61B5/150755
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
93 words
The method of filling a capillary tubing length with blood or other fluid and retaining such fluid in the length which comprises forming a length of tubing with its interior hollow bore evacuated, its ends sealed and its surface scored at a location between its ends, immersing at least the portion of the length which is scored in a quantity of said fluid and breaking the length at said score below the surface of said quantity of fluid to permit the vacuum to draw fluid into the hollow bores of the resulting pieces.
Claim 2
Independent Claim
93 words
The method of filling a capillary tubing length with blood or other fluid and retaining such fluid in the length which comprises forming a length of tubing with its interior hollow bore evacuated, its ends sealed and its surface scored at a location between its ends, immersing at least the portion of the length which is scored in a quantity of said fluid and breaking the length at said score below the surface of said quantity of fluid to permit the vacuum to draw fluid into the hollow bores of the resulting pieces.
Claim 3
Independent Claim
107 words
The method of filling a capillary tubing length with blood or other fluid and retaining such fluid in the length which comprises: forming a length of tubing with vacuum on its interior and with its ends sealed, scoring the length adjacent one end thereof, collecting said fluid in a well having the tubing protruding through the well with the score in the well adjacent the bottom of said well, applying lateral pressure on said end to cause the upper section of the length to break off at the score line and fluid in the well to be drawn into the portion of the length below the well.
Claim 4
Independent Claim
107 words
The method of filling a capillary tubing length with blood or other fluid and retaining such fluid in the length which comprises: forming a length of tubing with vacuum on its interior and with its ends sealed, scoring the length adjacent one end thereof, collecting said fluid in a well having the tubing protruding through the well with the score in the well adjacent the bottom of said well, applying lateral pressure on said end to cause the upper section of the length to break off at the score line and fluid in the well to be drawn into the portion of the length below the well.
Claim 5
Dependent Claim
40 words
The method as claimed in claim 2 in which the well mounts a plurality of such lengths of tubing and each has its upper section broken off in succession until all of the lower portions are filled with said fluid.
Claim 6
Dependent Claim
29 words
The method as claimed in claim 2 in which the well mounts a plurality of such lengths of tubing and the upper sections thereof are broken off in pairs.
Claim 7
Dependent Claim
29 words
The method as claimed in claim 2 in which the well mounts a plurality of such lengths of tubing and each has its upper section broken off substantially simultaneously.
Claim 8
Dependent Claim
22 words
The method as claimed in claim 5 in which the well is enclosed at the time the upper sections are broken off.
Claim 9
Dependent Claim
25 words
The method as claimed in claim 4 in which the well is enclosed prior to breaking off the upper sections of the lengths of tubing.
Claim 10
Dependent Claim
170 words
Apparatus for filling capillary tubing with quantities of fluid, comprising: A. a vessel having a closed lower end and open at its upper end to provide a mouth, B. a closure member secured to the mouth and having i. a transverse plug closing the mouth, ii. an annular upstanding wall above the plug and forming a well, C. a plurality of lengths of capillary tubing, each length i. having its opposite ends sealed, ii. the hollow bore of each length being evacuated, iii. being sealingly engaged through the plug with the major portion of the length disposed on the interior of the vessel, and a small upper section protruding upwardly through the well, iv. and having a score line on its outer surface at the location where it emerges into the well from said plug, whereby when fluid is in said well and said upper section of a length is broken off at said score, the vacuum will draw said fluid at least into the major portion of said length.
Claim 11
Dependent Claim
170 words
Apparatus for filling capillary tubing with quantities of fluid, comprising: A. a vessel having a closed lower end and open at its upper end to provide a mouth, B. a closure member secured to the mouth and having i. a transverse plug closing the mouth, ii. an annular upstanding wall above the plug and forming a well, C. a plurality of lengths of capillary tubing, each length i. having its opposite ends sealed, ii. the hollow bore of each length being evacuated, iii. being sealingly engaged through the plug with the major portion of the length disposed on the interior of the vessel, and a small upper section protruding upwardly through the well, iv. and having a score line on its outer surface at the location where it emerges into the well from said plug, whereby when fluid is in said well and said upper section of a length is broken off at said score, the vacuum will draw said fluid at least into the major portion of said length.
Claim 12
Dependent Claim
46 words
The apparatus as claimed in claim 8 in which said closure member is an integral member and together with said lengths of capillary tubing provide an assemblage that is readily installed within or removed from said vessel irrespective of whether the upper sections are broken off.
Claim 13
Dependent Claim
38 words
The apparatus as claimed in claim 8 in which the plug has an upper surface that provides the bottom floor of the said well, and the said score line of each length is disposed substantially at said surface.
Claim 14
Dependent Claim
46 words
The apparatus as claimed in claim 8 in which the upper sections are of such length as to protrude somewhat above the upper end of said well enabling the user to grasp the same without touching the fluid in the well when said well is filled.
Claim 15
Dependent Claim
43 words
The apparatus as claimed in claim 8 in which said upper sections are shorter than the length of the well so that the mouth of the well may be pressed against a source of fluid without contacting the ends of said upper sections.
Claim 16
Dependent Claim
24 words
The apparatus as claimed in claim 12 which includes means adapted to be inserted into said well to engage and break said upper sections.
Claim 17
Dependent Claim
19 words
The apparatus as claimed in claim 13 in which said last means has a cap for enclosing said well.
Claim 18
Dependent Claim
23 words
The apparatus as claimed in claim 13 in which said inserted means is a blade adapted to be rotated to sweep said well.
Claim 19
Dependent Claim
27 words
The apparatus as claimed in claim 14 in which said inserted means is a blade adapted to be rotated to sweep said well by twisting said cap.
Claim 20
Dependent Claim
63 words
The apparatus as claimed in claim 14 in which said lengths of capillary tubing are arranged in a circle and the inserted means comprise a wedging wall formation adapted to engage the ends of the upper sections while said cap is being applied to the top of the well and exert lateral force against the same for breaking same at said score lines.
Claim 21
Dependent Claim
17 words
The apparatus as claimed in claim 17 in which the wedging wall formation has a frustoconical surface.
Claim 22
Dependent Claim
18 words
The apparatus as claimed in claim 17 in which the wedging wall formation has a frustoconical interior surface.
Claim 23
Dependent Claim
19 words
The apparatus as claimed in claim 10 in which said lengths of capillary tubing are arranged in a circle.
Claim 24
Dependent Claim
33 words
The apparatus as claimed in claim 20 in which the floor of the well has a central crown which slopes down toward the circle defined by the upper sections emerging from said floor.
References Cited (Backward Citations)
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CA124141A
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US1124285A
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US1594370A
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FR596496A
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US2290857A
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US3332288A
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |