US3734080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood collecting shut-off valve
Assignee: Johnson and Johnson
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Filing: 1970-10-16
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Granted: 1973-05-22
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Expires: 1990-10-16
Abstract
Abstract A blood collecting shut-off valve adapted to be placed over that portion of a double-ended blood collecting needle used for puncturing a vacuum container for blood collection. The shut-off valve comprises a flexible tubular needle sheath unattached to the needle hub, having a closed pierceable end adjacent to the needle point and needle contacting means on the inner surface of the sheath adjacent to the point of the needle and pressing against the needle cannula to serve as a seal against the passage of blood toward the open end of the sheath and to maintain the sheath on the needle surface. The sheath is composed of a material having the ability to distort under compression when the pierceable end of the sheath and the stopper of the vacuum container are pierced by the point of the needle and the needle cannula enters the vacuum container, with the sheath returning to its original position covering and sealing off the needle point after removal of the vacuum container from the needle.
Inventors
- 👤 D Petterson
- 👤 J Assenza
- 👤 H Kipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:29
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150206; A61B5/150221; A61B5/150259; A61B5/150351; A61B5/150374; A61B5/150381; A61B5/150389; A61B5/150473; A61B5/15048; A61B5/150488; A61B5/150496; A61B5/150534; A61B5/150572; A61B5/15058; A61B5/150603; A61B5/150694; A61B5/150717; A61B5/150732; A61B5/153; A61B5/154; A61B5/155; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3202
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
156 words
A blood collecting shut-off valve unit, comprising: a hollow needle with piercIng points at both ends and a hub intermediate said ends for attaching said unit to a holder; and an elastomeric tubular sheath extending over one of said needle ends from said piercing point to the base of said hub, said sheath having a closed pierceable end adjacent the piercing point on said one end and an open end adjacent said hub, the inner surface of said sheath having means contacting the exterior surface of said needle adjacent the piercing point on said one end to provide slidable contact between said needle surface and said sheath and to provide a fluid seal for the space between the closed end of said sheath and said needle contacting means, said inner surface being entirely spaced from said needle surface and said sheath being entirely unsecured to said needle and said hub except for said needle contacting means.
Claim 2
Dependent Claim
156 words
A blood collecting shut-off valve unit, comprising: a hollow needle with piercIng points at both ends and a hub intermediate said ends for attaching said unit to a holder; and an elastomeric tubular sheath extending over one of said needle ends from said piercing point to the base of said hub, said sheath having a closed pierceable end adjacent the piercing point on said one end and an open end adjacent said hub, the inner surface of said sheath having means contacting the exterior surface of said needle adjacent the piercing point on said one end to provide slidable contact between said needle surface and said sheath and to provide a fluid seal for the space between the closed end of said sheath and said needle contacting means, said inner surface being entirely spaced from said needle surface and said sheath being entirely unsecured to said needle and said hub except for said needle contacting means.
Claim 3
Dependent Claim
18 words
The valve of claim 1 wherein said needle contacting means comprises at least one continuous needle contacting member.
Claim 4
Dependent Claim
15 words
The valve of claim 2 wherein said needle contacting member is an inwardly projecting ring.
Claim 5
Dependent Claim
26 words
The valve of claim 3 wherein said ring is formed integral with said inner surface at a right angle to the longitudinal axis of said sheath.
Claim 6
Dependent Claim
17 words
The valve of claim 4 wherein said needle contacting means comprises a plurality of spaced circumferential rings.
Claim 7
Dependent Claim
12 words
The valve of claim 1 wherein said closed end is substantially flat.
Claim 8
Dependent Claim
27 words
The valve of claim 6 wherein means are provided to reduce the adhesion between the external surface of said flat closed end and a sheath compressing member.
Claim 9
Dependent Claim
22 words
The valve of claim 7 wherein said adhesion reducing means is at least one raised projection integral with said flat closed end.
Claim 10
Dependent Claim
17 words
The valve of claim 8 wherein said projection is a raised rib extending diametrically across said end.
Claim 11
Dependent Claim
14 words
The valve of claim 8 wherein said projection is a plurality of spaced buttons.
Claim 12
Dependent Claim
40 words
The blood collecting unit of claim 1, wherein said needle contacting means is a continuous circumferential constriction of said inner surface and the remainder of said inner surface tapers outwardly from said constriction to said open end of said sheath.
Claim 13
Dependent Claim
29 words
The blood collecting unit of claim 11, wherein the closed end of said sheath is substantially flat and at least one raised projection is formed on said flat end.
Claim 14
Dependent Claim
19 words
The blood collecting unit of claim 12, wherein said projection is a raised rib extending diametrically across said end.
Claim 15
Dependent Claim
16 words
The blood collecting unit of claim 12, wherein said projection is a plurality of spaced buttons.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |