Patent US4412573A successfully refreshed from Google Patents.
US4412573A
Expired / Lapsed
US
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Injection site
Assignee: Baxter International Inc
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Filing: 1981-12-28
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Granted: 1983-11-01
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Expires: 2001-12-28
Abstract
Abstract An improved injection site (18) for a medical fluid container (10) is provided, along with a procedure facilitating the automated assembly of the injection site (18). An oversized, compressible situs (22) is retained in compressive relation to a generally tubular port (20) in a manner which makes inadvertent removal of the situs (22) virtually impossible.
Inventors
- 👤 Brian D. Zdeb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:37
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/1406; B; B23; B23P; B23P11/00; B23P11/02; B23P19/00; B23P19/02; B29; B29C; B29C65/00; B29C65/56; B29C65/58; B29C66/00; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5344; B29C66/61; B29C66/612; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; A61J1/05; A61J1/10; A61J1/1475; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/70; B29C66/71; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/56; B29L2031/565
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
80 words
A needle-pierceable injection site comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generally tubular port and needle-pierceable membrane defining a volume, said top end defining a substantially circular opening to said defined volume; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, disposed in said generally tubular port and retained in compressive sealing relation thereto.
Claim 2
Dependent Claim
80 words
A needle-pierceable injection site comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generally tubular port and needle-pierceable membrane defining a volume, said top end defining a substantially circular opening to said defined volume; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, disposed in said generally tubular port and retained in compressive sealing relation thereto.
Claim 3
Dependent Claim
20 words
The injection site as in claim 1, wherein said compressed situs includes a portion which projects beyond said top end.
Claim 4
Dependent Claim
14 words
The injection site as in claim 2, wherein said portion has an arcuate surface.
Claim 5
Dependent Claim
25 words
The injection site as in claim 2, wherein said compressed situs is free of any contact with an exterior surface of said generally tubular port.
Claim 6
Dependent Claim
19 words
The injection site as in claim 4, wherein said compressed situs conforms substantially in shaped to said defined volume.
Claim 7
Dependent Claim
66 words
The injection site as in claim 5, wherein said top end tapers inwardly so that the substantially circular opening has a diameter less than the diameter of said defined volume, as measured immediately below said top end, said tapered top end further maintaining said compressed situs and said generally tubular port in compressive sealing relation and inhibiting removal of said compressed situs from said tubular port.
Claim 8
Dependent Claim
15 words
The injection site as in claim 6, wherein said compressed situs comprises a polyisoprene material.
Claim 9
Dependent Claim
18 words
The injection site as in claim 6, wherein said generally tubular port is made from an injection-moldable plastic.
Claim 10
Dependent Claim
16 words
The injection site as in claim 8, wherein said generally tubular port comprises a polypropylene material.
Claim 11
Dependent Claim
22 words
The injection site as in claim 6, wherein said defined volume between said top end and said base end is substantially cylindrical.
Claim 12
Dependent Claim
38 words
The injection site as in claim 10, wherein the diameter of said compressed situs, when unstressed, is between about 4% and 16% larger than the height of said tubular port measured from said membrane to said top end.
Claim 13
Dependent Claim
50 words
The injection site as in claim 10, wherein the diameter of the circular opening is about 0.19 in., the diameter of said defined volume immediately below said top end is about 0.23 in. and the diameter of said compressed situs, when unstressed, is between about 0.24 in. and 0.26 in.
Claim 14
Dependent Claim
30 words
The injection site as in claim 12, wherein the height of said generally tubular port from said membrane through said top end, is between about 0.22 in. and 0.24 in.
Claim 15
Dependent Claim
35 words
The injection site as in claim 10, wherein the diameter of said situs, when unstressed, is between about 6% and 14% larger than a largest diameter of the volume defined by said generally tubular port.
Claim 16
Dependent Claim
85 words
A needle-pierceable injection site for a medical fluid container comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generally tubular port and needle-pierceable membrane defining a volume, said top end defining a substantially circular opening to said defined volume; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, disposed in said generally tubular port and retained in compressive sealing relation thereto.
Claim 17
Dependent Claim
85 words
A needle-pierceable injection site for a medical fluid container comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generally tubular port and needle-pierceable membrane defining a volume, said top end defining a substantially circular opening to said defined volume; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, disposed in said generally tubular port and retained in compressive sealing relation thereto.
Claim 18
Dependent Claim
124 words
A needle-pierceable injection site comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generally tubular port and needle-pierceable membrane defining a volume, said top end defining a substantially circular opening to said defined volume; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, disposed in said generally tubular port, said situs conforming substantially in shape to said defined volume and being retained in compressive sealing relation to said tubular port, said compressed situs further including a portion which projects beyond said top end, said compressed situs being free of any contact with an exterior surface of said generally tubular port.
Claim 19
Dependent Claim
124 words
A needle-pierceable injection site comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generally tubular port and needle-pierceable membrane defining a volume, said top end defining a substantially circular opening to said defined volume; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, disposed in said generally tubular port, said situs conforming substantially in shape to said defined volume and being retained in compressive sealing relation to said tubular port, said compressed situs further including a portion which projects beyond said top end, said compressed situs being free of any contact with an exterior surface of said generally tubular port.
Claim 20
Dependent Claim
182 words
A needle-pierceable injection site comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generaly tubular port and needle-pierceable membrane defining a volume which is substantially cylindrical between said top and base ends, said top end defining a substantially circular opening to said defined volume and tapering inwardly so that the substantially circular opening has a diameter less than the diameter of said defined volume, as measured immediately below said top end; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, said compressed situs including a portion which projects beyond said top end, said compressed situs being free of any contact with an exterior surface of said generally tubular port, conforming substantially in shape to said defined volume and being retained in compressive sealing relation to said generally tubular port; said tapered top end further maintaining said compressed situs and said generally tubular port in compressive sealing relation and inhibiting removal of said compressed situs from said tubular port.
Claim 21
Dependent Claim
182 words
A needle-pierceable injection site comprising: a generally tubular port including a base end and a top end; a needle-pierceable membrane extending across and closing said base end; said generaly tubular port and needle-pierceable membrane defining a volume which is substantially cylindrical between said top and base ends, said top end defining a substantially circular opening to said defined volume and tapering inwardly so that the substantially circular opening has a diameter less than the diameter of said defined volume, as measured immediately below said top end; and a needle-pierceable compressed situs of self-sealing material having the form of a sphere in its unstressed state, said compressed situs including a portion which projects beyond said top end, said compressed situs being free of any contact with an exterior surface of said generally tubular port, conforming substantially in shape to said defined volume and being retained in compressive sealing relation to said generally tubular port; said tapered top end further maintaining said compressed situs and said generally tubular port in compressive sealing relation and inhibiting removal of said compressed situs from said tubular port.
Claim 22
Dependent Claim
38 words
The injection site as in claim 17, wherein the diameter of said compressed situs, when unstressed, is between about 4% and 16% larger than the height of said tubular port measured from said membrane to said top end.
Claim 23
Dependent Claim
50 words
The injection site as in claim 17, wherein the diameter of the circular opening is about 0.19 in., the diameter of said defined volume immediately below said top end is about 0.23 in. and the diameter of said compressed situs, when unstressed, is between about 0.24 in and 0.26 in.
Claim 24
Dependent Claim
30 words
The injection site as in claim 19, wherein the height of said generally tubular port from said membrane through said top end, is between about 0.22 in. and 0.24 in.
Claim 25
Dependent Claim
35 words
The injection site as in claim 17, wherein the diameter of said situs, when unstressed, is between about 6% and 14% larger than a largest diameter of the volume defined by said generally tubular port.
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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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |