US4048995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection site
Assignee: Baxter International Inc
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Filing: 1976-07-19
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Granted: 1977-09-20
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Expires: 1996-07-19
Abstract
Abstract An injection site is provided in the illustrative embodiment, in which a first inlet (to which a parenteral fluid conduit is connected) and a second inlet (adapted to receive injected medication) are parallelly located on one end of a main body portion. An outlet is located on the opposite end of the main body portion, with the second inlet and the outlet being substantially coaxial. The main body portion defines a single chamber that communicates with the inlets and outlets and is constructed to provide unobstructed flow of the parenteral liquid and medication to the outlet. The chamber is of a length that aids in preventing the medication that is injected from dropping through air.
Inventors
- 👤 Herbert Mittleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:41
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/04
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
200 words
An injection site for location between a parenteral source of fluid and a patient, which comprises: a first inlet to which a conduit from a first liquid container is adapted to be connected; a second inlet adapted to receive needle-injected medication; an outlet through which the combined first liquid and injected medication can flow with said outlet adapted for coupling to a conduit; a main body portion defining a single chamber that communicates with said first and second inlets and said outlet, said chamber having a sloped wall between said first inlet and said outlet, said chamber having a cross-sectional area adjacent said first and second inlets that is greater than the cross-sectional area of said chamber adjacent said outlet, said chamber having a cross-sectional area that is substantially greater than the cross-sectional area of said first inlet; said chamber having a length that is no greater than 1.5 inches to aid in preventing the medication that is injected from dropping through air; said second inlet and said outlet being substantially coaxial, whereby the needle is substantially prevented from piercing the chamber, and said chamber being constructed to provide unobstructed flow of the first liquid and medication to said outlet.
Claim 2
Dependent Claim
200 words
An injection site for location between a parenteral source of fluid and a patient, which comprises: a first inlet to which a conduit from a first liquid container is adapted to be connected; a second inlet adapted to receive needle-injected medication; an outlet through which the combined first liquid and injected medication can flow with said outlet adapted for coupling to a conduit; a main body portion defining a single chamber that communicates with said first and second inlets and said outlet, said chamber having a sloped wall between said first inlet and said outlet, said chamber having a cross-sectional area adjacent said first and second inlets that is greater than the cross-sectional area of said chamber adjacent said outlet, said chamber having a cross-sectional area that is substantially greater than the cross-sectional area of said first inlet; said chamber having a length that is no greater than 1.5 inches to aid in preventing the medication that is injected from dropping through air; said second inlet and said outlet being substantially coaxial, whereby the needle is substantially prevented from piercing the chamber, and said chamber being constructed to provide unobstructed flow of the first liquid and medication to said outlet.
Claim 3
Dependent Claim
23 words
In an injection site as described in claim 1, including a pierceable, resealable diaphragm connected to said second inlet with a compression fit.
Claim 4
Dependent Claim
22 words
In an injection site as described in claim 1, said main body portion and outlet being formed of a non-pierceable plastic material.
Claim 5
Dependent Claim
16 words
In an injection site as described in claim 1, wherein said chamber length is 0.75 inch.
Claim 6
Dependent Claim
27 words
In an injection site as described in claim 1, including a third inlet in communication with said chamber; said first, second and third inlets being parallelly positioned.
Claim 7
Dependent Claim
23 words
In an injection site as described in claim 5, including a pierceable, resealable diaphragm connected to said second inlet with a compression fit.
Claim 8
Dependent Claim
30 words
In an injection site as described in claim 5, and further including a fourth inlet in communication with said chamber; said first, second, third and fourth inlets being parallelly positioned.
Claim 9
Dependent Claim
22 words
An injection site as described in claim 7, including a pierceable, resealable diaphragm connected to said second inlet with a compression fit.
Claim 10
Dependent Claim
25 words
An injection site as described in claim 1, including fender means extending from said site in a direction transverse the axis of said second inlet.
Claim 11
Dependent Claim
15 words
An injection site as described in claim 9, said fender means comprising a circumferential flange.
Claim 12
Dependent Claim
188 words
An injection site for location between a parenteral source of fluid and a patient, which comprises: a first inlet to which a conduit from a first liquid container is adapted to be connected; a second inlet adapted to receive needle-injected medication; an outlet through which the combined first liquid and injected medication can flow with said outlet adapted for coupling to a conduit; a main body portion coupling said first and second inlets to said outlet, said second inlet and said outlet being substantially coaxial, whereby the needle is substantially prevented from piercing the chamber; said main body portion defining a single chamber the wall of which is continuous and without projections, said chamber communicating with said first and second inlets and said outlet; said chamber having a length that is no greater than 1.5 inches to aid in preventing the medication that is injected from dropping through air; said chamber having a sloped wall between said first inlet and said outlet with said chamber having a cross-sectional area adjacent said first and second inlets that is greater than the cross-sectional area of said chamber adjacent said outlet.
Claim 13
Dependent Claim
188 words
An injection site for location between a parenteral source of fluid and a patient, which comprises: a first inlet to which a conduit from a first liquid container is adapted to be connected; a second inlet adapted to receive needle-injected medication; an outlet through which the combined first liquid and injected medication can flow with said outlet adapted for coupling to a conduit; a main body portion coupling said first and second inlets to said outlet, said second inlet and said outlet being substantially coaxial, whereby the needle is substantially prevented from piercing the chamber; said main body portion defining a single chamber the wall of which is continuous and without projections, said chamber communicating with said first and second inlets and said outlet; said chamber having a length that is no greater than 1.5 inches to aid in preventing the medication that is injected from dropping through air; said chamber having a sloped wall between said first inlet and said outlet with said chamber having a cross-sectional area adjacent said first and second inlets that is greater than the cross-sectional area of said chamber adjacent said outlet.
Claim 14
Dependent Claim
41 words
An injection site as described in claim 11, wherein said chamber has a cross-sectional area that is substantially greater than the cross-sectional area of said first inlet; and a pierceable, resealable diaphragm connected to said second inlet with a compression fit.
Claim 15
Dependent Claim
27 words
An injection site as described in claim 11, including a third inlet in communication with said chamber, said first, second and third inlets all being parallelly positioned.
Claim 16
Dependent Claim
46 words
An injection site as described in claim 11, wherein said main body portion and outlet are formed of a non-pierceable plastic material and said outlet and said second inlet are substantially coaxial; and a pierceable, resealable diaphragm connected to said second inlet with a compression fit.
Claim 17
Dependent Claim
25 words
An injection site as described in claim 11, including fender means extending from said site in a direction transverse the axis of said second inlet.
Claim 18
Dependent Claim
15 words
An injection site as described in claim 15, said fender means comprising a circumferential flange.
Claim 19
Dependent Claim
15 words
An injection site as described in claim 11, wherein said chamber length is 0.75 inch.
References Cited (Backward Citations)
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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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |