Patent US3832252A successfully refreshed from Google Patents.
US4787898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vented needle with sideport
Assignee: B Braun Medical Inc
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Filing: 1987-05-12
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Granted: 1988-11-29
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Expires: 2007-05-12
Abstract
Abstract A vented needle with sideport comprising a main body housing having dual input ports at substantially right angles to each other. An integral needle structure having a central aperture therethrough being generally in the same axial alignment as one input port and transversely to the other port. A tubular sleeve around the projecting needle for providing a second fluid flow path externally thereof. The needle preferably has a longitudinal groove therein for increasing the fluid flow along the circumference of the needle. The device is designed so that the needle is longer than the tubular sleeve and, thus, air can be passed therethrough without danger of any air being inputted to the liquid flow of the shorter tubular sleeve liquid flow passageway. A hydrophobic air vent filter preferably is connected to the air input of the device. The method of assembly of this vented needle with side port is also part of this invention.
Inventors
- 👤 Kenneth C. Raines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:54
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/162; A61M2005/1623
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
A vented drug reconstitution device comprising: a main body having two ports at substantially right angles to each other therein; said body having a needle with a central aperture for air flow therethrough substantially in line with one port for liquid, but not contiguous therewith; the other port in said body being transverse to the needle and one port, and contiguous with the central aperture of the needle for air flow therethrough; and tubular means affixed to the body substantially concentric with said needle for effecting liquid flow therealong from said one port.
Claim 2
Dependent Claim
93 words
A vented drug reconstitution device comprising: a main body having two ports at substantially right angles to each other therein; said body having a needle with a central aperture for air flow therethrough substantially in line with one port for liquid, but not contiguous therewith; the other port in said body being transverse to the needle and one port, and contiguous with the central aperture of the needle for air flow therethrough; and tubular means affixed to the body substantially concentric with said needle for effecting liquid flow therealong from said one port.
Claim 3
Dependent Claim
12 words
The device of claim 1, wherein the components are molded of plastic.
Claim 4
Dependent Claim
20 words
The device of claim 2, wherein said transversely mounted air flow port has a hydrophobic air vent filter connected thereto.
Claim 5
Dependent Claim
21 words
The device of claim 3, wherein said one port for liquid flow is designed for reception of a hypodermic syringe therewith.
Claim 6
Dependent Claim
17 words
The device of claim 4, wherein luer fittings are provided with each of the respective input ports.
Claim 7
Dependent Claim
18 words
The device of claim 1, wherein said transversely mounted air flow port has a hydrophobic filter connected thereto.
Claim 8
Dependent Claim
21 words
The device of claim 1, wherein said one port for liquid flow is designed for reception of a hypodermic syringe therewith.
Claim 9
Dependent Claim
16 words
The device of claim 1, wherein luer fittings are provided with each of the respective ports.
Claim 10
Independent Claim
108 words
A method of assembly of a vented needle, comprising the following steps: molding from a plastic material a needle body having a longitudinal port, a needle in substantial alignment with the longitudinal port and defining a flow passage therein, and an annular recess around a base portion of said needle; applying a solvent to the recess as formed in said body; and seating one end of a tubular sleeve in said recess so that the sleeve extends concentrically with the needle, whereby the sleeve is permanently affixed to the body and defines an annular flow passage around said needle separate from the flow passage defined within the needle.
Claim 11
Independent Claim
108 words
A method of assembly of a vented needle, comprising the following steps: molding from a plastic material a needle body having a longitudinal port, a needle in substantial alignment with the longitudinal port and defining a flow passage therein, and an annular recess around a base portion of said needle; applying a solvent to the recess as formed in said body; and seating one end of a tubular sleeve in said recess so that the sleeve extends concentrically with the needle, whereby the sleeve is permanently affixed to the body and defines an annular flow passage around said needle separate from the flow passage defined within the needle.
Claim 12
Dependent Claim
40 words
The method of claim 9, including the further steps of: spraying the needle tip with silicone; loading a guard cap over the needle and sleeve assembly; and pressing and holding the guard cap in place until the silicone lubricant dries.
Claim 13
Dependent Claim
23 words
The method of claim 10, including the further step of adding a filter structure to one of the ports of the body housing.
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) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |