Patent US3608550A successfully refreshed from Google Patents.
US3608550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer needle assembly
Assignee: Becton Dickinson and Co
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Filing: 1969-05-07
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Granted: 1971-09-28
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Expires: 1989-05-07
Abstract
Abstract A transfer needle assembly for transferring fluid from a fluid source to a fluid collection container. The assembly includes support means adapted at its rear end to be associated with the collection container and at its forward end to the fluid source. A first cannula is mounted on the support means and is adapted to be connected at its forward end to the fluid source and at its rear end to the collection container. A second cannula is mounted on the support means and is adapted to be connected at its forward end to the fluid source and at its rear end to the atmosphere. In this manner, fluid is permitted to be transferred from a fluid source to a collection container by atmospheric pressure when the volume within the collection container is sufficiently increased.
Inventors
- 👤 Theodore H Stawski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2096; A61J1/2003; A61J1/2006; A61J1/201; A61J1/2013; A61J1/2068; A61J1/2075
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
360 words
A transfer needle assembly for transferring a predetermined amount of fluid from the interior of a fluid source to a plurality of successive syringes, with each syringe including a barrel having an opening at the forward end thereof and a plunger slidably mounted therein in sealing engagement with the interior walls of the barrel so that movement of the plunger varies the volume interior of the syringe, said assembly comprising: support means adapted at its rear end to be removably connected To the forward open end of a syringe barrel and at its forward end to be removably connected to a fluid source; a first cannula having a passage therethrough mounted on said support means and adapted to be connected at its forward end to the interior of a fluid source and at its rear end to the interior of the syringe barrel; said first cannula being elongated so as to extend into the fluid of the fluid source when the fluid source is in an upright position; a second cannula having a passage therethrough mounted in said support means and adapted to be connected at its forward end to the interior of said fluid source and at its rear end to the atmosphere; said second cannula being shorter in length than said first cannula so that the forward tip thereof does not extend into the fluid in said fluid source when the fluid source is in an upright position; the fluid source, transfer needle assembly and syringe being arranged in ascending vertical order and the forward end of the syringe being in sealing engagement with said assembly so that, when the plunger of the syringe is withdrawn, the volume in said barrel is increased and atmospheric pressure will cause fluid to flow from the fluid source to the syringe to the desired level therein thereby facilitating the transfer of fluid from the fluid source upwardly into the syringe without the necessity of inverting the engaged fluid source, assembly and syringe; and said assembly permitting the filling of a plurality of successive syringes in the same manner from the same fluid source without the necessity of inverting the fluid source.
Claim 2
Dependent Claim
360 words
A transfer needle assembly for transferring a predetermined amount of fluid from the interior of a fluid source to a plurality of successive syringes, with each syringe including a barrel having an opening at the forward end thereof and a plunger slidably mounted therein in sealing engagement with the interior walls of the barrel so that movement of the plunger varies the volume interior of the syringe, said assembly comprising: support means adapted at its rear end to be removably connected To the forward open end of a syringe barrel and at its forward end to be removably connected to a fluid source; a first cannula having a passage therethrough mounted on said support means and adapted to be connected at its forward end to the interior of a fluid source and at its rear end to the interior of the syringe barrel; said first cannula being elongated so as to extend into the fluid of the fluid source when the fluid source is in an upright position; a second cannula having a passage therethrough mounted in said support means and adapted to be connected at its forward end to the interior of said fluid source and at its rear end to the atmosphere; said second cannula being shorter in length than said first cannula so that the forward tip thereof does not extend into the fluid in said fluid source when the fluid source is in an upright position; the fluid source, transfer needle assembly and syringe being arranged in ascending vertical order and the forward end of the syringe being in sealing engagement with said assembly so that, when the plunger of the syringe is withdrawn, the volume in said barrel is increased and atmospheric pressure will cause fluid to flow from the fluid source to the syringe to the desired level therein thereby facilitating the transfer of fluid from the fluid source upwardly into the syringe without the necessity of inverting the engaged fluid source, assembly and syringe; and said assembly permitting the filling of a plurality of successive syringes in the same manner from the same fluid source without the necessity of inverting the fluid source.
Claim 3
Dependent Claim
247 words
The invention in accordance with claim 1 wherein said support means includes a first member having an annular portion tapering outwardly and upwardly therefrom, the opening in said annular portion communicating with a bore in the remainder of said first member to form a continuous passage therethrough, said second cannula mounted in said bore of said first member and extending downwardly therefrom, a second member having a frustoconical portion extending downwardly and inwardly therefrom, and upstanding hollow cylindrical portion extending upwardly from said second member, a passageway extending through the said second member and communicating with the opening in said hollow cylindrical portion, said first cannula having a smaller outer diameter than the inner diameter of said second cannula mounted in said second member so as to extend upwardly into the opening of said cylindrical portion and downwardly from said second member beyond the lower end of said second cannula, said hollow cylindrical portion and said upwardly extending portion of said first cannula adapted to be connected to said fluid collection container, said frustoconical portion of said second member adapted to be mounted in said annular portion of said first member with said first cannula extending through the passage in said second cannula and beyond, means on said first and second members to provide a continuous passageway from said fluid source to the atmosphere when said support means is connected with a fluid source with said cannulas inserted therein and is connected with a fluid collection container.
Claim 4
Dependent Claim
152 words
The invention in accordance with claim 2 wherein said means on said first and second members to provide a passageway includes a plurality of spaced downwardly extending ribs on the circumference of said frustoconical portion of said second member which engage with the inner surface of said annular portion of said first member to restrict the placement of said frustoconical portion into said annular portion to less than its entire length so that when said support is connected to a fluid source and a fluid collection container and the volume is increased in said collection container, air from the atmosphere will pass through the space between the upper rim of said annular portion and the second member, between the ribs on said frustoconical portion, and through the passageway in said second cannula into the fluid source thereby forcing the desired amount of fluid through the first cannula into the fluid collection container.
Claim 5
Dependent Claim
226 words
The invention in accordance with claim 1 wherein said support means includes a first member having a hollow cylindrical portion extending upwardly therefrom, a first bore in the remainder of said first member communicating with the opening in said cylindrical portion of form a first continuous passage therethrough, a second bore in said first member substantially aligned with and spaced from said first bore and also communicating with the opening in said cylindrical portion to form a first continuous passage therethrough, said second cannula mounted in said second bore in said first member and extending downwardly therefrom, said first cannula mounted in said first bore so as to extend upwardly into the opening of said cylindrical portion and downwardly from said first member beyond the lower end of said second cannula, a second flexible punctureable member adapted to be mounted in the hollow cylindrical portion of said first member and to receive the upper end portion of said first cannula therethrough, said second member and the upper portion of said first cannula extending therethrough adapted to be connected to said fluid collection container, means on said second member and said first member to provide a continuous passageway from said fluid source to the atmosphere when said support means is connected with a fluid source with said cannulas inserted therein and is connected with a fluid container.
Claim 6
Dependent Claim
183 words
The invention in accordance with claim 4 wherein said means on said first member and second member to provide a passageway includes a plurality of spaced upwardly extending ribs on the inner circumference of said cylindrically shaped portion of said first member, said ribs depressing said second member at points around its outer circumference when said second member is inserted into said first member to provide a series of air passageways between the engaging surfaces of said first and second members, a circumferential shoulder formed on the interior surface of said cylindrical portion of said first member adjacent the lower end thereof to restrict the downward extension of said second member into said first member so that when said support is connected to a fluid source and a fluid collection container and the volume is increased in said collection container, air from the atmosphere will pass through the passageways between the first and second members and through the passageway in said second cannula into the fluid source thereby forcing the desired amount of fluid through the first cannula into the fluid collection container.
Claim 7
Dependent Claim
23 words
The invention in accordance with claim 1 wherein the needle assembly is connected to a syringe and is connected to a fluid source.
Claim 8
Independent Claim
300 words
A method of transferring a predetermined amount of fluid from the interior of a fluid source to a plurality of successive syringes, with each syringe including a barrel having an opening at the forward end thereof and a plunger slidably mounted therein in sealing engagement with the interior walls of the barrel so that movement of the plunger varies the volume interior of the syringe and utilizing a transfer needle assembly including support means, a first cannula mounted thereon and extending upwardly and downwardly therefrom into the fluid in the fluid source and a second cannula mounted thereon and being longer than the first cannula and extending downwardly therefrom into the fluid source and not the fluid contained therein and the second cannula being open to atmosphere at its upper end comprising: connecting the lower ends of said cannulas to the fluid source; connecting the upper end of said first cannula and said support means to the syringe; withdrawing the plunger of the syringe so as to provide an increase in volume within said syringe so that air enters the upper end of the second cannula and passes into the fluid source to force fluid through tHe first cannula into the syringe; arranging said fluid source, transfer needle assembly and syringe in ascending vertical order so that when the volume is increased within the syringe, fluid will flow from the fluid source to the syringe thereby facilitating the transfer of fluid from the fluid source upward into the syringe to collect fluid from the fluid source without the necessity of inverting the engaged fluid source, transfer needle assembly and syringe; and removing the syringe and filling a successive number of additional syringes consecutively in the same manner from the same fluid source without the necessity of inverting the fluid source.
Claim 9
Independent Claim
300 words
A method of transferring a predetermined amount of fluid from the interior of a fluid source to a plurality of successive syringes, with each syringe including a barrel having an opening at the forward end thereof and a plunger slidably mounted therein in sealing engagement with the interior walls of the barrel so that movement of the plunger varies the volume interior of the syringe and utilizing a transfer needle assembly including support means, a first cannula mounted thereon and extending upwardly and downwardly therefrom into the fluid in the fluid source and a second cannula mounted thereon and being longer than the first cannula and extending downwardly therefrom into the fluid source and not the fluid contained therein and the second cannula being open to atmosphere at its upper end comprising: connecting the lower ends of said cannulas to the fluid source; connecting the upper end of said first cannula and said support means to the syringe; withdrawing the plunger of the syringe so as to provide an increase in volume within said syringe so that air enters the upper end of the second cannula and passes into the fluid source to force fluid through tHe first cannula into the syringe; arranging said fluid source, transfer needle assembly and syringe in ascending vertical order so that when the volume is increased within the syringe, fluid will flow from the fluid source to the syringe thereby facilitating the transfer of fluid from the fluid source upward into the syringe to collect fluid from the fluid source without the necessity of inverting the engaged fluid source, transfer needle assembly and syringe; and removing the syringe and filling a successive number of additional syringes consecutively in the same manner from the same fluid source without the necessity of inverting the fluid source.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |