US3640276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making intravenous or intra-arterial injections
Assignee: Allis Chalmers Corp
•
Filing: 1970-01-09
•
Granted: 1972-02-08
•
Expires: 1990-01-09
Abstract
Abstract An apparatus for and method of making intravenous or intraarterial injections such as forced blood transfusions or the like. In a preferred embodiment of the apparatus a modular construction is provided including a first housing unit for the air pressure chamber which receives the flexible blood container or the like and subjects it to a predetermined controlled air pressure. The modular assembly may include a second housing unit for a plenum chamber in fluid communication with the pressure chamber through an air pressure regulator. A third housing unit may be provided to receive an air compressor for supplying the plenum chamber with air. The plenum chamber may also be charged either from the hospital air supply or by the compressor with sufficient air for a predetermined number of blood transfusions and used in conjunction with the air pressure regulator and pressure chamber as a portable subassembly. In another modification, the pressure chamber or a pressure cuff may be connected directly to the hospital air supply through the air pressure regulator without using a plenum chamber in the system.
Inventors
- 👤 Robert C Dancy Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:07
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/145; A61M5/148; A61M5/1483; A61M5/1486; Y; Y10; Y10S; Y10S128/00; Y10S128/13
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
An apparatus for use in administering intravenous or intraarterial liquid injections comprising a pressure chamber, a flexible or pliable container which holds the liquid to be injected, said container being positioned in said pressure chamber, means extending from said container to the exterior of said pressure chamber for connecting said container in transfusing relation to a patient, a gas supply, conduit means connecting said gas supply to said pressure chamber, gas pressure regulating means interposed in said conduit means for regulating the pressure of gas admitted to said pressure chamber, said pressure chamber including a closure member movable to an open position to permit access to the interior of said pressure chamber, said conduit means being provided with an on-off valve which in off position interrupts fluid communication between said gas supply and said pressure chamber, and means interlocking said valve with said closure member whereby said valve is moved to said off position upon movement of said closure member to open position.
Claim 2
Independent Claim
163 words
An apparatus for use in administering intravenous or intraarterial liquid injections comprising a pressure chamber, a flexible or pliable container which holds the liquid to be injected, said container being positioned in said pressure chamber, means extending from said container to the exterior of said pressure chamber for connecting said container in transfusing relation to a patient, a gas supply, conduit means connecting said gas supply to said pressure chamber, gas pressure regulating means interposed in said conduit means for regulating the pressure of gas admitted to said pressure chamber, said pressure chamber including a closure member movable to an open position to permit access to the interior of said pressure chamber, said conduit means being provided with an on-off valve which in off position interrupts fluid communication between said gas supply and said pressure chamber, and means interlocking said valve with said closure member whereby said valve is moved to said off position upon movement of said closure member to open position.
Claim 3
Independent Claim
227 words
An apparatus for use in administering intravenous or intra-arterial liquid injections comprising a pressure chamber housing unit having a pressure chamber therein, a flexible or pliable container which holds the liquid to be injected, said container being positioned in said pressure chamber, means extending from said container to the exterior of said pressure chamber for connecting said container in transfusing relation to a patient, a plenum chamber housing unit, said plenum chamber housing unit containing a plenum chamber for storing gas to be admitted to said pressure chamber, said plenum chamber being adapted to be connected to a source of gas supply, said pressure chamber housing unit and said plenum chamber housing unit being engageable with each other in a modular assembly, conduit means connecting said plenum chamber to said pressure chamber, gas pressure regulating means interposed in said conduit means for regulating the pressure of gas admitted to said pressure chamber, said pressure chamber housing unit including a closure member movable to an open position to permit access to the interior of said pressure chamber, said conduit means being provided with an on-off valve which in off position interrupts fluid communication between said plenum chamber and said pressure chamber, and means interlocking said valve with said closure member whereby said valve is moved to said off position upon movement of said closure member to open position.
Claim 4
Independent Claim
227 words
An apparatus for use in administering intravenous or intra-arterial liquid injections comprising a pressure chamber housing unit having a pressure chamber therein, a flexible or pliable container which holds the liquid to be injected, said container being positioned in said pressure chamber, means extending from said container to the exterior of said pressure chamber for connecting said container in transfusing relation to a patient, a plenum chamber housing unit, said plenum chamber housing unit containing a plenum chamber for storing gas to be admitted to said pressure chamber, said plenum chamber being adapted to be connected to a source of gas supply, said pressure chamber housing unit and said plenum chamber housing unit being engageable with each other in a modular assembly, conduit means connecting said plenum chamber to said pressure chamber, gas pressure regulating means interposed in said conduit means for regulating the pressure of gas admitted to said pressure chamber, said pressure chamber housing unit including a closure member movable to an open position to permit access to the interior of said pressure chamber, said conduit means being provided with an on-off valve which in off position interrupts fluid communication between said plenum chamber and said pressure chamber, and means interlocking said valve with said closure member whereby said valve is moved to said off position upon movement of said closure member to open position.
References Cited (Backward Citations)
US1869443A
Cited
US1956006A
Cited
US2766907A
Cited
US3044663A
Cited
US3486539A
Cited
US3468308A
Cited
US3491377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |