US3888239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid injection system
Assignee: Individual
•
Filing: 1974-06-21
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Granted: 1975-06-10
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Expires: 1994-06-21
Abstract
Abstract An injection system that eliminates the need for multiple syringe changes common to an angiographic or other catheterization procedure, is disclosed. The subject system includes a pair of reservoirs for respectively maintaining saline solution and contrast dye under pressure for controlled injection into a patient. The reservoirs are maintained full by automatically filled, after a predetermined time delay, whenever any amount is used. Peristaltic pumps connected to supplies of saline solution and contrast dye function to fill and refill the reservoirs.
Inventors
- 👤 Morton K Rubinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:02
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/48; A61B6/481; A61B6/50; A61B6/504; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/14212; A61M5/14216
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
132 words
An angio-graphic injection system for continuously providing to a catheter supplies of two separate fluids used in the performance of a catheterization procedure, the injection system comprising: a pair of reservoir means for containing a ready supply of said two fluids, respectively; a pair of pressurizing means each connected to one of said pair of reservoir means for maintaining said fluids contained therein under a predetermined pressure; a pair of pumping means respectively connected to one of said reservoir means for pumping fluid into said reservoir means from a source thereof to continuously maintain said reservoir means in a filled condition; and fluid conduit means for interconnecting said respective reservoir means and pump means, said fluid conduit means provided with means for being connected to a catheter to supply said fluids thereto.
Claim 2
Dependent Claim
132 words
An angio-graphic injection system for continuously providing to a catheter supplies of two separate fluids used in the performance of a catheterization procedure, the injection system comprising: a pair of reservoir means for containing a ready supply of said two fluids, respectively; a pair of pressurizing means each connected to one of said pair of reservoir means for maintaining said fluids contained therein under a predetermined pressure; a pair of pumping means respectively connected to one of said reservoir means for pumping fluid into said reservoir means from a source thereof to continuously maintain said reservoir means in a filled condition; and fluid conduit means for interconnecting said respective reservoir means and pump means, said fluid conduit means provided with means for being connected to a catheter to supply said fluids thereto.
Claim 3
Dependent Claim
54 words
The injection system defined by claim 1, further including a pair of pump actuating means each connected to be respectively responsive to a different one of said reservoir means being in an unfilled condition for causing a pumping means to be energized to pump fluid to said reservoir means until obtaining a filled condition.
Claim 4
Dependent Claim
36 words
The injection system defined by cLaim 2, said pump actuating means including time delay means for delaying energization of said pumping means by a predetermined period of time following said reservoir means having an unfilled condition.
Claim 5
Dependent Claim
30 words
The injection system defined by claim 1, further including vacuum means adapted to be connected to a container for receiving waste fluids for reducing the interior pressure of said container.
Claim 6
Dependent Claim
31 words
The injection system defined by claim 1, further including valve control means connected to said pair of reservoir means for controlling the withdrawal of said fluids from both said reservoir means.
Claim 7
Dependent Claim
59 words
The injection system defined by claim 1, said pair of reservoir means each including: a housing defining an interior cavity; a plunger adapted to be inserted into and retracted from said interior cavity; and inlet means extending through said housing into said cavity whereby said fluid is injected into and ejected from said interior cavity through said inlet means.
Claim 8
Dependent Claim
34 words
The injection system defined by claim 1, said pair of reservoir means each including a syringe having an inlet needle thereof connected to have fluid ejected therethrough and pumped therethrough by said pumping means.
Claim 9
Dependent Claim
17 words
The injection system defined by claim 1, said pair of pumping means each including a peristaltic pump.
Claim 10
Dependent Claim
44 words
The injection system defined by claim 1, said pair of pressurizing means each including spring biased means for applying a mechanical force to said reservoir means corresponding thereto to have fluid contained by said reservoir means maintained at a predetermined pressure in said reservoir.
Claim 11
Dependent Claim
50 words
The injection system defined by claim 9, said spring biased means including: a telescoping member; a spring positioned to apply a mechanical force to said telescoping member; and means for adjustably compressing said spring to adjust said mechanical force applied to said telescoping member in accordance with said determined pressure.
Claim 12
Dependent Claim
75 words
The injection system defined by claim 2, each of said pump actuating means including: switching means responsive to a corresponding one of said reservoir means being in an unfilled condition for causing electrical energy to be applied to a corresponding one of said pumping means; and time delay means connected to said switching means for delaying energization of said pumping means by a predetermined period of time following said reservoir means having an unfilled condition.
Claim 13
Dependent Claim
45 words
The injection system defined by claim 6, said pair of pressurizing means each including spring biased means for applying a force to said plunger at a corresponding one of said reservoir means to have fluid contained in said interior cavity maintained at a predetermined pressure.
Claim 14
Dependent Claim
50 words
The injection system defined by claim 12, said spring biased means including: a telescoping member; a spring positioned to apply a mechanical force to said telescoping member; and means for adjustably compressing said spring to adjust said mechanical force applied to said telescoping member in accordance with said determined pressure.
Claim 15
Dependent Claim
54 words
The injection system defined by claim 13, further including a pair of pump actuating means each connected to be respectively responsive to a different one of said reservoir means being in an unfilled condition for causing a pumping means to be energized to pump fluid to said reservoir means until obtaining a filled condition.
Claim 16
Dependent Claim
75 words
The injection system defined by claim 14, each of said pump actuating means including: switching means responsive to a corresponding one of said reservoir means being in an unfilled condition for causing electrical energy to be applied to a corresponding one of said pumping means; and time delay means connected to said switching means for delaying energization of said pumping means by a predetermined period of time following said reservoir means having an unfilled condition.
Claim 17
Dependent Claim
31 words
The injection system defined by claim 15, further including valve control meAns connected to said pair of reservoir means for controlling the withdrawal of said fluids from both said reservoir means.
Claim 18
Dependent Claim
30 words
The injection system defined by claim 16, further including vacuum means adapted to be connected to a container for receiving waste fluids for reducing the interior pressure of said container.
Claim 19
Dependent Claim
17 words
The injection system defined by claim 17, said pair of pumping means each including a peristaltic pump.
Claim 20
Dependent Claim
44 words
The injection system defined by claim 6 further including indicator means for providing an indication of the volume of each dose of fluid ejected from said reservoir means, said indicator means being positioned to respond to movement of said plunger of said reservoir means.
Claim 21
Dependent Claim
31 words
The injection system defined by claim 6, further including mounting means for removably securing each of said reservoir means whereby said reservoir means are each adapted to be removable and disposable.
Claim 22
Dependent Claim
16 words
The injection system defined by claim 18, said two fluids including saline solution and radio-opaque dyes.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |