US4259952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood diluting method and apparatus
Assignee: Individual
•
Filing: 1978-06-22
•
Granted: 1981-04-07
•
Expires: 1998-06-22
Abstract
Abstract An apparatus for diluting packed red blood cells contained in a transfusion bag is provided comprising a flexible, squeezable diluent bag for containing a diluent for diluting the red blood cells in the transfusion bag. A tubular assembly with one or more fittings is provided for permanently attaching the diluent bag to an input port of the transfusion bag. The fittings are adapted for preventing a non-destructive, non-removable separation of the two bags. A uni-directional flow fluid valve means is provided for preventing reverse fluid flow from the transfusion bag to the diluent bag.
Inventors
- 👤 Donald R. Avoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:59
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2089; A61J1/05; A61J1/10; A61J1/2003; A61J1/2006; A61J1/201; A61J1/2013
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
96 words
An apparatus for administering a diluent to a quantity of red blood cells contained in a transfusion blood container having an input port and an output port for transfusing a patient comprising: a flexible, squeezable diluent bag for containing a diluent for red blood cells; means for providing a permanent fluid-tight connection between said diluent bag and said input port of said transfusion blood container in a fluid-tight manner; and means forming a check valve means for preventing a back flow of fluid from said transfusion blood container to said diluent bag through said connecting means.
Claim 2
Independent Claim
96 words
An apparatus for administering a diluent to a quantity of red blood cells contained in a transfusion blood container having an input port and an output port for transfusing a patient comprising: a flexible, squeezable diluent bag for containing a diluent for red blood cells; means for providing a permanent fluid-tight connection between said diluent bag and said input port of said transfusion blood container in a fluid-tight manner; and means forming a check valve means for preventing a back flow of fluid from said transfusion blood container to said diluent bag through said connecting means.
Claim 3
Dependent Claim
36 words
An apparatus according to claim 1 wherein the volume of the diluent bag is approximately 200 cc and the bag is sized and shaped for expressing substantially all of a fluid contained therein by one hand.
Claim 4
Independent Claim
18 words
An apparatus for administering a diluent to a transfusion bag having at least one fitting receiving port comprising:
Claim 5
Independent Claim
18 words
An apparatus for administering a diluent to a transfusion bag having at least one fitting receiving port comprising:
Claim 6
Dependent Claim
78 words
a flexible, squeezable diluent bag for containing a diluent suitable for diluting the contents of the transfusion bag; a tubular member for transporting diluent from the diluent bag to the transfusion bag; a fitting located at one end of the tubular member for permanently connecting the diluent bag to the fitting receiving port of the transfusion bag in a fluid-tight manner; and one-way valve means for preventing reverse fluid flow from the transfusion bag to the diluent bag.
Claim 7
Dependent Claim
78 words
a flexible, squeezable diluent bag for containing a diluent suitable for diluting the contents of the transfusion bag; a tubular member for transporting diluent from the diluent bag to the transfusion bag; a fitting located at one end of the tubular member for permanently connecting the diluent bag to the fitting receiving port of the transfusion bag in a fluid-tight manner; and one-way valve means for preventing reverse fluid flow from the transfusion bag to the diluent bag.
Claim 8
Dependent Claim
51 words
An apparatus according to claim 3 wherein the fitting receiving port of the transfusion bag has a tubular member with an annular shoulder at the interior end thereof extending radially inwardly toward the axis thereof and the fitting comprises a shouldered portion for engaging the annular shoulder of the tubular member.
Claim 9
Dependent Claim
42 words
An apparatus according to claim 4 wherein the fitting comprises a generally conically-shaped member having an inwardly tapered surface extending from the exterior edge of the shouldered portion thereof and a centrally located fluid passageway in fluid communication with the tubular member.
Claim 10
Independent Claim
82 words
A method of diluting the contents of a transfusion bag containing packed red blood cells comprising the steps of: permanently attaching to the transfusion bag a flexible, squeezable diluent bag containing a premeasured amount of diluent suitable for diluting the red blood cells in the transfusion bag; and transferring the contents of the diluent bag to the transfusion bag to dilute the red blood cells contained therein while preventing a back flow of fluid from said transfusion bag to said diluent bag.
Claim 11
Independent Claim
82 words
A method of diluting the contents of a transfusion bag containing packed red blood cells comprising the steps of: permanently attaching to the transfusion bag a flexible, squeezable diluent bag containing a premeasured amount of diluent suitable for diluting the red blood cells in the transfusion bag; and transferring the contents of the diluent bag to the transfusion bag to dilute the red blood cells contained therein while preventing a back flow of fluid from said transfusion bag to said diluent bag.
Claim 12
Dependent Claim
26 words
A method according to claim 6 wherein said step of transferring comprises the step of squeezing the contents of the diluent bag into the transfusion bag.
Claim 13
Dependent Claim
96 words
A method according to claim 6 wherein said step of attaching the diluent bag to a port of the transfusion bag comprises the step of permanently attaching the diluent bag to the transfusion bag by means of a fluid-tight tubular member and a fitting and said step of transferring the contents of the diluent bag to the transfusion bag while preventing a back flow of fluid therefrom comprises the step of squeezing the contents of the diluent bag into the transfusion bag through said fluid-tight tubular member, said fitting and a uni-directional flow fluid valve means.
References Cited (Backward Citations)
US3064647A
Cited
US3023750A
Cited
US3187750A
Cited
US3461868A
Cited
US3547401A
Cited
US3685795A
Cited
US3756237A
Cited
US3788369A
Cited
DE2356905A1
Cited
US3896733A
Cited
US3945380A
Cited
US4038983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |