Portable rapid massive parenteral fluid warming and infusion apparatus
First Claim
1. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
- (a) a pressurized parenteral fluid supply means for rapidly infusing massive amounts of parenteral fluid into a patient, including a disposable fluid flow circuit means connected to the fluid supply bags for supplying and infusing the parenteral fluid into the patient, and a pressure delivery circuit means operably connected to said fluid flow circuit for rapidly infusing massive amounts of the parenteral fluid into the patient;
(b) a fluid warming system operably connected to the pressurized parenteral fluid supply system and having means for warming massive amounts of parenteral fluid prior to infusion of said fluid into the patient;
(c) means for controlling the temperature of the parenteral fluid;
(d) means for controlling the rate of discharge of the parenteral fluid, said disposable fluid flow circuit having a liquid heat exchanger with said disposable fluid flow circuit means having;
(1) at least one parenteral fluid bag for providing the parenteral fluid, said bag having an outlet port for discharging the parenteral fluid from the bag;
(2) a drip chamber for monitoring the rate of fluid discharge from the parenteral fluid bag, said drip chamber having an inlet port serially connected to the outlet port of the parenteral fluid bag and an outlet port;
(3) a portion of said heat exchanger through which the parenteral fluid flows, said heat exchanger having an inlet port serially connected to the drip chamber outlet port and an outlet port;
(4) flexible tubular means for interconnecting members of the fluid flow circuit means, said tubular means having at least one distal end portion adapted for attaching a catheter to infuse the parenteral fluid into the patient; and
(5) means for controlling the discharge of the parenteral fluid from the distal end of said tubular means.
4 Assignments
0 Petitions
Accused Products
Abstract
A self contained portable apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence. The apparatus comprises a portable cabinet, a parenteral fluid supply system, a fluid warming system, and apparatus monitoring and failure warning systems. The portable cabinet has a rectangular shaped enclosure which houses portions of the fluid supply and warming systems and the monitoring and failure warning systems. Extending upwardly from the top of the rectangular enclosure is a vertical support member which carries upper and lower horizontal crossmembers. The upper crossmember carries a plurality of disposable parenteral fluid bags and their respective pressure cuffs which surround the bags. Serially connected to the fluid bags are, drip chambers for monitoring the flow of each fluid bag, a confluence chamber for combining the separate flows from the drip chambers into a unitary flow, a portion of a warm water heat exchanger for raising the temperature of the parenteral fluid, a filter for removing foreign particles and other debris from the parenteral fluid, and a bubble trap and eliminator for removing air from the parenteral fluid. The portion of the fluid supply system through which the parenteral fluid flows is disposable and may be supplied assembled and pre-charged to reduce the time for placing the apparatus in use. The fluid warming system is a dual heat system, having a primary heating element for maintaining the apparatus in a stand-by condition when the apparatus is not in use and a secondary heating element for raising the temperature of the parenteral fluid to the desired temperature while the apparatus is in use. Unique quick connect/disconnect means are provided for replacing the filter during the resuscitation of a patient and coupling the water side of the heat exchanger to the apparatus. Means are provided for simulating failure of the parenteral fluid supply and warming systems to test the condition of the systems.
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Citations
34 Claims
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1. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) a pressurized parenteral fluid supply means for rapidly infusing massive amounts of parenteral fluid into a patient, including a disposable fluid flow circuit means connected to the fluid supply bags for supplying and infusing the parenteral fluid into the patient, and a pressure delivery circuit means operably connected to said fluid flow circuit for rapidly infusing massive amounts of the parenteral fluid into the patient; (b) a fluid warming system operably connected to the pressurized parenteral fluid supply system and having means for warming massive amounts of parenteral fluid prior to infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid, said disposable fluid flow circuit having a liquid heat exchanger with said disposable fluid flow circuit means having; (1) at least one parenteral fluid bag for providing the parenteral fluid, said bag having an outlet port for discharging the parenteral fluid from the bag; (2) a drip chamber for monitoring the rate of fluid discharge from the parenteral fluid bag, said drip chamber having an inlet port serially connected to the outlet port of the parenteral fluid bag and an outlet port; (3) a portion of said heat exchanger through which the parenteral fluid flows, said heat exchanger having an inlet port serially connected to the drip chamber outlet port and an outlet port; (4) flexible tubular means for interconnecting members of the fluid flow circuit means, said tubular means having at least one distal end portion adapted for attaching a catheter to infuse the parenteral fluid into the patient; and (5) means for controlling the discharge of the parenteral fluid from the distal end of said tubular means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) a pressurized parenteral fluid supply system having means for rapidly infusing massive amounts of parenteral fluid into a patient, including a disposable fluid flow circuit means connected to the fluid supply bags for supplying and infusing the parenteral fluid into the patient, and a pressure delivery circuit means operably connected to said fluid flow circuit for rapidly infusing massive amounts of the parenteral fluid into the patient, said pressure delivery circuit having (1) a cylinder for storing gas under pressure; (2) a manual on/off valve for controlling the discharge of gas from the cylinder; (3) a regulator valve serially connected to said manual on/off valve for reducing the pressure of the gas supplied by said cylinder to a predetermined lower pressure; (4) an operator valve serially connected to the regulator valve for controlling the flow of said gas by an operator; (5) a plurality of flexible expansible pressure cuffs serially connected to said operator valve, each of said pressure cuffs enclosing one of said flexible fluid bags for squeezing said bags to rapidly infuse the parenteral fluid into the patient; and (6) tubular line means for interconnecting the members of the pressure delivery circuit; (b) a fluid warming system operably connected to the pressurized parenteral fluid supply system and having means for warming massive amounts of parenteral fluid prior to infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; and (d) means for controlling the rate of discharge of the parenteral fluid. - View Dependent Claims (12, 13, 14)
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15. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) a pressurized parenteral fluid supply system having means for rapidly infusing massive amounts of parenteral fluid into a patient; (b) a fluid warming system connected to the pressurized parenteral fluid supply system and having means for warming massive amounts of parenteral fluid prior to infusion of said fluid into the patient; said fluid warming system has a liquid heat exchanger and includes (1) a reservoir tank for storing a liquid for warming the parenteral fluid; (2) a liquid for warming the parenteral fluid; (3) a pump operably connected to said tank for re-circulating said liquid through the warming system; (4) a portion of said heat exchanger through which said warming system liquid flows, said heat exchanger portion being operably connected to said reservoir tank; (5) a primary heating element mounted inside of said reservoir tank for heating said liquid, said primary element being operative only when said pump is inoperative to maintain the apparatus in a stand-by condition; (6) a secondary heating element for heating said liquid, said secondary heating element being operative only when said pump is operative and said primary heating element is inoperative to maintain the temperature of the liquid at a pre-determined level; and (7) tubular line means for operably connecting the members of the fluid warming system, (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid. - View Dependent Claims (16, 17, 18, 19)
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20. Portable apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) a portable wheeled cabinet adapted for mounting a pressurized parenteral fluid supply system and a fluid warming system, said cabinet having means for pushing steering said portable apparatus to a patient; (b) a pressurized parenteral fluid supply system mounted on said cabinet, said pressurized fluid supply system having means for rapidly infusing massive amounts of parenteral fluid into a patient; (c) a fluid warming system mounted on the cabinet, said warming system operably connected to the pressurized parenteral fluid supply system and having means for warming massive amounts of parenteral fluid prior to infusion of said fluid into the patient; (d) means for controlling the temperature of the parenteral fluid; and (e) means for controlling the rate of discharge of the parenteral fluid, said portable cabinet including; (1) a generally rectangular enclosure carried on swivel casters mounted at the corners thereof, said enclosure having a recessed rear upper portion for mounting apparatus operating and test controls, an upper wall for mounting means for monitoring said fluid supply and warming systems and storing medications and supplies thereon, and door means for access to the interior thereof; (2) an L-shaped transparent cover pivotally mounted to said upper wall for enclosing said recessed upper cabinet portion; (3) a generally rectangular vertical support member extending upwardly from the forward portion of said upper wall; (4) an upper crossmember fixedly attached at the center thereof to the upper portion of said vertical member, said upper crossmember having a plurality of rearward extending hook members for supporting pressure cuffs and parenteral fluid bags; and (5) a lower crossmember fixedly attached at the center thereof to said vertical member at a location below said upper crossmember for attaching lines to pressurize said parenteral fluid bags.
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21. In an apparatus for rapidly warming and infusing a parenteral fluid into a patient under conditions where time is of the essence and of the class where a bubble trap and eliminator having a slideable valve is provided for purging air from the apparatus, the improvement which comprises a resilient conical sealing means at each end portion of said slideable valve for sealing the bubble trap and eliminator against the entry of fluid during the purging of air and alternately sealing the bubble trap and eliminator against the entry of air during the flow of parenteral fluid.
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22. In an apparatus for rapidly warming and infusing a parenteral fluid into a patient under conditions where time is of the essence and of the class where replaceable disposable members are provided, the improvement which comprises quick connect/disconnect couplings for the rapid replacement of disposable members having means for preventing spillage of parenteral fluid during the replacement of the disposable members, each of said couplings comprising:
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(a) a first cylindrical housing having an aperture in the center thereof for receiving a slideable valve sleeve, said housing having an annular sealing flange projecting inwardly in the center portion of the interior thereof; (b) a second cylindrical housing slideably engaging said first housing having an aperture in the center thereof for receiving a second slideable valve sleeve, said housing also having an annular sealing flange projecting inwardly in the center portion of the interior thereof; (c) resilient means for providing a leakproof seal between said first and second housings; (d) a pair of aligned opposite facing valve sleeves, each sleeve having an open end apertured portion and an opposite end closed cover portion, the open end portions of the sleeves having a plurality of circumferential cusps, each cusp having a lead portion normal to the axis of the respective sleeve and a ramp portion disposed angularly to the axis of the respective sleeve, the outer portion of each cover portion extending outwardly beyond the body of the sleeve and forming a sealing flange, and a plurality of fenestrations extending through the body of each sleeve, adjacent to the cover portion, one sleeve slideably engaging the first housing and the other sleeve slideably engaging the second housing, the cusp portions of each sleeve engaging each other whereby when said first housing is rotated in said second housing the valve sleeves initially maintain the same axial position with respect to each other and thereafter move axially away from each other and separate the sealing flanges of the sleeves from the sealing flanges of the housing to allow fluid to flow through said fenestrations and through said coupling; (e) a spring means mounted on the body of each valve sleeve for urging the sealing flange of a valve sleeve against the annular sealing flange in the respective housing; (f) a means for retaining the spring means on the valve sleeves; (g) resilient means for providing a leakproof seal between the sealing flange of each valve sleeve and the sealing flange of the respective housing; and (h) locking means for fixing the first sleeve to the second sleeve.
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23. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) pressurized parenteral fluid supply means for rapidly infusing a massive amount of parenteral fluid into a patient; (b) means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient, said means for warming including a heat exchanger means operable for transferring heat to parenteral fluid by the circulation of thermal liquid therethrough and a reservoir containing a thermal liquid for circulation through said heat exchanger (c) means responsive to the temperature of said liquid for controlling the temperature of the parenteral fluid; and (d) means for controlling the rate of discharge of the parenteral fluid. - View Dependent Claims (24, 25, 26)
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27. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) pressurized parenteral fluid supply means for rapidly infusing a massive amount of said parenteral fluid into a patient; (b) means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid; and (e) means for maintaining said parenteral fluid warming means in a stand-by condition such that the parenteral fluid is immediately warmed when said apparatus is initially applied for infusing the parenteral fluid into a patient.
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28. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) pressurized parenteral fluid supply means for rapidly infusing a massive amount of parenteral fluid into a patient; (b) means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid; and (e) means for purging air from the parenteral fluid supply means to prevent injury to the patient by an air embolism.
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29. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) pressurized parenteral fluid supply means for rapidly infusing a massive amount of parenteral fluid into a patient; (b) means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid; and (e) means for warning when the temperature of the parenteral fluid warming means is above a pre-determined value.
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30. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) pressurized parenteral fluid supply means for rapidly infusing a massive amount of parenteral fluid into a patient; (b) means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid; and (e) means for warning when the temperature of the parenteral fluid warming means is below a pre-determined value.
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31. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) pressurized parenteral fluid supply means for rapidly infusing a massive amount of parenteral fluid into a patient; (b) means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid; and (e) means for warning when the pressure of the pressurized parenteral fluid supply means is below a pre-determined value.
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32. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) pressurized parenteral fluid supply means for rapidly infusing a massive amount of parenteral fluid into a patient; (b) means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (c) means for controlling the temperature of the parenteral fluid; (d) means for controlling the rate of discharge of the parenteral fluid; and (e) a primary heating element for maintaining the parenteral fluid warming means in a stand-by condition and a secondary heating element for maintaining the parenteral fluid warming means at the pre-determined temperature during the infusion of the parenteral fluid into the patient.
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33. Portable apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) primary heating means for maintaining the apparatus in a stand-by condition such that the parenteral fluid is immediately warmed to a first pre-determined temperature when said apparatus is initially applied for infusing the parenteral fluid into a patient; (b) secondary heating means for maintaining the parenteral fluid at the first pre-determined temperature during the infusion of the parenteral fluid into the patient; (c) means for warning when the temperature of the parenteral fluid warming means is above a second pre-determined value; and (d) means for warning when the temperature of the parenteral fluid warming means is below a third pre-determined value.
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34. Apparatus for the rapid warming and infusion of massive amounts of a parenteral fluid into a patient under conditions where time is of the essence comprising in combination:
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(a) a cabinet adapted for mounting a means for rapidly infusing a massive amount of parenteral fluid into a patient means for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (b) pressurized parenteral fluid supply means mounted on said cabinet for rapidly infusing a massive amount of parenteral fluid into a patient; (c) means mounted on said cabinet for warming the massive amount of parenteral fluid prior to the infusion of said fluid into the patient; (d) means for warning when the temperature of the parenteral fluid warming means is above a second pre-determined value; (e) means for warning when the temperature of the parental fluid warming means is below a third pre-determined value; and (f) means for warning when the pressure of the pressurized parenteral fluid supply means is below a pre-determined value.
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Specification