Constant pressure blood mixture delivery system and method
First Claim
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1. A method for establishing constant pressure blood mixture fluid delivery to a patient comprising the steps of:
- (a) connecting a fluid delivery tube between the patient and an adjustable rate pump of a type for pumping blood mixture fluid at an adjustable flow rate;
(b) increasing the rate of pumping of fluid to the patient through the tube;
(c) measuring pressure in the fluid delivery tube while increasing the flow rate there through; and
(d) upon measuring a desired pressure, simultaneously disengaging a manual flow rate adjustment mechanism and engaging an automatic control mechanism by which the flow rate in said fluid delivery tube is automatically adjusted to maintain said desired pressure.
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Abstract
A system and method for blood mixture fluid delivery to a patient includes fluid delivery conduits connected to the patient for delivering blood mixture fluid, a pump for controlled pumping of blood mixture fluid through the conduits to the patient, and an automatic control mechanism operatively connected to the pump for controlling the pump so that the blood mixture fluid is continuously delivered to the patient at a defined constant pressure.
255 Citations
29 Claims
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1. A method for establishing constant pressure blood mixture fluid delivery to a patient comprising the steps of:
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(a) connecting a fluid delivery tube between the patient and an adjustable rate pump of a type for pumping blood mixture fluid at an adjustable flow rate; (b) increasing the rate of pumping of fluid to the patient through the tube; (c) measuring pressure in the fluid delivery tube while increasing the flow rate there through; and (d) upon measuring a desired pressure, simultaneously disengaging a manual flow rate adjustment mechanism and engaging an automatic control mechanism by which the flow rate in said fluid delivery tube is automatically adjusted to maintain said desired pressure.
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2. A system for blood mixture fluid delivery to a vascular system of a patient comprising:
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(a) a fluid delivery conduit connectable to said vascular system of the patient for delivering a blood mixture fluid; (b) a pump interconnected to said fluid delivery conduit for controlled pumping of said blood mixture fluid through said conduit to said vascular system of the patient; and (c) a control mechanism operatively connected to said pump for controlling a rate at which fluid is pumped from said pump so that said blood mixture fluid is delivered to said vascular system of the patient at a defined and maintained constant pressure. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for blood mixture fluid delivery to a patient comprising:
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(a) fluid delivery conduits connectable to said patient for delivering a blood mixture fluid wherein said fluid delivery conduits are operatively positioned within said patient'"'"'s arterial vascular system and said patient'"'"'s venous vascular system, and operatively connected to said system for blood mixture fluid delivery for selectable delivery to either said arterial system or to said venous system of said patient; (b) a pump interconnected to said fluid delivery conduits for controlled pumping of said blood mixture fluid through said conduits to the patient; and (c) a control mechanism operatively connected to said pump for controlling said pump so that said blood mixture fluid is delivered to the patient at a defined constant pressure.
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19. A system for blood mixture fluid delivery to a patient comprising:
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(a) a fluid delivery conduit connectable to said patient for delivering a blood mixture fluid; (b) a pump, having an adjustably variable flow rate and interconnected to said fluid delivery conduit, for controlled pumping of said blood mixture fluid through said conduit to the patient; and (c) a control mechanism operatively connected to said pump for controlling said pump so that said blood mixture fluid is delivered to the patient at a defined constant pressure, said control mechanism including; i. means for manually adjusting a variable flow rate; ii. means for automatically controlling said variable flow rate to maintain said defined constant pressure; and iii. means for selecting between said manual flow rate control and said automatic flow rate control for maintaining said defined constant pressure. - View Dependent Claims (20)
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21. A system for blood mixture fluid delivery to a vascular system of a patient at a constant pressure comprising:
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(a) means for selecting a defined constant pressure; (b) pump means for delivering a blood mixture fluid under pressure to said vascular system of the patient; (c) a monitor for measuring pressure of said blood mixture fluid delivered to said vascular system of the patient and for providing a signal representative of said measured pressure; and (d) control means, coupled between said means for selecting a defined constant pressure, said pump means and said monitor means, responsive to said signal representative of said measured pressure for controlling the rate at which fluid is pumped by said pump means so that said blood mixture fluid is delivered and maintained at said defined constant pressure.
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22. A system for blood mixture fluid delivery to a vascular system of a patient at a constant pressure, wherein said delivery system comprises:
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(a) means for controlling a variable blood mixture fluid flow rate in said delivery system; (b) a control mechanism operatively associated with said means for controlling a variable blood mixture fluid flow rate for maintaining said constant pressure by controlling said variable blood mixture fluid flow rate; (c) means, coupled to said control mechanism, to allow initial adjustment of said variable blood mixture fluid flow rate until a defined fluid delivery pressure is achieved, such defined fluid delivery pressure corresponding to a defined constant pressure; and (d) means, coupled to said control mechanism, to allow changing an operation mode of the delivery system to a constant pressure mode whereby in said constant pressure mode said variable blood mixture fluid flow rate is automatically varied so that said fluid delivery pressure is constantly maintained at said defined constant pressure.
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23. A system for blood mixture fluid delivery to a patient comprising:
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(a) fluid delivery conduit, operatively positioned within said patient at a delivery situs, for delivering a blood mixture fluid to said delivery situs; (b) a pump, coupled to said fluid delivery conduit, for producing a pressurized flow of said blood mixture fluid through said conduit to the patient; (c) a control mechanism, coupled to said pump, having a first manual flow rate control mode and having a second automatic constant pressure control mode operatively connected to said pump; and (d) means, coupled to said control mechanism, for selectably choosing said manual flow rate control mode or said automatic constant pressure control mode. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification