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4731057 |
Transfusion apparatus
A transfusion apparatus including a pump section for sequentially pressing and occluding a transfusion tube by means of a plurality of finger elements of a peristaltic type thereby to feed a...
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4722734 |
Device for the intermittent pulsatory application of liquid pharmaceuticals
A device for the intermediate pulsatory application of liquid pharmaceuticals or medicine is provided which has a changeable storage container for the pharmaceutical connected to one end of a...
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4718891 |
Automated hemodialysis control based upon patient blood pressure and heart rate
A method and system for continuously monitoring patient heart rate and blood pressure during hemodialysis and for automatically controlling fluid extraction rate and/or dialysate sodium...
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4718430 |
Procedure and device for the administering of insulin or similar long-term medicaments
A procedure for the administration of insulin or similar long-term medicaments utilizing an elastic element, for example a membrane dividing a reservoir into two chambers, one of which holds the...
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4718576 |
Fluid infusion pumping apparatus
A fluid infusion positive displacement pump includes a plunger driven by a stepping motor which is operated by a motor control system. The control system advances the plunger to expel liquid in a...
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4718893 |
Pressure regulated implantable infusion pump
An implantable infusion pump (20) for infusing drugs or other chemical or solutions into the body. A movable diaphragm (26) forming a variable volume drug chamber (22). A fluid piston (32) opposing...
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4717548 |
Analytically controlled blood perfusion system
A blood gas analyzer system for monitoring real-time blood gas conditions in a patient perfusion circuit during open-heart surgery and other extracorporeal blood flow situations. Sensing electrodes...
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4714462 |
Positive pressure programmable infusion pump
A positive pressure positive displacement implantable infusion pump. A positive pressure fluid reservoir maintains infusate for delivery by a positive pressure displacement pump. Infusate is drawn...
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4710163 |
Detection of fluid flow faults in the parenteral administration of fluids
This invention is directed to a method and system for evaluating the fluid communication between a parenteral fluid delivery system and a patient's blood vessel. In accordance with the invention,...
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4710165 |
Wearable, variable rate suction/collection device
A compact, lightweight, variable rate suction and collection device is provided for the withdrawal and collection of fluid from a patient. The device includes a collection receptacle which is...
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4705506 |
Multiple solution IV system with setup error protection
A multiple solution IV administration system includes a plurality of IV fluid sources which are connected by flexible tubing to the inlet of an IV pump. A sequence valve suspended from the tubing...
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4696671 |
Infusion system having plural fluid input ports and at least one patient output port
An infusion system for administering multiple infusates at individually programmable rates, volumes, and sequences in any order from any one or more of plural fluid input ports through a patient...
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4690673 |
Dual mode I.V. infusion device with distal sensor
An improved dual mode peristaltic device is provided for infusing I.V. solutions to a patient through an I.V. tube. In a first mode of operation, the device functions as a peristaltic pump and in...
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4684367 |
Ambulatory intravenous delivery system
An apparatus for ambulatory intravenous delivery of substances to a recipient comprising a container and delivery means for pressurized delivery of the substance. The container communicates with a...
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4673391 |
Non-contact controlled micropump
A micropump disposed within a human body for continuously delivering small quantities of a pharmaceutical liquid stored therein to be injected in a human body, wherein the delivery rate is...
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4670006 |
Fluid and air infusion device
The fluid infusion device includes a primary and an auxiliary fluid pump capable of providing a substantially continuous flow of a fluid, such as air. A pressure regulator driven by a reversible...
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4670007 |
Fluid flow control process and apparatus
The invention is concerned with controlling fluid delivery by a fluid dispensing system in which fluid is dispensed from a container, through a delivery tube, under the control of a flow controller...
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4668216 |
System for mounting a drop sensor to a drip chamber
The invention is directed to an improved system for mounting a drop sensor onto a drip chamber having laterally projecting wing-like or flange-like extensions. A pair of mounting members, one...
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4627835 |
Tubing assembly for infusion device
An infusion device for a syringe includes a ratcheted stepper motor driven intermittently under the control of a control circuit to advance a syringe plunger driver. Different speeds are determined...
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4617014 |
Dual mode I. V. infusion device
A dual mode peristaltic device is provided for infusing I.V. solutions to a patient through an I.V. tube. In a first mode of operation, the device functions as a peristaltic pump and in the second...
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4604034 |
Peristaltic pumps
Control apparatus for a stepping motor driving a peristaltic pump comprises a presettable downcounter for supplying drive pulses to the stepping motor at different repetition rates so as to...
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4601700 |
Method for flow control monitoring
A flow status monitoring method is disclosed for a gravity flow metering system employing a metering chamber separated by a movable diaphragm into two compartments, each with a valved inlet and...
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4598733 |
Apparatus for detecting the volume of blood in a blood reservoir
In combination with a blood reservoir, a blood volume detecting apparatus is used to ensure safe operation of the reservoir which includes a conduit in fluid communication with a lower part of said...
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4592741 |
Medical apparatus designed for the aspiration of phneumothorax
A device for the aspiration of an air pocket surrounding a collapsed lung. The device includes a needle to be inserted into the cavity surrounding the collapsed lung, through the ribs of the...
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4589280 |
Fluid flow meter utilizing pressure sensing
An improved fluid flow meter for measuring a liquid flow rate is disclosed. It comprises a container having an interior cavity, an inlet opening, a vent opening, a first passageway and a second...
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4588927 |
Light supply apparatus for an endoscope
A light supply apparatus for an endoscope comprises a discharge lamp for supplying light to an endoscope, and a microprocessor for controlling various devices such as a display unit for displaying...
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4573968 |
Infusion and blood chemistry monitoring system
A patient infusion and blood chemistry monitoring system is provided for controlled fluid infusion with intermittent interruption for automated drawing of a patient blood sample into contact with...
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4563179 |
Blocking condition detection device in a fluid injection system
A medical fluid injection system comprises a flexible conduit, a supply device, a movable element, and a blocking condition detection device. The supply device supplies a pressurized medical fluid...
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4557726 |
Precision medication dispensing system and method
The implantable device includes a medication reservoir, a pulsatile pump and an absolute pressure transducer. The pumping pressure wave developed in the pumping chamber is measured by the absolute...
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4557725 |
I. V. Pump cassette
An I.V. pump cassette includes an enclosed pumping chamber with an inlet and outlet adapted to be connected to I.V. tubing. A reciprocable plunger extends from the top of the pumping chamber. The...
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4553958 |
IV Delivery controller
A controller (34) is disclosed for use with a dual delivery system including a primary fluid container (12) and a secondary fluid container (14). The display (48) on the controller (34) presents a...
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4551133 |
Patient controlled medication infusion system
A medication infusion system which includes an infusion line for introducing medication to a peripheral vein of a patient. The infusion system includes a pump for delivering the medication and a...
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4551134 |
Intravenous set
An intravenous set is described which includes a housing which defines three separate chambers: an uppermost valve chamber, an intermediate volumetric chamber, and a lowermost drip chamber. The...
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4532936 |
Automatic urine flow meter
The present inventive apparatus measures the output of urine optically, totalizes it and prints it on a self-adherent paper which can easily be afixed to the hospital chart. The apparatus includes...
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4531936 |
Device and method for the selective delivery of drugs to the myocardium
A device and a method for the selective delivery of drugs or therapeutic agents to the heart. The device consists of a catheter which is introduced into the ascending aorta via the right brachial...
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4530696 |
Monitor for intravenous injection system for detecting occlusion and/or infiltration
A monitor is described for use with an intravenous injection system of the type that includes an accumulator (18) located between the pump (14) and the needle (28) that connects to the patient's...
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4529401 |
Ambulatory infusion pump having programmable parameters
A portable infusion pump for controllably supplying a programmed volume of medicant to a patient. The apparatus generally comprises a small, portable container having a keyboard for programming the...
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4526568 |
Diagnostic method and apparatus for clamping blood glucose concentration
A diagnostic apparatus and method for clamping the blood glucose concentration of a subject at any one of a plurality of levels. A desired clamping level (BC) is selected and the value of the...
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4509943 |
Infusion control apparatus
An infusion control apparatus senses drops of an infusion liquid by way of a variation in the quantity of light received from a light source after the light passes through a drop chamber. When...
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4504263 |
Flow rate monitor with optical sensing chamber
A flow monitor including an optical sensing chamber and an electronic controller which allows determination of exact drop volumes and flow rates. In one embodiment, the flow monitor forms part of a...
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4501531 |
Control circuit for a blood fractionation apparatus
An apparatus for the continuous flow fractionation of whole blood incorporates motor driven whole blood, anti-coagulant and replacement pumps, negative and positive pressure monitors, and a dual...
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4498843 |
Insulin infusion pump
There is disclosed a microprocessor-controlled peristaltic pump for use in a portable continuous insulin infusion device. The peristaltic pump is configured with a removable cover comprising a part...
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4493697 |
Method and apparatus for pumping blood within a vessel
A dynamically augmenting pump system incorporates a sealed liquid-filled catheter which is inserted into a vessel such as an artery, and the pump system is operated in timed relation with the heart...
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4490135 |
Single needle alternating blood flow system
A two-pump single needle hemodialysis system is provided in which a flexible blood accumulator bag is located between the dialyzer and the second, venous blood pump. The accumulator bag is filled...
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4487601 |
Bubble detector circuit with variable reference level
A bubble detector system is provided which dynamically responds to changes in energy transmission efficiency. The output of a detector is coupled to a dynamic reference level circuit, which...
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4482345 |
Automated control for a two-directional pump
A controller for a two-directional air pump, of the type used in performing medical experiments is described. The controller includes a level sensing apparatus which is used to initiate an electric...
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4475901 |
Apparatus for improving blood sugar control in diabetics
There is provided an apparatus to improve control of blood sugars in diabetics. The apparatus comprises an infusion means and a control means which controls the infusion rate of one or more...
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4474309 |
Stepping motor control procedure for achieving variable rate, quasi-continuous fluid infusion
A control procedure for governing the incremental step operation of a pump stepping motor (74) employed in conjunction with a parenteral fluid metering device (2) is disclosed. The control...
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4469481 |
Apparatus for infusing medication
An apparatus for infusing liquid medication such as insulin into a living body has a memory for storing a basic pattern and meal patterns which decide the medication infusion dose in accordance...
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4468219 |
Pump flow rate compensation system
This invention relates generally to systems for handling biological fluids such as blood and more particularly relates to apparatus for maintaining a constant flow rate of fluid by a peristaltic...
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