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| Number | Title | Issue Date |
| 5549577 | Needleless connector A needleless connector allowing infusion and withdrawal of fluid in medical applications is disclosed. The injection site has a housing which contains a blunt cannula within it. An elastomeric pre-slit plunger is movably carried within the housing by the ... | 08/27/1996 |
| 5513957 | IV fluid delivery system An IV pump for delivering fluid through a resilient, deformable tube to improve the accuracy, consistency, and predictability of flow through the tube, wherein a plurality of pinching fingers occlude the tube against a flat portion of a pressure pad, and ... | 05/07/1996 |
| 5382232 | Infusion system with air-in-line clear function An infusion system with an air-in-line sensor is provided with improved apparatus and method for quickly and easily clearing small quantities of undissolved gas such as air from the sensor detection field. The infusion system includes an infusion pump hav... | 01/17/1995 |
| 5336174 | Flow control valve A valve for fluids employs two telescoping parts which cooperate with one another to block fluid flow when pulled partially apart and open a flow path therethrough when pushed together. A plunger component, having a central bore, a closed off end and perf... | 08/09/1994 |
| 5087245 | System and method for detecting abnormalities in intravascular infusion The system and method for detecting abnormalities in infusion of parenteral fluid involves producing perturbation of fluid flow by varying the flow rate of the fluid with respect to an equilibrium flow rate, measuring the pressure level, and measuring the... | 02/11/1992 |
| 4938079 | Thermal transit time flow measurement system The apparatus accurately measures flow rate of fluid within a conduit without direct fluid contact, based on the introduction of a thermal marker into the fluid stream by means of at least one externally mounted heater, and detection of the thermal marker... | 07/03/1990 |
| 4923444 | Negative pressure measurement system The negative pressure monitor is intended for use in combination with an IV administration set, for monitoring venous, arterial and other physiological pressure signals. The system provides a coupling mechanism with a sealed vacuum chamber between a fluid... | 05/08/1990 |
| 4743228 | Fluid flow monitoring method and system The invention is directed to a fluid flow monitoring method and system for parenteral fluid delivery systems for use in situations, such as with sedentary patients, when wide pressure variations are not expected. The resistance of the fluid delivery syste... | 05/10/1988 |
| 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, one or more fluid flow pulses are applied to the fluid with... | 12/01/1987 |
| 4687423 | Electrochemically-driven pulsatile drug dispenser An improved drug dispenser for the pulsatile or peristaltic delivery of drugs. The drug dispenser includes a fluid reservoir for storing the drug to be dispensed, an electrochemical pump for pumping the drug from the fluid reservoir, and a pump valve resp... | 08/18/1987 |
| 4680977 | Optical flow sensor An improved optical flow sensor for optically detecting and measuring the flow of a fluid through a drip chamber assembly. The sensor comprises an optical energy-emitting chip sealed within a first lens block having a refracting lens in one surface and an... | 07/21/1987 |
| 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 fixed, one laterally movable, are provided on the drop sensor h... | 05/26/1987 |
| 4626241 | Apparatus and method for controlling the parenteral administration of fluids An improved method and apparatus for controlling the flow rate in the parenteral administration of medical fluids, wherein a stored energy solenoid is utilized to move a pincher element against and away from a flexible IV tube in a repetitive manner to th... | 12/02/1986 |
| 4592365 | Electronic sphygmomanometer An electronic method and apparatus for automatically determining systolic and diastolic blood pressures and heart rate by accurately detecting, verifying and evaluating the full stream of korotkoff sounds produced as electrical signals from a microphone i... | 06/03/1986 |
| 4581014 | Fluid infusion system A fluid infusion system includes a selector valve for convenient interruption of administration of a primary infusion fluid to a patient to permit administration of a secondary infusion fluid, such as a selected drug solution, followed by resumption of pr... | 04/08/1986 |
| 4534756 | Fault detection apparatus and method for parenteral infusion system Apparatus and related method for use in a parenteral administration system, for detecting fault conditions such as an infiltration, an open fluid line or an air bubble in the fluid line. The apparatus is particularly adapted for use with a parenteral admi... | 08/13/1985 |
| 4398542 | Pressure diaphragm A pressure diaphragm, wherein at least a portion of an elongate fluid channel is formed diametrically across, and is open through, a flat raised surface of a substantially rigid, disk-like body, and wherein a flexible membrane overlies the raised surface ... | 08/16/1983 |
| 4397648 | Drop sensing unit and associated drip chamber for IV fluid administration A drop sensing unit and associated, disposable drip chamber for dedicated use with the sensing unit in an IV fluid administration system, the sensing unit being adapted for convenient installation on and removal from the drip chamber, with cooperable enga... | 08/09/1983 |
| 4367435 | Motor control system A digital servo control system for a d.c. motor to achieve stepping motor precision and a wider speed control range than either a conventional d.c. motor or a stepping motor, as may be typically utilized in an IV syringe pump. Motor position and direction... | 01/04/1983 |
| 4343185 | Temperature sensing probe and disposable probe cover A temperature sensing probe is provided including a probe shaft rigidly mounted on a handle and having a temperature sensing tip at the distal end of the shaft. A disposable cover is provided in the form of a unitary elongated tube constructed of heat con... | 08/10/1982 |
| 4181130 | Drop discriminator system An electronic method and apparatus for evaluation of the quality of drop detection in apparatus for parenteral administration of medical fluids, wherein the waveforms of electrical signals representing drop flow detection are evaluated for conformity with... | 01/01/1980 |
| 4037598 | Method and apparatus for fluid flow control A digital system wherein a wide variety of different electromechanical output control devices, e.g., stepping motor pump or solenoid actuated I.V. tube pincher, is driven by electrical output pulses of varible frequency and pulse width from a digital puls... | 07/26/1977 |
| 3994294 | Syringe pump valving and motor direction control system Apparatus for fluid flow control in a parenteral administration system, utilizing a syringe pump operated by a motor to repetitively fill and empty a syringe cartridge over a plurality of operational cycles of successive fill stroke and pump stroke period... | 11/30/1976 |
| 3993061 | Syringe pump drive system and disposable syringe cartridge A parenteral administration system, utilizing a syringe pump operated by a motor to repetitively fill and empty a disposable syringe cartridge over a plurality of operational cycles of successive fill and pump stroke periods. The syringe cartridge has no ... | 11/23/1976 |
