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| Number | Title | Issue Date |
| 5328460 | Implantable medication infusion pump including self-contained acoustic fault detection apparatus Apparatus located in an implantable medication infusion pump for quickly and easily detecting a condition adversely affecting medication delivery in the implantable medication infusion pump is disclosed which can reliably detect occurrences including an o... | 07/12/1994 |
| 5264843 | High speed reflected impedance telemetry system for implantable medical device A telemetry system which will transmit data at a relatively high rate while retaining a high degree of accuracy is disclosed which utilizes a servo feedback loop in conjunction with a conventional reflected impedance receiving front end parallel LC circui... | 11/23/1993 |
| 5243510 | Plug-in power supply adapter with components in the strain relief member An improved power supply adapter is provided for plug-in connection to a standard AC power supply receptacle, and to provide a DC voltage to an associated electronic instrument. The power supply adapter comprises a relatively compact case having an end fa... | 09/07/1993 |
| 5222493 | Verification of capture using an indifferent electrode mounted on the pacemaker connector top A cardiac pacing system includes circuitry for verification of capture having an indifferent electrode mounted on the pacemaker connector top. The cardiac pacing system may use one or two bipolar or unipolar leads. Capture is sensed between the indifferen... | 06/29/1993 |
| 5217442 | Aspiration and refill kit for a medication infusion pump A kit is provided for use in refilling a medication infusion pump of the type adapted for implantation into the body of a patient. The kit comprises a syringe having a plunger mounted for reciprocation within a syringe barrel having a manually operable co... | 06/08/1993 |
| 5176631 | Ultrasonic air-in-line detector for detecting entrained air in a medication infusion system An ultrasonic air-in-line detection system for use in detecting entrained air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed which can accurately detect entrained air bubbles in any type of fluid, whether clear... | 01/05/1993 |
| 5149603 | Battery pack for medical instruments An improved battery pack is provided for short term battery power operation of a medical instrument such as an infusion pump. The battery pack comprises a substantially closed and compact housing one or more rechargeable batteries inaccessibly encased the... | 09/22/1992 |
| 5126616 | Ultrasonic transducer electrical interface assembly An ultrasonic air-in-line detection system for use in detecting air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed which utilizes an innovative construction used to attach electrical connectors to the ultrasoni... | 06/30/1992 |
| 5113862 | Blood oxygen sensor having leakage compensation An improved blood oxygen sensor apparatus having a special leakage compensation circuit that allows proper initialization of the oxygen sensor regardless or the value of leakage resistance which typically might be present in parallel with the oxygen senso... | 05/19/1992 |
| 5101824 | Rate-responsive pacemaker with circuitry for processing multiple sensor inputs An implantable rate-responsive pacemaker is disclosed wherein two or more sensors indicative of physiological demand are utilized in a fashion designed to realize the advantages of both sensors in a circuit producing a rate command signal which is used to... | 04/07/1992 |
| 5097831 | Rate-responsive pacemaker with circuitry for processing multiple sensor inputs An implantable rate-responsive pacemaker is disclosed wherein two or more sensors indicative of physiological demand are utilized in a fashion designed to realize the advantages of both sensors in a circuit producing a rate command signal which is used to... | 03/24/1992 |
| 5064412 | Ultrasonic air-in-line detector for a medication infusion system An ultrasonic air-in-line detection system for use in detecting air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed which can accurately detect air bubbles in any type of fluid, whether clear or opaque. The syst... | 11/12/1991 |
| 5053747 | Ultrasonic air-in-line detector self-test technique An ultrasonic air-in-line detection system for use in detecting air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed in which a self-test procedure is periodically used to ensure that any faults in the ultrasonic... | 10/01/1991 |
| 5040538 | Pulsed light blood oxygen content sensor system and method of using same A sensor for use with a rate-responsive pacemaker is disclosed which is responsive to blood oxygen content, thereby allowing the cardiac rate of the pacemaker to closely mimic the natural response pattern of the heart to changing physiological need. The s... | 08/20/1991 |
| 5041086 | Clinical configuration of multimode medication infusion system A medication infusion system may be selectively configured to perform an emulation of any one of a plurality of Device Types corresponding to the environment of use. The particular parameters which relate to a given Device Type are set into the system eit... | 08/20/1991 |
| 5009641 | Patient-controlled analgesia security attachment for a medication infusion system A device for use as an attachment for use with a main pump unit containing a prime mover and a control system for controlling the operation of a disposable cassette containing a fluid pump which is mounted on the main pump unit is disclosed which includes... | 04/23/1991 |
| 5006110 | Air-in-line detector infusion system An air-in-line detection system for use in detecting air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed which can accurately detect air bubbles in any type of fluid, whether clear or opaque. The system uses an ... | 04/09/1991 |
| 5000663 | Automatic tubing lock for ultrasonic sensor interface An ultrasonic air-in-line detection system for use in detecting air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed which automatically loads the outlet tubing at the bottom of the cassette into a slot in an ult... | 03/19/1991 |
| 4950235 | Container-side occlusion detection system for a medication infusion system A system for detecting an occlusion in a fluid line is disclosed which can detect occlusions in the upstream or container side of a disposable cassette containing a fluid pump therein. The cassette includes a piston-type pump with inlet and outlet valves,... | 08/21/1990 |
| 4947845 | Method of maximizing catheter longevity in an implantable medication infusion system A method of significantly enhancing the period of time that an implanted intraperitoneal catheter used for the delivery of therapeutic medication will operate without encountering significant blockage by fibrotic tissue is disclosed. By monitoring and mai... | 08/14/1990 |
| 4940399 | Piston cap and boot seal for a medication infusion system A unitary piston cap and boot seal for use in a medication infustion system is disclosed which is mounted on a rigid piston contained in a cylinder disposed in a cassette. The piston cap and boot seal, which are made of a flexible, elastomeric material, e... | 07/10/1990 |
| 4911168 | Method of screening and selecting intraperitoneal medication infusion pump candidates A method of screening potential recipients of an implantable medication infusion system including an implanted intraperitoneal catheter is disclosed which seeks to select only those candidates who will have a high degree of resistance to catheter blockage... | 03/27/1990 |
| 4884065 | Monitor for detecting tube position and air bubbles in tube A device for use to detect air in a fluid line between a medication infusion reservoir such as an IV bottle or bag and an IV injection set or a medication infusion pump is disclosed which utilizes a detector apparatus which clamps onto a segment of tubing... | 11/28/1989 |
| 4878896 | Cassette optical identification apparatus for a medication infusion system A cassette identification system for use with a medication infusion system having disposable cassettes which are mounted onto a main pump unit is disclosed which uses an optical sensor module to read the identifying bits from the cassette. The identificat... | 11/07/1989 |
| 4863425 | Patient-side occlusion detection system for a medication infusion system A system for detecting an occlusion in a fluid line is disclosed which can detect occlusions in the downstream or patient side of a disposable cassette containing a fluid pump thereon. The cassette includes a pressure diaphragm and is for installation ont... | 09/05/1989 |
| 4856523 | Rate-responsive pacemaker with automatic mode switching and/or variable hysteresis rate In a first embodiment, hysteresis is provided in a rate-responsive pacemaker to allow for natural AV synchrony when possible. In the absence of natural SA node signals, the heart is stimulated at a rate determined by the sensing of physiological need. Whe... | 08/15/1989 |
| 4856340 | Pressure diaphragm for a medication infusion system A pressure diaphragm installed in a disposable cassette for use on a main pump unit is disclosed which allows pressure downstream of a fluid pump to be measured with a high degree of accuracy. The pressure diaphragm is located over a raised cylindrical pr... | 08/15/1989 |
| 4850972 | Progammable multiple pump medication infusion system with printer A multiple channel medication infusion system is disclosed which has a plurality of disposable pump cassettes mounted on a single main pump unit, thereby making the system compact and resulting in an economic system. The system has a printer which may be ... | 07/25/1989 |
| 4850817 | Mechanical drive system for a medication infusion system A mechanical drive system for use in driving a disposable cassette containing a reciprocating fluid pump and active valves from a main pump unit is disclosed which utilizes a single power module cam to drive both the reciprocating pump and the valves. By ... | 07/25/1989 |
| 4848346 | Pacemaker connector system A pacemaker connector system for the coaxial heart lead of a bipolar pacemaker consists of two connector block assemblies housing circular springs which circumferentially grip the central and outer terminals of the lead. Protruding ends of the springs are... | 07/18/1989 |
| 4847617 | High speed digital telemetry system for implantable devices A telemetry system for use with implantable medical devices is disclosed which utilizes both in-phase and quadrature data components, and frequency modulates both data components into a single transmitted sinusoidal signal which varies in frequency betwee... | 07/11/1989 |
| 4830005 | Disposable in-package load test element for pacemakers A test device for use with a pacemaker to simulate the load of a heart. The device is designed for telemetering control and includes in its circuit a magnetic reed switch which opens and closes a load circuit in response to a remotely applied magnetic fie... | 05/16/1989 |
| 4827934 | Sensing margin detectors for implantable electromedical devices Circuitry for quantitatively determining the level of processed heart signals relative to actual sensing sensitivity level (threshold) in an implantable pacemaker. The measurement is useful for adjusting the settable threshold, polarity, filtering or ampl... | 05/09/1989 |
| 4825870 | Pacemaker having crosstalk protection feature Programmable timing and logic circuitry is provided to detect crosstalk between paced chambers of the heart and to provide compensation in the event crosstalk is detected. Signals sensed during a prescribed time window early in the cardiac cycle following... | 05/02/1989 |
| 4826480 | Omentum diffusion catheter An implantable catheter for use in delivering insulin or other therapeutic fluids is disclosed which uses a novel terminator design to prevent the growth of fibrotic tissue from obstruction the catheter. The catheter takes advantage of fibrotic encapsulat... | 05/02/1989 |
| 4817605 | Pacemaker system and method for measuring and monitoring cardiac activity and for determining and maintaining capture A system for determining P-wave or R-wave capture in response to pacemaker supplied electrical stimuli. One embodiment includes a conventional bipolar atrial lead having a tip electrode, connected to an atrial pulse generator circuit within an implantable... | 04/04/1989 |
| 4818190 | Cassette loading and latching apparatus for a medication infusion system A medication infusion system having a disposable cassette including a piston pump and active valves for installation on a main pump unit including a mechanical drive system for operating the cassette is disclosed which has a unique system for loading the ... | 04/04/1989 |
| 4815469 | Implantable blood oxygen sensor and method of use An implantable medical sensor (42) determines the oxygen content of blood. The sensor includes a miniaturized hybrid circuit (130) that includes light-emitting diode means (32), phototransistor means (34, 36), and a substrate (110) to which the light-emit... | 03/28/1989 |
| 4814685 | Inductive power converter for use with variable input and output voltages A power converter for use in converting a variable DC input voltage into a variable DC output voltage is disclosed which uses control circuitry on both the input and the output to optimize converter performance. By charging the inductor up nearly to the s... | 03/21/1989 |
| 4809697 | Interactive programming and diagnostic system for use with implantable pacemaker An analyzer-programmer system (30) for use with an implantable medical device, such as a cardiac pacemaker (20). The system facilitates non-invasive communications with the implantable device and makes analysis of the operation of the implantable device e... | 03/07/1989 |
