Daniel L Cooper

US Patent:

47524499, Jun 21, 1988

Filed:

Sep 30, 1985

Appl. No.:

6/781845

Inventors:

Jacqueline J. Jackson - Denver CO
Daniel Cooper - Parker CO

Assignee:

Hemotec, Inc. - Englewood CO

International Classification:

G01N 3386

US Classification:

422 73

Abstract:

Coagulation is detected in a fluid sample such as blood which has been inserted into a cartridge and operated on by an actuator mechanism. The cartridge may be of either of two types: a plunger sensor cartridge wherein a plunger assembly is reciprocated in a predetermined manner within the fluid sample and the descent of the plunger assembly is sensed to determine coagulation conditions, and a gas flow cartridge wherein gas is passed through the fluid sample to transmit liquid in bubbles and the accumulation of the coagulating liquid from the bubbles is sensed to detect coagulation. An actuator mechanism operates with either one or both types of cartridges to create the conditions under which coagulation can be detected and to sense the coagulation detection conditions. The actuator mechanism reciprocates the plunger assembly and forces gas through the liquid sample to create the bubbles.

US Patent:

39540987, May 4, 1976

Filed:

Jan 31, 1975

Appl. No.:

5/546043

Inventors:

Donald E. Dick - Boulder CO
Daniel Cooper - Denver CO
Ronald E. Hileman - Boulder CO

International Classification:

A61B 1000

US Classification:

128 205Z

Abstract:

A scan converter storage surface is divided into image spaces corresponding to different points in the heart cycle. Ultrasound echoes from heart structures are plotted in the image spaces by means of special x, y sweeps which are offset to the image spaces by timing circuitry. Separate delay and spacing counters allow the first image to be stored at one interval after detection of the ECG R-wave and successive images to be stored at a another uniform interval. An ECG trace is stored in the first image space with cursors indicating the selected image timing. The scan converter is read out to a TV display. During image build-up, the read and write modes alternate. If desired, the TV sweeps to the scan converter may be attenuated and offset to display a single stored image. Images displayed in sequence provide animation. A self test circuit substitutes a fake ECG and writes bars in the scan converter image spaces using TV sweeps for the scan sweeps.

US Patent:

45992193, Jul 8, 1986

Filed:

Oct 15, 1982

Appl. No.:

6/434718

Inventors:

Daniel Cooper - Parker CO
Jacqueline J. Jackson - Denver CO

Assignee:

Hemotec, Inc. - Englewood CO

International Classification:

G01N 3386

US Classification:

422 61

Abstract:

Coagulation is detected in a fluid sample contained in either a gas flow cartridge or a plunger sensor cartridge, either one of which may be inserted in an actuator mechanism which has the capability of acting on either type of cartridge. Coagulation is detected in the gas flow cartridge by optically sensing the accumulation of coagulating liquid in a foam member at the top of the reaction chamber. In the plunger sensor cartridge, a plunger assembly is raised and released to descend through the sample of liquid in the bottom of the reaction chamber. The plunger assembly descends more slowly upon an increase in the viscosity of the fluid sample due to coagulation. Both cartridges include a lower reagent chamber, an upper reaction chamber, and means initially sealing and thereafter communicating the contents from the reagent chamber to the reaction chamber. The actuator mechanism includes means for delivering the flow of gas to the gas flow cartridge and means for reciprocating the plunger assembly in the plunger sensor cartridge.

US Patent:

46631275, May 5, 1987

Filed:

Oct 15, 1982

Appl. No.:

6/434569

Inventors:

Jacqueline J. Jackson - Denver CO
Anatoly Dvornichenko - Denver CO
Daniel Cooper - Parker CO

Assignee:

Hemotec, Inc. - Denver CO

International Classification:

G01N 3386

US Classification:

422 58

Abstract:

A gas flow cartridge in which to conduct analytical coagulation tests on a sample of fluid such as blood includes a tube-like member and a resilient flexible membrane having a slit formed therethrough to divide the tube-like member into an upper reaction chamber in which the test takes place and into a lower reagent chamber which initially contains reagent to be mixed with the sample of liquid upon which the test is to be conducted. The contents of the reagent chamber are forced through the slit in the resilient flexible membrane due to the flexing of the membrane around the slit when pressure is applied. Once the reagent is in the reaction chamber with the sample of fluid, a flow of gas is forced upward through the slit in the membrane during the analytical test.

US Patent:

54877539, Jan 30, 1996

Filed:

Mar 16, 1995

Appl. No.:

8/405507

Inventors:

Dean J. MacCarter - Englewood CO
Don Hopper - Denver CO
Daniel Cooper - Lakewood CO
Roger Hassell - Golden CO

Assignee:

Telectronics Pacing Systems, Inc. - Englewood CO

International Classification:

A61N 1365

US Classification:

607017

Abstract:

A rate responsive pacemaker measures a metabolic demand parameter of a patient. The metabolic demand parameter is converted to a corresponding metabolic indicated rate which determines the pulse rate of the pacer. The converting is based on a profile dependent on the predicted anaerobic threshold level of the patient, as well as his or her age and physical fitness.

US Patent:

45335192, Aug 6, 1985

Filed:

Jul 20, 1983

Appl. No.:

6/515914

Inventors:

Robert F. Baugh - Aurora CO
Walter J. Braun - Englewood CO
Daniel Cooper - Parker CO

Assignee:

HemoTec, Inc. - Englewood CO

International Classification:

G01N 3316

US Classification:

422 73

Abstract:

A gas flow cartridge in which to conduct a coagulation-related test uses an elongated pin member movably positioned within a communication opening which separates a reagent chamber from a reaction chamber. A first portion of the pin member has an operative configuration for sealing the communication opening when the first portion is positioned in the communication opening. A second longitudinally displaced portion of the pin member opens the communication opening to further communication therethrough upon longitudinal movement of the pin member. At the commencement of an analytical test, a plug member is moved upwardly to contact the pin member and move the first portion out of the communication opening and the second portion into the communication opening. The upward movement of the lower plug member forces the contents of the reagent chamber through the opened communication opening and into the reaction chamber. A pointed needle-like member pierces a membrane of the lower plug member and injects gas into the cartridge.

US Patent:

42145902, Jul 29, 1980

Filed:

Nov 28, 1977

Appl. No.:

5/855210

Inventors:

Charles M. Patnoi - Golden CO
Daniel Cooper - Denver CO
Robert D. Zellers - Lakewood CO

Assignee:

International Medical Corporation - Englewood CO

International Classification:

A61B 504

US Classification:

128710

Abstract:

A method and apparatus for processing and displaying ECG waveforms and the like is comprised of a playback circuit to demodulate FM and digital signals for transcription on an endless paper loop in a series of straight lines or traces. A paper loop drive unit is capable of handling and advancing the endless loop continuously past one or more scribing pens which are offset in succession to produce a predetermined number of traces in parallel rows across the length of the loop with time segment markings closely correlated with the information recorded.

US Patent:

56266227, May 6, 1997

Filed:

Sep 21, 1994

Appl. No.:

8/309760

Inventors:

Daniel Cooper - Lakewood CO

Assignee:

Telectronics Pacing Systems, Inc. - Englewood CO

International Classification:

A61N 1368

US Classification:

607 18

Abstract:

An electronic pacemaker generating pacing signals includes both a metabolic rate responsive sensor monitoring a physiological parameter and an activity rate responsive sensor monitoring movement of a patient's body during exercise. The measurements from each of the sensors are used to develop a corresponding rate signal and the two signals are combined to generate a dual sensor rate used to determine the timing of the pacing signals. The physiological parameter may be for example minute volume variation while the body movement may be monitored for example by using an accelerometer. The activity rate responsive sensor output is preferably used as an indication of a transition of a level of exercise, when a faster change in the pacing rate is desirable.