1
Thomas G Hacker, David J Franta: Cassette for tonometric calibration. Minnesota Mining and Manufacturing Company, James D Christoff, Robert W Sprague, Stephen W Bauer, December 7, 1999: US05997818 (169 worldwide citation)

A cassette for tonometric calibration especially useful for systems that measure one or more blood parameters includes a cassette having an elongated fluid chamber. In one embodiment of the invention, the fluid chamber includes an expansion region that reduces the likelihood of bubble coalescence of ...


2
James G Bentsen, Stanley O Heinemann, Gary W Lee, Thomas G Hacker, N Alan Abul Haj, Roxanne E Abul Haj: Blood parameter measurement device. Terumo Cardiovascular Systems Corporation, Burns Doane Swecker & Mathis, December 28, 1999: US06009339 (156 worldwide citation)

A blood parameter measurement device especially useful for surgical procedures includes a compact housing with a light source, light detector and signal converter contained within the housing. In use, the device is releasably coupled to a cassette that can be either used as an in-line cell in series ...


3
Thomas G Hacker, John L Gehrich, Ronald G Holder: Cassette for measuring parameters of blood. Terumo Cardiovascular Systems Corporation, Burns Doane Swecker & Mathis, August 8, 2000: US06101406 (118 worldwide citation)

A cassette useful for measuring one or more parameters of blood in, for example, a cardiopulmonary bypass circuit has a convex coupling for releasable connection with a mating, concave coupling of a measuring device. The coupling of the cassette includes flexible leg portions that can be moved towar ...


4
John L Gehrich, Thomas P Maxwell, Thomas G Hacker: Intravascular blood gas sensing system. Minnesota Mining and Manufactoring Company, Donald M Sell, Walter N Kirn, Dale E Hulse, February 5, 1991: US04989606 (88 worldwide citation)

An assembly useful in conjunction with a signal transmission means for the measurement of a compositional parameter of the blood of a patient is disclosed. This assembly comprises a housing adapted and sized to be located outside the body of a patient and having a fluid flow passage therethrough int ...


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Thomas P Maxwell, Thomas G Hacker, John W Moers: Pump and calibration system. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Dale E Hulse, March 10, 1992: US05094820 (56 worldwide citation)

An apparatus comprising a housing, a curved wall surface on the housing and a tube compressor carried by the housing. A compressible tube, which defines at least a portion of the passage, is positioned between the curved wall surface and the tube compressor. The tube compressor is mounted on the hou ...


7
Thomas P Maxwell, Thomas G Hacker: Blood parameter measurement system. Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Dale E Hulse, August 28, 1990: US04951669 (53 worldwide citation)

A parameter of blood is sensed with a system which includes a catheter and a sensor and a volume oscillator element. The catheter has a lumen extending therethrough, a proximal end, a distal end and an opening, adapted to be placed in the blood vessel of a patient. The sensor senses a blood paramete ...


8
Thomas P Maxwell, Thomas G Hacker: Seal construction for pump apparatus. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Dale E Hulse, December 15, 1992: US05171029 (46 worldwide citation)

An endless path calibration system comprising a sensor cassette having a flow-through passage and at least one sensor to be calibrated, a chamber coupled to the sensor cassette to define an endless path and a sterile calibration liquid in the endless path. A gas injection passage for injecting gas i ...


9
Ted H Gourley, Thomas P Maxwell, Thomas G Hacker, William W Miller, Masao Yafuso: Sensor and method for sensing the concentration of a component in a medium. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Dale E Hulse, June 9, 1992: US05120510 (33 worldwide citation)

An apparatus for sensing the concentration of a component such as oxygen in a medium such as blood. The apparatus includes an elongated signal transmitter and a sensing element at one end thereof. A substantially rigid sleeve is secured around such end to provide a pocket for the sensing element.


10
Ted H Gourley, Thomas P Maxwell, Thomas G Hacker, William W Miller, Masao Yafuso: Sensor and method for sensing the concentration of a component in a medium. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Dale E Hulse, April 9, 1991: US05006314 (32 worldwide citation)

An apparatus for sensing the concentration of a component such as oxygen in a medium such as blood. The apparatus includes an elongated signal transmitter and a sensing element at one end thereof. A substantially rigid sleeve is secured around such end to provide a pocket for the sensing element.