NONINVASIVE DETECTION OF A PHYSIOLOGIC PARAMETER WITH A PROBE
First Claim
1. A device for contacting a sensing site within a patient'"'"'s body to determine a physiologic parameter of the patient, comprising:
- a probe body having a top covered portion comprising a material that is substantially impermeable and a bottom portion having a perimeter structured to be positioned against the tissue surface, said perimeter defining a recess within said probe body;
said probe body and said perimeter structured to prevent application of excessive pressure to the sensing site to allow for substantially undisturbed blood flow in the tissue; and
a sensor housed within the recess, the sensor responsive to the physiologic parameter,wherein upon placement of the probe body against the sensing site said impermeable top portion and said perimeter are structured to create a covered, isolated measurement area within the recess that prevents the physiologic parameter from dissipating from the measurement area.
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Accused Products
Abstract
The invention provides a device for contacting a surface of a patient'"'"'s body to determine a physiologic parameter in a measurement region of a tissue of the patient. The device typically comprises a sensor responsive to the physiologic parameter and a probe housing the sensor. The probe is constructed to allow the sensor to be secured at a sensing site adjacent to the measurement region, without disturbing the blood flow within the measurement region of the tissue. The device may also include a means for reducing interference in the sensing area. Preferably, the device further comprises an indicating means operably connected to the sensor for indicating an analyte quantity and/or concentration associated with the physiologic parameter.
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Citations
56 Claims
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1. A device for contacting a sensing site within a patient'"'"'s body to determine a physiologic parameter of the patient, comprising:
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a probe body having a top covered portion comprising a material that is substantially impermeable and a bottom portion having a perimeter structured to be positioned against the tissue surface, said perimeter defining a recess within said probe body;
said probe body and said perimeter structured to prevent application of excessive pressure to the sensing site to allow for substantially undisturbed blood flow in the tissue; anda sensor housed within the recess, the sensor responsive to the physiologic parameter, wherein upon placement of the probe body against the sensing site said impermeable top portion and said perimeter are structured to create a covered, isolated measurement area within the recess that prevents the physiologic parameter from dissipating from the measurement area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 32, 33, 34, 35, 36, 37, 39, 41, 42)
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- 12. (canceled)
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15. (canceled)
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38. (canceled)
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40. (canceled)
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43. (canceled)
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44. A method for determining a physiologic parameter of a patient, the method comprising:
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(a) providing a probe having a probe body including a top impermeable portion and a bottom portion having a perimeter structured to be positioned against the tissue surface, said perimeter defining a recess within said probe body;
said probe body and said perimeter structured to prevent application of excessive pressure to a sensing site on a patient; and
a sensor housed within the recess, the sensor responsive to the physiologic parameter;(b) placing the probe on the sensing site without substantially disturbing blood flow within the tissue such that the impermeable top portion and the perimeter of the bottom portion define an isolated, covered measurement region that prevents analyte from dissipating from the measurement region; and (c) providing a device for deriving an assessment of the response of the sensor to the physiologic parameter defined by the concentration of the physiologic parameter present in the measurement region. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification