DISPOSABLE COMPONENTS FOR REUSABLE PHYSIOLOGICAL SENSOR
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Accused Products
Abstract
A sensor cartridge according to embodiments of the disclosure is capable of being used with a non-invasive physiological sensor. Certain embodiments of the sensor cartridge protect the sensor from damage, such as damage due to repeated use, reduce the need for sensor sanitization, or both. Further, embodiments of the sensor cartridge are positionable on the user before insertion in the sensor and allow for improved alignment of the treatment site with the sensor. In addition, the sensor cartridge of certain embodiments of the disclosure can be configured to allow a single sensor to comfortably accommodate treatment sites of various sizes such as for both adult and pediatric applications.
82 Citations
12 Claims
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1. (canceled)
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2. A disposable sterile barrier that interposes a material impermeable to infectious biological substances between a tissue site and surfaces of a sensor configured to grasp the tissue site, the sensor configured to transmit optical radiation into the tissue site and to generate a signal responsive to the optical radiation after attenuation by pulsatile blood flow within the tissue site, the disposable sterile barrier comprising:
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an optically transparent material that is substantially impermeable to infectious biological substances; a first portion of the material formed such that the first portion can be interposed between a tissue site and a first surface of a reusable optical sensor proximate an emitter of the sensor; and a second portion of the material formed such that the second portion can be interposed between the tissue site and a second surface of the sensor proximate a detector of the sensor. - View Dependent Claims (3, 4, 5, 6)
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7. An optical sensing method of non-invasively measuring the constituents of pulsatile blood flow within a tissue site without substantial risk nosocomial infection by direct contact between a sensor and the tissue site, the optical sensing method comprising:
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providing a reusable optical sensor having an emitter disposed within a first housing and a detector disposed within a second housing, the emitter and detector in communication with a sensor cable, the first and second housings configured to be urged against opposite sides of a tissue site upon application of the sensor to the tissue site, the emitter configured to transmit optical radiation having one or more predetermined wavelengths into the tissue site and the detector configured to receive the optical radiation after attenuation by the tissue site, the sensor configured to generate one or more signals indicative of the attenuated radiation, the one or more signals transmitted via the sensor cable to a monitor configured to process the one or more signals to determine one or more physiological parameters of patient; and applying a barrier so as to make physiological measurements without direct contact between the tissue site and the sensor, the barrier interposed between the tissue site and the first housing and interposed between the tissue site and the second housing upon application of the tissue site to the sensor, the barrier comprising material substantially impermeable to infectious substances and substantially transparent so as not to substantially distort the physiological measurements. - View Dependent Claims (8, 9, 10, 11)
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12. A disposable sterile barrier comprising:
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an elongate tube comprising a cavity, an open end and a closed end, the open end comprising an opening large enough to accommodate a reusable optical sensor, the cavity sized to fully enclose the reusable optical sensor and at least a portion of a sensor cable extending from the optical sensor, the elongate tube comprising a material which is substantially optically transparent and substantially impermeable to infectious biological substances; and a fastener disposed proximate the open end of the elongate tube and configured to seal the open end of the elongate tube around the sensor cable.
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Specification