Sensor device covered with foam membrane
First Claim
Patent Images
1. A sensor device for sensing a characteristic of a bodily fluid, said device comprising:
- means for sensing said characteristic;
a receptacle containing said sensing means, said receptacle having a bodily fluid admitting membrane; and
a polymeric open-celled foam between 10 microns and 2,000 microns in thickness covering a substantial portion of said admitting membrane, said membrane having pits extending at least partially into said foam and at most 100 microns beyond said foam.
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Abstract
An implant is provided with an open-celled silicone elastomer foam outer layer. The implant may be formed by compressively deforming beads mixed with liquid elastomer in a mold containing a preformed support structure. The elastomer is cured and the beads dissolved out. Infusion and sensor catheters covered with the foam provide improved transport rates and faster response.
447 Citations
7 Claims
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1. A sensor device for sensing a characteristic of a bodily fluid, said device comprising:
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means for sensing said characteristic; a receptacle containing said sensing means, said receptacle having a bodily fluid admitting membrane; and a polymeric open-celled foam between 10 microns and 2,000 microns in thickness covering a substantial portion of said admitting membrane, said membrane having pits extending at least partially into said foam and at most 100 microns beyond said foam. - View Dependent Claims (2, 3, 4, 7)
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5. A sensor device for sensing a characteristic of a bodily fluid, said device comprising:
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means for sensing said characteristic; a receptacle containing said sensing means, said receptacle having a bodily fluid admitting portion having a membrane having orifices; and a polymeric open-celled foam between 10 microns and 2,000 microns in thickness covering a substantial portion of said admitting portion, wherein said membrane has pits extending into said foam, said pits containing said orifices. - View Dependent Claims (6)
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Specification