Self-cleaning sensor surfaces for implantable sensor systems
First Claim
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1. An implantable sensor system comprising:
- a sensor which is situated in a housing, the housing having a measurement region which is permeable for parameters detectable by the implantable sensor at an implantation site,wherein the measurement region has an erodible protective coating which is permeable for the parameters to be detected by the sensor,wherein the erodible protective coating is electrically erodible, wherein portions of the erodible protective coating are removed due to electrical interactions at the implantation site,wherein, as the erodible protective coating erodes, protein depositing on the erodible protective coating is carried away to reduce or delay encapsulation, andwherein layers of the erodible protective coating separate from a surface of the sensor in a controlled manner in defined time periods.
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Abstract
Implantable sensor system including a sensor which is situated in a housing, the housing having a measurement region which is permeable for the parameters to be detected by the sensor, wherein the measurement region has an erodible protective coating which is permeable for the parameters to be detected by the sensor.
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Citations
15 Claims
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1. An implantable sensor system comprising:
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a sensor which is situated in a housing, the housing having a measurement region which is permeable for parameters detectable by the implantable sensor at an implantation site, wherein the measurement region has an erodible protective coating which is permeable for the parameters to be detected by the sensor, wherein the erodible protective coating is electrically erodible, wherein portions of the erodible protective coating are removed due to electrical interactions at the implantation site, wherein, as the erodible protective coating erodes, protein depositing on the erodible protective coating is carried away to reduce or delay encapsulation, and wherein layers of the erodible protective coating separate from a surface of the sensor in a controlled manner in defined time periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable sensor system comprising:
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a sensor which is situated in a housing, the housing having a measurement region which is permeable for parameters detectable by the implantable sensor, wherein the measurement region has an erodible protective coating which is permeable for the parameters to be detected by the sensor, wherein the implantable sensor system includes a metallic surface which is designed as a cathode, and wherein the erodible protective coating comprises at least one metallic layer, wherein the at least one metallic layer is designed as a sacrificial anode, wherein the at least one metallic layer of the erodible protective coating comprises an electrically conductive material which is less noble than the metallic surface of the cathode, and wherein portions of the sacrificial anode of the erodible protective coating are removed due to electrical interactions at the implantation site, wherein, as the sacrificial anode of the erodible protective coating is removed, protein depositing on the erodible protective coating is carried away to reduce or delay encapsulation, and wherein layers of the erodible protective coating separate from a surface of the sensor in a controlled manner in defined time periods. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification