Transcutaneous analyte sensor
First Claim
1. A device for measuring an analyte concentration, the device comprising:
- a sensor having a substantially circular cross section, the sensor configured to be inserted into a host, wherein the sensor comprises;
an in vivo portion, the in vivo portion forms a tissue piercing element at a distal end of the in vivo portion, the tissue piercing element configured to pierce a skin of the host,at least one electrode, anda biodegradable material surrounding at least a portion of the sensor, wherein the biodegradable material degrades after insertion into the host;
a membrane covering at least a portion of the at least one electrode, wherein the biodegradable material is configured to protect the membrane from damage during insertion of the sensor;
an on-skin unit configured to support the sensor on an exterior surface of the host'"'"'s skin, wherein the on-skin unit comprises sensor electronics;
a spring configured to insert the sensor into the host, the spring urging the sensor toward the skin of the host; and
a retainer configured to hold the spring in a tensioned state and release the spring when the retainer is removed, causing the spring to move toward the skin of the host.
1 Assignment
0 Petitions
Accused Products
Abstract
A transcutaneous sensor device configured for continuously measuring analyte concentrations in a host is provided. In some embodiments, the transcutaneous sensor device 100 comprises an in vivo portion 160 configured for insertion under the skin 180 of the host and an ex vivo portion 170 configured to remain above the surface of the skin 180 of the host after sensor insertion of the in vivo portion. The in vivo portion may comprise a tissue piercing element 110 configured for piercing the skin 180 of the host and a sensor body 120 comprising a material or support member 130 that provides sufficient column strength to allow the sensor body to be pushable in a host tissue without substantial buckling. The ex vivo portion 170 may be configured to comprise (or operably connect to) a sensor electronics unit and may comprise a mounting unit 150. Also described here are various configurations of the sensor body and the tissue piercing element that may be used to protect the membrane of the sensor body.
205 Citations
19 Claims
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1. A device for measuring an analyte concentration, the device comprising:
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a sensor having a substantially circular cross section, the sensor configured to be inserted into a host, wherein the sensor comprises; an in vivo portion, the in vivo portion forms a tissue piercing element at a distal end of the in vivo portion, the tissue piercing element configured to pierce a skin of the host, at least one electrode, and a biodegradable material surrounding at least a portion of the sensor, wherein the biodegradable material degrades after insertion into the host; a membrane covering at least a portion of the at least one electrode, wherein the biodegradable material is configured to protect the membrane from damage during insertion of the sensor; an on-skin unit configured to support the sensor on an exterior surface of the host'"'"'s skin, wherein the on-skin unit comprises sensor electronics; a spring configured to insert the sensor into the host, the spring urging the sensor toward the skin of the host; and a retainer configured to hold the spring in a tensioned state and release the spring when the retainer is removed, causing the spring to move toward the skin of the host. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification