Method and kit for supplying a fluid to a subcutaneous placement site

A method of supplying a fluid to a placement site, the method comprising the steps of:

• a) mounting a sensor set onto a skin of a user and contacting therewith a placement site, the sensor set including:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• and
• iii) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• and
• b) introducing a fluid through the port of the lumen to the placement site,
• wherein the sensor set further comprises an insertion device operatively coupled to the set and the cannula to facilitate insertion of the cannula to contact the placement site.

A method of supplying a fluid to a placement site, the method comprising the steps of:

• a) mounting a sensor set onto a skin of a user and contacting therewith a placement site, the sensor set including:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• and
• iii) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• and
• b) introducing a fluid through the port of the lumen to the placement site,
• wherein the sensor set further comprises a septum disposed adjacent the at least one port of the cannula, and wherein the fluid is introduced through the septum and the lumen to the placement site.

A method of supplying a fluid to a placement site, the method comprising the steps of:

• a) mounting a sensor set onto a skin of a user and contacting therewith a placement site, the sensor set including:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• and
• iii) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• and
• b) introducing a fluid through the port of the lumen to the placement site,
• wherein the sensor set further comprises an externally extending conduit in fluid communication with the at least one port of the cannula, and wherein the fluid is introduced through the externally extending conduit and the lumen to the placement site.

A method of supplying a fluid to a placement site, the method comprising the steps of:

• a) mounting a sensor set onto a skin of a user and contacting therewith a placement site, the sensor set including:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an externally extending conduit in fluid communication with the at least one port of the cannula;
• and
• iv) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• and
• b) introducing a fluid through the externally extending conduit and the lumen to the placement site.

A method of calibrating a sensor which is placed at a placement site and which is adapted to determine a body characteristic of a user, the method comprising the steps of:

• a) mounting a sensor set onto a skin of a user and contacting therewith a placement site, the sensor set including:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an insertion device operatively coupled to the sensor set and the cannula to facilitate insertion of the cannula to contact the placement site;
• iv) an externally extending conduit in fluid communication with the at least one port of the cannula;
• and
• v) a sensor having a connection portion coupled to the sensor set, and a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine the characteristic of the user at the placement site;
• b) electrically connecting the connection portion of the sensor to a monitor for monitoring the characteristic of the user;
• c) introducing a predetermined quantity of a calibration solution having a known level of the characteristic of the user through the externally extending conduit to the sensor portion of the sensor, whereby a sensor output is generated and detected by the monitor;
• and
• d) calibrating the sensor using the sensor output.

A kit for supplying fluid to a placement site, the kit, in appropriate packaging, comprising:

• a) a sensor set comprising:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an insertion device operatively coupled to the sensor set and the cannula to facilitate insertion of the cannula to contact the placement site;
• iv) an externally extending conduit in fluid communication with the at least one port of the cannula;
• and
• v) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• b) a source of fluid to be supplied to the placement site;
• and
• c) a delivery device by which the fluid is introduced into the externally extending conduit and thence to the placement site.

A kit for supplying a fluid to a placement site, the kit, in appropriate packaging, comprising:

• a) a sensor set comprising:
• i) a base to secure the sensor set to the skin of a user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an externally extending conduit in fluid communication with the at least one port of the cannula;
• and
• iv) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• b) a source of fluid to be supplied to the placement site;
• and
• c) a delivery device by which the fluid is introduced into the externally extending conduit and thence to the placement site.

A kit for calibrating a sensor which is placed at a placement site and which is adapted to determine a body characteristic of a user, the kit, in appropriate packaging, comprising:

• a) a sensor set comprising:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an insertion device operatively coupled to the sensor set and the cannula to facilitate insertion of the cannula to contact the placement site;
• iv) an externally extending conduit in fluid communication with the at least one port of the cannula;
• and
• v) a sensor having a connection portion coupled to the sensor set, and a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine the characteristic of the user at the placement site;
• b) a source of a predetermined quantity of a calibration solution having a known level of the characteristic of the user;
• and
• c) a delivery device by which the predetermined quantity of the calibration solution is introduced into the externally extending conduit and thence to the sensor at the placement site.

A system for supplying fluid to a placement site, the system comprising:

• a) a sensor set comprising:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an insertion device operatively coupled to the sensor set and the cannula to facilitate insertion of the cannula to contact the placement site;
• and
• iv) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• b) a source of fluid to be supplied to the placement site;
• and
• c) a delivery device by which the fluid is introduced into the cannula and thence to the placement site.

A system for calibrating a sensor which is placed at a placement site and which is adapted to determine a body characteristic of a user, the system comprising:

• a) a sensor set comprising:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an insertion device operatively coupled to the sensor set and the cannula to facilitate insertion of the cannula to contact the placement site;
• and
• iv) a sensor having a connection portion coupled to the sensor set, and a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine the characteristic of the user at the placement site;
• b) a source of a predetermined quantity of a calibration solution having a known level of the characteristic of the user;
• and
• c) a delivery device by which the predetermined quantity of the calibration solution is introduced into the cannula and thence to the sensor at the placement site.

A system for supplying fluid to a placement site, the system comprising:

• a) a sensor set comprising:
• b) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an insertion device operatively coupled to the sensor set and the cannula to facilitate insertion of the cannula to contact the placement site;
• iv) an externally extending conduit in fluid communication with the at least one port of the cannula;
• v) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• and
• vi) a membrane disposed over the at least one port in the at least one lumen of the cannula, the membrane permitting passage of at least one agent to be detected by the sensor;
• b) a source of fluid to be supplied to the placement site;
• and
• c) a delivery device by which the fluid is introduced into the externally extending conduit and thence to the placement site.

A method of supplying fluid to a placement site, the method comprising the steps of

• a) mounting a sensor set onto a skin of a user and contacting a placement site with the sensor set, the sensor set including:
• i) a base to secure the sensor set to the skin of the user;
• ii) a cannula coupled to and extending from the base, wherein the cannula has at least one lumen with an end for fluid communication with the placement site, wherein the cannula also has at least one port formed near another end of the lumen opposite the end for fluid communication;
• iii) an insertion device operatively coupled to the sensor set and the cannula to facilitate insertion of the cannula to contact the placement site;
• iv) an externally extending conduit in fluid communication with the at least one port of the cannula;
• v) a sensor having a sensor portion exposed by the at least one port in the at least one lumen of the cannula to determine a body characteristic of the user at the placement site;
• and
• vi) a membrane disposed over the at least one port in the at least one lumen of the cannula, the membrane permitting passage of at least one agent to be detected by the sensor;
• and
• b) introducing a fluid through the externally extending conduit and the lumen to the placement site.