Introducer assembly and methods of use
A method and apparatus for inserting at least a portion of a sensor into a patient is provided. Simple and easy to use mechanisms are provided that can position the sensor or any other device accurately with minimal complication. The method and apparatus can include an inserter device for use with the sensor. The method and apparatus can be for use in continuous or semi-continuous monitoring systems such as analyte monitoring systems.
1. A method of assembling componentry of an analyte monitoring system, the system comprising an insertion device that comprises a sleeve portion and a body portion movable with respect to the sleeve portion, wherein movement of the body portion causes movement of a first portion of a sensor assembly, the method comprising:
aligning the sleeve portion of the insertion device with a receiving structure, wherein the receiving structure includes a projecting retainer element of a second portion of the sensor assembly;
inserting the sleeve portion of the insertion device into the receiving structure, the insertion device being coupled with the first portion of the sensor assembly during the inserting of the sleeve portion; and
advancing the body portion of the insertion device with respect to the sleeve portion such that a through hole in the first portion of the sensor assembly passes over the projecting retainer element of the second portion of the sensor assembly, the projecting retainer element being in a set position with respect to the receiving structure, wherein, after advancement, the first portion of the sensor assembly and the second portion of the sensor assembly are coupled together.
2. The method of claim 1 , wherein the projecting retainer element is a pin.
3. The method of claim 1 , wherein the projecting retainer element has a groove or an indentation substantially around an outer surface thereof.
4. The method of claim 3 , wherein the advancement comprises advancing the body portion with respect to the sleeve portion such that the through hole in the first portion of the sensor assembly passes over the groove or the indentation of the projecting retainer element.
5. The method of claim 4 , wherein the first portion and the second portion of the sensor assembly are secured to each other once the through hole in the first portion of the sensor assembly passes over the groove or indentation of the projecting retainer element.
6. The method of claim 1 , wherein the receiving structure comprises an inner wall and an outer wall and wherein inserting the sleeve portion into the receiving structure comprises inserting the sleeve portion between the inner wall and the outer wall.
7. The method of claim 1 , wherein the projecting retainer element is at a center of the receiving structure.
8. The method of claim 1 , wherein the receiving structure extends around the projecting retainer element.
9. The method of claim 1 , wherein the receiving structure fixedly retains the sleeve portion after insertion of the sleeve portion into the receiving structure.
10. The method of claim 1 , wherein an edge extends radially outwardly from the receiving structure.
11. The method of claim 10 , further comprising removing the sleeve portion from the receiving structure after advancement of the body portion with respect to the sleeve portion.
12. The method of claim 1 , wherein the body portion is a plunger body portion that is coupled with a sharp introducer, and wherein the advancement of the body portion with respect to the sleeve portion inserts the sharp introducer into a patient's skin.
13. The method of claim 12 , wherein the insertion device comprises a spring, the method further comprising automatically removing the sharp introducer from the sensor assembly with the spring.
14. The method of claim 1 , wherein a handle is coupled with the body portion, and wherein advancing the body portion with respect to the sleeve portion comprises advancing only the body portion within the sleeve portion such that the handle is not advanced within the sleeve portion.
15. The method of claim 1 , wherein the body portion comprises an interior space, and wherein the body portion of the insertion device is advanced with respect to the sleeve portion such that the through hole in the first portion of the sensor assembly passes over the projecting retainer element and such that the projecting retainer element advances into the interior space of the body portion.