Focused sterilization and sterilized sub-assemblies for analyte monitoring systems

Patent metadata

Field	Value
Publication number	US-11331010-B2
Application number	US-202017112700-A
Country	US
Kind code	B2
Filing date	Dec 4, 2020
Priority date	Jun 7, 2018
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A system includes a sensor applicator, a sensor control device arranged within the sensor applicator and including an electronics housing and a sensor extending from a bottom of the electronics housing, and a cap coupled to one of the sensor applicator and the sensor control device, wherein the cap is removable prior to deploying the sensor control device from the sensor applicator.

First claim

What is claimed is:

1. An assembly for delivery of a glucose sensor comprising:
a sensor control device including:
an electronics housing comprising:
a shell having an upper surface with a first aperture defined therein,
a mount mated to the shell and having a second aperture aligned with the first aperture;
a seal overmolded onto the mount at the second aperture, the seal comprising a first seal element overmolded onto a pedestal protruding from an inner surface of the mount;

a circuit board disposed within the electronics housing and comprising
a plurality of electronics modules including a Bluetooth antenna;

a glucose sensor coupled with the circuit board and configured to measure a glucose level; and
an adhesive patch attached to the underside of the mount and configured to secure the sensor control device on a user's skin.

2. The assembly of claim 1 , wherein the electronics housing further includes a plurality of carrier grip features along an outer periphery of the electronics housing.

3. The assembly of claim 1 , further comprising an adhesive to secure the shell to the mount.

4. The assembly of claim 3 , wherein the adhesive isolates an interior of the electronics housing from outside contamination.

5. The assembly of claim 1 , wherein the seal further comprises a second seal element interconnected with the first seal element and overmolded onto an underside of the mount.

6. The assembly of claim 5 , further comprising an applicator including:
a housing;
a sheath coupled to the housing to engage the user's skin at a target monitoring location;
a sharp carrier coupled to a sharp extending through the first aperture and the second aperture, the sharp configured to penetrate the user's skin to position a part of the glucose sensor in contact with interstitial fluid of the user;
a sensor carrier to hold the sensor control device within the applicator;
a spring biasing the sharp carrier to move upward within the housing; and
an applicator cap configured to be coupled to the housing to seal an interior of the applicator.

7. The assembly of claim 6 , wherein the glucose sensor comprises:
a tail portion extending through the second aperture and configured to monitor the glucose level;
a flag portion having a planar surface including a plurality of electrical contacts configured to couple with the circuit board; and
a neck portion interconnecting the tail portion and the flag portion.

8. The assembly of claim 7 , wherein the plurality of electrical contacts on the flag portion include a carbon impregnated polymer.

9. The assembly of claim 7 , wherein the applicator further comprises:
a sharp hub carrying a sharp and sealingly engaging the first seal element; and
a sensor cap removably coupled to the sharp hub at the underside of the mount and sealingly engaging the second seal element,
wherein the sensor cap defines an inner chamber configured to receive the tail and the sharp.

10. The assembly of claim 9 , wherein the sharp hub provides a mating member extending past the underside of the mount and the sensor cap is removably coupled to the mating member.

11. The assembly of claim 9 , further comprising one or more pockets defined on a underside of the mount at the second aperture, and one or more projections defined on an end of the sensor cap and receivable within the one or more pockets when the sensor cap is coupled to the sharp hub.

12. The assembly of claim 6 , wherein the sensor carrier includes one or more carrier arms engaged with the sharp carrier to maintain the sharp carrier in position, and wherein the spring is biasing the sharp carrier to move upward within the housing when the one or more carrier arms disengage from the sharp carrier.

13. The assembly of claim 6 , wherein the sensor carrier includes one or more flexible arms configured to hold the sensor control device within the applicator.

14. The assembly of claim 6 , wherein the applicator cap includes a seal on a proximal end.

15. The assembly of claim 14 , wherein the seal occludes a plurality of vents on the proximal end of the applicator cap.

16. The assembly of claim 6 , wherein the sheath is collapsible to allow the sensor control device to advance into engagement with the user's skin.

17. The assembly of claim 6 , wherein the sharp carrier and the sharp are configured to be automatically retracted after the housing is advanced towards the target monitoring location.

18. The assembly of claim 6 , wherein the sharp includes a hollow portion configured to receive at least a portion of the glucose sensor.

19. The assembly of claim 6 , wherein the sharp includes a non-circular cross-section.

20. The assembly of claim 6 , wherein the sharp is beveled.

21. The assembly of claim 5 , wherein at least one of the first and second seal elements define at least a portion of the second aperture.

22. The assembly of claim 1 , further comprising a collar positioned within the electronics housing and defining a central aperture configured to receive and sealingly engage the first seal element in a radial direction.

23. The assembly of claim 22 , further comprising a channel defined on the inner surface of the mount and circumscribing the pedestal, an annular lip defined on an underside of the collar and matable with the channel, and an adhesive provided in the channel to secure and seal the collar to the mount at the channel.

24. The assembly of claim 23 , further comprising a groove defined through the annular lip to accommodate a portion of the sensor extending laterally within the mount, wherein the adhesive seals about the sensor at the groove.

25. The assembly of claim 22 , further comprising a collar channel defined on an upper surface of the collar, an annular ridge defined on an inner surface of the shell and matable with the collar channel, and an adhesive provided in the collar channel to secure and seal the shell to the collar.

26. The assembly of claim 1 , wherein the first seal element extends at least partially through the first aperture when the shell is coupled to the mount.

Assignees

• Abbott Diabetes Care Inc

Inventors

• Pace Louis
• Rao Vivek S
• Mitchell Steven T
• Robinson Peter G
• Voit Peter M
• Simmons Matthew

Classifications

• A61L2103/15

  Laboratory, medical or dentistry appliances, e.g. catheters or sharps · CPC title

• A61B2560/0406

  specially shaped apparatus housings · CPC title

• A61B2560/04

  Constructional details of apparatus · CPC title

• A61M2205/195

  by the needle tip shape · CPC title

• A61B17/34

  Trocars; Puncturing needles · CPC title