Systems, devices, and methods for analyte monitoring

Patent metadata

Field	Value
Publication number	US-2023301561-A1
Application number	US-202318092579-A
Country	US
Kind code	A1
Filing date	Jan 3, 2023
Priority date	Jan 4, 2022
Publication date	Sep 28, 2023
Grant date	—

Abstract

Systems, devices and methods are provided for inserting at least a portion of an in vivo analyte sensor for sensing an analyte level in a bodily fluid of a subject. In particular, disclosed herein are various embodiments of applicators, and components thereof, designed to reduce trauma to tissue of a sensor insertion site and to increase the likelihood of a successful sensor insertion.

First claim

1 - 24 . (canceled)

25 . An insertion apparatus comprising:
a housing; a sheath comprising a distal end configured to be placed on a subject’s skin; a device carrier configured to releasably retain a sensor control device; the sensor control device comprising a sensor; a guide configured to support at least a portion of the sensor; and a spring configured to retract the guide; wherein the housing is configured to move between a proximal position and a distal position relative to the sheath, and to advance the device carrier, the sensor control device, and the guide in a distal direction towards the subject’s skin, wherein the sensor comprises a sharp tip portion configured to pierce the subject’s skin without the use of a sharp or a needle, and wherein the guide is configured to retract towards a retracted position.

26 . The apparatus of claim 25 , wherein at least a portion of the guide extends through a portion of the device carrier.

27 . The apparatus of claim 25 , wherein the device carrier comprises a guide locating ring, and wherein one end of the guide is received by the guide locating ring.

28 . The apparatus of claim 25 , wherein the guide further comprises a plurality of supporting walls, and wherein the plurality of supporting walls support the at least a portion of the sensor.

29 . The apparatus of claim 28 , wherein the plurality of supporting walls comprises three supporting walls.

30 . The apparatus of claim 25 , wherein the guide further comprises a sensor support channel disposed in a distal portion of the guide, wherein the sensor channel comprises a distal end that does not extend beyond the distal portion of the guide.

31 . The apparatus of claim 30 , wherein advancement of the device carrier, the sensor control device, and the guide in the distal direction causes a distal portion of the guide to contact the subject’s skin.

32 . The apparatus of claim 31 , wherein advancement of the device carrier, the sensor control device, and the guide in the distal direction further causes the sensor control device to contact the subject’s skin.

33 . The apparatus of claim 31 , wherein the contact between the guide and the subject’s skin causes a skin deformation and creates a counterforce against the guide in a proximal direction.

34 . The apparatus of claim 25 , wherein the spring is a retraction spring, and wherein the retraction spring is in a semi-compressed state when the housing is in the proximal position.

35 . The apparatus of claim 34 , wherein the retraction spring is advanced in the distal direction when the housing is moved from the proximal position to the distal position.

36 . The apparatus of claim 25 , wherein the spring is a retraction spring, wherein the retraction spring is configured to expand in response to a deflection of a spring retention element.

37 . The apparatus of claim 25 , wherein the guide further comprises a proximal portion having a conical surface, and wherein at least one end of the spring is received by the proximal portion of the guide.

38 . The apparatus of claim 25 , wherein the spring is a retraction spring, and wherein the apparatus further comprises an insertion spring.

39 . The apparatus of claim 38 , wherein the insertion spring is in a compressed state when the housing is in the proximal position.

40 . The apparatus of claim 25 , wherein the device carrier comprises one or more deflectable arms.

41 . The apparatus of claim 40 , wherein the one or more deflectable arms are configured to retain the spring in a compressed or partially compressed state.

42 . The apparatus of claim 25 , wherein the sensor is an in vivo analyte sensor configured to measure an analyte level in a bodily fluid of the subject, and wherein the analyte sensor comprises a sensor tail having a V-shaped tip portion.

43 - 63 . (canceled)

Assignees

• Abbott Diabetes Care Inc

Inventors

• Rao Vivek S
• Simmons Matthew
• Mitchell Steven T

Classifications

• A61B5/14546 Primary

  for measuring analytes not otherwise provided for, e.g. ions, cytochromes · CPC title

• A61B5/14503

  invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors (A61B5/1459, A61B5/1464, A61B5/1473, A61B5/1482, A61B5/14865 take precedence) · CPC title

• A61B5/6848

  Needles · CPC title

• A61B5/14532 Primary

  for measuring glucose, e.g. by tissue impedance measurement · CPC title