IP Library › Granted Patent US 12,357,345
Granted Patent B2
US 12,357,345 · App. 17/962,308 · Granted Jul 15, 2025

Transcutaneous analyte sensors, applicators therefor, and associated methods

Inventors: Ryan Everett Schoonmaker (Oceanside, CA); Jennifer Blackwell (San Diego, CA); Eric Gobrecht (Madison, WI); Jason Halac (Solana Beach, CA); Randall Scott Koplin (Middleton, WI); Justen Deering England (San Francisco, CA)
Assignee: DexCom, Inc.
A61B17/3468A61B5/0004A61B5/14503A61B5/14532A61B5/6833A61B2017/0023A61B2017/00407A61B2017/00862
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Quick Facts
Patent No.
US 12,357,345
App. No.
17/962,308
Granted
Jul 15, 2025
Kind
B2
Abstract

The present embodiments relate generally to systems and methods for measuring an analyte in a host. More particularly, the present embodiments provide sensor applicators and methods of use with activation that implant the sensor, withdraw the insertion needle, engage the transmitter with the housing, and disengage the applicator from the housing. Systems and methods according to present principles allow for such steps to occur without significant loss of spring force, and without deleterious effects such as seal slingshotting.

Claims (40)

1. An applicator for applying an on-skin sensor assembly to skin of a host, the applicator including an insertion assembly comprising:

an insertion member configured to insert a sensor into the skin of the host;

a first drive assembly having a first amount of stored energy; and

a second drive assembly having a second amount of stored energy,

wherein the first amount of stored energy is wound in a rotational direction about an axis, and wherein the first drive assembly is configured to convert a portion of the first amount of stored energy to a first linear force to drive the insertion member and the second drive assembly in a distal direction to an inserted position, and wherein the first drive assembly is configured to convert another portion of the first amount of stored energy to a second linear force to drive the insertion member and the second drive assembly in a proximal direction from the inserted position,

wherein the second drive assembly is configured to supplement the second linear force in driving the insertion member in the proximal direction from the inserted position, and

wherein the first drive assembly is configured to activate the second drive assembly while driving the insertion member in the proximal direction.

2. The applicator of claim 1 , wherein the first amount of stored energy is a wound torsional spring.

3. The applicator of claim 1 , wherein the second amount of stored energy is a compressed helical spring.

4. The applicator of claim 1 , wherein the insertion assembly further comprises a yoke configured to convert the portion of the first amount of stored energy to the first linear force and the second linear force.

5. The applicator of claim 1 , wherein the insertion assembly further comprises a yoke configured to activate the second amount of stored energy of the second drive assembly.

6. The applicator of claim 1 , wherein the insertion assembly is disposed in an applicator housing operatively coupled to a housing, the housing being configured to receive an electronics unit, and the electronics unit being configured to generate analyte information based on a signal from a sensor.

7. The applicator of claim 4 , wherein the yoke is movable in the distal direction and the proximal direction and movement of the yoke in the proximal direction activates the second amount of stored energy in the second drive assembly driving the insertion member in the proximal direction from the inserted position.

8. The applicator of claim 4 , wherein the yoke is disposed in a scotch yoke mechanism, wherein the scotch yoke mechanism is configured to convert the portion of the first amount of stored energy into the first linear force for driving the insertion member in the distal direction to the inserted position.

9. The applicator of claim 2 ,

wherein the insertion assembly further comprises a yoke disposed in a scotch yoke mechanism configured to convert the portion of the first amount of stored energy to the first linear force and the second linear force, and

wherein the first drive assembly comprises a torsional spring housing enclosing the wound torsional spring and moveable therewith, wherein the torsional spring housing is configured to move the yoke under the first amount of stored energy.

10. The applicator of claim 9 , wherein the torsional spring housing comprises a tab movable within the yoke of the scotch yoke mechanism.

11. The applicator of claim 1 , wherein the insertion assembly comprises a push rod hub and a yoke, wherein the push rod hub is operatively coupled to the insertion member and the yoke, the push rod hub configured for movement in the distal direction to the inserted position and in the proximal direction from the inserted position, and wherein the push rod hub is configured to activate the second amount of stored energy which drives the insertion member in the proximal direction from the inserted position.

12. An applicator for applying an on-skin sensor assembly to skin of a host, the applicator including:

an applicator housing operatively coupled to a housing, the housing being configured to receive an electronics unit, and the electronics unit being configured to generate analyte information based on a signal from a sensor; and

an insertion assembly comprising:

an insertion member configured to insert a sensor into the skin of the host;

a first drive assembly having a first amount of stored energy; and

a second drive assembly having a second amount of stored energy,

wherein the first amount of stored energy is wound in a rotational direction about an axis, and wherein the first drive assembly is configured to convert a portion of the first amount of stored energy to a first linear force to drive the insertion member and the second drive assembly in a distal direction to an inserted position, and wherein the first drive assembly is configured to convert another portion of the first amount of stored energy to a second linear force to drive the insertion member and the second drive assembly in a proximal direction from the inserted position,

wherein the second drive assembly is configured to supplement the second linear force in driving the insertion member in the proximal direction from the inserted position, and

wherein a ratchet member is configured to prevent the first drive assembly from driving the insertion member back in the distal direction.

13. The applicator of claim 12 , wherein the first amount of stored energy is a wound torsional spring.

14. The applicator of claim 12 , wherein the second amount of stored energy is a compressed helical spring.

15. The applicator of claim 12 , wherein the insertion assembly further comprises a yoke configured to convert the portion of the first amount of stored energy to the first linear force and the second linear force.

16. The applicator of claim 12 , wherein the insertion assembly further comprises a yoke configured to activate the second amount of stored energy of the second drive assembly.

17. The applicator of claim 12 , wherein the insertion assembly is disposed in the applicator housing operatively coupled to the housing.

18. The applicator of claim 15 , wherein the yoke is movable in the distal direction and the proximal direction and movement of the yoke in the proximal direction activates the second amount of stored energy in the second drive assembly driving the insertion member in the proximal direction from the inserted position.

19. The applicator of claim 15 , wherein the yoke is disposed in a scotch yoke mechanism, wherein the scotch yoke mechanism is configured to convert the portion of the first amount of stored energy into the first linear force for driving the insertion member in the distal direction to the inserted position.

20. The applicator of claim 13 ,

wherein the insertion assembly further comprises a yoke disposed in a scotch yoke mechanism configured to convert the portion of the first amount of stored energy to the first linear force and the second linear force, and

wherein the first drive assembly comprises a torsional spring housing enclosing the wound torsional spring and moveable therewith, wherein the torsional spring housing is configured to move the yoke.

21. The applicator of claim 20 , wherein the torsional spring housing comprises a tab movable within the yoke of the scotch yoke mechanism.

22. The applicator of claim 12 , wherein the insertion assembly comprises a push rod hub and a yoke, wherein the push rod hub is operatively coupled to the insertion member and the yoke, the push rod hub configured for movement in the distal direction to the inserted position and in the proximal direction from the inserted position, and wherein the push rod hub is configured to activate the second amount of stored energy which drives the insertion member in the proximal direction from the inserted position.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 11, 2022
From: SCHOONMAKER, RYAN EVERETT; BLACKWELL, JENNIFER; DAVIS, CHRISTOPHER M.; DERENZY, DAVID; GOBRECHT, ERIC; HALAC, JASON; HUGHES, JONATHAN; HURST, KATHLEEN SUZANNE; KOPLIN, RANDALL SCOTT; LIEU, PHONG; NEUSER, KYLE; NEWHOUSE, TODD ANDREW; PRYOR, JACK; SIMPSON, PETER C.; WELLS, MARIA NOEL BROWN; ENGLAND, JUSTEN DEERING; MAH, STEFANIE LYNN; BARBOD, LEONARD DARIUS; ALLEN, JILLIAN K.; ESTES, MICHAEL J.; PUPA, PHILIP THOMAS; GOLDSMITH, TIMOTHY JOSEPH; KELLER, KYLE TINNELL
To: DEXCOM, INC.
Reel/Frame 061931/0650 →
Continuity (4)
Continuation 16784198 · Feb 6, 2020
Continuation 15298721 · Oct 20, 2016
Provisional Application 62244520 · Oct 21, 2015
Related Publication 20230032816A1 · Feb 2, 2023
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