Transcutaneous analyte sensors, applicators therefor, and associated methods
First Claim
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1. An applicator for applying an on-skin sensor assembly to skin of a host, the applicator comprising:
- an applicator housing operatively coupled to a disposable housing, the disposable 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;
an insertion assembly comprising an insertion member, the insertion member being configured to insert the sensor into the skin of the host;
a first drive assembly containing a first amount of stored energy, the first drive assembly being configured to drive the insertion member in a distal direction during a first phase and in a proximal direction during a second phase; and
a second drive assembly containing a second amount of stored energy, the second drive assembly being configured to drive the insertion member in the proximal direction,wherein the first drive assembly is configured to activate the second drive assembly while driving the insertion member in the proximal direction during the second phase.
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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.
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Citations
27 Claims
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1. An applicator for applying an on-skin sensor assembly to skin of a host, the applicator comprising:
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an applicator housing operatively coupled to a disposable housing, the disposable 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; an insertion assembly comprising an insertion member, the insertion member being configured to insert the sensor into the skin of the host; a first drive assembly containing a first amount of stored energy, the first drive assembly being configured to drive the insertion member in a distal direction during a first phase and in a proximal direction during a second phase; and a second drive assembly containing a second amount of stored energy, the second drive assembly being configured to drive the insertion member in the proximal direction, wherein the first drive assembly is configured to activate the second drive assembly while driving the insertion member in the proximal direction during the second phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of applying an on-skin sensor assembly to skin of a host, the method comprising:
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providing an assembly comprising an applicator housing operatively coupled to a disposable housing, an insertion assembly comprising an insertion member, a first drive assembly containing a first amount of stored energy, and a second drive assembly containing a second amount of stored energy; and activating a trigger of the assembly, wherein activating the trigger causes the first drive assembly to drive the insertion member in a distal direction during a first phase, wherein a sensor is inserted into the skin of the host, the first drive assembly to drive the insertion member in a proximal direction during a second phase, wherein the first drive assembly activates the second drive assembly while driving the insertion member in the proximal direction during the second phase, and the second drive assembly to drive the insertion member in the proximal direction during the second phase. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification