Disposable infusion device with snap action actuation
First Claim
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1. A wearable infusion device comprising:
- a reservoir that holds a liquid medicament;
an outlet port that delivers the liquid medicament to a patient;
a pump that displaces a volume of the liquid medicament to the outlet port when actuated, wherein the pump is configured to be actuated multiple times; and
a control that actuates the pump, the control comprising a snap action actuator, wherein the snap action actuator comprises a bendable member, an abutment member that initially engages and holds the bendable member under compression, a first cam surface that, when translated in a first direction, raises the bendable member above the abutment member to release the bendable member, a second cam surface that, when translated in a second direction, opposite the first direction, raises the bendable member above the abutment member and returns the bendable member into engagement with the abutment member under compression, and, a spring that forces the second cam surface to translate in the second direction.
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Abstract
A wearable infusion device comprises a reservoir that holds a liquid medicament, an outlet port that delivers the liquid medicament to a patient, a pump that displaces a volume of the liquid medicament to the outlet port when actuated, and a control that actuates the pump. The control comprises a snap action actuator.
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Citations
11 Claims
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1. A wearable infusion device comprising:
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a reservoir that holds a liquid medicament; an outlet port that delivers the liquid medicament to a patient; a pump that displaces a volume of the liquid medicament to the outlet port when actuated, wherein the pump is configured to be actuated multiple times; and a control that actuates the pump, the control comprising a snap action actuator, wherein the snap action actuator comprises a bendable member, an abutment member that initially engages and holds the bendable member under compression, a first cam surface that, when translated in a first direction, raises the bendable member above the abutment member to release the bendable member, a second cam surface that, when translated in a second direction, opposite the first direction, raises the bendable member above the abutment member and returns the bendable member into engagement with the abutment member under compression, and, a spring that forces the second cam surface to translate in the second direction.
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2. A wearable infusion device comprising:
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a reservoir that holds a liquid medicament; an outlet port that delivers the liquid medicament to a patient; a pump that displaces a volume of the liquid medicament to the outlet port when actuated, wherein the pump is configured to be actuated multiple times; and a control that actuates the pump, the control comprising a snap action actuator, wherein the snap action actuator comprises a bendable member, an abutment member that initially engages and holds the bendable member under compression, a first cam surface that, when translated in a direction towards the bendable member, raises the bendable member above the abutment member to release the bendable member, a second cam surface that, when translated in a direction away from the bendable member, raises the bendable member above the abutment member and returns the bendable member into engagement with the abutment member under compression, and a spring that forces the second cam surface to translate in the direction away from the bendable member.
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3. A wearable infusion device comprising:
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a reservoir that holds a liquid medicament; an outlet port that delivers the liquid medicament to a patient; a pump that displaces a fixed volume of the liquid medicament to the outlet port when actuated, wherein the pump is configured to be actuated multiple times; and a control that actuates the pump, the control comprising a displaceable member having a beginning and an end of travel and a snap action actuator that abruptly actuates the pump to displace the fixed volume of liquid medicament upon the displaceable member reaching the end of travel. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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Specification