Drug Heating Cycle Limiter For Injection Device
First Claim
1. A dispensing assembly comprising:
- a dispensing chamber housing having an inner surface and an outer surface, the inner surface partially defining a dispensing chamber for receiving a quantity of a substance;
a temperature control device at least partially surrounding the dispensing chamber housing, the temperature control device for altering a temperature of a substance in the dispensing chamber;
a thermal sensor located near the temperature control device, the thermal sensor for reading a temperature near the temperature control device; and
a controller for controlling the temperature control device such that the substance in the dispensing chamber is not exposed to elevated temperature nor overexposed to heat.
1 Assignment
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Accused Products
Abstract
An injection assembly includes a dispensing chamber housing, a temperature control device, a thermal sensor, a switch, and a controller. The dispensing chamber housing has an inner surface and an outer surface. The inner surface partially defines a dispensing chamber for receiving a quantity of a substance. The temperature control device at least partially surrounds the dispensing chamber housing and alters a temperature of a substance in the dispensing chamber. The thermal sensor is located near the temperature control device and reads a temperature near the temperature control device. The switch is coupled to the temperature control device. The controller controls the temperature control device and the switch such that a first voltage is applied to the temperature control device until the temperature control device reaches a desired temperature, and a second voltage is applied to the temperature control device thereafter to maintain the temperature control device at the desired temperature.
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Citations
20 Claims
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1. A dispensing assembly comprising:
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a dispensing chamber housing having an inner surface and an outer surface, the inner surface partially defining a dispensing chamber for receiving a quantity of a substance; a temperature control device at least partially surrounding the dispensing chamber housing, the temperature control device for altering a temperature of a substance in the dispensing chamber; a thermal sensor located near the temperature control device, the thermal sensor for reading a temperature near the temperature control device; and a controller for controlling the temperature control device such that the substance in the dispensing chamber is not exposed to elevated temperature nor overexposed to heat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An injection assembly comprising:
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a dispensing chamber housing having an inner surface and an outer surface, the inner surface partially defining a dispensing chamber for receiving a quantity of a substance; a temperature control device at least partially surrounding the dispensing chamber housing, the temperature control device for altering a temperature of a substance in the dispensing chamber; a thermal sensor located near the temperature control device, the thermal sensor for reading a temperature near the temperature control device; a switch coupled to the temperature control device; and a controller for controlling the temperature control device; wherein the controller controls the switch such that a first voltage is applied to the temperature control device until the temperature control device reaches a desired temperature, and a second voltage is applied to the temperature control device thereafter to maintain the temperature control device at the desired temperature. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of operating a dispensing assembly comprising:
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checking a count of a number of times a temperature control device has been activated; if the count does not exceed a preset number, incrementing a counter; applying a first voltage across a temperature control device to bring the temperature control device to a desired temperature; after the temperature control device reaches the desired temperature, applying a second voltage across the temperature control device to maintain the temperature control device at the desired temperature; starting a timer to count the amount of time that the temperature control device is activated; and if the amount of time that the temperature control device is activated exceeds a preset amount of time, turning off the temperature control device. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification