Rotary motor based transdermal injection device
First Claim
1. An apparatus for injectate delivery comprising:
- a cartridge containing a volume of an injectate and an exit port;
a linear actuator configured for delivery of the injectate from the exit port of the cartridge, the linear actuator including a linkage;
a rotary motor mechanically coupled to the linkage; and
a controller coupled to the rotary motor;
wherein the controller is configured to control a linear motion of the actuator in response to a control signal by controlling an electrical input supplied to the motor in a first interval during which the rotary motor is stationary;
a second interval immediately following the first interval during which the controller accelerates the rotary motor from stationary to a first speed selected to create a jet of the injectate from the cartridge with a velocity at least sufficient to pierce human tissue to a subcutaneous depth;
a third interval during which the controller maintains the rotary motor at or above the first speed; and
a fourth interval during which the controller decelerates the rotary motor to a second speed selected to deliver the volume of the injectate at the subcutaneous depth;
wherein the rotary motor provides sufficient power to reach the first speed in not more than three rotations.
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Accused Products
Abstract
An apparatus for injectate delivery includes a cartridge, a linear actuator, a rotary motor mechanically coupled the actuator, and a controller coupled to the motor. The controller controls a linear motion of the actuator by controlling an electrical input supplied to the motor in a first interval during which the motor is stationary with the linear actuator engaged with the cartridge to displace an injectate in the cartridge, a second interval following the first interval during which the controller accelerates the motor from stationary to a first speed selected to create a jet of the injectate from the cartridge with a velocity sufficient to pierce human tissue to a subcutaneous depth, a third interval during which the controller maintains the motor at or above the first speed, and a fourth interval during which the controller decelerates the motor to a second speed to deliver the injectate at the subcutaneous depth.
15 Citations
20 Claims
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1. An apparatus for injectate delivery comprising:
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a cartridge containing a volume of an injectate and an exit port; a linear actuator configured for delivery of the injectate from the exit port of the cartridge, the linear actuator including a linkage; a rotary motor mechanically coupled to the linkage; and a controller coupled to the rotary motor; wherein the controller is configured to control a linear motion of the actuator in response to a control signal by controlling an electrical input supplied to the motor in a first interval during which the rotary motor is stationary; a second interval immediately following the first interval during which the controller accelerates the rotary motor from stationary to a first speed selected to create a jet of the injectate from the cartridge with a velocity at least sufficient to pierce human tissue to a subcutaneous depth; a third interval during which the controller maintains the rotary motor at or above the first speed; and a fourth interval during which the controller decelerates the rotary motor to a second speed selected to deliver the volume of the injectate at the subcutaneous depth; wherein the rotary motor provides sufficient power to reach the first speed in not more than three rotations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification