AUTOMATIC SYRINGE PUMPS FOR DRUG AND FLUID DELIVERY
First Claim
1. An automatic syringe pump, comprising:
- a user interface comprising a syringe holder;
a mechanical power subsystem comprising a spring;
a mechanical power transfer subsystem; and
a timing subsystem comprising a ratchet and two pawl arrangement.
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Accused Products
Abstract
An automatic syringe pump is disclosed that includes at least four subsystems: mechanical power, electronic timing, mechanical power transfer, and user interface subsystems. In some embodiments, an occlusion detection subsystem is also present. The mechanical power subsystem'"'"'s main includes a constant force spring capable of storing the energy needed to reliable depressed several different sizes of a syringe. The electronic timing subsystem may include components including a ratchet, pawls, flippers, stepper motor, and microcontroller. These components are used together to regulated the release of the energy stored in the constant force spring. The mechanical power transfer subsystem may include components including a rack and pinion which translates the rotational motion of the drive shaft from the constant force spring into linear motion to depress the syringe. Finally, the user interface subsystem may include components including the microcontroller, Arduino backpack, and syringe tray.
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Citations
22 Claims
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1. An automatic syringe pump, comprising:
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a user interface comprising a syringe holder; a mechanical power subsystem comprising a spring; a mechanical power transfer subsystem; and a timing subsystem comprising a ratchet and two pawl arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for depressing a syringe plunger, comprising:
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applying force to a driveshaft using a spring; rotating a pinion gear via the powered drive shaft such that the pinion gear moves along a rack; and moving a depressor wall in response to the motion of the pinion gear along the rack, such that the depressor wall depresses a plunger of a syringe. - View Dependent Claims (15, 16)
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17. An automatic syringe pump, comprising:
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a mechanical power supply comprising a constant force spring; an electronic timing system comprising a microcontroller, a ratchet, and two pawls, and a stepper motor; a mechanical power transfer system comprising rails, a rack, a pinion, and a depressor cage; and a user interface comprising an LCD in communication with the microcontroller and a syringe tray. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification