Clockwork driven hypodermic syringe
First Claim
1. A clockwork device adapted for driving a syringe, wherein said syringe includes an elongated container for fluid and a plunger extending outwardly from the container and slideable therein, said clockwork device comprising:
- a housing,a clockwork mechanism having an escapement controlled gear train mounted within the housing adjacent to the plunger in an extended condition,a syringe driving mechanism adapted to be coupled to said clockwork mechanism and including a winding shaft with a mainspring mounted thereto and a pinion thereon engaging a rack adapted to drive the syringe plunger, andmeans coupling the clockwork mechanism to the syringe driving mechanism to drive the plunger at a predetermined rate controlled by the clockwork mechanism comprising a spring clutch mounted about the winding shaft to permit free rotation in one direction while restraining mainspring torque in the opposite direction.
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Accused Products
Abstract
A clockwork device for driving a hypodermic syringe comprises a device for holding a syringe and automatically injecting predetermined amounts of fluid into a patient at a controlled rate over a period of time. The device comprises a clockwork mechanism, a syringe coupled thereto and an exterior housing containing the various components. The clockwork mechanism is mounted parallel to the overall length of the syringe within the housing to minimize the size of the device. A two-way releasable clutch is utilized to connect the clockwork mechanism to the syringe driving mechanism for ease of retracting or advancing the driving mechanism.
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Citations
6 Claims
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1. A clockwork device adapted for driving a syringe, wherein said syringe includes an elongated container for fluid and a plunger extending outwardly from the container and slideable therein, said clockwork device comprising:
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a housing, a clockwork mechanism having an escapement controlled gear train mounted within the housing adjacent to the plunger in an extended condition, a syringe driving mechanism adapted to be coupled to said clockwork mechanism and including a winding shaft with a mainspring mounted thereto and a pinion thereon engaging a rack adapted to drive the syringe plunger, and means coupling the clockwork mechanism to the syringe driving mechanism to drive the plunger at a predetermined rate controlled by the clockwork mechanism comprising a spring clutch mounted about the winding shaft to permit free rotation in one direction while restraining mainspring torque in the opposite direction. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification