Needleless injector
First Claim
Patent Images
1. An injector for injecting a substance into a biological body, comprising:
- a chamber adapted to hold the substance to be injected and an output port in fluid communication with the chamber;
a drive element;
a magnetic force able to cause movement of the drive element; and
an actuator that opposes movement of the drive element and then allows the magnetic force to cause the drive element to move and thereby cause the expulsion of the substance out of the chamber through the output port.
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Abstract
An injector includes a housing having a chamber for holding a liquid formulation of an active principle to be injected into a biological body and an output port in fluid communication with the chamber through which the liquid formulation is injected. A piston is positioned within the housing, and includes an end portion with substantially the same shape as the chamber. A magnetic force draws the piston and housing together to expel the liquid formulation out of the chamber through the output port.
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Citations
17 Claims
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1. An injector for injecting a substance into a biological body, comprising:
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a chamber adapted to hold the substance to be injected and an output port in fluid communication with the chamber; a drive element; a magnetic force able to cause movement of the drive element; and an actuator that opposes movement of the drive element and then allows the magnetic force to cause the drive element to move and thereby cause the expulsion of the substance out of the chamber through the output port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An injector for injecting a substance into a biological body, comprising:
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a chamber adapted to hold the substance to be injected and an output port in fluid communication with the chamber; a drive element; and a permanent magnet providing a magnetic force sufficient to result in a movement of the drive element to expel the substance from the chamber. - View Dependent Claims (14, 15, 16, 17)
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Specification