Tissue penetration device
First Claim
Patent Images
1. An agent injection device capable of injecting an agent to a known tissue depth, comprising:
- (a) an injection member having an elongate injection shaft with an outlet port configured to dispense an agent at a controllable time;
(b) a controllable electronic driver coupled to the elongate injection shaft and configured to drive the injection member into target tissue within a limit on injection stroke velocity of the injection member;
(c) a position sensor coupled to the controllable electronic driver, the position sensor configured to detect penetration depth as well as penetration and withdrawal velocities of the injection member;
(d) velocity control system including a feedback loop coupled to the position sensor and a processor in communication with the controllable electronic driver configured to control the injection member'"'"'s penetration depth and penetration and withdrawal velocities to compensate for variations in skin thickness; and
(e) wherein the controllable electronic driver is configured to drive the elongate injection shaft at the injection stroke velocity of up to about 10 m/s.
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Abstract
An agent injection device is provided that is capable of injecting an agent to a known predetermined tissue depth. An injection member has an elongate injection shaft with an outlet port configured to dispense an agent at a controllable time. A controllable driver is coupled to the elongate injection shaft and is configured to drive the injection member into target tissue. A velocity control system is in communication with the controllable driver and is configured to control the velocity of the elongate injection shaft.
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Citations
7 Claims
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1. An agent injection device capable of injecting an agent to a known tissue depth, comprising:
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(a) an injection member having an elongate injection shaft with an outlet port configured to dispense an agent at a controllable time; (b) a controllable electronic driver coupled to the elongate injection shaft and configured to drive the injection member into target tissue within a limit on injection stroke velocity of the injection member; (c) a position sensor coupled to the controllable electronic driver, the position sensor configured to detect penetration depth as well as penetration and withdrawal velocities of the injection member; (d) velocity control system including a feedback loop coupled to the position sensor and a processor in communication with the controllable electronic driver configured to control the injection member'"'"'s penetration depth and penetration and withdrawal velocities to compensate for variations in skin thickness; and (e) wherein the controllable electronic driver is configured to drive the elongate injection shaft at the injection stroke velocity of up to about 10 m/s. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification