Tissue penetration device

  • US 8,016,774 B2
  • Filed: 12/22/2005
  • Issued: 09/13/2011
  • Est. Priority Date: 06/12/2001
  • Status: Expired due to Fees
First Claim
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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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