Tissue penetration device
AssigneeSanofi-Aventis Deutschland GmbH
InventorsDominique M. Freeman, Don Alden
Life of this patent
Estimating the term…
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.
Claims28
A method of injecting an agent into the tissue of a patient at a known predetermined depth, comprising:
- (a) driving an elongate injection shaft having an outlet port configured to dispense an agent at a controllable time toward the patient's target tissue;
- (b) advancing the elongate injection shaft into the target tissue from the contact point over a displacement equal to the sum of an elastic recoil displacement value for the target tissue, the distance between a distal extremity of the elongate injection shaft and the outlet port, and the desired tissue depth of injection for agent deposition;
- (c) injecting the agent;
- and
- (d) accurately delivering the agent to a specific depth within a skin or tissue layer and provide for localized agent delivery.
A method of injecting an agent into the tissue of a patient at a known predetermined depth, comprising:
- (a) driving an elongate injection shaft having an outlet port configured to dispense an agent at a controllable time toward the patient's target tissue;
- (b) determining a contact point between a distal extremity of the elongate injection shaft and the target tissue;
- (c) advancing the elongate injection shaft into the target tissue from the contact point over a displacement equal to the sum of an elastic recoil displacement value for the target tissue, the distance between a distal extremity of the elongate injection shaft and the outlet port, and the desired tissue depth of injection for agent deposition;
- and
- (d) injecting the agent.
A method of injecting an agent into a patient's target tissue at a desired injection depth, comprising:
- (a) driving an elongate injection shaft having an outlet port configured to dispense an agent at a controllable time toward the patient's target tissue;
- (b) advancing the elongate injection shaft into the target tissue from a contact point between the elongate injection shaft and the target tissue over a displacement greater than the desired injection depth to a position of maximum penetration;
- (c) withdrawing the injection shaft in a proximal direction to the desired penetration depth;
- and
- (d) injecting the agent.
Dependencies are inferred from the claim text.