Controllable drug delivery system and method of use
A drug delivery system is disclosed that includes a drug delivery device having a reservoir, a delivery cannula having a proximal end in fluid communication with the reservoir and a distal end to be received within a patient, and one or more controllable elements. The drug delivery system may further include one or more sensors coupled to the drug delivery device, and a controller coupled to the one or more sensors and the one or more controllable elements. The controller may be configured to use the one or more sensors to determine a condition or an operational state of the drug delivery device. Furthermore, the controller may be configured to control the controllable element based on the condition or the operational state of the drug delivery device and/or identity information stored in a memory onboard the device. A method for use with a drug delivery device is also disclosed.
1. A drug delivery device comprising:
a reservoir;
a delivery member having a proximal end connected or configured to be connected in fluid communication with the reservoir and a distal end configured for insertion into a patient;
a housing having an opening, the distal end of the delivery member being configured to extend through the opening in an operative state;
an adhesive for removably coupling the housing to skin of the patient;
a removable cover covering at least a portion of the adhesive;
a controllable element;
a patient contact sensor; and
a controller coupled to the controllable element and the patient contact sensor, the controller being programmed to:
(a) determine if the at least a portion of the adhesive has been exposed,
(b) determine if the drug delivery device is in contact with the patient, and
(c) subsequent to or simultaneously with (b), output a control signal to the controllable element.
2. The drug delivery device of claim 1 , wherein the opening is formed in an exterior surface of the housing and the adhesive is disposed at the exterior surface of the housing.
3. The drug delivery device of claim 1 , wherein the removable cover comprises a sheet covering the adhesive and configured for removal by the patient or a user to expose the adhesive.
4. The drug delivery device of claim 3 , wherein the controller is programmed to output the control signal to the controllable element if (b) does not occur within a predefined time period after (a).
5. The drug delivery device of claim 1 , wherein the controller is programmed to repetitively determine at predefined time intervals if the drug delivery device is in contact with the patient.
6. The drug delivery device of claim 1 , wherein the controllable element comprises a communication unit.
7. The drug delivery device of claim 6 , wherein the communication unit, in response to the control signal, wirelessly transmits a report to an external computing device.
8. The drug delivery device of claim 6 , wherein the controller is programmed to determine (a) if drug delivery is complete and (b) if the drug delivery device has been removed from contact with the patient and, if (a) and (b) are determined to exist, control the communication unit to transmit a report.
9. The drug delivery device of claim 1 , wherein the controllable element comprises a lock.
10. The drug delivery device of claim 9 , wherein the control signal changes the lock from a locked state to an unlocked state.
11. The drug delivery device of claim 10 , comprising a plunger configured to expel a drug from the reservoir, wherein the lock, in the locked state, prevents movement of the plunger.
12. The drug delivery device of claim 10 , comprising a trigger button operable by the patient, wherein the lock, in the locked state, prevents operation of the trigger button by the patient.
13. The drug delivery device of claim 1 , wherein the controllable element comprises a circuit having a low-energy state and a high-energy state, and wherein the control signal switches the circuit from the low-energy state to the high-energy state.
14. The drug delivery device of claim 1 , wherein the controllable element comprises a heating element configured to heat a drug in the reservoir or the delivery member in response to the control signal.
15. The drug delivery device of claim 1 , wherein the patient contact sensor comprises at least one of a capacitance sensor, a resistance sensor, and an inductance sensor.
16. The drug delivery device of claim 1 , wherein:
the controllable element includes an output unit, and
the controller is programmed to activate the output unit to alert the patient or a user if the controller determines that the drug delivery device is not in contact with the patient.
17. The drug delivery device of claim 16 , wherein the controller is programmed to activate a lock if the controller determines that the drug delivery device is not in contact with the patient.
18. The drug delivery device of claim 1 , comprising:
a sterile barrier coupled to the housing; and
wherein the at least one condition or at least one operational state of the drug delivery device includes whether the sterile barrier has been removed from the housing by the patient or a user.
19. The drug delivery device of claim 1 , wherein the patient contact sensor is configured to form a closed electrical circuit when positioned in contact with the patient's skin or clothing.
20. The drug delivery device of claim 1 , wherein the controller is programmed to output the control signal to the controllable element only if the controller has determined that at least:
(i) the drug delivery device is in contact with the patient, and
(ii) administration of a drug has been initiated or triggered.
21. The drug delivery device of claim 20 , wherein the controllable element comprises an output unit configured to alert the patient upon receipt of the control signal.