公开(公告)号：US20240136135A1

公开(公告)日：2024-04-25

申请号：US18491276

申请日：2023-10-19

Applicant: INSULET CORPORATION

Inventor： Eli WIEL ,  Daniel BARRETT ,  Nicholas CONTE ,  Jerry WITT

IPC: H01H71/14

CPC classification number: H01H71/145

Abstract: Exemplary embodiments may terminate application of an electric pulse to a shape memory alloy (SMA) element that causes actuation of a medicament pump based on resistance values unlike conventional approaches that rely on a mechanical mechanisms to trigger termination of the application of the electric pulse. The magnitude of the resistance values, the rate of change (RoC) of the resistance values, the temperature of the SMA element, the time that has passed since initial application of the electric pulse to the SMA element, or combinations thereof may be used to trigger the termination of the application of the electric pulse to the SMA element in exemplary embodiments. The monitoring of the resistance of an unactuated SMA element may be used to determine when to initiate and when to terminate application of an electrical pulse to the other SMA element.

公开(公告)号：US20240234066A9

公开(公告)日：2024-07-11

申请号：US18491276

申请日：2023-10-20

Applicant: INSULET CORPORATION

Inventor： Eli WIEL ,  Daniel BARRETT ,  Nicholas CONTE ,  Jerry WITT

IPC: H01H71/14

CPC classification number: H01H71/145

Abstract: Exemplary embodiments may terminate application of an electric pulse to a shape memory alloy (SMA) element that causes actuation of a medicament pump based on resistance values unlike conventional approaches that rely on a mechanical mechanisms to trigger termination of the application of the electric pulse. The magnitude of the resistance values, the rate of change (RoC) of the resistance values, the temperature of the SMA element, the time that has passed since initial application of the electric pulse to the SMA element, or combinations thereof may be used to trigger the termination of the application of the electric pulse to the SMA element in exemplary embodiments. The monitoring of the resistance of an unactuated SMA element may be used to determine when to initiate and when to terminate application of an electrical pulse to the other SMA element.