Patent ID: 11961615
Assignee: STRYKER CORPORATION
Field: Medical technology (Instruments)
Classification: CPC G  H | IPC G  H

Claim 11:
12. A patient support apparatus comprising:
a frame;
a patient support surface supported on the frame;
a lift adapted to raise and lower the patient support surface;
a first circuit board including a first controller and a first memory, the first controller adapted to store a first set of data in the first memory;
a second circuit board including a second controller and a second memory, the second controller adapted to store a second set of data in the second memory;
a third circuit board including a third controller and a third memory, the third controller adapted to store a third set of data in the third memory; and
wherein the first controller is adapted to send a backup copy of the first set of data to the third circuit board;
the second controller is adapted to send a backup copy of the second set of data to the third circuit board;
the third controller is adapted to store the backup copy of the first set of data and the backup copy of the second set of data in the third memory;
the first set of data includes a first identifier for the first circuit board;
the second set of data includes a second identifier for the second circuit board;
the third set of data includes a third identifier for the third circuit board;
the first controller is adapted to store a first backup copy of the third identifier in the first memory;
the second controller is adapted to store a second backup copy of the third identifier in the second memory;
the first controller, in response to a first triggering condition, is adapted to resend back to the third circuit board the first backup copy of the third identifier stored in the first memory;
the third controller is adapted to compare the resent first backup copy of the third identifier to a third identifier stored in the third memory;
the second controller, in response to a second triggering condition, is adapted to resend back to the third circuit board the second backup copy of the third identifier stored in the second memory,
the third controller is adapted to compare the resent second backup copy of the third identifier to the third identifier stored in the third memory; and if neither the resent first backup copy of the third identifier nor the resent second backup copy of the third identifier match the third identifier stored in the third memory, the third controller is further adapted to conclude that the third circuit board is a replacement of a previously installed third circuit board.