Remote control system and method

• US 9,956,430 B2
• Filed: 01/25/2013
• Issued: 05/01/2018
• Est. Priority Date: 01/25/2012
• Status: Active Grant

• Current Assignee: Varian Medical Systems Incorporated (Siemens AG)
• Original Assignee: Varian Medical Systems Incorporated (Siemens AG)
• Inventors: Dalla Ricca, Paolo, Greenberg, Kevin
• Primary Examiner(s): Maskulinski, Michael
• Assistant Examiner(s): Amoroso, Anthony J
• Application Number:
  US14/373,036
• Publication Number:
  US 20140371512A1
• Time in Patent Office: 1,922 Days
• CPC Class Codes: A61N 2005/1074 Details of the control system, e.g. user interfaces
• CPC Class Codes: A61N 2005/109 Neutrons
• CPC Class Codes: A61N 2005/1094 Shielding, protecting against radiation
• CPC Class Codes: A61N 5/1048 Monitoring, verifying, controlling systems and methods
• CPC Class Codes: A61N 5/1064 for adjusting radiation treatment in response to monitoring
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A remote control system is configured to support communication between a first environment having a first neutron radiation level and a second environment having a second neutron radiation level includes a first computing device and a second computing device. The first computing device is configured to control a treatment system in the first environment. The second computing device is configured to issue commands in the second environment for the treatment system. The first computing device is further configured to determine whether to enable or disable a function supported by the treatment system, determine whether there is pending time-sensitive data to transmit, and periodically transmit a first radiation therapy data collected in the first environment and a first interrupt to the second computing device in a servo loop.

Claims

1. A system configured to support communication between a first environment having a first neutron radiation level and a second environment having a second neutron radiation level, comprising:

a first computing device configured to control a treatment system in the first environment, wherein the treatment system collects a first radiation therapy time-sensitive data and a second radiation therapy non-time-sensitive data; and

a second computing device configured to issue a command in the second environment for the treatment system, wherein the first computing device is further configured to;

enable or disable a function supported by the treatment system based on the command from the second computing device,

in response to the first radiation therapy time-sensitive data and the second radiation therapy non-time-sensitive data, assert a first interrupt or a first interlock based on the first radiation therapy time-sensitive data and transmit the first radiation therapy time-sensitive data with the first interrupt or the first interlock and a higher priority than the second radiation therapy non-time-sensitive data in a servo loop,

retransmit the first radiation therapy time-sensitive data to the second computing device with the higher priority when the second computing device fails to receive expected information within a particular time, or when the first computing device receives a first monitored status of a first storage area in the first computing device, and

retransmit the second radiation therapy non-time-sensitive data to the second computing device.

2. The system of claim 1, wherein the first computing device asserts the first interlock by setting interlock registers that the second computing device inspects, and the interlock registers are associated with at least a current loop routed to the system.

3. The system of claim 2, wherein the first computing device is further configured to receive an override command to open the current loop in response to the transmission of the first radiation therapy time-sensitive data and the first interlock.

4. The system of claim 3, in response to the override command or the control bit, wherein the first computing device is further configured to enable or disable the function.

5. The system of claim 1, wherein the first computing device is further configured to place the first radiation therapy time-sensitive data and the first interrupt in a time-sensitive packet before transmitting the packet.

6. The system of claim 1, wherein the first computing device is further configured to send a time-sensitive packet with an interrupt to request a resend of the command, if the first computing device fails to receive the command within a predetermined amount of time.

7. The system of claim 1, wherein the first environment is in close proximity with the second environment.

8. The system of claim 1, wherein the first computing device is further configured to retrieve the first radiation therapy time-sensitive data and the first interrupt or the first interlock from the first storage area, which corresponds to a first predetermined set of addresses designated to store time-sensitive data.

9. The system of claim 1, wherein a mirrored architecture is supported between the first computing device and the second computing device.

10. The system of claim 9, wherein the first computing device is further configured to periodically transmit data stored in a second storage area, which corresponds to a second predetermined set of addresses designated to store non-time-sensitive data in the second computing device.

11. The system of claim 10, wherein the first computing device is configured to retransmit the non-time-sensitive data to the second computing device when the first computing device receives a second monitored status of the second storage area.

12. The system of claim 1, wherein the first computing device is further configured to receive a retransmission request from the second computing device for the pending time-sensitive data if the second computing device fails to receive the pending time-sensitive data or the first interrupt within the particular time.

13. A system configured to support communication between a first environment having a first neutron radiation level and a second environment having a second neutron radiation level, comprising:

a first computing device configured to control a treatment system in the first environment; and

a second computing device configured to issue commands in the second environment for the treatment system, wherein

the second computing device is further configured to;

prior to responding to a first interrupt asserted by the first computing device based on a radiation therapy time-sensitive data, determine whether to issue a first command to the first computing device to enable or disable a first function supported by the treatment system in response to a first interlock asserted by the first computing device,

if there is pending time-sensitive data to transmit, transmit the pending time-sensitive data with a higher priority than non-time-sensitive data, and

perform a function in response to the first interrupt and based on the radiation therapy time-sensitive data from the first computing device,

wherein the second computing device is further configured to;

retransmit the pending time-sensitive data to the first computing device with the higher priority when the first computing device fails to receive expected information within a particular time, or when the second computing device receives a first monitored status of a first storage area in the second computing device; and

retransmit the non-time-sensitive data to the first computing device.

14. The system of claim 13, wherein the second computing device is further configured to determine whether to issue the first command based on whether the first interlock is received from the first computing device within a predetermined period of time.

15. The system of claim 14, wherein the second computing device is further configured to inspect a predetermined register for the first interlock to determine whether the first interlock is received.

16. The system of claim 13, wherein the second computing device is further configured to transition to a safe state after the second computing device fails to receive the first interlock within a predetermined period of time.

17. The system of claim 13, wherein the first environment is in close proximity with the second environment.

18. The system of claim 13, wherein the second computing device is further configured to retrieve the time-sensitive data from the first storage area, which corresponds to a first predetermined set of addresses designed to store time-sensitive data in the second computing device.

19. The system of claim 13, wherein a mirrored architecture is supported between the first computing device and the second computing device.

20. The system of claim 19, wherein the second computing device is further configured to periodically transmit data stored in a second storage area, which corresponds to a second predetermined set of addresses designated to store non-time-sensitive data in the second computing device.

21. The system of claim 20, wherein the second computing device is configured to retransmit the non-time-sensitive data to the first computing device when the second computing device receives a second monitored status of the second storage area.

22. The system of claim 13, wherein the second computing device is further configured to receive a retransmission request from the first computing device for the pending time-sensitive data if the first computing device fails to receive the pending time-sensitive data or the first interrupt within the particular time.