Electrosurgical instrument with time limit circuit

• US 9,192,430 B2
• Filed: 05/01/2009
• Issued: 11/24/2015
• Est. Priority Date: 05/01/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Rachlin, Thomas, Willoughby, Aaron, Sharp, Robert, Totte, Brian, Payne, Jeffrey D., Pinon, Jaime
• Primary Examiner(s): GRAY, PHILLIP A
• Application Number:
  US12/434,382
• Publication Number:
  US 20100280511A1
• Time in Patent Office: 2,398 Days
• Field of Search: 606 27- 34, 606 41- 42, 607101-105
• US Class Current: 1/1
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2017/2945 Curved jaws
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/00345 Vascular system
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/00619 Welding
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/1432 curved

Abstract

An electrosurgical instrument includes a housing having a treatment portion attached thereto. The treatment portion is adapted to connect to an electrosurgical generator that supplies energy to the electrosurgical instrument. An activation element is included and is disposed in electrical communication with the electrosurgical generator and the treatment portion. The activation element is selectively actuatable to supply energy from the electrosurgical generator to the treatment portion. A time-out device is coupled to the housing and is configured to prevent re-use of the electrosurgical instrument after a pre-determined time limit.

Claims

1. An electrosurgical instrument comprising:

a connector configured to releasably connect to an electrosurgical generator;

a housing adapted to be connected to an electrosurgical generator by the connector and having a treatment portion attached thereto, the treatment portion adapted to connect, through the connector, to an electrosurgical generator that supplies energy thereto;

an activation element disposed in one of the connector or the housing, the activation element adapted for electrical communication with an electrosurgical generator through the connector and in electrical communication with the treatment portion, the activation element being selectively actuatable to supply energy from an electrosurgical generator to the treatment portion; and

a time-out device disposed within the housing, the time-out device controlling a flow of electrosurgical energy supplied from an electrosurgical generator through the time-out device and preventing re-use of the electrosurgical instrument after expiration of a pre-determined time limit by disabling activation of the activation element while the activation element receives energy from an electrosurgical generator.

2. The electrosurgical instrument according to claim 1, wherein the time-out device includes a timing circuit adapted for electrical communication with an electrosurgical generator, the timing circuit being initiateable upon initial activation of the electrosurgical instrument and being configured to disable the electrosurgical instrument from future use after a pre-determined time limit.

3. The electrosurgical instrument according to claim 2, wherein the timing circuit further includes:

a timing activator that includes of at least one of a timing pin, electrically insulative cover and a battery sleeve,

wherein the timing circuit is initiated upon removal of the timing activator from the electrosurgical instrument.

4. The electrosurgical instrument according to claim 2, wherein the timing circuit prevents activation of an electrosurgical generator after expiration of the pre-determined time limit.

5. The electrosurgical instrument according to claim 2, wherein the timing circuit prevents activation of the activation element after expiration of the pre-determined time limit.

6. The electrosurgical instrument according to claim 1, wherein the time-out device includes at least one of a mechanical lockout, an optical lockout or an electrical lockout.

7. The electrosurgical instrument according to claim 1, wherein the time-out device includes a mechanical lockout that decays when exposed to at least one of ambient air, temperature and fluid.

8. The electrosurgical instrument according to claim 1, wherein the time-out device includes an indicator that appears after expiration of the predetermined time limit thereby indicating that the electrosurgical instrument is inoperable.

9. The electrosurgical instrument according to claim 8, wherein the indicator includes at least one of a color-code, an indicia or a bar code.

10. An electrosurgical instrument, comprising:

a connector adapted to releasably connect to an electrosurgical generator;

a housing adapted to be coupled to an electrosurgical generator by the connector and having a treatment portion attached thereto, the treatment portion adapted to connect, through the connector, to an electrosurgical generator that supplies energy thereto;

an activation element adapted for electrical communication with an electrosurgical generator through the connector and in electrical communication with the treatment portion, the activation element being selectively actuatable to supply energy from an electrosurgical generator to the treatment portion; and

a time-out device disposed within one of the connector or the housing, the time-out device controlling a flow of electrosurgical energy supplied from an electrosurgical generator through the time-out device and preventing re-use of the electrosurgical instrument after expiration of a pre-determined time limit by disabling activation of the activation element while the activation element receives energy from an electrosurgical generator.

11. The electrosurgical instrument according to claim 10, wherein the time-out device includes at least one of a mechanical lockout, an optical lockout or an electrical lockout.

12. The electrosurgical instrument according to claim 10, wherein the time-out device includes a mechanical lockout that decays when exposed to at least one of ambient air, temperature and fluid.

13. The electrosurgical instrument according to claim 10, wherein the time-out device includes an indicator that appears after the pre-determined time limit has expired thereby indicating that the electrosurgical instrument is inoperable.

14. The electrosurgical instrument according to claim 13, wherein the indicator includes at least one of a color-code, an indicia or a bar code.

15. The electrosurgical instrument according to claim 14, wherein the indicator is adapted to be read by an electrosurgical generator.

16. An electrosurgical instrument, comprising:

a connector configured to releasably connect to an electrosurgical generator;

a housing adapted to be coupled to an electrosurgical generator by the connector and having a treatment portion attached thereto, the treatment portion adapted to connect, through the connector, to an electrosurgical generator that supplies energy thereto;

a device activation and use limiting circuit disposed in one of the connector or the housing including;

a control relay controlling a flow of electrosurgical energy supplied from an electrosurgical generator through the control relay, the control relay including a timer circuit configured to deactivate the control relay after expiration of a pre-determined time limit and to prevent the flow of electrosurgical energy supplied from an electrosurgical generator through the control relay to the treatment portion while the control relay receives electrosurgical energy supplied from the electrosurgical generator; and

an activation circuit coupled to the control relay, the activation circuit configured to receive electrosurgical energy transferred from the control relay.

17. The electrosurgical instrument according to claim 16, wherein the activation circuit further includes:

an activation switch configured to indicate activation of the treatment portion.

18. The electrosurgical instrument according to claim 16, wherein the timer circuit further includes:

a timer power supply;

a timing device configured to determine whether the pre-determined time limit has been exceeded; and

a timer enable switch configured to connect the timer power supply to the timing device,

wherein the electrosurgical instrument is made inoperable if the pre-determined time limit has been exceeded.

19. The electrosurgical instrument according to claim 18, wherein the timer enable switch, when activated, cannot be deactivated.

20. The electrosurgical instrument according to claim 19, wherein the timer enable switch further includes:

a removal pull tab configured to enable the timer enable switch when removed therefrom.

21. The electrosurgical instrument according to claim 19, wherein the timing device includes an off-timer.

22. The electrosurgical instrument according to claim 19, wherein the timing device includes a microcontroller.

23. The electrosurgical instrument according to claim 18, wherein the timer power supply is a battery.