Cartridge assembly for electrosurgical devices, electrosurgical unit and methods of use thereof

• US 9,345,541 B2
• Filed: 09/08/2010
• Issued: 05/24/2016
• Est. Priority Date: 09/08/2009
• Status: Active Grant

• Current Assignee: Medtronic Advanced Energy LLC (Medtronic Plc)
• Original Assignee: Medtronic Advanced Energy LLC (Medtronic Plc)
• Inventors: Greeley, Roger D., Conley, Brian M., Flanagan, David J., Gifford, Aaron J., Miller, Steven G., Murakami, Blaine T., Robinson, Thomas P.
• Primary Examiner(s): Stoklosa, Joseph
• Assistant Examiner(s): KIM, EUN HWA
• Application Number:
  US12/877,400
• Publication Number:
  US 20110125146A1
• Time in Patent Office: 2,085 Days
• Field of Search: 606/34, 606/45
• US Class Current: 1/1
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/00589 Coagulation
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/00988 Means for storing information, e.g. calibration constants, or for preventing excessive use, e.g. usage, service life counter
• CPC Class Codes: A61B 2218/002 Irrigation

Abstract

The invention provides a cartridge assembly to couple a tissue treatment device with an electrosurgical unit, with the cartridge assembly operable with a power delivery apparatus and a fluid delivery apparatus of the electrosurgical unit. The invention also provides an electrosurgical unit comprising a power delivery apparatus and a fluid delivery apparatus operable with the cartridge assembly and a system thereof.

Claims

1. A cartridge assembly comprising:

a cartridge member configured to couple a tissue treatment device having a pair of electrodes for treating tissue with an electrosurgical unit including a radio-frequency power delivery apparatus and a fluid delivery apparatus,

the cartridge member having an elongated single piece cartridge body;

wherein a first contact structure and the second contact structure being within the elongated single piece cartridge body;

the first contact structure of the elongatedsigle piece cartridge body configured to couple the radiofrequency power delivery apparatus of the electrosurgical unit with the tissue treatment device and the second contact structure of the elonaated single piece cartridge body configured to couple the fluid delivery apparatus of the electrosurgical unit with the tissue treatment device;

a fluid delivery passage,

wherein the tissue treatment device is configured to deliver fluid using the fluid delivery apparatus and radio-frequency power from the radio-frequency power delivery apparatus for treating tissue, and

wherein the cartridge member is configured to operate with the radio-frequency power delivery apparatus of the electrosurgical unit and the fluid delivery apparatus of the electrosurgical unit.

2. The cartridge assembly of claim 1 wherein the cartridge member is configured to:

engage with a releasable mechanical engagement mechanism of the electrosurgical unit with an interference fit; and

disengage from the electrosurgical unit.

3. The cartridge assembly of claim 1 wherein:

the fluid delivery passage is configured to operate with the fluid delivery apparatus of the electrosurgical unit.

4. The cartridge assembly of claim 3 wherein:

the cartridge member includes a valve in fluid communication with the fluid delivery passage.

5. The cartridge assembly of claim 3

wherein at least a portion of the fluid delivery passage is defined by a plastic tubing located within the elongated single piece cartridge body.

6. The cartridge assembly of claim 5

wherein the at least a portion of the fluid delivery passage is defined by the plastic tubing located within the elongated single piece cartridge body, wherein the plastic tubing is configured to be compressed by the fluid delivery apparatus of the electrosurgical unit, and wherein the elongated single cartridge body includes a surface against which the plastic tubing is to be compressed during an operation of the fluid delivery apparatus.

7. The cartridge assembly of claim 5 wherein:

at least a portion of the plastic tubing is at least one of (i)movable into and out of the elongated single piece cartridge body;

(ii) located in a tubular aperture which extends through the elongated single piece cartridge body; and

(iii) supported in an arcuate shape by the elongated single piece cartridge body.

8. The cartridge assembly of claim 5 wherein:

the plastic tubing is supported on opposing ends by the elongated single piece cartridge body; and

a portion of the elongated single piece cartridge body is within a lumen of the plastic tubing.

9. The cartridge assembly of claim 5 wherein:

at least a portion of the plastic tubing forms an enclosed loop external to the elongated single piece cartridge body, a length of the plastic tubing forming the enclosed loop configured to adjust a size of the loop by moving the length of the plastic tubing in a direction relative to the elongated single piece cartridge body to increase or decrease the size of the loop.

10. The cartridge assembly of claim 1 wherein:

the cartridge member is configured to receive a control signal from the electrosurgical unit, the control signal comprising a signal configured to control a radio-frequency power output of the electrosurgical unit.

11. The cartridge assembly of claim 1 further comprising:

a tangible storage medium included in the cartridge member; and

tissue treatment device information , wherein the tangible storage medium is configured to store the tissue treatment device information, wherein the cartridge member is configured to provide the tissue treatment device information to the electrosurgical unit to control energy delivered to the pair of electrodes.

12. The cartridge assembly of claim 11 wherein:

the tissue treatment device information comprises at least one operating parameter for operating the tissue treatment device.

13. The cartridge assembly of claim 11 wherein:

the tissue treatment device information comprises at least one of a radio-frequency power delivery apparatus setting and a fluid delivery apparatus setting for operating the tissue treatment device.

14. The cartridge assembly of claim 11 wherein:

the tissue treatment device information comprises a plurality of radio-frequency power delivery apparatus settings for operating the tissue treatment device and at least one fluid delivery apparatus setting corresponding to each of the radio-frequency power delivery apparatus settings.

15. The cartridge assembly of claim 11 wherein the tissue treatment device information comprises:

a default setting for operating the tissue treatment device; and

at least one identifier unique to the tissue treatment device.

16. The cartridge assembly of claim 11 wherein:

the tissue treatment device information comprises a fixed time period for operating the tissue treatment device,

wherein a countdown of the fixed time period begins upon a first activation of the tissue treatment device and wherein the tissue treatment device becomes inoperable after the fixed time period expires.

17. The cartridge assembly o claim 1 wherein:

the first contact is an electrical contact connectable with an electrical contact of the electrosurgical unit.

18. An electrosurgical unit for use with a tissue treatment device having a pair of electrodes, the electrosurgical unit comprising:

a docking assembly comprising a radio-frequency power delivery apparatus, a fluid delivery apparatus, and a cartridge receptacle for receiving a cartridge member of a cartridge assembly with a fluid delivery passageway and the tissue treatment device, the cartridge member having an elongated single piece cartridge body;

wherein the fluid delivery passageway of the cartridge assembly is coupled to a receptacle that is within the elongated single piece cartridge body. and a first connection structure is within the elongated single piece cartridge body;

wherein the cartridge receptacle is configured to couple with

     1) the first connection structure of the elongated single piece cartridge body of the cartridge assembly to connect the radio-frequency power delivery apparatus of the docking assembly to the tissue treatment device and

     2) a second connection structure of the cartridge member of the cartridge assembly to connect the fluid delivery apparatus of the docking assembly with the tissue treatment device; and

wherein the docking assembly is further configured to disengage from the elongated single piece cartridge body of the cartridge assembly to disconnect the radio-frequency power delivery apparatus from the first connection structure and the fluid delivery apparatus from the second connection structure.

19. The electrosurgical unit of claim 18 wherein:

the docking assembly is configured to engage the , elongated single piece cartridge body of the cartridge assembly with an interference fit.

20. The electrosurgical unit of claim 18 further comprising:

a releasable mechanical engagement mechanism configured to engage with the elongated single piece cartridge body of the cartridge assembly; and

a releasable positioning mechanism to position the elongated single piece cartridge body of the cartridge assembly.

21. The electrosurgical unit of claim 18 wherein:

the radio-frequency power delivery apparatus is movable to engage with and disengage from the first connection structure of the elongated single piece cartridge body of the cartridge member;

wherein the first connection structure comprises an electrical contact through an aperture of the elongated single piece cartridge body of the cartridge member.

22. The electrosurgical unit of claim 18 wherein:

the fluid delivery apparatus is movable to engage with and disengage from the second contact structure of the elongated single piece cartridge body of the cartridge assembly;

wherein the second connection structure comprises a flexible tube external to the elongated single piece cartridge body of the cartridge assembly.

23. The electrosurqical unit of claim 18 wherein:

the radio-frequency power delivery apparatus and the fluid delivery apparatus are movable to engage with and disengage from the elongated single piece cartridge body of the cartridge assembly.

24. The electrosurgical unit of claim 18 wherein:

the radio-frequency power delivery apparatus and the fluid delivery apparatus are jointly movable to engage with and disengage from the elongated single piece cartridge bocie cartridge assembly.

25. An electrosurgical system comprising:

an electrosurgical unit comprising a radio-frequency power delivery apparatus and a fluid delivery apparatus, the electrosurgical unit having a first connection structure and a second connection structure;

a cartridge assembly comprising a cartridge member and a tissue treatment device, the tissue treatment device having a pair of electrodes for treating tissue and a fluid passageway, wherein the tissue treatment device is configured to deliver fluid using the fluid delivery apparatus and radio-frequency power from the radio-frequency power delivery apparatus;

wherein the first connection structure is configured to couple the radio-frequency power delivery apparatus of the electrosurgical unit with the cartridge member and the second connection structure is configured to couple the fluid delivery apparatus of the electrosurgical unit with the cartridge member;

the cartridge member coupling the tissue treatment device with the electrosurgical unit to provide radio-frequency power from the radio-frequency power delivery apparatus and a fluid from the fluid delivery apparatus to the tissue treatment device an engagement mechanism to engage the cartridge member upon insertion into a cartridge receptacle of the electrosurgical unit; and

a contact switch at a rear end of the cartridge receptacle configured to close a circuit with a solenoid when the cartridge member reaches the contact switch.

26. The electrosurgical system of claim 25,

wherein the first connection structure and the second connection structure are configured to at least one of:

substantially simultaneously couple the radio frequency power delivery apparatus and the fluid delivery apparatus with the tissue treatment device; and

jointly couple the radio frequency power delivery apparatus and the fluid delivery apparatus with the tissue treatment device.

27. The electrosurgical system of claim 25, wherein the electrosurgical unit further Comprises:

an armature coupled to a lever, the armature in contact with the solenoid, wherein the solenoid retracts the armature such that the lever rotates around a pivot point and lowers a lever portion of the electrosurgical unit to an engaged position, and

wherein a pin enters a cartridge cavity of the cartridge member to lock the cartridge member in place.