Cordless power-assisted medical cauterization and cutting device

• US 8,758,342 B2
• Filed: 11/27/2008
• Issued: 06/24/2014
• Est. Priority Date: 11/28/2007
• Status: Active Grant

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Covidien AG (Medtronic Plc)
• Inventors: Bales, Thomas O., Smith, Kevin W., Kline, Korey, Palmer, Matthew A., Deville, Derek Dee
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): MATNEY, BROOKE MARIE
• Application Number:
  US12/324,873
• Publication Number:
  US 20090138006A1
• Time in Patent Office: 2,035 Days
• Field of Search: 606/48, 606/51, 606/45, 606/49, 606/50, 606/52, 606/167, 606/171, 606/170
• US Class Current: 606/51
• CPC Class Codes: A61B 18/1206 Generators 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 2017/00734 battery operated
• CPC Class Codes: A61B 2018/00958 for switching between different working modes of the main function
• CPC Class Codes: A61B 2018/1226 powered by a battery
• CPC Class Codes: A61B 2018/1412 Blade
• CPC Class Codes: A61B 2018/1455 having a moving blade for cutting tissue grasped by the jaws

Abstract

A cordless cautery and cutting surgical device includes a modular battery and a surgical handle operable to removably hold the battery thereto. The handle has a cordless radio-frequency-signal-generation assembly and a surgical bipolar end effector having jaws and a cutting blade therebetween. The signal-generation assembly selectively supplies radio-frequency signal to the end effector when powered for electrocautery of tissue between the jaws. The handle defines therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding therein the battery. A motor assembly is disposed in the handle and is electrically connected to the battery and/or the signal-generation assembly and is powered and controlled thereby. The motor assembly physically couples to the blade and/or at least one jaw for moving the blade/jaw(s). The second connector part electrically connects the battery to the signal-generation assembly and/or the motor assembly when the battery is removably disposed in the compartment.

Claims

1. A cordless cautery and cutting surgical device, comprising:

at least one modular battery having a selectively removable first connector part; and

a surgical handle having;

a first handle body portion having;

a cordless radio-frequency-signal-generation assembly generating an output radio-frequency signal at an output couple; and

a surgical electrocautery and cutting bipolar end effector electrically connected to the output couple and having jaws and a cutting blade between the jaws, the radio-frequency-signal-generation assembly operable to supply selectively the output radio-frequency signal to the end effector when powered by the battery;

a second handle body portion;

connected to the first handle body portion;

defining therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding therein the battery; and

having a selectively removable second connector part operable to removably hold the first connector part thereto; and

at least one electrically controlled motor assembly;

disposed in one of the first and second handle body portions;

electrically connected to at least one of the battery and the radio-frequency-signal-generation assembly and operable to receive at least one of power and control signals powering and controlling the motor assembly; and

physically coupled to the blade and operable to extend and retract the blade, the second connector part having conductors electrically connecting the battery to at least one of the radio-frequency-signal-generation assembly and the motor assembly when the battery is removably disposed in the compartment.

2. The device according to claim 1, wherein the at least one electrically controlled motor assembly is two electrically controlled motor assemblies, one physically coupled to the blade and the other physically coupled to the jaws and the jaws have bipolar contacts electrically connected to the output couple.

3. The device according to claim 1, wherein the at least one electrically controlled motor assembly is a servo.

4. The device according to claim 1, wherein the first and second handle body portions are integral.

5. The device according to claim 1, wherein the at least one electrically controlled motor assembly includes:

an electrically controlled blade movement assembly including a blade control servo; and

a jaw movement assembly being at least one of;

a manual jaw movement assembly; and

an electrically controlled jaw movement assembly physically coupled to the jaws.

6. The device according to claim 5, wherein the jaw movement assembly is the electrically controlled jaw movement assembly including:

a jaw actuator operatively connected to at least one of the jaws to effect movement thereof;

a jaw control trigger;

a jaw control servo operable to effect movement of the jaw actuator;

jaw control circuitry operatively connected to the jaw control servo; and

a sensor operable to;

detect a position of the jaw control trigger; and

send a signal corresponding to the detected position of the jaw control trigger to the jaw control circuitry;

the jaw control circuitry being operable to control movement of the jaw control servo in response to the signal received from the sensor.

7. The device according to claim 6, wherein:

movement of at least one of the jaws is dependent upon a relative position of the jaw control trigger, the jaw control circuitry; and

the jaw control servo is cooperatively operable to move at least one of the jaws between a jaw-open position and a jaw-closed position corresponding to the relative position of the jaw control trigger detected by the sensor.

8. The device according to claim 7, wherein:

the jaws include at least one cautery portion; and

the jaw movement assembly further includes cautery electronics operatively connected to at least one of the sensor and the jaw control circuitry, the cautery electronics being operable to power the at least one cautery portion of the jaws upon detection of the jaws in the jaw-closed position.

9. The device according to claim 8, wherein the cautery electronics are further operable to actuate the blade control servo upon detection of the jaws in the jaw-closed position.

10. The device according to claim 6, wherein movement of at least one of the jaws is dependent only upon a fully depressed jaw control trigger position, the jaw control circuitry and the jaw control servo being cooperatively operable to move the jaws from a jaw-open position to a jaw-closed position when the jaw control trigger is fully depressed.

11. The device according to claim 6, wherein:

the electrically controlled jaw movement assembly further includes;

a longitudinally translatable jaw control slide; and

a jaw movement crank pivotally connected to the jaw control servo and the jaw control slide; and

movement of the jaw control servo is operable to rotate the jaw movement crank to longitudinally move the jaw control slide and thereby effect longitudinal translation of the jaw actuator.

12. The device according to claim 5, wherein:

the blade movement assembly further includes;

a blade control slide; and

a blade movement crank pivotally connected to the blade control servo and the blade control slide; and

movement of the blade control servo is operable to rotate the blade movement crank to longitudinally move the blade control slide and thereby move the cutting blade between a blade-retracted position and a blade-extended position.

13. The device according to claim 1, wherein:

the first handle body portion further includes a removable circuit casing; and

the cordless radio-frequency-signal generation assembly is housed within the removable circuit casing.

14. The device according to claim 13, wherein:

the surgical handle is disposable; and

the removable circuit casing, when removed from the first handle body portion, is operable to connect with another surgical handle such that the cordless radio-frequency-signal generation assembly is reusable.

15. A cordless cautery and cutting surgical device, comprising:

at least one modular battery having;

a cordless radio-frequency-signal-generation assembly generating an output radio-frequency signal; and

a first connector part electrically connected to the cordless radio-frequency-signal-generation assembly, the cordless radio-frequency-signal-generation assembly operable to supply the output radio-frequency signal to the first connector part;

a surgical handle having;

a first handle body portion having a bipolar cautery and cutting end effector having jaws with bipolar contacts and a cutting blade disposed between the jaws;

a second handle body portion;

connected to the first handle body portion;

defining therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding thereat the modular battery; and

having a second connector part operable to removably hold the first connector part thereto, the second connector part electrically connecting the first connector part to the bipolar contacts for supplying the radio-frequency signal to the bipolar contacts when the first and second connector parts are removably secured together; and

at least one electrically controlled motor assembly;

disposed in one of the first and second handle body portions;

physically coupled to at least one part of the end effector including the blade and at least one of the jaws;

operable to move the blade along a longitudinal axis of the device; and

electrically connected to the battery and operable to receive at least one of power and control signals powering and controlling the motor assembly.

16. The device according to claim 15, wherein the at least one electrically controlled motor assembly is a servo.

17. The device according to claim 15, wherein the at least one electrically controlled motor assembly includes:

an electrically controlled blade movement assembly including a blade control servo connected to the blade; and

a jaw movement assembly operatively connected to at least one of the jaws and being at least one of;

a manual jaw movement assembly; and

an electrically controlled jaw movement assembly.

18. The device according to claim 17, wherein the jaw movement assembly is an electrically controlled jaw movement assembly including:

a jaw actuator operatively connected to at least one of the jaws to effect movement thereof;

a jaw control trigger;

a jaw control servo operable to effect movement of the jaw actuator;

jaw control circuitry operatively connected to the jaw control servo; and

a sensor operable to;

detect a position of the jaw control trigger; and

send a signal corresponding to the detected position of the jaw control trigger to the jaw control circuitry;

the jaw control circuitry being operable to control movement of the jaw control servo in response to the signal received from the sensor.

19. The device according to claim 17, wherein:

the blade movement assembly further includes;

a blade control slide; and

a blade movement crank pivotally connected to the blade control servo and the blade control slide; and

movement of the blade control servo is operable to rotate the blade movement crank to longitudinally move the blade control slide and thereby move the cutting blade between a blade-retracted position and a blade-extended position.