Ultrasonic surgical system

• US 20050033201A1
• Filed: 07/28/2004
• Published: 02/10/2005
• Est. Priority Date: 08/07/2003
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Takahashi, Hiroyuki, Murakami, Eiji
• Granted Patent: US 7,749,240 B2
• Time in Patent Office: Days
• US Class Current: 601/2
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/0003 of parts of the instruments
• CPC Class Codes: A61B 2017/00464 for use with different instruments
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 2017/320069 for ablating tissue
• CPC Class Codes: A61B 2017/32007 with suction or vacuum means
• CPC Class Codes: A61B 2017/320071 with articulating means for working tip
• CPC Class Codes: A61B 2017/320089 node location
• CPC Class Codes: A61B 2017/320094 additional movable means performing clamping operation
• CPC Class Codes: A61B 90/11 with guides for needles or instruments, e.g. arcuate slides or ball joints
• CPC Class Codes: A61B 90/90 Identification means for patients or instruments, e.g. tags

Abstract

An ultrasonic surgical system includes a handpiece including an ultrasonic transducer and a first storage unit; a probe connected to the ultrasonic transducer; a calculation unit; and a control unit. The first storage unit stores a first parameter relating to control of the ultrasonic transducer. The probe transmits ultrasonic vibrations output from the ultrasonic transducer to a treatment target, and includes a second storage unit storing a second parameter relating to control of the ultrasonic transducer. The calculation unit calculates a control parameter for controlling the ultrasonic transducer, based on both the first parameter and the second parameter. The control unit controls the ultrasonic transducer based on the control parameter.

Claims

1. An ultrasonic surgical system comprising:

a handpiece including an ultrasonic transducer and a first storage unit, the first storage unit storing a first parameter relating to control of the ultrasonic transducer;

a probe connected to the ultrasonic transducer, transmitting ultrasonic vibrations output from the ultrasonic transducer to a treatment target, and including a second storage unit storing a second parameter relating to control of the ultrasonic transducer;

a calculation unit calculating a control parameter for controlling the ultrasonic transducer, based on both the first parameter and the second parameter; and

a control unit controlling the ultrasonic transducer based on the control parameter.

2. The ultrasonic surgical system according to claim 1, wherein

at least one of the first parameter and the second parameter includes a driving frequency corresponding to a reference frequency for detecting a resonance frequency of the ultrasonic transducer, and

the calculation unit stores information corresponding to the driving frequency in at least one of the first storage unit and the second storage unit.

3. The ultrasonic surgical system according to claim 1, wherein the control unit includes a current controller controlling a driving current, an amplitude of the ultrasonic vibrations being determined based on the driving current,

at least one of the first parameter and the second parameter includes a driving current setting parameter for setting the driving current, and

the calculation unit stores information corresponding to the driving current setting parameter in at least one of the first storage unit and the second storage unit.

4. The ultrasonic surgical system according to claim 1, wherein the control unit includes a voltage multiplication setting unit that sets a voltage multiplying ratio to determine a driving voltage, the driving voltage depending on impedance characteristics of the ultrasonic transducer and the probe,

at least one of the first parameter and the second parameter includes a voltage multiplying ratio parameter for setting the voltage multiplying ratio, and

the calculation unit stores, as the voltage multiplying ratio setting parameter, information corresponding to the voltage multiplying ratio in at least one of the first storage unit and the second storage unit.

5. The ultrasonic surgical system according to claim 1, wherein the control unit includes an inductor setting unit that selects a value of a parallel inductor to match impedances of the ultrasonic transducer and the probe, and sets an inductance of the parallel inductor,

at least one of the first parameter and the second parameter includes an inductor parameter corresponding to a reference value for setting the inductance, and

the calculation unit stores, as the inductor parameter, information corresponding to the inductance in at least one of the first storage unit and the second storage unit.

6. The ultrasonic surgical system according to claim 1, wherein the first storage unit is arranged in a portion of the probe, the portion corresponding to a node of a standing wave produced by the ultrasonic transducer.

7. The ultrasonic surgical system according to claim 6, wherein the probe includes a holding unit that holds the first storage unit so that the first storage unit can be replaced.

8. The ultrasonic surgical system according to claim 7, wherein

the probe includes an opening inside to place the first storage unit, and

the holding unit is arranged in the opening, and includes a buffer material to reduce stress caused by the ultrasonic vibrations and to hold the first storage unit, and a cap material to close the opening.

9. The ultrasonic surgical system according to claim 7, the probe includes an opening at least linking an end of the probe to which the ultrasonic transducer is connected and the portion of the probe corresponding to the node of the standing wave, and

the holding unit is a supporting rod holding the first storage unit at a tip of the rod so that the first storage unit can be replaced, and when the supporting rod inserted in the opening is fastened with screws to the probe, the first storage unit is arranged in the probe without contact with the probe.

10. An ultrasonic surgical system comprising:

a handpiece including an ultrasonic transducer and a first identifier, the first identifier containing vibrator identification information to identify the ultrasonic transducer;

a probe connected to the ultrasonic transducer, transmitting ultrasonic vibrations output from the ultrasonic transducer to a treatment target, and including a second identifier containing probe identification information to identify the probe;

a storage unit storing a control parameter for controlling the ultrasonic transducer, the control parameter being obtained based on the vibrator identification information and the probe identification information;

a first control unit matching the handpiece and the vibrator identification information determined from the first identifier, matching the probe and the probe identification information determined from the second identifier, and reading, from the storage unit, the control parameter corresponding to the vibrator identification information determined and the probe identification information determined; and

a second control unit controlling the ultrasonic transducer based on the control parameter read by the first control unit.

11. The ultrasonic surgical system according to claim 10, wherein the second control unit performs frequency sweeping based on the control parameter, and causes the ultrasonic transducer to output ultrasonic vibrations at a resonance frequency.

12. The ultrasonic surgical system according to claim 10, wherein the control parameter includes at least one of

a driving frequency corresponding to a reference frequency for detecting a resonance frequency of the ultrasonic transducer,

a driving current setting parameter for setting a driving current from which an amplitude of the ultrasonic vibrations is determined,

a rated voltage of the ultrasonic transducer,

an output modulation parameter relating to an ultrasound output modulation of the ultrasonic transducer,

a voltage multiplying ratio parameter for determining a driving voltage which depends on impedance characteristics of the ultrasonic transducer and the probe, and

an inductor parameter corresponding to a reference value for setting an inductance of a parallel inductor which is for matching impedances of the ultrasonic transducer and the probe.

13. The ultrasonic surgical system according to claim 12, wherein the first control unit stores, in the storage unit, at least one of the driving frequency, the driving current setting parameter, the rated voltage, the output modulation parameter, the voltage multiplying ratio parameter, and the inductor parameter.

14. The ultrasonic surgical system according to claim 10, wherein the first control unit determines whether a combination of the probe and the handpiece is applicable based on the probe identification information and the vibrator identification information.

15. The ultrasonic surgical system according to claim 10, wherein the first identifier is arranged in a portion of the probe, the portion corresponding to a node of a standing wave produced by the ultrasonic transducer.

16. The ultrasonic surgical system according to claim 15, wherein the probe includes a holding unit that holds the first identifier so that the first identifier can be replaced.

17. The ultrasonic surgical system according to claim 16, wherein

the probe includes an opening inside to place the first identifier, and

the holding unit is arranged in the opening, and includes a buffer material to reduce stress caused by the ultrasonic vibrations and to hold the first identifier, and a cap material to close the opening.

18. The ultrasonic surgical system according to claim 16, the probe includes an opening at least linking an end of the probe to which the ultrasonic transducer is connected and the portion of the probe corresponding to the node of the standing wave, and

the holding unit is a supporting rod holding the first identifier at a tip of the rod so that the first identifier can be replaced, and when the supporting rod inserted in the opening is fastened with screws to the probe, the first identifier is arranged in the probe without contact with the probe.

19. The ultrasonic surgical system according to claim 10, wherein

the control parameter includes a driving frequency corresponding to a reference frequency for detecting a resonance frequency of the ultrasonic transducer, and

the first control unit stores information corresponding to the driving frequency in the storage unit.

20. The ultrasonic surgical system according to claim 10, wherein the second control unit includes a current controller controlling a driving current, an amplitude of the ultrasonic vibrations being determined based on the driving current,

the control parameter includes a driving current setting parameter for setting the driving current, and

the first control unit stores information corresponding to the driving current setting parameter in the storage unit.

21. The ultrasonic surgical system according to claim 10, wherein the second control unit includes a voltage multiplication setting unit that sets a voltage multiplying ratio to determine a driving voltage, the driving voltage depending on impedance characteristics of the ultrasonic transducer and the probe,

the control parameter includes a voltage multiplying ratio parameter for setting the voltage multiplying ratio, and

the first control unit stores, as the voltage multiplying ratio setting parameter, information corresponding to the voltage multiplying ratio in the storage unit.

22. The ultrasonic surgical system according to claim 10, wherein the second control unit includes an inductor setting unit that selects a value of a parallel inductor to match impedances of the ultrasonic transducer and the probe, and sets an inductance of the parallel inductor,

the control parameter includes an inductor parameter corresponding to a reference value for setting the inductance, and

the first control unit stores, as the inductor parameter, information corresponding to the inductance in the storage unit.

23. A probe connected to an ultrasonic transducer, transmitting ultrasonic vibrations output from the ultrasonic transducer to a treatment target, comprising a storage unit storing a second parameter relating to control of the ultrasonic transducer, arranged in a portion of the probe, the portion corresponding to a node of a standing wave produced by the ultrasonic transducer.

24. The probe according to claim 23, further comprising a holding unit that holds the storage unit so that the storage unit can be replaced.

25. The probe according to claim 24, further comprising an opening inside to place the storage unit, wherein

the holding unit is arranged in the opening, and includes a buffer material to reduce stress caused by the ultrasonic vibrations and to hold the storage unit, and a cap material to close the opening.

26. The probe according to claim 24, further comprising an opening at least linking an end of the probe to which the ultrasonic transducer is connected and the portion of the probe corresponding to the node of the standing wave, wherein

the holding unit is a supporting rod holding the storage unit at a tip of the rod so that the storage unit can be replaced, and when the supporting rod inserted in the opening is fastened with screws to the probe, the storage unit is arranged in the probe without contact with the probe.

27. The probe according to claim 23, wherein the storage unit is disposed near a center of a cross-section of the probe.