WO2018189839A1 - Control device - Google Patents

Abstract

This control device is used with a treatment tool in which the magnetic flux density at a sensor changes in accordance with an operation of an operation input element. A processor of the control device: acquires output information from the sensor, the output information changing in correspondence with the magnetic flux density at the sensor; and determines, on the basis of the output information from the sensor, whether or not the magnetic flux density at the sensor is within a predetermined range. On the basis of at least the determination that the magnetic flux density is within the predetermined range, the processor enables the supply, to the treatment tool, of electric energy for activating the treatment tool.

Description

Control device

This invention relates to the control apparatus which controls supply of the electrical energy to a treatment tool based on the magnetic flux density in a sensor.

WO2016 / 067739A1 discloses a treatment instrument and a control device that controls the supply of electrical energy to the treatment instrument. In this treatment instrument, an operation input element such as a button is provided, and the operation input element includes a magnet. Further, the treatment instrument is provided with a sensor such as a Hall element that detects the magnetic flux density. When the operation input element moves based on the operation with the operation input element, the distance between the magnet and the sensor changes, and the magnetic flux density at the sensor changes. Then, based on the fact that the magnetic flux density at the sensor is switched from the state below the first threshold value to the state above the first threshold value by the operation with the operation input, the control device performs electrical energy for operating the treatment instrument. The supply to the treatment tool is started. When electric energy is supplied to the treatment tool, the end effector applies treatment energy such as high-frequency current and / or ultrasonic vibration to the treatment target, and treats the treatment target. Further, in a state where electric energy is supplied to the treatment instrument, the magnetic flux density at the sensor is switched from a state larger than the second threshold value to a state below the second threshold value by an operation with the operation input element. Then, the supply of electrical energy to the treatment instrument is stopped. The first threshold value is larger than the second threshold value, and each of the first threshold value and the second threshold value is a fixed value.

As a treatment instrument as shown in WO2016 / 067739A1, a treatment instrument in which the second connection body provided with the sensor is detachably attached to the first connection body provided with the operation input element and the end effector. There is. In this case, it is required that the supply of electrical energy to the treatment instrument be prevented in a state where the two connecting bodies are not properly connected.

An object of the present invention is a control device that controls the supply of electrical energy to a treatment instrument based on the magnetic flux density of a sensor, and in a state where two connecting bodies are not properly connected in the treatment instrument. It is an object of the present invention to provide a control device in which the supply of electrical energy to the treatment tool is effectively prevented.

In order to achieve the above object, an aspect of the present invention includes an operation input element including a magnet and a sensor that detects a magnetic flux density, and the operation input element is based on an operation on the operation input element. A control device for controlling the supply of electrical energy for operating the treatment instrument to the treatment instrument, wherein the control device is used with the treatment instrument that changes the magnetic flux density at the sensor by moving together with the sensor. Output information from the sensor that changes corresponding to the magnetic flux density is acquired, and based on the output information from the sensor, it is determined whether or not the magnetic flux density at the sensor is within a predetermined range. A processor that enables the electrical energy to be supplied to the treatment instrument based at least on determining that the magnetic flux density is within the predetermined range.

FIG. 1 is a schematic view showing a treatment system according to the first embodiment. FIG. 2 is a block diagram schematically showing an electrical connection state in the treatment system according to the first embodiment. FIG. 3 is a cross-sectional view schematically showing configurations of the first connection body and the second connection body according to the first embodiment. FIG. 4 is a schematic diagram illustrating an electrical connection state of a certain sensor according to the first embodiment to a processor and a sensor power supply. FIG. 5 is a flowchart illustrating a process performed by the processor according to the first embodiment in determining whether to permit output of electrical energy for operating the treatment instrument. FIG. 6 is a flowchart illustrating processing performed in the output control of electric energy for operating the treatment instrument when the processor according to the first embodiment permits output. FIG. 7 is a schematic diagram showing the relationship between the displacement from the initial position of a certain operation button according to the first embodiment and the magnetic flux density at the corresponding sensor. FIG. 8 is a flowchart illustrating a process performed by the processor according to a modification of the first embodiment in determining whether to permit the output of electrical energy for operating the treatment tool.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a diagram showing a treatment system 1 of the present embodiment. As shown in FIG. 1, the treatment system 1 includes a treatment tool 2 and an energy source device 3. In the present embodiment, the energy source device 3 is a control device that controls the supply of electrical energy that operates the treatment tool 2 to the treatment tool 2. The treatment instrument 2 includes a first connection body 5 and a second connection body 6 that is detachably attached to the first connection body 5. In one embodiment, the first connector 5 is discarded after the treatment instrument 2 is used. Then, after the treatment tool 2 is used, the second connection body 6 is cleaned and sterilized and reused. One end of a cable 7 is connected to the second connection body 6. The other end of the cable 7 is detachably connected to the energy source device 3.

FIG. 2 is a diagram showing an electrical connection state in the treatment system 1, and FIG. 3 is a diagram showing a configuration of the first connection body 5 and the second connection body 6. As shown in FIGS. 1 and 3, the first connection body 5 includes a case 11 that forms an exterior, and a shaft 12 that is fixed to the case 11. The shaft 12 is supported by the case 11 inside the case 11, and the outer peripheral surface of the shaft 12 is covered by the case 11. Further, a space is formed between the outer peripheral surface of the shaft 12 and the inner peripheral surface of the case 11. The shaft 12 includes a longitudinal axis C as a central axis. Here, one side in the direction along the longitudinal axis C is defined as the distal end side (arrow C1 side), and the opposite side to the distal end side is defined as the proximal end side (arrow C2 side). The tip of the case 11 is located on the tip side with respect to the tip of the shaft 12. In the present embodiment, the case 11 is formed of two members 11A and 11B.

In the first connection body (tip-side connection body) 5, a rod member (probe) 13 extends along the longitudinal axis C from the inside of the shaft 12 toward the tip side. In the present embodiment, the rod member 13 is supported by the case 11 and is provided substantially coaxially with the shaft 12 (longitudinal axis C). Further, the rod member 13 is made of a material having conductivity and high vibration transmission properties, and is made of, for example, a titanium alloy. The rod member 13 passes through the inside of the case 11 (inside the member 11 </ b> A) at a portion on the tip side with respect to the tip of the shaft 12. The distal end portion of the rod member 13 projects from the distal end of the case 11 toward the distal end side. An end effector 14 for treating a treatment target is formed by a protruding portion of the rod member 13 from the case 11.

The second connection body (base end side connection body) 6 includes a housing 15 that can be held. In a state where the second connection body 6 is attached to the first connection body 5, the housing 15 is substantially coaxial with the shaft 12 (longitudinal axis C). An ultrasonic transducer 16 extends from the proximal end side to the distal end side inside the housing 15. In a state where the second connection body 6 is attached to the first connection body 5, the ultrasonic transducer 16 is provided substantially coaxially with respect to the rod member 13 (longitudinal axis C), and the tip of the ultrasonic transducer 16 is The shaft 12 abuts on the rod member 13 from the base end side. The ultrasonic transducer 16 includes a piezoelectric element 17 that converts electrical energy into vibration energy, and an extending member 18 to which the piezoelectric element 17 is attached. One or more piezoelectric elements 17 may be provided, and a plurality of piezoelectric elements 17 are provided in the present embodiment. The extending member 18 is made of a material having conductivity and high vibration transmission. In the ultrasonic transducer 16, the extending member 18 is electrically insulated from the piezoelectric element 17.

As shown in FIG. 2, the energy source device 3 as a control device includes a processor (controller) 21 and a storage medium 22. The processor 21 is formed of an integrated circuit including a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or an FPGA (Field Programmable Gate Array). Only one processor 21 may be provided in the energy source device 3, or a plurality of processors 21 may be provided in the energy source device 3. Processing in the processor 21 is performed according to a program stored in the processor 21 or the storage medium 22. In addition, the storage medium 22 stores a processing program used by the processor 21, parameters, functions, tables, and the like used in the calculation by the processor 21. In one embodiment, the processor 21 is provided in the treatment instrument 2, and at least a part of the processing described below is performed by the processor 21 provided in the treatment instrument 2. In this case, the processor 21 provided in the treatment instrument 2 also constitutes a control device that controls the supply of electrical energy for operating the treatment instrument 2 to the treatment instrument 2. In this case, the storage medium 22 may be provided in the treatment instrument 2.

The energy source device 3 includes an ultrasonic power source 23 as an output source that outputs electrical energy for operating the treatment instrument 2. The ultrasonic power source 23 is electrically connected to the piezoelectric element 17 via the electric paths 25A and 25B, and each of the electric paths 25A and 25B is formed from, for example, an electric wiring or the like extending inside the cable 7. The The ultrasonic power source 23 includes a waveform generator, a conversion circuit, a transformer, and the like, and converts electric power from a battery power source, an outlet power source, or the like into, for example, AC power of any frequency within a predetermined frequency range. The ultrasonic power source 23 outputs the converted AC power through the electrical paths 25A and 25B, and supplies AC power to the piezoelectric element 17 (ultrasound transducer 16) as electrical energy for operating the treatment instrument 2. Thereby, the piezoelectric element 17 converts electric energy into vibration energy, and ultrasonic vibration is generated in the piezoelectric element 17. In a state where the second connection body 6 is appropriately attached to the first connection body 5, the ultrasonic vibration generated by the piezoelectric element 17 is transmitted from the ultrasonic transducer 16 to the end effector 14 through the rod member 13. Then, the transmitted ultrasonic vibration is applied as treatment energy from the end effector 14 to the treatment target. The processor 21 controls the supply of AC power (electric energy) to the piezoelectric element 17 by controlling the output from the ultrasonic power source 23.

Further, the energy source device 3 includes a high frequency power source 26 as an output source that outputs electrical energy for operating the treatment instrument 2. The high-frequency power source 26 is electrically connected to the end effector 14 via an electric path 27A, and is connected to a counter electrode plate 28 separate from the treatment instrument 2 via an electric path 27B. The electric path 27 </ b> A is formed from, for example, electric wiring extending inside the cable 7, the extending member 18 of the ultrasonic transducer 16, the rod member 13, and the like. The high frequency power source 26 includes a waveform generator, a conversion circuit, a transformer, and the like, and converts power from a battery power source or an outlet power source into high frequency power. The high frequency power supply 26 outputs the converted high frequency power through the electric paths 27A and 27B, and supplies the high frequency power to the end effector 14 and the counter electrode plate 28 as electric energy for operating the treatment instrument 2. Thereby, the end effector 14 and the counter electrode plate 28 function as electrodes having different potentials with respect to each other. When the end effector 14 and the counter electrode plate 28 function as electrodes, a high frequency current flows through the treatment object between the end effector 14 and the counter electrode plate 28, and the high frequency current is applied to the treatment object as treatment energy. The processor 21 controls the supply of high-frequency power (electric energy) to the end effector 14 and the counter electrode 28 by controlling the output from the high-frequency power source 26.

As shown in FIG. 3, in the first connection body 5, a cylindrical slider member 31 is disposed on the outer peripheral surface of the shaft 12. The slider member 31 is movable along the longitudinal axis C with respect to the case 11 and the shaft 12. The slider member 31 is provided with cam pins 32 that protrude to the outer peripheral side (in the present embodiment, a plurality of cam pins 32). One or more cam pins 32 may be provided. A cylindrical elastic member (coil spring) 33 is disposed on the outer peripheral surface of the shaft 12. A distal end (one end) of the elastic member 33 is connected to the slider member 31, and a proximal end (other end) of the elastic member 33 is connected to the shaft 12. In the second connection body 6, a cam groove 35 (in the present embodiment) is formed on the inner peripheral surface of the housing 15. The cam grooves 35 are provided in the same number as the cam pins 32, and each of the cam grooves 35 is provided corresponding to one of the cam pins 32. Each of the cam grooves 35 extends from the proximal end side toward the distal end side while being inclined with respect to the direction along the longitudinal axis C. In each of the cam grooves 35, a corresponding cam pin (a corresponding one of 32) can be inserted, and a corresponding cam pin (a corresponding one of 32) can be engaged.

In the present embodiment, the connection between the two connectors 5 and 6 is connected in the same manner as the connection between the two connectors in WO2016 / 035380A1. That is, when connecting the connecting members 5 and 6, the housing 15 is inserted into the space between the shaft 12 and the case 11 from the proximal end side, and the distal end portion of the ultrasonic transducer 16 is placed inside the shaft 12. Insert from the proximal side. In the shaft 12, the tip of the ultrasonic transducer 16 is brought into contact with the proximal end of the rod member 13, and each of the cam pins 32 is inserted into the tip of the corresponding cam groove (corresponding one of 35). In this state, the connecting bodies 5 and 6 are rotated about the longitudinal axis C with respect to each other. As a result, each of the cam pins 32 moves in the corresponding cam groove (corresponding one of 35) from the distal end toward the proximal end side. Then, each of the cam pins 32 moves to the base end of the corresponding cam groove (corresponding one of 35), and each of the cam pins 32 is held at the base end of the corresponding cam groove (corresponding one of 35). Thus, the connection bodies 5 and 6 are appropriately connected.

In the connection between the connecting bodies 5 and 6, as described above, each of the cam pins 32 moves to the base end side through the corresponding cam groove (one corresponding to the 35), so that the slider member 31 is moved to the case 11. And it moves to the base end side with respect to the shaft 12. As a result, the elastic member 33 contracts, and a force acts on the shaft 12 from the elastic member 33 toward the base end side. The force acting on the shaft 12 from the elastic member 33 is transmitted to the rod member 13 via the case 11 (members 11A and 11B), and the force toward the proximal end acts on the rod member 13. For this reason, in a state where the second connection body 6 is appropriately attached to the first connection body 5, the base end of the rod member 13 is moved to the ultrasonic transducer 16 by the force applied to the base end side acting on the rod member 13. The proximal end of the rod member 13 firmly contacts the distal end of the ultrasonic transducer 16. When the rod member 13 firmly contacts the ultrasonic transducer 16 from the tip side, ultrasonic vibration is appropriately transmitted from the ultrasonic transducer 16 to the rod member 13.

As shown in FIG. 1, in the second connection body 6, a substrate 40 such as a flexible substrate is provided inside the housing 15. On the substrate 40 (three in the present embodiment) sensors 41 (41A to 41C in the present embodiment) are provided. Each of the sensors 41 is, for example, a Hall element, and detects the magnetic flux density B (Ba; Bb; Bc). The number of sensors 41 is not limited to three, and one or more sensors 41 may be provided. In a state where the connection bodies 5 and 6 are connected, the sensor 41 and the substrate 40 are located on the proximal end side with respect to the proximal end of the shaft 12 and the elastic member 33. The sensor 41 is electrically connected to the processor 21 of the energy source device 3 via the electrical path 42. In addition, the energy source device 3 is provided with a sensor power supply 43 that outputs a current (electric energy) that operates the sensor 41. The sensor 41 is electrically connected to the sensor power supply 43 via the electric path 42. The output of current from the sensor power supply 43 to the sensor 41 is controlled by the processor 21 or the like. The electrical path 42 is formed by a plurality of electrical wirings extending through the inside of the housing 15 and the inside of the cable 7, and an electrical circuit on the substrate 40.

FIG. 4 is a diagram showing an electrical connection state to one processor (for example, 41A) of the sensor 41 and the sensor power source 43. As shown in FIG. 4, the sensor power supply 43 includes a power supply 45A that outputs a current for operating the sensor 41A. The power supply 45A is a DC power supply, for example. The sensor 41A is electrically connected to the power supply 45A via current paths 46A1 and 46A2 that form part of the electrical path 42. The processor 21 includes a voltage detection circuit 47A. The sensor 41A is electrically connected to the voltage detection circuit 47A via sensor output paths 48A1 and 48A2 that form part of the electrical path 42. In some embodiments, the voltage detection circuit 47A may be provided separately from the processor 21.

In the present embodiment, the processor 21 acquires the magnetic flux density Ba detected by the sensor 41A using the Hall effect generated by the sensor 41A such as a Hall element. That is, the processor 21 operates the sensor 41A by outputting a current from the power supply 45A of the sensor power supply 43 and causing the current to flow through the sensor 41A through the current paths 46A1 and 46A2. When the sensor 41A is activated, when a magnetic field is generated in a direction perpendicular to the current passing through the current paths 46A1 and 46A2, an electromotive force is generated in the direction perpendicular to the current and perpendicular to the magnetic field due to the Hall effect. When the electromotive force is generated, electric energy (voltage) is output from the sensor 41A to the sensor output paths 48A1 and 48A2, and a voltage is applied between the sensor output paths 48A1 and 48A2. The voltage detection circuit 47A detects the voltage between the sensor output paths 48A1 and 48A2. Here, the voltage between the sensor output paths 48A1 and 48A2 changes corresponding to the magnetic flux density Ba of the magnetic field in the sensor 41A, and the voltage is larger as the magnetic flux density Ba is larger. Therefore, the voltage detection circuit 47A of the processor 21 acquires the voltage between the sensor output paths 48A1 and 48A2 as output information from the sensor 41A that changes corresponding to the magnetic flux density Ba. Further, the storage medium 22 stores a table or function indicating the relationship between the voltage between the sensor output paths 48A1 and 48A2 and the magnetic flux density Ba. The processor 21 calculates the magnetic flux density Ba in the sensor 41A based on the detection result in the voltage detection circuit 47A, the relationship between the stored voltage and the magnetic flux density Ba, and the like.

The sensors 41B and 41C other than the sensor 41A are also electrically connected to the processor 21 and the sensor power source 43 in the same manner as the sensor 41A. Therefore, the treatment system 1 includes a power supply (45B; 45C) similar to the power supply 45A, a current path (46B1, 46B2; 46C1, 46C2) similar to the current paths 46A1 and 46A2, and a voltage detection circuit similar to the voltage detection circuit 47A. (47B; 47C) and sensor output paths (48B1, 48B2; 48C1, 48C2) similar to the sensor output paths 48A1, 48A2. The processor acquires the magnetic flux density Bb at the sensor 41B and the magnetic flux density Bc at the sensor 41C in the same manner as the magnetic flux density Ba at the sensor 41A. In an embodiment, the sensors 41A to 41C may be electrically provided in parallel, and a current for operating the sensors 41A to 41C may be output to the sensors 41A to 41C from a common power source provided to the sensor power source 43.

As shown in FIG. 3, the case 11 (member 11 </ b> B) of the first connection body 5 is provided with a protruding piece 50 that protrudes toward the base end side. Operation buttons 51 (three in this embodiment) operation buttons 51 (51A to 51C in this embodiment) are movably attached to the protruding piece 50 as operation input elements. In the present embodiment, the protruding piece 50 and the operation button 51 are located on the proximal end side with respect to the proximal end of the shaft 12 and the elastic member 33. Further, in a state where the connection bodies 5 and 6 are appropriately connected, the protruding piece 50 and the operation button 51 are located outside the housing 15.

In each of the operation buttons 51, an operation for outputting electric energy for operating the treatment instrument 2 from the energy source device 3 (the ultrasonic power source 23 and / or the high frequency power source 26) is input by an operator or the like. In the present embodiment, the same number of operation buttons 51 as the sensors 41 are provided, and each of the operation buttons 51 is provided corresponding to one of the sensors 41. Each of the operation buttons 51 includes a magnet (a corresponding one of 52) that generates a magnetic field. Each of the magnets 52 (52A to 52C in the present embodiment) is fixed to a corresponding operation button (a corresponding one of 51), and together with a corresponding operation button (a corresponding one of 51), is attached to the case 11. It can be moved. When each of the operation buttons 51 is pressed by an operation input, each of the operation buttons 51 moves together with a corresponding magnet (a corresponding one of 52). Further, each of the operation buttons 51 has an initial position Pe (Pae; Pbe; Pce) and a maximum displacement position where the displacement D (Da; Db; Dc) from the initial position Pe becomes the maximum value Dmax (Damax; Dbmax; Dcmax). It can move between Pd (Pad; Pbd; Pcd). That is, the position P (Pa; Pb; Pc) of the operation button 51 with respect to each case 11 can be changed between the initial position Pe (position where the displacement D becomes zero) and the maximum displacement position Pd. Each of the operation buttons 51 is located at the initial position Pe when no operation input is performed, that is, when the operation button 51 is not pressed.

In a state in which the connection bodies 5 and 6 are appropriately connected, each of the sensors 41 sandwiches the housing 15 and has a corresponding operation button (a corresponding one of 51) and a corresponding magnet (a corresponding one of 52). Two). Accordingly, when the connection bodies 5 and 6 are appropriately connected, that is, when the connection bodies 5 and 6 are attached to each other at a predetermined position, each of the sensors 41 has a corresponding operation button (51 Are arranged in a predetermined positional relationship. At this time, since the housing 15 is provided between each of the sensors 41 and the corresponding operation button (one corresponding to 51), each sensor 41 corresponds to each corresponding operation button (one corresponding to 51). Do not contact with. Therefore, the sensor 41 is a non-contact type sensor.

Further, the corresponding operation button (corresponding one of 51) moves together with the magnet (corresponding one of 52) based on the operation, so that the magnet corresponding to each of the sensors 41 (corresponding one of 52). The distance between and changes. As the distance between the corresponding magnets (the corresponding one of 52) changes, the magnetic flux density B (Ba; Bb; Bc) in each of the sensors 41 changes. In the present embodiment, based on the magnetic flux density B at the sensor 41, the processor 21 determines whether or not electrical energy for operating the treatment instrument 2 can be output (supplied) from the energy source device 3 to the treatment instrument 2. to decide. When it is determined that the output of the electrical energy to the treatment instrument 2 is permitted, the processor 21 determines from the energy source device 3 of the electrical energy that operates the treatment instrument 2 based on the magnetic flux density B of the sensor 41 to the treatment instrument 2. Controls the output (supply) to

Next, operations and effects of the energy source device 3 and the treatment system 1 that are control devices will be described. When the treatment target is treated using the treatment system 1, the second connection body 6 is connected to the energy source device 3 via the cable 7. Then, a current is supplied from the sensor power supply 43 to each of the sensors 41 to operate the sensors 41. Further, the connection bodies 5 and 6 are connected. Then, the end effector 14 is disposed in the vicinity of the treatment target in a state where the counter electrode plate 28 is attached to the subject (human body). In the treatment, before the end effector 14 disposed in the vicinity of the treatment target is brought into contact with the treatment target, it is determined whether or not the electric energy for operating the treatment instrument 2 can be output, that is, the output permission of the electric energy is permitted. A determination is made by the processor 21. FIG. 5 is a flowchart showing processing performed by the processor 21 in the determination of the output permission of electric energy for operating the treatment instrument 2. The determination of the output permission in FIG. 5 is performed in a state in which the electric energy for operating the treatment instrument 2 cannot be output from the energy source device 3.

As shown in FIG. 5, in the output permission determination, the processor 21 acquires the magnetic flux density Br in a specific one of the sensors 41 (41A to 41C) (S101). The magnetic flux density Br is a specific one of the magnetic flux densities Ba to Bc. In one embodiment, the magnetic flux density Ba is the magnetic flux density Br. In another embodiment, the magnetic flux density Bb is the magnetic flux density Br, and in another embodiment, the magnetic flux density Bc is the magnetic flux density Br. Then, the processor 21 determines whether or not the magnetic flux density Br is within a predetermined range not less than the lower limit value Brs1 and not more than the upper limit value Brs2 (S102). In the present embodiment, when the connecting members 5 and 6 are appropriately connected to each other and each of the operation buttons 51 is located at the initial position Pe, the magnetic flux density Br (a specific one of Ba to Bc) is The processor 21 sets the predetermined range so that it falls within the predetermined range. That is, when the connecting members 5 and 6 are attached to each other at a predetermined position and no operation is input by the operation button 51, the magnetic flux density Br is within a predetermined range. When the connection bodies 5 and 6 are located at positions different from the predetermined positions with respect to each other, such as when the connection bodies 5 and 6 are not properly attached to each other, an operation is input with the operation button 51. In a state where the magnetic flux density is not, the magnetic flux density Br deviates from a predetermined range. Therefore, in a state where all the operation buttons 51 are located at the initial position Pe, the magnetic flux density is obtained when each of the sensors 41 is arranged in a predetermined positional relationship with respect to the corresponding operation button (one corresponding to 51). When Br is within a predetermined range and each of the sensors 41 is not arranged in a predetermined positional relationship with respect to the corresponding operation button (one corresponding to 51), the magnetic flux density Br deviates from the predetermined range. Therefore, based on whether or not the magnetic flux density Br is within a predetermined range, the processor 21 determines whether or not the connecting members 5 and 6 are appropriately attached to each other, that is, each of the sensors 41 corresponds. It is possible to determine whether or not the operation button (one corresponding to 51) is arranged in a predetermined positional relationship. In one embodiment, each of the lower limit value Brs1 and the upper limit value Brs2 is a fixed value.

When the magnetic flux density Br (a specific one of Ba to Bc) is within a predetermined range (S102-Yes), the processor 21 sets the determination parameter η to 0 (S103). In the present embodiment, when the determination parameter η is set to 0, the output permission determination ends. On the other hand, when the magnetic flux density Br is out of the predetermined range, that is, when the magnetic flux density Br is smaller than the lower limit value Brs1 or larger than the upper limit value Brs2 (S102-No), the processor 21 ends the determination. Is determined (S104). In an embodiment, the energy source device 3 is provided with a setting unit such as a touch panel or a button, and is switched from a state in which the above determination is made to a state in which the above determination is not performed by an operation of the operator or the like in the setting unit. It is done. Then, the processor 21 determines to end the determination based on the operation in the setting unit. In another embodiment, the processor 21 ends the above-described determination when a predetermined time has elapsed from the start of operation of the sensor 41.

If the determination is not completed (S104-No), the process returns to S101, and the processes after the processor 21 and S101 are sequentially performed. On the other hand, when ending the determination (S104-Yes), the processor 21 sets the determination parameter η to 1 (S105). Therefore, the determination parameter η is set to 1 when the magnetic flux density Br continues out of the predetermined range until the end of the determination. The set determination parameter η is stored in the storage medium 22, for example.

When the determination parameter η is set to 0, the processor 21 permits the output (supply) of the electrical energy for operating the treatment tool 2 to the treatment tool 2. Therefore, the energy source device 3 is in a state in which electrical energy can be output based on an operation with any of the operation buttons 51. That is, the processor 21 can output electric energy from at least one of the ultrasonic power source 23 and the high frequency power source 26 and can supply electric energy to the treatment instrument 2.

On the other hand, when the determination parameter η is set to 1, the processor 21 prohibits the output (supply) of the electrical energy that operates the treatment tool 2 to the treatment tool 2. Therefore, the energy source device 3 is in a state where it cannot output electrical energy regardless of the operation with the operation button 51. In this case, even if the operation button 51 is operated, no electrical energy is output from the ultrasonic power source 23 and the high frequency power source 26, and the electrical energy for operating the treatment instrument 2 is not supplied to the treatment instrument 2. In an embodiment, the treatment system 1 is provided with a warning unit such as a lamp, a display screen, or a buzzer. If it is determined that the output is prohibited, the processor 21 operates the warning unit to give a warning.

When the determination of the output permission is completed, the surgeon presses any one of the operation buttons 51 in a state where the end effector 14 is disposed in the vicinity of the treatment target such as a living tissue, and the electric energy is supplied from the energy source device 3. Enter the operation to be output. At the time when the output of electrical energy is started, the end effector 14 is positioned in the vicinity of the treatment target, but is not in contact with the treatment target. Then, in a state where the output of electric energy from the energy source device 3 is continued, the surgeon brings the end effector 14 into contact with the treatment target. FIG. 6 is a flowchart showing a process performed by the processor 21 in the output control of electric energy for operating the treatment instrument 2 when the output is permitted, that is, when the determination parameter η is set to 0. The output control shown in FIG. 6 is performed only when it is determined in S102 of FIG. 5 that the magnetic flux density Br is within a predetermined range.

As shown in FIG. 6, in the output control of electric energy after the output is permitted, the processor 21 determines that the magnetic flux density Ba is equal to or less than the threshold value (first threshold value) Bath1 at the start of the process or immediately after the start. Then, it is acquired that the magnetic flux density Bb is equal to or less than a threshold value (first threshold value) Bbth1 and the magnetic flux density Bc is equal to or less than a threshold value (first threshold value) Bcth1 (S111). That is, the processor 21 acquires that all the magnetic flux densities Ba to Bc are equal to or less than the corresponding threshold value (Bath1; Bbth1; Bcth1). Then, the processor 21 acquires the magnetic flux density B (Ba to Bc) for all the sensors 41 (41A to 41C) (S112). As a result, each time-dependent change in the magnetic flux densities Ba to Bc from the state where all the magnetic flux densities Ba to Bc acquired in S111 are equal to or less than the corresponding threshold value (Bath1; Bbth1; Bcth1) is detected.

Here, in the magnetic flux densities Ba to Bc acquired in S112, any one is set as the magnetic flux density B1, any one other than the magnetic flux density Bl is set as the magnetic flux density Bm, and one other than the magnetic flux densities Bl and Bm is set as the magnetic flux. The density is Bn. Based on the magnetic flux densities Ba to Bc acquired in S112, the processor 21 determines that the magnetic flux density B1 is greater than the threshold value (first threshold value) Bth1 and the magnetic flux density Bm is equal to or less than the threshold value (first threshold value) Bmth1. Then, it is determined whether or not the magnetic flux density Bn has changed from the state acquired in S111 to a state where the magnetic flux density Bn is equal to or less than the threshold (first threshold) Bnth1 (S113). That is, the processor 21 determines whether or not only the magnetic flux density Bl, which is any one of the magnetic flux densities Ba to Bc, has changed from the state acquired in S111 to a state where it is greater than the threshold value Blth1. Each of the threshold values Blth1 to Bnth1 corresponds to a corresponding one of the threshold values Bath1 to Bcth1. When none of the magnetic flux densities Ba to Bc has changed to a state larger than the corresponding threshold value (Bath1; Bbth1; Bcth1) (S113-No), that is, all the magnetic flux densities Ba to Bc have corresponding threshold values ( Bath1; Bbth1; Bcth1) If the following state is maintained, the process returns to S111, and the processor 21 sequentially performs the processes after S111. At this time, through the processing of S111, the processor 21 acquires that all of the magnetic flux densities Ba to Bc are equal to or less than the corresponding threshold values (Bath1; Bbth1; Bcth1). Further, while the processes of S111 to S113 are repeatedly performed, the output of the electric energy from the energy source device 3 that operates the treatment instrument 2 is maintained in a stopped state.

The threshold values Bath1 to Bcth1 may be the same value with respect to each other or may be different values with respect to each other. Further, the processor 21 sets each of the threshold values (first threshold values) Path1 to Bcth1 to a value larger than the upper limit value Brs2 of the predetermined range. Each of the threshold values Bath1 to Bcth1 may be a fixed value, and the displacement D (Da; Db; Dc) and the magnetic flux density B (Ba;) from the initial position Pe (Pae; Pbe; Pce) of the operation button 51. Bb; Bc) may be set based on the relationship. In one embodiment, each of the threshold values Bath1 to Bcth1 is a predetermined value ε1 for the magnetic flux density Be (Bae; Bbe; Bce) in a state where the corresponding operation button (one corresponding to 51) is located at the initial position Pe. It is set to a value obtained by adding (εa1; εb1; εc1).

When only the magnetic flux density Bl changes to a state larger than the threshold value Blth1 in S113 (S113-Yes), the processor 21 starts output of the electrical energy for operating the treatment instrument 2 from the energy source device 3 to the treatment instrument 2. (S114). That is, the processor 21 outputs electric energy from at least one of the ultrasonic power source 23 and the high frequency power source 26 and supplies the electric energy to the treatment instrument 2. Thereby, as described above, ultrasonic vibration and / or high-frequency current is applied to the treatment target. Then, the processor 21 acquires the magnetic flux density B1 (S115).

At this time, the output is performed in the output mode corresponding to the magnetic flux density Bl changed to a state larger than the threshold value Blth1. For example, when the magnetic flux density Ba changes to a state larger than the threshold value Bath1 (that is, when the magnetic flux density B1 is the magnetic flux density Ba), the processor 21 performs output in the first output mode, and the magnetic flux density Bb is the threshold value. When the state is changed to a state larger than Bbth1 (that is, when the magnetic flux density B1 is the magnetic flux density Bb), the processor 21 performs output in a second output mode different from the first output mode. When the magnetic flux density Bc changes to a state larger than the threshold value Bcth1 (that is, when the magnetic flux density B1 is the magnetic flux density Bc), the processor 21 differs from the first output mode and the second output mode. The output is performed in the output mode 3. The output state of the electric energy from the energy source device 3 is different for each output mode. That is, the necessity and / or output level of the output from at least one of the ultrasonic power source 23 and the high frequency power source 26 differs for each output mode. In an embodiment, the energy source device 3 is provided with an output setting unit such as a touch panel. Then, in the output setting unit, necessity and output level of output from each of the ultrasonic power source 23 and the high frequency power source 26 are set for each output mode.

Further, in the state where the output is performed in the output mode corresponding to the magnetic flux density B1, the processor 21 does not change the magnetic flux density even if either the magnetic flux density Bm or Bn changes to a state larger than the threshold (Bmth1; Bnth1). Output continues in the output mode corresponding to Bl. That is, the processor 21 outputs electric energy in the output mode corresponding to the magnetic flux density B1 that has changed to a state larger than the corresponding threshold value Bth1 among the magnetic flux densities Ba to Bc.

The processor 21 determines whether or not the magnetic flux density Bl acquired in S115 is equal to or less than a threshold value (second threshold value) Blth2 (S116). Here, the threshold value Blth2 corresponds to a corresponding one of the threshold values (second threshold values) Bath2 to Bcth2, and in S116, the magnetic flux density B1 determined to have changed to a state larger than the threshold value Blth1 in S113 is determined. Done. The threshold values Bath2 to Bcth2 may be the same value with respect to each other or may be different values with respect to each other. The processor 21 sets each of the threshold values Bath2 to Bcth2 to a value smaller than the aforementioned threshold value (Bath1; Bbth1; Bcth1). Therefore, in S116, it is determined whether or not the magnetic flux density Bl has been switched from a state larger than the threshold value Blth2 to a state equal to or lower than the threshold value Blth2. In the present embodiment, the processor 21 sets each of the thresholds Bath2 to Bcth2 to a value larger than the upper limit value Brs2 of the predetermined range. Each of the thresholds Bath2 to Bcth2 may be a fixed value, and the displacement D (Da; Db; Dc) and the magnetic flux density B (Ba;) from the initial position Pe (Pae; Pbe; Pce) of the operation button 51. Bb; Bc) may be set based on the relationship. In one embodiment, each of the threshold values Bath2 to Bcth2 has a predetermined value ε1 (εa1; εb1; εc1) for the magnetic flux density Be (Bae; Bbe; Bce) in a state where the corresponding operation button 51 is located at the initial position Pe. It is set to a value obtained by adding a smaller predetermined value ε2 (εa2; εb2; εc2).

If the magnetic flux density Bl is larger than the threshold value Blth2 (S116-No), the process returns to S114, and the processor 21 sequentially performs the processes after S114. At this time, the output from the energy source device 3 of the electric energy that operates the treatment instrument 2 is continued. While the processes of S114 to S116 are repeatedly performed, the processor 21 determines whether the magnetic flux densities Bm and Bn have changed to a state where the magnetic flux densities Bm and Bn are larger than the corresponding threshold values (Bmth1; Bnth1). Electric energy is output in an output mode corresponding to the density B1. On the other hand, when the magnetic flux density B1 is less than or equal to the threshold value B1th2 (S116-Yes), the processor 21 stops the output of the electrical energy from the energy source device 3 for operating the treatment instrument 2 to the treatment instrument 2 (S117). Thereby, supply to the treatment tool 2 of the electrical energy which operates the treatment tool 2 is stopped.

FIG. 7 is a diagram showing the relationship between the position Pa (displacement Da from the initial position Pae) of the one operation button 51A with respect to the case 11 and the magnetic flux density Ba at the corresponding sensor 41A. In the example of FIG. 7, the magnetic flux density Ba becomes the above-described magnetic flux density Br. In FIG. 7, the horizontal axis indicates the position Pa, and the vertical axis indicates the magnetic flux density Ba. Moreover, in FIG. 7, a relationship is shown about each of state X1, X2. In the state X1, the connectors 5 and 6 are appropriately attached to each other, and each of the sensors 41 is arranged in a predetermined positional relationship with respect to the corresponding operation button (the corresponding one of 51). On the other hand, in the state X2, the connectors 5 and 6 are not properly attached to each other, and each of the sensors 41 is not arranged in a predetermined positional relationship with the corresponding operation button (one corresponding to 51). In FIG. 7, the relationship in the state X1 is indicated by a solid line, and the relationship in the state X2 is indicated by a broken line.

As shown in FIG. 7, in each of the states X1 and X2, the magnetic flux density (Bad1; Bad2) at the sensor 41A is larger than the threshold value Bath1 when the operation button 51A is located at the maximum displacement position Pad. Therefore, even when the connectors 5 and 6 are not properly connected to each other, the magnetic flux density Ba is set to the threshold value Bath1 while the operation button 51A moves from the initial position Pae to the maximum displacement position Pad as in the state X2. The following state may be switched to a state larger than the threshold value Bath1. However, in the state X2, in a state where the operation button 51A is located at the initial position Pae, the magnetic flux density Bae2 at the sensor 41A is smaller than the lower limit value Bas1 of the predetermined range and deviates from the predetermined range. For this reason, in the state X2, the determination parameter η is set to 1 by the process of S105, and the output (supply) of the electrical energy for operating the treatment tool 2 to the treatment tool 2 is prohibited. Therefore, in the state X2, even when the operation button 51A is moved toward the maximum displacement position Pad and the magnetic flux density Ba becomes larger than the threshold value Bath1, electric energy for operating the treatment tool 2 is not supplied to the treatment tool 2. Further, in the state X2, since the output (supply) of the electrical energy that operates the treatment instrument 2 to the treatment instrument 2 is prohibited, either one of the operation buttons 51B and 51C is moved toward the maximum displacement position (pbd; Pcd). Even when moved, the electrical energy for operating the treatment instrument 2 is not supplied to the treatment instrument 2.

On the other hand, in the state X1, in a state where the operation button 51A is located at the initial position Pae, the magnetic flux density Bae1 at the sensor 41A is within a predetermined range that is not less than the lower limit value Bas1 and not more than the upper limit value Bas2. For this reason, in the state X1, the determination parameter η is set to 0 by the process of S103, and the output (supply) of the electrical energy for operating the treatment tool 2 to the treatment tool 2 is permitted. Therefore, in the state X1, when the operation button 51A is moved toward the maximum displacement position Pad and the magnetic flux density Ba becomes larger than the threshold value Bath1, electric energy for operating the treatment instrument 2 is supplied to the treatment instrument 2, and the high-frequency current is supplied. And / or ultrasonic vibration is applied to the treatment object. Further, in state X1, since output (supply) of electrical energy for operating the treatment instrument 2 to the treatment instrument 2 is permitted, either one of the operation buttons 51B and 51C is moved toward the maximum displacement position (pbd; Pcd). Even when moved, the electrical energy for operating the treatment instrument 2 is supplied to the treatment instrument 2.

As described above, in the present embodiment, when the connecting members 5 and 6 are not properly connected to each other (at a predetermined position), the magnetic flux density Br is out of a predetermined range. For this reason, when each of the sensors 41 is not arranged in a predetermined positional relationship with respect to the corresponding operation button (one corresponding to 51), output (supply) of the electrical energy for operating the treatment instrument 2 to the treatment instrument 2 ) Is prohibited, and electric energy for operating the treatment instrument 2 is not supplied to the treatment instrument 2 regardless of the operation of the operation button 51. Thereby, for example, occurrence of ultrasonic vibration in the piezoelectric element 17 in a state where the ultrasonic transducer 16 and the rod member 13 are not properly connected is effectively prevented. That is, it is effectively prevented that the treatment tool 2 is operated by the electric energy from the energy source device 3 in a state where the connecting bodies 5 and 6 are not properly connected.

In this embodiment, electrical energy for operating the treatment instrument 2 can be supplied to the treatment instrument 2 only when the connecting members 5 and 6 are appropriately attached (at predetermined positions) to each other. That is, the treatment instrument 2 can be operated only when each of the sensors 41 is arranged in a predetermined positional relationship with the corresponding operation button (one corresponding to 51). Since the treatment instrument 2 can be operated only when the connecting members 5 and 6 are appropriately attached to each other, the treatment instrument 2 appropriately performs treatment using treatment energy such as high-frequency current and / or ultrasonic vibration. Is called.

(Modification)
In a modification, the processor 21 performs the process shown in FIG. 8 in determining whether to permit the output of electrical energy for operating the treatment instrument 2. In this modification, instead of the processing of S101, the magnetic flux densities Ba to Bc in all the sensors 41 are acquired (S121). At this time, the magnetic flux densities Ba to Bc are obtained at the same time with respect to each other. Then, instead of the processing of S102, the processor 21 determines that the acquired magnetic flux densities Ba to Bc are within a predetermined range where the magnetic flux density Ba is not less than the lower limit value Bas1 and not more than the upper limit value Bas2, and the magnetic flux density Bb is lower limit. It is determined whether or not it is satisfied that the value is within a predetermined range not less than the value Bbs1 and not more than the upper limit value Bbs2 and the magnetic flux density Bc is not less than the lower limit value Bcs1 and not more than the upper limit value Bcs2 ( S122). That is, the magnetic flux density (Ba; Bb; Bc) in each of all the sensors 41A to 41C is the same as the magnetic flux density (two corresponding to Ba to Bc) in the other sensors (two corresponding to 41A to 41C). At the same time, it is determined whether or not it is within a corresponding predetermined range. In this modified example, when all the operation buttons 51 are located at the initial position Pe, when the connecting members 5 and 6 are (appropriately) attached to each other at a predetermined position, all the magnetic flux densities Ba to Bc are obtained. Each falls within the corresponding predetermined range at the same time. That is, when each of the sensors 41 is arranged in a predetermined positional relationship with respect to the corresponding operation button (one corresponding to 51), all of the magnetic flux densities Ba to Bc are simultaneously assigned to the predetermined Within range.

Here, in this modification, each of the lower limit values Bas1, Bbs1, Bcs1 and the upper limit values Bas2, Bbs2, Bcs2 is a fixed value. Further, the lower limit values Bas1, Bbs1, and Bcs1 may be the same value with respect to each other, or may be different values with respect to each other. Similarly, the upper limit values Bas2, Bbs2, and Bcs2 may be the same value with respect to each other, or may be different values with respect to each other. Therefore, the predetermined range described above may be the same range for all the magnetic flux densities Ba to Bc, or may be different for each magnetic flux density Ba to Bc.

Also in this modification, the same operation and effect as the first embodiment are exhibited. Further, when performing treatment, for example, before connecting the connectors 5 and 6, the magnetic flux density (Ba) of a certain sensor (for example, 41A) is within a predetermined range due to an external factor such as an external magnetic field. There is a possibility. However, in this modification, even if the magnetic flux density (Ba) of one sensor (for example, 41A) is within a predetermined range, the magnetic flux density (Bb; Bc) of other sensors (for example, 41B and 41C). When any of these is out of the corresponding predetermined range, the output (supply) of the electrical energy for operating the treatment instrument 2 to the treatment instrument 2 is prohibited. That is, when the magnetic flux density (one or more corresponding ones of Ba to Bc) of at least one sensor (one or more of 41A to 41C) is out of a predetermined range, the treatment is performed regardless of the operation with the operation button 51. Electric energy for operating the instrument 2 is not supplied to the treatment instrument 2. Therefore, in this modification, it is also effectively prevented that the treatment instrument 2 is operated by the electric energy from the energy source device 3 due to an external factor such as an external magnetic field in a state where the connecting members 5 and 6 are not properly connected. Is done.

In the above-described embodiment and the like, an example in which three sensors 41 are provided has been described, but the number of sensors 41 may be one or two, or four or more. In these cases, the processor 21 has the same configuration as that of the above-described embodiment and the like, and the processor 21 performs the same processing as that of the above-described embodiment. Then, by performing the same processing as in the above-described embodiment, the same operations and effects as in the above-described embodiment and the like are exhibited regardless of the number of sensors 41.

Further, in the above-described embodiment and the like, a high-frequency current and / or ultrasonic vibration is applied to the treatment target by supplying electric energy for operating the treatment tool 2 to the treatment tool 2, but the present invention is not limited to this. Absent. In a certain modification, the end effector 14 is provided with a heater, and electric energy for operating the treatment instrument 2 is supplied from the energy source device 3 to the heater. Then, by supplying electric energy to the heater, heater heat is applied to the treatment target.

In the above-described embodiment and the like, the processor (21) acquires output information from the sensor (41) that changes corresponding to the magnetic flux density (B) at the sensor (41), and outputs information from the sensor (41). Based on the above, it is determined whether or not the magnetic flux density (B) at the sensor (41) is within a predetermined range. Then, the processor (21) makes it possible to supply the treatment tool (2) with electrical energy for operating the heel and the treatment tool (2) based on at least the determination that the magnetic flux density (B) is within the predetermined range. .

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

Claims (9)

An operation input having a magnet and a sensor for detecting a magnetic flux density, and when the operation input moves with the magnet based on an operation at the operation input, the magnetic flux density at the sensor is A control device that is used with a changing treatment tool and controls the supply of electrical energy for operating the treatment tool to the treatment tool,
Obtaining output information from the sensor that changes corresponding to the magnetic flux density at the sensor;
Based on the output information from the sensor, it is determined whether the magnetic flux density at the sensor is within a predetermined range,
Enabling the electrical energy to be supplied to the treatment instrument based at least on determining that the magnetic flux density is within the predetermined range;
A control device comprising a processor. The processor, after determining that the magnetic flux density is within the predetermined range, determines whether or not the magnetic flux density has been switched from a state below the threshold value to a state where the magnetic flux density is greater than the threshold value. 1 control device. The control device according to claim 2, wherein the processor supplies the electrical energy to the treatment tool based on the determination that the magnetic flux density is switched to a state larger than the threshold value. The treatment instrument used together with the processor includes a plurality of sensors as the sensor,
The processor is
Obtaining the output information from all the sensors;
Based on the output information, for each of all the sensors, determine whether the magnetic flux density is within the corresponding predetermined range,
The electrical energy can be supplied to the treatment instrument based on the determination that the magnetic flux density of each of all the sensors is within the predetermined range corresponding to the magnetic flux density of the other sensors. To
The control device according to claim 1. The treatment tool used together with the processor includes a plurality of operation input elements as the operation input elements.
Each of the operation input elements includes the magnet, and each of the operation input elements is provided corresponding to one of the sensors,
In each of the sensors, the magnetic flux density changes as the operation input corresponding to the operation moves together with the magnet.
The control device according to claim 4. The treatment tool used with the processor is:
A first connector comprising the operation input and an end effector for treating a treatment target;
The sensor includes the sensor, is detachably attached to the first connection body, and is attached to the first connection body at a predetermined position, whereby the sensor is placed at a predetermined position with respect to the operation input element. A second connector disposed in a relationship;
The control device according to claim 1, comprising: The processor has the magnetic flux density within the predetermined range when the sensor is arranged in the predetermined positional relationship with respect to the operation input element, and the sensor is The control device according to claim 6, wherein the predetermined range is set so that the magnetic flux density deviates from the predetermined range when the magnetic flux density is not arranged in a predetermined positional relationship. In the processor, the magnetic flux density is set to the predetermined value when the second connecting member is attached to the first connecting member at the predetermined position and the operation input is not input. The control device according to claim 6, wherein the predetermined range is set in a state that falls within the range. An output source capable of outputting the electrical energy supplied to the treatment instrument;
The processor controls the supply of the electrical energy to the treatment instrument by controlling the output from the output source;
The control device according to claim 1.

Images