WO2012128362A1 - 把持処置装置 - Google Patents
把持処置装置 Download PDFInfo
- Publication number
- WO2012128362A1 WO2012128362A1 PCT/JP2012/057595 JP2012057595W WO2012128362A1 WO 2012128362 A1 WO2012128362 A1 WO 2012128362A1 JP 2012057595 W JP2012057595 W JP 2012057595W WO 2012128362 A1 WO2012128362 A1 WO 2012128362A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- jaw
- sheath
- probe
- groove
- rotation axis
- Prior art date
Links
- 239000000523 sample Substances 0.000 claims abstract description 225
- 230000002093 peripheral effect Effects 0.000 claims description 44
- 230000007423 decrease Effects 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 15
- 210000003811 finger Anatomy 0.000 description 31
- 238000003825 pressing Methods 0.000 description 31
- 230000004048 modification Effects 0.000 description 27
- 238000012986 modification Methods 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 23
- 238000010586 diagram Methods 0.000 description 14
- 230000001154 acute effect Effects 0.000 description 10
- 238000005452 bending Methods 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 9
- 230000015271 coagulation Effects 0.000 description 7
- 238000005345 coagulation Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000009210 therapy by ultrasound Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/2816—Pivots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/282—Jaws
- A61B2017/2825—Inserts of different material in jaws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320088—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with acoustic insulation, e.g. elements for damping vibrations between horn and surrounding sheath
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
- A61B2017/320093—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw additional movable means performing cutting operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
- A61B2017/320095—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw with sealing or cauterizing means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00172—Connectors and adapters therefor
- A61B2018/00178—Electrical connectors
Definitions
- the present invention relates to a grasping treatment device for grasping a grasping target such as a living tissue between a distal end portion of a probe and a jaw that opens and closes the distal end portion of the probe, and performs a treatment.
- a grasping treatment device for grasping a grasping target such as a living tissue between a distal end portion of a probe and a jaw that opens and closes the distal end portion of the probe, and performs a treatment.
- Patent Document 1 discloses an ultrasonic device that is a grasping treatment device including a probe that transmits ultrasonic waves and a jaw that opens and closes the distal end portion of the probe.
- a gripping target such as a living tissue is gripped between the tip of the probe and the jaw, and the gripping target is treated.
- Patent Document 2 discloses an ultrasonic coagulation / cutting device that is a grasping treatment device including a probe that transmits ultrasonic waves and a jaw that opens and closes the distal end of the probe.
- This ultrasonic coagulation and incision apparatus can also be used as a bipolar treatment apparatus that performs a bipolar treatment using a high-frequency current between the tip of the probe and the jaw using the tip of the probe as the first electrode and the jaw as the second electrode.
- the jaw includes a jaw main body rotatably attached to the sheath, and a wiper member attached to the jaw main body via a pin. The wiper member is rotatable with respect to the jaw body about the pin.
- the tip of the probe bends.
- the wiper member is attached to the jaw body via a pin. Even if it bends, the wiper member rotates around the pin following this bending. Therefore, the distance between the jaw and the tip of the probe becomes constant, and the object to be grasped can be grasped with uniform pressure.
- a wiper member is connected to the jaw body via a pin in order to grip a gripping target with uniform pressure. Therefore, the number of components increases, and the work of assembling the jaws becomes complicated.
- the present invention has been made paying attention to the above-mentioned problems, and an object of the present invention is to provide a grasping treatment device that can secure graspability of a grasping object between a jaw and a distal end portion of a probe with a simple configuration. It is to provide.
- a grasping treatment apparatus includes a probe extending along a longitudinal axis, a sheath through which the probe is inserted in a state in which the probe protrudes in a distal direction, It is attached to the distal end of the sheath so as to be rotatable around a rotation axis perpendicular to the longitudinal axis, and can be opened and closed in the opening / closing direction perpendicular to the longitudinal axis and perpendicular to the rotational axis with respect to the distal end of the probe.
- a support member that is provided between the probe and the sheath and prevents contact between the probe and the sheath, and the support member is located closest to the distal direction side.
- a support member including a most advanced support member whose position coincides with the rotational axis of the jaw in a direction parallel to the longitudinal axis;
- FIG. 3 is a cross-sectional view schematically showing the configuration of the vibrator unit according to the first embodiment.
- the side view which shows roughly the structure of the probe which concerns on 1st Embodiment in a partial cross section.
- Sectional drawing which shows schematically the structure inside the fixed handle which concerns on 1st Embodiment.
- Schematic which shows the electrical connection state in the vibrator
- Sectional drawing which shows schematically the state by which the probe was penetrated by the sheath which concerns on 1st Embodiment.
- FIG. 7 is a sectional view taken along line VII-VII in FIG. 6. Schematic which shows the state which the jaw which concerns on 1st Embodiment contact
- Sectional drawing which shows schematically the structure of the 1st groove
- Sectional drawing which shows schematically the structure of the 1st groove
- Sectional drawing which shows schematically the structure of the electrical contact unit which concerns on a 4th modification.
- Sectional drawing which shows schematically the structure of the 1st groove
- Sectional drawing which shows schematically the structure inside the fixed handle which concerns on a 6th modification.
- Schematic shows the medical treatment apparatus which concerns on a 1st reference example.
- Sectional drawing which shows schematically the structure of the probe and sheath unit which concern on a 1st reference example.
- the perspective view which shows schematically the structure of the jaw which concerns on a 1st reference example.
- the perspective view which shows roughly the structure of the jaw main body of the jaw which concerns on a 1st reference example.
- the perspective view which shows roughly the structure of the elastic member of the jaw which concerns on a 1st reference example.
- FIG. 33 is a sectional view taken along line 33-33 in FIG. 29;
- the perspective view which shows schematically the structure of the supporting member which concerns on a 1st reference example.
- the perspective view which shows schematically the structure of the supporting member which concerns on a 2nd reference example.
- FIG. 1 is a diagram illustrating a medical treatment apparatus 1 according to the present embodiment.
- the medical treatment apparatus 1 grips a grasp target such as a living tissue between a distal end portion of a probe 3 (described later) and a jaw 52 (described later). It is a grasping treatment device that can be treated by energy such as heat.
- the medical treatment apparatus 1 of the present embodiment is used as a bipolar treatment apparatus that performs treatment with a high-frequency current using the tip of the probe 3 and the jaw 52 as electrodes.
- the medical treatment apparatus 1 is also used as an ultrasonic treatment apparatus that performs treatment by ultrasonic vibration.
- the medical treatment apparatus 1 includes a transducer unit 2, a probe 3, a sheath unit 4, and a movable handle unit 5.
- the vibrator unit 2 includes a vibrator case 11. One end of the cable 6 is connected to the base end of the vibrator case 11. The other end of the cable 6 is connected to the power supply unit 7.
- the power supply unit 7 includes an ultrasonic control unit 8 and a high-frequency current control unit 9.
- FIG. 2 is a diagram showing the configuration of the vibrator unit 2.
- an ultrasonic transducer 12 including a piezoelectric element that converts current into ultrasonic vibration is provided inside the transducer case 11.
- One end of electric signal lines 13A and 13B is connected to the ultrasonic transducer 12.
- the electric signal lines 13 ⁇ / b> A and 13 ⁇ / b> B pass through the inside of the cable 6 and the other end is connected to the ultrasonic control unit 8 of the power supply unit 7.
- a horn 15 that expands the amplitude of the ultrasonic vibration is connected to the tip side of the ultrasonic vibrator 12.
- the horn 15 is attached to the vibrator case 11 and is electrically insulated from the vibrator case 11.
- a female screw portion 16 is formed at the tip of the horn 15.
- an electrical signal line 17 that extends from the high-frequency current control unit 9 of the power supply unit 7 through the inside of the cable 6 is connected to the ultrasonic transducer 12. .
- FIG. 3 is a diagram showing the configuration of the probe 3. As shown in FIG. 3, the probe 3 extends in a column shape along the longitudinal axis C. A male screw portion 19 is provided at the proximal end side of the probe 3. The probe 3 is attached to the horn 15 when the male screw portion 19 of the probe 3 is screwed with the female screw portion 16 of the horn 15.
- the ultrasonic vibration generated by the ultrasonic transducer 12 is transmitted to the tip of the probe 3 via the horn 15. That is, ultrasonic vibration is transmitted from the proximal end of the probe 3 to the distal end.
- the ultrasonic vibration is longitudinal vibration in which the vibration transmission direction and the vibration direction coincide with each other.
- the probe-side current of the high-frequency current from the high-frequency current control unit 9 to the tip of the probe 3 through the electric signal line 17, the ultrasonic transducer 12, and the horn 15.
- a path is formed.
- a first electrode portion 21 is provided at the distal end portion of the probe 3. That is, the high-frequency current is transmitted along the longitudinal axis C between the high-frequency current control unit 9 and the first electrode unit 21 by the probe-side current path.
- the sheath unit 4 extends along the longitudinal axis C.
- the sheath unit 4 includes a fixed handle 22 and a sheath 23 attached to the distal direction side of the fixed handle 22.
- the movable handle unit 5 includes a movable handle 25 that can be opened and closed with respect to the fixed handle 22.
- the movable handle 25 includes a movable handle ring 26 that is a movable side finger rest.
- the movable handle 25 has a first opening / closing direction (first direction) perpendicular to the longitudinal axis C shown in the direction of arrow A1 in FIG. 1 and a first opening / closing direction shown in the direction of arrow A2 in FIG.
- the fixed handle 22 can be opened and closed in a second opening / closing direction (second direction) which is the opposite direction.
- the movable handle 25 is located closer to the first opening / closing direction than the fixed handle 22.
- the axis L1 of the movable handle 25 is inclined with an acute angle ⁇ with respect to the longitudinal axis C.
- the fixed handle 22 includes a handle casing 27 that is an exterior.
- a fixed handle ring 28 serving as a fixed side finger rest is provided at a portion on the second opening / closing direction side of the handle casing 27 (fixed handle 22).
- the sheath 23 is provided on the outer peripheral direction side from the probe 3. The probe 3 is inserted into the sheath 23 with the first electrode portion 21 protruding from the sheath 23 in the distal direction.
- FIG. 4 is a diagram showing an internal configuration of the fixed handle 22.
- a cylindrical member 29 is fixed to the handle casing 27 of the fixed handle 22.
- the proximal end of the probe 3 extends to the inside of the cylindrical member 29.
- the probe 3 is attached to the horn 15 inside the cylindrical member 29.
- the probe 3 and the horn 15 are supported by the cylindrical member 29 via the insulating member 31. Thereby, the contact between the probe 3 and the horn 15 and the cylindrical member 29 is prevented, and the probe 3 and the horn 15 and the cylindrical member 29 are electrically insulated.
- An electrical connection ring 32 is provided on the outer peripheral side of the cylindrical member 29.
- the electrical connection ring 32 is provided in a state of being fixed to the handle casing 27. Further, the distal end portion of the transducer case 11 is engaged between the tubular member 29 and the electrical connection ring 32.
- the vibrator case 11 is coupled to the fixed handle 22 (sheath unit 4) by engaging the distal end portion of the vibrator case 11 between the tubular member 29 and the electrical connection ring 32. In a state where the vibrator case 11 is coupled to the fixed handle 22, the outer peripheral portion of the tip portion of the vibrator case 11 is in contact with the electrical connection ring 32, and the inner peripheral portion of the tip portion of the vibrator case 11 is the cylindrical member 29. In contact with.
- An inclined plane 33 that is inclined with respect to the longitudinal axis C is provided at a portion of the handle casing 27 (fixed handle 22) in the second opening / closing direction (the direction of arrow A2 in FIGS. 1 and 4).
- the inclined plane 33 is provided on the distal direction side with respect to the fixed handle ring 28. Further, the inclined plane 33 is located on the proximal direction side from the first opening / closing direction (the direction of arrow A1 in FIGS. 1 and 4) toward the second opening / closing direction. In other words, the inclined plane 33 is inclined upward from the distal direction side of the handle casing 27 toward the proximal direction side. Therefore, the angle between the inclined plane 33 and the longitudinal axis C has an acute angle ⁇ . This angle ⁇ is preferably 60 ° to 70 °, and more preferably 65 °.
- the inclined plane 33 is provided with input buttons 35A and 35B which are two operation input units. The operator's operation is input by pressing the input buttons 35A and 35B. The pressing direction of the input buttons 35 ⁇ / b> A and 35 ⁇ / b> B is perpendicular to the inclined plane 33.
- switch portions 37A and 37B and an electric circuit board 38 are provided on the inner circumferential direction side of the inclined plane 33.
- the switch unit 37A is switched between open and closed states by an input operation using the input button 35A.
- the switching state of the switch unit 37B is switched by an input operation with the input button 35B.
- FIG. 5 is a diagram schematically showing an electrical connection state in the vibrator case 11, the cylindrical member 29, and the electrical connection ring 32.
- three electric signal lines 39A to 39C are provided inside the handle casing 27.
- the electric signal line 39A is electrically connected to the switch unit 37A via the electric circuit board 38.
- the electric signal line 39B is electrically connected to the switch unit 37B via the electric circuit board 38.
- the electric signal line 39C is electrically connected to the switch unit 37A and the switch unit 37B via the electric circuit board 38.
- the electric signal line 39C is a common line shared as a ground line for the switch unit 37A and the switch unit 37B.
- the electrical connection ring 32 includes a first electrical connection portion 42A, a second electrical connection portion 42B, and a third electrical connection portion 42C. Between the first electrical connection part 42A and the second electrical connection part 42B, between the second electrical connection part 42B and the third electrical connection part 42C, and between the first electrical connection part 42A and the third electrical connection part.
- the connection part 42C is electrically insulated.
- the electric signal line 39A is connected to the first electric connecting portion 42A.
- the electrical signal line 39B is connected to the second electrical connection portion 42B.
- the electric signal line 39C is connected to the third electric connecting portion 42C.
- the vibrator case 11 includes a first conductive portion 43A, a second conductive portion 43B, and a third conductive portion 43C.
- the first conductive portion 43A, the second conductive portion 43B, and the third conductive portion 43C are extended along the longitudinal axis C. Between the first conductive part 43A and the second conductive part 43B, between the second conductive part 43B and the third conductive part 43C, and between the first conductive part 43A and the third conductive part 43C. are electrically insulated. In a state where the vibrator case 11 is coupled to the fixed handle 22 (sheath unit 4), only the distal end portion of the first conductive portion 43A is in electrical contact with the first electrical connection portion 42A of the electrical connection ring 32. To do.
- One end of the electric signal line 45 is connected to the base end portion of the first conductive portion 43A.
- One end of an electric signal line 46 is connected to the base end portion of the second conductive portion 43B.
- One end of an electric signal line 47 is connected to the base end portion of the third conductive portion 43C. The other ends of the electric signal lines 45 to 47 are connected to the power supply unit 7 through the inside of the cable 6.
- a first electrical signal path is formed from the switch unit 37A to the power supply unit 7 through the electrical signal line 39A, the first electrical connection unit 42A, the first conductive unit 43A, and the electrical signal line 45.
- a second electrical signal path is formed from the switch unit 37B to the power supply unit 7 through the electrical signal line 39B, the second electrical connection unit 42B, the second conductive unit 43B, and the electrical signal line 46.
- a ground path is formed from the switch unit 37A and the switch unit 37B to the power supply unit 7 through the electrical signal line 39C, the third electrical connection unit 42C, the third conductive unit 43C, and the electrical signal line 47.
- the switch unit 37A When the input button 35A is pressed, the switch unit 37A is closed, and the first electrical signal path and the ground path are electrically connected by the switch unit 37A. Thereby, an electrical signal is transmitted from the switch part 37 ⁇ / b> A to the power supply unit 7. Then, for example, current is supplied from the ultrasonic control unit 8 to the ultrasonic transducer 12 via the electric signal lines 13A and 13B, and ultrasonic vibration is generated in the ultrasonic transducer 12, and at the same time, the high-frequency current control unit 9 generates a high frequency. It is switched to a state in which current is output. Further, by pressing the input button 35B, the switch unit 37B is closed, and the second electrical signal path and the ground path are electrically connected by the switch unit 37B.
- an electrical signal is transmitted from the switch unit 37 ⁇ / b> B to the power supply unit 7.
- a high-frequency current is output only from the high-frequency current control unit 9 and the state is switched to a state where no ultrasonic vibration is generated.
- the transducer case 11 includes a fourth conductive portion 43D extending along the longitudinal axis C.
- the first conductive portion 43A, the second conductive portion 43B, and the third conductive portion 43C are all electrically insulated from the fourth conductive portion 43D.
- An electric signal line 48 extending from the high-frequency current controller 9 of the power supply unit 7 through the inside of the cable 6 is connected to the base end of the fourth conductive portion 43D. In a state where the transducer case 11 is coupled to the fixed handle 22 (sheath unit 4), only the tip end portion of the fourth conductive portion 43D is in electrical contact with the cylindrical member 29.
- one end of an electric signal line 49 is connected to the tubular member 29.
- the other end of the electric signal line 49 is connected to the sheath 23.
- a high-frequency current is transmitted between the high-frequency current control unit 9 and the sheath 23 via the electric signal line 48, the fourth conductive unit 43 ⁇ / b> D, and the electric signal line 49.
- FIG. 6 is a view showing a state in which the probe 3 is inserted through the sheath 23.
- a support member 51 is provided between the probe 3 and the sheath 23.
- the support member 51 is made of an insulating material.
- the support member 51 prevents contact between the probe 3 and the sheath 23, and the probe 3 and the sheath 23 are electrically insulated.
- the support member 51 is disposed at a node position of ultrasonic vibration. Thereby, the contact between the probe 3 and the sheath 23 is prevented more effectively.
- the number of support members 51 may be one or more, and at least one support member 51 may be provided.
- the movable handle unit 5 includes a jaw 52 rotatably attached to the distal end portion of the sheath 23 and a relay member 57 provided between the movable handle 25 and the jaw 52. By attaching the jaw 52 to the sheath 23, the movable handle unit 5 is connected to the sheath unit 4.
- the jaw 52 can be opened and closed with respect to the first electrode portion 21 provided at the distal end portion of the probe 3.
- the jaw 52 includes a second electrode portion 53 positioned on the second opening / closing direction (direction of arrow A2 in FIGS. 1 and 6) side of the first electrode portion 21 of the probe 3.
- the second electrode portion 53 is electrically connected to the sheath 23.
- a probe facing the first electrode portion 21 of the probe 3 is located on the outer surface of the second electrode portion 53 (jaw 52) on the first opening / closing direction (direction of arrow A1 in FIGS. 1 and 6) side.
- a facing portion 55 is provided.
- a jaw facing portion 58 facing the second electrode portion 53 of the jaw 52 is provided at a portion on the second opening / closing direction side of the outer surface of the first electrode portion 21 of the probe 3.
- the movable handle unit 5 rotates with the connecting portion with the sheath 23 as a rotation axis R.
- the rotation axis R is perpendicular to the longitudinal axis C and perpendicular to the first opening / closing direction and the second opening / closing direction. Therefore, by moving the movable handle 25 in the first opening / closing direction and opening the movable handle 25 with respect to the fixed handle 22, the jaw 52 moves in the second opening / closing direction. As a result, the jaw 52 is in the open position with respect to the first electrode portion 21. On the other hand, by moving the movable handle 25 in the second opening / closing direction and closing the movable handle 25 with respect to the fixed handle 22, the jaw 52 moves in the first opening / closing direction.
- the jaw 52 is in the closed position with respect to the first electrode portion 21. That is, the jaw 52 rotates with respect to the sheath 23 about the rotation axis R, thereby opening and closing the first electrode portion 21 of the probe 3 between the open position and the closed position.
- the second electrode portion 53 is electrically connected to the sheath 23. For this reason, a high frequency current is transmitted between the sheath 23 and the second electrode portion 53.
- a high frequency current is transmitted between the high frequency current control unit 9 and the sheath 23 via the electric signal line 48, the fourth conductive portion 43 ⁇ / b> D, and the electric signal line 49. Therefore, a jaw-side current path is formed from the high-frequency current controller 9 to the second electrode portion of the jaw 52 through the electrical signal line 48, the fourth conductive portion 43D, the electrical signal line 49, and the sheath 23. . That is, the high-frequency current is transmitted between the high-frequency current control unit 9 and the second electrode unit 53 through the jaw-side current path.
- an insulating coating process is performed on the outer surface of the sheath 23 and the outer surface of the jaw 52 other than the probe facing portion 55. For this reason, even when an operator's hand etc. contact the outer surface of the sheath 23 or the outer surface of the jaw 52, an electric shock is prevented.
- the relay member 57 between the jaw 52 and the movable handle 25 is made of an insulating material. This prevents high-frequency current from being transmitted from the jaw 52 to the movable handle 25.
- FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.
- the coupling position of the jaw 52 and the sheath 23 is the position of the most advanced support member 51 ⁇ / b> A that is the support member 51 located on the most distal direction side.
- FIG. 8 is a view showing a state in which the jaw 52 contacts the first electrode portion 21 of the probe 3 and a pressing force (gripping force) by the jaw 52 acts on the probe 3.
- the jaw 52 moves (rotates) in the first opening / closing direction, so that the jaw 52 performs a closing operation on the first electrode portion 21.
- part of the front end direction side from 51 A of the most advanced support members of the probe 3 bends.
- the amount of bending of the probe 3 at the position of the most advanced support member 51A in the direction parallel to the longitudinal axis C is always zero.
- the position where the amount of deflection of the probe 3 is always zero coincides with the position of the rotation axis R of the jaw 52. Therefore, when the jaw 52 comes into contact with the first electrode portion 21 of the probe 3 and the portion of the probe 3 on the distal direction side with respect to the most distal support member 51A is bent, the probe facing portion 55 of the jaw 52 is It contacts the jaw facing portion 58 without any gap. That is, a uniform pressure is applied to the jaw facing portion 58 of the probe 3 by the probe facing portion 55 of the jaw 52.
- the position of the rotation axis R of the jaw 52 and the position of the most advanced support member 51A coincide with the node position of the ultrasonic vibration.
- FIG. 9 is a view showing a state in which the probe facing portion 55 of the jaw 52 and the jaw facing portion 58 of the probe 3 are parallel to each other.
- the probe facing portion 55 of the jaw 52 is moved to the jaw facing portion of the probe 3 before contacting the first electrode portion 21 of the probe 3. It is parallel to 58 with a predetermined distance D. That is, when the probe facing portion 55 of the jaw 52 and the jaw facing portion 58 of the probe 3 are parallel, the probe facing portion 55 is separated from the jaw facing portion 58 by a predetermined distance D.
- the electrical contact unit 60 has a function as a connecting portion for connecting the sheath 23 and the jaw 52 in order to rotate the jaw 52 with respect to the sheath 23 around the rotation axis R.
- the electrical contact unit 60 is provided with a first groove-shaped portion 61A and a second groove-shaped portion 61B in a state where the jaw 52 is recessed in the outer peripheral direction along the rotation axis R.
- the first groove-like portion 61A is recessed toward the first rotation axis direction (direction of arrow B1 in FIG. 7) parallel to the rotation axis R.
- the second groove-like portion 61B is recessed toward the second rotation axis direction (the direction of the arrow B2 in FIG. 7), which is the direction opposite to the first rotation axis direction.
- the first groove-shaped portion 61A is defined by the first groove defining portion 62A
- the second groove-shaped portion 61B is defined by the second groove defining portion 62B.
- the electrical contact unit 60 is provided with a first protrusion 63A and a second protrusion 63B on the outer peripheral portion of the sheath 23 in a state of protruding in the outer peripheral direction along the rotation axis R.
- the first protrusion 63A protrudes in the first rotation axis direction
- the second protrusion 63B protrudes in the second rotation axis direction.
- the first protrusion 63A is inserted into the first groove 61A
- the second protrusion 63B is inserted into the second groove 61B.
- FIG. 10 is a diagram showing the configuration of the first groove defining portion 62A and the first projecting portion 63A.
- the configuration of the second groove defining portion 62B is the same as the configuration of the first groove defining portion 62A.
- the configuration of the second projection 63B is the same as the configuration of the first projection 63A. Therefore, the description of the second groove defining portion 62B and the second protrusion 63B is omitted.
- the first groove defining portion 62 ⁇ / b> A includes a groove side surface 65 and a groove bottom surface 67.
- the first protrusion 63A includes a protruding end 69.
- the first protrusion 63A is inserted into the first groove 61A with a gap between the first protrusion 63A and the groove side surface 65.
- a sheath side contact portion 71 is located at the protruding end 69. That is, the sheath side contact portion 71 is provided on the outer peripheral portion of the sheath 23.
- the jaw side contact portion 73 is located on the groove bottom surface 67 of the first groove defining portion 62A of the jaw 52.
- the jaw side contact portion 73 is provided on the inner peripheral portion of the jaw 52.
- the jaw side contact portion 73 is slidably in contact with the sheath side contact portion 71.
- a high frequency current is transmitted between the sheath 23 and the second electrode portion 53 of the jaw 52.
- FIG. 11 is a view showing the sheath 23 and the jaw 52 in a state where the jaw 52 is not attached to the sheath 23.
- the first dimension T1 along the rotation axis R from the longitudinal axis C to the sheath side contact portion 71 is It becomes larger than the second dimension T2 along the rotation axis R to the side contact portion 73.
- the jaw side contact portion 73 and the sheath side contact portion 71 Is always kept in contact with each other. Therefore, a state where a high-frequency current is always transmitted between the sheath 23 and the second electrode portion 53 of the jaw 52 is maintained.
- the first protrusion 63 ⁇ / b> A includes a protrusion-side hemisphere portion 75 provided in a hemispherical shape along the rotation axis R up to the sheath-side contact portion 71.
- the protrusion-side hemispherical portion 75 is a protrusion-side cross-section changing portion in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the protruding end 69 of the first protrusion 63A.
- the protrusion-side hemispherical portion 75 reduces the contact area between the sheath-side contact portion 71 and the jaw-side contact portion 73.
- FIG. 12 is a view showing a state where the operator has gripped the fixed handle 22 and the movable handle 25 during the treatment with the medical treatment apparatus 1.
- the ring finger F4 is hung on the fixed handle ring 28 of the fixed handle 22.
- the thumb F ⁇ b> 1 is hung on the movable handle ring 26 of the movable handle 25.
- the index finger F2 and the middle finger F3 are extended in a state inclined with respect to the longitudinal axis C. That is, the extending direction of the index finger F2 and the middle finger F3 is inclined with respect to the longitudinal axis C.
- the jaw 52 opens and closes the first electrode portion 21 of the probe 3 by opening and closing the movable handle 25 with respect to the fixed handle 22. Thereby, a living tissue is grasped between the first electrode portion 21 of the probe 3 and the second electrode portion 53 of the jaw 52. Then, in a state where the fixed handle 22 and the movable handle 25 are gripped, an input operation is performed with the input buttons 35A and 35B which are operation input units. Generation of ultrasonic vibration and supply of high-frequency current are performed by an input operation using the input buttons 35A and 35B.
- the high-frequency current control unit 9 switches to a state in which high-frequency current is output.
- a living tissue such as a grasped blood vessel is incised by frictional heat generated by ultrasonic vibration of the probe 3.
- the high-frequency current flows through the living tissue between the first electrode unit 21 and the second electrode unit 53, so that the living tissue is solidified.
- a high-frequency current is output only from the high-frequency current control unit 9, and the state is switched to a state in which no ultrasonic vibration is generated. At this time, the living tissue between the first electrode portion 21 and the second electrode portion 53 is not incised, and only coagulation by high-frequency current is performed.
- the position of the pivot shaft of the jaw does not coincide with the position of the most advanced support member in the direction parallel to the longitudinal axis. For this reason, in the direction parallel to the longitudinal axis, the position where the amount of bending of the probe is always zero does not coincide with the position of the rotation axis of the jaw. Therefore, when the jaw comes into contact with the distal end portion (first electrode portion) of the probe and the portion on the distal direction side of the distal end support member of the probe is bent, there is a gap between the jaw and the distal end portion of the probe. Arise. In particular, a large gap is formed on the distal direction side from the contact position between the jaw and the distal end portion of the probe.
- a probe 3A, a sheath 23A, and a jaw 52A are considered as shown in FIG. Also in this comparative example, in the direction parallel to the longitudinal axis C, the position where the bending amount of the probe 3A is always zero does not match the position of the rotation axis R of the jaw 52A.
- the jaw 52A includes a jaw body 81 that is rotatably attached to the sheath 23A, and a wiper member 83 that is attached to the jaw body 81 via a pin 82. The wiper member 83 is rotatable with respect to the jaw main body 81 around the pin 82.
- the thermal conductivity between the jaw main body 81 and the wiper member 83 is lowered, so that the thermal conductivity from the jaw 52A toward the proximal direction side is lowered. For this reason, the jaw 52A is deformed by thermal expansion, and the gripping ability of the living tissue between the jaw 52A and the first electrode portion 21 of the probe 3A is lowered.
- a probe 3B, a sheath 23B, and a jaw 52B are considered as a second comparative example.
- the position of the rotation axis R of the jaw 52B coincides with the position of the most advanced support member 51A in the direction parallel to the longitudinal axis C, as in the first embodiment. For this reason, in the direction parallel to the longitudinal axis C, the position where the amount of bending of the probe 3B is always zero coincides with the position of the rotation axis R of the jaw 52B.
- the probe facing portion 55 of the jaw 52B when the probe facing portion 55 of the jaw 52B is in contact with the first electrode portion 21 of the probe 3B, the probe facing portion 55 of the jaw 52B is opposed to the jaw facing portion 58 of the probe 3B. Parallel. That is, when the probe facing portion 55 of the jaw 52B and the jaw facing portion 58 of the probe 3B are parallel, the probe facing portion 55 does not have a gap between the jaw facing portion 58.
- the living tissue S is grasped between the first electrode portion 21 of the probe 3B and the second electrode portion 53 of the jaw 52B. At this time, the living tissue S is contacted from the proximal end side portion of the probe facing portion 55 of the jaw 52B. For this reason, at the time of the treatment of the living tissue S, there is a possibility that the distal end side portion of the probe facing portion 55 of the jaw 52B is not in contact.
- the probe facing portion 55 of the jaw 52 is moved before contacting the first electrode portion 21 of the probe 3. It is desirable to be parallel to the jaw facing portion 58 of the probe 3 with a predetermined distance D. That is, in a state where the probe facing portion 55 of the jaw 52 and the jaw facing portion 58 of the probe 3 are parallel, it is desirable that the probe facing portion 55 is separated from the jaw facing portion 58 by a predetermined distance D.
- the fixed handle extends in a direction away from the longitudinal axis.
- the movable handle can be opened and closed with respect to the fixed handle in a direction substantially parallel to the longitudinal axis.
- the movable handle 25 has a first opening / closing direction (direction of arrow A1 in FIG. 1) perpendicular to the longitudinal axis C and a second direction opposite to the first opening / closing direction. Can be opened and closed with respect to the fixed handle 22 in the opening / closing direction (direction of arrow A2 in FIG. 1).
- the movable handle 25 is located closer to the first opening / closing direction than the fixed handle 22.
- the positions of the input buttons 35A and 35B are limited. That is, it is necessary to provide the input buttons 35 ⁇ / b> A and 35 ⁇ / b> B on the second opening / closing direction side portion of the fixed handle 22 extending along the longitudinal axis C and on the distal direction side of the fixed handle ring 28.
- the fixed handle 22C as shown in FIG. 17 as a third comparative example.
- the fixed handle 22 ⁇ / b> C extends along the longitudinal axis C similarly to the fixed handle 22 of the present embodiment.
- Input buttons 35A and 35B are provided on the second opening / closing direction side of the fixed handle 22C and on the distal direction side of the fixed handle ring 28.
- the axis L1 of the movable handle 25 is inclined with an acute angle ⁇ with respect to the longitudinal axis C.
- the fixed handle 22C is not provided with the inclined flat surface 33.
- the pressing direction of the input buttons 35A and 35B coincides with the radial direction of the fixed handle 22C.
- the pressing direction of the input buttons 35A and 35B is perpendicular to the longitudinal axis C.
- the sheath unit 4 and the probe 3 including the fixed handle 22C are likely to vibrate perpendicularly to the longitudinal axis C by the pressed force. For this reason, the position of the tip of the probe 3 and the jaw 52 is difficult to be determined at the time of treatment, and workability at the time of treatment is lowered.
- a fixed handle 22D is considered as shown in FIG.
- the fixed handle 22D has the same configuration as the fixed handle 22C of the third comparative example, except that the pressing directions of the input buttons 35A and 35B are different.
- the pressing direction of the input buttons 35A and 35B is parallel to the longitudinal axis C.
- the sheath unit 4 and the probe 3 including the fixed handle 22D vibrate perpendicularly to the longitudinal axis C by the pressed force. hard.
- the configuration in which the input buttons 35A and 35B are pressed in parallel with the longitudinal axis C as described above is also used in the ultrasonic treatment apparatus of Patent Document 1.
- the index finger F2 and the middle finger F3 are extended while being inclined with respect to the longitudinal axis C. That is, the extending direction of the index finger F2 and the middle finger F3 is inclined with respect to the longitudinal axis C.
- the input operation with the input buttons 35A and 35B is performed with the index finger F2.
- the pressing direction of the input buttons 35A and 35B is parallel to the longitudinal axis C. For this reason, the extending direction of the index finger F2 and the pressing direction of the input buttons 35A and 35B are not parallel.
- an inclined plane 33 inclined with respect to the longitudinal axis C is provided at a portion on the second opening / closing direction side of the handle casing 27 (fixed handle 22).
- the inclined plane 33 is inclined upward from the distal direction side of the handle casing 27 toward the proximal direction side. Further, the inclined plane 33 is provided on the distal direction side from the fixed handle ring 28.
- the inclined plane 33 is provided with input buttons 35A and 35B which are two operation input units.
- the pressing direction of the input buttons 35 ⁇ / b> A and 35 ⁇ / b> B is perpendicular to the inclined plane 33. As described above, in this embodiment, the pressing direction of the input buttons 35A and 35B is not perpendicular to the longitudinal axis C.
- the extending direction of the index finger F2 is substantially perpendicular to the inclined plane 33. That is, the inclined plane 33 is a plane that is substantially perpendicular to the extending direction of the index finger F2 in the gripped state. That is, the extending direction of the index finger F2 is substantially parallel to the pressing direction of the input buttons 35A and 35B. Therefore, even when the fixed handle 22 and the movable handle 25 are gripped, the input buttons 35A and 35B can be easily pressed. As a result, in a state where the fixed handle 22 and the movable handle 25 are gripped, the operation can be easily performed with the input buttons 35A and 35B which are operation input units.
- an electrical contact unit 60E is considered as a fifth comparative example as shown in FIG.
- the electrical contact unit 60 ⁇ / b> E is a groove-like portion 61 ⁇ / b> A provided in a state where the jaw 52 ⁇ / b> E is recessed along the rotation axis R in the outer peripheral direction, like the electrical contact unit 60 of the first embodiment. , 61B.
- the electrical contact unit 60E includes protrusions 63A and 63B provided on the outer peripheral portion of the sheath 23E in a state of protruding in the outer peripheral direction along the rotation axis R.
- the first protrusion 63A is engaged with the first groove 61A
- the second protrusion 63B is engaged with the second groove 61B. That is, the protrusions 63A and 63B are engaged with the groove portions 61A and 61B in a state where there is no gap between the protrusions 63A and 63B. Therefore, the protrusions 63A and 63B of the electric contact unit 60E do not include the protrusion-side hemisphere portion 75 provided in a hemispherical shape along the rotation axis R up to the sheath-side contact portion 71.
- the electric contact unit 60E Since the protrusions 63A and 63B are engaged with the groove portions 61A and 61B, the electric contact unit 60E is held in a state where the jaw side contact portion 73 and the sheath side contact portion 71 are always in contact with each other. Therefore, a state where a high-frequency current is always transmitted between the sheath 23E and the second electrode portion 53 of the jaw 52E is maintained.
- the frictional resistance between the sheath 23E and the jaw 52E is increased by the engagement between the protrusions 63A and 63B and the groove portions 61A and 61B of the jaw. Due to the increase in frictional resistance, the driving force required for the opening / closing operation of the jaw 52E increases, and the workability during the opening / closing operation of the jaw 52E decreases.
- an electrical contact unit 60F is considered as shown in FIG.
- the electrical contact unit 60 ⁇ / b> F is a groove-like portion 61 ⁇ / b> A provided in a state where the jaw 52 ⁇ / b> F is recessed along the rotation axis R in the outer peripheral direction, similarly to the electrical contact unit 60 of the first embodiment. , 61B.
- the electrical contact unit 60F includes protrusions 63A and 63B that are provided on the outer periphery of the sheath 23F so as to protrude in the outer peripheral direction along the rotation axis R.
- the first protrusion 63A is inserted into the first groove 61A
- the second protrusion 63B is inserted into the second groove 61B.
- the protrusions 63A and 63B are inserted into the groove parts 61A and 61B in a state where a gap is provided between the protrusion parts 63A and 63B and the groove defining parts 62A and 62B that define the groove parts 61A and 61B.
- the groove defining portions 62A and 62B of the jaw 52F can move relative to the protrusions 63A and 63B by the dimension of the gap.
- the protrusions 63A and 63B of the electric contact unit 60E do not include the protrusion-side hemisphere 75 provided in a hemisphere along the rotation axis R.
- Friction resistance between the sheath 23F and the jaw 52F is reduced by the gap between the protrusions 63A and 63B and the groove defining portions 62A and 62B.
- the gap is provided between the projections 63A and 63B and the groove defining portions 62A and 62B, the sheath 23F and the jaw 52F are not always in contact with each other. . For this reason, the high-frequency current is not always transmitted between the sheath 23F and the jaw 52F. Therefore, the stability of high-frequency current transmission between the sheath 23F and the jaw 52F is reduced.
- the protrusions 63A and 63B are inserted into the groove portions 61A and 61B with a gap between the groove defining portions 62A and 62B.
- the sheath side contact part 71 is located in the protrusion end 69 of protrusion part 63A, 63B, and the jaw side contact part 73 is located in the groove bottom face 67 of groove
- the first dimension T1 along the rotation axis R from the longitudinal axis C to the sheath side contact portion 71 is the rotation from the longitudinal axis C to the jaw side contact portion 73.
- the protrusions 63A and 63B include a protrusion-side hemisphere portion 75 provided in a hemispherical shape along the rotation axis R up to the sheath-side contact portion 71.
- the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the protruding ends 69 of the protrusions 63A and 63B. That is, the contact area between the sheath side contact portion 71 and the jaw side contact portion 73 is reduced by the projection side hemisphere portion 75.
- the sheath side contact portion 71 is provided on the outer peripheral portion of the sheath 23.
- the jaw side contact portion 73 is provided on the inner peripheral portion of the jaw 52. For this reason, the sheath side contact portion 71 and the jaw side contact portion 73 are not exposed to the outer surface of the sheath 23 and the outer surface of the jaw 52. Therefore, even if the operator's hand or the like contacts the outer surface of the distal end portion of the sheath or the outer surface of the jaw, the operator does not get an electric shock. Further, with such a configuration, it is not necessary to perform an insulating coating on the portions such as the protrusions 63A and 63B and the groove defining portions 62A and 62B that are difficult to be coated.
- the medical treatment device 1 configured as described above has the following effects. That is, in the medical treatment device 1 (bipolar treatment device) of the present embodiment, the sheath side contact portion 71 is located at the projecting ends 69 of the protrusions 63A and 63B, and the jaw side is located on the groove bottom surface 67 of the groove defining portions 62A and 62B. The contact part 73 is located. In a state in which the jaw 52 is not attached to the sheath 23, the first dimension T1 along the rotation axis R from the longitudinal axis C to the sheath side contact portion 71 is the rotation from the longitudinal axis C to the jaw side contact portion 73. It becomes larger than the second dimension T2 along the movement axis R.
- the protrusions 63A and 63B are inserted into the groove portions 61A and 61B in a state where there is a gap between the groove defining portions 62A and 62B.
- the protrusions 63A and 63B include a protrusion-side hemispherical portion 75 provided in a hemispherical shape along the rotation axis R up to the sheath-side contact portion 71. In the projection-side hemisphere 75, the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the protruding ends 69 of the protrusions 63A and 63B.
- the contact area between the sheath side contact portion 71 and the jaw side contact portion 73 is reduced by the projection side hemisphere portion 75.
- the frictional resistance between the sheath 23 and the jaw 52 decreases. Thereby, the driving force required for the opening / closing operation of the jaw 52 is reduced, and the workability in the opening / closing operation of the jaw 52 can be improved.
- the sheath side contact portion 71 is provided on the outer peripheral portion of the sheath 23.
- the jaw side contact portion 73 is provided on the inner peripheral portion of the jaw 52. For this reason, the sheath side contact portion 71 and the jaw side contact portion 73 are not exposed to the outer surface of the sheath 23 and the outer surface of the jaw 52. Therefore, even when the operator's hand or the like contacts the outer surface of the distal end portion of the sheath 23 or the outer surface of the jaw 52, the operator's electric shock can be prevented.
- the medical treatment device 1 (bipolar treatment device) can be easily manufactured, the manufacturing time can be shortened, and the manufacturing cost can be reduced.
- the position of the rotation axis R of the jaw 52 coincides with the position of the most advanced support member 51A in the direction parallel to the longitudinal axis C. That is, in the direction parallel to the longitudinal axis C, the position where the amount of bending of the probe 3 is always zero coincides with the position of the rotational axis R of the jaw 52. Therefore, when the jaw 52 comes into contact with the first electrode portion 21 of the probe 3 and the portion of the probe 3 on the distal direction side with respect to the most distal support member 51A is bent, the probe facing portion 55 of the jaw 52 is It contacts the jaw facing portion 58 without any gap.
- the entire probe facing portion 55 of the jaw 52 comes into contact with the living tissue S uniformly. Thereby, force is uniformly applied to the living tissue S grasped between the first electrode portion 21 and the second electrode portion 53. Accordingly, the treatment (incision) of the living tissue S is more efficiently performed between the first electrode portion 21 (the tip portion of the probe 3) and the second electrode portion 53 (the jaw 52) using energy such as ultrasonic vibration. )It can be performed. Further, with such a configuration, it is not necessary to form the jaw 52 from the jaw main body (81) and the wiper member (83) rotatably attached to the jaw main body (81). That is, the jaw 52 can be formed integrally. For this reason, the heat generated when the object to be grasped (living tissue) is treated (incised) can be efficiently conducted to the proximal direction side.
- the support member 51 including the most advanced support member 51A is disposed at a node position of ultrasonic vibration. Thereby, the contact between the probe 3 and the sheath 23 can be more effectively prevented.
- the probe facing portion of the jaw 52 is brought into contact with the first electrode portion 21 of the probe 3 during the closing operation of the jaw 52 with respect to the first electrode portion 21.
- 55 is parallel to the jaw facing portion 58 of the probe 3 with a predetermined distance D. That is, when the probe facing portion 55 of the jaw 52 and the jaw facing portion 58 of the probe 3 are parallel, the probe facing portion 55 is separated from the jaw facing portion 58 by a predetermined distance D.
- the entire probe facing portion 55 of the jaw 52 comes into contact with the living tissue S uniformly. Thereby, force is uniformly applied to the living tissue S grasped between the first electrode portion 21 and the second electrode portion 53. Accordingly, the treatment (incision) of the living tissue S is more efficiently performed between the first electrode portion 21 (the tip portion of the probe 3) and the second electrode portion 53 (the jaw 52) using energy such as ultrasonic vibration. )It can be performed.
- an inclined plane 33 that is inclined with respect to the longitudinal axis C is provided at a portion on the second opening / closing direction side of the handle casing 27 (fixed handle 22).
- the inclined plane 33 is provided on the distal direction side with respect to the fixed handle ring 28.
- the inclined plane 33 is provided with input buttons 35A and 35B which are two operation input units.
- the pressing direction of the input buttons 35 ⁇ / b> A and 35 ⁇ / b> B is perpendicular to the inclined plane 33. With this configuration, the pressing direction of the input buttons 35A and 35B is not perpendicular to the longitudinal axis C.
- the sheath unit 4 including the fixed handle 22 and the probe 3 to vibrate perpendicularly to the longitudinal axis C due to the pressed force. Therefore, the position of the tip portion of the probe 3 and the jaw 52 can be easily determined at the time of treatment.
- the extending direction of the index finger F ⁇ b> 2 and the middle finger F ⁇ b> 3 becomes substantially perpendicular to the inclined plane 33 when the operator holds the medical treatment apparatus 1. That is, the extending direction of the index finger F2 is substantially parallel to the pressing direction of the input buttons 35A and 35B. Therefore, the input buttons 35A and 35B can be easily pressed even when the fixed handle 22 and the movable handle 25 are gripped. Thereby, in a state where the fixed handle 22 and the movable handle 25 are gripped, the operation can be easily performed with the input buttons 35A and 35B which are operation input units.
- the protrusions 63A and 63B include the protrusion-side hemisphere portion 75 provided in a hemispherical shape along the rotation axis R up to the sheath-side contact portion 71, but is not limited thereto.
- the first projection 63A is a projection provided in a tapered shape along the rotation axis R up to the sheath-side contact portion 71.
- a side taper portion 77 may be provided.
- the protrusion-side taper portion 77 is a protrusion-side cross-section changing portion in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the protruding end 69 of the first protrusion 63A.
- the protrusion-side taper portion 77 reduces the contact area between the sheath-side contact portion 71 and the jaw-side contact portion 73.
- the second protrusion 63B is provided with a protrusion-side taper part 77.
- the first protrusion 63A protrudes from the protrusion side taper part 78 provided in a taper shape along the rotation axis R and the protrusion side taper part 78.
- a columnar portion 79 provided along the rotation axis R may be provided on the end 69 side to the sheath side contact portion 71.
- the protrusion-side taper portion 78 is a protrusion-side cross-section changing portion in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the protruding end 69 of the first protrusion 63A.
- the cross-sectional area perpendicular to the rotation axis R is constant.
- the contact area between the sheath side contact portion 71 and the jaw side contact portion 73 is reduced by the projection side taper portion 78.
- the second protrusion 63B is also provided with a protrusion-side taper part 78.
- the groove portions 61A and 61B provided in the jaw 52 in a state of being recessed in the outer peripheral direction along the rotation axis R are provided. It is defined by the groove defining portions 62A and 62B. And the jaw side contact part 73 is located in the groove bottom face 67 of groove
- Protrusions 63 ⁇ / b> A and 63 ⁇ / b> B are provided on the outer peripheral portion of the sheath 23 so as to protrude in the outer peripheral direction along the rotation axis R. The protrusions 63A and 63B are inserted into the groove portions 61A and 61B.
- each protrusion part 63A, 63B is provided with the protrusion side cross-section change part (75, 77, 78) from which the cross-sectional area perpendicular
- the contact area between the sheath-side contact portion 71 and the jaw-side contact portion 73 is reduced by the protrusion-side cross-section changing portions (75, 77, 78).
- the structure which is not provided with the protrusion side cross-sectional change part (75, 77, 78) may be sufficient.
- the first groove defining portion 62A has a groove bottom surface 67 in a state where the jaw side contact portion 73 protrudes toward the protruding end 69 of the first protruding portion 63A.
- the jaw side contact portion 73 and the sheath side contact portion 71 are always in contact with each other. Held in.
- the second groove defining portion 62B is provided with a convex portion 85.
- the protrusion side cross-section changing portion (75, 77, 78) is not provided.
- the convex portions 85 of the groove defining portions 62 ⁇ / b> A and 62 ⁇ / b> B include groove-side hemispherical portions 87 provided in a hemispherical shape along the rotation axis R up to the jaw-side contact portion 73.
- the groove-side hemisphere portion 87 is a groove-side cross-section changing portion in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the jaw-side contact portion 73. The contact area between the sheath side contact portion 71 and the jaw side contact portion 73 is reduced by the groove side hemisphere portion 87.
- the groove-side cross-sectional change portion is the groove-side hemisphere portion 87, but is not limited thereto.
- the groove-side cross-section changing portion (87) may be provided in a tapered shape along the rotation axis R up to the jaw-side contact portion 73. Further, the groove-side cross-section changing portion (87) does not need to extend to the jaw-side contact portion 73. That is, in the groove-side cross-section changing portion (87), the cross-sectional area perpendicular to the rotation axis R only needs to decrease along the rotation axis R toward the jaw-side contact portion 73.
- the groove-shaped portions 61A and 61B provided in the jaw 52 in a state of being recessed in the outer peripheral direction along the rotation axis R are defined by the groove defining portions 62A and 62B.
- the jaw side contact part 73 is located in the groove bottom face 67 of groove
- Protrusions 63 ⁇ / b> A and 63 ⁇ / b> B are provided on the outer peripheral portion of the sheath 23 so as to protrude in the outer peripheral direction along the rotation axis R.
- the protrusions 63A and 63B are inserted into the groove portions 61A and 61B.
- each of the groove defining portions 62A and 62B includes a convex portion 85 that defines the groove bottom surface 67 so that the jaw side contact portion 73 protrudes toward the protruding end 69 of the protruding portions 63A and 63B.
- the convex portion 85 includes a groove-side cross-section changing portion (87) in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the jaw-side contact portion 73. The contact area between the sheath side contact portion 71 and the jaw side contact portion 73 is reduced by the groove side cross-sectional change portion (87).
- the protrusion side cross-section changing portion (75, 77, 78) or the groove side cross-section changing portion (87) is provided.
- both the protrusion side cross-section changing portion (75, 77, 78) and the groove side cross-section changing portion (87) may be provided. That is, it is only necessary to provide at least one of the protrusion side cross-section changing portion (75, 77, 78) and the groove side cross-section changing portion (87).
- the jaw 52 is provided with groove-like portions 61A and 61B that are recessed in the outer peripheral direction
- the sheath 23 is provided with the protruding portions 63A and 63B that protrude in the outer peripheral direction.
- the electrical contact unit 60 may not include the groove-like portions 61A and 61B and the protrusions 63A and 63B.
- the electrical contact unit 60 is provided with the first groove-like portion 91A and the second groove-like portion 91B in the outer circumferential portion of the sheath 23 in a state of being recessed in the inner circumferential direction along the rotation axis R. It has been.
- the first groove-like portion 91A is recessed toward the first rotation axis direction (direction of arrow B1 in FIG. 24) parallel to the rotation axis R.
- the second groove-like portion 91B is recessed toward the second rotation axis direction (the direction of the arrow B2 in FIG. 24) which is the direction opposite to the first rotation axis direction.
- the first groove-shaped portion 91A is defined by the first groove defining portion 92A
- the second groove-shaped portion 91B is defined by the second groove defining portion 92B.
- the electric contact unit 60 is provided with a first protrusion 93A and a second protrusion 93B in a state in which the jaw 52 protrudes in the inner circumferential direction along the rotation axis R.
- the first protrusion 93A protrudes toward the first rotation axis
- the second protrusion 93B protrudes toward the second rotation axis.
- the first protrusion 93A is inserted into the first groove 91A
- the second protrusion 93B is inserted into the second groove 91B.
- FIG. 25 is a diagram showing the configuration of the first groove defining portion 92A and the first projecting portion 93A.
- the configuration of the second groove defining portion 92B is the same as the configuration of the first groove defining portion 92A.
- the configuration of the second projection 93B is the same as the configuration of the first projection 93A. Therefore, the description of the second groove defining portion 92B and the second projecting portion 93B is omitted.
- the first groove defining portion 92A includes a groove side surface 95 and a groove bottom surface 97.
- the first projecting portion 93 ⁇ / b> A includes a projecting end 99.
- the first protrusion 93A is inserted into the first groove 91A with a gap between the first protrusion 93A and the groove side surface 95.
- the jaw side contact portion 73 is located. That is, the jaw side contact portion 73 is provided on the inner peripheral portion of the jaw 52.
- the sheath side contact portion 71 is located on the groove bottom surface 97 of the first groove defining portion 92A of the sheath 23.
- the sheath side contact portion 71 is provided on the outer peripheral portion of the sheath 23.
- the jaw side contact portion 73 is slidably in contact with the sheath side contact portion 71.
- a high frequency current is transmitted between the sheath 23 and the second electrode portion 53 of the jaw 52.
- FIG. 26 is a view showing the sheath 23 and the jaw 52 in a state where the jaw 52 is not attached to the sheath 23.
- the first dimension T1 along the rotation axis R from the longitudinal axis C to the sheath side contact portion 71 is from the longitudinal axis C to the jaw. It becomes larger than the second dimension T2 along the rotation axis R to the side contact portion 73.
- the first protrusion 93 ⁇ / b> A includes a protrusion-side hemisphere 101 provided in a hemisphere along the rotation axis R up to the jaw-side contact portion 73.
- the protrusion-side hemisphere portion 101 is a protrusion-side cross-section changing portion in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the protruding end 99 of the first protrusion 93A.
- the protrusion-side hemisphere 101 reduces the contact area between the sheath-side contact portion 71 and the jaw-side contact portion 73.
- the protrusion-side cross-section changing portion is the protrusion-side hemispherical portion 101, but is not limited thereto.
- the protrusion-side cross-section changing portion (101) may be provided in a tapered shape along the rotation axis R up to the jaw-side contact portion 73. Further, the protrusion-side cross-section changing portion (101) does not need to extend to the jaw-side contact portion 73. That is, in the protrusion-side cross-section changing portion (101), the cross-sectional area perpendicular to the rotation axis R only needs to decrease along the rotation axis R toward the jaw-side contact portion 73 (projecting end 99).
- the groove-shaped portions 91A and 91B provided in the outer peripheral portion of the sheath 23 in a state of being recessed in the inner peripheral direction along the rotation axis R are defined by the groove defining portions 92A and 92B.
- the sheath side contact portion 71 is positioned on the groove bottom surface 97 of the groove defining portions 92A and 92B.
- the jaws 52 are provided with protrusions 93A and 93B in a state of protruding in the inner circumferential direction along the rotation axis R.
- the protrusions 93A and 93B are inserted into the groove-like portions 91A and 91B.
- each protrusion part 93A, 93B is provided with the protrusion side cross-section change part (101) from which the cross-sectional area perpendicular
- the contact area between the sheath-side contact portion 71 and the jaw-side contact portion 73 is reduced by the protrusion-side cross-section changing portion (101).
- the protrusion side cross-section changing portion (101) may not be provided.
- the first groove defining portion 92A has a groove bottom surface 97 in a state where the sheath side contact portion 71 protrudes toward the protruding end 99 of the first protruding portion 93A.
- the jaw side contact portion 73 and the sheath side contact portion 71 are always in contact with each other.
- the second groove defining portion 92B is provided with a convex portion 103.
- the protrusion side cross-section changing portion (101) is not provided.
- the convex portions 103 of the groove defining portions 92 ⁇ / b> A and 92 ⁇ / b> B include a groove-side hemispherical portion 105 provided in a hemispherical shape along the rotation axis R up to the sheath-side contact portion 71.
- the groove-side hemisphere portion 105 is a groove-side cross-section changing portion in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the sheath-side contact portion 71.
- the contact area between the sheath side contact portion 71 and the jaw side contact portion 73 is reduced by the groove side hemisphere portion 105.
- the groove-side cross-section changing portion is the groove-side hemispherical portion 105, but is not limited to this.
- the groove-side cross-section changing portion (105) may be provided in a tapered shape along the rotation axis R up to the sheath-side contact portion 71. Further, the groove-side cross-section changing portion (105) does not need to extend to the sheath-side contact portion 71. That is, in the groove-side cross-section changing portion (105), the cross-sectional area perpendicular to the rotation axis R only needs to be reduced along the rotation axis R toward the sheath-side contact portion 71.
- the groove-shaped portions 91A and 91B provided in the outer peripheral portion of the sheath 23 in a state of being recessed in the inner peripheral direction along the rotation axis R are defined by the groove defining portions 92A and 92B.
- the sheath side contact portion 71 is positioned on the groove bottom surface 97 of the groove defining portions 92A and 92B.
- the jaws 52 are provided with protrusions 93A and 93B in a state of protruding in the inner circumferential direction along the rotation axis R.
- the protrusions 93A and 93B are inserted into the groove-like portions 91A and 91B.
- each of the groove defining portions 92A and 92B includes a convex portion 103 that defines the groove bottom surface 97 so that the sheath side contact portion 71 protrudes toward the protruding end 99 of the protruding portions 93A and 93B.
- the convex portion 103 includes a groove-side cross-section changing portion (105) in which the cross-sectional area perpendicular to the rotation axis R decreases along the rotation axis R toward the sheath-side contact portion 71. The contact area between the sheath side contact portion 71 and the jaw side contact portion 73 is reduced by the groove side cross-sectional change portion (105).
- channel side cross-section change part (105) is provided, it is not restricted to this.
- both the protrusion-side cross-section change portion (101) and the groove-side cross-section change portion (105) may be provided. That is, it is only necessary to provide at least one of the protrusion-side cross-section change portion (101) and the groove-side cross-section change portion (105).
- the jaw 52 is directly attached to the sheath 23, and a connecting pin or the like for connecting the sheath 23 and the jaw 52 is not provided.
- the jaw 52 is connected to the sheath 23 via the connecting pin. Even when mounted, it is applicable.
- the single inclined plane 33 is provided at the second opening / closing direction side portion of the handle casing 27 (fixed handle 22), but the present invention is not limited to this.
- the first inclined plane 33A and the second inclined plane 33B are disposed on the second handle in the second opening / closing direction (the direction of arrow A2 in FIG. 27B). May be provided.
- the first inclined plane 33A and the second inclined plane 33B are located on the proximal direction side in the second opening / closing direction from the first opening / closing direction (the direction of arrow A2 in FIG. 27B).
- the first inclined plane 33 ⁇ / b> A and the second inclined plane 33 ⁇ / b> B are provided closer to the distal direction side than the fixed handle ring 28.
- the second inclined plane 33B is located on the proximal direction side of the first inclined plane 33A.
- the acute first angle ⁇ 1 between the first inclined plane 33A and the longitudinal axis C is different from the acute second angle ⁇ 2 between the second inclined plane 33B and the longitudinal axis C.
- the first angle ⁇ 1 is larger than the second angle ⁇ 2.
- the first angle ⁇ 1 is preferably 60 ° to 70 °, and more preferably 65 °.
- the second angle ⁇ 2 is preferably 40 ° to 50 °, and more preferably 45 °.
- a first input button (first operation input unit) 35A that is one of the two operation input units is provided on the first inclined plane 33A, and a second input button (second input) that is the other of the operation input units.
- An operation input unit) 35B is provided on the second inclined plane 33B.
- the pressing direction of the first input button 35A is perpendicular to the first inclined plane 33A.
- the pressing direction of the second input button 35B is perpendicular to the second inclined plane 33B.
- the input operation with the input buttons 35A and 35B is performed with the index finger F2. Therefore, by providing the inclined surfaces 33A and 33B, the extending direction of the index finger F2 is substantially perpendicular to the inclined planes 33A and 33B in a state where the fixed handle 22 and the movable handle 25 are gripped. That is, the extending direction of the index finger F2 is substantially parallel to the pressing direction of the input buttons 35A and 35B. Therefore, even when the fixed handle 22 and the movable handle 25 are gripped, the input buttons 35A and 35B can be easily pressed.
- the extending direction of the index finger F2 changes between the state of pressing the first input button 35A and the state of pressing the second input button 35B. Therefore, in this modification, the first input button 35A is provided on the first inclined plane 33A in which the acute angle with the longitudinal axis C is the first angle ⁇ 1, and the acute angle with the longitudinal axis C is the first.
- the second input button 35B is provided on the second inclined plane 33B smaller than the angle ⁇ 1. That is, in the second inclined plane 33B located on the proximal direction side of the first inclined plane 33A, the acute angle with the longitudinal axis C is smaller than that in the first inclined plane 33A.
- the pressing direction of the first input button 35A is perpendicular to the first inclined plane 33A
- the pressing direction of the second input button 35B is perpendicular to the second inclined plane 33B.
- the pressing direction of the first input button 35A is substantially parallel to the extending direction of the index finger F2. It becomes.
- the second input button 35B is pressed with the index finger F2 while the fixed handle 22 and the movable handle 25 are gripped, the pressing direction of the second input button 35B is substantially parallel to the extending direction of the index finger F2. Become. Accordingly, the extending direction of the index finger F2 between the state in which the first input button 35A is pressed and the state in which the second input button 35B is pressed can cope with the change, and the fixed handle 22 and the movable handle 25 are gripped.
- the input buttons 35A and 35B can be pressed more easily.
- the input buttons 35A and 35B which are operation input units, can be operated more easily.
- FIG. 28 is a diagram illustrating the medical treatment apparatus 110 according to the first reference example.
- the medical treatment apparatus 110 includes a transducer unit 112, a probe 113, a sheath unit 114, and a handle unit 115.
- the transducer unit 112 has the same configuration as the transducer unit 2 of the first embodiment, and generates ultrasonic vibrations.
- the probe 113 has the same configuration as the probe 3 of the first embodiment, and transmits ultrasonic vibration from the proximal end to the distal end.
- the sheath unit 114 includes a sheath 116 into which the probe 113 is inserted, and a jaw 117 attached to the distal end portion of the sheath 116.
- the jaw 117 is rotatable with respect to the sheath 116 via a connecting pin 118.
- the jaw 117 rotates with respect to the sheath 116 around the rotation axis R (the connecting pin 118), so that the jaw 117 performs an opening / closing operation with respect to the distal end portion of the probe 3.
- the handle unit 115 includes a cylindrical case 121, a fixed handle 122 provided integrally with the cylindrical case 121, and a movable handle 123 that can be opened and closed with respect to the fixed handle 122. Unlike the first embodiment, the movable handle 123 opens and closes the fixed handle 122 substantially parallel to the longitudinal axis C.
- the living tissue is grasped between the distal end portion of the probe 113 and the jaw 117. Then, the living tissue is incised by ultrasonic vibration. Further, a bipolar treatment using a high-frequency current is also performed using the tip of the probe 113 and the jaw 117 as an electrode.
- FIG. 29 is a diagram showing the configuration of the probe 113 and the sheath unit 114.
- the sheath 116 includes an outer pipe 125 and an inner pipe 126.
- a movable member 127 is provided between the outer pipe 125 and the inner pipe 126.
- a jaw 117 is attached to the distal end portion of the outer pipe 125 via a connecting pin 118.
- the tip of the movable member 127 is connected to the jaw 117 via a connection pin 129.
- the movable handle 123 is connected to the movable member 127 of the sheath 116 via a relay member (not shown).
- the movable member 127 moves along the longitudinal axis C by opening and closing the movable handle 123 with respect to the fixed handle 122.
- the jaw 117 rotates with respect to the sheath 116 about the rotation axis R (the connection pin 118). Accordingly, the jaw 117 performs an opening / closing operation with respect to the distal end portion of the probe 113.
- FIG. 30 is a diagram showing a configuration of the jaw 117.
- the jaw 117 includes a jaw main body 131 formed of metal and an elastic member 132 attached to the jaw main body 131.
- FIG. 31A is a diagram showing a configuration of the jaw main body 131.
- the jaw main body 131 includes a groove-shaped portion 133 along the axis L ⁇ b> 2 of the jaw 117.
- the groove 133 has dimensions in the width direction (direction of arrow E2 in FIGS. 30 and 31A) perpendicular to the axis L2 and perpendicular to the opening / closing direction of the jaw 117 (direction of arrow E1 in FIGS. 30 and 31A).
- a wide portion 135 is formed, which increases.
- the dimension in the width direction of the wide portion 135 is U1.
- the dimension of the width direction of parts other than the wide part 135 of the groove-shaped part 133 is set to U2.
- the jaw body 131 is formed with a through hole 138 that penetrates the jaw body 131 in the width direction.
- the through hole 138 communicates with the groove-shaped portion 133 at a position closer to the distal direction than the wide portion 135.
- FIG. 31B is a diagram showing a configuration of the elastic member 132.
- the elastic member 132 includes a protrusion 136 that protrudes in the width direction (the direction of the arrow E2 in FIG. 31B).
- the dimension in the width direction of the elastic member 132 at the portion where the protrusion 136 is located in the direction parallel to the axis L2 is U3.
- the dimension U3 is smaller than the dimension U1 and larger than the dimension U2.
- the width direction is a direction perpendicular to the axis L2 of the jaw 117 and perpendicular to the opening / closing direction of the jaw 117 (the direction of the arrow E1 in FIG. 31B).
- the protrusion 136 is not provided over the entire length of the elastic member 132 in the opening / closing direction of the jaw 117. That is, the protrusion 136 is provided only over a certain size range from the end of the elastic member 132 opposite to the probe 113 toward the probe 113.
- the elastic member 132 When attaching the elastic member 132 to the jaw main body 131, the elastic member 132 is inserted into the groove-shaped portion 133 of the jaw main body 131. At this time, the protrusion 136 is positioned in the wide portion 135 in the direction parallel to the axis L2. Then, the elastic member 132 is moved relative to the jaw body 131 in the distal direction along the axis L2. Due to the movement of the elastic member 132, the protruding portion 136 moves to a site communicating with the through hole 138 of the groove-like portion 133. Then, the protrusion 136 is inserted into the through hole 138. Inside the through hole 138, the side surface portion of the protrusion 136 is in contact with the jaw body 131 without a gap.
- the protrusion 136 is prevented from coming off from the through hole 138. Therefore, the elastic member 132 is prevented from being detached from the groove-shaped portion 133, and the elastic member 132 is firmly fixed to the groove-shaped portion 133. Then, the jaw body 131 and the elastic member 132 are coupled via the connection pin 137.
- a probe protection member 141 is attached to the inner peripheral portion of the distal end portion of the sheath 116. As shown in FIG.
- the probe protection member 141 is made of an insulating material.
- the probe protection member 141 is provided with a gap between the probe protection member 141 and the probe 113.
- the probe protection member 141 prevents contact between the probe 113 and the sheath 116. Further, the insulation state between the probe 113 and the sheath 116 is maintained by the probe protection member 141.
- FIG. 32 is a diagram showing a configuration of the probe protection member 141.
- FIG. 33 is a sectional view taken along line 33-33 of FIG.
- the probe protection member 141 includes a groove-like portion 142 that is recessed in the inner circumferential direction.
- the connecting pin 118 that connects the sheath 116 and the jaw 117 passes through the jaw 117 and the sheath 116, and is provided in a state of protruding in the inner peripheral direction from the inner peripheral portion of the sheath 116.
- the probe protection member 141 is attached to the sheath 116 by the coupling pin 118 engaging with the groove-like portion 142.
- the probe protection member 141 is attached in a state of being positioned in a direction parallel to the longitudinal axis C. By positioning the probe protection member 141 in the direction parallel to the longitudinal axis C, contact between the probe 113 and the probe protection member 141 is effectively prevented.
- a support member 145 that supports the probe 113 is provided on the outer periphery of the probe 113.
- the support member 145 is disposed at the node position of the ultrasonic vibration. This more effectively prevents contact between the probe 113 and the sheath 116 (inner pipe 126). Further, the support member 145 prevents the probe 113 from bending. Note that the number of support members 145 may be one or more, and it is sufficient that at least one support member 145 is provided.
- FIG. 34 is a diagram showing the configuration of the support member 145.
- the support member 145 is formed in a substantially C shape from a material softer than the probe 113.
- the support member 145 includes a groove-shaped portion 146 and an opening 147.
- the probe 113 is inserted into the groove-like portion 146 of the support member 145 from the opening 147.
- the support member 145 is attached to the outer peripheral portion of the probe 113.
- the inner diameter of the support member 145 is smaller than the outer diameter of the probe 113.
- the support member 145 when the support member 145 is attached to the outer periphery of the probe 113, the support member 145 is firmly fixed to the probe 113. As described above, since the support member 145 is attached to the probe 113, the support member 145 is easily supported as compared with the case where the support member 145 is formed integrally with the probe 113 by rubber lining the outer periphery of the probe 113, for example. A member 145 is attached to the probe 113.
- the support member 145 does not have to be formed in a substantially C shape.
- the support member 145 may be formed in a substantially cylindrical shape.
- a cavity 148 is formed inside the support member 145.
- a notch 149 is provided from the outer periphery to the cavity 148.
- a fixed handle provided with a fixed-side finger rest and extending along the longitudinal axis;
- a movable handle that includes a movable finger rest and that can be opened and closed with respect to the fixed handle in a first opening / closing direction perpendicular to the longitudinal axis and in a second opening / closing direction opposite to the first opening / closing direction;
- a movable handle located closer to the first opening / closing direction than the fixed handle;
- An inclined plane provided at a position on the distal direction side of the fixed-side finger rest and at a position on the second opening / closing direction side of the fixed handle and inclined with respect to the longitudinal axis, An inclined plane located on the proximal direction side as it goes from the opening and closing direction to the second opening and closing direction,
- An operation input unit that is provided on the inclined plane and whose pressing direction is perpendicular to the inclined surface;
- a medical treatment apparatus comprising:
- the operation input unit includes a first operation input unit and a second operation input unit
- the inclined plane includes the first operation input unit, the first inclined plane perpendicular to the pressing direction of the first operation input unit, the second operation input unit, and the second operation input unit.
- the acute angle first angle between the first inclined plane and the longitudinal axis is greater than the acute second angle between the second inclined plane and the longitudinal axis. Medical treatment device.
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Abstract
Description
本発明の第1の実施形態について図1乃至図20を参照して説明する。図1は、本実施形態の医療用処置装置1を示す図である。この医療用処置装置1は、プローブ3(後述する)の先端部とジョー52(後述する)との間で生体組織等の把持対象を把持し、把持した把持対象を、例えば、超音波、高周波、熱等のエネルギーによって処置可能な把持処置装置である。なお、本実施形態の医療用処置装置1は、プローブ3の先端部及びジョー52を電極として高周波電流による処置を行うバイポーラ処置装置として用いられる。また、医療用処置装置1は、超音波振動による処置を行う超音波処置装置としても用いられる。図1に示すように、医療用処置装置1は、振動子ユニット2と、プローブ3と、シースユニット4と、可動ハンドルユニット5とを備える。
なお、第1の実施形態では、突起部63A,63Bは、シース側接触部71まで回動軸Rに沿って半球状に設けられる突起側半球部75を備えるが、これに限るものではない。例えば第1の変形例として図21に示すように、突起側半球部75の代わりに、第1の突起部63Aは、シース側接触部71まで回動軸Rに沿ってテーパ状に設けられる突起側テーパ部77を備えてもよい。突起側テーパ部77は、回動軸Rに沿って第1の突起部63Aの突出端69に向かうにつれて回動軸Rに垂直な断面積が減少する突起側断面変化部である。突起側テーパ部77により、シース側接触部71とジョー側接触部73との接触面積を減少させている。第2の突起部63Bについても第1の突起部63Aと同様に、突起側テーパ部77が設けられている。
図28は、第1の参照例に係る医療用処置装置110を示す図である。図28に示すように、医療用処置装置110は、振動子ユニット112と、プローブ113と、シースユニット114と、ハンドルユニット115とを備える。振動子ユニット112は、第1の実施形態の振動子ユニット2と同様の構成であり、超音波振動を発生させる。プローブ113は、第1の実施形態のプローブ3と同様の構成であり、超音波振動を基端から先端へ伝達する。
記
(付記項1)
固定側指置き部を備え、長手軸に沿って延設される固定ハンドルと、
可動側指置き部を備え、前記長手軸に垂直な第1の開閉方向及び前記第1の開閉方向とは反対方向である第2の開閉方向に前記固定ハンドルに対して開閉可能な可動ハンドルであって、前記固定ハンドルより前記第1の開閉方向側に位置している可動ハンドルと、
前記固定側指置き部より先端方向側の部位で、かつ、前記固定ハンドルの前記第2の開閉方向側の部位に設けられ、前記長手軸に対して傾斜する傾斜平面であって、前記第1の開閉方向から前記第2の開閉方向に向かうにつれて、基端方向側に位置している傾斜平面と、
前記傾斜平面に設けられ、押圧方向が前記傾斜面に対して垂直である操作入力部と、
を具備する医療用処置装置。
前記操作入力部は、第1の操作入力部と、第2の操作入力部と、を備え、
前記傾斜平面は、前記第1の操作入力部が設けられ、前記第1の操作入力部の押圧方向に垂直な第1の傾斜平面と、前記第2の操作入力部が設けられ、前記第2の操作入力部の押圧方向に垂直な第2の傾斜平面であって、前記第1の傾斜平面より前記基端方向側に位置する第2の傾斜平面と、を備える、
付記項1の医療用処置装置。
前記第1の傾斜平面と前記長手軸との間の鋭角の第1の角度は、前記第2の傾斜平面と前記長手軸との間の鋭角の第2の角度より、大きい、付記項2の医療用処置装置。
Claims (9)
- 長手軸に沿って延設されるプローブと、
前記プローブが先端方向に突出する状態で前記プローブが挿通されるシースと、
前記シースの先端部に前記長手軸に垂直な回動軸を中心に回動可能に取付けられ、前記プローブの先端部に対して前記長手軸に垂直かつ前記回動軸に垂直な開閉方向に開閉可能なジョーと、
前記プローブと前記シースとの間に設けられ、前記プローブと前記シースとの間の接触を防止する支持部材と、
を具備し、
前記支持部材は、最も前記先端方向側に位置する前記支持部材であって、前記長手軸に平行な方向について前記ジョーの前記回動軸と位置が一致する最先端支持部材を含む、把持処置装置。 - 前記プローブの前記先端部は、前記ジョーと対向するジョー対向部を備え、
前記ジョーは、前記プローブの前記先端部と対向するプローブ対向部を備え、
前記ジョーの前記プローブ対向部と前記プローブの前記ジョー対向部とが平行な状態では、前記プローブ対向部は前記ジョー対向部から所定距離だけ離れている、請求項1の把持処置装置。 - 前記プローブは、基端から先端へ前記長手軸に沿って超音波振動を伝達し、
前記長手軸に平行な前記方向について、前記ジョーの前記回動軸の位置及び前記軸位置支持部材の位置は、前記超音波振動の節位置と一致している、請求項1の把持処置装置。 - 前記プローブは、前記先端部に設けられる第1の電極部を備え、前記長手軸に沿って高周波電流を伝達し、
前記シースは、前記プローブより外周方向側に前記プローブとの間が絶縁した状態で設けられ、前記第1の電極部が先端方向に突出する状態で前記プローブが挿通され、
前記ジョーは、前記シースと電気的に接続される第2の電極部を備え、前記第1の電極部に対して前記開閉方向に開閉可能である、請求項1の把持処置装置。 - 前記シースの外周部に設けられるシース側接触部と、前記ジョーの内周部に設けられ、前記シース側接触部に摺動可能に接触するジョー側接触部と、を備え、前記ジョー側接触部と前記シース側接触部との間を常に接触させた状態で保持することにより、前記シースと前記ジョーの前記第2の電極部との間で常に前記高周波電流が伝達される状態を保持する電気接触ユニットを、さらに具備し、
前記電気接触ユニットは、
前記ジョーに前記回動軸に沿って外周方向に凹んだ状態で設けられる溝状部を規定する溝規定部であって、前記ジョー側接触部が位置する溝底面を備える溝規定部と、前記シースの前記外周部に前記回動軸に沿って前記外周方向に突出した状態で設けられ、前記溝状部に挿入される突起部であって、前記シース側接触部が位置する突出端を備える突起部と、を備えるか、
又は、
前記シースの前記外周部に前記回動軸に沿って内周方向に凹んだ状態で設けられる溝状部を規定する溝規定部であって、前記シース側接触部が位置する溝底面を備える溝規定部と、前記ジョーに前記回動軸に沿って前記内周方向に突出した状態で設けられ、前記溝状部に挿入される突起部であって、前記ジョー側接触部が位置する突出端を備える突起部と、を備えるか、
であり、
前記突起部は、前記回転軸に沿って前記突出端に向かうにつれて前記回転軸に垂直な断面積が減少し、前記シース側接触部と前記ジョー側接触部との接触面積を減少させる突起側断面変化部を備えるか、
及び、
前記溝規定部は、前記シース側接触部又は前記ジョー側接触部が前記突起部の前記突出端に向かって突出する状態に前記溝底面を規定する凸部を備え、
前記凸部は、前記回転軸に沿って前記シース側接触部又は前記ジョー側接触部に向かうにつれて前記回転軸に垂直な断面積が減少し、前記シース側接触部と前記ジョー側接触部との接触面積を減少させる溝側断面変化部を備えるか、
の少なくともいずれか一方である、請求項4の把持処置装置。 - 前記シースに前記ジョーが取付けられていない状態では、前記長手軸から前記シース側接触部までの前記回転軸に沿った第1の寸法が、前記長手軸から前記ジョー側接触部までの前記回転軸に沿った第2の寸法より大きい、請求項5の把持処置装置。
- 前記溝規定部は、前記回動軸に平行な第1の回動軸方向に向かって凹む第1の溝状部を規定する第1の溝規定部と、前記第1の回動軸方向とは反対方向である第2の回動軸方向に向かって凹む第2の溝状部を規定する第2の溝規定部と、を含み、
前記突起部は、前記第1の回動軸方向に向かって突出し、前記第1の溝状部に挿入される第1の突起部と、前記第2の回動軸方向に向かって突出し、前記第2の溝状部に挿入される第2の突起部と、を含む、請求項5の把持処置装置。 - 前記突起側断面変化部は、前記シース側接触部又は前記ジョー側接触部まで前記回転軸に沿って半球状に設けられる突起側半球部である請求項5の把持処置装置。
- 前記溝側断面変化部は、前記シース側接触部又は前記ジョー側接触部まで前記回転軸に沿って半球状に設けられる溝側半球部である請求項5の把持処置装置。
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CN201280002944.1A CN103108600B (zh) | 2011-03-24 | 2012-03-23 | 把持处理装置 |
JP2012544994A JP5165163B2 (ja) | 2011-03-24 | 2012-03-23 | 把持処置装置 |
EP12761381.8A EP2589347B1 (en) | 2011-03-24 | 2012-03-23 | Grasping treatment device |
US13/633,653 US8652132B2 (en) | 2011-03-24 | 2012-10-02 | Grasping treatment device |
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EP (1) | EP2589347B1 (ja) |
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- 2012-03-23 EP EP12761381.8A patent/EP2589347B1/en not_active Not-in-force
- 2012-10-02 US US13/633,653 patent/US8652132B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
US20130110155A1 (en) | 2013-05-02 |
EP2589347A1 (en) | 2013-05-08 |
EP2589347B1 (en) | 2015-09-09 |
JPWO2012128362A1 (ja) | 2014-07-24 |
CN103108600B (zh) | 2015-07-22 |
US8652132B2 (en) | 2014-02-18 |
JP5165163B2 (ja) | 2013-03-21 |
EP2589347A4 (en) | 2013-05-08 |
CN103108600A (zh) | 2013-05-15 |
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