JP2017148096A - Endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope capable of reducing a time and labor taken for washing/disinfection processes of a distal end body of an insertion section.SOLUTION: A stand drive mechanism part 58 of a stand unit 42 and a power output part 60 of a distal end body 40 are disposed via a partition wall 62. The endoscope includes a contactless type power transmission device 64 for contactlessly transmitting a power output from the power output part 60 via the partition wall 62 to the stand drive mechanism part 58. Accordingly, when the distal end body 40 is washed, the partition wall 62 has no penetration hole in which a wire is inserted so as to improve washing/disinfection properties of the distal end body 40. Further, when the stand unit 42 is washed, the stand unit 42 is removed from the distal end body 40 to be independently washed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an endoscope, and more particularly, to an endoscope provided with a treatment instrument stand that changes a direction in which a treatment instrument is led out at a distal end portion of an insertion portion.

  In an endoscope, various treatment instruments are introduced from a treatment instrument introduction port provided in a hand operation section (hereinafter referred to as “operation section”), and the treatment instrument is opened at the distal end of the insertion section. Derived from the device outlet to the outside and used for treatment. For example, a duodenoscope uses a treatment tool such as a guide wire or a contrast tube, and an ultrasonic endoscope uses a treatment tool such as a puncture needle. A treatment tool is used. Such a treatment tool needs to change the derivation direction at the distal end portion in order to treat a desired position in the subject. For this reason, a treatment instrument stand (hereinafter referred to as “stand stand”) is provided at the distal end, and the endoscope has a treatment instrument that changes the posture of the stand between the standing position and the lying position. A standing mechanism is provided.

  As a treatment instrument standing mechanism, a wire pulling type mechanism in which a tip of a pulling wire is directly attached to a stand is known (see Patent Document 1). In this mechanism, the base end of the pulling wire is connected to an operating lever provided in the operation unit, and the stand is rotated around the rotation axis by pushing and pulling the pulling wire with the operating lever. The posture is changed between and. As another wire pulling mechanism, a forceps table support member and a forceps table (stand) are provided on a cover member that detachably covers a forceps table storage chamber formed at the distal end of the endoscope. The thing is known (refer patent document 2).

JP2015-104424A JP-A-57-75629

  By the way, the endoscope is cleaned and disinfected using a cleaning liquid and a disinfecting liquid every time it is used for various examinations and treatments. At this time, the distal end main body of the insertion portion provided with the stand is downsized and the shape thereof is complicated. Sex is required.

  In particular, in the endoscopes of Patent Documents 1 and 2, the exit opening of the through hole formed in the distal end portion body into which the wire for raising the stand is inserted is exposed to the outside. Blood, water, and the like enter the through hole. In this case, cleaning is performed by inserting a cleaning brush into the gap between the inner wall surface of the through hole and the wire. However, since the gap is small, there is a problem that it takes time and labor to clean and disinfect the gap.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an endoscope that can reduce the time and labor required for cleaning and disinfecting the distal end main body of the insertion portion.

  In order to achieve the object of the present invention, an endoscope according to the present invention includes an insertion portion having a distal end and a proximal end, a distal end main body provided on the distal end side of the insertion portion, and a detachable attachment to the distal end main body. A stand unit having a treatment instrument stand and a stand drive mechanism for driving the treatment instrument stand, a power output unit provided in the tip body, and a tip part A partition provided in the main body, which is provided between the power output unit and the stand unit, and transmits the power output from the power output unit to the stand drive mechanism unit in a non-contact manner via the partition. A non-contact power transmission device.

  According to the present invention, the upright stand drive mechanism portion and the power output portion of the upright stand unit are arranged via the partition wall, so that the penetration wire for the upright stand that has been conventionally formed in the partition wall is inserted. The hole is lost. And according to this invention, since it has the non-contact-type power transmission device which transmits the motive power output from the motive power output part to the stand drive mechanism part via the partition, it outputs from the motive power output part. The treatment instrument stand can be driven by the generated power. Also, when cleaning the distal end main body of the insertion section, there is no through hole through which the wire is inserted in the partition wall, so that the cleaning and disinfection with respect to the distal end body is improved, and when the stand unit is cleaned Since the stand unit can be removed from the tip body and cleaned individually, the cleaning and disinfection of the stand unit is improved. Therefore, according to the present invention, it is possible to reduce the time and labor required for cleaning and disinfecting the distal end main body of the insertion portion.

  In one embodiment of the present invention, the power output unit includes an electric power transmission unit, and the stand drive mechanism unit receives the electric power transmitted from the electric power transmission unit via the partition, and the electric power reception unit receives the electric power. And a drive unit that is activated by the generated power and drives the treatment instrument stand.

  According to one aspect of the present invention, the power transmitted from the power transmission unit of the power output unit is received by the power receiving unit of the stand driving mechanism, and the treatment instrument stand is driven by the drive unit activated by the power. To drive.

  In one aspect of the present invention, the power transmission unit preferably includes a first coil and a power supply unit that supplies power to the first coil, and the power reception unit preferably includes a second coil.

  According to one aspect of the present invention, when power is supplied from the power supply unit to the first coil, a current flows through the second coil due to the action of electromagnetic induction, and the drive unit is activated by this current.

  In one aspect of the present invention, the drive unit is a linear motion unit that is driven in a linear direction by the power received by the power power reception unit, and a power transmission that transmits a linear driving force of the linear motion unit to the treatment instrument stand. And a member.

  According to one aspect of the present invention, the drive unit is driven in a linear direction by the electric power received by the power receiving unit, and the linear driving force is transmitted to the treatment instrument stand through the power transmission unit. The tool stand is driven.

  In one aspect of the present invention, the drive unit includes a rotating unit that is rotationally driven by the power received by the power receiving unit, and a power transmission member that transmits the rotational driving force of the rotating unit to the treatment instrument stand. Is preferred.

  According to one aspect of the present invention, the rotating unit is rotationally driven by the power received by the power receiving unit, and this rotational driving force is transmitted to the treatment instrument stand through the power transmission unit, so that the treatment instrument stand is To drive.

  In one aspect of the present invention, the power output unit includes a first rotation shaft, the stand drive mechanism includes a second rotation shaft, and the first rotation shaft and the second rotation shaft are connected to the first rotation shaft and the first rotation shaft. It is preferable to provide a magnetic gear device that connects the two rotating shafts magnetically in a non-contact manner via a partition wall and transmits the rotational force of the first rotating shaft to the second rotating shaft.

  According to one aspect of the present invention, the magnetic gear device connects the first rotating shaft and the second rotating shaft in a magnetic non-contact manner via the partition wall, so that the through hole through which the wire is disposed is provided in the partition wall. Without this, the rotational force transmitted from the power source to the first rotation shaft can be transmitted to the second rotation shaft, and the treatment instrument stand can be driven by the rotation of the second rotation shaft.

  According to one aspect of the present invention, a magnetic gear device is provided on a first rotating shaft and has a first magnetic force generation surface, and is provided on a second rotating shaft and generates a first magnetic force of the first magnetic gear. And a second magnetic gear having a second magnetic force generation surface opposed to the surface.

  According to one aspect of the present invention, torque transmitted from the power source to the first rotating shaft can be efficiently transmitted to the second rotating shaft.

  In one aspect of the present invention, the stand unit has a unit main body having a wall portion for forming a storage space therein, and the stand driving mechanism is stored in the storage space of the unit main body. Preferably, the treatment instrument stand is disposed, and the stand drive mechanism and the treatment instrument stand are coupled to each other via a shaft that is disposed through the wall of the unit body.

  According to the aspect of the present invention, since the upright stand driving mechanism is accommodated in the accommodation space of the unit body, the upright stand driving mechanism can be protected from the outside.

  In one embodiment of the present invention, it is preferable that the storage space of the stand unit is sealed from the outside air.

  According to one aspect of the present invention, it is not necessary to clean and disinfect the stand drive mechanism housed in the housing space.

  According to the endoscope of the present invention, it is possible to reduce the time and labor required for the cleaning / disinfecting process for the distal end body.

Side view showing the overall configuration of the endoscope according to the first embodiment. Assembly perspective view showing the configuration of the distal end portion of the insertion portion Front view of the tip body Assembly perspective view of the stand unit Side view of the stand unit of the first embodiment in which the stand is in the standing position Side view of the stand unit of the first embodiment in which the stand is in the lying position Side view of the stand unit of the second embodiment in which the stand is in the standing position Side view of the stand unit of the second embodiment in which the stand is in the lying position Explanatory drawing which showed the principal part structure of the stand unit of 3rd Embodiment. The perspective view with which the stand unit of 4th Embodiment was mounted | worn with the front-end | tip part main body. The perspective view which showed the internal structure through the unit main body of the stand unit shown in FIG. Assembly perspective view of the stand unit shown in FIG.

  Hereinafter, preferred embodiments of an endoscope according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a side view showing an overall configuration of an endoscope 10 according to an embodiment of the present invention.

[Overall configuration of endoscope 10]
The endoscope 10 is an endoscope for side view, and includes an insertion portion 12 that is inserted into the body of a subject, and an operation portion 14 is connected to the proximal end side of the insertion portion 12. A universal cord 16 is connected to the operation unit 14, and the endoscope 10 is connected to a light source device, an image processing device, and an air / water supply device (not shown) via the universal cord 16.

<Whole structure of the insertion part 12>
The insertion portion 12 has a distal end and a proximal end, and is configured by connecting the distal end portion 18, the bending portion 20, and the flexible portion 22 from the distal end side toward the proximal end side. Inside the insertion portion 12, a treatment instrument insertion channel 24 (see FIG. 2) for guiding the treatment instrument to the distal end portion 18, and a current for changing the derivation direction of the treatment instrument derived from the distal end portion 18 as a power output unit 68 (see FIG. 5), a cable 26 (see FIG. 2) to be supplied, a light guide (not shown) for guiding the illumination light supplied from the light source device to the distal end portion 18, and air supplied from the air / water supply device An air / water supply tube (not shown) for guiding water to the tip end portion 18 is inserted.

<Configuration of operation unit 14>
The operation unit 14 is provided with power output via a cable 26 (see FIG. 2) by rotating between the angle knobs 28 and 28 for bending the bending unit 20 and the standing instruction position and the lying instruction position. An operation lever 30 for supplying a current to the section 68 (see FIG. 5), an air / water feed button 32 for ejecting air and water from an air / water feed nozzle 64 (see FIG. 2) provided at the distal end section 18, and a distal end section. A suction button 34 for sucking a body fluid such as blood from a suction port (not shown) provided in 18 is provided at a predetermined position.

  The operation unit 14 is provided with a treatment instrument introduction port 36 for introducing various treatment instruments. The treatment instrument introduced from the treatment instrument introduction port 36 is disposed on the distal end portion 18 (see FIG. 2) via the treatment instrument insertion channel 24 (see FIG. 2) inserted into the insertion section 12. ) To the outside.

<Configuration of the bending portion 20>
The bending portion 20 has a structure in which a plurality of angle rings (not shown) are connected to each other so as to be rotatable. The bending portion 20 is configured by covering the outer periphery of the structure with a cylindrical net knitted with a metal wire, and covering the outer peripheral surface of the net with a rubber outer skin. In addition, a plurality of wires (not shown) are disposed from the angle knobs 28 and 28 of the operation unit 14 to the bending portion 20, and the tips of these wires are fixed to the tip portions of the angle rings constituting the bending portion 20. Has been. Accordingly, the bending portion 20 is bent vertically and horizontally by pushing and pulling these wires by the turning operation of the angle knobs 28 and 28.

<Configuration of the soft part 22>
The flexible part 22 has a spiral tube formed by spirally winding a thin metal strip having elasticity. The flexible portion 22 is configured by covering the outer surface of the spiral tube with a cylindrical net knitted with a metal wire, and covering the outer peripheral surface of the net with a resin outer skin.

<Configuration of the tip 18>
FIG. 2 is an assembled perspective view showing the configuration of the tip 18. The distal end portion 18 includes a stainless-steel distal end main body 40 having a treatment instrument outlet 38, an upright unit 42 that is detachably attached to the distal end main body 40, and a distal end main body 40 that is attached to the distal end main body 40. And a cap 44 covering 40. The distal end body 40 is provided on the distal end side of the insertion portion 12. Further, the stand unit 42 is detachably attached to the distal end body 40 by fitting a box 46 projecting on the proximal end side into an opening 48 formed on the distal end side of the distal end body 40. It is attached to.

  The cap 44 is configured in a substantially cylindrical shape whose tip side is sealed, and a substantially rectangular opening window 44A is formed in a part of the outer peripheral surface thereof. When the cap 44 is attached to the distal end main body 40, the treatment instrument outlet 38 is communicated with the outside air through the opening window 44A. Thereby, the upright stand accommodating chamber 50 is communicated with the outside air through the treatment instrument outlet 38 and the opening window 44A. The cap 44 is made of an elastic material such as fluorine rubber or silicon rubber. The cap 44 has an engagement portion (not shown) that engages with a groove (not shown) formed in the distal end portion main body 40 on the proximal end side, and the distal end portion by engaging the engagement portion with the groove. The main body 40 is detachably mounted.

<Configuration of tip body 40>
FIG. 3 is a front view of the tip body 40. As shown in FIGS. 2 and 3, the tip body 40 is made of a metal material such as stainless steel, which is a non-magnetic material and has corrosion resistance. Further, the tip end body 40 is integrally provided with a partition wall 52 projecting from the tip end side. An upright stand unit 42 is mounted on the distal end main body 40 so as to face the partition wall 52, and an upright stand 56 is placed between the substantially rectangular plate-like main body 54 of the standup unit 42 and the partition wall 52. 50 is formed. A treatment instrument outlet 38 for leading the treatment instrument to the outside is formed on the upper surface side of the upright stand accommodating chamber 50 in the drawing.

  The tip of the treatment instrument insertion channel 24 communicates with the upright stand accommodating chamber 50. The proximal end of the treatment instrument insertion channel 24 is inserted into the insertion section 12 and connected to the treatment instrument introduction port 36 of the operation section 14. As a result, the treatment instrument introduced from the treatment instrument introduction port 36 to the proximal end of the treatment instrument insertion channel 24 is guided from the distal end of the treatment instrument insertion channel 24 to the stand support chamber 50 via the treatment instrument insertion channel 24. The

  An upright table 56 is accommodated in the upright table storage chamber 50, and this upright table 56 is a treatment instrument stand for changing the direction of the treatment instrument led out from the treatment instrument outlet 38.

  As shown in FIG. 3, an optical system accommodation chamber 58 is provided on the opposite side of the upright stand accommodation chamber 50 across the partition wall 52. The optical system accommodation chamber 58 is kept airtight by covering the tip body 40 with a protective plate (not shown).

  As shown in FIG. 2, an illumination window 60 and an observation window 62 are disposed adjacent to each other at the upper part of the optical system accommodation chamber 58. A nozzle 64 is provided. The air / water supply nozzle 64 is connected to the above-described air / water supply device via an air / water supply tube (not shown) inserted through the insertion portion 12. By operating the air / water supply button 32 of the operation unit 14 shown in FIG. 1, compressed air or water is jetted from the air / water supply nozzle 64 toward the observation window 62, and the observation window 62 is washed.

  An illumination unit and a photographing unit (not shown) are accommodated inside the optical system accommodation chamber 58. The illumination unit includes an illumination lens installed inside the illumination window 60 and a light guide arranged so that the tip of the illumination lens faces the illumination lens. The light guide is inserted through the insertion portion 12 of the endoscope 10, and the base end thereof is connected to the light source device described above. Thereby, the irradiation light from a light source device is transmitted through a light guide, and is irradiated outside from the illumination window 60. FIG.

  The imaging unit includes an imaging optical system disposed inside the observation window 62 and a complementary metal oxide semiconductor (CMOS) type or charge coupled device (CCD) type imaging device. The imaging element is connected to the above-described image processing apparatus via a signal cable inserted through the insertion unit 12 and the universal cord 16. An imaging signal of the subject image obtained by the photographing unit is output to the image processing apparatus via the signal cable and subjected to image processing, and then displayed as a subject image on a monitor connected to the image processing apparatus.

<Configuration of Upright Unit 42 of First Embodiment>
FIG. 4 is an assembled perspective view of the stand unit 42 according to the first embodiment. FIG. 5 is a configuration diagram of the stand unit 42 when the stand unit 42 is attached to the distal end main body 40, and is a side view of the stand unit 42 in which the stand 56 is in the standing position. FIG. 6 is a side view of the stand unit 42 in which the stand 56 is in the lying position.

  The stand unit 42 includes a main body 54, a box 46 projecting from the base end side of the main body 54, a stand 56, and a stand drive mechanism 66 that drives the stand 56.

  Further, the tip body 40 includes the power output unit 68 described above and a partition wall 70 provided on the tip body 40, and a partition wall 70 provided between the power output unit 68 and the upright unit 42. .

  Further, the endoscope 10 is provided with a non-contact power transmission device 72 described later. The non-contact power transmission device 72 is a device that transmits the power output from the power output unit 68 to the upright stand driving mechanism 66 through the partition wall 70 in a non-contact manner.

  The power output unit 68 includes a power transmission unit 78 including a first coil 74 and a drive control unit 76 including a regulator and a control circuit for supplying power and control signals to the first coil 74.

  The power transmission unit 78 controls the amount of standing of the stand 56 with a change amount corresponding to the amount of operation for rotating the operation lever 30 from the lying instruction position to the standing instruction position in the entire rotation range of the operation lever 30. Then, the fall amount of the stand 56 is controlled by a change amount corresponding to the operation amount by which the operation lever 30 is turned from the standing instruction position to the lying instruction position. That is, when the operation lever 30 is rotated, a current from the drive control unit 76 flows through the first coil 74. In addition, a change amount of the standing amount of the stand 56 according to the rotation operation amount of the operation lever 30 is sent from the control circuit of the drive control unit 76 to the first coil 74 as a control signal. Such a drive control unit 76 is provided in the operation part 14 (refer FIG. 1) of the endoscope 10, or a connector part not shown.

  As another form of the power transmission unit 78, when the operation lever 30 is rotated from the lying down instruction position to the standing up instruction position, the current from the drive control unit 76 flows in the positive direction through the first coil 74. When the operation lever 30 is turned from the standing instruction position to the inclining instruction position, the current from the drive control unit 76 may flow through the first coil 74 in the reverse direction. In this case, the forward direction of current is the direction of current for moving the stand 56 from the lying position to the standing position, and the reverse direction of current is for moving the stand 56 from the standing position to the lying position. Current direction.

  As another form of the power transmission unit 78, a changeover switch may be provided in the operation unit 14, and the direction of the current may be switched by the changeover switch. Further, the intermediate point of the entire rotation range of the operation lever 30 is set as the operation start position, and the current from the drive control unit 76 is supplied to the first coil 74 by the rotation operation of the operation lever 30 from the operation start position to the standing instruction position. The current from the drive control unit 76 may be passed through the first coil 74 in the reverse direction by the turning operation of the operation lever 30 from the operation start position toward the lodging instruction position.

  On the other hand, the stand drive mechanism 66 of the stand unit 42 is received by the power receiving unit 82 and the power receiving unit 82 that receive the power transmitted from the power transmitting unit 78 through the partition wall 70 by the second coil 80. And a drive unit 84 that is activated by the generated electric power and drives the stand 56. That is, the non-contact power transmission device 72 is configured by the power transmission unit 78 provided in the tip end body 40 and the power reception unit 82 provided in the stand unit 42. Further, the first coil 74 and the second coil 80 constitute an inductive coupler (remote coupler), and power supply and signal transmission are performed.

  The drive unit 84 is a linear motor 86 that is a linear motion unit that is driven in the linear direction by the power received by the power receiving unit 82, and a power transmission member that transmits the linear direction driving force of the linear motor 86 to the stand 56. And a lever 88. The second coil 80 and the linear motor 86 are accommodated in the box body 46, and the second coil 80 is disposed to face the first coil 74 via the wall surface 46 </ b> A on the proximal end side of the box body 46 and the partition wall 70. .

  The lever 88 is accommodated in a concave accommodating portion 55 provided on the side surface of the main body 54, and the accommodating portion 55 is sealed by a lid member 57. Further, a shaft 90 is provided at the proximal end portion of the stand 56, and this shaft 90 is inserted through a through hole 54 </ b> A formed in the main body 54 via an O-ring 91 and connected to a lever 88. Thereby, the accommodating part 55 of the lever 88 is sealed from outside air. Further, the stand 56 and the lever 88 are arranged on the side of the main body 54 with the main body 54 interposed therebetween.

  The tip of a lever 92 is connected to the tip of a shaft 92 that linearly moves the linear motor 86. The linear motor 86 includes a motor body and a drive unit. The linear motor 86 drives the shaft 92 to the distal end side or the proximal end side based on the power and control signal from the drive control unit 76 output via the first coil 74 and the second coil 80. Therefore, when the shaft 92 is driven toward the distal end side or the proximal end side of the insertion portion 12, the power is transmitted to the upright base 56 via the lever 88, and the upright base 56 is moved between the lying position and the upright position. Driven between. A pin 93 shown by a broken line in FIGS. 5 and 6 is provided at the tip of the shaft 92, and this pin 93 slides in a U-shaped groove 89 formed at the tip of the lever 88 as shown in FIG. It is freely engaged. As the pin 93 slides along the groove 89, the linear motion of the shaft 92 is smoothly converted into the arc-shaped motion of the lever 88.

<Operation of the stand unit 42>
In order to position the stand 56 from the lying position to the standing position, the operation lever 30 is rotated from the lying instruction position to the standing instruction position. Thereby, the current from the drive control unit 76 flows to the first coil 74, and the electric power generated in the first coil 74 is received by the second coil 80 in a non-contact manner based on the principle of electromagnetic induction. Then, the linear motor 86 is driven in the backward direction by the electric power generated in the second coil 80 by the drive control unit 76 based on the control signal, and the shaft 92 moves linearly toward the base end side. As a result, the lever 88 rotates about the shaft 90 in the direction of arrow A in FIG. 5, and this turning force is transmitted to the stand 56 via the shaft 90. As a result, the upright 56 moves to the upright position of FIG.

Next, when the stand 56 is positioned from the standing position to the lying position, the operation lever 30 is rotated from the standing instruction position to the lying instruction position. As a result, the current from the drive control unit 76 flows through the first coil 74. The electric power generated in the first coil 74 is received by the second coil 80 in a non-contact manner based on the principle of electromagnetic induction. Then, the linear motor 86 is driven in the forward direction by the electric power generated in the second coil 80 by the drive control unit 76 based on the control signal, and the shaft 92 moves linearly toward the distal end side. As a result, the lever 88 rotates about the shaft 90 in the direction of arrow B in FIG. 6, and this turning force is transmitted to the upright 56 through the shaft 90. As a result, the upright 56 moves to the lying position in FIG. The power supply between the first coil 74 and the second coil 80 is not limited to the electromagnetic induction method, and may be performed by an electric field coupling method or a direct current resonance method. Further, the forward / backward movement of the linear motor 86 may be switched by switching the forward / reverse direction of the current flowing through the first coil 74. <Effect>
According to the endoscope 10 having the stand unit 42 of the first embodiment, the stand drive mechanism 66 on the stand unit 42 side and the power output unit 68 on the tip body 40 side are arranged via the partition wall 70. By doing so, the through hole into which the wire for raising the stand is inserted, which has been conventionally formed in the partition wall 70, can be eliminated. The endoscope 10 includes the non-contact power transmission device 72 that transmits the power output from the power output unit 68 to the upright platform drive mechanism 66 through the partition wall 70 in a non-contact manner. The stand 56 can be driven to the standing position diagram of FIG. 5 or the lying position of FIG. 6 by the power output from the output unit 68.

  On the other hand, when the tip body 40 is cleaned, since there is no through hole through which the wire is inserted into the partition wall 70, cleaning and disinfection with respect to the tip body 40 is improved. Further, when cleaning the stand unit 42, the stand unit 42 can be removed from the tip body 40 and cleaned separately, so that the cleaning and disinfection of the stand unit 42 is improved. Therefore, according to the endoscope 10 of the embodiment, it is possible to reduce time and labor required for the cleaning / disinfecting process for the distal end main body 40 of the insertion portion 12.

  In the first embodiment, the linear motor 86 is exemplified as the linear motion portion. However, the linear motor 86 is not limited to this. For example, a linear motion such as an SMA (Shape Memory Alloy) actuator using a shape memory alloy as a power source. Even an actuator of the type can be applied.

<Configuration of Upright Unit 94 of Second Embodiment>
FIG. 7 is a configuration diagram when the stand unit 94 of the second embodiment is mounted on the tip body 40, and is a side view of the stand unit 94 with the stand 56 in the standing position. FIG. 8 is a side view of the stand unit 94 in which the stand 56 is in the lying position. In the description of the stand unit 94, the same or similar members as those of the stand unit 42 shown in FIGS. 5 and 6 are denoted by the same reference numerals, and the description thereof is omitted.

  The drive unit 84 of the erection drive mechanism 66 of the erection unit 94 includes a micromotor 96 that is a rotation unit that is rotationally driven by the power received by the power receiving unit 82, and the rotational driving force of the micromotor 96 as an erection platform. , And a power transmission member 98 that transmits the power to 56. The micromotor 96 includes a motor body and a drive unit. The micromotor 96 drives the rotation shaft 104 of the micromotor 96 to rotate forward or backward based on the power and control signal from the drive control unit 76 output via the first coil 74 and the second coil 80. .

  The power transmission member 98 includes a worm gear including a worm 100 and a worm wheel 102, and a lever 88. The worm 100 is formed on the outer peripheral surface of the rotating shaft 104 of the micromotor 96, and the worm wheel 102 is formed on the fan-shaped tip surface of the lever 88. The lever 88 and the upright stand 56 are connected via a shaft 90 in the same manner as the upright stand unit 42. The housing portion 55 of the main body 54 that houses the lever 88 is sealed from the outside air by the lid member 57 and the O-ring 91 as in FIG.

<Operation of the stand unit 94>
Although it is substantially the same as operation of the stand unit 42, it demonstrates repeatedly.

  In order to position the stand 56 from the lying position to the standing position, the operation lever 30 is rotated from the lying instruction position to the standing instruction position. As a result, the current from the drive control unit 76 of the power output unit 68 flows to the first coil 74, and the electric power generated in the first coil 74 is received by the second coil 80 in a non-contact manner by the principle of electromagnetic induction. Is done. The micromotor 96 rotates in the forward direction and the worm 100 rotates in the forward direction with the electric power generated in the second coil 80 by the drive control unit 76 based on the control signal. As a result, the lever 88 rotates about the shaft 90 in the direction of arrow A in FIG. 7, and this turning force is transmitted to the upright 56 via the shaft 90. As a result, the upright 56 moves to the upright position of FIG.

  Next, when the stand 56 is positioned from the standing position to the lying position, the operation lever 30 is rotated from the standing instruction position to the lying instruction position. As a result, the current from the drive control unit 76 of the power output unit 68 flows through the first coil 74. The electric power generated in the first coil 74 is received by the second coil 80 in a non-contact manner based on the principle of electromagnetic induction. Then, the micromotor 96 rotates in the reverse direction and the worm 100 rotates in the reverse direction with the electric power generated in the second coil 80 by the drive control unit 76 based on the control signal. As a result, the lever 88 rotates about the shaft 90 in the direction of arrow B in FIG. 8, and this turning force is transmitted to the upright 56 via the shaft 90. As a result, the upright 56 moves to the lying position in FIG. The forward / reverse direction of the rotation direction of the micromotor 96 may be switched by switching the forward / reverse direction of the current flowing through the first coil 74.

<effect>
According to the endoscope 10 provided with the stand unit 94, similarly to the endoscope 10 provided with the stand unit 42, when the distal end body 40 is to be cleaned, the wire 70 is inserted through the partition wall 70. Since there is no hole, cleaning and disinfection with respect to the tip body 40 is improved. In addition, when cleaning the stand unit 94, the stand unit 94 can be removed from the tip body 40 and cleaned separately, so that the cleaning and disinfection of the stand unit 94 is improved. Therefore, the time and labor required for the cleaning / disinfecting process for the distal end main body 40 of the insertion portion 12 can be reduced.

<Configuration of Upright Unit 106 of Third Embodiment>
FIG. 9 is an explanatory diagram showing the main configuration of the stand unit 106 of the third embodiment. In the description of the stand unit 106, the same or similar members as those of the stand unit 94 shown in FIGS. 7 and 8 are denoted by the same reference numerals, and the description thereof is omitted.

  The power output unit 68 provided in the tip body 40 includes a first rotating shaft 108. The stand driving mechanism 66 of the stand unit 106 includes a second rotating shaft 110, and a worm 100 is formed on the outer peripheral surface of the second rotating shaft 110. The first rotating shaft 108 and the second rotating shaft 110 include a magnetic gear device 112. The magnetic gear device 112 connects the first rotating shaft 108 and the second rotating shaft 110 in a magnetic non-contact manner via the partition wall 70, and transmits the rotational force of the first rotating shaft 108 to the second rotating shaft 110. It is a device to do.

  The power transmission unit 78 provided in the tip body 40 includes a micromotor 114 that is a power source for rotating the first rotation shaft 108. The micromotor 114 is rotated in the forward direction when the operation lever 30 shown in FIG. 1 is rotated from the lying instruction position to the standing instruction position, and the operating lever 30 is moved from the standing instruction position to the lying instruction position. When it is rotated, it is rotated in the opposite direction.

  The first rotating shaft 108 is provided with a disk-shaped first magnetic gear 118 having a first magnetic force generating surface 116, and the second rotating shaft 110 has a first magnetic force generating surface 116 of the first magnetic gear 118. A disk-shaped second magnetic gear 122 having a second magnetic force generation surface 120 opposed to is provided. By arranging the first magnetic force generation surface 116 and the second magnetic force generation surface 120 in this way, the torque transmitted from the micromotor 114 to the first rotation shaft 108 can be efficiently transmitted to the second rotation shaft 110. it can. The first magnetic gear 118 and the second magnetic gear 122 as described above constitute a magnetic gear device 112 that is a non-contact power transmission device.

<Operation of the stand unit 106>
In order to position the stand 56 from the lying position to the standing position, the operation lever 30 is rotated from the lying instruction position to the standing instruction position. As a result, the first rotating shaft 108 is rotated in the forward direction by the micromotor 114, so that the second rotating shaft 110 having the worm 100 is rotated in the forward direction by the action of the magnetic gear device 112. As a result, the lever 88 rotates about the shaft 90 in the direction of arrow A in FIG. 7, and this turning force is transmitted to the upright 56 via the shaft 90. As a result, the upright 56 moves to the upright position of FIG.

  Next, when the stand 56 is positioned from the standing position to the lying position, the operation lever 30 is rotated from the standing instruction position to the lying instruction position. Thereby, since the 1st rotating shaft 108 rotates in the reverse direction by the micromotor 114, the 2nd rotating shaft 110 which has the worm 100 rotates in the reverse direction by the effect | action of the magnetic gear apparatus 112. FIG. As a result, the lever 88 rotates about the shaft 90 in the direction of arrow B in FIG. 8, and this turning force is transmitted to the upright 56 via the shaft 90. As a result, the upright 56 moves to the lying position in FIG. The housing portion 55 of the main body 54 that houses the lever 88 is sealed from the outside air by the lid member 57 and the O-ring 91 as in FIG.

  In addition, for driving the first magnetic gear 118 to rotate, the first rotating shaft 108 is formed of a flexible shaft instead of the micro motor 114, the drive control unit 76, and the cable 26, and extends to the operation unit 14. And you may rotate a flexible shaft by rotation operation of the operation lever 30 by changing the direction of a rotating shaft using bevel gears.

<effect>
The endoscope 10 including the upright unit 106 has the same effect as the endoscope 10 including the upright units 42 and 94 in cleaning and disinfecting the distal end body 40. Further, according to the endoscope 10 having the magnetic gear device 112, the rotational force transmitted from the micromotor 114 to the first rotation shaft 108 is transmitted to the second rotation shaft 110 in a non-contact manner, and the second rotation shaft 110 is transmitted. It can be rotated smoothly. Therefore, the stand 56 can be driven smoothly.

<Configuration of Upright Unit 124 of Fourth Embodiment>
FIG. 10 is a perspective view in which the stand unit 124 of the fourth embodiment is mounted on the tip body 40, and the stand 56 is in a lying position. FIG. 11 is a perspective view in which the upright 56 is in the upright position, and is a perspective view showing the internal structure through the unit main body 126 of the upright unit 124. FIG. 12 is an assembled perspective view of the stand unit 124.

  The stand unit 124 is a unit main body 126 that is attached to and detached from the tip end main body 40, and includes a box-type unit main body 126 having a wall portion 130 for forming an accommodation space 128 therein. Examples of the structure in which the unit main body 126 is attached to and detached from the tip main body 40 include various structures such as a fitting structure in which a convex portion and a concave portion are combined, and an engaging structure in which an engaging portion and a non-engaging portion are combined. it can.

  In the accommodation space 128 of the unit main body 126, the upright stand driving mechanism portion 132 is accommodated, and the upright stand 56 is disposed outside the wall portion 130 of the unit main body 126. The upright stand driving mechanism 132 and the upright stand 56 are connected to each other via a shaft 136 penetrating through a through hole 134 formed in the wall portion 130 of the unit main body 126. Further, the shaft 136 is fitted into the through hole 134 via an O-ring 137, whereby the housing space 128 of the stand unit 124 is sealed from the outside air.

  In the stand unit 124, the magnetic gear device 112 shown in FIG. 9 is applied as a non-contact power transmission device. Further, a feed screw device is applied as the upright stand drive mechanism 132. That is, the second rotating shaft of the magnetic gear device 112 is the feed screw 138, and the nut 140 screwed to the feed screw 138 is slidably engaged with the long hole 88A formed at the tip of the lever 88. Yes.

<Action>
According to the stand unit 124 of the fourth embodiment, when the feed screw 138 is rotated in the forward direction by the second magnetic gear 122 of the magnetic gear device 112, the power rises via the nut 140, the lever 88, and the shaft 136. The signal is transmitted to the table 56, and the upright table 56 moves to the upright position. Further, when the feed screw 138 is rotated in the reverse direction by the second magnetic gear 122 of the magnetic gear device 112, the power is transmitted to the upright 56 through the nut 140, the lever 88 and the shaft 136, and the upright 56 is tilted down. Move to position.

  According to the stand unit 124, the stand drive mechanism 132 is housed in the housing space 128 of the box-shaped unit main body 126, so that the stand drive mechanism 132 can be protected from the outside. Further, since the storage space 128 of the stand unit 124 is sealed from the outside air, cleaning and disinfection of the stand drive mechanism 132 stored in the storage space 128 becomes unnecessary.

  The cleaning / disinfecting of the stand unit 124 is the same as that of the stand units 42, 94, 106. Further, the stand driving mechanism 132 is not limited to the feed screw device, and other mechanisms such as a structure combining two bevel gears and a structure combining rack gear and pinion gear may be applied. .

  The preferred embodiments of the present invention have been described with reference to a plurality of embodiments. However, the present invention is not limited to the illustrated embodiments without departing from the gist of the present invention. In the above embodiment, the side-view endoscope 10 has been described as an example. However, if the endoscope is provided with an upright stand that adjusts the leading direction of the treatment instrument at the distal end portion of the insertion portion, direct viewing is performed. The present invention can be applied to various endoscopes such as mirrors.

DESCRIPTION OF SYMBOLS 10 Endoscope 12 Insertion part 14 Operation part 16 Universal cord 18 Tip part 20 Bending part 22 Flexible part 24 Treatment tool insertion channel 26 Cable 28 Angle knob 30 Operation lever 32 Air supply / water supply button 34 Suction button 36 Treatment tool introduction port 38 Treatment Tool outlet 40 Front end main body 42 Standing base unit 44 Cap 44A Opening window 46 Box 46A Wall surface 48 Opening part 50 Standing base accommodating chamber 52 Bulkhead 54 Main body 54A Through hole 55 Standing part 56 Standing base 57 Cover member 58 Optical system accommodating chamber 60 Illumination window 62 Observation window 64 Air supply / water supply nozzle 66 Standing table drive mechanism 68 Power output unit 70 Partition 72 Non-contact power transmission device 74 First coil 76 Drive control unit 78 Power transmission unit 80 Second coil 82 Power reception unit 84 Drive unit 86 Linear motor 88 Lever 88A Long hole 89 Groove 90 Shaft 91 O phosphorus 92 Shaft 93 Pin 94 Standing table unit 96 Micro motor 98 Power transmission member 100 Worm 102 Worm wheel 104 Rotating shaft 106 Standing table unit 108 First rotating shaft 110 Second rotating shaft 112 Magnetic gear device 114 Micro motor 116 First magnetic force generation Surface 118 First magnetic gear 120 Second magnetic force generation surface 122 Second magnetic gear 124 Stand unit 126 Unit body 128 Housing space 130 Wall unit 132 Stand unit drive mechanism unit 134 Through hole 136 Shaft 137 O-ring 138 Feed screw 140 Nut

Claims (9)

An insertion portion having a distal end and a proximal end;
A distal end portion body provided on the distal end side of the insertion portion;
An erection unit that is detachably attached to the distal end body, and includes an erection unit that has a treatment instrument erection base and an erection base drive mechanism that drives the treatment instrument erection base;
A power output unit provided in the tip body;
A partition wall provided in the tip body, and a partition wall provided between the power output unit and the upright unit;
A non-contact power transmission device that transmits the power output from the power output unit to the upright drive mechanism unit in a non-contact manner via the partition;
An endoscope comprising: The power output unit includes a power transmission unit,
The stand driving mechanism is configured to receive power transmitted from the power transmitting unit via the bulkhead, and to be activated by the power received by the power receiving unit to drive the treatment instrument stand. A drive unit for
The endoscope according to claim 1. The power transmission unit includes a first coil and a power supply unit that supplies power to the first coil.
The power receiving unit includes a second coil;
The endoscope according to claim 2. The drive unit is
A linear motion portion that is driven in a linear direction by the power received by the power receiving portion; and a power transmission member that transmits a driving force in the linear direction of the linear motion portion to the treatment instrument stand.
The endoscope according to claim 2 or 3. The drive unit is
A rotating unit that is rotationally driven by the power received by the power receiving unit, and a power transmission member that transmits the rotational driving force of the rotating unit to the treatment instrument stand.
The endoscope according to claim 2 or 3. The power output unit includes a first rotating shaft,
The upright stand driving mechanism includes a second rotating shaft,
The first rotating shaft and the second rotating shaft connect the first rotating shaft and the second rotating shaft in a magnetically non-contact manner through the partition wall, and the rotational force of the first rotating shaft is obtained. A magnetic gear device for transmitting to the second rotating shaft;
The endoscope according to claim 1. The magnetic gear device includes:
A first magnetic gear provided on the first rotating shaft and having a first magnetic force generation surface;
A second magnetic gear provided on the second rotating shaft and having a second magnetic force generation surface opposed to the first magnetic force generation surface of the first magnetic gear;
Comprising
The endoscope according to claim 6. The stand unit has a unit main body having a wall portion for forming a housing space therein,
The upright stand drive mechanism is housed in the housing space of the unit body,
The treatment instrument stand is disposed outside the unit body,
The stand drive mechanism and the treatment instrument stand are coupled via a shaft penetrating through the wall of the unit body.
The endoscope according to any one of claims 1 to 7. The accommodation space of the stand unit is sealed from outside air;
The endoscope according to claim 8.

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