JPH10262900A - Endoscopic system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase opeartion efficiency especially of a processing equipment by providing an operation part of an endoscope with an operation means freely attachably and detachably to manipulate a driving part of the processing equipment and allowing an operating person to perform the operation of the endoscope and the processing equipment, with reference to a endoscopic system including a processing equipment to be used under the observation of the endoscope. SOLUTION: An endoscope 1 consists of an insertion part 2 having a leading curved end part and an operation part 3, and an operation knob 8 is provided in the operation part 3 to manipulate the leading end curved part. Processing equipment 10 installed inside a channel 9 of the leading end of the insertion part 2 for the insertion of the processing equipment 10 consists of an insertion part 14 formed from a flexible tube and a gripper 15 to grip living body tissue and the like. The processing equipment 10 is opened/closed by advancing/retreating the end part 16 of the gripper 15. The open/close operation is performed by turning on electricity to a piezoelectric actuator 17 and the leading end of the processing equipment 10 is curved by winding up an operation wire 19 by a motor. The driving of the piezoelectric actuator 17 and the motor is controlled by a drive controller 11 connected to an open/close switch 22 and a curve-switch 23 of an operation panel 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
An endoscope system for treating.

[0002]

2. Description of the Related Art Conventionally, when performing an endoscopic procedure, an operator who holds and operates an endoscope and an assistant who holds and operates a treatment tool are jointly operated. In recent years, this endoscopic procedure has also performed a sophisticated and complicated procedure, and in the conventional method, considerable skill is required in order for the assistant to be able to perform the procedure as the operator intends.

[0003] In order to improve operability, an endoscope,
Alternatively, various electrification of operation has been proposed for each treatment tool, but no system has been proposed in consideration of the operator's operation convenience.

[0004]

SUMMARY OF THE INVENTION According to the present invention, an operator can operate an endoscope and a treatment tool so that a complicated endoscopic treatment can be easily performed, and particularly, the operability of the treatment tool is improved. It is an object of the present invention to provide an endoscope system.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an endoscope system comprising a treatment tool having a drive unit used under observation of an endoscope. An operating means for operating the drive unit is detachably provided on the operating unit of the endoscope.

[0006] The operator selects an operation panel on which the treatment tool can be easily operated and attaches it to the operation section. By operating the bending switch of the operation panel and the operation knob of the endoscope, the distal end of the treatment tool can be guided to the affected part, and the opening / closing switch can be operated to grasp the affected part tissue by the grasping part and perform collection or the like. .

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show a first embodiment, and FIG.
Shows the overall configuration of the endoscope system. The endoscope 1 includes an insertion section 2 having a distal end curved section and an operation section 3. The operation unit 3 is connected to a light source device 4 and a camera control unit (hereinafter, referred to as CCU) 5 provided outside by a cable 6. The CCU 5 is connected to the TV monitor 7. The operation section 3 is provided with an operation knob 8 for operating the distal end bending section. In addition, the endoscope 1 is provided with a channel 9 for inserting a treatment tool. Usually, various types of treatment tools can be inserted into the channel 9 to perform treatment on an affected part. .

In the present embodiment, a treatment instrument 10 which is opened and closed and bent by electric power, which will be described in detail later, is used. The proximal end of the treatment tool 10 is connected to an external treatment tool drive control device (hereinafter, referred to as a drive control device) 11. The drive control device 11 is connected to the operation unit 3 by a connection cord 12.
The connection cord 12 is detachable from the operation unit 3 and can be used in a detached state when using a conventional treatment tool other than the electric treatment tool. And it is electrically connected to the operation panel 13 which is detachably attached to the operation unit 3.

FIG. 2 shows the structure of the treatment tool 10. Treatment tool 1
Reference numeral 0 denotes an insertion portion 14 formed of a flexible tube, and a grip portion 15 for gripping a living tissue or the like at the tip. The grip 15 has a pantograph structure, and opens and closes by moving the end 16 forward and backward. The end portion 16 is connected to a piezoelectric actuator 17 that can be stacked and has a sufficient displacement by being laminated, and the piezoelectric actuator 17 is connected to the drive control device 1 through a signal line 18.
1 is connected. One end of each of two operation wires 19 is fixed to the inner surface of the distal end of the insertion portion 14, and the operation wires 1
The other end of the motor 9 is a motor 20 in the drive control device 11.
It is connected to the. When the motor 20 rotates, the operation wire 19 can be wound up and the distal end of the treatment tool 10 can be curved.

The drive control device 11 receives an operation signal from the operation panel 13 and receives the above-described piezoelectric actuator 17,
A control circuit 21 for controlling the driving of the motor 20 is built in. On the surface of the operation panel 13, an open / close switch 2 as an operation unit for operating the open / close of the grip 15 of the treatment tool 10 is provided.
2 and two bending switches 23 for operating the bending.

FIG. 3 shows a configuration in which the operation panel 13 is attached to the operation unit 3. A recess 24 having a hook is provided on the operation unit 3 side, and a plurality of electrical contacts A25 are provided on the surface of the recess 24. An electric contact B26 is also provided on the bottom surface of the operation panel 13, and the operation panel 13
The electrical contacts A25 and B26 are electrically connected in the state in which is fitted. A signal line 27 extends from the electric contact A25 to a contact 28 with the connection cord 12 through the operation section 3.

The operation panel 13 is provided with a plurality of types having different operation switch forms. A switch having the above-mentioned open / close switch 22 and bending switch 23 on the surface is a first one.
4, a second operation panel 32 provided with an opening / closing volume 30 and a curved volume 31 by setting a switch to a rotary volume as shown in FIG. 4, and a track ball 33 for bending operation as shown in FIG. And open / close switch 2
And a third operation panel 34 provided with a second operation panel 2. In each case, the electrical contact B26 is the same. These operation panels 13
The user can freely select a type that is easy for the user to use and attach it to the operation unit 3 for use.

Next, the operation of the endoscope system configured as described above will be described.

An operator inserts the endoscope 1 into a living body and guides it to the affected part. Then, a treatment tool is selected according to the treatment of the affected part, and inserted through the channel 9. In the treatment, there are various forms such as grasping, puncturing, incision, laser irradiation, capture, marking, and the like. In the present embodiment, the treatment tool 10 having a bending function will be described as an example. An operation panel 1 for the operator to easily operate the treatment tool 10
3 is selected and attached to the operation unit 3. Then, the user operates the bending switch 23 and the operation knob 8 of the endoscope 1 to guide the distal end of the treatment tool 10 to the affected part. Next, by operating the open / close switch 22, the affected part tissue is grasped and collected by the grasping part 15.

According to the present embodiment, the operator can freely select the operation panel according to the type of the treatment tool to be used, so that the operability is improved and a reliable treatment can be performed. In addition, since the operator can operate the treatment tool from the operation section of the endoscope, the operator can perform a desired treatment as compared with the conventional operation by the assistant. further,
The operation panel simply outputs an operation signal, and has an effect that it can be commonly used regardless of the type of actuator used for the electric treatment tool.

In the first embodiment, the method of attaching the operation panel 13 to the operation section 3 has been described.
However, the present invention is not limited to this. As shown in FIG.
It may be plugged in. In short, any method can be used as long as it is detachable and can be electrically connected at the time of attachment.

In the first embodiment, the operation panel 13
Was transmitted to the drive control device 11 through the connection cord 12, but as shown in FIG.
Alternatively, a wireless transmission circuit 37 may be provided in the device 3, and a wireless reception circuit 38 may be provided in the drive control device 11 so that the wireless operation is performed. By doing so, the connection cord 12 becomes unnecessary, so that the handling of the endoscope becomes easy and the operability is improved.

FIG. 9 shows a second embodiment, specifically showing combinations of various treatment tools and a suitable operation panel 50.

FIG. 9A shows that when the open / close type grasping forceps 41 is driven by the opening / closing actuator 42, a suitable operation panel 50 is opened / closed by the push button 43 (a) and the opening / closing amount is adjusted to an arbitrary amount by the volume 44. The controllable form (b) is easy to operate.

FIG. 9B shows a mode (C) in which a suitable operation panel 50 is operated by a plurality of push buttons 47 corresponding to the bending direction when the bending treatment tool 45 is driven by the bending actuator 46. A mode in which the tilting direction of the joystick 48 corresponds to the bending direction by the joystick 48, and the tilting angle corresponds to the bending angle (d). A mode using the trackball 49 described in the first embodiment (e). The above is easy to operate.

FIG. 9C shows a case where the heater of the heat probe is driven. The operation panel 50 is provided with an output adjustment knob 51 for the heater and an output display panel 52.

According to the present embodiment, the operator can freely select the operation panel according to the type of the treatment tool to be used, so that the operability is improved and a reliable treatment can be performed.

FIG. 10 shows a third embodiment. In the first embodiment, an operation panel 29 is provided with a forceps opening / closing piezoelectric actuator 17 and an opening / closing switch 22 and a bending switch 23 which are operating means of the bending motor 20. But
The means for operating a plurality of drive elements is not necessarily one.
There is no need to combine them on a single operation panel. As shown in FIG. 10, two places of the operation unit 3 of the endoscope 1 are provided with places for fitting the operation panel 50, and the operation panels 50 suitable for the driving elements are respectively mounted as described in the second embodiment. May be. FIG. 10 shows an example in which an operation panel 50 having a joystick 48 is mounted for operating a bending motor, and an operation panel 50 having a volume 44 is mounted for operating a forceps opening / closing piezoelectric actuator.

According to the above embodiments, the following configuration is obtained.

(Supplementary Note 1) In an endoscope system including a treatment tool provided with a drive unit used under observation of the endoscope,
An endoscope system, wherein an operation means for operating a drive unit of the treatment tool is detachably provided on an operation unit of the endoscope.

(Supplementary Note 2) The endoscope system according to Supplementary Note 1, wherein the operation means has a plurality of types of operation members and is selectively mounted on an operation unit of the endoscope.

(Supplementary Note 3) The endoscope system according to Supplementary Note 1, wherein the treatment tool includes a plurality of driving units, and the operating unit includes an operation unit that operates the plurality of driving units.

(Supplementary note 4) The endoscope system according to Supplementary note 3, wherein the operation units corresponding to the plurality of driving units are detachably attached to the operation unit of the endoscope independently. .

(Supplementary note 5) An external drive control device for driving the drive unit of the treatment tool, wherein the operating means transmits an operation signal to the drive control device.
The endoscope system according to any of the preceding claims.

(Supplementary Note 6) In an endoscope system provided with an endoscope having a movable part by an actuator means and a control part for controlling the operation of the actuator means, the control means is provided in an operation part of the endoscope. An operation signal generation means for the actuator which is detachably provided is connected in a signal manner to transmit and receive an operation signal, and the endoscope operation unit is replaced with a second operation signal generation means having a different operation form. Endoscope system comprising a connection means capable of being used.

(Supplementary note 7) The endoscope system according to supplementary note 6, wherein the movable part is a treatment tool inserted into the endoscope for use, and is remotely driven by actuator means.

(Supplementary note 8) The endoscope system according to supplementary note 6, wherein the operation signal generation means is a button-type signal generation device.

(Supplementary note 9) The endoscope system according to supplementary note 6, wherein the operation signal generating means is a knob-type signal generating device.

(Supplementary note 10) The endoscope system according to supplementary note 6, wherein the operation signal generating means is a joystick type signal generating device.

(Supplementary note 11) The endoscope system according to supplementary note 6, wherein the operation signal generating means is a trackball type signal generating device.

(Supplementary note 12) The endoscope system according to supplementary note 6, wherein the signal connection is an electrical connection provided in the operation signal generating means and the endoscope operation unit.

(Supplementary note 13) The endoscope system according to supplementary note 6, wherein the signal connection is a wireless connection provided in the operation signal generating means and the endoscope operation unit.

(Supplementary note 14) The endoscope system according to supplementary note 6, wherein the connection means is a connection by fitting the operation signal generation means and the operation unit.

(Supplementary note 15) The endoscope system according to supplementary note 6, wherein the connection means is a connection between the operation signal generation means and the operation unit by magnetic force means.

(Supplementary note 16) The endoscope system according to supplementary note 6, wherein the operation signal generating means generates a signal corresponding to an operation of a plurality of actuators.

FIGS. 11 to 18 show a fourth embodiment.
FIG. 11 shows the entire configuration of the endoscope system, and the same components as those in the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 16, the insertion section 2 of the endoscope 1
The distal end portion 53 of the base is provided with a channel 56 through which a biopsy forceps 54 as a treatment tool can be inserted, which communicates with a channel insertion hole 55 on the hand side, and a forceps raising base 57. The forceps raising table 57 is connected to a wire 58, and is pulled in the direction of the arrow, so that the forceps raising table 57 rises, and the treatment tool 54 stands.

A light receiving element 59 is provided on the peripheral wall of the terminal end portion 56a of the channel 56 (that is, the portion immediately before the treatment tool 54 protrudes).
At 0, it is transmitted to the operation unit 3 on the hand side.

Next, a treatment tool used in combination with the endoscope 1 will be described. As shown in FIGS. 12 to 15, the biopsy forceps 54 is provided with an insertion portion 61 formed by a flexible tube. A grip portion 62 for gripping a living tissue or the like is provided at a distal end portion of the insertion portion 61. On the other hand, the proximal end of the biopsy forceps 54 is connected to the drive control device 11 shown in FIG. Further, a wire 63 for opening and closing the grip portion 62 is provided in the flexible tube of the insertion portion 61 and guided by the drive control device 11.

A rack-and-pinion mechanism 64 is connected to the base end of the wire 63. The rotation mechanism of the motor 65 pushes and pulls the wire 63 in the drive control device 11 to open and close the grip 62. . Also, the insertion section 6
A pair of wire-shaped bending drive members 66 and 67 made of, for example, SMA and storing a bent shape are disposed at positions at the tip end side in the flexible tube at positions symmetrical with respect to the axis. Further, lead wires 68, 68 are connected to the bending drive members 66, 67, respectively, so that they can be energized and heated independently.

The bending of the distal end of the insertion portion 61 can be performed by changing the shape of each of the bending drive members 66 and 67 during heating. The lead wires 68, 68
Are connected to an external drive control device 11 shown in FIG.

Further, a light emitting means 69 is provided behind the curved portion of the biopsy forceps 54. The light emitting means 69 is formed by rolling an optical fiber guided from the hand side in the circumferential direction on the outer periphery of the insertion portion 61. The part rounded in the circumferential direction is the core material 7
Consists of only zeros.

The endoscope system configured as described above includes:
An endoscope operator inserts the endoscope 1 into a digestive tract or the like of a patient. When a procedure such as a biopsy becomes necessary, the biopsy forceps 54 connected to the drive control device 11 is inserted into the channel 56 through the channel insertion hole 55. A light emitting unit 69 is provided behind the curved portion of the biopsy forceps 54, and emits light. When the biopsy forceps 54 passes the end of the channel 56, the light emitting element 59 senses this light. This signal is sent to the operation unit 3 on the hand side by the lead wire 60,
It is sent to the detection circuit 11a in the drive control device 11 and the treatment tool drive control unit 11b via the connection cable 6. And
By this signal transmission, the endoscope 1, the opening / closing switch 22 provided on the operation knob 8, and the bending operation switch 23 become operable (see FIG. 18).

Therefore, when the biopsy forceps 54 reaches the target treatment section, the operator operates the opening / closing switch 22 to open and close the biopsy forceps 54 and the gripper 62 and to operate the bending operation switch 2.
By 3, the operation of bending the biopsy forceps 54 and the insertion portion 61 is performed to perform the intended treatment of the affected part.

According to this embodiment, a complicated endoscopic treatment can be easily performed, and the treatment tool does not operate until it protrudes from the channel, so that the treatment tool may damage the endoscope such as the channel by mistake. There is no.

The light emitting means using an optical fiber has been described. However, the light emitting means is not limited to this. For example, as shown in FIGS. 19 and 20, the LED 71 is placed behind the curved portion of the biopsy forceps 54. May be provided.

FIGS. 21 and 22 show a fifth embodiment, in which the same components as those in the first embodiment are designated by the same reference numerals and their description is omitted. In the fourth embodiment, instead of detecting the light from the light emitting portion on the outer surface of the treatment tool with the light receiving element provided at the end of the channel, in the present embodiment, the shading of the outer surface of the treatment tool is changed. . That is, the outer surface of the biopsy forceps 72 changes color (shade) at the curved portion 73 and the rear portion 74 thereof. For example, the curved portion 73 has a light color, and the rear portion 74 of the curved portion 73 has a dark color.

On the other hand, at the end of the channel 56 of the distal end portion 53 of the endoscope 1, there is provided a charge storage element 75 made of CCD, CdS or the like for reading the density of the outer surface of the biopsy forceps 72. The detection signal is sent to the hand side.

As in the fourth embodiment, the operator inserts the biopsy forceps 72 connected to the drive control device 11 into the channel 56 of the endoscope 1 when a treatment is required. When the rear portion 74 of the curved portion 73 of the biopsy forceps 72 passes over the charge accumulating element 75 and the density changes (light → dark), the charge accumulating element 75 reads this and reads the detection signal via the lead wire 60. Send to the side. This signal is sent to the detection circuit 1 in the drive control device 11 via the connection cable 12.
1a, sent to the treatment tool drive control unit 11b. By this signal transmission, the opening / closing switch 22 and the bending operation switch 23 provided on the operation unit 3 of the endoscope 1 become operable,
The operator can treat the target affected part.

Therefore, in addition to the effects of the fourth embodiment, the configuration of the treatment tool is simplified.

FIGS. 23 and 24 show a sixth embodiment, in which the same components as those in the first to fifth embodiments are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 23, the biopsy forceps 5
4 is provided with a grasping portion 62 of the biopsy forceps 54.
An opening / closing bar code 76 is provided at a position corresponding to the amount of pushing completely protruding from the channel 56.
Similarly, a bending bar code 77 is provided at a position corresponding to the amount of pushing of the bending driving members 66 and 67 of the biopsy forceps 54 completely protruding from the channel 56.

On the other hand, a bar code reader 79 for reading the opening / closing bar code 76 and the bending bar code 77 is provided at the entrance of the forceps hole 78 of the endoscope 1.
The read signal is sent to the drive control device 11 via the connection cable 12 so that the drive control of the open / close switch 22 and the bending operation switch 23 provided on the operation unit 3 can be performed.

The endoscope system configured as described above includes:
When the operator needs treatment, the biopsy forceps 54 is inserted into the forceps hole 78. Then, when the opening / closing barcode 76 on the hand side of the biopsy forceps 54 passes through the barcode reader 79, the barcode reader 79 reads the barcode, and sends a signal to the drive control device 11 via the connection cable 12 as in the fourth and fifth embodiments. Sent. At this time, the grasping portion 62 of the biopsy forceps 64 is
6 protrudes. Then, the open / close switch 22 provided on the operation unit 3 becomes operable, and the operator can open and close the grip unit 62.

On the other hand, when the proximal side of the biopsy forceps 54 is further pushed in, the opening / closing bar code 76 is
And the bar code reader 79 reads it. Then, as in the fourth and fifth embodiments, a signal is sent to the drive control device 11 via the connection cable 12. At this time, the bending driving members 66 and 67 of the biopsy forceps 54
More protruding. Then, the bending operation switch 23 provided on the operation unit 3 becomes operable, and the operator can perform the bending operation of the grasping forceps 54. Then, the surgeon can treat the target affected part.

In the fourth to sixth embodiments, the grasping forceps has been described as a treatment tool. However, the present invention is not limited to this, and various treatment tools can be applied. In addition, although a description has been given of an apparatus using an SMA, a motor, or the like as a drive mechanism (opening / closing, bending) of the treatment tool, various drive mechanisms such as a piezoelectric actuator and a chemomechanical actuator can be used without being limited thereto.

According to the above-described embodiment, the following configuration can be obtained.

(Supplementary Note 17) In an endoscope system including an endoscope having a forceps insertion hole, a treatment tool driven by actuator means, and a control unit for controlling the operation of the actuator means, the forceps insertion hole Detecting means for detecting that the treatment tool has been completely inserted in a part of the
An endoscope system comprising a safety mechanism for prohibiting the control unit from driving the actuator means in response to a signal from the detection means.

(Supplementary note 18) The endoscope system according to supplementary note 1, wherein the detecting means is a light receiving element for detecting light from a light emitting means provided on the treatment instrument side.

(Supplementary note 19) The endoscope system according to supplementary note 1, wherein the detecting means is a charge storage element for detecting the density of the outer surface of the treatment tool.

(Supplementary note 20) The endoscope system according to supplementary note 1, wherein the detection means is a barcode reader that reads a barcode provided on the treatment instrument side.

According to Supplementary Notes 17 to 20, it is possible to easily perform complicated endoscopic treatment, and it is possible to prevent the treatment tool from damaging the endoscope.

The following is a disclosure relating to the improvement of the forceps raising mechanism provided in the endoscope 1 described above. The above-described forceps raising mechanism pulls the forceps raising table 57 with the wire 58 to raise the forceps. For this reason, since the wire 58 and a conduit for guiding the wire 58 to the hand side are required, dirt, germs and the like easily accumulate in the conduit, and the cleaning property is not good. Therefore, as shown in FIG. 25, a non-extensible balloon-type forceps raising base 80 having a telescopic bellows portion is provided at the distal end portion 53 of the endoscope 1 and connected to the tube 81 on the hand side. A mechanism that feeds a fluid (air or saline) from above, inflates the forceps raising table 80, and raises the treatment tool inserted through the channel 56 is considered. However, in this case, since the forceps raising table 80 is a balloon, its thickness is thin, and the distal end of the treatment tool protruding from the channel 56 may cause the balloon to be pierced.

FIGS. 26 and 27 show a first disclosed example of a forceps raising stand which solves the above-mentioned problem. The treatment tool sliding surface (upper surface) of the forceps raising table 80 made of a non-extensible balloon made of a material such as polyethylene, vinyl acetate, and vinyl chloride has a metal mesh 82 made of stainless steel or the like as a member for preventing the treatment tool from piercing. Further, a coating layer 83 made of a rubber material such as latex, silicon, urethane or the like is fixedly provided thereon.

The treatment tool inserted through the channel 56 of the endoscope 1 comes into contact with the metal mesh 82 as a perforation preventing member on the upper surface of the forceps raising base 80 and the coating layer 83, and the endoscope 1
Will protrude. For this reason, the treatment tool does not directly contact the thin non-compliant balloon.

The forceps raising table 80 thus configured has a metal mesh 82 and a covering layer 83 made of a rubber material on the treatment tool sliding surface (upper surface). However, there is no danger that the forceps erecting base 80 made of a thin-walled balloon is perforated.

FIGS. 28 and 29 show a second disclosure example. Instead of the metal mesh 82 and the coating layer 83 of the first disclosed example, a thin metal layer 84 made of stainless steel or the like is provided on the treatment tool sliding surface (upper surface) of the forceps raising base 80 made of a balloon.
Is provided integrally with the balloon.

In addition to the effects of the first disclosed example, since the metal layer 84 is made of a thin film, the treatment tool slides more smoothly on the forceps raising base 80.

FIGS. 30 and 31 show a third disclosure example. In the present disclosure, a base 85 made of metal such as stainless steel is integrally provided on the upper surface (treatment tool sliding surface) of the non-extensible balloon-type forceps raising base 80. Also,
At the center of the base 85, the treatment tool moves smoothly,
A sliding groove 86 is provided.

The treatment tool protruding from the channel 56 is guided out of the endoscope 1 through a slide groove 86 provided in a base 85 on the upper surface of the balloon-type forceps raising base 80. Therefore, as compared with the first and second disclosed examples, since the metal base 85 is used as the perforation prevention member, the balloon perforation prevention effect is improved.

FIG. 32 shows a fourth disclosure example.
The thin-film metal layer 84 is provided on the upper surface (treatment tool sliding surface) of the non-extensible balloon type forceps raising table 80 as in the second disclosed example, and the channel tube 8 of the endoscope 1 is provided.
7 is fixed to the metal layer 84 by protruding.

With this configuration, the treatment tool 88 inserted from the hand side is led out from the distal end of the channel tube 87, but the channel tube 87 is fixed to the upper surface of the forceps raising base 80 and provided. The distal end of the treatment tool 88 and the sliding surface of the forceps raising table 80 are led out of the endoscope 1 without contact. Therefore, the distal end portion of the treatment tool 88 is not in contact with the balloon-type forceps raising table 80, and the perforation by the treatment tool 88 is prevented.

By the way, the forceps raising base 80 made of the non-extensible balloon has the bellows which can be extended and contracted on the front and side surfaces of the balloon.
There was a possibility that dirt and germs accumulated on the bellows portion, resulting in poor cleaning performance.

FIGS. 33 and 34 solve the above-mentioned problem and show a fifth disclosure example. As described above, an elastic bag-shaped member 90 made of latex, urethane, silicon, or the like is provided so as to cover the entire outer peripheral surface of the balloon-type forceps raising base 80 made of a non-extensible material such as polyethylene, vinyl acetate, and vinyl chloride. The end 91 is liquid-tightly adhered and fixed.

With this configuration, the endoscope 1
After the treatment instrument 88 is inserted through the channel 56 of the above, and reaches the forceps raising table 80, a fluid is sent from the hand side to inflate the balloon. Then, the bellows of the forceps raising stand 80 formed of a non-stretchable balloon is extended, and is raised and driven as shown in FIGS. 34 (a) and 34 (b).

At this time, the elastic bag-like member 90 provided so as to cover the outer periphery of the forceps raising base 80 expands with the inflatable balloon. When the fluid is discharged from the balloon, the balloon is in a contracted state as shown in FIGS. 34A and 34B. At this time, the elastic bag-shaped member 90 also contracts. Therefore, since the entire circumference of the forceps raising table 80 made of a non-extensible balloon having a bellows is covered with the elastic bag-shaped member 90, dirt and the like are less likely to adhere and cleaning performance is improved.

FIG. 35 shows a sixth disclosure example. The fifth disclosure example covers the entire outer periphery of the balloon with the elastic bag-shaped material. On the other hand, in the present disclosure example, only the side and front surfaces of the forceps raising base 80 of the non-extensible balloon where the bellows are located are provided. The elastic bag-shaped member 90 is provided so as to cover it. The upper end 92 and the lower end 93 are adhesively fixed in a liquid-tight manner. Therefore, an effect similar to that of the fifth disclosure example can be obtained.

FIGS. 36 and 37 show a seventh disclosure example.
The forceps raising stand 94 includes a metal base 95 and a metallic bellows 96 made of a thin metal.
A tube 97 for sucking and discharging fluid is connected to the metallic bellows 96. When the fluid is discharged, the tube is in a contracted shape as shown in FIG. 36.
As shown in FIG. Further, the entirety of the base 95 and the metallic bellows 96 on the outer peripheral surface is covered with an elastic bag-shaped member 90 similarly to the fifth and sixth disclosed examples, and is liquid-tightly adhered and fixed at the end 91. I have.

After the treatment instrument 98 is inserted through the endoscope channel, the forceps raising table 94 is
, The fluid is supplied through the tube 97.
Then, as shown in FIG. 37, the metallic bellows 96
Expands, and accordingly, the elastic bag-like member 90 also expands. Therefore, an effect similar to that of the fifth disclosure example can be obtained.

By the way, non-extensible materials (polyethylene,
The balloon-type forceps erecting base by vinyl acetate, vinyl chloride method) is manufactured integrally by blow molding. In this case, however, processing is difficult because the mold for blow molding is small, and cost is low. Is expensive. Also, for blow molding,
There is a problem that it is difficult to make the wall thickness uniform and uneven thickness occurs.

FIGS. 38 to 40 show an eighth disclosure example, which solves the above-mentioned problem. As shown in FIG. 38, a non-extensible sheet 100 made of polyethylene, vinyl acetate, vinyl chloride, or the like is provided with a hole 101 so that a fluid supplied from the outside can flow.

The non-extensible sheet 100 thus configured
Has an adhesive or welded portion 100a formed on the peripheral edge thereof, except for an intermediate portion in the longitudinal direction. Then, as shown in FIG. 39, a plurality of folded non-extensible sheets 100 are stacked as shown in FIG. 39, and the welded portion 100a is appropriately fixed by bonding or welding to form the small balloon 102 having a Harisen shape. Form. Then, a pressurizing tube 103 for sucking and discharging physiological saline, air, etc., and inflating and deflating the small balloon 102 is connected to one of the plurality of folded non-extensible sheets 100, and airtightly fixed.

The small balloon 103 thus configured
Is incorporated in the endoscope 1 as shown in FIG. Then, when the fluid is sucked and discharged from the hand side via the pressurizing tube 103, the fluid expands and contracts, and functions as a forceps raising base. Therefore, it can be manufactured cheaply and easily as compared with the manufacture by blow molding, and the thickness of the bellows portion of the forceps raising stand is uniform without uneven thickness.

FIGS. 41 to 43 show a ninth disclosure example. In contrast to the eighth disclosure example in which a plurality of non-extensible sheets 100 are folded and stacked, the present disclosure example utilizes a single long sheet as shown in FIG.

That is, as shown in FIG. 41, a long non-extensible sheet 104 is folded as shown in FIG. 42 to form a bellows portion 105. Then, as shown in FIG.
The valley portion 105a of the bellows portion 105 is fixed by bonding or the like, and the pressurizing tube 103 is inserted into the end portion 106 so as to be airtight by bonding or the like. Therefore, compared to the eighth disclosure example, since one long sheet is used, the creation is easy.

FIG. 44 shows a tenth disclosed example. As in the ninth disclosed example, the bellows portion 105 of the balloon 107 is formed by folding one non-extensible sheet 108. Then, the container portion 109 on the hand side of the balloon 107 is formed by blow molding, and is air-tightly fixed at the end portion 106 by bonding or the like.

The following disclosed example is a forceps raising mechanism using a chemomechanical actuator instead of the above-described forceps raising mechanism by fluid pressure.

FIGS. 45 and 46 show an eleventh disclosed example. The forceps raising stand 110 includes a hard container 111 and an elastic membrane 1 made of a material such as silicon, latex, or urethane.
12 are provided. The container section 111 is divided into a first space section 114 and a second space section 115 by a filter 113 which is transparent and allows the passage of an aqueous solution to be described later. An extra-fine optical fiber 117 for light irradiation is provided in an end portion 116 of the container 111 in an airtight manner, and light can be irradiated from the tip of the optical fiber 117 by operation on the hand side. An aqueous solution 118 is filled in the first space 114, and a chemomechanical gel 119 is expanded in the second space 115 by light irradiation and contracts by non-light irradiation.
Is provided by filling.

As the chemomechanical gel 119, for example, acrylamide containing triphenylmethane leucocyanide is used. Then, the forceps raising stand 110
Is installed in the endoscope 1 as shown in FIG.

The forceps raising table 110 thus configured is
After the treatment instrument 98 is inserted through the endoscope channel, the distal end of the treatment instrument 98 is positioned on the elastic film 112. Then, light from a light source (not shown) is transmitted to the container unit 1 by the operation unit on the hand side.
Irradiate inside 11. The light reaches the chemomechanical gel 119 via the transparent filter 113. The chemomechanical gel 119 is ion-dissociated by the light irradiation, and the aqueous solution 118 moves from the first space 114 to the second space 115 via the filter 113 by the osmotic pressure. The chemomechanical gel 119 is an aqueous solution 1
18 and expand as shown in FIG. And
The elastic film 112 extends along with the expansion, and the treatment tool 98 rises.

When light irradiation from the optical fiber 117 is stopped, the chemomechanical gel 119 discharges the aqueous solution 118 and contracts. Then, the aqueous solution 118 is supplied to the second space 1
15 to the first space 114. Thereby, the forceps raising table 110 falls down.

As described above, since the forceps raising table is driven by utilizing the swelling pressure of the chemomechanical gel, a high swelling pressure is generated, and the treatment tool is reliably raised. Also, the driving operation on the hand side is easier than the fluid pressure balloon type.

FIGS. 47 and 48 show a twelfth disclosed example. A chemomechanical gel 119 driven by applying a voltage is provided in the second space 115 of the container 111, and electrodes 120 are provided on both upper and lower ends thereof so that a DC voltage can be applied. The electrically driven chemomechanical gel 11
Examples of 9 include, for example, sodium polyacrylate, PA
MPS or the like is used. A lead wire 121 is connected to the electrode 120, and is led out to the operation unit on the hand side. Other configurations are the same as those of the eleventh disclosed example.

A direct current is applied to the chemomechanical gel 119 via the lead wire 121 and the electrode 120 by operating the operation unit on the near side of the endoscope (not shown). As a result, the chemomechanical gel 119 becomes the aqueous solution 1 in the first space 114.
Then, the treatment tool 98 is swollen by absorbing the same and the treatment tool 98 is raised as in the eleventh disclosed example. When a direct current is applied in the opposite direction to the above, the chemomechanical gel 119 contracts by discharging the aqueous solution 118, and the forceps raising table 110 falls down.

FIG. 49 is a thirteenth disclosed example. In the twelfth disclosure example, a bulk-shaped electrically driven chemomechanical gel 119 is used, whereas in the present disclosure example, the electrically driven spheroidal chemomechanical gel 122 is placed in the second space 115. It is provided. Other configurations are the same as those of the twelfth disclosure example.

According to the present disclosure, as compared with the twelfth disclosure, the chemomechanical gel has a small spherical shape, so that the responsiveness is excellent and the driving speed of the forceps elevator 110 is improved.

FIG. 50 is a fourteenth disclosed example. Thirteenth
Instead of the small spherical chemomechanical gel 122 of the disclosure example, a plurality of electrically driven sheet-like chemomechanical gels 123 are laminated in the second space 115, and the thin film electrode 124 is provided in a gap between the respective chemomechanical gels 123. Is provided. The voltage from the lead wire 121 can be applied to the sheet-like chemomechanical gel 123 by the thin film electrode 124.

Therefore, when a voltage is applied to the thin film electrode 124 via the lead wire 121, each sheet-like chemomechanical gel 123 swells or contracts in the thickness direction, and the forceps raising table 110 can be driven.

On the other hand, the endoscope is used not only for observing the inside of the body cavity but also for performing a pathological diagnosis by cutting out a piece of tissue at a specific lesion, or performing a treatment using a simple surgical tool. Too many things to do. Therefore, a treatment tool raising device for guiding the treatment tools to a target site in a body cavity through a channel of the endoscope is an important function of the endoscope.

Conventionally, the most commonly used treatment instrument raising apparatus has a forceps raising table having one end pivotally mounted in a raising chamber at the distal end of the endoscope, and the rotation of the forceps raising table. Raising operation was performed by pulling the side tip with an operation wire. And the operation wire was guided to the operation end side of the endoscope through the guide tube opened to the raising room.

However, the raising operation of the raising table is performed by pulling the operation wire extending to the hand side.
The structure for fixing the operation wire to the elevator and the rotation of the elevator are complicated, and it is necessary to provide a wire guide sheath to enable the operation wire extending to the hand side to slide. There was a problem that the diameter of the endoscope was increased or the effective area was reduced.

The following discloses an endoscope which is structurally simple, does not increase the diameter of the insertion portion, or can increase the effective area.

FIGS. 51 to 58 show a fifteenth disclosure example.
In FIG. 51, reference numeral 131 denotes a side-view type endoscope including an operation unit 132 and an insertion unit 133. The insertion portion 133 is provided at the distal end of the flexible tube portion 134 via a curved tube portion 135.
6 is provided, and the bending tube section 135 can be remotely bent by an operation knob 137 provided on the operation section 132.

The operation section 132 includes an eyepiece section 138, a forceps insertion port 139, and operation buttons 140 for air supply, liquid supply, suction, and the like.
And a universal cord 141 connected to a light source device (not shown).

On the other hand, an illumination window 142 and an observation window 143 are provided on the side surface of the distal end component 136.
An open rising chamber 144 having this side surface is formed. Illumination light output from the light source device is emitted from the illumination window 142, and a portion illuminated by the illumination light passes through the observation window 143 to the eyepiece 138.
Can be observed at

The endoscope 131 has an operation section 132 and an insertion section 133, and a channel 14 for inserting a treatment tool.
5 are formed. The rear end of the channel 145 communicates with the forceps insertion opening 139, and the front end of the channel
44. Therefore, the forceps insertion opening 13
The treatment tool 146 inserted into the channel 145 from 9 is
It can be guided into the body cavity via the raising room 144.

In the elevating chamber 144, a plate-shaped elevating body 147 has one end having a channel 145 formed in a side wall of the erecting chamber 144.
Is provided in connection with a portion below the open end.
The elevating body 147 is composed of a pipe member 148 made of a Ti-Ni-based or Cu-Zu-Al-based shape memory alloy exhibiting a shape memory effect, and as shown in FIG.
It is attached to the part 4 and can be attached and detached. The pipe member 148 is attached to the channel 14
The pipe member 148 having a slightly larger size is pushed into and fixed to the tube 149 of the portion 5 or by adhesion.

The treatment instrument 146 inserted into the channel 145 is, for example, a biopsy forceps as shown in FIG. 54, and the distal end cup 32 is opened and closed by pushing and pulling the handle 161 on the hand side. . A heater 164 is provided near the distal end of the sheath 163 of the treatment tool 146, and the control of the heating of the heater 164 is performed by the control device 165. Pressing an operation button 166 provided on the handle 161 as shown in FIG. 56 instructs heating control to the heater 164. The heater 164 provided in the vicinity of the distal end of the sheath portion 163 is, for example, a linear wire wound or a sheet-shaped wire wound into a cylinder, and the outside is covered with a protective tube 167. ing. When the treatment tool 146 is inserted into the channel 145 of the endoscope 131 and operated, the heater 16 provided on the sheath portion 163 of the treatment tool 146 as shown in FIG.
Reference numeral 4 denotes an internal position of the pipe member 148.

According to the above configuration, the treatment instrument 146 is inserted into the channel 145 as shown in FIG.
The operation button 166 provided at the position of the handle 161 of FIG. 6 is pressed to turn it on to heat the heater 164, and the heat generated by the heater 164 heats the pipe member 148, which is a shape memory alloy. As a result, the pipe member 148 has the memorized bending shape as shown in FIG. 58, and the treatment tool 146 is largely curved.
When the operation button 166 is turned off and the heating of the heater 164 is stopped, the heating of the pipe member 148 is also stopped, the temperature decreases, and the pipe member 148 returns to the original shape as shown in FIG. In other words, the pipe member 148 is a bidirectional shape memory alloy that has a largely bent shape when heated and becomes substantially linear when cooled. Then, in this bent state, the treatment tool 1
The biopsy is performed by operating the handle 161 at 46.

Therefore, the structure is simple, and the size of the forceps raising table can be reduced, so that the insertion portion does not have a large diameter.

In the fifteenth disclosed example, the sheath of the treatment tool 146 may be a pipe made of a superelastic alloy. With this configuration, when the heater 154 provided on the treatment tool 146 is heated, the heat heats the pipe member 148, and the bending force of the pipe member 148 is reduced by the sheath portion of the treatment tool 146 made of a superelastic alloy. Bend more than elastic. When the heating of the heater 154 is stopped, the sheath portion 1 of the treatment instrument 146 becomes smaller than the bending force of the pipe member 148.
The elastic force of 53 exceeds its original shape. In this case, the pipe member 148 may be a one-way shape memory alloy or a two-way shape memory alloy. In two directions, there is no need for a return force, but it will be returned with a superelastic force. Therefore, at the time of cooling, the speed at which the forceps raising table is returned can be increased and can be reliably returned.

FIG. 59 shows a sixteenth disclosed example, in which a wire member 150 is connected to the distal end of a pipe member 148 by welding, brazing, or the like. This connecting portion is connected and fixed in the direction opposite to the bending direction of the pipe member 148, that is, below the pipe member 148 in the drawing.

The pipe member 148 may be made of a two-way or one-way shape memory alloy. Others are the same as the fifteenth disclosed example.

The heating method for the pipe member 148 is described in the fifteenth method.
By the same method as the disclosed example. Stop heating and pipe member 1
When the wire member 150 is pulled from the hand side when returning the 48, the wire member 150 is eccentrically fixed with respect to the pipe member 148, so that the shape is returned from the curved shape to the straight state. If the pipe member 148 is made of a two-way shape memory alloy, the shape returns to its original shape without applying a force when the heating is stopped. In this case, however, the wire member 150 is returned to the original shape by pulling the wire member 150. Others are the same as the fifteenth disclosed example.

FIGS. 60 and 61 show a seventeenth disclosed example, in which a plate-like superelastic alloy plate 15 is provided inside a pipe member 148.
1 and the other configuration is the same as the sixteenth disclosed example.

The operation is basically the same as that of the fifteenth and sixteenth disclosed examples. When the pipe member 148 is heated via the heater attached to the treatment tool, the pipe member 148 is opposed to the superelastic alloy plate 151. 148 is curved and returns to its original shape by the force of the superelastic alloy plate 151 when heating is stopped.

FIG. 62 shows an eighteenth disclosed example, in which the endoscope 1 is used.
31 is the same as the fifteenth disclosed example. A projection 153 is provided on a part of the sheath of the treatment tool 152. Others are the same as the fifteenth disclosed example.

The bending of the pipe member 148 is performed by the heater 164 provided on the treatment tool 152 in the same manner as in the fifteenth embodiment, and when returning the bending, the projection 153 of a part of the sheath of the treatment tool 152 is connected to the pipe member 148. The bending shape is returned to the original shape by locking at a position opposite to the bending direction of the above and pulling the treatment instrument 152 from the hand side.

FIG. 63 shows a nineteenth disclosed example. As another method of returning the curved shape of the pipe member 148 to the superelastic alloy rod whose distal end is memorized as the bent shape, the plate 1 is used.
54 is inserted into the channel so as to have a shape opposite to the bent shape of the pipe member 148, and is forcibly returned to the original state by the force of the superelastic alloy rod 154.

FIG. 64 shows a twentieth disclosure example, in which the endoscope 1 is used.
31 is the same as that of the fifteenth disclosed example. In addition to this, in addition to a normal treatment tool 155 to be inserted into the channel 145, a superelastic alloy rod 1 having a heater 168 wound around the outside is provided.
It consists of 56. The heater 168 includes a control device during heating control and an operation unit for operating heating as in the fifteenth disclosed example.

Basically, it is the same as the fifteenth disclosed example, except that the heating means for the pipe member 148 is provided independently of the treatment tool, and the pipe member 148 is connected via the superelastic alloy rod 156 having the heating means. This is to perform a bending operation by heating. Therefore, the heating means is not provided for each of the treatment tools, and the heating means is shared, so that any treatment tool can be used and the cost is reduced.

FIG. 65 shows a twenty-first disclosure example in which the endoscope 1 is used.
The configuration of 31 is the same as that of the fifteenth disclosure example. Operation buttons 171a, 171b provided on the handle 161 are provided at a plurality of locations such as heaters 169a, 169b, 169c in the sheath portion of the treatment instrument, and connected to the control means 170 so that they can be independently heated. Each of the heaters 171c heats the heater 169a, 169b, 169c. Others are the same as the fifteenth disclosed example.

As in the fifteenth disclosed example, the channel 145
The treatment tool 156 is put in the inside, the heater is heated, and the pipe member 148 is bent to bend the treatment tool 156. When the treatment tool 156 is short in the length from the raising chamber 144, the heater 169a
Is positioned at the pipe member 148, and when the distal end portion of the treatment tool 156 is further protruded, the heaters 169b, 1
The heaters 169a, 169b, and 169c can be selectively heated by the length of the treatment tool 156 such as 69c.

[0129] The length of the treatment instrument to be taken out of the raising room can be selectively selected, and the heating range of the heater can be minimized (there is no heating of an unnecessary portion). It doesn't need to be large.

FIGS. 66 and 67 show a twenty-second disclosure example, and the configuration of an endoscope 131 is the same as that of the fifteenth disclosure example. The treatment tool 157 includes a sheath portion 172 made of a superelastic alloy having a bent end portion, and a heater 173 is wound around a bent portion of the sheath portion 172. The shape of the pipe member 148 when heated and the bent shape of the sheath portion 172 of the treatment tool 157 have substantially the same curvature. Others are the same as the fifteenth disclosed example.

When the treatment instrument 157 is inserted into the channel 145 of the endoscope 131, and the bent portion of the sheath 172 and the pipe member 148 are located at the same position, the sheath 17
By bending the pipe member 148 by the bending force of the superelastic alloy No. 2 and further heating the heater 173, the pipe member 148 is easily bent, and the bent shape is more easily exhibited. In addition, the heating of the heater 173 is stopped, and the treatment tool 157 is rotated from the hand side as shown in FIG. 67, or is slightly pulled, thereby returning the bending of the pipe member 148 to the original as shown by the arrow in the figure. Therefore, the pipe member on which the forceps are raised can be bent to a greater extent, and even if the treatment tool has a large diameter, it is possible to raise the force reliably without insufficient power. The shape of the pipe member 148 may be a straight shape at the time of heating and a bent shape at the time of cooling.

In the fifteenth to twenty-second disclosures, when the heater is heated, ON / OFF control is performed by pressing an operation button on the treatment instrument handle as an example. As another example, the heating amount is increased only while the operation button is pressed, the heating amount becomes constant when the operation button is stopped, and the heating is stopped when the OFF button is pressed. It may be provided to increase the heating amount in an analog manner.

Further, as shown in FIG.
74, the lever 175 of the joystick 174
The heating amount may be controlled in accordance with the amount of heat applied. Therefore, the angle of raising the forceps can be controlled as needed, so that the operability of the treatment tool is good.

According to the above disclosed example, the following configuration is obtained.

(Supplementary Note 21) A channel for inserting a treatment tool of an endoscope, a raising room formed at an outlet of the channel,
In the treatment instrument raising device including the raising device installed in the raising room, the raising device is a shape memory alloy whose shape is changed by a temperature change, and the raising device, which is a shape memory alloy, is heated. A treatment tool raising device, wherein a heating means for heating is provided on the treatment tool inserted into the treatment tool channel.

(Supplementary note 22) The treatment instrument raising apparatus according to supplementary note 21, wherein the elevating body is formed in a cylindrical shape such as a pipe or a coil.

(Supplementary note 23) The treatment instrument raising apparatus according to supplementary note 21, wherein the raising body is detachable from the raising chamber.

(Supplementary note 24) The treatment tool raising apparatus according to supplementary note 21, wherein the heating means is formed by winding a heater provided around the outer periphery of the treatment tool.

(Supplementary Note 25) The supplementary note 2 is characterized in that the heater has a linear shape and is wound around the outer periphery of the treatment tool.
5. The treatment instrument raising device according to 4.

(Supplementary note 26) The treatment instrument raising apparatus according to supplementary note 24, wherein the heater has a sheet shape and the treatment instrument is attached in a longitudinal direction.

(Supplementary Note 27) The supplementary note 2 wherein the heating means is provided with the length of the elevating body substantially in the same range.
The treatment instrument raising device according to claim 1.

(Supplementary note 28) The supplementary note 21, wherein the heating means is provided in a range longer than the length of the erecting body.
The treatment instrument raising device according to the above.

(Supplementary note 29) The treatment instrument raising apparatus according to supplementary note 21, wherein the heating means is provided at a plurality of portions in the longitudinal direction on the treatment instrument, and a control means for independently heating is provided.

(Supplementary Note 30) The supplementary note 21, wherein when the treatment tool is put into the treatment tool insertion channel, at least a part of the treatment tool at the position of the raising body is made of a unitary alloy. Treatment instrument raising device.

(Supplementary note 31) The treatment instrument raising apparatus according to supplementary note 21, wherein a linear superelastic alloy material is provided inside the elevating body.

(Supplementary Note 32) The treatment tool is bent.
22. The treatment instrument raising apparatus according to claim 21, wherein the shape of the raising body made of a shape memory alloy is substantially the same as the shape at the time of heating.

(Supplementary Note 33) A channel for inserting a treatment tool of an endoscope, a raising room formed at an outlet of the channel,
In the treatment instrument raising device including the raising device installed in the raising room, the raising device is a shape memory alloy whose shape is changed by a temperature change, and the raising device, which is a shape memory alloy, is heated. A treatment tool raising device, wherein a heating means independently inserted into the treatment instrument insertion channel is provided as a heating means for performing the treatment.

(Supplementary note 34) The treatment instrument raising apparatus according to supplementary note 33, wherein the heating means is provided with a heater at an end of a long and narrow rod-shaped member.

(Appendix 35) The treatment instrument raising apparatus according to Appendix 33, wherein the rod-shaped member is made of a superelastic alloy.

FIGS. 69 and 70 show the twenty-third disclosed example, in which an automatic diaphragm device 183 is provided at a distal end component 182 provided at the distal end of an insertion portion 181 of an endoscope.
The insertion section 181 contains an image guide fiber 184 and a light guide fiber 185, and a front end of the image guide fiber 184 is provided with an objective lens 186 opposed thereto via the automatic aperture device 183.

The front end of the light guide fiber 185 is opposed to the illumination window 187, and is provided with a light irradiating section 188 which branches and irradiates light toward the automatic aperture device 183. The automatic drawing device 183 is made of a shape memory element, and usually has a through hole 189 as shown in FIG.
Has a small diameter, but when heated, the shape of the through-hole portion 189 is memorized so as to expand to a large diameter as shown in FIG. 70 (b).

When the light irradiating section 188 irradiates the automatic aperture device 183 with light, the automatic aperture device 183 is heated, and the through-hole portion 189 is changed from the state shown in FIG. 70A to the state shown in FIG.
When light irradiation is stopped, the through hole 189 changes from the state shown in FIG. 70 (b) to the state shown in FIG. 70 (a). Therefore, the optimum light amount can be automatically obtained by the automatic aperture device 183. In addition, there is an effect that the structure is simpler than a mechanical diaphragm device, and the diameter of the insertion portion 181 of the endoscope can be reduced.

[0153]

As described above, according to the present invention, in an endoscope provided with a treatment tool having a drive unit, the operation means for operating the drive unit can be detachably attached to the operation unit of the endoscope. With the provision, the operator can operate the endoscope and the treatment tool, and there is an effect that the operability of the treatment tool can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an entire endoscope system according to a first embodiment of the present invention.

FIG. 2 is a longitudinal side view of a part of the endoscope of the embodiment.

FIG. 3 is a partially cutaway perspective view of the operation unit of the endoscope according to the embodiment;

FIG. 4 is an exemplary perspective view of an operation panel according to the embodiment;

FIG. 5 is an exemplary perspective view of an operation panel according to the embodiment;

FIG. 6 is an exemplary perspective view of an operation panel showing a modification of the embodiment;

FIG. 7 is a vertical sectional side view showing a fitting structure of the operation panel showing a modification of the embodiment.

FIG. 8 is a configuration diagram of an operation panel showing a modification of the embodiment.

FIG. 9 is a perspective view of a treatment tool and an operation panel according to a second embodiment of the present invention.

FIG. 10 is a perspective view of an operation unit of an endoscope according to a third embodiment of the present invention.

FIG. 11 is a perspective view of an entire endoscope system according to a fourth embodiment of the present invention.

FIG. 12 is a side view of the treatment tool of the embodiment.

FIG. 13 is a longitudinal sectional side view of the treatment tool of the embodiment.

FIG. 14 is a side view of the rack and pinion mechanism of the embodiment.

FIG. 15 is a sectional view taken along the line AA in FIG. 13;

FIG. 16 is a vertical side view of the distal end portion of the endoscope according to the embodiment;

FIG. 17 is a perspective view of the biopsy forceps of the embodiment.

FIG. 18 is a block diagram showing the operation of the embodiment.

FIG. 19 is a side view of a biopsy forceps showing a modification of the embodiment.

FIG. 20 is a sectional view taken along the line BB of FIG. 19;

FIG. 21 is a side view of a treatment tool according to a fifth embodiment of the present invention.

FIG. 22 is a vertical side view of the distal end portion of the endoscope according to the embodiment;

FIG. 23 is a perspective view of an operation unit according to a sixth embodiment of the present invention.

FIG. 24 is a vertical side view of the operation unit of the embodiment.

FIG. 25 is a longitudinal sectional side view showing a distal end portion of an endoscope provided with a forceps raising stand.

FIG. 26 is a perspective view of a forceps raising base showing the first disclosure example;

FIG. 27 is a cross-sectional view of the balloon of the example of the disclosure.

FIG. 28 is a perspective view of a forceps raising base showing a second disclosure example.

FIG. 29 is a cross-sectional view of a balloon according to the embodiment of the disclosure.

FIG. 30 is a longitudinal sectional side view of a forceps raising stand showing a third disclosure example.

FIG. 31 is a plan view of the disclosure example.

FIG. 32 is a longitudinal sectional side view of a forceps raising stand showing a fourth disclosure example.

FIG. 33 shows the forceps elevator according to a fifth disclosed example at the time of contraction;
(A) is a vertical front view, (b) is a vertical side view.

FIG. 34 shows the forceps raising stand of the disclosure example when inflated,
(A) is a vertical front view, (b) is a vertical side view.

FIGS. 35A and 35B show a sixth disclosure example, in which FIG. 35A is a longitudinal sectional front view of a forceps raising stand, and FIG.

FIG. 36 is a longitudinal sectional side view of the forceps raising stand when the metallic bellows is contracted, showing the seventh disclosure example.

FIG. 37 is a longitudinal sectional side view of the forceps raising stand when the metallic bellows is extended, showing the disclosure example.

FIG. 38 is a plan view of a non-extensible sheet according to an eighth disclosure example.

FIG. 39 is a perspective view of the non-extensible sheet showing the example of the disclosure in a folded state.

FIG. 40 is a perspective view of a Harisen-shaped balloon according to the embodiment of the disclosure.

FIG. 41 is a plan view of a non-extensible sheet according to a ninth disclosure example.

FIG. 42 is a sectional view of the balloon manufacturing process showing the example of the disclosure;

FIG. 43 is a sectional view of a balloon manufacturing process showing the example of the disclosure;

FIG. 44 is a sectional view of a balloon showing a tenth disclosure example;

FIG. 45 is a longitudinal sectional side view of a forceps raising stand according to an eleventh disclosed example.

FIG. 46 is a longitudinal side view of the forceps raising stand in the raised state, showing the example of the disclosure;

FIG. 47 is a longitudinal side view of a forceps raising stand according to a twelfth disclosure example.

FIG. 48 is a longitudinal sectional side view showing the example of the disclosure and showing a forceps raising stand in a raised state.

FIG. 49 is a longitudinal sectional side view of a forceps raising stand showing a thirteenth disclosure example;

FIG. 50 is a longitudinal side view of a forceps raising stand according to a fourteenth disclosure example;

FIG. 51 is a perspective view of an endoscope showing a fifteenth disclosure example;

FIG. 52 is a side view of the distal end of the endoscope according to the embodiment of the disclosure;

FIG. 53 is a longitudinal side view of the distal end portion of the endoscope according to the embodiment of the disclosure;

FIG. 54 is a side view of the treatment tool according to the disclosed example.

FIG. 55 is a longitudinal sectional side view of the treatment tool according to the embodiment of the disclosure;

FIG. 56 is a side view of the handle according to the embodiment of the disclosure.

FIG. 57 is a vertical side view of the distal end portion of the endoscope according to the embodiment of the disclosure;

FIG. 58 is a longitudinal sectional side view of the distal end portion of the endoscope according to the embodiment of the disclosure;

FIG. 59 is a longitudinal sectional side view of a distal end portion of an endoscope showing a sixteenth disclosure example.

FIG. 60 is a longitudinal side view of a distal end portion of an endoscope showing a seventeenth disclosure example.

FIG. 61 is a sectional view taken along the line CC in FIG. 60;

FIG. 62 is a longitudinal sectional side view of a distal end portion of an endoscope showing an eighteenth disclosed example.

FIG. 63 is a longitudinal sectional side view of a distal end portion of an endoscope showing a nineteenth disclosure example.

FIG. 64 is a longitudinal side view of a distal end portion of an endoscope showing a twentieth disclosure example;

FIG. 65 is a side view of a treatment tool according to a twenty-first disclosure example.

FIG. 66 is a longitudinal sectional side view of the distal end portion of the endoscope before a treatment tool is inserted, showing the twenty-second disclosure example.

FIG. 67 is a longitudinal sectional side view of the distal end portion of the endoscope after the treatment tool is inserted, showing the example of the disclosure;

FIG. 68 is a side view of the treatment tool showing a modification of the embodiment of the disclosure.

FIG. 69 is a longitudinal sectional side view of a distal end portion of an endoscope showing a twenty-third disclosure example;

FIG. 70 is a front view of the automatic aperture device according to the embodiment of the disclosure;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope 2 ... Insertion part 3 ... Operation part 10 ... Treatment tool 22 ... Open / close switch (operation means) 23 ... Curve switch (operation means)

Claims (1)

[Claims] 1. An endoscope system comprising a treatment tool having a drive unit used under observation of an endoscope, wherein an operation means for operating the drive unit of the treatment tool is provided on the operation unit of the endoscope. An endoscope system provided detachably.