JPH0194844A - Resectoscope - Google Patents

Abstract

PURPOSE:To enhance electrical stability, by mechanically connecting the connection part provided to the rear end of the end part of an electrode device to the slider of a handle part and connecting the leading end electrode ot the electrode device to a high frequency power supply through an electrical connection means. CONSTITUTION:The insert part 21 of an optical sight tube 4 is inserted in the optical sight tube guide pipe 22 of a handle 3 and the optical sight tube 4 is connected to the handle 3 by an optical sight tube connection part 23. Next, the insert part 21 of the optical sight tube 4 is inserted in the stabilizer 43 of an electrode device 5 and the shaft part 41 of the electrode device 5 is laterally inserted in the electrode insert groove 32 of a sheath connection part 16 and, further, a connector 45 is laterally introduced into the electrode fixing groove 31 of a slider 25 under pressure to mount the electrode device 5 to the handle 3. Next, a rubber packing 6 is introduced into an electrode insert groove 32, in which the shaft part 41 of the electrode device 5 is inserted, under pressure. The part thus assembled is inserted in the sheath 12 and the connector 47 of the electrode device 5 is connected to a high frequency power supply.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a resectoscope that improves electrical safety and stability and allows for a simple mechanism for attaching and detaching an electrode device.

[Prior Art] In recent years, it has become possible to observe organs within a body cavity by inserting an elongated insertion section into a body cavity, and to perform various therapeutic procedures as needed using a treatment instrument inserted into a treatment instrument channel. Endoscopes are widely used.

The endoscope includes a resectoscope that is inserted through the urethra to perform excision treatment of an enlarged coexistence line.

In this resectoscope, a sheath is inserted into the urethra, and a handle in which an electrode device, an optical viewing tube, and an electric field are assembled is passed through the sheath, and a high-frequency current is applied to the electrode device. Surgery to remove the prostate gland and the like is commonly performed in the urology field.

By the way, conventionally, for example, Utility Application No. 6'1-733, 8
Electrode device, handle as shown in No. 8 light I @.

The electric cord is separate, and the electrode device and the electric cord are respectively attached to and detached from the slider of the handle.

[Problems to be Solved by the Invention] However, in the case of a structure in which the electrode device is attached to and detached from the slider, it is difficult to make the connection part within the slider watertight.
Electricity leakage is likely to occur, which may cause burns, etc. In particular, when a disinfectant solution containing a surfactant is used, there is a high possibility that this solution will enter the narrow gap inside the connection part, form an electrical path, and cause electrical leakage.

Further, dirt, blood, etc. are likely to adhere to the inside of the connecting portion, and there is a risk that a stable output may not be obtained due to poor electrical contact or failure of the attachment/detachment mechanism.

Furthermore, separate mechanisms for attaching and detaching the electrode device and the electric cord are required, resulting in a complicated structure, an increase in the size of the slider, and a problem in that it is easily broken.

[Object of the Invention] The present invention has been made in view of the above circumstances, and can improve electrical safety and stability by eliminating electrical leakage, poor contact, etc., and also improves electrical safety and stability of the electrode device. ? The purpose of the present invention is to provide a resectoscope that can easily remove I1m.

[Means for Solving the Problems] The resectoscope of the present invention has an external electrical connection means for electrically connecting the tip electrode and a high-frequency power source at the rear end of the shaft of the electrode device. The electrode device is connected to the slider in an insulated state, and is provided with a connecting portion mechanically detachably connected to the slider at the rear end of the shaft portion of the electrode device.

[Function] In the present invention, the connection portion provided at the rear end of the shaft portion of the electrode device and the slider of the handle portion are mechanically connected, and the tip electrode of the electrode device is connected via the electrical connection means. An electrical connection is made with the high frequency power source.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

1 to 5 relate to a first embodiment of the present invention, in which FIG. 1 is a side view showing the entire resectoscope, FIG. 2 is a perspective view of the sheath, and FIG. 3 is a view showing the optical viewing tube. FIG. 4 is a perspective view of the assembled handle, FIG. 4 is a perspective view of the electrode device, and FIG. 5 is a perspective view of the rubber gasket.

As shown in FIG. 1, the resectoscope 1 includes a sheath 2 indicated by a two-dot chain line, a handle 3 connected to the rear end of the sheath 2, and a handle 3 inserted into the sheath 2. It includes an optical viewing tube 4, an electrode device 5 that is inserted into the sheath 2 from the handle 3, and a rubber gasket 6 that maintains watertightness between the sheath 2 and the handle 3.

As shown in FIG. 2, the sheath 2 has an elongated insertion vibrator 11 that can be inserted into the urethra, and an insulating beak 12 is connected to the distal end of the insertion vibrator 1. Note that the insertion pipe 11 is connected to the insulation beak 12.
It may be formed integrally with an insulating material. The insertion pipe 1
1 has a water supply port 14 with a cock 13 for supplying perfusion fluid into the bladder through the inside of the sheath 2, and a fitting port into which the sheath connecting portion 16 of the handle 3 can be inserted and attached. 17, and a sheath main body 19 is provided with an attachment/detachment button 18 for fixing the sheath connection portion 16 to the fitting opening 17, for example, for engaging and disengaging a click mechanism.

As shown in FIG. 3, in the handle 3, an optical tube guide tube 22, which is inserted through the insertion section 21 of the optical tube 4, is fitted and connected to the sheath connecting section 16. The distal end side of the tube guide tube 22 is adapted to be inserted into the sheath 2.

On the other hand, the rear end side of the optical viewing tube guide tube 22 is protruded to the rear of the sheath connecting portion 16, and an optical viewing tube connecting portion 23 is provided at the rear end. , the optical viewing tube 4 can be detachably inserted and connected.

Between the sheath connection part 16 and the optical tube connection part 23,
A slider 25 that slides in the axial direction along the optical viewing tube guide tube 22 is disposed.

This slider 25 is made of an insulating material such as Teflon,
A guide tube hole 26 through which the optical viewing tube guide tube 22 is inserted is provided through the slider 25 in the axial direction. The slider 25 is provided with a finger hook 27 below the finger hooks 27a and 27b that protrude upward and downward from the sheath connecting portion 16.
For example, it is biased by a spring 28 installed between it and b so as to come into contact with the rear optical viewing tube connecting portion 23. Although the spring 28 is a plate spring in the illustrated example, it may be a coil spring connected through two links, or a coil spring provided between the sheath connecting portion 16 and the slider 25.

Further, a finger ring 29 is provided at the rear lower part of the slider 25.

In this example, 1. On the front side of the slider 25, there is an electrode fixing device which is opened at the lower side of the guide tube hole 26 at one side and front side of the slider 25, press-fits the electrode device 5, and fixes it detachably. A groove 31 is formed. Further, the electrode device 5 is inserted into the sheath connection portion 16, and the electrode insertion W4 is further inserted into which the rubber gasket 6 is press-fitted.
32 is formed extending from the side of the sheath connecting part 16 to the lower side of the optical tube guide tube 22 and passing through the front and back of the sheath connecting part 16. Incidentally, the electrode fixing groove 31?
The tf pole insertion groove 32 is open on the same side.

The optical viewing tube 4 also includes an insertion section 21 and an insertion section 2.
1, a light guide connector 35 provided on the side of the main body 34, and an eyepiece 36 continuous to the rear end of the main body 34. Inside the optical viewing tube 4, there is a light guide fiber (not shown) that guides illumination light from the light guide connector 35 to the tip of the insertion section 21, and an objective optical system (not shown) provided at the tip of the insertion section 21. An image transmission optical system (not shown) is provided to transmit an observation image formed by the eyepiece 36 to the eyepiece 36.

Further, as shown in FIG. 4, the electrode device 5 has a shaft portion 41 that is inserted into the sheath 2, and the distal end side of the shaft portion 41 is bifurcated into two parts. For example, a loop-shaped excision tip electrode 42 is provided. By applying a high-frequency current to the tip electrode 42, it is possible to perform treatments such as resection or incision of an affected area (prostate, etc.), or hemostasis of a bleeding area. Incidentally, a stabilizer 43 having a cylindrical shape, for example, through which the insertion portion 21 of the optical viewing tube 4 can be inserted is attached to the upper part of the shaft portion 41 . Furthermore, a connector 45 that is press-fitted into the electrode fixing groove 31 of the slider 25 is connected to the rear end of the shaft portion 41 . An electric cord 46 serving as an electric connection means is connected to the side of the connector 45, and a connector 47 connected to a high frequency power source (not shown) is provided at the tip of the electric cord 46. An electric cable (not shown) connected to the tip electrode 42 is inserted into the shaft portion 41, and the rear end of this electric cable is connected to the electric cord 46.
and are electrically connected within the connector 45. The outer portion of the connector 45 is made of an insulating material such as Teflon, and the inside is electrically insulated from the outside. Further, the electrode device 5 is electrically insulated from the outside except for the tip electrode 42 and the insertion end 47a of the connector 47. By connecting the connector 47 to a high frequency power source (not shown), a high frequency current is applied to the tip electrode 42.

By the way, the electrode fixing groove 3 formed in the slider 25
1 is formed in a substantially rectangular parallelepiped shape that is open at one side and the front side of the slider 25, and the rear side is formed deeply, and a step portion 31a is formed between the front side and the rear side. Further, the connector 45 is formed in a shape corresponding to the electrode fixing groove 31, that is, a substantially rectangular parallelepiped shape with the rear side of the bottom protruding downward, and a stepped portion 45a is formed between the front side and the rear side. has been done. The connector 45 is press-fitted into the electrode fixing groove 31 from the side opening. Further, the stepped portion 3 of the electrode fixing groove 31
1a and the step portion 45a of the connector 45 prevents the connector 45 from coming out from the front of the electrode fixing groove 31.

Further, the electrode insertion groove 3 formed in the sheath connection part 16
A guide plate 32a is formed at the upper center in the axial direction of 2 in a direction substantially orthogonal to the axial direction.

After the shaft portion 41 of the electrode device 5 is inserted into the electrode insertion groove 32 through the side opening, the rubber backing 6 is press-fitted therein. This rubber packing 6 is attached to the electrode insertion groove 32 in the state where the shaft portion 41 is inserted.
It is formed in a shape that fills it. That is, it is formed into a substantially plate shape, and the inner end surface is formed into a concave surface so as to be in close contact with the shaft portion 41, and the outer end surface is press-fitted into the electrode insertion groove 32 and the sheath connecting portion 16. It is formed so as to be continuous with the outer circumferential surface, and is in close contact with the inner circumferential surface of the sheath 2 into which the sheath 2 is fitted, thereby maintaining watertightness. Further, a protrusion 6a corresponding to the guide groove 32a is formed on the upper part, and the engagement between the guide groove 32a and the protrusion 6a prevents the rubber packing 6 from moving back and forth.

Next, the operation of this embodiment configured as above will be explained.

The resect scope 1 of this embodiment is assembled as follows. First, insert the insertion part 21 of the optical viewing tube 4 into the optical viewing tube guide tube 22 of the handle 3, and
3 connects the optical viewing tube 4 to the handle 3. Next, the insertion portion 21 of the optical viewing tube 4 is inserted into the stabilizer 43 of the electrode device 5, and then the shaft portion 41 of the electrode device 5 is inserted into the stabilizer 43 of the electrode device 5.
is inserted into the electrode insertion groove 32 of the sheath connecting portion 16 from the side, and the connection PI 45 is press-fitted into the electrode fixing groove 31 of the slider 25 from the side to attach the electrode device 5 to the handle 3. Then, the rubber gasket 6 is press-fitted into the electrode insertion groove 32 into which the shaft portion 41 of the electrode device 5 is inserted.Then, the sheath connection of the handle 3 with the optical viewing tube 4 and the electrode device 5 assembled in this way is performed. The portion in front of the section 16 is inserted into the sheath 2, and the sheath connecting section 16 is fitted and connected to the fitting opening 17 of the sheath 2. Also, the connector 4 of the electric bridge device 5
7 is connected to a high frequency power source (not shown), and a light guide cable connected to a light source device (not shown) is connected to the light guide connector 35 of the optical viewing tube 4.

In the resectoscope 1 assembled in this way, the finger hooks 27a, 27b and finger hooks of the handle 3 are connected to the slider 25 by the connecting portion 45 by moving the slider 25 back and forth by the action of the finger gripping the ring 29. The mechanically connected electrode device 5 moves back and forth, and the tip electrode 42 is protruded and retracted from the tip of the sheath 2.

In addition, the high frequency current from the high frequency power supply is transmitted through the electrical cord 46.
The electric power is transmitted to the tip electrode 42 via the electric cable in the shaft portion 41, and the tip electrode 42 can be used to perform treatments such as resection or incision of an affected area (prostate, etc.), or hemostasis of a bleeding area.

In this embodiment, the electrode device 5 is electrically insulated from the outside except for the tip electrode 42 and the insertion end 47a of the connector 47. Therefore, the high frequency current is
without passing through uninsulated electrical connections within 5.
Electrical cord completely insulated from the outside 46. Connector 45.
Since the electricity is transmitted to the tip electrode 42 through the shaft portion 41, electrical leakage can be prevented and electrical safety is improved.

Furthermore, since there is no electrical connection mechanism within the slider 25,
Stable high frequency output can be obtained without contact failure.

Furthermore, since there is no electrical connection mechanism within the slider 25,
The mechanism for attaching and detaching the electrode device 5 can be made simple by press-fitting it into the electrode fixing groove 31, and the slider 25 can be made smaller and lighter. Therefore, fatigue during operation can be reduced.

Further, the slider 25 has no moving parts for attaching and detaching the electrode device, and even if dirt, blood, etc. adhere to it, cleaning is easy, and there is no malfunction or failure of the attaching/detaching mechanism.

6 and 7 relate to a modification of the first embodiment, FIG. 6 is a perspective view showing the tip side of the electrode device, and FIG.
It is an A-line sectional view.

In this modification, the shape of the stabilizer 49 attached to the shaft portion 41 of the electrode device 5 is made into a semi-cylindrical shape with an axial cross section of a semicircle, and as shown in FIG. The opening in the radial direction of the stabilizer 49 is arranged at an upper part inclined slightly to the side so that the insertion part 21 of the optical viewing tube 4 can be inserted from the side into the stabilizer 49 when the stabilizer 49 is installed in the stabilizer 49. It is. The rest of the configuration is the same as that of the first embodiment.

According to this modification, when attaching the electrode device 5 to the handle 3, the insertion portion 21 of the optical viewing tube 4 can be inserted into the stabilizer 49 from the side.
1 into the stabilizer, the mounting becomes easy, and the shaft portion 41 can be mounted without bending.

8 and 9 relate to a second embodiment of the present invention, FIG. 8 is a partially cutaway perspective view showing the operation part of the handle, and FIG. 9 is a perspective view showing the M section side of the electrode device. .

In this embodiment, as shown in FIG. 8, similarly to the first embodiment, the electrode insertion groove 32 extends from the side of the sheath connection portion 16 to the lower side of the optical tube guide @22. It is formed by passing through the front and back of the. Further, a tapered surface 1 formed on the distal end side of the sheath connecting portion 16 and having a small diameter on the distal end side.
From 6a to the inside in the radial direction, a gasket groove 51 has a substantially fan-shaped axial cross section and opens on the same side as the opening of the electrode insertion groove 32, so as to intersect with the electrode insertion groove 32 in the perpendicular direction. It is formed.

Further, the slider 25 has an electrode fixing groove 52 formed in a rectangular parallelepiped shape that is open on one side and the front surface, and the slider 2
A vertical groove 53 that opens at the side and bottom surfaces of the slider 25 is formed over the bottom surface of the slider 5 . Further, a click hole 55 is provided from the top surface of the slider 25 to the electrode fixing groove 52.
is formed. The click hole 55 has a small-diameter locking portion 56 at the end on the electrode fixing groove 52 side, and a female thread is formed at the end on the upper surface side of the slider 25. Inside the click hole 55 is a stopper bin 57 that includes a stopper portion 57a having a larger diameter than the locking portion 56, and a bottle portion 57b connected to the stopper portion 57a and having a smaller diameter than the locking portion 56. , the bottle portion 57b is arranged so that a predetermined amount protrudes toward the electrode fixing groove 52 side.

Further, a screw 58 is screwed into the female thread of the click groove 55, and this screw 58 and the click bin 57 are screwed together.
The click bin 57 is provided between the stopper portion 57a and
A click spring 59 is installed to bias the electrode fixing groove 52 toward the electrode fixing groove 52.

In this embodiment, instead of the spring 28 in the first embodiment, there is a
Links 61a and 61b are installed. Said link 6
This link 61a, 61b is attached to the connecting part of 1a, 61b.
For example, a coil spring 62 is attached to bias the slider 25 in the opening direction, and the coil spring 62 causes the slider 25 to
For example, it is biased toward the optical viewing tube connecting portion 23 side.

On the other hand, as shown in FIG.
A gasket 66 that is press-fitted is slidably fitted. This gasket 66 is formed to have a substantially fan-shaped cross section corresponding to the gasket hole 51, and the outer peripheral surface 66a is formed in the gasket groove 51.
The tapered surface 1 of the sheath connecting portion 16 is press-fitted into the
6a, and is formed so as to be continuous with the fitting opening 17 of the sheath 2.
It is designed to maintain watertightness by closely adhering to the inner circumferential surface of the

In addition, the connector 71 connected to the rear end of the shaft portion 41 is
It has a rectangular parallelepiped-shaped main body 72 corresponding to the electrode fixing groove 52 and a rectangular parallelepiped-shaped lower body 73 that projects below the main body 72 and can be inserted into the vertical groove 53. An electric cord 74 electrically connected to the tip electrode 42 is connected to the lower end of the lower body 73, and a connector 75 is provided at the end of the electric cord 74. The connector 75 is connected to the plug 76b of an electrical connection cord 76, which has a connector 76a connected to a high frequency power source and a plug 76b connected to the connector 75 at each end. The electrode device 65 is connected to a high frequency power source via the electrical connection cord 76.

Further, the click bin 57 is provided on the upper surface of the main body 72.
The bin portion 57 of this click bin 57 is placed at a position corresponding to
A conical hole 77 into which b is inserted is provided.

The other configurations are the same as in the first embodiment.

In this embodiment, when fixing the electrode device 65 to the handle 3, the shaft portion 41 of the electrode device 65 is inserted from the side into the electrode insertion groove 32 of the sheath connecting portion 16, and the shaft portion 41
The gasket 66 that has been slid into the gasket 66 is press-fitted into the gasket hole 51. Further, the connector 71 is inserted into the electrode fixing groove 52 and the vertical groove 53 from the side so that the main body 72 fits in the electrode fixing groove 52 and the lower body 73 fits in the vertical groove 53, respectively. Then, the bin portion 57b of the click bin 57 is inserted into the conical hole 77 of the main body 73, whereby the electrode device 65 is detachably connected to the slider 25. In addition, the lower body 7
3 and the longitudinal groove 53, the electrode device 65 is fixed to the slider 25 so as not to move back and forth.

According to this embodiment, the electrode device 65 can be securely fixed by the click pin 57, and the gasket 66 can be attached to the electrode device 65.
Since it is slidably fitted onto the shaft portion 41 of the holder, there is no risk of it being lost.

Further, since the electric cord 74 is connected to the lower part of the handle 3, even when holding the handle 3 with the left hand, the electric cord 74 does not touch the hand and does not interfere with the operation. Furthermore, since the electrical cord 74 is short and can be separated from the electrical connection cord 76 near the connector 71, the electrode device 65
Easy to attach and detach.

The function and effect of this function are the same as those of the first embodiment.

10 to 12 relate to the third embodiment of the present invention,
FIG. 10 is a partially cutaway perspective view showing the operating section of the handle, FIG. 11 is a perspective view of the gasket, and FIG. 12 is a perspective view showing the base side of the electrode device.

In this embodiment, as shown in FIG. 10, similarly to the second embodiment, from the tapered surface 16a of the sheath connecting portion 16 to the inside in the radial direction, the electrode insertion groove 32 is perpendicularly intersected. A vertical groove 81 having a substantially fan-shaped axial cross section is formed, and a tapered surface 1 of the sheath connecting portion 16 is continuous with the vertical groove 81 at the same position in the axial direction as the vertical groove 81.
A circular circumferential groove 82 opening at 6a is formed.

Further, the slider 25 has an electrode fixing groove 52 formed in the shape of a rectangular parallelepiped that is open on one side and the front surface, and a bottom surface of the electrode fixing groove 52 in a direction substantially perpendicular to the axial direction. , a guide groove 83 that opens at the side of the slider 25 is formed. A screw hole 85 is formed from the bottom of the slider 25 through the bottom of the electrode fixing groove 52, and a screw 86 longer than the screw hole 85 is inserted from the bottom of the slider 25 into the screw hole 85. is screwed in.

On the other hand, as shown in FIG. 11, the packing 91 that is press-fitted into the vertical groove 81 and circumferential groove 82 of the sheath connecting portion 16 is
an annular portion 92 that fills the entire circumference of the circumferential groove 82; and an inner fruit portion 93 that is formed inside the annular portion 92 and fills the vertical groove 81 and has a substantially fan-shaped axial cross section. have. The outer circumferential surface 92a of the annular portion 92 is connected to the circumferential groove 8.
2, it is formed so as to be continuous with the tapered surface 16a of the sheath connecting part 16, and the fitting opening 1 of the sheath 2
7 to maintain watertightness. In addition, the shaft portion 4 of the electrode device 101 is attached to the inner stem portion 93.
1 is formed with a shaft hole 94 that is slidably fitted into the shaft portion 4 .
1 into the shaft hole 94.
A slot 95 is formed from the outer peripheral surface 92a of the shaft hole 94 to the shaft hole 94.

Further, the connector 102 connected to the rear end of the shaft portion 41 has a rectangular parallelepiped-shaped main body 10 corresponding to the electrode fixing groove 52.
3, and a rectangular parallelepiped-shaped protrusion 104 that protrudes below the main body 103 and can be inserted into the guide groove 83, and a side portion of the protrusion 104 is electrically connected to the tip electrode 42. Electric cords 74 are connected in series. Further, a screw hole 105 into which the screw 86 is screwed is formed at the bottom of the main body 103.

The other configurations are the same as those in the first and second embodiments.

In this embodiment, the shaft portion 41 of the electrode device 101 is inserted into the shaft hole 94 through the slot 95 with the packing 91 fitted around the longitudinal groove 81 and circumferential groove 82 of the sheath connection portion 16 . Further, the connector 102 is inserted into the electrode fixing groove 52 and the guide groove 83 from the side of the slider 25, and is inserted into the screw hole 1
It is fixed to the slider 25 by screwing the screw 86 into the slider 25.

According to this embodiment, since the electrode device 102 is fixed by the screw 86, it will not come off due to unforeseen circumstances.

Other functions and effects are the same as those in the first and second embodiments.

13 and 14 relate to a fourth embodiment of the present invention, FIG. 13 is a partially cutaway perspective view showing the operating section of the handle, and FIG.
FIG. 4 is a perspective view showing the base side of the electrode device.

In this embodiment, as shown in FIG.
1 to 11. An electrode insertion hole 32 is formed, and a protruding ring 112 is formed on the outer periphery of the optic tube guide tube 22 in front of the sheath connecting portion 111.

Further, the slider 25 is formed with a rectangular parallelepiped-shaped electrode fixing groove 52 that is open on one side and the front surface, and the slider 25 is connected to the slider 25 from approximately the center in the axial direction of the bottom surface of the electrode fixing groove 52. A guide groove 113 that opens at the side surface of the slider 25 is formed over the bottom surface of the slider 5 . Furthermore,
One of the bottoms of the electrode fixing groove 52 divided into front and rear parts by the guide groove 113, for example, the rear rear floor 114,
A slit 115 is formed in the same direction as the guide groove 113, and between the guide groove 113 and the slit 115,
A beam 116 is formed. Guide groove 1 of this beam 116
A triangular protrusion 117 is formed on the side surface on the 13 side.

On the other hand, as shown in FIG.
A gasket 122 is slidably fitted into the.

This packing 122 is connected to the front end of the sheath connecting portion 111. A hole 123 through which the optical viewing tube guide tube 22 is inserted is formed in the gasket 122 so as to pass therethrough in the axial direction. A fitting annular groove 124 is formed. In addition, the above-mentioned packing 1
The outer peripheral surface of J3 is formed into a tapered surface 125.
This tapered surface 125 closely contacts the inner circumferential surface of the fitting opening 17 of the sheath 2 to maintain watertightness.

Further, the connector 131 connected to the rear end of the shaft portion 41 is connected to a rectangular parallelepiped-shaped main body 13 corresponding to the electrode fixing groove 52.
2, and a rectangular parallelepiped-shaped protrusion 133 that protrudes below the main body 132 and can be inserted into the guide groove 113,
An electric cord 74 electrically connected to the tip electrode 42 is connected to the bottom of the protrusion 133 . Further, on the rear end surface of the protrusion 133, a triangular groove 134, into which the triangular protrusion 117 fits, is provided at a position corresponding to the triangular protrusion 117.
is formed.

The other configurations are the same as those in the first and second embodiments.

In this embodiment, the optical viewing tube guide tube 22 is inserted into the hole 123 of the packing 122, and the protruding ring 112 and the annular groove 124 are fitted to connect the packing 122 to the front of the sheath connecting portion 111. The tapered surface 125 of the packing 122 is in close contact with the inner circumferential surface of the fitting opening 17 of the sheath 2 to maintain watertightness.

At the same time, the shaft portion 41 of the electrode device 121 is inserted into the electrode insertion groove 3.
At the same time, the connector 131 is inserted into the electrode fixing groove 52 and the guide groove 113 of the slider 25 through the triangular protrusion 117.
By inserting the beam 116 until the triangular groove 134 is fitted, the elastic force of the beam 116 keeps the triangular protrusion 117 in the triangular groove 1.
34 side, and the connector 131 is fixed to the slider 25.

According to this embodiment, the mechanism for fixing the electrode device 121 on the slider 25 is simpler, less likely to break down, and the handle 3 is simple.
can be provided.

Other functions and effects are the same as those in the first and second embodiments.

FIG. 15 is a partially cutaway perspective view showing a resectoscope according to a fifth embodiment of the present invention.

In the resectoscope 200 of this embodiment, an electrode insertion hole 201 is formed below the optical viewing tube guide tube 22 of the sheath connection portion 16 of the handle 3 and penetrates in the axial direction.

The electrode device 210 of this embodiment includes an electrode drive shaft 211 that is slidably inserted into the electrode insertion hole 201 and whose rear end is fixed to the slider 202 of the handle 3; An electrode section 212 detachably connected to the tip, an electric cord 213 extending from, for example, the bottom of the slider 202, and a connector 214 provided at the tip of the electric cord 213 and connected to a high frequency power source (not shown). It is equipped with The electrode drive shaft 211 is
The outer portion is made of an insulating material, and an electric cable 216 is passed through the inside. This electric cable 216 is connected to the electric cord 2 inside the slider 202.
It is connected to 13.

The slider 202 has a watertight structure, and the electrical connection between the electric cable 216 and the electric cord 213 in the slider 202 is insulated from the outside.

An electric connector 218 connected to the electric cable 216 is provided inside the tip of the electrode drive shaft 211, and an electrode fixing bin 219 is provided on the lower side of the outer periphery.
Furthermore, a stabilizer 220 having a cylindrical shape, for example, through which the optical viewing tube guide tube 22 is inserted, is attached to the upper side of the outer periphery.

On the other hand, the electrode section 212 includes an electrode body 222 having, for example, a loop-shaped tip electrode 221 on the tip side, and an electrical connector provided at the rear end of this electrode body 222 and electrically connected to the tip electrode 221. 223, and an electrode fixture 224 which is connected to the lower side of the electrode main body 222 and is rotatable because it has a hole 225 into which the electrode fixing bottle 219 is inserted.
and, for example, a cylindrical stabilizer 226 attached to the upper side of the electrode body 222 and into which the optical tube guide tube 22 is inserted. The electrode main body 222 and the electrode fixture 224 are integrally molded, for example, from polypropylene or the like, and the joint between the two can be repeatedly bent.

The electrode section 212 inserts the optical viewing tube guide tube 22 into the stabilizer 226 and connects the electrical connector 223 and the electrical connector 218, and also connects the electrical connector 223 and the electrical connector 218 to the hole 2 of the electrode fixture 224.
25 into the electrode fixing pin 219, it is electrically and mechanically connected to the electrode drive shaft 211.

The electrical connector 218 and the electrical connector 223 are connected within the electrode drive shaft 211, and the electrode portion 212
When the electrode drive shaft 211 is connected to the electrode drive shaft 211, the inside of the electrode drive shaft 211 is kept watertight so that the electrical connection between the electrical connector 218 and the electrical connector 223 is insulated from the outside. It has become.

Further, the inner circumferential surface of the optical viewing tube guide tube 22 and the sheath 2 (not shown in FIG. 15) are formed of an insulating material.

The other configurations are the same as in the first embodiment.

The resect scope 200 of this embodiment is assembled as follows. That is, the optical tube 4 is connected to the handle 3, and the electrode section 212 is connected to the tip of the electrode drive shaft 211. The handle 3 with the optical viewing tube 4 and the electrode part 212 assembled in this way is connected to the sheath 2. Further, a connector 214 provided at the tip of the electric cord 213 is connected to a high frequency power source (not shown). A light guide cable connected to a light source device (not shown) is connected to the light guide connector 35 of the optical viewing tube 4.

In the resect scope 200 assembled in this way,
The finger rests 27a and 27b of the handle 3 and the finger rest are ring 2.
By moving the slider 202 back and forth by the action of the finger gripping the slider 9, the electrode drive shaft 211 connected and fixed to the slider 202 moves back and forth.
The tip electrode 221 of the electrode section 212 connected to the tip of the sheath 2 is projected and retracted from the tip of the sheath 2.

In addition, the high frequency current from the high frequency power supply is
3. The information is transmitted to the tip electrode 221 via the electric cable 216 and the electric connectors 218 and 223 in the electrode drive shaft 211, and the tip electrode 221 is used to cut or incise the affected area (prostate, etc.), or to stop bleeding from a bleeding area. Treatment can be performed.

In the electrode device 210 in this embodiment, the electrode portion 212 and the electrode drive shaft 211 are electrically connected at a portion on the distal end side of the handle 3 inserted into the sheath 2. The parts other than this electrical connection part are electrically insulated from the outside, and this electrical connection part is also insulated from the outside when connected. Additionally, members around the electrical connection between the electrode section 212 and the electrode drive shaft 211, ie, the optical viewing tube guide tube 22° electrode drive shaft 211. The inner surface of the sheath 2 and the like are formed of an insulating material. Therefore, the high frequency current is transmitted to the electrical cord 213, which is insulated from the outside, without passing through an uninsulated electrical connection within the slider as in the conventional case. Electrical cable 216 within electrode drive shaft 211. electrical connector 218
．． 223 to the tip electrode 221,
Electrical leakage can be prevented and electrical safety is improved.

Further, since there is no electrical connection mechanism within the slider 202, a stable high frequency output can be obtained without causing poor contact.

Furthermore, since there are no electrical and mechanical connection mechanisms within the slider 202, the slider 202 can be made smaller and lighter.

Furthermore, in the electrode device 210, a plurality of electrode parts 212
On the other hand, the electrode drive shaft 211 is shared, and the number of parts to be replaced, that is, the structure of the electrode section 212, is reduced, so it is possible to reduce costs when using multiple types of electrode devices 210.

In this embodiment, even if high-frequency current leaks from the electrical connection between the electrode section 212 and the electrode drive shaft 211, the high-frequency current will not flow through the perfusion because the surrounding members are made of an insulating material. There is no risk of sparks or burns.

FIG. 16 is a perspective view showing a connecting portion between an electrode portion and an electrode drive shaft in a sixth embodiment of the present invention.

In this embodiment, an electrode fixing pipe 232 is attached above the distal end of the electrode drive shaft 231, into which the optical viewing tube guide tube 22 is slidably inserted. This electrode fixing pipe 232
The top side of the tip is cut out to form a hook portion 232a. Furthermore, an electrical connector 233 is provided at the tip of the electrode drive shaft 231.

On the other hand, the electrode part 234 is, for example, a saddle-shaped stabilizer 23
Tip electrode shafts 236a, 236b are attached to the front side of both sides of the tip ffi? @11236a, 23
A loop-shaped tip electrode 237 is attached between the tips of 6b. Cords 238 and 238 extend from the rear ends of the tip electrode shafts 236a and 236b, respectively, and the electrical connector 2
An electrical connector 239 is provided which connects to 33. Further, on the rear end side of the stabilizer 235, a hook portion 23 that engages with the hook portion 232a of the electrode fixing pipe 232 is provided.
5a is formed.

The other configurations are the same as in the fifth embodiment.

In this embodiment, the stabilizer 235 of the electrode section 234 is
The stabilizer 235 is fitted into the optical viewing tube guide tube 22 from above, and the hook portion 235a of the stabilizer 235 is attached to the electrode fixing pipe 232.
By engaging the hook portion 232a of the electrode portion 234
and the electrode drive shaft 231 are mechanically connected. Furthermore, by connecting the electrical connector 239 of the electrode section 234 and the electrical connector 233 of the electrode drive shaft 231, the electrode section 2
34 and the electrode drive shaft 231 are electrically connected.

Other functions and effects are similar to those of the fifth embodiment.

FIG. 17 is a perspective view showing a handle and an electrode device in a seventh embodiment of the present invention.

In this embodiment, an optical viewing tube guide tube 241 is installed longitudinally penetrating approximately the center of the sheath connecting portion 16 of the handle 3 from the sheath connecting portion 16 to the optical viewing tube connecting portion 23 . the optical tube guide tube 24 of the sheath connection part 16;
1, there are electrode insertion holes 242a, 2 which pass through the front and back.
42b is provided. These electrode insertion holes 242a, 2
42b has electrode mounting shafts 244a and 244b, respectively.
is slidably inserted through the electrode mounting shaft 244a.

The rear end portion of 244b is connected to a slider 245 provided between the sheath connection portion 16 and the optical viewing tube connection portion 23. The electrode attachment shaft 244a.

The tip side of 244b is supported by a semi-cylindrical stabilizer 246 so that one electrode attachment @244a can rotate. Furthermore, a female thread 247 is formed at the tip of one electrode attachment shaft 244a, and an electrical connector 248 is provided at the tip of the other electrode attachment shaft 244b. This electrical connector 248 connects the electrode drive shaft 24
Through an electric cable (not shown) inserted into 4b,
It is connected to an electrical cord 213. Further, a rotation knob 249 is provided on the side of the slider 245, and by rotating the rotation knob 249, one electrode mounting shaft 244a is rotated via a power transmission mechanism (not shown) inside the slider 245. It has become so.

On the other hand, in the electrode part 251, for example, a tip electrode shaft 2538° 253b is attached to both sides of a semi-cylindrical stabilizer 252, and a loop-shaped tip @electrode 254 is attached between the tips of the tip electrode shaft 2538° 253b. installed. The rear end of one tip electrode shaft 253a is provided with the male screw 24.
A male thread 255 is formed to be screwed into 7. Further, an electrical connector 256 connected to the tip electrode 254 and the electrical connector 248 is provided at the rear end of the other tip N'M polar shaft 253b.

In this embodiment, the male screw 255 of the electrode part 251 is inserted into the female screw 247 of the electrode mounting @244a, and the slider 24
Rotate the rotation knob 249 of No. 5 to rotate the electrode mounting shaft 2.
By rotating 44a, the male thread 255 and female thread 247 are screwed together, and the electrode portion 251 is mechanically connected to the electrode attachment shaft 244a. At the same time, by connecting the electrical connector 256 of the electrode section 251 to the electrical connector 248 of the electrode mounting shaft 244b, the electrode section 251 connects to the electrical cord 2 through the electrical cable within the electrode mounting shaft 244b.
13.

Other functions and effects are similar to those of the fifth embodiment.

FIG. 18 is a partially cutaway perspective view showing a handle and an electrode device according to an eighth embodiment of the present invention.

In this embodiment, an optical viewing tube guide tube 261 is provided below the sheath connecting portion 16, and an electrode insertion hole 262 that penetrates the sheath connecting portion 16 back and forth is provided above the optical viewing tube guide tube 261. It is provided.

An electrode drive shaft 264 whose rear end is connected and fixed to the slider 263 is inserted into the electrode insertion hole 262 . The distal end side of this electrode drive shaft 264 is connected to the optical viewing tube guide tube 2.
61 and inserted into the stabilizer 265. Further, a male thread 267 is formed on the outer periphery of the tip of the electrode drive shaft 264, and an electrical connector 268 is formed inside.
is provided.

On the other hand, the electrode part 271 has a tip electrode shaft 2 on the upper part of the stabilizer 272 through which the insertion part of the optical viewing tube (not shown) is inserted.
73 is attached, and a loop-shaped tip electrode 274 is attached to the tip of this tip electrode shaft 273. A female screw portion 275 that is screwed into the male screw 267 is rotatably attached to the rear end of the tip electrode shaft 273.
An electrical connector 276 is provided inside 75 to be connected to the tip electrode 274 and to the electrical connector 268 .

The other configurations are the same as in the fifth embodiment.

In this embodiment, by rotating the female screw portion 275 of the electrode portion 271 and screwing it into the male screw portion 267 of the electrode drive shaft 264, the electrode portion 271 is mechanically connected to the electrode drive wheel 264, and the electric connector 268.276 are connected and electrically connected as well.

Other functions and effects are similar to those of the fifth embodiment.

FIG. 19 shows the handle and T in the ninth embodiment of the present invention.
It is a perspective view showing an i-electrode device.

In this embodiment, as in the seventh embodiment, the optical viewing tube guide tube passes through the approximate center of the sheath connecting portion 16 of the handle 3 in the front and back, and from the sheath connecting portion 16 to the optical viewing tube connecting portion 23. 241 has been constructed.

Electrode insertion holes 242a and 242b penetrating back and forth are provided on both sides of the optical viewing tube guide tube 241 of the sheath connecting portion 16.
is provided. One electrode insertion hole 242b has an electrode mounting shaft 28 whose rear end is connected and fixed to the slider 281.
2 is slidably inserted. This electrode mounting shaft 282
An electrical connector 283 is provided at the tip.

Furthermore, an electrode insertion hole 284 is formed on the front surface of the slider 281 coaxially with the other electrode insertion hole 242a. Furthermore, an attachment/detachment button 285 is provided on the side of the slider 282 to operate an attachment/detachment mechanism (not shown) in the electrode insertion hole 284 to attach/detach the electrode.

On the other hand, in the electrode part 291, a short tip electrode shaft 293 is attached to the side of the semi-cylindrical stabilizer 292 on the electrode attachment shaft 282 side, and a long tip electrode shaft 294 is attached to the other side. A loop-shaped tip electrode 295 is attached between the tips of the tip electrode shafts 293 and 294. An electrical connector 296 connected to the electrical connector 283 is provided at the rear end of the tip electrode shaft 293. Further, at the rear end of the tip electrode shaft 294, there is a hook-shaped connection, for example, which is inserted into the electrode insertion hole 284 of the slider 281 and fixed to the slider 281 by an attachment/detachment mechanism (not shown) in the electrode insertion hole 284. Part 297
is formed.

The tip electrode shaft 294 is connected to the electrical connector 296 of the electrode section 291 and the electrical connector 283 of the electrode mounting shaft 282, and the connecting section 297 is connected to the slider 281.
The length is such that it can be inserted and fixed into the electrode insertion hole 284 of the electrode.

The other configurations are the same as in the fifth embodiment.

In this embodiment, the electrical connector 296 of the electrode section 291 is
By connecting the electrode attachment shaft 282 to the electrical connector 283, the electrode portion 291 and the electrode attachment shaft 282 are electrically connected, and the tip electrode shaft 29 of the electrode portion 291 is connected to the electric connector 283 of the electrode attachment shaft 282.
4 into the electrode insertion hole 242a of the sheath connection part 16,
The electrode section 291 and the slider 281 are mechanically connected by inserting the rear end of the tip electrode shaft 294 into the electrode insertion hole 284 of the slider 281 and fixing it to the slider 281.

Other functions and effects are similar to those of the fifth embodiment.

FIG. 20 is a perspective view showing a handle and an electrode device in a tenth embodiment of the present invention.

In this embodiment, the slider 301 has a linear hole 302a formed in the rear axial direction from the front end surface, and this hole 302a.
An electrode insertion hole 302 is provided, which includes an arc-shaped hole 302b that communicates with the slider 301 and extends from the rear end of the hole 302a to the lower end surface of the slider 301. In addition, the sheath connection part 1
6 is provided with an electrode insertion hole 201 as in the fifth embodiment.

The electrode device 310 in this embodiment has an electrode drive shaft 3'11
and an electrode portion 212 connected to the tip of the electrode drive shaft 311 in the same manner as in the fifth embodiment, for example. The electrode drive shaft 311 has a rigid and linear rigid part 31.
2, and a soft part 313 connected to the rear end of this hard part 312. At the tip of the rigid portion 312, an electrical connector 218 and an electrode fixing pin 219 are provided, as in the fifth embodiment. An electrode section 212 similar to that of the fifth embodiment is connected to the tip of this rigid section 312. On the other hand, the flexible portion 313
An electrical connector 315 is provided at the rear end of the electrode drive shaft 311, and the electrical connector 315 and the electrical connector 218 are electrically connected by an electrical cable 216 inserted into the electrode drive shaft 311. Further, the electrical connector 315 is connected to an electrical connector 317 of an electrical cord 316 that is connected to a high frequency power source (not shown). 1 The electrode drive shaft 311 is inserted into the electrode insertion hole 201 of the sheath connection part 16 and the electrode insertion hole 302 of the slider 301 from the flexible part 313 side, and the rear end of the hard part 312 is inserted into the electrode insertion hole 302 of the slider 301. The flexible part 313 is inserted into the linear hole 302a, and the flexible part 313 is inserted into the arc-shaped hole 302b of the electrode insertion hole 302, so that the rear end of the flexible part 313 is led out from the lower end surface of the slider 301. It has become.

Further, a screw hole communicating with the linear hole 302a of the electrode insertion hole 302 is formed in, for example, a side portion of the slider 301, and the hardness of the electrode drive shaft 311 inserted into the hole 302a is inserted into the screw hole. Screw 318 fixing part 312
is screwed in.

In this embodiment, an electrode drive shaft 311 is inserted into the electrode insertion hole 201 of the sheath connection part 16 and the electrode insertion hole 302 of the slider 301, and the electrode drive shaft 311 is fixed to the slider 301 with a screw 318. Further, the electrode section 212 is connected to the tip of the electrode drive shaft 311, and an electric cord 316 is connected to the electric connector 315 at the rear end.

According to this embodiment, the electrode drive shaft 311 of the electrode device 310 is also replaceable, so when the electric cable 216 in the electrode drive shaft 311 is broken, etc., the electrode drive shaft 311 can be replaced.
Only 1 can be exchanged.

Other functions and effects are similar to those of the fifth embodiment.

In this embodiment, the electrode drive shaft and the electrode device may be connected by a connection means as shown in the sixth embodiment or the eighth embodiment. In addition, the electrode drive shaft 31
1 and the slider 301 is not limited to the screw 318, but may also be a click mechanism or the like.

FIG. 21 and FIG. 22 relate to the eleventh embodiment of the present invention,
FIG. 21 is a side view showing the entire resectoscope device;
FIG. 22 is a front view of the tip of FIG. 21.

As shown in FIG. 21, the resectoscope device 320 of this embodiment includes a sheath 321 indicated by a broken line, and a sheath 321 shown by a broken line.
21; a handle 323 connected to the treatment scope 322; and an electrode device 334 connected to the handle 323 and inserted into the treatment instrument channel of the treatment scope 322. ing.

The treatment scope 322 includes, on the distal end side of the main body 331,
An observation optical system vibrator 333 with an internal observation optical system 332 and a light guide vibe 3 with an internal light guide 334
35 and a channel pipe 337 that forms a treatment instrument channel 336 through which the treatment instrument is inserted. Note that the channel pipe 337 is connected to the other vibrator 333.
It is shorter than 335. Furthermore, an eyepiece section 341 is connected to, for example, the upper part of the main body 331.

This eyepiece section 341 includes an eyepiece pipe 342a extending upward from the upper part of the main body 331, and this eyepiece pipe 34a.
2a, and an eyepiece 343 provided at the rear end of the eyepiece pipe 342b.
An optical system for transmitting the Wi image transmitted by the observation optical system in the observation optical system pipe 333 to the eyepiece 343 is provided inside. Further, a connecting portion 345 to which the handle 323 can be connected is provided at the rear end of the main body 331.
is provided.

On the other hand, the handle 323 has a connecting part 352 that has finger hooks 351a and 351b that project upward and downward and is connected to the connecting part 345, a guide @353 that extends rearward from this connecting part 352, and a guide @353 that extends backward from this connecting part 352. It has a slider 354 that slides back and forth along a guide shaft 353, and a spring 355 that is installed between the slider 354 and the lower finger rest 351b and biases the slider 354 backward, for example. Further, the slider 354 is provided with a finger ring 356.

Further, the electrode device 334 has a rear end that is connected to the slider 35.
4 and inserted into the treatment tool channel 336 of the treatment scope 322, and an electrode portion 362 connected to the tip of the electrode drive shaft 361.
It is equipped with The electrode section 362 includes an electrode main body 363 connected to the electrode drive shaft 361, and an electrode main body 363 connected to the electrode drive shaft 361.
The electrode shaft 364 is provided with bifurcated electrode shafts 364, 364 extending from the electrode shaft 63, and a tip electrode 365, for example, loop-shaped, which is installed between the tip portions of the electrode shafts 364, 364.

Note that, as shown in FIG. 22, the electrode shafts 364, 364 are bent so as to avoid the front of the observation optical system 332 and light guide 334 of the treatment scope 322. An electric cable (not shown) that is electrically connected to the tip electrode 365 is inserted into the electrode drive shaft 361, and this electric cable is connected to the electric cord 213 extending from the slider 354. Further, a connector 214 connected to a high frequency power source (not shown) is provided at the tip of the electric cord 213.

Incidentally, as a connection means for connecting the electrode drive shaft 361 and the electrode section 362, for example, the fifth. 6th. Means as shown in the eighth embodiment can be used.

According to this embodiment, the observation optical system and the light guide can be used to connect the electrode drive shaft 361 and the electrode section 362, compared to the case where the optical viewing tube is housed in one pipe and is inserted into the sheath. Since the space inside the sheath 321 can be enlarged, the degree of freedom in designing the connecting portion between the electrode drive shaft 361 and the electrode section 362 increases, and the connection becomes easier.

Other functions and effects are similar to those of the fifth embodiment.

Note that the present invention is not limited to the above embodiments, and for example, in the first to fourth embodiments, as the electrical connection means,
A connector to which an electric cord connected to a high-frequency power source is detachably connected may be provided on the side or bottom of the connection part of the electrode device.

Alternatively, the electrical connection between the electric cord and the shaft of the electrode as an electrical connection means may be provided separately from the connector that is mechanically connected to the slider, for example, on the front side of the connector. good.

[Effects of the Invention] As explained above, according to the present invention, electrical safety and stability can be improved by eliminating electrical leakage, poor contact, etc., and the attachment/detachment mechanism of the electrode device can be simplified. be.

[Brief explanation of the drawing]

1 to 5 relate to a first embodiment of the present invention, in which FIG. 1 is a side view showing the entire resectoscope, FIG. 2 is a perspective view of the sheath, and FIG. 3 is a view showing the optical viewing tube. FIG. 4 is a perspective view of the assembled handle, FIG. 4 is a perspective view of the electrode device, FIG. 5 is a perspective view of the rubber seal, FIGS. 6 and 7 are modifications of the first embodiment, and FIG. 6 is the electrode device. FIG. 7 is a sectional view taken along the line A-A in FIG. 6, FIGS. 8 and 9 relate to the second embodiment of the present invention, and FIG. FIG. 9 is a perspective view showing the base side of the electrode device;
10 to 12 relate to the third embodiment of the present invention,
FIG. 10 is a partially cutaway perspective view showing the operation part of the handle, FIG. 11 is a perspective view of the gasket, FIG. 12 is a perspective view showing the base side of the electrode device, and FIGS. 13 and 14 are views of the present invention. Regarding the fourth embodiment, Fig. 13 is a partially cutaway perspective view showing the operation part of the handle, Fig. 14 is a perspective view showing the base side of the electrode device, and Fig. 15 is a schematic diagram of the fifth embodiment of the present invention. FIG. 16 is a partially cutaway perspective view showing the Zectoscope, and FIG.
7 is a perspective view showing a handle and an electrode device according to a seventh embodiment of the present invention, FIG. 18 is a partially cutaway perspective view showing a handle and an electrode device according to an eighth embodiment of the present invention, and FIG. 19 is a perspective view showing a handle and an electrode device according to an eighth embodiment of the present invention. 20 is a perspective view showing a handle and an electrode device in a 10th embodiment of the present invention, and FIGS. 21 and 22 are a perspective view showing a handle and an electrode device in a 10th embodiment of the present invention. For example, FIG. 21 is a side view showing the entire resect scope equipment, and FIG. 22 is a front view of the distal end of FIG. 21. 1...Resectoscope 2...Sheath 3...Handle 4...Optical viewing tube 5...Electrode device
6...Rubber gasket 25...Slider
41... Shaft portion 42... Tip electrode 45.
...Connector 46...Electrical cord 47...Connector Fig. 3 Fig. 8 46t) Fig. 10 Fig. 11 Fig. 12 Fig. 13 i etc.:)
+33 1j14 Procedure Nefusho (Spontaneous) December 7, 1986

Claims (1)

[Claims] A sheath having an elongated and hollow insertion part to be inserted into the urethra, a handle part having a slider sliding in the axial direction along a guide pipe, the handle part being connected to the sheath, and the handle part being inserted into the guide pipe. an optical viewing tube for observation which is inserted into the sheath, a shaft part whose rear end is connected to the slider, and which is inserted into the sheath; In a resectoscope comprising an electrode device having a tip electrode that is protruded and retracted from the distal end of the sheath by sliding in an axial direction, the tip electrode and a high frequency power source are connected to the rear end of the shaft of the electrode device. An electrical connection means for electrical connection of the electrode device is provided in a row in a state insulated from the outside, and is mechanically attachable to and detachable from the slider at the rear end of the shaft portion of the electrode device. A resectoscope characterized by having a connecting part connected to the resect scope.