CN110840381A

CN110840381A - Endoscope structure

Info

Publication number: CN110840381A
Application number: CN201911288346.5A
Authority: CN
Inventors: 张一�; 陈东
Original assignee: Suzhou Xinguang Medical Technology Co Ltd
Current assignee: Suzhou Xinguang Medical Technology Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-02-28

Abstract

The invention discloses an endoscope structure, which comprises a front end rotating part inserted into a diseased region for peeping the internal condition, a signal wire connecting part connected with external equipment for fixing a signal wire, an operating part shell for supporting other components, and a rotating part which is connected with the operating part shell and can rotate along the axis of the rotating part and is arranged at the position of the front end rotating part close to the operating part shell, and also comprises: diagnose annex passageway, set up in one side of operation portion shell and through pipeline and front end rotating part intercommunication for diagnose the use of relevant apparatus such as annex. The endoscope has the advantages that through the arrangement of the diagnosis and treatment accessory channel, relevant instruments such as corresponding diagnosis and treatment accessories and the like can enter the rotating part at the front end of the insertion part through the working channel, so that the endoscope can realize micro-operation on tissues, and meanwhile, the pressing and liquid pumping mechanism is arranged to flush, administer medicine, sample and the like on the tissue part.

Description

Endoscope structure

Technical Field

The invention relates to the field of medical instruments, in particular to an endoscope structure.

Background

An endoscope as a medical instrument can enter a body through a natural pore canal of a human body for observing the pathological change state of organs or tissues, the technology has been provided with an endoscope structure suitable for various organs after years of development, for a renal endoscope, the structure and the position of the organ are special, so the renal endoscope is often provided with a slender insertion end, but the existing renal endoscope structure can only be used for observing the renal tissues, and when some surgical operations on the kidney are needed, the existing mechanism cannot meet the requirement.

Through patent search, the patent numbers of the published documents are as follows: franchise No. 3476959, announcement day: in the last 15 years, 9 months and 26 days (2003.9.26), a technical scheme is proposed, namely an endoscope, wherein the endoscope is used for observing tissues of a patient and can inject liquid substances such as medicines and the like into the tissues to achieve auxiliary effects such as flushing treatment and the like, but the technical scheme is not enough for modern medical treatment, the product can only be used for observing the tissues, and the product cannot be realized under the condition of needing micro-operation.

Disclosure of Invention

The invention aims to solve the problems and designs an endoscope structure.

The technical solution of the present invention is that an endoscope structure includes a front end rotating portion inserted into a diseased region for observing an internal condition, a signal line connecting portion connected to an external device for fixing a signal line, and an operating portion housing for supporting other members, wherein a rotating portion connected to the operating portion housing and rotatable along an axis thereof is provided at a position of the front end rotating portion close to the operating portion housing, and the technical solution is added with: diagnose annex passageway, set up in one side of operation portion shell and through the pipeline with front end rotating part intercommunication for add external apparatus operating device.

The front end rotating part with the connection structure of operation portion shell specifically does, the front end rotating part is close to the position of operation portion shell be provided with be used for with the rotating part that the operation portion shell is connected, one side of rotating part and with the rotation draw-in groove that the symmetry distributes is seted up to the position of the tip contact of front end rotating part, the operation portion shell be close to the one end of front end rotating part seted up with the connecting block that rotating part structure corresponds, the inboard of connecting block is provided with the location fixture block that becomes the symmetry and distributes, the front end rotating part can rely on the rotating part with the joint structure of connecting block is in the tip of operation portion shell rotates, and its pivoted angular range by the location fixture block is relative the angular range of rotation draw-in groove is confirmed.

The signal line is further described here: the signal wire connecting part is made of soft materials and is clamped at the tail of the operating part shell and can rotate by taking the connecting part as a shaft.

The following further description of the diagnostic accessory channel: a working channel inlet is formed in one side of the operating part shell and is intersected with the axis of the operating part shell, the diagnosis and treatment accessory channel is inserted into the working channel inlet and inclines relative to the axis of the operating part shell, and the diagnosis and treatment accessory channel comprises: the drainage tube is fixed on the shell all the time, and the liquid stop valve is arranged outside the shell, connected with the drainage tube and detachable.

Wherein, the structure of drainage tube specifically is: the drainage tube cavity, the afterbody of drainage tube is provided with working channel, and it passes through working channel with front end rotating part intercommunication be used for with liquid in the front end rotating part is taken out or is sent into outside liquid, the middle part of drainage tube be provided with be used for with operation portion shell joint avoids the ladder snap ring that its self dropped, the head of drainage tube is provided with luer female head, the drainage tube with end the liquid valve and pass through luer female head connects together soon, end the liquid valve and be three way structure, end the one end of liquid valve with the drainage tube is connected, and two other ports can be connected or the shutoff with outside operating equipment.

As an alternative embodiment, diagnose annex passageway and still include the reposition of redundant personnel branch pipe, the reposition of redundant personnel branch pipe set up in diagnose one side of annex passageway and rather than inside conduction, liquid in the front end rotation part flows through will partly get into when diagnosing annex passageway inner chamber among the reposition of redundant personnel branch pipe, the reposition of redundant personnel branch pipe is medical plastic tubing, the reposition of redundant personnel branch pipe is pegged graft diagnose on the annex passageway and both can be split.

In order to ensure the completeness of the technical scheme, the technical scheme further comprises: the pressing and sucking mechanism is arranged on one side of the operating part shell, is communicated with the front end rotating part through a pipeline and is used for sucking tissue fluid; and the bent hand wheel is arranged in the operating part shell and used for controlling the rotation of the front end rotating part, the pressing and sucking mechanism is connected to the other end of the branch pipe, the outer part of the pressing and sucking mechanism is communicated with a liquid pump, and the switching-on and switching-off between the branch pipe and the liquid pump are controlled through the pressing and sucking mechanism.

The endoscope has the advantages that the diagnosis and treatment accessory channel is arranged and consists of the drainage tube and the liquid stop valve, the liquid stop valve is connected with external operation equipment, so that the endoscope can realize micro-operation on tissues and wash the tissue parts, the diagnosis and treatment accessory channel is arranged into a structure combining the drainage tube and the liquid stop valve, the liquid stop valve can be detached without the operation of the external operation equipment, the port of the drainage tube is directly connected with the washing mechanism, and the physiological saline reaches the observation tissues through the port of the drainage tube through the front end rotating part to be washed; and to needing external equipment operation, will end liquid valve threaded connection on the drainage tube, end liquid valve is three-way structure, and one end is connected with the drainage tube, and the washing mechanism is connected to one end, and one end is connected with external operating equipment, and external equipment's miniature operation end enters into the tissue of observing through ending liquid valve, drainage tube, front end rotating part, and the cooperation endoscope realizes when observing work such as the little operation of tissue, very big improvement the practicality and the range of application of endoscope.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a half-section of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the structure of the removal pressing and suction mechanism of the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 4;

FIG. 6 is a first view showing a state of use when the pressing and sucking mechanism of the present invention is not on;

FIG. 7 is a second view showing a state of use when the pressing and sucking mechanism of the present invention is turned on;

FIG. 8 is a schematic view of the structure of the silicone ring of the present invention;

FIG. 9 is a view showing the configuration of a pressing handle according to the present invention;

FIG. 10 is an exploded view of the structure of the present invention;

FIG. 11 is another perspective view structural view of FIG. 10;

FIG. 12 is an enlarged view of the structure of FIG. 11 at C;

FIG. 13 is a first state diagram of the use of the present invention;

FIG. 14 is a second use state diagram of the present invention;

in the figure, 1, a front end rotating part; 2. diagnosing and treating accessory channels; 201. a drainage tube; 202. a liquid stop valve; 203. a stepped snap ring; 3. a working channel; 4. an operation section housing; 5. a pressing and sucking mechanism; 501. a pressing handle; 502. a silica gel ring; 503. a tip; 504. a branch pipe; 505. pressing the base; 506. a return spring; 507. a snap ring; 6. bending the hand wheel; 601. drawing wires; 602. adjusting a hand wheel; 603. a wheel shank; 604. a limiting bulge; 605. a limit baffle; 606. a limiting groove; 607. an adjustment mechanism; 6071. a clearance groove; 6072. a position adjusting block; 6073. clamping; 608. a capillary tube fixing block; 609. an order groove; 610. a capillary tube; 611. an anti-drop plate; 612. a drop-proof groove; 613. a slip-preventing sleeve; 7. a signal line connection portion.

Detailed Description

In order to make the technical solution fully understood by those skilled in the art, the following description is made with reference to the accompanying drawings 1 to 14: the invention relates to a medical endoscope, in particular to a medical endoscope for kidney, biliary tract, bronchus and the like. The front end rotating part 1 of the invention extends into the part to be observed along the natural passage or the tissue incision of the human body, the image of the part can be reflected to the external display screen through the device, and the medical personnel can conveniently analyze the lesion part. Simultaneously this equipment except image transmission function, can also external operating means carry out the operation of operating a little to pathological change position through front end rotating part 1, also can extract the pump body outward, is convenient for chemical examination to the tissue of pathological change position.

The above functions will be explained with reference to the specific structure of the present embodiment:

1. first, the image transmission function of the apparatus as an endoscope is provided. As shown in fig. 1, 2, 13, and 14, a probe is provided at the foremost rotating part of the front rotating part 1, and the acquired image is transmitted to the display device through the front rotating part 1 by the probe, thereby completing the image transmission process. For concrete operation principle and process, reference may be made to the publication No. CN109222854A published japanese 20190118 of "endoscope camera system and image signal transmission method thereof" in the existing patent publication; japanese laid-open patent publication No. CN109222853A published 20190118 of "endoscope and endoscope operation method"; an endoscope probe structure and a urethroendoscope having the same are disclosed in publication No. CN208837903U on Notification No. 20190510.

2. The external operation equipment has the function of micro-operation. As shown in fig. 2-3, in order to meet the requirement of operation treatment on a diseased region in actual work, the invention adds a diagnosis and treatment accessory channel 2 on one side of an operating part shell 4 on the basis of the original structure, and simultaneously sets a working channel 3 between the diagnosis and treatment accessory channel 2 and a front end rotating part 1, the working channel 3 passes through the front end rotating part 1 and extends to the head of the front end rotating part, and a micro operating end (an operating claw or an operating contact) of an external operating device can enter the diseased tissue along the working channel 3 through the diagnosis and treatment accessory channel 2 to perform medical operation on the region. Considering that the diagnostic accessory channel 2 is often butted with an external device, so the head of the diagnostic accessory channel needs to be cleaned and disinfected regularly, in order to facilitate the operation, the diagnostic accessory channel 2 is arranged into a split structure, namely the diagnostic accessory channel is composed of a drainage tube 201 fixed on the shell and a liquid stop valve 202 arranged outside the shell, the drainage tube 201 is directly fixed in the operating part shell 4 at the initial stage of product assembly, and the drainage tube is stably fixed in the operating part shell 4 by arranging a circle of stepped snap ring 203 on the outer side of the drainage tube; the liquid stop valve 202 may be cleaned after each use, or replaced according to different instruments, as long as the liquid stop valve 202 is ensured to be clamped with the drainage tube 201 to form the medical accessory channel 2 of the external device, the specific structure is not limited, but in order to provide a real-time manner, a specific structure is provided, referring to fig. 3, the liquid stop valve 202 is set in a three-way form, wherein the lower end of the three-way structure is connected with the drainage tube 201, the upper end of the three-way structure is an interface connected with the operation end of the external device, the middle part of the three-way structure is an interface for connecting a flushing device, the flushing device can store physiological saline, the physiological saline is conveyed from the port to the operation channel 3 to reach the tissue part of a patient, the tissue is flushed, on one hand, other tissues can be flushed to one side, the endoscope is convenient for external instruments to operate, on the other hand, the endoscope can wash blood and tissue mucus of the tissue part, the endoscope is convenient for observing the tissue part, and a channel for circulating physiological saline is also the working channel 3.

3. Tissue fluid sampling function. As shown in figures 6-9, in the actual work of air pumping, in order to know the condition of the tissue of a patient more accurately, the tissue fluid of the tissue needs to be sampled, tested and processed, in order to meet the requirement, the invention adds a pressing and sucking mechanism 5 on the operating part shell 4, the mechanism is connected with an external liquid pump, the liquid pump is communicated with a working channel 3 in the product of the invention by manually pressing a control button on the mechanism, the tissue fluid is sucked into the liquid pump through the working channel 3, and the tissue fluid is taken away and tested by a person after a certain amount. The specific structure of the pressing and attracting mechanism 5 and its operation will be described below: the pressing and sucking mechanism 5 is provided with a pressing handle 501 and a silicon rubber ring 502, the center of the silicon rubber ring 502 is provided with a notch, the center of the pressing handle 501 is provided with a sharp head 503, in a natural state, the notch in the center of the silicon rubber ring 502 is closed, and is used for blocking the liquid flowing in the shunt branch pipe 504 to prevent the liquid from flowing to the outside, at the moment, if the pressing handle 501 is manually pressed, the pressing handle 501 moves downwards, the sharp head 503 falls down and is inserted into the notch in the center of the silicon rubber ring 502 to open, and the liquid in the shunt branch pipe 504 can pass through the notch to enter the pump body under the. The pressing handle 501 and the silicone ring 502 are core components of the pressing suction mechanism 5, but only the two structures cannot form a complete mechanism, so that a pressing base 505 and a return spring 506 are added on the basis, wherein the pressing base 505 is arranged at the bottom of the silicone ring 502 and fixed in the operating part shell 4, and the center of the pressing base is provided with a hole communicated with the shunt branch pipe 504 for supporting and fixing the silicone ring 502 and aligning the central port of the silicone ring 502 with the shunt branch pipe 504; the spring sets up in the outside of pressing base 505 for push back according to handle 501 reversal, avoid pressing handle 501 and can't kick-back and lead to the unable interrupt of process that the drawing pump absorbed the tissue fluid after pressing down, for better cooperation spring, offered round snap ring 507 in the outer lane position of pressing handle 501, as shown in fig. 6-7, its holistic working process is: the spring is arranged in a spring snap ring 507 of the pressing handle 501, the spring is compressed when the manual pressing handle 501 falls down, until a tip 503 of the pressing handle 501 is inserted into a central incision of the silicone ring 502 to open the incision, at this time, the drawing pump draws the tissue fluid at the position of the head of the front rotating part 1 into the pump body, when the process needs to be stopped, the pressing handle 501 is loosened manually, the pressing handle 501 returns to the original position under the elastic force of the spring, the tip 503 of the pressing handle 501 is drawn out from the incision of the silicone ring 502, the incision is closed, the communication relation between the branch pipe 504 and the drawing pump is cut off, the tissue fluid can not enter the pump body, namely, the process of drawing the tissue fluid is stopped, the drawing pump is in a normally open state when the drawing pump works, the drawing air by the drawing pump when not being pressed yet, and drawing the fluid in the channel after being pressed, it is required to explain that the invention sets the pressing handle 501 in an S-shaped avoiding structure (as, the structure can facilitate the operation of the product by the left hand and the right hand, so that the product is more flexible to use.

4. A function of controlling the steering of the front end rotating section 1. As shown in fig. 4, 5, 10 and 11, the front rotating part 1 directly enters the tissue incision for observing the pathological condition of the tissue, the front rotating part 1 has a slender structure, and if the front rotating part 1 is not limited, the front rotating part cannot control the direction after entering the tissue, and the position of the head of the front rotating part can not be ensured to be the position to be observed by medical staff, and for this purpose, a curved handwheel 6 is provided for controlling the direction of the front rotating part 1 to ensure the correct entering of the tissue to be observed. The bending hand wheel 6 is formed by controlling two pulling wires 601, the pulling wires 601 are packaged in the front end rotating part 1, when one pulling wire 601 is tightened and the other pulling wire 601 is loosened, the front end rotating part 1 deflects to the tightening side of the pulling wire 601, and reversely deflects to the other pulling wire 601. Based on this structural principle, the bending handwheel 6 further includes: and an adjusting handwheel 602 fixed in the operating section housing 4 and capable of rotating around its own center. The two traction wires 601 respectively bypass from two sides of the adjusting hand wheel 602 and are fixed on the adjusting hand wheel 602 and are close to the signal wire connecting part 7, when the bending hand wheel 6 rotates, the traction wires 601 at two sides can be driven to be tightened or loosened, so that the front end rotating part 1 is driven to rotate, in order to enable people to conveniently control the bending hand wheel 6, a wheel handle 603 is fixed on one side of the bending hand wheel 6, the wheel handle 603 is fixed on the bending hand wheel 6 and penetrates through the operating part shell 4, people can stir the wheel handle 603 with hands, so that the adjusting hand wheel 602 is driven to rotate, and therefore the rotating direction of the front end rotating part 1 is conveniently controlled; because the toughness of the material of the traction wire 601 and the bending angle of the front end rotating part 1 are limited, the rotating angle of the bending hand wheel 6 cannot be infinitely large, otherwise the traction wire 601 in a tightening state is broken due to the overlarge rotating angle of the bending hand wheel 6, therefore, a limit bulge 604 is fixed on the side wall of the bending hand wheel 6, a corresponding limit baffle 605 is arranged on one side of the limit bulge 604, the limit baffle 605 is fixed on the inner side wall of the operating part shell 4, a limit groove 606 is arranged on the limit baffle 605, the limit bulge 604 is positioned in the limit groove 606 of the limit baffle 605, when the bending hand wheel 6 rotates, the limit bulge 604 is driven to rotate, since the limit projection 604 can move only in the limit groove 606 of the limit stop 605, therefore, the rotation of the bending hand wheel 6 is limited, so that the rotation angle of the bending hand wheel 6 is limited, and the problem that the traction wire 601 is broken due to the fact that the rotation angle of the bending hand wheel 6 is too large is solved; in actual use, because the difference of product machining precision and front end rotating part 1 degree of deflection, need adjust the elasticity of haulage wire 601 after the product assembly is accomplished, so set up guiding mechanism 607 on crooked hand wheel 6 and be used for adjusting the elasticity degree of haulage wire 601 and thus make it satisfy the demands, guiding mechanism 607 includes: the adjusting mechanism 607 can be used for finely adjusting the traction wire 601 after the production of a product is finished, so that the tightness 601 of the traction wire is moderate, and the using effect of the product is improved; the above structure is the basic structure of the bending handwheel 6, the steering adjustment of the front end rotating part 1 can be realized, but in the actual use process, the traction wire 601 is slender, the front end rotating part 1 is scratched by long-term use, in order to avoid the phenomenon, the service life of the whole product is improved, a capillary tube fixing block 608 is arranged at the position of the traction wire 601 close to the front end rotating part 1, two alignment grooves 609 are arranged on the capillary tube fixing block 608, the two traction wires 601 pass through the two alignment grooves 609, a layer of capillary tube 610 is wrapped outside each traction wire 601, the capillary tube 610 extends into the front end rotating part 1 from the position of the capillary tube fixing block 608, the material of the capillary tube 610 is harder and more wear-resistant than that of the front end rotating part 1, the traction wire 601 is in direct contact with the capillary tube 610 in the process of tightening and loosening, the capillary tube 610 is not moved relative to the front end rotating, the traction wire 601 does not contact with the front end rotating part 1 in the action process, so that the traction wire 601 is prevented from scratching the front end rotating part 1; in addition, in practical use, a situation that the traction wire 601 is separated from the curved hand wheel 6 in the process that the curved hand wheel 6 rotates repeatedly can also occur, in order to avoid the situation, an anti-drop plate 611 is arranged at a position, close to the curved hand wheel 6, of the traction wire 601, two anti-drop grooves 612 are formed in the anti-drop plate 611, the two traction wires 601 penetrate through the two anti-drop grooves 612, a layer of anti-drop sleeve 613 wraps the outer portion of each traction wire 601, the anti-drop sleeve 613 extends from the position of the anti-drop plate 611 to the curved hand wheel 6 but is not in contact with the curved hand wheel, the inner wall of the anti-drop sleeve 613 is smooth so that the traction wire 601 can slide in the inner wall of the anti-drop sleeve 613, the outer wall of the anti-drop sleeve 613 is rough so that the traction wire 601 in the anti-.

In order to make the product more suitable for different work requirements and simplify the structure, a second different embodiment is provided, as shown in fig. 4, 10 and 11, for the test without extracting the interstitial fluid, the pressing and sucking mechanism 5 (including the shunt branch 504) in the above embodiment can be removed, the product structure is reduced, and the cost is reduced.

Based on the above technical solutions, a third different embodiment is provided, as shown in fig. 10-11, in case that the external instrument operation is not needed, the liquid stop valve 202 of the medical accessory channel 2 can be removed, and the drainage tube 201 is directly connected with the flushing mechanism, i.e. the function of the external instrument operation is removed, only the function of tissue flushing is kept, and the product structure can be reduced and the cost can be reduced.

The working principle of the invention is as follows:

the invention is connected with external apparatus through a channel 2 of diagnosis and treatment accessories, and is connected with a liquid pump through a pressing handle 501, firstly, the front end rotating part 1 enters the tissue from the incision of the tissue to be observed, in the process of extending, the inserting position of the front end rotating part 1 can be adjusted by a toggle wheel handle 603 (the front end rotating part 1 can only be swung in the vertical or left-right direction by a bending hand wheel 6, at the moment, the rotating part can be rotated to deflect the swinging direction of the front end rotating part 1) until reaching the tissue part to be observed, medical personnel can observe the tissue condition through an external display screen, if tissue liquid needs to be collected for assay analysis, the pressing handle 501 can be manually pressed to lead a shunt branch pipe 504 to be communicated with the liquid pump, the liquid pump is under negative pressure, the tissue liquid enters the liquid pump through the front end rotating part 1, a working channel 3, the shunt branch pipe 504 and the pressing handle 501 to, the extraction process needs to be stopped, and the pressing handle 501 only needs to be lifted; if the tissue part needs to be flushed for more clear observation, the liquid stop valve 202 of the diagnosis and treatment accessory channel 2 can be connected with a flushing mechanism, and the mechanism can send the normal saline to the part to be flushed for flushing operation through the working channel 3 and the front end rotating part 1; if need carry out some operations to the tissue site, can get into front end rotating part 1 by ending liquid valve 202 with the operation end of external apparatus through working channel 3, and then carry out some micro-operations, this product back that finishes using, take out the front end rotating part 1 clean, each external mechanism is detached to be collected and is put in order.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims

1. An endoscope structure, including insert the front end rotating part that the pathological change position is used for peeping the inside condition, be connected with external equipment and be used for the signal line connecting portion of fixed signal line, support the operation portion shell of other components, its characterized in that, the position that the front end rotating part is close to the operation portion shell is provided with the operation portion shell is connected and can follows its axle center pivoted rotating part, still includes: diagnose annex passageway, set up in one side of operation portion shell and through the pipeline with front end rotating part intercommunication for add the use of diagnosing the relevant apparatus of annex.

2. The endoscope structure according to claim 1, wherein a front rotating portion for connecting with the operating portion housing is disposed at a position of the front rotating portion close to the operating portion housing, a rotating slot symmetrically distributed is disposed at a position of one side of the rotating portion and in contact with an end of the front rotating portion, a connecting block corresponding to the rotating portion structure is disposed at a position of the operating portion housing close to the front rotating portion, positioning blocks symmetrically distributed are disposed at an inner side of the connecting block, the front rotating portion can rotate at an end of the operating portion housing by means of a clamping structure of the rotating portion and the connecting block, and a rotating angle range of the front rotating portion is determined by an angle range of the positioning blocks relative to the rotating slot.

3. The endoscope structure according to claim 1, wherein the signal wire connecting portion is made of a soft material, and the signal wire connecting portion is fastened to a tail portion of the operating portion housing and can rotate around a connecting portion as a shaft, so that a signal wire at a rear end is prevented from interfering with an operation.

4. An endoscope structure according to claim 1, wherein a working channel inlet is opened at one side of said operation portion housing, said working channel inlet intersects with an axis of said operation portion housing, said treatment accessory channel is inserted into said working channel inlet and is inclined with respect to said axis of said operation portion housing, said treatment accessory channel comprises: the drainage tube is fixed on the shell all the time, and the liquid stop valve is arranged outside the shell, connected with the drainage tube and detachable.

5. An endoscope construction according to claim 4 and wherein said drainage tube is hollow, a working channel is provided at a rear portion of said drainage tube, and said liquid stop valve is communicated with said front rotary portion through said working channel and adapted to draw out liquid at a designated position of said front rotary portion or supply external liquid to a designated position of said front rotary portion.

6. An endoscope structure according to claim 5, characterized in that a stepped snap ring for preventing the operating part shell from falling off is arranged in the middle of the drainage tube, a luer female head is arranged at the head of the drainage tube, the drainage tube and the liquid stop valve are screwed together through the luer female head, the liquid stop valve has three ports, one port is connected with the drainage tube, and the other two ports can be connected with or plugged by external operating equipment.

7. The endoscope structure according to claim 1, wherein said treatment attachment channel further comprises a branch flow pipe, said branch flow pipe is disposed at one side of said treatment attachment channel and is connected to the inside of said treatment attachment channel, and a part of the liquid in said front end rotating portion enters said branch flow pipe when flowing through the lumen of said treatment attachment channel.

8. An endoscope arrangement according to claim 7 and wherein said manifold is a medical plastics tube, said manifold being removably attachable to said medical accessory channel.

9. An endoscopic structure according to claim 1, further comprising: a pressing and sucking mechanism: the operating part is arranged on one side of the operating part shell, is communicated with the front end rotating part through a pipeline and is used for sucking tissue fluid; bending a hand wheel: and the front rotating part is arranged in the operating part shell and used for controlling the steering of the front rotating part.

10. An endoscope structure according to claim 8 or 9, wherein said pressing and sucking means is connected to the other end of said branch pipe, and a liquid pump is connected to the outside thereof, and the connection and disconnection between said branch pipe and said liquid pump is controlled by said pressing and sucking means.