CN116211231A

Movatterモバイル変換

Info

Publication number: CN116211231A
Application number: CN202211733431.XA
Authority: CN
Inventors: 吴斯炯
Original assignee: Wuxi Sanjie Medical Technology Co ltd
Current assignee: Wuxi Sanjie Medical Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-06

Abstract

The invention discloses a disposable section of an endoscope and the endoscope, wherein the disposable section comprises an outer tube and a handle, the outer tube is provided with an inner tube accommodating channel, a flushing channel, an integrated suction forceps channel and a water vapor channel, the front end of the inner tube accommodating channel is in transparent blocking sealing packaging, the inner tube accommodating channel is used for accommodating a repeatable use part integrated with a camera and a light source, the front ends of the other channels are through holes, the rear side of the water vapor channel is divided into a gas channel and a water channel, the front end of the outer tube is provided with a bendable section, a bendable snake bone is arranged in the bendable section, a steering control component is arranged on the handle, and the snake bone is provided with an upper traction wire, a lower traction wire, a left traction wire and a right traction wire which penetrate from the outer tube to the handle and are connected with the steering control component so as to realize the up-down left-right bending of the bendable section; the endoscope includes a disposable section, and a reusable portion. The invention sets up the expensive part alone, can be used circularly after disinfecting, the disposable section is disposable, avoid the cross infection effectively.

Description

Disposable section of endoscope and endoscope

Technical Field

The invention relates to the technical field of medical instruments, in particular to a disposable section of an endoscope and the endoscope.

Background

The colonoscope is used as an auxiliary means for early detection of digestive tract diseases, and is mainly applied to disease detection of colon polyps, adenoma and the like, and extraction of intestinal polyps, recovery of intestinal torsion and the like. Conventional colonoscopy structurally includes a flexible insertion tube, a functional control mechanism for guiding a bendable portion of the distal end of the insertion tube, a plurality of working channels, and a camera. The camera provides images of the interior of the alimentary canal, assists medical personnel in locating the distal end of the flexible tube, and transmits images of lesions that may be present to a display, assisting medical personnel in diagnosing and treating the disease. A surgical instrument channel in the endoscope through which the medical device can pass, and a flushing channel and a suction channel which assist in imaging. In colonoscopy, medical personnel first prepare the patient for bowel cleansing, and after certain scoring criteria are met, the patient is typically injected with an anesthetic, under anesthesia care, and the patient is subjected to colonoscopy in a sedated or anesthetized state.

Taking the currently widely used single person operated colonoscopes as an example. Basic colonoscopic actions include bending of the front end of the body, advancing the scope forward or back, inflating the intestinal lumen with suction, etc. Based on basic actions, the blind returning part can be reached safely by combining the complex actions of a skilled trembling mirror, a left-right turning mirror, a hooking mirror, a sliding mirror and the like. In addition, the subject may appropriately change posture, and the assistant presses the abdomen of the subject, and water is injected into the intestinal lumen in an appropriate amount to help increase the cecum arrival rate. After the focal field of view is obtained by the camera, the medical personnel will be demagnified within the optimal time for demagnifying the lens.

Currently, there are the following problems when using an endoscope: first, cross-contamination is unavoidable due to the method or structure of product use, as the flexible insertion tube is typically guided into the patient's body cavity during use, in some cases the endoscope used during the medical procedure of the previous patient is contaminated, improperly sterilized, or insufficiently sterilized, and then used by the next patient, in which case the health of the second patient is at risk of microbial transmission or disease. There are reports that hospital infection caused by improper disinfection and sterilization of endoscopes accounts for 0.8%. Secondly, the disinfection and sterilization of the product after use is complex (long time), resulting in huge workload and risk of insufficient disinfection. Because the endoscope is high in price, the purchase quantity of hospitals often cannot completely meet the clinical diagnosis and treatment requirements, the workload and the labor intensity of medical staff are increased, the clinical disinfection work is not in place, and great potential safety hazards exist. And secondly, the product has long disinfection period after being used, so that the use frequency of equipment is limited, and the requirement on the number of the equipment is increased. After the endoscope is used, if the endoscope needs to be sufficiently disinfected, complicated cleaning and disinfecting procedures are often needed, the time is long, the current medical requirements of patients cannot be met, and part of hospitals have to increase the budget for purchasing the endoscope. Finally, the product has a complex structure, is easy to damage in the use process, has high maintenance cost and causes high medical cost. In the process of surgical use or disinfection and cleaning, the endoscope is easy to damage, and particularly, expensive components of a camera and a light guide beam are easy to damage. The number of endoscopes purchased by part of hospitals is limited, the maintenance cost is increased undoubtedly due to the damage of instruments, the medical cost of patients is increased, even the patients are difficult to seek medical attention, and the illness state is prolonged.

At present, the problems of cross risk, complex disinfection procedure, long disinfection period, high maintenance cost and the like still cannot be fundamentally solved.

On the other hand, in order to perform an examination by using an endoscope, if necessary, it is necessary to fill and inhale the intestinal lumen and to fill the intestinal lumen with a proper amount of water, and the current endoscope has an unreasonable channel design. Although the current endoscope is provided with a flushing channel, a suction channel and a surgical instrument channel, the surgical instrument channel is needed for inflation, the flushing channel is needed for water injection, and the flushing channel is used for flushing mesenteric tissue fragments, ensuring clear vision during image acquisition and injecting water into an intestinal cavity, so that the complexity degree during operation is certainly increased, and the flushing channel cannot reasonably grasp the water quantity and force of various flushing.

On the other hand, the front end of the endoscope needs to realize the steering function so as to achieve the position to be inspected, the control mechanism generally has two types, namely electric control and mechanical control, the electric control needs to be realized by utilizing a micro motor to rotate, but the micro motor can increase the cost and is inconvenient to control, the mechanical control generally uses a spring to be matched with a rope to pull the rope to realize steering, but the mechanical control needs large volume space, the spring control accuracy needs to be improved, and the angle is not easy to control.

Disclosure of Invention

In order to solve the problems, the invention provides a disposable section of an endoscope and the endoscope, which are characterized in that expensive components are independently arranged and are not in direct contact with a patient, the endoscope can be recycled after disinfection, the rest parts are used as the disposable section of the endoscope for one-time use, the cost is reduced, cross infection is effectively avoided, the arrangement of each channel is reasonable, and the steering control is convenient.

According to one aspect of the present invention, there is provided a disposable section of an endoscope, comprising an outer tube, a handle provided at the rear end of the outer tube, an inner tube accommodating passage, a flushing passage, an integrated suction clamp passage and a water vapor passage being provided in the outer tube, the front end of the inner tube accommodating passage being a transparent blocking seal, the inner tube accommodating passage being adapted to accommodate a reusable part integrated with a camera and a light source, the front ends of the flushing passage, the integrated suction clamp passage and the water vapor passage being through holes, the rear side of the water vapor passage being divided into a gas passage and a water passage, the front end of the outer tube being provided with a bendable section in which a bendable snake bone is provided, the handle being provided with a steering control assembly, the snake bone being provided with an upper traction wire, a lower traction wire, a left traction wire and a right traction wire penetrating from the outer tube to the handle and being connected to the steering control assembly to effect up-down left-right bending of the bendable section. Therefore, the outer tube which is inserted into the patient body and the operating handle are arranged as the disposable section of the independent endoscope, and the disposable section is directly discarded after disposable use, so that the expensive and repeatable use part of the part which is not directly contacted with the patient is reserved, the use cost is greatly reduced, and the cross infection is effectively prevented; the outer tube is integrative multicavity way structure, and each passageway in the outer tube is reasonable, compares traditional endoscope and establishes the aqueous vapor passageway additional, and the air passageway is used for aerifing to patient's intestinal intracavity, and it need not to use other passageways to aerify, utilizes solitary water passageway to wash the front end of subassembly of making a video recording, ensures that image acquisition's field of vision is clear, but this water passageway independent control realizes washing, realizes special pipe special use, makes things convenient for the art person to operate fast in the art.

In some embodiments, the rear end of the air channel is connected with an air charging pipe, the rear end of the water channel is connected with a flushing pipe, the pipelines of the air charging pipe and the flushing pipe are connected with flushing valves for controlling the on-off of the air channel and the water channel, the air charging pipe and the flushing pipe are led out from the handle, the rear end of the air charging pipe is connected with an air pump, and the rear end of the flushing pipe is connected with a water tank. Therefore, the same flushing valve can simultaneously realize the opening and closing of the air channel and the water channel, thereby facilitating the rapid operation of an operator in the operation and simplifying the operation mode.

In some embodiments, a sleeve is arranged in the handle, the sleeve is provided with external threads, the repeatable use part is provided with an inner tube, a light source channel and a shooting channel are arranged in the inner tube, the rear end of the inner tube is sequentially connected with a guide sleeve, a hose part and a plug part, the inner tube can be contained in the inner tube containing channel of the outer tube, the hose part is led out from the handle, the guide sleeve is embedded in the sleeve, the hose part is sleeved with a screw cap capable of being assembled by the sleeve, and the screw cap is locked to enable the hose part to be connected with the sleeve. Thereby, a quick connection of the reusable part to the disposable part can be achieved.

In some embodiments, the flushing valve comprises a flushing valve body, a flushing valve rod, a flushing protective cap and a flushing key assembled at the top of the flushing valve rod, wherein the flushing protective cap is sleeved on the upper part of the flushing valve rod and is provided with a first spring to control the position of the flushing valve rod, the lower part of the flushing valve rod is arranged in the flushing valve body, a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring are sequentially arranged on the lower part of the flushing valve rod from bottom to top, and an annular groove is arranged on one side of the third sealing ring towards the fourth sealing ring so that the third sealing ring can be deformed by sudden rising of air pressure;

the flushing valve rod is internally provided with a vent hole, the flushing key is provided with a vent outlet communicated with the vent hole, the bottom of the vent hole is provided with a valve rod air hole, the valve rod air hole is positioned on the flushing valve rod between the second sealing ring and the third sealing ring, and the flushing valve body is provided with a water inlet, a water outlet, an air inlet and an air outlet;

when the flushing valve rod is not pressed, the air inlet is positioned on the flushing valve body between the second sealing ring and the third sealing ring, the air outlet is positioned on the flushing valve body between the third sealing ring and the fourth sealing ring, when the ventilation outlet hole is plugged, air enters the flushing valve body through the air inlet to deform the third sealing ring, the air outlet and the air inlet are communicated with the air channel to be opened, and when the ventilation outlet hole is released, the air is discharged through the air inlet, the valve rod air hole, the air vent and the ventilation outlet hole;

when the flushing valve rod is not pressed, the water inlet is positioned on the flushing valve body at the lower side of the sealing ring, and the water outlet is positioned on the flushing valve body between the first sealing ring and the second sealing ring, so that the water channel is closed;

after the flushing valve rod is pressed, the water inlet and the water outlet are both arranged between the first sealing ring and the second sealing ring, so that the water channel is opened, and the third sealing ring is extruded and deformed and clings to the flushing valve body, so that the air channel is closed.

Therefore, the operator covers the ventilation outlet hole by hand, the air pump provides an air source for the air inflation tube, the air source enters the flushing valve body through the air inlet, the air pressure in the flushing valve body rises suddenly, the sealing ring III deforms, a gap is formed between the sealing ring III and the valve body, the air outlet is communicated with the air inlet, the air channel is opened, and when the air channel is opened, the water channel is closed; if the ventilation outlet hole is uncovered, the air pump provides an air source for the air inflation tube, the air source enters the valve body through the air inlet, the air enters the valve rod air hole and the ventilation hole, and the air is discharged out of the valve body from the ventilation outlet hole. If the water channel is required to be opened, the flushing key is pressed, the flushing valve rod moves downwards relative to the flushing valve body, a water source enters the flushing valve body through the water inlet, the water inlet is communicated with the water outlet, the water source enters the water channel from the water outlet, the water channel is opened, at the moment, the sealing ring enters a narrower space downwards in three directions, the supporting force of the sealing ring III is increased and higher than the pressure of the air source, the air channel is closed, and the air cannot be output from the air outlet. The flushing valve realizes independent control of inflation and camera flushing, and the inflation and the camera flushing are not carried out simultaneously, so that the operation difficulty is simplified, and the safety of the operation is improved.

In some embodiments, the rear end of the irrigation channel is connected with an irrigation tube, which is led out from the handle, and the rear end of the irrigation tube is connected with a peristaltic pump for providing a water source. From this, peristaltic pump provides the water source to the wash tube in, and water gets into the wash channel through the wash tube, flows from the front end of outer tube, mainly washes the tissue fragment on the mesentery, and this wash channel realizes special pipe with the water channel of aqueous vapor passageway is special, avoids adjusting the water source size complicatly, effectively improves the security.

In some embodiments, the suction forceps are connected with a suction tube at the rear end of the integrated channel, a suction valve is arranged on the suction tube, and a bifurcation tube is arranged on the suction tube at the front part of the suction valve, and can be used for connecting a biopsy valve or can be used for passing surgical instruments. Therefore, the suction valve can be opened in the operation, the tissue fragments are sucked through the suction forceps integrated channel and then collected at the biopsy valve, and the suction valve can also be used for exhausting in the intestinal cavity when being opened; when other surgical instruments are needed, the surgical instruments enter the integrated channel of the suction forceps and extend out of the front end of the outer tube to perform surgical operation.

In some embodiments, the steering control assembly comprises a knob, a first poking wheel, a second poking wheel and a wire wheel, wherein the center of the first poking wheel is connected with an inner screw rod, the bottom of the inner screw rod is provided with a first bevel gear which is horizontally arranged, the first bevel gear is meshed with a second bevel gear which is vertically arranged, the tail ends of a left traction wire and a right traction wire are connected with each other and are assembled in the second bevel gear, the second poking wheel is connected with an outer screw rod, the inner screw rod is connected with the bottom of the outer screw rod through threads, the wire wheel is connected with the tail ends of an upper traction wire and a lower traction wire and is assembled in the wire wheel, the inner screw rod of the first poking wheel extends to the upper side of the first poking wheel, the knob is connected with the inner screw rod through threads, and a silica gel pad is arranged between the knob and the first poking wheel, between the second poking wheel and the handle. Thus, the first rotary thumb wheel rotates, the inner screw rod rotates, the first bevel wheel is meshed with the second bevel wheel, and the second bevel wheel drives the left traction wire and the right traction wire to enable the bendable section to bend leftwards or rightwards; rotating the shifting wheel II, and pulling the upper traction wire and the lower traction wire by the wire wheel to enable the bendable section to be bent upwards or downwards; the distance between the knob and the first shifting wheel can be reduced by screwing the knob, the first shifting wheel is extruded to lock steering, and a plurality of silica gel mats are arranged to play a role in fine adjustment of bending guide of the bendable section.

In some embodiments, the suction clip integral channel is located directly above the inner tube receiving channel, and the moisture channel and the flush channel are symmetrically disposed with respect to the suction clip integral channel, the moisture channel being located obliquely above the inner tube receiving channel. Therefore, the positions of the channels are distributed reasonably, the operation in operation is convenient, the positions of the water-gas channels are convenient for flushing the front end of the camera shooting assembly, and the image acquisition is ensured to be clear.

According to another aspect of the present invention, there is provided an endoscope including the above-mentioned disposable section of the endoscope, and a reusable portion including an inner tube, a light source module and a camera module, a light source channel and a camera channel being provided in the inner tube, a guide sleeve, a hose portion and a plug portion being sequentially connected to a rear end of the inner tube, the inner tube being receivable in the inner tube receiving channel of the outer tube and the hose portion being led out from a handle, the light source module and the camera module being provided in the light source channel and the camera channel, the handle being detachably connected to the hose portion. Therefore, compared with a disposable endoscope which is used as a consumable and cannot recover the camera shooting assembly after being used, the endoscope is provided with the inner tube accommodating channel in the outer tube to accommodate the inner tube, the camera shooting assembly and the light source assembly are integrated in the inner tube, the inner tube is directly sleeved in the outer tube during operation and is not in direct contact with the patient, the inner tube can be directly detached from the outer tube after operation, the parts of the expensive parts such as the inner tube integrated with the camera shooting assembly and the light source assembly can be reused after disinfection, and the rest parts are disposable parts and are used for disposal and direct disposal, so that the disinfection difficulty is reduced, the disinfection period is shortened, the use cost is greatly reduced, and the parts are directly discarded after being used with the direct contact part of the patient, thereby effectively preventing cross infection and being beneficial to improving the medical efficiency.

Compared with the prior art, the invention has the beneficial effects that: the endoscope provided by the invention adopts a mode that a reusable part is combined with a disposable part for one time to form a complete endoscope, expensive parts such as a camera shooting assembly, a light source assembly and the like are independently integrated into an inner tube, the inner tube is sleeved in an outer tube with an integrated multi-cavity channel, the inner tube is not directly contacted with the body of a patient in operation, the inner tube can be directly detached from the outer tube after operation, the expensive parts such as the inner tube integrated with the camera shooting assembly and the light source assembly can be used repeatedly after disinfection, the rest part is the disposable part, the disposable part for one time is directly discarded after use, the disinfection difficulty is greatly reduced, the disinfection period is shortened, the cost is saved, the part contacted with the patient is not reused, and cross infection is effectively prevented; the outer tube of abandoning the section is the multi-chamber structure of integral type, rational arrangement inner tube holding passageway, flushing channel, suction pincers integrative passageway, aqueous vapor passageway in the outer tube, and each passageway realizes special tub special use, simplifies the operation degree of difficulty, improves the security of operation greatly to rationally set up the steering control subassembly that the control bendable section was turned to, turn to the simple operation, the precision improves.

Drawings

FIG. 1 is a schematic view of an embodiment of an endoscope of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a flush channel and flush tube;

FIG. 4 is a schematic view of an integrated suction clip channel and suction tube;

FIG. 5 is a schematic illustration of the connection of the water channel, the gas channel and the flush valve;

FIG. 6 is a schematic view of a reusable part;

FIG. 7 is a schematic view of a camera passageway within an inner tube;

FIG. 8 is a schematic view of the structure of the handle;

FIG. 9 is a schematic perspective view of a steering control assembly;

FIG. 10 is a front view of the steering control assembly;

FIG. 11 is a schematic view of a suction valve, without a suction valve body;

FIG. 12 is a perspective view of the flush valve without the flush valve body;

FIG. 13 is an internal schematic view of FIG. 12;

FIG. 14 is a schematic view of the structure of the flush valve;

fig. 15 is a schematic view of the distribution of channels in the front face of the disposable section.

Detailed Description

The invention is further described below in connection with the following detailed description.

As shown in fig. 1, 2 and 15, a disposable section of an endoscope according to an embodiment of the present invention is a disposable part that is used as a disposal after use. The disposable section includes anouter tube 200 and ahandle 300 attached to the rear end of theouter tube 200. Theouter tube 200 is of an integrated multi-channel structure, and an innertube accommodating channel 201, a flushingchannel 202, an integratedsuction forceps channel 203 and awater vapor channel 204 are arranged in theouter tube 200. The front end of the innertube accommodating channel 201 is a transparent sealing seal, so that the image acquisition of the endoscope cannot be affected, and the innertube accommodating channel 201 is used for accommodating a repeatable use part integrated with a camera and a light source. The front ends of the flushingchannel 202, the suction clamp integratedchannel 203 and thewater vapor channel 204 at the front end face of theouter tube 200 are through holes, and the rear side of thewater vapor channel 204 is divided into agas channel 2041 and awater channel 2042. The front end of theouter tube 200 has abendable section 205 and thehandle 300 has asteering control assembly 70 thereon that controls the steering of thebendable section 205. Thebendable section 205 has abendable snake bone 206 disposed therein, thesnake bone 206 being formed by a combination of snake bone loops, thesnake bone 206 being externally enveloped (not shown) for insertion into a patient. Thesnake bone 206 is provided with anupper traction wire 71, alower traction wire 72, aleft traction wire 73 and aright traction wire 74 penetrating from theouter tube 200 to thehandle 300 and connected with thesteering control assembly 70 to achieve up-down and left-right bending of thebendable section 205. The four traction wires are controlled by thesteering control assembly 70, so that thebendable section 205 at the front end of theouter tube 200 is steered up, down, left and right, and the steering requirement is met.

The present invention provides theouter tube 200, which is introduced into the patient, and thehandle 300, which is operated, as a disposable section of the independent endoscope, which is directly discarded after a single use, retains the expensive reusable parts of the parts that are not in direct contact with the patient, greatly reduces the use cost, and effectively prevents cross infection. Theouter tube 200 is of an integrated multi-cavity structure, all channels in theouter tube 200 are reasonable, compared with a traditional endoscope, thewater gas channel 204 is additionally arranged, thegas channel 2041 is used for inflating the intestinal cavity of a patient, other channels are not needed for inflating, the front end of a camera can be flushed by utilizing theindependent water channel 2042, the clear view of image acquisition is ensured, the flushing can be realized by the independent control of thewater channel 2042, special use of the special tube is realized, and the rapid operation of an operator in an operation is facilitated.

The camera part and the light source part are expensive parts, and are designed into the reusable part, and the reusable part is matched with the disposable part provided by the application, so that the reusable part is not directly contacted with a patient, the disinfection difficulty is reduced, the disinfection period is shortened, and the cost is reduced.

As shown in fig. 6 and 7, the reusable part includes aninner tube 101, and twolight source channels 11 and oneimage capturing channel 12 are provided in theinner tube 101, where the twolight source channels 11 are symmetrically arranged with respect to theimage capturing channel 12, and the two sides of theimage capturing channel 12 are provided with light sources to ensure that the view of the front end of theimage capturing component 120 is clear. The rear end of theinner tube 101 is connected with aguide sleeve 102, ahose portion 103 and aplug portion 104 in order. Thelight source module 110 is arranged in thelight source channel 11, thecamera module 120 is arranged in thecamera channel 12, theplug part 104 is provided with alight source interface 1041 and acamera interface 1042, and thelight source module 110 and thecamera module 120 are respectively in butt joint with thelight source interface 1041 and thecamera interface 1042. Thecamera assembly 120 and thelight source assembly 110 are implemented using prior art techniques. Thecamera assembly 120 includes acamera 121, anelectrical connection line 122, a CCD image sensor (not shown) and an image processor (not shown), thecamera 121 is located at an end of thecamera path 12, and is connected to acamera interface 1042 through theelectrical connection line 122 and the CCD image sensor, and thecamera interface 1042 is used to connect a graphic processing device having the image processor. Thelight source assembly 110 includes a fiber bundle disposed in thelight source channel 11, and a light guide lens (not shown), the fiber bundle being electrically connected to thelight source interface 1041, and thelight source interface 1041 being used to externally connect to a light source device.

As shown in fig. 6 and 8, theinner tube 101 is inserted into the innertube accommodating channel 201 from thehandle 300, thehandle 300 is provided with asleeve 301 matched with theguide sleeve 102, theguide sleeve 102 is assembled in thesleeve 301 of thehandle 300, thehose 103 is led out from thehandle 300, the tail end of thesleeve 301 is provided with external threads, the front end of thehose 103 is in a step shape, thehose 103 is sleeved with ascrew cap 302, thescrew cap 302 is provided with internal threads, after theguide sleeve 102 is assembled with thesleeve 301, thescrew cap 302 is assembled, thescrew cap 302 presses thesleeve 301 to be locked with thehose 103, so that thescrew cap 302 connects thehose 103 with thesleeve 301, and the reusable part and the disposable part are integrally connected.

As shown in fig. 5, thegas passage 2041 is located above thewater passage 2042, and the front ends of thegas passage 2041 and thewater passage 2042 merge into awater gas passage 204, thewater gas passage 204 extending to the front end face of theouter tube 200. The rear end of theair channel 2041 is connected with an air charging pipe 41, the rear end of thewater channel 2042 is connected with a flushingpipe 42, the pipelines of the air charging pipe 41 and the flushingpipe 42 are connected with a flushingvalve 40, and the flushingvalve 40 is used for controlling the on-off of theair channel 2041 and thewater channel 2042. The air charging tube 41 and the flushingtube 42 are led out from thehandle 300, the rear end of the air charging tube 41 is connected with anair pump 411, theair pump 411 is used for providing an air source, and the rear end of the flushingtube 42 is connected with a water tank (not shown) and is used for providing a water source.

As shown in fig. 12 to 14, theflush valve 40 specifically includes aflush valve body 401, aflush valve stem 402, aflush cap 403, and aflush button 404 mounted on top of theflush valve stem 402, theflush valve body 401 being fixed to thehandle 300. Theflushing protection cap 403 is sleeved outside the upper portion of the flushingvalve rod 402, afirst spring 405 is installed outside the upper portion of the flushingvalve rod 402, two ends of thefirst spring 405 respectively abut against aflushing button 404 and aspring seat 406 in theflushing protection cap 403, and the lower portion of the flushingvalve rod 402 is arranged in theflushing valve body 401. The position of theflush valve stem 402 is controlled by pressing theflush button 404, moving theflush button 404 downward relative to theflush valve body 401, and resetting theflush valve stem 402. The lower part of the flushingvalve rod 402 is sequentially provided with afirst sealing ring 4021, asecond sealing ring 4022, athird sealing ring 4023 and afourth sealing ring 4024 from bottom to top, and the maximum outer diameter of thefirst sealing ring 4021, thesecond sealing ring 4022, thethird sealing ring 4023 and thefourth sealing ring 4024 in a natural state presents an increasing structure. Anannular groove 40231 is arranged on one side of thethird seal ring 4023, facing thefourth seal ring 4024, and theannular groove 40231 can enable thethird seal ring 4023 to be deformed by air pressure sudden rising, so that the maximum outer diameter of thethird seal ring 4023 is reduced, and a gap through which air can pass is formed between thethird seal ring 4023 and the flushingvalve body 401.

Theflush valve stem 402 has avertical vent 4025 in its center and theflush button 404 has avent hole 4041, which venthole 4041 communicates with thevent 4025. The flushingvalve rod 402 is provided with a horizontal valverod air hole 4026, the valverod air hole 4026 is positioned at the bottom of theair hole 4025, and the valverod air hole 4026 is positioned on the flushingvalve rod 402 between thesecond sealing ring 4022 and thethird sealing ring 4023. The flushingvalve body 401 is provided with awater inlet 4013, awater outlet 4014, anair inlet 4015 and anair outlet 4016, theair inlet 4015 and theair outlet 4016 are communicated with the inflation tube 41, and thewater inlet 4013 and thewater outlet 4014 are communicated with the flushingtube 42. The flushingvalve body 401 specifically includes amain valve body 4011 and asecondary valve body 4012, themain valve body 4011 is connected with the upper portion of thesecondary valve body 4012, and the inner diameters of themain valve body 4011 and thesecondary valve body 4012 are in a structure with a wide upper portion and a narrow lower portion in cooperation with each sealing ring on the valve rod.

The positions of thewater inlet 4013, thewater outlet 4014, theair inlet 4015 and theair outlet 4016 are specifically described in conjunction with the position of theflush valve stem 402. When the flushingvalve rod 402 is not pressed, theair inlet 4015 is positioned on theflushing valve body 401 between thesecond sealing ring 4022 and thethird sealing ring 4023, theair outlet 4016 is positioned on theflushing valve body 401 between thethird sealing ring 4023 and thefourth sealing ring 4024, and when theventilation outlet 4041 is plugged, air enters the flushingvalve body 401 through theair inlet 4015 to deform thethird sealing ring 4023, so that theair outlet 4016 and theair inlet 4015 are communicated with theventilation channel 2041 to be opened. When thevent hole 4041 is released without shielding, the gas is discharged through thegas inlet 4015, the valve stemgas hole 4026, thevent hole 4025, and thevent hole 4041, and thegas passage 2041 is closed.

When the flushingvalve rod 402 is not pressed, thewater inlet 4013 is positioned on theflushing valve body 401 below thefirst seal ring 4021, and thewater outlet 4014 is positioned on theflushing valve body 401 between thefirst seal ring 4021 and thesecond seal ring 4022, so that thewater channel 2042 is closed. After theflushing valve rod 402 is pressed, thewater inlet 4013 and thewater outlet 4014 are both arranged between thefirst sealing ring 4021 and thesecond sealing ring 4022, so that thewater channel 2042 is opened, at the moment, thethird sealing ring 4023 falls into thesecondary valve body 4012, and thethird sealing ring 4023 is extruded and deformed and clings to theflushing valve body 401, so that theair channel 2041 is closed.

Therefore, when the operator covers theventilation outlet hole 4041 with his hand, theair pump 411 provides an air source into the air tube 41, the air source enters the flushingvalve body 401 through theair inlet 4015, the air pressure in theflushing valve body 401 rises suddenly, the sealingring III 4023 deforms, a gap is formed between the sealingring III 4023 and the valve body, theair outlet 4016 is communicated with theair inlet 4015, theair channel 2041 is opened, and thewater channel 2042 is closed when theair channel 2041 is opened. If thevent hole 4041 is uncovered, theair pump 411 provides an air source into the air tube 41, the air source enters the valve body through theair inlet 4015, the air enters the valverod air hole 4026 and theair vent hole 4025, and the air is discharged from thevent hole 4041 to flush thevalve body 401. If thewater channel 2042 is required to be opened, theflushing button 404 is pressed, the flushingvalve rod 402 moves downwards relative to theflushing valve body 401, a water source enters the flushingvalve body 401 through thewater inlet 4013, thewater inlet 4013 is communicated with thewater outlet 4014, the water source enters thewater channel 2042 from thewater outlet 4014, thewater channel 2042 is opened, at the moment, the sealing ring III 4023 downwards enters a narrower space, the supporting force of the sealingring III 4023 is increased and is higher than the pressure of the air source, theair channel 2041 is closed, and the air cannot be output from theair outlet 4016. The endoscope is provided with aseparate air channel 2041 for inflating the intestinal cavity of a patient, other channels are not needed for inflation, the front end of thecamera assembly 120 can be flushed by utilizing theseparate water channel 2042, the clear view of image acquisition is ensured, and thewater channel 2042 can be independently controlled to realize flushing. Thesame flushing valve 40 can realize independent control of inflation and flushing of thecamera 121 at the same time, and the inflation and the flushing of thecamera 121 are not performed simultaneously, so that the rapid operation of an operator in the operation is facilitated, the operation mode is simplified, and the safety of the operation is improved.

As shown in FIG. 5, a one-way valve 412 is mounted on the inflation tube 41 on the front side of theirrigation valve 40 so that a pressure above atmospheric pressure is created after the surgical site is inflated with gas, the one-way valve 412 preventing the back flow of gas from the surgical site back to theirrigation valve 40 behind the inflation tube 41. If the exhaust gas is required, the exhaust gas can be sucked through the suction forcepsintegral passage 203.

As shown in fig. 3, the rear end of the flushingchannel 202 is connected with a flushing pipe 5, the flushing pipe 5 is led out from thehandle 300, and the rear end of the flushing pipe 5 is connected with aperistaltic pump 51 for providing water source.Peristaltic pump 51 provides a source of water into irrigation tube 5, which entersirrigation channel 202 through irrigation tube 5 and exits the forward end ofouter tube 200, primarily irrigation of tissue fragments on the mesentery. The flushingchannel 202 and thewater channel 2042 of the water-gas channel 204 are special for special pipes, so that the complex adjustment of the water source size is avoided, and the safety is effectively improved.

As shown in fig. 4, the suction tube 6 is connected to the rear end of the suction forceps integratedchannel 203, the suction tube 6 is provided with asuction valve 60, the suction tube 6 in front of thesuction valve 60 is provided with abifurcation tube 61, and thebifurcation tube 61 can be used for connecting a biopsy valve or for passing a surgical instrument. Thus,suction valve 60 may be opened during surgery, suction tissue fragments may be introduced through suction forcepsintegral channel 203 and then collected at the biopsy valve, andsuction valve 60 may also be used for intra-intestinal evacuation when opened. When other surgical instruments are required to be used, the surgical instruments enter the suction forcepsintegral channel 203 and protrude from the front end of theouter tube 200 to perform a surgical operation.

As shown in fig. 4 and 11, thesuction valve 60 specifically includes asuction valve body 601, asuction valve stem 602, asuction cap 603, and asuction button 604 mounted on the top of thesuction valve stem 602, and thesuction valve body 601 is attached to thehandle 300. Thesuction cap 603 is sleeved outside the upper portion of thesuction valve rod 602, asecond spring 605 is mounted outside the upper portion of thesuction valve rod 602, two ends of thesecond spring 605 respectively abut against thesuction key 604 and a spring seat 606 in thesuction cap 603, and the lower portion of thesuction valve rod 602 is arranged in thesuction valve body 601. Thesuction button 604 is pressed, the position of the suction valve stem 602 moves downward relative to thesuction valve body 601, thesuction button 604 is released, and thesuction valve stem 602 is reset, so that the position of the suction valve stem 602 can be controlled. The lower part of thesuction valve rod 602 is provided with avalve rod hole 6021 which is vertical from bottom to top, thesuction valve rod 602 is provided with a valverod side hole 6022 communicated with thevalve rod hole 6021, and the valverod side hole 6022 is horizontal and penetrates thesuction valve rod 602. Twosymmetrical suction ports 6011 are provided in the wall of thesuction valve body 601, and when thesuction valve stem 602 is pressed, thesuction ports 6011 communicate with the valve stem side holes 6022. Thus, when thesuction button 604 is pressed, the suction valve stem 602 moves downward with respect to thesuction valve body 601, thestem side hole 6022 communicates with thesuction ports 6011 formed in thesuction valve body 601, the suction pipes 6 on both sides of thesuction valve 60 communicate with each other, and the suction passage is opened to apply suction to the surgical part.

As shown in fig. 15, in theouter tube 200, themoisture passage 204 and theflushing passage 202 are symmetrically arranged with respect to the suction clamp integratedpassage 203. The suction forceps integratedchannel 203 is positioned right above the innertube accommodating channel 201, the water-gas channel 204 is positioned obliquely above the innertube accommodating channel 201, the position of the water-gas channel 204 is also convenient for flushing the front end of thecamera shooting assembly 120, the image acquisition is ensured to be clear, the position distribution of each channel is reasonable, and the operation in operation is convenient.

As shown in fig. 9 and 10, thesteering control assembly 70 specifically includes aknob 701, afirst thumbwheel 702, asecond thumbwheel 703, and awire wheel 704. The center of the thumb wheel I702 is connected with aninner screw 7021, the surface of theinner screw 7021 is provided with an external thread, the bottom of theinner screw 7021 is provided with a bevel gear I705 which is horizontally arranged, the bevel gear I705 is meshed with a bevel gear II 706 which is vertically arranged, the tail ends of theleft traction wire 73 and theright traction wire 74 are connected and fixedly assembled on the bevel gear II 706, the thumb wheel II 703 is connected with anouter screw 7031, theouter screw 7031 is provided with an internal thread, theinner screw 7021 is connected in theouter screw 7031 through a thread, thewire wheel 704 is connected to the bottom of theouter screw 7031, and the tail ends of theupper traction wire 71 and thelower traction wire 72 are connected and fixedly assembled on thewire wheel 704. Theinner screw 7021 of the thumb wheel one 702 extends to the upper side of the thumb wheel one 702, and theknob 701 is connected with theinner screw 7021 through threads, andsilica gel pads 707 are arranged between theknob 701 and the thumb wheel one 702, between the thumb wheel one 702 and the thumb wheel two 703, and between the thumb wheel two 703 and thehandle 300.

When thefirst thumb wheel 702 is rotated, theinner screw 7021 rotates, thefirst bevel wheel 705 meshes with thesecond bevel wheel 706, and thesecond bevel wheel 706 pulls the left and right pull

wires

73, 74 to bend thebendable section 205 to the left or right. When thesecond dial 703 is turned, thewire wheel 704 pulls the upper and

lower pull wires

71 and 72 to bend thebendable section 205 upward or downward. By tightening theknob 701, the distance from thefirst thumb wheel 702 can be reduced, and thefirst thumb wheel 702 can be pressed to lock the steering. A plurality ofsilica gel pads 707 are provided to play a role in fine tuning the bending direction of thebendable section 205.

As shown in fig. 1, 6 and 15, an endoscope according to another embodiment of the present invention includes a disposable section of the endoscope described above, and a reusable section, the reusable section and the disposable section being detachably connected, the reusable section being sterilized for reuse after use, and the remainder being disposable, the disposable section being disposed of after use.

The reusable part integrates thelight source module 110 and thecamera module 120 through a separateinner tube 101. Theinner tube 101 is inserted into theouter tube 200 through thesleeve 301 on thehandle 300, so that theinner tube 101 is accommodated in the innertube accommodating channel 201 of theouter tube 200, and thehose part 103 of the reusable part is led out from thehandle 300, and thescrew cap 302 is locked, so that the reusable part and the disposable part are connected into a whole to form the complete endoscope.

Compared with a disposable endoscope, the disposable endoscope is used as a consumable material, thecamera shooting assembly 120 cannot be recycled after use, a complete endoscope is formed by combining a reusable part with a disposable part, thecamera shooting assembly 120, thelight source assembly 110 and other expensive parts are independently integrated into theinner tube 101, theinner tube 101 is sleeved in theouter tube 200 with an integrated multi-cavity channel, theinner tube 101 is not directly contacted with the body of a patient in operation, theinner tube 101 can be directly detached from theouter tube 200 after operation, the expensive parts such as theinner tube 101 integrating thecamera shooting assembly 120 and thelight source assembly 110 can be used repeatedly after disinfection, the rest parts such as theouter tube 200 and thehandle 300 are disposable parts, the disposable parts are directly discarded after use, the disinfection difficulty is greatly reduced, the disinfection period is shortened, the cost is saved, the parts contacted with the patient are not repeatedly used, and cross infection is effectively prevented. Theouter tube 200 is of an integrated multi-channel structure, an innertube accommodating channel 201, a flushingchannel 202, an attracting clamp integratedchannel 203 and a water-gas channel 204 are reasonably arranged in theouter tube 200, and the channels are special for special tubes, so that the operation difficulty is simplified, and the safety of an operation is greatly improved. Thesteering control assembly 70 for controlling the steering of thebendable section 205 is reasonably arranged, the steering operation is convenient, and the accuracy is improved.

While only certain embodiments of the present invention have been described, it will be apparent to those skilled in the art that other modifications and improvements can be made without departing from the inventive concept of the present invention.

Claims

1. The disposable section of the endoscope comprises an outer tube and a handle arranged at the rear end of the outer tube, and is characterized in that an inner tube accommodating channel, a flushing channel, an attracting clamp integrated channel and a water vapor channel are arranged in the outer tube, the front end of the inner tube accommodating channel is in transparent blocking sealing packaging, the inner tube accommodating channel is used for accommodating a repeatable use part integrated with a camera and a light source, the front ends of the flushing channel, the attracting clamp integrated channel and the water vapor channel are through holes, the rear side of the water vapor channel is divided into a gas channel and a water channel, the front end of the outer tube is provided with a bendable section, a bendable snake bone is arranged in the bendable section, a steering control assembly is arranged on the handle, and an upper traction wire, a lower traction wire, a left traction wire and a right traction wire penetrate into the handle from the outer tube and are connected with the steering control assembly to realize up-down left-right bending of the bendable section.

2. The disposable section of an endoscope according to claim 1, wherein the rear end of the air channel is connected with an air inflation tube, the rear end of the water channel is connected with a flushing tube, the pipelines of the air inflation tube and the flushing tube are connected with a flushing valve for controlling the on-off of the air channel and the water channel, the air inflation tube and the flushing tube are led out from the handle, the rear end of the air inflation tube is connected with an air pump, and the rear end of the flushing tube is connected with a water tank.

3. The disposable section of an endoscope according to claim 2, wherein a sleeve is provided in the handle, the sleeve is provided with an external thread, the reusable part is provided with an inner tube, a light source channel and a camera channel are provided in the inner tube, a guide sleeve, a hose portion and a plug portion are sequentially connected to the rear end of the inner tube, the inner tube is accommodated in the inner tube accommodating channel of the outer tube, the hose portion is led out from the handle, the guide sleeve is embedded in the sleeve, the hose portion is sleeved with a screw cap capable of being assembled with the sleeve, and the screw cap is locked to connect the hose portion with the sleeve.

4. The disposable section of an endoscope according to claim 3, wherein the flush valve comprises a flush valve body, a flush valve stem, a flush cap, and a flush button mounted on the top of the flush valve stem, the flush cap is sleeved on the upper part of the flush valve stem and is provided with a first spring to control the position of the flush valve stem, the lower part of the flush valve stem is arranged in the flush valve body, the lower part of the flush valve stem is sequentially provided with a first seal ring, a second seal ring, a third seal ring and a fourth seal ring from bottom to top, and one side of the third seal ring facing the fourth seal ring is provided with an annular groove to enable the third seal ring to be deformed by sudden rising of air pressure;

when the flushing valve rod is not pressed, the air inlet is positioned on the flushing valve body between the second sealing ring and the third sealing ring, the air outlet is positioned on the flushing valve body between the third sealing ring and the fourth sealing ring, when the ventilation outlet hole is blocked, air enters the flushing valve body through the air inlet to deform the third sealing ring, the air outlet and the air inlet are communicated with the air channel to be opened, and when the ventilation outlet hole is released, the air is discharged through the air inlet, the valve rod air hole, the ventilation hole and the ventilation outlet hole;

after the flushing valve rod is pressed, the water inlet and the water outlet are arranged between the first sealing ring and the second sealing ring, so that the water channel is opened, and the third sealing ring is extruded and deformed and clings to the flushing valve body, so that the air channel is closed.

5. The disposable section of an endoscope of claim 4, wherein the rear end of the irrigation channel is connected to an irrigation tube, the irrigation tube leading from the handle, the rear end of the irrigation tube being connected to a peristaltic pump that provides a source of water.

6. The disposable section of an endoscope according to claim 5, wherein a suction tube is connected to the rear end of the suction forceps integrated channel, a suction valve is provided on the suction tube, and a bifurcation tube is provided on the suction tube in front of the suction valve, and the bifurcation tube is used for connecting a biopsy valve or for passing a surgical instrument.

7. The disposable section of an endoscope according to claim 6, wherein the suction valve comprises a suction valve body, a suction valve stem, a suction cap, and a suction button fitted to the top of the suction valve stem, the suction cap is fitted to the upper portion of the suction valve stem and is provided with a second spring for controlling the position of the suction valve stem, the lower portion of the suction valve stem is provided in the suction valve body, a valve stem hole is provided in the lower portion of the suction valve stem, the suction valve stem is provided with a valve stem side hole communicating with the valve stem hole, the suction valve body is provided with a symmetrical suction port communicating with the valve stem side hole when the suction valve stem is pressed.

8. The disposable section of an endoscope according to claim 1 or 7, wherein the steering control assembly comprises a knob, a first thumb wheel, a second thumb wheel and a wire wheel, wherein the center of the first thumb wheel is connected with an inner screw, the bottom of the inner screw is provided with a horizontally arranged first bevel gear, the first bevel gear is meshed with a vertically arranged second bevel gear, the tail ends of the left traction wire and the right traction wire are connected with each other and are assembled with the second bevel gear, the second thumb wheel is connected with an outer screw, the inner screw is connected in the outer screw through threads, the wire wheel is connected to the bottom of the outer screw, the tail ends of the upper traction wire and the lower traction wire are connected with each other and are assembled with the wire wheel, the inner screw of the first thumb wheel extends to the upper side of the first thumb wheel, the knob is connected with the inner screw through threads, and silica gel pads are arranged between the knob and the first thumb wheel, between the first thumb wheel and the second thumb wheel and the handle.

9. A disposable section of an endoscope according to claim 3 and wherein said suction clip integral channel is located directly above said inner tube receiving channel, said moisture channel and said flush channel are symmetrically disposed relative to said suction clip integral channel, said moisture channel being located obliquely above said inner tube receiving channel.

10. An endoscope, characterized by comprising a disposable section of the endoscope according to any one of claims 1 to 9 and a reusable part, wherein the reusable part comprises an inner tube, a light source assembly and a camera assembly, a light source channel and a camera channel are arranged in the inner tube, a guide sleeve, a hose portion and an insertion portion are sequentially connected to the rear end of the inner tube, the inner tube can be accommodated in an inner tube accommodating channel of the outer tube, the hose portion is led out from a handle, the light source assembly and the camera assembly are arranged in the light source channel and the camera channel, and the handle is detachably connected with the hose portion.