阅读说明：本技术 密封且压力可控的猪胃固定器 (Sealed and pressure-controllable pig stomach fixing device ) 是由 张晓梅 沈蕾 范韬 潘飞 孟科 于 2021-07-20 设计创作，主要内容包括：本发明公开了一种密封且压力可控的猪胃固定器,包括容器本体,容器本体内设置有用于固定离体猪胃的固定机构,固定机构包括用于固定离体猪胃的食道段的第一固定组件以及用于固定十二指肠段的第二固定组件,容器本体内设置有用于容纳离体猪胃的密封腔,还包括用于向密封腔输入压力的第一压力输入件以及用于向离体猪胃输入压力的第二压力输入件。本发明提供的密封且压力可控的猪胃固定器,通过第一压力输入件能够对密封腔内的压力进行调节和控制,通过第二压力输入件能够对离体猪胃内的压力进行调节可控制,如此使得离体猪胃能够模拟出不同的环境供操作者进行模型训练,有效提升消化内镜师操作训练模型取得的效果。(The invention discloses a sealed and pressure-controllable pig stomach fixator which comprises a container body, wherein a fixing mechanism for fixing an in-vitro pig stomach is arranged in the container body, the fixing mechanism comprises a first fixing component for fixing an esophagus section of the in-vitro pig stomach and a second fixing component for fixing a duodenum section, a sealed cavity for accommodating the in-vitro pig stomach is arranged in the container body, and the sealed pig stomach fixator further comprises a first pressure input piece for inputting pressure to the sealed cavity and a second pressure input piece for inputting pressure to the in-vitro pig stomach. According to the sealed and pressure-controllable pig stomach fixator provided by the invention, the pressure in the sealed cavity can be regulated and controlled through the first pressure input part, and the pressure in the in-vitro pig stomach can be regulated and controlled through the second pressure input part, so that different environments can be simulated by the in-vitro pig stomach for an operator to perform model training, and the effect obtained by an in-digestive endoscopy operator operating and training a model is effectively improved.)

1. The utility model provides a sealed and controllable pig stomach fixer of pressure, includes the container body, this internal fixed establishment who is used for fixed separation pig stomach that is provided with of container, fixed establishment is including being used for fixing the first fixed subassembly of the esophagus section of separation pig stomach and the fixed subassembly of second that is used for fixed duodenum section, its characterized in that, this internal being provided with of container is used for holding the sealed chamber of separation pig stomach still including be used for to the first pressure input piece of sealed chamber input pressure and be used for to the second pressure input piece of separation pig stomach input pressure.

2. The sealed, pressure-controllable swine stomach anchor of claim 1, wherein the second anchor assembly comprises a pressure input channel for the second pressure input to input pressure.

3. The sealed and pressure-controlled swine stomach anchor of claim 1, wherein the first and second anchor assemblies each comprise an inner cylinder and an outer cylinder capable of being sleeved over the inner cylinder, the outer cylinder and the inner cylinder forming an annular anchor lumen therebetween for anchoring the entire esophageal and duodenal segments.

4. The sealed and pressure-controlled swine stomach anchor as claimed in claim 3, wherein a restriction structure is provided on the outer cylinder, which is capable of moving in a radial direction of the outer cylinder to secure the full esophagus and duodenum segment on the outer sidewall of the inner cylinder.

5. The sealed, pressure-controllable swine stomach anchor as claimed in claim 1, further comprising a dynamic seal structure disposed between the inner cylinder and the endoscope for effecting a sealing connection of the endoscope to the inner cylinder at all times during travel.

6. The sealed and pressure-controllable pig stomach fixing device according to claim 5, wherein the dynamic sealing structure comprises a static sealing ring, a dynamic sealing ring and an elastic component which are connected in sequence, an annular groove for installing the static sealing ring is arranged in the inner cylinder body, and the dynamic sealing ring is pressed against the static sealing ring so that the static sealing ring is fixedly attached to the annular groove.

7. The sealed and pressure-controlled swine stomach anchor of claim 6, wherein the static seal ring is provided with a plurality of first elastic sealing portions along a circumference thereof, the dynamic seal ring is provided with a plurality of second elastic sealing portions along a circumference thereof, and the first elastic sealing portions and the second elastic sealing portions are staggered.

8. The sealed and pressure-controllable swine stomach anchor of claim 1, wherein the securing mechanism further comprises a mobile securing clip disposed on an inside wall of the container body, the mobile securing clip for securing the isolated swine stomach.

9. The sealed and pressure-controllable swine stomach fixator according to claim 8, wherein the movable fixing clamp comprises a frame body and a fixing clamp arranged on the frame body, a telescopic driving member is connected to the frame body, and the telescopic driving member can drive the frame body and the fixing clamp to reciprocate to realize peristalsis of the isolated swine stomach.

10. The sealed and pressure-controllable swine stomach fixator of claim 1, wherein the fixing mechanism further comprises a support frame disposed within the container body, the support frame having a squeezing structure disposed thereon capable of squeezing the isolated swine stomach.

Technical Field

The invention relates to the technical field of medical auxiliary equipment, in particular to a sealed and pressure-controllable pig stomach fixator.

Background

Currently, control strategies for neoplastic disease have shifted from passive therapy to active prevention and early identification. With the improvement of health consciousness and the progress of endoscope diagnosis and treatment level of people, the diagnosis and treatment level of early gastric cancer by domestic digestive endoscopy doctors is also improved year by year at present.

Endoscopic Submucosa Dissection (ESD) has been gradually applied to clinic as a new minimally invasive treatment technology, which expands the indication range of endoscopic submucosal dissection (EMR) treatment and avoids the problem of focus residue and recurrence faced by EMR technology. However, ESD is highly demanding for endoscopists, and can cause serious complications such as perforation and bleeding in case of operational errors. Therefore, an endoscopist needs to train repeatedly for a long time to master the technology, and complications are avoided. However, the practical opportunities provided for beginners in clinical practice are not many, and how to provide a good operation training model for digestive endoscopy physicians to perform ESD training gives the beginners emergency treatment on the training model has great significance for the beginners. Currently, simulated training of digestive endoscopy often uses a commercially available live pig or pig's digestive tract (i.e., pig stomach) to replace the human digestive tract.

If the publication number is CN210052400U, the name is "a pig stomach fixing device for endoscope minimally invasive simulation operation practice", the publication number is 2020, 2, month and 11 days of the utility model application, which comprises a box cover, a box body and a box bottom, the box body comprises a first side plate, a second side plate, a third side plate and a fourth side plate, the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected to form the box body, an operation training hole is arranged at the center of the first side plate, an operation training pipe for fixing the esophagus is arranged in the operation training hole, and the operation training pipe passes through the operation training hole and is positioned in the box body; the outer wall of the operation training pipe is provided with a plurality of grooves; the third side plate is provided with a preformed hole, a sponge is arranged in the box body, the sponge is hollowed to form an accommodating space matched with the pig stomach, and the pig stomach is placed in the accommodating space; the preformed hole is used for an electrode plate to pass through, and the electrode plate is arranged in the accommodating space and is positioned at the bottom of the pig stomach. The utility model discloses a patent application is when using, overlaps the esophagus of pig stomach on the operation training pipe, and is fixed with accuse line rope, and the intestines part is pricked with accuse line rope and is closed, and the plate electrode is placed in pig stomach below through the preformed hole, and the sponge fretwork in the box body forms and pig stomach matched with accommodation space, is provided with three or four recesses on the operation training pipe, increases the friction between pig esophagus and the operation training pipe, has easily pig esophagus cover to establish outside the operation training hole.

If the publication number is CN207473880U, the name is ESD technology simulation experiment device and experiment equipment, and the publication date is 2018, 6 months and 8 days, the utility model comprises a container body, an in-vitro pig stomach, a first positioning piece and an endoscope; the in-vitro pig stomach is fixedly connected in the container body, the first positioning piece is fixedly connected to the side surface of the container body, one end of the first positioning piece is arranged in the container body, and the other end of the first positioning piece is arranged outside the container body; one end of the in-vitro pig stomach is a duodenum segment, the outlet end of the duodenum segment is closed and connected by using a hemostatic forceps holder, the other end of the in-vitro pig stomach is a full-segment esophagus, the inlet end of the full-segment esophagus penetrates through the inner side end of the container of the first positioning member, penetrates out of the outer side end of the container of the first positioning member and then is turned outwards to be fixedly connected to the outer circumferential surface of the outer side end of the container of the first positioning member; the endoscope enters along the entrance end of the full section of esophagus and is communicated with the inside of the isolated pig stomach. The utility model discloses a patent application fixes through container body, first locating piece and hemostatic forceps holder, in the operation process, the endoscope along the entrance point of whole section esophagus right-hand member gets into gradually, finally deepens the inside of separation pig stomach.

In the simulation training process of utilizing pig stomach to carry out digestion endoscope to go on among the prior art, all fix the pig stomach to the fixing device of pig stomach model, nevertheless have very big difference between pig stomach model and the human alimentary canal, pressure inside and outside the human alimentary canal is different with the pressure inside and outside the pig stomach model, so because the difference of simulation bionic environment makes often that the digestion endoscope doctor utilizes the operation training model to carry out ESD's training condition relatively poor, can not reach anticipated effect.

Disclosure of Invention

The invention aims to provide a pig stomach fixing device which is sealed and controllable in pressure, and aims to overcome the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a sealed and controllable pig stomach fixer of pressure, includes the container body, this internal fixed establishment who is used for fixed separation pig stomach that is provided with of container, fixed establishment is including being used for fixing the first fixed subassembly of the esophagus section of separation pig stomach and the fixed subassembly of second that is used for fixed duodenum section, this internal being provided with of container is used for holding the sealed chamber of separation pig stomach still including be used for to the first pressure input piece of sealed chamber input pressure and be used for to the second pressure input piece of separation pig stomach input pressure.

The sealed and pressure-controllable pig stomach fixing device comprises a second fixing assembly and a second pressure input component, wherein the second fixing assembly comprises a pressure input channel, and the pressure input channel is used for inputting pressure by the second pressure input component.

The first fixing component and the second fixing component both comprise an inner cylinder body and an outer cylinder body which can be sleeved on the inner cylinder body, and an annular fixing cavity for fixing the whole esophagus and the duodenum is formed between the outer cylinder body and the inner cylinder body.

In the sealed and pressure-controllable pig stomach fixing device, the outer cylinder is provided with a limiting structure which can move along the radial direction of the outer cylinder to fix the whole esophagus and duodenum section on the outer side wall of the inner cylinder.

The pig stomach fixing device with the sealing function and the controllable pressure further comprises a dynamic sealing structure, wherein the dynamic sealing structure is arranged between the inner cylinder body and the endoscope and used for achieving that the endoscope is always in sealing connection with the inner cylinder body in the advancing process.

The sealed and pressure-controllable pig stomach fixator comprises a static sealing ring, a dynamic sealing ring and an elastic assembly which are sequentially connected, wherein an annular groove for installing the static sealing ring is formed in the inner barrel, and the dynamic sealing ring abuts against and presses the static sealing ring so that the static sealing ring is attached and fixed to the annular groove.

According to the pig stomach fixing device with sealing and controllable pressure, the static sealing ring is provided with the plurality of first elastic sealing parts along the circumferential direction, the dynamic sealing ring is provided with the plurality of second elastic sealing parts along the circumferential direction, and the first elastic sealing parts and the second elastic sealing parts are arranged in a staggered mode.

The sealed pig stomach fixer with controllable pressure is characterized in that the fixing mechanism further comprises a movable fixing clamp arranged on the inner side wall of the container body, and the movable fixing clamp is used for fixing the separated pig stomach.

Foretell sealed and controllable pig stomach fixer of pressure, remove the fixation clamp and include the support body and set up the fixation clamp on the support body, be connected with flexible driving piece on the support body, flexible driving piece can drive support body and fixation clamp reciprocating motion are in order to realize right the wriggling of separation pig stomach position.

The sealed and pressure-controllable pig stomach fixing device is characterized in that the fixing mechanism further comprises a support frame arranged in the container body, and an extrusion structure capable of extruding the separated pig stomach is arranged on the support frame.

In the technical scheme, the sealed and pressure-controllable pig stomach fixator provided by the invention has the advantages that the fixing mechanism for fixing the in-vitro pig stomach is arranged in the container body, the sealed cavity for accommodating the in-vitro pig stomach is arranged in the container body, the first pressure input part capable of inputting pressure is connected to the sealed cavity, the second pressure input part capable of inputting pressure is connected to the in-vitro pig stomach, the pressure in the sealed cavity can be adjusted and controlled through the first pressure input part, and the pressure in the in-vitro pig stomach can be adjusted and controlled through the second pressure input part, so that different environments can be simulated by the in-vitro pig stomach for an operator to carry out model training, and the effect obtained by operating and training a model by a digestive endoscopy is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic structural diagram of a sealed and pressure-controllable swine stomach anchor according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a sealed and pressure-controlled swine stomach anchor according to yet another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first fixing assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a confinement structure provided in an embodiment of the invention;

fig. 5 is a schematic structural diagram of a dynamic seal body according to another embodiment of the present invention;

FIG. 6 is a schematic structural view of a static seal ring according to another embodiment of the present invention;

FIG. 7 is a schematic structural view of a mobile fastening clip according to yet another embodiment of the present invention;

FIG. 8 is a schematic structural view of a supporting frame according to another embodiment of the present invention;

fig. 9 is a schematic structural diagram of an extrusion structure according to still another embodiment of the present invention.

Description of reference numerals:

1. a container body; 1.1, a first pressure input; 1.2, a second pressure input; 1.3, sealing the cavity; 2. in vitro pig stomach; 2.1, an esophagus section; 2.2, segment of duodenum; 3. a fixing mechanism; 3.1, a first fixing component; 3.2, a second fixing component; 3.3, an inner cylinder body; 3.3.1, an annular restriction groove; 3.4, an outer cylinder body; 3.5, arc-shaped fixing pieces; 3.6, a driving part; 3.7, a movable sleeve; 4. a dynamic sealing structure; 4.1, a static sealing ring; 4.1.1, a first elastic sealing part; 4.2, moving the sealing ring; 4.3, spring elements; 4.4, sealing sleeves; 4.5, annular pressing rings; 4.6, annular plugging pieces; 4.7, an annular groove; 4.8, an annular fixing groove; 4.9, an annular adjusting groove; 5. moving the fixing clamp; 5.1, a frame body; 5.2, fixing the clamp; 5.3, a lower fixing clamp; 5.4, an upper elastic piece; 5.5, a lower elastic piece; 5.6, a first magnetic attraction piece; 5.7, a second magnetic part; 5.8, a telescopic driving piece; 6. extruding the structure; 6.1, a support frame; 6.2, arc-shaped extrusion plates; 6.3, driving the cylinder; 6.4, connecting rods; 6.5, a sliding plate; 6.6, compressing the spring; 6.7, a driving structure; 7. an endoscope.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 9, an embodiment of the present invention provides a sealed and pressure-controllable swine stomach fixator, which includes a container body 1, a fixing mechanism 3 for fixing an isolated swine stomach 2 is disposed in the container body 1, the fixing mechanism 3 includes a first fixing component 3.1 for fixing an esophageal segment 2.1 of the isolated swine stomach 2 and a second fixing component 3.2 for fixing a duodenal segment 2.2, a sealed cavity 1.3 for accommodating the isolated swine stomach 2 is disposed in the container body 1, and the swine stomach fixator further includes a first pressure input member 1.1 for inputting pressure to the sealed cavity 1.3 and a second pressure input member 1.2 for inputting pressure to the isolated swine stomach 2.

Specifically, two ends of the in vitro pig stomach 2 are respectively an esophagus section 2.1 used for connecting an esophagus and a duodenum section 2.2 used for connecting a pig intestine, the in vitro pig stomach 2 is only provided with the two openings communicated with the outside in the default embodiment, the container body 1 is used for placing the in vitro pig stomach 2, the inside of the container body 1 is provided with a sealed cavity 1.3, the sealed cavity 1.3 can be opened or closed, the in vitro pig stomach 2 can be placed into the sealed cavity 1.3 and then the sealed cavity 1.3 can be closed, the fixing mechanism 3 is arranged inside the sealed cavity 1.3, the fixing mechanism 3 is used for fixing the in vitro pig stomach 2 inside the container body 1, so that an operator can perform simulation training on the endoscope 7, the in vitro pig stomach 2 comprises a pig stomach body, the esophagus section 2.1 and the duodenum section 2.2 which are positioned at two ends of the pig stomach body, the fixing mechanism 3 comprises a first fixing component 3.1 and a second fixing component 3.2, the first fixing component 3.1 is used for fixing the esophagus section 2.1, i.e. the esophageal segment 2.1, to the container body, and the second securing assembly is used to secure the duodenal segment 2.2, i.e. to connect the duodenal segment 2.2 to the container body. Optionally, the fixing mechanism 3 may further include a fixing component for fixing other parts of the pig stomach body, so as to fix the in-vitro pig stomach 2, and prevent the in-vitro pig stomach 2 from moving or shaking during the simulated training process of the endoscope 7, the sealed cavity 1.3 is connected with a first pressure input member 1.1, the first pressure input member 1.1 is used for inputting gas or liquid into the sealed cavity 1.3, so as to adjust the pressure in the sealed cavity 1.3, the in-vitro pig stomach 2 is connected with a second pressure input member 1.2, the second pressure input member 1.2 is used for inputting gas or liquid into the in-vitro pig stomach 2, so as to adjust the pressure in the in-vitro pig stomach 2, so that during the actual training process, different operating environments can be simulated through the first pressure input member 1.1 and the second pressure input member 1.2 for the training of the operator, and the simulated operating environments include but are not limited to the following conditions, The pressure of the sealed cavity 1.3 is equal to the pressure inside the in vitro pig stomach 2, and the simulation operation is performed under the normal condition of the in vitro pig stomach 2; secondly, the pressure of the sealed cavity 1.3 is greater than the pressure inside the in vitro pig stomach 2, and the in vitro pig stomach 2 is compressed, so that the simulation operation under the extrusion environment is realized; thirdly, the pressure of the sealed cavity 1.3 is less than the pressure inside the in vitro pig stomach 2, so that the simulation operation is performed under the condition that the in vitro pig stomach 2 is expanded; fourthly, the internal pressure of the in-vitro pig stomach 2 is kept unchanged, the internal pressure of the sealed cavity 1.3 is constantly changed according to the set condition, and the in-vitro pig stomach 2 is constantly extruded in such a way, so that the operation environment is more similar to the digestive tract of a human body, and the training effect is improved; fifthly, the pressure in the sealed cavity 1.3 is kept unchanged, and the pressure in the isolated pig stomach 2 is continuously changed according to the set condition, so that the condition of continuous peristalsis of the digestive tract is simulated, and the operation simulation is realized under the condition of the peristalsis of the digestive tract; sixthly, the pressure in the sealed chamber 1.3 and the pressure in the separation pig stomach 2 all change according to the condition of setting for, simulate out the condition of alimentary canal wriggling and extrusion like this, can also simulate out other environment through first pressure input 1.1 and second pressure input 1.2 to provide more various and complicated simulated environment for the operator, promote 7 doctors of endoscope and utilize the operation training model to carry out the effect of ESD training. The first pressure input member 1.1 and the second pressure input member 1.2 are structures for inputting pressure gas or liquid, and corresponding structures can refer to the prior art and are not described in detail.

In this embodiment, the container body 1 is a box, a tank or other structure having a sealed cavity 1.3, the sealed cavity 1.3 can be opened or closed, a cover can be disposed on the container body 1 to open or close the sealed cavity 1.3, when the sealed cavity 1.3 is opened, the isolated pig stomach 2 can be placed inside the sealed cavity 1.3 for fixing, after the isolated pig stomach 2 is fixed, the sealed cavity 1.3 is closed, the pressure inside the sealed cavity 1.3 is adjusted by the first pressure input member 1.1 to perform training operation, the fixing mechanism 3 is disposed inside the sealed cavity 1.3, the first fixing component 3.1 and the second fixing component 3.2 can be fixing clamps, fixing latches or fixing rods, and the like, so as to fix the esophageal end and the duodenal segment 2.2 of the isolated pig stomach 2, preferably, the first fixing component 3.1 is provided with an operation channel for the endoscope 7 to enter the esophageal segment 2.1, so in the operation training process, endoscope 7 can follow the inside that the operation passageway gradually enters into separation pig stomach 2, the fixed subassembly of second 3.2 seals fixedly to duodenum section 2.2, even make the tip of duodenum section 2.2 sealed, so make the inside of separation pig stomach 2 also form a sealed space, be convenient for the pressure regulation and the control of second pressure input piece 1.2 to separation pig stomach 2 inside, fixed establishment 3 can also include the mounting except that first fixed subassembly 3.1 and the fixed subassembly of second 3.2, so realize fixing other positions of separation pig stomach 2, optionally, fixed establishment 3 still includes the traction piece, can pull separation pig stomach 2 through the traction piece, make separation pig stomach 2 can expand so that train the operation.

In this embodiment, the first pressure input member 1.1 includes a first pressure providing device and a first connecting member connected to the first pressure providing device, the second pressure input member 1.2 includes a second pressure providing device and a second connecting member connected to the second pressure providing device, the first and second pressure providing devices may be a pneumatic or hydraulic pump, etc., the first connecting member is connected to the sealed cavity 1.3, so that the pressure in the sealed cavity 1.3 can be adjusted through the first pressure providing device and the first connecting member, the second connecting member is connected to the inside of the isolated pig stomach 2, the second connecting member may be one of the first fixing member 3.1 or the second fixing member 3.2, e.g., a connecting channel is provided on the second fixing member 3.2, the connecting channel is connected to the second pressure providing device, the pressure in the pig stomach body can be adjusted through the second pressure providing device and the connecting channel, the second connecting piece can be other connecting pieces that are connected with separation pig stomach 2, and first pressure provides the pressure adjustment of device in to sealed chamber 1.3 and the pressure adjustment of second pressure provides the device to sealed chamber 1.3 and all realizes through controlling means, and controlling means can be singlechip, PLC controlling means, can make sealed chamber 1.3 and separation pig stomach 2 can simulate different operating environment through controlling means, promotes the effect of operator simulation training.

The invention provides a side-leakage-preventing isolated pig stomach 2 model fixing device, wherein a fixing mechanism 3 for fixing an isolated pig stomach 2 is arranged in a container body 1, a sealing cavity 1.3 for accommodating the isolated pig stomach 2 is arranged in the container body 1, a first pressure input part 1.1 capable of inputting pressure is connected to the sealing cavity 1.3, a second pressure input part 1.2 capable of inputting pressure is connected to the isolated pig stomach 2, the pressure in the sealing cavity 1.3 can be adjusted and controlled through the first pressure input part 1.1, and the pressure in the isolated pig stomach 2 can be adjusted and controlled through the second pressure input part 1.2, so that the isolated pig stomach 2 can simulate different environments for an operator to perform model training, and the effect obtained by operating and training a model by an endoscope 7 is effectively improved.

In the embodiment provided by the invention, the second fastening assembly 3.2 preferably comprises a pressure supply channel for the second pressure supply 1.2 to supply pressure. The fixed subassembly 3.2 of second can include dead lever and a fixed section of thick bamboo, the duodenum section 2.2 overcoat is on dead lever or a fixed section of thick bamboo, pressure input channel is the central channel who sets up in dead lever central point position or the central channel in the fixed section of thick bamboo, pressure input channel is linked together with the inside of separation pig stomach 2, so realize through pressure input channel that separation pig stomach 2 is connected with second pressure input 1.2, make separation pig stomach 2 model fixing device simple structure, the pressure regulation of separation pig stomach 2 of second pressure input 1.2 of being convenient for.

In the embodiment provided by the invention, preferably, each of the first fixing component 3.1 and the second fixing component 3.2 comprises an inner cylinder 3.3 and an outer cylinder 3.4 capable of being sleeved on the inner cylinder 3.3, and an annular fixing cavity for fixing the esophagus section 2.1 and the duodenum section 2.2 is formed between the outer cylinder 3.4 and the inner cylinder 3.3. When the esophagus section 2.1 and the duodenum section 2.2 are fixed, firstly, the outer cylinder 3.4 is sleeved on the esophagus section 2.1 or the duodenum section 2.2, then the inner cylinder 3.3 is plugged into the esophagus section 2.1 and the duodenum section 2.2, the outer cylinder 3.4 and the inner cylinder 3.3 are kept to be staggered, and then the outer cylinder 3.4 is rotated or slid, so that the outer cylinder 3.4 and the inner cylinder 3.3 are fixed and the esophagus section 2.1 or the duodenum section 2.2 is pressed, and the esophagus section 2.1 and the duodenum section 2.2 are fixed.

In the embodiment provided by the invention, preferably, the outer cylinder 3.4 is provided with a limiting structure which can move along the radial direction of the outer cylinder 3.4 to fix the esophagus section 2.1 and the duodenum section 2.2 on the outer side wall of the inner cylinder 3.3, the limiting structure can be a limiting ring and a limiting block, as a preferred structure, the limiting structure comprises an arc-shaped fixing piece 3.5 arranged on the outer cylinder 3.4, an installation groove capable of installing the arc-shaped fixing piece 3.5 is arranged on the inner part of the outer cylinder 3.4, the arc-shaped fixing piece 3.5 is movably connected with the installation groove, an annular limiting groove 3.3.1 is arranged on the outer side wall of the inner cylinder 3.3, and the arc-shaped fixing piece 3.5 can move along the radial direction of the outer cylinder 3.4 to embed the esophagus section 2.1 and the duodenum section 2.2 of the ex-pig stomach 2 into the annular limiting groove 3.3.1 so as to be fixed; the arc-shaped fixing piece 3.5 is connected with a driving part 3.6 extending out of the outer side wall of the outer barrel body 3.4, the movable sleeve 3.7 is movably sleeved on the outer barrel body 3.4, the driving part 3.6 blocks the movable sleeve 3.7 on the movement stroke of the movement of the outer barrel body 3.4, the movable sleeve 3.7 can press against the driving part 3.6 along the movement of the outer barrel body 3.4, and the driving part 3.6 drives the arc-shaped fixing piece 3.5 to move along the radial direction of the outer barrel body 3.4, so that the section esophagus and the duodenum section 2.2 are embedded into the annular limiting groove 3.3.1, and the limitation and the fixation of the section esophagus and the duodenum section 2.2 are realized. During the motion, the movable sleeve 3.7 rotates for outer barrel 3.4, and its rotation process extrudes drive division 3.6, and drive division 3.6 then extrudees arc stationary blade 3.5 in order to drive the latter motion, and structurally, the simplest, be provided with the bulge on the inner wall of movable sleeve 3.7, movable sleeve 3.7 rotates and makes the bulge butt and extrude drive division 3.6, and drive division 3.6 receives then extrusion arc stationary blade 3.5 after the extrusion.

In another embodiment provided by the invention, it is preferable that the endoscope device further comprises a dynamic sealing structure 4, which is arranged between the inner cylinder 3.3 and the endoscope 7, and is used for realizing the sealing connection between the endoscope 7 and the inner cylinder 3.3 all the time during the process of advancing. Move seal structure 4 along the radial setting of interior barrel 3.3, so at the in-process that endoscope 7 marchd to separation pig stomach 2 in, move seal structure 4 and make the inside of separation pig stomach 2 sealed, effectively avoid the pressure of separation pig stomach 2 to change.

In another embodiment provided by the invention, preferably, the dynamic sealing structure 4 comprises a static sealing ring 4.1, a dynamic sealing ring 4.2 and an elastic component which are sequentially connected, an annular groove 4.7 for installing the static sealing ring 4.1 is arranged in the inner cylinder 3.3, and the dynamic sealing ring 4.2 is pressed against the static sealing ring 4.1 so as to ensure that the static sealing ring 4.1 is attached and fixed on the annular groove 4.7. The annular groove 4.7 is arranged at one side of the inner cylinder body 3.3 close to the inside of the container body 1, the static sealing ring 4.1 is arranged, the inner side edge of the static sealing ring 4.1 is jointed and connected with a pipe body of the endoscope 7, the endoscope 7 can move relative to the static sealing ring 4.1, the outer side edge of the static sealing ring 4.1 is jointed and connected on the side wall of the annular groove 4.7, the inner wall of the inner cylinder body 3.3 is provided with an annular fixing groove 4.8 connected with the annular groove 4.7, the movable sealing ring 4.2 and the elastic component are both arranged in the annular fixing groove 4.8, the elastic component comprises a spring part 4.3 and an annular plugging part 4.6, the static sealing ring 4.1, the movable sealing ring 4.2, the spring part 4.3 and the annular plugging part 4.6 are sequentially arranged and fixed in the inner cylinder body 3.3 in a clamping way, a threaded connection way and the like, so that the spring part 4.3 always provides elastic force to press the static sealing ring 4.2, so that the static sealing ring 4.1 is attached and fixed on the annular groove 4.7, and the sealing connection between the endoscope 7 and the inner cylinder 3.3 is realized.

In another embodiment provided by the invention, preferably, an adjusting and sealing structure is further arranged between the spring element 4.3 and the annular blocking element 4.6, the adjusting and sealing structure comprises a sealing sleeve 4.4 and an annular abutting ring 4.5, an annular adjusting groove 4.9 connected with the annular fixing groove 4.8 is arranged on the inner wall of the inner cylinder 3.3, the proceeding size of the annular adjusting groove 4.9 is larger than the radial size of the annular fixing groove 4.8, the sealing sleeve 4.4 abuts against the other end of the spring element 4.3, the sealing sleeve 4.4 is sleeved on the tube body of the endoscope 7, the outer side edge of the sealing sleeve 4.4 is fixedly attached to the side wall of the annular fixing groove 4.8, one end of the sealing sleeve 4.4 far away from the spring element 4.3 is provided with an annular side edge which is always positioned in the annular adjusting groove 4.9, the annular abutting ring 4.5 is positioned in the annular adjusting groove 4.9 and is attached to the sealing sleeve 4.4, the annular blocking element 4.6 is rotatably connected in the annular adjusting groove 4.9, and the inner cylinder 3, static sealing ring 4.1, move sealing ring 4.2, spring part 4.3, seal cover 4.4, annular is supported clamping ring 4.5 and annular shutoff piece 4.6 and is installed and fixed in proper order, thereby annular shutoff piece 4.6 can support in proper order and press annular to support clamping ring 4.5 in annular adjustment groove 4.9, seal cover 4.4, spring part 4.3 and move sealing ring 4.2, so seal cover 4.4 and annular are supported clamping ring 4.5 and also form a seal structure, thereby promote the sealed effect between barrel 3.3 and the endoscope 7, and can adjust the elasticity of spring part 4.3 through the rotation of annular shutoff piece 4.6, realize the regulation to sealed effect, simultaneously after long-time use, through the rotation to passing through annular shutoff piece 4.6, make spring part 4.3 can remain suitable elasticity throughout, ensure the support to static sealing ring 4.1.

In another embodiment provided by the present invention, preferably, the static seal ring 4.1 is provided with a plurality of first elastic sealing portions 4.1.1 along the circumferential direction thereof, the dynamic seal ring 4.2 is provided with a plurality of second elastic sealing portions along the circumferential direction thereof, and the first elastic sealing portions 4.1.1 and the second elastic sealing portions are arranged in a staggered manner. First elastic sealing portion 4.1.1 makes quiet sealing ring 4.1 have elasticity for it can expand along circumference, second elastic sealing portion makes and moves sealing ring 4.2 and has elasticity, make it also can expand along circumference, so realize can be zonulae occludens between quiet sealing ring 4.1 and the dynamic sealing ring 4.2 and the endoscope 7, make again quiet sealing ring 4.1 and dynamic sealing ring 4.2 do not influence the operation of advancing of endoscope 7, and because first elastic sealing portion 4.1.1 and the crisscross setting of second elastic sealing portion, can increase the sealed effect of quiet sealing ring 4.1 and dynamic sealing ring 4.2.

In another embodiment provided by the present invention, preferably, the fixing mechanism 3 further comprises a movable fixing clip 5 disposed on the inner side wall of the container body 1, and the movable fixing clip 5 is used for fixedly connecting the outer wall of the excised pig stomach 2. The movable fixing clamp 5 can be installed at different positions on the container body 1, the movable fixing clamp 5 can be fixed on the container body 1 through a fixing plate and the like, a movable groove for the movable fixing clamp 5 to move can be further arranged on the inner wall of the container body 1, the movable fixing clamp 5 is fixed inside the movable groove after the movable fixing clamp 5 moves to a proper position, the movable fixing clamp 5 comprises a frame body 5.1, an upper fixing clamp 5.2 and a lower fixing clamp 5.3 which are arranged on the frame body 5.1, the upper fixing clamp 5.2 is fixedly connected to the upper part of the frame body 5.1 through an upper elastic piece 5.4, the lower fixing clamp 5.3 is fixedly connected to the lower part of the frame body 5.1 through a lower elastic piece 5.5, under the action of the elastic force of the upper elastic piece 5.4 and the lower elastic piece 5.5, the upper fixing clamp 5.2 and the lower fixing clamp 5.3 can fix the edge part of the separated pig stomach 2 positioned in the middle of the upper fixing clamp 5.2, in order to improve the clamping force between the upper fixing clamp 5.2 and the lower fixing clamp 5.3, the upper fixing clamp 5.2 can be provided with a first magnetic attraction piece 5.6, the lower fixing clamp 5.3 is provided with a second magnetic attraction piece 5.7, and the magnetic poles of the opposite ends of the first magnetic attraction piece 5.6 and the second magnetic attraction piece 5.7 are different, namely the two magnetic attraction pieces attract each other.

In another embodiment provided by the present invention, preferably, the movable fixing clip 5 includes a frame body 5.1 and a fixing clip disposed on the frame body 5.1, the frame body 5.1 is connected with a telescopic driving member 5.8, and the telescopic driving member 5.8 can drive the frame body 5.1 and the fixing frame to reciprocate so as to realize the peristalsis of the isolated pig stomach 2. The fixation clamp includes fixation clamp 5.2 and lower fixation clamp 5.3, flexible driving piece 5.8 can be piston assembly, also can be link assembly or gear assembly etc. through flexible driving piece 5.8 can drive support body 5.1 and set up last fixation clamp 5.2 on support body 5.1 and lower fixation clamp 5.3 back and forth movement, thereby the wriggling of human alimentary canal is simulated, flexible driving piece 5.8 is preferred to be set up in the left and right sides of separation pig stomach 2, realize wriggling from the lateral part of separation pig stomach 2, the control of controlling means is received in the motion of flexible driving piece 5.8, make flexible driving piece 5.8 move as required.

In another embodiment provided by the present invention, preferably, the fixing mechanism 3 further includes a supporting frame 6.1 disposed in the container body 1, and the supporting frame 6.1 is provided with a squeezing structure 6 capable of squeezing the in-vitro pig stomach 2. Support frame 6.1 is fixed in the inside of vessel 1, support frame 6.1 is located the position of vessel 1 inside and can be adjusted, extrusion structure 6 also can be adjusted for the height of support frame 6.1, so realize squeezing 2 different positions of separation pig stomach, extrusion structure 6 on the support frame 6.1 has at least one, also can have two or more, extrusion structure 6 can set up the upper portion or the lower part at separation pig stomach 2, also can all be provided with extrusion structure 6 in the upper portion and the lower part of separation pig stomach 2, the preferred setting of extrusion structure 6 is in the terminal and pylorus equipotential of separation pig stomach 2, thereby effectively simulate out the environment of alimentary canal shrink.

In still another embodiment of the present invention, preferably, the extruding structure 6 includes an arc-shaped extruding plate 6.2 and a driving cylinder 6.3, the driving cylinder 6.3 is connected to the supporting frame 6.1 through an expansion link, the expansion link can adjust the heights of the driving cylinder 6.3 and the arc-shaped extruding plate 6.2, one side of the arc-shaped extruding plate 6.2 can be attached to the isolated pig stomach 2, the other side of the arc-shaped extruding plate 6.2 is provided with a connecting rod 6.4, the end of the connecting rod 6.4 is located inside the driving cylinder 6.3 and is connected with a sliding plate 6.5, one end of the connecting rod 6.4 located inside the driving cylinder 6.3 is sleeved with a compression spring 6.6, the compression spring 6.6 is located between the sliding plate 6.5 and the upper side wall of the driving cylinder 6.3, the sliding plate 6.5 can slide up and down inside the driving cylinder 6.3, the driving structure 6.7 is connected to the driving cylinder 6.3, the driving structure 6.7 can drive the sliding plate 6.5 to move along the driving cylinder 6.3 so as to press the isolated pig stomach 2, the driving structure 6.7 can realize the driving of the sliding plate 6.5 through the air cylinder and the piston, the sliding plate 6.5 can also drive the sliding plate to move through the air pump, for example, the air pump is used for filling air into the driving cylinder 6.3, so that the driving of the sliding plate 6.5 is realized, the environment that the digestive tract is extruded is simulated, and the effect of simulated training is improved under the environment.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.