Foreign matter taking-out device for digestive system department and manufacturing method thereof

Abstract

The invention relates to the technical field of gastrointestinal endoscope accessories, and particularly provides a foreign matter taking-out device for the digestive system department and a manufacturing method of the foreign matter taking-out device. The airbag cup comprises an airbag cup framework and a membrane structure; the air bag cup framework comprises a cup body, a cup opening air bag, a supporting air bag and a clamping air bag. The upper end of the cup body is provided with an air suction port, the lower end is communicated with the main air pipe, and at least two opposite side ends of the cup body are respectively provided with an inflation port; the air suction port is provided with a negative pressure valve, and the inflation port is provided with a positive pressure valve. The supporting air bag is supported between the cup opening air bag and the cup body, and the inner side, located on the membrane structure, of the supporting air bag communicates with a clamping air bag. Compared with a traditional clamping jaw structure, the mode that the foreign matter is sucked out of the digestive tract through negative pressure is adopted, a gap between the foreign matter and the inner wall of the digestive tract does not need to be considered, angle or direction adjustment is not needed, and the advantages of being high in operation efficiency and convenient to operate are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of gastroenteroscopic accessories, and in particular relates to a foreign body removal device for gastroenterology and a manufacturing method thereof. Background Art

[0002] The digestive system consists of two parts: the digestive tract and the digestive glands. The digestive tract includes the mouth, pharynx, esophagus, stomach, small intestine (duodenum, jejunum, ileum) and large intestine (cecum, appendix, colon, rectum, anal canal). Clinically, the section from the mouth to the duodenum is often called the upper digestive tract, and the section from the jejunum to below is called the lower digestive tract.

[0003] Endoscopic diagnosis and treatment technology is widely used to discover and treat gastrointestinal diseases. The electronic endoscope system mainly includes a host and a mirror body. The host includes a high-definition display, an image processor, a cold light source, etc. The mirror body is provided with an angle control knob, an air inhalation valve, an air valve / water valve, and an instrument channel port. One end of the mirror body is connected to the host, and the other end is provided with an objective lens, an air / water pipe port, an image sensor, a light guide lens, etc. Among them, in order to facilitate endoscopic diagnosis and treatment, an instrument channel is also provided on the mirror body, and endoscopic diagnosis and treatment equipment (or endoscopic treatment consumables) are used for diagnosis and treatment operations through the instrument channel.

[0004] The patent with publication number CN1931083A discloses an endoscope system with a disposable sheath, which is provided with a disposable clamp channel tube (equivalent to the instrument channel) on the endoscope body, and the biopsy forceps are inserted into the disposable clamp channel tube to perform corresponding diagnosis and treatment operations. The patent with publication number CN118236127A discloses an endoscopic gastrointestinal polypectomy device, which clamps gastrointestinal polyps through a clamping mechanism and removes the polyps using a removal mechanism. The patent with publication number CN221786560U discloses an endoscopic foreign body clamp, which clamps foreign bodies with a clamping rod. In the existing gastrointestinal endoscopic examination or diagnosis and treatment process, foreign bodies or biopsy tissues are often clamped by an electronic endoscope system in conjunction with a clamping device, and the clamping device is mostly designed as a claw structure.

[0005] However, some foreign bodies have certain sharp corners and acute angles, thus forming irregularly shaped protrusions, which can scratch the patient's digestive tract during removal. In the process of using a clamping claw structure to clamp foreign bodies, the clamping claw structure needs to be placed between the foreign body and the inner wall of the digestive tract. However, in a small space, the shape of the foreign body is irregular, which requires the clamping claw to adjust its position or clamping angle, or find a suitable gap, resulting in low operating efficiency. For fine foreign bodies, the clamping claw structure is difficult to clamp and easy to fall off. Summary of the invention

[0006] In view of the problems existing in the above-mentioned prior art, the present invention provides a foreign body removal device for gastroenterology and a manufacturing method thereof, which solves the problems that the traditional clamping structure needs to adjust the angle to clamp the foreign body, the clamping is difficult, the operation efficiency is low, and the foreign body is easy to fall. The airbag is expanded to clamp and wrap the foreign body, which solves the problem that the traditional clamping structure is prone to scratching the digestive tract when clamping foreign bodies with protruding structures.

[0007] In the first aspect, the present invention proposes a foreign body removal device for gastroenterology, comprising: a main airway and an airbag cup and a positive and negative pressure air pump respectively connected to the two ends of the main airway; the positive and negative pressure air pumps are used to inflate or inhale air into the main airway; the airbag cup comprises an airbag cup frame and a membrane structure sealingly coated on the side wall of the airbag cup frame; the airbag cup frame comprises a cup body, a cup mouth airbag, a supporting airbag, and a clamping airbag; an air suction port is provided at the upper end of the cup body, and the lower end is connected to the main airway, and at least two opposite side ends of the cup body are respectively provided with an inflation port; the air suction port and the inflation port are both connected to the main airway; the air suction port A negative pressure valve is provided, and the negative pressure valve is opened only when the positive and negative pressure air pumps are inhaling air; a positive pressure valve is provided at the inflation port, and the positive pressure valve is opened only when the positive and negative pressure air pumps are inflating; the cup mouth airbag is a hollow annular structure, and a cup mouth airway is provided inside it, and the cup mouth airbags are spaced above the cup body; the support airbag is supported between the cup mouth airbag and the cup body, and a side wall airway is provided inside the support airbag; each of the inflation ports is connected to a support airbag, and the support airbag is also connected to the cup mouth airbag; each of the support airbags is connected to the clamping airbag on the inner side of the membrane structure.

[0008] Furthermore, the airbag cup skeleton also includes a shrinkable expansion component; each support airbag is equipped with a shrinkable expansion component; the shrinkable expansion component includes a flexible expansion wire and a piston plate and a magnetic plate respectively connected to the two ends of the expansion wire; the piston plate is arranged in the support airbag, and the outer edge of the piston plate is arranged against the inner wall of the support airbag; a part of the expansion wire is located in the support airbag, and the other part is located in the cup mouth airbag; the magnetic plate is arranged in the cup mouth airbag; when the positive pressure valve is opened, the magnetic plates of the two shrinkable expansion components arranged opposite to each other are brought close to each other until they are sucked tightly.

[0009] Furthermore, the retractable expansion component also includes a limiting ring; the limiting ring is arranged in the cup mouth airbag and close to the supporting airbag, and the expansion wire passes through the limiting ring; the inner diameter of the limiting ring is smaller than the outer diameter of the magnetic suction sheet.

[0010] Furthermore, an inner wall of the cup body corresponding to the air inlet is provided with a concave water storage tank.

[0011] Furthermore, the water storage tank is an annular structure, and the air intake is located on the inner side of the annular structure.

[0012] Furthermore, a horizontal filter screen is provided at a position where the lower end of the cup body is connected to the main air pipe.

[0013] Furthermore, a plurality of spikes are distributed on the upper end of the filter screen, and the spikes are provided with barb structures.

[0014] Furthermore, a plurality of through holes communicating with the clamping airbag are arranged at intervals along the height direction of the inner side of the supporting airbag.

[0015] Furthermore, the surface of the clamping airbag is provided with protrusions and depressions.

[0016] In a second aspect, the present invention further provides a method for manufacturing the above-mentioned foreign body removal device for gastroenterology, comprising the following steps:

[0017] A plurality of inflation ports are provided on the side wall of the cup body, and a positive pressure valve is installed at each inflation port; an air inlet is provided at the upper end of the cup body, and a negative pressure valve is installed at the air inlet; a hole is opened at the lower end of the cup body to communicate with the main air pipe;

[0018] According to the number and position of the inflation ports, support airbags are installed, one support airbag is installed at each inflation port, and all the support airbags are connected to the cup mouth airbag;

[0019] Connecting the clamping airbag with the supporting airbag to complete the assembly of the airbag cup frame;

[0020] The membrane structure is sealed and wrapped around the side wall of the airbag cup frame.

[0021] The beneficial effects of the present invention are as follows: an airbag cup is formed by a cup body, a cup mouth airbag, a supporting airbag and a clamping airbag, and a sealing coating film structure is formed on the side wall of the airbag cup, and an air suction port is set on the cup body. Air is sucked by a positive and negative pressure air pump to form a negative pressure in the cup space of the airbag cup, so as to attract foreign matter into the cup space, and one end of the foreign matter is placed at the air suction port. The foreign matter is fixed by adsorption and taken out of the digestive tract together with the airbag cup. Compared with the traditional method of clamping foreign matter with a clamping claw structure and dragging the foreign matter out of the digestive tract, there is no need to consider the gap between the foreign matter and the inner wall of the digestive tract, and there is no need to adjust the angle or orientation. It has the characteristics of high operating efficiency and convenient operation. Before inflation, the airbag cup is not expanded, so it is easy to enter the digestive tract, and it is a flexible structure, so there is no need to worry about scratching the digestive tract. Small particles can be sucked into the space inside the airbag cup by the complete negative pressure, and are not easy to fall off. For a large number of small particles, a large number of small particles can be sucked at one time, without the need to clamp them one by one. The efficiency of removing small particles is very high. For larger foreign objects, they are partially sucked into the cup body, and the clamping airbag is used to clamp and wrap the foreign objects that enter the cup body, thereby improving the fixation effect of the foreign objects and further preventing them from falling off. In addition, priority can be given to sucking the parts of the foreign objects with raised structures into the cup body to hide the raised structures of the foreign objects, and the clamping airbag can be used to wrap the raised structures to prevent the raised structures of the foreign objects from scratching the digestive tract during the removal of the foreign objects. By configuring a contraction-type expansion component in the support airbag, when the airbag cup enters the digestive tract in a contracted state and needs to be expanded, the support airbag is inflated to push the piston of the contraction-type expansion component upward, so that the expansion wire moves from the support airbag to the cup mouth airbag until the two magnetic suction pieces of the contraction-type expansion component configured in the two opposite support airbags are attracted and fixed, so that at least one-half of the circumference of the cup mouth airbag is provided with an expansion wire, and the cup mouth airbag is supported and opened by the expansion wire, so that foreign matter can smoothly enter the cup body, thereby improving the operation efficiency. By configuring a water storage tank on the inner wall of the cup mouth, the mucus in the digestive tract that enters the cup body under the influence of negative pressure can enter the water storage tank along the inner wall of the cup body, so as to avoid entering the main airway to cause blockage or affect the negative pressure adsorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the air bag cup of the foreign body removal device for gastroenterology of the present invention in a contracted state;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the airbag cup after it is deployed;

[0024] Figure 3 for Figure 2 A schematic diagram of a structure in which a foreign object is adsorbed in an airbag cup and a clamping airbag clamps the foreign object;

[0025] Figure 4It is a schematic cross-sectional view of the cup body of the present invention in an inflated state;

[0026] Figure 5 It is a cross-sectional structural schematic diagram of the cup body of the present invention in an air-intake state.

[0027] In the figure: 1-main air pipe; 2-positive and negative pressure air pump; 3-membrane structure; 4-cup body; 5-cup mouth airbag; 6-support airbag; 7-clamping airbag; 8-intake port; 9-negative pressure valve; 10-inflation port; 11-positive pressure valve; 12-expanded metal wire; 13-piston plate; 14-magnetic plate; 15-limiting ring; 16-water storage tank; 17-anti-overflow plate; 18-filter net; 19-spike part; 20-through hole; 21-foreign matter. DETAILED DESCRIPTION

[0028] The present application is further described in detail below with reference to the accompanying drawings and specific implementations:

[0029] like Figure 1-Figure 5 As shown, the foreign body removal device for gastroenterology proposed by the present invention comprises: a main airway 1 and an airbag cup and a positive and negative pressure air pump 2 respectively connected to both ends of the main airway 1.

[0030] The main trachea 1 can be a hard tube or a soft tube. The main trachea 1 and the airbag cup connected to one end thereof can be used as endoscopic diagnosis and treatment equipment or endoscopic treatment consumables, and can be used in conjunction with an electronic endoscope system. That is, the instrument channel on the body of the electronic endoscope is used to penetrate the main trachea 1, and the main trachea 1 and the airbag cup at its end follow the body tube of the electronic endoscope into the digestive tract. The specific operation can be carried out using existing technology, and this embodiment will not be repeated.

[0031] The positive and negative pressure air pump 2 can also be a finished product on the market, which can provide inflation and suction (or exhaust) functions. The positive and negative pressure air pump 2 is used to inflate or inhale air into the main trachea 1. When inflating the main trachea 1, the air pressure in the airbag cup increases, and the corresponding airbag structure expands; when inhaling or exhausting air into the main trachea 1, the air pressure in the airbag cup decreases, forming a negative pressure, which is used to adsorb or attract foreign matter 21 in the digestive tract.

[0032] The airbag cup includes an airbag cup frame and a membrane structure 3 sealed and coated on the side wall of the airbag cup frame; the membrane structure 3 can adopt a double-layer structure and coated on the outer side wall of the airbag cup frame. The local membrane structure 3 can also be coated on the connection between the airbag cup and the main air pipe 1 to ensure air tightness.

[0033] The airbag cup frame comprises a cup body 4, a cup mouth airbag 5, a supporting airbag 6, a clamping airbag 7, and a contraction-type expansion component.

[0034] The upper end of the cup body 4 is provided with an air inlet 8, which can be regarded as the cup mouth of the cup body 4. The lower end of the cup body 4 is opened to communicate with the main air pipe 1. The cup body 4 is made of flexible plastic, rubber or silicone. The upper end diameter of the cup body 4 is larger than the lower end diameter.

[0035] At least two opposite side ends of the cup body 4 are respectively provided with an air filling port 10; the two oppositely arranged air filling ports 10 can be regarded as a group, and the side wall of the cup body 4 can be provided with multiple groups of air filling ports 10, and the multiple groups of air filling ports 10 are evenly distributed along the circumference of the cup body 4, and each group of air filling ports 10 includes two air filling ports 10 arranged oppositely along the radial direction of the cup body 4. In this embodiment, the cup body 4 is provided with a group of air filling ports 10, that is, two air filling ports 10 arranged along the radial direction of the cup body 4 are provided.

[0036] The air inlet 8 and the air charging port 10 are both connected to the main air pipe 1 , that is, the air inlet 8 , the air charging port 10 and the main air pipe 1 are all connected to the internal space of the cup body 4 .

[0037] The air inlet 8 is provided with a negative pressure valve 9, which is opened only when the positive and negative pressure air pump 2 inhales. The air charging port 10 is provided with a positive pressure valve 11, which is opened only when the positive and negative pressure air pump 2 inflates.

[0038] Both the negative pressure valve 9 and the positive pressure valve 11 use one-way valve discs, which can be made of silicone or rubber sheets. Figure 4 , Figure 5 As shown, the negative pressure valve 9 is hinged to the inner wall at the air intake port 8, and the negative pressure valve 9 can only be opened downward. When the positive and negative pressure air pumps 2 inhale, negative pressure is formed inside the cup body 4, and the negative pressure valve 9 opens. The positive and negative pressure air pumps 2 further absorb the air in the internal space of the airbag cup (the space above the cup body 4), further forming a negative pressure and adsorbing the foreign matter 21 at the airbag 5 at the cup mouth until the foreign matter 21 is sucked into the airbag cup or is close to the port of the main air pipe 1.

[0039] The positive pressure valve 11 is hinged to the inner wall of the inflation port 10, and the positive pressure valve 11 can only be opened upward. When the positive and negative pressure air pumps 2 are inflating, the negative pressure valve 9 is pushed upward to close, and the air inside the cup body 4 overflows from the inflation port 10, opens the positive pressure valve 11, enters the supporting airbag 6, and gradually fills the clamping airbag 7 and the cup mouth airbag 5.

[0040] It should be noted that the inflation and suction of the positive and negative pressure air pumps 2 can be performed alternately. When the airbag cup enters the digestive tract, it is in an uninflated state, or the positive pressure valve 11 is manually opened and the negative pressure valve 9 is manually closed in advance, and the positive and negative pressure air pumps 2 are started to suction, and the air inside the cup mouth airbag 5, the supporting airbag 6 and the clamping airbag 7 is extracted, so that the airbag cup frame is formed as shown in FIG. Figure 1As the negative pressure valve 9 and the positive pressure valve 11 both adopt one-way valve flaps, manual opening and closing are relatively simple, and manual opening or closing can be achieved by pinching with hands or pushing with tweezers.

[0041] When the airbag cup enters the digestive tract, it is first inflated to properly expand the cup mouth airbag 5, the support airbag 6 and the clamping airbag 7. The clamping airbag 7 is made of flexible rubber or latex material, expands after being inflated, and can continue to expand as the inflation pressure increases. When the airbag cup enters the digestive tract, the clamping airbag 7 is appropriately inflated to a certain size. Figure 2 If the inflation and pressure continue, it can expand to Figure 3 The cup mouth airbag 5 and the support airbag 6 are inflated to the state shown. Figure 2 It will not expand further after the state shown.

[0042] When the airbag cup expands to Figure 2 After the state shown, the positive and negative pressure air pump 2 is switched to the suction state, at which time the positive pressure valve 11 is closed and the negative pressure valve 9 is opened, so as to absorb the foreign matter 21. Of course, before the positive and negative pressure air pump 2 is switched to the suction state, the cup mouth airbag 5 should have been expanded and is near the foreign matter 21, or the foreign matter 21 has partially or completely entered the interior of the airbag cup.

[0043] When the foreign body 21 is sucked into the airbag cup or cup body 4, the positive and negative pressure air pumps are switched to the inflation state, so that the clamping airbag 7 is further expanded to Figure 3 In the state shown, the foreign body 21 is clamped and wrapped. In this process, the positive and negative pressure air pumps can be switched alternately between the inflation state and the suction state. After the clamping airbag 7 wraps or clamps the foreign body 21, the positive and negative pressure air pumps are switched to the suction state again, so that the clamping airbag 7 further wraps the foreign body 21, and in this process, the suction pressure can be increased, so that the membrane structure 3 also tightens and wraps the foreign body 21, and the foreign body 21 and the airbag cup are gathered as a whole, and then the foreign body 21 is dragged until the foreign body 21 is taken out. Due to the wrapping and clamping effect of the clamping airbag 7 and the membrane structure 3, the foreign body 21 is difficult to fall or fall off, and will not scratch the digestive tract. And because the foreign body 21 is pre-fixed by negative pressure adsorption, compared with the traditional clamp or tweezers to clamp the foreign body 21, the cup mouth airbag 5 does not need to extend between the foreign body 21 and the inner wall of the digestive tract, and the cup mouth airbag 5 is a flexible structure, which will not accidentally injure the digestive tract during operation, which is safer and more efficient. When clamping the foreign body 21 with conventional clamps or tweezers, the digestive tract may be pierced or scratched due to operating errors.

[0044] The surface of the clamping airbag 7 is provided with protrusions and depressions, the protrusions may be protrusions, the depressions may be grooves, and a plurality of protrusions and depressions are arrayed on the surface of the clamping airbag 7. The friction between the clamping airbag 7 and the foreign body 21 or the biopsy tissue is increased to prevent the foreign body 21 or the biopsy assembly from falling off. The protrusions may also be spikes that can penetrate into the foreign body 21 or the biopsy tissue.

[0045] In order to make the airbag cup in the contracted state expand quickly and open the cup mouth airbag 5, the two support airbags 6 of this embodiment are respectively configured with a contraction type expansion component; the contraction type expansion component includes a flexible expansion wire 12 and a piston plate 13 and a magnetic plate 14 respectively connected to the two ends of the expansion wire 12; the expansion wire 12 is a flexible thin copper wire, one end of which is located in the support airbag 6 and the other end is located in the cup mouth airbag 5. When one end is subjected to axial pressure, it will move axially toward the other end. At the same time, the bending part of the expansion wire 12 will change, and the bending part is always at the junction of the support airbag 6 and the cup mouth airbag 5.

[0046] The piston plate 13 is arranged in the supporting airbag 6, and the outer edge of the piston plate 13 is arranged close to the inner wall of the supporting airbag 6; a part of the expanding metal wire 12 is located in the supporting airbag 6, and the other part is located in the cup mouth airbag 5; the magnetic suction plate 14 is arranged in the cup mouth airbag 5; when the positive pressure valve 11 is opened, the magnetic suction plates 14 of the two relatively arranged contraction expanding components are brought close to each other until they are sucked tightly.

[0047] When the positive pressure valve 11 is opened, high-pressure air enters the side wall airway of the support airbag 6, squeezing the piston plate 13. The piston plate 13 is pushed upward and gradually rises in the side wall airway, while the flared wire 12 gradually moves from the side wall airway to the cup mouth airway of the cup mouth airbag 5, and the two magnetic suction plates 14 of the two contraction flaring components gradually move closer until they are attracted and fixed. At this time, the piston plate 13 at the other end of the flared wire 12 is just at the top of the support airbag 6. At this time, the height of the piston plate 13 is higher than the height of the through hole 20 connecting the support airbag 6 and the clamping airbag 7. Under the restriction of the piston plate 13, the air entering the side wall airway can enter the clamping airbag 7 through the through hole 20. Since the support airbag 6 is a flexible structure, the edge of the piston plate 13 cannot be completely sealed with the inner wall of the support airbag 6. Therefore, when the piston plate 13 is lifted by most of the air pressure, a small amount of air overflows from the gap between the piston plate 13 and the inner wall of the support airbag 6 into the cup mouth airbag 5, thereby expanding the cup mouth airbag 5 and opening the cup mouth of the airbag cup.

[0048] In order to prevent the piston plate 13 from entering the cup mouth airbag 5, or to prevent the magnetic suction plate 14 from entering the support airbag 6, a limit ring 15 is provided at a position of the cup mouth airbag 5 close to the support airbag 6, and the expanded metal wire 12 passes through the limit ring 15. When the piston plate 13 is pushed upward, the expanded metal wire 12 is pushed upward. After the expanded metal wire 12 encounters the limit ring 15, the force direction is changed and it bends at the limit ring 15, thereby moving in the cup mouth airbag 5. The inner wall of the limit ring 15 is provided with a conical inclined surface or a curved surface to better guide the expanded metal wire 12 to bend.

[0049] After the two expanding wires 12 of the two contraction expanding components are attracted to each other through the magnetic attraction sheet 14, the length of the two expanding wires 12 is half of the circumference of the cup mouth airbag 5, which provides effective support for the cup mouth of the airbag cup and can also open the cup mouth airbag 5 to avoid excessive collapse.

[0050] When the airbag cup is in Figure 1 In the contracted state shown, most of the expanded metal wire 12 is in the supporting airbag 6, which can provide effective support for the airbag cup to remain upright. When the airbag cup moves in the digestive tract, it prevents the airbag cup from changing its direction due to the bending of the cup mouth, which affects the expanded state and further affects the operating efficiency.

[0051] like Figure 4 , Figure 5 As shown, the inner wall of the cup body 4 corresponding to the air inlet 8 is provided with a concave water storage groove 16. The water storage groove 16 is an annular structure, and the air inlet 8 is located on the inner side of the annular structure. When inhaling, the digestive tract mucus on the inner wall of the airbag cup and the inner wall of the cup body 4 will flow into the water storage groove 16, and the edge of the notch of the water storage groove 16 away from the inner wall of the cup body 4 is provided with a curved anti-overflow sheet 17, the height of the anti-overflow sheet 17 is higher than the top height of the water storage groove 16, and the end of the anti-overflow sheet 17 is bent toward the inside or bottom of the water storage groove 16, so that the digestive tract mucus in the water storage groove 16 flowing down from the inner wall of the airbag cup and the inner wall of the cup body 4 is difficult to escape from the water storage groove 16 under the action of negative pressure.

[0052] In order to prevent the main air pipe 1 from being blocked, a horizontal filter screen 18 is provided at the position where the lower end of the cup body 4 communicates with the main air pipe 1 .

[0053] A plurality of spikes 19 are distributed on the upper end of the filter 18, and the spikes 19 are provided with barb structures. When the foreign body 21 or the biopsy tissue is partially pressed against the filter 18 under the negative pressure and pierced by the spikes 19, the foreign body 21 or the biopsy assembly is difficult to separate from the filter 18 under the action of the barb structure, which further prevents the foreign body 21 from falling during the removal process, thereby improving the removal effect of the foreign body 21.

[0054] Based on the same inventive concept, the present invention also proposes a method for manufacturing the above-mentioned foreign body 21 removal device for gastroenterology, comprising the following steps:

[0055] A plurality of inflation ports 10 are provided on the side wall of the cup body 4, and a positive pressure valve 11 is installed at each inflation port 10; an air intake port 8 is provided at the upper end of the cup body 4, and a negative pressure valve 9 is installed at the air intake port 8; a hole is opened at the lower end of the cup body 4 to connect with the main air pipe 1; the positive pressure valve 11 and the negative pressure valve 9 are installed by hinge installation.

[0056] According to the number and position of the inflation ports 10, the support airbag 6 is installed, one support airbag 6 is installed at each inflation port 10, and all the support airbags 6 are connected to the cup mouth airbag 5; the support airbag 6 is bonded to the inflation port 10, and the shrinkage expansion assembly is placed in the support airbag 6, and one end of the expansion wire 12 of the shrinkage expansion assembly passes through the limit ring 15 and the magnetic sheet 14 in sequence, and the other end is connected to the piston sheet 13, and the piston sheet 13 is in the support airbag 6, and the magnetic ring and the limit ring 15 are placed in the cup mouth airbag 5, and the limit ring 15 is bonded and fixed to the cup mouth airbag 5, and the position of the expansion wire 12 is adjusted so that it is partially located in the support airbag 6 and partially located in the cup mouth airbag 5. Finally, the upper end of the support airbag 6 is bonded to the cup mouth airbag 5 to ensure that the side wall airway is connected to the cup mouth airway.

[0057] The clamping airbag 7 is connected to the supporting airbag 6, and they are bonded and fixed to complete the assembly of the airbag cup frame.

[0058] The membrane structure 3 is sealed and wrapped around the side wall of the airbag cup frame. The membrane structure 3 is bonded and fixed to the supporting airbag 6 and the cup mouth airbag 5. The bottom of the membrane structure 3 surrounds the main air pipe 1 and is bonded and fixed. The assembly of the airbag cup is completed.

[0059] Finally, the main airway 1 is passed through the instrument channel on the body of the electronic endoscope and connected to the positive and negative pressure air pumps 2.

[0060] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A foreign body removal device for gastroenterology, characterized in that: include: A main air pipe and an airbag cup and a positive and negative pressure air pump respectively connected to the two ends of the main air pipe; the positive and negative pressure air pumps are used to inflate or inhale air into the main air pipe; the airbag cup includes an airbag cup frame and a membrane structure sealingly coated on the side wall of the airbag cup frame; the airbag cup frame includes a cup body, a cup mouth airbag, a supporting airbag, and a clamping airbag; an air suction port is provided at the upper end of the cup body, and the lower end is connected to the main air pipe, and at least two opposite side ends of the cup body are respectively provided with an inflation port; the air suction port and the inflation port are both connected to the main air pipe; the air suction port is provided with a negative pressure valve, and the negative pressure valve It only opens when the positive and negative pressure air pumps are inhaling; the inflation port is provided with a positive pressure valve, and the positive pressure valve only opens when the positive and negative pressure air pumps are inflating; the cup mouth airbag is a hollow annular structure, a cup mouth airway is provided inside it, and the cup mouth airbags are spaced above the cup body; the support airbag is supported between the cup mouth airbag and the cup body, and a side wall airway is provided inside the support airbag; each of the inflation ports is connected to a support airbag, and the support airbag is also connected to the cup mouth airbag; each of the support airbags is connected to the clamping airbag on the inner side of the membrane structure.

2. A foreign body removal device for gastroenterology according to claim 1, characterized in that: The airbag cup frame also includes a shrinkable expansion component; each support airbag is equipped with a shrinkable expansion component; the shrinkable expansion component includes a flexible expansion wire and a piston plate and a magnetic plate respectively connected to the two ends of the expansion wire; the piston plate is arranged in the support airbag, and the outer edge of the piston plate is arranged against the inner wall of the support airbag; a part of the expansion wire is located in the support airbag, and the other part is located in the cup mouth airbag; the magnetic plate is arranged in the cup mouth airbag; when the positive pressure valve is opened, the magnetic plates of the two shrinkable expansion components arranged opposite to each other are brought close to each other until they are sucked tightly.

3. A foreign body removal device for gastroenterology according to claim 2, characterized in that: The shrinkable expansion component also includes a limiting ring; the limiting ring is arranged in the cup mouth airbag and close to the supporting airbag, and the expansion wire passes through the limiting ring; the inner diameter of the limiting ring is smaller than the outer diameter of the magnetic suction sheet.

4. A foreign body removal device for gastroenterology according to claim 1, characterized in that: The inner wall of the cup body corresponding to the air inlet is provided with a concave water storage tank.

5. A foreign body removal device for gastroenterology according to claim 4, characterized in that: The water storage tank is an annular structure, and the air inlet is located at the inner side of the annular structure.

6. A foreign body removal device for gastroenterology according to claim 1, characterized in that: A horizontal filter screen is arranged at a position where the lower end of the cup body is in communication with the main air pipe.

7. A foreign body removal device for gastroenterology according to claim 6, characterized in that: A plurality of spikes are distributed on the upper end of the filter screen, and the spikes are provided with barb structures.

8. The foreign body removal device for gastroenterology according to claim 1, characterized in that: The inner side of the supporting airbag is provided with a plurality of through holes communicating with the clamping airbag at intervals along the height direction thereof.

9. The foreign body removal device for gastroenterology according to claim 1, characterized in that: The surface of the clamping airbag is provided with protrusions and depressions.

10. A method for manufacturing the foreign body removal device for gastroenterology as claimed in claim 1, characterized in that: The following steps are involved: A plurality of inflation ports are provided on the side wall of the cup body, and a positive pressure valve is installed at each inflation port; an air inlet is provided at the upper end of the cup body, and a negative pressure valve is installed at the air inlet; a hole is opened at the lower end of the cup body to communicate with the main air pipe; According to the number and position of the inflation ports, support airbags are installed, one support airbag is installed at each inflation port, and all the support airbags are connected to the cup mouth airbag; Connecting the clamping airbag with the supporting airbag to complete the assembly of the airbag cup frame; The membrane structure is sealed and wrapped around the side wall of the airbag cup frame.

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