CN112545626B

CN112545626B - Foreign matter forceps for department of gastroenterology that prevents foreign matter from droing

Info

Publication number: CN112545626B
Application number: CN202011400310.4A
Authority: CN
Inventors: 杨雷
Original assignee: Taixing Zhiyuan Intellectual Property Service Co ltd
Current assignee: Taixing Zhiyuan Intellectual Property Service Co ltd
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2022-08-09
Anticipated expiration: 2038-08-02
Also published as: CN112545626A; CN109157275A; CN109157275B

Abstract

The invention discloses foreign matter forceps for a gastroenterology, which comprise an insertion tube, wherein the front side and the rear side of the top end of the insertion tube are fixedly connected with fixing plates, a fixing shaft is fixedly connected between the two fixing plates, clamping jaws are sleeved on the surface of the fixing shaft, the two clamping jaws are arranged, the bottoms of the two clamping jaws are communicated with rotating rods, the bottom ends of the rotating rods extend into the insertion tube, and the bottoms of the rotating rods are communicated with thin pull tubes. This prevent foreign matter pincers for gastroenterology that foreign matter drops, through the pulling ring alright utilize the lantern ring to stimulate thin trombone slide, and the indirect clamping jaw that stimulates of usable dwang carries out the centre gripping to the foreign matter, and utilize the cooperation of bolt and draw-in groove to fix thin trombone slide after pressing from both sides tight foreign matter, can avoid thin trombone slide not hard up when taking out the foreign matter and lead to the centre gripping not hard up, the injury that the secondary centre gripping led to the fact to deciding the people has also been avoided, and need not to hold thin trombone slide all the time when pulling out the foreign matter, alone alright accomplish the operation, easy operation is convenient.

Description

Foreign matter forceps for department of gastroenterology that prevents foreign matter from droing

The patent application is a divisional application, the application number of a parent application is 2018108684267, and the application date of the parent application is 2018, 08 and 02.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a foreign body forceps for a digestive system, which can prevent foreign bodies from falling off.

Background

Medical instruments refer to instruments, devices, appliances, in-vitro diagnostic reagents and calibrators, materials and other similar or related items used directly or indirectly on the human body, including the required computer software. The effects are obtained mainly by physical means, not by pharmacological, immunological or metabolic means, or they are involved but only as an aid. For the purpose of diagnosis, prevention, monitoring, treatment, or amelioration of a disease; diagnosis, monitoring, treatment, mitigation, or functional compensation of injury; examination, replacement, regulation or support of a physiological structure or physiological process; support or maintenance of life; controlling pregnancy; by examining a sample from a human body, information is provided for medical or diagnostic purposes. The medical appliance industry relates to a plurality of industries such as medicine, machinery, electronics, plastics and the like, and is a high-technology industry with multidisciplinary intersection, knowledge concentration and fund concentration. The basic characteristic of the medical equipment with high and new technology is digitalization and computerization, is the multidisciplinary and cross-field modern high-technology crystal, and has high technical content and high profit, so the equipment is a high-level system for mutual competition of all scientific and technological countries and international large-scale companies, and has higher intervention threshold.

The digestive system department is the clinical third-level subject which mainly studies diseases of esophagus, stomach, small intestine, large intestine, liver, gallbladder and pancreas, etc. The digestive system diseases are various, the medical knowledge is wide, and the operation is complex and fine. Digestive diseases are divided into 5 parts of gastroenteropathy, liver disease, pancreatic and biliary diseases, endoscopy and other diseases. The foreign body forceps are medical instruments commonly used in the department of gastroenterology, and are mainly used for assisting a doctor to take out foreign bodies from digestive organs of a patient and assisting the doctor to examine the inside of the digestive organs of the patient.

Present foreign matter pincers are through the fine rule pulling foreign matter pincers that extend, and then the clamp of control foreign matter pincers is tight, when taking out the foreign matter, the fine rule need tightly be held to whole journey, it presss from both sides the foreign matter to keep, the action needs slowly when taking out, the time is longer, and then the pulling fine rule is more strenuous, if there is some not hard up just can lead to the foreign matter to drop, need once more again, patient's burden has been aggravated, probably cause secondary damage, and the foreign matter pincers are inconvenient to open through fine rule control, generally utilize the spring to strut, but under the extrusion of viscera, the foreign matter pincers are difficult for opening great angle.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides foreign body forceps for a digestive system, which can prevent foreign bodies from falling off, and solves the problems that the operation of pulling a thin wire in the whole process is too laborious, the foreign bodies are easy to fall off, and the foreign body forceps are not easy to open at a large angle under the extrusion of internal organs.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: foreign matter forceps for department of gastroenterology that prevents foreign matter from coming off, including the intubate, both sides all fixedly connected with stationary blade around the intubate top, two fixedly connected with fixed axle between the stationary blade, the surface cover of fixed axle is equipped with the clamping jaw, the clamping jaw is provided with two, two the bottom of clamping jaw all communicates there is the dwang, and the bottom of dwang extends to the inside of intubate, the bottom intercommunication of dwang has thin trombone slide, two the inside of clamping jaw all sets up the cavity, and the top sliding connection of cavity has the slider, one side fixedly connected with thimble of slider, the top of two the opposite side of clamping jaw all sets up the through-hole that suits with the thimble, its below fixedly connected with backing sheet that is located the dwang in the inside of intubate, the one end intercommunication that the intubate was kept away from the stationary blade has a section of thick bamboo of gripping, the one end that thin trombone slide kept away from the dwang runs through backing sheet and a section of thick bamboo in proper order and extends to the outside of a section of gripping section of thick bamboo, the outside cover that grips a section of thick bamboo is equipped with the lantern ring, and thin trombone slide is located the top intercommunication that grips an outside one end and the lantern ring of a section of thick bamboo, the equal fixedly connected with elastic strip in the left and right sides of lantern ring bottom, and the elastic strip keeps away from the one side fixedly connected with ring that grips a section of thick bamboo, the elastic strip is close to the bottom fixedly connected with bolt that grips a section of thick bamboo one side, and grips the both sides of a section of thick bamboo inner wall and all set up the draw-in groove with bolt looks adaptation.

Preferably, the ring cavity is opened in the lantern ring, the left side of the lantern ring is communicated with a first inflation tube, and one end of the first inflation tube, which is far away from the lantern ring, is communicated with a first air bag.

Preferably, the front of dwang just is located the inside fixedly connected with fixed block of intubate, two the equal fixedly connected with of one side that the fixed block is relative is flexible, two the intercommunication has the second gas tube between the one end that flexible pipe is relative.

Preferably, one end of the second inflation tube, which is far away from the telescopic tube, sequentially penetrates through the support sheet and the holding cylinder and extends to the outside of the holding cylinder, and one end of the second inflation tube, which is positioned outside the holding cylinder, is communicated with a second air bag.

Preferably, the top on the surface of the fixed shaft is positioned between the clamping jaws and is fixedly connected with a lens through a fixed sleeve, the bottom of the lens is fixedly connected with a power line, and one end, far away from the lens, of the power line penetrates through the supporting sheet and extends to the inside of the holding cylinder.

Preferably, the bottom end of the holding cylinder is fixedly connected with a baffle, the right wall of the holding cylinder is fixedly connected with a joint, and the left end of the joint is positioned inside the holding cylinder and is fixedly connected with one end of the power line.

Preferably, the inside swing joint of second gasbag has the bracing piece, the fixed surface of bracing piece is connected with the fixed short column, the surface cover of fixed short column is equipped with the return spring, and the one end of return spring is connected with the fixed surface of bracing piece.

Preferably, the inner surface of the insertion tube is fixedly connected with a positioning ring, and the positioning ring is sleeved outside the thin pull tube.

(III) advantageous effects

The invention provides a foreign body forceps for a digestive system, which can prevent foreign bodies from falling off. Compared with the prior art, the method has the following beneficial effects:

(1) the foreign matter forceps for the gastroenterology for preventing the foreign matter from falling comprises a rotating rod, wherein the bottoms of two clamping jaws are communicated with each other, the bottom end of the rotating rod extends into an insertion tube, a thin pull tube is communicated with the bottom of the rotating rod, a lantern ring is sleeved outside a holding cylinder, one end, positioned outside the holding cylinder, of the thin pull tube is communicated with the top of the lantern ring, elastic strips are fixedly connected to the left side and the right side of the bottom of the lantern ring, one side, away from the holding cylinder, of each elastic strip is fixedly connected with a finger ring, the bottom, close to one side of the holding cylinder, of each elastic strip is fixedly connected with a bolt, clamping grooves matched with the bolts are formed in the two sides of the inner wall of the holding cylinder, the thin pull tube can be pulled by the lantern rings through pulling of the finger rings, the foreign matter can be clamped by the aid of the rotating rods, the thin pull tube can be fixed after the foreign matter is clamped by the aid of the bolts matched with the clamping grooves, and loosening of the thin pull tube caused by taking out the foreign matter can be avoided, the damage to a fixed person caused by secondary clamping is avoided, the thin pull pipe does not need to be pulled all the time when the foreign body is pulled out, the operation can be completed by one person, and the operation is simple and convenient.

(2) This prevent foreign matter pincers for gastroenterology that foreign matter drops, the cavity has all been seted up through the inside at two clamping jaws, and the top sliding connection of cavity has the slider, one side fixedly connected with thimble of slider, the through-hole with thimble looks adaptation is all seted up at the top of the relative one side of two clamping jaws, the ring chamber has been seted up to the inside of the lantern ring, the left side intercommunication of the lantern ring has first gas tube, and the one end intercommunication that the lantern ring was kept away from to first gas tube has first gasbag, to the foreign matter of soft materials such as rubber, first gasbag makes the thin trombone slide fill gas in to the cavity is mediated to the accessible, make the slider release the thimble, and then supplementary centre gripping foreign matter, make the more firm of foreign matter centre gripping.

(3) The foreign body forceps for the gastroenterology for preventing the foreign bodies from falling off is characterized in that fixed blocks are fixedly connected to the front side of the rotating rod and the inner part of the insertion tube, telescopic tubes are fixedly connected to the opposite sides of the two fixed blocks, a second inflation tube is communicated between the opposite ends of the two telescopic tubes, one end, far away from the telescopic tubes, of the second inflation tube sequentially penetrates through the supporting sheet and the holding cylinder and extends to the outer part of the holding cylinder, one end, located at the outer part of the holding cylinder, of the second inflation tube is communicated with a second air bag, air can be inflated or pumped out of the telescopic tubes through the cooperation of the second air bag and the second inflation tube, the telescopic tubes can be further stretched and contracted, the rotating rod and the clamping jaws can be pushed to open through the fixed blocks during stretching, the opening force is large, the problem that the clamping jaws are not easy to open at a large angle due to extrusion in vivo can be avoided, certain clamping force can be generated by the clamping jaws when the telescopic tubes are contracted, and the tubes can be assisted to clamp the thin tubes, further guarantee the firm of centre gripping, the flexible operation is convenient, and is functional strong.

(4) This prevent foreign matter pincers for gastroenterology that foreign matter drops, there is the bracing piece through the inside swing joint at the second gasbag, the fixed surface of bracing piece is connected with the fixed short column, the surperficial cover of fixed short column is equipped with the return spring, and the one end of return spring is connected with the fixed surface of bracing piece, through the elasticity of return spring, can kick-back rapidly and then prop open the second gasbag after loosening the second gasbag, the elasticity of return spring can provide some clamping-force of clamping jaw, high durability and convenient use.

Drawings

FIG. 1 is a partial cross-sectional view of a jaw and cannula of the present invention.

Fig. 2 is a front view of the internal structure of the grip barrel of the present invention.

Fig. 3 is a rear view of the external structure of the grip barrel of the present invention.

Figure 4 is a side view of the fixed shaft and jaw arrangement of the present invention.

FIG. 5 is a schematic diagram of the structure of the cavity and the slider according to the present invention.

FIG. 6 is a schematic view showing the internal structure of a second airbag according to the present invention.

In the figure, 1-intubation tube, 2-fixing plate, 3-fixing shaft, 4-clamping jaw, 5-rotating rod, 6-thin pull tube, 7-cavity, 8-slide block, 9-thimble, 10-supporting plate, 11-holding tube, 12-lantern ring, 13-elastic strip, 14-finger ring, 15-bolt, 16-neck, 17-ring cavity, 18-first inflation tube, 19-first air bag, 20-fixing block, 21-extension tube, 22-second air bag, 23-lens, 24-power line, 25-baffle, 26-joint, 27-supporting rod, 28-fixing short column, 29-return spring, 30-positioning ring and 31-second inflation tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention provides a technical solution: foreign matter forceps for digestive system department for preventing foreign matter from falling off comprises an insertion tube 1, wherein the insertion tube 1 is a hose and can be bent at will, a positioning ring 30 is fixedly connected to the inner surface of the insertion tube 1, the positioning ring 30 is sleeved outside a thin pull tube 6, the thin pull tube 6 and the positioning ring 30 can slide mutually, the positioning ring 30 can position the thin pull tube 6 in the insertion tube 1 to prevent the thin pull tube 6 from being scattered and wound at will, fixing plates 2 are fixedly connected to the front side and the rear side of the top end of the insertion tube 1, a fixing shaft 3 is fixedly connected between the two fixing plates 2, a lens 23 is fixedly connected to the top of the surface of the fixing shaft 3 and positioned between clamping jaws 4 through a fixing sleeve, the lens 23 is a medical endoscope, a power line 24 is fixedly connected to the bottom of the lens 23, one end, away from the lens 23, penetrates through a supporting sheet 10 and extends into a holding barrel 11, the clamping jaws 4 are sleeved on the surface of the fixing shaft 3, the clamping jaws 4 can rotate relative to the fixed shaft 3, two clamping jaws 4 are arranged, the bottoms of the two clamping jaws 4 are communicated with a rotating rod 5, the bottom end of the rotating rod 5 extends into the insertion tube 1, the front surface of the rotating rod 5 and the inner part of the insertion tube 1 are fixedly connected with fixed blocks 20, one sides of the two fixed blocks 20 opposite to each other are fixedly connected with telescopic tubes 21, a second inflation tube 31 is communicated between the two opposite ends of the telescopic tubes 21, one end, far away from the telescopic tubes 21, of the second inflation tube 31 sequentially penetrates through the supporting sheet 10 and the holding tube 11 and extends to the outer part of the holding tube 11, one end, located outside the holding tube 11, of the second inflation tube 31 is communicated with a second air bag 22, the second air bag 22 is matched with the second inflation tube 31, air can be inflated into or extracted from the telescopic tubes 21, so that the telescopic tubes can be stretched, the rotating rod 5 and the clamping jaws 4 can be pushed to open through the fixed blocks 20 when being stretched, the expansion force is large, the problem that the expansion is difficult to be performed at a large angle due to extrusion in a body can be avoided, when the extension tube 21 contracts, the clamping jaw 4 can generate a certain clamping force to assist the thin pull tube 6 to clamp, the clamping is further ensured to be firm, the operation is flexible and convenient, the functionality is strong, the inner part of the second air bag 22 is movably connected with the supporting rod 27, the surface of the supporting rod 27 is fixedly connected with the fixing short column 28, the surface of the fixing short column 28 is sleeved with the return spring 29, one end of the return spring 29 is fixedly connected with the surface of the supporting rod 27, the second air bag 22 can be rapidly rebounded through the elastic force of the return spring 29 after the second air bag 22 is loosened, the elastic force of the return spring 29 can provide a part of the clamping force of the clamping jaw 4, the use is convenient, the bottom of the rotating rod 5 is communicated with the thin pull tube 6, the part of the thin pull tube 6, which is positioned above the supporting sheet 10, is arranged in a crossed manner, when the thin pull tube 6 is pulled, the two clamping jaws 4 are in a clamping state, cavities 7 are formed in the two clamping jaws 4, a sliding block 8 is connected to the top of each cavity 7 in a sliding manner, an ejector pin 9 is fixedly connected to one side of each sliding block 8, through holes matched with the ejector pin 9 are formed in the top of the opposite side of each clamping jaw 4, a supporting sheet 10 is fixedly connected to the lower portion of the rotating rod 5 in the insertion tube 1, the supporting sheet 10 is used for supporting one end of the insertion tube 1 and limiting the thin pull tube 6 to keep the thin pull tube in a crossed state and well slide with the thin pull tube 6, one end, away from the fixing sheet 2, of the insertion tube 1 is communicated with a holding tube 11, a baffle 25 is fixedly connected to the bottom end of the holding tube 11, a connector 26 is fixedly connected to the right wall of the holding tube 11, the left end, located in the holding tube 11, of the connector 26 is fixedly connected to one end of the power line 24, one end, away from the rotating rod 5, of the thin pull tube 6 sequentially penetrates through the supporting sheet 10 and the holding tube 11 and extends to the outside of the holding tube 11, the outer part of the holding cylinder 11 is sleeved with a lantern ring 12, the lantern ring 12 can keep two elastic strips 13 to rise synchronously, the interior of the lantern ring 12 is provided with a ring cavity 17, the ring cavity 17 is arranged to enable air filled in a first air filling pipe 18 to enter two thin pull pipes 6, the left side of the lantern ring 12 is communicated with the first air filling pipe 18, one end, away from the lantern ring 12, of the first air filling pipe 18 is communicated with a first air bag 19, for foreign matters made of soft materials such as rubber and the like, the thin pull pipes 6 can be inflated into the cavity 7 by kneading the first air bag 19, a sliding block 8 pushes out a thimble 9 to assist in clamping the foreign matters, so that the foreign matters are clamped more firmly, one end, located outside the holding cylinder 11, of the thin pull pipes 6 is communicated with the top of the lantern ring 12, the left side and the right side of the bottom of the lantern ring 12 are fixedly connected with the elastic strips 13, one side, away from the holding cylinder 11, is fixedly connected with a ring 14, and the ring 14 is matched with the thickness of fingers of an adult, the elastic strip 13 is close to the bottom fixedly connected with bolt 15 that grips a section of thick bamboo 11 one side, and the draw-in groove 16 with 15 looks adaptations is all seted up to the both sides that grip an 11 inner wall, draw-in groove 16 is provided with a plurality ofly, adapt to different tight degrees of clamp, through pulling ring 14 alright utilize lantern ring 12 pulling tubule 6, and usable dwang 5 indirectly stimulates clamping jaw 4 and carries out the centre gripping to the foreign matter, and utilize the cooperation of bolt 15 and draw-in groove 16 can fix tubule 6 after pressing from both sides tight foreign matter, can avoid tubule 6 not hard up and lead to the centre gripping not hard up when taking out the foreign matter, the injury that the secondary centre gripping caused to deciding the people has also been avoided, and need not to hold tubule 6 all the time when pulling out the foreign matter, alone alright accomplish the operation, easy operation is convenient.

When in use, the external gastroscope is connected into the connector 26 by a display plug, the holding cylinder 11 is held by a hand, fingers are inserted into the finger ring 14, then the clamping jaw 4 and the front end of the insertion tube 1 are inserted into the body of a patient, the position of a foreign body is found by the lens 23, the insertion tube 1 is controlled after the foreign body is found to move the clamping jaw 4 to the position of the foreign body, the second air bag 22 is pinched, air in the second air bag is squeezed into the extension tube 21 through the second inflation tube 31, the extension tube 21 is extended, the rotating rod 5 is pushed by the fixing block 20 to expand the two clamping jaws 4, then the foreign body is clamped by the forward pushing, the second air bag 22 is released, the finger ring 14 is pulled, the return spring 29 in the second air bag 22 is extended to support the second air bag 22, the air is sucked again to contract the extension tube 21, the clamping jaw 4 is combined to clamp the foreign body, the finger ring 14 and the thin extension tube 6 is pulled by the elastic strip 13 and the lantern ring 12, make its pulling dwang 5, and then make clamping jaw 4 press from both sides tight foreign matter completely, impel chucking in next draw-in groove 16 with bolt 15 again, can slowly stimulate intubate 1 this moment, take out the foreign matter, if the foreign matter is softer material article such as rubber, still can pinch first gasbag 19 when pressing from both sides tightly, fill the air into cavity 7 of clamping jaw 4 through first gas tube 18, ring chamber 17, thin trombone 6 and dwang 5 in, promote slider 8 and slide, push up thimble 9 and make it prick further to press from both sides in the foreign matter.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Prevent foreign matter pincers for gastroenterology that foreign matter drops, including intubate (1), its characterized in that: the utility model discloses an intubate (1) top both sides all fixedly connected with stationary blade (2) around, two fixedly connected with fixed axle (3) between stationary blade (2), the surface cover of fixed axle (3) is equipped with clamping jaw (4), clamping jaw (4) are provided with two, two the bottom of clamping jaw (4) all communicates dwang (5), and the bottom of dwang (5) extends to the inside of intubate (1), the bottom intercommunication of dwang (5) has thin trombone slide (6), two cavity (7) have all been seted up to the inside of clamping jaw (4), and the top sliding connection of cavity (7) has slider (8), one side fixedly connected with thimble (9) of slider (8), two the through-hole with thimble (9) looks adaptation is all seted up at the top of the relative one side of clamping jaw (4), inside its below fixedly connected with backing sheet (10) that is located dwang (5) of intubate (1), the one end intercommunication that stationary blade (2) were kept away from to intubate (1) has a section of thick bamboo (11) of gripping, the one end that dwang (5) were kept away from to thin trombone slide (6) runs through in proper order backing sheet (10) and a section of thick bamboo (11) of gripping and extends to the outside of a section of thick bamboo (11) of gripping, the outside cover of a section of thick bamboo (11) of gripping is equipped with lantern ring (12), and thin trombone slide (6) are located the one end of a section of thick bamboo (11) outside of gripping and the top intercommunication of lantern ring (12), the equal fixedly connected with elastic strip (13) of the left and right sides of lantern ring (12) bottom, and elastic strip (13) keep away from one side fixedly connected with ring (14) of a section of thick bamboo (11) of gripping, elastic strip (13) are close to the bottom fixedly connected with bolt (15) of a section of thick bamboo (11) one side of gripping, and the draw-in groove (16) with bolt (15) looks adaptation is all seted up to the both sides of a section of thick bamboo (11) of gripping, the inside of lantern ring (12) is seted up ring chamber (17), the left side intercommunication of the lantern ring (12) has first gas tube (18), and the one end intercommunication that lantern ring (12) were kept away from in first gas tube (18) has first gasbag (19), the top on fixed axle (3) surface just is located through fixed cover fixedly connected with camera lens (23) between clamping jaw (4), bottom fixedly connected with power cord (24) of camera lens (23), the one end that camera lens (23) were kept away from in power cord (24) runs through backing sheet (10) and extends to the inside of gripping a section of thick bamboo (11), the bottom fixedly connected with baffle (25) of gripping a section of thick bamboo (11), the right wall fixedly connected with of gripping a section of thick bamboo (11) connects (26), the left end that connects (26) just is located the one end fixed connection who grips the inside of a section of thick bamboo (11) and power cord (24).

2. The foreign body forceps for department of gastroenterology that prevents foreign body from falling off according to claim 1, characterized in that: the front of dwang (5) just is located inside fixedly connected with fixed block (20), two of intubate (1) the equal fixedly connected with in one side that fixed block (20) is relative is flexible pipe (21), two the intercommunication has second gas tube (31) between the one end that flexible pipe (21) is relative.

3. The foreign body forceps for department of gastroenterology that prevents foreign body from falling off according to claim 2, characterized in that: one end of the second inflation tube (31) far away from the extension tube (21) sequentially penetrates through the support sheet (10) and the holding tube (11) and extends to the outside of the holding tube (11), and one end, located outside the holding tube (11), of the second inflation tube (31) is communicated with a second air bag (22).

4. The foreign body forceps for department of gastroenterology that prevents foreign body from falling off according to claim 3, characterized in that: the inside swing joint of second gasbag (22) has bracing piece (27), the fixed surface of bracing piece (27) is connected with fixed short column (28), the surperficial cover of fixed short column (28) is equipped with return spring (29), and the fixed surface of one end and bracing piece (27) of return spring (29) is connected.

5. The foreign body forceps for department of gastroenterology that prevents foreign body from falling off according to claim 1, characterized in that: the inner surface of the insertion pipe (1) is fixedly connected with a positioning ring (30), and the positioning ring (30) is sleeved outside the thin pull pipe (6).