CN113069069A

CN113069069A - Gastroscope of adjustable front end angle

Info

Publication number: CN113069069A
Application number: CN202110409683.6A
Authority: CN
Inventors: 章雁; 许树长; 陈莹; 孙会会; 熊杰; 陈烨
Original assignee: Shanghai Tongji Hospital
Current assignee: Shanghai Tongji Hospital
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-07-06

Abstract

The invention provides a gastroscope with an adjustable front end angle, and belongs to the technical field of medical instruments. It has solved the limited scheduling problem of current gastroscope hose front end angle direction of rotation. The inflatable self-inflating device comprises a body, wherein at least 8 inflatable parts are fixedly arranged on the periphery of the body, the inflatable parts are sequentially and uniformly arranged along the circumferential direction of the body, one end of each inflatable part is close to the front end of the body, the other end of each inflatable part extends along the extending direction of the body, the end of each inflatable part is connected with an inflation pipeline, each inflation pipeline is connected with an inflation device through a transposition assembly, each inflation part can be inflated independently through the inflation device through the transposition assembly, the inflation parts can be elastically extended in the inflation process, the transposition assembly comprises a butt joint part and a rotating part which are concentrically arranged, the rotating part can concentrically rotate relative to the butt joint part, and the inflation ports can be sequentially communicated with the air inlets in the rotation process of. The invention has the advantages that the front end of the gastroscope can be bent towards all directions through inflation, and the inflation operation is convenient.

Description

Gastroscope of adjustable front end angle

Technical Field

The invention belongs to the technical field of medical instruments, relates to a gastroscope, and particularly relates to a gastroscope with an adjustable front end angle.

Background

An electronic gastroscope for directly observing, diagnosing and treating gastrointestinal diseases in stomach cavity is composed of an integral flexible endoscope tube and a computer processing system connected to said tube, and features that the image sensor, light source, suction tube and clamp channel are integrated in said tube, and the flexible endoscope tube is inserted into patient's body for observing and treating. And the scope hose rotate by a wide margin can greatly increased ordinary scope inspection patient's uncomfortable sense, and because operator's experience difference, especially to the scope beginner, need to rotate many times and adjust the scope hose, can greatly increased patient's misery like this.

Disclosure of Invention

The invention aims to solve the defects of the conventional gastroscope and provide a gastroscope which can bend the front end of the gastroscope in all directions by inflation, has high freedom degree in the bending direction and is convenient to inflate.

The purpose of the invention can be realized by the following technical scheme:

a gastroscope with adjustable front end angle comprises a tubular gastroscope body, wherein a miniature image sensor and a light-transmitting window are arranged at the front end of the body, at least 8 inflation parts are fixedly arranged on the periphery of the body, the inflation parts are sequentially and uniformly arranged along the circumferential direction of the body, one end of each inflation part is close to the front end of the body, the other end of each inflation part extends along the extending direction of the body, the end of each inflation part is connected with an inflation pipeline, the inflation pipelines correspond to the inflation parts one by one, each inflation pipeline is connected with an inflation device through a transposition assembly, the inflation device can independently inflate each inflation part through the transposition assembly, the inflation parts can elastically stretch to bend the body in the inflation process, the transposition assembly comprises a butt joint part and a rotating part which are concentrically arranged, the butt joint part and the rotating part are both circular and are provided with concentric through holes for the body to pass through, and the rotating part can concentrically rotate relative to the butt joint part, the butt joint part is provided with air inlets which are communicated with the inflation pipelines in a one-to-one correspondence mode, the rotating part is provided with an inflation inlet communicated with the inflation device, and the inflation inlet can be sequentially communicated with the air inlets in the rotating process of the rotating part.

In the above-mentioned gastroscope of adjustable front end angle, be equipped with a marble on the rotating member, marble elasticity sets up on the rotating member, and the concentric round track that is equipped with on the above-mentioned interfacing part, the marble supports to lean on under the spring action and removes on the track, all be equipped with one in each above-mentioned air inlet department on the track and be less than orbital concave surface, the marble rotates each concave surface of in-process business turn over along with the rotating member.

In the above gastroscope with the adjustable front end angle, the butt joint piece is provided with the insertion parts in one-to-one correspondence with the inflation pipelines, the insertion parts are used for being inserted into the corresponding inflation pipelines, the inflation inlet penetrates through the corresponding insertion parts to be communicated with the inflation pipelines, and the insertion parts are tightly matched with the inflation pipelines.

In the above gastroscope with the adjustable front end angle, the rotating piece is provided with a notch, the notch and the inflation ports are respectively arranged at two sides of the body, at least one air inlet is arranged at the notch, and the air inlet arranged at the notch is communicated with the external atmosphere through the notch.

In the gastroscope with the adjustable front end angle, the periphery of the rotating piece is provided with the upper marks at the inflating port, the periphery of the butt joint piece is provided with the lower marks in one-to-one correspondence with the air inlets, the upper marks can be aligned with the lower marks in sequence in the rotating process of the rotating piece, and when the upper marks are aligned with any lower mark, the marbles are popped into the concave surfaces of the corresponding lower marks.

In the above gastroscope with the adjustable tip angle, the outer peripheral surface of the rotary member is a tooth surface.

In the gastroscope with the adjustable front end angle, the inflating part and the inflating pipeline are arranged on an outer pipe, the outer pipe is sleeved on the body, one end of the outer pipe is positioned at the front end of the body, the outer pipe comprises an outer ring and an inner ring which are concentrically arranged at intervals, the body is positioned in the inner ring, the outer ring and the inner ring form an inflating channel at intervals, one end of the inflating channel at the front end of the body is closed, the other end of the inflating channel is butted with the inflating device through the transposition assembly, a plurality of separating parts are arranged in the inflating channel, the separating parts extend along the extension direction of the outer pipe, the plurality of separating parts are sequentially arranged at intervals along the circumferential direction of the body, the separating parts are connected with the outer ring and the inner ring, an inflating area is formed between every two adjacent separating parts, the inflating areas are mutually independent, the outer pipe is divided into a deformation section and a fixed section along the length extension direction of the outer, the inflation area of the fixed section is the inflation pipeline, a separation groove is further formed in each partition part of the deformation section and extends in the extending direction of the corresponding partition part, the corresponding partition part is divided into two parts by the separation groove, the separation groove is opened close to the front end of the body, the other end of the separation groove is closed, the bottom of the separation groove extends to the periphery of the inner ring, the separation groove penetrates through the outer ring, the wall thickness of the inflation area of the deformation section is smaller than that of the inflation area of the fixed section, the deformation section can elastically deform in the inflation process of the inflation area, and the deformation amount of the fixed section is smaller than that of the deformation section.

In the above gastroscope with the adjustable tip angle, the outer ring, the inner ring and the partition part are integrally formed.

In the above-described gastroscope with the adjustable front end angle, the length of the deformed section is in the range of 15mm to 25 mm.

In the gastroscope with the adjustable front end angle, the inner diameter of the inner ring of the deformation section is smaller than that of the inner ring of the fixing section, the joint of the inner ring of the deformation section and the inner ring of the fixing section is in uniform transition, the deformation section is elastically and tightly wrapped on the body, and the fixing section and the body are in clearance fit.

In the above gastroscope with the adjustable front end angle, the inner wall of the inner ring of the deformation section is provided with an inwards concave hole, the periphery of the body is provided with a bulge protruding towards the concave hole, and the bulge is embedded in the concave hole.

In the above gastroscope of adjustable front end angle, the material of outer tube is silica gel.

In the above-mentioned gastroscope of adjustable front end angle, the portion of aerifing is an gasbag, and the gasbag is the strip and extends along body extending direction, and each gasbag links to each other in proper order, and above-mentioned gas filled line is a tracheal hole, trachea and gasbag one-to-one intercommunication, and the gasbag is connected to tracheal one end, and tracheal other end and above-mentioned air inlet intercommunication still are equipped with a sleeve pipe outside the body, and above-mentioned trachea is located the cover intraductally, and the sleeve pipe is tightly wrapped up in the trachea on the body.

Compared with the prior art, the invention has the advantages that:

1. the inflatable parts are sequentially and uniformly arranged along the circumferential direction of the body, at least 8 inflatable parts are arranged, each inflatable part can be inflated independently, and the body can be bent towards different directions by inflating different inflatable parts, so that the inner wall of the gastric cavity can be observed more in multiple directions, and the advancing direction of the gastroscope can be controlled more;

2. at least 8 inflation parts are arranged, different bending directions can be formed by inflating different inflation parts, and adjacent inflation parts can be inflated in a matched manner, namely more bending directions can be formed by setting the inflation amount of the adjacent inflation parts in a different manner, the body can be bent in any direction in all directions by controlling inflation, so that the observation is more comprehensive, the missed diagnosis is not easy, the body does not need to be rotated manually for finding the observation angle, and the discomfort of a patient during the examination can be greatly reduced;

3. the rotating piece is rotated to independently inflate each inflation part, so that the inflation operation is convenient;

4. in the rotating process of the rotating piece, the rotating position can be accurately positioned by sensing the change of the rotating resistance through the marble, so that the inflation inlet is ensured to be in butt joint with the corresponding inflation area, and the inflation is accurate;

5. the outer tube divide into deformation section and canned paragraph, and the deformation section is through aerifing the bending of deformation control body, and the canned paragraph is used for connecting deformation section and aerating device, and canned paragraph deflection is very little, and the inflation process is little to the canned paragraph influence, can not take place obvious inflation or shrink, can effectively reduce the uncomfortable of aerifing in-process patient and feel.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a schematic view of another embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 1 at I;

FIG. 4 is an enlarged view of a portion of FIG. 2 at II;

FIG. 5 is a schematic structural view of the rotary member;

fig. 6 is a schematic structural view of the body.

In the figure, 1, a body; 2. a micro image sensor; 3. a light transmissive window; 4. clamping a channel; 5. an outer tube; 6. a partition portion; 7. an inflation zone; 8. a deformation section; 9. a fixed section; 10. a protrusion; 11. a docking member; 12. a rotating member; 13. a collar; 14. an insertion portion; 15. an air inlet; 16. an inflation inlet; 17. a marble; 18. a track; 19. a concave surface; 20. marking; 21. marking down; 22. a notch; 23. separating the groove.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 6, the gastroscope with adjustable front end angle provided by the present invention comprises a tubular gastroscope body 1, the front end of the body 1 is provided with a miniature image sensor 2 and a light transmission window 3, the body 1 is internally provided with a lead, a light guide fiber, a clamp channel 4, a suction pipeline, etc., the light guide fiber is connected with a light source, the light source is dispersed out through the light transmission window 3 through the light guide fiber, the miniature image sensor 2 is connected with a computer processing system through the lead, the clamp channel 4 is used for clamping and extending into the stomach for biopsy, etc., the suction pipeline is used for sucking and extracting liquid such as blood, etc. in the stomach, and the body 1 is also internally provided with a water injection pipeline and a gas injection pipeline;

the body 1 is externally provided with a plurality of inflatable parts and inflatable pipelines which are in one-to-one correspondence with the inflatable parts, the inflatable parts and the inflatable pipelines are both arranged on an outer tube 5, the outer tube 5 is sleeved on the body 1, the outer tube 5 can be bent, the outer tube 5 extends along the extending direction of the body 1, one end of the outer tube 5 is positioned at the front end of the body 1, the outer tube 5 comprises an outer ring and an inner ring which are concentrically arranged at intervals, the body 1 is positioned in the inner ring, an inflatable channel is formed by the outer ring and the inner ring at intervals, one end of the inflatable channel positioned at the front end of the body 1 is closed, the other end of the inflatable channel is butted with an inflating device through a transposition component, a plurality of separating parts 6 are arranged in the inflatable channel, the separating parts 6 are in a strip shape and extend along the extending direction of the outer tube 5, the plurality of separating parts 6 are sequentially arranged at, the inflation areas 7 are mutually independent and not communicated, the inflation device can inflate the inflation areas 7 independently, the outer ring, the inner ring and the partition part 6 are integrally formed, and the outer pipe 5 is made of silica gel;

the outer tube 5 is divided into a deformation section 8 and a fixed section 9 along the length extension direction, the inflation area 7 part of the deformation section 8 is an inflation part, the inflation area 7 part of the fixed section 9 is an inflation pipeline, the deformation section 8 is close to the front end of the body 1 relative to the fixed section 9, the length range of the deformation section 8 is 15mm-25mm, a separation groove 23 is further arranged at each separation part 6 of the deformation section 8, the separation groove 23 extends along the extension direction corresponding to the separation part 9, the separation groove 23 divides the corresponding separation part 6 into two parts, the length of the separation groove 23 is close to the length of the deformation section 8, the separation groove 23 is opened at the front end of the body 1, the other end of the separation groove 23 is closed, the bottom of the separation groove 23 extends to the periphery, the separation groove 23 penetrates through the outer ring, an elastic strip is formed between two adjacent separation grooves 23, the wall thickness of the inflation area 7 of the deformation section 8 is smaller than that of the inflation area 7 of, the purpose of the setting of the wall thickness difference is to enable the deformation amount of the deformation section 8 to be larger than that of the fixed section 9, the wall thickness of the inflation area 7 of the deformation section 8 is between 0.1mm and 0.3mm, the deformation section 8 needs larger deformation amount, so that the corresponding elastic strip of the inflation area 7 can elastically stretch in the inflation process, the deformation amount of the fixed section 9 needs to be smaller, the fixed section 9 hardly deforms in the inflation process of the inflation area 7, and the fixed section 9 is prevented from generating larger elastic contraction in the inflation process to cause discomfort of a patient;

the inner diameter of the inner ring of the deformation section 8 is smaller than that of the inner ring of the fixing section 9, the butt joint part of the inner ring of the deformation section 8 and the inner ring of the fixing section 9 is in uniform transition, the deformation section 8 is elastically and tightly wrapped on the body 1 and is relatively fixed with the body 1, and the fixing section 9 and the body 1 are in clearance fit, so that the deformation section 8 can be conveniently inserted into the fixing section 9 when the body 1 is installed;

be equipped with the shrinkage pool of indent on the 8 inner circles inner walls of deformation section, be equipped with protruding 10 to the shrinkage pool in body 1 periphery, protruding 10 inlays and establishes in the shrinkage pool, and is spacing to deformation section 8 through protruding 10, prevents that deformation section 8 from shifting along 1 axial of body.

The transposition assembly comprises a butt joint part 11 and a rotating part 12 which are concentrically arranged, the butt joint part 11 and the rotating part 12 are both circular and are provided with through holes for the body 1 to concentrically pass through, a circle of clamping ring is concentrically arranged on the inner wall of the through hole for the body 1 to penetrate through of the butt joint part 11, a circle of concave clamping ring 13 is correspondingly arranged on the outer wall of the body 1, the clamping ring can elastically deform, the clamping ring can be clamped into or separated from the clamping ring 13 through elastic deformation, and the butt joint part 11 and the body 1 are relatively fixed through the clamping ring and the clamping ring 13;

the butt joint piece 11 is provided with inserting parts 14 which are in one-to-one correspondence with the inflation areas 7, the inserting parts 14 are used for being inserted into the corresponding inflation areas 7, the inserting parts 14 are tightly matched with the inflation areas 7, in order to further prevent the outer pipe 5 from falling off, a clamping piece can be additionally arranged at the inserting part 14 outside the outer pipe 5, the outer pipe 5 is clamped on the butt joint piece 11, the butt joint piece 11 is provided with air inlets 15 which are in one-to-one correspondence communication with the inflation areas 7, and the air inlets 15 penetrate through the corresponding inserting parts 14 and are communicated with the inflation areas 7;

the rotating part 12 is attached to the abutting part 11 in a surface-to-surface manner, the rotating part 12 can concentrically rotate relative to the abutting part 11, the body 1 is provided with a limiting part, the limiting part is relatively fixed with the body 1, the limiting part and the abutting part 11 are respectively arranged on the upper surface and the lower surface of the rotating part 12, the rotating part 12 is limited by the limiting part and the abutting part 11, so that the rotating part 12 is closely attached to the abutting part 11, the rotating part 12 is provided with an inflating opening 16 communicated with an inflating device, the inflating opening 16 can be sequentially communicated with each air inlet 15 in the rotating process of the rotating part 12, the rotating part 12 is provided with a marble 17, the marble 17 is elastically arranged on the rotating part 12, the abutting part 11 is concentrically provided with a circle of tracks 18, the marble 17 abuts against the tracks 18 to move under the action of elasticity, each air inlet 15 on each track 18 is provided with a concave 19 lower than the track 18, and the marble 17 can enter and exit, the rotating member 12 can be locked primarily through the cooperation of the marble 17 and the concave surface 19; and the marble 17 will have obvious hand feeling of rotation resistance in the process of entering and exiting from the concave 19, so that the rotating piece 12 can be sensed to rotate in place or not;

an upper mark 20 is arranged at the position of the inflating port 16 on the periphery of the rotating part 12, lower marks 21 which are in one-to-one correspondence with the air inlets 15 are arranged on the periphery of the butt joint part 11, the upper marks 20 can be sequentially aligned with the lower marks 21 in the rotating process of the rotating part 12, when the upper marks 20 are aligned with any one of the lower marks 21, the marble 17 is popped into the concave surface 19 corresponding to the lower mark 21, and the peripheral surface of the rotating part 12 is a tooth surface and is used for increasing the friction resistance so as to facilitate the rotation of the rotating part 12;

the rotating part 12 is provided with a notch 22, the notch 22 and the inflation port 16 are respectively arranged on two sides of the body 1, at least one air inlet 15 is positioned at the notch 22, the air inlet 15 positioned at the notch 22 is communicated with the outside atmosphere through the notch 22, the air inlet 15 inflates the inflation area 7 on one side of the body 1, and the notch 22 deflates the inflation area 7 on the other side of the body 1, so that the body 1 can be smoothly bent.

Bending principle of the body 1: when aerifing one of them inflatable region 7, the inflatable region 7 length extension of 8 parts of deformation section, because deformation section 8 and body 1 relatively fixed, and the length of body 1 can not change, for adapting to correspond inflatable region 7 extension change, deformation section 8 and body 1 need be crooked to the opposite side, thereby drive body 1 through deformation section 8 and produce the bending, through controlling the body 1 bending, adjust the front end angle of body 1, can the pertinence operation, carry out more accurate inspection and treatment operation in the stomach.

The way of aerifing of outer tube divide into 8 at least even inflatable regions, consequently, just it aerifys alone to every district, also can form 8 at least crooked directions, simultaneously can also aerify together through two adjacent inflatable regions, through the cooperation of two inflatable regions inflation volume differences, can form more crooked directions, consequently, the body front end can reach almost in all-round arbitrary direction crooked, can diversely observe the gastric cavity inner wall better, observe more comprehensively, be difficult for neglected diagnosis, and also make the advancing direction of gastroscope become more controllable, and because crooked position is comprehensive, consequently, the body need not be for looking for observation angle and artificially rotate, patient's uncomfortable sense when can greatly reduced inspection.

Example two:

different from the first embodiment, the inflating part is an air bag, a plurality of air bags are sequentially arranged along the circumferential direction of the body 1, the air bags are strip-shaped and extend along the extending direction of the body 1, the length of each air bag is between 10mm and 20mm, the air bags are sequentially connected, the body 1 is tightly wrapped by the plurality of air bags, one end of each air bag is close to the front end of the body 1, the other end of each air bag is connected with an air pipe, the inflating pipeline is an inner hole of the air pipe, the air pipes are communicated with the air bags in a one-to-one correspondence manner, one end of each air pipe is connected with the air bags; the body 1 is also provided with a sleeve outside, the trachea is positioned in the sleeve, and the sleeve tightly wraps the trachea on the body 1.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended sense, i.e., in a sense equivalent to "including at least … …", and not in a closed sense, i.e., in a sense not to be interpreted as "including only … …".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A gastroscope with an adjustable front end angle comprises a tubular gastroscope body (1), wherein the front end of the body (1) is provided with a miniature image sensor (2) and a light-transmitting window (3), and the gastroscope is characterized in that the periphery of the body (1) is fixedly provided with at least 8 inflatable parts, the inflatable parts are sequentially and uniformly arranged along the circumferential direction of the body (1), one end of each inflatable part is close to the front end of the body (1), the other end of each inflatable part extends along the extending direction of the body (1), the end of each inflatable part is connected with an inflation pipeline, the inflation pipelines correspond to the inflatable parts one to one, each inflation pipeline is connected with an inflation device through a transposition assembly, the inflation device can inflate each inflatable part separately through the transposition assembly, the inflatable parts can be elastically extended in the inflation process to enable the body (1) to bend, the transposition assembly comprises a butt joint part (11) and a rotating part (12) which are concentrically arranged, butt joint spare (11) and rotating member (12) all are circular and both all set up the through-hole that supplies above-mentioned body (1) to pass with one heart, and rotating member (12) can rotate with one heart relatively butt joint spare (11), is equipped with air inlet (15) that communicate with above-mentioned gas charging line one-to-one on butt joint spare (11), is equipped with one on rotating member (12) and aerifys mouthful (16) with aerating device intercommunication, and rotating member (12) rotate in-process can make gas charging mouthful (16) communicate with each air inlet (15) in proper order.

2. Gastroscope according to claim 1, characterized in that the rotating member (12) is provided with a ball (17), the ball (17) is elastically mounted on the rotating member (12), the abutment member (11) is concentrically provided with a ring of track (18), the ball (17) is moved against the track (18) under the action of the elastic force, the track (18) is provided with a concave surface (19) lower than the track (18) at each air inlet (15), and the ball (17) can enter and exit each concave surface (19) during the rotation of the rotating member (12).

3. The gastroscope of claim 1 or 2, characterized in that, the butt joint piece (11) is provided with inserting parts (14) corresponding to the inflation pipelines one by one, the inserting parts (14) are used for being inserted into the corresponding inflation pipelines, the inflation inlet (16) penetrates through the corresponding inserting parts (14) to be communicated with the inflation pipelines, and the inserting parts (14) are tightly matched with the inflation pipelines.

4. Gastroscope according to claim 1 or 2, characterized in that the rotating member (12) is provided with a notch (22), the notch (22) and the inflation port (16) are respectively arranged at two sides of the body (1), at least one air inlet (15) is arranged at the notch (22), and the air inlet (15) at the notch (22) is communicated with the outside atmosphere through the notch (22).

5. The gastroscope of claim 2, characterized in that the periphery of the rotating member (12) is provided with an upper mark (20) at the position of the inflation port (16), the periphery of the butt joint member (11) is provided with lower marks (21) corresponding to the air inlets (15) one by one, the upper mark (20) can be aligned with each lower mark (21) in sequence during the rotation of the rotating member (12), and when the upper mark (20) is aligned with any lower mark (21), the marble (17) can be popped into the concave surface (19) corresponding to the lower mark (21).

6. The gastroscope with the adjustable front end angle according to claim 1 or 2, characterized in that the inflation part and the inflation pipeline are arranged on an outer tube (5), the outer tube (5) is sleeved on the body (1), one end of the outer tube (5) is arranged at the front end of the body (1), the outer tube (5) comprises an outer ring and an inner ring which are concentrically arranged at intervals, the body (1) is arranged in the inner ring, the outer ring and the inner ring are arranged at intervals to form an inflation channel, one end of the inflation channel at the front end of the body (1) is closed, the other end of the inflation channel is butted with the inflation device through the transposition assembly, a plurality of separation parts (6) are arranged in the inflation channel, the separation parts (6) extend along the extension direction of the outer tube (5), the plurality of separation parts (6) are sequentially arranged at intervals along the circumferential direction of the body (1), the separation parts (6) are connected with the outer ring and the inner ring, and an inflation area (7), each inflation area (7) is independent, the outer pipe (5) is divided into a deformation section (8) and a fixed section (9) along the length extension direction of the outer pipe, the deformation section (8) is close to the front end of the body (1) relative to the fixed section (9), the inflation area (7) of the deformation section (8) is the inflation part, the inflation area (7) of the fixed section (9) is the inflation pipeline, a separation groove (23) is also formed at each separation part (6) of the deformation section (8), the separation groove (23) extends along the extension direction of the corresponding separation part (6), the corresponding separation part (6) is divided into two by the separation groove (23), the separation groove (23) is open at the position close to the front end of the combined pipe, the other end of the separation groove (23) is closed, the bottom of the separation groove (23) extends to the periphery of the inner ring, the separation groove (23) penetrates through the outer ring, the wall thickness of the inflation area (7) of the deformation section (8) is smaller than that of the inflation area of, the deformation section (8) can elastically deform in the inflation process of the inflation area (7), and the deformation amount of the fixing section (9) is smaller than that of the deformation section (8).

7. Gastroscope according to claim 6, characterized in that the length of the deformation segment (8) ranges between 15mm and 25 mm.

8. The gastroscope with the adjustable front end angle according to claim 6, characterized in that the inner diameter of the inner ring of the deformation section (8) is smaller than that of the inner ring of the fixing section (9), the joint of the inner ring of the deformation section (8) and the inner ring of the fixing section (9) is evenly transited, the deformation section (8) is elastically wrapped on the body (1), and the fixing section (9) and the body (1) are in clearance fit.

9. Gastroscope according to claim 6, characterized in that the deformation section (8) is provided with a concave recess on the inner wall of the inner ring, the body (1) is provided with a convex protrusion (10) protruding towards the recess on the outer periphery, and the protrusion (10) is embedded in the recess.

10. The gastroscope with the adjustable front end angle according to claim 1 or 2, characterized in that the inflation part is an air bag which is strip-shaped and extends along the extending direction of the body (1), the air bags are connected in sequence, the inflation pipeline is an inner hole of an air pipe, the air pipe is communicated with the air bags in a one-to-one correspondence mode, one end of the air pipe is connected with the air bags, the other end of the air pipe is communicated with the air inlet (15), a sleeve is further arranged outside the body (1), the air pipe is positioned in the sleeve, and the sleeve tightly wraps the air pipe on the body (1).