Endoscope auxiliary device, endoscope device and traction forceps

Abstract

The invention discloses an endoscope auxiliary device, an endoscope device and traction forceps, the endoscope auxiliary device comprises a shape variable part, the shape variable part comprises a far-end wall, a near-end wall and an outer side wall connecting the far-end wall and the near-end wall, a channel inlet of a first channel is formed in the near-end wall, and the first channel extends in the length direction of the shape variable part; the endoscope fixing part is arranged on the outer side wall of the shape variable part and is used for fixing the shape variable part on an endoscope; a fluid containing cavity is formed among the far-end wall, the near-end wall, the outer side wall and the channel wall of the first channel, the near-end wall is further provided with a fluid inlet and outlet, fluid flows in and flows out of the fluid containing cavity through the fluid inlet and outlet, and the shape variable part is converted between a contracted natural state and an expanded use state. According to the invention, two or more tools can be used in a coordinated manner during an endoscopic surgery, and meanwhile, the difficulty that an endoscope enters a natural cavity of a human body is greatly reduced.

Description

Technical Field

[0001] The invention relates to an endoscope auxiliary device, an endoscope device and a traction forceps, belonging to the technical field of medical equipment. Background Art

[0002] Epidemiological surveys have found that the incidence of gallstones in my country is about 10%, and the patient population is huge. The main clinical treatments for gallstones include traditional open surgery, laparoscopic cholecystectomy, and cholecystolithotomy.

[0003] Traditional laparotomy usually involves making an incision under the ribs, separating the gallbladder from the gallbladder bed, and then removing the gallbladder, or cutting the gallbladder and suturing it to complete the gallbladder-preserving and stone-removing surgery. This surgery is highly invasive and takes a long time to heal, causing great pain and financial burden to the patient.

[0004] Laparoscopic cholecystectomy is a minimally invasive method for removing the gallbladder. A small incision is made through the navel, and a laparoscope is inserted. Carbon dioxide gas is introduced to expand the abdomen. Under the monitoring of the laparoscope, the electrocoagulation hook, grasping forceps and other surgical instruments that enter from the sheath channel cooperate with each other to separate the gallbladder from the gallbladder bed. The gallbladder is then removed, or the gallbladder is cut and sutured to complete the gallbladder stone removal operation. Compared with traditional open surgery, this surgical method is a minimally invasive surgery, but because the laparoscope and instrument channels still require multiple trocar working channels in the abdomen, it will cause multiple post-healing skin scars to the patient.

[0005] To this end, in the prior art, an endoscopic auxiliary device is proposed, which is used in conjunction with an endoscope to enter the body from the natural cavity of the human body and perform collaborative surgery with multiple instruments and tools. For example, patent document EP1607037B1 discloses an endoscopic device, in which two traction clamps are fixed to the front end of the endoscope through a connecting component, and enter the human body together with the endoscope to achieve collaborative operation of multiple instruments under the endoscope and realize non-invasive surgery on the body surface.

[0006] For another example, patent document JP2023550505A discloses an endoscope device with an additional channel, in which the additional channel catheter is fixed to the endoscope by a fixing device to achieve coordinated use of two or more tools during endoscopic surgery.

[0007] However, in these existing solutions, two traction forceps or channel catheters are fixed together with the endoscope, which greatly increases the radial size of the endoscope device, making it difficult for the endoscope device to smoothly enter the human body from the natural cavity of the human body, causing great harm and pain to the patient when inserting the endoscope. Summary of the invention

[0008] The technical problem to be solved by the present invention is: how to significantly reduce the difficulty of the endoscope entering the natural cavity of the human body while coordinating the use of two or more tools during endoscopic surgery.

[0009] In order to solve the above technical problems, the technical solution of the present invention is to provide an endoscope auxiliary device, which is characterized by comprising

[0010] The shape-variable portion comprises a distal wall, a proximal wall and an outer side wall connecting the distal wall and the proximal wall, wherein a channel entrance of a first channel is arranged on the proximal wall, and the first channel extends along the length direction of the shape-variable portion;

[0011] an endoscope fixing portion, disposed on the outer side wall of the shape-variable portion, and used for fixing the shape-variable portion on the endoscope;

[0012] The distal wall, the proximal wall, the outer side wall and the channel wall of the first channel form a fluid receiving chamber.

[0013] The proximal wall is also provided with a fluid inlet and outlet, and the shape-variable portion is transformed between a contracted natural state and an expanded use state by allowing the fluid to flow into and out of the fluid containing chamber through the fluid inlet and outlet.

[0014] Preferably, when the shape-variable portion is transformed between the natural state and the use state, the shape-variable portion changes shape only in a direction perpendicular to the length direction of the shape-variable portion.

[0015] Preferably, the channel outlet of the first channel is arranged on the distal wall.

[0016] Preferably, the outer side wall is provided with a recessed portion at a position close to the distal end wall, and the channel outlet and the guide slope of the first channel are provided in the recessed portion;

[0017] In the use state, the guide slope is disposed adjacent to the channel outlet, and the guide slope is disposed on the distal end side of the channel outlet, and the guide slope is inclined in such a manner that the closer to the distal end wall, the higher the height of the guide slope.

[0018] Preferably, it also includes a fluid control system, the fluid control system includes

[0019] A fluid pipe, one end of which is connected to the fluid inlet and outlet of the shape-variable part, and the middle or tail portion of which is connected to the safety valve, the pressure gauge and the fluid supply device;

[0020] A pressure gauge, monitoring the pressure in the fluid tube and the fluid containing cavity connected to the fluid tube;

[0021] Safety valve, which discharges the fluid in the fluid pipe when the pressure exceeds the safety pressure specified on the pressure gauge;

[0022] When one end of the fluid tube is fixedly connected or integrally formed with the fluid inlet and outlet of the shape-variable part, the other end of the fluid tube is provided with a switching switch for controlling the opening and closing of the other end of the fluid tube; when one end of the fluid tube is detachably connected to the fluid inlet and outlet of the shape-variable part, the other end of the fluid tube is a closed structure.

[0023] Preferably, when one end of the fluid tube is detachably connected to the fluid inlet and outlet of the shape-variable part, the fluid inlet and outlet of the shape-variable part is provided with a one-way inlet valve.

[0024] Preferably, the length of the endoscope fixing portion is the same as that of the shape-variable portion, and the endoscope fixing portion is in the shape of a long tube with a second channel formed inside; the endoscope fixing portion is detachably mounted on the insertion portion of the endoscope via the second channel;

[0025] Alternatively, the endoscope fixing portion is a fixing platform on the outer side wall, and the endoscope fixing portion is bonded to the endoscope by an adhesive;

[0026] Alternatively, the endoscope fixing portion is a buckle arranged on the outer wall, and the shape-variable portion is fixed to the endoscope by the buckle;

[0027] Alternatively, the endoscope fixing portion and the endoscope insertion portion are an integrally formed structure;

[0028] Alternatively, the endoscope fixing portion includes a plurality of sleeves evenly distributed on the outer wall, the endoscope auxiliary device is detachably mounted on the insertion portion of the endoscope through the plurality of sleeves, and at least one sleeve is arranged at a position adjacent to the outer wall and the distal wall.

[0029] An endoscope device, characterized in that it includes an endoscope and an endoscope auxiliary device used in conjunction with the endoscope, the endoscope including an insertion portion and a curved portion arranged at the front end of the insertion portion, and the endoscope auxiliary device is arranged on the insertion portion; the curved portion of the endoscope protrudes toward the distal end from the endoscope auxiliary device and is located on the distal side of the endoscope auxiliary device.

[0030] Preferably, when the shape-variable portion is in a contracted natural state, the shape-variable portion is tightly attached to the insertion portion of the endoscope; when the shape-variable portion is in an expanded use state, a first channel provided on the shape-variable portion is exposed, so that tools can enter from the first channel.

[0031] A traction forceps, characterized in that it is used in conjunction with an endoscope auxiliary device and can pass through the first channel when the shape-variable part is in use;

[0032] The traction clamp comprises a main body and a traction clamp curved part arranged at the distal end of the main body; an extension part protruding from the distal end surface is arranged on the distal end surface of the traction clamp curved part, and a clamping part is arranged on the end of the extension part; the distal end surface of the traction clamp curved part is also provided with a lighting part and a camera part.

[0033] According to the endoscope auxiliary device and the endoscope device of the present invention, the shape-variable part is transformed between a contracted natural state and an expanded use state by allowing the fluid to flow in and out of the fluid-receiving cavity in the shape-variable part through the fluid inlet and outlet on the shape-variable part. Therefore, before the endoscope enters the natural cavity of the human body, the fluid in the fluid-receiving cavity is emptied, so that the shape-variable part is in a contracted natural state, so that it is closely attached to the insertion part of the endoscope. Even if the endoscope auxiliary device is fixed on the endoscope, the radial dimension of the endoscope will not change greatly, so that the endoscope with the endoscope auxiliary device fixed can smoothly enter the natural cavity of the human body. On the other hand, after entering the natural cavity of the human body, by allowing the fluid to flow into the fluid-receiving cavity, the shape-variable part is in an expanded use state, exposing the first channel set on the shape-variable part, and additional instruments and other tools can enter from the first channel, so that two or more tools can be used in coordination during endoscopic surgery. That is, according to the present invention, while being able to coordinate the use of two or more tools during endoscopic surgery, the difficulty of the endoscope entering the natural cavity of the human body is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a state in which the endoscope auxiliary device of the present invention is fixed on an endoscope;

[0035] Figure 2 is a schematic diagram of an endoscope auxiliary device of the present invention;

[0036] Figure 3 is a cross-sectional view of the endoscope auxiliary device of the present invention (a schematic diagram of the shape-variable portion in a natural state);

[0037] Figure 4 is a cross-sectional view of the endoscope auxiliary device of the present invention (a schematic diagram of the shape-variable portion in an expanded state);

[0038] Figure 5 is a schematic diagram of a traction clamp of the present invention;

[0039] Figure 6 is an enlarged schematic diagram of the front end of the traction clamp of the present invention;

[0040] Figure 7 It is a schematic diagram of the traction forceps of the present invention cooperating with an endoscope by means of an endoscope auxiliary device;

[0041] Figure 8This is a schematic diagram showing another example of the endoscope assisting device of the present invention fixed to an endoscope. DETAILED DESCRIPTION

[0042] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0043] In the present invention, the tip end side of the endoscope 2 is referred to as a distal end, and the operation portion side of the endoscope 2 is referred to as a proximal end.

[0044] like Figure 1 As shown, the endoscope auxiliary device 1 of the present invention is used in conjunction with an endoscope 2 to form an endoscope device. The endoscope 2 has an insertion portion and a curved portion disposed at the front end of the insertion portion. When the endoscope auxiliary device 1 is used, the endoscope auxiliary device 1 is fixed on the endoscope 2 and enters the natural cavity of the human body together with the endoscope 2.

[0045] Preferably, if Figure 1 As shown, the endoscope auxiliary device 1 is fixed to the insertion portion of the endoscope 2, and the bending portion of the endoscope 2 protrudes distally from the endoscope auxiliary device 1 and is located on the distal side of the endoscope auxiliary device 1. In this way, the endoscope auxiliary device 1 does not affect the bending of the endoscope 2, and the bending operation of the endoscope 2 does not affect the operation of additional instruments and other tools that enter the human body through the endoscope auxiliary device 1, which can prevent interference between multiple instruments.

[0046] The length of the endoscope auxiliary device 1 can be set as needed. The endoscope auxiliary device 1 can have a length that is substantially the same as the length of the insertion portion of the endoscope 2, or can be shorter than the length of the insertion portion of the endoscope 2. As long as the proximal end of the endoscope auxiliary device 1 is located outside the body when the endoscope 2 enters the predetermined area, it is convenient to operate additional instruments to enter, and after the additional instruments emerge from the distal end of the endoscope auxiliary device 1, they can cooperate with the instruments that enter the human body through the endoscope 2.

[0047] Reference Figure 2-Figure 4 , the endoscope assisting device 1 involved in the present invention is described in detail.

[0048] like Figure 2 As shown, the endoscope auxiliary device 1 includes an endoscope fixing portion 11 and a shape-variable portion 12. The shape-variable portion 12 includes a distal wall 121, a proximal wall 122, and an outer wall 123 connecting the distal wall 121 and the proximal wall 122. The proximal wall 122 is provided with a channel entrance of a first channel 124, and the first channel 124 extends along the length direction of the shape-variable portion 12.

[0049] The channel outlet of the first channel 124 can be arranged on the distal wall 121 , and additional instruments can directly enter the body from the distal wall 121 .

[0050] The endoscope fixing portion 11 is provided on the outer side wall 123 of the shape-variable portion 12 , and is used to fix the shape-variable portion 12 (ie, the endoscope auxiliary device 1 ) on the endoscope 2 .

[0051] In addition, if Figure 3-Figure 4 As shown, the distal wall 121, the proximal wall 122, the outer wall 123 and the channel wall of the first channel 124 form a fluid receiving chamber 126. The proximal wall 122 is also provided with a fluid inlet and outlet. By allowing the fluid (gas or liquid) to flow in and out of the fluid receiving chamber 126 through the fluid inlet and outlet, the shape-variable portion 12 is in the contracted natural state ( Figure 3 state shown) and the expanded use state ( Figure 4 states shown).

[0052] Thus, before the endoscope 2 enters the natural cavity of the human body, the fluid in the fluid receiving chamber 126 is emptied, so that the shape-variable portion 12 is in a contracted natural state, so that the shape-variable portion 12 is closely attached to the insertion portion of the endoscope 2. Even if the endoscope auxiliary device 1 is fixed on the endoscope 2, the overall radial dimension will not change greatly. Therefore, the endoscope 2 with the endoscope auxiliary device 1 fixed can smoothly enter the natural cavity of the human body. On the other hand, after the endoscope 2 enters the natural cavity of the human body and reaches the predetermined area, the shape-variable portion 12 is in an expanded use state by allowing the fluid to flow into the fluid receiving chamber 126, exposing the first channel 124 provided on the shape-variable portion 12, and additional instruments and other tools can enter from the first channel 124, so that two or more tools can be used in coordination during endoscopic surgery. Therefore, according to the present invention, while two or more tools can be used in coordination during endoscopic surgery, the difficulty of the endoscope entering the natural cavity of the human body is greatly reduced.

[0053] Furthermore, when the shape-variable portion 12 changes between the natural state and the use state, the shape-variable portion 12 changes shape only in a direction perpendicular to the length direction of the shape-variable portion 12. In other words, when the shape-variable portion 12 changes between the natural state and the use state, the shape-variable portion 12 does not change shape or changes shape only slightly in the length direction of the shape-variable portion 12. Thus, the shape-variable portion 12 in the use state can be prevented from affecting the bending of the bending portion of the endoscope 2, and at the same time, when the shape-variable portion 12 is in the use state, the channel of the first channel 124 can be ensured to be complete and provide a larger channel space.

[0054] Preferably, if Figure 2As shown, the outer wall 123 is provided with a recess 125 at a position close to the distal wall 121, and the channel outlet of the first channel 124 and the guide slope are provided in the recess 125. When the shape variable portion 12 is in use, the guide slope is provided adjacent to the channel outlet of the first channel 124, and the guide slope is provided at the distal side of the channel outlet and is inclined in a manner that the closer to the distal wall 121, the higher the height.

[0055] With such a structure, when additional instruments and other tools emerge from the channel exit of the first channel 124, the additional instruments are lifted by the guide slope adjacent to the channel exit to change the forward direction of the additional instruments, thereby increasing the operating space and operating freedom of the additional instruments and other tools, and preventing the bending portion of the endoscope 2 from interfering with the additional instruments when bending, so as to facilitate the cooperation between the additional instruments and the instruments entering from the instrument channel of the endoscope 2.

[0056] Furthermore, in the present invention, the inclination angle of the guide slope can be adjusted by changing the expansion degree of the shape-variable portion 12, thereby adjusting the lifting direction of the additional device, which can improve the operating convenience of the additional device and shorten the time for the additional device to find the target area.

[0057] In addition, if Figure 2 As shown, the endoscope fixing portion 11 is provided with a second channel 111. The endoscope fixing portion 11 is detachably mounted on the insertion portion of the endoscope 2 via the second channel 111. In this way, the endoscope auxiliary device 1 can be applied to the existing endoscope 2, and can be removed from the endoscope 2 after use, which is convenient for cleaning the endoscope auxiliary device 1 and the endoscope 2. Furthermore, the endoscope auxiliary device 1 can be a disposable product, which can be removed from the endoscope 2 and discarded after use.

[0058] like Figure 2 As shown, the endoscope assisting device 1 may also have a fluid control system.

[0059] The fluid control system includes a fluid pipe 3 , a safety valve 4 , a pressure gauge 5 , a fluid supply device 6 , and a changeover switch 7 .

[0060] One end of the fluid tube 3 is connected to the fluid inlet and outlet of the shape-variable portion 12, and the middle or tail of the fluid tube 3 is connected to the safety valve 4, the pressure gauge 5 and the fluid supply device 6. In addition, a switch 7 is installed at the end of the other end of the fluid tube 3, and the switch 7 controls the opening and closing of the fluid tube 3.

[0061] When the endoscope auxiliary device 1 needs to be switched from the natural state to the use state, the fluid tube 3 is connected to the fluid inlet and outlet of the shape-variable portion 12, and the switch 7 is switched to close the end of the fluid tube 3, thereby closing the fluid tube 3, and supplying fluid to the fluid receiving chamber 126 of the shape-variable portion 12 through the fluid supply device 6 until the pressure gauge 5 reaches a specified pressure. When the fluid is supplied, the inflation pressure is monitored by the pressure gauge 5, and when the pressure exceeds the specified safety pressure, the fluid is discharged through the safety valve 4 to prevent the pressure in the fluid receiving chamber 126 from being too high, resulting in damage to the endoscope auxiliary device 1.

[0062] When the endoscope auxiliary device 1 needs to be switched from the use state to the natural state, it is only necessary to turn on the switching switch 7 so that the end of the fluid tube 3 is opened to the outside, and the fluid in the fluid containing cavity 126 flows out through the fluid tube 3 .

[0063] The fluid tube 3 can be directly fixed on the fluid inlet and outlet of the shape-variable portion 12 to form an integral body with the endoscope auxiliary device 1 .

[0064] On the other hand, the fluid tube 3 and the shape-variable part 12 may be independent components. When the fluid tube 3 and the shape-variable part 12 are independent, the end of the fluid tube 3 may not be equipped with the switch 7 but may be a closed structure, or the end of the fluid tube 3 may be directly connected to the fluid supply device 6. When the endoscope auxiliary device 1 needs to be switched from the use state to the natural state, the fluid tube 3 and the shape-variable part 12 may be directly separated, and the fluid in the fluid receiving chamber 126 may flow out through the fluid inlet and outlet of the shape-variable part 12.

[0065] Furthermore, when the fluid tube 3 and the shape-variable part 12 are independent of each other, a one-way inflow valve such as a valve core can be used as the fluid inlet and outlet of the shape-variable part 12. When the fluid pressure in the fluid-containing cavity 126 reaches a specified pressure, the fluid tube 3 and the shape-variable part 12 are separated, and the fluid pressure in the fluid-containing cavity 126 is maintained by the sealing performance of the fluid-containing cavity 126 and the one-way inflow valve. In this way, when the endoscope auxiliary device 1 is used, the fluid control system can be removed to prevent the fluid control system from interfering with the endoscope user such as a doctor.

[0066] In addition, at the end of use, it is only necessary to use a tool to operate the one-way inflow valve, that is, to close the one-way effect of the one-way inflow valve (for example, pressing the valve core, etc.) and discharge the fluid in the fluid containing chamber 126.

[0067] Next, refer to Figure 5-Figure 7, an example of an additional instrument used in the endoscope device involved in the present invention is described. The additional instrument is a traction forceps 8, which is used in conjunction with the endoscope auxiliary device 1 and can pass through the first channel 124 of the shape-variable portion 12 in the use state. The biggest feature of the traction forceps 8 is that it is provided with a lighting unit and a camera unit.

[0068] like Figure 5 As shown in FIG. 1 , the traction clamp 8 comprises a main body 84 and a traction clamp curved portion 85 disposed at the distal end of the main body 84. An extension portion 86 protruding from the distal end surface is disposed on the distal end surface of the traction clamp curved portion 85, and a clamping portion 87 of the traction clamp 8 is disposed on the extension portion 86. Figure 6 As shown, the distal end surface of the traction clamp bending portion 85 is also provided with an illumination unit 88 and a camera unit 89. Figure 6 Two lighting units 88 are shown in the figure, but the number of the lighting units 88 can also be one, three, or other numbers, which is not limited in the present invention.

[0069] Thus, for example, in endoscopic gallbladder surgery, during the insertion of the endoscope 2, the shape-variable portion 12 of the endoscope auxiliary device 1 is covered on the insertion portion of the endoscope 2. After being pushed to the target area of ​​the stomach, the endoscope auxiliary device 1 supplies fluid to the fluid containing cavity 126 through the fluid control system, and the shape-variable portion 12 of the endoscope auxiliary device 1 changes from a contracted natural state to an expanded working state, exposing the first channel 124. The traction forceps 8 is delivered into the stomach through the first channel 124, and under the guidance of the lighting unit 88 and the camera unit 89 attached to the traction forceps 8, and driven by the guide slope of the shape-variable portion 12 and the bending portion 85 of the traction forceps 8, it reaches the target position, clamps and tractions the stomach wall or the gallbladder wall, as shown in FIG. Figure 7 As shown, the instrument entering through the endoscope 2 assists in performing operations such as incision and postoperative suturing of the stomach wall and gallbladder wall. In addition, when performing operations such as incision and postoperative suturing of the stomach wall and gallbladder wall, the camera unit 89 attached to the traction forceps 8 can also observe the movement of the endoscope 2, especially the movement of the instrument performing the incision and suturing operations, which can improve the safety of the operation.

[0070] Of course, the endoscopic device of the present invention can also be applied to other endoscopic surgeries that require the cooperation of multiple instruments.

[0071] In addition, if Figure 5 As shown, the traction forceps 8 are further provided with a clamping operation portion 81 , a bending operation portion 82 , and a locking portion 83 .

[0072] The clamping operation part 81 controls the clamping action of the clamping part 87 of the traction forceps 8 , the bending operation part 82 controls the bending action of the traction forceps bending part 85 , and the locking part 83 can lock the clamping operation part 81 and the bending operation part 82 to lock the posture of the traction forceps 8 .

[0073] In addition, Figure 2 The endoscope fixing portion 11 and the shape-variable portion 12 shown in the figure have approximately the same length, and are in the shape of a long cylinder with a second channel 111 formed inside. However, the endoscope fixing portion 11 can also have other forms. For example, the endoscope fixing portion 11 can be a fixed platform on the outer wall 123, which is bonded to the endoscope 2 by an adhesive; the endoscope fixing portion 11 can be a buckle provided on the outer wall 123, which snaps and fixes the shape-variable portion 12 to the endoscope 2; or the endoscope auxiliary device 1 and the insertion portion of the endoscope 2 can be integrally formed, in which case the connection portion between the endoscope auxiliary device 1 and the endoscope 2 can be regarded as the endoscope fixing portion 11. The endoscope fixing portion 11 can also be in other forms, as long as the shape-variable portion 12 can be fixed to the endoscope 2.

[0074] Reference Figure 8 , a modified example of the endoscope fixing portion 11 is described.

[0075] like Figure 8 As shown, the endoscope fixing part 11 includes a plurality of sleeves 11' spaced apart and evenly distributed on the outer wall 123, and the endoscope auxiliary device 1 is provided with a plurality of sleeves 11'. With such a structure, the endoscope auxiliary device 1 is detachably sleeved on the insertion part of the endoscope 2 through the plurality of sleeves 11', which can reduce the difficulty of installing and removing the endoscope auxiliary device 1, and can improve the convenience of cleaning the sleeves 11'.

[0076] Of course, in order to improve the reliability of fixation of the endoscopic auxiliary device 1, when the endoscope 2 is inserted, the endoscopic auxiliary device 1 is prevented from moving on the insertion portion of the endoscope 2, and a sleeve 11' is provided at least on the distal side of the endoscopic auxiliary device 1, that is, at a position adjacent to the outer wall 123 and the distal wall 121.

Claims

1. An endoscope assisting device, characterized in that: include A shape-variable portion (12) comprising a distal wall (121), a proximal wall (122), and an outer wall (123) connecting the distal wall (121) and the proximal wall (122), wherein a channel entrance of a first channel (124) is provided on the proximal wall (122), and the first channel extends along the length direction of the shape-variable portion (12); An endoscope fixing portion (11) is arranged on an outer side wall (123) of the shape-variable portion (12) and is used to fix the shape-variable portion (12) on the endoscope (2); The distal wall (121), the proximal wall (121), the outer wall (122) and the channel wall of the first channel (124) form a fluid containing chamber (126). The proximal wall (122) is also provided with a fluid inlet and outlet, and by allowing the fluid to flow into and out of the fluid containing chamber (126) through the fluid inlet and outlet, the shape-variable portion (12) is transformed between a contracted natural state and an expanded use state.

2. An endoscope assisting device as claimed in claim 1, characterized in that: When the shape-variable portion (12) changes between the natural state and the use state, the shape-variable portion (12) changes shape only in a direction perpendicular to the length direction of the shape-variable portion (12).

3. An endoscope assisting device as claimed in claim 1, characterized in that: The channel outlet of the first channel (124) is arranged on the distal wall (121).

4. An endoscope assisting device as claimed in claim 1, characterized in that: The outer side wall (123) is provided with a recess (125) at a position close to the distal end wall (121), and the recess (125) is provided with a channel outlet and a guide slope of the first channel (124); In the use state, the guide slope is arranged adjacent to the channel outlet, and the guide slope is arranged on the distal side of the channel outlet, and the guide slope is inclined in a manner that the closer it is to the distal wall (121), the higher the height.

5. An endoscope assisting device as claimed in claim 1, characterized in that: Also included is a fluid control system, the fluid control system includes A fluid pipe (3), one end of which is connected to the fluid inlet and outlet of the shape-variable portion (12), and the middle or tail portion of which is connected to the safety valve (4), the pressure gauge (5) and the fluid supply device (6); A pressure gauge (5) for monitoring the pressure in the fluid tube (3) and the fluid containing chamber (126) connected to the fluid tube (3); A safety valve (4) is used to discharge the fluid in the fluid pipe (3) when the fluid exceeds the safety pressure specified on the pressure gauge (5); When one end of the fluid tube (3) is fixedly connected to or integrally formed with the fluid inlet and outlet of the shape-variable portion (12), the other end of the fluid tube (3) is provided with a switching switch (7) for controlling the opening and closing of the other end of the fluid tube (3); when one end of the fluid tube (3) is detachably connected to the fluid inlet and outlet of the shape-variable portion (12), the other end of the fluid tube (3) is a closed structure.

6. An endoscope assisting device as claimed in claim 5, characterized in that: When one end of the fluid pipe (3) is detachably connected to the fluid inlet and outlet of the shape-variable portion (12), the fluid inlet and outlet of the shape-variable portion (12) is provided with a one-way inlet valve.

7. An endoscope assisting device as claimed in claim 1, characterized in that: The length of the endoscope fixing portion (11) is the same as that of the shape-variable portion (12), and the endoscope fixing portion (11) is in the shape of a long tube with a second channel (111) formed inside; the endoscope fixing portion (11) is detachably mounted on the insertion portion of the endoscope (2) via the second channel (111); Alternatively, the endoscope fixing portion (11) is a fixing platform on the outer wall (123), and the endoscope fixing portion (11) is bonded to the endoscope (2) by an adhesive; Alternatively, the endoscope fixing portion (11) is a buckle arranged on the outer side wall (123), and the shape-changing portion (12) is fixed to the endoscope (2) by means of the buckle; Alternatively, the endoscope fixing portion (11) and the insertion portion of the endoscope (2) are an integrally formed structure; Alternatively, the endoscope fixing portion (11) includes a plurality of sleeves (11') uniformly distributed on the outer wall (123), and the endoscope auxiliary device (1) is detachably mounted on the insertion portion of the endoscope (2) via the plurality of sleeves (11'), and at least one sleeve (11') is arranged at a position adjacent to the outer wall (123) and the distal wall (121).

8. An endoscope device, characterized in that: It comprises an endoscope (2) and an endoscopic auxiliary device (1) as described in any one of claims 1 to 9 for use therewith, the endoscope (2) comprising an insertion portion and a curved portion arranged at the front end of the insertion portion, and the endoscopic auxiliary device (1) is arranged on the insertion portion; the curved portion of the endoscope (2) protrudes distally from the endoscopic auxiliary device (1) and is located on the distal side of the endoscopic auxiliary device (1).

9. An endoscope device according to claim 8, characterized in that: When the shape-variable portion (12) is in a contracted natural state, the shape-variable portion (12) is tightly attached to the insertion portion of the endoscope (2); when the shape-variable portion (12) is in an expanded use state, a first channel (124) provided on the shape-variable portion (12) is exposed, so that a tool can enter through the first channel (124).

10. A traction clamp, characterized in that: used in conjunction with the endoscope auxiliary device (1) according to any one of claims 1 to 7, and capable of passing through the first channel (124) when the shape-variable portion (12) is in use; The traction clamp (8) comprises a main body (84) and a traction clamp curved portion (85) arranged at the distal end of the main body (84); an extension portion (86) protruding from the distal end surface is arranged on the distal end surface of the traction clamp curved portion (85), and a clamping portion (87) is arranged at the end of the extension portion (86); and an illumination portion (88) and a camera portion (89) are also arranged on the distal end surface of the traction clamp curved portion (85).

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