Endoscope auxiliary device, endoscope device and traction forceps

Abstract

The utility model 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, the near-end wall is provided with a channel inlet of a first channel, and the first channel extends along 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 utility model, two or more tools can be used in a coordinated manner during 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 utility model relates to an endoscope auxiliary device, an endoscope device and a traction forceps belong to medical equipment technical field. BACKGROUND

[0002] Epidemiological investigation found that the incidence of gallbladder stones in China is about 10%, the patient group is huge, and the main clinical disposal means for gallbladder stones mainly has traditional open operation, laparoscopic cholecystectomy and gallbladder-preserving stone-removing operation and other operation methods.

[0003] Traditional open operation usually makes an incision under the costal margin, separates the gallbladder from the gallbladder bed, and then performs gallbladder removal or sutures after cutting open the gallbladder to complete the gallbladder-preserving stone-removing operation. This operation is traumatic, has a long healing time, and brings great pain and economic burden to the patient.

[0004] Laparoscopic cholecystectomy is a minimally invasive method for removing the gallbladder, a small incision is made at the navel, a laparoscope is inserted, carbon dioxide gas is sent in to inflate the abdomen, and under the monitoring of the laparoscope, surgical instruments such as an electrocoagulation hook and a grasping forceps are inserted from the sheath tube hole to cooperate with each other to separate the gallbladder from the gallbladder bed, and then the gallbladder is removed or sutured after being cut open to complete the gallbladder-preserving stone-removing operation. Compared with traditional open operation, this operation method is a minimally invasive operation, but since the laparoscope and the instrument channel still need to be opened through multiple trocar working hole channels in the abdomen, it will cause multiple postoperative skin scars on the patient.

[0005] Therefore, in the prior art, an endoscope auxiliary device is proposed, which is used in cooperation with an endoscope, can enter the body from the natural cavity of the human body, and can perform coordinated operation of multiple instrument tools. For example, an endoscope device is disclosed in patent document EP1607037B1, in which two traction forceps are fixed to the front end of the endoscope through a connecting component, and enter the human body together with the endoscope to realize the coordinated operation of multiple instruments under the endoscope and realize the surface non-invasive operation.

[0006] For another example, an endoscope device with additional channels is disclosed in patent document JP2023550505A, in which a fixed device is used to fix the additional channel catheter to the endoscope to coordinate the use of two or more tools during endoscopic surgery.

[0007] However, in these prior art 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, and causing great harm and pain to the patient during the operation. SUMMARY

[0008] The utility model wants to solve the technical problem: how to use two or more tools at the same time during the endoscope operation, greatly reduce the difficulty of endoscope into the natural cavity of the human body.

[0009] In order to solve the above technical problems, the utility model discloses a technical scheme of an endoscope auxiliary device, characterized by comprising

[0010] The shape variable part comprises a distal end wall, a proximal end wall and an outer side wall connecting the distal end wall and the proximal end wall, and a channel inlet of a first channel is arranged on the proximal end wall, and the first channel extends along the length direction of the shape variable part.

[0011] 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.

[0012] The fluid containing cavity is formed between the distal end wall, the proximal end wall, the outer side wall and the channel wall of the first channel,

[0013] The proximal end wall is further provided with a fluid inlet and outlet, and the shape variable part is transformed between the contracted natural state and the inflated use state by making the fluid flow in and out of the fluid containing cavity through the fluid inlet and outlet.

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

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

[0016] Preferably, the outer side wall is provided with a recess near the distal end wall, and the channel outlet of the first channel and a guide slope are arranged in the recess.

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

[0018] Preferably, the utility model further comprises a fluid control system, and the fluid control system comprises

[0019] The fluid pipe is in communication with the fluid inlet and outlet of the shape variable part at one end, and in communication with the safety valve, the pressure gauge and the fluid supply device at the middle part or the tail part.

[0020] The pressure gauge monitors the pressure in the fluid pipe and the fluid containing cavity in communication with the fluid pipe.

[0021] The safety valve discharges the fluid in the fluid pipe when the pressure exceeds the specified safety pressure on the pressure gauge.

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

[0023] Preferably, when the one end of the fluid pipe is detachably connected with 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 inflow valve.

[0024] Preferably, the length of the endoscope fixing part is the same as the length of the shape variable part, and the endoscope fixing part is in the shape of a long cylinder with a second channel formed inside; the endoscope fixing part is detachably sleeved on the insertion part of the endoscope through the second channel;

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

[0026] Alternatively, the endoscope fixing part is a buckle provided on the outer side wall, and the shape variable part is fixed on the endoscope by the buckle;

[0027] Alternatively, the endoscope fixing part and the insertion part of the endoscope are integrally formed;

[0028] Alternatively, the endoscope fixing part includes a plurality of sleeves uniformly distributed on the outer side wall, and the endoscope auxiliary device is detachably sleeved on the insertion part of the endoscope through the plurality of sleeves, and at least one sleeve is provided at a position adjacent to the distal end wall of the outer side wall.

[0029] An endoscope device, characterized by comprising an endoscope and an endoscope auxiliary device used in cooperation with the endoscope, the endoscope comprising an insertion part and a bending part provided at the front end of the insertion part, and the endoscope auxiliary device being arranged on the insertion part; the bending part of the endoscope protrudes distally from the endoscope auxiliary device and is located on the distal side of the endoscope auxiliary device.

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

[0031] A traction forceps, characterized by being used in cooperation with the endoscope auxiliary device and being capable of passing through the first channel of the shape variable part when the shape variable part is in a use state.

[0032] The traction forceps comprises a main body part and a traction forceps bending part arranged at the distal end of the main body part; an extension part protruding from the distal end face of the traction forceps bending part is arranged on the distal end face of the traction forceps bending part, and a clamping part is arranged on the distal end of the extension part; the distal end face of the traction forceps bending part is further provided with an illuminating part and a camera part.

[0033] According to the endoscope auxiliary device and the endoscope device, the fluid flows into and out of the fluid containing cavity in the shape variable part through the fluid inlet and outlet on the shape variable part, and the shape variable part is transformed between the natural state of contraction and the use state of expansion. Thus, before the endoscope enters the natural cavity of the human body, the fluid in the fluid containing cavity is emptied, so that the shape variable part is in the natural state of contraction, and is tightly attached to the insertion part of the endoscope. Even if the endoscope auxiliary device is fixed on the endoscope, the radial size of the endoscope will not change greatly, so that the endoscope with the endoscope auxiliary device can smoothly enter the natural cavity of the human body. On the other hand, after entering the natural cavity of the human body, the fluid flows into the fluid containing cavity, so that the shape variable part is in the use state of expansion, the first channel arranged on the shape variable part is exposed, and additional instruments and tools can enter from the first channel, so that two or more tools can be used coordinately during the endoscope surgery. That is, according to the utility model, two or more tools can be used coordinately during the endoscope surgery, and the difficulty of the endoscope entering the natural cavity of the human body is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A schematic view of the state that the endoscope auxiliary device of the utility model is fixed on the endoscope;

[0035] Figure 2 A schematic view of the endoscope auxiliary device of the utility model;

[0036] Figure 3 A sectional view of the endoscope auxiliary device of the utility model (a schematic view of the shape variable part in the natural state);

[0037] Figure 4 A sectional view of the endoscope auxiliary device of the utility model (a schematic view of the shape variable part in the expanded state);

[0038] Figure 5 A schematic view of the traction forceps of the utility model;

[0039] Figure 6 An enlarged schematic view of the front end of the traction forceps of the utility model;

[0040] Figure 7 A schematic view of the traction forceps of the utility model cooperating with the endoscope by means of the endoscope auxiliary device;

[0041] Figure 8 Fig. 2 is a schematic view of another example of the endoscope auxiliary device of the present application fixed to the endoscope. DETAILED DESCRIPTION

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

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

[0044] As shown in Fig. 1, the endoscope auxiliary device 1 of the present application is used in cooperation with the endoscope 2, and constitutes an endoscope device. The endoscope 2 has an insertion portion, and a bending portion provided at the front end of the insertion portion. When the endoscope auxiliary device 1 is used, the endoscope auxiliary device 1 is fixed to the endoscope 2, and the endoscope 2 and the endoscope auxiliary device 1 are inserted into the natural cavity of the human body. Figure 1 As shown in Fig. 1, the endoscope auxiliary device 1 of the present application is used in cooperation with the endoscope 2, and constitutes an endoscope device. The endoscope 2 has an insertion portion, and a bending portion provided at the front end of the insertion portion. When the endoscope auxiliary device 1 is used, the endoscope auxiliary device 1 is fixed to the endoscope 2, and the endoscope 2 and the endoscope auxiliary device 1 are inserted into the natural cavity of the human body.

[0045] Figure 1 As shown in Fig. 1, the endoscope auxiliary device 1 of the present application is used in cooperation with the endoscope 2, and constitutes an endoscope device. The endoscope 2 has an insertion portion, and a bending portion provided at the front end of the insertion portion. When the endoscope auxiliary device 1 is used, the endoscope auxiliary device 1 is fixed to the endoscope 2, and the endoscope 2 and the endoscope auxiliary device 1 are inserted into the natural cavity of the human body.

[0046] The length of the endoscope auxiliary device 1 can be set as needed. The endoscope auxiliary device 1 can have substantially the same length as 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, the additional instrument can be easily operated to enter, and after the additional instrument emerges from the distal end of the endoscope auxiliary device 1, it can be used in cooperation with the instrument that enters the human body via the endoscope 2.

[0047] Referring to Fig. 1, the endoscope auxiliary device 1 of the present application is described in detail. Figures 2-4 As shown in Fig. 1, the endoscope auxiliary device 1 of the present application is used in cooperation with the endoscope 2, and constitutes an endoscope device. The endoscope 2 has an insertion portion, and a bending portion provided at the front end of the insertion portion. When the endoscope auxiliary device 1 is used, the endoscope auxiliary device 1 is fixed to the endoscope 2, and the endoscope 2 and the endoscope auxiliary device 1 are inserted into the natural cavity of the human body.

[0048] Figure 2 As shown in Fig. 1, the endoscope auxiliary device 1 of the present application is used in cooperation with the endoscope 2, and constitutes an endoscope device. The endoscope 2 has an insertion portion, and a bending portion provided at the front end of the insertion portion. When the endoscope auxiliary device 1 is used, the endoscope auxiliary device 1 is fixed to the endoscope 2, and the endoscope 2 and the endoscope auxiliary device 1 are inserted into the natural cavity of the human body.

[0049] ​​The channel outlet of the first channel 124 can be provided on the distal wall 121, and the additional instrument directly enters the body from the distal wall 121.

[0050] The endoscope fixing part 11 is arranged on the outer side wall 123 of the shape variable part 12, and is used for fixing the shape variable part 12 (i.e. the endoscope auxiliary device 1) on the endoscope 2.

[0051] In addition, as shown in Figures 3-4 The fluid containing cavity 126 is formed between the distal wall 121, the proximal wall 122, the outer side wall 123 and the channel wall of the first channel 124. The fluid outlet is arranged on the proximal wall 122. By making the fluid (gas or liquid) flow in and out of the fluid containing cavity 126 through the fluid outlet, the shape variable part 12 is transformed between the contracted natural state (as shown in Figure 3 ) and the expanded use state (as shown in Figure 4 ).

[0052] Therefore, before the endoscope 2 enters the natural cavity of the human body, the fluid in the fluid containing cavity 126 is emptied, so that the shape variable part 12 is in the contracted natural state, and the shape variable part 12 is tightly attached to the insertion part of the endoscope 2. Even if the endoscope auxiliary device 1 is fixed on the endoscope 2, the overall radial dimension will not change much, so that the endoscope 2 with the endoscope auxiliary device 1 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 fluid is made to flow into the fluid containing cavity 126, so that the shape variable part 12 is in the expanded use state, and the first channel 124 arranged on the shape variable part 12 is exposed. The additional instrument and other tools can enter from the first channel 124, so that two or more tools can be used coordinately during the endoscopic surgery. Therefore, according to the utility model, two or more tools can be used coordinately during the endoscopic surgery, and the difficulty of the endoscope entering the natural cavity of the human body is greatly reduced.

[0053] Further, when the shape variable part 12 is transformed between the natural state and the use state, the shape variable part 12 only changes in the direction perpendicular to the length direction of the shape variable part 12. In other words, when the shape variable part 12 is transformed between the natural state and the use state, the shape variable part 12 does not change or only slightly changes in the length direction. Therefore, the bending of the curved part of the endoscope 2 by the shape variable part 12 in the use state can be prevented, and at the same time, when the shape variable part 12 becomes the use state, the channel of the first channel 124 can provide a larger channel space.

[0054] Preferably, as shown in Figure 2As shown, the outer side wall 123 is provided with a recess 125 near the distal end wall 121, and a channel outlet of the first channel 124 and a guide slope are arranged in the recess 125. When the shape-variable part 12 is in the use state, the guide slope is arranged adjacent to the channel outlet of the first channel 124, and the guide slope is arranged on the distal end side of the channel outlet and is inclined in a manner that the height is higher closer to the distal end wall 121.

[0055] Through such a configuration, when the additional instrument or the like tool emerges from the channel outlet of the first channel 124, the additional instrument is lifted by the guide slope adjacent to the channel outlet to change the advancing direction of the additional instrument, the operation space and the freedom of operation of the additional instrument or the like tool are increased, the interference of the bending part of the endoscope 2 on the additional instrument when the bending part is bent is prevented, and the cooperation of the additional instrument with the instrument entering from the instrument channel of the endoscope 2 is facilitated.

[0056] Further, in the utility model, the inclination angle of the guide slope can be adjusted by changing the expansion degree of the shape-variable part 12, so that the lifting direction of the additional instrument is adjusted, the operation convenience of the additional instrument is improved, and the time for the additional instrument to find the target area is shortened.

[0057] In addition, as shown in the drawings, Figure 2 The endoscope fixing part 11 is provided with a second channel 111. The endoscope fixing part 11 is detachably sleeved on the insertion part of the endoscope 2 through the second channel 111. In this way, the endoscope auxiliary device 1 can be applied to the existing endoscope 2, and after use, the endoscope auxiliary device 1 can be detached from the endoscope 2, and the cleaning of the endoscope auxiliary device 1 and the endoscope 2 is facilitated. Further, the endoscope auxiliary device 1 can be a disposable product, which is detached from the endoscope 2 after use and discarded.

[0058] As shown in the drawings, Figure 2 The endoscope auxiliary device 1 can also have a fluid control system.

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

[0060] One end of the fluid pipe 3 is in communication with the fluid inlet and outlet of the shape-variable part 12, and the middle or tail of the fluid pipe 3 is in communication with the safety valve 4, the pressure gauge 5, and the fluid supply device 6. And a switching switch 7 is installed at the other end of the fluid pipe 3, and the switching switch 7 controls the opening and closing of the fluid pipe 3.

[0061] When the endoscope auxiliary device 1 is required to be converted from the natural state to the use state, the fluid tube 3 is communicated with the fluid inlet and outlet of the shape variable portion 12, the switching switch 7 closes the end portion of the fluid tube 3, thereby closing the fluid tube 3, and the fluid supply device 6 supplies the fluid to the fluid containing cavity 126 of the shape variable portion 12 until the pressure gauge 5 reaches the prescribed pressure. When the fluid is supplied, the inflation pressure is monitored by the pressure gauge 5, and when the pressure exceeds the prescribed safety pressure, the fluid is discharged via the safety valve 4, thereby preventing the pressure in the fluid containing cavity 126 from being excessively large, which can cause the endoscope auxiliary device 1 to be damaged.

[0062] When the endoscope auxiliary device 1 is required to be converted from the use state to the natural state, it is only required to open the switching switch 7 so that the end portion of the fluid tube 3 is open to the outside, and the fluid in the fluid containing cavity 126 is discharged via the fluid tube 3.

[0063] The fluid tube 3 can be directly fixed to the fluid inlet and outlet of the shape variable portion 12, and the endoscope auxiliary device 1 can be formed as a unit.

[0064] On the other hand, the fluid tube 3 can also be a member independent of the shape variable portion 12. When the fluid tube 3 is independent of the shape variable portion 12, the end portion of the fluid tube 3 can also be a closed structure without the switching switch 7, or the end portion of the fluid tube 3 can be directly communicated with the fluid supply device 6. When the endoscope auxiliary device 1 is required to be converted from the use state to the natural state, the fluid tube 3 and the shape variable portion 12 can be directly separated, and the fluid in the fluid containing cavity 126 is discharged via the fluid inlet and outlet of the shape variable portion 12.

[0065] Further, when the fluid tube 3 is independent of the shape variable portion 12, a one-way inflow valve such as a valve core can also be used as the fluid inlet and outlet of the shape variable portion 12. When the fluid pressure in the fluid containing cavity 126 reaches the prescribed pressure, the fluid tube 3 and the shape variable portion 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, thereby preventing 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 required to operate the one-way inflow valve using a tool, i.e., to close the one-way effect of the one-way inflow valve (for example, to press the valve core), and the fluid in the fluid containing cavity 126 is discharged.

[0067] Next, the endoscope auxiliary device 1 will be described with reference to the drawings. Figures 5-7An example of an additional instrument used in the endoscope device of the present application will be described. The additional instrument is a traction forceps 8, which is used in cooperation 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 traction forceps 8 is characterized in that it is provided with an illumination portion and a camera portion.

[0068] As shown in Figure 5 , the traction forceps 8 has a main body portion 84, and a traction forceps bending portion 85 provided at the distal end of the main body portion 84. On the distal end surface of the traction forceps bending portion 85, an extension portion 86 is provided which protrudes from the distal end surface, and on the extension portion 86, a clamping portion 87 of the traction forceps 8 is provided. In addition, as shown in Figure 6 , the distal end surface of the traction forceps bending portion 85 is also provided with an illumination portion 88 and a camera portion 89. In addition, although two illumination portions 88 are shown in Figure 6 , the number of illumination portions 88 can also be one, three, or other numbers, which is not limited in the present application.

[0069] In this way, for example, in a gallbladder surgery under an endoscope, during the insertion of the endoscope 2, the shape variable portion 12 of the endoscope auxiliary device 1 is wrapped around the insertion portion of the endoscope 2, and after being pushed to the target area in 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 the natural state of contraction to the working state of inflation, exposing the first channel 124. The traction forceps 8 is delivered into the stomach through the first channel 124, and guided by the illumination portion 88 and the camera portion 89 attached to the traction forceps 8, and driven by the traction forceps bending portion 85, reaches the target position, and clamps and pulls the stomach wall or the gallbladder wall, as shown in Figure 7 , assisting the instruments entering through the endoscope 2 to perform operations such as incision and postoperative suturing of the stomach wall and the gallbladder wall. And when performing operations such as incision and postoperative suturing of the stomach wall and the gallbladder wall, the camera portion 89 attached to the traction forceps 8 can also be used to observe the action of the endoscope 2, especially the action of the instruments performing incision and suturing operations, which can improve the safety of the operation.

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

[0071] In addition, as shown in Figure 5 , the traction forceps 8 is also provided with a clamping operation portion 81, a bending operation portion 82, and a locking portion 83.

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

[0073] Further, the endoscope fixing portion 11 shown in Figure 2 The endoscope fixing portion 11 and the shape variable portion 12 have substantially the same length, and are in the shape of a long tube with the 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 fixing platform on the outer side 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 side wall 123, which clamps and fixes the shape variable portion 12 on the endoscope 2; or the endoscope auxiliary device 1 can be integrally formed with the insertion portion of the endoscope 2, in which case the connection portion of 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 have other forms, as long as it can fix the shape variable portion 12 on the endoscope 2.

[0074] Referring to Figure 8 , a deformation example of the endoscope fixing portion 11 will be described.

[0075] As shown in Figure 8 , the endoscope fixing portion 11 includes a plurality of sleeves 11' arranged at intervals and uniformly on the outer side wall 123, and the endoscope auxiliary device 1 is provided with a plurality of sleeves 11'. Through such a configuration, the endoscope auxiliary device 1 can be detachably sleeved on the insertion portion of the endoscope 2 through the plurality of sleeves 11', which can reduce the difficulty of installing and detaching 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 the fixation of the endoscope auxiliary device 1, the sleeves 11' are arranged at least on the distal end side of the endoscope auxiliary device 1, i.e. at the position adjacent to the distal end wall 121 of the outer side wall 123, to prevent the endoscope auxiliary device 1 from moving on the insertion portion of the endoscope 2 when the endoscope 2 is inserted.

Claims

1. An endoscope auxiliary device characterized by comprising: Comprising a shape-variable part (12) comprising a distal end wall (121), a proximal end wall (122) and an outer side wall (123) connecting the distal end wall (121) and the proximal end wall (122), a channel inlet of a first channel (124) being provided on the proximal end wall (122), the first channel extending along a length direction of the shape-variable part (12); an endoscope fixing part (11) provided on the outer side wall (123) of the shape-variable part (12) for fixing the shape-variable part (12) on an endoscope (2); a fluid containing cavity (126) being formed between the distal end wall (121), the proximal end wall (122), the outer side wall (123) and a channel wall of the first channel (124), a fluid inlet and outlet being further provided on the proximal end wall (122), the shape-variable part (12) being transformed between a natural state of contraction and a use state of expansion by making fluid flow in and out of the fluid containing cavity (126) through the fluid inlet and outlet.

2. An endoscopy auxiliary device according to claim 1, characterized in that The shape-variable part (12) only changes shape in a direction perpendicular to the length direction of the shape-variable part (12) when being transformed between the natural state and the use state.

3. An endoscopy auxiliary device according to claim 1, characterized in that A channel outlet of the first channel (124) is provided on the distal end wall (121).

4. An endoscopy auxiliary device according to claim 1, characterized in that The outer side wall (123) is provided with a recess (125) near the distal end wall (121), the channel outlet of the first channel (124) and a guide slope being provided in the recess (125); In the use state, the guide slope is provided adjacent to the channel outlet and on a distal side of the channel outlet, and the guide slope is inclined in a manner that the height thereof is higher the closer to the distal end wall (121).

5. An endoscopy auxiliary device according to claim 1, characterized in that Further comprising a fluid control system, the fluid control system comprising a fluid pipe (3) having one end in communication with the fluid inlet and outlet of the shape-variable part (12) and a middle part or a tail part in communication with a safety valve (4), a pressure gauge (5) and a fluid supply device (6); the pressure gauge (5) monitoring the pressure in the fluid pipe (3) and the fluid containing cavity (126) in communication with the fluid pipe (3); the safety valve (4) discharging fluid in the fluid pipe (3) when the pressure exceeds a safety pressure set on the pressure gauge (5); when the one end of the fluid pipe (3) is fixedly connected or integrally formed with the fluid inlet and outlet of the shape-variable part (12), the other end of the fluid pipe (3) is provided with a switching switch (7) for controlling the opening and closing of the other end of the fluid pipe (3); when the one end of the fluid pipe (3) is detachably connected with the fluid inlet and outlet of the shape-variable part (12), the other end of the fluid pipe (3) is in a closed structure.

6. An endoscopy auxiliary device according to claim 5, characterized in that When the one end of the fluid pipe (3) is detachably connected with the fluid inlet and outlet of the shape-variable part (12), the fluid inlet and outlet of the shape-variable part (12) is provided with a one-way inflow valve.

7. An endoscopy auxiliary device according to claim 1, characterized in that The length of the endoscope fixing part (11) is the same as that of the variable shape part (12), the endoscope fixing part (11) is in the shape of a long cylinder with a second channel (111) formed inside; the endoscope fixing part (11) is detachably sleeved on the insertion part of the endoscope (2) through the second channel (111); Alternatively, the endoscope fixing part (11) is a fixing platform on the outer side wall (123), and the endoscope fixing part (11) is bonded to the endoscope (2) by an adhesive; Alternatively, the endoscope fixing part (11) is a buckle provided on the outer side wall (123), and the variable shape part (12) is fixed on the endoscope (2) by the buckle; Alternatively, the endoscope fixing part (11) is integrally formed with the insertion part of the endoscope (2); Alternatively, the endoscope fixing part (11) includes a plurality of sleeves (11') uniformly distributed on the outer side wall (123), and the endoscope auxiliary device (1) is detachably sleeved on the insertion part of the endoscope (2) through the plurality of sleeves (11'), and at least one sleeve (11') is provided at the position adjacent to the distal end wall (121) of the outer side wall (123).

8. An endoscope device characterized by comprising: The endoscope (2) comprises an insertion part and a bending part provided at the front end of the insertion part, and the endoscope auxiliary device (1) is arranged on the insertion part; the bending part 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).

9. An endoscope device as claimed in claim 8, characterized in that When the variable shape part (12) is in a contracted natural state, the variable shape part (12) is tightly attached to the insertion part of the endoscope (2); when the variable shape part (12) is in an inflated use state, a first channel (124) provided on the variable shape part (12) is exposed, so that a tool can enter from the first channel (124).

10. A traction tong, characterized by, The endoscope auxiliary device (1) is used in cooperation with the endoscope auxiliary device (1) as claimed in any one of claims 1-7, and the first channel (124) of the variable shape part (12) in the use state can be used; The traction forceps (8) comprise a main body part (84) and a traction forceps bending part (85) provided at the distal end of the main body part (84); an extension part (86) protruding from the distal end face is provided on the distal end face of the traction forceps bending part (85), and a clamping part (87) is provided at the end of the extension part (86); the distal end face of the traction forceps bending part (85) is further provided with an illumination part (88) and a camera part (89).

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