An insertion section and an endoscope

Abstract

The present invention discloses an insertion portion and an endoscope, relating to the field of medical devices. The insertion portion includes an insertion main body, a delivery tube, an instrument tube, and a second airbag. The insertion main body includes a front end seat and an imaging module disposed within the front end seat. The front end seat is provided with an instrument channel and a telescopic channel. A first airbag is disposed on the outer surface of the insertion main body. The delivery tube is communicated with the first airbag. The instrument tube extends into the instrument channel. The second airbag is located within the telescopic channel. The second airbag includes an expansion section and a telescopic section. The telescopic section can extend out of the front end seat. One end of the telescopic section is connected to the front end seat, and the other end is connected to the expansion section. This setting can form a relatively enclosed detection space between the expansion section and the first airbag, and the lesion is within the detection space. At this time, a developing medium is injected through the instrument tube. The detection space performs fluorescent labeling on the lesion, avoiding a large amount of loss of the fluorescent liquid, and can reduce the amount of the fluorescent liquid used. At the same time, as the loss of the fluorescent liquid is reduced, clearer images can also be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an insertion part and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device, which is an inspection device that can directly enter the natural ducts of the human body and can provide sufficient diagnostic information for doctors to treat diseases. The existing endoscope's camera module has a white light mode, and the fluorescence image is superimposed and fused onto the white light image. Doctors can observe the fluorescently labeled lesions in the white light mode to avoid excising important blood vessels and normal tissues, improve the surgical efficiency, and reduce the surgical risk.

[0003] However, in actual operation, it is often necessary to inject an injection agent into the patient in advance and wait for a certain period of time before inserting the endoscope to observe the lesion contour. The waiting time is relatively long, the surgical efficiency is low, and the condition may be delayed. Moreover, the actual imaging effect is poor, and medical staff are difficult to clearly observe the lesion, and there is still a certain surgical risk. Summary of the Invention

[0004] In view of the above disadvantages of the related art, the present application provides an insertion part and an endoscope to solve the above technical problems.

[0005] The present application provides an insertion part for an endoscope. The insertion part includes an insertion main body, a delivery tube, an instrument tube, and a second airbag. The insertion main body includes a front end seat and a camera module disposed in the front end seat. The front end seat is provided with an instrument channel and a telescopic channel. A first airbag is disposed on the outer surface of the insertion main body. The delivery tube is communicated with the first airbag and is used to inject a medium into the first airbag. The instrument tube extends into the instrument channel. The second airbag is located in the telescopic channel. The second airbag includes an expansion section and a telescopic section. The telescopic section can extend out of the front end seat. One end of the telescopic section is connected to the front end seat, and the other end is connected to the expansion section. When the telescopic section extends to a preset position, the telescopic section is communicated with the expansion section. Wherein, when the volume of the first airbag is greater than or equal to a preset volume, the first airbag is communicated with the telescopic section, and the medium drives the telescopic section to extend out of the front end seat and drives the expansion section to move in a direction away from the first airbag, so as to form a detection space between the expansion section and the first airbag.

[0006] In an embodiment of the present application, when the volume of the first airbag is equal to the preset volume, the pressure value in the first airbag is equal to a first preset pressure value.

[0007] In an embodiment of the present application, the insertion part further includes a first pressure valve. The first pressure valve is arranged between the first airbag and the telescopic section. When the pressure value in the first airbag is greater than or equal to the first preset pressure value, the first pressure valve opens, the first airbag communicates with the telescopic section, and the medium can flow to the telescopic section. When the pressure value in the first airbag is less than the first preset pressure value, the first pressure valve closes and isolates the first airbag from the telescopic section.

[0008] In an embodiment of the present application, the insertion body further includes a connecting pipe. One end of the connecting pipe is connected to the first airbag, the other end communicates with the telescopic section and extends to the distal end of the telescopic section, and the first pressure valve is arranged on the connecting pipe.

[0009] In an embodiment of the present application, the expansion section is connected to the distal end of the telescopic section. The telescopic section has a plurality of telescopic parts, and the plurality of telescopic parts can axially contract in the telescopic channel. During the process of the telescopic section extending out of the front seat, the plurality of telescopic parts extend in sequence from the distal end to the proximal end of the telescopic section.

[0010] In an embodiment of the present application, the second airbag further includes a second pressure valve. The second pressure valve is arranged between the first airbag and the telescopic section and is located at the distal end of the telescopic section. When the telescopic section extends to a preset position, the pressure value of the telescopic section can rise to the second preset pressure value, the second pressure valve opens, the telescopic section communicates with the expansion section, and the medium can flow into the expansion section. The first preset pressure value is less than the second preset pressure value.

[0011] In an embodiment of the present application, the telescopic section is configured as a corrugated pipe.

[0012] In an embodiment of the present application, the first pressure valve and the second pressure valve are diaphragm valves.

[0013] In an embodiment of the present application, a reflective layer is provided outside the expansion section and / or the telescopic section.

[0014] In an embodiment of the present application, the insertion part further includes a negative pressure pipe. The negative pressure pipe communicates with the connecting pipe, and the negative pressure pipe can provide negative pressure for the connecting pipe to drive at least part of the second airbag to axially contract in the telescopic channel and drive the first airbag to contract.

[0015] In an embodiment of the present application, the insertion part further includes a mounting pipe. The second airbag is arranged in the mounting pipe, and the mounting pipe is detachably mounted in the telescopic channel.

[0016] In an embodiment of the present application, the telescopic path of the telescopic section is within the visual field range of the camera module. The insertion body further includes an active bending section. The distal end of the active bending section is connected to the insertion body, the first airbag is arranged at the distal end of the active bending section, the active bending section is provided with a through hole penetrating inside and outside, the through hole communicates with the first airbag, and the distal end of the delivery pipe extends to the distal end of the active bending section and communicates with the through hole.

[0017] To achieve the above and other related objectives, the present application provides an endoscope, which includes the aforementioned insertion portion.

[0018] The technical solution adopted by the present invention can achieve the following beneficial effects: The insertion portion can be inserted into the body of a patient, the distal end of the insertion portion can extend near the lesion, and the camera module of the insertion main body can observe the condition of the lesion. Medical staff inject a medium (such as disinfected air, etc.) into the delivery tube, and the medium is injected into the first airbag. The first airbag expands to a preset volume. At this time, the first airbag can abut against the inner wall of the cavity in the patient to relatively fix the insertion main body and the inner wall of the cavity. At the same time, the first airbag is communicated with the telescopic section, and the medium can enter the telescopic section. Under the action of the medium, the telescopic section extends out of the front seat and extends to a preset position. The telescopic section is communicated with the expansion section. The medium is injected into the expansion section, and the expansion section expands and becomes larger. This setting can form a relatively closed detection space between the expansion section and the first airbag, and the lesion is within the detection space. At this time, a developing medium (such as a fluorescent liquid, etc.) is injected through the instrument tube. The detection space performs fluorescent labeling on the lesion, avoiding a large amount of loss of the fluorescent liquid, and reducing the amount of fluorescent liquid used. At the same time, as the loss of the fluorescent liquid decreases, the insertion portion can obtain clearer images while using less fluorescent liquid.

[0019] In addition, fluorescence detection is immediately realized during the insertion process of the insertion portion, greatly shortening the operation time and improving the surgical efficiency. Throughout the process, the lesion always remains stably within the field of view of the camera module, avoiding damage to the inner wall of the cavity by the first airbag and the second airbag, improving the use safety and handling convenience of the insertion portion, and reducing the surgical risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural diagram of the insertion portion shown in an exemplary embodiment of the present application;

[0022] Figure 2 is a cross-sectional view of the insertion portion shown in an exemplary embodiment of the present application;

[0023] Figure 3 is a cross-sectional view of another insertion portion shown in an exemplary embodiment of the present application;

[0024] Figure 4 is Figure 3 the enlarged view at a in

[0025] Figure 5 It is a schematic structural diagram of a first telescopic part and a second telescopic part shown in an exemplary embodiment of the present application;

[0026] Figure 6 It is a cross-sectional view of another insertion part shown in an exemplary embodiment of the present application;

[0027] Figure 7 It is a cross-sectional view of yet another insertion part shown in an exemplary embodiment of the present application;

[0028] Figure 8 It is a schematic structural diagram of an insertion part in a human organ shown in an exemplary embodiment of the present application;

[0029] Figure 9 It is a schematic structural diagram of a negative pressure tube and a second airbag shown in an exemplary embodiment of the present application;

[0030] Figure 10 It is a schematic structural diagram of an endoscope shown in an exemplary embodiment of the present application.

[0031] In the figure: 1. Endoscope; 100. Insertion part; 110. Insertion main body; 111. Front end seat; 112. Camera module; 113. Instrument channel; 114. Telescopic channel; 115. Connecting pipe; 116. First airbag; 117. First pressure valve; 120. Delivery pipe; 130. Instrument pipe; 140. Second airbag; 141. Expansion section; 142. Telescopic section; 143. Telescopic part; 1431. First telescopic part; 1432. Second telescopic part; 144. Second pressure valve; 145. Reflective layer; 150. Detection space; 160. Negative pressure tube; 170. Active bending section; 180. Installation pipe; 190. Through hole. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope protected by the present invention.

[0033] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0034] In the embodiments of this application, "proximal" and "distal" refer to the relative distances of each component from the user in the usage environment. Among them, the end closer to the user is designated as "proximal", and the end farther from the user is designated as "distal".

[0035] However, in actual operation, it is often necessary to inject an injection agent into the patient in advance and wait for a certain period of time before inserting the endoscope to observe the lesion contour. The waiting time is relatively long, the surgical efficiency is low, and the condition may be delayed.

[0036] This application provides an insertion part 100. Please refer to Figure 1 , the insertion part 100 is used for the endoscope 1. The insertion part 100 can be inserted into the human body cavity to realize the operation of the endoscope 1 for internal viewing of the human body cavity.

[0037] Please refer to Figure 1 and Figure 2 , the insertion part 100 may include an insertion main body 110, a delivery tube 120, an instrument tube 130, and a second airbag 140. The delivery tube 120 and the instrument tube 130 extend into the insertion main body 110, and the second airbag 140 is disposed in the insertion main body 110.

[0038] Please continue to refer to Figure 2 , the insertion main body 110 may include a front end seat 111 and a camera module 112. The camera module 112 is disposed in the front end seat 111. The front end seat 111 is provided with an instrument channel 113 and a telescopic channel 114. Exemplarily, the instrument channel 113 and the telescopic channel 114 axially penetrate the front end seat 111 so that the instrument channel 113 and the telescopic channel 114 can extend to the distal end of the front end seat 111.

[0039] Please refer back to Figure 2, the instrument tube 130 extends into the instrument channel 113. The instrument tube 130 can extend to the distal end of the instrument channel 113 and can insert a treatment instrument, such as a biopsy forceps, etc., for subsequent operations. Alternatively, the instrument tube 130 can inject a contrast medium (such as a fluorescent liquid, etc.) into the human body cavity. The contrast medium flows to the lesion site, and the imaging module 112 can observe the fluorescent image of the lesion. The fluorescent image is superimposed and fused with the white light image, and medical staff can observe the fluorescently labeled lesion in the white light mode to avoid removing important blood vessels and normal tissues, improve the surgical efficiency, and reduce the surgical risk.

[0040] Please continue to refer to Figure 2 , the delivery tube 120 is connected to the first balloon 116, and the delivery tube 120 is used to inject a medium into the first balloon 116. Medical staff deliver the medium to the proximal end of the delivery tube 120 to control the expansion volume of the first balloon 116 and avoid excessive squeezing of the human body cavity. In addition, medical staff can control the opening degree of the delivery tube 120 and the positive pressure source, etc., to change the flow rate and pressure of the medium, so that the expansion process of the first balloon 116 tends to be gentle, which is more conducive to medical staff's operation and reduces the discomfort of patients.

[0041] Please refer to Figure 3 , the outer surface of the insertion body 110 is provided with a first balloon 116, and the first balloon 116 can accommodate and store a certain volume or pressure of medium. Among them, the medium includes but is not limited to sterilized oxygen or air, etc. As the medium is continuously injected into the first balloon 116, the first balloon 116 expands and supports within the human body cavity wall. After the detection is completed, the first balloon 116 can contract to avoid the first balloon 116 hindering the extraction operation of the insertion part 100.

[0042] Furthermore, please continue to refer to Figure 2 and Figure 3 , the first balloon 116 is arranged at the distal end of the active bending section 170, and the active bending section 170 is provided with a through hole 190 penetrating inside and outside. In other words, the first balloon 116 can be arranged between the active bending section 170 and the front end seat 111. Among them, the installation method of the first balloon 116 can be bonding, ultrasonic welding, etc., which is not limited here. The through hole 190 communicates with the first balloon 116, and the distal end of the delivery tube 120 extends to the distal end of the active bending section 170 and communicates with the through hole 190. Exemplarily, the through hole 190 is opened between the active bending section 170 and the front end seat 111, and the first balloon 116 can be arranged at the distal end of the active bending section 170. The installer can first install the first balloon 116 on the active bending section 170 and then connect the active bending section 170 and the front end seat 111. This setting can enable the installer to install the first balloon 116 in a larger space, improving the installation efficiency of the first balloon 116.

[0043] It is understandable that the deformation amount of the first airbag 116 is affected by the internal medium volume or material. Inside the first airbag 116 of the same material, the larger the volume of the medium, the larger the deformation amount of the first airbag 116, and the larger the internal storage pressure value. Among them, the storage pressure value inside the first airbag 116 can be the pressure value of the medium inside the first airbag 116.

[0044] When the volume of the first airbag 116 is equal to the preset volume, the storage pressure value inside the first airbag 116 is equal to the first preset pressure value. This setting can prompt the volume of the first airbag 116 to directly affect the pressure of the first airbag 116, adjust the expansion size of the first airbag 116 and the extrusion force on the human body cavity wall, and can also ensure that the pressure value tends to be controllable, thereby ensuring that the first airbag 116 can stably support inside the human body cavity wall.

[0045] In a more specific embodiment, the insertion part 100 further includes a first pressure valve 117. The first pressure valve 117 is arranged between the first airbag 116 and the telescopic section 142. When the pressure value inside the first airbag 116 is greater than or equal to the first preset pressure value, the first pressure valve 117 opens, the first airbag 116 communicates with the telescopic section 142, and the medium can flow to the telescopic section 142. When the pressure value inside the first airbag 116 is less than the first preset pressure value, the first pressure valve 117 closes and isolates the first airbag 116 from the telescopic section 142. When the first airbag 116 is inflated, the first pressure valve 117 closes to ensure that the first airbag 116 can expand preferentially and support the human body cavity wall, which can relatively fix the insertion body 110 around the lesion and improve the subsequent detection accuracy and detection effect.

[0046] In this embodiment, please continue to refer to Figure 2 and Figure 3 , the second airbag 140 is located inside the telescopic channel 114. The second airbag 140 can include an expansion section 141 and a telescopic section 142. The telescopic section 142 can extend out of the front end seat 111. One end of the telescopic section 142 is connected to the front end seat 111, and the other end is connected to the expansion section 141. When the volume of the first airbag 116 is greater than or equal to the preset volume, the first airbag 116 communicates with the telescopic section 142. The medium drives the telescopic section 142 to extend out of the front end seat 111, and the telescopic section 142 drives the expansion section 141 in a direction away from the first airbag 116 (such as Figure 3The activity shown by L1 in [description] enables a detection space 150 to be formed between the expansion section 141 and the first airbag 116. During this process, the telescopic section 142 and the expansion section 141 are relatively independent, and the medium does not enter the expansion section 141, and the expansion section 141 is in a contracted state. The expansion section 141 in the contracted state has a smaller volume, and under the drive of the telescopic section 142, the expansion section 141 can extend into a narrow space. Moreover, the expansion section 141 with a small volume will not scrape the human body cavity wall, improving the safety of using the endoscope 1.

[0047] In one embodiment, please continue to refer to Figure 3 and Figure 4 , the insertion body 110 may further include a connecting pipe 115. One end of the connecting pipe 115 is connected to the first airbag 116, and the other end communicates with the telescopic section 142. When the first airbag 116 expands under external pressure or internal inflation, its medium can be transmitted to the telescopic section 142 through the connecting pipe 115. The first pressure valve 117 is disposed on the connecting pipe 115. By disposing the first pressure valve 117 on the connecting pipe 115, the connecting pipe 115 can provide a setting position for the first pressure valve 117, so that the first pressure valve 117 can control the inflation sequence of the first airbag 116 and the second airbag 140, improving the subsequent detection accuracy and detection effect.

[0048] Moreover, the connecting pipe 115 extends to the distal end of the telescopic section 142. This not only ensures that the medium can directly act on the distal end of the telescopic section 142, reducing the path length of the medium in the telescopic section 142, but also reducing the power loss of the medium transmitted to the distal end of the telescopic section 142, improving the effect of the medium, and also enabling the telescopic section 142 to gradually extend from the distal end to the proximal end after receiving the medium. The sequential extension of the telescopic section 142 can help medical staff more precisely control the distal position of the telescopic section 142, thereby achieving higher accuracy and safety during surgery or examination.

[0049] In this embodiment, please refer to Figure 3 and Figure 4 , the expansion section 141 is connected to the distal end of the telescopic section 142. The telescopic section 142 has a plurality of telescopic parts 143. The number of telescopic parts 143 includes but is not limited to 2, 3... or even more, and is not limited here. The plurality of telescopic parts 143 can axially contract within the telescopic channel 114. During the process of the telescopic section 142 extending out of the front end seat 111, the plurality of telescopic parts 143 are sequentially extended in the order from the distal end to the proximal end of the telescopic section 142. Exemplarily, as Figure 5As shown, a plurality of telescopic parts 143 may include a first telescopic part 1431 and a second telescopic part 1432. The first telescopic part 1431 and the second telescopic part 1432 are connected to each other, and both can be telescopically arranged. The first telescopic part 1431 and the second telescopic part 1432 are retracted into the telescopic channel 114. The first telescopic part 1431 is located on the side of the second telescopic part 1432 close to the expansion section 141. Along the order from the distal end to the proximal end of the telescopic section 142, the first telescopic part 1431 deforms and extends. Furthermore, the second telescopic part 1432 deforms and extends. Extending in this order successively can ensure that the plurality of telescopic parts 143 all deform within the telescopic channel 114. The telescopic channel 114 can limit the telescopic direction of the telescopic parts 143, avoiding the plurality of telescopic parts 143 telescoping in different directions, resulting in uncontrollable directions, improving the controllability of the telescopic direction of the telescopic section 142, and avoiding the telescopic section 142 colliding with the inner wall of the human body cavity.

[0050] In one embodiment, please continue to refer to Figure 3 , the telescopic section 142 can be configured as a corrugated pipe. A corrugated pipe is a tubular elastic element with axial corrugations. The corrugated pipe absorbs or compensates for the displacement, stress, and vibration generated by the pipeline through its own elastic deformation under the action of pressure or axial force. In other words, the corrugated pipe can deform and contract axially, and the corrugated pipe can also resist excessive deformation occurring in the radial direction, avoiding the collapse of the corrugated pipe under negative pressure conditions, ensuring the safe use of the telescopic section 142.

[0051] Preferably, as Figure 6 shown, the telescopic path of the telescopic section 142 is within the field of view of the imaging module 112. In other words, the imaging module 112 can collect the specific telescopic situation of the telescopic section 142. The insertion body 110 may further include an active bending section 170. The distal end of the active bending section 170 is connected to the insertion body 110. Under the operation of medical staff, the active bending section 170 can be bent. The distal end of the insertion body 110 is connected to the active bending section 170. During the bending process of the active bending section 170, the insertion body 110 can be arranged in multiple different directions. By controlling the active bending section 170, medical staff can adjust the position and orientation of the insertion body 110 so that the insertion body 110 can observe or treat the lesion.

[0052] It can be understood that the first airbag 116 abuts against the inner wall of the human body cavity. With the first airbag 116 as a fulcrum, the active bending section 170 can adjust its extending direction during the telescopic process of the telescopic section 142, so that the telescopic section 142 avoids the inner wall of the cavity, avoiding the risk of scraping. Among them, the first airbag 116 can provide a supporting effect, making the position or orientation of the insertion body 110 tend to be controllable, and avoiding phenomena such as dislocation or deviation of the insertion body 110 in the active bending section 170.

[0053] In this embodiment, please refer to Figure 6 and Figure 7 , the telescopic section 142 can move the expansion section 141 away from the first airbag 116, so that the first airbag 116 and the expansion section 141 are spaced apart to form a detection space 150. Under the operation of medical staff, the first airbag 116 and the expansion section 141 are distributed on opposite sides of the lesion, and the lesion is located within the detection space 150. As Figure 8 shown, when the telescopic section 142 extends to a preset position, the telescopic section 142 communicates with the expansion section 141. The medium can enter the expansion section 141, and the expansion section 141 expands and supports within the human body cavity wall c. The expansion section 141 and the first airbag 116 can block both ends of the detection space 150 to form a relatively closed detection space 150. Moreover, the lesion b is located within the detection space 150. At this time, a contrast medium (such as a fluorescent liquid, etc.) is injected through the instrument tube 130. The detection space 150 performs fluorescent marking on the lesion b, avoiding a large amount of loss of the fluorescent liquid, and reducing the usage amount of the fluorescent liquid. At the same time, as the loss of the fluorescent liquid decreases, the insertion portion 100 can obtain clearer images while using less fluorescent liquid. In addition, the above processes all occur during the insertion process of the insertion portion 100. In other words, fluorescence detection is achieved immediately during the insertion process of the insertion portion 100, greatly shortening the operation time and improving the surgical efficiency.

[0054] In a specific implementation manner, please refer to Figure 7 , the second airbag 140 may further include a second pressure valve 144. The second pressure valve 144 is disposed between the first airbag 116 and the telescopic section 142 and is located at the distal end of the telescopic section 142. When the telescopic section 142 extends to a preset position, at this time, the telescopic section 142 has completely extended. Subsequently, the pressure value of the telescopic section 142 continues to rise to a second preset pressure value, and the second pressure valve 144 opens, and the telescopic section 142 communicates with the expansion section 141, and the medium can flow into the expansion section 141. Among them, the first preset pressure value is less than the second preset pressure value. This setting can ensure that the expansion section 141 expands after the telescopic section 142 has completely extended. Compared with the expansion section 141 being driven by the telescopic section 142 after expansion, this setting can reduce the risk of the expansion section 141 scratching the human body cavity wall.

[0055] It can be understood that both the first pressure valve 117 and the second pressure valve 144 can be diaphragm valves. When the storage pressure value is greater than or equal to the first preset pressure value, this pressure difference will overcome the closing force of the diaphragm valve and cause it to open. It can be automatically opened, reducing the operation steps of medical staff. In addition, the diaphragm valve has the ability of one-way conduction. This setting can promote the one-way flow of the medium and avoid the reverse flow of the medium from affecting the extension or expansion effect of the second airbag 140.

[0056] Preferably, asFigure 7 As shown, a reflective layer 145 is provided outside the expansion section 141 and / or the telescopic section 142, that is, the reflective layer 145 is provided outside at least one of the expansion section 141 and the telescopic section 142, and the reflective layer 145 can reflect light. The reflective layer 145 can be formed by spraying or coating. Among them, the light can be generated by the illumination module of the insertion part 100. When the light irradiates on the reflective layer 145, the light will be reflected back in the original direction or scattered at a specific angle, thereby enhancing the light intensity in the area around the lesion. This setting can enhance the light intensity on the surface of the lesion, and it can also make the contour of the lesion tend to be clear, so that the imaging module 112 can clearly collect the specific conditions of the lesion, such as the size and location of the lesion.

[0057] In this embodiment, please refer to Figure 9 , the insertion part 100 may further include a negative pressure tube 160. The negative pressure tube 160 is connected to the connecting tube 115. The negative pressure tube 160 can provide negative pressure for the connecting tube 115 to drive at least part of the second airbag 140 to axially contract into the telescopic channel 114 and drive the first airbag 116 to contract. Exemplarily, the proximal end of the negative pressure tube 160 is connected to a negative pressure source, and its distal end extends to one end of the connecting tube 115 close to the telescopic section 142. When the negative pressure source starts to work, negative pressure is generated in the negative pressure tube 160, and a negative pressure atmosphere is also generated in the telescopic section 142. Under the action of the negative pressure, the telescopic section 142 contracts axially and enters the telescopic channel 114. Further, during the process of the telescopic section 142 contracting into the front seat 111, the plurality of telescopic parts 143 of the telescopic section 142 are retracted in sequence from the proximal end to the distal end of the telescopic section 142, avoiding the telescopic section 142 extending out and affecting the passing performance of the insertion part 100 during the subsequent process of pulling out the insertion part 100.

[0058] It can be understood that the negative pressure tube 160 can be provided with a branch, and the branch can directly extend to the side of the connecting tube 115 close to the first airbag 116 and communicate with the first airbag 116. The negative pressure tube 160 generates negative pressure, and it can also drive the first airbag 116 to contract, which will not be elaborated here.

[0059] In another case, please refer back to Figure 4, the insertion portion 100 may further include an installation tube 180. The second airbag 140 is disposed within the installation tube 180, and the installation tube 180 is detachably installed within the telescopic channel 114. The connection manner between the installation tube 180 and the front end seat 111 may be snap connection or threaded connection, etc., which is not limited in this embodiment. The provision of the installation tube 180 optimizes the installation operation of the second airbag 140. Specifically, the second airbag 140 may be pre-installed inside the installation tube 180, which allows the assembler to perform the installation in a relatively spacious and easy-to-operate environment, thus avoiding directly installing the second airbag 140 inside the narrow insertion portion 100. The pre-installation of the second airbag 140 and the subsequent installation of the entire installation tube 180 greatly simplify the installation process and also improve the installation accuracy and safety.

[0060] To achieve the above object and other related objects, the present application provides an endoscope 1. Please refer to Figure 10 , the endoscope 1 may include the aforementioned insertion portion 100. Thus, the endoscope 1 has the beneficial effects of any of the foregoing solutions, which will not be elaborated herein. The endoscope 1 of the embodiment of the present application may be a nephroscope, a bronchoscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, an oral endoscope, a laryngoscope, a vaginoscope, a laparoscope, an arthroscope, etc.

[0061] The technical solution adopted by the present invention can achieve the following beneficial effects: The insertion portion 100 can be inserted into the body of a patient, the distal end of the insertion portion 100 can extend to the vicinity of the lesion, and the imaging module 112 of the insertion main body 110 can observe the condition of the lesion. Medical staff inject a medium (such as disinfected air, etc.) into the delivery tube 120, and the medium is injected into the first airbag 116. The first airbag 116 expands to a preset volume. At this time, the first airbag 116 can abut against the wall of the cavity within the patient to relatively fix the insertion main body 110 to the wall of the cavity. At the same time, the first airbag 116 is in communication with the telescopic section 142, and the medium can enter the telescopic section 142. Under the action of the medium, the telescopic section 142 extends out of the front end seat 111 and extends to a preset position. The telescopic section 142 is in communication with the expansion section 141. The medium is injected into the expansion section 141, and the expansion section 141 expands and becomes larger. This setting can form a relatively closed detection space 150 between the expansion section 141 and the first airbag 116, and the lesion is located within the detection space 150. At this time, a developing medium (such as a fluorescent liquid, etc.) is injected through the instrument tube 130. The detection space 150 performs fluorescent labeling on the lesion, avoiding a large amount of loss of the fluorescent liquid and reducing the amount of fluorescent liquid used. At the same time, as the loss of the fluorescent liquid is reduced, the insertion portion 100 can obtain clearer images while using less fluorescent liquid.

[0062] In addition, fluorescence detection is achieved instantaneously during the insertion process of the insertion portion 100, greatly shortening the operation time and improving the surgical efficiency. Throughout the process, the lesion always remains stably within the field of view of the imaging module 112, avoiding damage to the inner wall of the cavity by the first airbag 116 and the second airbag 140, improving the use safety and handling convenience of the insertion portion 100, and reducing the surgical risk.

[0063] It should be noted that in this document, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0064] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0065] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An insertion portion for an endoscope, characterized in that, The insertion part includes: An insertion body, the insertion body includes a front end seat and an imaging module disposed within the front end seat. The front end seat is provided with an instrument channel and a telescopic channel, and a first airbag is disposed on the outer surface of the insertion body; A delivery tube, the delivery tube is connected to the first airbag for injecting a medium into the first airbag; An instrument tube, the instrument tube extends into the instrument channel; and A second airbag, the second airbag is located within the telescopic channel. The second airbag includes an expansion section and a telescopic section. The telescopic section can extend out of the front end seat. One end of the telescopic section is connected to the front end seat, and the other end is connected to the expansion section. When the telescopic section extends to a preset position, the telescopic section communicates with the expansion section; Wherein, when the volume of the first airbag is greater than or equal to a preset volume, the first airbag communicates with the telescopic section, and the medium drives the telescopic section to extend out of the front end seat and drives the expansion section to move in a direction away from the first airbag, so as to form a detection space between the expansion section and the first airbag, and a fluorescently labeled lesion is formed within the detection space.

2. The insertion part according to claim 1, characterized in that, When the volume of the first airbag is equal to the preset volume, the pressure value within the first airbag is equal to a first preset pressure value.

3. The insertion part according to claim 2, characterized in that, The insertion part further includes a first pressure valve, the first pressure valve is disposed between the first airbag and the telescopic section. When the pressure value within the first airbag is greater than or equal to the first preset pressure value, the first pressure valve opens, the first airbag communicates with the telescopic section, and the medium can flow to the telescopic section. When the pressure value within the first airbag is less than the first preset pressure value, the first pressure valve closes and isolates the first airbag from the telescopic section.

4. The insertion part according to claim 3, characterized in that, The insertion body further includes a connecting pipe, one end of the connecting pipe is connected to the first airbag, the other end communicates with the telescopic section and extends to the distal end of the telescopic section, and the first pressure valve is disposed on the connecting pipe.

5. The insertion part according to claim 4, characterized in that The expansion section is connected to the distal end of the telescopic section. The telescopic section has a plurality of telescopic parts, and the plurality of telescopic parts can axially contract within the telescopic channel. During the process of the telescopic section extending out of the front end seat, the plurality of telescopic parts are sequentially extended in the order from the distal end to the proximal end of the telescopic section.

6. The insertion part according to claim 4, characterized in that, The second airbag further includes a second pressure valve, the second pressure valve is disposed between the first airbag and the telescopic section and is located at the distal end of the telescopic section. When the telescopic section extends to a preset position, the pressure value of the telescopic section can rise to a second preset pressure value, the second pressure valve opens, the telescopic section communicates with the expansion section, and the medium can flow into the expansion section. The first preset pressure value is less than the second preset pressure value.

7. The insertion part according to claim 6, characterized in that, The telescopic section is configured as a corrugated pipe; And / or, the first pressure valve and the second pressure valve are diaphragm valves; And / or, a reflective layer is provided on the outer surface of the expansion section and / or the telescopic section.

8. The insertion part according to claim 4, characterized in that, The insertion part further includes a negative pressure tube, the negative pressure tube communicates with the communication tube, and the negative pressure tube can provide negative pressure for the communication tube to drive at least part of the second airbag to axially contract in the telescopic channel and drive the first airbag to contract; And / or, the insertion part further includes a mounting tube, the second airbag is arranged in the mounting tube, and the mounting tube is detachably mounted in the telescopic channel.

9. The insertion part according to any one of claims 1-7, characterized in that, The telescopic path of the telescopic section is within the field of view of the camera module. The insertion body further includes an active bending section. The distal end of the active bending section is connected to the insertion body. The first airbag is arranged at the distal end of the active bending section. The active bending section is provided with a through hole penetrating inside and outside, and the through hole communicates with the first airbag. The distal end of the delivery tube extends to the distal end of the active bending section and communicates with the through hole.

10. An endoscope, characterized in that, It includes the insertion part according to any one of claims 1-9.

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