Insertion part and endoscope

Abstract

The invention discloses an insertion part and an endoscope, and relates to the field of medical instruments.The insertion part comprises an insertion body, a conveying pipe, an instrument pipe and a second airbag, the insertion body comprises a front end base and a camera module arranged in the front end base, the front end base is provided with an instrument channel and a telescopic channel, and the outer surface of the insertion body is arranged in a first airbag; the second air bag is located in the telescopic channel and comprises an expansion section and a telescopic section, the telescopic section can stretch out of the front end base, one end of the telescopic section is connected with the front end base, and the other end of the telescopic section is connected with the expansion section. Through the arrangement, a relatively closed detection space can be formed between the expansion section and the first air bag, and a focus is located in the detection space. At this time, a developing medium is injected through the instrument tube. The detection space carries out fluorescence labeling on focuses to avoid loss of a large amount of fluorescent liquid and reduce the dosage of the fluorescent liquid. And meanwhile, the loss of the fluorescent liquid is reduced, and a clearer image can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an insertion portion and an endoscope. Background Art

[0002] Endoscope is a commonly used medical device. It is an inspection device that can directly enter the natural channels of the human body and provide doctors with sufficient diagnostic information to treat diseases. The existing endoscope camera module has a white light mode, which superimposes and fuses the fluorescent image onto the white light image. Doctors can observe the lesions marked by fluorescence in the white light mode to avoid removing important blood vessels and normal tissues, improve surgical efficiency, and reduce surgical risks.

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

[0004] In view of the above shortcomings of the related technologies, the present application provides an insertion portion and an endoscope to solve the above technical problems.

[0005] The present application provides an insertion portion for an endoscope, the insertion portion comprising an insertion body, a delivery tube, an instrument tube and a second airbag, the insertion body comprising a front end seat and a camera module arranged in the front end seat, the front end seat is provided with an instrument channel and a telescopic channel, the outer surface of the insertion body is provided with a first airbag, the delivery tube is connected to 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 comprises 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 is extended to a preset position, the telescopic section and the expansion section are connected to each other, wherein, when the volume of the first airbag is greater than or equal to the preset volume, the first airbag is connected to the telescopic section, 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 that a detection space is formed between the expansion section and the first airbag.

[0006] In one 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 the first preset pressure value.

[0007] In one embodiment of the present application, the insertion portion also includes a first pressure valve, which is arranged between the first airbag and the telescopic section. When the pressure value in the first airbag is greater than or equal to a first preset pressure value, the first pressure valve opens, the first airbag is connected to 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 one embodiment of the present application, the insertion body also includes a connecting tube, one end of which is connected to the first airbag, and the other end is connected to the telescopic section and extends to the distal end of the telescopic section. The first pressure valve is arranged on the connecting tube.

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

[0010] In one embodiment of the present application, the second airbag also includes a second pressure valve, which is arranged between the first airbag and the telescopic section and located at the far end of the telescopic section. When the telescopic section is extended to a preset position, the pressure value of the telescopic section can be increased to a second preset pressure value, the second pressure valve is opened, the telescopic section is connected to the expansion section, the medium can flow into the expansion section, and the first preset pressure value is less than the second preset pressure value.

[0011] In one embodiment of the present application, the telescopic section is configured as a bellows.

[0012] In one embodiment of the present application, the first pressure valve and the second pressure valve are diaphragms.

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

[0014] In one embodiment of the present application, the insertion portion also includes a negative pressure tube, which is connected to the connecting tube. The negative pressure tube can provide negative pressure for the connecting tube to drive at least a portion of the second airbag to shrink axially within the telescopic channel, and drive the first airbag to shrink.

[0015] In one embodiment of the present application, the insertion portion further includes a mounting tube, the second airbag is disposed in the mounting tube, and the mounting tube is detachably mounted in the telescopic channel.

[0016] In one embodiment of the present application, the telescopic path of the telescopic section is located within the field of view of the camera module, the insertion body also 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 running through the inside and outside, the through hole is connected to the first airbag, and the distal end of the delivery tube extends to the distal end of the active bending section and is connected to the through hole.

[0017] To achieve the above-mentioned purpose and other related purposes, 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 part can be inserted into the patient's body, the distal end of the insertion part can extend to the vicinity of the lesion, and the camera module of the insertion body can observe the lesion. The medical staff injects a medium (such as sterilized air, etc.) into the delivery tube, and the medium is injected into the first airbag. The first airbag expands to a preset volume, and the first airbag can abut the cavity wall in the patient so that the insertion body and the cavity wall are relatively fixed. At the same time, the first airbag is connected to 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 connected to 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 in the detection space. At this time, the developing medium (such as fluorescent liquid, etc.) is injected through the instrument tube. The detection space performs fluorescent marking on the lesion to avoid a large amount of loss of fluorescent liquid, and the amount of fluorescent liquid can be reduced. At the same time, the loss of fluorescent liquid is reduced, and the insertion part can obtain a clearer image while using less fluorescent liquid.

[0019] In addition, fluorescence detection is performed immediately during the insertion of the insertion part, which greatly shortens the operation time and improves the efficiency of the operation. During the entire process, the lesion is always stably within the field of view of the camera module, preventing the first and second airbags from damaging the inner wall of the cavity, improving the safety and convenience of the insertion part, and reducing the risk of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a schematic structural diagram of an insertion portion shown in an exemplary embodiment of the present application; Figure 2 is a cross-sectional view of an insertion portion shown in an exemplary embodiment of the present application; Figure 3 is a cross-sectional view of another insertion portion shown in an exemplary embodiment of the present application; Figure 4 yes Figure 3 The enlarged view of point a in the figure; Figure 5is a schematic structural diagram of a first telescopic portion and a second telescopic portion shown in an exemplary embodiment of the present application; Figure 6 is a cross-sectional view of another insertion portion shown in an exemplary embodiment of the present application; Figure 7 is a cross-sectional view of yet another insertion portion shown in an exemplary embodiment of the present application; Figure 8 is a schematic structural diagram of an insertion portion in a human organ shown in an exemplary embodiment of the present application; Fig. 9 is a schematic structural diagram of a negative pressure tube and a second air bag shown in an exemplary embodiment of the present application; Fig.10 It is a schematic diagram of the structure of an endoscope shown in an exemplary embodiment of the present application.

[0022] In the figure: 1, endoscope; 100, insertion part; 110, insertion 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 DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0024] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one 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 specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0025] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0026] However, in actual operation, it is often necessary to inject an injection 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 long, the operation efficiency is low, and the disease may be delayed.

[0027] The present application provides an insertion portion 100, see Figure 1 The insertion portion 100 is used for the endoscope 1. The insertion portion 100 can be inserted into a human cavity to achieve the operation of the endoscope 1 to view the human cavity.

[0028] See also Figure 1 as well as Figure 2 The insertion portion 100 may include an insertion 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 body 110 , and the second airbag 140 is disposed in the insertion body 110 .

[0029] Please continue reading Figure 2 The insertion body 110 may include a front end seat 111 and a camera module 112, and 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 penetrate the front end seat 111 in the axial direction, so that the instrument channel 113 and the telescopic channel 114 can extend to the distal end of the front end seat 111.

[0030] Please review Figure 2 , the instrument tube 130 extends into the instrument channel 113, and the instrument tube 130 can extend to the distal end of the instrument channel 113, and the instrument tube 130 can be inserted with a treatment instrument, such as a biopsy forceps, for subsequent operations. Alternatively, the instrument tube 130 can inject a developing medium (such as fluorescent liquid, etc.) into the human body cavity, and the developing medium flows to the lesion, and the camera module 112 can observe the fluorescent image of the lesion. The fluorescent image is superimposed and fused to the white light image, and medical staff can observe the fluorescently marked lesions in the white light mode to avoid removing important blood vessels and normal tissues, improve surgical efficiency, and reduce surgical risks.

[0031] Please continue reading Figure 2The delivery tube 120 is connected to the first airbag 116, and the delivery tube 120 is used to inject the medium into the first airbag 116. The medical staff delivers the medium to the proximal end of the delivery tube 120 to control the expansion volume of the first airbag 116 to prevent it from over-extruding the human body cavity. In addition, the medical staff can change the flow rate and pressure of the medium by controlling the opening of the delivery tube 120 and the positive pressure source, so that the expansion process of the first airbag 116 tends to be smooth, which is more conducive to the operation of the medical staff and reduces the discomfort of the patient.

[0032] See also Figure 3 The outer surface of the insertion body 110 is provided with a first airbag 116, which can accommodate and store a medium of a certain volume or pressure. The medium includes but is not limited to sterilized oxygen or air. As the medium is continuously injected into the first airbag 116, the first airbag 116 expands and is supported in the human body cavity wall. When the detection is completed, the first airbag 116 can shrink to prevent the first airbag 116 from obstructing the removal operation of the insertion part 100.

[0033] For further information, please refer to Figure 2 as well as Figure 3 , the first airbag 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 that runs through the inside and outside. In other words, the first airbag 116 can be arranged between the active bending section 170 and the front end seat 111. Among them, the installation method of the first airbag 116 can be bonding, ultrasonic welding, etc., which is not limited here. The through hole 190 is connected to the first airbag 116, and the distal end of the delivery tube 120 extends to the distal end of the active bending section 170 and is connected to 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 airbag 116 can be arranged at the distal end of the active bending section 170. The installer can first install the first airbag 116 on the active bending section 170, and then connect the active bending section 170 and the front end seat 111. This setting allows the installer to perform the installation operation of the first airbag 116 in a larger space, thereby improving the installation efficiency of the first airbag 116.

[0034] It is understandable that the deformation of the first airbag 116 is affected by the volume or material of the medium inside. In the first airbag 116 of the same material, the larger the volume of the medium, the larger the deformation of the first airbag 116, and the larger the internal storage pressure value. The storage pressure value inside the first airbag 116 can be the pressure value of the medium inside the first airbag 116.

[0035] When the volume of the first airbag 116 is equal to the preset volume, the storage pressure value in the first airbag 116 is equal to the first preset pressure value. This setting can cause 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 squeezing force on the human body cavity wall, and also ensure that the pressure value tends to be controllable, thereby ensuring that the first airbag 116 can be stably supported in the human body cavity wall.

[0036] In a more specific embodiment, the insertion part 100 further includes a first pressure valve 117, which is disposed between the first airbag 116 and the telescopic section 142. When the pressure value in the first airbag 116 is greater than or equal to the first preset pressure value, the first pressure valve 117 is opened, the first airbag 116 is connected to the telescopic section 142, and the medium can flow to the telescopic section 142. When the pressure value in the first airbag 116 is less than the first preset pressure value, the first pressure valve 117 is closed, and the first airbag 116 is isolated from the telescopic section 142. When the first airbag 116 is inflated, the first pressure valve 117 is closed to ensure that the first airbag 116 can expand first 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.

[0037] In this example, please continue to refer to Figure 2 as well as Figure 3 , the second airbag 140 is located in the telescopic channel 114, and the second airbag 140 may include an expansion section 141 and a telescopic section 142. The telescopic section 142 can extend out of the front seat 111, and one end of the telescopic section 142 is connected to the front 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 is connected to the telescopic section 142. The medium drives the telescopic section 142 to extend out of the front seat 111, and the telescopic section 142 drives the expansion section 141 to move away from the first airbag 116 (such as Figure 3 L1 in the figure) moves to form a detection space 150 between the expansion section 141 and the first airbag 116. In this process, the telescopic section 142 and the expansion section 141 are relatively independent, and the medium does not reach the expansion section 141, and the expansion section 141 is in a contracted state. The expansion section 141 in the contracted state is smaller in volume, and driven by the telescopic section 142, the expansion section 141 can extend into a narrow space. In addition, the small-volume expansion section 141 will not scratch the wall of the human body cavity, thereby improving the safety of the endoscope 1.

[0038] In one embodiment, please refer to Figure 3 as well as Figure 4The insert body 110 may further include a connecting tube 115, one end of which is connected to the first airbag 116, and the other end of which is connected to the telescopic section 142. When the first airbag 116 is expanded by external pressure or internal inflation, its medium can be transferred to the telescopic section 142 through the connecting tube 115. The first pressure valve 117 is disposed on the connecting tube 115, and the connecting tube 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, thereby improving the subsequent detection accuracy and detection effect.

[0039] Furthermore, the connecting tube 115 extends to the distal end of the telescopic section 142, which 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 reduces the power loss of the medium being transported to the distal end of the telescopic section 142, improving the effect of the medium, and also enables 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 accurately control the distal position of the telescopic section 142, thereby achieving higher accuracy and safety during surgery or examination.

[0040] In this example, see Figure 3 as well as 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, which is not limited here. The plurality of telescopic parts 143 can be axially contracted in the telescopic channel 114. When the telescopic section 142 extends out of the front end seat 111, the plurality of telescopic parts 143 extend in sequence from the distal end to the proximal end of the telescopic section 142. For example, Figure 5 As shown, the multiple 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, and the first telescopic part 1431 is located on the side of the second telescopic part 1432 close to the expansion section 141. In the order from the distal end to the proximal end of the telescopic section 142, the first telescopic part 1431 is deformed and extended. Furthermore, the second telescopic part 1432 is deformed and extended. Extending in sequence in this order can ensure that the multiple telescopic parts 143 are deformed in the telescopic channel 114, and the telescopic channel 114 can limit the telescopic direction of the telescopic part 143, avoid the multiple telescopic parts 143 to telescope in different directions, and cause the direction to be uncontrollable, improve the controllability of the telescopic direction of the telescopic section 142, and avoid the telescopic section 142 colliding with the human body cavity wall.

[0041] In one embodiment, please refer to Figure 3 The expansion section 142 can be configured as a bellows. A bellows is a tubular elastic element with axial corrugations. The bellows absorbs or compensates for the displacement, stress and vibration generated by the pipeline through its own elastic deformation when subjected to pressure or axial force. In other words, the bellows can deform and shrink along the axial direction, and the bellows can also resist excessive deformation in the radial direction, avoiding the bellows from collapsing under negative pressure conditions, thereby ensuring the safe use of the expansion section 142.

[0042] Preferably, if Figure 6 As shown, the telescopic path of the telescopic section 142 is within the field of view of the camera module 112. In other words, the camera module 112 can collect the specific telescopic conditions of the telescopic section 142. The insertion body 110 can also include an active bending section 170, and 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, and the insertion body 110 is connected to the distal end of the active bending section 170. During the bending process of the active bending section 170, the insertion body 110 can be set in a plurality of different directions. By controlling the active bending section 170, the 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.

[0043] It is understandable that the first airbag 116 abuts against the inner wall of the human body's cavity. With the first airbag 116 as a fulcrum, the active bending section 170 can adjust its extension direction during the extension and retraction of the telescopic section 142, so that the telescopic section 142 avoids the inner wall of the cavity to avoid the risk of scratching. Among them, the first airbag 116 can provide a supporting effect to make the position or direction of the insertion body 110 tend to be controllable, and avoid the insertion body 110 from being dislocated or offset in the active bending section 170.

[0044] In this example, see Figure 6 as well as Figure 7 The telescopic section 142 can bring the expansion section 141 away from the first airbag 116, so that the first airbag 116 and the expansion section 141 are spaced apart and form a detection space 150. Under the operation of the medical staff, the first airbag 116 and the expansion section 141 are distributed on opposite sides of the lesion, and the lesion is in the detection space 150. Figure 8As shown, when the telescopic section 142 is extended to the preset position, the telescopic section 142 is connected to the expansion section 141. The medium can enter the expansion section 141, and the expansion section 141 expands and is supported in the human body cavity wall c. The expansion section 141 and the first airbag 116 can block the two ends of the detection space 150 to form a relatively closed detection space 150. In addition, the lesion b is in the detection space 150. At this time, the developing medium (such as fluorescent liquid, etc.) is injected through the instrument tube 130. The detection space 150 performs fluorescent marking on the lesion b to avoid a large amount of fluorescent liquid loss, which can reduce the amount of fluorescent liquid. At the same time, the loss of fluorescent liquid is reduced, and the insertion part 100 can obtain a clearer image while using less fluorescent liquid. In addition, the above process occurs during the insertion process of the insertion part 100. In other words, the fluorescent detection is realized immediately during the insertion process of the insertion part 100, the operation time is greatly shortened, and the surgical efficiency is improved.

[0045] In a specific embodiment, see Figure 7 , the second airbag 140 may also include a second pressure valve 144, which is arranged between the first airbag 116 and the telescopic section 142 and located at the distal end of the telescopic section 142. When the telescopic section 142 extends to the preset position, the telescopic section 142 is fully extended. Subsequently, the pressure value of the telescopic section 142 continues to increase to the second preset pressure value, the second pressure valve 144 opens, the telescopic section 142 is connected to 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 again after the telescopic section 142 is fully 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.

[0046] It is understandable that both the first pressure valve 117 and the second pressure valve 144 can be membrane flaps. 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 membrane flap and open it. It can open automatically, reducing the operation steps of medical staff. In addition, the membrane flap has the ability of unidirectional conduction. This setting can promote the unidirectional flow of the medium and prevent the medium from flowing in reverse and affecting the extension or expansion effect of the second airbag 140.

[0047] Preferably, if Figure 7As shown, the expansion section 141 and / or the telescopic section 142 are provided with a reflective layer 145, that is, at least one of the expansion section 141 and the telescopic section 142 is provided with a reflective layer 145, 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 irradiation of the lighting module of the insertion part 100. When the light is irradiated on the reflective layer 145, the light will be reflected back to 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 outline of the lesion clearer, so that the camera module 112 can clearly capture the specific situation of the lesion, such as the size and position of the lesion.

[0048] In this example, see Fig. 9 The insertion part 100 may further include a negative pressure tube 160, which is connected to the connecting tube 115. The negative pressure tube 160 can provide negative pressure to the connecting tube 115 to drive at least part of the second airbag 140 to shrink axially in the telescopic channel 114, and drive the first airbag 116 to shrink. Exemplarily, the proximal end of the negative pressure tube 160 is connected to the negative pressure source, and the distal end thereof extends to an 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 shrinks along its axial direction and enters the telescopic channel 114. Furthermore, during the process of the telescopic section 142 contracting into the front end seat 111, the multiple 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, thereby preventing the telescopic section 142 from extending and affecting the passability of the insertion part 100 during the subsequent process of pulling out the insertion part 100.

[0049] It is understandable that the negative pressure tube 160 may be provided with a branch, which may 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, which can also drive the first airbag 116 to contract, which will not be described in detail here.

[0050] In either case, please refer to Figure 4The insertion portion 100 may further include a mounting tube 180, in which the second airbag 140 is disposed, and the mounting tube 180 is detachably mounted in the telescopic channel 114. The connection between the mounting tube 180 and the front end seat 111 may be a snap connection or a threaded connection, etc., which is not limited in this embodiment. The provision of the mounting tube 180 may optimize the installation operation of the second airbag 140. Specifically, the second airbag 140 may be pre-installed inside the mounting tube 180, which allows the assembler to perform the operation in a relatively spacious and easy-to-operate environment, thereby avoiding the direct installation of 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 mounting tube 180 greatly simplify the installation process and also improve the installation accuracy and safety.

[0051] To achieve the above-mentioned and other related purposes, the present application provides an endoscope 1, see Fig.10 , the endoscope 1 may include the aforementioned insertion portion 100. In this way, the endoscope 1 has the beneficial effects of any of the aforementioned solutions, which will not be repeated here. The endoscope 1 of the embodiment of the present application can be a nephroscope, a bronchoscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc.

[0052] The technical solution adopted by the present invention can achieve the following beneficial effects: the insertion part 100 can be inserted into the patient's body, the distal end of the insertion part 100 can extend to the vicinity of the lesion, and the camera module 112 of the insertion body 110 can observe the lesion. Medical staff injects a medium (such as sterilized 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, and at this time the first airbag 116 can abut against the cavity wall in the patient, so that the insertion body 110 is relatively fixed to the cavity wall. At the same time, the first airbag 116 is connected to 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 connected to 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 in the detection space 150. At this time, a developing medium (such as fluorescent liquid) is injected through the instrument tube 130. The detection space 150 performs fluorescent marking on the lesion to avoid a large amount of loss of fluorescent liquid, thereby reducing the amount of fluorescent liquid used. At the same time, as the loss of fluorescent liquid is reduced, the insertion part 100 can obtain a clearer image while using less fluorescent liquid.

[0053] In addition, fluorescence detection is performed immediately during the insertion of the insertion part 100, which greatly shortens the operation time and improves the efficiency of the operation. During the entire process, the lesion is always stably within the field of view of the camera module 112, preventing the first airbag 116 and the second airbag 140 from damaging the inner wall of the cavity, improving the safety and convenience of the insertion part 100, and reducing the risk of the operation.

[0054] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0055] In addition, it should be noted 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 a 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. In addition, features described with reference to certain examples may be combined in other examples.

[0056] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insertion portion for an endoscope, characterized in that: The inserting portion comprises: An insertion body, the insertion body comprising a front end seat and a camera module arranged in the front end seat, the front end seat is provided with an instrument channel and a telescopic channel, and a first airbag is arranged on the outer surface of the insertion body; a delivery tube, the delivery tube being connected to the first airbag and used for injecting a medium into the first airbag; an instrument tube, the instrument tube extending into the instrument channel; and a second airbag, the second airbag being located in the telescopic channel, the second airbag comprising an expansion section and a telescopic section, the telescopic section being able to extend out of the front end seat, one end of the telescopic section being connected to the front end seat, and the other end being connected to the expansion section, and when the telescopic section is extended to a preset position, the telescopic section and the expansion section are communicated with each other; Among them, when the volume of the first airbag is greater than or equal to the preset volume, the first airbag is connected to the telescopic section, 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 that a detection space is formed between the expansion section and the first airbag.

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

3. The insertion portion according to claim 2, characterized in that: The insertion portion also includes a first pressure valve, which 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 is opened, the first airbag is connected to 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 is closed and isolates the first airbag from the telescopic section.

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

5. The insertion portion 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. The plurality of telescopic parts can be axially contracted in the telescopic channel. In the process of the telescopic section extending out of the front end seat, the plurality of telescopic parts are sequentially extended from the distal end to the proximal end of the telescopic section.

6. The insertion portion according to claim 4, characterized in that: The second airbag also includes a second pressure valve, which is arranged between the first airbag and the telescopic section and located at the distal end of the telescopic section. When the telescopic section is extended to a preset position, the pressure value of the telescopic section can be increased to a second preset pressure value. The second pressure valve is opened, the telescopic section is connected to 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 portion according to claim 6, characterized in that The telescopic section is configured as a bellows; And / or, the first pressure valve and the second pressure valve are diaphragms; And / or, a reflective layer is provided outside the expansion section and / or the telescopic section.

8. The insertion portion according to claim 4, characterized in that: The insertion portion further includes a negative pressure tube, the negative pressure tube is connected to the connecting tube, and the negative pressure tube can provide negative pressure to the connecting tube to drive at least a portion of the second airbag to shrink axially in the telescopic channel, and drive the first airbag to shrink; And / or, the insertion portion further includes a mounting tube, the second airbag is disposed in the mounting tube, and the mounting tube is detachably mounted in the telescopic channel.

9. The insertion portion according to any one of claims 1 to 7, characterized in that: The telescopic path of the telescopic section is located within the field of view of the camera module. The insertion body also includes an active bending section, the distal end of which 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 that runs through the inside and outside, the through hole is connected to the first airbag, and the distal end of the delivery tube extends to the distal end of the active bending section and is connected to the through hole.

10. An endoscope, characterized in that: Comprising the insertion portion according to any one of claims 1-9.

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