Insertion part, endoscope and control system

Abstract

The invention discloses an insertion part, an endoscope and a control system, and relates to the field of medical instruments.The insertion part comprises a camera module, an instrument tube and a marking structure, the camera module is arranged at the far end of the insertion part, the instrument tube is provided with an instrument channel, the instrument channel penetrates through the two opposite ends of the insertion part, and the instrument channel is used for circulating a medium; the marking structure is adjacent to the camera module, and the marking structure is used for marking the flow path of the medium in the field of view of the camera module. The instrument tube is used for injecting a medium, the sheath tube provides a suction environment, the marking structure can present a flowing path of the medium on the camera module, a medical worker can observe the flowing path of the medium through the camera module, and the marking structure visualizes the flowing path of the medium. Furthermore, medical staff can clearly observe the distance between the flowing path and the calculus, the sheathing canal and the endoscope can be rapidly adjusted according to the relative position relation of the flowing path and the calculus, the use efficiency of the endoscope is improved, and the lithotripsy operation time is shortened.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, and in particular to an insertion part, an endoscope and a control system. Background Art

[0002] Guide sheaths and endoscopes are high-precision medical devices specially designed and widely used in the field of urinary system inspection and treatment. As an auxiliary tool, the guide sheath is usually used to guide the endoscope or other medical devices into the urinary system to ensure the accuracy and safety of the operation. Its design fully considers the physiological structure of the human urinary system, can effectively reduce trauma and complications during surgery, and improve the success rate of surgery and the speed of patient recovery.

[0003] When using a guide sheath and an endoscope to remove kidney stones, the guide sheath can be placed into the kidney using a guide wire, and then the insertion portion of the endoscope can be inserted into the sheath to observe and break up the stones. The instrument tube of the endoscope can inject media including saline toward the renal pelvis. After the stones are broken, the sheath can provide a negative pressure environment to suck the media and stones into the gap between the sheath and the insertion portion, thereby expelling the stones. During this period, the media can optimize the expulsion of the stones.

[0004] Therefore, after the stone is broken, the guide sheath and the endoscope often need to be constantly adjusted to change the relative distance between the stone and the guide sheath, until the stone is within the suction range of the endoscope and the guide sheath, so that the stone can be sucked out by the guide sheath, which greatly increases the time of the lithotripsy operation. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the related technology, the present application provides an insertion portion, an endoscope and a control system to solve the above-mentioned technical problems.

[0006] The present application provides an insertion portion of an endoscope, which includes a camera module, an instrument tube and a marking structure. The camera module is arranged at the distal end of the insertion portion, the instrument tube has an instrument channel, the instrument channel runs through the opposite ends of the insertion portion, and the instrument channel is used for circulating a medium. The marking structure is arranged adjacent to the camera module, and the marking structure is used to mark the flow path of the medium within the field of view of the camera module.

[0007] In one embodiment of the present application, the marking structure includes a follower line, which includes a free end and a fixed end that are far away from each other, the fixed end is arranged in the instrument tube, and the free end extends out of the distal end of the instrument tube.

[0008] In one embodiment of the present application, the marking structure includes a marking member, a piston and a driving assembly. The marking member has a marking cavity, which is connected to the instrument channel. The marking cavity is used to contain a marking liquid. The piston is located in the marking cavity and slidably cooperates with the marking member. The driving assembly is transmission-connected to the piston.

[0009] In one embodiment of the present application, a through hole is formed in the marking member, and the through hole is connected between the marking cavity and the instrument channel. The driving assembly includes a first elastic member and a pull rope. The first elastic member is transmission-connected to the piston. The first elastic member is used to drive the piston to move toward a direction close to the through hole. The distal end of the pull rope is connected to the piston and is used to drive the piston to move toward a direction away from the through hole.

[0010] In one embodiment of the present application, the marking member is disposed at the distal end of the insertion portion, and a flexible sealing member is configured at the distal end of the marking member. The flexible sealing member defines a first injection port, and the first injection port is communicated with the marking cavity.

[0011] In one embodiment of the present application, the marking structure further includes a sliding seal, the sliding seal is provided with a second injection port, the first injection port and the second injection port are arranged opposite to each other, the sliding seal is located at the distal end of the marking member, and is slidably matched with the marking member, and the sliding seal is used to seal the through hole when the marking liquid is injected into the marking cavity; The marking member also includes a second elastic member, which is arranged between the flexible seal and the sliding seal. The second elastic member is used to drive the sliding seal to move to open the through hole after the marking liquid is injected into the marking cavity.

[0012] In one embodiment of the present application, a one-way membrane flap is provided in the through hole, and the marking liquid can flow in one direction from the marking cavity to the instrument channel.

[0013] In one embodiment of the present application, the insertion portion is used to insert the sheath tube and is offset relative to the sheath tube. In the direction from the camera module to the instrument tube, the axis of the sheath tube and the axis of the insertion portion are distributed in sequence.

[0014] In one embodiment of the present application, the camera module and the marking structure are integrated to form a front-end component.

[0015] To achieve the above-mentioned purpose and other related purposes, the present application provides an endoscope, including the aforementioned insertion portion.

[0016] To achieve the above-mentioned purpose and other related purposes, the present application provides a control system, which is applied to the aforementioned endoscope, wherein the insertion portion of the endoscope is inserted into the sheath tube, and the control system includes a first pressure control module, a second pressure control module, and a control module, wherein the first pressure control module is connected to the instrument tube and is used to control the flow pressure value of the medium in the instrument tube, the second pressure control module is connected to the sheath tube and is used to control the flow pressure value of the medium in the sheath tube, and the control module is electrically connected to the first pressure control module, the second pressure control module, and the camera module; Among them, the camera module is used to obtain the flow path of the marking medium and transmit it to the control module. The control module is used to compare the flow path with the preset path, and adjust the medium flow pressure value in the instrument tube and / or sheath tube according to the comparison result of the flow path and the preset path.

[0017] The technical solution adopted by the present invention can achieve the following beneficial effects: the instrument tube is used to inject the medium, the sheath tube provides a suction environment, the marking structure can present the flow path of the medium in front of the camera module, the medical staff can observe the flow path of the medium through the camera module, and the marking structure visualizes the flow path of the medium. Furthermore, the medical staff can clearly observe the distance between the flow path and the stone, and quickly adjust the sheath tube and the endoscope according to the relative position relationship between the two, so as to improve the use efficiency of the endoscope and reduce the time of lithotripsy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 is a schematic structural diagram of an insertion portion and a sheath tube shown in an exemplary embodiment of the present application; Figure 2 is a schematic structural diagram of an insertion portion shown in an exemplary embodiment of the present application; Figure 3 is a structural schematic diagram of a marking structure shown in an exemplary embodiment of the present application; Figure 4 is a cross-sectional view of an insertion portion and a sheath tube shown in an exemplary embodiment of the present application; Figure 5 yes Figure 4 The enlarged view of point a in the figure; Figure 6 is a schematic diagram of an exemplary embodiment of the present application showing the structure of an insertion portion and a sheath tube located in the renal pelvis; Figure 7 yes Figure 6 The enlarged view of point c in the figure; Figure 8 yes Figure 4 The enlarged view of point b in the figure; Fig. 9 is a schematic structural diagram of a flexible seal and a sliding seal in another state shown in an exemplary embodiment of the present application; Fig.10 is a schematic structural diagram of another insertion portion and sheath tube shown in an exemplary embodiment of the present application; Fig.11 is a schematic structural diagram of an endoscope shown in an exemplary embodiment of the present application; Fig.12 It is a structural schematic diagram of a control system shown in an exemplary embodiment of the present application.

[0020] In the figure: 1. endoscope; 100. insertion part; 110. camera module; 111. camera head; 112. light source; 120. instrument tube; 121. instrument channel; 130. marking structure; 131. follow-up line; 1311. free end; 1312. fixed end; 132. marking member; 1321. marking cavity; 133. piston; 134. drive assembly; 1341. first elastic member; 1342. pull rope; 135. through hole; 136. flexible sealing member; 1361. first injection port; 137. sliding sealing member; 1371. second injection port; 1372. sealing part; 138. second elastic member; 139. disposal instrument; 2. sheath; 3. control system; 310. first pressure control module; 320. second pressure control module; 330. control module. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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".

[0024] The present application provides an insertion portion 100 of an endoscope 1, see Figure 1 The insertion portion 100 may include a camera module 110 , an instrument tube 120 and a marking structure 130 , and the marking structure 130 is disposed adjacent to the camera module 110 and the instrument tube 120 .

[0025] The camera module 110 is disposed at the distal end of the insertion portion 100. The insertion portion 100 has an active bending section or a passive bending section, and the following description takes the active bending section as an example. Exemplarily, under the control of medical staff, the distal end of the insertion portion 100 can be rotated to a specified direction, and then the camera module 110 can obtain an image signal at a specified position, so that the medical staff can observe and control the device to perform treatment operations.

[0026] Specifically, see Figure 2 The camera module 110 may include a camera 111 and a light source 112. The light source 112 can illuminate the environment in front of the insertion part 100. The camera 111 can obtain image information in front of the insertion part 100 and transmit it to a display device for medical staff to observe or analyze and perform corresponding treatment operations.

[0027] The instrument tube 120 has an instrument channel 121, which runs through the opposite ends of the insertion part 100, and the instrument channel 121 is used to circulate the medium. Among them, the medium can be physiological saline, contrast agent, etc., and this implementation does not limit the type of medium, but is limited by the specific implementation purpose and implementation scenario. Exemplarily, the medium can be injected from the proximal end of the instrument channel 121 and flow to the distal end of the instrument tube 120 through the instrument channel 121. The distal end of the instrument tube 120 can be located at the distal end of the insertion part 100, and the distal end of the insertion part 100 can extend into a human cavity or organ, and the medium can flow into a human cavity or organ, such as a renal pelvis, a bronchus, etc.

[0028] In some other cases, the instrument channel 121 can also be used to insert a treatment instrument 139, such as a biopsy forceps, a laser device, etc., and the specific function of the instrument channel 121 is not limited. In addition, it is understandable that the instrument channel 121 can be injected with a medium while inserting the treatment instrument 139 to implement more complex functions. Exemplarily, the insertion portion 100 is inserted into the renal pelvis. While the instrument channel 121 can be injected with saline, a laser device can also be inserted into the instrument channel 121. The laser device can break up the stones in the renal pelvis, and the stones are broken into stone particles. Saline can drive the stone particles to be discharged, and saline can improve the discharge effect of the stones, balance the pressure inside the renal pelvis, and improve the success rate of stone surgery.

[0029] It is understandable that the endoscope 1 is used to be inserted into the sheath 2, and the sheath 2 can guide the endoscope 1 into the urinary system to ensure the accuracy and safety of the operation. Its design fully considers the physiological structure of the human urinary system, can effectively reduce the trauma and complications during the operation, and improve the success rate of the operation and the patient's recovery speed. Exemplarily, when using the sheath 2 and the endoscope 1 to remove kidney stones, the sheath 2 can be inserted into the kidney using a guide wire, and then the insertion part 100 of the endoscope 1 is inserted into the sheath 2, so as to observe and crush the stones. After the stones are crushed, the insertion part 100 is injected with a medium, and the sheath 2 is used to provide a negative pressure environment to suck the stones into the gap between the sheath 2 and the insertion part 100, so as to discharge the stones.

[0030] After the stone is broken, the guide sheath and the endoscope 1 often need to be constantly adjusted in position so that the stone particles can be sucked out by the guide sheath, which greatly increases the time of the lithotripsy operation. Figure 1The marking structure 130 is used to mark the flow path of the medium within the field of view of the camera module 110. The marking structure 130 can mark the flow path of the medium and improve the visibility of the medium. Furthermore, the camera module 110 can clearly obtain the flow path of the medium, and the medical staff can adjust the relative position between the flow path and the stone so that the medium can act on the stone particles. The medium pushes the stone and is discharged from the body through the gap between the sheath 2 and the insertion part 100. The marking device can significantly improve the operating effect of the endoscope 1. The medical staff can clearly observe the distance between the flow path and the stone, and quickly adjust the sheath 2 and the endoscope 1 according to the relative position relationship between the two, so as to improve the use efficiency of the endoscope 1 and reduce the time of lithotripsy.

[0031] In one embodiment, see Figure 3 , the marking structure 130 may include a follower line 131, and the follower line 131 may be a medical nylon line or a medical polyester line, etc., which is not limited in this embodiment. In addition, the color of the follower line 131 may be configured as blue or green, etc., so that the follower line 131 can be more conspicuous, and the camera module 110 can more easily capture the situation of the follower line 131. The follower line 131 may include a free end 1311 and a fixed end 1312 that are far away from each other, the fixed end 1312 is arranged in the instrument tube 120, and the free end 1311 extends out of the distal end of the instrument tube 120. The medium is discharged from the distal end of the instrument tube 120, and the follower line 131 can extend along the flow direction of the medium, and then the extension path of the follower line 131 can be the flow path of the medium, and the camera module 110 can clearly capture the flow direction of the medium.

[0032] Specifically, the fixed end 1312 of the follower line 131 can be fixed to the wall of the instrument tube 120, and the follower line 131 can always indicate the flow path of the medium. Figure 3 As shown, the fixed end 1312 can be fixed to the distal end of the treatment instrument 139. For example, the treatment instrument 139 can be a laser device, and the fixed end 1312 is fixed to the distal end of the treatment instrument 139. After the treatment instrument 139 breaks the stone, the follow-up line 131 can clearly show the flow path of the medium, so that the camera module 110 can clearly obtain the flow path of the medium. Among them, the flow direction of the medium tends to be dynamically stable, and the extension path of the follow-up line 131 tends to be dynamically stable. Medical staff can obtain the approximate extension path of the follow-up line 131 through the camera module 110 to determine the flow path of the medium.

[0033] In some other cases, the insertion portion 100 has a marking channel (not shown), the marking channel is connected to the instrument channel 121, and the marking channel extends to the proximal end of the insertion portion 100. The follower wire 131 is arranged in the marking channel and is slidably arranged relative to the insertion portion 100. The fixed end 1312 of the follower wire 131 can extend out of the proximal end of the marking channel, and the free end 1311 extends out of the distal end of the instrument tube 120. Medical staff can pull out or insert the follower wire 131 to change the extension length of the follower wire 131 extending out of the instrument tube 120, so as to prevent the follower wire 131 from blocking the camera module 110 or winding around the treatment instrument 139 when idle, thereby improving the flexibility of use of the marking device.

[0034] In another embodiment, see Figure 4 The marking structure 130 may include a marking member 132, a piston 133 and a driving assembly 134. The piston 133 is located in the marking member 132, the piston 133 and the marking member 132 are slidably matched, and the driving assembly 134 is in driving connection with the piston 133. For further information, please refer to Figure 5 The marking member 132 may have a marking cavity 1321, which is connected to the instrument channel 121, and the marking cavity 1321 is used to contain the marking liquid. The piston 133 is located in the marking cavity 1321 and slidably cooperates with the marking member 132. As the driving component 134 drives the piston 133 to slide relative to the marking member 132, the marking liquid is discharged. The marking liquid is discharged into the instrument channel 121, and compared with the medium, the marking liquid can be clearly and obviously presented in the field of view of the camera module 110. Medical staff can clearly observe the distance between the flow path and the stone, and quickly adjust the sheath 2 and the endoscope 1 according to the relative position relationship between the two, thereby improving the use efficiency of the endoscope 1. In addition, the marking liquid can be mixed with the medium, and the marking liquid can show the details of the flow path of the medium, which can more accurately show the flow path of the medium and improve the control accuracy of the endoscope 1.

[0035] Among them, the marking liquid can be vitamin B 2 , Vitamin B 12 , levofloxacin, methylene blue or sodium fluorescein, etc. The type of the marking liquid is selected according to the specific implementation scenario and requirements. The marking liquid can have a specific color, and the camera module 110 can clearly and accurately capture the flow path of the marking liquid.

[0036] For ease of understanding, the following content introduces the working principle of the marking structure 130: like Figure 6 and Figure 7 As shown, Figure 6 FIG. 1 shows a schematic diagram of the structure of the insertion part 100 and the sheath tube 2 located in the renal pelvis. The instrument channel 121 of the insertion part 100 continuously injects a medium. The flow trajectory of the medium is shown in FIG. Figure 7The marking structure 130 can continuously discharge the marking liquid toward the instrument channel 121, and the flow trajectory of the marking liquid is as shown in FIG. Figure 7 The marking liquid is mixed in the medium, and the marking liquid can continuously show the approximate flow path of the medium, thereby improving the control accuracy of the endoscope 1.

[0037] In some other cases, the marking structure 130 only includes a marking member 132 and a piston 133, and the marking member 132 has a marking cavity 1321 connected to the instrument channel 121. The piston 133 is located in the marking cavity 1321, and the piston 133 and the marking member 132 are slidably matched. When the medium flows in the instrument channel 121, the flow rate in the instrument channel 121 is greater than that in the marking cavity 1321. Based on the Bernoulli principle, under certain conditions, the greater the flow rate, the lower the pressure, and thus the pressure in the instrument channel 121 is lower. Under the influence of pressure, the marking liquid in the marking cavity 1321 can automatically flow into the instrument channel 121 to implement the function of marking the flow path of the medium. During this period, the piston 133 can simultaneously reduce the volume of the marking cavity 1321 to prevent the atmospheric pressure from hindering the marking liquid from flowing out of the marking cavity 1321.

[0038] For more information, please see Figure 4 as well as Figure 5 The marking member 132 is provided with a through hole 135, and the through hole 135 is connected between the marking cavity 1321 and the instrument channel 121. The through hole 135 can allow the marking liquid to be discharged into the instrument channel 121, so that the marking liquid is mixed with the medium. The driving assembly 134 includes a first elastic member 1341 and a pull rope 1342. The first elastic member 1341 can be a spring, a spring sheet, etc., and this embodiment is not limited. The first elastic member 1341 is connected to the piston 133 in a transmission manner, and the first elastic member 1341 is used to drive the piston 133 to move in a direction close to the through hole 135. The first elastic member 1341 can continuously act on the piston 133, so that the piston 133 can squeeze the marking liquid, so that the marking liquid can be discharged from the through hole 135. The distal end of the pull rope 1342 is connected to the piston 133, and is used to drive the piston 133 to move in a direction away from the through hole 135. The distal end of the pull rope 1342 can extend to the proximal end of the insertion part 100, and the medical staff can pull the pull rope 1342. The pull rope 1342 can control the movement of the piston 133 to prevent the leakage of the marking liquid. For example, when the insertion part 100 is inserted into the sheath tube 2, the pull rope 1342 can continue to pull the piston 133 to prevent the first elastic member 1341 from driving the piston 133 and causing the marking liquid to leak. At the same time, the relative position of the piston 133 and the marking member 132 does not change, and the atmospheric pressure acts on the marking liquid in the marking cavity 1321, and the marking liquid cannot be directly discharged through the through hole 135, further improving the sealing of the marking mechanism when it is idle.

[0039] In this example, see Figure 4 as well as Figure 8 , the marking member 132 is arranged at the distal end of the insertion part 100, and the distal end of the marking member 132 is provided with a flexible seal 136. Further, the flexible seal 136 can be connected to the cavity wall forming the marking cavity 1321. The material of the flexible seal 136 can be medical silicone, rubber, etc., which is not limited in this embodiment. The flexible seal 136 is provided with a first injection port 1361, and the first injection port 1361 is interconnected with the marking cavity 1321. By injection or other means, the medical staff or the installer injects the marking liquid into the marking cavity 1321 through the first injection port 1361. The marking liquid is injected into the marking cavity 1321. The pressure of the marking liquid can push the piston 133, increase the volume of the marking cavity 1321, so as to accommodate more marking liquid. When the injection needle suitable for injecting the marking liquid is pulled out, due to the elastic recovery of the flexible seal 136, the first injection port 1361 will be quickly closed to prevent the leakage of the marking liquid.

[0040] In some other cases, during the process of injecting the marking liquid into the marking chamber 1321, the piston 133 is pulled synchronously to increase the volume of the marking chamber 1321 to accommodate more marking liquid.

[0041] For further information, please refer to Figure 8 The marking structure 130 may further include a sliding seal 137, and the sliding seal 137 is provided with a second injection port 1371. The first injection port 1361 and the second injection port 1371 are arranged opposite to each other, that is, the first injection port 1361 and the second injection port 1371 are arranged coaxially. Through the first injection port 1361 and the second injection port 1371, medical staff or installers can inject the marking liquid into the marking cavity 1321. The sliding seal 137 is located at the distal end of the marking member 132, and the sliding seal 137 and the marking member 132 are slidably matched. The sliding seal 137 is used to seal the through hole 135 when the marking liquid is injected into the marking cavity 1321. This setting can seal the through hole 135 during the injection process of the marking liquid, prevent the through hole 135 from directly leaking the marking liquid, and improve the reliability of the insertion part 100.

[0042] For further information, please refer to Figure 8 The sliding seal 137 is disposed on a side of the flexible seal 136 away from the through hole 135, and the sliding seal 137 has a sealing portion 1372, one end of which extends into a side of the flexible seal 136 close to the through hole 135. Fig. 9As shown, while injecting the marking liquid, the installer or medical staff presses the sliding seal 137 to move toward the direction close to the flexible seal 136. The sealing portion 1372 moves therewith, and the sealing portion 1372 can close the through hole 135 to achieve a sealed setting of the through hole 135, thereby preventing the through hole 135 from directly leaking the marking liquid, and improving the reliability of the insertion portion 100.

[0043] In addition, see Figure 8 The marking member 132 may further include a second elastic member 138. The second elastic member 138 may be a spring, a spring sheet, etc., which is not limited in this embodiment. The second elastic member 138 is disposed between the flexible seal 136 and the sliding seal 137. The second elastic member 138 is used to drive the sliding seal 137 to move after the marking liquid is injected into the marking cavity 1321, so as to open the through hole 135. Fig. 9 As shown, while injecting the marking liquid, the installer or medical staff presses the sliding seal 137 toward the direction close to the flexible seal 136, forcing the second elastic member 138 to deform and seal the through hole 135. Figure 8 As shown, after the injection of the marking liquid is completed, the injection needle is pulled out, the second elastic member 138 returns to its original state, and drives the sliding seal 137 to move in a direction away from the flexible seal 136 .

[0044] Preferably, a one-way membrane flap (not shown) is provided in the through hole 135. The one-way membrane flap may be a membrane-like structure, which allows fluid or material to pass in a single direction, and acts as a barrier or seal in the opposite direction. Further, the marking liquid can flow in a one-way direction from the marking cavity 1321 to the instrument channel 121. The one-way membrane flap can make the marking liquid flow out in one direction, and prevent the medium from flowing into the marking cavity 1321, so as to avoid the medium from diluting the marking liquid or hindering the movement of the piston 133, etc., thereby improving the safety of the marking device.

[0045] In some other embodiments, the marking structure 130 may include not only a follower line 131, but also a marking member 132, a piston 133, and a driving assembly 134. This arrangement can make the marking structure 130 redundant, thereby improving the marking effect and reliability of the marking structure 130. Furthermore, the fixed end 1312 of the follower line 131 can be fixed to the piston 133, and after the marking liquid in the marking member 132 is completely or mostly discharged, the free end 1311 of the follower line 131 extends out of the instrument channel 121, so that the marking structure 130 can continue to implement the marking effect, thereby extending the marking time of the marking structure 130.

[0046] In this example, see Fig.10, the insertion part 100 is used to insert the sheath tube 2, and the insertion part 100 is offset relative to the sheath tube 2. Schematically, a fixing member is provided in the sheath tube 2, and the fixing member drives the insertion part 100 to be offset. The space on one side of the offset insertion part 100 is larger, and this setting can improve the suction effect of the sheath tube 2 and make the medium have a clearer flow path. In the direction from the camera module 110 to the instrument tube 120, the axis of the sheath tube 2 and the axis of the insertion part 100 are distributed in sequence. In other words, relative to the camera module 110, the instrument tube 120 is close to the offset direction of the insertion part 100. Furthermore, a larger space is formed on the side of the camera module 110 away from the instrument tube 120. This setting can make most of the medium pass in front of the camera module 110, and then flow into the gap between the sheath tube 2 and the insertion part 100, so as to ensure that the camera module 110 can collect the specific flow path of the medium, and avoid the flow path of the medium not appearing in the field of view of the camera module 110.

[0047] In some other cases, the camera module 110 and the marking structure 130 can be integrated to form a front-end assembly. This arrangement can improve the integration of the camera module 110 and the marking structure 130, reduce the difficulty of assembling the insertion part 100, and improve the structural stability of the insertion part 100.

[0048] To achieve the above and other related purposes, please refer to Fig.11 The present application provides an endoscope 1, comprising 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 can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the type of the endoscope 1.

[0049] To achieve the above and other related purposes, please refer to Fig.12 The present application provides a control system 3 , which is applied to the aforementioned endoscope 1 , and the insertion portion 100 of the endoscope 1 is inserted into the sheath tube 2 .

[0050] Please also read Figure 1 as well as Fig.12, the control system 3 may include a first pressure control module 310, a second pressure control module 320 and a control module 330, the first pressure control module 310 is connected to the instrument tube 120, and the first pressure control module 310 is used to control the medium flow pressure value in the instrument tube 120. The second pressure control module 320 is connected to the sheath tube 2, and the second pressure control module 320 is used to control the medium flow pressure value in the sheath tube 2. The first pressure control module 310 and the second pressure control module 320 can be a pump body or a valve body connected to the pump body, etc., and this embodiment does not limit their types. Exemplarily, the first pressure control module 310 and the second pressure control module 320 can cooperate with each other, the first pressure control module 310 can be a positive pressure pump, and the first pressure control module 310 controls the medium flow pressure value in the instrument tube 120 to be a positive pressure value. The second pressure control module 320 can be a negative pressure pump, and the second pressure control module 320 controls the medium flow pressure value in the instrument tube 120 to be a negative pressure value. Moreover, on this basis, the medical staff can manually control the first pressure control module 310 and the second pressure control module 320 to change the flow path of the medium, etc. For example, under the joint action of the instrument tube 120 and the sheath tube 2, the flow path of the medium can be roughly arc-shaped. Under the control of the first pressure control module 310 and the second pressure control module 320, the greater the pressure value in the instrument tube 120 and the sheath tube 2, the greater the distance between the farthest point of the flow path of the medium and the insertion part 100, and thus the effect can be applied to a farther position.

[0051] Please continue reading Figure 1 as well as Fig.12 , the control module 330 is electrically connected to the first pressure control module 310, the second pressure control module 320 and the camera module 110 of the endoscope 1. The camera module 110 is used to obtain the flow path of the marking medium and transmit it to the control module 330. The control module 330 is used to compare the flow path with the preset path, and adjust the medium flow pressure value in the instrument tube 120 and / or the sheath tube 2 according to the comparison result of the flow path and the preset path. Exemplarily, compared with the preset path, the control module 330 finds that the medium flow path is closer to the insertion part 100 and the range of action of the medium is too small. The control module 330 controls the first pressure control module 310 and the second pressure control module 320 to increase the medium flow pressure value of the instrument tube 120 and the sheath tube 2. The control module 330 can make the flow path of the medium in the best state and improve the use effect of the endoscope 1.

[0052] In addition, the control module 330 enables each endoscope 1 and sheath 2 to have the same flow path, thereby improving the versatility of the endoscope 1 , shortening the medical staff's adaptation process to each endoscope 1 and sheath 2 , and reducing the difficulty of using the endoscope 1 .

[0053] The preset path may be an optimal flow path for the medium, and the preset path may be preset in the control module 330, or the preset path may be manually configured by medical personnel in the control module 330. Further, the preset path determines the maximum distance between the farthest point of the flow path of the medium and the insertion part 100, as well as the outflow angle and inflow angle of the medium. The preset path can balance the action range and action effect of the medium, and avoid situations such as the action range of the medium being too large and the action effect being poor.

[0054] The technical solution adopted by the present invention can achieve the following beneficial effects: the instrument tube 120 is used to inject the medium, the sheath tube 2 provides a suction environment, the marking structure 130 can present the flow path of the medium in front of the camera module 110, the medical staff can observe the flow path of the medium through the camera module 110, and the marking structure 130 visualizes the flow path of the medium. Furthermore, the medical staff can clearly observe the distance between the flow path and the stone, and quickly adjust the sheath tube 2 and the endoscope 1 according to the relative position relationship between the two, so as to improve the use efficiency of the endoscope 1 and reduce the time of lithotripsy.

[0055] 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.

[0056] 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.

[0057] 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 of an endoscope, characterized in that: include: A camera module, the camera module is arranged at the distal end of the insertion portion; an instrument tube having an instrument channel, the instrument channel penetrating opposite ends of the insertion portion and used for circulating a medium; and, A marking structure, wherein the marking structure is disposed adjacent to the camera module, and the marking structure is used to mark a flow path of the medium within the field of view of the camera module.

2. The insertion portion according to claim 1, characterized in that: The marking structure comprises a follower line, and the follower line comprises a free end and a fixed end which are far away from each other, the fixed end is arranged in the instrument tube, and the free end extends out of the distal end of the instrument tube.

3. The insertion portion according to claim 1 or 2, characterized in that: The marking structure includes a marking piece, a piston and a driving assembly. The marking piece has a marking cavity, which is communicated with the instrument channel and is used to contain a marking liquid. The piston is located in the marking cavity and slidably cooperates with the marking piece. The driving assembly is drivingly connected to the piston.

4. The insertion portion according to claim 3, characterized in that: The marking member is provided with a through hole, and the through hole is connected between the marking cavity and the instrument channel. The driving assembly includes a first elastic member and a pull rope. The first elastic member is transmission-connected to the piston, and the first elastic member is used to drive the piston to move toward a direction approaching the through hole. The distal end of the pull rope is connected to the piston and is used to drive the piston to move toward a direction away from the through hole.

5. The insertion portion according to claim 4, characterized in that: The marking member is arranged at the distal end of the insertion portion, and a flexible sealing member is disposed at the distal end of the marking member. The flexible sealing member defines a first injection port, and the first injection port is communicated with the marking cavity.

6. The insertion portion according to claim 5, characterized in that The marking structure further includes a sliding seal, the sliding seal is provided with a second injection port, the first injection port is arranged opposite to the second injection port, the sliding seal is located at the distal end of the marking member, and is slidably matched with the marking member, and the sliding seal is used to seal the through hole when the marking liquid is injected into the marking cavity; The marking member also includes a second elastic member, which is arranged between the flexible seal and the sliding seal. The second elastic member is used to drive the sliding seal to move to open the through hole after the marking liquid is injected into the marking cavity.

7. The insertion portion according to claim 4, characterized in that: A one-way membrane flap is arranged in the through hole, and the marking liquid can flow in one direction from the marking cavity to the instrument channel.

8. The insertion portion according to claim 1, characterized in that The insertion portion is used to insert the sheath tube, and is offset relative to the sheath tube. In the direction from the camera module to the instrument tube, the axis of the sheath tube and the axis of the insertion portion are distributed in sequence; And / or, the camera module and the marking structure are integrated to form a front-end component.

9. An endoscope, characterized in that: Comprising the insertion portion according to any one of claims 1-8.

10. A control system applied to the endoscope according to claim 9, wherein the insertion portion of the endoscope is inserted into a sheath tube, characterized in that: include; A first pressure control module, connected to the instrument tube and used to control the flow pressure value of the medium in the instrument tube; a second pressure control module connected to the sheath tube and used to control the flow pressure value of the medium in the sheath tube; and A control module, electrically connected to the first pressure control module, the second pressure control module and the camera module; Among them, the camera module is used to obtain the flow path of the marked medium and transmit it to the control module. The control module is used to compare the flow path with a preset path, and adjust the medium flow pressure value in the instrument tube and / or the sheath tube according to the comparison result of the flow path and the preset path.

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