Urethral catheter communicating catheter with lubricating sleeve and endoscope and using method

Abstract

The invention provides a catheter communicating catheter with a lubricating sleeve and an endoscope and a using method.The communicating catheter comprises a guiding body which is sequentially provided with a connecting part and an inserting part in the axial direction, a cavity is formed in the connecting part, the inserting part comprises a hose communicating with the cavity, and the end, away from the connecting part, of the hose of the connecting part forms a contact end; a matching pipe communicating the outside of the connecting part and the cavity is formed on the side wall of the connecting part, the guiding body has a first state when the hose is inserted into the bladder of the patient and a second state when the camera lens extends into the bladder of the patient, in the first state, the contact end is sleeved with a lubricating sleeve, a connecting wire penetrates into the matching pipe, and an anchor point is arranged on the side, close to the hose, of the lubricating sleeve. In the second state, a signal line penetrates through the matching pipe, a camera lens is arranged at the end of the signal line, the outer wall of the signal line is sleeved with a sealing plug, and the sealing plug is used for being matched with the end, away from the cavity, of the matching pipe in an abutting mode. The camera lens can extend into the bladder of a patient through the hose, so that the infection risk of the patient is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a urinary catheter connecting conduit with a lubricating sleeve and an endoscope and a use method thereof. Background Art

[0002] Bladder irrigation is a routine procedure in many urological surgeries and treatments. It not only helps cleanse diseased tissue and secretions within the bladder but also provides important information for subsequent diagnosis. However, during bladder irrigation, medical staff often face the challenge of observing the internal bladder. Using instruments that do not penetrate the bladder, such as ultrasound, can easily lead to missed information about the affected area or delayed diagnosis, which greatly hinders the proper assessment and treatment of bladder diseases.

[0003] Furthermore, currently, when performing cystoscopic examinations, inserting the lens and signal line directly into the catheter can easily cause catheter damage, which not only makes subsequent treatment difficult but may also lead to complications such as infection, causing greater harm to the patient.

[0004] In addition, since the maximum expansion diameter of the catheter is limited, it is easy to cause contamination or damage to the camera lens when it comes into contact with the camera lens, thereby affecting the image quality and observation effect of subsequent transmission. Summary of the Invention

[0005] The embodiment of the present application provides a urinary catheter connecting catheter with a lubricating sleeve and an endoscope and a method of use, which solves the defect that inserting a camera lens into the patient's bladder can easily damage the urinary catheter, and realizes the insertion of the camera lens into the patient's bladder without touching the urinary catheter.

[0006] According to the urinary catheter connecting catheter with a lubricating sleeve and an endoscope in the embodiment of the present application, it includes a guiding body, which is provided with a connecting part and an insertion part in sequence along the axial direction, a cavity is provided in the connecting part, and the insertion part includes a hose connected to the cavity, the connecting part hose forms a contact end away from one end of the connecting part, and a matching tube connecting the outside of the connecting part and the cavity is formed at the side wall of the connecting part. The guiding body has a first state when the hose is inserted into the patient's bladder and a second state when the camera lens is inserted into the patient's bladder. In the first state, the contact end is provided with a lubricating sleeve, a connecting wire is passed through the matching tube, and an anchor point is provided near the side of the lubricating sleeve near the hose, and the anchor point is fixedly matched with the connecting wire. In the second state, a signal line is passed through the matching tube, a camera lens is provided at the end of the signal line, and a sealing plug is provided on the outer wall of the signal line. The sealing plug is used to abut and match with the end of the matching tube away from the cavity.

[0007] Preferably, the embodiment of the present application also discloses: the mating tube includes a first tube body that is arranged obliquely and passes through the connecting part, the first tube body is located in the cavity and extends toward the direction close to the hose, the first tube body forms a second tube body axially close to one end of the hose, the second tube body extends into the hose, and the first tube body forms a third tube body radially away from one end of the second tube body.

[0008] Preferably, the embodiment of the present application further discloses that: the anchor point includes a column integrally formed with the lubricating sleeve, a limiting sphere is formed at the free end of the column, and the wire is connected to the outer wall of the column.

[0009] Preferably, the embodiment of the present application further discloses that: a limiting hole is formed radially through the column, and the limiting hole is used for allowing the connecting wire to pass through.

[0010] Preferably, the embodiment of the present application also discloses: an adapter is provided at one end of the hose near the connecting portion, the adapter is integrally arranged with the hose, the adapter includes a mating section, a rest section and an installation section formed in sequence along the axial direction, the diameter of the rest section is larger than the mating end and the installation section, a connecting seat is formed correspondingly at the connecting portion, a mounting hole connected to the cavity is formed at the connecting seat, the mating section is threadedly engaged with the mounting hole, a first flange is formed at the free end of the connecting seat, the first flange is used to abut against the rest section, and anti-slip stripes are formed on the periphery of the installation section.

[0011] Preferably, the embodiment of the present application further discloses that: a mounting interface is formed at one end of the connecting portion away from the insertion portion, and a liquid hole communicating with the cavity is formed axially through the mounting interface.

[0012] Preferably, the embodiment of the present application also discloses: a threading hole is formed in the sealing plug along the axial direction, the threading hole is used to slide with the signal line, the outer wall of the sealing plug is interference fit with the mating tube, a chamfer is formed at one end of the sealing plug close to the mating tube, and a second flange is formed at one end of the sealing plug away from the mating tube, and the second flange is used to abut and fit with the mating tube.

[0013] Preferably, the embodiment of the present application further discloses that: a pull ring is provided at one end of the connecting wire away from the anchor point, and the connecting wire is tied to the pull ring.

[0014] Preferably, the embodiment of the present application also discloses: the diameter of the hose is 0.5-0.9 cm, the material of the hose is made of a blend of PDMS and TPU, the inner wall of the hose is covered with micro-hydrogel, the outer wall of the hose is provided with a hydrophilic coating, and the hydrophilic coating is mixed with anti-inflammatory drugs.

[0015] The present application also discloses a method for using a urinary catheter connecting catheter having a lubricating sleeve and an endoscope, which can be applied to the above-mentioned connecting catheter, comprising the following steps: Step S1: Catheter preparation: The guide body is set to the first state, and the connecting wire is pulled to pull the anchor point of the lubricating sleeve from the flexible tube into the mating tube and out from the other end. Then, the end of the flexible tube with the lubricating sleeve is inserted into the patient's urinary catheter and continued to advance until it enters the patient's bladder; Step S2: Continue pulling the connecting wire until all the lubricating sleeves are pulled out; Step S3: inserting the signal line into the matching tube so that the end of the signal line with the camera lens enters the patient's bladder; Step S4: Push the sealing plug to seal the gap between the matching tube and the signal line. At this time, the guiding body is in the second state, and the guidance of the camera lens is completed.

[0016] Beneficial effects: 1. The guide body in the embodiment of the present application can first be inserted into the patient's bladder by wrapping the end of the hose with a lubricating sleeve, and then the lubricating sleeve can be removed through the connecting wire, so that the signal line with a camera lens at the end can pass through the hose and enter the patient's bladder for observation. At the same time, the sealing plug can also block the matching tube to prevent the liquid in the bladder from overflowing from the matching tube.

[0017] 2. The installation interface at one end of the connection part can be connected to the bladder flushing device to achieve bladder flushing. In conjunction with the camera lens, the flushing progress and content status of the patient's bladder can be observed in real time, which facilitates medical staff to make treatment decisions and thus improve the efficiency of curing patients.

[0018] 3. The adapter and the connection part are detachable, so that medical staff can choose hoses of different diameters for replacement according to the diameter that the patient's specific catheter can withstand, thereby improving the comfort of patient treatment.

[0019] 4. The hose has a multi-layer structure. The micro-hydrogel on the inner wall can lubricate the lubricating sleeve, camera lens and signal line in the hose. The hydrophilic coating is mixed with anti-inflammatory drugs to reduce the risk of infection in the patient's catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of the guiding body in at least one embodiment of the present application; Figure 2 for Figure 1 AA cross-sectional structural diagram; Figure 3 This is a schematic diagram of the internal structure of the guide body in the first state in at least one embodiment of the present application; Figure 4 This is a schematic diagram of the internal structure of the protective cover in at least one embodiment of the present application; Figure 5 This is a schematic diagram of the internal structure of the guide body in the second state in at least one embodiment of the present application; Figure 6 for Figure 4 A partial enlarged schematic diagram of point B in the middle; Figure 7 This is a schematic diagram of a top view of the sealing plug in at least one embodiment of the present application; Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of the CC; Figure 9 This is a schematic diagram of the cross-sectional structure of a hose in at least one embodiment of the present application. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] The drawings in this disclosure are not drawn strictly to scale. The number of coupling tubes 112 on the sidewalls of the connector 11, the number of signal lines 4, and the number of anchor points 31 are not limited to the numbers shown in the drawings. The specific dimensions and numbers of each structure can be determined based on actual needs. The drawings described in this disclosure are merely schematic diagrams of the structures.

[0024] In traditional endoscopic operations, the signal line 4 with a camera lens 41 on the head is directly inserted through the catheter to observe the situation inside the bladder. In this way, the catheter is easily damaged, which in turn causes infection and affects the treatment process.

[0025] For example, in some embodiments, it is necessary to observe the internal situation of the bladder while flushing the bladder, and the camera lens 41 and the flushing tube need to be inserted into the catheter at the same time. However, the maximum safe expandable diameter of the catheter is limited, and inserting the signal line 4 of the camera lens 41 and the flushing tube at the same time will inevitably cause damage to the catheter wall.

[0026] For example, in some embodiments, due to the opening at the front end of the irrigation tube, when the urinary catheter is inserted, the wall of the urinary catheter may be stimulated and contracted when it first contacts the irrigation tube, making it difficult to insert the irrigation tube.

[0027] For example, in some embodiments, when the camera lens 41 is inserted, due to direct contact with the urinary catheter, dirt in the urinary catheter is easily contaminated on the surface of the camera lens 41, thereby affecting the quality of subsequent transmission of internal bladder images.

[0028] The urinary catheter connecting catheter with a lubricating sleeve and an endoscope and the method of use provided by the embodiments of the present disclosure are described below through several specific embodiments.

[0029] Please refer to Figure 1-Figure 2 At least one embodiment of the present disclosure provides a urinary catheter connecting catheter with a lubricating sleeve and an endoscope, which includes a guide body 10. The guide body 10 is provided with a connecting portion 11 and an insertion portion 12 in sequence along the axial direction. The connecting portion 11 is provided with a cavity 111. The insertion portion 12 includes a hose 121 connected to the cavity 111. The hose 121 of the connecting portion 11 forms a contact end 1211 at one end away from the connecting portion 11. A matching tube 112 is formed on the side wall of the connecting portion 11 to connect the outside of the connecting portion 11 and the cavity 111.

[0030] Specifically, the connecting portion 11 is used to connect to the flushing equipment to flush the bladder. The hose 121 is used to insert the patient's catheter until it reaches the bladder, thereby establishing a connection between the connecting portion 11 and the patient's bladder. The matching tube 112 is formed integrally with the connecting portion 11, and both are made of medical hard plastic material, such as polycarbonate or polypropylene.

[0031] The guide body 10 has a first state for inserting the hose 121 into the patient's bladder and a second state for extending the camera lens 41 into the patient's bladder. By switching between the two states, the camera lens 41 can be inserted into the patient's bladder in a safer and more efficient manner. The specific structure is as follows: like Figure 3 and Figure 4 As shown, in the first state, the contact end 1211 is provided with a lubricating sleeve 3, a connecting wire 2 is passed through the matching tube 112, and an anchor point 31 is provided on the side of the lubricating sleeve 3 close to the hose 121, and the anchor point 31 is fixedly matched with the connecting wire 2.

[0032] Specifically, the lubricating sleeve 3 is provided at the contact end 1211, which can reduce the stimulation to the catheter during the process of inserting the hose 121 into the catheter and during the process of the catheter moving to the bladder, thereby preventing the catheter from being damaged. The lubricating sleeve 3 is made of soft plastic material and needs to have good elasticity, such as TPE or PU. The above materials have good biocompatibility and are safe and non-toxic. They can provide a comfortable touch to the catheter, thereby reducing the patient's pain and preventing the hose 121 from causing damage to the patient's catheter when inserted into the bladder. The connecting wire 2 is made of nylon wire or soft metal wire. The above two materials have high rigidity, are not easy to break and have stable chemical properties. One end is fixedly matched with the anchor point 31, and the other end extends from the matching tube 112 to the outside of the guide body 10, thereby facilitating the subsequent pulling out of the protective sleeve.

[0033] like Figure 5 As shown, in the second state, a signal line 4 is passed through the mating tube 112 , a camera lens 41 is provided at the end of the signal line 4 , and a sealing plug 5 is provided on the outer wall of the signal line 4 , which is used to abut against the end of the mating tube 112 away from the cavity 111 .

[0034] Specifically, the signal line 4 can be an optical fiber cable, the camera lens 41 is a medical waterproof micro endoscope, the diameter of the camera lens 41 is 0.4cm-0.45cm, the diameter of the optical fiber cable is about 0.2cm-0.3cm, and the sealing plug 5 is made of soft rubber, which can be natural rubber or synthetic rubber.

[0035] At least one embodiment of the present disclosure further provides a method for using a urinary catheter connecting catheter having a lubricating sleeve and an endoscope, which can be applied to the above-mentioned connecting catheter and specifically includes the following steps: Step S1: Catheter preparation: The guide body 10 is set to the first state. The connecting wire 2 is pulled to move the anchor point of the lubricating sleeve 3 from the hose 121 into the matching tube 112 and then out from the other end. Then, the end of the hose 121 provided with the lubricating sleeve 3 is inserted into the patient's urinary catheter and continuously advanced until it enters the patient's bladder. During advancement, attention should be paid to the force applied to the hose 121 and the patient's reaction, and the advancement speed should be controlled to minimize the patient's pain. Step S2: Continue pulling the connecting wire 2 until all the lubricating sleeves are pulled out. At this point, the hose 121 has established communication between the patient's bladder and the outside world. Removing the protective sleeves facilitates subsequent insertion of the camera lens 41 and flushing of the patient's bladder. Step S3: inserting the signal line 4 into the matching tube 112 so that the end of the signal line 4 with the camera lens 41 enters the patient's bladder, thereby observing the patient's bladder; Step S4: Push the sealing plug 5 so that the sealing plug 5 blocks the gap between the matching tube 112 and the signal line 4. At this time, the guiding body 10 is in the second state, and the guidance of the camera lens 41 is completed.

[0036] Through the above steps, the camera lens 41 is inserted into the patient's bladder without contacting the inner wall of the catheter, thereby reducing the patient's pain and the risk of catheter infection.

[0037] In addition, by setting the signal line 4 of the camera lens 41 inside the hose 121, the bladder can be flushed and the inside of the bladder can be observed only through the hose 121, thereby improving the efficiency and quality of the patient's bladder flushing treatment, thereby promoting the patient's recovery.

[0038] For example, in some embodiments, a mounting interface 114 is formed at one end of the connecting portion 11 away from the inserting portion 12 , and a liquid through hole 1141 communicating with the cavity 111 is formed axially through the mounting interface 114 .

[0039] Specifically, the mounting interface 114 can be connected to a syringe or other device for inputting or extracting liquid, so as to flush the bladder.

[0040] In some embodiments, the mating tube 112 includes a first tube body 1121 that is obliquely arranged and passes through the connecting portion 11. The first tube body 1121 is located in the cavity 111 and extends toward the direction close to the hose 121. The first tube body 1121 forms a second tube body 1122 axially at one end close to the hose 121. The second tube body 1122 extends into the hose 121, so that the signal line 4 with the camera lens 41 can be easily inserted into the hose 121. The first tube body 1121 forms a third tube body 1123 radially at one end away from the second tube body 1122.

[0041] Seen in Figure 6 In some embodiments, the anchor point 31 includes a column 311 integrally formed with the lubricating sleeve 3 , a limiting sphere 312 is formed at the free end of the column 311 , and the connecting wire 2 is connected to the outer wall of the column 311 , thereby limiting the connecting wire 2 .

[0042] Furthermore, a limiting hole 313 is formed radially through the column 311 , and the limiting hole 313 is used for allowing the connecting wire 2 to pass through, thereby increasing the connection strength between the connecting wire 2 and the anchor point 31 .

[0043] In some embodiments, an adapter 6 is provided at one end of the hose 121 near the connecting portion 11. The adapter 6 is integrally arranged with the hose 121. The adapter 6 includes a mating section 61, a rest section 62 and a mounting section 63 formed in sequence along the axial direction. The diameter of the rest section 62 is larger than the mating end and the mounting section 63. A connecting seat 113 is formed correspondingly at the connecting portion 11. A mounting hole 1131 communicating with the cavity 111 is formed at the connecting seat 113. The mating section 61 is threadedly engaged with the mounting hole 1131. A first flange 1132 is formed at the free end of the connecting seat 113. The first flange 1132 is used to abut against the rest section 62. Anti-slip stripes 631 are formed on the periphery of the mounting section 63.

[0044] In some embodiments, the sealing plug 5 forms a threading hole 51 along the axial direction, the threading hole 51 is used to slide with the signal line 4, the outer wall of the sealing plug 5 is interference fit with the mating tube 112, the sealing plug 5 forms a chamfer 52 at one end close to the mating tube 112, and the sealing plug 5 forms a second flange 53 at one end away from the mating tube 112, and the second flange 53 is used to abut and fit with the mating tube 112.

[0045] In some embodiments, a pull ring 7 is provided at one end of the connecting wire 2 away from the anchor point 31 , and the connecting wire 2 is tied to the pull ring 7 , so that the user can easily pull out the connecting wire 2 and take out the protective cover.

[0046] In some embodiments, the diameter of the hose 121 is 0.5-0.9 cm, the hose 121 is made of a blend of PDMS and TPU, the inner wall of the hose 121 is covered with micro-hydrogel, and the outer wall of the hose 121 is provided with a hydrophilic coating, and the hydrophilic coating is mixed with anti-inflammatory drugs.

[0047] First, the PDMS and TPU blend material has good toughness, maintains stable physical properties after repeated bending, and is non-irritating to the human body.

[0048] Secondly, the micro-hydrogel inside the hose 121 serves to lubricate the inner wall of the hose 121, thereby preventing the lubricating sleeve 3 from clogging the hose 121 and improving the smoothness of the subsequent movement of the camera lens 41 in the hose 121. The hydrophilic coating mixed with anti-inflammatory drugs on the outer wall can release the anti-inflammatory drugs during contact with the catheter, thereby reducing the risk of catheter infection. The anti-inflammatory drugs are lidocaine or cefoperazone.

[0049] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0050] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The embodiments shown in the embodiments are only part of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above and, without departing from the purpose of the present invention, designs a structure and embodiment similar to the technical solution without creatively designing, they shall fall within the scope of protection of the present invention.

Claims

1. A urinary catheter connecting catheter with a lubricating sleeve and an endoscope, characterized in that: The guide body comprises a guide main body, which is provided with a connecting part and an inserting part in sequence along the axial direction, a cavity is provided in the connecting part, the inserting part comprises a hose connected with the cavity, a contact end is formed at one end of the connecting part hose away from the connecting part, and a matching tube connected with the outside of the connecting part and the cavity is formed at the side wall of the connecting part. The guide body has a first state when the hose is inserted into the patient's bladder and a second state when the camera lens is inserted into the patient's bladder. In the first state, the contact end is provided with a lubricating sleeve, a connecting wire is passed through the matching tube, an anchor point is provided near the side of the lubricating sleeve close to the hose, and the anchor point is fixedly matched with the connecting wire. In the second state, a signal line is passed through the matching tube, a camera lens is provided at the end of the signal line, a sealing plug is provided on the outer wall of the signal line, and the sealing plug is used to abut and match with the end of the matching tube away from the cavity.

2. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 1, characterized in that: The mating tube includes a first tube body that is arranged obliquely and passes through the connecting part. The first tube body is located in the cavity and extends toward the direction close to the hose. The first tube body forms a second tube body axially near one end of the hose. The second tube body extends into the hose. The first tube body forms a third tube body radially away from one end of the second tube body.

3. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 1, characterized in that: The anchor point comprises a column integrally formed with the lubricating sleeve, a limiting sphere is formed at the free end of the column, and the wire system is connected to the outer wall of the column.

4. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 3, characterized in that: A limiting hole is formed through the column in the radial direction, and the limiting hole is used for allowing the connecting wire to pass through.

5. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 1, characterized in that: An adapter is provided at one end of the hose near the connecting part. The adapter is integrated with the hose. The adapter includes a mating section, a rest section and an installation section formed in sequence along the axial direction. The diameter of the rest section is larger than the mating end and the installation section. A connecting seat is formed correspondingly at the connecting part, and a mounting hole connected to the cavity is formed at the connecting seat. The mating section is threadedly engaged with the mounting hole. A first flange is formed at the free end of the connecting seat. The first flange is used to abut against the rest section, and anti-slip stripes are formed on the outer periphery of the installation section.

6. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 1, characterized in that: A mounting interface is formed at one end of the connecting portion away from the inserting portion, and a liquid hole communicating with the cavity is formed through the mounting interface along the axial direction.

7. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 1, characterized in that: The sealing plug forms a threading hole along the axial direction, which is used to slide with the signal line. The outer wall of the sealing plug has an interference fit with the mating tube. The sealing plug forms a chamfer at one end close to the mating tube, and forms a second flange at the end away from the mating tube. The second flange is used to abut against the mating tube.

8. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 1, characterized in that: A pull ring is provided at one end of the connecting wire away from the anchor point, and the connecting wire is tied to the pull ring.

9. The urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to claim 1, characterized in that: The diameter of the hose is 0.5-0.9 cm. The hose is made of a blend of PDMS and TPU. The inner wall of the hose is covered with micro-hydrogel, and the outer wall of the hose is provided with a hydrophilic coating, which is mixed with anti-inflammatory drugs.

10. A method for using a urinary catheter connecting catheter with a lubricating sleeve and an endoscope, applied to the urinary catheter connecting catheter with a lubricating sleeve and an endoscope according to any one of claims 1 to 9, characterized in that: The steps include: Step S1: Catheter preparation: The guide body is set to the first state, and the connecting wire is pulled to pull the anchor point of the lubricating sleeve from the flexible tube into the mating tube and out from the other end. Then, the end of the flexible tube with the lubricating sleeve is inserted into the patient's urinary catheter and continued to advance until it enters the patient's bladder; Step S2: Continue pulling the connecting wire until all the lubricating sleeves are pulled out; Step S3: inserting the signal line into the matching tube so that the end of the signal line with the camera lens enters the patient's bladder; Step S4: Push the sealing plug to seal the gap between the matching tube and the signal line. At this time, the guiding body is in the second state, and the guidance of the camera lens is completed.

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