Visual urethral catheterization and urethral dilatation system and endoscope protection device

Abstract

The invention discloses a visual urethral catheterization and urethral dilatation system and an endoscope protection device.The endoscope protection device comprises a protection sleeve base, an endoscope protection sleeve and a Y-shaped tube, and a clamping piece for clamping the front end of an endoscope handle is arranged at the rear end of the protection sleeve base; the endoscope protection sleeve is made of a flexible material, a transparent film structure is arranged at the front end of the endoscope protection sleeve, the rear end of the endoscope protection sleeve is connected with the protection sleeve base, and an endoscope body channel for installing an endoscope soft endoscope body and a guide wire channel are arranged in the endoscope protection sleeve; a guide wire outlet is formed in the front end of the guide wire channel, and the rear end of the guide wire channel is communicated with an outlet of the Y-shaped tube; the Y-shaped pipe is arranged on the front side of the protective sleeve base, and the Y-shaped pipe further comprises a guide wire inlet and a water injection inlet. The endoscope can be protected, the use cost of the endoscope is reduced, the service life of the endoscope is prolonged, the urethral catheterization process is safe and reliable, the success rate is high, the probability of bladder puncture is reduced, and the urethral dilatation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a visual urethral catheterization and urethral dilatation system and an endoscope protection device. BACKGROUND

[0002] With the arrival of global aging, the number of elderly people is gradually increasing. Most elderly men, especially men over 70 years old, have varying degrees of benign prostatic hyperplasia. Once the hyperplasia is severe, or after drinking spicy and other stimulating foods, urinary retention is easily caused. At this time, the only way to solve urination is to leave a catheter. However, due to the urethral stenosis caused by benign prostatic hyperplasia in elderly men, if the patient fails to leave a catheter, cystostomy under local anesthesia must be performed. Some elderly patients also have neurogenic bladder due to bladder dysfunction, lumbar and cervical spine diseases, or sequelae of cerebrovascular accidents, and cannot urinate on their own, so they must replace the catheter for a long time.

[0003] However, the current method of leaving a catheter in the clinic has many disadvantages, as follows:

[0004] Leaving a catheter in a non-anesthetized state causes varying degrees of pain and discomfort in all patients, especially in patients with urethral stenosis, who often need to perform urethral dilatation in a blind state. At this time, the patient is in great pain, and if the urethra is damaged, other complications may be caused.

[0005] Both are operated in a blind state. That is, the operation is based on the experience of the doctor, and the urethral condition cannot be understood. Operating in a blind state is prone to iatrogenic injury.

[0006] Once urethral stenosis occurs and the catheter fails to be left, cystostomy or ureteroscopy in the operating room must be performed. Cystostomy, which involves making a hole in the suprapubic region to enter the bladder and leaving a drainage tube to drain urine, is extremely easy to damage the intestinal canal, especially in patients with inguinal hernia. Moreover, after cystostomy, the patient is affected in wearing trousers, especially in winter, which affects the patient's life. Ureteroscopy in the operating room requires many preoperative examinations, which seriously consumes the patient's time and has the risk of bladder rupture.

[0007] There is currently a portable disposable cystoscope, but the cystoscope has a chip and is discarded after a single use, which is a great waste of medical resources. SUMMARY

[0008] The technical problem to be solved by the present application is to overcome the defects of low safety and reliability in the catheterization process, high cost of endoscope use, and to provide a visual urethral catheterization and urethral dilatation system and an endoscope protection device that can protect the endoscope, reduce the use cost of the endoscope, prolong the service life of the endoscope, improve the success rate of the catheterization process, reduce the probability of cystostomy, and improve the efficiency of urethral dilatation.

[0009] The present application solves the above technical problems by the following technical solutions:

[0010] An endoscope protection device, characterized in that the endoscope protection device comprises a protection sleeve base, an endoscope protection sleeve and a Y-shaped tube,

[0011] The rear end of the protection sleeve base is provided with a clamping part for clamping the front end of the endoscope handle.

[0012] The endoscope protection sleeve is made of flexible material, the front end of the endoscope protection sleeve is provided with a transparent film structure, the rear end of the endoscope protection sleeve is connected with the protection sleeve base, and the endoscope protection sleeve is internally provided with a lens channel for mounting the soft lens of the endoscope and a guide wire channel.

[0013] The front end of the guide wire channel is provided with a guide wire outlet, and the rear end of the guide wire channel is communicated with the outlet of the Y-shaped tube.

[0014] The Y-shaped tube is arranged on the front side of the protection sleeve base, and the Y-shaped tube further comprises a guide wire inlet and a water injection inlet.

[0015] Preferably, the transparent film structure comprises a transparent film and a connecting tube, the transparent film is arranged at one end of the connecting tube, the other end of the connecting tube is connected with the endoscope protection sleeve, at least two limiting strips are arranged on the inner wall of the connecting tube, and the limiting strips are matched with limiting grooves at the front end of the soft lens of the endoscope.

[0016] Preferably, the diameter of the guide wire channel is greater than the diameter of the guide wire.

[0017] Preferably, the rear end of the guide wire inlet is provided with a sealing structure, and the sealing structure seals the gap between the guide wire and the inner wall of the guide wire inlet.

[0018] Preferably, the sealing structure comprises a rubber ring, the rubber ring is arranged on the inner wall of the guide wire inlet, and the diameter of the rubber ring is smaller than the diameter of the guide wire.

[0019] Preferably, the sealing structure is an iris structure, the iris structure comprises an iris base, a blade and a guide cover plate, the iris base is fixed at the rear end of the guide wire inlet, a sliding groove is arranged on the iris base, one side of the blade is provided with a sliding block matched with the sliding groove, and the other side of the blade is provided with a guide protrusion, and one side of the guide cover plate is provided with a guide hole matched with the guide protrusion.

[0020] Preferably, the endoscope protection device is used for a urinary catheter, the urinary catheter comprises a lens through hole and an air bag, the lens through hole is arranged at the front end of the urinary catheter, the diameter of the lens through hole is greater than the diameter of the camera and smaller than the diameter of the soft lens of the endoscope.

[0021] Preferably, the length of the endoscope protection sleeve is smaller than the length of the soft lens of the endoscope.

[0022] The application also provides a visual urethral catheterization and urethral dilatation system, characterized in that the visual urethral catheterization and urethral dilatation system comprises the endoscope protection device as described above.

[0023] Preferably, the guide wire comprises a guide wire body and a guide wire tip, and the guide wire tip is elastic and hemispherical in shape.

[0024] Preferably, the urethral dilator comprises a plurality of hollow dilators with different outer diameters, and each hollow dilator is provided with a guide wire channel. Each hollow dilator comprises a dilator body and a dilator tip, and the angle between the dilator tip and the dilator body is greater than 160 degrees and less than 180 degrees. The outer diameter of the dilator tip increases in the direction from front to back.

[0025] The working process of the visual urethral catheterization and urethral dilatation system comprises the following steps:

[0026] Insert the soft endoscope body into the endoscope protection sleeve, and then insert the combined body of the endoscope body and the endoscope protection sleeve into the catheter;

[0027] Insert the guide wire inlet and the water injection inlet into the guide wire and the physiological saline perfusion, respectively;

[0028] Inject anesthetic into the urethra for urethral surface anesthesia, and then insert the catheter, the soft endoscope body and the endoscope protection sleeve into the urethra together. During the operation, the direction of the front end of the soft endoscope body is adjusted by the endoscope probe.

[0029] Judge whether the urethra is narrow:

[0030] If yes, withdraw the catheter, the soft endoscope body and the endoscope protection sleeve, insert the soft endoscope body and the endoscope protection sleeve into the urethra together until the front end of the soft endoscope body and the endoscope protection sleeve enters the bladder, and then continue to insert the guide wire by about 5-10 cm. The front segment of the guide wire can be seen on the display screen to completely enter the bladder. Then, the guide wire is kept in place and the endoscope body and the endoscope protection sleeve are withdrawn along the guide wire. The urethra is dilated to the target size by using the urethral dilator. The catheter is inserted into the urethra along the guide wire by using the soft endoscope body and the endoscope protection sleeve until the front end of the catheter enters the bladder. The balloon is injected with physiological saline, and then the soft endoscope body, the endoscope protection sleeve and the guide wire are withdrawn. The catheter is connected with a urine bag.

[0031] If no, insert the catheter into the urethra along the guide wire by using the soft endoscope body and the endoscope protection sleeve until the front end of the catheter enters the bladder. The balloon is injected with physiological saline, and then the soft endoscope body, the endoscope protection sleeve and the guide wire are withdrawn. The catheter is connected with a urine bag.

[0032] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, i.e. to obtain each preferred example of the application.

[0033] The positive progress effect of the present application is that:

[0034] The present application can protect the endoscope, reduce the use cost of the endoscope, improve the service life of the endoscope, make the urinary catheterization process safe and reliable, reduce the probability of needing bladder puncture, and improve the efficiency of urethral dilation. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structure schematic view of the endoscope protection device of the embodiment 1 of the present application.

[0036] Figure 2 It is a structure schematic view of the visual urinary catheterization and urethral dilation system of the embodiment 1 of the present application.

[0037] Figure 3 It is another structure schematic view of the visual urinary catheterization and urethral dilation system of the embodiment 1 of the present application.

[0038] Figure 4 It is another structure schematic view of the visual urinary catheterization and urethral dilation system of the embodiment 1 of the present application.

[0039] Figure 5 It is another structure schematic view of the visual urinary catheterization and urethral dilation system of the embodiment 1 of the present application.

[0040] Figure 6 It is a structure schematic view of the sealing structure of the embodiment 1 of the present application.

[0041] Figure 7 It is another structure schematic view of the sealing structure of the embodiment 1 of the present application.

[0042] Figure 8 It is a structure schematic view of the urethral dilator of the embodiment 1 of the present application. DETAILED DESCRIPTION

[0043] The present application will be further described below by way of examples, but the present application is not limited in the scope of the examples.

[0044] Embodiment 1

[0045] In this embodiment, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for description purposes and cannot be understood as indicating or implying relative importance.

[0046] In this embodiment, the front end refers to the end that is close to the tip (blind end) and far from the base (endoscope handle). The positional relationship of each component in this embodiment is described with reference to this positional relationship. The purpose is to facilitate the description of the present invention and simplify the description, rather than to indicate or imply that the device or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0047] See Figures 1 to 8 This embodiment provides a visual catheterization and urethral dilation system, including an endoscope, an endoscope protection device 100, a catheter 101, a guidewire, and a urethral dilator.

[0048] The endoscope protection device includes a protective sleeve base 102, an endoscope protective sleeve 103, and a Y-shaped tube 104.

[0049] The rear end of the protective cover base 102 is provided with a snap-fit ​​component 105 that snaps into the front end of the endoscope handle 106.

[0050] The endoscope protective sleeve is made of flexible material. The front end of the endoscope protective sleeve has a transparent membrane structure and the rear end is connected to the base of the protective sleeve. The endoscope protective sleeve 103 has a lens channel 1031 and a guide wire channel 1032 for installing the flexible endoscope body.

[0051] The guide wire channel 1032 has a guide wire outlet at its front end and is connected to the outlet of the Y-shaped tube at its rear end.

[0052] The Y-shaped tube is located on the front side of the protective sleeve base, and the Y-shaped tube also includes a guide wire inlet 1041 and a water inlet 1042.

[0053] The transparent membrane structure includes a transparent membrane 1031 and a connecting tube 107.

[0054] The transparent membrane is located at one end of the connecting tube, and the other end of the connecting tube is connected to the endoscope protective sleeve. At least two limiting strips 108 are provided on the inner wall of the connecting tube, and the limiting strips match the limiting groove at the front end of the flexible endoscope body.

[0055] The diameter of the guidewire channel is larger than the diameter of the guidewire, and there is a gap between the inner wall of the guidewire channel and the guidewire.

[0056] A sealing structure is provided at the rear end of the guidewire inlet, which seals the gap between the guidewire and the inner wall of the guidewire inlet.

[0057] The sealing structure includes a rubber ring disposed on the inner wall of the guidewire inlet, the diameter of the rubber ring being smaller than the diameter of the guidewire. The sealing structure can also be similar to an oil seal or a dust lip to prevent saline solution from leaking out of the guidewire inlet.

[0058] In other embodiments, the sealing structure is an iris structure, which includes an iris base 200, a blade 201, and a guide cover 202. The iris base is fixed to the rear end of the guide wire inlet 1041. The iris base is provided with a groove 203. One side of the blade is provided with a slider that matches the groove, and the other side is provided with a guide protrusion 204. One side of the guide cover is provided with a guide hole 205 that matches the guide protrusion.

[0059] The shape of the side of the blade that contacts the guide wire 113 can match the contact surface. Figure 3 This is only a schematic diagram of the structural principle; the blades can be made of rubber to enhance sealing performance.

[0060] The endoscope protection device is used for the urinary catheter 101, which includes a lens through-hole (urinary catheter port) and a balloon 1011. The lens through-hole is located at the front end of the urinary catheter, and the diameter of the lens through-hole is larger than the diameter of the camera 111 and smaller than the diameter of the flexible endoscope body 112.

[0061] In this embodiment, the endoscope protective sleeve is made of a transparent, flexible material with a certain degree of elasticity, and the length of the endoscope protective sleeve is less than the length of the flexible endoscope body.

[0062] The guidewire includes a guidewire body and a guidewire tip. The guidewire tip is elastic and hemispherical in shape. The guidewire tip can be connected to the guidewire body (steel wire) by a spring, and the spring is wrapped with a flexible material.

[0063] The urethral dilator includes several hollow dilators with different outer diameters. Hollow dilators with different outer diameters mean that the hollow dilator includes multiple hollow dilators with different outer diameters to dilate the urethra step by step.

[0064] The hollow expander has a guide wire channel (expander channel 302) inside. Each hollow expander includes an expander body 300 and an expander front end 301. The angle between the expander front end and the expander body is greater than 160 degrees and less than 180 degrees, preferably 165 degrees. The outer diameter of the expander front end increases sequentially from front to back.

[0065] The working process of the visualized catheterization and urethral dilation system includes:

[0066] Insert the flexible endoscope body into the endoscope protective sleeve, and then insert the endoscope body and endoscope protective sleeve together into the urinary catheter;

[0067] The guidewire is inserted into the guidewire inlet and the water inlet is connected to physiological saline for irrigation, respectively.

[0068] Anesthetic is injected into the urethra for surface anesthesia (the anesthetic is injected from the urethral opening through a syringe or from the water inlet). Then, the catheter, the flexible endoscope, and the endoscope protective sheath are inserted into the urethra together. During the procedure, the direction of the tip of the flexible endoscope is adjusted by the endoscope lever.

[0069] Determine if there is urethral stricture:

[0070] If so, remove the urinary catheter, flexible endoscope, and endoscope protective sleeve. Insert the flexible endoscope and endoscope protective sleeve together into the urethra until the tip of the flexible endoscope and endoscope protective sleeve enters the bladder. Continue to insert the guidewire for about 5-10cm. The monitor will show that the tip of the guidewire has completely entered the bladder. Then, keep the guidewire in place and remove the endoscope and endoscope protective sleeve along the guidewire. Use a urethral dilator to gradually dilate the urethra to the target size. Insert the urinary catheter along the guidewire using the flexible endoscope and endoscope protective sleeve until the tip of the urinary catheter enters the bladder. Inject normal saline into the balloon. Then, remove the flexible endoscope, endoscope protective sleeve, and guidewire. Connect the urinary catheter to a urine bag.

[0071] Otherwise, insert the urinary catheter into the urethra along with the guidewire using the flexible endoscope and endoscope sheath until the tip of the catheter enters the bladder. Inject saline into the balloon, then withdraw the flexible endoscope, endoscope sheath, and guidewire, and connect the urinary catheter to a urine bag.

[0072] Specifically, the endoscope protection device in this embodiment can be used for visual catheter implantation and urethral dilation. The flexible endoscope body is inserted into the endoscope protective sleeve, and then the endoscope body and sleeve (endoscope protective sleeve) are inserted together into the urinary catheter.

[0073] In the sheath channel, one end is connected to physiological saline irrigation, and the other end is used to insert a guidewire.

[0074] The catheter is inserted into the urethra together. During the procedure, the direction of the tip is adjusted by the endoscope lever until the tip of the catheter enters the bladder. 15ml of normal saline is injected into the balloon (the amount to be injected as needed). Then the endoscope, sheath, and guidewire are withdrawn, and the urine bag is connected externally.

[0075] Urinary catheters can be inserted into the bladder more easily and with a higher success rate by using visual manipulation, combined with guidewires and saline irrigation.

[0076] When routine visualization catheterization reveals urethral stricture, withdraw all instruments and devices. Place a Y-shaped sheath over the endoscope, connect the Y-connector to saline solution in one channel, and insert the guidewire into the other. Enter the urethra (endoscope + Y-shaped sheath + guidewire). At this point, the device is only 2.5mm in diameter. Advance it within the urethra under visualization, controlling the direction with a lever. When the tip of the endoscope enters the bladder, insert the tip of the guidewire into the soft portion of the bladder, keeping the guidewire in place. Gradually withdraw the endoscope and sheath, leaving the guidewire in place within the urethra. The guidewire is positioned with the soft end in the bladder, the middle section inside the urethra, and the posterior section outside the urethra. Insert the tail of the guidewire into a hollow dilator with a 15° bend, starting at F12 with the bend facing upwards (towards the patient's abdomen). Keep the guidewire in place and push the dilator into the bladder. Then withdraw the F12 dilator and insert F14, repeating this process step-by-step until F22 (if F22 is reached, an F20 catheter will be used later; if F20 is reached, an F20 catheter will be used later. In principle, the catheter should be F2 smaller than the dilator). Once urethral dilation is complete, insert the scope with the sheath into the catheter, insert the guidewire into the catheter, and open the saline solution. Guide the catheter along the guidewire until it is visualized and advance it into the bladder. Inject 15ml of saline into the catheter balloon, then withdraw the guidewire, sheath, and scope.

[0077] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An endoscope protection device, characterized in that, The endoscope protection device includes a protective sleeve base, an endoscope protective sleeve, and a Y-shaped tube. The rear end of the protective cover base is provided with a snap-fit ​​component that snaps onto the front end of the endoscope handle; The endoscope protective sleeve is made of flexible material. The front end of the endoscope protective sleeve has a transparent membrane structure and the rear end is connected to the base of the protective sleeve. The endoscope protective sleeve has a lens channel and a guide wire channel for installing the flexible endoscope body. The guide wire channel has a guide wire outlet at the front end and is connected to the outlet of the Y-shaped tube at the rear end. The Y-shaped tube is located on the front side of the protective sleeve base, and the Y-shaped tube also includes a guide wire inlet and a water injection inlet.

2. The endoscope protection device as described in claim 1, characterized in that, The transparent membrane structure includes a transparent membrane and a connecting tube. The transparent membrane is disposed at one end of the connecting tube, and the other end of the connecting tube is connected to the endoscope protective sleeve. At least two limiting strips are provided on the inner wall of the connecting tube, and the limiting strips match the limiting groove at the front end of the flexible endoscope body.

3. The endoscope protection device as described in claim 1, characterized in that, A sealing structure is provided at the rear end of the guidewire inlet, which seals the gap between the guidewire and the inner wall of the guidewire inlet.

4. The endoscope protection device as described in claim 3, characterized in that, The sealing structure includes a rubber ring disposed on the inner wall of the guidewire inlet, the diameter of the rubber ring being smaller than the diameter of the guidewire; or, The sealing structure is an iris structure, which includes an iris base, a blade, and a guide cover. The iris base is fixed to the rear end of the guide wire inlet. The iris base is provided with a sliding groove. One side of the blade is provided with a slider that matches the sliding groove, and the other side is provided with a guide protrusion. One side of the guide cover is provided with a guide hole that matches the guide protrusion.

5. The endoscope protection device as described in claim 1, characterized in that, The endoscope protection device is used for the urinary catheter, which includes a lens through-hole and a balloon. The lens through-hole is located at the front end of the urinary catheter, and its diameter is larger than the diameter of the camera and smaller than the diameter of the flexible endoscope body.

6. The endoscope protection device as described in claim 1, characterized in that, The length of the endoscope protective sleeve is shorter than the length of the flexible endoscope body.

7. A visual catheterization and urethral dilation system, characterized in that, The visualization catheterization and urethral dilation system includes an endoscope protection device as described in any one of claims 1 to 6, a guidewire, a urethral dilator, and an endoscope.

8. The visualized catheterization and urethral dilation system as described in claim 7, characterized in that, The guidewire includes a guidewire body and a guidewire tip, the guidewire tip being elastic and having a hemispherical shape.

9. The visualized catheterization and urethral dilation system as described in claim 7, characterized in that, The urethral dilator includes several hollow dilators with different outer diameters. Each hollow dilator has a guide wire channel. Each hollow dilator includes a dilator body and a dilator front end. The angle between the dilator front end and the dilator body is greater than 160 degrees and less than 180 degrees. The outer diameter of the dilator front end increases sequentially from front to back.

10. The visualized catheterization and urethral dilation system as described in claim 9, characterized in that, The working process of the visualized catheterization and urethral dilation system includes: Insert the flexible endoscope body into the endoscope protective sleeve, and then insert the endoscope body and endoscope protective sleeve together into the urinary catheter; The guidewire is inserted into the guidewire inlet and the water inlet is connected to physiological saline for irrigation, respectively. Anesthesia is injected into the urethra for surface anesthesia. Then, the catheter, flexible endoscope, and endoscope protective sheath are inserted into the urethra together. During the procedure, the direction of the tip of the flexible endoscope is adjusted by the endoscope lever. Determine if there is urethral stricture: If so, remove the urinary catheter, flexible endoscope, and endoscope protective sleeve. Insert the flexible endoscope and endoscope protective sleeve together into the urethra until the tip of the flexible endoscope and endoscope protective sleeve enters the bladder. Confirm that the tip of the guidewire has completely entered the bladder according to the display screen. Then, keep the guidewire in place and remove the endoscope and endoscope protective sleeve along the guidewire. Use a urethral dilator to gradually dilate the urethra to the target size. Insert the urinary catheter along the guidewire using the flexible endoscope and endoscope protective sleeve until the tip of the urinary catheter enters the bladder. Inject saline into the balloon. Then, remove the flexible endoscope, endoscope protective sleeve, and guidewire. Connect the urinary catheter to a urine bag. Otherwise, insert the urinary catheter into the urethra along with the guidewire using the flexible endoscope and endoscope sheath until the tip of the catheter enters the bladder. Inject saline into the balloon, then withdraw the flexible endoscope, endoscope sheath, and guidewire, and connect the urinary catheter to a urine bag.

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