A female child ureteral stent tube taking-out device

Abstract

The present application relates to a ureteral stent removal device for children, aiming to simplify the surgical operation process, improve the safety and success rate of the operation, and improve the comfort of the patient. The device is mainly composed of three parts: outer sheath, push rod and capture coil, made of medical grade stainless steel and elastic material. The outer sheath is provided with a scale on the surface for indicating the insertion depth; the push rod can slide along the outer sheath and push the capture coil to expand into an umbrella-shaped structure to capture and pull out the ureteral stent. The device is easy to operate, does not require complex equipment and anesthesia, can significantly reduce the risk of complications such as urethral injury and infection, improve the efficiency of the operation, and reduce the occupation of medical resources. At the same time, the design of the device pays attention to the comfort of the patient, reduces the pain and discomfort during the operation process, and enhances the acceptance of the operation by the children.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a device for removing a ureteral stent tube for children. Background Technology

[0002] A ureteral stent is a catheter placed in the ureter after upper urinary tract surgery in children to facilitate urine drainage. One end is inserted into the renal pelvis, and the other end is left in the bladder. Both ends are curved in a pigtail shape and need to be removed from the body after surgical recovery.

[0003] Traditional cystectomy for children requires the use of a cystoscope and forceps. First, the procedure requires general anesthesia again, increasing the medical burden. Second, the equipment requirements make it unsuitable for primary care facilities. Third, some children may suffer urethral injury. Fourth, other cystectomy instruments cannot guarantee successful removal in one attempt.

[0004] Therefore, there is a need for a device for removing ureteral stents specifically for children, which has an outer sheath, a push rod, and an umbrella-shaped capture coil. The entire device has a simple structure, is easy to operate, and can ensure stable removal of the ureteral stent in one attempt. Summary of the Invention

[0005] In order to solve the problems of the prior art, the present invention provides a device for removing ureteral stent tubes for children.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: Firstly, a device for removing a ureteral stent tube for children, comprising: The outer sheath is used for insertion into the bladder via the urethra. The push rod is placed inside the outer sheath and can slide along the inside of the outer sheath; A capture coil, one end of which is connected to the head end of the push rod, and the other end extends outward through the head end of the outer sheath to form an umbrella-shaped structure for capturing and fixing the tail end of the ureteral stent tube; The capture coil is made of an elastic material with good toughness and extensibility, and can fully unfold after being pushed into the bladder to make full contact with the tail of the ureteral stent, thus achieving stable capture in one go.

[0007] In the first aspect, its core components include an outer sheath, a push rod, and a capture coil. The device is inserted into the bladder through the urethra and uses the umbrella-shaped structure of the capture coil to capture and fix the tail end of the ureteral stent, thereby enabling the removal of the stent.

[0008] Outer sheath: As the main part of the device, the outer sheath is responsible for being inserted into the bladder through the urethra and serves as a carrier for the push rod and capture coil.

[0009] Push rod: The push rod is located inside the outer sheath and can slide along the inside of the sheath. When it is necessary to remove the ureteral stent tube, the capture coil is deployed and the stent tube is captured by pushing the push rod.

[0010] Capture coil: The capture coil is made of an elastic material with good toughness and extensibility. When the push rod is pushed, the capture coil can fully unfold to form an umbrella-like structure, thereby making close contact with the tail of the ureteral stent and achieving stable capture in one go.

[0011] Traditional ureteral stent removal surgery typically requires an operating room and complex equipment such as anesthesia and a cystoscope. This device, however, can be performed in an outpatient clinic or in a hospital treatment room, eliminating the need for anesthesia and complex equipment, significantly simplifying the procedure.

[0012] Thanks to the use of elastic materials and an umbrella-shaped structure design, the capture coil can fully unfold and make close contact with the tail of the ureteral stent tube, avoiding the problems of multiple entry and exit from the urethra and damage to the urethra that may occur in traditional tube removal methods, thereby improving the safety of the operation.

[0013] By using precise scale settings and applying lubricant, doctors can accurately determine the insertion length of the outer sheath and push rod, ensuring that the capture coil can completely cover the tail end of the ureteral stent, thereby improving the success rate of stent retrieval.

[0014] In one specific embodiment of the first aspect, the number of capture coils is set to eight, and the material is set to polypropylene.

[0015] In one specific embodiment of the first aspect, the surface of the outer sheath is provided with graduations to indicate the depth to which the outer sheath is inserted into the bladder; The push rod surface is also provided with a scale to indicate the length of the capture coil extended from the outer sheath, ensuring that the capture coil can completely cover the tail end of the ureteral stent tube in the bladder.

[0016] In one specific embodiment of the first aspect, the tip of the outer sheath is designed to be smooth and slightly tapered to facilitate insertion into the urethra and reduce patient discomfort; The surfaces of the outer sheath and the push rod are coated with a lubricating substance, such as paraffin oil, to reduce friction during insertion and removal.

[0017] Secondly, a method for using a pediatric ureteral stent removal device includes the following steps: Step 1: Have the child empty their bladder; Step 2: After applying lubricant to the outer sheath of the device, insert it into the bladder through the urethra; Step 3: Determine the position of the tip of the outer sheath based on the markings on its surface and the urine flowing out along it. Step 4: Push the push rod inside the sheath to fully extend the capture coil into the bladder; Step 5: Gently rotate the entire device and slowly pull the push rod outward to make the capture coil cover the tail end of the ureteral stent tube; Step Six: Tighten the lever and attempt to pull out the ureteral stent tube; Step 7: If there is no tension, consider that the coil has not been captured. You can push the push rod in again to tighten the capture coil repeatedly. Step 8: Gently and slowly pull out the entire device and remove the ureteral stent tube.

[0018] In the second aspect, the procedure includes steps such as emptying the bladder, applying lubricant, inserting the outer sheath, determining the location, pushing the plunger, capturing the stent tube, removing the stent tube, and withdrawing the device. These steps are clear and easy for doctors to understand and perform.

[0019] The beneficial effects of this invention are as follows: 1. This device features a simple structure and convenient operation, requiring no complex equipment or anesthesia, greatly simplifying the surgical procedure. Surgeons can quickly and accurately remove the ureteral stent, improving surgical efficiency and reducing surgical time and the consumption of medical resources. The device uses elastic materials and an umbrella-shaped structure design, avoiding the problems of multiple insertions and removals into the urethra and urethral damage that may occur with traditional stent removal methods. This design not only improves surgical safety but also significantly reduces the risk of complications such as urethral injury and infection, thereby ensuring the child's postoperative recovery. 2. Through precise scale settings and the application of lubricating agents, doctors can accurately determine the insertion and withdrawal lengths, ensuring that the capture coil completely covers the tail end of the ureteral stent. This design improves the success rate of the procedure, reduces reoperations due to improper operation, and thus alleviates the suffering of children and the medical burden. 3. The device is designed with patient comfort in mind, reducing pain and discomfort during the procedure. This design not only improves patient comfort but also increases patient acceptance of the surgery, helping children cooperate better and promoting postoperative recovery. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the overall exploded structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the overall structure of the capture coil in the open state of the present invention.

[0024] Figures 1 to 4 In the middle: 1. Outer sheath; 2. Push rod; 3. Capture coil. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 4 The device shown is a ureteral stent removal device for children, comprising: an outer sheath 1 for insertion into the bladder via the urethra; a push rod 2 placed inside the outer sheath 1 and slidable along the inside of the outer sheath 1; and a capture coil 3, one end of which is connected to the head end of the push rod 2, and the other end extending outward through the head end of the outer sheath 1 to form an umbrella-shaped structure for capturing and fixing the tail end of the ureteral stent tube; wherein, the capture coil 3 is made of an elastic material, has good toughness and extensibility, and can fully unfold after being pushed into the bladder to make full contact with the tail end of the ureteral stent tube, achieving a stable capture in one go.

[0027] The number of capture coils 3 is set to eight, and the material is polypropylene. The surface of the outer sheath 1 is marked with graduations to indicate the depth of insertion into the bladder; the surface of the push rod 2 is also marked with graduations to indicate the length of extension of the capture coil 3 out of the outer sheath 1, ensuring that the capture coil 3 can completely cover the tail end of the ureteral stent in the bladder. The tip of the outer sheath 1 is designed to be smooth and slightly tapered to facilitate insertion into the urethra and reduce patient discomfort; the surfaces of both the outer sheath 1 and the push rod 2 are coated with a lubricant, such as paraffin oil, to reduce friction during insertion and withdrawal.

[0028] Working Principle: A method for using a pediatric ureteral stent removal device includes the following steps: Step 1: Have the child empty their bladder; Step 2: Apply lubricant to the surface of the outer sheath 1 of the device and insert it into the bladder through the urethra; Step 3: Determine the position of the tip of the outer sheath 1 based on the markings on its surface and the urine flowing out along it; Step 4: Push the push rod 2 inside the sheath to fully extend the capture coil 3 into the bladder; Step 5: Gently rotate the entire device and slowly pull the push rod 2 outwards to allow the capture coil 3 to engage the tail end of the ureteral stent; Step 6: Tighten the push rod 2 and attempt to pull out the ureteral stent; Step 7: If there is no tension, it indicates that the coil 3 has not been captured. Push the push rod 2 in again and repeat tightening the capture coil 3; Step 8: Gently and slowly withdraw the entire device to remove the ureteral stent.

[0029] Example: Real-world scenario description A 5-year-old boy underwent laparoscopic pyeloplasty at a provincial hospital due to congenital ureteropelvic junction stenosis on the left side. A ureteral stent (double-J stent) was placed to support the ureter and promote recovery. Post-surgery, the child recovered well, but recently the parents noticed that his urine was light red after excessive activity, which improved after rest, but recurred intermittently. The parents then took the child to the local children's hospital, where examination revealed a "left ureteral double-J stent indwelling state," and it was decided to remove the ureteral stent.

[0030] II. Usage Examples Preoperative preparation: The doctor first conducted necessary preoperative examinations on the child, including urinalysis, blood routine, and coagulation function tests, and confirmed that the child had no contraindications for surgery. At the same time, the doctor explained the surgical procedure, possible risks, and postoperative precautions to the child's parents in detail, and the parents signed the surgical consent form.

[0031] Device preparation: The doctor selected a ureteral stent removal device specifically designed for children, which consists of an outer sheath, a push rod, and a capture coil. The doctor applied an appropriate amount of lubricant to the surface of the outer sheath to reduce friction during insertion into the urethra.

[0032] Surgical Procedure: The surgery was performed in an outpatient treatment room without anesthesia. The surgeon inserted the outer sheath of the device into the bladder through the child's urethra, determining the insertion depth based on the markings on the sheath. The surgeon then slowly pushed the push rod inside the sheath, fully extending the capture coil into the bladder and allowing it to fully unfold into an umbrella-like structure. While gently rotating the entire device, the surgeon slowly pulled the push rod outward, allowing the capture coil to encircle the end of the ureteral stent tube. After confirming successful capture, the surgeon tightened the push rod, successfully removing the ureteral stent tube.

[0033] Postoperative care: After removing the ureteral stent, the doctor performed necessary postoperative care on the child, including observing urine color and urination, and administering antibiotics to prevent infection. The doctor also explained postoperative precautions to the child's parents in detail, including drinking plenty of water and avoiding strenuous exercise.

[0034] III. Explanation of the advantages of the device Easy to operate: The device has a simple structure and is easy to operate, requiring no complex equipment or anesthesia, greatly simplifying the surgical procedure. In this case, the surgery could be completed in an outpatient treatment room without hospitalization, saving medical resources and time.

[0035] High safety: The use of elastic materials and an umbrella-shaped structure design avoids the problems of repeated insertion and removal of the urethra and urethral damage that may occur with traditional catheter removal methods. In this case, the child did not experience any urethral injury or complications during the procedure and recovered well postoperatively.

[0036] High success rate: Through precise scale settings and the application of lubricant, doctors can accurately determine the insertion and withdrawal lengths, ensuring that the capture coil completely covers the tail end of the ureteral stent. In this case, the doctor successfully captured and removed the ureteral stent in one attempt, improving the success rate of the procedure.

[0037] High patient comfort: The device is designed with patient comfort in mind, reducing pain and discomfort during the procedure. In this case, the child did not experience significant pain or discomfort during the procedure, nor did he experience any discomfort afterward.

[0038] Reduced complications: Due to its ease of operation and high safety, this device can significantly reduce complications that may occur with traditional catheter removal methods, such as urethral injury and infection. In this case, the child did not experience any complications after the surgery and recovered smoothly.

[0039] In summary, the ureteral stent removal device designed specifically for children has significant advantages in practical scenarios, such as ease of operation, high safety, high success rate, high patient comfort, and reduced complications, providing a new and effective solution for the removal of ureteral stents in children.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for removing a ureteral stent tube for children, characterized in that, include: The outer sheath is used for insertion into the bladder via the urethra. The push rod is placed inside the outer sheath and can slide along the inside of the outer sheath; A capture coil, one end of which is connected to the head end of the push rod, and the other end extends outward through the head end of the outer sheath to form an umbrella-shaped structure for capturing and fixing the tail end of the ureteral stent tube; The capture coil is made of an elastic material with good toughness and extensibility, and can fully unfold after being pushed into the bladder to make full contact with the tail of the ureteral stent, thus achieving stable capture in one go.

2. The ureteral stent removal device for children according to claim 1, characterized in that: The number of capture coils is set to eight, and the material is set to polypropylene.

3. The ureteral stent removal device for children according to claim 1, characterized in that: The outer sheath has graduations on its surface to indicate the depth to which it is inserted into the bladder; The push rod surface is also provided with a scale to indicate the length of the capture coil extended from the outer sheath, ensuring that the capture coil can completely cover the tail end of the ureteral stent tube in the bladder.

4. The ureteral stent removal device for children according to claim 1, characterized in that: The tip of the outer sheath is designed to be smooth and slightly tapered to facilitate insertion into the urethra and reduce patient discomfort. The surfaces of the outer sheath and the push rod are coated with a lubricating substance, such as paraffin oil, to reduce friction during insertion and removal.

5. A pediatric ureteral stent removal device according to any one of claims 1 to 4, characterized in that, The usage method includes the following steps: Step 1: Have the child empty their bladder; Step 2: After applying lubricant to the outer sheath of the device, insert it into the bladder through the urethra; Step 3: Determine the position of the tip of the outer sheath based on the markings on its surface and the urine flowing out along it. Step 4: Push the push rod inside the sheath to fully extend the capture coil into the bladder; Step 5: Gently rotate the entire device and slowly pull the push rod outward to make the capture coil cover the tail end of the ureteral stent tube; Step 6: Tighten the lever and attempt to pull out the ureteral stent tube; Step 7: If there is no tension, consider that the coil has not been captured. You can push the push rod in again to tighten the capture coil repeatedly. Step 8: Gently and slowly pull out the entire device and remove the ureteral stent tube.

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