High-adaptability urethral dilator for clinical nursing in urology department

Abstract

The invention discloses a high-adaptability urethral dilator for clinical nursing in the urology department, and relates to the technical field of medical instruments. Comprising a movable fixing rod which is movably inserted into one side of a connecting column, and a spiral expansion rod which is wound on the surface of the fixing rod and is subjected to axial tensile stress change of the fixing rod based on the urethra condition of a patient, the adjusting column is rotatably connected to the interior of the fixing rod and is used for adjusting the gas outlet based on the position and depth of the local narrow opening of the urethra; and the rubber columns are elastically arranged on the surface of the spiral expanding and shrinking rod at equal intervals and expand to locally expand the urethra under the thrust of the pushing cylinder. According to the urethral dilator, the spiral dilation rod with the diameter capable of transversely stretching and retracting is arranged, so that the length of the spiral dilation rod is reduced when the spiral dilation rod is subjected to axial tensile stress, and the transverse diameter is increased to dilate the urethra; according to the urethral dilator, the multiple sets of rubber columns capable of expanding under the airflow pressure are arranged, the adjusting columns capable of rotating to open the rubber columns at different positions are matched, and the local position of the urethra can be expanded in a targeted mode.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a highly adaptable urethral dilator for clinical nursing in urology. Background Technology

[0002] Urethral dilators are frequently used instruments in urological clinical nursing. If urethral stricture is caused by specific local reasons, such as long-term retention of local urethral stones irritating surrounding tissues and forming scar stricture, or iatrogenic injury to the urethra (such as after transurethral operation) causing stricture in only a certain segment of the urethra, then the treatment will be more targeted at dilating the strict local urethra. During the operation, the doctor will accurately locate the stricture site and focus the dilator on that area to relieve the local obstruction.

[0003] Most existing urethral dilators are of a fixed diameter. During use, different diameter instruments must be changed one by one according to the patient's condition to dilate the urethra. Each insertion and withdrawal will cause some friction and irritation to the urethral mucosa, which can easily cause injury and discomfort to the patient. At the same time, most of them dilate the entire urethra, but some urethral strictures or lesions have special shapes, such as segmental strictures or irregular scar tissue. The stricture area may still not receive enough dilation force, which can easily cause recurrence of stricture and affect the recovery of urination function. In addition, the existing full-diameter dilation method will also cause unnecessary dilation of normal urethral tissue, increasing unnecessary pain and harm to the patient.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing highly adaptable urethral dilators used in urological clinical nursing. Summary of the Invention

[0005] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a highly adaptable urethral dilator for clinical nursing in urology, thereby solving the problems mentioned in the background art, such as the need for frequent replacement of instruments with different diameters to dilate the patient's urethra, which can easily cause harm and discomfort to the patient, and the difficulty in dilating targeted local urethral areas, where narrowed areas may still not receive sufficient dilation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a highly adaptable urethral dilator for clinical nursing in urology, comprising a hollow cylindrical tube and a connecting column fixed to one side of the hollow cylindrical tube, further comprising a push cylinder movably inserted into one side of the hollow cylindrical tube to change the gas pressure, a movable fixing rod movably inserted into one side of the connecting column, a spiral dilator wound around the surface of the fixing rod and subject to axial tensile stress changes based on the patient's urethral condition, an adjusting column rotatably connected inside the fixing rod to adjust the gas outlet based on the position and depth of the local narrow opening of the urethra, and rubber columns elastically arranged at equal intervals on the surface of the spiral dilator that expand under the thrust of the push cylinder to locally dilate the urethra; The hollow tube is provided with a limiting component on the side away from the connecting column to prevent gas backflow and limit the position of the pusher. One side of the adjusting column is provided with an adjusting component that can control its rotation.

[0007] Preferably, the limiting component includes a limiting plate fixed to one side of the hollow column tube, and the limiting plate has a sliding groove and a limiting groove respectively on the middle and the two sides of the bottom end, and the surface of the limiting plate has a hanging hole for hanging. The slide groove is opened through one side of the limiting plate, and a connecting rod is movably inserted in the slide groove, with the bottom end of the connecting rod fixedly connected to one end of the push cylinder. The surface of the connecting rod is movably fitted with a limiting block, and the two sides of the top of the limiting block are movably inserted into the limiting groove.

[0008] Preferably, the adjustment assembly includes a rotating disk movably sleeved on the surface of the adjustment column, and the rotating disk is rotatably disposed between the connecting column and the hollow column tube. A pin is fixedly connected to one side of the rotating disk. The pin is rotatably connected to one side of the connecting column, and a matching annular groove is provided on one side of the connecting column.

[0009] Preferably, the adjustment assembly further includes an indicator needle fixed to the side of the rotating disk, and the indicator needle rotates around the surface of the connecting post; The surface of the connecting column is fixedly connected with indicators at equal angles, and the number of indicators is consistent with the number of adjustable modes of the adjusting column, and the multiple sets of indicators are different colors.

[0010] Preferably, a movable ring is movably sleeved on the surface of the connecting column, and a connecting member is fixedly connected to the inner wall of the movable ring. A fixing rod is fixedly inserted in the middle of the connecting member, and the two sides of the connecting member are movably inserted and connected to the connecting column.

[0011] Preferably, a conical head is fixed to one side of both the fixing rod and the spiral expansion rod, and the conical head is configured as a cone with an inclined surface.

[0012] Preferably, a connecting pipe is provided at equal intervals between the fixing rod and the adjusting column, and one side of the connecting pipe extends through the spiral expansion rod to the rubber column, and multiple sets of the connecting pipe are provided at the protrusion of the spiral expansion rod. The surface of the adjusting column is provided with air vents that communicate with the connecting pipes, and the number of air vents is greater than the number of connecting pipes. The positions of the multiple sets of air vents correspond to the positions of the connecting pipes in different scenarios.

[0013] Preferably, support columns are fixedly inserted on both sides of the inner wall of the spiral expansion rod, and the spiral shape and curvature of the support columns are consistent with those of the spiral expansion rod. The two sets of support columns are located at the upper and lower ends of the connecting pipe, and the two do not contact each other. One side of the spiral expansion rod is fixedly connected to one side of the connecting column.

[0014] Preferably, the adjusting column is movably disposed on one side of the hollow column tube, a sealing ring is connected between the adjusting column and the hollow column tube, and a limiting strip that can rotate but does not restrict the left and right movement of the adjusting column is provided at the same angle on the surface of the adjusting column and the inner wall of the rotating disk.

[0015] Preferably, the multiple sets of rubber columns are configured as semi-circular hollow shapes. The rubber columns are fixedly disposed on the surface of the spiral expansion rod and are adapted to the spiral shape of the spiral expansion rod. The multiple sets of rubber columns are disposed on the outer surface of the protrusion of the spiral expansion rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features a spiral dilator with a diameter that can extend and retract laterally. Depending on the degree of urethral stenosis, the moving ring moves the fixed rod and spiral dilator backward, causing the spiral dilator to decrease in length and increase in lateral diameter under axial tensile stress, thus dilating the urethra. Utilizing the characteristic that the lateral diameter of the spiral dilator changes during extension and retraction, the diameter can be quickly adjusted within the urethra without repeatedly removing and inserting new instruments, shortening the overall urethral dilation operation time. This facilitates real-time and precise adjustment of the dilator's diameter during the operation for better dilation results, while also reducing patient discomfort during the dilation process and minimizing the steps of finding and preparing instruments of different diameters, making the operation smoother and more convenient.

[0017] 2. This invention, by setting up multiple sets of rubber columns that can expand under airflow pressure, and in conjunction with an adjustable column that can rotate to open rubber columns at different positions, can specifically dilate local areas of the urethra. Local dilation can better concentrate the force on the area that needs to be treated, and the stimulation to the affected area is relatively concentrated and moderate. Doctors can operate more precisely and easily adjust the force and amplitude of dilation according to the characteristics and degree of local lesions, so that the narrowed area receives sufficient dilation force, thereby better aiding treatment. It is also conducive to the repair and regeneration of local tissues, which is more conducive to the patient's recovery. It also reduces unnecessary traction and stimulation to the surrounding normal urethral tissues, reduces the risk of damage to normal tissues, and reduces the harm and pain suffered by the normal urethra. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the limiting plate, connecting rod, and limiting block of the present invention.

[0021] Figure 4 This is a schematic diagram of the third three-dimensional structure of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the rotating disk, insert, and indicator needle of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the ring, indicator, and connector of the present invention.

[0024] Figure 7 This is a schematic diagram of the fourth three-dimensional structure of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the soft silicone column and stainless steel wire column of the present invention.

[0026] Figure 9 This is a magnified schematic diagram of a portion of the structure of the adjusting column of the present invention after it has been cut open.

[0027] In the diagram: 1. Hollow cylindrical tube; 2. Push cylinder; 3. Limiting plate; 4. Connecting column; 5. Fixing rod; 6. Spiral expansion rod; 7. Conical head; 8. Connecting rod; 9. Limiting block; 10. Moving ring; 11. Adjusting column; 12. Rotating disc; 13. Insert column; 14. Indicator needle; 15. Indicator mark; 16. Connector; 17. Rubber column; 18. Connecting pipe; 19. Air outlet; 20. Support column. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1 to 9 The present invention provides a technical solution: a highly adaptable urethral dilator for clinical nursing in urology, comprising a hollow cylindrical tube 1 and a connecting column 4 fixed to one side of the hollow cylindrical tube 1, and further comprising a push cylinder 2 movably inserted into one side of the hollow cylindrical tube 1 to change the gas pressure, a movable fixed rod 5 movably inserted into one side of the connecting column 4, a spiral dilator 6 wound around the surface of the fixed rod 5 and subject to axial tensile stress changes based on the patient's urethral condition, an adjusting column 11 rotatably connected inside the fixed rod 5 to adjust the gas outlet based on the position and depth of the local narrow opening of the urethra, and rubber columns 17 elastically arranged at equal intervals on the surface of the spiral dilator 6 and expanding under the thrust of the push cylinder 2 to locally dilate the urethra; A limiting component is provided on the side of the hollow column tube 1 away from the connecting column 4 to prevent gas backflow and limit the position of the push cylinder 2; An adjustment component is provided on one side of the adjustment column 11 to control its rotation.

[0030] In practice, the spiral dilator 6 is made of medical-grade silicone, which has excellent flexibility and high adaptability. When encountering a urethral stricture, it can pass through the stricture more smoothly through appropriate bending and deformation, reducing mechanical damage to the urethral mucosa. This is of positive significance in reducing patient pain and avoiding complications caused by urethral injury.

[0031] As a further embodiment of the present invention, the limiting component includes a limiting plate 3 fixed to one side of the hollow column tube 1, and the limiting plate 3 has a sliding groove and a limiting groove respectively on the middle and the two sides of the bottom end, and the surface of the limiting plate 3 has a hanging hole for hanging. A sliding groove is formed through one side of the limiting plate 3, and a connecting rod 8 is movably inserted in the sliding groove, with the bottom end of the connecting rod 8 fixedly connected to one end of the push cylinder 2. The surface of the connecting rod 8 is movably fitted with a limiting block 9, and the two sides of the top of the limiting block 9 are movably inserted into the limiting groove.

[0032] In specific implementation, such as Figure 3As shown, the force of pushing the pusher 2 can be selectively applied according to the degree of urethral stenosis. As the pusher 2 moves, the limiting block 9 slides in the groove of the limiting plate 3. When the rubber column 17 is pushed to expand to an appropriate size and needs to be held for a certain period of time, the limiting block 9 on the surface of the connecting rod 8 is pushed upward and locked into the limiting groove, so that the position of the pusher 2 is limited, reducing the rebound force caused by the expansion and rebound of the rubber column 17 or the backflow of airflow.

[0033] As a further embodiment of the present invention, the adjustment assembly includes a rotating disk 12 movably sleeved on the surface of the adjustment column 11, and the rotating disk 12 is rotatably disposed between the connecting column 4 and the hollow column tube 1. A pin 13 is fixedly connected to one side of the rotating disk 12. The pin 13 is rotatably connected to one side of the connecting post 4 in a circumferential manner, and a matching annular groove is provided on one side of the connecting post 4.

[0034] In specific implementation, such as Figure 4 As shown, in the case of a narrow and shallow position, the indicator needle 14 can be rotated counterclockwise to different positions of the indicator 15. As the indicator needle 14 rotates, it drives the rotating disk 12 and the insert 13 to rotate. The insert 13 rotates in the annular groove of the connecting column 4, and the rotating disk 12 rotates, which drives the adjusting column 11 to rotate in the fixed rod 5.

[0035] As a further embodiment of the present invention, the adjustment assembly also includes an indicator needle 14 fixed to the side of the rotating disk 12, and the indicator needle 14 rotates around the surface of the connecting post 4. The surface of the connecting column 4 is fixedly connected with indicator marks 15 at equal angles, and the number of indicator marks 15 is consistent with the number of adjustable modes of the adjusting column 11. The multiple sets of indicator marks 15 are different colors.

[0036] In specific implementation, such as Figure 5As shown, different colored indicators 15 correspond to different scenarios. When the indicator needle 14 rotates to different indicators 15, when the indicator needle 14 rotates to the middle indicator 15, the adjusting column 11 rotates in the fixed rod 5. At this time, only the air outlet 19 near the conical head 7 is connected to the connecting pipe 18. Then, the hollow column tube 1 is held and the pusher 2 is pushed. The pusher 2 pushes the gas into the adjusting column 11, and it flows through the adjusting column 11 from the open connecting pipe 18 to the corresponding rubber column 17. As the gas continues to enter, the internal pressure of the rubber column 17 gradually increases, so the rubber column 17 near the conical head 7 expands outward, dilating the local urethra. When it is necessary to dilate the urethra at two shallow locations... When the indicator needle 14 drives the adjusting column 11 to rotate to the indicator mark 15 near one of the edges, the adjusting column 11 rotates in the fixed rod 5, and the two sets of air outlets 19 near the conical head 7 are connected to the connecting pipe 18. At this time, the pusher 2 is pushed, and the gas flows from the adjusting column 11 and the two sets of connecting pipes 18 to the corresponding two sets of rubber columns 17, so that the two sets of rubber columns 17 expand for local urethral dilation at two points. When three or more sets of local urethral dilation are needed, when the indicator needle 14 is rotated to the indicator mark 15 at the edge of another set, the positions of multiple sets of air outlets 19 and connecting pipes 18 are all connected, so that multiple sets of rubber columns 17 are expanded outward by the airflow, for dilation at multiple points in the urethra.

[0037] As a further embodiment of the present invention, a movable ring 10 is movably sleeved on the surface of the connecting column 4, and a connecting member 16 is fixedly connected to the inner wall of the movable ring 10. A fixing rod 5 is fixedly inserted in the middle of the connecting member 16, and the two sides of the connecting member 16 are movably inserted and connected to the connecting column 4.

[0038] In specific implementation, such as Figure 7 As shown, when it is necessary to dilate the entire urethra, one hand holds the hollow column tube 1 and the other hand holds the movable ring 10 and pulls it backward. The movement of the movable ring 10 causes the connector 16 and the fixed rod 5 to move backward simultaneously. The connector 16 slides backward in the connecting column 4. The movement of the fixed rod 5 causes the spiral dilator 6 and the conical head 7 to move backward simultaneously. During the stretching process, the spiral dilator 6 and the support column 20 are subjected to axial tensile stress, which causes the overall length to decrease. The diameter of the spiral dilator 6 and the support column 20 will increase accordingly, thereby dilating the patient's entire urethra.

[0039] As a further embodiment of the present invention, a conical head 7 is fixed on one side of both the fixing rod 5 and the spiral expansion rod 6, and the conical head 7 is configured as a cone with an inclined surface.

[0040] In specific implementation, such as Figure 8As shown, the beveled cone shape can better enter the urethra, reducing harm to the patient and resistance during entry. The large diameter end of the cone head 7 is consistent with the sum of the maximum diameters of the fixing rod 5 and the spiral dilator 6. The large diameter end of the cone head 7 is approximately 2-4 mm.

[0041] As a further embodiment of the present invention, a connecting pipe 18 is provided between the fixing rod 5 and the adjusting column 11 at equal intervals, and one side of the connecting pipe 18 extends through the spiral expansion rod 6 to the rubber column 17, and multiple sets of connecting pipes 18 are provided at the protrusion of the spiral expansion rod 6. The surface of the adjusting column 11 is provided with an air outlet 19 that communicates with the connecting pipe 18. The number of air outlets 19 is greater than the number of connecting pipes 18. The positions of the multiple sets of air outlets 19 correspond to the positions of the connecting pipes 18 in different scenarios.

[0042] In specific implementation, such as Figure 9 As shown, it can be used according to the depth of the affected area. The spiral dilator 6 is inserted into the corresponding depth according to the depth of the affected area. When the affected area is shallow, one or two sets of rubber columns 17 at the front end can expand to achieve dilation. When the affected area is deep, three or more sets can be inserted into the deep urethra to allow all the rubber columns 17 to expand and dilate multiple local points. It is suitable for a variety of scenarios. Rubber column 17 is made of medical-grade soft rubber, which has good elasticity. When gas enters, the internal pressure of the soft rubber increases. Because the material properties of soft rubber allow it to change shape within a certain range, the soft rubber will undergo elastic deformation under the action of internal gas pressure, thereby expanding outward and expanding the local affected area.

[0043] As a further embodiment of the present invention, support columns 20 are fixedly inserted on both sides of the inner wall of the spiral expansion rod 6, and the support columns 20 have the same spiral shape and curvature as the spiral expansion rod 6. The two sets of support columns 20 are located at the upper and lower ends of the connecting pipe 18, and the two do not contact each other. One side of the spiral expansion rod 6 is fixedly connected to one side of the connecting column 4.

[0044] In specific implementation, such as Figure 8 As shown, the spiral dilator 6 and the support column 20 are subjected to axial tensile stress during the stretching process, resulting in a reduction in their overall length. The diameter of the spiral dilator 6 and the support column 20 will increase accordingly, thereby dilating the patient's urethra as a whole. The support column 20 is made of stainless steel, which has high strength and hardness, and can provide stable and powerful support for urethral dilation. This compensates for the fact that the medical silicone material of the spiral dilator 6 may not be able to provide enough support to achieve the ideal dilation effect in some severe cases of urethral stricture. The stainless steel material of the support column 20 can more effectively dilate the urethra and help restore urethral patency when dealing with severe urethral stricture.

[0045] As a further embodiment of the present invention, the adjusting column 11 is movably disposed on one side of the hollow column tube 1, and a sealing ring is connected between the adjusting column 11 and the hollow column tube 1. The surface of the adjusting column 11 and the inner wall of the rotating disk 12 are provided with rotatable but not restricting the left and right movement of the adjusting column 11 at the same angle.

[0046] In practice, the sealing ring allows the hollow column tube 1 to form a closed space, allowing airflow to be stably delivered to the rubber column 17 through the adjusting column 11 and the connecting pipe 18. The rotating disc 12 rotates, causing the adjusting column 11 to rotate in the fixed rod 5. At the same time, when the moving ring 10 is pulled backward, the adjusting column 11 moves backward along with the fixed rod 5. The adjusting column 11 can rotate with the rotating disc 12, or it can move left and right in the rotating disc 12.

[0047] As a further embodiment of the present invention, multiple sets of rubber columns 17 are configured as semi-circular hollow shapes. The rubber columns 17 are fixedly disposed on the surface of the spiral expansion rod 6 and are adapted to the spiral shape of the spiral expansion rod 6. Multiple sets of rubber columns 17 are disposed on the outer surface of the protrusion of the spiral expansion rod 6.

[0048] In specific implementation, such as Figure 8 As shown, the semi-circular hollow shape of the rubber column 17 expands outward directly on the outside of the spiral expansion rod 6 after being subjected to gas pressure, forming an outward expansion force. This directly expands the local area and can push the push cylinder 2 to form air pressure according to the narrowing of the patient's local area, pushing the push cylinder 2 to different degrees so that the conical head 7 expands to different degrees.

[0049] Working principle: When a urethral dilator is needed in urological clinical nursing, the affected skin is first routinely disinfected and a sterile drape is laid to prevent infection. Local anesthesia is selected according to the situation. The operator wears sterile gloves, applies an appropriate amount of lubricant to the surface of the conical head 7 to reduce friction with the urethral mucosa, holds the hollow column tube 1 and inserts the push tube 2 into its end. After preparation, lift the affected area and place the conical head 7 at the urethral opening. Hold the hollow column tube 1 and slowly push the fixing rod 5 and the spiral dilator 6 along the urethra. When it is necessary to dilate the entire urethra, hold the hollow column tube 1 with one hand and the moving ring 10 with the other hand and pull it backward. The movement of the moving ring 10 causes the connecting piece 16 and the fixing rod 5 to move backward at the same time. The connecting piece 16 slides backward in the connecting column 4. The movement of the fixing rod 5 causes the spiral dilator 6 and the conical head 7 to move backward at the same time. During the stretching process, the spiral dilator 6 and the support column 20 are subjected to axial tensile stress, which causes the overall length to decrease. The diameter of the spiral dilator 6 and the support column 20 will increase accordingly through spiral expansion, thereby dilating the patient's entire urethra. The patient's urethra can be continuously dilated by holding the movable ring 10 and moving it backward to a certain position. Alternatively, the movable ring 10 can be pushed and pulled back and forth repeatedly to apply dilation force to the urethra, which helps to destroy scar tissue in the urethra. Under repeated mechanical stimulation, the urethra gradually adapts to and maintains the dilated shape. The lateral diameter of the spiral dilator 6 is approximately 2-6 mm. The length of backward pulling of the movable ring 10 can be selected according to the specific condition of the patient's urethra and the amount of dilation required. When local urethral dilation is required, the location, degree, and length of urethral stricture are determined beforehand through examinations such as urethrography and urethral ultrasound. According to the location of the stricture, the conical head 7, the fixing rod 5, and the spiral dilator 6 are inserted into the corresponding position and depth of the patient's urethra. In the case of a shallow stricture, the indicator needle 14 is rotated counterclockwise to the indicator mark 15 at different positions. As the indicator needle 14 rotates, it drives the rotating disc 12 and the insertion post 13 to rotate. The insertion post 13 rotates in the annular groove of the connecting post 4, and the rotating disc 12 drives the adjusting post 11 to rotate in the fixing rod 5. When the indicator needle 14 rotates to different indicator marks 15, when the indicator needle 14 rotates to the middle indicator mark 15, the adjusting column 11 rotates in the fixed rod 5. At this time, only the air outlet 19 near the conical head 7 is connected to the connecting pipe 18. Then, the hollow column tube 1 is held and the pusher 2 is pushed. The pusher 2 pushes the gas into the adjusting column 11, and it flows through the open connecting pipe 18 to the corresponding rubber column 17. As the gas continues to enter, the internal pressure of the rubber column 17 gradually increases, so the rubber column 17 near the conical head 7 expands outward, dilating the local urethra. When it is necessary to dilate the urethra at two shallow positions, when the indicator needle 14 is... When the adjusting column 11 is rotated to the indicator 15 near one of the edges, the adjusting column 11 rotates in the fixed rod 5, and the two sets of air outlets 19 near the conical head 7 are connected to the connecting pipe 18. At this time, the push cylinder 2 is pushed, and the gas flows from the adjusting column 11 and the two sets of connecting pipes 18 to the corresponding two sets of rubber columns 17, so that the two sets of rubber columns 17 expand for local urethral dilation at two points. When three or more sets of local urethral dilation are required, when the indicator needle 14 is rotated to the indicator 15 at the edge of another set, the positions of multiple sets of air outlets 19 and connecting pipes 18 are all connected, so that multiple sets of rubber columns 17 are expanded outward by the airflow for dilation at multiple points in the urethra. The force of pushing the pusher 2 can be selectively applied according to the degree of urethral stenosis. As the pusher 2 moves, the limiting block 9 slides in the groove of the limiting plate 3. When the rubber column 17 is pushed to expand to an appropriate size and needs to be held for a certain period of time, the limiting block 9 on the surface of the connecting rod 8 is pushed upward and locked into the limiting groove, so that the position of the pusher 2 is limited, reducing the rebound force caused by the expansion and rebound of the rubber column 17 or the backflow of airflow. The expansion degree of the rubber column 17 is 2-6mm. Finally, under certain special medical conditions, the spiral expander 6 can be stretched to increase its diameter and the rubber column 17 can be expanded to dilate the affected area. After use, stop pulling the moving ring 10 to restore the overall length and diameter of the spiral expander 6. After resetting the limiting block 9 downward, push the pusher 2 to the bottom or pull it out of the hollow column tube 1 so that the limiting block 9 is pulled out of the limiting plate 3, and the rubber column 17 retracts and resets. Then, remove the whole thing from the patient's urethra. Disinfect the whole thing for subsequent use. After disinfection, hang the whole thing through the hanging hole.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highly adaptable urethral dilator for clinical nursing in urology, comprising a hollow tube (1) and a connecting column (4) fixed to one side of the hollow tube (1), characterized in that: It also includes a pusher (2) that can change the gas pressure by being inserted into one side of the hollow column tube (1), a fixed rod (5) that can be moved by being inserted into one side of the connecting column (4), a spiral expansion rod (6) that is wrapped around the surface of the fixed rod (5) and is subject to the axial tensile stress change of the fixed rod (5) based on the condition of the patient's urethra, an adjustment column (11) that is rotatably connected inside the fixed rod (5) and adjusts the gas outlet based on the position and depth of the local narrow opening of the urethra, and rubber columns (17) that are elastically set at equal intervals on the surface of the spiral expansion rod (6) and expand due to the thrust of the pusher (2) to locally expand the urethra. The hollow tube (1) is provided with a limiting component on the side away from the connecting column (4) to prevent gas backflow and limit the position of the push cylinder (2); One side of the adjustment column (11) is provided with an adjustment component that can control the air outlet position of the rubber column (17) according to the usage scenario.

2. The highly adaptable urethral dilator for clinical nursing in urology according to claim 1, characterized in that: The limiting component includes a limiting plate (3) fixed on one side of the hollow column tube (1), and the limiting plate (3) has a sliding groove and a limiting groove respectively on the middle and bottom sides, and the surface of the limiting plate (3) has a hanging hole for hanging. The slide groove is opened through one side of the limiting plate (3), and a connecting rod (8) is movably inserted in the slide groove, and the bottom end of the connecting rod (8) is fixedly connected to one end of the push cylinder (2). The surface of the connecting rod (8) is movably fitted with a limiting block (9), and the two sides of the top of the limiting block (9) are movably inserted into the limiting groove.

3. The highly adaptable urethral dilator for clinical nursing in urology according to claim 1, characterized in that: The adjustment assembly includes a rotating disk (12) movably sleeved on the surface of the adjustment column (11), and the rotating disk (12) is rotatably disposed between the connecting column (4) and the hollow column tube (1); A pin (13) is fixedly connected to one side of the rotating disk (12). The pin (13) is rotatably connected to one side of the connecting column (4), and a matching annular groove is provided on one side of the connecting column (4).

4. A highly adaptable urethral dilator for clinical nursing in urology according to claim 3, characterized in that: The adjustment assembly also includes an indicator needle (14) fixed to the side of the rotating disk (12), and the indicator needle (14) rotates around the surface of the connecting post (4); The surface of the connecting column (4) is fixedly connected with an indicator (15) at an equal angle, and the number of indicator (15) is consistent with the number of adjustable modes of the adjusting column (11), and the multiple sets of indicator (15) have different colors.

5. A highly adaptable urethral dilator for clinical nursing in urology according to claim 1, characterized in that: The surface of the connecting column (4) is movably fitted with a movable ring (10), and the inner wall of the movable ring (10) is fixedly connected with a connector (16). A fixing rod (5) is fixedly inserted in the middle of the connector (16), and the two sides of the connector (16) are movably inserted and connected to the connecting column (4).

6. A highly adaptable urethral dilator for clinical nursing in urology according to claim 1, characterized in that: The fixed rod (5) and the spiral expansion rod (6) are both fixed with a conical head (7) on one side, and the conical head (7) is set as a cone with an inclined surface.

7. A highly adaptable urethral dilator for clinical nursing in urology according to claim 1, characterized in that: A connecting pipe (18) is connected between the fixed rod (5) and the adjusting column (11) at equal intervals, and one side of the connecting pipe (18) extends through the spiral expansion rod (6) to the rubber column (17). Multiple sets of the connecting pipe (18) are set at the protrusion of the spiral expansion rod (6). The surface of the adjusting column (11) is provided with an air outlet (19) that communicates with the connecting pipe (18), and the number of air outlets (19) is greater than the number of connecting pipes (18). The positions of the multiple sets of air outlets (19) correspond to the positions of the connecting pipes (18) in different scenarios.

8. A highly adaptable urethral dilator for clinical nursing in urology according to claim 7, characterized in that: Support columns (20) are fixedly inserted on both sides of the inner wall of the spiral expansion rod (6), and the spiral shape of the support columns (20) is consistent with that of the spiral expansion rod (6). The two sets of support columns (20) are located at the upper and lower ends of the connecting pipe (18), and the two do not contact each other. One side of the spiral expansion rod (6) is fixedly connected to one side of the connecting column (4).

9. A highly adaptable urethral dilator for clinical nursing in urology according to claim 3, characterized in that: The adjusting column (11) is movably disposed on one side of the hollow column tube (1). A sealing ring is connected between the adjusting column (11) and the hollow column tube (1). The surface of the adjusting column (11) and the inner wall of the rotating disk (12) are provided with a limiting strip that can rotate but does not restrict the left and right movement of the adjusting column (11) at the same angle.

10. A highly adaptable urethral dilator for clinical nursing in urology according to claim 1, characterized in that: Multiple sets of the rubber columns (17) are configured as semi-circular hollow shapes. The rubber columns (17) are fixedly set on the surface of the spiral expansion rod (6) and are adapted to the spiral shape of the spiral expansion rod (6). Multiple sets of the rubber columns (17) are set on the outer surface of the protrusion of the spiral expansion rod (6).

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