Urethra administration device and method for pediatric urinary surgery

Abstract

The invention relates to the technical field of medical appliances, in particular to a urethra administration device and method for pediatric urinary surgery, comprising a support component, a flow guide device placed at the top end of the support component, and a plastic strip fixedly mounted at one end of the flow guide device away from the support component; the flow guide device comprises a plastic cannula, a hose, a groove, a first one-way valve, a first injection tube, an alignment sleeve and a second one-way valve, the plastic cannula is fixedly mounted at the rear end of the hose, the hose is fixedly mounted at the rear end of the second one-way valve, the second one-way valve is fixedly mounted at the rear end of the alignment sleeve, and the alignment sleeve slidably sleeves the rear end of the first injection tube. The grooves are symmetrically formed in the top end and the bottom end of the first injection tube, and the first one-way valve is fixedly installed at the top end, close to the plastic insertion tube, of the first injection tube. Through the arrangement of the flow guiding device and the supporting part, the purpose that the girl urethra medicine feeding device feeds medicine without inserting and pulling out the injection head for the second time and guides the medicine in an extending mode is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to a urethral drug delivery device and method for pediatric urology. Background Art

[0002] The urethra is a tube that leads from the bladder to the outside of the body. The male urethra is slender, about 18 cm long, starting from the internal urethral opening of the bladder and ending at the external urethral opening. It passes through the prostate, the membrane and the cavernous body of the penis. The male urethra has both urination and ejaculation functions. The female urethra is thick and short, about 5 cm long, starting from the internal urethral opening, passing through the front of the vagina, and opening in the vaginal vestibule. The male urethra has a ring of sphincter composed of transverse striated muscles in the membranous part of the urethra, called the external urethral sphincter, which is controlled by consciousness. When the female urethra passes through the urogenital diaphragm in the perineum, it is surrounded by the urethrovaginal sphincter. This muscle is a striated muscle and is also controlled by will.

[0003] A urethral drug delivery device is a medical device used to deliver drugs directly into the urethra for treatment. This device is usually designed with great precision to ensure that the drugs can be delivered to the lesion site accurately and safely while alleviating the patient's pain and discomfort.

[0004] At present, the urethral drug delivery devices for girls on the market are used. Because they are directly inserted into the urethra and the front end of the syringe is short, it is not possible to effectively penetrate into the urethra. At the same time, the urethra often needs to be repeatedly inserted or pulled out when flushing, disinfecting and administering medicine, which causes additional pain to the girls. As a result, the existing urethral drug delivery devices for girls cannot deliver medicine and extend the introduction of medicine without the need for secondary insertion and removal of the injection head. Therefore, a device is needed to improve the above-mentioned problems. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a urethral drug delivery device and method for pediatric urology.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a urethral drug delivery device and method for pediatric urology, including a supporting component, a flow guide device is placed on the top of the supporting component, and a plastic strip is fixedly installed on the end of the flow guide device away from the supporting component. The flow guide device includes a plastic cannula, a hose, a groove, a first one-way valve, a first injection tube, an alignment sleeve and a second one-way valve. The plastic cannula is fixedly installed at the rear end of the hose, the hose is fixedly installed at the rear end of the second one-way valve, the second one-way valve is fixedly installed at the rear end of the alignment sleeve, the alignment sleeve is slidably sleeved on the rear end of the first injection tube, the groove is symmetrically opened on the top and bottom ends of the first injection tube, the first one-way valve is fixedly installed on the top of the first injection tube close to the plastic cannula, the supporting component includes a transmission device, an alignment device and a docking device, the docking device is slidably inserted into the top of the alignment device, and the alignment device is slidably inserted into the top of the transmission device.

[0007] Specifically, the transmission device includes a support base, a driving motor, a screw rod, a displacement support rod, a limiting sleeve and a support base. The support base is symmetrically fixedly installed at the top rear end of the support base, the driving motor is fixedly installed inside the support base close to the support base, the screw rod is fixedly installed at the front end center of the driving motor, the displacement support rod is threadedly sleeved on the outer ring of the screw rod, and the limiting sleeve is fixedly installed on the top end of the displacement support rod.

[0008] Specifically, the alignment device includes a connecting base, an insertion rod, a magnetic strip, a support top frame, a first piston rod, a limiting card plate, a second piston rod, an L-shaped air cylinder, a first spring, a support vertical frame, a touch pad and a guide vertical rod, the connecting base is symmetrically fixedly installed at the bottom end of the support top frame, the insertion rod is symmetrically fixedly installed at the bottom end of the connecting base, the magnetic strip is fixedly installed between the two connecting bases, the support vertical frame is fixedly installed at the top rear end of the support top frame, the L-shaped air cylinder is fixedly installed at the top two ends of the support vertical frame, the second piston rod is slidably inserted into the bottom end of the L-shaped air cylinder, the limiting card plate is fixedly installed at the end of the second piston rod away from the L-shaped air cylinder, the first piston rod is slidably inserted into the top end of the L-shaped air cylinder, the touch pad is fixedly installed at the top of the first piston rod, the first spring is symmetrically fixedly installed between the touch pad and the support vertical frame, the guide vertical rod symmetrically slides through the touch pad and is installed at the top of the support vertical frame, and the guide vertical rod is located at the inner circle of the first spring.

[0009] Specifically, the docking device includes a second syringe and an arc gasket, and the arc gasket is fixedly installed on the outer ring of the second syringe.

[0010] Specifically, the plastic strip is fixedly mounted on the front end surface of the plastic insert, the first injection tube is placed on the top of the support base, the insertion rod is slidably inserted inside the top of the support base, and the second syringe is slidably inserted inside the rear end of the support top frame.

[0011] Specifically, the surface of one end of the plastic insert away from the hose is arranged in an arc shape, and a liquid permeable hole is opened on the outer ring of the plastic insert, the groove is fitted with the inner ring surface opposite to the support base and the connecting substrate, and the top of the support base is symmetrically provided with circular holes.

[0012] Specifically, a placement groove is opened inside the limiting sleeve, a sliding groove is opened at the top center of the support base away from the support base, the interior of the L-shaped air cylinder is set in a hollow state, and a closed cavity is formed between the second piston rod, the L-shaped air cylinder and the first piston rod.

[0013] Specifically, the top of the opposite side ends of the limiting clamping plate and the bottom outer ring of the arc gasket are both inclined at 45 degrees, and the supporting top frame is provided with a mounting hole near the top center of the supporting vertical frame.

[0014] Specifically, the support base also includes a second spring, a limiting ring, an extension bracket and a support front plate. The support front plate is fixedly installed at the rear end bottom of the support base, the extension bracket is slidably connected to the two ends of the support front plate, the second spring is fixedly installed between the extension bracket and the support front plate, the limiting ring is fixedly installed on the opposite end of the extension bracket, and an extension round rod is fixedly installed at the center of the two ends of the support front plate, and the second spring is located at the outer circle of the extension round rod.

[0015] A method for using a urethral drug delivery device for pediatric urology comprises the following steps:

[0016] S1. First, the first syringe and the second syringe are filled with disinfectant and liquid medicine respectively, and then the first syringe is placed on the top of the support base until the piston handle inside the first syringe is placed inside the limiting sleeve, and then the plastic cannula is inserted into the child's urethra, and then the driving motor is started to drive the screw rod to rotate, so that the limiting sleeve can drive the piston into the first syringe, so that the disinfectant inside the first syringe can enter the plastic cannula through the hose, so that the plastic cannula can flush the inside of the urethra;

[0017] S2. After the urethra is flushed, the second syringe can be connected to the first one-way valve through the support top frame, and the arc gasket can be limited and positioned by the limiting card plate to prevent the second syringe from falling, thus completing the work of connecting the second syringe with the first injection tube;

[0018] S3. Finally, the driving motor can be started to drive the screw rod to rotate in the opposite direction, so that the limiting sleeve moves to the front end, and the piston inside the first injection tube can move to the front end. The second one-way valve can be set to prevent the plastic cannula from absorbing air and flowing into the first injection tube. Subsequently, when the piston rod moves to the rear end, the medicine inside the second syringe can be drawn into the first injection tube through the first one-way valve. Subsequently, the driving motor is started again to drive the screw rod to rotate, so that the piston inside the first injection tube moves to the rear end, so that the medicine inside the first injection tube can be discharged into the urethra through the plastic cannula.

[0019] Beneficial effects of the present invention:

[0020] First, when the disinfectant is injected through the first injection tube, the first one-way valve of the present invention can prevent the disinfectant from flowing out from the top of the first injection tube. At the same time, the plastic cannula penetrates into the patient's urethra, and the hose is interconnected with the first injection tube, so that the first injection tube can flow the disinfectant from the plastic cannula into the patient's urethra, thereby completing the work of flushing and disinfecting the urethra. Moreover, when the piston inside the first injection tube is reset, the liquid inside the second syringe can be sucked into the interior of the first injection tube through the first one-way valve. At the same time, the second one-way valve can also prevent the plastic cannula from absorbing water stains inside the urethra, thereby completing the work of drug delivery and disinfection without secondary plugging and unplugging.

[0021] Secondly, the present invention enables the plastic cannula to be connected with the hose so that the plastic cannula can be extended and moved to a specified length for operation. At the same time, the plastic cannula is driven out of the urethra by pulling the hose, so that the plastic cannula can be prevented from being inserted too deeply into the urethra. At the same time, the alignment sleeve and the first injection tube can be quickly separated and connected, so that disinfectant water can be easily added to the first injection tube to complete the work of extending and introducing the plastic cannula. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the flow guide device in the present invention from a front perspective;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the support component in the present invention from a front perspective;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the transmission device of the present invention from the front perspective;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the alignment device in the present invention from a front perspective;

[0028] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram in the middle;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the docking device of the present invention from a front perspective;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure from the rear perspective of the second embodiment of the support base in the present invention.

[0031] In the figure: 1-guiding device, 2-support component, 3-plastic strip, 4-plastic cannula, 5-hose, 6-groove, 7-first one-way valve, 8-first injection tube, 9-alignment sleeve, 10-second one-way valve, 11-transmission device, 12-alignment device, 13-docking device, 14-support base, 15-drive motor, 16-screw rod, 17-displacement support rod, 18-limiting sleeve, 19-support base, 20-connecting base plate, 21-insertion rod, 22-magnetic strip, 23-support top frame, 24-first piston rod, 25-limiting card plate, 26-second piston rod, 27-L-type air cylinder, 28-first spring, 29-support vertical frame, 30-touch panel, 31-guide vertical rod, 32-second syringe, 33-arc gasket, 34-second spring, 35-limiting collar, 36-extension bracket, 37-support front plate. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0033] The present invention is further described below in conjunction with the accompanying drawings.

[0034] Example 1

[0035] like Figure 1 , Figure 2 and Figure 3As shown, a urethral drug delivery device and method for pediatric urology of the present invention comprises a supporting component 2, a flow guide device 1 is placed at the top of the supporting component 2, a plastic strip 3 is fixedly installed at one end of the flow guide device 1 away from the supporting component 2, the flow guide device 1 comprises a plastic insert 4, a hose 5, a groove 6, a first one-way valve 7, a first injection tube 8, an alignment sleeve 9 and a second one-way valve 10, the plastic insert 4 is fixedly installed at the rear end of the hose 5, the hose 5 is fixedly installed at the rear end of the second one-way valve 10, the second one-way valve 10 is fixedly installed at the rear end of the alignment sleeve 9, the alignment sleeve 9 is slidably sleeved on the rear end of the first injection tube 8, the groove 6 is symmetrically opened on the top and bottom ends of the first injection tube 8, the first one-way valve 7 is fixedly installed on the top of the first injection tube 8 near the plastic insert 4, the supporting component 2 comprises a transmission device 11, an alignment device 12 and a docking device 13, the docking device 13 is slidably inserted into the top end of the alignment device 12, and the alignment device 12 is slidably inserted into the top end of the transmission device 11.

[0036] like Figure 4 The transmission device 11 includes a support base 14, a driving motor 15, a screw rod 16, a displacement support rod 17, a limiting sleeve 18 and a support base 19. The support base 19 is symmetrically fixedly installed at the top rear end of the support base 14. The driving motor 15 is fixedly installed inside the support base 14 close to the support base 19. The screw rod 16 is fixedly installed at the front center of the driving motor 15. The displacement support rod 17 is threadedly sleeved on the outer ring of the screw rod 16. The limiting sleeve 18 is fixedly installed on the top of the displacement support rod 17. When the screw rod 16 rotates forward and reversely, it can drive the limiting sleeve 18 to move back and forth.

[0037] like Figure 5 and Figure 6The alignment device 12 includes a connecting substrate 20, an insert rod 21, a magnetic strip 22, a support top frame 23, a first piston rod 24, a limiting card plate 25, a second piston rod 26, an L-shaped air cylinder 27, a first spring 28, a support vertical frame 29, a touch panel 30 and a guide vertical rod 31. The connecting substrate 20 is symmetrically fixedly installed at the bottom end of the support top frame 23, the insert rod 21 is symmetrically fixedly installed at the bottom end of the connecting substrate 20, the magnetic strip 22 is fixedly installed between the two connecting substrates 20, the support vertical frame 29 is fixedly installed at the top rear end of the support top frame 23, the L-shaped air cylinder 27 is fixedly installed at both ends of the top of the support vertical frame 29, and the second piston rod 26 is slidably plugged into the bottom end of the L-shaped air cylinder 27. Internally, the limiting card plate 25 is fixedly mounted on the end of the second piston rod 26 away from the L-shaped air cylinder 27, the first piston rod 24 is slidably inserted into the top of the L-shaped air cylinder 27, the touch panel 30 is fixedly mounted on the top of the first piston rod 24, the first spring 28 is symmetrically fixedly mounted between the touch panel 30 and the supporting vertical frame 29, the guide vertical rod 31 symmetrically slides through the touch panel 30 and is mounted on the top of the supporting vertical frame 29, and the guide vertical rod 31 is located at the inner circle of the first spring 28. When the arc gasket 33 contacts the limiting card plate 25, the limiting card plate 25 can be squeezed to drive the second piston rod 26 to move toward the end away from the L-shaped air cylinder 27, so that the touch panel 30 can squeeze the first spring 28.

[0038] like Figure 7 The docking device 13 includes a second syringe 32 and an arc gasket 33 . The arc gasket 33 is fixedly mounted on the outer ring of the second syringe 32 to facilitate docking and cooperation between the arc gasket 33 and the limiting clamping plate 25 .

[0039] The plastic strip 3 is fixedly mounted on the front end surface of the plastic insert 4, the first injection tube 8 is placed on the top end of the support base 19, the insert rod 21 is slidably inserted into the top end of the support base 19, and the second syringe 32 is slidably inserted into the rear end of the support top frame 23. The surface of the end of the plastic insert 4 away from the hose 5 is arranged in an arc state, and a liquid permeable hole is provided on the outer ring of the plastic insert 4. The groove 6 is fitted with the inner ring surface of the support base 19 and the connecting substrate 20. The top of the support base 19 is symmetrically provided with circular holes, the interior of the limiting sleeve 18 is provided with a placement groove, and the support base 14 is provided with a sliding groove at the top center away from the support base 19. The interior of the L-shaped gas cylinder 27 is arranged in a hollow state, and a closed cavity is formed between the second piston rod 26, the L-shaped gas cylinder 27 and the first piston rod 24. The top of the side end opposite to the limiting card plate 25 and the bottom outer ring of the arc gasket 33 are both inclined at 45°, and the support top frame 23 is provided with a mounting hole near the top center of the support vertical frame 29.

[0040] A method for using a urethral drug delivery device for pediatric urology comprises the following steps:

[0041] S1. First, the first injection tube 8 and the second injection syringe 32 are filled with disinfectant and liquid medicine respectively, and then the first injection tube 8 is placed on the top of the support base 19 until the piston handle inside the first injection tube 8 is placed inside the limiting sleeve 18, and then the plastic cannula 4 is inserted into the child's urethra, and then the driving motor 15 is started to drive the screw rod 16 to rotate, so that the limiting sleeve 18 can drive the piston to enter the first injection tube 8, so that the disinfectant inside the first injection tube 8 can enter the plastic cannula 4 through the hose 5, so that the plastic cannula 4 can flush the inside of the urethra;

[0042] S2, after the urethra is flushed, the second syringe 32 can be inserted through the support frame 23 and connected to the first one-way valve 7, and the arc gasket 33 can be limited and positioned by the limiting clamp 25 to prevent the second syringe 32 from falling, thus completing the work of connecting the second syringe 32 with the first injection tube 8;

[0043] S3. Finally, the driving motor 15 can be started to drive the screw rod 16 to rotate in the opposite direction, so that the limiting sleeve 18 moves to the front end, so that the piston inside the first injection tube 8 can move to the front end. The second one-way valve 10 can be set to prevent the plastic cannula 4 from absorbing air and flowing into the first injection tube 8. Subsequently, when the piston rod moves to the rear end, the medicine inside the second syringe 32 can be drawn into the first injection tube 8 through the first one-way valve 7. Subsequently, the driving motor 15 is started again to drive the screw rod 16 to rotate, so that the piston inside the first injection tube 8 moves to the rear end, so that the medicine inside the first injection tube 8 can be discharged into the urethra through the plastic cannula 4.

[0044] The working principle of Example 1 is as follows: when in use, disinfectant is first sucked into the interior of the first injection tube 8, and liquid medicine is sucked into the interior of the second syringe 32. Subsequently, the first injection tube 8 can be moved and placed on the top of the support base 19, and the groove 6 at the bottom end of the first injection tube 8 is sleeved on the support base 19, so that the first injection tube 8 can be supported and placed horizontally on the top of the support base 19 until the first one-way valve 7 is placed in a vertically upward posture. Subsequently, the alignment sleeve 9 can be slidably sleeved on the nipple at the rear end of the first injection tube 8, so that the hose 5 is interconnected with the interior of the first injection tube 8. At the same time, when the first injection tube 8 is placed on the support base 19, the piston handle inside the first injection tube 8 can be inserted into the top of the limiting sleeve 18. Subsequently, the plastic cannula can be inserted into the plastic cannula. 4 is inserted into the urethra of the child, and then the driving motor 15 is started to drive the screw rod 16 to rotate counterclockwise, and the displacement support rod 17 is threadedly sleeved on the outer ring of the screw rod 16, and the top of the displacement support rod 17 can be displaced in the movable groove at the center of the top of the supporting base 14, so that the limiting sleeve 18 can drive the piston handle to move in a straight line toward the inside of the first injection tube 8, so that the disinfectant water inside the first injection tube 8 can be squeezed through the hose 5 and discharged into the inside of the plastic insert tube 4. The outer ring surface of the plastic insert tube 4 is provided with a liquid permeable hole, so that the disinfectant water can flow out from the inside of the plastic insert tube 4, so that the inside of the urethra of the child can be flushed. The rotation speed of the screw rod 16 is slow, so that the piston handle inside the first injection tube 8 can move slowly and uniformly, thereby preventing the plastic insert tube 4 from spraying a large amount of water. The urethra is stimulated. Subsequently, when the internal flushing of the urethra is completed, the second syringe 32 can be inserted into the interior of the supporting top frame 23, so that the arc gasket 33 can pass through the top of the limiting card plate 25. The top of the limiting card plate 25 and the bottom outer circle of the arc gasket 33 are both inclined at 45°, so that the smoothness of the arc gasket 33 passing through the limiting card plate 25 can be improved. Subsequently, when the arc gasket 33 passes through the limiting card plate 25, the elasticity of the first spring 28 will drive the second piston rod 26 to reset, so that the limiting card plate 25 can be located above the arc gasket 33 to prevent the second syringe 32 from moving upward. When the second syringe 32 moves downward to the limit position, the nipple on the second syringe 32 can be inserted into the interior of the first one-way valve 7. Subsequently, the drive The motor 15 is started, driving the screw rod 16 to rotate clockwise, so that the piston handle inside the first injection tube 8 can move toward the front end, so that the air inside the first injection tube 8 can be drawn out, and the flow direction inside the second one-way valve 10 is close to the end of the plastic insert 4, so that when the air is drawn out of the first injection tube 8, the second one-way valve 10 can prevent the air inside the plastic insert 4 from entering the first injection tube 8, and the first one-way valve 7 is interconnected with the first injection tube 8, and the flow direction of the first one-way valve 7 is close to the end of the first injection tube 8, so that when the air is drawn out of the first injection tube 8, the first injection tube 8 can absorb the liquid medicine inside the second syringe 32 into the first injection tube 8 through the first one-way valve 7, thereby completing the work of transferring the liquid medicine.Subsequently, when the liquid medicine in the second syringe 32 is completely transferred to the first syringe 8, the drive motor 15 can be started again to drive the screw 16 to rotate counterclockwise, so that the piston handle in the first syringe 8 can re-enter the first syringe 8, so that the liquid medicine can be pushed to the inside of the plastic cannula 4 for discharge, thereby achieving urethral flushing and liquid medicine feeding without having to plug and unplug the plastic cannula 4 a second time, and when the second syringe 32 is installed inside the support top frame 23, the connecting substrate 20 can be moved to the top of the support base 19, and the insertion rod 21 can be slidably inserted into the socket inside the top of the support base 19, so that the connecting substrate 20 and the support base 19 can be accurately connected. Docking installation, then, when the second syringe 32 needs to be disassembled, the touch panel 30 can be pressed downward to drive the first piston rod 24 to move toward the inside of the L-shaped cylinder 27, so that the second piston rod 26 drives the limiting card plate 25 to move outward, so that the bottom end of the limiting card plate 25 can be misaligned with the top end of the arc gasket 33, releasing the second syringe 32. At this time, the second syringe 32 can be pulled upward, so that the second syringe 32 can be separated from the first one-way valve 7. When in use, when the plastic cannula 4 is inserted into the urethra of a child, the plastic strip 3 can be brought into contact with the patient's body surface, and then the external tape is attached between the plastic strip 3 and the body surface, so that the plastic cannula 4 can be fixed inside the urethra of a child to complete the work.

[0045] Example 2

[0046] On the basis of Example 1, Figure 8 As shown, the support base 19 also includes a second spring 34, a limiting ring 35, an extension bracket 36 and a support front plate 37. The support front plate 37 is fixedly installed at the rear end bottom of the support base 19, and the extension bracket 36 is slidably connected to the two ends of the support front plate 37. The second spring 34 is fixedly installed between the extension bracket 36 and the support front plate 37. The limiting ring 35 is fixedly installed on the opposite end of the extension bracket 36. An extension round rod is fixedly installed at the center of the two ends of the support front plate 37, and the second spring 34 is located on the outer circle of the extension round rod.

[0047] When implementing this embodiment, when the alignment sleeve 9 and the first injection tube 8 need to be docked, the limiting ring 35 can be pulled outward until the distance between the two limiting rings 35 is larger than the diameter of the second one-way valve 10, so that the alignment sleeve 9 can be easily slidably sleeved on the nipple of the first injection tube 8. Subsequently, when the alignment sleeve 9 and the first injection tube 8 are connected and cooperated, the limiting ring 35 can be released, and the elasticity of the second spring 34 will drive the extension bracket 36 to move and reset, so that the limiting ring 35 can be slidably sleeved on the outer ring of the second one-way valve 10, thereby preventing the alignment sleeve 9 from falling off the first injection tube 8, completing the work of strengthening the positioning of the alignment sleeve 9, and by sliding the end of the extension bracket 36 away from the limiting ring 35 on the support rods at both ends of the support front plate 37, the limiting ring 35 can be supported to move in a straight line, thereby improving the docking accuracy of the limiting ring 35 and the second one-way valve 10, and completing the work.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A urethral drug delivery device for pediatric urology, comprising a support component (2), a flow guide device (1) is placed on the top of the support component (2), and a plastic strip (3) is fixedly mounted on the end of the flow guide device (1) away from the support component (2), characterized in that: The flow guiding device (1) comprises a plastic insert (4), a hose (5), a groove (6), a first one-way valve (7), a first injection tube (8), an alignment sleeve (9) and a second one-way valve (10); the plastic insert (4) is fixedly mounted on the rear end of the hose (5); the hose (5) is fixedly mounted on the rear end of the second one-way valve (10); the second one-way valve (10) is fixedly mounted on the rear end of the alignment sleeve (9); the alignment sleeve (9) is slidably sleeved on the rear end of the first injection tube (8); the groove (6) is symmetrically arranged on the top and bottom ends of the first injection tube (8); the first one-way valve (7) is fixedly mounted on the top end of the first injection tube (8) near the plastic insert (4); the supporting component (2) comprises a transmission device (11), an alignment device (12) and a docking device (13); the docking device (13) is slidably inserted into the top end of the alignment device (12); and the alignment device (12) is slidably inserted into the top end of the transmission device (11).

2. A urethral drug delivery device for pediatric urology according to claim 1, characterized in that: The transmission device (11) comprises a support base (14), a drive motor (15), a screw rod (16), a displacement support rod (17), a limiting sleeve (18) and a support base (19); the support base (19) is symmetrically fixedly mounted on the top rear end of the support base (14); the drive motor (15) is fixedly mounted inside the support base (14) close to the support base (19); the screw rod (16) is fixedly mounted at the front center of the drive motor (15); the displacement support rod (17) is threadedly sleeved on the outer ring of the screw rod (16); and the limiting sleeve (18) is fixedly mounted on the top end of the displacement support rod (17).

3. A urethral drug delivery device for pediatric urology according to claim 2, characterized in that: The alignment device (12) comprises a connecting substrate (20), an insert rod (21), a magnetic strip (22), a supporting top frame (23), a first piston rod (24), a limiting card plate (25), a second piston rod (26), an L-shaped air cylinder (27), a first spring (28), a supporting vertical frame (29), a touch panel (30) and a guiding vertical rod (31); the connecting substrate (20) is symmetrically fixedly mounted on the bottom end of the supporting top frame (23); the insert rod (21) is symmetrically fixedly mounted on the bottom end of the connecting substrate (20); the magnetic strip (22) is fixedly mounted between the two connecting substrates (20); the supporting vertical frame (29) is fixedly mounted on the top rear end of the supporting top frame (23); the L-shaped air cylinder (27) The second piston rod (26) is slidably inserted into the bottom end of the L-shaped gas cylinder (27), the limiting card plate (25) is fixedly installed at the end of the second piston rod (26) away from the L-shaped gas cylinder (27), the first piston rod (24) is slidably inserted into the top end of the L-shaped gas cylinder (27), the touch panel (30) is fixedly installed at the top end of the first piston rod (24), the first spring (28) is symmetrically fixedly installed between the touch panel (30) and the supporting frame (29), the guide vertical rod (31) symmetrically slides through the touch panel (30) and is installed at the top end of the supporting frame (29), and the guide vertical rod (31) is located at the inner circle of the first spring (28).

4. A urethral drug delivery device for pediatric urology according to claim 3, characterized in that: The docking device (13) comprises a second syringe (32) and an arc gasket (33), wherein the arc gasket (33) is fixedly mounted on the outer ring of the second syringe (32).

5. The urethral drug delivery device for pediatric urology according to claim 4, characterized in that: The plastic strip (3) is fixedly mounted on the front end surface of the plastic insert (4), the first injection tube (8) is placed on the top end of the support base (19), the insertion rod (21) is slidably inserted inside the top end of the support base (19), and the second syringe (32) is slidably inserted inside the rear end of the support top frame (23).

6. The urethral drug delivery device for pediatric urology according to claim 5, characterized in that: The surface of one end of the plastic insert (4) away from the hose (5) is arranged in an arc shape, and a liquid permeable hole is provided on the outer ring of the plastic insert (4), the groove (6) is in contact with the inner ring surfaces of the support base (19) and the connecting substrate (20) opposite to each other, and circular holes are symmetrically provided on the top of the support base (19).

7. A urethral drug delivery device for pediatric urology according to claim 6, characterized in that: The limiting sleeve (18) has a placement groove inside, the support base (14) has a sliding groove at the top center away from the support base (19), the inside of the L-shaped air cylinder (27) is hollow, and a closed cavity is formed between the second piston rod (26), the L-shaped air cylinder (27) and the first piston rod (24).

8. The urethral drug delivery device for pediatric urology according to claim 7, characterized in that: The top of the opposite side end of the limiting clamping plate (25) and the bottom outer ring of the arc gasket (33) are both inclined at 45 degrees, and a mounting hole is provided near the top center of the supporting vertical frame (29) on the supporting top frame (23).

9. The urethral drug delivery device for pediatric urology according to claim 8, characterized in that: The support base (19) further comprises a second spring (34), a limiting collar (35), an extension bracket (36) and a support front plate (37); the support front plate (37) is fixedly mounted on the rear end bottom of the support base (19); the extension bracket (36) is slidably sleeved on both ends of the support front plate (37); the second spring (34) is fixedly mounted between the extension bracket (36) and the support front plate (37); the limiting collar (35) is fixedly mounted on an opposite end of the extension bracket (36); an extension round rod is fixedly mounted at the center of both ends of the support front plate (37), and the second spring (34) is located on the outer ring of the extension round rod.

10. A method for using a urethral drug delivery device for pediatric urology, using the urethral drug delivery device for pediatric urology as claimed in any one of claims 1 to 8, characterized in that: It includes the following steps: S1. First, the first injection tube (8) and the second injection tube (32) are filled with disinfectant and liquid medicine respectively. Then, the first injection tube (8) is placed on the top of the support base (19) until the piston handle inside the first injection tube (8) is placed inside the limiting sleeve (18). Then, the plastic cannula (4) is inserted into the urethra of the child. Then, the driving motor (15) is started to drive the screw rod (16) to rotate, so that the limiting sleeve (18) can drive the piston to enter the first injection tube (8), so that the disinfectant inside the first injection tube (8) can enter the plastic cannula (4) through the hose (5), so that the plastic cannula (4) can flush the inside of the urethra. S2. After the urethra is flushed, the second syringe (32) can be inserted through the supporting top frame (23) and connected to the first one-way valve (7). The arc gasket (33) is limited and positioned by the limiting clamp (25) to prevent the second syringe (32) from falling, thereby completing the work of connecting the second syringe (32) and the first injection tube (8). S3. Finally, the driving motor (15) can be started to drive the screw rod (16) to rotate in the opposite direction, so that the limiting sleeve (18) moves to the front end, so that the piston inside the first injection tube (8) can move to the front end. By setting the second one-way valve (10), it can be prevented that the plastic cannula (4) absorbs air and flows into the interior of the first injection tube (8). Subsequently, when the piston rod moves to the rear end, the liquid medicine inside the second syringe (32) can be drawn into the interior of the first injection tube (8) through the first one-way valve (7). Subsequently, the driving motor (15) is started again to drive the screw rod (16) to rotate, so that the piston inside the first injection tube (8) moves to the rear end, so that the liquid medicine inside the first injection tube (8) can be discharged into the urethra through the plastic cannula (4).

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