Urethral stent tube capable of continuously flushing urethra

Abstract

The utility model discloses a urethral stent tube for continuous urethral irrigation, which comprises a urethral stent tube body, an air bag, an irrigation hole and an air tube are arranged on the urethral stent tube body, an inner cavity is arranged inside the urethral stent tube body, and the air tube is axially arranged along the urethral stent tube body and is connected with the air bag; a liquid inlet is formed in the urethral stent tube body, a liquid inlet hose is connected to the liquid inlet, a passage control part is arranged on the liquid inlet hose, and the passage control part can block an internal passage of the liquid inlet hose in a normal state and opens the internal passage of the liquid inlet hose only in a stress driving period. The utility model has the following advantages and effects: on the premise of meeting continuous urethral flushing, quick controllability and on-demand start and stop of urethral flushing are realized, waste and infection risks caused by continuous leakage of flushing fluid are effectively avoided, and the convenience and instant effect of flushing operation are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a urethral stent tube for continuous urethral flushing. Background Technology

[0002] Urethral stents are commonly used medical devices in urology, primarily for maintaining urethral patency, draining urine, or performing postoperative irrigation. Clinically, especially after urethral surgery or long-term indwelling catheterization, urethral irrigation is frequently necessary to prevent blockage by blood clots, secretions, or tissue debris, and to maintain local cleanliness. However, while existing urethral stents can provide continuous irrigation, they still have significant limitations in achieving rapid and reliable on-demand irrigation control, particularly in scenarios requiring brief, repeated pulsed irrigation or immediate irrigation. Examples include: immediate clearing of postoperative blockages by blood clots or tissue debris; intermittent cleaning of accumulated secretions in patients with long-term indwelling catheters; short-term administration of local urethral medications; auxiliary irrigation to maintain a clear field of vision during cystoscopy; and immediate maintenance of urethral patency after patient activity. These common clinical scenarios all require the irrigation process to be able to switch efficiently and conveniently between "reliable shutdown under normal conditions" and "immediately controllable opening": Reliable shutdown under normal conditions avoids continuous and uncontrolled outflow of irrigation fluid, reducing resource waste and lowering the risk of irritation and infection caused by prolonged exposure of the urethral mucosa to fluid flow; immediate controllable opening allows healthcare personnel to respond quickly as needed, supports pulsed irrigation to more effectively loosen and remove obstructions, and facilitates short-term drug infusion or local treatment, thereby improving irrigation effectiveness and treatment specificity while reducing the workload of healthcare personnel. Therefore, current technologies lack an integrated irrigation control structure that can reliably shut down under normal conditions, provide immediate controllable opening, and support continuous irrigation while meeting the comprehensive clinical needs for immediacy, fluid conservation, and ease of operation. Utility Model Content

[0003] The purpose of this invention is to provide a urethral stent tube for continuous urethral flushing to solve the problems mentioned in the background art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A urethral stent tube for continuous urethral flushing includes a urethral stent tube body with a tubular shell structure, an air balloon at the front end of the urethral stent tube body, a hollow inner cavity inside the urethral stent tube body, and a plurality of flushing openings communicating with the inner cavity regularly formed on the outer peripheral wall.

[0006] A trachea is fixedly installed at the rear end of the urethral stent tube body. The trachea is an independent closed tube that penetrates into the inner lumen. The trachea is arranged along the axial direction of the urethral stent tube body and is connected to the balloon.

[0007] The outer wall of the urethral stent tube body is provided with a liquid inlet, and a liquid inlet tube is connected to the liquid inlet. A passage control component is provided on the liquid inlet tube, which is used to block or open the internal passage of the liquid inlet tube.

[0008] The passage control component normally blocks the internal passage of the inlet hose and only opens the internal passage of the inlet hose when a force is applied.

[0009] By adopting the above technical solution, and by setting up an independent closed trachea and an inlet tubing with access control components, not only is continuous urethral flushing of the urethral stent tube achieved, but also reliable closure under normal conditions and on-demand opening control of the flushing is realized. This not only effectively avoids continuous uncontrolled outflow of flushing fluid, reduces fluid waste, and lowers the risk of irritation and infection caused by long-term flushing impact on the urethral mucosa, but also allows medical staff to quickly and temporarily open the flushing access when needed, supports pulsed flushing to loosen obstructions, improves flushing efficiency and treatment targeting, and simplifies the operation process.

[0010] A further configuration is as follows: the passage control component includes a main housing, the surface of which has a liquid inlet and a liquid outlet that are separate from each other, and a liquid guiding cavity that communicates with the liquid inlet and the liquid outlet is formed inside the main housing. A sealing spindle is movably disposed in the liquid guiding cavity. Under normal conditions, the sealing spindle will block the passage between the liquid inlet and the liquid outlet. When the sealing spindle is driven to move, it will connect the passage between the liquid inlet and the liquid outlet.

[0011] By adopting the above technical solution, the mechanical and reliable blocking and opening of the passage between the liquid inlet and the liquid outlet is realized; the sealing spindle isolates the passage under normal conditions and connects the passage when driven. The structure is simple and the action is clear, which facilitates rapid response and stable control, and ensures the safety and repeatability of the flushing process.

[0012] A further configuration is as follows: the liquid guiding cavity is composed of a connected upper cavity and a lower cavity, the upper cavity and the lower cavity being connected to the liquid guiding outlet and the liquid guiding inlet, respectively; the cross-sectional width of the upper cavity is smaller than that of the lower cavity, so that a limiting step surface is formed at the connection between the upper cavity and the lower cavity;

[0013] The sealing spindle consists of a drive shaft, a connecting shaft, and a sealing shaft connected in sequence. The cross-sectional width of the drive shaft matches the upper cavity. The cross-sectional width of the connecting shaft is smaller than that of the upper cavity, so that an annular flow channel is formed between the connecting shaft and the inner wall of the upper cavity. The sealing shaft is located in the lower cavity, and the cross-sectional width of the sealing shaft is larger than that of the upper cavity. The sealing shaft abuts against the limiting step surface to block the passage between the liquid inlet and the liquid outlet.

[0014] By adopting the above technical solution, not only is reliable sealing and blocking achieved, but the liquid flow path is also optimized through the annular flow channel between the connecting shaft and the upper cavity, allowing the flushing fluid to pass through smoothly and improving the uniformity and efficiency of flushing.

[0015] A further feature is that the liquid inlet is located on the side of the main housing, and the bottom of the main housing is detachably provided with a sealing plug to seal the bottom of the lower section cavity.

[0016] By adopting the above technical solution, the setting of the sealing plug not only facilitates the installation of the sealing spindle, but also facilitates the subsequent installation and replacement of the spring components, thereby extending the service life.

[0017] A further feature is that a spring is provided in the lower cavity, and the two ends of the spring are respectively squeezed by a sealing shaft and a sealing plug.

[0018] By adopting the above technical solution, the pre-tightened or compressed state of the spring component provides a continuous restoring force to the sealing spindle, ensuring that the passage between the liquid inlet and the liquid outlet can be automatically and reliably closed when no external force is applied, thus enhancing the safety and convenience of use.

[0019] A further feature is that the top of the drive shaft extends out of the main housing;

[0020] The access control component also includes a drive seat fixed to the top of the main housing. A rotating shaft is hinged inside the drive seat. A turntable that rotates synchronously with the rotating shaft is fixedly mounted on the rotating shaft. A protruding mouth is fixedly extended from the turntable. As the rotating shaft rotates, the protruding mouth can contact the drive shaft and press down on the drive shaft. A handle fixed to the rotating shaft is fixedly mounted on the outer wall of the drive seat.

[0021] By adopting the above technical solution, the flushing passage can be opened by easily rotating the handle to press down the drive shaft. It has the advantage of being labor-saving and is suitable for frequent and rapid flushing operations in clinical settings, thereby improving work efficiency.

[0022] A further feature is that the urethral stent tube body consists of a tube body and a front end head located at the front end of the tube body. The front end head has a perforation through which an air supply tube passes. Several flushing protrusions are also fixedly installed on the front end head, and each flushing protrusion has a flushing inner hole that communicates with the inner cavity.

[0023] By adopting the above technical solution, the flushing solution can be guided more precisely and deeply into the urethra, enhancing the local flushing effect. It is especially suitable for removing deep secretions or blood clots, improving the thoroughness of cleaning and treatment.

[0024] A further feature is that the inner wall of the front end head is regularly provided with several fixing plates that are fixed to the outer wall of the trachea, and the fixing plates are spaced apart from each other.

[0025] By adopting the above technical solution, the air tube can be effectively fixed by the fixing plate, and the interval between the fixing plates can ensure the smooth flow of the flushing fluid.

[0026] In summary, this utility model has the following beneficial effects: while meeting the requirement of continuous urethral irrigation, it achieves rapid and controllable urethral irrigation and on-demand start and stop, which not only effectively avoids the waste and infection risk caused by continuous leakage of irrigation fluid, but also significantly improves the convenience and immediate effect of irrigation operation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0028] Figure 2 This is a schematic diagram of the internal structure of the access control component in the embodiment (the drive base is hidden).

[0029] Figure 3 This is a schematic diagram of the front end head in the embodiment.

[0030] In the diagram: 11. Urethral stent tube body; 111. Tube body; 112. Front end head; 12. Airbag; 13. Fluid flushing opening; 14. Trachea; 21. Inlet hose; 31. Main housing; 32. Fluid inlet; 33. Fluid outlet; 41. Upper cavity; 411. Annular flow channel; 42. Lower cavity; 43. Limiting step surface; 5. Sealing spindle; 51. Drive shaft; 52. Connecting shaft; 53. Sealing shaft; 61. Sealing plug; 71. Spring component; 81. Drive seat; 82. Turntable; 83. Protruding nozzle; 84. Handle; 91. Fluid flushing protrusion; 92. Fixing plate. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figures 1-3 As shown;

[0033] This embodiment discloses a urethral stent tube for continuous urethral flushing, which consists of a urethral stent tube body 11, an air balloon 12, an air tube 14, an inlet tubing 21, and a passage control component.

[0034] The urethral stent tube body 11 has a tubular shell structure with a hollow inner cavity opened along the axial direction. Several flushing openings 13 are regularly spaced on the outer peripheral wall of the urethral stent tube body 11, communicating with the inner cavity to allow flushing fluid to be discharged into the urethra. An air bladder 12 is provided at the front end of the urethral stent tube body 11. The air bladder 12 expands after inflation, used to fix the front end of the urethral stent tube body 11 in a corresponding position within the urethra.

[0035] A trachea 14 is fixedly installed at the rear end of the urethral stent tube body 11. The trachea 14 is an independent closed tube 111 that penetrates into the inner lumen. The trachea 14 is arranged along the axial direction of the urethral stent tube body 11 and is connected to the balloon 12. The front end of the trachea 14 is connected to the balloon 12 and is used to inflate or depress the balloon 12 to control the expansion and contraction of the balloon 12.

[0036] A fluid inlet is provided on the outer wall of the urethral stent tube body 11, and a fluid inlet tube 21 is connected to the fluid inlet. A passage control component is provided on the fluid inlet tube 21. The passage control component blocks or opens the internal passage of the fluid inlet tube 21 to control the flow of flushing fluid. Under normal conditions (i.e., when not driven by force), the passage control component blocks the internal passage of the fluid inlet tube 21; only during periods of force application does it temporarily open the internal passage of the fluid inlet tube 21 to allow flushing fluid (such as physiological saline) to pass through.

[0037] Specifically, the passage control component includes a main housing 31, on the surface of which are provided a liquid inlet 32 ​​and a liquid outlet 33 that are separate from each other. Inside the main housing 31, there is a liquid guiding cavity that communicates with the liquid inlet 32 ​​and the liquid outlet 33. A sealing spindle 5 is movably arranged in the liquid guiding cavity. Under normal conditions, the sealing spindle 5 will block the passage between the liquid inlet 32 ​​and the liquid outlet 33. After the sealing spindle 5 is driven to move, it will connect the passage between the liquid inlet 32 ​​and the liquid outlet 33.

[0038] More specifically, the liquid guiding cavity is composed of an upper cavity 41 and a lower cavity 42 that are connected to each other. The upper cavity 41 and the lower cavity 42 are connected to the liquid guiding outlet 33 and the liquid guiding inlet 32, respectively. The cross-sectional width of the upper cavity 41 is smaller than that of the lower cavity 42, so that an annular limiting step surface 43 is formed at the connection between the upper cavity 41 and the lower cavity 42.

[0039] The sealing spindle 5 consists of a drive shaft 51, a connecting shaft 52, and a sealing shaft 53 connected in sequence. The cross-sectional width of the drive shaft 51 matches that of the upper cavity 41. The cross-sectional width of the connecting shaft 52 is smaller than that of the upper cavity 41, so that an annular flow channel 411 is formed between the connecting shaft 52 and the inner wall of the upper cavity 41. The sealing shaft 53 is located in the lower cavity 42, and the cross-sectional width of the sealing shaft 53 is larger than that of the upper cavity 41. The passage between the liquid inlet 32 ​​and the liquid outlet 33 is blocked by the sealing shaft 53 abutting against the limiting step surface 43.

[0040] Furthermore, the liquid inlet 32 ​​is located on the side of the main housing 31, and the liquid outlet 33 is also located on the side of the main housing 31; a sealing plug 61 is detachably provided at the bottom of the main housing 31 to seal the bottom of the lower cavity 42, and the sealing plug 61 is threadedly connected to the bottom of the main housing 31.

[0041] A spring 71 is installed in the lower cavity 42, with its two ends compressed by the sealing shaft 53 and the sealing plug 61, respectively. Under normal conditions, the spring 71 is in a compressed or pre-tightened state, and its elastic force acts upward on the sealing shaft 53, which helps to maintain a tight contact between the sealing shaft 53 and the limiting step surface 43, ensuring a reliable blocking state. When an external force drives the driving shaft 51 to move downward, the spring 71 is further compressed. After the external force is removed, the restoring force of the spring 71 can push the sealing main shaft 5 to reset, re-blocking the passage between the liquid inlet 32 ​​and the liquid outlet 33.

[0042] Furthermore, the top of the drive shaft 51 extends out of the main housing 31; the passage control component also includes a drive seat 81 fixed to the top of the main housing 31. A rotating shaft is hinged inside the drive seat 81, and a turntable 82 that rotates synchronously with the rotating shaft is fixedly mounted on the rotating shaft. A protrusion 83 extends from the turntable 82. As the rotating shaft rotates, the protrusion 83 can contact the drive shaft 51 and press down on the drive shaft 51, so that the sealing shaft 53 separates from the limiting step surface 43, allowing the flushing fluid to smoothly enter the upper cavity 41 and then flow out from the liquid outlet 33. A handle 84 fixed to the rotating shaft is fixedly mounted on the outer wall of the drive seat 81.

[0043] Furthermore, the urethral stent tube body 11 consists of a tube body 111 and a front end head 112 located at the front end of the tube body 111. The front end head 112 has a perforation through which the air supply tube 14 passes. Several flushing protrusions 91 are also fixedly installed on the front end head 112, and each flushing protrusion 91 has a flushing inner hole that communicates with the inner cavity. In this way, the deep urethra can be effectively cleaned through the flushing inner hole.

[0044] The inner wall of the front end 112 is regularly provided with a number of fixing pieces 92 that are fixed to the outer wall of the trachea 14. The fixing pieces 92 stably position the trachea 14 in the inner cavity of the urethral stent tube body 11. The fixing pieces 92 are spaced apart to ensure that the flushing fluid can pass through smoothly and flow out from the flushing opening 13.

[0045] The working principle of this embodiment is as follows:

[0046] First, the urethral stent tube body 11 is placed in position, and the balloon 12 is inflated through the trachea 14 to expand and fix the urethral stent tube body 11. When flushing is required, the operator rotates the handle 84. The rotation of the handle 84 drives the internal rotating shaft and the turntable 82 fixed on the rotating shaft to rotate together. The protrusion 83 on the turntable 82 rotates accordingly. When it contacts the drive shaft 51 extending from the top of the main housing 31, it presses it down.

[0047] The drive shaft 51 presses down, causing the sealing main shaft 5 to move downwards as a whole, so that the sealing shaft 53 overcomes the elastic force of the spring member 71 and leaves the limiting step surface 43 in the liquid guiding cavity; at this time, the passage between the liquid guiding inlet 32 ​​and the liquid guiding outlet 33 is opened. The flushing fluid flows in from the liquid inlet hose 21, enters the lower section cavity 42 through the liquid guiding inlet 32, bypasses the sealing shaft 53, and enters the upper section cavity 41 through the annular flow channel 411 formed by the connecting shaft 52 and the inner wall of the upper section cavity 41, and finally flows out from the liquid guiding outlet 33.

[0048] The outflowing flushing fluid enters the inner cavity of the urethral stent tube body 11 through the inlet of the inlet tube 21; part of the flushing fluid flows directly out from the flushing opening 13 on the tube wall, while the other part flows to the front end 112 and flows out from the flushing inner hole of each flushing protrusion 91 to flush the urethra.

[0049] In addition, by pressing on the handle 84, continuous flushing of the urethra can be achieved, satisfying the conventional urethral flushing method.

[0050] When rinsing is complete, the operator simply releases their grip, and the sealing spindle 5 is pushed upwards by the automatic reset force of the spring 71. The sealing shaft 53 re-engages with the limiting step surface 43, completely blocking the passage again, and the rinsing fluid immediately stops flowing. At the same time, the reset of the sealing spindle 5 causes the drive shaft 51 to rise, disengaging the nozzle 83 from the drive shaft 51, and the handle 84 returns to its initial position.

[0051] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A urethral stent tube for continuous urethral flushing, comprising a urethral stent tube body (11) with a tubular shell structure, wherein an air balloon (12) is provided at the front end of the urethral stent tube body (11), and the urethral stent tube body (11) has a hollow inner cavity and a plurality of flushing openings (13) communicating with the inner cavity are regularly formed on the outer peripheral wall; characterized in that: A trachea (14) is fixedly provided at the rear end of the urethral stent tube body (11). The trachea (14) is an independent closed tube (111) that penetrates into the inner lumen. The trachea (14) is arranged along the axial direction of the urethral stent tube body (11) and is connected to the airbag (12). The outer wall of the urethral stent tube body (11) is provided with an inlet, and an inlet hose (21) is connected to the inlet. A passage control component is provided on the inlet hose (21) to block or open the internal passage of the inlet hose (21); and The passage control component normally blocks the internal passage of the inlet hose (21) and only opens the internal passage of the inlet hose (21) when driven by force.

2. The urethral stent tube for continuous urethral irrigation according to claim 1, characterized in that: The passage control component includes a main housing (31), on the surface of which are provided a liquid inlet (32) and a liquid outlet (33) that are separate from each other. Inside the main housing (31) is a liquid-guiding cavity that communicates with the liquid inlet (32) and the liquid outlet (33). A sealing spindle (5) is movably arranged in the liquid-guiding cavity. Under normal conditions, the sealing spindle (5) will block the passage between the liquid inlet (32) and the liquid outlet (33). When the sealing spindle (5) is driven to move, it will connect the passage between the liquid inlet (32) and the liquid outlet (33).

3. The urethral stent tube for continuous urethral irrigation according to claim 2, characterized in that: The liquid guiding cavity is composed of an upper cavity (41) and a lower cavity (42) that are connected to each other. The upper cavity (41) and the lower cavity (42) are connected to the liquid guiding outlet (33) and the liquid guiding inlet (32) respectively. The cross-sectional width of the upper cavity (41) is smaller than that of the lower cavity (42), so that a limiting step surface (43) is formed at the connection between the upper cavity (41) and the lower cavity (42). The sealing spindle (5) is composed of a drive shaft (51), a connecting shaft (52) and a sealing shaft (53) connected in sequence. The cross-sectional width of the drive shaft (51) matches that of the upper cavity (41). The cross-sectional width of the connecting shaft (52) is smaller than that of the upper cavity (41), so that an annular flow channel (411) is formed between the connecting shaft (52) and the inner wall of the upper cavity (41). The sealing shaft (53) is located in the lower cavity (42), and the cross-sectional width of the sealing shaft (53) is larger than that of the upper cavity (41). The passage between the liquid inlet (32) and the liquid outlet (33) is blocked by the sealing shaft (53) abutting against the limiting step surface (43).

4. The urethral stent tube for continuous urethral irrigation according to claim 3, characterized in that: The liquid inlet (32) is located on the side of the main housing (31), and the bottom of the main housing (31) is detachably provided with a sealing plug (61) to seal the bottom of the lower cavity (42).

5. A urethral stent tube for continuous urethral irrigation according to claim 4, characterized in that: A spring (71) is provided in the lower cavity (42), and the two ends of the spring (71) are squeezed by a sealing shaft (53) and a sealing plug (61) respectively.

6. A urethral stent tube for continuous urethral irrigation according to claim 3, characterized in that: The top of the drive shaft (51) extends out of the main housing (31); The passage control component also includes a drive seat (81) fixed to the top of the main housing (31). A rotating shaft is hinged inside the drive seat (81). A turntable (82) that rotates synchronously with the rotating shaft is fixedly mounted on the rotating shaft. A protruding mouth (83) is fixedly extended from the turntable (82). As the rotating shaft rotates, the protruding mouth (83) can contact the drive shaft body (51) and press down the drive shaft body (51). A handle (84) that is fixed to the rotating shaft is fixedly mounted on the outer wall of the drive seat (81).

7. A urethral stent tube for continuous urethral irrigation according to claim 1, characterized in that: The urethral stent tube body (11) consists of a tube body (111) and a front end head (112) located at the front end of the tube body (111). The front end head (112) has a perforation through which an air supply tube (14) passes. Several flushing protrusions (91) are also fixedly provided on the front end head (112). Each flushing protrusion (91) has a flushing inner hole that communicates with the inner cavity.

8. A urethral stent tube for continuous urethral irrigation according to claim 7, characterized in that: The inner wall of the front end head (112) is regularly provided with a number of fixing pieces (92) that are fixed to the outer wall of the trachea (14), and the fixing pieces (92) are spaced apart from each other.

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