Urethral diversion device for medical care

Abstract

The utility model relates to the technical field of diversion devices, and discloses a urethra diversion device for medical care, which comprises a urethral catheter. The anti-blocking unit comprises a floating air bag installed in the catheter, the floating air bag is arranged in a circular ring shape, a plurality of sets of protruding sections are arranged on the inner wall of the floating air bag, an air cavity is formed between the catheter and the floating air bag, and when the floating air bag is controlled to expand, the laminar flow state of urine in the catheter is destroyed, so that the anti-blocking effect is achieved. Impurities are difficult to attach to the inner wall of the catheter. The annular floating air bag is matched with the multiple sets of protruding sections on the inner wall, when the protruding sections stretch out along with expansion of the air bag, the laminar flow state of urine can be destroyed, friction force between the urine and the catheter wall is increased, impurities are promoted to be discharged along with the urine, the blocking risk is remarkably reduced, the service life of the catheter is prolonged, and pain of a patient caused by frequent replacement is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drainage device technology, and more specifically, it relates to a urethral drainage device for medical care. Background Technology

[0002] Urethral drainage devices are core instruments used in clinical medicine to drain urine from patients with urinary retention, urinary incontinence, or postoperative difficulty in urination. They are widely used in neurosurgery, urology, geriatrics, and other fields. However, existing urethral drainage devices still have some problems in long-term clinical use, which seriously affect the safety and comfort of patients and increase the nursing burden on medical staff.

[0003] Most existing urinary catheters have a smooth inner wall, allowing urine to flow in a laminar flow state during catheterization. Impurities such as uric acid crystals and cell debris in the urine easily deposit along the catheter wall, leading to catheter blockage over time. Once blockage occurs, the catheter must be replaced immediately. Frequent replacements not only increase the patient's financial burden but also cause pain, bleeding, and even urinary tract infections due to repeated insertion and removal of the catheter, which is particularly distressing for patients who are bedridden for extended periods or have poor physical tolerance. Utility Model Content

[0004] This invention provides a urethral drainage device for medical care, which solves the technical problem that existing urinary catheters have smooth inner walls, and the urine flows in a laminar state during the drainage process. Impurities such as uric acid crystals and cell debris in the urine are easily deposited along the tube wall, which can easily cause catheter blockage after long-term accumulation.

[0005] This utility model provides a urethral drainage device for medical care, including a urinary catheter and an anti-blocking unit. The anti-blocking unit includes a floating balloon installed inside the urinary catheter, and the floating balloon is arranged in a circular shape. The inner wall of the floating balloon is provided with multiple sets of protrusions. An air cavity is formed between the urinary catheter and the floating balloon. When the floating balloon is controlled to expand, it disrupts the laminar flow state of urine in the urinary catheter, making it difficult for impurities to adhere to the inner wall of the urinary catheter.

[0006] As a further optimization of this utility model, a pleated section is provided at the connection between the floating airbag and the protruding section.

[0007] As a further optimization of this utility model, an air injection tube is installed on the urinary catheter, and the air injection tube is connected to the inside of the air chamber. A compression balloon is installed at the end of the air injection tube away from the urinary catheter, and the compression balloon is provided with an intermittent expansion structure.

[0008] As a further optimization of this utility model, the intermittent expansion structure includes a connecting frame installed on the press airbag, and a press plate is provided inside the connecting frame. A connecting shaft is rotatably connected inside the connecting frame through a bearing, and a cam is installed on the connecting shaft. When the cam rotates, it reciprocates to squeeze the press plate, so that the press airbag is in a continuous inflation and deflation state, causing the floating airbag to form intermittent expansion.

[0009] As a further optimization of this utility model, guide grooves are provided on both sides of the inside of the connecting frame, and guide rods are slidably connected in the guide grooves, and the guide rods are fixedly connected to the pressing plate.

[0010] As a further optimization of this utility model, a spring is installed between the guide groove and the guide rod.

[0011] As a further optimization of this utility model, the catheter is also provided with a drug injection unit, which includes a drug cavity annularly opened on the inner wall of the catheter and multiple drug outlets opened on the outer surface of the catheter. The drug cavity and the drug outlets are connected internally. The catheter is also equipped with a drug injection tube, which is connected internally to the drug cavity.

[0012] As a further optimization of this utility model, a one-way diaphragm is installed inside the drug outlet, and the one-way diaphragm facilitates the discharge of the internal drug outward.

[0013] As a further optimization of this utility model, the catheter has multiple sets of spiral grooves, and the multiple sets of drug outlets are all located on the spiral path of the spiral grooves.

[0014] The beneficial effects of this invention are as follows: By using a circular floating airbag in conjunction with multiple sets of protruding segments on the inner wall, the protruding segments extend as the airbag expands, disrupting the laminar flow of urine, increasing the friction between the urine and the catheter wall, and promoting the expulsion of impurities with the urine. This significantly reduces the risk of blockage, extends the lifespan of the catheter, and reduces patient discomfort caused by frequent changes. Simultaneously, the extended protruding segments can make slight contact with the inner wall of the urethra, achieving gentle fixation of the catheter through friction, preventing displacement and dislodgement during patient movement.

[0015] In addition, the pleated section at the connection between the floating airbag and the raised section is a flexible structure that can undergo circumferential extension deformation as the airbag expands. This allows for radial displacement of the raised section while providing a restoring elastic force, avoiding the risk of rigid structure rupture and ensuring the reliability of long-term cyclic use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2This is a cross-sectional three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 This is the utility model Figure 2 Schematic diagram of partial cross-section of three-dimensional structure Figure 1 ;

[0019] Figure 4 This is the utility model Figure 2 Schematic diagram of partial cross-section of three-dimensional structure Figure 2 ;

[0020] Figure 5 This is the utility model Figure 4 Enlarged view of the structure at point A in the middle;

[0021] Figure 6 This is a cross-sectional view of the intermittent expansion structure of this utility model.

[0022] Figure 7 This is a partial three-dimensional structural diagram of the intermittent expansion structure of this utility model.

[0023] In the diagram: 1. Catheter; 2. Anti-blockage unit; 21. Floating balloon; 22. Protruding section; 23. Pleated section; 24. Inflation tube; 25. Compression balloon; 26. Connecting frame; 27. Compression plate; 271. Guide rod; 272. Spring; 28. Connecting shaft; 29. ​​Cam; 3. Medication injection unit; 31. Medication chamber; 32. Medication injection tube; 33. One-way diaphragm; 4. Spiral groove. Detailed Implementation

[0024] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0025] According to the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, a urethral drainage device for medical care includes a urinary catheter 1; the urinary catheter 1 is provided with an anti-blocking unit 2 inside, the anti-blocking unit 2 includes a floating airbag 21 installed inside the urinary catheter 1, and the floating airbag 21 is arranged in a ring shape. The inner wall of the floating airbag 21 is provided with multiple sets of protrusions 22, and an air cavity is formed between the urinary catheter 1 and the floating airbag 21. An air injection tube 24 is installed on the urinary catheter 1, and the air injection tube 24 is connected to the inside of the air cavity. A compression airbag 25 is installed at the end of the air injection tube 24 away from the urinary catheter 1.

[0026] During operation, pressing the external compression airbag 25 injects gas into the air chamber through the inflation tube 24, and the gas pressure drives the floating airbag 21 to expand radially. At this time, the protruding section 22 on the inner wall of the floating airbag 21 extends as the airbag expands, forming a non-smooth surface with the inner wall of the catheter 1; conversely, when the compression airbag 25 is released, the air chamber pressure decreases, and the floating airbag 21 contracts under the elastic restoring force of the pleated section 23, while the protruding section 22 simultaneously retracts to its initial state.

[0027] It should be noted that, according to the appendix Figure 4 and attached Figure 5 As shown, a pleated section 23 is provided at the connection between the floating airbag 21 and the protruding section 22. The pleated section 23 serves as a flexible connection structure, undergoing circumferential extension deformation when the floating airbag 21 expands, allowing radial displacement of the protruding section 22 while providing a restoring elastic force. When the protruding section 22 extends, its irregular surface disrupts the laminar flow of urine, making it difficult for impurities such as uric acid crystals and cell debris to adhere to the tube wall. The elastic deformation capability of the pleated section 23 avoids the risk of rupture of the floating airbag 21 that might occur with a rigid structure, ensuring reliability for long-term cyclic use.

[0028] Specifically, when impurities in urine flow within catheter 1, they tend to deposit on the catheter wall, gradually causing blockage. The anti-blockage unit 2, through multiple sets of protruding sections 22, disrupts the laminar flow of urine when extended, making it difficult for impurities to adhere to the inner wall of catheter 1. The protruding sections 22 increase the friction between urine and the catheter wall, promoting the expulsion of impurities with the urine flow, significantly reducing the risk of catheter 1 blockage, extending the service life of catheter 1, and reducing the pain and financial burden on patients caused by frequent catheter 1 replacements.

[0029] In addition, for patients with high activity levels or weak urethral sphincter function, catheter 1 is prone to displacement or dislodgement. When the multiple sets of protruding segments 22 extend, they can make slight contact with the inner wall of the urethra, increasing the friction between catheter 1 and the urethra and providing a certain degree of fixation. This fixation method is relatively gentle and will not cause damage to the urethra, while effectively preventing accidental displacement of catheter 1 during patient activity and ensuring smooth urine drainage.

[0030] In other embodiments, according to the appendix Figure 3 Appendix Figure 6 and attached Figure 7As shown, the airbag 25 is equipped with an intermittent inflation structure. The intermittent inflation structure includes a connecting frame 26 installed on the airbag 25, and a pressing plate 27 is provided inside the connecting frame 26. A connecting shaft 28 is rotatably connected inside the connecting frame 26 via a bearing, and a cam 29 is installed on the connecting shaft 28. When the cam 29 rotates, it reciprocates to compress the pressing plate 27, so that the airbag 25 is in a continuous inflation and deflation state, causing the floating airbag 21 to form intermittent inflation.

[0031] The connecting shaft 28 is positioned away from the center of the cam 29. When the connecting shaft 28 rotates, it drives the cam 29 to rotate eccentrically.

[0032] It should be noted that guide grooves are provided on both sides of the inner side of the connecting frame 26, and guide rods 271 are slidably connected in the guide grooves. The guide rods 271 are fixedly connected to the pressing plate 27. A spring 272 is installed between the guide grooves and the guide rods 271.

[0033] During operation, the connecting shaft 28 is manually rotated or connected to an external power source, such as a micro drive motor, to drive the connecting shaft 28 to rotate, thereby driving the cam 29 to rotate eccentrically. When the cam 29 rotates eccentrically, it contacts the pressing plate 27 during the rotation process, pressing the pressing plate 27.

[0034] Specifically, when the protruding end of the cam 29 rotates to contact the pressing plate 27, it generates a squeezing force on the pressing plate 27 along the axial direction of the guide groove. Under the action of this force, the pressing plate 27 drives the guide rods 271 on both sides to slide along the guide groove of the connecting frame 26 towards the pressing airbag 25. The squeezing action of the pressing plate 27 reduces the internal volume of the pressing airbag 25 and increases the pressure. The gas in the airbag is forced into the air cavity between the catheter 1 and the floating airbag 21 through the inflation tube 24. The pressure in the air cavity rises and drives the floating airbag 21 to expand radially. The protruding section 22 on its inner wall extends out with the expansion, forming a non-smooth surface with the inner wall of the catheter 1, thereby achieving turbulence and anti-blockage.

[0035] As the raised end of cam 29 continues to rotate and disengages from the pressing plate 27, the flat end of cam 29 contacts the pressing plate 27, at which point the squeezing force of cam 29 on the pressing plate 27 disappears. Spring 272 releases its stored elastic potential energy, pushing the pressing plate 27 and guide rod 271 to reset along the guide groove away from the pressing airbag 25. The pressing airbag 25 is no longer squeezed, its internal volume recovers, and the pressure decreases. The gas in the air chamber flows back to the pressing airbag 25 through the air injection tube 24, reducing the air chamber pressure. The floating airbag 21 contracts under the elastic restoring force of the pleated section 23, and the raised section 22 simultaneously retracts to its initial state.

[0036] As the connecting shaft 28 continues to rotate, the cam 29 repeatedly performs periodic reciprocating motions, causing the airbag 25 to continuously inflate and deflate, ultimately driving the floating airbag 21 to form an intermittent cycle of expansion and contraction. This effectively avoids the deposition and blockage of impurities caused by human negligence, while also reducing the workload of medical staff.

[0037] According to the appendix Figure 3 and attached Figure 4 As shown, the catheter 1 is also provided with a drug injection unit 3. The drug injection unit 3 includes a drug cavity 31 that is annularly opened on the inner wall of the catheter 1 and multiple drug outlets opened on the outer surface of the catheter 1. The inside of the drug cavity 31 and the drug outlets are connected. The catheter 1 is also equipped with a drug injection tube 32, and the drug injection tube 32 is connected to the inside of the drug cavity 31.

[0038] Furthermore, a one-way diaphragm 33 is installed inside the drug outlet, and the one-way diaphragm 33 facilitates the discharge of the internal drug outward.

[0039] Specifically, the annular cavity 31 on the inner wall of the catheter 1 can be used to administer anesthetic drugs. When the catheter 1 needs to be removed, the anesthetic drug is injected into the cavity 31 through a syringe connected to the injection tube 32. The injection unit 3, through the coordinated design of the annular cavity 31 and multiple drug outlets, achieves circumferential and uniform anesthesia of the urethral mucosa. After the anesthetic drug is injected into the cavity 31 through the injection tube 32, it can penetrate into the submucosal tissue of the urethra through the drug outlets distributed around the periphery of the catheter 1, specifically blocking the pudendal nerve branches and sensory nerve endings in the urethral wall, achieving a local anesthetic effect, thereby reducing the pain when removing the catheter 1.

[0040] According to the appendix Figure 1 As shown, the catheter 1 has multiple sets of spiral grooves 4, and the multiple drug outlets are all located on the spiral path of the spiral grooves 4.

[0041] When medication is needed for local urethral conditions such as urethral mucosal inflammation or postoperative wounds, medical staff inject the medication into the drug delivery channel inside catheter 1. Under the pressure of the drug delivery channel, the medication flows to multiple pre-set dispensing ports. Because the openings of the dispensing ports are all located on the spiral path of spiral groove 4, the medication does not directly diffuse into the urethral lumen. Instead, it precisely enters the arc-shaped channel of spiral groove 4 through the dispensing ports for rapid and uniform diffusion, avoiding disorderly loss of the medication in the initial stage.

[0042] As the medication continues to diffuse along the spiral path of the spiral groove 4, it gradually penetrates from within the groove to the surface of the urethral mucosa. Because the spiral groove 4 extends continuously along the axial direction of the catheter 1, and multiple sets of spiral grooves 4 are evenly distributed circumferentially, the medication will eventually form a drug film on the surface of the urethral mucosa. At the same time, the dynamic diffusion process of the spiral path avoids the concentrated accumulation of medication in a certain local area, ensuring that all parts of the urethral mucosa can be exposed to an effective drug concentration.

[0043] The embodiments of this specific implementation have been described above, but this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. A urethral drainage device for medical care, characterized in that, include: Urinary catheter (1); The anti-blocking unit (2) includes a floating airbag (21) installed inside the catheter (1), and the floating airbag (21) is arranged in a ring shape. The inner wall of the floating airbag (21) is provided with multiple sets of protruding sections (22). An air cavity is formed between the catheter (1) and the floating airbag (21). When the floating airbag (21) is controlled to expand, it disrupts the laminar flow state of urine in the catheter (1), making it difficult for impurities to adhere to the inner wall of the catheter (1).

2. The urethral drainage device for medical care according to claim 1, characterized in that, A pleated section (23) is provided at the connection between the floating airbag (21) and the protruding section (22).

3. The urethral drainage device for medical care according to claim 1, characterized in that, An air inlet tube (24) is installed on the urinary catheter (1), and the air inlet tube (24) is connected to the inside of the air chamber. A compression balloon (25) is installed at the end of the air inlet tube (24) away from the urinary catheter (1), and the compression balloon (25) is provided with an intermittent expansion structure.

4. A urethral drainage device for medical care according to claim 3, characterized in that, The intermittent expansion structure includes a connecting frame (26) installed on the press airbag (25), and a press plate (27) is provided inside the connecting frame (26). A connecting shaft (28) is rotatably connected inside the connecting frame (26) via a bearing, and a cam (29) is installed on the connecting shaft (28). When the cam (29) rotates, it reciprocates to squeeze the press plate (27), so that the press airbag (25) is in a continuous inflation and deflation state, so that the floating airbag (21) forms an intermittent expansion.

5. A urethral drainage device for medical care according to claim 4, characterized in that, The connecting frame (26) has guide grooves on both sides inside, and a guide rod (271) is slidably connected in the guide groove. The guide rod (271) is fixedly connected to the pressing plate (27).

6. A urethral drainage device for medical care according to claim 5, characterized in that, A spring (272) is installed between the guide groove and the guide rod (271).

7. A urethral drainage device for medical care according to claim 1, characterized in that, The catheter (1) is also provided with a drug injection unit (3). The drug injection unit (3) includes a drug cavity (31) that is annularly opened on the inner wall of the catheter (1) and multiple drug outlets that are opened on the outer surface of the catheter (1). The drug cavity (31) and the drug outlets are connected internally. The catheter (1) is also equipped with a drug injection tube (32), and the drug injection tube (32) is connected internally to the drug cavity (31).

8. A urethral drainage device for medical care according to claim 7, characterized in that, The inside of the drug outlet is equipped with a one-way diaphragm (33), which facilitates the discharge of the internal drug outward.

9. A urethral drainage device for medical care according to claim 7, characterized in that, The catheter (1) has multiple sets of spiral grooves (4), and the multiple sets of drug outlets are all located on the spiral path of the spiral grooves (4).

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