Urethral catheter for male urethrography with precise graduation and external fixation device

Abstract

This invention provides a urinary catheter for male urethrography with precise graduations and an external fixation device, comprising a urinary catheter and an external fixation device slidably fitted onto the outer wall of the urinary catheter. The external fixation device includes an elastic rubber ring on the side closest to the body, an umbrella-shaped telescopic cover on the side of the elastic rubber ring away from the body, a support arm on the side of the umbrella-shaped telescopic cover away from the elastic rubber ring, and a limiting component on the other side of the support arm. The support arm is sleeve-shaped and is sequentially and fixedly connected to the umbrella-shaped telescopic cover and the elastic rubber ring, and fitted onto the urinary catheter. The outer wall of the urinary catheter is provided with a graduation recognition component. This invention provides reliable and non-dislodgement of the urinary catheter; it is simple to operate, reduces patient pain, improves patient safety and comfort, avoids urethral damage caused by balloon-type internal fixation, and its applicable population can be extended to infants and young children; it can improve the doctor's operating experience, avoid repeated radiation damage, and effectively shorten the operation time; it precisely controls the insertion depth, avoiding excessive or superficial insertion that could cause injury to the patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and specifically to a male urethral catheter with precise graduations and an external fixation device. Background Technology

[0002] Urethral contrast radiography is the gold standard for diagnosing urethral strictures, diverticula, fistulas, and other lesions. In male transurethral contrast radiography, catheter fixation is a key factor affecting the examination results. Currently, the following technical problems exist in clinical practice:

[0003] (1) Traditional urinary catheters lack effective fixation devices and rely on manual fixation or external fixation with adhesive tape to the patient's thigh. The fixation is unreliable and easy to fall off. Moreover, the fixation operation is complicated, prolongs the examination time, and increases the patient's pain.

[0004] (2) When the contrast agent is injected into the urinary catheter, the pressure recedes, causing the contrast agent to leak out and the image to become blurred;

[0005] (3) The urinary catheter has no precise markings, making it difficult to control the insertion depth. If it is inserted too deeply, it may damage the bladder; if it is inserted too shallowly, it may fall out.

[0006] (4) The balloon design of the existing Foley catheter requires entry into the bladder and is not suitable for contrast procedures that only require urethral fixation.

[0007] In summary, there is an urgent need to design a male urethral catheter with precise graduations and an external fixation device that overcomes the above-mentioned problems. Summary of the Invention

[0008] The purpose of this invention is to provide a male urethrography catheter with precise graduations and an external fixation device that is easy to operate, reliably fixed, and allows for convenient control of insertion depth.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is: a male urethral contrast catheter with precise graduations and an external fixation device, comprising:

[0010] Urinary catheter; Urinary catheter 1 is made of medical-grade silicone material, with a length of 25-30cm and an outer diameter of 5-7mm; it is divided into an internal section and an external section. The internal section has a smooth surface to reduce friction, and the external section is equipped with an operating mechanism.

[0011] It also includes an external fixation device that is slidably sleeved on the outer wall of the urinary catheter;

[0012] The external fixation device includes an elastic rubber ring on the side close to the human body, an umbrella-shaped telescopic cover on the side of the elastic rubber ring away from the human body, a support arm on the side of the umbrella-shaped telescopic cover away from the elastic rubber ring, and a limiting component on the other side of the support arm. The support arm is sleeve-shaped and is sequentially fixedly connected to the umbrella-shaped telescopic cover and the elastic rubber ring and sleeved on the urinary catheter.

[0013] The outer wall of the urinary catheter is equipped with a scale recognition component.

[0014] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0015] Furthermore, the limiting component includes a fixing sleeve fixedly disposed on the side of the support arm away from the umbrella-shaped telescopic cover, and the fixing sleeve is slidably sleeved on the outer wall of the urinary catheter;

[0016] The other end of the fixing sleeve is provided with a plurality of second claw-shaped guide wires evenly distributed along its annular edge. The other end of each second claw-shaped guide wire is integrally connected to a second connecting ring. A pair of tightening wires are respectively passed through the multiple second connecting rings in opposite directions. The free ends of the tightening wires are respectively passed through a C-shaped buckle. The outer wall of the fixing sleeve is provided with an annular groove, and the C-shaped buckle can be locked in the annular groove.

[0017] Furthermore, the umbrella-shaped telescopic cover includes a collar fixedly connected to the support arm and a plurality of first claw-shaped guide wires uniformly fixed on one side of the collar. There are multiple first claw-shaped guide wires, and their other ends are connected to the elastic rubber ring through a notched ring. One notched end of the notched ring is integrally connected to the front end of the first claw-shaped guide wire. The plurality of first claw-shaped guide wires surround to form a hollow umbrella-shaped telescopic cover.

[0018] Furthermore, each free end of the tightening cable is connected to an anti-detachment block.

[0019] Furthermore, an annular serrated block is fixedly provided on one side of the inner bottom wall of the annular slot, and a serrated slot matching the serrated block is provided on one side of the inner side wall of the C-type buckle.

[0020] Furthermore, the outer wall of the first claw-shaped guide wire near the end of the elastic rubber ring is uniformly provided with multiple serrated grooves.

[0021] Furthermore, the support arm is a spring column.

[0022] Furthermore, both the first claw-shaped guidewire and the second claw-shaped guidewire are made of nickel-titanium alloy.

[0023] Furthermore, the scale recognition component includes a two-color scale line on the outer wall of the ureter and a digital mark set every 5 cm;

[0024] All the scale recognition components are made of fluorescent materials.

[0025] Furthermore, the tail end of the urinary catheter is sealed with a Luer connector.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The present invention relates to a male urethral contrast catheter with precise graduations and an external fixation device. The external fixation device, specifically consisting of an elastic rubber ring, an umbrella-shaped telescopic shield, a support arm, and a limiting component, is fitted onto the outer wall of the catheter. Only the catheter needs to be inserted into the urethra; the other components are external fixation devices and do not need to be placed inside the urethra. In practical use, the catheter is first inserted into the urethra, then the elastic rubber ring and umbrella-shaped telescopic shield are moved to the glans penis. The elastic rubber ring is moved upwards until it is positioned just below the coronal sulcus. Due to the elasticity of the rubber ring, comfort is improved without damaging the urethra. Finally, the limiting component fixes the side of the entire external fixation device away from the body to the catheter wall. The external fixation device connects the catheter to the body, preventing slippage and achieving the purpose of external fixation of the catheter. The external fixation device in this system reliably secures the urinary catheter, preventing it from easily dislodging. It is also simple to operate, reducing patient pain, improving patient safety and comfort, and avoiding urethral damage caused by balloon-type internal fixation. Its applicability can be extended to infants and young children. Furthermore, it enhances the doctor's operating experience, avoids repeated radiation damage, and effectively shortens the operation time.

[0028] 2. The male urethrography catheter of the present invention with precise scale and external fixation device, by setting a scale recognition component on the outer wall of the catheter, can help doctors to formulate precise surgical plans and accurately control the insertion depth through precise scale display and X-ray imaging calibration, so as to avoid damage to the patient's body caused by being too deep or too shallow.

[0029] 3. The male urethrography catheter of the present invention, with precise graduations and an external fixation device, uses a fixing sleeve, a second claw-shaped guidewire, a second connecting ring, a tightening wire, a C-shaped buckle, and an annular groove. This fixation method, similar to the closure of a sachet, tightly secures one end of the second claw-shaped guidewire to the catheter. This ensures that both ends of the external fixation device are fixed to the glans penis and the catheter side, respectively. Once both ends are fixed, the catheter remains firmly attached to the penis and will not fall off. A spring-loaded support arm in the middle maintains patient comfort. Furthermore, the sachet-like fixation method allows the external fixation device to be used with different sizes of catheters. By tightening the tightening wire, it can be adapted to different types of clinically used catheters, making it highly practical.

[0030] 4. The male urethral contrast catheter of the present invention, which has a precise scale and an external fixation device, is more convenient to operate by using a syringe to inject contrast agent into the catheter by setting a Luer connector at the tail end of the catheter. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the male urethral contrast catheter with precise graduations and external fixation device provided by the present invention. Figure 1 (The tightened cable is not tightened);

[0032] Figure 2 This is a schematic diagram of the overall structure of the male urethral contrast catheter with precise graduations and external fixation device provided by the present invention. Figure 2 (Tightening the cable in tightened state);

[0033] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0034] Figure 4 This is a schematic diagram of the overall structure of the connection between the first claw-shaped guide wire and the elastic rubber ring in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the split structure of the C-type buckle and the fixing sleeve in an embodiment of the present invention;

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Urinary catheter;

[0038] 2. External fixing device; 21. Elastic rubber ring; 22. Umbrella-shaped telescopic cover; 221. Collar; 222. First claw-shaped guide wire; 223. Notched ring; 224. Serrated groove; 23. Support arm; 24. Limiting component; 241. Fixing sleeve; 242. Second claw-shaped guide wire; 243. Second connecting ring; 244. Tightening cable; 245. C-type buckle; 246. Annular groove; 247. Anti-detachment block; 248. Anti-slip toothed block;

[0039] 3. Scale recognition component; 31. Two-color scale lines; 32. Numerical markers;

[0040] 4. Luer connector. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The descriptions of directions such as "left," "right," "front," "rear," "up," and "down" used below are defined relative to the accompanying drawings and do not represent the actual direction of use of the winding machine.

[0042] Please see Figures 1 to 5 A male urethral catheter with precise graduations and an external fixation device, comprising:

[0043] Urinary catheter 1;

[0044] It also includes an external fixation device 2 that is slidably sleeved on the outer wall of the urinary catheter 1; the external fixation device 2 is not a balloon-type internal fixation, but an external fixation structure that can fix the urinary catheter 1 outside the body, thereby avoiding slippage during the angiography process and eliminating the need for manual fixation.

[0045] The external fixation device 2 includes an elastic rubber ring 21 near the human body, an umbrella-shaped telescopic cover 22 on the side of the elastic rubber ring 21 away from the human body, a support arm 23 on the side of the umbrella-shaped telescopic cover 22 away from the elastic rubber ring 21, and a limiting component 24 on the other side of the support arm 23. The support arm 23 is sleeve-shaped and is sequentially fixedly connected to the umbrella-shaped telescopic cover 22 and the elastic rubber ring 21 and sleeved on the urinary catheter 1. The elastic rubber ring 21 can extend and retract to pass through the glans penis and be inserted below the coronal sulcus. The umbrella-shaped telescopic cover 22 can extend and retract to cover the glans penis. The limiting component 24 is used to fix one end of the urinary catheter 1, thereby connecting the urinary catheter 1 to the human body through the external fixation device 2, avoiding slippage, and achieving the purpose of external fixation of the urinary catheter.

[0046] The outer wall of the urinary catheter 1 is equipped with a scale recognition component 3. Through precise scale display and X-ray imaging calibration, doctors can make precise surgical plans and accurately control the insertion depth of the urinary catheter 1 to avoid damage to the patient's body caused by inserting it too deeply or too shallowly.

[0047] Preferably, the limiting component 24 includes a fixing sleeve 241 fixedly disposed on the side of the support arm 23 away from the umbrella-shaped telescopic cover 22, and the fixing sleeve 241 is slidably sleeved on the outer wall of the urinary catheter 1;

[0048] The other end of the fixing sleeve 241 is provided with a plurality of second claw-shaped guide wires 242 evenly distributed along its annular edge. The other end of each second claw-shaped guide wire 242 is integrally connected to a second connecting ring 243. A pair of tightening wires 244 are respectively passed through the multiple second connecting rings 243 in opposite directions. The free ends of the tightening wires 244 are respectively passed through a C-shaped buckle 245. The outer wall of the fixing sleeve 241 is provided with an annular groove 246, and the C-shaped buckle 245 can be locked in the annular groove 246. The structure formed by the second claw-shaped guidewire 242, the second connecting ring 243, and the tightening wire 244 is similar to a sachet. The tightening wire 244 is similar to the drawstrings on both sides of the sachet opening. By tightening the tightening wires 244 on both sides, one end of the second claw-shaped guidewire 242 can be tightly fixed to the urinary catheter 1. This ensures that both ends of the entire external fixation device 2 are fixed to the tip of the patient's penis and the side of the urinary catheter 1, respectively. After both ends are fixed, the urinary catheter is fixed to the penis and will not fall off. Furthermore, the sachet-like fixing method allows the external fixation device 2 in this solution to be applicable to different sizes of urinary catheters. As long as the tightening wire 244 is tightened, it can be adapted to different models of clinically commonly used urinary catheters, allowing different models of urinary catheters to pass through, which has strong practicality.

[0049] Preferably, the umbrella-shaped telescopic cover 22 includes a collar 221 fixedly connected to the support arm 23 and a plurality of first claw-shaped guide wires 222 uniformly fixed on one side of the collar 221. There are multiple first claw-shaped guide wires 222, and their other ends are connected to the elastic rubber ring 21 through a notched ring 223. One notched end of the notched ring 223 is integrally connected to the front end of the first claw-shaped guide wire 222. The plurality of first claw-shaped guide wires 222 surround to form a hollow umbrella-shaped telescopic cover. This structure makes it easy to adjust the size of the entire umbrella-shaped telescopic cover 22. Moreover, the umbrella-shaped telescopic cover formed by the plurality of first claw-shaped guide wires 222 is a rigid frame, which not only allows the size to be adjusted to suit different patients, but also reduces the contact area with the patient's body, resulting in high comfort.

[0050] Preferably, each free end of the tightening cable 244 is connected to an anti-slip block 247 to prevent the tightening cable 244 from slipping off the C-shaped buckle 245.

[0051] Preferably, an annular serrated block 249 is fixedly provided on one side of the inner bottom wall of the annular groove 246, and a serrated groove 248 matching the serrated block 249 is provided on one side of the inner side wall of the C-type buckle 245. When fixing the "sachet-like" fixing device on the outside of the urinary catheter, a pair of tightening pull lines 244 are pulled taut and wound around the annular groove 246 on one side of the serrated block 249 of the fixing sleeve 241. Then, the C-type buckle 245 is snapped into the annular groove 246. Specifically, the smooth inner wall of the C-type buckle 245 is aligned with the smooth surface of the annular groove 246, and the serrated groove 248 in the C-type buckle 245 is aligned with the serrated block 249 in the annular groove 246. This clamps and fixes the tightening pull line 244, further achieving a stable fixation and effectively preventing the C-type buckle 245 from rotating or shifting relative to the annular groove 246. Among them, the tightening cable 244 is made of nylon, making it more robust and durable.

[0052] Preferably, the outer wall of the first claw-shaped guide wire 222 near the end of the elastic rubber ring 21 is uniformly provided with a plurality of serrated grooves 224. For example... Figure 4 As shown, the front end of the first claw-shaped guide wire 222 is provided with a serrated groove 224, which can push the elastic rubber ring 21 upward from the notch of the notched ring 223 into the appropriate serrated groove 224, so as to achieve the purpose of tightening and clamping the hollow umbrella-shaped telescopic cover 22 formed by the first claw-shaped guide wire 222.

[0053] Preferably, the support arm 23 is a spring column. The use of a spring column-type support arm 23 in the middle helps maintain patient comfort.

[0054] Preferably, both the first claw-shaped guidewire 222 and the second claw-shaped guidewire 242 are made of nickel-titanium alloy with a thickness of 0.1 mm and rounded edges (R angle ≥ 0.05 mm). Alternatively, a layer of silicone can be coated onto the outer wall of the first claw-shaped guidewire 222 to improve patient comfort.

[0055] Preferably, the scale recognition component 3 includes a two-color scale line 31 on the outer wall of the urinary catheter 1 and a number mark 32 set every 5cm; the two-color scale line is set every 1cm along the main body of the urinary catheter, and a conspicuous number mark is marked every 5cm, such as 5, 10, 15, 20cm, etc.

[0056] The scale recognition components 3 are all made of fluorescent materials, which are easy to develop under X-rays.

[0057] Preferably, the tail end of the urinary catheter 1 is sealed with a Luer connector 4. The Luer connector 4 is a standard connector, and a syringe can be used to inject contrast agent into the urinary catheter 1, making the operation more convenient.

[0058] The present invention has been further described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A urinary catheter for male urethrography with precise graduations and an external fixation device, comprising a urinary catheter (1), characterized in that: It also includes an external fixation device (2) that is slidably sleeved on the outer wall of the urinary catheter (1); The external fixation device (2) includes an elastic rubber ring (21) close to the human body, an umbrella-shaped telescopic cover (22) on the side of the elastic rubber ring (21) away from the human body, a support arm (23) on the side of the umbrella-shaped telescopic cover (22) away from the elastic rubber ring (21), and a limiting component (24) on the other side of the support arm (23). The support arm (23) is sleeve-shaped and is sequentially fixedly connected to the umbrella-shaped telescopic cover (22) and the elastic rubber ring (21) and sleeved on the urinary catheter (1). The outer wall of the urinary catheter (1) is provided with a scale recognition component (3); The limiting component (24) includes a fixing sleeve (241) fixedly disposed on the side of the support arm (23) away from the umbrella-shaped telescopic cover (22), and the fixing sleeve (241) is slidably disposed on the outer wall of the urinary catheter (1); The other end of the fixing sleeve (241) is provided with a plurality of second claw-shaped guide wires (242) evenly distributed along its annular edge. The other end of the second claw-shaped guide wires (242) is integrally connected to a second connecting ring (243). A pair of tightening wires (244) are respectively passed through the multiple second connecting rings (243) in opposite directions. The free ends of the tightening wires (244) are respectively passed through a C-shaped buckle (245). The outer wall of the fixing sleeve (241) is provided with an annular groove (246). The C-shaped buckle (245) is engaged in the annular groove (246). The umbrella-shaped telescopic cover (22) includes a collar (221) fixedly connected to the support arm (23) and a plurality of first claw-shaped guide wires (222) uniformly fixed on one side of the collar (221). There are multiple first claw-shaped guide wires (222), and their other ends are connected to the elastic rubber ring (21) through a notched ring (223). One end of the notch of the notched ring (223) is integrally connected to the front end of the first claw-shaped guide wire (222). The plurality of first claw-shaped guide wires (222) surround to form a hollow umbrella-shaped telescopic cover. An annular serrated block (249) is fixedly provided on one side of the inner bottom wall of the annular slot (246), and a serrated slot (248) matching the serrated block (249) is provided on one side of the inner side wall of the C-type buckle (245). The outer side wall of the first claw-shaped guide wire (222) near the end of the elastic rubber ring (21) is uniformly provided with a plurality of serrated grooves (224).

2. The male urethral contrast catheter with precise graduations and external fixation device according to claim 1, characterized in that, Each of the free ends of the tightening cable (244) is connected to an anti-detachment block (247).

3. The male urethral contrast catheter with precise graduations and external fixation device according to claim 1, characterized in that, The support arm (23) is a spring column.

4. The male urethral contrast catheter with precise graduations and external fixation device according to claim 1, characterized in that, Both the first claw-shaped guidewire (222) and the second claw-shaped guidewire (242) are made of nickel-titanium alloy.

5. The male urethral contrast catheter with precise graduations and external fixation device according to claim 1, characterized in that: The scale recognition component (3) includes a two-color scale line (31) on the outer wall of the urinary catheter (1) and a number mark (32) set every 5 cm. The scale recognition components (3) are all made of fluorescent materials.

6. The male urethral contrast catheter with precise graduations and external fixation device according to claim 1, characterized in that, The tail end of the urinary catheter (1) is sealed with a Luer connector (4).

Images