Single-j gas dynamics urodynamic pressure catheter

Abstract

The utility model discloses a belong to medical instrument technical field, concretely is a single J gas catheterization dynamics pressure measuring pipe, including single J gas catheterization pressure measuring pipe and guide wire, single J gas catheterization pressure measuring pipe front end includes J pipe, first pressure measuring air bag and second pressure measuring air bag, single J gas catheterization pressure measuring pipe tail end includes first gas guide connecting assembly, second gas guide connecting assembly, drainage tube connecting assembly and drainage tube import and export, and the pipe wall outside of single J gas catheterization pressure measuring pipe is provided with a fine scale every 5cm along its length direction with first pressure measuring air bag as the starting point, and is provided with a coarse scale every 10cm, and the pressure measuring pipe front end is equipped with J pipe, and in the patient bladder is helical curved shape, can play the effect of internal fixation, and will not block urethral orifice, does not affect the pressure of the performance, and J pipe is provided with a plurality of drainage holes, and the residual urine of patient is discharged with high efficiency and the pressure measuring pipe is not easy to fold, and the air bag pressure measurement is used, and the operation is simple, and can measure pressure 360, and there is no bubble and pressure difference influence.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a single-J pneumatic urodynamic pressure measuring tube. Background Technology

[0002] Urodynamic testing, based on the fundamental principles and methods of fluid mechanics, measures pressure, flow rate, and bioelectrical activity in various parts of the urinary tract to understand the function and mechanism of urine transport, as well as the pathophysiological changes in voiding dysfunction. It expresses the patient's symptoms and complaints of urinary abnormalities in graphical and numerical form, providing a pathophysiological explanation for these symptoms. It objectively reflects the abnormal physiological activities of the bladder, urethra, and sphincter muscles, providing a basis for the clinical diagnosis, classification, and treatment of various types of urine storage and voiding dysfunction, and reflecting the potential influence of lower urinary tract conditions on upper urinary tract function changes.

[0003] Pressure measurement equipment is the core of urodynamic testing. In current hospital clinical practice, pneumatic pressure measurement tubes are widely used in urodynamic examinations, offering advantages such as simple operation, accurate pressure measurement, and a low rate of iatrogenic urinary tract infection. However, the tips of the pressure measurement catheters currently used are relatively thin and flexible, which can easily lead to catheter kinking and difficulty in insertion when inserting them into patients with urethral stricture or benign prostatic hyperplasia, resulting in insertion failure. Repeated insertion can damage the patient's urethral mucosa, increasing patient discomfort and prolonging the operation time. Traditional pneumatic pressure measurement tubes only have a pair of symmetrical drainage holes at the tip, and the tube is prone to kinking at the drainage hole location, affecting the insertion of the pressure measurement tube. Furthermore, the tips of traditional pneumatic pressure measurement tubes are all straight tubes. After the pressure measurement tube is inserted into the bladder, it is necessary to use auxiliary tools such as adhesive tape to fix the main trunk of the pressure measurement tube near the urethral orifice to the surrounding skin to prevent the pressure measurement tube from falling off during the examination. External fixation procedures are cumbersome and can easily cause discomfort to patients. Furthermore, the fixation aids, such as adhesive tape, can sometimes interfere with urodynamic examinations during voiding and can easily contaminate the urethral opening, leading to iatrogenic urinary tract infections.

[0004] In conclusion, it is essential to invent a urodynamic testing air conduction pressure measuring tube with self-fixation function, a user-friendly shape and texture, to effectively improve the aforementioned shortcomings and make it suitable for clinical practice, thereby enabling accurate, efficient, and comfortable urodynamic pressure measurement. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] Therefore, the purpose of this utility model is to provide a single-J balloon-guided urodynamic pressure measuring tube. The pressure measuring tube has a J-tube at the front end, which is spirally bent in the patient's bladder and can play a role in internal fixation without blocking the internal urethral orifice and affecting the pressure measurement. The J-tube is provided with multiple drainage holes, which can improve the efficiency of residual urine drainage and prevent the pressure measuring tube from kinking. The tip of the J-tube is blunt, which can prevent damage to the patient's urethral mucosa during insertion. The balloon pressure measurement is simple to operate and can measure pressure at 360° without the influence of air bubbles and pressure differences.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A single-J pneumatic urodynamic pressure monitoring tube, comprising:

[0009] Single-J air-conducting pressure measuring tube and guide wire;

[0010] The front end of the single-J air conduction pressure measuring tube includes a J tube, a first pressure measuring airbag and a second pressure measuring airbag, and the rear end of the single-J air conduction pressure measuring tube includes a first air conduction connection component, a second air conduction connection component, a drainage tube connection component and a drainage tube inlet and outlet.

[0011] The outer wall of the single J-type air conduction pressure measuring tube has a fine scale line every 5 cm along its length, starting from the first pressure measuring airbag, and a coarse scale line every 10 cm. The J-tube has at least three circular drainage holes: a first drainage hole, a second drainage hole, and a third drainage hole.

[0012] The single-J air-conducting pressure measuring tube body includes three non-interconnected pipes: a first air-conducting pipe, a second air-conducting pipe, and a drainage pipe;

[0013] The J-tube has a blind end at the front end and several drainage holes on the side that communicate with the drainage tube, opening at the inlet and outlet of the drainage tube;

[0014] The first pressure-measuring airbag is not connected to the outside world, but is connected to the first internal air duct, with the opening at the first air duct connection component;

[0015] The second pressure measuring airbag is not connected to the outside world, but is connected to the internal second air duct, and its opening is in the second air duct connection component;

[0016] The J tube is spirally bent when there is no guide wire inside, and can deform with the guide wire when there is a guide wire inside. After the guide wire is removed, it returns to the spirally bent shape.

[0017] As a preferred embodiment of the single-J-tube urodynamic pressure measuring tube described in this utility model, the J-tube is made of polyvinyl chloride or polyurethane, and the tip of the J-tube is rounded.

[0018] As a preferred embodiment of the single-J-tube urodynamic pressure measuring tube of this utility model, the first pressure measuring balloon and the second pressure measuring balloon are separated by cm, and the first pressure measuring balloon is separated from the J-tube by 2cm.

[0019] As a preferred embodiment of the single-J pneumatic urodynamic pressure measuring tube of this utility model, the guidewire includes a guidewire tip and a guidewire retainer, the guidewire cross-section is circular, its maximum diameter is slightly smaller than the short diameter of the drainage tube, and the guidewire length is matched with the single-J pneumatic pressure measuring tube.

[0020] As a preferred embodiment of the single-J air-guided urodynamic pressure measuring tube of this utility model, the guidewire tip is straight under normal conditions, can be slightly deformed under external force, and the guidewire tip is rounded.

[0021] As a preferred embodiment of the single-J air-conducted urodynamic pressure measuring tube of this utility model, wherein: the tail ends of the first air-conducting connecting component and the second air-conducting connecting component are provided with external thread grooves that cooperate with the internal thread grooves of the gas pressure measuring device connector.

[0022] As a preferred embodiment of the single-J air-guided urodynamic pressure measuring tube of this utility model, the drainage tube connecting assembly is provided with flat sheet-like structures on both sides, the minimum diameter of the drainage tube inlet and outlet is slightly larger than the maximum diameter of the guide wire, and the diameter of the drainage tube inlet and outlet gradually decreases from the outside to the inside.

[0023] As a preferred embodiment of the single-J pneumatic urodynamic pressure measuring tube described in this utility model, the inlet and outlet diameters of the drainage tube are matched with the diameter of a conventional medical syringe, and the diameter of the guide wire retainer is greater than the minimum inlet and outlet diameter of the drainage tube but less than the maximum inlet and outlet diameter of the drainage tube.

[0024] As a preferred embodiment of the single-J-type pneumatic urodynamic pressure measuring tube described in this utility model, the diameters of the first drainage hole, the second drainage hole, and the third drainage hole are smaller than the tip diameter of the guidewire.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] The pressure measuring tube has a J-tube at the front end, which is spirally bent inside the patient's bladder. This internal fixation function does not obstruct the urethral orifice and does not affect the pressure measurement. The J-tube has multiple drainage holes, which greatly improves the efficiency of residual urine drainage and prevents the pressure measuring tube from kinking. The blunt tip of the J-tube makes it less likely to damage the patient's urethral mucosa during insertion. The balloon pressure measurement is simple to operate and can measure pressure from 360° without the influence of air bubbles or pressure differences. Its small size causes less irritation to the pressure measurement site, which can reduce patient discomfort and lower the risk of cross-infection.

[0027] The first and second pressure-measuring balloons are 6 cm apart, and the first pressure-measuring balloon is 2 cm apart from the J tube, which facilitates the separate measurement of bladder and urethral pressure. The pressure-measuring tube has graduations on its outer wall to help determine the insertion depth and the position of the pressure-measuring balloon. The maximum diameter of the guidewire is slightly smaller than the diameter of the drainage tube and the minimum diameter of the drainage tube inlet and outlet. Its length matches that of the pressure-measuring tube. The diameter of the drainage tube inlet and outlet gradually decreases from the outside to the inside to facilitate the insertion of the guidewire into the pressure-measuring tube.

[0028] The guidewire tip is rounded, straight, and slightly deformable, facilitating catheter insertion in patients with urethral stricture, benign prostatic hyperplasia, etc. The drainage tube connection assembly has flat, plate-like structures on both sides for easy inspection and operator grip. The guidewire locking diameter is larger than the minimum diameter of the drainage tube inlet and outlet but smaller than the maximum diameter of the drainage tube inlet and outlet, ensuring that the guidewire and pressure measuring tube remain fixed after insertion. The inlet and outlet diameters of the drainage tube match the diameter of a standard medical syringe, facilitating connection with the syringe. The drainage hole diameter is smaller than the tip diameter of the guidewire to prevent the guidewire tip from passing through the drainage hole and affecting catheter insertion. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort. Among them:

[0030] Figure 1 This is a schematic diagram of the overall structure of a single-J gas-conducting pressure measuring tube disclosed in an embodiment of this utility model;

[0031] Figure 2 This is a schematic diagram of the overall structure of a guide wire for guiding a single-J gas pressure measuring tube, as disclosed in an embodiment of this utility model;

[0032] Figure 3 This is a schematic diagram of the overall structure of the guide wire inserted into the single-J air-conducting pressure measuring tube as disclosed in this embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the single-J gas-conducting pressure measuring tube body disclosed in this embodiment of the utility model;

[0034] Figure 5 This is a schematic diagram of the cross-sectional structure of the tube body when the guide wire is inserted into the single-J gas pressure measuring tube according to an embodiment of the present invention.

[0035] In the diagram: 100, single J-type air conduction pressure measuring tube; 110, J-tube; 111, first drainage hole; 112, second drainage hole; 113, third drainage hole; 121, first pressure measuring airbag; 122, second pressure measuring airbag; 131, first air conduction connection assembly; 132, second air conduction connection assembly; 141, drainage tube connection assembly; 142, drainage tube inlet and outlet; 151, first air guide tube; 152, second air guide tube; 153, drainage tube; 200, guide wire; 210, guide wire tip; 220, guide wire retainer. Detailed Implementation

[0036] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0040] This utility model provides a single-J pneumatic urodynamic pressure measuring tube. Please refer to [link / reference]. Figure 1-5 This includes a single-J air-conducting pressure measuring tube 100 and a guide wire 200;

[0041] Please see Figure 1-5 The front end of the single-J air conduction pressure measuring tube 100 includes a J tube 110, a first pressure measuring airbag 121 and a second pressure measuring airbag 122, and the rear end of the single-J air conduction pressure measuring tube 100 includes a first air conduction connection component 131, a second air conduction connection component 132, a drainage tube connection component 141 and a drainage tube inlet and outlet 142.

[0042] The outer wall of the single-J air conduction pressure measuring tube 100 has a fine graduation line every 5 cm and a coarse graduation line every 10 cm, starting from the first pressure measuring airbag 121 and extending along its length. The J tube 110 has at least three circular drainage holes: a first drainage hole 111, a second drainage hole 112, and a third drainage hole 113.

[0043] The single-J air-conducting pressure measuring tube 100 includes three non-interconnected pipes: the first air-conducting pipe 151, the second air-conducting pipe 152, and the drainage pipe 153.

[0044] The front end of J tube 110 is a blind end, and several drainage holes are opened on the side to communicate with drainage tube 153, with openings at the inlet and outlet 142 of the drainage tube.

[0045] The first pressure measuring airbag 121 is not connected to the outside, but is connected to the first internal air duct 151, and its opening is in the first air duct connection component 131;

[0046] The second pressure measuring airbag 122 is not connected to the outside, but is connected to the internal second air guide tube 152, and its opening is in the second air guide connection component 132.

[0047] When the J-tube 110 is not internally guided by the guidewire 200, it is spirally bent. When the guidewire 200 is inserted, it can deform with the guidewire. After the guidewire 200 is removed, it returns to its spirally bent shape.

[0048] J tube 110 is made of polyvinyl chloride or polyurethane, and the tip of J tube 110 is rounded.

[0049] The first pressure measuring airbag 121 and the second pressure measuring airbag 122 are 6cm apart, and the first pressure measuring airbag 121 is 2cm apart from the J tube 110.

[0050] The guide wire 200 includes a guide wire tip 210 and a guide wire latch 220. The guide wire 200 has a circular cross-section, and its maximum diameter is slightly smaller than the short diameter of the drainage tube 153. The length of the guide wire 200 matches that of the single-J gas conduction pressure measuring tube 100.

[0051] The guidewire tip 210 is straight under normal conditions, but can be slightly deformed under external force, and the guidewire tip 210 is rounded.

[0052] The first gas conductor connection assembly 131 and the second gas conductor connection assembly 132 are provided with external thread grooves at their tail ends that mate with the internal thread grooves of the gas pressure measuring device connector.

[0053] The drainage tube connection assembly 141 has flat sheet-like structures on both sides. The minimum diameter of the drainage tube inlet and outlet 142 is slightly larger than the maximum diameter of the guide wire 200. The diameter of the drainage tube inlet and outlet 142 gradually decreases from the outside to the inside.

[0054] The inlet and outlet diameter of the drainage tube is 142, which matches the diameter of a conventional medical syringe. The diameter of the guide wire clip 220 is larger than the minimum diameter of the inlet and outlet diameter of the drainage tube 142, but smaller than the maximum diameter of the inlet and outlet diameter of the drainage tube 142.

[0055] The diameters of the first drainage hole 111, the second drainage hole 112, and the third drainage hole 113 are smaller than the tip diameter of the guide wire front end 210;

[0056] Working principle: In use, the guidewire 200 is inserted into the single-J pneumatic pressure measuring tube 100 and fixed to the inlet / outlet 142 of the drainage tube by the guidewire clip 220. The J tube 110 straightens from a spiral bend along with the guidewire tip 210, allowing for urethral cannulation. The guidewire tip 210 is straight and blunt, and can deform slightly, making it easy to pass through the urethra of patients with urethral stricture, benign prostatic hyperplasia, etc. The insertion depth and the position of the pressure measuring balloon are determined by the scale lines set on the outer wall of the single-J pneumatic pressure measuring tube 100. After the single-J pneumatic pressure measuring tube 100 is placed in the appropriate position, the guidewire can be withdrawn. The J tube 110 returns to its spiral bend shape and is fixed in the patient's bladder. If there is residual urine in the patient's bladder, it can flow out through several drainage holes on the J tube 110 through the drainage tube 153 from the inlet / outlet 142 of the drainage tube. Alternatively, it can be used... The injection device is connected to the inlet and outlet of the drainage tube 142 and then withdrawn. During urodynamic testing, the first air conduction connection component 131 and the second air conduction connection component 132 are connected to the gas pressure measuring device with a matching internal thread groove through the external thread groove. The first pressure measuring balloon 121 and the second pressure measuring balloon 122 detect the pressure of the bladder and urethra, respectively. The pressure changes of the bladder and urethra are detected by the gas pressure measuring device by causing corresponding changes in the volume of the balloons. The drainage tube connection component 141 is connected to the injection device through the inlet and outlet of the drainage tube 142. The tester can hold the flat plate-like structure on both sides of the drainage tube connection component 141 to facilitate the connection of the drainage tube inlet and outlet 142 with the injection device. By injecting water into the bladder and draining water, the process of urine storage and urination is simulated, and the pressure and changes of each part during the process of urine storage and urination are detected.

[0057] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A single-J pneumatic urodynamic pressure measuring tube, characterized in that, include: Single-J air-conducting pressure measuring tube (100) and guide wire (200); The front end of the single J-type air conduction pressure measuring tube (100) includes a J tube (110), a first pressure measuring airbag (121), and a second pressure measuring airbag (122). The rear end of the single J-type air conduction pressure measuring tube (100) includes a first air conduction connection assembly (131), a second air conduction connection assembly (132), a drainage tube connection assembly (141), and a drainage tube inlet and outlet (142). The outer wall of the single J-type air conduction pressure measuring tube (100) has a fine scale line every 5 cm along its length starting from the first pressure measuring airbag (121) and a coarse scale line every 10 cm. The J-tube (110) has at least three circular drainage holes: a first drainage hole (111), a second drainage hole (112), and a third drainage hole (113). The single-J air-conducting pressure measuring tube (100) includes three non-interconnected pipes: a first air-conducting pipe (151), a second air-conducting pipe (152), and a drainage pipe (153). The J tube (110) has a blind end at the front end and several drainage holes on the side that are connected to the drainage tube (153), with openings at the inlet and outlet (142) of the drainage tube. The first pressure measuring airbag (121) is not connected to the outside world, but is connected to the first internal air duct (151), and opens into the first air duct connection assembly (131); The second pressure measuring airbag (122) is not connected to the outside world, but is connected to the internal second air guide tube (152), and opens into the second air guide connection assembly (132); The J tube (110) is spirally bent when there is no guide wire (200) inside. When there is a guide wire (200) inside, it can deform with the guide wire. After the guide wire (200) is removed, it returns to the spirally bent shape.

2. The single-pneumatic urodynamic pressure measuring tube according to claim 1, characterized in that, The J tube (110) is made of polyvinyl chloride or polyurethane, and the tip of the J tube (110) is rounded.

3. The single-pneumatic urodynamic pressure measuring tube according to claim 1, characterized in that, The first pressure measuring airbag (121) and the second pressure measuring airbag (122) are 6cm apart, and the first pressure measuring airbag (121) is 2cm apart from the J tube (110).

4. The single-pneumatic urodynamic pressure measuring tube according to claim 1, characterized in that, The guide wire (200) includes a guide wire tip (210) and a guide wire latch (220). The guide wire (200) has a circular cross-section, and its maximum diameter is slightly smaller than the short diameter of the drainage tube (153). The length of the guide wire (200) matches that of the single-J gas pressure measuring tube (100).

5. A single-J pneumatic urodynamic pressure measuring tube according to claim 4, characterized in that, The guidewire tip (210) is straight under normal conditions, but can be slightly deformed under external force, and the guidewire tip (210) is rounded.

6. The single-pneumatic urodynamic pressure measuring tube according to claim 1, characterized in that, The tail ends of the first gas conductor connection assembly (131) and the second gas conductor connection assembly (132) are provided with external thread grooves that cooperate with the internal thread groove of the gas pressure measuring device connector.

7. A single-pneumatic urodynamic pressure monitoring tube according to claim 1, characterized in that, The drainage tube connection assembly (141) has flat sheet-like structures on both sides. The minimum diameter of the drainage tube inlet and outlet (142) is slightly larger than the maximum diameter of the guide wire (200). The diameter of the drainage tube inlet and outlet (142) gradually decreases from the outside to the inside.

8. A single-J pneumatic urodynamic pressure measuring tube according to claim 7, characterized in that, The inlet and outlet (142) diameter of the drainage tube is matched with the diameter of a conventional medical syringe, and the diameter of the guide wire clip (220) is greater than the minimum diameter of the inlet and outlet (142) of the drainage tube and less than the maximum diameter of the inlet and outlet (142) of the drainage tube.

9. A single-J pneumatic urodynamic pressure measuring tube according to claim 8, characterized in that, The diameters of the first drainage hole (111), the second drainage hole (112), and the third drainage hole (113) are smaller than the tip diameter of the guide wire tip (210).

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