One-way valve structure of anti-backflow pressure measuring catheter
By designing a one-way valve structure for the anti-backflow gas pressure measuring catheter in the urodynamic analyzer and using a sealing plug to prevent liquid backflow, the problem of pathogenic bacteria in the urethra and bladder entering the perfusion circuit in reverse has been solved, achieving cost reduction and improved detection efficiency.
Patent Information
- Application Number
- CN202520687274.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-11
AI Technical Summary
Existing urodynamic analyzers suffer from fluid backflow in their perfusion circuits, which allows pathogens from the patient's urethra and bladder to enter the perfusion circuit retrogradely, increasing usage costs and reducing testing efficiency.
A backflow prevention gas pressure measuring conduit check valve structure is designed, which uses two conduits and a check valve mechanism. The openings of the inlet and outlet channels are blocked by first and second sealing plugs respectively to prevent backflow.
It effectively prevents pathogens from entering the perfusion circuit retrogradely, reduces the frequency of equipment replacement and disinfection, lowers operating costs, and improves detection efficiency.
Smart Images
Figure CN223953348U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical equipment, concretely is a one-way valve structure of anti -reverse flow gas pressure measuring catheter. BACKGROUND
[0002] Urodynamics analyzer is a kind of equipment specially used for diagnosing lower urinary tract dysfunction.In work, it connects urethral pressure catheter to bladder or urethra through perfusion circuit and carries out constant flow perfusion.Using the principle of fluid mechanics, the pressure data of bladder or urethra are obtained by measuring the pressure in urethral pressure catheter.
[0003] Although the perfusion circuit is designed for one-way flow, but actually there is liquid reflux phenomenon, and this reflux can cause pathogenic bacteria in the urethra and bladder of patient to retrograde into perfusion circuit, since perfusion circuit is easily contaminated, when using to other patients, either replace or disinfect once, which significantly increases the cost of use, and also reduces detection efficiency, for this, the application provides a one-way valve structure of anti -reverse flow gas pressure measuring catheter. CONTENT OF UTILITY MODEL
[0004] To solve the problems in the background art, the utility model provides the following technical scheme: a one-way valve structure of anti -reverse flow gas pressure measuring catheter, including two catheters, the two catheters are provided with a one-way valve mechanism, the two ends of the one-way valve mechanism are fixedly installed with fixed pipes, and the two catheters are respectively tightly inserted into the fixed pipes at the two ends of the one-way valve structure;The one-way valve mechanism includes a valve body, a first sealing plug and a second sealing plug, a cavity is formed in the inside of the valve body, a liquid inlet channel is formed in the left end of the valve body and communicated with the bottom of the cavity, and a liquid outlet channel is formed in the right end of the valve body and communicated with the side wall of the cavity, the first sealing plug is movably inserted into the communication between the liquid inlet channel and the cavity, and the second sealing plug is movably inserted into the opening at the end of the liquid outlet channel away from the cavity.
[0005] Preferably, the liquid inlet channel is provided with an S shape, one end of the liquid inlet channel communicated with the cavity is provided with a funnel shape, the lower half of the first sealing plug is provided with a circular truncated cone shape with wide top and narrow bottom, and the lower half of the first sealing plug is inserted between the funnel ends of the liquid inlet channel, and a first spring is fixedly connected between the top end of the inner wall of the cavity and the top of the first sealing plug.
[0006] Preferably, when the bottom of the upper half of the first sealing plug is in contact with the bottom of the cavity, the side wall of the lower half of the first sealing plug is attached to the inner wall of the funnel end of the liquid inlet channel, and the diameter of the upper half of the first sealing plug is smaller than the diameter of the cavity.
[0007] Preferably, the liquid outlet channel is funnel-shaped at the end away from the cavity, the second sealing plug is located between the funnel ends of the liquid outlet channel, a sleeve is arranged at the funnel end of the liquid outlet channel, four fixed rods are uniformly and fixedly connected between the outer wall of the sleeve and the inner wall of the liquid outlet channel, the second sealing plug is fixedly connected with a connecting rod inserted into the sleeve, and a second spring is sleeved on the connecting rod and fixedly connected at both ends to the second sealing plug and the sleeve.
[0008] Preferably, the side wall of the second sealing plug can be attached to the inner wall of the funnel end of the liquid outlet channel.
[0009] Preferably, the two conduits correspond to the liquid inlet channel and the liquid outlet channel at both ends of the valve body, respectively.
[0010] Compared with the prior art, the utility model has the beneficial effects that:
[0011] When backflow occurs in the pipeline, the first sealing plug and the second sealing plug in the one-way valve mechanism can block the openings of the liquid inlet channel and the liquid outlet channel, respectively, so that the pathogenic bacteria in the urethra and the bladder of the patient cannot enter the perfusion circuit in reverse, subsequent use of the device for detection of other patients is facilitated, the cost of use is reduced, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation to the utility model. In the drawings:
[0013] Figure 1 It is a structural schematic view of the utility model as a whole;
[0014] Figure 2 It is a structural schematic view of the one-way valve mechanism of the utility model;
[0015] Figure 3 It is a structural schematic view of the valve body of the utility model;
[0016] Figure 4 It is a structural schematic view of the connection between the second sealing plug and the sleeve of the utility model;
[0017] In the drawings: 1, conduit; 2, one-way valve mechanism; 21, valve body; 22, first sealing plug; 23, second sealing plug; 3, fixed pipe; 4, cavity; 5, liquid inlet channel; 6, first spring; 7, liquid outlet channel; 8, sleeve; 9, fixed rod; 10, second spring. DETAILED DESCRIPTION
[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments; based on the embodiments in the present application, all the other embodiments obtained by the person of ordinary skill in the art without creative labor fall within the protection scope of the present application.
[0019] By Figures 1-4 The utility model discloses a two catheter 1 is provided with check valve mechanism 2 between two catheter 1, and the fixed pipe 3 is fixedly installed at both ends of check valve mechanism 2, and two catheter 1 are respectively tightly inserted in the fixed pipe 3 at both ends of check valve structure, check valve mechanism 2 includes valve body 21, first sealing plug 22 and second sealing plug 23, the inside of valve body 21 is provided with cavity 4, and the left end of valve body 21 is provided with liquid inlet channel 5 communicated with the bottom of cavity 4, and the right end of valve body 21 is provided with liquid outlet channel 7 communicated with the lateral wall of cavity 4, first sealing plug 22 is movably inserted in the communication of liquid inlet channel 5 and cavity 4, and second sealing plug 23 is movably inserted in the opening at the end of liquid outlet channel 7 away from cavity 4.
[0020] As Figure 2 And Figure 3 The utility model discloses a two catheter 1 is provided with check valve mechanism 2 between two catheter 1, and the fixed pipe 3 is fixedly installed at both ends of check valve mechanism 2, and two catheter 1 are respectively tightly inserted in the fixed pipe 3 at both ends of check valve structure, check valve mechanism 2 includes valve body 21, first sealing plug 22 and second sealing plug 23, the inside of valve body 21 is provided with cavity 4, and the left end of valve body 21 is provided with liquid inlet channel 5 communicated with the bottom of cavity 4, and the right end of valve body 21 is provided with liquid outlet channel 7 communicated with the lateral wall of cavity 4, first sealing plug 22 is movably inserted in the communication of liquid inlet channel 5 and cavity 4, and second sealing plug 23 is movably inserted in the opening at the end of liquid outlet channel 7 away from cavity 4.
[0021] As Figure 2 And Figure 3 The utility model discloses a two catheter 1 is provided with check valve mechanism 2 between two catheter 1, and the fixed pipe 3 is fixedly installed at both ends of check valve mechanism 2, and two catheter 1 are respectively tightly inserted in the fixed pipe 3 at both ends of check valve structure, check valve mechanism 2 includes valve body 21, first sealing plug 22 and second sealing plug 23, the inside of valve body 21 is provided with cavity 4, and the left end of valve body 21 is provided with liquid inlet channel 5 communicated with the bottom of cavity 4, and the right end of valve body 21 is provided with liquid outlet channel 7 communicated with the lateral wall of cavity 4, first sealing plug 22 is movably inserted in the communication of liquid inlet channel 5 and cavity 4, and second sealing plug 23 is movably inserted in the opening at the end of liquid outlet channel 7 away from cavity 4.
[0022] As Figure 2 And Figure 4As shown in the figure, the end of the liquid outlet channel 7 away from the cavity 4 is provided with a funnel shape, the second sealing plug 23 is located between the funnel end of the liquid outlet channel 7, a sleeve 8 is arranged at the funnel end of the liquid outlet channel 7, four fixed rods 9 are uniformly and fixedly connected between the outer wall of the sleeve 8 and the inner wall of the liquid outlet channel 7, the outer side of the second sealing plug 23 is fixedly connected with a connecting rod inserted in the sleeve 8, a second spring 10 is sleeved on the connecting rod, and the two ends of the second spring 10 are fixedly connected to the second sealing plug 23 and the sleeve 8 respectively. By allowing the connecting rod to be movably inserted between the sleeve 8, the position of the second sealing plug 23 can be connected and constrained, and when the second sealing plug 23 is not pushed by water pressure, the second sealing plug 23 can be pushed to block the liquid outlet channel 7 under the action of the second spring 10.
[0023] As shown in the figure, Figure 2 The side wall of the second sealing plug 23 can be attached to the inner wall of the funnel end of the liquid outlet channel 7, and by plugging the second sealing plug 23 in the funnel end of the liquid outlet channel 7, the liquid outlet channel 7 can be blocked, so that the backflow between the pipelines is blocked by the second sealing plug 23, so that the pathogenic bacteria in the urethra and bladder of the patient cannot pass through the one-way valve mechanism 2.
[0024] As shown in the figure, Figure 1 And Figure 2 The two catheters 1 correspond to the liquid inlet channel 5 and the liquid outlet channel 7 at both ends of the valve body 21 respectively, the valve body 21 can realize the connection between the two catheters 1, and the one-way valve mechanism 2 can prevent backflow between the two catheters 1, and the two catheters 1 can normally circulate.
[0025] It should be noted that in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.
[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A structure of a one-way valve of a reverse flow prevention air manometer catheter comprising two catheters (1), characterized in that: One-way valve mechanism (2) is arranged between two pipes (1), fixed pipe (3) is fixedly installed at both ends of one-way valve mechanism (2), and two pipes (1) are respectively tightly inserted into fixed pipes (3) at both ends of one-way valve mechanism. The one-way valve mechanism (2) comprises a valve body (21), a first sealing plug (22) and a second sealing plug (23), a cavity (4) is formed in the valve body (21), a liquid inlet channel (5) is formed at the left end of the valve body (21) and communicates with the bottom of the cavity (4), a liquid outlet channel (7) is formed at the right end of the valve body (21) and communicates with the side wall of the cavity (4), the first sealing plug (22) is movably inserted into the communication part of the liquid inlet channel (5) and the cavity (4), and the second sealing plug (23) is movably inserted into the opening at the end of the liquid outlet channel (7) away from the cavity (4).
2. A structure of a one-way valve of a gas pressure catheter according to claim 1, characterized in that: The liquid inlet channel (5) is in S shape, one end of the liquid inlet channel (5) communicating with the cavity (4) is in funnel shape, the lower half of the first sealing plug (22) is in circular truncated cone shape with the upper part wider than the lower part, and the lower half of the first sealing plug (22) is inserted between the funnel ends of the liquid inlet channel (5), and the first spring (6) is fixedly connected between the top end of the inner wall of the cavity (4) and the top of the first sealing plug (22).
3. A structure of a one-way valve of a gas pressure catheter against reflux according to claim 2, characterized in that: When the bottom of the upper half of the first sealing plug (22) is in contact with the bottom of the cavity (4), the side wall of the lower half of the first sealing plug (22) is attached to the inner wall of the funnel end of the liquid inlet channel (5), and the diameter of the upper half of the first sealing plug (22) is smaller than the diameter of the cavity (4).
4. The anti-reflux air catherter unidirectional valve structure of claim 1, wherein: The end of the liquid outlet channel (7) away from the cavity (4) is in funnel shape, the second sealing plug (23) is located between the funnel ends of the liquid outlet channel (7), the sleeve (8) is arranged at the funnel end of the liquid outlet channel (7), four fixed rods (9) are uniformly and fixedly connected between the outer wall of the sleeve (8) and the inner wall of the liquid outlet channel (7), the connecting rod fixedly connected with the outer side of the second sealing plug (23) is inserted into the sleeve (8), the second spring (10) is sleeved on the connecting rod, and the two ends of the second spring (10) are fixedly connected to the second sealing plug (23) and the sleeve (8) respectively.
5. A structure of a one-way valve of a gas pressure catheter against reflux according to claim 4, characterized in that: The side wall of the second sealing plug (23) can be attached to the inner wall of the funnel end of the liquid outlet channel (7).
6. A structure of a one-way valve of a gas pressure catheter against reflux according to claim 1, characterized in that: Two pipes (1) correspond to the liquid inlet channel (5) and the liquid outlet channel (7) at both ends of the valve body (21) respectively.