Device for measuring intra-abdominal pressure through bladder
By designing a simplified measuring device frame and measuring instrument, the problems of high cost and cumbersome operation of existing devices are solved, realizing low-cost, simple and accurate intra-abdominal pressure measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGHAI PROVINCIAL PRISON ADMINISTRATION CENT HOSPITAL (QINGHAI RED CROSS HOSPITAL)
- Filing Date
- 2025-02-07
- Publication Date
- 2026-05-08
AI Technical Summary
Existing transbladder devices for measuring intra-abdominal pressure are costly and cumbersome to operate, especially the self-made tools which are complicated to set up and difficult to ensure verticality.
A transvesical intra-abdominal pressure measurement device was designed, comprising a measuring instrument and a measuring device frame. The measuring device frame consists of a base, upright, measuring tube, movable sleeve, and tightening screw, etc. Combined with a linear light emitter and braked rollers, the operation is simplified and verticality is ensured. The measuring instrument includes a urinary catheter, syringe, valve, and transparent liquid tubing, which simplifies the fixing and reading process.
It enables low-cost and convenient intra-abdominal pressure measurement, improves measurement accuracy and ease of operation, reduces dependence on verticality, and simplifies the setup process of homemade tools.
Smart Images
Figure CN224206824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical tools, and in particular to a transbladder device for measuring intra-abdominal pressure. Background Technology
[0002] The abdominal cavity is a closed space. Any increase in the volume of any organ within it beyond a certain limit can lead to intra-abdominal hypertension. Elevated intra-abdominal pressure can cause abdominal compartment syndrome, resulting in dysfunction of various organs. Therefore, monitoring intra-abdominal pressure has important clinical guiding significance for diagnosis.
[0003] Transvesical measurement of bladder pressure is currently the primary method for measuring intra-abdominal pressure due to its good correlation with intra-abdominal pressure and its advantages such as simple operation, minimal trauma, high repeatability, and accurate results. The specific method for transvesical measurement of intra-abdominal pressure is as follows: The patient lies supine, and a urinary catheter is inserted through the urethra and bladder under aseptic conditions. Two interconnected T-connectors are attached to the external end of the catheter. The three ports of the two T-connectors, not connected to the catheter, are connected to a syringe, a saline bag, and a pressure measuring device, respectively. The saline bag is suspended. After emptying the bladder, the syringe draws saline from the saline bag and injects up to 30 ml of sterile saline into the bladder. After the bladder muscles relax, the pressure is measured using the pressure measuring device.
[0004] The pressure measuring device has professional equipment, including a pressure sensor and a main unit for data processing and display. The pressure sensor connects to a T-connector, converting the pressure signal transmitted by the saline solution into an electrical signal. The main unit then converts this electrical signal into pressure data. Alternatively, the pressure measuring device can be a homemade tool, a combination of a standard medical tubing and a ruler. The ruler is set vertically, with its zero point aligned with the intersection of the patient's iliac crest and mid-axillary line. The medical tubing is connected to the T-connector and positioned along the ruler. By reading the fluid level in the tubing, the bladder pressure value can be obtained, and thus the intra-abdominal pressure can be determined.
[0005] Some hospitals lack professional pressure measuring equipment, and the cost of purchasing it is also high. Using homemade tools is more complicated, for example, fixing the ruler vertically and setting and fixing the hose along the ruler are both cumbersome, and it is not easy to ensure the verticality of the ruler. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide a low-cost and easy-to-use transbladder device for measuring intra-abdominal pressure.
[0007] The technical solution adopted to solve the above problems is: a transvesical intra-abdominal pressure measurement device includes a measuring instrument and a measuring device frame;
[0008] The measuring device frame includes a base, a vertical pole, a measuring tube, a movable sleeve, a first tightening screw, and a second tightening screw. The vertical pole is set vertically and connected to the base. The movable sleeve is fitted onto the vertical pole and cooperates with it. The first tightening screw is threadedly connected to the movable sleeve and can tighten the vertical pole. The measuring tube is set vertically and connected to the movable sleeve. The measuring tube is transparent and has height markings. The second tightening screw is threadedly connected to the upper end of the measuring tube.
[0009] The measuring device includes a urine catheter, a syringe, a first three-way valve, a liquid tubing, a rigid tube head, and a tube head cap. The urine catheter, syringe, and liquid tubing are respectively connected to the three connectors of the first three-way valve. The rigid tube head is connected to the end of the liquid tubing. The tube head cap is placed on the rigid tube head. The liquid tubing is inserted into the measuring tube from bottom to top. The liquid tubing is transparent. The first tightening screw tightens the rigid tube head, and the tube head cap protrudes from the measuring tube.
[0010] Furthermore, the measuring device frame includes a linear ray emitter, which is horizontally positioned and corresponds to the zero position of the height scale.
[0011] Furthermore, the measuring device includes a second three-way valve and a connecting pipe. The second three-way valve is located between the first three-way valve and the liquid hose. The first three-way valve, the liquid hose, and the connecting pipe are respectively connected to the three joints of the second three-way valve.
[0012] Furthermore, the measuring device frame includes a hook that connects to the top of the upright.
[0013] Furthermore, the measuring device frame includes a storage box located between the hook and the measuring tube and connected to the upright.
[0014] Furthermore, the upright has a positioning flange located below the movable sleeve, which is used to limit the extreme position of the downward movement of the movable sleeve.
[0015] Furthermore, the measuring device frame includes braked rollers located below and connected to the base.
[0016] The beneficial effects of this utility model are: when using this utility model, the measuring device frame is moved to the vicinity of the patient; the urinary catheter is inserted into the patient's urethra; and as... Figure 1As shown, the present invention is set up with the liquid tubing inserted into the measuring tube from bottom to top, and the second tightening screw securing the rigid tube head. The height of the measuring tube is adjusted so that the zero point of the height scale aligns with a specific location on the patient's body (the intersection of the iliac crest and the mid-axillary line). Following existing techniques, pressure is measured. After emptying the bladder, saline solution is drawn into the syringe and injected into the bladder; during this process, the liquid tubing is not connected to the urinary catheter. Subsequently, the urinary catheter is connected to the liquid tubing, and intra-abdominal pressure (intra-bladder pressure) causes saline solution to enter the liquid tubing. The liquid level in the tubing, i.e., the height scale aligned with the liquid level, represents the intra-abdominal pressure.
[0017] Compared with existing professional pressure measuring equipment, this utility model has a simple structure and low cost. Compared with existing medical field-set hoses and rulers, the measuring tube of this utility model does not require field fixation and is naturally in a vertical state, which is simple to operate and helps to improve measurement accuracy. The liquid hose is inserted into the measuring tube from bottom to top and the rigid tube head is tightened by the second tightening screw, and the liquid hose is fixed. The operation is also simpler. Attached Figure Description
[0018] Figure 1 This is a structural diagram of a transvesical intra-abdominal pressure measurement device;
[0019] Figure 2 This is a structural diagram of the measuring instrument;
[0020] Figure 3 This is a structural diagram of the measuring device frame;
[0021] Figure 4 This is a partial enlarged view of the measuring device frame;
[0022] The components in the diagram are labeled as follows: measuring device 1, urine catheter 11, first three-way valve 12, syringe 13, second three-way valve 14, liquid hose 15, connecting tube 16, rigid tube head 17, tube head cap 18, measuring device frame 2, base 21, first tightening screw 22, moving sleeve 23, measuring tube 24, height scale 241, storage box 25, upright 26, positioning flange 261, hook 27, linear light emitter 28, and second tightening screw 29. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0024] The transbladder intra-abdominal pressure measurement device includes a measuring device 1 and a measuring device frame 2. The measuring device frame 2 includes a base 21, a vertical rod 26, a measuring tube 24, a movable sleeve 23, a first tightening screw 22, and a second tightening screw 29. The vertical rod 26 is vertically arranged and connected to the base 21. The movable sleeve 23 is fitted onto the vertical rod 26 and mates with it. The first tightening screw 22 is threadedly connected to the movable sleeve 23 and can tighten the vertical rod 26. The measuring tube 24 is vertically arranged and connected to the movable sleeve 23. The measuring tube 24 is transparent and has a height scale 241 on it. The second tightening screw... 29 is threaded to the upper end of the measuring tube 24; the measuring device 1 includes a urine catheter 11, a syringe 13, a first three-way valve 12, a liquid hose 15, a rigid tube head 17, and a tube head cap 18. The urine catheter 11, syringe 13, and liquid hose 15 are respectively connected to the three connectors of the first three-way valve 12. The rigid tube head 17 is connected to the end of the liquid hose 15. The tube head cap 18 covers the rigid tube head 17. The liquid hose 15 is inserted into the measuring tube 24 from bottom to top. The liquid hose 15 is transparent. The second tightening screw 29 tightens the rigid tube head 17. The tube head cap 18 is exposed outside the measuring tube 24.
[0025] In use, the measuring device frame is moved near the patient; the urinary catheter 11 is inserted into the patient's urethra; and as follows... Figure 1 As shown, the present invention is set up such that the liquid tubing 15 is inserted into the measuring tube 24 from bottom to top, and the second tightening screw 29 tightens the rigid tube head 17. The height of the measuring tube 24 is adjusted so that the zero point of the height scale 241 is aligned with a specific position on the patient's body (the intersection of the iliac crest and the mid-axillary line). Then, referring to the prior art, pressure measurement is performed. After the urine in the bladder is emptied, the syringe 24 draws in physiological saline and injects it into the bladder. During this process, the liquid tubing 15 is not connected to the urinary catheter 11. Subsequently, the urinary catheter 11 is connected to the liquid tubing 15. The intra-abdominal pressure (intra-bladder pressure) causes physiological saline to enter the liquid tubing 15. The liquid level in the liquid tubing 15, i.e., the height scale 241 where the liquid level is aligned, represents the intra-abdominal pressure.
[0026] The urinary catheter 11 and syringe 13 are both existing technology products. The first three-way valve 12 is also existing technology. This valve is used to adjust the connection between the urinary catheter 11, syringe 13, and liquid tubing 15. When saline is injected into the bladder, the valve is adjusted so that the urinary catheter 11 is connected to the syringe 13; subsequently, it is adjusted so that the urinary catheter 11 is connected to the liquid tubing 15. The liquid tubing 15 is made of the same material as existing medical fluid tubing (e.g., infusion tubing). The rigid tube head 17 is made of rigid plastic and is used to secure the liquid tubing 15. The first tightening screw 22 tightens the rigid tube head 17 without causing the tubing to be compressed and closed. The tube head cap 18 is used to seal the liquid tubing 15. During measurement, the tube head cap 18 should be removed to prevent the liquid tubing 15 from closing; after measurement, the tube head cap 18 should be replaced, and the liquid tubing 15 should be removed from the measuring tube 24 to prevent saline leakage.
[0027] As mentioned earlier, the zero point of the height scale 241 is aligned with a specific location on the patient's body, namely the intersection of the iliac crest and the mid-axillary line. Therefore, the height of the measuring tube 24 needs to be adjusted. Specifically, this involves loosening the first tightening screw 22 to allow the moving sleeve 23 to move up and down, and then tightening the first tightening screw 22 after adjustment. To more conveniently and accurately align the zero point of the height scale 241 with the intersection of the patient's iliac crest and the mid-axillary line, this invention preferably includes a linear light emitter 28, which is horizontally positioned and corresponds to the zero point of the height scale 241. The linear light emitter 28 utilizes existing technology, such as a laser pointer or its laser head. When the linear light emitter 28 is activated, the light emitted by it is aligned with the intersection of the patient's iliac crest and the mid-axillary line, thus aligning the zero point of the height scale 241 with this point.
[0028] Furthermore, the preferred measuring device 1 of this utility model includes a second three-way valve 14 and a connecting pipe 16. The second three-way valve 14 is located between the first three-way valve 12 and the liquid tubing 15. The first three-way valve 12, the liquid tubing 15, and the connecting pipe 16 are respectively connected to the three connectors of the second three-way valve 14. The syringe 13 can be pre-filled with saline solution, and with this configuration, the syringe 13 can be filled with saline solution on-site. Specifically, the saline bag is hung high, the connecting pipe 16 is connected to the hung saline bag, and the first three-way valve 12 and the second three-way valve 14 are adjusted to connect the liquid bag with the syringe 13, thereby allowing the saline solution to be drawn in.
[0029] To facilitate the hanging of saline solution, the measuring device frame 2 preferably includes a hook 27, which is connected to the top of the upright 26. Thus, the measuring device frame 2 can be used to hang saline bags.
[0030] Furthermore, the preferred measuring device holder 2 includes a storage box 25, which is located between the hook 27 and the measuring tube 24 and connected to the upright 26. The storage box 25 can hold various items for transvesical intra-abdominal pressure measurement, such as the measuring device 1, facilitating the carrying of these items.
[0031] Furthermore, preferably, the upright 26 has a positioning flange 261 located below the movable sleeve 23. The positioning flange 261 is used to limit the extreme position of the downward movement of the movable sleeve 23. This arrangement can prevent the movable sleeve 23 and the measuring tube 24 from moving downwards excessively.
[0032] To facilitate the movement of this utility model, the measuring device frame 2 preferably includes a roller with a brake, which is located below the base 21 and connected to the base 21.
Claims
1. A transbladder device for measuring intra-abdominal pressure, characterized in that: Includes a measuring instrument (1) and a measuring device frame (2); The measuring device frame (2) includes a base (21), a vertical rod (26), a measuring tube (24), a movable sleeve (23), a first tightening screw (22), and a second tightening screw (29). The vertical rod (26) is vertically arranged and connected to the base (21). The movable sleeve (23) is fitted onto the vertical rod (26) and cooperates with the vertical rod (26). The first tightening screw (22) is threadedly connected to the movable sleeve (23) and can tighten the vertical rod (26). The measuring tube (24) is vertically arranged and connected to the movable sleeve (23). The measuring tube (24) is transparent and has a height scale (241) on it. The second tightening screw (29) is threadedly connected to the upper end of the measuring tube (24). The measuring device (1) includes a urine catheter (11), a syringe (13), a first three-way valve (12), a liquid tubing (15), a rigid tube head (17), and a tube head cap (18). The urine catheter (11), syringe (13), and liquid tubing (15) are respectively connected to the three connectors of the first three-way valve (12). The rigid tube head (17) is connected to the end of the liquid tubing (15). The tube head cap (18) covers the rigid tube head (17). The liquid tubing (15) is inserted into the measuring tube (24) from bottom to top. The liquid tubing (15) is transparent. The second tightening screw (29) tightens the rigid tube head (17). The tube head cap (18) protrudes from the measuring tube (24).
2. The transvesical intra-abdominal pressure measuring device according to claim 1, characterized in that: The measuring device frame (2) includes a linear light emitter (28), which is set horizontally and corresponds to the zero position of the height scale (241).
3. The transvesical intra-abdominal pressure measuring device according to claim 2, characterized in that: The measuring device (1) includes a second three-way valve (14) and a connecting pipe (16). The second three-way valve (14) is located between the first three-way valve (12) and the liquid hose (15). The first three-way valve (12), the liquid hose (15) and the connecting pipe (16) are respectively connected to the three joints of the second three-way valve (14).
4. The transvesical intra-abdominal pressure measuring device according to claim 3, characterized in that: The measuring device frame (2) includes a hook (27) which is connected to the top of the upright (26).
5. The transvesical intra-abdominal pressure measuring device according to claim 4, characterized in that: The measuring device frame (2) includes a storage box (25), which is located between the hook (27) and the measuring tube (24) and connected to the upright (26).
6. The transvesical intra-abdominal pressure measuring device according to claim 5, characterized in that: The upright (26) has a positioning flange (261) located below the movable sleeve (23), and the positioning flange (261) is used to limit the extreme position of the downward movement of the movable sleeve (23).
7. The transvesical intra-abdominal pressure measuring device according to claim 6, characterized in that: The measuring device frame (2) includes a braked roller located below and connected to the base (21).