Pressure conduction unit and pressure monitoring device

Abstract

The utility model discloses a pressure conduction unit and a pressure monitoring device. The pressure conduction unit, the pressure monitoring unit and a host are included; the pressure monitoring unit and the host are connected into a whole, and the pressure conduction unit and the host are detachably connected in a matched mode. The pressure conduction unit comprises a liquid inlet pipeline, a liquid outlet pipeline and a pressure transmission part, and a pressure transmission opening of a pressure transmission cavity of the pressure transmission part is covered with a flexible pressure transmission film; the pressure monitoring unit comprises a pressure sensing cavity and a pressure sensor connected with the pressure sensing cavity into a whole, and a pressure sensing opening of the pressure sensing cavity is covered with a flexible pressure sensing film; a hollow hard first expansion part is arranged on the liquid inlet pipeline, a hollow hard second expansion part is arranged on the liquid outlet pipeline, the first expansion part is connected with a pressure transmission cavity of the pressure transmission component through a tubular first middle section, and the pressure transmission cavity of the pressure transmission component is connected with the second expansion part through a tubular second middle section; at least one part of the first middle section and at least one part of the second middle section are pipe bodies easy to deform, and the first middle section and the second middle section enable the pressure transmission component to have a free stroke.

Description

Technical Field

[0001] The utility model relates to a pressure transmission unit and a pressure monitoring device, belonging to the technical field of medical equipment. Background Art

[0002] Indwelling catheterization or intermittent catheterization is a basic medical care method. Monitoring bladder pressure during catheterization has significant clinical significance. Existing urodynamic monitoring equipment is large in size and often needs to be suspended on a bracket for use, which is not conducive to routine activities such as turning over and patting the back of patients. When the patient's body position changes, it is easy to pull the pressure sensor through the pipeline, which may cause loosening between the pressure sensor and the host, affecting the accuracy of pressure monitoring; the measurement of abdominal pressure during indwelling catheterization of critically ill patients often requires the use of an open measuring tube or the insertion of a pressure sensor through abdominal puncture, which has a high risk of infection; there is no popular pressure-guided training model that is closest to the physiological mechanism for bladder function training during indwelling catheterization, and most of them rely on time-dependent urine drainage methods; there is no unified clinical guideline for when to remove the catheter in patients with indwelling catheterization, and there is a lack of individualized judgment criteria. The longer the catheter is in place, the greater the chance and severity of urinary tract infection in the patient.

[0003] In order to solve the above problems, there is an urgent need for a non-invasive, stable and reliable portable pressure transmission unit and monitoring device in clinical practice. Summary of the invention

[0004] The purpose of the utility model is to provide a pressure transmission unit and a pressure monitoring device, which can not only monitor the bladder pressure and abdominal pressure during the indwelling catheterization process, but also provide a non-invasive bladder pressure and abdominal pressure monitoring solution for patients, and assist patients in bladder training; by monitoring the positive feedback of the bladder detrusor muscle during urination, the individual timing of catheter removal can be guided; and the accurate transmission of pressure can be ensured during activities such as turning over and patting the back of the patient.

[0005] The purpose of the utility model is achieved in this way:

[0006] A pressure transmission unit comprises: an inlet pipeline, an outlet pipeline and a pressure transmission component located between the inlet pipeline and the outlet pipeline, the pressure transmission component is provided with a pressure transmission cavity, the pressure transmission port of the pressure transmission cavity is covered by a flexible pressure transmission film, and also comprises an inlet valve and an outlet valve respectively arranged on the inlet pipeline and the outlet pipeline; the inlet pipeline is provided with a hollow hard first bulge, the outlet pipeline is provided with a hollow hard second bulge, the inlet valve and the outlet valve are respectively embedded in the first bulge and the second bulge and can rotate therein; when the inlet valve is opened, the inner cavity of the inlet valve is connected with the inner cavity of the inlet pipeline, otherwise it is blocked; when the outlet valve is opened, The inner cavity of the liquid outlet valve is connected with the inner cavity of the liquid outlet pipeline, and vice versa; the pressure transmission component is located in the area between the first expanded part and the second expanded part; the first expanded part and the pressure transmission cavity of the pressure transmission component and the pressure transmission cavity of the pressure transmission component and the second expanded part are respectively connected through the first tubular middle section and the second tubular middle section, and at least a part of the first middle section and the second middle section is a tube body that is easy to deform; the first middle section and the second middle section allow the pressure transmission component located between the first expanded part and the second expanded part to have a free stroke; the liquid inlet pipeline or the liquid outlet pipeline is also provided with an atmospheric communication port that can be communicated with the inner cavity of the liquid inlet valve or the inner cavity of the liquid outlet valve.

[0007] The liquid inlet pipeline is the passage for urine to enter the pressure transmission chamber, and the liquid outlet pipeline is the passage for urine to flow out of the pressure transmission chamber; the main bodies of the liquid inlet pipeline and the liquid outlet pipeline can be hard or flexible pipes, and the length can be tens of centimeters or only a few millimeters, directly or indirectly connected to the catheter; when the liquid inlet valve is closed, urine cannot flow into the pressure transmission chamber; when the liquid outlet valve is closed, urine cannot flow out of the pressure transmission chamber.

[0008] The atmosphere communication port is arranged on the first expanded part and / or the second expanded part, and the atmosphere communication port is connected to or isolated from the inner cavity of the liquid inlet valve and / or the inner cavity of the liquid outlet valve due to the different rotation positions of the liquid inlet valve and / or the liquid outlet valve; the atmosphere communication port is covered with a breathable and liquid-tight film; the breathable and liquid-tight film can be made of polymer composite materials such as polyethylene and polytetrafluoroethylene, and a ventilation protective cap can be added to the outside of the film to avoid possible damage during use.

[0009] Furthermore, it also includes at least one sampling cavity for extracting urine, the sampling cavity is located between the first expanded part of the liquid inlet pipeline and the pressure transmission cavity, the sampling cavity opening faces one side of the bridge body, and the sampling cavity opening is closed by an elastic body that can be re-sealed after puncture.

[0010] A pressure monitoring device also includes a pressure monitoring unit and a host; the pressure monitoring unit is connected to the host shell as a whole, and the pressure transmission unit is detachably connected to the host shell; that is, a host and a pressure monitoring unit thereon can be used in conjunction with multiple pressure transmission units in succession, the pressure transmission unit is a disposable consumable, and the host and the pressure monitoring unit thereon are reusable; the pressure monitoring unit includes a pressure sensing chamber and a pressure sensor connected to the pressure sensing chamber as a whole, the pressure sensing port of the pressure sensing chamber is covered by a flexible pressure sensing film, the pressure sensor monitors the pressure change of the pressure sensing chamber and transmits the pressure change signal to the central processor of the host, the host shell is provided with a first accommodating space for accommodating a first expanded part and a second accommodating space for accommodating a second expanded part; the host shell is provided with a liquid inlet regulating knob protruding into the first accommodating space and a liquid outlet regulating knob protruding into the second accommodating space, the liquid inlet regulating knob and the liquid outlet regulating knob are respectively linked and coordinated with the liquid inlet valve in the first expanded part and the liquid outlet valve in the second expanded part; the pressure sensing film of the pressure sensing chamber is located in the area between the first accommodating space and the second accommodating space.

[0011] The pressure monitoring unit is connected to the host as a whole, and the pressure monitoring unit and the host can be fixedly connected, or can be movably connected within a certain range. When the pressure monitoring unit is movable relative to the host within a certain range, the position movement of the host and / or the liquid inlet pipeline and / or the liquid outlet pipeline will not interfere with the stable contact between the pressure transmission port of the pressure transmission chamber of the pressure transmission unit and the pressure sensing port of the pressure sensing chamber of the pressure monitoring unit, thereby ensuring accurate measurement of pressure.

[0012] Furthermore, the first middle section and the second middle section allow the pressure transmitting component located between the first expanded portion and the second expanded portion to have a free travel, which facilitates the locking body to drive the pressure transmitting cavity to move toward the pressure sensing cavity and fully contact it, while avoiding the position movement of the liquid inlet pipeline and / or the liquid outlet pipeline to interfere with the stable contact between the pressure transmitting port of the pressure transmitting cavity and the pressure sensing port of the pressure sensing cavity.

[0013] The free stroke refers to the premise that the positions of the first expansion part, the bridge body and the second expansion part remain unchanged, and the pressure transmission component can be displaced toward or away from the pressure sensing port of the pressure sensing cavity within a certain range due to the existence of the easily deformable first middle section and the second middle section, without being constrained by the hard first expansion part, the bridge body and the second expansion part, which is conducive to driving the pressure transmission port through the locking body to accurately and stably fully contact with the pressure sensing port of the pressure sensing cavity; when in use, when external force acts on the first expansion part, the bridge body and the second expansion part directly or through the liquid inlet pipeline and / or the liquid outlet pipeline, due to the buffering of the easily deformable first middle section and the second middle section, the external force is difficult to be transmitted to the pressure transmission component, thereby It is difficult to interfere with the full contact between the pressure transmission film on the pressure transmission port and the pressure sensing film on the pressure sensing port, thereby ensuring the accuracy and reliability of pressure transmission and perception.

[0014] It also includes a locking body, which can be located on the pressure transmission component or on the pressure monitoring unit. The locking body is used to drive the pressure transmission chamber and the pressure sensing chamber to closely connect, that is, to drive the flexible pressure transmission film to stably contact the flexible pressure sensing film; the locking body can be a locking buckle, a locking knob, or a magnetically attracted locking body. The locking body is used in conjunction with the corresponding structure on the host to ensure that the pressure transmission film of the pressure transmission chamber and the pressure sensing film of the pressure sensing chamber are stably fitted and contacted.

[0015] The first accommodating space and the second accommodating space on one side of the main body shell are in the shape of a gap with openings on three sides. The first accommodating space is provided with a first conformal groove with an opening facing outward for facilitating the insertion of the inlet valve handle and a first buckle for appropriately restraining the first enlarged part; the second accommodating space is provided with a second conformal groove with an opening facing outward for facilitating the insertion of the outlet valve handle and a second buckle for appropriately restraining the second enlarged part; the inlet valve handle is conformably embedded in the groove on the inner side of the inlet regulating knob through the first conformal groove; the outlet valve handle is conformably embedded in the groove on the inner side of the outlet regulating knob through the second conformal groove; the first buckle and the second buckle with a certain elasticity can be buckled into the corresponding positions of the lower edges of the first enlarged part and the second enlarged part respectively, so that the first enlarged part and the second enlarged part are not easy to escape from the first accommodating space and the second accommodating space of the main body.

[0016] The first expanded part and the second expanded part with an arc-shaped internal contour are sealed to the outside and contain a circular liquid inlet valve and a liquid outlet valve. The liquid inlet valve is embedded in the first expanded part. The liquid inlet valve handle is rotated to cause the liquid inlet valve to rotate synchronously in the first expanded part. By rotating to different positions, the connection between the inner cavity of the liquid inlet valve and the inner cavity of the liquid inlet pipeline can be regulated; the liquid outlet valve is embedded in the second expanded part. The liquid outlet valve handle is rotated to cause the liquid outlet valve to rotate synchronously in the second expanded part. By rotating to different positions, the connection between the inner cavity of the liquid outlet valve and the inner cavity of the liquid outlet pipeline can be regulated; when the inlet valve is opened, urine can enter the pressure transmission chamber, and when the inlet valve is closed, urine cannot enter the pressure transmission chamber; when the outlet valve is opened, urine can flow out of the pressure transmission chamber, and when the outlet valve is closed, urine cannot flow out of the pressure transmission chamber.

[0017] It also includes a hard bridging body, which connects the first expanded part on the liquid inlet pipeline and the second expanded part on the liquid outlet pipeline of the pressure transmission unit as a whole, so that the position between the first expanded part and the second expanded part is stable and can be displaced synchronously; the main body of the bridging body is continuous and flat or is provided with one of a puncture needle passing hole and a puncture needle passing notch.

[0018] The bridging body is in the form of a sheet or a strip, and can be integrally molded with the first expansion part and the second expansion part, or it can be an independent component that is tightly buckled, bonded or welded to the first expansion part and the second expansion part; the bridging body is easy for the operator to hold and use, and can drive the pressure transmission unit to quickly and accurately dock with the main engine, so that the liquid inlet adjustment knob and the liquid outlet adjustment knob are respectively linked with the liquid inlet valve in the first expansion part and the liquid outlet valve in the second expansion part, that is, the sheet-shaped liquid inlet valve handle is conformably embedded in the groove on the inner side of the liquid inlet adjustment knob, and the sheet-shaped liquid outlet valve handle is conformably embedded in the groove on the inner side of the liquid outlet adjustment knob; when the liquid inlet adjustment knob and the liquid outlet adjustment knob are driven by fingers or a motor to rotate, the liquid inlet valve and the liquid outlet valve are synchronously linked with the liquid inlet adjustment knob and the liquid outlet adjustment knob; of course, under the same idea, valve slots can be set on the liquid inlet valve and the liquid outlet valve, and protruding pieces are set on the inner sides of the liquid inlet adjustment knob and the liquid outlet adjustment knob, and the protruding pieces are embedded in the valve slots to achieve synchronous linkage.

[0019] The pressure sensing cavity of the pressure monitoring unit is filled with a flowing or non-flowing pressure transmitting body; the pressure transmitting body can be gas, oily liquid, gel such as zero-degree silicone gel, etc.

[0020] Furthermore, the pressure transmission unit is provided with an electronic tag for determining the correspondence between the pressure transmission unit and the host, and / or recording the usage time and the number of times the pressure transmission unit is used; the host is provided with an identification module of the electronic tag.

[0021] A specific structure, the pressure-transmitting film is horizontal or convex when not in contact with an external object, and the pressure-sensitive film is horizontal or convex when not in contact with the pressure-transmitting film; hundreds of comparison tests with the concave film show that the pressure-transmitting film and / or pressure-sensitive film that are pre-convex or horizontal have more stable pressure transmission and pressure sensing performance and higher accuracy.

[0022] The host shell is provided with a left movable door and a right movable door that are engaged by snap-fitting, and the left movable door and / or the right movable door are provided with a finger buckle portion; the left movable door and the right movable door are opened to both sides at the same time, fully exposing the space area between the first accommodating space and the second accommodating space of the main shell, which is conducive to holding the bridge body to insert the pressure transmission unit into the host, thereby realizing a quick installation operation.

[0023] A display screen and buttons are provided on the main body shell. The central processing unit in the main body receives and processes the pressure change signal monitored by the pressure sensor on the pressure monitoring unit, and feeds back the corresponding value to the display screen. The button can be a protruding key body or a button icon on the touch screen. The button is used to retrieve information and input instructions to control various functions of the bladder pressure monitoring system including opening, closing, and mode switching.

[0024] Furthermore, it also includes a driving motor, which directly or indirectly controls the opening or closing of the liquid inlet valve and / or the liquid outlet valve.

[0025] The indirect control by the driving motor means that the driving motor indirectly controls the opening or closing of the liquid inlet valve and the liquid outlet valve by driving the liquid inlet regulating knob and the liquid outlet regulating knob which are linked with the liquid inlet valve and the liquid outlet valve.

[0026] The beneficial effects of the utility model are:

[0027] 1. The pressure transmission unit of the utility model is detachably connected to the main machine. The hard bridge body drives the hard first expansion part on the liquid inlet pipeline and the hard second expansion part on the liquid outlet pipeline to be accurately embedded in the first accommodation space and the second accommodation space of the main machine shell at the same time. At the same time, the liquid inlet adjustment knob and the liquid outlet adjustment knob on the main machine are respectively linked with the liquid inlet valve in the first expansion part and the liquid outlet valve in the second expansion part. The main machine can be reused multiple times. The pressure transmission unit is used as a disposable consumable, with accurate pressure measurement, low use cost and convenient operation.

[0028] 2. The liquid inlet pipeline and the pressure transmission component of the pressure transmission unit and the pressure transmission component and the liquid outlet pipeline are connected respectively through the middle section which is easy to deform. The first middle section and the second middle section allow the pressure transmission component located between the first expanded part and the second expanded part to have a free stroke, so that the locking body drives the pressure transmission cavity to move toward the pressure sensing cavity and fully contact with it, and at the same time avoids the position movement of the liquid inlet pipeline and / or the liquid outlet pipeline from interfering with the stable contact between the pressure transmission port of the pressure transmission cavity and the pressure sensing port of the pressure sensing cavity. When in use, when external force acts on the first expanded part, the bridging body and the second expanded part directly or through the liquid inlet pipeline and / or the liquid outlet pipeline, due to the buffering of the first middle section and the second middle section which are easy to deform, the external force is difficult to be fully transmitted to the pressure transmission component, thereby making it difficult to interfere with the full contact between the pressure transmission film on the pressure transmission port and the pressure sensing film on the pressure sensing port, thereby ensuring the reliability and stability of pressure transmission and perception.

[0029] 3. The atmospheric communication port of the pressure transmission unit is arranged on the first expanded part and / or the second expanded part. The atmospheric communication port is connected to or isolated from the inner cavity of the liquid inlet valve and / or the inner cavity of the liquid outlet valve due to the different rotation positions of the liquid inlet valve and / or the liquid outlet valve, so that the pressure zeroing is carried out in a state isolated from the outside, and the pressure zeroing operation of the device is safer and more convenient.

[0030] 4. The pressure monitoring device realizes non-invasive monitoring of bladder pressure. It monitors bladder pressure under physiological conditions of natural urine filling, which is used to determine the timing of each urination of patients with indwelling catheterization and judge bladder function. Long-term indwelling catheterization in patients is prone to bladder atrophy, and they need to be provided with individualized bladder function training. The device closes the liquid outlet valve during bladder pressure monitoring. When the set bladder function pressure value is reached, the liquid outlet valve is opened to discharge urine, simulating the physiological urination process to the greatest extent. Repeating the training many times will help the patient recover bladder function.

[0031] 5. Non-invasive monitoring of abdominal pressure. When the amount of urine stored in the bladder is small, the bladder pressure is equivalent to the abdominal pressure. The abdominal pressure can be monitored after each urine voiding, which provides more information for judging the comprehensive changes in the patient's condition, judging the occurrence and development of abdominal space syndrome and the effect evaluation after treatment, and ensuring the safety of anesthesia during surgery.

[0032] 6. Determination of the positive feedback ability of the bladder detrusor muscle: after the pressure in the bladder reaches the set threshold for urination, the outlet valve is opened to allow urine to be discharged. After urination continues for several seconds or tens of seconds, the outlet valve is quickly closed and the changes in bladder pressure within 30 seconds are recorded. The maximum bladder pressure value is the maximum contraction force of the bladder detrusor muscle during the positive feedback urination process, which can be used to determine whether the patient's bladder function has recovered and provide individualized clinical basis for whether the indwelling catheter can be removed. Removing the catheter as soon as possible can significantly reduce the incidence of urinary tract infection.

[0033] 7. The sampling cavity on the pressure transmission unit can extract urine samples from patients at any time for observation, testing, urine bacteria culture, etc. during the patient's bladder pressure monitoring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings which do not limit the present invention are as follows:

[0035] Figure 1A : Schematic diagram of separation of pressure transmission unit and host in Example 1

[0036] Figure 1B : Schematic diagram of the separation of the pressure transmission unit and the main machine from another angle in Example 1

[0037] Figure 1C : Schematic diagram of the pressure transmission unit and the main machine after assembly in Example 1

[0038] Figure 1D : Schematic diagram of separation of pressure transmission unit and pressure monitoring unit in Example 1

[0039] Figure 1E : Schematic diagram of a state of the pressure transmission unit in Example 1

[0040] Figure 1F : Schematic diagram of another state of the pressure transmission unit in Example 1

[0041] Figure 1G : Schematic diagram of another structure of the pressure transmission unit in Example 1

[0042] Figure 1H : Schematic diagram of another structure of the pressure transmission unit in Example 1

[0043] Fig. 1I : Example 1 Schematic diagram of a connection state of the utility model

[0044] Figure 1J : Example 1 Schematic diagram of a use state of the utility model

[0045] Figure 1K :Example 1 Front view of the utility model

[0046] Figure 1L : Example 1 Schematic diagram of a usage mode of the utility model

[0047] Figure 1M : Embodiment 1 Schematic diagram of another use mode of the utility model

[0048] Figure 1N : Embodiment 1 Schematic diagram of another usage mode of the utility model

[0049] Fig.1O : Cross-sectional view of the pressure transmission unit and the pressure monitoring unit separated in Example 1

[0050] Figure 2A : Schematic diagram of the pressure transmission unit of embodiment 2 provided with a puncture needle through hole

[0051] Figure 2B : Cross-sectional view of the pressure transmission unit of embodiment 2 provided with a puncture needle passage hole

[0052] Figure 2C : Schematic diagram of the pressure transmission unit provided with a puncture needle notch in Example 2

[0053] Figure 3A : Schematic diagram of the pressure transmission unit with an electronic tag in Example 3

[0054] Figure 3B : Schematic diagram of another structure of Example 3 DETAILED DESCRIPTION

[0055] Embodiment 1:

[0056] like Figures 1A-1DAs shown, a pressure transmission unit and a pressure monitoring device include: a pressure transmission unit 1 and a host 3; the host 3 has a built-in pressure monitoring unit 2, the pressure monitoring unit 2 is fixedly connected to the housing 31 of the host 3, and the pressure transmission unit 1 and the host 3 are detachably connected; a display screen 32 and a button 33 are provided on the housing 31 of the host, and the pressure change signal monitored by the pressure sensor 21 in the pressure monitoring unit 2 is transmitted to the central processor C of the host 3 for processing, and the corresponding value is transmitted to the display screen 32, the button 33 can be a protruding key body or a button icon on the touch screen, and the button 33 is used to retrieve information and input instructions, and control various functions of the bladder pressure monitoring system including opening, closing, and mode switching; it also includes a host switch button 331 and a power supply B, pressing the host switch button 331 for a few seconds can control the opening or closing of the device, and the power supply B provides power energy for the device, and the power supply B in this embodiment is a rechargeable battery; Figure 1A FIG. 4 shows the pressure transmission unit 1 and the main unit 3 in an unassembled state. Figure 1C 3 shows the state of normal use after the pressure transmission unit 1 and the host 3 are assembled, that is, the pressure transmission unit 1 is used as a semi-disposable consumable, and the host 3 is provided with a detection module 34 for detecting whether the pressure transmission unit 1 is properly installed.

[0057] In this embodiment, the host 3 is less than 14 cm in length, less than 9.5 cm in width, and less than 4 cm in height. The size of the pressure transmission unit 1 is further smaller than that of the host 3. The weight of the host 3 combined with the pressure transmission unit 1 is less than 200 g, which is easy to carry and does not affect the patient's turning over, patting the back, etc. The patient can also carry the host 3 out of the ward for activities.

[0058] like Figure 1B , 1DAs shown, the pressure transmission unit 1 includes a liquid inlet pipeline 11, a liquid outlet pipeline 12 and a pressure transmission component 13. The main body of the pressure transmission component 13 is in a hollow block shape, and the space for accommodating urine is a pressure transmission chamber 130. The pressure transmission port 1300 of the pressure transmission chamber 130 is covered by a flexible pressure transmission film 133. The flexible pressure transmission film 133 consists of a sealing connection area 1331 and a pressure transmission area 1332. The pressure transmission port 1300 corresponds to the pressure transmission area 1332 at least partially, so that the urine pressure in the pressure transmission chamber 130 is transmitted to the pressure transmission area 1332 of the pressure transmission film 133 through the pressure transmission port 1300. The first bulge 115 and the second bulge 125 are respectively provided on the liquid inlet pipeline 11 and the liquid outlet pipeline 12. The first bulge 115 and the second bulge 125 are respectively provided on the liquid inlet pipeline 11 and the liquid outlet pipeline 12. 25 respectively accommodates the inlet valve 113 and the outlet valve 123, which are used to control the circulation or cutoff of the liquid, and the first expanded part 115 and the inlet valve 113, and the second expanded part 125 and the outlet valve 123 are in liquid-tight contact, that is, the liquid cannot flow out from the gap between the two; the inlet pipeline 11 is the passage for urine to enter the pressure transmission chamber 130, and the outlet pipeline 12 is the passage for urine to flow out of the pressure transmission chamber 130; the main bodies of the inlet pipeline 11 and the outlet pipeline 12 can be hard or flexible pipes, and the length can be tens of centimeters or only a few millimeters, which are directly or indirectly connected to the urinary catheter; when the inlet valve 113 is closed, urine cannot flow into the pressure transmission chamber 130; when the outlet valve 123 is closed, urine cannot flow out of the pressure transmission chamber 130.

[0059] An atmospheric communication port 10 is provided on the liquid inlet pipeline 11 or the liquid outlet pipeline 12. In the present embodiment, the atmospheric communication port 10 is provided on the first expanded portion 115 of the liquid inlet pipeline 11. The liquid inlet valve 113 can control the connection or blocking of the atmospheric communication port 10 with the pressure transmission chamber 130. The atmospheric communication port 10 is covered by a breathable and liquid-impermeable film 101 to prevent liquid from flowing out of the atmospheric communication port 10. The atmospheric communication port 10 can be connected with the inner cavity 1130 of the liquid inlet valve or the inner cavity 1230 of the liquid outlet valve.

[0060] In this embodiment, the atmosphere communication port 10 is disposed on the first expanded portion 115. The atmosphere communication port 10 is connected to or isolated from the liquid inlet valve inner cavity 1130 and / or the liquid outlet valve inner cavity 1230 due to different rotation positions of the liquid inlet valve 113. Figure 1L The atmosphere communication port 10 is isolated from the inner cavity 1130 of the liquid inlet valve. Figure 1M The atmosphere communication port 10 is connected to the inner cavity 1130 of the liquid inlet valve; the atmosphere communication port 10 is covered with a breathable and liquid-tight film 101; the breathable and liquid-tight film 101 can be made of polymer composite materials such as polyethylene and polytetrafluoroethylene, and a ventilated protective cap (not shown) can be added to the outside of the film 101 to avoid possible damage during use.

[0061] The pressure monitoring unit 2 includes a pressure sensing chamber 20 and a pressure sensor 21 connected to the pressure sensing chamber 20. The pressure sensing chamber 20 in the pressure monitoring unit 2 connected to the pressure sensor 21 is filled with a flowing or non-flowing pressure transmitting body, and the pressure transmitting body can be a gas, an oily liquid, a gel such as a zero-degree silicone gel, etc. The pressure sensor 21 can be a separate pressure sensor, or a temperature and pressure sensor, that is, the pressure sensor 21 has the function of sensing temperature changes, and can perform temperature measurement or temperature compensation when in use; it is also possible to set a separate temperature sensor while setting a separate pressure sensor 21 to monitor urine temperature changes or perform temperature compensation, etc. The pressure sensing port 200 of the pressure sensing chamber 20 is covered by a flexible pressure-sensitive film 201 covers, the flexible pressure-sensitive film 201 consists of a sealing area 2011 and a pressure-sensitive area 2012, the pressure-sensitive port 200 corresponds to the pressure-sensitive area 2012 at least in part, and the pressure-transmitting area 1332 corresponds to the pressure-sensitive area 2012 at least in part when assembled and used, so that the pressure change signal of the liquid is transmitted to the pressure sensor 21 through the pressure-transmitting area 1332, the pressure-sensitive area 2012, and the pressure-sensitive cavity 20, and the pressure sensor 21 monitors the pressure change of the pressure-sensitive cavity 20 and transmits the pressure change signal to the central processor C of the host 3, at least the pressure-sensitive element of the pressure sensor 21 is in direct contact with the pressure-sensitive cavity 20, and of course the pressure sensor 21 of the utility model can be any sensing module that can sense pressure changes; Figure 1B The pressure transmission unit 1 and the pressure monitoring unit 2 are separated, and the pressure monitoring unit 2 is connected to the host 3 as a whole. Figure 1D Only the pressure transmission unit 1 and the pressure monitoring unit 2 in the separated state are shown, and the host 3 is not shown. Figure 1D The pressure transmission port 1300 of the middle pressure transmission cavity 130 is not sealed and covered by the pressure transmission film 133 , and the pressure sensing port 200 of the pressure sensing cavity 20 is not covered by the pressure sensing film 201 .

[0062] like Figure 1B , 1O , a knob-shaped locking body 14 is also shown for driving the displacement of the pressure transmission chamber 130 and ensuring that the pressure transmission area 1332 of the pressure transmission film 133 of the pressure transmission unit 1 and the pressure sensing area 2012 of the pressure sensing film 201 of the pressure monitoring unit 2 are in at least partial close contact or in full contact during use; in this embodiment, the locking body 14 is located on the pressure transmission unit 1, and the locking body 14 includes a locking knob 141 and a locking boss 142 thereon, and the pressure monitoring unit 2 is provided with an arc-shaped protruding piece 22 that is fixedly connected with the locking boss 142. Of course, the locking body 14 can also be located on the pressure monitoring unit 2, and the pressure transmission unit 1 is locked with it. Figure 1BThe pressure transmission unit 1 and the pressure detection unit 2 on the host 3 are in a separated state, and the locking boss 142 on the locking body 14 and the arc-shaped protruding piece 22 on the pressure monitoring unit 2 are in a misaligned state. When the pressure transmission unit 1 is assembled and connected to the host 3, the locking boss 142 and the arc-shaped protruding piece 22 are engaged with each other, and the locking knob 141 is further rotated to make the upper surface 1421 of the boss in close contact with the lower surface 221 of the protruding piece, driving the pressure transmission cavity 130 to move so that the pressure transmission film 133 fits the pressure-sensitive film 201 as closely as possible; the locking body can also be a locking buckle or a magnetically attracted locking body (not shown), and the locking body is used in conjunction with the corresponding structure on the host 3 to stably fit the pressure transmission film 133 of the pressure transmission cavity 130 and the pressure-sensitive film 201 of the pressure-sensitive cavity 20 in contact.

[0063] like Figure 1A As shown, the inlet pipe 11 is provided with a hollow hard first bulge 115, the outlet pipe 12 is provided with a hollow hard second bulge 125, the inlet valve 113 and the outlet valve 123 are respectively embedded in the first bulge 115 and the second bulge 125 and can rotate therein; one side of the housing 31 of the host 3 is provided with a first accommodating space 310a for accommodating the first bulge 115 and a second accommodating space 310b for accommodating the second bulge 125; the housing 31 of the host 3 A liquid inlet regulating knob 311 is provided with one side protruding into the first accommodating space 310a and a liquid outlet regulating knob 312 is provided with one side protruding into the second accommodating space 310b. The liquid inlet regulating knob 311 and the liquid outlet regulating knob 312 are respectively linked with the liquid inlet valve 113 in the first bulging portion 115 and the liquid outlet valve 123 in the second bulging portion 125. The pressure sensing film 201 of the pressure sensing chamber 20 is located in the area between the first accommodating space 310a and the second accommodating space 310b.

[0064] The first accommodating space 310a and the second accommodating space 310b on one side of the housing 31 of the main body 3 are in the shape of a gap with openings on three sides. The first accommodating space 310a is provided with a first conformal groove 3101 with an opening facing outwards for facilitating the insertion of the inlet valve handle 1131 and a first buckle 3102 for properly restraining the first bulged portion 115; the second accommodating space 310b is provided with a second conformal groove 3103 with an opening facing outwards for facilitating the insertion of the outlet valve handle 1231 and a second buckle 3104 for properly restraining the second bulged portion 125; the inlet valve handle 113 The first conformal groove 310a is conformably embedded in the groove on the inner side of the liquid inlet regulating knob 311 (not shown); the liquid outlet valve handle 1231 is conformably embedded in the groove on the inner side of the liquid outlet regulating knob 312 through the second conformal groove 3103 (not shown); the first buckle 3102 and the second buckle 3104 with a certain elasticity can be buckled into the corresponding positions of the lower edges of the first enlarged part 115 and the second enlarged part 125 respectively, so that the first enlarged part 115 and the second enlarged part 125 are not easy to escape from the first accommodating space 310a and the second accommodating space 310b of the main body 3.

[0065] The first bulge 115 and the second bulge 125, which have arc-shaped internal contours, seal the inlet valve 113 and the outlet valve 123, which have circular main bodies. The inlet valve 113 is embedded in the first bulge 115. The inlet valve handle 1131 is rotated to cause the inlet valve 113 to rotate synchronously in the first bulge 115. By rotating to different positions, the inlet valve inner cavity 1130 is regulated to be connected with the inlet pipeline inner cavity 110. The outlet valve 123 is embedded in the second bulge 125. Inside, the rotating liquid outlet valve handle 1231 causes the liquid outlet valve 123 to rotate synchronously in the second expanded portion 125, and by rotating to different positions, it is regulated whether the inner cavity 1230 of the liquid outlet valve is connected with the inner cavity 120 of the liquid outlet pipeline; when the liquid inlet valve 113 is opened, urine can enter the pressure transmission cavity 130, and when the liquid inlet valve 113 is closed, urine cannot enter the pressure transmission cavity 130; when the liquid outlet valve 123 is opened, urine can flow out of the pressure transmission cavity 130, and when the liquid outlet valve 123 is closed, urine cannot flow out of the pressure transmission cavity 130.

[0066] A hard bridge body 16, the bridge body 16 connects the first bulge 115 on the inlet pipeline 11 of the pressure transmission unit 1 and the second bulge 125 on the outlet pipeline 12, so that the position between the first bulge 115 and the second bulge 125 is stable and can be displaced synchronously; the bridge body 16 is in the form of a sheet or a strip, and can be molded and made in one piece with the first bulge 115 and the second bulge 125, or it can be an independent component and then tightly buckled, bonded or welded with the first bulge 115 and the second bulge 125 as a whole; the bridge body 16 is easy for the operator to hold and use, and can drive the pressure transmission unit 1 to quickly and accurately dock with the host 3, so that the inlet adjustment knob 311 and the outlet adjustment knob 312 are respectively connected to the first bulge 115 and the second bulge 125. The liquid inlet valve 113 inside and the liquid outlet valve 123 in the second expanded part 125 are linked together, that is, the sheet-like liquid inlet valve handle 1131 is conformably embedded in the groove on the inner side of the liquid inlet regulating knob 311 (figure omitted), and the sheet-like liquid outlet valve handle 1231 is conformably embedded in the groove on the inner side of the liquid outlet regulating knob 312 (figure omitted); when the liquid inlet regulating knob 311 and the liquid outlet regulating knob 312 are driven by a finger or a motor to rotate, the liquid inlet valve 113 and the liquid outlet valve 123 are synchronously linked with the liquid inlet regulating knob 311 and the liquid outlet regulating knob 312; of course, under the same idea, valve slots can be set on the liquid inlet valve 113 and the liquid outlet valve 123, and protruding sheets are set on the inner sides of the liquid inlet regulating knob 311 and the liquid outlet regulating knob 312, and the protruding sheets are embedded in the valve slots to achieve synchronous linkage (figure omitted).

[0067] The pressure transmission component 13 is located in the area between the first enlarged portion 115 and the second enlarged portion 125; the first enlarged portion 115 and the pressure transmission cavity 130 of the pressure transmission component 13 and the pressure transmission cavity 130 of the pressure transmission component 13 and the second enlarged portion 125 are connected respectively by the first tubular middle section 15a and the second tubular middle section 15b, and at least a part of the first middle section 15a and the second middle section 15b is a tube body that is easy to deform; the first middle section 15a and the second middle section 15b allow the pressure transmission component 13 located between the first enlarged portion 115 and the second enlarged portion 125 to have a free stroke, so that the locking body 14 drives the pressure transmission cavity 130 to move toward the pressure sensing cavity 20 and maintain full contact, while avoiding the position movement of the liquid inlet pipeline 11 and / or the liquid outlet pipeline 12 to interfere with the stable contact between the pressure transmission port 1300 of the pressure transmission cavity 130 and the pressure sensing port 200 of the pressure sensing cavity 20.

[0068] The free stroke means that under the premise that the positions of the first bulge 115, the bridge body 16, and the second bulge 125 remain unchanged, the pressure transmission component 13 can move toward or away from the pressure sensing port 200 of the pressure sensing cavity 20 within a certain range due to the presence of the first middle section 15a and the second middle section 15b that are easy to deform, without being constrained by the hard first bulge 115, the bridge body 16, and the second bulge 125, which is conducive to driving the pressure transmission port 1300 to accurately and stably contact the pressure sensing cavity 20 through the locking body 14. When in use, when external force acts on the first enlarged portion 115, the bridging body 16 and the second enlarged portion 125 directly or through the liquid inlet pipeline 11 and / or the liquid outlet pipeline 12, due to the buffering of the first middle section 15a and the second middle section 15b which are easy to deform, the external force is difficult to be transmitted to the pressure transmitting component 13, thereby making it difficult to interfere with the pressure transmitting film 133 on the pressure transmitting port 1300 and the pressure sensing film 201 on the pressure sensing port 200 to ensure full contact, thereby ensuring the reliability of pressure transmission and perception.

[0069] The main body 3 shell 31 is provided with a left movable door 313 and a right movable door 314 that are fitted by snap-fitting, and the left movable door 313 and / or the right movable door 314 are provided with a finger buckle portion 315; the left movable door 313 and the right movable door 314 are opened to both sides at the same time, fully exposing the space area between the first accommodating space 310a and the second accommodating space 310b of the main body shell 31, which is conducive to holding the bridge body 16 to insert the pressure transmission unit 1 into the main body 3, thereby realizing a quick installation operation.

[0070] like Figure 1E-1HAs shown, the liquid inlet pipeline 11 and the pressure transmission cavity 130 of the pressure transmission component 13, and the pressure transmission cavity 130 of the pressure transmission component 13 and the liquid outlet pipeline 12 are respectively connected by a first middle section 15a and a second middle section 15b which are at least partially easy to deform; the first middle section 15a and the second middle section 15b respectively allow a certain range of free travel between the pressure transmission component 13 and the liquid inlet pipeline 11 and the liquid outlet pipeline 12, which is beneficial for the locking body 14 to finely adjust the distance between the pressure transmission port 1300 of the pressure transmission cavity 130 and the pressure sensing port 200 of the pressure sensing cavity 210; Figure 1E , 1F The inlet pipeline 11 and the outlet pipeline 12 are both hard pipelines that are not easy to deform. The inlet pipeline 11 has an inlet pipeline inlet 111 and an inlet pipeline outlet 112, the outlet pipeline 12 has an outlet pipeline inlet 121 and an outlet pipeline outlet 122, the pressure transmission component 13 is provided with a pressure transmission cavity inlet 131 and a pressure transmission cavity outlet 132, the first middle section 15a and the second middle section 15b are independent hollow pipelines that are easy to deform, and the first The middle section 15a is connected to the liquid inlet pipeline outlet 112 of the liquid inlet pipeline 11 and the pressure transmission chamber liquid inlet 131 of the pressure transmission component 13, and a distance is set between the liquid inlet pipeline outlet 112 and the pressure transmission chamber liquid inlet 131. The second middle section 15b is connected to the liquid outlet pipeline inlet 121 of the liquid outlet pipeline 12 and the pressure transmission chamber liquid outlet 132 of the pressure transmission component 13, and a distance is set between the liquid outlet pipeline inlet 121 and the pressure transmission chamber liquid outlet 132. Figure 1E The first middle section 15a and the second middle section 15b are in a connected state. Figure 1F The middle part is the state where the first middle section 15a and the second middle section 15b are not connected; Figure 1G The first middle section 15a is the portion of the liquid inlet pipeline 11 adjacent to the liquid inlet 131 of the pressure transmission chamber of the pressure transmission component 13, that is, the portion of the liquid inlet pipeline 11 adjacent to the liquid inlet 131 of the pressure transmission chamber of the pressure transmission component 13 is easy to deform and connected to the liquid inlet of the pressure transmission component 13, and the second middle section 15b is the portion of the liquid outlet pipeline 12 adjacent to the liquid outlet 132 of the pressure transmission component 13, that is, the portion of the liquid outlet pipeline 12 adjacent to the liquid outlet 132 of the pressure transmission chamber of the pressure transmission component 13 is easy to deform and connected to the liquid outlet of the pressure transmission component 13; Figure 1H The portion of the liquid inlet pipeline 11 adjacent to the pressure transmission component 13 is directly connected to the pressure transmission chamber 130 of the pressure transmission component 13 to form a first middle section 15a that is easy to deform. The portion of the liquid outlet pipeline 12 adjacent to the pressure transmission component 13 is also directly connected to the pressure transmission chamber 130 to form a second middle section 15b that is easy to deform. The portions of the liquid inlet pipeline 11 and the liquid outlet pipeline 12 adjacent to the pressure transmission component 13 can be connected, easily deformed, hollow pipelines connected to the pressure transmission chamber 130. The portions of the liquid inlet pipeline 11 and the liquid outlet pipeline 12 adjacent to the pressure transmission component 13 can also be two independent, easily deformed hollow pipelines, which are then sealed and connected to the pressure transmission chamber 130 respectively.

[0071] When the device is not in use, Figure 1A As shown, the pressure transmission unit 1 is not connected to the main unit 3, and the hard bridge body 16 on the pressure transmission unit 1 connects the liquid inlet pipeline 11 and the liquid outlet pipeline 12 of the pressure transmission unit 1. The bridge body 16 is convenient for the operator to install or replace the pressure transmission unit 1, and can ensure the stability of the liquid inlet pipeline 11 and the liquid outlet pipeline 12, and ensure the pressure transmission stability of the pressure transmission component 13. In this embodiment, the bridge body 16 is integrally formed, and the two sides of the bridge body 16 are respectively connected to the hard first bulge 115 on the liquid inlet pipeline 11 and the hard second bulge 125 on the liquid outlet pipeline 12. The bridge body 16 can also be made in parts and connected as a whole by bonding, snap connection, interference connection, etc.; Figure 1C As shown, when the device needs to be used, the operator holds the bridge body 16 to make the pressure transmission component 13 of the pressure transmission unit 1 correspond to the pressure monitoring unit 2 in the host 3. When the detection module 34 of the host 3 detects that the transmission unit 1 has been installed in place, the locking body 14 is rotated to make the pressure transmission film 133 of the pressure transmission component 13 close to the pressure sensing film 201 of the pressure monitoring unit 2, and then the left movable door 313 and the right movable door 314 on the host 3 are closed; when the device is finished using, the host 3 and the pressure monitoring unit 2 in the host 3 can be reused, and only the pressure transmission unit 1 is replaced, that is, the pressure transmission unit 1 is used as an independent consumable.

[0072] Fig. 1I The figure shows the connection state of the device, the liquid inlet pipeline 11 is connected to the urinary catheter 4 through the integral extension pipeline 41, and the liquid outlet pipeline 12 is used in conjunction with the liquid collection bag 5 through the integral liquid collection pipeline 51; Figure 1J The device is shown in the use state, the urine inlet 401 of the catheter 4 is located in the patient's bladder (not shown), and the urine outlet 402 of the catheter 4 is connected to the extension pipeline 41, thereby draining the urine in the patient's bladder to the liquid collection bag 5; Figure 1K As shown, the liquid inlet regulating knob 311 and the liquid outlet regulating knob 312 of the housing 31 of the host 3 are exposed to the outside for the convenience of medical operation. The liquid inlet regulating knob 311 and the liquid outlet regulating knob 312 are respectively used in conjunction with the liquid inlet valve 113 and the liquid outlet valve 123 on the liquid inlet pipeline 11 and the liquid outlet pipeline 12, that is, when the liquid inlet regulating knob 311 and the liquid outlet regulating knob 312 located on the host 3 are rotated, the liquid inlet valve 113 and the liquid outlet valve 123 can be rotated synchronously respectively. The liquid inlet valve 113, the liquid outlet valve 123, the liquid inlet regulating knob 311 and the liquid outlet regulating knob 312 shown by the solid line in the figure are in the closed state (refer to Figure 1M The dotted lines in the figure show that the inlet valve 113, the outlet valve 123, the inlet regulating knob 311, and the outlet regulating knob 312 are in the open state (see Figure 1L), when the pressure transmission unit 1 is disassembled or assembled with the host 3, the liquid inlet valve 113, the liquid outlet valve 123, the liquid inlet regulating knob 311, and the liquid outlet regulating knob 312 are all required to be in a closed state; in order to make the atmospheric pressure directly or indirectly connected with the pressure transmission chamber 130, the atmospheric communication port 10 can be closed or opened due to the movement of the liquid inlet valve 113 and / or the liquid outlet valve 123. Since the atmospheric communication port 10 is located on the liquid inlet pipeline 11 in this embodiment, the liquid inlet valve 113 controls the opening and closing states of the atmospheric communication port 10. The open state refers to the state in which the atmospheric communication port 10 is connected with the pressure transmission chamber 130, and the closed state refers to the state in which the atmospheric communication port 10 and the pressure transmission chamber 130 are blocked by the liquid inlet valve 113. The liquid inlet valve 113 is a three-way valve; Figure 1M , the atmosphere communication port 10 is shown to be in an open state, while the liquid inlet valve 113 is in a closed state, and the inner cavity 1130 of the liquid inlet valve is in communication with the atmosphere communication port 10; Figure 1N The atmospheric communication port 10 is shown to be in a closed state, while the liquid inlet valve 113 is in an open state.

[0073] One operation step that can be implemented by this device is as follows:

[0074] ① Install the pressure transmission unit 1: After starting up, adjust the inlet valve 113, outlet valve 123, inlet adjustment knob 311, and outlet adjustment knob 312 to the closed state, such as Figure 1K At the middle solid line position, the pressure transmission unit 1 is adapted to be inserted into the host 3, the first expanded portion 115 and the second expanded body 125 are synchronously embedded in the first accommodating space 310a and the second accommodating space 310b of the host 3, the pressure transmission port 1300 is opposite to the pressure sensing port 200, and the locking body 14 is rotated clockwise until it cannot rotate, and the pressure transmission film 133 is in full contact with the pressure sensing film 201.

[0075] ② Connect the pipelines: connect the extension pipeline 41 connected to the liquid inlet pipeline 11 and the liquid collection pipeline 51 connected to the liquid outlet pipeline 12 of the pressure transmission unit 1 to the urinary catheter 4 inserted into the bladder and the liquid collection bag 5 respectively (at this time, the liquid inlet valve 113, the liquid outlet valve 123, the liquid inlet regulating knob 311, and the liquid outlet regulating knob 312 are in the closed state).

[0076] ③Pressure reset: Place the device on the patient's bed ( Figure 1J), the operation key is used to input the measured height value of the pubic symphysis from the bed surface, and the pressure difference between the pubic symphysis and the pressure transmission unit is cleared by the program of the host 3 to avoid affecting the accurate monitoring of the bladder pressure and the abdominal pressure. The specific operation is as follows: the liquid inlet adjustment knob 311 and the liquid outlet adjustment knob 312 are rotated to open in sequence, that is, the liquid inlet valve 113 and the liquid outlet valve 123 are opened in linkage, and the urine is drained from the bladder to the catheter 4 and the extension pipeline 41, and then enters the liquid collection pipeline 51 through the liquid inlet pipeline 11 and the liquid outlet pipeline 12, and finally flows into the liquid collection bag 5 ( Fig. 1I , 1J , Figure 1L ); After the urine is emptied, the liquid outlet valve 123 and the liquid inlet valve 113 are closed, and the pressure zeroing program of the host 3 is started, and a prompt of "zeroing starts" appears (display screen or voice prompt), and the confirmation key in the button is clicked, and a prompt of "zeroing successful" is displayed. At this time, the atmosphere connection port 10 is connected to the external environment, and the pressure value monitored and fed back on the display screen by the pressure sensor 21 is used as the basic zero pressure value, which is used as the basis for the device to monitor the bladder pressure, abdominal pressure or the positive feedback contraction force of the bladder detrusor muscle;

[0077] ④ Bladder pressure or abdominal pressure monitoring: After the pressure is cleared, the inlet valve 113 is opened, and the outlet valve 123 remains closed ( Figure 1N ), at this time, the pressure value monitored by the pressure sensor 21 is the bladder pressure or the abdominal pressure. As time goes by, the urine in the bladder increases, and the urine pressure in the bladder is transmitted from the pressure transmission cavity 130 to the pressure sensing cavity 200 and sensed by the pressure sensor 21. When the bladder pressure is detected to reach the urination setting threshold or the bladder pressure risk threshold, the host 3 emits a prompt sound or an alarm sound, and then manually or automatically opens the liquid outlet valve 123 to discharge urine. In the process of monitoring the bladder pressure of this device, when the amount of urine stored in the bladder is small, the bladder pressure is equivalent to the abdominal pressure. According to the latest standards of the WSACS Diagnosis and Treatment Guidelines for Intra-abdominal Hypertension and Abdominal Compartment Syndrome (2013 Edition), the gold standard for measuring the intra-abdominal pressure of patients is the patient's bladder static pressure, that is, when the bladder detrusor muscle does not work, the bladder static pressure is equal to the abdominal pressure.

[0078] ⑤ Determination of positive feedback ability of bladder detrusor muscle: after the pressure in the bladder reaches the set threshold for urination (such as 2Kpa), the liquid outlet valve 123 is opened to discharge urine. After urination continues for several seconds or tens of seconds, the liquid outlet valve 123 is quickly closed, and the change of bladder pressure value within 30 seconds is recorded (the host program can draw a pressure change curve, and the device must be kept in a static state during this period). The maximum bladder pressure value recorded within 30 seconds is the maximum contraction force of the bladder detrusor muscle during the positive feedback urination process, which can be used to determine whether the patient's bladder function has recovered and provide individualized clinical basis for whether the indwelling catheter 4 can be removed (such as monitoring a pressure of more than 4Kpa during the urination process, indicating that the bladder detrusor muscle function is competent for urination activities after the removal of the catheter 4, of course, the patency of the urethra must be guaranteed).

[0079] In this embodiment, at least the pressure sensitive element 210 of the pressure sensor 21 is in direct contact with the pressure sensing chamber 20 ( Figure 1L , 1M , 1N, 1O), sense the pressure change signal of the liquid, and then transmit the signal to the central processor C of the host 3 through the pressure sensor output element 211 for modulation, analysis, output, etc.

[0080] Embodiment 2:

[0081] like Figure 2A , 2B As shown, the biggest difference from the previous embodiment is that it also includes at least one sampling chamber 17 for extracting urine, the sampling chamber 17 is located between the liquid inlet pipeline 11 and the pressure transmission chamber 130, and is arranged on the pressure transmission component 13 whose main body is in a block shape or is close to the pressure transmission component 13, the sampling chamber opening 170 faces one side of the bridge body 16, the sampling chamber opening 170 is closed by an elastic body 171 that can be self-sealed after puncture, and the bridge body 16 is provided with a puncture needle through hole 160 facing the sampling chamber opening 170; Figure 2B The left side cross-sectional view shows that the puncture needle enters the sampling cavity 17 after piercing the elastic body 171 through the puncture needle hole 160, and the urine in the sampling cavity 17 is extracted for routine urine testing, urine bacterial culture, etc.; Figure 2B The right side cross-sectional view shows that after the puncture needle withdraws from the sampling chamber opening 170 after collecting urine, the elastic body 171 made of silicone rubber or other materials automatically seals the puncture passage to prevent urine from flowing out through the sampling chamber opening 170 and / or bacteria in the external environment from entering the sampling chamber 170; the sampling chamber 17 can also be located in the pressure transmission chamber 130 area, but in order to avoid the flexible pressure transmission film 133 in the pressure transmission chamber 130 from being punctured, resulting in the failure of the pressure transmission unit 1, a structure is required to prevent the puncture needle from contacting the pressure transmission film 133, and because the urine in the pressure transmission chamber 130 area may be turbulent due to the local corners, when the sampling chamber 17 is located in the pressure transmission chamber 130 area, it cannot be guaranteed that the patient's latest urine can be extracted; Figure 2CAnother solution for puncture is shown, in which the bridge body 16 is provided with a puncture needle passing notch 161 facing the sampling cavity opening 170 .

[0082] Embodiment 3:

[0083] like Figure 3A As shown, the pressure transmission unit 1 is provided with an electronic tag 18 for use with the host to determine the correspondence between the pressure transmission unit 1 and the host 3, determine whether the pressure transmission unit 1 is within the validity period, and record or limit the use time and number of uses of the pressure transmission unit 1; the host 3 is provided with an identification module (not shown) for the electronic tag 18, such as a radio frequency identification module. When the electronic tag 18 on the pressure transmission unit 1 cannot be detected by the identification module on the host 3, the central processor (not shown) of the host 3 will automatically alarm or make the device unable to work normally, so as to eliminate the corresponding risks of improper use of the pressure transmission unit 1; Figure 3B As shown, the pressure transmitting area 1332 of the pressure transmitting film 133 and / or the pressure sensing area 2012 of the pressure sensing film 201 are bulged outward when not in contact with each other, ensuring that the pressure transmitting area 1332 and the pressure sensing area 2012 can be in close contact with each other during use, and the liquid pressure change signal of the pressure transmitting cavity 130 can be accurately identified by the pressure sensor 21 (the sampling cavity, the elastomer and the puncture needle passage hole are not shown in 3B).

[0084] By molding or pre-shaping process, a sufficient amount of pressure-transmitting body is filled in the pressure-sensing cavity 20, so that the pressure-transmitting film 133 and / or the pressure-sensitive film 201 are convex outward when not in contact with external objects; hundreds of comparison tests with concave and flat films show that the pressure-transmitting film 133 and / or the pressure-sensitive film 201 that is pre-convex outward has more stable pressure transmission and pressure sensing performance and higher accuracy.

[0085] The device may also be provided with a driving motor (not shown), which directly or indirectly controls the opening or closing of the liquid inlet valve 113 and / or the liquid outlet valve 123; the indirect control by the driving motor means that the driving motor indirectly controls the opening or closing of the liquid inlet valve 113 and the liquid outlet valve 123 by driving the liquid inlet regulating knob 311 and the liquid outlet regulating knob 312 which are linked with the liquid inlet valve 113 and the liquid outlet valve 123; after the urine is emptied, the driving motor receives a "pressure reset" command input by the host central processor C or the operator, and the driving motor directly or indirectly drives the liquid outlet valve to close , the liquid inlet valve is closed, and the device starts the "pressure clearing" program; when the drive motor receives the "bladder pressure monitoring" instruction, the liquid inlet valve 113 is immediately opened; when the bladder pressure reaches the preset urination threshold or safety threshold, the device directly opens the liquid outlet valve 123 through the drive motor, and urine is immediately discharged from the bladder; and when it is necessary to measure the positive feedback ability of the bladder detrusor muscle during urination, the corresponding program can be selected to be automatically completed by the drive motor; the instruction received by the drive motor can be a menu instruction when the bladder pressure value reaches a certain set threshold or the operator selects it through a button.

[0086] The pressure transmission unit and pressure monitoring device of the utility model are not only used for monitoring bladder pressure, but also can be used for monitoring intracranial pressure during ventricular drainage, monitoring thoracic pressure during thoracic drainage, pressure monitoring during pericardial effusion drainage, and pressure monitoring during liquid drainage in other natural cavities or pathological sinuses.

Claims

1. A pressure transmission unit (1), comprising: A liquid inlet pipeline (11), a liquid outlet pipeline (12) and a pressure transmission component (13) located between the liquid inlet pipeline (11) and the liquid outlet pipeline (12), wherein the pressure transmission component (13) is provided with a pressure transmission cavity (130), and a pressure transmission port (1300) of the pressure transmission cavity (130) is covered by a flexible pressure transmission film (133), and is characterized in that: it also includes a liquid inlet valve (113) and a liquid outlet valve (123) respectively arranged on the liquid inlet pipeline (11) and the liquid outlet pipeline (12); the liquid inlet pipeline (11 ) is provided with a hollow hard first bulge (115), and a hollow hard second bulge (125) is provided on the liquid outlet pipeline (12); the liquid inlet valve (113) and the liquid outlet valve (123) are respectively embedded in the first bulge (115) and the second bulge (125) and can rotate therein; when the liquid inlet valve (113) is opened, the inner cavity (1130) of the liquid inlet valve is communicated with the inner cavity (110) of the liquid inlet pipeline, and vice versa; when the liquid outlet valve (123) is opened, the inner cavity (1130) of the liquid outlet valve is communicated with the inner cavity (110) of the liquid inlet pipeline, and vice versa; The cavity (1230) is connected to the inner cavity (120) of the liquid outlet pipeline, and vice versa; the pressure transmission component (13) is located in the area between the first expanded portion (115) and the second expanded portion (125); the first expanded portion (115) and the pressure transmission cavity (130) of the pressure transmission component (13) are connected, and the pressure transmission cavity (130) of the pressure transmission component (13) and the second expanded portion (125) are connected respectively through the first tubular middle section (15a) and the second middle section (15b), and the first middle section (15a) and the second middle section (15b) are connected. At least a portion of the intermediate section (15a) and the second intermediate section (15b) is a tube body that is easily deformed; the first intermediate section (15a) and the second intermediate section (15b) allow a pressure transmission component (13) located between the first expanded portion (115) and the second expanded portion (125) to have a free stroke; and an atmosphere communication port (10) that can communicate with an inner cavity (1130) of a liquid inlet valve and / or an inner cavity (1230) of a liquid outlet valve is also provided on the liquid inlet pipeline (11) and / or the liquid outlet pipeline (12).

2. A pressure transmission unit (1) according to claim 1, characterized in that: The invention also comprises a hard bridge body (16), wherein the bridge body (16) connects the first bulged portion (115) on the liquid inlet pipeline (11) of the pressure transmission unit (1) and the second bulged portion (125) on the liquid outlet pipeline (12) into one body, so that the position between the first bulged portion (115) and the second bulged portion (125) is stable and can be displaced synchronously; the main body of the bridge body (16) is continuous and flat or is provided with one of a puncture needle passing hole (160) and a puncture needle passing notch (161).

3. A pressure transmission unit (1) according to claim 1, characterized in that: The atmosphere communication port (10) is arranged on the first expanded portion (115) and / or the second expanded portion (125); the atmosphere communication port (10) is connected to or isolated from the liquid inlet valve inner cavity (1130) and / or the liquid outlet valve inner cavity (1230) due to the different rotational positions of the liquid inlet valve (113) and / or the liquid outlet valve (123); the atmosphere communication port (10) is covered with a gas-permeable and liquid-impermeable film (101).

4. A pressure transmission unit (1) according to claim 1, characterized in that: It also includes a locking body (14), which is used to drive the pressure transmission chamber (130) to move.

5. A pressure transmission unit (1) according to claim 1, characterized in that: An electronic tag (18) is provided on the pressure transmission unit (1).

6. A pressure transmission unit (1) according to claim 2, characterized in that: The invention also comprises at least one sampling chamber (17) for extracting urine, wherein the sampling chamber (17) is located between the first bulged portion (115) of the liquid inlet pipeline (11) and the pressure transmission chamber (130), and the sampling chamber opening (170) faces one side of the bridge body (16), and the sampling chamber opening (170) is closed by an elastic body (171) which can be re-sealed after puncture.

7. A pressure transmission unit (1) according to claim 1, characterized in that: The pressure transmission film (133) is horizontal or convex outward when not in contact with an external object.

8. A pressure monitoring device, comprising the pressure transmission unit (1) according to any one of claims 1 to 7, and further comprising a pressure monitoring unit (2) and a host (3); the pressure monitoring unit (2) is connected to a housing (31) of the host (3) as a whole, and the pressure transmission unit (1) and the housing (31) of the host (3) are detachably connected; the pressure monitoring unit (2) comprises a pressure sensing chamber (20) and a pressure sensor (21) connected to the pressure sensing chamber (20) as a whole, the pressure sensing port (200) of the pressure sensing chamber (20) is covered by a flexible pressure sensing film (201), the pressure sensor (21) monitors the pressure change of the pressure sensing chamber (20) and transmits the pressure change signal to the central processor (C) of the host (3), characterized in that: The housing (31) of the main machine (3) is provided with a first accommodation space (310a) for accommodating the first enlarged portion (115) and a second accommodation space (310b) for accommodating the second enlarged portion (125); the housing (31) of the main machine (3) is provided with a liquid inlet regulating knob (311) extending into the first accommodation space (310a) and a liquid outlet regulating knob (312) extending into the second accommodation space (310b); the liquid inlet regulating knob (311) and the liquid outlet regulating knob (312) are respectively linked with the liquid inlet valve (113) in the first enlarged portion (115) and the liquid outlet valve (123) in the second enlarged portion (125); and the pressure-sensitive film (201) of the pressure-sensitive cavity (20) is located in the area between the first accommodation space (310a) and the second accommodation space (310b).

9. The pressure monitoring device according to claim 8, characterized in that: The pressure sensing chamber (20) of the pressure monitoring unit (2) is filled with a flowing or non-flowing pressure transmitting body.

10. The pressure monitoring device according to claim 8, characterized in that: The host (3) is provided with an identification module of the electronic tag (18).

11. The pressure monitoring device according to claim 8, characterized in that: The pressure-sensitive film (201) is horizontal or convex outward when not in contact with the pressure-transmitting film (133).

12. The pressure monitoring device according to claim 8, characterized in that: A left movable door (313) and a right movable door (314) which are engaged by snapping are provided on a housing (31) of the host (3), and a finger buckle portion (315) is provided on the left movable door (313) and / or the right movable door (314).

13. The pressure monitoring device according to claim 8, characterized in that: A display screen (32) and buttons (33) are provided on a housing (31) of the host (3). A central processing unit (C) in the host (3) receives and processes a pressure change signal monitored by a pressure sensor (21) on a pressure monitoring unit (2), and feeds back a corresponding value to the display screen (32).

14. The pressure monitoring device according to any one of claims 8 to 13, characterized in that: It also includes a driving motor, which directly or indirectly controls the opening or closing of the liquid inlet valve (113) and / or the liquid outlet valve (123).

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