Intra-abdominal pressure measuring catheter device and its construction method

Abstract

This invention discloses an intra-abdominal pressure measuring catheter device and its forming method. The method includes: forming a connecting tube for connecting a urinary catheter and having an on / off valve and a pressure measuring element thereon; forming a digital display drive mechanism detachably connected to the on / off valve for pushing the pressure measuring element to reciprocate along the axial direction perpendicular to the connecting tube and displaying the pressure data measured by the pressure measuring element. The intra-abdominal pressure measuring catheter device formed by the method of this invention can accurately obtain the patient's intra-abdominal pressure, can be left in place, is suitable for patients who need frequent intra-abdominal pressure monitoring, facilitates infection control, is safer to use, and facilitates accurate judgment and subsequent treatment by doctors.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and in particular to an intra-abdominal pressure measuring catheter device and its manufacturing method. Background Technology

[0002] Intra-abdominal pressure (IAP) refers to the steady-state pressure within the abdominal cavity and is a crucial physiological parameter for clinical diagnosis and treatment. Sustained elevation of IAP can be life-threatening. IAP measurement is divided into direct (invasive) and indirect (non-invasive) methods. In 2013, the World Federation for Abdominal Compartment Syndrome (WFCSC) published the "Guidelines for the Diagnosis and Treatment of Intra-abdominal Hypertension and Abdominal Compartment Syndrome," which recommends catheter-measured intravesical pressure (IAP) as the preferred method for measuring IAP in critically ill patients. The guidelines recommend measuring IAP every 4-6 hours. The "Summary of Best Evidence for the Management of Intra-abdominal Pressure Monitoring in Critically Ill Adult Patients" also recommends regular monitoring for high-risk patients or those with abnormal values ​​during screening, suggesting IAP measurements every 4-6 hours. To control infection, the number of catheter disconnections should be minimized. There is a conflict between measurement frequency and infection control, but this conflict does not exist if catheter disconnection is not required. Nurses measuring intra-abdominal pressure must strictly adhere to aseptic techniques.

[0003] In the existing method, a nurse needs to perform an intra-abdominal pressure measurement as follows: Use sterile scissors to cut off the front end of the tube of a disposable sterile drainage bag, and connect the cut end to a T-connector; use a 50ml syringe to draw 25ml of sterile saline, expel all air, and set aside; instruct the patient to lie supine, and clamp the urinary catheter after the bladder is emptied; drape with a sterile towel, separate the urine bag, and disinfect the front end of the urinary catheter; connect the catheter to the tube, open the clamp, and inject the saline into the bladder, waiting 30-60 seconds for the bladder muscles to relax; using the intersection of the iliac crest and the mid-axillary line as the zero point, place a ruler vertically next to the pressure measuring tube, separate the syringe, and allow the pressure measuring tube to communicate with the atmosphere; when the fluid level in the pressure measuring tube fluctuates slightly and no longer drops, the number on the scale corresponding to the concave surface of the fluid level in the pressure measuring tube at the end of the patient's expiration is the intra-bladder pressure.

[0004] During the above-mentioned intra-abdominal pressure measurement process, aseptic techniques must be strictly followed: hand hygiene protocols must be strictly adhered to, supplies must be prepared aseptically, sterile trays must be laid out, and supplies must be changed every 4 hours. When performing bladder manometry, all connections of the tubing must be thoroughly disinfected during disconnection and reconnection, and alcohol swabs should be used for rubbing disinfection for at least 15 seconds. The manometry device must be removed promptly after measurement. All of the above procedures require the preparation and processing of sterile supplies, the establishment of a sterile environment, and the strict adherence to aseptic techniques to protect the patient.

[0005] However, the above method has the following problems: the intra-abdominal pressure measurement should be a water column reading perpendicular to the ground; if the vertical angle is off, the reading may be inaccurate. Additionally, the zero-point calibration may introduce human error. Furthermore, the fluid density at the time of reading is between that of urine and saline, and the unit of measurement in centimeters of water column is only an estimate, resulting in imprecise results. The accumulation of errors from various causes can affect the doctor's judgment and subsequent treatment. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems and provide an intra-abdominal pressure measuring catheter device and its formation method, which can accurately obtain the patient's intra-abdominal pressure, can be left in place, is suitable for patients who need frequent intra-abdominal pressure monitoring, facilitates infection control, is safer to use, and helps doctors make accurate judgments and subsequent treatments.

[0007] To achieve the above-mentioned objectives of the present invention, one aspect of the present invention provides a method for forming an intra-abdominal pressure measuring catheter device, comprising:

[0008] A connecting tube is formed for connecting a urinary catheter and has an on / off valve and a pressure measuring element thereon;

[0009] A digital display drive mechanism is formed and detachably connected to the on / off valve to drive the pressure measuring element to reciprocate along the axial direction of the vertical connecting pipe and to display the pressure data measured by the pressure measuring element.

[0010] Preferably, the connecting tube forming a connection for connecting a urinary catheter and having an on / off valve and a pressure sensing element comprises:

[0011] Forming a body for connecting a urinary catheter;

[0012] A shut-off valve is formed on the body with its central axis perpendicular to the direction of the body's central axis, which is used to open or close the internal flow path of the body.

[0013] A pressure-measuring element is formed within the on / off valve to measure the pressure of urine within the patient's body when the flow path within the body is disconnected, thereby obtaining the corresponding intra-abdominal pressure of the patient.

[0014] Preferably, the body for connecting the urinary catheter includes:

[0015] An anti-dislodgement connector is formed at one end of the body to prevent the urinary catheter from slipping out when connected;

[0016] A water injection connector is formed near the anti-detachment connector on the main body, which allows for the injection of physiological saline into the main body as needed.

[0017] Preferably, the on / off valve formed on the body with its central axis perpendicular to the direction of the body's central axis, for opening or closing the internal flow path of the body, includes:

[0018] A valve seat is formed on the body in a cross shape and seamlessly connected to the body;

[0019] A valve core is formed within the valve seat, with its central axis perpendicular to the central axis of the valve body, and which can reciprocate within the valve seat.

[0020] Preferably, the pressure-sensing element formed within the on / off valve, which measures the intra-abdominal pressure of the patient by measuring the intra-abdominal urine pressure when the flow path within the body is disconnected, includes:

[0021] A through hole extending radially is formed on the valve core of the on / off valve;

[0022] A pressure measuring element is installed at the through hole of the valve core to measure the pressure of urine in the body when the internal flow path is disconnected, so as to obtain the corresponding intra-abdominal pressure of the patient.

[0023] Preferably, the digital display drive mechanism, which is detachably connected to the on / off valve and is used to push the pressure measuring element to reciprocate along the axial direction perpendicular to the body and to display the pressure data measured by the pressure measuring element, includes:

[0024] The housing consists of a lower connecting seat that is detachably connected to the valve seat and an upper display screen for displaying the pressure data measured by the pressure measuring element.

[0025] A drive structure on which the extension direction of its output component is the same as the axial direction of the valve core is mounted on the housing.

[0026] Preferably, the connecting seat is threaded or plugged into the valve seat.

[0027] Furthermore, the present invention also provides an intra-abdominal pressure measuring catheter device formed by the method described above, comprising: a connecting tube for connecting a urinary catheter and having an on / off valve and a pressure measuring element thereon; and a digital display drive mechanism detachably connected to the on / off valve for pushing the pressure measuring element to reciprocate along the axial direction perpendicular to the connecting tube and displaying the pressure data measured by the pressure measuring element.

[0028] Preferably, the connecting tube includes: a body for connecting a urinary catheter; an on / off valve disposed on the body with its central axis perpendicular to the direction of the connecting tube's central axis, for opening or closing the flow path within the body; and a pressure measuring element disposed within the on / off valve for measuring the pressure of urine within the body when the flow path within the body is closed, thereby obtaining the corresponding intra-abdominal pressure of the patient.

[0029] Preferably, the digital display drive mechanism includes: a housing with a lower connecting seat detachably connected to the valve seat and an upper display screen for displaying pressure data measured by the pressure measuring element; and a drive structure mounted on the housing with its output component extending in the same direction as the valve core axis.

[0030] Compared with the prior art, the intra-abdominal pressure measuring catheter device and its forming method of the present invention have the following advantages:

[0031] 1. The intra-abdominal pressure measuring catheter device formed by the method of the present invention can accurately obtain the patient's intra-abdominal pressure, can be left in place, is suitable for patients who need frequent intra-abdominal pressure monitoring, and reduces the number of times the catheter is disconnected and connected, which is beneficial to infection control, safer to use, and facilitates accurate judgment by doctors and subsequent treatment.

[0032] 2. The intra-abdominal pressure measuring catheter device formed by the method of the present invention has an on / off valve and a pressure measuring element on the connecting tube for connecting the urinary catheter. When the on / off valve disconnects the flow path in the connecting tube, the pressure measuring element detects the urine pressure in the connecting tube, and the pressure data measured by the pressure measuring element is displayed by a digital display drive mechanism. This allows medical staff to accurately obtain the patient's intra-abdominal pressure, which is beneficial for doctors to accurately judge the patient's condition and implement feasible subsequent treatment plans for the patient.

[0033] The present invention will now be described in detail with reference to the accompanying drawings. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the intra-abdominal pressure measuring catheter device without the connecting tube and digital display drive mechanism assembled.

[0035] Figure 2 A schematic diagram of the assembly of the connecting tube of the intra-abdominal pressure measuring catheter device with the digital display drive mechanism;

[0036] Figure 3 A schematic diagram of the structure of the digital display drive mechanism of the intra-abdominal pressure measuring catheter device when it pushes the valve core to the position where the pressure measuring element is in the position that disconnects the connecting pipe;

[0037] Figure 4 This is a schematic diagram of a connecting pipe structure;

[0038] Figure 5 This is a schematic diagram of another structure for the connecting pipe;

[0039] Figure 6 This is a front view of the first type of valve core structure;

[0040] Figure 7 This is a left view of the first type of valve core structure;

[0041] Figure 8 This is a front view of the second type of valve core structure;

[0042] Figure 9 This is a schematic diagram of the structure after the second type of valve core is installed inside the valve seat;

[0043] Figure 10 This is a front view of the third type of valve core structure;

[0044] Figure 11 This is a schematic diagram of a valve seat structure.

[0045] Figure 12 A front view of a structure for a connector;

[0046] Figure 13 A top view of one structure of the connector;

[0047] Figure 14 This is a control block diagram of the intra-abdominal pressure measuring catheter device of the present invention. Detailed Implementation

[0048] This invention provides a method for forming an intra-abdominal pressure measuring catheter device, comprising:

[0049] A connecting tube is formed for connecting a urinary catheter and has an on / off valve and a pressure measuring element thereon;

[0050] A digital display drive mechanism is formed and detachably connected to the on / off valve to drive the pressure measuring element to reciprocate along the axial direction of the vertical connecting pipe and to display the pressure data measured by the pressure measuring element.

[0051] Specifically, the method of the present invention includes:

[0052] S01. A connecting tube is formed for connecting a urinary catheter and having an on / off valve and a pressure measuring element thereon;

[0053] The present invention forms a connecting tube for connecting a urinary catheter and having an on / off valve and a pressure sensing element thereon, comprising:

[0054] Forming a body for connecting a urinary catheter;

[0055] A shut-off valve is formed on the body with its central axis perpendicular to the direction of the body's central axis, which is used to open or close the internal flow path of the body.

[0056] A pressure-measuring element is formed within the on / off valve to measure the pressure of urine within the patient's body when the flow path within the body is disconnected, thereby obtaining the corresponding intra-abdominal pressure of the patient.

[0057] The body for connecting the urinary catheter includes:

[0058] A tubular body 4 is formed, with one end for connecting to a urinary catheter and the other end for connecting to a urine bag;

[0059] An anti-dislodgement connector 1 is formed at one end of the main body used to connect the urinary catheter, so as to prevent the urinary catheter from slipping off or falling off the main body when the main body is connected to the urinary catheter;

[0060] A water injection connector 2 is formed near the anti-detachment connector of the main body, which is perpendicular to the main body and communicates with the inside of the main body, allowing physiological saline to be injected into the main body as needed.

[0061] The body can be a tube with a constant diameter (e.g.) Figure 5 (As shown), a pipe with varying diameter can also be used, for example, such as... Figures 1-4 As shown, it is formed by using tubes of different diameters. Each tube can be integrally formed or manufactured separately and then fixedly connected together.

[0062] The anti-detachment connector on the main body can be a pagoda-shaped connector, with multiple rings of raised ridges of increasing diameter to prevent tubing slippage. The water injection connector is used to inject physiological saline into the main body after disinfection. Both the anti-detachment connector and the water injection connector can adopt the structure of existing medical connectors. During manufacturing, the anti-detachment connector, water injection connector, and main body can be formed as a single piece; alternatively, the water injection connector and main body can be formed as a single piece, and the anti-detachment connector can be connected to the main body by threads or plugging; alternatively, the anti-detachment connector and water injection connector can be formed as a single piece, and then connected to the main body by threads or plugging; or alternatively, the anti-detachment connector, water injection connector, and main body can be formed separately and then assembled together.

[0063] After the body is formed, an on / off valve is formed on the body with its central axis perpendicular to the direction of the body's central axis, which is used to open or close the internal flow path of the body. A pressure measuring element 5 is formed in the on / off valve to obtain the corresponding intra-abdominal pressure of the patient by measuring the pressure of urine in the body when the internal flow path of the body is closed.

[0064] When forming the on / off valve on the body, a valve seat 3 that intersects the body in a cross shape and is seamlessly connected to the body is formed on the body, and a valve core 6 that can reciprocate within the valve seat has its central axis perpendicular to the central axis of the body.

[0065] The valve seat is a sleeve located outside the connecting pipe body and sealed at one end (as shown in the lower end seal), with its central axis perpendicular to the central axis of the body. Inside the valve seat, a valve core is placed through the unsealed end (as shown in the upper end), with its central axis coinciding with the valve seat's central axis. That is, the valve core's central axis is also perpendicular to the body's central axis. The height of the valve core is less than the height of the valve seat, and the outer diameter of the valve core is approximately equal to the inner diameter of the valve seat. This allows the valve core, after being placed inside the valve seat, to reciprocate within the valve seat from the unsealed end to the sealed end (as shown in the upper end) under external force, with the reciprocating stroke equal to or slightly greater than the inner diameter of the connecting pipe.

[0066] The valve core 6 of the present invention can be adopted as follows: Figure 6 , Figure 7 The first structure shown includes a columnar body 61 and a mounting hole 62 provided radially at the lower part of the columnar body. The mounting hole can be a through hole or a countersunk hole. The shape and size of the mounting hole are equal to or larger than the shape and size of the inner hole of the connecting pipe, so that the position of the mounting hole can be aligned with the inner hole of the connecting pipe when the valve core moves.

[0067] To monitor intra-abdominal pressure in patients with urinary catheters, a pressure-sensing element 5 is installed at the valve core's placement hole to detect the pressure of urine flowing within the connecting tube. This element can be an assembly including a pressure sensor, such as a thin-film pressure sensor, with a shape and size similar to the placement hole, allowing for seamless connection after placement at the valve core's placement hole. Thus, when the inner hole of the connecting tube is aligned with the placement hole, the pressure sensor assembly blocks the passage within the connecting tube, allowing the urine within the connecting tube to directly act on the pressure sensor assembly. The patient's intra-abdominal pressure is obtained by detecting the urine pressure. This pressure sensor assembly is a self-powered pressure sensor assembly from the prior art capable of wireless communication with external devices.

[0068] To prevent urine from overflowing from the gap between the valve core and valve seat after the valve core moves upward and returns to its original position within the valve seat, thus putting the connecting pipe in a conductive state, the design incorporates an elastic plug made of elastic material, such as a rubber plug, that is interference-fitted to the bottom of the cylindrical body. This plug is attached to the bottom of the cylindrical body using adhesive or other methods. Its diameter can be equal to or slightly larger than the diameter of the cylindrical body and it fits the inner bore of the valve seat. Alternatively, the entire valve core can be made of elastic material, such as a rubber valve core.

[0069] Furthermore, in order to reduce the impact on the column when an external force is applied to the column, a damping pad 63 can be provided at the top of the column. The damping pad can be made of rubber and is fixed to the top of the column by adhesive or other means. Its diameter can be equal to or slightly larger than the diameter of the column and is clearance-fitted or interference-fitted with the inner hole of the valve seat.

[0070] Alternatively, the valve core of the present invention can also adopt a second structure, which includes the columnar body of the first structure, but without opening a mounting hole at the lower part of the columnar body, and the pressure sensing element is directly fixed to the outer wall of the columnar body at the position corresponding to the location of the mounting hole by means of adhesive or other methods. In this way, when the valve core moves down in the valve seat to align the pressure sensing element with the inner hole of the connecting tube, the urinary tract in the connecting tube can be directly blocked, and the urine can be directly applied to the pressure sensing element.

[0071] Alternatively, the valve core of the present invention can also be made of, for example Figure 8 The third structure shown, based on the first structure, adds a spring 11 at the bottom of the valve core. After the valve core is placed in the valve seat, as... Figure 9 As shown, the bottom of the spring abuts against the inner wall of the valve seat, and the upper part of the spring abuts against the bottom of the valve core. When the spring is in its initial state, the valve core is in its original position, meaning the bottom of the valve core can be flush with the upper end of the inner hole of the connecting pipe (see reference). Figure 2 , Figure 9At this time, the urine flowing through the connecting tube can flow freely through the spring; when the valve core is moved downward by an external force to block the flow path of the connecting tube, the spring will be in a compressed state. When the external force on the valve core is removed, the valve core will move upward under the action of the spring's restoring force until it returns to its original position.

[0072] Alternatively, the valve core of the present invention can also be made of, for example Figure 10 The fourth structure shown increases the height of the columnar body compared to the first structure, and includes a radially penetrating through-hole 64 at the lower part of the columnar body. When the valve core is in its initial, unforced state, this through-hole aligns with the inner hole of the connecting pipe, ensuring the flow path within the connecting pipe is open. When the valve core is subjected to external force and moves downwards until the pressure sensing element mounted on it aligns with the inner hole of the connecting pipe, the valve core at the corresponding position within the valve seat will also move downwards. Accordingly, the height of the valve seat adapted to this structure needs to be increased accordingly. Alternatively, a spring can be installed at the lower part of the valve core in this structure to allow it to automatically return to its original position.

[0073] In addition, the valve core of the present invention can also adopt the structure of the valve core used in the prior art for blocking or opening the tubing in the urinary catheter, such as the structure of the valve core of the medical cross valve in the prior art.

[0074] S02, A digital display drive mechanism that is detachably connected to the on / off valve, used to push the pressure measuring element to reciprocate along the axial direction of the vertical connecting pipe and to display the pressure data measured by the pressure measuring element.

[0075] In order to enable the valve core on the connecting pipe to move relative to the valve seat, so as to detect the pressure in the flow path inside the connecting pipe through the pressure sensing element and display the pressure data detected by the pressure sensing element, so that medical staff can obtain the patient's intra-abdominal pressure, the present invention also forms a digital display drive mechanism detachably connected to the on / off valve, comprising:

[0076] The housing consists of a lower connecting seat that can be detachably connected to the valve seat, and an upper display screen for displaying the pressure data measured by the pressure measuring element.

[0077] A drive structure in which the extension direction of the output component is mounted on the housing and coincides with the axial direction of the valve core.

[0078] Specifically, the housing comprising a lower connecting seat detachably connected to the valve seat and an upper display screen for displaying pressure data measured by the pressure sensing element includes:

[0079] Formation as Figures 1-3 The cylindrical connector 7 shown is designed to be detachably connected to the valve seat when it is necessary to automatically block the flow path within the connecting pipe. The connection can be made using methods such as plug-in or screw-in. During manufacturing, an internal thread can be provided on the inner wall of the connector, or a thread can be provided on the inner wall of the connector such as... Figure 12 , Figure 13The slot 72 shown extends axially along the parallel connecting seat, and the bottom of the slot is provided with a circumferential groove 71 that communicates with it and extends circumferentially along the connecting seat, so that after the connecting seat and the valve seat are inserted in the vertical direction, they can be rotated relative to the valve seat by a certain angle to prevent the connecting seat and the valve seat from loosening. Correspondingly, when manufacturing the valve seat, a structure for detachable connection with the connecting seat is also formed on the outer wall of the upper part of the valve seat (i.e., the part corresponding to the open end), such as providing an external thread on the outer wall of the valve seat that matches the internal thread of the connecting seat; or, providing an axially extending protrusion 31 on the outer wall of the valve seat (e.g., Figure 11 As shown), a locking tongue 32 is provided at the bottom of the protruding ridge, which is perpendicularly connected to it and extends circumferentially along the valve seat for slotting into the circumferential groove of the connecting seat. The locking tongue can be made of elastic or non-elastic material. Alternatively, a structure in the prior art that allows the two to be detachably connected together and will not loosen axially after connection can also be used.

[0080] A hollow, rectangular display base 8 is formed, seamlessly connected to the top of the connecting base. The display base can be integrally molded with the connecting base, or it can be separately molded and then assembled together. Regardless of the method used, the inner cavity of the display base must be connected to the inner cavity of the connecting base. A display screen is installed on the display base to display the pressure data measured by the pressure measuring element, or to display the patient's intra-abdominal pressure.

[0081] When forming the display base, a drive structure 9 is also installed on the display base, the extension direction of which can coincide with the valve core axis to drive the valve core to move. In the design, this drive structure can be an electric structure, such as a linear motor drive structure, whose output shaft can extend and retract along the valve core axis. Alternatively, the drive structure can also be a pneumatic cylinder or a hydraulic cylinder, and the piston of the pneumatic cylinder or hydraulic cylinder can extend and retract along the valve core central axis.

[0082] During the construction of the display stand, a power supply module for providing electrical power and a control module electrically connected to the power supply module are also installed inside the display stand. The display screen and the drive structure are both electrically connected to the power supply module.

[0083] The control module is used to control the overall operation process and can employ chips with analysis, processing, and control functions, such as MCUs and CPUs, which are readily available in existing technologies. The control module is wirelessly connected to the pressure sensing element, receives pressure detection data transmitted from the element, analyzes and processes the data, and displays it on a screen for medical personnel to view.

[0084] The control module is connected to the display screen and electrically connected to the drive structure. The user can input commands via the display screen to perform periodic intra-abdominal pressure measurements using the pressure-sensing element, and commands for the drive structure to operate for a predetermined duration within each cycle. The user can also input commands via the display screen to perform a single intra-abdominal pressure measurement using the pressure-sensing element, and commands for the drive structure to operate for a predetermined duration during a single measurement. The input commands for periodically measuring intra-abdominal pressure (IBP) specify the time required for a certain number of IBP measurements within a given time period. For example, if IBP is measured 12 times within 12 hours, it is measured once every hour; if IBP is measured 6 times within 12 hours, it is measured once every 2 hours, and so on. The input commands for the drive structure to operate for a predetermined duration within each cycle specify the duration for the drive structure to perform the corresponding action within each cycle. This duration includes the total time for the output component to extend and retract. For example, when using an electrically driven structure, this is the total time from the first start of the drive structure moving the output component to a preset position, the first stop after reaching the preset position, the second start after the first stop for a preset time, the second stop after retracting the output component to its original position, etc. This time can be 1 minute or 2 minutes, etc. The start and stop times of each drive structure operation can be determined in advance through experiments according to experimental requirements. In application, the display screen can be a touch screen or a non-touch screen, with a touch screen being preferred.

[0085] The control module, based on the command input from the display screen indicating periodic intra-abdominal pressure measurement by a pressure-sensing element, controls the drive structure to periodically operate, thereby periodically blocking the flow path within the connecting pipe. During this blocking process, the intra-abdominal pressure is obtained by measuring the flow path pressure within each cycle. Specifically, within each cycle of controlling the drive structure, the control module executes the following actions: starting, actuating the valve core and pressure-sensing element via the output component to completely block the flow path in the connecting pipe, maintaining the output component in its current position so that the pressure-sensing element measures the flow path pressure within the connecting pipe for a preset duration, and then stopping.

[0086] Alternatively, the control module, based on the command input from the display screen for a single intra-abdominal pressure measurement using a pressure-measuring element and the command for the drive structure to operate for a predetermined duration during a single measurement, controls the drive structure to operate once, blocking the flow path within the connecting tube. During this blocking process, the intra-abdominal pressure is obtained by measuring the flow path pressure. The control module's control process for the drive structure's operation is the same as the operation process of the drive structure in each cycle described above.

[0087] When the control module controls the drive structure to operate, it extends and retracts the output component of the drive structure according to preset requirements. This causes the valve core, which is in contact with the output component, to move downwards and retract accordingly. This blocks or opens the flow path in the connecting pipe for a predetermined duration, thereby achieving the purpose of detecting the flow path pressure through a pressure measuring element when the flow path in the connecting pipe is blocked, and thus obtaining the patient's intra-abdominal pressure. In the design, the output component of the drive structure extends downwards from the inner cavity of the display seat into the inner cavity of the connecting seat, and moves telescopically along the inner cavity of the connecting seat. It can abut against the upper surface of the valve core, causing the valve core to move up and down accordingly.

[0088] Furthermore, in forming the display base, the present invention can also install an alarm module electrically connected to the power supply module and the control module, respectively. After receiving the pressure data transmitted by the pressure measuring element, the control module compares the pressure data with its pre-stored preset high and low pressure values. If the intra-abdominal pressure detected by the pressure measuring element exceeds the preset high value or falls below the preset low value, the control module controls the alarm module to emit an alarm sound. The alarm module can be a sound or audible-visual alarm module of existing technology.

[0089] Furthermore, when forming the display stand, this invention can also provide a data output interface, such as a USB interface, that is electrically connected to the control module, so as to export data via a USB data cable for convenient report generation. In addition, the control module can also output data in real time via wireless transmission, such as to the nurses' station, so that medical staff can receive or view it at any time.

[0090] In addition to providing the above-described method for forming an intra-abdominal pressure measuring urinary catheter device, the present invention also provides an intra-abdominal pressure measuring urinary catheter device formed by the above method, comprising: a connecting pipe 4 for connecting a urinary catheter (not shown in the figure) and having an on / off valve and a pressure measuring element 5 thereon; and a digital display drive mechanism detachably connected to the on / off valve for pushing the pressure measuring element to reciprocate along the axial direction perpendicular to the connecting pipe and displaying the pressure data measured by the pressure measuring element.

[0091] Specifically, the connecting tube includes: a body for connecting a urinary catheter; an on / off valve on the body with its central axis perpendicular to the central axis of the connecting tube, for opening or closing the flow path within the body; and a pressure measuring element located within the on / off valve for measuring the pressure of urine within the body when the flow path within the body is closed, thereby obtaining the corresponding intra-abdominal pressure of the patient.

[0092] The main body 4 is tubular, with one end for connecting to a urinary catheter and the other end for connecting to a urine bag. An anti-dislodgement connector 1 is provided at the end of the main body for connecting to the urinary catheter to prevent the urinary catheter from slipping off or falling off the main body when it is connected to the main body. A water injection connector 2 is provided near the anti-dislodgement connector on the main body, which is perpendicular to the main body and communicates with the inside of the main body, and can inject physiological saline into the main body as needed.

[0093] The main body can be a tube with a constant diameter (such as...). Figure 5 (As shown), a pipe with varying diameter can also be used, for example, such as... Figures 1-4 As shown, it is formed by using tubes of different diameters. Each tube can be integrally formed or manufactured separately and then fixedly connected together.

[0094] The anti-detachment connector on the main body can be a pagoda-shaped connector, with multiple rings of raised ridges of increasing diameter to prevent tubing slippage. The water injection connector is used to inject physiological saline into the main body after disinfection. Both the anti-detachment connector and the water injection connector can adopt the structure of existing medical connectors. During manufacturing, the anti-detachment connector, water injection connector, and main body can be formed as a single piece; alternatively, the water injection connector and main body can be formed as a single piece, and the anti-detachment connector can be connected to the main body by threads or plugging; alternatively, the anti-detachment connector and water injection connector can be formed as a single piece, and then connected to the main body by threads or plugging; or alternatively, the anti-detachment connector, water injection connector, and main body can be formed separately and then assembled together.

[0095] The on / off valve includes a valve seat 3 that intersects the body in a cross shape and is seamlessly connected to the body, and a valve core 6 that is disposed in the valve seat with its central axis perpendicular to the direction of the central axis of the body and can reciprocate within the valve seat.

[0096] The valve seat is a sleeve located outside the connecting pipe body and sealed at one end (as shown in the lower end seal), with its central axis perpendicular to the central axis of the body. Inside the valve seat, a valve core 6 is installed via the unsealed end (as shown in the upper end), with its central axis coinciding with the central axis of the valve seat. That is, the central axis of the valve core is also perpendicular to the central axis of the body. The height of the valve core is less than the height of the valve seat, and the outer diameter of the valve core is approximately equal to the inner diameter of the valve seat. This allows the valve core, after being installed inside the valve seat, to reciprocate within the valve seat from the unsealed end to the sealed end (as shown in the upper end) under external force, with the reciprocating stroke being equal to or slightly greater than the inner diameter of the connecting pipe.

[0097] The valve core 6 of this invention can be made as follows: Figure 6 , Figure 7 The first structure shown includes a columnar body 61 and a mounting hole 62 provided radially at the lower part of the columnar body. The mounting hole can be a through hole or a countersunk hole. The shape and size of the mounting hole are equal to or larger than the shape and size of the inner hole of the connecting pipe, so that the position of the mounting hole can be aligned with the inner hole of the connecting pipe when the valve core moves.

[0098] To monitor intra-abdominal pressure in patients with urinary catheters, a pressure-sensing element 5 is installed at the valve core's placement hole to detect the pressure of urine flowing within the connecting tube. This element can be a component including a pressure sensor, such as a thin-film pressure sensor, with a shape and size similar to the placement hole, allowing for seamless connection after placement at the valve core's placement hole. Thus, when the inner hole of the connecting tube is aligned with the placement hole, the pressure sensor component blocks the passage within the connecting tube, allowing the urine within the connecting tube to directly act on the pressure sensor component. The patient's intra-abdominal pressure is obtained by detecting the urine pressure. This pressure sensor component is a self-powered pressure sensor component with prior art capabilities that can wirelessly communicate with external devices, transmitting the detected pressure information to a corresponding device or remote user. In application, assuming that the pressure of the urine in the connecting tube is the same in all directions along the flow direction, the pressure (Pascal) measured on the force-bearing area of ​​the pressure sensor is used to obtain the pressure received by the pressure sensor = the pressure of the urine in the connecting tube and the intra-abdominal pressure. After unit conversion, 1 Pascal (Pa) = 0.0102 cmH2O, the patient's intra-abdominal pressure can be obtained.

[0099] To prevent urine from overflowing from the gap between the valve core and valve seat after the valve core moves upward and returns to its original position within the valve seat, thus putting the connecting pipe in a conductive state, the design incorporates an elastic plug made of elastic material, such as a rubber plug, that is interference-fitted to the bottom of the cylindrical body. This plug is attached to the bottom of the cylindrical body using adhesive or other methods. Its diameter can be equal to or slightly larger than the diameter of the cylindrical body and it fits the inner bore of the valve seat. Alternatively, the entire valve core can be made of elastic material, such as a rubber valve core.

[0100] Furthermore, in order to reduce the impact on the column when an external force is applied to the column, a damping pad 63 can be provided at the top of the column. The damping pad can be made of rubber and is fixed to the top of the column by adhesive or other means. Its diameter can be equal to or slightly larger than the diameter of the column and is clearance-fitted or interference-fitted with the inner hole of the valve seat.

[0101] Alternatively, the valve core of the present invention can also adopt a second structure, which includes the columnar body of the first structure, but without opening a mounting hole at the lower part of the columnar body, and the pressure sensing element is directly fixed to the outer wall of the columnar body at the position corresponding to the location of the mounting hole by means of adhesive or other methods. In this way, when the valve core moves down in the valve seat to align the pressure sensing element with the inner hole of the connecting tube, the urinary tract in the connecting tube can be directly blocked, and the urine can be directly applied to the pressure sensing element.

[0102] Alternatively, the valve core of the present invention can also be made of, for example Figure 8 The third structure shown, based on the first structure, adds a spring 11 at the bottom of the valve core. After the valve core is placed in the valve seat, as... Figure 9As shown, the bottom of the spring abuts against the inner wall of the valve seat, and the upper part of the spring abuts against the bottom of the valve core. When the spring is in its initial state, the valve core is in its original position, meaning the bottom of the valve core can be flush with the upper end of the inner hole of the connecting pipe (see reference). Figure 2 , Figure 9 At this time, the urine flowing through the connecting tube can flow freely through the spring; when the valve core is moved downward by an external force to block the flow path of the connecting tube, the spring will be in a compressed state. When the external force on the valve core is removed, the valve core will move upward under the action of the spring's restoring force until it returns to its original position.

[0103] Alternatively, the valve core of the present invention can also be made of, for example Figure 10 The fourth structure shown increases the height of the columnar body compared to the first structure, and includes a radially penetrating through-hole 64 at the lower part of the columnar body. When the valve core is in its initial, unforced state, this through-hole aligns with the inner hole of the connecting pipe, ensuring the flow path within the connecting pipe is open. When the valve core is subjected to external force and moves downwards until the pressure sensing element mounted on it aligns with the inner hole of the connecting pipe, the valve core at the corresponding position within the valve seat will also move downwards. Accordingly, the height of the valve seat adapted to this structure needs to be increased accordingly. Alternatively, a spring can be installed at the lower part of the valve core in this structure to allow it to automatically return to its original position.

[0104] In addition, the valve core of the present invention can also adopt the structure of the valve core used in the prior art for blocking or opening the tubing in the urinary catheter, such as the structure of the valve core of the medical cross valve in the prior art.

[0105] The digital display drive mechanism of this invention includes: a housing with a lower connecting seat detachably connected to a valve seat and an upper display screen for displaying pressure data measured by a pressure measuring element; and a drive structure mounted on the housing with its output component extending in the same direction as the valve core axis. Through the digital display drive mechanism detachably connected to the on / off valve, the valve core on the connecting pipe can move relative to the valve seat, the pressure measuring element detects the pressure in the flow path within the connecting pipe, and the pressure data detected by the measuring element is displayed, allowing medical personnel to obtain the patient's intra-abdominal pressure.

[0106] The housing of this invention includes a connecting base 7 and a hollow cuboid display base 8 seamlessly connected to the top of the connecting base. For example... Figures 1-3 As shown, the connecting seat is cylindrical. When it is necessary to automatically block the flow path inside the connecting pipe, the connecting seat can be detachably connected to the valve seat. Connection can be made by plug-in or screw connection. During manufacturing, internal threads can be provided on the inner wall of the connecting seat, or additional threads can be provided on the inner wall of the connecting seat, such as... Figure 12 , Figure 13The slot 72 shown extends axially along the parallel connecting seat, and the bottom of the slot is provided with a circumferential groove 71 that communicates with it and extends circumferentially along the connecting seat, so that after the connecting seat and the valve seat are inserted in the vertical direction, they can be rotated at a certain angle relative to the valve seat to prevent the connecting seat and the valve seat from becoming loose.

[0107] Correspondingly, during the manufacturing of the valve seat, a structure for detachable connection with the connecting seat is formed on the outer wall of the upper part of the valve seat (i.e., the part corresponding to the open end). For example, an external thread adapted to the internal thread of the connecting seat is provided on the outer wall of the valve seat; or, an axially extending protrusion 31 is provided on the outer wall of the valve seat, and a locking tongue 32 for slotting into the circumferential groove of the connecting seat is provided at the bottom of the protrusion 31, which is perpendicularly connected to it and extends circumferentially along the valve seat. The locking tongue can be made of elastic or non-elastic material. In addition, a structure that can detachably connect the two together and will not loosen axially after connection can also be used, as in the prior art.

[0108] During the design process, the height of the upper part of the valve seat is matched with the height of the connecting seat so that after the two are connected, the lower surface of the connecting seat can abut against the upper surface of the connecting pipe. The connecting pipe and the valve seat jointly support the connecting seat to maintain stability. The extension length of the drive mechanism output component is approximately equal to the distance between the upper end of the pressure sensing element and the inner hole of the connecting pipe, so that after the valve seat and the connecting seat are connected, the lower end of the output component exactly abuts against the top of the valve core (e.g., ...). Figure 2 As shown). When the output component extends, it pushes the valve core downwards. When the output component extends to its final position, the distance the valve core moves downwards ensures that the pressure sensing element reaches a position that completely blocks the flow path within the connecting pipe (e.g.). Figure 3 (As shown). Of course, during the design, after the connecting seat and the valve seat are connected in place, the output component of the drive structure may not contact the upper surface of the valve core, and the extension and retraction stroke of the output component can be preset by the displacement required for the valve core to move to completely block the flow path in the connecting pipe.

[0109] The display base of this invention can be integrally formed with the connecting base, or it can be separately formed and then assembled together. Regardless of the method used, the inner cavity of the display base must be connected to the inner cavity of the connecting base. A display screen is installed on the display base to display the pressure data measured by the pressure measuring element, or to display the patient's intra-abdominal pressure.

[0110] This invention includes a drive structure 9 mounted on a display base, the extension direction of which coincides with the axial direction of the valve core to drive the valve core to move. In design, this drive structure can be an electric structure, such as a linear motor drive structure in the prior art, whose output shaft can extend and retract along the axial direction of the valve core. Alternatively, the drive structure can also be a pneumatic cylinder or a hydraulic cylinder, with the piston of the pneumatic or hydraulic cylinder extending and retracting along the central axis of the valve core. The fixing components in the drive structure, such as the motor or cylinder body, can be fixed to the display base by bolts, welding, or bonding; their structure will not be described in detail here.

[0111] In addition to the aforementioned components, the digital display drive mechanism of the present invention also includes a power supply module installed within the display base for providing electrical power and a control module electrically connected to the power supply module (e.g., ...). Figure 14 (As shown). The display screen and the drive structure are electrically connected to the power module.

[0112] The control module is used to control the overall working process and can employ chips with analysis, processing, communication, and control functions, such as MCUs and CPUs, which are readily available in existing technologies. The control module is wirelessly connected to the pressure sensing element, receives pressure detection data transmitted by the element, analyzes and processes the data, and displays it on a screen for medical personnel to view. It can also output the processed data via wired or wireless means.

[0113] The control module is connected to the display screen and electrically connected to the drive structure. Users can input commands via the display screen to periodically measure intra-abdominal pressure using the pressure-sensing element, and to instruct the drive structure to operate for a predetermined duration within each cycle. Users can also input commands via the display screen to perform a single intra-abdominal pressure measurement using the pressure-sensing element, and to instruct the drive structure to operate for a predetermined duration during a single measurement. The input commands for periodically measuring intra-abdominal pressure (IBP) specify the time required for a certain number of IBP measurements within a given time period. For example, if IBP is measured 12 times within 12 hours, it is measured once every hour; if IBP is measured 6 times within 12 hours, it is measured once every 2 hours, and so on. The input commands for the drive structure to operate for a predetermined duration within each cycle specify the duration for the drive structure to perform the corresponding action within each cycle. This duration includes the total time for the output component to extend and retract. For example, when using an electrically driven structure, this is the total time from the first start of the drive structure moving the output component to a preset position, the first stop after reaching the preset position, the second start after the first stop for a preset time, the second stop after retracting the output component to its original position, etc. This time can be 1 minute or 2 minutes, etc. The start and stop times of each drive structure operation can be determined in advance through experiments according to experimental requirements. In application, the display screen can be a touch screen or a non-touch screen, with a touch screen being preferred.

[0114] The control module, based on the command input from the display screen indicating periodic intra-abdominal pressure measurement via a pressure-sensing element, controls the drive structure to periodically operate, thereby periodically blocking the flow path within the connecting pipe. During this blocking process, the intra-abdominal pressure is obtained by measuring the flow path pressure within each cycle. Specifically, within each cycle of controlling the drive structure, the control module executes the following actions: starting, driving the valve core and pressure-sensing element through the output component until the flow path in the connecting pipe is completely blocked, stopping the drive structure and maintaining the output component in its current position so that the pressure-sensing element can measure the flow path pressure in the connecting pipe for a preset duration, restarting the drive structure to return the output component (valve core return), and finally stopping the drive structure.

[0115] Alternatively, the control module, based on the command input from the display screen for a single intra-abdominal pressure measurement using a pressure-measuring element and the command for the drive structure to operate for a predetermined duration during a single measurement, controls the drive structure to operate once, blocking the flow path within the connecting tube. During this blocking process, the intra-abdominal pressure is obtained by measuring the flow path pressure. The control module's control process for the drive structure's operation is the same as the operation process of the drive structure in each cycle described above.

[0116] When the control module controls the drive structure to operate, it extends and retracts the output component of the drive structure according to preset requirements. This causes the valve core, which is in contact with the output component, to move downwards and retract accordingly. This blocks or opens the flow path in the connecting pipe for a predetermined duration, thereby achieving the purpose of detecting the flow path pressure through a pressure measuring element when the flow path in the connecting pipe is blocked, and thus obtaining the patient's intra-abdominal pressure. In the design, the output component of the drive structure extends downwards from the inner cavity of the display seat into the inner cavity of the connecting seat, and moves telescopically along the inner cavity of the connecting seat. It can abut against the upper surface of the valve core, causing the valve core to move up and down accordingly.

[0117] Furthermore, the present invention may also include an alarm module, mounted on a display base and electrically connected to a power supply module and a control module. After receiving pressure data transmitted by the pressure-sensing element, the control module compares the pressure data with pre-stored preset high and low pressure values. If the intra-abdominal pressure detected by the pressure-sensing element exceeds the preset high value or falls below the preset low value, the control module controls the alarm module to emit an alarm sound. The alarm module can be a sound or audible-visual alarm module using existing technology.

[0118] Furthermore, the present invention can also provide a data output interface, such as a USB interface, electrically connected to the control module on the display base, to export data via a USB data cable for convenient report generation. In addition, the control module can also output data in real time via wireless transmission, such as to the nurses' station, so that medical staff can receive or view it at any time.

[0119] It should be noted that the connecting pipe, valve seat, valve core, etc. of the present invention can be made of transparent material so that the flow path inside the connecting pipe and the position of the valve core and pressure measuring element can be directly viewed.

[0120] The working process of the intra-abdominal pressure measuring catheter device of the present invention will be described below:

[0121] Before measuring intra-abdominal pressure, the operator (medical staff, patient, or family member) will install the connector of the drive mechanism onto the valve seat, ensuring the output of the drive mechanism is in its initial, unactivated state. The urinary catheter is then fitted onto the anti-dislodgement connector of the connecting tube, and the drainage bag is connected to the other end of the connecting tube (using existing drainage bag connection methods). The flow path within the connecting tube is open, meaning urine is drained from the patient through the connecting tube.

[0122] The operator determines whether to use manual or automatic measurement of intra-abdominal pressure based on the actual situation.

[0123] When manual measurement of intra-abdominal pressure is required, input the command for a single intra-abdominal pressure measurement using the pressure-sensing element, along with the predetermined total duration of the drive mechanism's two start-stop cycles during a single measurement (e.g., 1.5 minutes). This activates the drive mechanism, causing the output component to extend downwards and push the valve core downwards until the valve core and pressure-sensing element completely block the urine flow path in the connecting tube. The operator disinfects the water injection connector and injects approximately 25 ml of saline solution using a syringe. Observe the pressure value detected by the pressure-sensing element on the display screen. After a period of time, such as 1 minute, when the pressure value stabilizes, observe the measurement value displayed on the screen again. This value can be considered the patient's intra-abdominal pressure. The detected intra-abdominal pressure value can be transmitted to the monitoring instrument at the nursing station, and a nursing record will be automatically generated. After the drive mechanism stops for the predetermined duration, the valve core returns to its original position, and the flow path in the connecting tube is open again, ensuring the entire urinary tract is unobstructed. After the measurement is completed, the connector of the display drive mechanism can be removed from the valve seat.

[0124] When it is determined that automatic intra-abdominal pressure measurement is required, the user inputs commands via the display screen to periodically measure intra-abdominal pressure using a pressure-sensing element, and to instruct the drive structure to operate for a predetermined duration within each cycle. For example, the periodic measurement might be performed once every hour for a period of 12 hours, with a predetermined total operation time of 1.5 minutes for the drive structure within each cycle. The drive structure will execute the first intra-abdominal pressure measurement command, causing the pressure-sensing element to perform the single measurement. The measurement result will be displayed on the screen or sent to a remote user. Simultaneously, the flow path within the connecting tube will be open. After the preset time (i.e., 1 hour), the drive structure will execute the second intra-abdominal pressure measurement command, causing the pressure-sensing element to perform another intra-abdominal pressure measurement, and so on, until all commands are executed. All pressure data during the measurement process can be displayed in real time on the screen and transmitted to the monitoring instruments at the nursing station, automatically generating nursing records for the entire cycle, etc. In addition, when used in a hospital, an alarm that is wirelessly connected to the control module can be set up at the nurse station. If the pressure data exceeds the high pressure alarm threshold or falls below the low pressure alarm threshold, the nurse station alarm will sound an alarm to indicate that the pressure is abnormal, and the nurse can then perform manual measurement again.

[0125] In summary, the intra-abdominal pressure measuring catheter device developed by the method of this invention has an on / off valve and a pressure measuring element on the connecting tube of the urinary catheter. When the on / off valve disconnects the flow path in the connecting tube, the pressure measuring element detects the urine pressure in the connecting tube, and the pressure data measured by the pressure measuring element is displayed through a digital display drive mechanism. This allows medical staff to accurately obtain the patient's intra-abdominal pressure, which is beneficial for doctors to accurately assess the patient's condition and implement feasible subsequent treatment plans. In addition, this device can be left in place and can be used for patients who need frequent intra-abdominal pressure monitoring, reducing the number of times the urinary catheter is disconnected and reconnected, which is beneficial for infection control and makes it safer to use.

[0126] Although the present invention has been described in detail above, the present invention is not limited thereto. Those skilled in the art can make modifications based on the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. A method for forming an intra-abdominal pressure measuring catheter device, comprising: A connecting tube for connecting a urinary catheter and having an on / off valve and a pressure measuring element is formed, comprising: a body for connecting the urinary catheter; an on / off valve formed on the body with its central axis perpendicular to the direction of the body's central axis for opening or closing the internal flow path of the body, including a valve seat formed on the body in a cross shape and seamlessly connected to the body, and a valve core formed within the valve seat with its central axis perpendicular to the direction of the body's central axis and capable of reciprocating within the valve seat, the valve core including a cylindrical body and a placement hole formed in the lower part of the cylindrical body and arranged radially, the shape and size of the placement hole being equal to or larger than the shape and size of the inner hole of the connecting tube, and a damping pad provided at the top of the cylindrical body; and a pressure measuring element formed within the on / off valve for obtaining the corresponding intra-abdominal pressure of the patient by measuring the pressure of urine in the body when the internal flow path of the body is closed, the pressure measuring element being placed at the placement hole of the valve core; A digital display drive mechanism, detachably connected to an on / off valve, is used to drive a pressure measuring element to reciprocate along the axial direction of a vertical connecting pipe and to display the pressure data measured by the pressure measuring element. The mechanism includes: a housing with a lower connecting seat detachably connected to the valve seat and an upper display screen for displaying the pressure data measured by the pressure measuring element; and a drive structure on the housing whose output component extends in the same direction as the valve core axis.

2. The method according to claim 1, wherein forming the body for connecting the urinary catheter comprises: An anti-dislodgement connector is formed at one end of the body to prevent the urinary catheter from slipping out when connected; A water injection connector is formed near the anti-detachment connector on the main body, which allows for the injection of physiological saline into the main body as needed.

3. The method according to claim 2, wherein the connecting seat is threadedly connected to or plugged into the valve seat.

4. According to the method of claim 3, the lower part of the columnar body of the valve core is further provided with a through hole that penetrates the columnar body radially.

5. The method according to any one of claims 1-4, wherein a spring is provided at the lower part of the valve core to allow the valve core to automatically return to its original position.

6. A urinary catheter device for measuring intra-abdominal pressure, formed using the method described in any one of claims 1-5, comprising: A connecting tube for connecting a urinary catheter and having an on / off valve and a pressure measuring element thereon; A digital display drive mechanism detachably connected to the on / off valve, used to push the pressure measuring element to reciprocate along the axial direction of the vertical connecting pipe and to display the pressure data measured by the pressure measuring element. The connecting tube includes: a body for connecting a urinary catheter; a shut-off valve on the body with its central axis perpendicular to the central axis of the connecting tube, for opening or closing the flow path within the body, including a valve seat on the body that intersects the body in a cross shape and is seamlessly connected to the body, and a valve core within the valve seat with its central axis perpendicular to the central axis of the body and capable of reciprocating within the valve seat, the valve core including a cylindrical body and a placement hole opened at the lower part of the cylindrical body and arranged radially, the shape and size of the placement hole being equal to or larger than the shape and size of the inner hole of the connecting tube, and a damping pad provided at the top of the cylindrical body; and a pressure measuring element located at the placement hole of the shut-off valve core, which measures the pressure of urine within the body when the flow path within the body is closed to obtain the corresponding intra-abdominal pressure of the patient. The digital display drive mechanism includes: a housing with a lower connecting seat detachably connected to the valve seat and an upper display screen for displaying pressure data measured by the pressure measuring element; and a drive structure mounted on the housing with its output component extending in the same direction as the valve core axis.

7. The intra-abdominal pressure measuring catheter device according to claim 6, wherein the lower part of the columnar body of the valve core is further provided with a through hole that penetrates the columnar body radially.

8. The intra-abdominal pressure measuring catheter device according to claim 6 or 7, wherein a spring is provided at the lower part of the valve core to allow the valve core to automatically return to its original position.

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