Extracorporeal circulation pressure measuring device

Abstract

The utility model relates to the technical field of extracorporeal circulation pressure detection, and discloses an extracorporeal circulation pressure measuring device which comprises a shell. The pressure measuring units are arranged in the shell, the number of the pressure measuring units is at least two, and the pressure measuring units are used for converting pressure signals into electric signals; and the pressure measuring interfaces are arranged outside the shell, one ends of the pressure measuring interfaces are connected with the pressure measuring units and are in one-to-one correspondence with the pressure measuring units, and the other ends of the pressure measuring interfaces are used for being connected with a device to be measured. By arranging at least two pressure measuring units and pressure measuring interfaces and integrating the pressure measuring units and the pressure measuring interfaces in the extracorporeal circulation pressure measuring device, the extracorporeal circulation pressure measuring device can detect pressure values of at least two point positions. On the basis, a plurality of independent extracorporeal circulation pressure measuring devices do not need to be carried or moved, so that the technical effect of improving the use convenience of the extracorporeal circulation pressure measuring device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of extracorporeal circulation pressure detection, in particular to an extracorporeal circulation pressure measuring device. Background Art

[0002] Extracorporeal circulation is a life support technology that uses a series of special artificial devices to drain the venous blood returning to the heart to the outside of the body, and after artificial gas exchange, temperature regulation, and filtration, it is then transfused back into the arterial system of the body. During this process, multi-point pressure detection is required to improve the safety and reliability of extracorporeal circulation.

[0003] The existing multi-point pressure detection method usually sets independent extracorporeal circulation pressure measuring devices for multiple points respectively, that is, multiple extracorporeal circulation pressure measuring devices need to be set. This measurement method increases the complexity of the use of extracorporeal pressure measuring devices, and occupies multiple spaces in the operating room, resulting in a relatively large volume of the entire extracorporeal pressure measuring device. Summary of the Utility Model

[0004] In view of this, the utility model provides an extracorporeal circulation pressure measuring device to solve the problems that the existing multi-point pressure detection method increases the complexity of the use of extracorporeal pressure measuring devices, occupies multiple spaces in the operating room, and leads to an increase in the installation volume required for the entire extracorporeal pressure measuring device.

[0005] An extracorporeal circulation pressure measuring device includes:

[0006] A housing;

[0007] A pressure measurement unit is arranged in the housing, and there are at least two pressure measurement units for converting a pressure signal into an electrical signal;

[0008] A pressure measurement interface is arranged outside the housing. One end of the pressure measurement interface is connected to the pressure measurement unit and is arranged in one-to-one correspondence with the pressure measurement unit. The other end of the pressure measurement interface is used to connect to a device to be measured and transmit the pressure signal of the device to be measured collected to the pressure measurement unit.

[0009] Advantageous Effects: By setting at least two pressure measurement units and pressure measurement interfaces and integrating them into the extracorporeal circulation pressure measuring device, the extracorporeal circulation pressure measuring device can detect the pressure values at at least two points. Based on this, there is no need to carry or move multiple independent extracorporeal circulation pressure measuring devices, thereby achieving the technical effect of improving the simplicity of use of the extracorporeal pressure measuring device. At the same time, by designing the placement method of at least two pressure measurement units in the housing, specifically, adding stacked pressure measurement units, compared with multiple independent extracorporeal circulation pressure measuring devices, the extracorporeal circulation pressure measuring device in the utility model can achieve the technical effect of reducing the floor area required for installation and reducing the limitation of the space of the use scenario.

[0010] In an alternative embodiment, the extracorporeal circulation pressure measuring device includes:

[0011] A controller, connected to at least two of the pressure measuring units, for converting the electrical signals transmitted by the at least two pressure measuring units into digital signals.

[0012] Advantageous effects: By providing one controller, at least two pressure measuring units can be controlled. Compared with setting up multiple independent extracorporeal circulation pressure measuring devices, the number of controllers used can be reduced, thereby achieving the technical effect of cost savings.

[0013] In an alternative embodiment, the extracorporeal circulation pressure measuring device includes:

[0014] A display unit, disposed outside the housing and connected to the controller, for displaying the pressure value.

[0015] Advantageous effects: By providing a display unit, the controller can present the measured pressure value in digital form on the display unit, improving the simplicity and intuitiveness of observing the pressure value.

[0016] In an alternative embodiment, the display unit includes:

[0017] A plurality of display screens, which are arranged in one-to-one correspondence with the pressure measuring units.

[0018] Advantageous effects: By providing a plurality of display screens and arranging them in one-to-one correspondence with the pressure measuring units, each display screen can display one pressure value to distinguish each pressure value, further achieving the technical effect of improving the intuitiveness of observing the pressure value.

[0019] In an alternative embodiment, the pressure measuring unit includes:

[0020] A pressure transducer, connected to one side of the pressure measuring interface, for measuring the pressure value and converting the pressure signal into an electrical signal;

[0021] A barrier element, connected between the other side of the pressure measuring interface and the device to be measured, for isolating the liquid.

[0022] Advantageous effects: By providing a barrier element, liquids such as blood can be blocked outside the extracorporeal circulation pressure measuring device, allowing only gas to enter the pressure transducer through the barrier element and the pressure measuring interface, avoiding the influence of the liquid on the detection result, and thus achieving the technical effect of improving the accuracy of pressure value detection.

[0023] In an alternative embodiment, six pressure transducers are provided, three of which are used to measure positive pressure values; the other three pressure transducers are used to measure negative pressure values.

[0024] Advantageous effects: By measuring both positive and negative pressure values, the comprehensiveness of the detection of pressure value types during the operation of extracorporeal circulation can be improved, and three different types of positive pressure values and three different types of negative pressure values can be measured simultaneously by this device without the need to additionally increase the extracorporeal circulation pressure measuring device, thereby achieving the technical effect of improving the simplicity of pressure value measurement during the extracorporeal circulation operation.

[0025] In an alternative embodiment, the positive pressure values measured by the three pressure transducers include: the post-membrane pressure value of extracorporeal circulation technology, the pre-membrane pressure value of extracorporeal circulation technology, and the cardioplegia perfusion pressure value;

[0026] And / or, the negative pressure values measured by the three pressure transducers include: the negative pressure value of left heart drainage during extracorporeal circulation, the negative pressure value of the blood storage tank of the membrane lung during negative pressure assisted venous drainage, and the negative pressure value of the main venous trunk during negative pressure assisted venous drainage.

[0027] Advantageous effects: By detecting the pre-membrane pressure value of extracorporeal circulation technology, the negative pressure value of left heart drainage during extracorporeal circulation, and the negative pressure value of the main venous trunk during negative pressure assisted venous drainage, the shortcoming of the types of pressure values measured in domestic cardiac centers during extracorporeal circulation technology can be made up for, so that the detection of the post-membrane pressure value, the cardioplegia perfusion pressure value, and the cardioplegia perfusion pressure value in cooperation with extracorporeal circulation technology can improve the types of pressure value detection, so as to achieve the technical effect of improving the safety during the extracorporeal circulation operation.

[0028] In an alternative embodiment, the pressure transducer is a reusable transducer.

[0029] Advantageous effects: By setting the pressure transducer as a reusable transducer, the consumption speed of the pressure transducer can be reduced, and the replacement frequency of the pressure transducer can be lowered, thereby achieving the technical effect of cost savings.

[0030] In an alternative embodiment, the barrier element is a pressure barrier for isolating the liquid when measuring the positive pressure value;

[0031] And / or, the barrier element is a Luer connector for isolating the liquid when measuring the negative pressure value.

[0032] Beneficial effects: By providing a pressure barrier, blood can be blocked when measuring the positive pressure value. Moreover, this pressure barrier is a disposable pressure barrier manufactured domestically. Compared with the imported disposable pressure barriers used in existing extracorporeal circulation pressure measurement devices, under the premise of achieving the same blocking accuracy, the domestically manufactured pressure barrier has a lower cost, thus achieving the technical effect of reducing the manufacturing cost of this extracorporeal circulation pressure measurement device. When measuring the negative pressure value, the isolation of the liquid can be achieved through a Luer connector, which can achieve the technical effect of improving the reliability of liquid isolation.

[0033] In an alternative embodiment, the extracorporeal circulation pressure measurement device includes:

[0034] A zero calibration button, located outside the housing and connected to the pressure measurement unit.

[0035] Beneficial effects: By providing a zero calibration button, the pressure measurement unit can be zero-adjusted, which can eliminate the influence on the accuracy of pressure value measurement during the installation process, thus achieving the technical effect of improving the pressure detection accuracy of this extracorporeal circulation pressure measurement device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 It is a schematic structural diagram of the extracorporeal circulation pressure measurement device of this embodiment;

[0038] Figure 2 It is a schematic connection block diagram of the pressure measurement unit, pressure measurement interface, and controller of this embodiment;

[0039] Figure 3 It is a schematic structural diagram of the assembly of the barrier element, connecting arm, and pressure transducer in this embodiment.

[0040] Description of the reference numerals:

[0041] 101, pressure transducer;

[0042] 102, barrier element; 10211, first connecting rod; 10212, second connecting rod; 10213, spring; 10214, clamping block; 1022, conversion tube;

[0043] 2, pressure measurement interface; 3, controller; 4, housing; 51, display screen; 6, zero calibration button. Detailed Implementation Manner

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0045] The following combines Figures 1 to 3 to describe the embodiments of the present utility model.

[0046] According to an embodiment of the present utility model, an extracorporeal circulation pressure measuring device is provided, including:

[0047] A housing 4;

[0048] A pressure measuring unit, disposed inside the housing 4, and there are at least two pressure measuring units, which are used to convert a pressure signal into an electrical signal;

[0049] A pressure measuring interface 2, disposed outside the housing 4, one end of the pressure measuring interface 2 is connected to the pressure measuring unit and is arranged in one-to-one correspondence with the pressure measuring unit, and the other end of the pressure measuring interface 2 is used to be connected to a device to be measured, and transmit the collected pressure signal of the device to be measured to the pressure measuring unit.

[0050] Wherein, in this embodiment, the device to be measured is an extracorporeal circulation system. As an alternative implementation manner, it may also be that the device to be measured is other devices that need to measure pressure, and no more restrictions are made here.

[0051] In the extracorporeal circulation pressure measuring device of this embodiment, by setting no less than two pressure measuring units and the pressure measuring interface 2 and integrating them inside the housing 4 of the extracorporeal circulation pressure measuring device, the extracorporeal circulation pressure measuring device can detect the pressure values at at least two points. Based on this, there is no need to carry or move multiple independent extracorporeal circulation pressure measuring devices, thereby achieving the technical effect of improving the simplicity of use of the extracorporeal pressure measuring device. At the same time, by designing the positions of at least two pressure measuring units inside the housing 4, specifically, additional stacked pressure measuring units can be added, so that compared with multiple independent extracorporeal circulation pressure measuring devices, the extracorporeal circulation pressure measuring device can achieve the technical effect of reducing the required installation floor area.

[0052] In addition, as shown in combination with Figure 2 the pressure measuring unit includes:

[0053] A pressure transducer 101, connected to one side of the pressure measuring interface 2, used for measuring the pressure value and converting the pressure signal into an electrical signal.

[0054] A barrier element 102 is connected between the other side of the pressure measurement interface 2 and the device under test, which is used to isolate the liquid. Herein, the device under test is an extracorporeal circulation system.

[0055] Based on this, by setting the barrier element 102, liquids such as blood can be blocked outside the extracorporeal circulation pressure measurement device, and only gas can enter the pressure transducer 101 through the barrier element 102 and the pressure measurement interface 2, avoiding the influence of the liquid on the pressure measurement result, thereby achieving the technical effect of improving the accuracy of the pressure transducer 101 in detecting the pressure value.

[0056] Combined Figure 2 As shown, preferably, in this embodiment, there are six pressure transducers 101, among which three pressure transducers 101 are used to measure the positive pressure value, and the other three pressure transducers 101 are used to measure the negative pressure value. Based on this, the extracorporeal circulation pressure measurement device can measure both the positive pressure value and the negative pressure value, which can improve the comprehensiveness of the measurement of the pressure value types during the extracorporeal circulation operation.

[0057] At the same time, the device can measure three different types of positive pressure values and three different types of negative pressure values, realizing the simultaneous detection of three positive pressure values and three negative pressure values. Based on this, there is no need to additionally increase the extracorporeal circulation pressure measurement device, thereby achieving the technical effect of improving the simplicity of the pressure value measurement during the extracorporeal circulation operation.

[0058] Of course, in other embodiments, the number of the pressure transducers 101 can also be adjusted according to different designs and actual needs. At the same time, the number of the pressure transducers 101 for measuring the positive pressure value and the negative pressure value can also be adjusted, which is not limited herein.

[0059] Specifically, in this embodiment, the positive pressure values measured by the three pressure transducers 101 include: the post-membrane pressure value of the extracorporeal circulation technology, the pre-membrane pressure value of the extracorporeal circulation technology, and the cardioplegia perfusion pressure value. The negative pressure values measured by the three pressure transducers 101 include: the negative pressure value of the left heart drainage during extracorporeal circulation, the negative pressure value of the blood storage tank of the membrane lung during negative pressure assisted venous drainage, and the negative pressure value of the total venous trunk during negative pressure assisted venous drainage.

[0060] By detecting the pre-membrane pressure value of the extracorporeal circulation technology, the negative pressure value of the left heart drainage during extracorporeal circulation, and the negative pressure value of the total venous trunk during negative pressure assisted venous drainage, the shortcoming of the types of pressure values measured in the domestic cardiac centers in the extracorporeal circulation technology can be made up for, and the detection of the post-membrane pressure value, the cardioplegia perfusion pressure value, and the cardioplegia perfusion pressure value in the extracorporeal circulation technology can be realized, which can improve the types of pressure value monitoring, so as to achieve the improvement of the safety during the use of the extracorporeal circulation system.

[0061] Of course, in other embodiments, the types of positive pressure value and negative pressure value detection can also be adjusted and replaced as needed.

[0062] In addition, in this embodiment, along Figure 1 the vertical direction shown, the six pressure transducers 101 are arranged in two rows. Based on this, the floor area of the device is adjusted from the floor area of the six pressure transducers 101 to the floor area of three pressure transducers 101, which can reduce the space occupied by the device in the operating room, thereby achieving the technical effect of reducing the strictness of the device for the use space.

[0063] Of course, in other embodiments, the floor area of the six pressure transducers 101 can also be adjusted. For example, the six pressure transducers 101 are arranged in three rows. Based on this, the technical effect of further reducing the floor area of the device can be achieved. In this embodiment, by arranging the six pressure transducers 101 in two upper and lower rows, the dimensions of the device in the length direction, width direction, and height direction are relatively balanced, thereby achieving the technical effect of improving the placement stability of the device.

[0064] In addition, preferably, the pressure transducer 101 is a reusable transducer. Based on this, the consumption speed of the pressure transducer 101 can be reduced, and the replacement frequency of the pressure transducer 101 can be lowered to save costs.

[0065] In addition, in this embodiment, the barrier element 102 equipped with the pressure transducer 101 for measuring the positive pressure value is a pressure barrier, which is used to isolate the liquid when measuring the positive pressure value;

[0066] The barrier element 102 equipped with the pressure transducer 101 for measuring the negative pressure value is a Luer connector, which is used to isolate the liquid when measuring the negative pressure value.

[0067] By setting the pressure barrier, when measuring the positive pressure value, the blood can be blocked, and the pressure barrier is a disposable pressure barrier manufactured in China. Compared with the imported disposable pressure barrier used in the existing extracorporeal circulation pressure measurement device, under the premise of achieving the same blocking accuracy, the pressure barrier manufactured in China has a low cost, thereby achieving the technical effect of reducing the use cost of the extracorporeal circulation pressure measurement device. When measuring the negative pressure value, the liquid is isolated through the Luer connector, avoiding the liquid entering the pressure transducer 101 during the negative pressure measurement process, thereby achieving the technical effect of improving the reliability of liquid isolation.

[0068] Of course, in other embodiments, only a pressure barrier or a Luer connector can be set according to the different types of measured pressure values of the device.

[0069] In addition, in this embodiment, the barrier element 102 includes a left housing;

[0070] The right housing, which is connected to the left housing to form an outer housing with a hollow internal structure.

[0071] The barrier film is fixedly connected inside the hollow structure formed by the left housing and the right housing and is arranged parallel to the plane where the left housing and the right housing are connected.

[0072] The three-way valve is connected to the left housing through a connector, and the three-way valve is used to connect to an extracorporeal circulation system.

[0073] The conversion pipe 1022 is used for the communication between the right housing and the pressure measurement interface 2. Among them, one end of the conversion pipe 1022 is provided with a thread and is threadedly connected to the right housing, and the other end of the conversion pipe 1022 is detachably connected to the pressure measurement interface 2. Based on this, the technical effect of improving the connection stability between the conversion pipe 1022 and the right housing can be achieved through the threaded connection, and the technical effect of facilitating the disassembly, installation and replacement of the conversion pipe 1022 can be achieved through the detachable connection between the conversion pipe 1022 and the pressure measurement interface 2.

[0074] Through the design of this pressure barrier, it is possible to achieve the barrier of liquid during the use of the extracorporeal circulation pressure measurement device without using an imported pressure barrier, thereby achieving the technical effect of cost savings.

[0075] Among them, as shown in combination Figure 3 In this embodiment, one end of the conversion pipe 1022 connected to the pressure measurement interface 2 is provided with a connecting arm, and the pressure measurement interface 2 is correspondingly provided with a card slot. Through the clamping between the connecting arm and the card slot, the detachable connection between the conversion pipe 1022 and the pressure measurement interface 2 is realized. At least two connecting arms are provided and are arranged at intervals along the circumference of the pressure measurement interface 2.

[0076] Specifically, each connecting arm includes:

[0077] The first connecting rod 10211 is hinged to the conversion pipe 1022.

[0078] The second connecting rod 10212 is hinged to one end of the first connecting rod 10211, and the other end can be inserted into the card slot provided on the pressure measurement interface 2 to form the clamping of the conversion pipe 1022 and the pressure measurement interface 2.

[0079] The spring 10213 is connected between the conversion pipe 1022 and the second connecting rod 10212. In the initial state, the spring 10213 is in a compressed state, so that the second connecting rod 10212 can be located in the card slot.

[0080] In this embodiment, the second connecting rod 10212 is provided with a sickle-shaped clamping block 10214, and the tip of the clamping block 10214 can be located in the card slot.

[0081] Of course, in other embodiments, an annular clamping block 10214 is provided on the second connecting rod 10212, and the surface of the clamping block 10214 is lower than the depth of the clamping groove, which can improve the technical effect of the stability of the clamping connection between the clamping block 10214 and the clamping groove.

[0082] In this embodiment, the installation process and working process of the barrier element 102 are as follows: First, the conversion tube 1022 is inserted into the pressure measuring interface 2. Then, each second connecting rod 10212 expands outwards. At this time, the spring 10213 is in a stretched state. After releasing the hand, the clamping block 10214 in the second connecting rod 10212 is automatically inserted into the clamping groove of the pressure measuring interface 2 under the driving of the elastic force of the spring 10213, completing the clamping between the conversion tube 1022 and the pressure measuring interface 2. At the same time, the three-way valve is connected to the extracorporeal circulation system, so that the pressure of the extracorporeal circulation system is input into the interior of the barrier element 102 through the three-way valve and the joint. The barrier film deforms under the action of the pressure and compresses the air in the hollow structure formed by the left shell and the right shell, so that the pressure in the extracorporeal circulation system is conducted to the pressure transducer 101 through the conversion tube 1022, and the technical effect of blocking the liquid is achieved through the barrier film.

[0083] Of course, in other embodiments, the conversion tube 1022 can also be fixed to the pressure measuring interface 2 through a threaded connection between the conversion tube 1022 and the pressure measuring connection. Compared with the threaded connection in other embodiments, in this embodiment, by setting the connecting arm, not only can the connection stability between the conversion tube 1022 and the pressure measuring interface 2 be ensured, but also the installation and fixation between the conversion tube 1022 and the pressure measuring interface 2 can be realized more quickly.

[0084] In addition, the extracorporeal circulation pressure measuring device further includes: a controller 3, connected to at least two pressure measuring units, for converting the electrical signals transmitted by the at least two pressure measuring units into digital signals and transmitting the digital signals to the display unit for display. By setting one controller 3, six pressure measuring units can be controlled. Compared with six independent extracorporeal circulation pressure measuring devices, the number of controllers 3 used can be reduced, thereby achieving the technical effect of cost savings.

[0085] In addition, the extracorporeal circulation pressure measuring device further includes:

[0086] A display unit, provided outside the housing 4 and connected to the controller 3, for displaying the pressure value. Based on this, the measured pressure value can be presented in digital form on the display unit, which can improve the simplicity and intuitiveness of observing the pressure value.

[0087] Among them, in this embodiment, the display unit includes:

[0088] Six display screens 51 are provided, and the display screens 51 are arranged in one-to-one correspondence with the pressure measurement units. Based on this, a pressure value is displayed on each display screen 51, enabling the pressure values measured by each pressure measurement unit to be distinguished, thereby further achieving the technical effect of enhancing the intuitiveness of observing the pressure value.

[0089] Specifically, the display screen 51 and the pressure measurement interface 2 can be numbered so that the display screen 51 and the pressure measurement interface 2 can form a correspondence. For example, both the display screen 51 and the pressure measurement interface 2 are numbered according to the numbers 1-6. When the extracorporeal circulation system is connected to the pressure measurement interface 2 numbered 1, the display screen 51 numbered 1 displays the corresponding pressure value.

[0090] Certainly, in other embodiments, the pressure measurement interface 2 can also be set to different colors. Correspondingly, the display screen 51 has marks of different colors. By corresponding the color of the pressure measurement interface 2 with the color of the mark on the display screen 51, that is, the color of the pressure measurement interface 2 is the same as the color of the mark on the display screen 51, the technical effect of enhancing the intuitiveness of observing the pressure value can also be achieved.

[0091] In addition, the extracorporeal circulation pressure measurement device further includes: a zero calibration button 6, which is located outside the housing 4 and is connected to the pressure measurement unit. Based on this, the pressure measurement unit can be calibrated and adjusted as needed to eliminate the influence on the measurement accuracy of the pressure value during the installation process, thereby achieving the technical effect of improving the detection accuracy of the extracorporeal circulation pressure measurement device.

[0092] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An extracorporeal circulation pressure measuring device, characterized in that, Comprising: A housing (4); A pressure measurement unit, disposed within the housing (4), with at least two pressure measurement units provided for converting pressure signals into electrical signals; A pressure measurement interface (2), disposed outside the housing (4), one end of the pressure measurement interface (2) being connected to the pressure measurement unit and corresponding to the pressure measurement unit one by one, and the other end of the pressure measurement interface (2) being used for connection to a device under test to transmit the pressure signal of the device under test collected to the pressure measurement unit.

2. The extracorporeal circulation pressure measuring device according to claim 1, wherein Comprising: A controller (3), connected to at least two of the pressure measurement units, for converting the electrical signals transmitted by the at least two pressure measurement units into digital signals.

3. The extracorporeal circulation pressure measuring device according to claim 2, wherein, Comprising: A display unit, disposed outside the housing (4) and connected to the controller (3), for displaying pressure values.

4. The extracorporeal circulation pressure measuring device according to claim 3, characterized in that, The display unit comprises: A plurality of display screens (51), the display screens (51) corresponding to the pressure measurement units one by one.

5. The extracorporeal circulation pressure measuring device according to any one of claims 1-4, characterized in that, The pressure measurement unit comprises: A pressure transducer (101), connected to one side of the pressure measurement interface (2), for measuring pressure values and converting pressure signals into electrical signals; A barrier element (102), connected between the other side of the pressure measurement interface (2) and the device under test, for isolating liquid.

6. The extracorporeal circulation pressure measuring device according to claim 5, characterized in that, Six of the pressure transducers (101) are provided, with three of the pressure transducers (101) for measuring positive pressure values; and the other three pressure transducers (101) for measuring negative pressure values.

7. The extracorporeal circulation pressure measuring device according to claim 6, wherein, The positive pressure values measured by the three pressure transducers (101) include: the post-membrane pressure value of extracorporeal circulation technology, the pre-membrane pressure value of extracorporeal circulation technology, and the cardioplegia perfusion pressure value; And / or, the negative pressure values measured by the three pressure transducers (101) include: the negative pressure value of left heart drainage during extracorporeal circulation, the negative pressure value of the blood storage tank of the membrane lung during negative pressure-assisted venous drainage, and the negative pressure value of the main venous trunk during negative pressure-assisted venous drainage.

8. The extracorporeal circulation pressure measuring device according to claim 5, characterized in that, The pressure transducer (101) is a reusable transducer.

9. The extracorporeal circulation pressure measuring device according to claim 5, characterized in that, The barrier element (102) is a pressure barrier for isolating liquid when measuring positive pressure values; And / or, the barrier element (102) is a Luer connector for isolating liquid when measuring negative pressure values.

10. The extracorporeal circulation pressure measuring device according to any one of claims 1-4, characterized in that, Comprising: A zero calibration button (6), located outside the housing (4) and connected to the pressure measurement unit.

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