Pressure balancing device and extracorporeal circulation system

Abstract

The utility model relates to the technical field of medical treatment, and discloses a pressure balancing device and an extracorporeal circulation system, the pressure balancing device comprises a suction device suitable for sucking blood in an operation field area, the suction device comprises a suction catheter, and one end of the suction catheter is connected with the operation field area; the pressure adjusting device comprises a pressure monitor and a pressure adjuster, and the pressure monitor is connected with the suction catheter and used for detecting the suction pressure of the surgical field area; one end of the pressure regulator is communicated with the atmosphere, the other end of the pressure regulator is connected with the suction catheter, and the pressure regulator is used for regulating the suction pressure to be in a stable state. According to the pressure range detected by the pressure monitor, the pressure regulator is adjusted, so that the suction pressure of the surgical field area is in a stable state. When the condition of the patient or the operation field area changes, the suction pressure can be kept within a proper range by adjusting the pressure regulator.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a pressure balancing device and an extracorporeal circulation system. Background Art

[0002] In extracorporeal circulation heart surgery, various new technologies are constantly emerging. After decades of development, the technology has become increasingly mature both domestically and internationally. In heart surgery, extracorporeal circulation is crucial for maintaining a clear surgical field and maintaining the patient's blood circulation. Excellent extracorporeal circulation plays a significant role in improving the success rate of surgery.

[0003] During cardiac surgery, conventional techniques use a left ventricular suction device to absorb blood returning from the surgical field. However, if the suction pressure is too high, it can cause severe blood or tissue damage; if the suction pressure is too low, it can cause excessive blood return from the surgical field, interfering with the surgeon's field of vision, and in severe cases, even making the surgery impossible.

[0004] In order to overcome the above problems, the prior art discloses a left heart suction device for cardiac surgery. By arranging a one-way air valve on the suction head of the suction catheter located in the surgical field area, when the pressure in the suction catheter reaches the threshold set by the one-way air valve, the one-way air valve will open, allowing outside air to enter the suction catheter, thereby maintaining the pressure of the left heart suction device stable during the operation.

[0005] However, the production of one-way valves used in surgical procedures requires extremely strict materials and processes, resulting in high prices for left ventricular aspiration devices using this technical solution, hindering widespread clinical use. Furthermore, the one-way valves also suffer from the problem of only being able to preset a pressure threshold before surgery and not being able to adjust it during the operation based on on-site conditions. Utility Model Content

[0006] In view of this, the present invention provides a pressure balancing device and an extracorporeal circulation system to solve the problems of high cost of left ventricular suction devices and inability to adjust the pressure threshold during surgery.

[0007] In a first aspect, the present invention provides a pressure balancing device, comprising:

[0008] A suction device, adapted to draw blood from the surgical field, the suction device comprising a suction catheter, one end of which is connected to the surgical field;

[0009] A pressure regulating device, comprising a pressure monitor and a pressure regulator, wherein the pressure monitor is connected to the suction catheter and is used to detect the suction pressure in the surgical field area; one end of the pressure regulator is connected to the atmosphere, and the other end is connected to the suction catheter and is used to regulate the suction pressure to a stable state.

[0010] Beneficial effect: By connecting the pressure regulating device to the suction catheter, the pressure monitor is used to detect whether the pressure in the suction catheter is within a normal pressure range. When the pressure in the suction catheter is abnormal, the pressure in the suction catheter is balanced by adjusting the pressure regulator, so that the suction pressure in the surgical field area is in a stable state. The pressure balancing device of this solution does not require a one-way air valve to be provided on the side of the suction catheter close to the surgical field area, which reduces costs. In addition, during the operation, the pressure regulator can be adjusted at any time according to the pressure value detected by the pressure monitor. When the situation of the patient or the surgical field area changes, it can also be well responded to and the suction pressure is kept at an appropriate value.

[0011] In an optional embodiment, the pressure regulating device includes a first catheter connecting device, which includes at least three ports, wherein the first port is connected to the pressure monitor, the second port is connected to the pressure regulator, and the third port is connected to the suction catheter.

[0012] In an optional embodiment, the suction device includes a suction pump, one end of which is connected to the other end of the suction catheter;

[0013] The first conduit connection device includes three ports;

[0014] The pressure regulating device includes a second catheter connecting device, which is arranged on the suction catheter. The second catheter connecting device includes at least three ports, wherein the fourth port is connected to the surgical field area, the fifth port is connected to the third port, and the sixth port is connected to the suction pump.

[0015] In an optional embodiment, the pressure balancing device further includes: a blood return device, which is connected to the suction pump, and the blood sucked by the suction pump is input into the patient's body through the blood return device to complete the extracorporeal circulation of blood.

[0016] In an optional embodiment, the pressure monitor includes a cardioplegic pressure measuring device.

[0017] Beneficial effects: During surgery, the cardioplegic fluid pressure measuring device is usually only used for a few minutes and is idle at other times. The cardioplegic fluid pressure measuring device has a pressure detection function. Using the idle cardioplegic fluid pressure measuring device for pressure detection of the suction catheter can further reduce equipment costs and improve the utilization rate of the cardioplegic fluid pressure measuring device.

[0018] In an optional embodiment, the pressure monitor includes a pressure transducer, one end of which is connected to the first catheter connecting device, and the other end of which is connected to the cardioplegic fluid pressure measuring device.

[0019] Beneficial effect: The pressure transducer converts physical pressure into digital signals, which is suitable for realizing automatic control and monitoring of suction pressure.

[0020] In an optional embodiment, the pressure regulator is a precision infusion device, and the precision infusion device includes a regulating valve, which is suitable for adjusting the air intake amount to keep the suction pressure in a stable state.

[0021] Beneficial effect: By using the precision infusion pump in the pressure regulator and adjusting the air flux of the precision infusion pump using the regulating valve provided with the precision infusion pump, the suction pressure in the surgical field area can be kept in a stable state, which is low-cost but very efficient.

[0022] In an optional embodiment, a scale dial is provided on the regulating valve, and the scale dial is used to indicate the opening size of the regulating valve.

[0023] Beneficial effect: The dial can accurately indicate the opening size of the regulating valve, thereby realizing adjustment of the regulating valve in a subdivided scale manner, which can well quantify the specific amount of adjustment and more flexibly and accurately control the specific value of the suction pressure.

[0024] In an optional embodiment, an air filter is further provided on the side of the precision infusion pump close to the atmosphere.

[0025] Beneficial effect: By setting up an air filter, the air input into the precision infusion device is purified, preventing dust and other foreign matter from clogging the pipeline, extending the service life of the equipment and reducing the maintenance cost of the equipment.

[0026] In a second aspect, the utility model provides an extracorporeal circulation system suitable for extracorporeal circulation of blood during cardiac surgery, comprising the above-mentioned pressure balancing device.

[0027] Beneficial effects: Since the extracorporeal circulation system includes the above-mentioned pressure balancing device, it has the same effects as the above-mentioned pressure balancing device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a structural schematic diagram of a pressure balancing device according to an embodiment of the present utility model.

[0030] Description of reference numerals:

[0031] 1. Suction pump; 2. Suction catheter; 3. Precision infusion set; 4. Scale plate; 5. Bottle insertion needle; 6. Second catheter connection device; 7. Surgical field area; 8. Blood return device; 9. First catheter connection device; 10. Pressure transducer; 11. Cardioplegic fluid pressure measuring device. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0033] The following combination Figure 1 , describing the embodiments of the present utility model.

[0034] According to an embodiment of the present invention, on the one hand, the present invention provides a pressure balancing device, including: a suction device, suitable for sucking blood in the surgical field area 7, the suction device includes a suction catheter 2, one end of the suction catheter 2 is connected to the surgical field area 7; a pressure regulating device, the pressure regulating device includes a pressure monitor and a pressure regulator, the pressure monitor is connected to the suction catheter 2, and is used to detect the suction pressure of the surgical field area 7; one end of the pressure regulator is connected to the atmosphere, and the other end is connected to the suction catheter 2, and is used to adjust the suction pressure to a stable state.

[0035] By connecting the pressure regulating device to the suction catheter 2, the pressure in the suction catheter 2 is detected by the pressure monitor to see if it is within the normal pressure range. When the pressure in the suction catheter 2 is abnormal, the pressure in the suction catheter 2 is balanced by adjusting the pressure regulator, thereby stabilizing the suction pressure in the surgical field area 7. This solution eliminates the need for a one-way air valve on the side of the suction catheter 2 close to the surgical field area 7, thus reducing costs. Furthermore, during surgery, the pressure regulator can be adjusted at any time based on the pressure value detected by the pressure monitor, thereby adjusting the suction pressure in the surgical field area 7. This allows for good response to changes in the patient's or the surgical field area 7's condition, maintaining the suction pressure at an appropriate value.

[0036] In this embodiment, the pressure regulating device includes a first catheter connecting device 9, which includes three ports: the first port is connected to the pressure monitor, the second port is connected to the pressure regulator, and the third port is connected to the suction catheter 2. The suction device includes a suction pump 1, one end of which is connected to the other end of the suction catheter 2; the pressure regulating device includes a second catheter connecting device 6, which is provided on the suction catheter 2 and includes three ports: the fourth port is connected to the surgical field area 7, the fifth port is connected to the third port, and the sixth port is connected to the suction pump 1.

[0037] Specifically, the second conduit connection device 6 and the first conduit connection device 9 are both tees, and the size of each port of the tee is 1 / 4 inch. The size and specific structure of the port can be flexibly set according to actual needs, such as threaded ports, plug ports, etc., and no excessive restrictions are made here.

[0038] In other optional embodiments, only the first catheter connecting device 9 can be provided, and the first catheter connecting device 9 includes four ports, wherein the first port is connected to the pressure monitor, the second port is connected to the pressure regulator, the third port is connected to the surgical field area 7, and the fourth port is connected to the suction pump 1. Of course, the specific connection method of the pressure monitor, the pressure regulator, and the suction catheter 2 can also be flexibly adjusted according to actual needs. If other equipment needs to be connected, the number of ports can also be flexibly adjusted. All configuration methods that can connect them to each other can be used in this application, and there are no excessive restrictions here.

[0039] In this embodiment, the pressure monitor includes a cardioplegic pressure measuring device 11. During surgery, the cardioplegic pressure measuring device 11 is typically only used for a few minutes and is otherwise idle. However, the cardioplegic pressure measuring device 11 has a pressure detection function. Using the idle cardioplegic pressure measuring device 11 for pressure detection of the suction catheter 2 can further reduce equipment costs and improve utilization of the cardioplegic pressure measuring device 11.

[0040] In other optional implementations, the pressure monitor includes other commonly used pressure monitoring devices such as a pressure gauge, and no further restrictions are placed on the specific pressure detection method.

[0041] In this embodiment, the pressure balancing device further includes: a blood return device 8, which is connected to the suction pump 1. The blood sucked by the suction pump 1 is input into the patient's body through the blood return device 8 to complete the extracorporeal circulation of blood.

[0042] Specifically, the blood reinfusion device 8 includes a pulmonary membrane blood storage tank.

[0043] In this embodiment, the pressure monitor includes a pressure transducer 10, one end of which is connected to the first catheter connection device 9 and the other end is connected to the cardioplegic pressure measuring device 11. The pressure transducer 10 converts physical pressure into a digital signal, which is suitable for realizing automated control and monitoring of suction pressure.

[0044] In this embodiment, the pressure regulator is a precision infusion set 3, which includes a regulating valve adapted to adjust the amount of air drawn into the set 3 to maintain a stable suction pressure. By using the precision infusion set 3 in the pressure regulator and adjusting the amount of air drawn into the set 3 using the regulating valve, the suction pressure in the surgical field can be kept stable, resulting in a low-cost yet highly efficient solution.

[0045] In other optional embodiments, the pressure regulator may also be configured to include an electrically controlled valve, which automatically adjusts the opening size according to the pressure value measured by the pressure monitor, thereby automatically controlling the suction pressure to be in a stable state.

[0046] In this embodiment, a dial 4 is provided on the regulating valve for indicating the opening size of the regulating valve. The dial 4 can accurately indicate the opening size of the regulating valve, thereby enabling adjustment of the regulating valve in a fine-scale manner, which can well quantify the specific amount of adjustment and more flexibly and accurately control the specific value of the suction pressure.

[0047] In this embodiment, the opening size of the regulating valve is adjusted by rotating the dial 4. In an optional embodiment, a rotating device is provided on the regulating valve for adjusting the opening size of the regulating valve.

[0048] In this embodiment, a bottle insertion needle 5 is provided on the side of the precision infusion device 3 close to the atmosphere.

[0049] In other optional embodiments, an air filter is further provided on the side of the precision infusion set 3 that is close to the atmosphere. By providing the air filter, the air input into the precision infusion set 3 is purified, dust and other foreign matter are prevented from clogging the pipeline, the service life of the device is extended, and the maintenance cost of the device is reduced.

[0050] According to an embodiment of the present invention, on the other hand, an extracorporeal circulation system is provided, which is suitable for extracorporeal circulation of blood during cardiac surgery and includes the above-mentioned pressure balancing device. The extracorporeal circulation system has the same effect as the above-mentioned pressure balancing device and will not be described in detail here.

[0051] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A pressure balancing device, characterized in that: include: A suction device, adapted to suction blood from an operating field area (7), the suction device comprising a suction catheter (2), one end of the suction catheter (2) being connected to the operating field area (7); A pressure regulating device, comprising a pressure monitor and a pressure regulator, wherein the pressure monitor is connected to the suction catheter (2) and is used to detect the suction pressure of the surgical field area (7); one end of the pressure regulator is connected to the atmosphere, and the other end is connected to the suction catheter (2) and is used to regulate the suction pressure to a stable state.

2. The pressure balancing device according to claim 1, characterized in that: The pressure regulating device comprises a first catheter connecting device (9), wherein the first catheter connecting device (9) comprises at least three ports, wherein the first port is connected to the pressure monitor, the second port is connected to the pressure regulator, and the third port is connected to the suction catheter (2).

3. The pressure balancing device according to claim 2, characterized in that: The suction device comprises a suction pump (1), one end of the suction pump (1) is connected to the other end of the suction catheter (2); The first conduit connection device (9) comprises three ports; The pressure regulating device includes a second catheter connecting device (6), which is provided on the suction catheter (2). The second catheter connecting device (6) includes three ports, wherein the fourth port is connected to the surgical field area (7), the fifth port is connected to the third port, and the sixth port is connected to the suction pump (1).

4. The pressure balancing device according to claim 3, characterized in that: Also includes: A blood reinfusion device (8) is connected to the suction pump (1), and the blood drawn by the suction pump (1) is input into the patient's body through the blood reinfusion device (8), completing the extracorporeal circulation of the blood.

5. The pressure balancing device according to any one of claims 2 to 4, characterized in that: The pressure monitor comprises a cardioplegic pressure measuring device (11).

6. The pressure balancing device according to claim 5, characterized in that: The pressure monitor comprises a pressure transducer (10), one end of which is connected to the first catheter connection device (9), and the other end of which is connected to the cardioplegic fluid pressure measuring device (11).

7. The pressure balancing device according to any one of claims 1 to 4, characterized in that: The pressure regulator is a precision infusion device (3), and the precision infusion device (3) comprises a regulating valve, and the regulating valve is suitable for regulating the air intake amount so that the suction pressure is in a stable state.

8. The pressure balancing device according to claim 7, characterized in that: The regulating valve is provided with a scale plate (4), and the scale plate (4) is used to indicate the opening size of the regulating valve.

9. The pressure balancing device according to claim 8, characterized in that: An air filter is also provided on the side of the precision infusion device (3) close to the atmosphere.

10. An extracorporeal circulation system suitable for extracorporeal circulation of blood during cardiac surgery, characterized in that: The invention comprises the pressure balancing device according to any one of claims 1 to 9.

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