Blood vessel bursting pressure testing device of ultrasonic knife

Abstract

The invention relates to the technical field of medical instruments, in particular to an ultrasonic knife blood vessel bursting pressure testing device. An ultrasonic knife blood vessel bursting pressure testing device comprises a pressure generating module and a pressure collecting module, the pressure generating module comprises a pump body, one end of the pump body is connected with a liquid storage container, and the other end of the pump body is connected with a connector used for being connected with a blood vessel to be tested through a first communicating pipe; the pressure collecting module comprises a pressure detector arranged on the first communicating pipe, the pressure collecting device is characterized by further comprising a control module electrically connected with the pump body, the pump body is communicated with the liquid storage container through a second communicating pipe, a first one-way valve is arranged on the second communicating pipe, and a second one-way valve is arranged on the second communicating pipe. The pump body is communicated with the first communicating pipe and the third communicating pipe through the switching valve, and a water outlet is formed in the end, away from the pump body, of the third communicating pipe. The ultrasonic knife head testing device has the advantages that the testing precision and stability can be improved, and a reliable testing tool is provided for performance improvement of the ultrasonic knife head.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an ultrasonic knife blood vessel bursting pressure testing device. Background Art

[0002] With the development and progress of science and technology, in various fields of surgical operations, more and more minimally invasive surgeries are used. Minimally invasive surgeries have the advantages of less trauma, less pain, faster recovery, shorter hospitalization time and less bleeding. In the development process of ultrasonic scalpel heads for ultrasonic soft tissue surgical equipment, the vascular bursting pressure test is very important, which affects the key performance of the ultrasonic scalpel heads.

[0003] For example, the technical solutions disclosed in patents with publication numbers CN103300817A and CN218938006U connect the blood vessel to be tested to a connecting tube, pump physiological saline into the blood vessel to be tested, and then use a pressure collection instrument such as a pressure gauge located on the connecting tube to detect the pressure when the blood vessel bursts, thereby obtaining the blood vessel bursting pressure.

[0004] However, when the existing solution is used, gas may enter the pump body due to insufficient saline in the liquid storage container, and thus gas may enter the connecting tube. After the gas enters the connecting tube, it will occupy part of the volume, resulting in a decrease in the actual liquid volume and a change in the pressure distribution, which will make the pressure gauge reading unable to accurately reflect the real pressure in the blood vessel, resulting in a high or low test result; and the gas is easily compressed and expanded in the tube. When liquids such as saline are pumped in, the gas will cause pressure fluctuations, making the pressure value recorded by the pressure acquisition instrument unstable, making it difficult to accurately capture the real pressure at the moment of blood vessel rupture, and thus unable to accurately evaluate the performance improvement of the ultrasonic knife head. Summary of the invention

[0005] The object of the present invention is to provide an ultrasonic scalpel blood vessel bursting pressure testing device which can improve the detection accuracy of blood vessel bursting pressure and thus facilitate the improvement of the ultrasonic scalpel blade.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an ultrasonic knife blood vessel bursting pressure testing device, comprising a pressure generating module and a pressure collecting module, the pressure generating module comprising a pump body, one end of the pump body is connected to a liquid storage container, the other end of the pump body is connected to a connector for connecting a blood vessel to be tested through a first connecting tube, the pressure collecting module comprises a pressure detector arranged on the first connecting tube, characterized in that: it also comprises a control module electrically connected to the pump body, the pump body is connected to the liquid storage container through a second connecting tube, a first one-way valve is provided on the second connecting tube, the pump body is connected to the first connecting tube and the third connecting tube through a switching valve, and a drain is provided at one end of the third connecting tube away from the pump body.

[0007] The pump body delivers the liquid (such as saline) in the liquid storage container to the blood vessel to be tested, providing a pressure source for the blood vessel bursting pressure test; ensuring that the liquid can be delivered stably and continuously, providing reliable power support for the test. The first one-way valve is set to ensure the one-way flow of the liquid, avoid pressure fluctuations or test interruptions caused by liquid reflux, and improve the stability and reliability of the test.

[0008] The switching valve can flexibly switch the flow direction of the liquid. When the gas or liquid in the system needs to be drained, the switching valve can be used to direct the liquid to the third connecting pipe and discharge it from the drain port, and then new liquid can be drawn through the pump body to prevent air in the pump body from entering the connecting pipe, thereby improving the accuracy of subsequent detection; it also facilitates the cleaning of the pump body.

[0009] Preferably, a second one-way valve is provided on the first connecting pipe to further prevent liquid backflow, increase system reliability, and ensure one-way flow of liquid during the test.

[0010] Preferably, a shut-off valve is provided near the connector of the first connecting tube. The liquid passage can be cut off when necessary, which is convenient for pausing the operation during the test or preventing liquid leakage when changing the blood vessel to be tested; at the same time, it is convenient to adjust the liquid pressure in the connecting tube to maintain a certain liquid pressure. After completing a test and filling the liquid storage container with saline, the pump body stops conveying liquid, the liquid in the first connecting tube is emptied, and then the liquid in the pump body is emptied through the third connecting tube, and then the switching valve is switched and the shut-off valve is closed, so that the first connecting tube and the pump body are filled with liquid, and the pump body draws new saline and other liquids, thereby avoiding the presence of air in the first connecting tube.

[0011] Preferably, the control module further comprises a manipulator electrically connected to the pump body, the pressure acquisition module is electrically connected to the control module, and the manipulator is provided with an extraction control key for causing the pump body to extract liquid, a release control key for causing the pump body to empty the internal liquid, a bursting pressure test control key for causing the pump body to pump liquid at a constant speed, an adjustment control key for adjusting the pumping speed of the pump body, and an emergency stop control key for suspending the use of the pump body. The control module can flexibly adjust the working state of the pump body, thereby improving the automation degree and operational convenience of the test. The design of these control keys enables the operator to flexibly control the test process, thereby improving the accuracy and safety of the test.

[0012] Preferably, the pump body, pressure detector and manipulator are all powered by a medical power module, and the pressure detector is a digital remote pressure gauge. The pressure value is displayed digitally, and the data can be transmitted to the control module or other display device through the remote transmission function, which improves the accuracy and stability of the pressure reading, facilitates remote monitoring and data recording, and reduces human reading errors. The use of a medical power module can ensure the power supply stability and safety of the equipment, and the use of the same power supply can avoid test errors caused by the instability of multiple power supplies, which meets the safety standards of medical devices.

[0013] Preferably, the pump body is a plunger pump. The plunger pump has a high rated pressure, a compact structure, high efficiency, convenient flow regulation, and high pressure output accuracy and stability during use; it can provide a stable liquid delivery pressure, ensure a uniform pressure rise during the test, and improve the accuracy of the test results.

[0014] The present invention solves the problems of inaccurate pressure testing and pressure fluctuation caused by gas ingress in the prior art; it has the advantage of improving the accuracy and stability of the test, and provides a reliable testing tool for improving the performance of the ultrasonic knife head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the shell of the present invention.

[0017] Figure 3 The figure is a usage state diagram of the liquid crystal display screen of the manipulator of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0019] Depend on Figure 1 As shown, this embodiment discloses an ultrasonic knife blood vessel bursting pressure test device, including a pressure generating module, a pressure acquisition module and a control module. The pressure generating module includes a pump body 1, one end of the pump body 1 is connected to a liquid storage container 3 for storing physiological saline through a second connecting tube 2, and the other end of the pump body 1 is connected to a first connecting tube 5 and a third connecting tube 6 through a switching valve 4. The first connecting tube 5 is connected to a connector 51 for connecting a blood vessel to be tested, and a shut-off valve 52 is provided at the connector 51. The second connecting tube 2 is provided with a first one-way valve 21, and the first connecting tube 5 is provided with a second one-way valve 53. The end of the third connecting tube 6 away from the pump body 1 is provided with a drain port. The pressure acquisition module includes a pressure detector 54 arranged on the first connecting tube 5. The pressure detector 54 of this embodiment is a digital remote pressure gauge, and the pump body 1 is a plunger pump.

[0020] Depend on Figure 1 and Figure 3 As shown, the control module includes a manipulator 7 electrically connected to the pump body 1. The manipulator 7 of this embodiment includes a touch screen 71. The pressure acquisition module is electrically connected to the control module. The touch screen 71 is provided with an extraction control key for the pump body to extract liquid, a release control key for the pump body to empty the internal liquid, a burst pressure test control key for the pump body to pump liquid at a constant speed, an adjustment control key for adjusting the pumping speed of the pump body (including two relatively arranged keys on the left and right for increasing and decreasing respectively), and an emergency stop control key for suspending the use of the pump body. The touch screen 71 is also provided with a reset control key for resetting the pump body 1 to facilitate multiple operations in a short period of time. The pump body 1, the pressure detector 54 and the manipulator 7 of this embodiment are all powered by the medical power module 8.

[0021] Depend on Figure 2 As shown, the pump body, pressure detector and medical power supply module of this embodiment are all arranged in the shell 100, the touch screen 71 of the manipulator is arranged on the shell 100, and the back of the shell 100 is also provided with a liquid inlet hole for connecting the second connecting tube 2 and a liquid outlet hole for connecting the switching valve 4.

Claims

1. An ultrasonic scalpel blood vessel bursting pressure test device, comprising a pressure generating module and a pressure collecting module, wherein the pressure generating module comprises a pump body, one end of the pump body is connected to a liquid storage container, and the other end of the pump body is connected to a connector for connecting a blood vessel to be tested through a first connecting pipe, and the pressure collecting module comprises a pressure detector arranged on the first connecting pipe, characterized in that: It also includes a control module electrically connected to the pump body, the pump body is connected to the liquid storage container through a second connecting pipe, the second connecting pipe is provided with a first one-way valve, the pump body is connected to the first connecting pipe and the third connecting pipe through a switching valve, and the third connecting pipe is provided with a drain outlet at one end away from the pump body.

2. The ultrasonic scalpel blood vessel bursting pressure test device according to claim 1, characterized in that: The first connecting pipe is provided with a second one-way valve.

3. The ultrasonic scalpel blood vessel bursting pressure test device according to claim 1, characterized in that: A shut-off valve is provided near the connecting head of the first connecting pipe.

4. The ultrasonic scalpel blood vessel bursting pressure test device according to claim 1, characterized in that: The control module also includes a manipulator electrically connected to the pump body, and the pressure acquisition module is electrically connected to the control module. The manipulator is provided with an extraction control key for causing the pump body to extract liquid, a release control key for causing the pump body to empty the internal liquid, a bursting pressure test control key for causing the pump body to pump liquid at a constant speed, an adjustment control key for adjusting the pumping speed of the pump body, and an emergency stop control key for suspending the use of the pump body.

5. The ultrasonic scalpel blood vessel bursting pressure test device according to claim 4, characterized in that: The pump body, pressure detector and manipulator are all powered by a medical power supply module, and the pressure detector is a digital remote pressure gauge.

6. The ultrasonic scalpel blood vessel bursting pressure test device according to claim 1, characterized in that: The pump body is a plunger pump.

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