An auxiliary device and system for ultrasound examination of the function of the valves of the veins of the lower extremities

Abstract

This invention discloses an auxiliary device and system for ultrasound examination of lower limb venous valve function, comprising: a pressure application component, a rebound detection component, and a control unit. Both the pressure detection element and the rebound force detection element are electrically connected to the control unit. The rebound detection component detects the rebound force of the pressured portion after pressure is applied by the pressure application component. The rebound detection component includes a positioning element connected to the rebound detection element. The rebound detection element is positioned flush with the extreme position of the pressure application component after movement. The control unit contains an operating system. The pressure application component can record the magnitude of the applied pressure. The rebound force detection component can test the rebound force of human tissue after pressure is applied by the pressure application component. After recording both forces, the applied pressure minus the rebound force gives the actual pressure applied to the vein to be tested by the device.

Description

Technical Field

[0001] This invention discloses an auxiliary device and system for ultrasound examination of lower limb venous valve function, relating to the technical field of auxiliary devices for ultrasound examination of lower limb venous valve function. Background Technology

[0002] Lower extremity venous valve function testing mainly includes two methods: venography and ultrasound examination. In clinical practice, ultrasound is more commonly used for lower extremity venous valve function testing. When examining for deep vein valve insufficiency in the lower extremities, patients are often required to hold their breath after a deep inhalation to improve detection accuracy. However, some patients may have other conditions (such as lung disease) that prevent them from meeting this requirement. Current technology often addresses this issue by manually squeezing the distal limb, i.e., manually squeezing the veins. This method is prone to insufficient pressure, creating the illusion of no reflux or low-velocity, low-flow reflux at the venous valve orifice, preventing the ultrasound instrument from detecting accurate reflux signals.

[0003] Based on the foregoing, obtaining an accurate reflux pattern requires applying precise external pressure to the patient. According to existing medical research, whether it is breath-holding testing or manual pressure applied by medical staff, the purpose is to maintain the pressure on the blood vessel being tested. When applying pressure, the pressure on the lower limb vein to be examined should be around 100 mmHg, or around 13.342 kPa. However, after the pressure applied from outside the lower limb reaches the blood vessel, the pressure on the blood vessel should be the total applied pressure minus the pressure value of the rebound force of human tissue.

[0004] In existing technologies, in order to apply accurate pressure to the patient's blood vessels and obtain accurate test results, whether it is through mechanical devices or medical personnel applying different pressures to the blood vessel locations in the patient's lower limbs, only external pressure is considered without taking into account tissue rebound force. This method results in inconsistent pressure and inconsistent measurements at the pressure points, which leads to large dispersion in the acquired images and data, making it impossible to quickly obtain accurate information.

[0005] Content of this invention

[0006] The purpose of this invention is to provide an auxiliary device and system for ultrasound examination of lower limb venous valve function, solving the problem of the lack of a device in the prior art that can apply accurate pressure to the lower limb veins.

[0007] To achieve the above-mentioned technical objectives and effects, the invention is implemented through the following technical solution:

[0008] An auxiliary device and system for ultrasound examination of lower extremity venous valve function includes: a pressure applying component, a rebound detection component, and a control unit. The pressure applying component is provided with a pressure detection element in the direction of pressure application, and the rebound detection component is provided with a rebound force detection element at the pressure application site. Both the pressure detection element and the rebound force detection element are electrically connected to the control unit. The control unit can control the degree of support of the rebound detection component and the pressure applying component. The rebound detection component detects the rebound force of the pressured part after the pressure applying component applies pressure.

[0009] Furthermore, the pressure-applying component includes a pressure-applying element and a power element. The pressure-applying element moves under the pushing action of the power element to apply pressure to the detection part.

[0010] Furthermore, the pressure-applying component is an airbag, the power element is an inflation element, and the pressure detection element is located at the highest position after the airbag is inflated.

[0011] Furthermore, the springback detection component includes a positioning member, which is connected to the springback detection element. The springback detection element is positioned flush with the extreme position of the pressure member after it has moved.

[0012] Furthermore, the positioning element is a telescopic rod disposed at the center of the pressure-applying element.

[0013] Furthermore, the control unit contains an operating system, which includes...

[0014] Furthermore, a pressure control module is provided for controlling the amount of pressure applied by the pressure-applying component;

[0015] Furthermore, a pressure reading module is provided for acquiring data from the pressure detection element;

[0016] Furthermore, a rebound force reading module is used to acquire data from the rebound force detection element;

[0017] Furthermore, a calculation module for analyzing the difference between pressure and rebound force is provided, and the calculation module can also control the range of pressure values ​​output by the pressure control module;

[0018] Furthermore, a display module for displaying various data;

[0019] Furthermore, the pressure control module applies a quantitative pressure of 130 mmHg, and the pressure reading module and the rebound force reading module transmit the read data to the calculation module. The calculation module compares the obtained difference with 100 mmHg ± 10. If the difference is not within the above range, the calculation module outputs a command to the pressure control module to change the pressure so that the difference is within the range of 100 mmHg ± 10.

[0020] Furthermore, the pressure reading module and the rebound force reading module read sequentially. The pressure-applying component applies pressure first and then removes the pressure. The pressure reading module first reads the pressure when the pressure-applying component applies pressure, and the rebound force reading module reads the magnitude of the rebound force within 0.5 seconds after the pressure-applying component removes the pressure.

[0021] Furthermore, after calculating the difference, the calculation module compares it with 100 mmHg ± 10. If the difference is not within the above range, the module subtracts the difference from 100 to obtain an increase. The increase is then summed with the quantitative pressure of 130 mmHg, and the summed value is the value of the output pressure change.

[0022] Furthermore, the operating system also includes a data statistics module, which can record the rebound force received by the calculation module each time.

[0023] Furthermore, the positioning element is also connected to a telescopic control element that controls its extension and retraction degree, and the telescopic control element is circuitically connected to the control unit.

[0024] Beneficial effects:

[0025] The pressure-applying component in this invention can record the magnitude of the applied pressure, and the rebound detection component can test the rebound force of human tissue after the pressure-applying component applies pressure. After recording the above two forces, the applied pressure minus the force generated by the rebound is the actual pressure applied by the device to the vein to be tested. In this way, precise pressure can be applied to the vein to be tested, thereby improving the problem that existing auxiliary detection devices can only roughly adjust the total pressure or that the pressure applied by the medical staff is inaccurate due to manual pressure application. In order to achieve the above functions, this invention also controls the pressure-applying component and the rebound detection component through the control component. An operating system is configured in the control component to automatically realize the function of accurately applying pressure to the vein to be tested on the patient through the corresponding process, thereby improving work efficiency.

[0026] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] Figure 1 This is a diagram of an auxiliary device and system for ultrasound examination of lower extremity venous valve function, as described in an embodiment of the present invention.

[0028] Figure 2 This is a cross-sectional view of the pressure application component and the springback detection component according to an embodiment of the present invention;

[0029] Figure 3 This is a diagram showing the simultaneous operation of the pressure application component and the rebound detection component according to an embodiment of the present invention.

[0030] Figure 4 This is a diagram showing the individual working state of the rebound detection component according to an embodiment of the present invention;

[0031] Figure 5 This is an operation flowchart of the operating system described in an embodiment of the present invention;

[0032] In the attached image:

[0033] 1-Pressure application component, 2-Rebound detection component, 3-Display element, 101-Pressure application component, 102-Pressure detection element, 201-Positioning component, 202-Rebound force detection element; Detailed Implementation

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Example 1

[0036] The applicant considered that in the examination of the venous valve function of the patient's lower extremities, it is necessary to apply a pressure of about 100 mmHg to the vein to be examined. After applying a quantitative pressure, the patient can be judged by observing whether the blood returns through medical imaging. Currently, the pressure is mainly applied by medical staff pressing with their hands. This method cannot quantify the pressure and it is difficult to determine whether the pressure is within the correct range. In order to achieve the purpose of quantifying the pressure value and applying precise pressure to the blood vessel to be tested, this embodiment discloses an auxiliary device and system for ultrasound examination of the venous valve function of the lower extremities, including: a pressure applying component (1), a rebound detection component (2), and a control unit. The pressure applying component (1) is provided with a pressure detection element (102) in the pressure applying direction. The rebound detection component (2) is provided with a rebound force detection element (202) at the pressure applying part. The pressure detection element (102) and the rebound force detection element (202) are both connected to the control unit circuit. The control unit can control the degree of support of the rebound detection component (2) and the pressure applying component (1).

[0037] The pressure-applying component (1) applies pressure to the vein to be tested, and the pressure detection element (102) detects the pressure generated by the pressure-applying component (1).

[0038] In order to achieve the function of applying accurate pressure to the vein to be tested, it is necessary to first obtain accurate test of the pressure inside the venous blood. However, the above test is difficult to achieve in the internal blood vessels. Therefore, the applicant designed the pressure detection element (102) and the rebound force detection element (202) to achieve the function of accurately testing the pressure inside the venous blood.

[0039] When external pressure is applied to the human body, the human tissue in the compressed part will actually generate a certain rebound force. The accurate value of the pressure applied to the vein to be tested can be obtained by subtracting this rebound force from the applied pressure. Therefore, the rebound detection component (2) detects the rebound force of the compressed part after the pressure application component (1) applies pressure. That is, the rebound force generated by the human tissue is detected immediately after the pressure application component (1) applies pressure. The difference between the two parts is the actual pressure value acting on the blood vessel to be tested.

[0040] Compared to existing technologies, the invention in this embodiment eliminates the need for manual pressure to assist in ultrasound examination of lower limb venous valve function and quantifies the data to apply precise pressure. Furthermore, unlike other devices that replace manual operation to assist clamping, such as (CN215272898U), which cannot detect the pressure on the vein under test, it is easy to understand that the rebound force generated by human tissue varies due to differences in tissue structure among different populations. Compared to existing technologies, the invention in this embodiment can measure the specific pressure on the vein under test under different conditions by detecting the rebound force.

[0041] Example 2

[0042] According to the rebound detection component (2) described in Embodiment 1, it is necessary to detect the rebound force of human tissue. In order to achieve the above function, it is necessary to detect the rebound force at the moment of rebound of human tissue in order to obtain the accurate value of the rebound force. It can be seen that the rebound detection component (2) needs to be equipped with a positioning component (201), and the pressure application component (1) needs to be equipped with a pressure application component (101) and a power element. The pressure application component (101) moves under the pushing action of the power element to apply pressure to the detection part. The positioning component (201) is connected to the rebound detection element. The rebound detection element is set at the same position as the limit position after the pressure application component (101) moves.

[0043] Therefore, the power element drives the pressure component (1) to achieve the supporting action. When the pressure component (101) reaches the limit position, the positioning component (201) remains flush with the limit position of the pressure component (101). When the power element releases the pressure, the positioning component (201) should remain in the limit position. The rebound force measured at this time is the most accurate rebound force. The positioning component (201) needs to be able to reach the limit position of the press and ensure that it does not conflict with the pressure component (101) when it performs the supporting action. The power element, pressure component (101), and positioning component (201) that meet the above functions can be of various types.

[0044] In one embodiment, the power element can be an inflatable structure, the pressure-applying element (101) can be an airbag, and the positioning element (201) is a slender telescopic rod disposed at the center of the airbag. When the inflatable structure pushes the airbag to inflate, it applies pressure to the position to be tested. After the pressure is applied, the telescopic rod also reaches the limit position reached by the airbag. When the inflatable structure stops inflating, the airbag begins to retract, and the telescopic rod remains in the original position to test the rebound force.

[0045] In one embodiment, the power element can be a linear motor, the pressure-applying component (101) can be a crescent-shaped structure wrapped with sponge, rubber or other soft structure, and the positioning component (201) can be a telescopic rod set inside the small circle of the crescent-shaped structure. The specific implementation steps during detection are the same as those in the above embodiment.

[0046] When using the above-mentioned device, the pressure applied to different patients and different locations can be adapted to different pressure conditions by changing the patient's lying posture and the way the lower limbs are positioned. Of course, an openable clamping structure can also be set to fix the patient's lower limbs. The above-mentioned device structures are all device structures that can be replaced with simple thinking. Therefore, other similar embodiments with different structures that achieve the target function based on the same principle will not be described in detail here.

[0047] Example 3

[0048] Based on the content of Examples 1-2, it is now clear how the device tests the rebound force. However, to achieve the target function, an automatic control system is also needed. Therefore, this application requests an operating system within the control unit. The control unit can be a simple microcontroller, a computer, or even a mobile phone. The operating system includes:

[0049] A pressure control module for controlling the amount of pressure applied by the pressure-applying component (1);

[0050] A pressure reading module for acquiring data from the pressure detection element (102);

[0051] A rebound force reading module for acquiring data from the rebound force detection element (202);

[0052] A calculation module for analyzing the difference between pressure and rebound force; the calculation module can also control the range of pressure values ​​output by the pressure control module.

[0053] A display module used to display various data;

[0054] The pressure control module applies a quantitative pressure of 130 mmHg. The pressure reading module and the rebound force reading module transmit the read data to the calculation module. The calculation module compares the obtained difference with 100 mmHg ± 10. If the difference is not within the above range, the calculation module outputs a command to the pressure control module to change the pressure so that the difference is within the range of 100 mmHg ± 10.

[0055] Based on the content described in Examples 1-2, it can be seen that the ultimate goal of the content mentioned in the above examples is to re-output a correct pressure value. However, the difficulty and key to outputting the correct pressure value are reflected in the device structure in Examples 1-2. That is, the difference obtained by the above calculation method is actually the real pressure applied to the vein to be tested mentioned in Example 1. It is an accurate data measured after removing the elasticity of human tissue.

[0056] To specifically implement the function of changing the value, the calculation module contains a specific calculation method. After calculating the difference, the calculation module compares it with 100 mmHg ± 10. If the difference is not within the above range, the difference is subtracted from 100 to obtain the increase. The increase is then summed with the quantitative pressure of 130 mmHg. The summed value is the value of the output pressure change.

[0057] The increase can be a negative number.

[0058] Finally, to ensure the accuracy of the read data, the pressure reading module and the rebound force reading module read the data sequentially. The pressure applying component (1) applies pressure first and then removes the pressure. The pressure reading module first reads the pressure when the pressure applying component (1) applies pressure, and the rebound force reading module reads the magnitude of the rebound force within 0.5 seconds after the pressure applying component (1) removes the pressure.

[0059] In addition, the pressure-applying component (1) can replace manual operation to apply pressure, eliminating the need for medical staff to repeatedly switch hands to perform the pressing action, thus freeing up the hands of medical staff and improving work efficiency.

[0060] The above are merely some embodiments of this application and are not intended to limit the application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments shall still fall within the scope of protection of the technical solution of this application.

Claims

1. An ultrasound examination of the function of the valves of the veins of the lower limbs, characterized in that: It includes a pressure-applying component, a rebound detection component, and a control unit. The pressure-applying component is provided with a pressure detection element in the direction of pressure application, and the rebound detection component is provided with a rebound force detection element at the part that is in contact with the pressure application. Both the pressure detection element and the rebound force detection element are circuit-connected to the control unit. The control unit can control the degree of support of the rebound detection component and the pressure-applying component. The rebound detection component detects the rebound force of the pressed part after the pressure is applied by the pressure application component; The springback detection component includes a positioning element, which is connected to the springback detection element. The springback detection element is positioned flush with the extreme position of the pressure application element after it has moved. The positioning element is a telescopic rod located at the center of the pressure-applying element.

2. The auxiliary device for ultrasound examination of the function of the valves of the veins of the lower extremities according to claim 1, characterized in that: The pressure-applying component includes a pressure-applying element and a power element. The pressure-applying element moves under the pushing action of the power element to apply pressure to the detection part.

3. The auxiliary device for ultrasound examination of the function of the valves of the veins of the lower extremities according to claim 2, characterized in that: The pressure-applying component is an airbag, the power element is an inflation element, and the pressure detection element is located at the highest position after the airbag is inflated.

4. The auxiliary device for ultrasonic examination of the function of the valves of the veins of the lower extremities according to claim 1, characterized in that: The positioning element is also connected to a telescopic control element that controls its extension and retraction degree, and the telescopic control element is connected to the control unit circuit.

5. An assist control system characterized by comprising: The system includes an operating system within the control unit of the auxiliary device for ultrasound examination of lower extremity venous valve function according to any one of claims 1-3, wherein the operating system includes... A pressure control module for controlling the pressure applied by the pressure-applying component; A pressure reading module used to acquire data from the pressure detection element; A rebound force reading module for acquiring data from the rebound force detection element; A calculation module for analyzing the difference between pressure and rebound force; the calculation module can also control the range of pressure values ​​output by the pressure control module. A display module used to display various data; The pressure control module applies a quantitative pressure of 130 mmHg. The pressure reading module and the rebound force reading module transmit the read data to the calculation module. The calculation module compares the obtained difference with 100 mmHg ± 10. If the difference is not within the above range, the calculation module outputs a command to the pressure control module to change the pressure so that the difference is within the range of 100 mmHg ± 10.

6. An auxiliary control system according to claim 5, characterised in that: The pressure reading module and the rebound force reading module read sequentially. The pressure-applying component applies pressure first and then removes the pressure. The pressure reading module first reads the pressure when the pressure-applying component applies pressure, and the rebound force reading module reads the magnitude of the rebound force within 0.5 seconds after the pressure-applying component removes the pressure.

7. An auxiliary control system according to claim 5, characterised in that: After calculating the difference, the calculation module compares it with 100 mmHg ± 10. If the difference is not within the above range, the module subtracts the difference from 100 to obtain an increase. The increase is then summed with the quantitative pressure of 130 mmHg, and the summed value is the value of the output pressure change.

8. An auxiliary control system according to claim 5, characterised in that: The operating system also includes a data statistics module, which can record the rebound force received by the calculation module each time.

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