A breast prosthesis volumetric device

Abstract

The utility model belongs to the technical field of medical instrument evaluation, specifically relates to a breast prosthesis volume measuring device, the breast prosthesis volume measuring device of the utility model places the measuring solution in the measurement storage tank, because the cross section area of measurement storage tank is constant setting, the outer diameter of measuring lower gland is less than the inner diameter of measurement storage tank, and the density of measuring lower gland is greater than the density of measuring solution, therefore, place the breast prosthesis below measuring lower gland, utilize measuring lower gland and press the breast prosthesis below the liquid level. Based on the density of measuring solution, the pressure difference produced by the liquid level change is measured through pressure sensor, and then the variable of liquid level can be obtained, and the volume of breast prosthesis can be obtained based on the cross section area of measurement storage tank, according to the above principle, the pressure variable measured by pressure sensor is converted into the volume variable of measuring solution by volume measuring module, and the rapid measurement of breast prosthesis can be completed.

Description

Technical Field

[0001] This utility model belongs to the technical field of medical device evaluation, specifically relating to a breast implant volume measuring device. Background Technology

[0002] Breast implants are artificial implants used in surgical procedures to alter the appearance and shape of the breast, commonly seen in breast augmentation (breast enlargement surgery) or breast reconstruction (such as repair after breast cancer treatment). According to data released by the World Health Organization (WHO) and the International Agency for Research on Cancer (IARC), breast cancer is the most common cancer worldwide. Furthermore, with the development of technology and the internet economy, more and more women are choosing surgical breast augmentation. Therefore, the market demand for breast implants is showing a steady upward trend.

[0003] The design of breast implant dimensions must comprehensively consider human anatomy, aesthetic requirements, and surgical safety. The size of the breast implant is one of the core factors determining the success of the surgery, directly affecting postoperative results, safety, and the patient's long-term health. Therefore, the size of breast implants should be strictly measured during product registration testing.

[0004] The dimensions of breast implants typically include: base dimensions, anterior projection height, and volume. Among these, the base dimensions and anterior projection height are relatively easy to measure accurately using vernier calipers and height calipers. However, accurately measuring the volume of breast implants using general-purpose measuring tools is difficult. Currently, measuring the volume of breast implants faces three main technical challenges: ① Breast implants are irregularly shaped, making it impossible to calculate using common volume formulas; ② Developers can usually provide the accurate density of the breast implant filling material, but breast implants consist of a filling material and a shell (outer membrane), and the density of the shell differs from that of the filling material. Furthermore, the complex structure of the shell makes it difficult to accurately determine its density. Therefore, even if the mass of the breast implant can be accurately measured, its volume cannot be obtained using density formulas; ③ Three-dimensional scanning technology is a high-precision measurement technique that captures three-dimensional spatial data of the surface or internal structure of an object using non-contact or contact sensors, and calculates the dimensional information of the scanned object using the obtained three-dimensional spatial data. However, such scanning equipment is expensive, and it is sensitive to minute surface irregularities of the sample, potentially leading to data distortion with reflective materials.

[0005] The displacement method is a common method for measuring the volume of irregular objects, but its application in measuring the volume of breast implants still faces two main challenges: ① To ensure material safety and implant biocompatibility, the overall density of breast implants is typically between (1.0~1.2) g / cm³. 3Therefore, breast implants in water are usually suspended. Furthermore, some breast implants have a hydrophobic surface design, further increasing the difficulty of allowing them to freely submerge in water; ② For smaller (less than 100 mL) or larger (greater than 650 mL) breast implants, this will undoubtedly introduce significant errors in measurement. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a breast implant volume measuring device, which is designed as a simple, economical and efficient testing device based on the water displacement method.

[0007] The technical problem to be solved by this utility model is achieved by the following technical solution: a breast implant volume measuring device, comprising a base, a measuring tank, a measuring lower pressure cap, a pressure sensor and a volume measuring module; The measuring tank is mounted on the base and is used to hold the measuring solution; The measuring tank has its opening facing upwards, and the cross-sectional area of ​​the measuring tank is set to be constant. The measuring pressure cap is installed inside the measuring tank. The outer diameter of the measuring pressure cap is smaller than the inner diameter of the measuring tank, and the density of the measuring pressure cap is greater than the density of the measuring solution. The pressure sensor is located at the bottom of the measuring tank and is electrically connected to the volume measuring module; The volume measurement module is used to convert the pressure variable measured by the pressure sensor into the volume variable of the solution.

[0008] Preferably, a conical groove is provided below the measuring pressure cap of this invention. Because the shape of the breast implant is irregular, to prevent the breast implant from swaying under the measuring pressure cap and causing fluid level fluctuations, a conical groove is provided below the measuring pressure cap to restrict the movement of the breast implant.

[0009] In a preferred embodiment of this invention, the measuring pressure cap has a liquid passage in the middle, which ensures that the liquid below the measuring pressure cap returns quickly during the process of pressing down the breast implant, and avoids the presence of residual gas below the measuring pressure cap affecting the measurement results.

[0010] Preferably, the inner cavity of the measuring tank is cylindrical.

[0011] Preferably, this utility model also includes leveling feet and an attitude indicator, wherein the leveling feet are located below the four corners of the base and are threadedly connected to the base; The attitude sensor is mounted on the base and is used to measure the angle between the base and the horizontal plane. By using the attitude sensor to measure the angle between the base and the horizontal plane, and adjusting the leveling feet to adjust the angle between the base and the horizontal plane, the liquid surface of the measured solution is kept parallel to the horizontal plane, thus avoiding the base tilting from affecting the measurement results.

[0012] In a preferred embodiment of this invention, the leveling feet are made of rubber, which has a cushioning effect and reduces the impact of external vibrations on the measurement results.

[0013] Preferably, this utility model also includes a display screen, which is used to display the liquid level of the measured solution, the liquid level increment of the measured solution, the real-time volume of the measured solution, and the single increment volume.

[0014] Preferably, in this invention, the display screen is also used to display the average incremental volume of the measured solution.

[0015] In a preferred embodiment of this invention, a buffer support column is provided between the measuring tank and the base. This buffer support column reduces the impact of external vibrations on the measurement results.

[0016] Preferably, the inner wall of the measuring tank is provided with a limiting ring, the inner diameter of which is smaller than the outer diameter of the measuring lower pressure cover, to limit the descent of the measuring lower pressure cover and prevent it from falling to the bottom of the measuring tank.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: The breast implant volume measuring device of this invention places a measuring solution in a measuring tank. Since the cross-sectional area of ​​the measuring tank is set to a constant value, the outer diameter of the measuring cap is smaller than the inner diameter of the measuring tank, and the density of the measuring cap is greater than the density of the measuring solution. Therefore, the breast implant is placed in the measuring solution, and then the measuring cap is used to press the breast implant down below the liquid surface. Based on the density of the measuring solution, the pressure difference generated by the change in liquid level is measured by a pressure sensor, thereby obtaining the change in liquid level. The volume of the breast implant can then be obtained based on the cross-sectional area of ​​the measuring tank. According to the above principle, the measuring device uses a volume measuring module to convert the pressure variable measured by the pressure sensor into the volume variable of the measuring solution, thus completing the rapid measurement of the breast implant. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the breast implant volume measuring device described in this utility model; Figure 2 This is a perspective view of the breast implant volume measuring device described in this utility model; Figure 3 This is a schematic diagram of the display screen described in this utility model; In the diagram, 100 represents the base, 1 represents the measuring tank, 2 represents the measuring lower pressure cap, and 3 represents the pressure sensor. 21. Conical groove, 22. Liquid through hole, 4. Leveling feet, 5. Display screen, 6. Buffer support column. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, a breast implant volume measuring device includes a base 100, a measuring tank 1, a measuring lower pressure cap 2, a pressure sensor 3, and a volume measuring module.

[0021] The measuring tank 1 is mounted on the base 100 and is used to hold the measuring solution. A buffer support column 6 is provided between the measuring tank 1 and the base 100.

[0022] The measuring tank 1 has its opening facing upwards, and its cross-sectional area is kept constant. The inner cavity of the measuring tank 1 is cylindrical.

[0023] The measuring pressure cap 2 is installed inside the measuring tank 1. The outer diameter of the measuring pressure cap 2 is smaller than the inner diameter of the measuring tank 1, and the density of the measuring pressure cap 2 is greater than the density of the measuring solution.

[0024] The pressure sensor 3 is located at the bottom of the measuring tank 1 and is electrically connected to the volume measurement module. The pressure sensor 3 is a piezoresistive sensor. After measuring the static pressure, the liquid level is calculated using the formula h=P / (ρg). This measuring device can also include a density sensor installed inside the measuring tank 1 for measuring and calibrating the liquid density.

[0025] The volume measurement module is used to convert the pressure variable measured by the pressure sensor 3 into the volume variable of the solution.

[0026] A conical groove 21 is provided below the measuring pressure cover 2.

[0027] The measuring pressure cover 2 has a liquid passage hole 22 in the middle.

[0028] The breast implant volume measuring device also includes leveling feet 4 and an attitude indicator (not shown in the figure). The leveling feet 4 are located below the four corners of the base 100 and are threadedly connected to the base 100.

[0029] The attitude sensor is mounted on the base 100 and is used to measure the angle between the base 100 and the horizontal plane.

[0030] The leveling feet 4 and each buffer support column 6 are made of rubber.

[0031] The breast implant volume measuring device also includes a display screen 5, which is used to display the liquid level of the measuring solution, the liquid level increment of the measuring solution, the real-time volume of the measuring solution, and the single increment volume.

[0032] The display screen 5 is also used to display the average incremental volume of the measured solution. The layout and related content of the display screen 5 are as follows: Figure 3 As shown.

[0033] A limiting ring is fixedly installed on the inner wall of the measuring tank 1. The limiting ring is located in the middle of the measuring tank 1 and is coaxially arranged with the measuring tank 1. The inner diameter of the limiting ring is smaller than the outer diameter of the measuring lower pressure cover 2 (not shown in the figure).

[0034] The principle of this technical solution is based on the fact that the hydrostatic pressure of a liquid is proportional to the liquid level (P=ρ·g·h). In this embodiment, the measuring solution is water, which has a density similar to that of a breast implant. The density difference between the measuring solution and the breast implant is ignored. Given that the density of the measuring solution is known, the liquid level can be calculated by measuring the pressure at the bottom of the measuring tank 1.

[0035] When a breast implant is immersed in a liquid, the increase in volume causes the liquid level to rise. The height of the rise can be obtained by measuring the increase in liquid pressure. Given the bottom area of ​​a regular container, the volume of the breast implant immersed in the liquid can be calculated.

[0036] The measuring device in this embodiment is also equipped with a temperature compensation module to eliminate the influence of liquid density changes with temperature. The temperature compensation module is existing technology, and its principle will not be described in detail here.

[0037] Measurement process: Before starting the test, prefill the measurement tank 1 with the measurement solution and correctly input the density of the measurement solution (the density is input on the water level calibration page). Place the measurement cap 2 into the measurement solution to obtain an initial liquid level height.

[0038] The method involves pressing the breast implant (under pressure cap 2) below the level of the measuring solution, waiting for the data to stabilize, and then automatically recording and displaying the real-time liquid level and the liquid level increment after the breast implant is added. The volume change is obtained based on the cross-sectional area of ​​the measuring tank 1, and thus the volume of the breast implant is determined. Since the measurement is of volume change, the result is not affected by the density of the pressure cap 2.

[0039] To improve measurement accuracy, multiple measurements can be performed, and the average volume can be calculated based on the results of multiple tests.

Claims

1. A device for measuring the volume of a breast implant, characterized in that: It includes a base (100), a measuring tank (1), a measuring lower pressure cover (2), a pressure sensor (3), and a volume measuring module; The measuring tank (1) is mounted on the base (100) and is used to hold the measuring solution; The measuring tank (1) has its opening facing upwards, and the cross-sectional area of ​​the measuring tank (1) is set to be constant. The measuring pressure cap (2) is installed inside the measuring tank (1). The outer diameter of the measuring pressure cap (2) is smaller than the inner diameter of the measuring tank (1). The density of the measuring pressure cap (2) is greater than the density of the measuring solution. The pressure sensor (3) is located at the bottom of the measuring tank (1) and is electrically connected to the volume measuring module; The volume measurement module is used to convert the pressure variable measured by the pressure sensor (3) into the volume variable of the solution.

2. The breast implant volume measuring device according to claim 1, characterized in that: A conical groove (21) is provided below the measuring pressure cover (2).

3. The breast implant volume measuring device according to claim 1 or 2, characterized in that: The measuring pressure cap (2) has a liquid passage hole (22) in the middle.

4. The breast implant volume measuring device according to claim 1, characterized in that: The inner cavity of the measuring tank (1) is cylindrical.

5. The breast implant volume measuring device according to claim 1, characterized in that: It also includes leveling feet (4) and attitude indicator. The leveling feet (4) are located below the four corners of the base (100) and are threadedly connected to the base (100). The attitude sensor is mounted on the base (100) and is used to measure the angle between the base (100) and the horizontal plane.

6. The breast implant volume measuring device according to claim 5, characterized in that: The leveling feet (4) are made of rubber.

7. The breast implant volume measuring device according to claim 1, characterized in that: It also includes a display screen (5) for displaying the liquid level of the measured solution, the liquid level increment of the measured solution, the real-time volume of the measured solution, and the single increment volume.

8. The breast implant volume measuring device according to claim 7, characterized in that: The display screen (5) is also used to display the average incremental volume of the measured solution.

9. The breast implant volume measuring device according to claim 1, characterized in that: A buffer support column (6) is provided between the measuring tank (1) and the base (100).

10. The breast implant volume measuring device according to claim 1, characterized in that: The inner wall of the measuring tank (1) is provided with a limiting ring, the inner diameter of which is smaller than the outer diameter of the measuring lower pressure cover (2).

Images