Built-in leakage-proof device for mechanical ultrasonic probe

Abstract

The utility model discloses a built-in leakage-proof device of a mechanical ultrasonic probe. Comprising a soft rubber oil bag which is installed at the rear end of a mechanical probe and used for counteracting pressure generated by thermal expansion and cold contraction of oil liquid, the soft rubber oil bag is hollow and flat, the density of oil liquid molecules is increased during thermal expansion, the oil bag becomes round, and the size is naturally increased; during cold shrinkage, the density of oil molecules is reduced, the oil bag becomes flatter, and air is prevented from entering the oil bag due to too small internal pressure; pressure generated by oil expansion and contraction caused by high temperature and low temperature can be released through the shape change of the soft rubber oil bag, so that the pressure cannot only act on the sealing rubber ring or the sealing glue, and leakage and air inflow caused by overlarge internal and external pressure difference when the temperature of the mechanical probe changes in a large range are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of veterinary medical devices, specifically to a mechanical ultrasonic probe with a built-in leak-proof device. Background Technology

[0002] Medical ultrasound probes come in many types, and in terms of their working principle, they can be divided into electronic probes and mechanical probes. Electronic probes use multi-element crystals, which have a long lifespan and good performance, but are expensive; mechanical probes use one (or several) piezoelectric crystals, which are cheaper, have a shorter lifespan, and require regular maintenance. The main task of regular maintenance is to add probe-specific oil. This probe oil has good acoustic transmission, low density, and low resistance to ensure effective transmission of ultrasound waves.

[0003] Currently, mechanical probes employ two methods for oil sealing: direct sealing using high-strength sealant or rubber rings, and siphoning to balance internal and external pressure. However, both methods are prone to leakage and bubble formation under significant temperature changes, ultimately affecting test results, especially in extremely cold and hot regions. This is even more pronounced during storage and transportation. During sea freight, the temperature inside containers exposed to direct sunlight can reach 80°C, while in some northern regions, winter outdoor temperatures can plummet to -40°C. Under such extreme conditions, these conventional methods inevitably lead to leakage. Due to their lower cost, mechanical probes hold a significant market share in veterinary ultrasound probes. To address the issue of oil leakage and bubble formation caused by prolonged operation of mechanical probes, this device aims to solve the problem of oil leakage in mechanical probes. Utility Model Content

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a built-in anti-leakage device for a mechanical ultrasonic probe to solve the problem that existing mechanical ultrasonic probes generate bubbles due to oil leakage caused by temperature difference, which in turn affects the test results.

[0005] This invention is achieved by constructing a built-in leak-proof device for a mechanical ultrasonic probe, characterized by: a soft rubber bladder installed at the rear end of the mechanical probe to counteract the pressure generated by the thermal expansion and contraction of the oil. This soft rubber bladder is hollow and flat. During thermal expansion, the density between oil molecules increases, causing the bladder to become circular and its volume to increase. During cold contraction, the density between oil molecules decreases, making the bladder flatter and preventing air from entering due to insufficient internal pressure. The pressure generated by the expansion and contraction of the oil due to high and low temperatures is released through the shape change of this soft rubber bladder, preventing pressure from acting solely on the sealing ring or sealant. This effectively avoids leakage and air intake caused by excessive internal and external pressure differences when the mechanical probe experiences large temperature variations.

[0006] Furthermore, the lower part of the soft rubber oil bladder is connected to the oil inside the ultrasonic probe via a pagoda-shaped interface with a locking cap.

[0007] Furthermore, there is a sealing ring at the connection between the pagoda interface and the oil inside the ultrasonic probe.

[0008] Furthermore, the soft rubber oil bladder interface is tightly connected to the pagoda interface and locked with a locking cap to prevent the soft rubber oil bladder from slipping off.

[0009] Furthermore, this device completely isolates itself from the outside world through oil and releases pressure completely through deformation, ensuring no leakage or air ingress; it can improve testing results and extend the probe's service life.

[0010] This utility model has the following advantages: (1) This device mainly utilizes the pressure release method to solve the problem of excessive internal and external pressure leading to cracking and easy leakage and air intake caused by the direct sealing method. (2) This device solves the problem of oil leakage and air intake that may occur when using a siphon tube to release pressure through internal and external connection. (3) This device completely isolates the oil from the outside and completely releases pressure through deformation, so that there is no leakage and no air intake. It can improve the test effect and extend the service life of the probe. (4) This device can prevent leakage and air intake, reduce unnecessary oil replenishment and oil change, and reduce the cost of use and maintenance. Attached Figure Description

[0011] Figure 1 This is an overall view of the soft rubber oil bladder;

[0012] Figure 2 This is a front view of the cross-section of the soft rubber oil bladder;

[0013] Figure 3 This is a side view of the cross-section of a soft rubber oil bladder;

[0014] Figure 4 This is a diagram showing the installation location of the soft rubber oil bladder;

[0015] Figure 5 This is a schematic diagram of the soft rubber oil bladder structure connection. Detailed Implementation

[0016] The following will be combined with the appendix Figures 1-5 This utility model will be described in detail, and the technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0017] This utility model provides a built-in leak-proof device for a mechanical ultrasonic probe, such as... Figures 1-5 As shown, it can be implemented in the following manner;

[0018] Mechanical ultrasonic probes must be filled with a special ultrasonic probe oil. Due to the different thermal expansion and contraction characteristics of this oil compared to other components, the probe oil's coefficient of thermal expansion is significantly higher than other components (approximately 0.001 L / ℃). An 80℃ temperature change results in an 8% volume change. Significant temperature variations in the oil's volume lead to a large pressure difference between the internal and external systems. At high temperatures, the internal oil expands, increasing its volume and causing excessive internal pressure, leading to leakage. At low temperatures, the internal oil contracts, decreasing its volume and causing insufficient internal pressure, allowing external air to enter and create bubbles.

[0019] To address the air bubble problem caused by the aforementioned oil leakage, this invention involves installing a soft rubber bladder 1 at the rear end of the mechanical probe to counteract the pressure generated by the thermal expansion and contraction of the oil. This bladder is hollow and flat. During thermal expansion, the density between oil molecules increases, causing the bladder to become spherical and its volume to increase. During cold contraction, the density between oil molecules decreases, making the bladder flatter and preventing air from entering due to insufficient internal pressure. The pressure generated by the expansion and contraction of the oil due to high and low temperatures is released through the shape change of this soft rubber bladder, preventing pressure from acting solely on the sealing ring or sealant. This effectively avoids leakage and air intake caused by excessive internal and external pressure differences when the mechanical probe experiences large temperature variations.

[0020] The assembly method is as follows: The bottom of the soft rubber oil bladder 1 is connected to the oil inside the ultrasonic probe through the pagoda interface 2 with a locking cap, and a sealing rubber ring can be provided at the connection; the soft rubber oil bladder interface and the pagoda interface are tightly connected and locked with the locking cap to prevent the soft rubber oil bladder from slipping off.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) This device mainly uses the pressure release method to solve the problem of excessive internal and external pressure leading to cracking and easy leakage and air intake caused by the direct sealing method.

[0023] (2) This device solves the problems of oil leakage and air intake that may occur when using a siphon tube to release pressure through internal and external connections.

[0024] (3) This device completely isolates itself from the outside through oil and releases pressure completely through deformation, ensuring no leakage and no air ingress. This improves testing results and extends the probe's lifespan.

[0025] (4) This device can prevent leakage and air intake, reduce unnecessary oil replenishment and oil change, and reduce the cost of use and maintenance.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mechanical ultrasonic probe built-in leak protection device, characterized by; The device includes a soft rubber bladder (1) installed at the rear end of the mechanical probe to counteract the pressure generated by the thermal expansion and contraction of the oil. The soft rubber bladder (1) is hollow and flat. When it expands with heat, the density between oil molecules increases, and the bladder becomes round, naturally increasing its volume. When it contracts with cold, the density between oil molecules decreases, and the bladder becomes flatter, preventing air from entering due to insufficient internal pressure. The pressure generated by the expansion and contraction of the oil due to high and low temperatures is released through the shape change of this soft rubber bladder, so that the pressure does not only act on the sealing ring or sealing glue, effectively preventing leakage and air intake caused by excessive internal and external pressure difference when the mechanical probe changes over a wide range of temperatures.

2. The mechanical ultrasonic probe built-in leak-proof device according to claim 1, characterized in that; The soft rubber oil bladder (1) is connected to the oil inside the ultrasonic probe via a pagoda-shaped interface (2) with a locking cap.

3. The mechanical ultrasonic probe built-in leak-proof device according to claim 2, characterized in that There is a sealing ring at the connection.

4. The mechanical ultrasonic probe built-in leak protection device according to claim 1, characterized in that; The soft rubber oil bladder interface is tightly connected to the pagoda interface and locked with a locking cap to prevent the soft rubber oil bladder from slipping off.

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