Ultrasound Device Probe Interface Seals

The probe interface seal of ultrasonic equipment is an important part of ultrasonic equipment, and its main function is to prevent the leakage of liquid (such as coupling) and prevent dust and impurities from entering the probe interface, to ensure the normal operation of ultrasound equipment and the accuracy of detection results. Here are some common ultrasound device probe interface seals:

O-rings

Features

This is a kind of sealing ring with a circular cross-section, which has the advantages of simple structure, convenient installation, and good sealing. O-rings are usually made of rubber (such as nitrile, fluoroelastomer, etc.) or elastomeric materials such as silicone, which can maintain good sealing performance within a certain range of pressures and temperatures. Its elasticity allows it to fit snugly on the surface of the probe interface, creating an effective seal.

Application Scenarios

It is widely used in the probe interface of various ultrasound equipment, such as ordinary ultrasound diagnostic instruments, the connection between the ultrasound probe and the host, etc. For example, the use of an O-ring seal at the junction of the handle of the ultrasonic transducer to the probe body can prevent the complaint from leaking from the connection.

Annular rubber seals

Features

Similar to O-rings, they are also made of an elastomeric material such as rubber, but in the shape of an annular shape. The size and shape of the annular rubber seal can be customized to the specific probe interface to ensure a tight fit to the interface. It has good sealing performance, can withstand certain pressure and tensile force, and has good wear resistance and corrosion resistance.

Application Scenarios

It is often used in some ultrasonic equipment probe interfaces with high sealing requirements, such as the connection between the ultrasonic probe and external equipment, the contact between the front end of the ultrasonic probe and the measured object, etc. For example, in some special ultrasonic testing equipment, the annular rubber seal is used to seal the gap between the probe and the object to be measured, preventing coupling leakage, and also reducing the influence of external impurities on the test results.

Silicone gasket

Features

Silicone gaskets have good flexibility, high-temperature resistance, and corrosion resistance, and can maintain stable performance over a wide range of temperatures. It has a smooth surface and a large contact area with the probe interface, which can provide a good sealing effect. In addition, the silicone gasket also has a certain shock absorption and cushioning effect, which can protect the probe interface from the impact of external forces.

Application Scenarios

It is suitable for some ultrasound equipment probe interfaces that require frequent disassembly and installation, such as ultrasound equipment with replaceable probes. When changing the probe, the silicone gasket ensures a tight connection and is easy to handle.

Mechanical seals

Features

A mechanical seal is a more complex sealing device, usually composed of springs, sealing rings, moving rings, and static rings. Its sealing principle is to tightly fit the moving and static rings together through the elastic force of the spring to form a mechanical seal, thus preventing liquid leakage. Mechanical seals have the advantages of good sealing performance and long service life, but the structure is complex and the installation and maintenance requirements are high.

Application Scenarios

It is mainly used in high-end ultrasound equipment or occasions with extremely high sealing requirements, such as ultrasound surgical equipment and interventional treatment equipment. In these devices, mechanical seals ensure an absolute seal of the probe interface, ensuring the safety and accuracy of the procedure or treatment.

Dust seals

Features

The main function of the dust seal is to prevent dust, impurities, etc. from entering the probe interface, and its structure is usually relatively simple, generally made of materials such as rubber or plastic. The sealing performance of the dust seal is relatively weak, but it can effectively block the ingress of dust and impurities and protect the cleanliness of the probe interface.

Application Scenarios

It is commonly used to protect the probes of ultrasound equipment when not in use, such as on the storage box or protective case of the ultrasound probe. During probe storage or transportation, the dust seal can prevent dust and impurities from entering the probe interface, affecting the next user's accuracy.

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