Customized design of the outer diameter of medical precision catheters: precisely matching surgical needs

Customization of surgical site and catheter outer diameter
The outer diameter of medical precision catheters depends first on the characteristics of the surgical site. The anatomical structures of different sites are complex and varied, and the requirements for catheter size are also different. For example, neurosurgery often needs to be performed in the highly precise and fragile area of ​​the brain, which requires the outer diameter of the catheter to be as small as possible to reduce damage to the surrounding brain tissue. Therefore, the outer diameter of the catheter commonly used in neurosurgery is often less than 1mm, and can even reach an ultra-micro size of 0.30mm. Such a design not only improves the accuracy of the operation, but also greatly reduces the risk of postoperative complications.

In contrast, surgeries such as angioplasty that require larger channels have different requirements for the outer diameter of the catheter. Such surgeries usually require the catheter to accommodate treatment devices, such as balloon catheters, stents, etc., as well as to deliver necessary drugs. Therefore, the outer diameter of the catheter used for angioplasty is usually increased to several millimeters to ensure that the treatment device can smoothly enter the blood vessel and play a role. This change in size is precisely to meet the specific requirements of catheter performance in different surgical sites.

Matching of channel size and catheter outer diameter
In addition to the surgical site, the size of the required channel is also one of the key factors in determining the outer diameter of the catheter. During surgery, the catheter needs to pass through various tissues, blood vessels or organs, and the size of each channel is limited. Therefore, in order to ensure that the catheter can pass smoothly and reach the target area, the doctor needs to choose the appropriate outer diameter of the catheter according to the size of the channel. If the outer diameter of the catheter is too large, it may cause blockage of the channel or damage to the surrounding tissue; if the outer diameter of the catheter is too small, it may not be able to carry the required treatment equipment or drugs.

Compatibility with other medical devices
In addition, the outer diameter design of medical precision catheters also needs to consider compatibility with other medical devices. In modern surgery, catheters often need to be used in conjunction with other medical devices (such as endoscopes, ultrasound probes, etc.) to achieve more comprehensive diagnosis and treatment. Therefore, the outer diameter of the catheter must match the interface size of other devices to ensure that they can be tightly connected and work together. This compatibility design not only improves the efficiency of the operation, but also ensures safety and reliability during the operation.