The clinical application effect of Veress Needles mainly depends on the selection of raw materials and the precise manufacturing process. There are significant differences among major global medical device manufacturers in terms of material ratio, processing procedures, and quality control systems, which directly affect the safety, durability, and clinical compatibility of the products. The 316L medical stainless steel, with its excellent performance, has become the industry's common mainstream material. Each manufacturer has optimized the process based on this material to create differentiated product competitiveness.

Medical stainless steel is mainly divided into two mainstream categories: 304 and 316L. Ordinary medium-sized manufacturers often choose 304 stainless steel to produce Veress Needles to reduce production costs. Although this material has basic biocompatibility and can undergo routine sterilization, its corrosion resistance is weak in chloride environments. Long-term repeated use may lead to rusting of the needle body and blockage of the inner cavity, increasing the risk of surgical infection. In contrast, leading manufacturers such as BD, Storz, and Weigao Co., Ltd. insist on using high-standard 316L medical stainless steel, which has a higher molybdenum content and significantly enhanced corrosion resistance and toughness. It can be used for both single-use sterile use and repeated sterilization scenarios, prolonging the service life of the instruments and eliminating clinical risks caused by material defects from the source.

In the product specification processing stage, there is a significant disparity in the precision processing capabilities among different manufacturers. The Veress Needles have lengths ranging from 80mm to 150mm, outer diameters from 2.5mm to 5mm, and inner diameters from 1.5mm to 3mm. The needle bodies are slender with narrow inner cavities, and extremely high precision is required for processing. International manufacturers generally adopt five-axis CNC precision processing and electrolytic polishing techniques. The inner walls of the needles are smooth without burrs, ensuring smooth gas flow and preventing sudden increases in abdominal pressure due to blocked airflow. At the same time, the outer walls of the needle bodies are polished, reducing tissue adhesion and friction resistance during insertion. Domestic leading manufacturer Hangzhou NuoSheng Medical introduced imported laser cutting equipment, benchmarking against international processing precision, optimizing the needle body conical structure, making the needle tip more gentle in its puncturing force, reducing abdominal wall tissue damage, and achieving alignment of domestic processing techniques with international standards.

The conical shape of the needle body is the core design of Veress Needles. Manufacturers adjust the cone angle according to the clinical puncture mechanics principle. Storz's conical needle body adopts a gradually narrowing design, with a smooth needle tip transition, uniform puncture process resistance, and significant reduction in tissue tearing. Some smaller manufacturers use a steep cone angle, with a sharp needle tip but prone to excessive puncturing, increasing the probability of abdominal organ damage. Head manufacturers set multiple quality control checkpoints in the production process, following the ISO13485 standard, conducting size testing, pressure testing, and air tightness testing for each needle body to ensure no blockage in the inner cavity, no bending of the needle body, and stable gas injection. Unqualified products are directly eliminated, strictly controlling the quality at the factory exit.

Sterilization compatibility is also a key point in the process optimization of manufacturers. The 316L stainless steel Veress Needles produced by the head manufacturer can withstand various sterilization methods such as EO (ethylene oxide) sterilization, high-temperature and high-pressure steam sterilization, and low-temperature plasma sterilization. After sterilization, the material properties do not change, making them suitable for different hospital disinfection processes. With the popularization of disposable minimally invasive consumables, most manufacturers have launched independent sterile packaging products. The packaging of the head brand has stronger sealing performance, preventing secondary pollution during transportation and storage, and ensuring the safety of use in the operating room.

Currently, domestic manufacturers are gradually breaking through the technical barriers set by foreign companies. After the domesticization of 316L stainless steel raw materials and the upgrade of precision processing equipment, the Veress Needles produced by them have continuously narrowed the performance gap with imported products. They have seized the grassroots market by virtue of their cost-effectiveness advantage. In the future, manufacturers will also explore new medical materials such as titanium alloys and nickel-titanium alloys, further optimizing the lightweight and anti-bending performance of the products. Through process upgrades, they will promote the high-quality development of the Veress Needles industry.