What Is An OPU Needle? Core Definition, Structure And Leading Manufacturers

What Is an OPU Needle? Core Definition, Structure and Leading Manufacturers

OPU stands for Ovum Pick-Up, a key procedure in assisted reproductive technology (ART), including IVF (in vitro fertilization) and IVM (in vitro maturation). An OPU needle, also called an oocyte retrieval needle, is a high-precision, minimally invasive medical device designed to puncture the vaginal wall and ovarian follicles under ultrasound guidance, aspirating oocytes and follicular fluid safely and efficiently.

Modern OPU needles are produced by top global medical device manufacturers, including Kitazato IVF, Cook Medical, TechBruein, Manners Medical, and Vitrolife. These manufacturers strictly follow ISO 13485 and FDA/GMP standards, ensuring high biocompatibility, stable performance, and low complication rates.

In terms of materials, medical‑grade stainless steel is the most widely used, offering excellent durability, corrosion resistance, and biocompatibility; it is suitable for both reusable and disposable OPU needles. Titanium is another premium option-stronger, lighter, and highly corrosion‑resistant, ideal for long‑term or special clinical scenarios. Some single‑use disposable OPU needles are made of medical‑grade polymer, reducing cross‑infection risk.

Structurally, OPU needles are long and slender, typically 12–20 cm in length (some specialized models reach 35 cm), with a gauge ranging from 16G to 19G. Lower gauge numbers mean larger diameters: 16G/17G provides faster aspiration for large follicles, while 18G/19G minimizes tissue trauma and bleeding. Leading manufacturers like Manners Medical offer single‑lumen and double‑lumen designs; double‑lumen needles allow simultaneous oocyte aspiration and follicle flushing, improving retrieval efficiency.

As the foundation of IVF treatment, the quality of OPU needles directly affects oocyte survival rate, patient comfort, and clinical safety. With the growth of global infertility rates and ART demand, manufacturers continue to optimize needle tip geometry, surface coating, and echogenic markers for clearer ultrasound visualization. In the ART ecosystem, OPU needle manufacturers act as critical partners for fertility clinics, driving the standardization and refinement of oocyte retrieval procedures worldwide.