In the field of Assisted Reproductive Technology (ART), Ovum Pick‑Up (OPU) serves as the critical first step for the success of treatments such as In Vitro Fertilization (IVF). As the core instrument for this key procedure, the performance of OPU needles directly determines oocyte retrieval rate, oocyte quality, as well as patient comfort and safety. Among various product types, single‑lumen OPU needles are the most widely used basic model in clinical practice due to their simple structure and reliable operation. Leveraging profound expertise in minimally invasive interventional devices, Cook Medical, a world‑leading medical device manufacturer, offers a series of rigorously validated single‑lumen OPU needles, earning trust from numerous reproductive centers globally.

Cook Medical: An Industry Giant Specializing in Minimally Invasive Medicine

Cook Medical is a family‑owned medical device company with over 60 years of history, renowned worldwide for its innovations in minimally invasive medical technologies. Within reproductive health, Cook Medical is committed to delivering complete solutions spanning from oocyte retrieval to embryo transfer. Its OPU needle product line, as a core consumable for oocyte retrieval, reflects the company's deep understanding of clinical needs and relentless pursuit of manufacturing excellence. Cook Medical's products comply with strict international quality standards such as ISO 13485 and have obtained regulatory approvals from multiple jurisdictions including the U.S. FDA, ensuring safety and efficacy for global clinical application.

Single‑Lumen OPU Needles: A Modern Interpretation of Classic Design

As the name suggests, a single‑lumen OPU needle features only one independent inner channel for aspirating follicular fluid containing oocytes under negative pressure. Though seemingly simple, this design demands extremely high precision and reliability. Cook Medical's single‑lumen OPU needles (e.g., the K‑DOPU series) are specifically engineered for transvaginal ultrasound‑guided follicular puncture and flushing.

Its core design features are as follows:

Precise Specifications: Multiple sizes are available to suit diverse clinical scenarios. For instance, its catalog includes 17G models with an outer diameter of approximately 1.47 mm, shaft lengths of 28 cm and 35 cm, and matched aspiration tubes of 60 cm or 90 cm, accommodating patients of different body types and operating table layouts.

Optimized Tip Geometry: The needle tip undergoes specialized grinding to form a sharp yet smooth bevel, designed to penetrate the vaginal wall and ovarian tissue with minimal puncture force, reducing tissue trauma and postoperative pain.

Superior Ultrasound Visibility: The needle shaft is typically equipped with echo markers, especially at the tip, enabling clinicians to track the needle position clearly and in real‑time on ultrasound screens for precise puncture and avoidance of blood vessels and other vital structures.

Reliable Connection System: Standard Luer Lock fittings ensure secure connection to aspiration pumps or syringes, preventing disconnection or air leakage during operation and maintaining stable negative‑pressure aspiration.

Clinical Advantages and Market Position

In routine IVF cycles, Cook Medical's single‑lumen OPU needles meet the oocyte retrieval requirements of most patients. Stable performance enables continuous and smooth aspiration of follicular fluid, minimizing fluid shear stress on oocytes during extraction - a critical factor for preserving egg viability. According to market research reports, the global OPU needle market was valued at approximately USD 42.5 million in 2024 and is projected to expand steadily with a consistent compound annual growth rate. Within this specialized and concentrated market, Cook Medical, alongside Kitazato IVF and Vitrolife, forms the top tier and holds a substantial market share.

Cook Medical's strengths lie not only in its products but also in its global supply chain and professional clinical support system, which provide timely product supply and technical training for reproductive centers worldwide, further consolidating its market standing.

Future Outlook: Continuous Innovation and Personalization

As assisted reproductive technologies evolve toward higher efficiency, minimal invasiveness and greater personalization, higher performance requirements are imposed on OPU needles. Future advancements in single‑lumen OPU needles are likely to focus on the following areas: further optimized tip coatings to reduce tissue friction, integration of advanced echo‑enhancement technologies for near‑transparent visualization, and development of finer gauges such as 18G and 19G to minimize trauma while maintaining aspiration efficiency. As an industry leader, Cook Medical is expected to leverage its robust R&D capabilities to drive iterations of this classic single‑lumen OPU needle, delivering consistent and reliable technical support for reproductive medicine specialists and patients across the globe.

Our company:Shenzhen Manners Technology Co., Ltd. is an ISO/TS certified company located in Shenzhen, China, specializing in human medical products. The products mainly include four categories: needle manufacturing, laser cut tubing, five-axis machining blade, and medical-grade visible trocar. The company also provides design assistance, research and development, rapid prototyping, and project management services.

Our expertise includes processing Titanium, Nitinol, and Stainless Steel components for implantable medical devices and surgical instruments. The company's expertise includes processing titanium, nitinol, and stainless steel components for implantable medical devices and surgical instruments, the Accu-Blade technology for grinding surgical needles, Accu-Laser Swiss processing, and production-validated prototypes.