An orthopedic surgical trocar comprises a puncture needle and a puncture cannula. The cannula assembly includes a hollow tube, a cannula hub, and an end cap; the hub is fixed to the proximal end of the tube, while the detachable end cap seals the proximal opening of the tube. The puncture needle consists of a shaft, a needle tip, and a handle; the needle tip is fixed to the distal end of the shaft, and the handle is fixed to the proximal end of the shaft. The needle is inserted through the proximal opening of the cannula tube and exits through its distal opening, with the handle positioned externally to the proximal end of the cannula. This utility model features a rational structural design that enables effective perforation during orthopedic surgeries, facilitates the manipulation of surgical instruments, and enhances surgical efficiency.
During orthopedic surgery, when osteophytic lesions are identified within a joint, minimally invasive intervention is often required; this entails inserting surgical instruments into the body to perform the procedure under arthroscopic visualization. In contrast, most existing techniques involve open surgery requiring a surgical incision. The drawbacks of this approach are significant: it results in large incisions for the patient, complicates the surgical process, and often fails to achieve optimal clinical outcomes.