A kind of orthopedic knee arthroscopic joint spreader

Abstract

The invention discloses an orthopedic knee arthroscopic joint spreader, which relates to the technical field of medical instruments. It includes a minimally invasive external control unit and a built-in support unit; the minimally invasive external control unit includes a main shaft; the front end of the main shaft is fixedly connected with a drive gear; the built-in support unit includes a conical slotted shell; the slotted shell The rear end is fixedly connected with an annular support ring; the half-ring support device includes a transmission gear and two rotating gears; the sides of the rotating gear are fixedly connected with a semi-annular support piece; the rear end of the support ring rotates and installs the transmission gear; The rotation positioning device described above includes a guide shell fixedly installed at the inner axis of the slotted shell; the rear end of the turntable is equipped with a stop pawl that cooperates with the internal teeth. The beneficial effect of the present invention is that: the built-in support unit can realize expansion support, multiple can be used alone, the wound is small, the support expansion is large, and the minimally invasive external control unit does not need to stay, which is convenient for the minimally invasive surgery of the knee arthroscopic joint.

Description

technical field [0001] The invention relates to the technical field of medical instruments. Background technique [0002] Knee arthroscopy can examine and treat intra-articular diseases. It is suitable for joint injuries and non-infectious arthritis. It is performed with the aid of lighting devices, endoscopic cameras, and joint distraction devices. In the general operation process, several small surgical wounds are created in the patient's joints for insertion of related equipment for surgery, while the general joint expansion device uses structures such as "X" levers for expansion and support. This structure is not suitable for microscopic surgery. In the small wound operation of invasive surgery, it is impossible to ensure that the lever support point is located in the wound, and except for the position of the lever support point, other positions will form a large distance expansion during the opening process, which is easy to cause re-trauma to the small wound and form a...

AI Technical Summary

Problems solved by technology

In the general operation process, several small surgical wounds are created in the patient's joints for insertion of related equipment for surgery, while the general joint expansion device uses structures such as "X" levers for expansion and support. This structure is not suitable for microscopic surgery. In the small wound operation of invasive surgery, it is impossible to ensure that the lever support point is located in the wound, and except for the position of the lever support point, other positions will form a large distance expansion during the opening process, which is easy to cause re-trauma to the small wound and form a major operation Incision, and this kind of structure occupies a surgical wound position, can only form a support position, and at the same time, it is easy to block the surgical operation space, which is not suitable for trial or is not conducive to the minimally invasive surgery

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