Orthopedic robot navigation device and positioning system

Abstract

The invention relates to an orthopedic robot navigation device and a positioning system. The orthopedic robot navigation device comprises a machine seat and a four-freedom degree biplane positioning mechanism, wherein the four-freedom degree biplane positioning mechanism is arranged on the machine seat and connected with the machine seat. The four-freedom degree biplane positioning mechanism comprises a first series connection mechanical arm, a second series connection mechanical arm and a straight lever-shaped guide device, wherein the first series connection mechanical arm comprises a firsthorizontal motion assembly, a first vertical motion assembly and a first cardan joint which are connected in series; the second series connection mechanical arm comprises a second horizontal motion assembly, a second vertical motion assembly and a second cardan joint which are connected in series; both the first horizontal motion assembly and the second first horizontal motion assembly are connected with the machine seat; and the straight lever-shaped guide device realizes the self positioning by being clamped with the first cardan joint and the second cardan joint respectively. The device isarranged at the side surface of the wounded limb, realizes the accurate positioning by the straight lever-shaped guide device and is suitable for a bone fixing operation of any wounded limb part, thereby more favorably meeting the requirement of the operation.

Description

technical field [0001] The invention relates to a medical device, in particular to a robot navigation device and a positioning system for orthopedic minimally invasive surgery. Background technique [0002] At present, with the continuous improvement and improvement of trauma orthopedic treatment technology, it has developed from the traditional open reduction and fixation to closed reduction and minimally invasive fixation. With the help of this new treatment method, fundamentally The secondary injury caused by incision of the injured part is avoided, the probability of infection of the patient is reduced, and the recovery time of the patient is also greatly shortened. At present, minimally invasive surgery in orthopedics has become the main direction for the development of trauma orthopedics. This new surgical method can be said to be the gospel of the majority of patients, but there are also some disadvantages. Due to the closed reduction and minimally invasive fixation...

AI Technical Summary

Problems solved by technology

The system described in this patent is to put the affected limb inside the positioning frame, fix the guiding device by the U-shaped frame, and penetrate the locking nail through the guiding hole on the guiding device, so as to fix the locking nail in the pin hole of the intramedullary nail The disadvantage of this system is that the guide device must be fixed by a U-shaped frame. The processing of the U-shaped frame involves complicated processes such as cutting and calibration, and the cost is high. Moreover, once a slight deformation occurs due to aging reasons, the guide device will be damaged. The positioning is inaccurate, which brings about a large error; in addition, placing the affected limb inside the positioning frame cannot adjust the relative position of the guide device and the patient in a wide range, which will limit the position of the affected limb targeted by the operation. It is only suitable for intramedullary nailing of the tibia or femur, and not suitable for bone fixation at any position; and the positioning frame needs to be disinfected, assembled and disassembled before and after each operation, which is cumbersome and consumes manpower and material resources. The hidden danger of inaccurate positioning brought about by correctness

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