Adjustable arc-shaped guide rail-type orbit retractor

Abstract

The invention relates to an adjustable arc-shaped guide rail-type orbit retractor. The adjustable arc-shaped guide rail-type orbit retractor is matched with the length and the radian of a frontal orbit zone, and comprises an adjustable arc-shaped guide rail, a sectional inner orbital border template and a sectional outer orbital border template, wherein the adjustable arc-shaped guide rail is frontal orbit zone-mode guide rail, and consists of symmetrically sectional arc-shaped guide rails and universal joints for connecting the sectional arc-shaped guide rails; a plurality of fixing rod thread grooves and traction rod sliding grooves are formed in the arc-shaped guide rail; a thread screw consistent with the sectional arc-shaped guide rails runs in the middle part of the arc-shaped guide rail; the sectional inner orbital border template and the sectional outer orbital border template are connected onto the lower edge of the frontal orbit zone-mode guide rail in mirror symmetry; a traction screw runs through and is fixed to the sectional inner orbital border template and the sectional outer orbital border template and is connected with the thread screw; the thread screw is rotated to drive any one of the inner orbital border template and the outer orbital border template which are fixed to the traction screw to slide transversely. The adjustable arc-shaped guide rail-type orbit retractor provides the frontal orbit zone-mode guide rail according to age characteristics of child patients to adapt to the radians and lengths of the frontal orbit zones of the child patients with different ages and meet needs of the patients with different ages, so that the best therapeutic effect is achieved.

Description

technical field [0001] The invention relates to an adjustable arc-shaped guide rail type orbital retractor, which is a medical instrument suitable for orbital reconstruction surgery. Background technique [0002] Orbital reconstruction surgery is difficult and risky. At present, the commonly used restoration techniques in clinic include traditional osteotomy bone reorganization + autogenous bone repair and traditional osteotomy bone reorganization + artificial material repair. [0003] At present, the commonly used restoration techniques in clinical practice have their own shortcomings: (1) Traditional osteotomy and bone reorganization + autogenous bone repair: multi-site osteotomy is required during the operation, bone reorganization and fixation are required, the operation risk is high, and bone remodeling is not good ;The defect is repaired with autologous ribs, skull outer plate, iliac crest, etc. The autologous ribs have a large amount of supply and are easy to survive...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used restoration techniques in clinical practice have their own shortcomings: (1) Traditional osteotomy and bone reorganization + autogenous bone repair: multi-site osteotomy is required during the operation, bone reorganization and fixation are required, the operation risk is high, and bone remodeling is not good ;The defect is repaired with autologous ribs, skull outer plate, iliac crest, etc. The autologous ribs have a large amount of supply and are easy to survive, but the absorption rate is high, and secondary deformities appear in the donor site; There is no secondary deformity, but it is difficult to cut out, and the thickness of bone slice filling is insufficient; the autogenous ilium also has disadvantages such as difficulty in obtaining materials and shaping, and the application of the above-mentioned autologous materials increases iatrogenic trauma

(2) Traditional osteotomy bone recombination + artificial material repair: multi-site osteotomy is more traumatic, commonly used artificial materials such as hydroxyapatite artificial bone, porous polyethylene polymer composite materials and titanium metal materials have certain biological characteristics. Compatibility and plasticity, well-formed, but also disadvantages such as rejection, infection, cyst formation and implant displacement

[0005] But the above-mentioned patented technology is only applicable to the mandibular chin

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