Minimally invasive repositor for pelvic fracture

Abstract

The utility model discloses a minimally invasive repositor for pelvic fracture, and belongs to the technical field of orthopedic medical instruments. The minimally invasive repositor is used for minimally invasive reposition of pelvic fracture in an operation. The technical scheme is as follows: two parallel reset rods are perpendicular to a cross beam; the upper ends of the two reset rods are connected with the two ends of the cross beam through transverse moving shafts respectively; the central position of the cross beam is connected with a vertical screw rod; the lower end of the screw rodis rotationally connected with the upper ends of two pull rods; the lower ends of the two pull rods are connected with the inner sides of the reset rods through rotating shafts respectively, longitudinal sliding grooves are formed in the inner sides of the lower portions of the two reset rods respectively, two longitudinal sliding blocks are embedded in the two longitudinal sliding grooves respectively, a longitudinal lead screw penetrates through long holes of the reset rods to be connected with the upper ends of the longitudinal sliding blocks through threads, and the lower portions of the two reset rods are connected with bone block hooks and fixing pieces respectively. Fracture displacement of the horizontal plane and the coronal plane can be effectively controlled while minimally invasive reduction is conducted, pelvic fracture reduction is accurate, displacement of a fracture part is avoided, and scientific and technological support is provided for a pelvic fracture minimally invasive reduction operation.

Description

technical field [0001] The invention relates to a surgical instrument for minimally invasive reduction of pelvic fractures during surgery, and belongs to the technical field of orthopedic medical instruments. Background technique [0002] Pelvic fractures are common severe fractures in clinical practice, and they are mostly seen in middle-aged and young people who have suffered high-energy injuries. Due to the complex and changeable fracture morphology, clinical treatment is more difficult. The purpose of pelvic fracture treatment is to restore the shape of the pelvis, restore the line of force of the lower limbs, and reduce complications such as postoperative limb length inequality and traumatic arthritis. The key step in the surgical treatment of pelvic fractures is the reduction of displaced fracture fragments. The commonly used reduction technique is mostly open reduction and internal fixation, which often requires extensive exposure of soft tissues around the pelvis. ...

AI Technical Summary

Problems solved by technology

For type B and type C fractures, closed reduction methods are limited, and the fracture fragments in patients are more displaced, and the risks of postoperative soft tissue adhesion, wound infection and nerve injury are greatly increased

Images