Sternum distraction device

Abstract

The invention discloses a sternum distraction device. The sternum distraction device comprises a guide plate and two parallel distraction arms arranged on the guide plate; at least one distraction armcan move in the length direction of the guide plate; the end, far away from the guide plate, of each distraction arm is hinged with a clamping plate; an adjusting device is further arranged on the guide plate and is used for adjusting the height of the guide plate to control the angle of the clamping plates; the two clamping plates are fixed to the sternum; the position of each distraction arm ismoved to open the sternum, so that an operation area is exposed to provide convenience for surgery operation of a doctor; meanwhile as the guide plate is located at the side of the abdomen and the abdomen position is lower than the chest, the clamping plates can be warped upwards through the distraction arms due to the gravity of the guide plate, and the heart and blood vessels are pulled; the height of a guide rod is controlled through the adjusting device, so that the guide rod and the clamping plates are located at the same height, or the guide rod is higher than the clamping plates so that the gravity center of the guide plate moves to the clamping plates, and the sternum and the wall of the chest are horizontal, thus the problem of traction of the heart and blood vessels caused by upward warping of the end parts of the clamping plates is solved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, and more specifically, to a sternum spreader. Background technique [0002] Since Gebin performed the first open-heart surgery under cardiopulmonary bypass in 1956, cardiac surgeons have routinely used a median chest incision. Although surgeons have tried various surgical approaches for cardiac surgery, it is still generally believed that the median chest incision is the safest and best exposed cardiac surgical approach. The median chest incision needs to split the sternum longitudinally to expose tissues such as the heart and blood vessels for surgery. After the sternotomy, a sternal spreader is needed to pull the longitudinally separated sternum to both sides to expose the surgical field of view. [0003] The current conventional sternal spreader can only pull the sternum to both sides on one plane, but in the operation of congenital heart disease in infants and young children, due...

AI Technical Summary

Problems solved by technology

[0003] The current conventional sternal spreader can only pull the sternum to both sides on one plane, but in the operation of congenital heart disease in infants and young children, due to the immature sternum and incomplete ossification of the sternum and ribs on both sides, the sternal spreader can stretch After opening, the horizontal direction of the sternum and chest wall cannot be guaranteed. The lower part (ventral side) of the spreader is supported on the abdomen under the action of gravity, causing the abdomen to sag, and at the same time, the upper part (head side) of the spreader is turned up, which is harmful to the heart and The vascular structure causes traction, affects the surgical field of view and operating space, and creates pressure on the postoperative edematous heart, especially for infants with small incisions

The current method is to use gauze under the spreader to make the spreader and the sternum close to the horizontal direction, but the height of the gauze cannot be controlled during the operation, and the gauze is relatively soft, which is prone to deformation during the operation

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