Transverse spinal linking device and system

Abstract

A transverse spinal linking device (1 ) links at least one spinal osteosynthesis bar (2) to a transverse bar (3). The device (1 ) may include a first part (11 ) that has a vertical axis and a first jaw (111 ), a second part (12) that has a second jaw (121 ), and a clamping resource (13). The first part (11 ) may include a sliding surface (114), which may be inclined in relation to the vertical axis, and which may mate with at least one sliding surface (124) of the second part (12). The sliding surfaces (114, 124) may be configured so that the descent of the second part (12) results in an approach of the jaws (121, 111 ), with the clamping action of the clamping resource (13) causing the fixing and / or the locking of the device (1 ) on the osteosynthesis bar (2) and the fixing and / or the locking of the transverse bar (3).

Description

technical field [0001] [0001] The present invention relates generally to the field of spinal implants, and more particularly to osteosynthesis devices, spinal support devices and transverse spinal coupling devices. Transverse spinal coupling devices provide a laterally spaced link between two spinal osteosynthetic bars that stabilize the spine and / or correct spinal deformation. Various embodiments of the present invention provide means for coupling an osteosynthetic connecting rod and a transverse connecting rod of at least one spinal column. The osteosynthetic connecting rods of the spine are used to adapt to the physiological or pathological curvature of the spine and to stabilize the latter (pathological curvature) and / or correct its curvature defects. The osteosynthetic connecting rods of these spines are secured along the spine using a source of bony fixation such as pedicle screws or any other type of fixation device. Typically, the osteosynthetic connecting rods of th...

AI Technical Summary

Problems solved by technology

These devices have disadvantages, firstly, these devices are expensive and relatively complex, requiring complex and sometimes unstable assembly, and secondly, the connecting rod is locked between the edge of at least one clamp and the source of clamping, which Will put a lot of stress on the connecting rod and make the connecting rod brittle

These devices also have another disadvantage due to the fact that the jaws tend to close spontaneously even when the source of clamping does not press the connecting rod against the edge of one of the jaws, which makes the device over the osteosynthetic connecting rod. implantation becomes difficult

Sometimes these devices overcome the latter disadvantage by providing a stop element that limits the closure of the two jaws, but this solution adds an additional element and therefore increases the complexity of these devices

Images