Multi-dimensional internal fixation device and method for treating pelvic posterior ring fracture dislocation

A technology of posterior pelvic ring and fracture dislocation, applied in the directions of internal fixator, fixator, internal bone synthesis, etc., can solve the problems of insufficient fixation, large exposed area, long operation time, etc., so as to achieve a small trauma surface and improve stability. , a wide range of effects

Pending Publication Date: 2021-10-01
SHANGHAI PUDONG NEW AREA PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods usually use long steel plates for bending, but this fixation method is complicated to operate, the exposed area is large, the operation time is long, and the fixation is not stable enough

Method used

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  • Multi-dimensional internal fixation device and method for treating pelvic posterior ring fracture dislocation
  • Multi-dimensional internal fixation device and method for treating pelvic posterior ring fracture dislocation
  • Multi-dimensional internal fixation device and method for treating pelvic posterior ring fracture dislocation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment is provided with a group of pedicle longitudinal fixation units 2, such as figure 1 As shown, it includes an ilium transverse fixation unit 1 , a pedicle longitudinal fixation unit 2 and an adjustment unit 3 , and the ilium transverse fixation unit 1 is connected to the pedicle longitudinal fixation unit 2 through the adjustment unit 3 . When fixing the fracture and dislocation of the posterior pelvic ring, the ilium transverse fixation unit 1 and the pedicle longitudinal fixation unit 2 are connected through the adjustment unit 3 , and the position and strength of the fixation are adjusted through the adjustment unit 3 .

[0039] Such as figure 2 As shown, the lateral ilium fixation unit 1 includes a cross bar 7 , an ilium fixation screw 8 passing through the cross bar 7 , and a third screw 9 clamping the cross bar 7 and the ilium fixation screw 8 . The ilium fixation screws 8 are driven in along the posterior superior iliac spine pointing to the same...

Embodiment 2

[0049] Such as Figure 4-5 As shown, the difference between this embodiment and the first embodiment is that the pedicle longitudinal fixation unit 2 is provided with two groups. An auxiliary fixation unit is provided between the two groups of pedicle universal screws 5, and the auxiliary fixation unit includes an auxiliary screw 19, and the side wall of the auxiliary screw 19 is provided with a groove for being stuck on the vertical rod 4 20, the part provided with the groove 20 is arranged oppositely, the nail rod 21 is passed through the auxiliary screw 19, the nail rod 21 is intersected with the vertical bar 4, and the auxiliary screw 19 is threaded to be used for nailing The second top wire 35 that rod 21 clamps. In order to further improve the stability, two vertical bars 4 are set, and an auxiliary fixing unit is arranged between the two vertical bars 4, wherein, the side of the auxiliary screw 19 is provided with a groove 20, and when in use, the vertical Auxiliary s...

Embodiment 3

[0055] Such as Image 6 As shown, the difference between this embodiment and the second embodiment is that if the patient still has a sacral fracture, and the location of the sacral fracture is near the upper part of the ilium, a sacral fixation unit 22 is pierced on the cross bar 7 . The sacral fixation unit 22 is a first sacral universal screw 23 passing through the cross bar 7 . Wherein, the first sacral universal screw can rotate universally 23, and is clamped by the top screw. With this scheme, the scope of use of the fixation device can be expanded. Once the patient has multiple fractures of the ilium and sacrum, multiple fixation devices are not needed, and only one device can be used.

[0056] Such as Figure 7-8 As shown, if the patient has a sacral fracture, and the location of the sacral fracture is at the lower part of the sacrum, the sacral fixation unit 22 includes a connecting piece 24 that passes through the cross bar 7, and the connecting piece 24 is fixed w...

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Abstract

The invention discloses a multi-dimensional internal fixation device and method for treating pelvic posterior ring fracture dislocation, wherein the multi-dimensional internal fixation device comprises an ilium transverse fixation unit, at least one group of vertebral pedicle longitudinal fixation unit and an adjusting unit; the ilium transverse fixation unit is connected with the vertebral pedicle longitudinal fixation unit through the adjusting unit; the vertebral pedicle longitudinal fixation unit comprises a vertical rod, a vertebral pedicle universal screw arranged on the vertical rod in a penetrating mode and a first jackscrew for fixing the vertical rod and the vertebral pedicle universal screw; the ilium transverse fixation unit comprises a transverse rod, an ilium fixing screw arranged on the transverse rod in a penetrating mode and a third jackscrew for clamping the transverse rod and the ilium fixing screw; and the adjusting unit comprises a first adjusting screw and a second adjusting screw, the first adjusting screw is arranged on the outer side of the vertical rod in a sleeving mode, and the second adjusting screw is arranged on the transverse rod in a penetrating mode. The device has the advantages that the transverse rod is straight and does not need to be bent in advance, the exposure time of a wound surface is shortened, and the wound surface is small when the device enters the pelvic posterior ring of the human body.

Description

technical field [0001] The invention relates to the technical field of fracture internal fixation devices, in particular to a multidimensional internal fixation device and method for treating fracture and dislocation of the posterior pelvic ring. Background technique [0002] The pelvis is a complete circular closed bone ring. It is an important structure connecting the human trunk and lower limbs, and transmits the gravity from the trunk to the lower limbs. Damage to the stability of the pelvis will affect the standing and walking of the human body, and even endanger life. The posterior pelvic ring is the intersection of upper body load or lower body load, which accounts for 70% of the total pelvic load. The posterior pelvic ring is not only the only way for the human body to bear or load, but also the main structure to maintain the stability of the pelvic ring. There are many possibilities for the injury of the posterior pelvic ring: fracture of the ilium, dislocation of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/68A61B17/86A61B17/70
CPCA61B17/683A61B17/86A61B17/7001A61B17/7014
Inventor 禹宝庆张俊
Owner SHANGHAI PUDONG NEW AREA PEOPLES HOSPITAL
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