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Method for percutaneous positioning of internal fixation screw channel of femoral neck fracture screw

A technology for femoral neck fracture and fixing nails, which is applied in the field of medical devices, can solve problems such as bone deterioration, radiation, and large trauma, and achieves the effect of reasonable spatial configuration of nail placement, simple operation method, and precise nail placement.

Pending Publication Date: 2021-08-06
宁波市杭州湾医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the limitation of the human eye, the position of the entrance of the fixing screw cannot be directly observed due to the barrier of the skin and muscles, nor can the direction of the screw path be judged.
However, incision screw internal fixation under fluoroscopy requires long operation time, repeated fluoroscopy, radiation, large trauma, heavy bleeding, limited control of screw distribution, multiple adjustments and insertion of screws will deteriorate the bone quality, and the screw fixation is not reliable.

Method used

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  • Method for percutaneous positioning of internal fixation screw channel of femoral neck fracture screw
  • Method for percutaneous positioning of internal fixation screw channel of femoral neck fracture screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a device for percutaneous positioning of the femoral neck fracture screw internal fixation screw track proposed by the present invention includes a developing sticker 2, a positioning channel 3, a nail setting channel 4 and a percutaneous guide plate 6; one side of the developing sticker 2 is set as The sticking surface is provided with a scale mark on the other side; the percutaneous guide plate 6 is positioned through the developing sticker 2;

[0028] In an optional embodiment, three sets of positioning channels 3 are provided, and each set of positioning channels 3 cooperates with positioning Kirschner wires.

[0029] In an optional embodiment, three groups of nail-setting channels 4 are provided, and each group of nail-setting channels 4 cooperates with positioning Kirschner wires and bone screws.

[0030] In an optional embodiment, the bone screw is a hollow structure.

Embodiment 2

[0032] Such as figure 2 As shown, a kind of femoral neck fracture screw internal fixation nail track percutaneous positioning method proposed by the present invention, the steps are as follows:

[0033] S1. Paste developing sticker 2 on the skin of the patient's affected area in advance (a kind of surgical positioning aid that can be displayed under X-rays. This patent includes but is not limited to using developing sticker 2. Any other that can be pasted on the patient's skin CT imaging, which can be used as a reference position, can be used), and CT shooting is performed according to the surgical position, so that the imaging sticker 2 can be displayed together during CT shooting;

[0034] S2. Using the medical imaging 3D reconstruction software, the bones, skin, and imaging stickers 2 in the CT are used for 3D modeling;

[0035] S3. Attach the developing sticker 2 to any three points on the skin of the affected area, and use the software to establish three positioning cha...

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Abstract

The invention provides a method for percutaneous positioning of an internal fixation screw channel of a femoral neck fracture screw, and relates to the field of medical instruments. The method comprises the following steps: during preoperative CT (Computed Tomography), pasting a developing patch on the skin of a patient, performing three-dimensional reconstruction on CT data by using three-dimensional medical image modeling software, and designing a percutaneous guide plate; finding a positioning point of a percutaneous guide plate through scale marks of the developing patch, directly placing a positioning kirschner wire through the positioning channel, positioning the percutaneous guide plate, and then placing the positioning kirschner wire and a bone screw through a guide plate screw placement channel. The operation method is simple, accurate screw placement is achieved, the screw placement space configuration is reasonable, and when radiation is avoided, the kirschner wire and the bone screw are successfully driven and positioned at one time.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a method for percutaneous positioning of a femoral neck fracture screw internal fixation screw track. Background technique [0002] Due to the limitation of the human eye due to the barrier of the skin and muscles, it is impossible to directly observe the position of the entrance of the fixing screw, and it is also impossible to judge the direction of the screw path. However, incision screw internal fixation under fluoroscopy requires long operation time, repeated fluoroscopy, radiation, large trauma, heavy bleeding, limited control of screw distribution, multiple adjustments and screw insertions make bone quality worse, and screw fixation is not secure. [0003] Therefore, precise screw placement, reasonable space configuration for screw placement, and successful penetration of hollow nail guide pins at one time while avoiding radiation have always been the constant pursuit of ort...

Claims

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Application Information

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IPC IPC(8): A61B17/88A61B17/90A61B34/10A61B90/00
CPCA61B17/88A61B17/8897A61B90/39A61B34/10A61B2090/3983A61B2090/3966A61B2034/105A61B2034/108
Inventor 王清泽劳立峰鲍军国罗明星罗文礼何榕真周荣立袁欣华郑轶杨春喜杜琳
Owner 宁波市杭州湾医院
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