Intradermal positioning device for lumbar vertebra minimally invasive surgery

A minimally invasive surgery and positioning device technology, applied in the field of medical devices, can solve problems such as inaccuracy and increase operation time, and achieve the effects of reducing radiation, shortening operation time, and accurate positioning

Inactive Publication Date: 2013-10-23
贺石生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method based solely on feeling is not accurate enough, and often requires extensive surgical experience and repeated fluoroscopy

Method used

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  • Intradermal positioning device for lumbar vertebra minimally invasive surgery
  • Intradermal positioning device for lumbar vertebra minimally invasive surgery
  • Intradermal positioning device for lumbar vertebra minimally invasive surgery

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Embodiment 1: as Figure 1-2 As shown in the figure, the locator 1 has a pointed tip inside the skin and a flat tip outside the skin, and several hollow channels for the insertion of the Kirschner wire 2 for intraoperative positioning. like Figure 3-Figure 8 As shown, (this part is better described in conjunction with the figure) according to the position of the pedicle marked on the body surface, the patient's fat and thin, and the head tilt angle of the vertebral body, open 1-1.5cm beside the marked position of the pedicle screw on the body surface Make a skin incision of about 1cm on the left and right (such as image 3 ), inserted into the intradermal positioning device after step-by-step expansion ( Figure 4 ), and then inject 3-4 pieces of Kirschner wires from each intradermal positioning device, carry out positive and lateral X-ray fluoroscopy, and select the appropriate Kirschner wires for puncture positioning ( Figure 5 ), remove the remaining Kirschner w...

Example Embodiment

[0028] Embodiment 2: The inventor has done relevant clinical research on the locator. In 121 patients with lumbar disc herniation combined with lumbar instability and thoracolumbar fractures, the traditional method was compared with the new method. The positioning time was 15.12±4.69min, and the positioning times were 6.47 times. However, the positioning time of the new method using the locator is 5.51±1.32min, and the number of positioning is 2.45 times.

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Abstract

The invention relates to an intradermal positioning device for lumbar vertebra minimally invasive surgery, which is composed of a positioning device made of X-ray transparent materials and a plurality of kirschner wires. The intradermal part of the positioning device is a sharp head, and the extradermal part of the positioning device is a flat head, a plurality of hollow channels are formed in the positioning device, and kirschner wires used for positioning penetrate the hollowchannels. The kirschner wires are the commonly used kirschner wires in orthopedics surgery. The positioning device has the advantages of being high in positioning accuracy, short in positioning time, less in X-ray time, and low in X-ray radiant quantity that a medical staff and a patient receives, thereby having popularization and application values in minimally invasive spine surgery.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an intradermal positioning device in minimally invasive lumbar surgery. Background technique [0002] The advantages of minimally invasive spinal surgery are small trauma, less bleeding, no extensive stripping of paravertebral muscles, minimal damage to the posterior structure of the spine, and no impact on the stability of the spine. Accurate preoperative and intraoperative positioning is very important for minimally invasive spinal surgery. If the positioning is inaccurate, it will inevitably cause unnecessary damage to the rear structure of the spine, thereby increasing the damage. This is especially evident in minimally invasive spinal surgery, such as the implantation of percutaneous pedicle screws. In the past, there was no positioning device. Only through repeated fluoroscopy can the implantation direction and depth of the guide pin be clarified. This method based...

Claims

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Application Information

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IPC IPC(8): A61B17/90
CPCA61B17/3421A61B17/3472A61B17/848A61B2017/3445
Inventor 贺石生
Owner 贺石生
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