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
4 Cites 12 Cited by

AI-Extracted 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...
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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.

Application Domain

Technology Topic

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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(2)

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 wires ( Image 6 ). If there is no suitable Kirschner wire, leave the Kirschner wire closest to the satisfactory position ( Figure 7 ), and then adjust the position through the intradermal positioning device and select the appropriate Kirschner wire for positioning ( Figure 8 ).
[0021] Work process of the present invention is as follows:
[0022] A: Insert the intradermal positioning device after step-by-step expansion;
[0023] B: Insert 3-4 pieces of Kirschner wires into each intradermal positioning device, and perform positive and lateral X-ray fluoroscopy;
[0024] C: Select a Kirschner wire at a suitable position for puncture positioning;
[0025] D: The red mark in the figure is a suitable Kirschner wire;
[0026] E: If there is no suitable Kirschner wire, leave the Kirschner wire closest to the satisfactory position;
[0027] F: Adjust the position through the intradermal positioning device and select the appropriate Kirschner wire for positioning.

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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Description & Claims & Application Information

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