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Trigeminal ganglion injection guide plate as well as preparation method and application thereof

A technology of trigeminal nerve and injection guide plate, which is applied in the field of medical models, can solve the problems of inoperability and practicability, high requirements for operator experience, easy damage to important tissues, etc., and achieve good orientation and positioning, good repeatability, The effect of avoiding unnecessary damage

Pending Publication Date: 2018-11-20
PEKING UNIV SCHOOL OF STOMATOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is relatively simple, but relying entirely on manual injection requires high operator experience. Improper operation can easily damage important tissues, and it is not operable and practical in actual application scenarios.

Method used

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  • Trigeminal ganglion injection guide plate as well as preparation method and application thereof
  • Trigeminal ganglion injection guide plate as well as preparation method and application thereof
  • Trigeminal ganglion injection guide plate as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0049] The present invention also provides a method for preparing the above-mentioned trigeminal ganglion injection guide, comprising:

[0050] Insert a puncture needle into the cranial portion exposing the trigeminal ganglion, allowing the puncture needle to enter through the foramen ovale where the trigeminal ganglion emerges from the cranial portion and exit through the facial surface of the cranial portion to find access, thereby determining the reverse Facial needle entry point and approach direction;

[0051] Retain the puncture needle to take an impression and cast a model, the model has a hollow injection channel along the approach direction;

[0052] The computer scans the model to obtain a three-dimensional model image, and performs digital processing on the three-dimensional model image to obtain digital guide plate data;

[0053] The digitized guide plate data was imported into a 3D printing device to prepare the trigeminal ganglion injection guide.

[0054] The ...

Embodiment 1

[0063] The dead rat corpse was taken, the head was separated, the brain tissue was removed, and the trigeminal ganglion at the base of the skull was exposed. like Figure 4 As shown, take two long needles as puncture needles from the trigeminal ganglion out of the cranial foramen ovale and pierce the skin from the facial surface of the cranial specimen, so as to find the access, reversely determine the facial needle entry point and access direction .

[0064] Place a trocar on the puncture needle and keep both, spread a layer of 2mm dental wax on the rat's face, and make an individual tray for the rat's face with a light-cured material. Remove the dental wax, put the impression material into a separate tray, and place it on the face of the rat. After the impression material is hardened, remove it, and the impression is completed. Mixing dental super hard gypsum material into the impression to make a plaster model. like Figure 5 As shown in the figure, the prepared model h...

Embodiment 2

[0066] "Preparation of impression" and "casting model" and the previous steps are the same as in Example 1. The plaster model is coated with a separating agent, and the shapeable light-curing material (Shandong Huge Oral Co., Ltd., the main component of which is methacrylic acid) Salt) is spread on the surface of the plaster model to make it close to the model, forming a fitting part, a support part, a hollow part, and a fixed part in turn. Pay attention to thickening the light-curing material around the puncture needle and catheter that penetrates the skin surface to form an injection channel . After molding, it is cured with a light curing lamp. The trigeminal ganglion injection guide is prepared by removing it after curing.

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Abstract

The invention provides a trigeminal ganglion injection guide plate which comprises a fitting part, a hollow part, a supporting part, a fixing part and two injection channels, wherein the fitting partfits a maxillofacial region; in the hollow part, the soft tissues and a nasal cavity within the nose wing range on the two sides come out; the supporting part is positioned at the upper end of the hollow part and is supported at sclerous tissues of the frons; the fixing part is positioned at the lower end of the hollow part and is provided with a groove fixed at upper anterior teeth; the two injection channels are positioned on the left and right sides of the fixing part; and each of the two injection channels is provided with the admission passage direction reaching the basis cranii oval foramen and is used for enabling an entry needle to puncture and reach the trigeminal ganglion through guidance of the corresponding injection channel. With adoption of the trigeminal ganglion injection guide plate, admission passage of the trigeminal ganglion can be realized with small injury in a simple, fast and precise manner; a preparation technology of the trigeminal ganglion injection guide plate is simple and high in repeatability and has great importance in in vivo research of feeling and algesia of the maxillofacial region.

Description

technical field [0001] The invention relates to a medical model, in particular to a trigeminal ganglion injection guide plate, a preparation method and an application thereof. Background technique [0002] The trigeminal ganglion is composed of pseudosingle-level neuron cell bodies, and its central processes are concentrated into the thick sensory root of the trigeminal nerve, which is the first station of maxillofacial sensory afferents. Important structure, has important research significance. In various animal experiments, it is necessary to obtain the access closest to the trigeminal ganglion in a manner that minimizes damage under conditions that ensure animal survival, so as to facilitate reagent injection and electrophysiological studies. [0003] In the in vivo study, there are two ways to obtain the trigeminal ganglion approach. One is through craniotomy with the aid of a brain stereotaxic instrument, and through puncturing the brain tissue to reach the base of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61D1/00A61D7/00B33Y80/00B33Y10/00
CPCA61D1/00A61D7/00B33Y10/00B33Y80/00
Inventor 曹烨徐啸翔谢秋菲傅开元李伟伟
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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