CN212913334U

CN212913334U - Ear-hanging type 3D printing surface nerve puncture navigation device

Info

Publication number: CN212913334U
Application number: CN202020916320.2U
Authority: CN
Inventors: 陆丽娟; 王然; 王乃堃
Original assignee: Nanjing Drum Tower Hospital
Current assignee: Nanjing Drum Tower Hospital
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-04-09
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses an ear-hanging type 3D printing surface nerve puncture navigation device, which comprises a guide plate and a puncture column, wherein the guide plate is an arc-shaped plate, one side of the arc-shaped plate is provided with a concave area, the concave area is matched with the shape of an ear, so that the guide plate can be fixed on the head in a mode of being hung on the ear, and the arc-shaped plate at least covers the mastoid process position behind the ear; the guide plate is provided with a puncture column below the recessed area for inserting the puncture needle. The ear-hung type 3D printing surface nerve puncture navigation device of the utility model adopts the ear-hung type guide plate, only covers the back part of the ear, does not need the assistance of adhesive tape, can realize the laminating fixation, and is convenient for puncture guidance; not only saves materials, but also shortens the printing time.

Description

Ear-hanging type 3D printing surface nerve puncture navigation device

Technical Field

The utility model relates to an ear-hanging type 3D printing surface nerve puncture navigation device, which belongs to the technical field of medical instruments.

Background

The facial nerve puncture is a clinical common technique, is mainly used for treating facial spasm or facial paralysis, and can be used for local anesthetic facial nerve blocking, absolute ethyl alcohol facial nerve damage or facial nerve radio frequency treatment (standard radio frequency or pulse radio frequency). The traditional facial nerve puncture method is to insert a needle at the midpoint of a connecting line between the angle of mandible and the mastoid, the front of the insertion direction is positioned in the center of forehead, the connecting line is parallel, the side direction is 30 degrees with the central line, the needle head points to the outer opening of the stem-mammary gland, the needle insertion angle is required to be repeatedly adjusted for many times, and the stem-mammary gland can be found, if the needle is inserted too deeply, blood vessels and peripheral vagus nerves, glossopharyngeal nerves and the like can be damaged, and sometimes adverse reactions such as nausea, vomiting and the like can occur to patients.

The facial nerve puncture can also select to insert a needle from the anterior margin of the mastoid, because the facial nerve goes out of a stem mastoid and then vertically descends to the mastoid at the bone mastoid front margin and forwards passes through the parotid gland to be distributed on the face, the trunk of the facial nerve at the position is relatively fixed, the bony mark is clear, no great vessels and nerves are arranged around the facial nerve, the needle is inserted along the anterior margin of the mastoid in the external auditory canal, the needle insertion path is short, and the patient is easy to have stranguria, so the facial nerve puncture is safer.

The bone structure around the auricle of the patient is reconstructed in three dimensions before the operation, the optimal puncture path is designed, a front puncture path and a rear puncture path can be simultaneously designed for clinical selection if necessary, and a navigation template is printed out in a 3D mode to guide puncture, so that the puncture frequency is reduced, and the operation efficiency and the safety are improved.

Chinese patent document CN204169931A discloses a navigation template for glossopharyngeal nerve navigation puncture, which covers cheek and ear, and adopts nose bridge and ear to locate, and the puncture site is behind the ear lobe. The main problems with this template are:

1. the template is fixed a position through bridge of the nose and ear simultaneously, but in the in-service use process, the baffle is difficult to realize laminating when with two positions of bridge of the nose and ear, need just can glue the template in patient's head with the help of the sticky tape, not only uses inconveniently, has also influenced the accurate nature of baffle moreover.

2. The coverage area of the template is large, more face ranges need to be scanned by CT before operation, data is increased, time for printing the guide plate is long, and more materials are needed.

3. When the guide plate is not well attached to the face and the puncture is difficult, the navigation fails due to the fact that a standby puncture channel is not available, and the operation is still needed by bare hands.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ear-hanging 3D prints face nerve puncture navigation head convenient to accurate puncture.

The utility model adopts the technical proposal that: an ear-hanging type 3D printing surface nerve puncture navigation device comprises a guide plate and a puncture column, wherein the guide plate is an arc-shaped plate, one side of the arc-shaped plate is provided with a concave area, the concave area is matched with the shape of an ear, so that the guide plate can be fixed on the head in a manner of being hung on the ear, and the arc-shaped plate at least covers the mastoid process behind the ear;

the guide plate is provided with a puncture column for inserting the puncture needle above or below the recessed area.

Preferably, the guide plate is provided with a plurality of holes, and the holes play a second role, so that firstly, printing materials are reduced, and the printing time is shorter; the weight of the guide plate is reduced, and the guide plate is more convenient to hang on ears; and secondly, the holes can be ventilated, so that the phenomenon that the skin behind the ears is uncomfortable or allergic due to the fact that the guide plate is hung on the ears for a long time is prevented.

Preferably, the number of the puncture columns is 1-2, two puncture paths are simultaneously designed for clinical selection when necessary, one is a main puncture channel, and the other is a standby puncture channel, so that the navigation success rate is improved.

Preferably, the outer diameter of the puncture column is 5-9 mm, and the length of the puncture column is 5-10 mm.

Preferably, a through hole for inserting the puncture needle is arranged in the puncture column, and the diameter of the through hole is 1-2 mm.

The utility model has the advantages as follows:

the ear-hung type 3D printing surface nerve puncture navigation device of the utility model adopts the ear-hung type guide plate, only covers the back part of the ear, does not need the assistance of adhesive tape, can realize the laminating fixation, and is convenient for puncture guide; the preoperative CT scanning range is smaller, the data volume is less, and the modeling is easier; not only saves materials, but also shortens the printing time.

The holes have the second function, so that firstly, printing materials are reduced, and the printing time is shorter; the weight of the guide plate is reduced, and the guide plate is more convenient to hang on ears; and secondly, the holes can be ventilated, so that the phenomenon that the guide plate is hung on the ears for a long time to cause skin discomfort or allergy is prevented.

Drawings

Fig. 1 is a schematic structural view of embodiment 1.

Fig. 2 is a schematic structural view of embodiment 2.

Fig. 3 is a schematic structural view of embodiment 3.

The present invention will be further described with reference to the accompanying drawings and examples.

Detailed Description

Example 1

As shown in fig. 1, the ear-hung 3D printing surface nerve puncture navigation device comprises a guide plate and a puncture column, wherein the guide plate is an arc-shaped plate 1, one side of the arc-shaped plate is provided with a recessed area 2, the recessed area is matched with the shape of an ear, so that the guide plate can be fixed on the head in a manner of being hung on the ear, and the arc-shaped plate at least covers the mastoid process behind the ear;

the guide plate is provided with a puncture column 3 for inserting a puncture needle below the recessed area, the outer diameter of the puncture column is set to be 5-9 mm, and the length of the puncture column is 5-10 mm. The puncture column is provided with a through hole 4 for inserting a puncture needle, and the diameter of the through hole is determined according to the used puncture needle and is slightly larger than the diameter of the puncture needle, and is usually 1-2 mm.

Example 2

As shown in fig. 2, the structure of the ear-hung 3D printing surface nerve puncture navigation device is basically the same as that of embodiment 1, and the difference is that the guide plate is further provided with a plurality of air holes 5, which play a second role in reducing printing materials and shortening printing time; the weight of the guide plate is reduced, and the guide plate is more convenient to hang on ears; and secondly, the holes can be ventilated, so that the phenomenon that the skin behind the ears is uncomfortable and allergic when the guide plate is hung on the ears for a long time is prevented.

Example 3

As shown in fig. 3, the structure of the ear-hung 3D print surface nerve puncture navigation device is substantially the same as that of embodiment 2, except that the number of puncture posts is two, one is a main puncture channel, and the other is a spare puncture channel.

The ear-hanging type 3D printing surface nerve puncture navigation device disclosed by the invention is implemented in the following specific processes:

A. performing CT thin-layer scanning on the jaw area of a patient to obtain scanning data;

B. importing the scanning data into medical modeling software, establishing a three-dimensional digital model of the maxillofacial skeleton, and marking out a target position for treatment;

c. establishing a simulated optimal puncture needle channel and puncture depth reaching a target position by software according to a three-dimensional digital model, wherein the optimal puncture needle channel needs to avoid important blood vessels and nerves along a road;

D. importing a three-dimensional digital model of a patient and simulated optimal puncture needle track data into software to generate the supra-aural 3D printing surface nerve puncture navigation device, so that puncture holes correspond to the simulated optimal puncture needle track;

E. and the generated data of the puncture navigation device is imported into the 3D printing device to be printed, and then the medical personnel can be delivered for use.

The above description is only one of the embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an ear-hanging 3D prints face nerve puncture navigation head, includes baffle and puncture post, the baffle is the arc, its characterized in that: one side of the arc-shaped plate is provided with a concave area, the concave area is matched with the shape of the ear, so that the guide plate can be fixed on the head in a mode of being hung on the ear, and the arc-shaped plate at least covers the mastoid process behind the ear;

2. The ear-hung 3D printing surface nerve puncture navigation device according to claim 1, characterized in that: the guide plate is provided with a plurality of holes.

3. The ear-hung 3D printing surface nerve puncture navigation device according to claim 1 or 2, characterized in that: the number of the puncture columns is 1-2.

4. The ear-hung 3D printing surface nerve puncture navigation device according to claim 1 or 2, characterized in that: the outer diameter of the puncture column is 5-9 mm, and the length of the puncture column is 5-10 mm.

5. The ear-hung 3D printing surface nerve puncture navigation device according to claim 4, characterized in that: the puncture column is internally provided with a through hole for inserting a puncture needle, and the diameter of the through hole is 1-2 mm.