CN108670561A - A kind of development gauze and preparation method thereof - Google Patents

Abstract

The present invention relates to development gauzes and preparation method thereof, the development gauze includes grenadine and is fixed on the development sash on grenadine surface, material used in the development sash is the mixture of silk-screen silica-gel and tungsten powder, prepares and development sash is fixed on grenadine surface using screen printing technique.Compared with prior art, development gauze of the invention and human skin good fit, and development effect is good so that final positioning is more accurate；And prepared by the way of silk-screen printing, product is more durable；In addition, can be as needed, for the fracture of different parts, different development sashes is selected, switches more quick and convenient, strong applicability.

Description

A kind of developing gauze and preparation method thereof

technical field

The invention relates to the technical field of medical devices, in particular to a developing gauze and a preparation method thereof.

Background technique

A fracture is a complete or partial break in the continuity of the bone structure. After timely treatment, the fracture can be fully restored. It is especially important to determine the exact location of the fracture before treatment begins. At present, the most commonly used method for determining fractures is X-ray examination, and doctors determine the location of fractures through the results of X-ray examinations. However, judging only based on X-ray photos requires doctors to have very rich clinical experience. Once a problem occurs, it will cause secondary damage to the patient and increase the pain of the patient. Therefore, how to accurately locate the fracture position has become a major problem in the treatment of fractures.

Chinese patent CN105232073A discloses a positioning device for intracranial hematoma crushing and aspiration, which also uses a developing strip, but the positioning device uses barium sulfate or calcium tungstate as a developer, and barium sulfate or calcium tungstate itself is in a powder state , cannot be formed or fixed, so it is easy to shift during actual use, causing difficulty in positioning and bringing danger to the operation.

Contents of the invention

The object of the present invention is to provide a developing gauze for positioning and a preparation method thereof in order to overcome the defects in the above-mentioned prior art.

The purpose of the present invention can be achieved through the following technical solutions: a developing gauze, the developing gauze includes a mesh and a developing grid fixed on the surface of the grid, the material used for the developing grid is a mixture of silk screen silica gel and tungsten powder . The present invention uses a mixture of silk screen silica gel and tungsten powder as a developer, wherein the silk screen silica gel has good viscosity, and can gather and fix the tungsten powder on the mesh well. At the same time, because the silk screen silica gel has soft characteristics, it makes The entire developing gauze has low hardness and can fit well with the human skin during use to ensure that it will not deviate and improve the positioning effect. The use of tungsten powder is due to the high density of tungsten powder. Since the absorption capacity of an object for X-rays is proportional to the density and thickness, using tungsten as a developing material can greatly reduce the required thickness, making the final product thinner and easier to use. Moreover, the tungsten is stable in nature, non-toxic to the human body, and suitable for medical use. The particle size of the tungsten powder used in the present invention is below 500 mesh.

The mass ratio of the screen printing silica gel to the tungsten powder is 1:(4-7).

The thickness of the developing grid is 0.8-1.5mm.

The mesh is nylon mesh, the aperture of the nylon mesh is 100-500 mesh, and the thickness of the nylon mesh is 0.1-0.3mm. The above-mentioned mesh has the following characteristics: (1) When marking on the nylon mesh with a marker pen, due to the 500-mesh diameter pores on the nylon mesh, the ink can directly pass through the mesh and at the same time be printed on the human body under the mesh. On the skin, after the doctor finishes marking, the operation can be performed by directly tearing off the nylon mesh, which is more convenient to use. (2) Nylon mesh is soft in texture and only 0.1mm thick, which can better fit the contours of the human body and improve the accuracy of X-ray marking.

A positioning pattern and a positioning scale are provided in the developing frame, and the positioning pattern displayed on the developing gauze of the present invention can be adjusted according to different fracture sites, so that it can be applied to the positioning of fractures in different parts.

Preferably, the form of the development grid is as follows: the overall development grid is divided into 10 grids, and there are Arabic numerals and 8 orientation points in the middle of each grid, and there are triangles, circles, and rectangles on the lines between each grid. After marking, the doctor can quickly correspond to the marking points on the developed mesh according to the grid number and orientation point where the marking points are located on the X-ray film. (2) There are scale lines marked at 10mm intervals on each grid, which is convenient for doctors to grasp the distance when marking lines. (3) In order to prevent the developed pattern from blocking the key parts under X-ray, the thickness of all lines, numbers, and positioning points is 1mm, which is also the production accuracy that can only be guaranteed by screen printing. (4) Due to the symmetrical structure of the human body, in order to avoid making it easier to distinguish the left and right when using it, the left and right sides of the overall development pattern are marked with capital English letters L and R. (5) The overall pattern size is about 100*200mm, which can cover the range required by most operations.

The line thickness of the positioning pattern and the positioning scale is 1-2 mm.

A preparation method for developing gauze as described above, comprising the following steps:

(1) Mix silk screen silica gel and tungsten powder evenly, and set aside;

(2) Place the mesh on the screen printing machine, and pour the evenly mixed mixture of screen printing silica gel and tungsten powder onto the screen printing screen of the screen printing machine, and form a developing grid by screen printing, bake and shape, and cool;

(3) Step (2) is repeated until the thickness of the developed grid is 0.8-1.5 mm, and the developed gauze is obtained.

The invention adopts screen printing to fix the developing frame on the mesh, which ensures that the overall thickness of the tungsten powder/silica gel pattern is uniform, and the silica gel itself combines tungsten powder and has good adhesion to the nylon mesh, making the product more durable , and according to the different parts of use, only need to change the screen printing template to form a developing gauze suitable for different fracture parts, which is more convenient.

The baking temperature is 90-120° C., and the baking time is 1-3 minutes.

Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

(1) The developing gauze of the present invention fits well with human skin, and the developing effect is good, so that the final positioning is more accurate;

(2) It is prepared by screen printing, which is easy for mass production. The mixture of silica gel and tungsten powder has good adhesion to nylon mesh, and the product is more durable;

(3) By adopting the method of screen printing, different developing grids can be selected for fractures in different parts according to needs, and the switching is more rapid and convenient, and the applicability is strong.

Description of drawings

FIG. 1 is a schematic top view of the structure of the present invention.

Among them, 1 is the mesh, 2 is the developing frame, 3 is the positioning scale, 4 is the positioning number, and 5 is the positioning point.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

Example 1

A preparation method for developing gauze, comprising the following steps:

(1) First mix 1 part of silk screen silica gel with 5 parts of tungsten powder, and stir until evenly mixed.

(2) Place the 0.1mm nylon mesh on the screen printing machine, then pour the silica gel prepared in the previous step onto the screen printing screen, scrape the silica gel 3 to 4 times repeatedly with a scraper, and remove the nylon mesh with the pattern printed on it. Put it into a 100°C oven and heat it for 3 minutes, then take it out and cool it for 3 minutes.

(3) Place the nylon gauze after the silicone pattern has been cured on the screen printing machine again, repeat the above printing steps 3 times to obtain a 1mm thick developed grid, and finally complete the production of the developed gauze.

The developed gauze obtained through the above is shown in Figure 1. The developed mesh includes a mesh 1 and a developing grid 2 fixed on the surface of the mesh 1. The developing grid 2 includes symmetrical left and right sides, and is marked with L and R , each side includes a positioning scale 3, a positioning number 4 and a positioning point 5.

When in use, stick the above-mentioned developed gauze on the skin near the patient's fracture. Due to the existence of silk screen silica gel, the gauze is soft and has good adhesion, so that it can be close to the skin after being flattened, and then X After light irradiation, the photo obtained by X-ray irradiation will not only show the human skeleton, but also the development grid. According to the position of the fracture in the development grid in the photo, use a marker pen to develop the corresponding development grid on the development gauze In the middle picture mark, the ink is printed on the skin through the developed gauze, and finally the developed gauze is torn off to proceed to the next operation.

Example 2

Adopt developing mesh yarn and preparation method similar to embodiment 1, difference is:

(1) The ratio of silk screen silica gel and tungsten powder in the present embodiment is 1:4;

(2) The aperture of the nylon mesh is 100 mesh, the thickness is 0.1mm, the developed grid is 0.8mm, and the line thickness is 1mm. The pattern of the developed grid is only half of the pattern in the embodiment, and it is used for parts such as hand bones positioning development.

Example 3

Adopt developing mesh yarn and preparation method similar to embodiment 1, difference is:

(1) The ratio of silk screen silica gel and tungsten powder is 1:7 in the present embodiment;

(2) The aperture of the nylon gauze is 500 orders, the thickness is 0.3mm, the developing sash is 1.5mm, and the line thickness is 2mm. The pattern of the developing sash is twice that of the pattern in the embodiment, and is used for such as ribs and other positions Develop positioning.

Claims (8)

1. a kind of development gauze, which is characterized in that the development gauze includes grenadine and is fixed on the development sash on grenadine surface, Material used in the development sash is the mixture of silk-screen silica-gel and tungsten powder.

2. a kind of development gauze according to claim 1, which is characterized in that the mass ratio of the silk-screen silica-gel and tungsten powder is 1:(4~7).

3. a kind of development gauze according to claim 1, which is characterized in that it is described development sash thickness be 0.8~ 1.5mm。

4. a kind of development gauze according to claim 1, which is characterized in that the grenadine is nylon grenadine, the nylon The thickness of 100~500 mesh of aperture of grenadine, the nylon grenadine is 0.1~0.3mm.

5. a kind of development gauze according to claim 1, which is characterized in that be equipped in the development sash registration pattern and Location graduation.

6. a kind of development gauze according to claim 5, which is characterized in that the lines of the registration pattern and location graduation Rugosity is 1~2mm.

7. a kind of preparation method for the gauze that develops as described in claim 1~6 is any, which is characterized in that include the following steps：

(1) silk-screen silica-gel and tungsten powder are uniformly mixed, for use；

(2) grenadine is placed on screen printer, and the mixture of uniformly mixed silk-screen silica-gel and tungsten powder is poured into screen printer On silk-screen halftone, silk-screen forms development sash, and baking molding is cooling；

(3) repeat step (2), until development sash thickness be 0.8~1.5mm to get the development gauze.

8. a kind of preparation method of development gauze according to claim 7, which is characterized in that the temperature of the baking is 90 ~120 DEG C, baking time is 2~4min.