A processing method for silk composite hemostatic airbag

Abstract

The present invention discloses a processing method of a silk composite hemostatic airbag, including: baking a spunlace silk non-woven fabric, coating a melted medical hot melt adhesive on a release paper using an extrusion wire rod coater, pressing the baked silk non-woven fabric on the coating, cutting the silk non-woven fabric with the release paper according to a preset shape, pasting the silk non-woven fabric to the surface of a TPU hemostatic airbag, placing the hemostatic airbag inside a paper mold and inflating it, and adjusting the silk cutting edge on the inflated hemostatic airbag to align with the fold on the mold, evacuating the hemostatic airbag, and folding the mold and the airbag according to the mold fold, and obtaining a folded silk composite hemostatic airbag after unfolding the mold. The present invention adopts specific lines and divisions to fold the hemostatic airbag, which can ensure that the airbag can be inflated and unfolded more quickly, and at the same time, it will not rotate axially in a large range, causing secondary damage to the wound.

Description

Technical Field

[0001] The invention relates to the technical field of hemostatic airbag production, and in particular to a processing method of a silk composite hemostatic airbag. Background Art

[0002] At present, the common means of rapid hemostasis in first aid on the spot is compression hemostasis, and the commonly used means and equipment for compression hemostasis are tourniquet hemostasis and compression hemostasis. For limb bleeding, a hemostatic bandage is usually used to bind the limb, compress the blood vessels to block the blood flow, and achieve the purpose of hemostasis. For severe bleeding from penetrating injuries to the trunk, a tourniquet cannot be used to effectively stop bleeding, and pressure bandages can only be relied on.

[0003] In the first aid scene, the massive bleeding injuries often cannot be treated in time due to the large amount of bleeding in a short time, which makes the injuries more serious and increases the incidence of closed bleeding in the chest and abdominal cavity and bleeding at the junction (neck, armpit, etc.). At present, there is still a lack of effective control equipment for bleeding at the junction. Neither the tourniquet nor the pressure bandage hemostasis equipment can effectively control the bleeding at the above-mentioned parts. In addition, the bleeding at the above-mentioned parts is closer to the proximal end of the blood vessels, the blood vessels are thicker, and the amount of bleeding and the bleeding speed are more rapid. Therefore, it is very important to develop effective equipment and equipment for controlling bleeding.

[0004] Therefore, it is urgent to study an efficient hemostatic method, especially at the first aid scene, which can fully exert the hemostatic effect, stop bleeding quickly, and will not cause secondary damage to the human body. Summary of the invention

[0005] The purpose of the present invention is to address the defects of the prior art and provide a processing method for a silk composite hemostatic airbag suitable for on-site, especially first aid, to ensure efficient and rapid deployment and use of the hemostatic device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A processing method for a silk composite hemostatic airbag, characterized in that it comprises the following steps:

[0008] S1: using a spunlace silk non-woven fabric containing 100% silk as a raw material, placing the spunlace silk non-woven fabric in a blast drying oven, and baking it at a temperature of 190° C. for 8-9 hours until the spunlace silk non-woven fabric changes from white to golden yellow;

[0009] S2: Place the medical hot melt adhesive in a beaker and place it on a heating platform, melt it at 140°C and keep it warm. Place the release paper and extrusion wire rod coater on the heating platform and preheat for 5 minutes. Fix the release paper on the heating platform and use the extrusion wire rod coater.

[0010] Spread the melted medical hot melt adhesive evenly on the release paper;

[0011] S3: The release paper evenly coated with hot melt adhesive is cooled to room temperature, and the baked spunlace silk nonwoven fabric is pasted to the release paper without wrinkles.

[0012] On the paper, a roller is used to squeeze and roll the spunlace silk nonwoven fabric to remove the bubbles;

[0013] S4: Place the spunlace silk nonwoven fabric with release paper in the laser cutting machine and cut it into a continuous triangle shape according to the predetermined design.

[0014] Cut the silk nonwoven fabric into dough sheet shape;

[0015] S5: Inflate the TPU airbag and fix the two ends, peel off the release paper on the spunlace silk non-woven fabric, and

[0016] The thorny silk non-woven fabric is pasted on the surface of the TPU airbag at a fixed position to form a silk composite hemostatic airbag;

[0017] S6: Divide the continuous triangular curved surface pieces according to the curved surface of the silk composite hemostatic airbag, and divide them by creases according to the dividing lines to make

[0018] Paper folding mold;

[0019] S7: Place the silk composite hemostatic airbag in the paper folding mold, fill the silk composite hemostatic airbag with sufficient gas, adjust the position of the silk composite hemostatic airbag and the paper folding mold, and ensure that the silk cutting gap on the silk composite hemostatic airbag is aligned with the paper folding mold.

[0020] The creases of the folding mold are relatively aligned;

[0021] S8: Use an air pump to evacuate the silk composite hemostatic airbag, and at the same time fold the silk composite hemostatic airbag according to the crease of the paper folding mold.

[0022] The airbag is folded;

[0023] S9: After the air is pumped out, unfold the paper folding mold and take out the folded silk composite hemostatic airbag.

[0024] Furthermore, the spunlace silk nonwoven fabric in S1 is made of mulberry silk as raw material through a spunlace nonwoven fabric process, and has a gram weight of 20-40 g / m 2 , thickness is 1mm and width is 150mm.

[0025] Furthermore, the total length of the extrusion wire rod coater in S2 is 240 mm, the effective coating width is 200 mm, and the coating thickness of the medical hot melt adhesive is 20 um.

[0026] Furthermore, the material used to make the paper folding mold in S6 is 0.25 mm thick kraft cardboard.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Compared with the tourniquet, the silk composite hemostatic airbag can be applied to the heavy bleeding of penetrating injuries at the junction of the trunk and limbs, etc. The charred silk has excellent hemostatic effect and good biocompatibility, and is harmless to the human body. 2. The silk composite hemostatic airbag made by the processing technology is not easy to peel off the silk on the surface of the airbag, and can be tightly bonded to the surface of the TPU hemostatic airbag, which can achieve the dual effects of silk hemostasis and airbag compression hemostasis, and stop bleeding quickly and efficiently. Compared with the existing composite pasting process, the processing technology can ensure the high adhesion of silk and TPU film, and it is not easy to fall off. 3. In order to ensure that the airbag can expand quickly during the inflation process, and ensure that the airbag will not rotate along the axial direction when it is unfolded during the inflation process, the folding process is used to fold the airbag. 4. The airbag is folded by using a paper folding mold. Compared with the ordinary folding method, the folding of the hemostatic airbag using specific patterns and divisions can ensure that the airbag can be inflated and unfolded more quickly, and at the same time, it will not rotate axially in a large range, causing secondary damage to the wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the cutting shape structure of the spunlace silk nonwoven fabric in the present invention.

[0029] Figure 2 It is a schematic diagram of the overall structure of the silk composite hemostatic airbag in the present invention.

[0030] Figure 3 It is a schematic diagram of the folding creases of the paper folding mold in the present invention.

[0031] Figure 4 It is a schematic diagram of the folded shape of the paper folding mold in the present invention.

[0032] Among them: 1- spunlace silk non-woven fabric; 2- TPU airbag; 3- folded peak; 4- folded valley. DETAILED DESCRIPTION

[0033] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0034] A specific implementation method of a silk composite hemostatic airbag processing method comprises the following steps:

[0035] S1: The raw material is 100% spunlace silk nonwoven fabric 1, and its specification is 32g / m 2, thickness 1mm, width 150mm, lay the above-mentioned spunlace silk non-woven fabric 1 in a single layer in a blast drying oven, and bake it at a temperature of 190° C. for 8-9 hours until both sides of the spunlace silk non-woven fabric 1 change from white to golden yellow;

[0036] S2: Adjust the heating temperature of the heating platform to 140°C, place the solid medical hot melt adhesive in a beaker and place it on the heating platform to heat and melt, prepare A4 release paper, lay it flat on the heating platform and fix it, place the extrusion wire rod coater on the release paper and preheat it for five minutes. The total length of the extrusion wire rod coater is 240mm. Pour the melted hot melt adhesive on the release paper, and use the extrusion wire rod coater to quickly scrape the melted hot melt adhesive onto the entire surface of the release paper to form an effective coating width of 200mm and a coating thickness of 20um;

[0037] S3: The release paper evenly coated with the hot melt adhesive is cooled to room temperature, and the baked spunlace silk non-woven fabric 1 is pasted onto the release paper without wrinkles, and the spunlace silk non-woven fabric is squeezed and rolled by a roller to make the spunlace silk non-woven fabric 1 fully bonded to the hot melt adhesive on the release paper and to expel bubbles;

[0038] S4: Place the spunlace silk nonwoven fabric 1 with release paper attached to it in a laser cutting machine, and cut it as follows: Figure 1 The spunlace silk nonwoven fabric 1 is cut into a predetermined continuous triangular curved sheet shape as shown;

[0039] S5: After inflating the TPU airbag 2, fix both ends with a clamp to ensure that the TPU airbag 2 can only rotate along the axis direction, peel off the release paper on the spunlace silk non-woven fabric 1 according to the triangular curved surface slices, ensure that the hot melt adhesive is completely transferred to the spunlace silk non-woven fabric 1, and stick the spunlace silk non-woven fabric 1 with hot melt adhesive on the corresponding surface of the TPU airbag 2 at a fixed position to form a silk composite hemostatic airbag;

[0040] S6: Figure 3 As shown, the paper folding mold is divided into continuous triangular curved surface pieces according to the curved surface of the silk composite hemostatic airbag, and the paper folding mold is made of 0.25 mm thick kraft paper. The kraft paper is creased according to the dividing line, where the dotted crease 4 is the folding valley, and the solid crease 3 is the folding peak. Figure 4 Shown is the paper folding mold after folding;

[0041] S7: Place the silk composite hemostatic airbag inside the paper folding mold, use an air pump to fill the silk composite hemostatic airbag with sufficient gas until the surface of the airbag is completely in contact with the inside of the paper folding mold, and adjust the relative position of the silk composite hemostatic airbag and the paper folding mold to ensure that the silk cutting gap on the silk composite hemostatic airbag is aligned with the fold of the paper folding mold;

[0042] S8: using an air pump to uniformly evacuate the silk composite hemostatic airbag, and at the same time folding the silk composite hemostatic airbag along the folding peaks and folding valleys according to the paper folding mold;

[0043] S9: After the air is pumped out, unfold the paper folding mold and take out the folded silk composite hemostatic airbag.

[0044] The above specific implementation methods are only for illustrating the technical concept and structural features of the present invention, and the purpose is to enable relevant persons familiar with this technology to implement it. However, the above content does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. A processing method for a silk composite hemostatic airbag, characterized in that: The steps include: S1: Using a spunlace silk non-woven fabric (1) containing 100% silk as a raw material, placing the spunlace silk non-woven fabric (1) in a blast drying oven, and baking it at a temperature of 190° C. for 8-9 hours, until the spunlace silk non-woven fabric (1) changes from white to golden yellow; S2: Place the medical hot melt adhesive in a beaker and place it on a heating platform, melt it at 140°C and keep it warm, place the release paper and the extrusion wire rod coater on the heating platform and preheat for 5 minutes, fix the release paper on the heating platform, and use the extrusion wire rod coater to evenly coat the melted medical hot melt adhesive on the release paper; S3: The release paper evenly coated with hot melt adhesive is cooled to room temperature, the baked spunlace silk non-woven fabric (1) is pasted onto the release paper without wrinkles, and the spunlace silk non-woven fabric is squeezed and rolled by a roller to remove bubbles; S4: placing the spunlace silk non-woven fabric (1) with release paper in a laser cutting machine, and cutting the silk non-woven fabric (1) into a predetermined continuous triangular curved surface sheet shape; S5: After the TPU airbag (2) is inflated, the two ends are fixed, the release paper on the spunlace silk non-woven fabric (1) is peeled off, and the spunlace silk non-woven fabric (1) with hot melt adhesive is adhered to the surface of the TPU airbag (2) at a fixed position to form a silk composite hemostatic airbag; S6: Divide the continuous triangular curved surface pieces according to the curved surface of the silk composite hemostatic airbag, perform crease segmentation according to the dividing lines, and make a paper folding mold; S7: placing the silk composite hemostatic airbag in the paper folding mold, filling the silk composite hemostatic airbag with sufficient gas, adjusting the positions of the silk composite hemostatic airbag and the paper folding mold to ensure that the silk cutting gap on the silk composite hemostatic airbag is aligned with the fold of the paper folding mold; S8: using an air pump to evacuate the silk composite hemostatic airbag, and at the same time folding the silk composite hemostatic airbag according to the crease of the paper folding mold; S9: After the air is pumped out, unfold the paper folding mold and take out the folded silk composite hemostatic airbag.

2. The processing method of a silk composite hemostatic airbag according to claim 1, characterized in that: The spunlace silk nonwoven fabric (1) in S1 is made of mulberry silk as raw material through a spunlace nonwoven fabric process, and has a gram weight of 20-40 g / m 2 , thickness is 1mm and width is 150mm.

3. The processing method of a silk composite hemostatic airbag according to claim 1 is characterized in that: The total length of the extrusion wire rod coater in S2 is 240 mm, the effective coating width is 200 mm, and the coating thickness of the medical hot melt adhesive is 20 um.

4. The processing method of a silk composite hemostatic airbag according to claim 1 is characterized in that: The material used to make the paper folding mold in S6 is 0.25 mm thick kraft cardboard.

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