KR20200111920A - Thermoplastic gips for medical - Google Patents

Abstract

The present invention relates to a medical cast which prevents the movement of an injured fracture site when an arm or a leg is broken or sprained. More particularly, the present invention relates to a medical thermoplastic cast which has high thermal processability, can perform an original function thereof as a cast by firmly fixing the cast, and can provide antibacterial properties.

Description

Thermoplastic gips for medical use{THERMOPLASTIC GIPS FOR MEDICAL}

The present invention relates to a medical cast that does not move an injured fracture site when an arm or leg is broken or sprained.More specifically, the cast is not only high in heat processability, but also performs the cast's natural function by firmly fixing the cast. It relates to a medical thermoplastic cast that can be provided with antibacterial properties.

In orthopedic treatment of fractures, dislocations, sprains, etc., the bandages for fixation used to fix and protect the affected part of the patient are referred to as Gips or Casts.

Conventionally, as a method of functioning as a medical cast, a method of wrapping and fixing a plaster-coated bandage on the affected area has been widely used.However, such a procedure can effectively support the affected area as shrinkage occurs during the curing of the plaster. It is impossible, and it takes a considerable amount of time to bandage the affected area, and there is a problem of causing itching while sweating a lot when used for a long time because there is no ventilation.

In order to solve this problem, recently, a cast that is hardened along the shape of a fracture site after heat is applied to a thermoplastic plastic has been widely used.

For example, Patent No. 10-1414493 and Patent No. 10-1538644 disclose a thermoplastic cast having excellent deformability and rigidity, and a method of manufacturing the same.

However, these thermoplastic casts have a disadvantage in that thermal processing properties are lowered by being made of a structure made of a polycaprolactone composite and a shell made of a rubber material. In addition, as shown in Fig. 4, the cast 1 is gradually cooled to room temperature and solidified in a state where both ends of the cast 1 are in contact with each other using a fixing member F such as a clip. Problems that cannot be securely fixed may occur.

On the other hand, since the period required to treat a fracture, etc. is usually 3 to 5 weeks, and more than that, the affected part of the patient, which is compressed and sealed with a cast, cannot be washed for a long period of time, so there is a risk of various skin diseases caused by bacterial propagation. There was a problem in that the patient complained of extreme itching due to this, and was accompanied by a severe odor from the cast contaminated by sweat and various foreign substances, causing discomfort to not only the individual patient but also the surrounding people.

Registered Patent No. 10-1414493 Registered Patent No. 10-1538644

It is an object of the present invention to provide a medical thermoplastic cast that not only has high thermal processability, but also can perform its original function by firmly fixing the cast and can provide antibacterial properties.

According to an aspect of the present invention, in a medical thermoplastic cast, the outer shell forming the upper surface member; A thermoplastic core material that is bonded to the skin and is deformable according to the shape of the fracture site; An endothelium bonded to the thermoplastic core material and in contact with the fracture site; And a fixing member that surrounds the skin and the fracture region while being in contact with the surface of the shell, and has both ends detachably coupled to each other to closely fix the thermoplastic core material to the fracture region, and a plurality of small protrusions protrude from both ends of the fixing member. A male connection portion having an embossed protrusion and a fixing protrusion on a column formed around the embossing protrusion, and a female connection portion having a first fastening part fitted to the embossing protrusion and a second fastening part fitted to the fixing protrusion. do.

The fixing protrusion of the male connection part comprises a cylindrical first coupling part and a first toothed part formed in a circular shape around the first coupling part, and the second coupling part of the female connection part has a ring-shaped rim and It is characterized in that it consists of a cylindrical second coupling portion coupled to the first coupling portion therein, and a second tooth portion formed in a circular shape around the second coupling portion.

The outer shell is characterized in that it is made of any one of plastic foam, synthetic rubber, and natural rubber.

The thermoplastic core material is characterized by consisting of 15 to 30 parts by weight of TPU (Thermoplastic PolyUrethane), 10 to 30 parts by weight of a PLA (poly lactic acid) resin, and 8 to 12 parts by weight of polycaprolactone.

The inner skin is characterized in that it is made of a nonwoven fabric coated with zinc alginate.

The endothelium is composed of a first endothelium bonded to the thermoplastic core material, and a second endothelium bonded to the first endothelium, wherein an antimicrobial substance is embedded in the first endothelium, and the second endothelium allows the discharge of the antimicrobial substance. For this purpose, a plurality of discharge holes extending from the inner surface to the outer surface of the second endothelium are formed in the longitudinal direction.

The antimicrobial material is composed of 40 to 50 parts by weight of titanium oxide (TiO2) powder, 40 to 50 parts by weight of pegmatite powder, and 10 to 20 parts by weight of fermented extract powder obtained by mixing seaweed, kelp, hatchet, hearing, and inequivalent fish To do.

The surface of the shell is characterized in that the S-shaped groove is formed in a transverse direction, which is repeated in an S-shaped wave shape.

According to the medical thermoplastic cast of the present invention, not only has high thermal processability characteristics, but also provides an effect of performing the original function of the cast by firmly fixing the cast and providing antibacterial properties.

In addition, in the present invention, by providing a configuration for discharging an antimicrobial substance, a side effect of removing a feeling of discomfort that a patient may feel from contamination by sweat and various foreign substances is provided.

1 is a plan view of a medical thermoplastic cast according to the present invention,
2 and 3 are views for explaining the configuration of the fixing member of FIG. 1,
4 is a cross-sectional view taken along line BB of FIG. 1,
5 is a view showing in detail a plurality of grooves of FIG. 1.
6 is a view showing a bonding state of a thermoplastic cast according to the prior art.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention can add, change, or delete other elements within the scope of the same idea. Other embodiments included within the scope of the inventive concept may be easily proposed, but it will be said that this is also included within the scope of the inventive concept.

In addition, components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described with the same reference numerals.

Hereinafter, the present invention will be described in detail through the accompanying drawings showing preferred embodiments.

1 is a plan view of a medical thermoplastic cast according to the present invention, FIGS. 2 and 3 are views for explaining the configuration of the fixing member of FIG. 1, and FIG. 4 is a cross-sectional view taken along line BB of FIG. 1, and FIG. 5 is 1 is a view showing in detail a plurality of grooves.

Referring to Figure 1, the medical thermoplastic cast according to the present invention, the outer shell 110 constituting the upper surface member; A thermoplastic core member 120 that is bonded to the outer skin 110 and is deformable according to the shape of the fracture site; An endothelium 130 bonded to the thermoplastic core material 120 and in contact with the fracture site; And a fixing member 150 that surrounds the outer shell 110 and the fracture portion while being in contact with the surface of the outer shell 110, and has both ends detachably coupled to each other to intimately fix the thermoplastic core material 120 to the fracture portion. And, at both ends of the fixing member 150, a male connector 140 having an embossing protrusion 141 in which a plurality of small protrusions protrude, and a fixing protrusion 143 on a column formed around the embossing protrusion 141, and the embossing An arm connection part 142 having a first fastening part 145 fitted into the protrusion 141 and a second fastening part 147 fitted into the fixing protrusion 143 is provided. Here, the male connector 140 is coupled to the surface of the outer shell 110.

The male connector 140 and the female connector 142 may be manufactured in a thin plate shape.

In this embodiment, since the fixing protrusion 143 and the second fastening part 147 are each provided with three (not limited thereto), the coupling positions of both ends of the fixing member 150 are within a certain range. It is configurable to be changed. That is, in FIG. 3, when the fixing protrusions 143 at the front, middle, and rear ends are fastened with the second fastening portions 147 at the front, middle, and rear ends, the basic first coupling position provides tight tightening. In the case where the fixing protrusions 143 of the middle and rear ends are fastened with the second fastening portions 147 of the front end and the middle, as a second engagement position, a slightly loose tightening can be provided when compared to the first engagement position. .

As shown in FIG. 3, the fixing protrusion 143 of the male connection part 140 has a cylindrical first coupling part 143a, and a first tooth part formed in a circular shape around the first coupling part 143a. (143b), and the second fastening part 147 of the female connection part 142 has a ring-shaped rim 147a, and the first coupling part 143a is coupled to the inside of the rim 147a. It consists of a cylindrical second coupling portion 147b and a second toothed portion 147c formed in a circular shape around the second coupling portion 147b.

In such a configuration, since the fixing protrusion 143 of the male connection part 140 and the second fastening part 147 of the female connection part 142 are fastened, the cylindrical first coupling part 143a has a second cylindrical shape. The coupling portion 147b is fitted and coupled, and at this time, since the first tooth portion 143b and the second tooth portion 147c are meshed and assembled, a more robust coupling is possible.

Preferably, the outer shell 110 may be made of any one of plastic foam, synthetic rubber, and natural rubber, which provides a cushioning force to minimize impact when a patient collides with an object.

The thermoplastic core material 120 is formed of a material that can be deformed according to the shape of the fracture site by applying heat.

Preferably, the thermoplastic core 120 is a thermoplastic polyurethane (TPU: Thermoplastic PolyUrethane) 15 to 30 parts by weight, polylactic acid (PLA: poly lactic acid) resin 10 to 30 parts by weight, and polycaprolactone 8 to 12 It is characterized by consisting of.

Since the TPU is manufactured by melting by heat, extrusion, vacuum molding, thermal bonding, and high-frequency processing are possible, and by working in the manner of extrusion and injection, there are no additional additives, and when heat is applied later, it can be re-melted and recycled. Also, extrusion molding and injection molding , Calender molding, etc. are possible, so it has the advantage of very easy processability.

The PLA resin is biodegradable after a certain period of time and does not cause environmental pollution due to disposal, and has the advantage of being eco-friendly because it has antibacterial activity and excellent moisture absorption and retention ability.

In addition, as the polycaprolactone is added, it goes without saying that moisture barrier properties and chemical resistance can be satisfied.

In one embodiment, the inner skin 130 may be made of a nonwoven fabric coated with zinc alginate, and this nonwoven fabric has antibacterial properties through alginic acid processing (impregnated in a zinc alginate solution) on the fiber surface.

In another embodiment, the endothelium 130 is composed of a first endothelium 132 bonded to the thermoplastic core material 120 and a second endothelium 134 bonded to the first endothelium 132, the first 1 An antimicrobial material 132a is embedded in the endothelium 132, and a plurality of the second endothelium 134 extends from the inner surface of the second endothelium 134 to the outer surface to discharge the antimicrobial material 132a. The discharge hole (134a) is formed in the longitudinal direction

Here, the antimicrobial material (132a) is a titanium oxide (TiO2) powder 40-50 parts by weight, Pegamtite powder 40-50 parts by weight, and a fermented extract powder mixed with seaweed, kelp, hatch, hearing, and non-equivalent fish It is characterized by consisting of 10 to 20 parts by weight.

The titanium oxide is selected and mixed to provide a far-infrared radiation function.

In addition, the pegmatite is widely known as a mineral having a function of promoting blood circulation, and may be used as a functional additive.

In addition, the fermented extract obtained by mixing seaweed, kelp, hatban, auditory, and buldeunggasari may be used as a functional additive for antioxidant function.

In relation to these fermented extracts, the present inventors mixed dried seaweed seaweed, kelp, hatch, auditory, and inequivalent fish at a ratio of 10:80:10:10:20 and distilled water (1L) 3 times for 2 hours at 200°C. ) To obtain a complex extract of seaweed by using a high-temperature bath. The obtained extract was fermented with lactic acid bacteria. Lactobacillus culture was added at a concentration of 50% seaweed extract and 2% lactic acid bacteria and fermented for 90 hours in a 38°C incubator. After fermentation, lyophilization was performed to obtain a dry powder of fermented seaweed extract.

5 is a view showing in detail a plurality of grooves of FIG. 1.

Referring to FIG. 5, on the surface of the outer shell 110, an S-shaped groove 160 that repeats in an S-shaped wave shape is formed in a transverse direction.

The S-shaped groove 160 serves to assist the outer shell 110 to be curved in a desired shape, and as a result, the thermoplastic core material 120 to be more easily deformable along the shape of the fracture site. do.

Since the S-shaped groove portion 160 has an S-shaped pattern in which a plurality of groove portions 161 are continuous, a convex portion 163 and a concave portion 165 are formed at an adjacent end portion with the groove portion 161 interposed therebetween. The convex portion 163 is a protruding portion protruding toward the concave portion 165 and has a wider width as the protruding direction proceeds, and the tip portion is rounded. In addition, the concave portion 165 is a groove for accommodating the convex portion 163 therein, and is formed to correspond to the convex portion 163.

The medical thermoplastic cast according to the present invention is hardened along the fracture site, the shape of the arm and wrist by applying heat to a thermoplastic core material having various shapes, and fixed using the fixing member 150 described above.

In the above, the configuration and features of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It will be apparent to those skilled in the art, and therefore, such changes or modifications are found to belong to the appended claims.

110: outer skin
120: thermoplastic core material
130: endothelium
150: fixing member
140: male connection
142: female connection

Claims (8)

An outer shell forming the upper surface member;
A thermoplastic core material that is bonded to the skin and is deformable according to the shape of the fracture site;
An endothelium bonded to the thermoplastic core material and in contact with the fracture site; And
Comprising a fixing member that surrounds the skin and the fracture portion while being in contact with the surface of the outer skin, and has both ends detachably coupled to each other to intimately fix the thermoplastic core material to the fracture portion,
A male connector having an embossing protrusion in which a plurality of small protrusions protrude at both ends of the fixing member and a fixing protrusion on a column formed around the embossing protrusion; Medical thermoplastic cast, characterized in that provided with a female connector having a portion. The method of claim 1,
The fixing protrusion of the male connection part comprises a cylindrical first coupling part and a first toothed part formed in a circular shape around the first coupling part, and the second coupling part of the female connection part has a ring-shaped rim and A thermoplastic cast for medical use, characterized in that consisting of a cylindrical second coupling portion coupled to the first coupling portion therein, and a second tooth portion formed in a circular shape around the second coupling portion. The method of claim 1,
The outer shell is a medical thermoplastic cast, characterized in that made of any one of plastic foam, synthetic rubber, and natural rubber. The method of claim 1,
The thermoplastic core material is a medical thermoplastic cast, characterized in that consisting of 15 to 30 parts by weight of TPU (Thermoplastic PolyUrethane), 10 to 30 parts by weight of PLA (poly lactic acid) resin, and 8 to 12 polycaprolactone. The method of claim 1,
The inner skin is a medical thermoplastic cast, characterized in that made of a non-woven fabric coated with zinc alginate. The method of claim 1,
The endothelium is composed of a first endothelium bonded to the thermoplastic core material, and a second endothelium bonded to the first endothelium, wherein an antimicrobial substance is embedded in the first endothelium, and the second endothelium allows the discharge of the antimicrobial substance. For a medical thermoplastic cast, characterized in that a plurality of discharge holes extending from the inner surface to the outer surface of the second endothelium are formed in a longitudinal direction. The method of claim 1,
The antimicrobial material is composed of 40 to 50 parts by weight of titanium oxide (TiO2) powder, 40 to 50 parts by weight of pegmatite powder, and 10 to 20 parts by weight of fermented extract powder obtained by mixing seaweed, kelp, hatchet, hearing, and inequivalent fish Thermoplastic cast for medical use. The method of claim 1,
A thermoplastic cast for medical use, characterized in that on the surface of the outer shell, an S-shaped groove that repeats in an S-shaped wave shape is formed in a transverse direction.

Images