JP2002282295A - Coldness and warmth keeping pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling pad having superior adhesiveness to a joint part and high productivity. SOLUTION: This coldness and warmth-keeping pad is constituted by a flexible plastic-made bag and a cold insulator and heat insulator sealed in the bag. The bag is formed by a substantially central part located in the outer surfaces of joints of a shoulder, elbow and knee, or a corner part such as the outer surface of a heel, and a peripheral abutting part abutting on the peripheral parts. Fusing parts are formed on the peripheral abutting part to divide the interior into plural sections, and the sections are put in the communicating state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pad for cooling and warming which is used by being attached to a joint of a limb such as a knee, an elbow, a wrist, an ankle and the like. The present invention relates to a cooling / heating pad that is preferably used for

[0002]

2. Description of the Related Art Conventionally, as a method of cooling an inflamed joint caused by exercise or surgery, a flexible plastic sheet is superposed and the peripheral edge thereof is fused to form a bag. There is known a method of using a cooling pad in which a cooling agent is sealed in a body and applying the pad to a joint to cool the pad. As a cooling agent, a gel-like material is generally used because it can minimize contamination due to liquid leakage at the time of bag breakage, is excellent in cooling performance, and has moderate flexibility even under ice temperature. .

[0003] However, in the cooling pad having such a configuration, even if the bag body and the cooling agent have appropriate flexibility,
In the state where the bag is filled with the cooling agent, the flexibility of the pad decreases due to the thickness of the pad, making it difficult to adhere to the joints,
There has been a problem that the cooling capacity is inferior. In addition, when the cooling pad is bent by applying force,
There is also a problem that a portion having an extremely large amount of the heat retaining agent and a portion having a very small amount of the heat retaining agent are generated, and a difference is caused in the cooling capacity partially.

[0004] As a method of solving the above problem, it is conceivable to fuse the inside of the bag at appropriate intervals to form a plurality of blocks and fill each block with a cooling agent. According to this method, since the cooling agent is divided into each block, it is possible to easily bend both sides of the fused portion and to improve the adhesion to the joint.

[0005]

However, in the cooling pad having the above-mentioned structure, it is necessary to fill a cooling agent for each block, and the production process becomes complicated, resulting in a problem of low productivity.

In view of the above circumstances, an object of the present invention is to provide a cooling pad having excellent adhesion to a joint and high productivity.

[0007]

In order to achieve the above-mentioned object, a cooling / heating pad according to the present invention comprises a flexible plastic bag and a cooling / heating agent sealed in the bag. The bag body consists of a shoulder, an elbow, a substantially central portion located at a corner portion such as an outer surface of a joint such as a knee, or an outer surface of a heel, and a peripheral contact portion that contacts a peripheral portion of the corner portion. The peripheral contact portion is formed with a fused portion for dividing the inside into a plurality of sections, and each section is in a communicating state.

According to the above construction, the interior of the peripheral contact portion is divided into a plurality of sections by the fusion portion, and the cooling / heating agent is divided, so that the cooling / heating agent having improved flexibility and excellent adhesion is provided.
A pad for keeping heat can be obtained. In addition, since each section is in a communicating state, the cooling / heating agent flows in the section in an appropriately controlled state, so that the cooling / heating agent can be uniformly cooled without partial excess / deficiency of the cooling / heating agent. Insulation becomes possible.

Further, since the compartments are in communication with each other, the filling of the cooling / heating agent into the inside of the bag can be performed by forming only one injection port in the bag when filling the cooling / heating agent. Becomes possible.

[0010] The fused portion can be formed in any shape such as an arc shape or a lattice shape. In particular, if each section is formed so as to be radially arranged with a substantially center portion as a center, it can be formed in another shape. This is preferable in that the flexibility at the peripheral contact portion can be further increased.

More specifically, each section is formed by arranging a plurality of fusion parts radially in a peripheral contact part around a substantially central part. Each section is in a communicating state in at least one of a substantially central portion, a peripheral portion, or an intermediate region of the bag body. That is, the upper and lower sheets constituting the bag body are heat-sealed at a plurality of locations to form a fusion zone, and when the peripheral contact portion is divided into a plurality of sections, the fusion zone does not reach a substantially central portion. Thereby, each section can be brought into a communication state at a substantially central portion. Moreover, if it is a fusion | bonded part which does not reach a bag peripheral part, it can be in a communication state in the vicinity of a bag peripheral part. Furthermore, each section can be brought into a communicating state by setting the intermediate portion in each of the fused portions in a discontinuous state.

Further, as described above, the substantially central portion is formed as one section by forming the fusion portion not reaching the substantially central portion,
When the respective sections formed in the peripheral contact portion are communicated with the substantially central portion, the filling of the cooling / heating agent can be performed more smoothly. That is, when filling the inside of the bag body with the cooling / heating agent, usually an injection port is provided in advance at the outer peripheral edge of the bag body, and after the cooling / heating agent is injected into the bag body from there,
A method is adopted in which the bag is closed by fusing the inlet. In such a case, when the cooling / heating agent is injected into the bag having the above-described configuration, the cooling / heating agent is sent to the substantially central portion through the section of the peripheral contact portion close to the injection port, and from there, the other cooling agent is transferred. Since they are distributed directly to the compartments, they have low resistance during injection and allow smooth filling.

Further, if the compartments are in communication with each other near the periphery of the bag as a fusion bonding portion that does not reach the periphery of the bag, both the substantially central portion and the vicinity of the periphery can be used during the injection of the cooling / heating agent. Since each compartment is filled with the cooling / heating agent, it becomes possible to fill even a high-viscosity gel in a short time.

The substantially central portion is a portion located at a corner portion such as an outer surface of a joint such as a shoulder, an elbow or a knee, or an outer surface of a heel portion. When the substantially central portion is entirely filled with a cooling / heating agent, It is difficult to follow the corners, and the flexibility of the cooling / heating pad is hindered, and the adhesion may be reduced. Therefore, in the present invention, it is possible to adopt a configuration in which a through hole is formed in a substantially central portion, and by applying a through hole to a corner portion, the adhesion of the cold / heat insulating pad to the corner portion is improved, and the joint portion is formed. Stable mounting to the whole is possible.

The bag may be formed by laminating and sealing a flexible plastic sheet, for example, by heat-sealing, and if the fused portion is formed simultaneously with the heat-sealing, the productivity is reduced. Thus, it is possible to form the fused portion without causing the fusion. The bag body may be of various forms such as a circle and a square, but a substantially central portion is located at a corner portion such as an outer surface of a joint portion or an outer surface of a heel portion, and a peripheral contact portion is arranged along the peripheral portion. From a usage aspect, it is preferable to use a rectangular shape because it has a large cooling / heating area and the peripheral contact portion can be wrapped around the peripheral portion and fixed.

The material of the bag is not particularly limited as long as it is made of a fusible plastic, and examples thereof include polyolefins such as polypropylene and polyethylene, polyvinyl chloride, polyamide and polyurethane. it can. Further, it is also possible to use a laminate in which a fusible resin sheet such as polyethylene is laminated on the inner layer side and a resin sheet having poor fusibility such as polyester is laminated on the outer layer side.

As described above, the cooling / heating agent can minimize the contamination due to liquid leakage at the time of bag breakage.
It is desirable to have excellent heat retention and to have appropriate flexibility even under ice temperature, and a high-viscosity fluid or gel-like material is preferably used. As a thickener or a gelling agent for forming a high-viscosity fluid or a gel-like substance, carboxymethyl cellulose, polyvinyl alcohol, sodium polyacrylate and the like can be suitably used, and further, a polyhydric alcohol and the like can be used. By appropriately adding a freezing point depressant, a cooling / heating agent having flexibility even at a low temperature can be obtained.

The above-mentioned pad for cooling / heating is provided with a function of suppressing inflammation by being attached to a joint in a state of cooling by cooling, and is attached to a joint in a state of storing heat by heating. May have a function of promoting blood circulation, or may have both functions.

In order to improve the flexibility of the pad, it is desirable to form a notch in the bag. The angle and the position of the notch may be appropriately adjusted, but in order to make the cooling / heating pad closely adhere to the peripheral portion, the peripheral contact portion is formed by at least two or more divided bodies while leaving a substantially central portion. It is preferable that the cutout is formed on the same line on the left and right with the substantially central portion interposed therebetween, and the bag body portion above this line is wrapped around the upper peripheral portion of the corner portion, If the lower bag portion is wound around and fixed to a lower peripheral portion of the corner portion, the pad does not slip down during use, and stable mounting is possible.

A fixing band may be used to attach the cooling / heating pad to the joint. Fixed band is cool
It may be formed separately from the heat retaining pad, but preferably, it is fixed to the end of the bag, so that it has excellent portability.
A pad for heat retention can be obtained.

As a mode of fixing the fixing band to the bag, either a mode in which the fixing band is fixed to two opposite sides of the bag or a mode in which the fixing band is fixed to one side may be adopted. There is no particular limitation on the fixing means of the fixing band.For example, a fixing means provided with a hook at the end of the band can be used, but if the hook-and-loop fastener is used, the band can be fixed at an arbitrary position. Become. In a case where the fixing band is fixed to one side, a hook-and-loop fastener can be suitably used as the locking means. Specifically, a male or female type of hook-and-loop fastener is formed on the entire surface of the band, and the other end of the band is formed with the other type of hook-and-loop fastener on the back surface. Then, the hook-and-loop fastener formed at the front end of the back surface may be locked at an arbitrary position on the front surface.

The material of the fixing band is not particularly limited as long as the bag can be fixed to the joint portion.
By using a material that can be extended and contracted in the length direction, it is possible to obtain a cold / heat keeping pad that is excellent in the feeling of adhesion between the bag and the joint.

In this case, if the fixing band is wound around the peripheral portion together with the peripheral abutment at least once, it is possible to prevent the amount of the cooling / heating agent at the substantially central portion from being reduced, thereby providing a more uniform cooling band. Cooling becomes possible. In other words, the substantially central portion is the portion that is bent most when it comes into contact with the corner portion. The bending of the corner portion generates a force that presses the pad at the approximately central portion, and the cooling / heating agent is applied from the substantially central portion to the peripheral portion. Attempts to flow to the abutment. Therefore, if the surface of the peripheral contact portion is appropriately compressed by the stretching force of the fixing band, the flow of the cooling / heat insulating agent is suppressed, and thereby the cooling / heating agent is not partially excessive or insufficient, and the cooling is uniform. Becomes possible.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a pad for cooling and warming according to the present invention. FIG. 1 is a plan view showing a pad for keeping cool and keeping warm. A pad 1 for cooling and warming is formed by laminating and fusing two plastic sheets, and a bag 2 having a substantially rectangular shape.
And a fixing belt 3 fixed to the short side of the bag 2, and a cooling / heating agent is sealed in the bag 2.

The bag 2 includes a substantially central portion 4 having a through hole 5 and a peripheral contact portion 6. The peripheral contact portion 6 has a plurality of fused portions 7 centered on the substantially central portion 4. The inside of the peripheral contact portion 6 is radially arranged, and a plurality of sections 8
Are divided into

The fusion part 7 is not formed in the substantially central part 4, and therefore, the substantially central part 4 and each section 8 of the peripheral contact part 6 are in communication. In addition, the outer peripheral side end of the fused portion 7 is discontinuous at an interval from the outer peripheral edge 9 of the bag body,
Even in the vicinity of the outer peripheral edge 9, each section 8 is in a communicating state.

At the center of the short side of the bag 2, a notch 10
The peripheral contact portion 6 is divided into an upper peripheral contact portion 6a and a lower peripheral contact portion 6b by the two cutout portions 10, 10.

Further, two fixed belts 3 are fixed to one short side of the bag body 2 with a cutout portion 10 interposed therebetween. A female surface fastener 3b is formed on the entire surface of the fixed belt 3, and a male surface fastener 3a is formed on the front end of the back surface.

FIG. 2 is a plan view of the bag showing a state before the cooling / heating agent is enclosed. The arrow in the figure is the bag 2
The flow of the cooling / heating agent injected inside is shown. As shown in the figure, an injection port 11 for injecting a cooling / heating agent is formed at the center of one long side of the bag. When the cooling / heating agent is injected from the injection port 11, a part of the cooling / heating agent is sent to the substantially central portion 4 through the sections 8a and 8b close to the injection port 11, and is filled into the other sections 8 therefrom. And
The remainder is filled in each section 8 through a discontinuous portion near the outer peripheral edge 9.

As described above, since the cooling / heating agent is filled into each section 8 from a plurality of routes, even a high-viscosity gel-like material can be filled quickly and smoothly. After the filling of the cooling / heating agent is completed, heat sealing is performed at the portion indicated by the broken line D, and at the same time, the injection port 11 is cut to produce the cooling / heating holding pad 1.

FIG. 3 is a diagram showing a use state of the cooling / heating pad having the above-described configuration. The figure shows a state in which the pad 1 for cooling / heating is attached to the knee. The procedure for mounting the pad 1 is as follows. First, the through hole 5 of the pad 1 for cooling and warming is put on the kneecap A, the upper peripheral contacting portion 6a is brought into close contact with the thigh B side, and the lower peripheral contacting portion 6b is calfed. Adhere to the side.

Next, the fixed belt 3 fixed to the upper peripheral contact portion 6a is wound around the thigh B from the rear side and wound once so as to cover the pad surface. The mold surface fastener 3a is engaged with the female mold surface fastener 3b formed on the belt surface. Similarly, the fixing belt 3 fixed to the lower peripheral contact portion 6b is wound around the calf C and fixed.

The cooling / warming pad 1 mounted in this manner is in close contact with the entire knee, so that good cooling or warming is possible.

[0034]

As is apparent from the above description, according to the present invention, the peripheral contact portion of the bag body comprising the substantially central portion located at the corner of the human body and the peripheral contact portion contacting the peripheral portion. In addition, a fused portion that divides the inside of the bag into a plurality of compartments is formed, and the compartments are connected to each other, so that it is possible to obtain a pad for cooling and warming having improved flexibility and excellent adhesion, and At the time of filling the heat insulating agent, it is possible to fill the cooling agent all over the inside of the bag simply by forming one inlet for the cold insulating agent in the bag.

By arranging the fusion parts radially about the substantially central portion, the flexibility of the peripheral contact part can be further improved as compared with the case where the fusion parts are formed in another shape.

If a through hole is formed substantially at the center, the adhesion of the cooling / heating pad to the corner can be improved.

Further, by forming a cut-out portion in which the peripheral contact portion is divided into at least two or more divided bodies, it is possible to obtain a cooling / heating pad having high cooling efficiency in close contact with a peripheral portion.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a cooling / heating pad according to the present invention.

FIG. 2 is a plan view showing a state of the bag before filling with a cooling / heating agent.

FIG. 3 is a diagram showing a use state of the pad for keeping cold and warm;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling / heating pad 2 Bag 3 Fixing band 4 Approximately central part 5 Through hole 6 Peripheral contact part 7 Fused part 8 Section 9 Outer peripheral part 10 Notch part 11 Inlet

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) A61F 7/10 330 A61F 7/10 330K 330P F-term (Reference) 4C098 AA02 BB03 BB09 BB11 BC04 BC06 BC13 BC34 BC36 BC37 DD05 DD23 DD24 DD25 DD26 DD28 4C099 AA05 CA07 CA09 CA12 GA02 HA04 LA01 LA07 LA08 LA11 NA02

Claims (6)

[Claims] 1. A plastic bag having flexibility,
The bag comprises a cooling / heat insulating agent sealed in the bag, and the bag comprises a substantially central portion positioned at a corner portion such as an outer surface of a joint such as a shoulder, an elbow or a knee, or an outer surface of a heel portion, and the corner portion. And a peripheral abutting portion that abuts on a peripheral portion of the vehicle, wherein the peripheral abutting portion is formed with a fused portion that divides the inside into a plurality of sections, and each section is in a communicating state. Insulation pad. 2. The cold storage / cooling system according to claim 1, wherein said fusion parts are radially arranged about a substantially central part.
Insulation pad. 3. The apparatus according to claim 1, wherein said substantially central portion has a through hole.
Or the pad for keeping cold and warm according to 2. 4. The peripheral contact portion, wherein the notch portion having the peripheral contact portion as at least two or more divided bodies is formed in the peripheral contact portion except for the substantially central portion. Cooling and warming pad. 5. The cooling pad according to claim 4, wherein said cutout portion is formed on the same line as the left and right sides of the substantially central portion. 6. The cooling pad according to claim 1, further comprising a fixing band for fixing the peripheral contact portion of the bag around the human body.