JP3766506B2 - Protective layer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protective material that can hold and protect medical needles such as suture needles, injection needles, and inspection needles, and medical blades such as surgical scalpels and ophthalmic knives.
[0002]
[Prior art]
Medical needles represented by suture needles are generally stored or distributed in a state where the needle tip is pierced and held in a plate-like protective body made of a foamed material such as polyethylene or polyurethane. In addition, medical blades represented by ophthalmic knives, with handles, are stored or distributed in blister packs formed so that the cutting blade can be inserted into a protective body and the handle can be held. It is common.
[0003]
On the other hand, the medical needles and the medical blades are required to have a good sharpness because they pierce or tear a living tissue. The sharpness greatly affects the resistance generated when a living tissue is pierced or torn by medical needles or medical blades. For this reason, in order to reduce the resistance, a coating layer is formed by applying or baking silicone on the surfaces of these medical needles and medical blades (Japanese Patent Publication No. 6-20461). Issue gazette).
[0004]
[Problems to be solved by the invention]
As described above, even medical needles and medical blades having a silicone coating layer have a problem that the coating layer is worn or peeled off due to multiple use, and the sharpness deteriorates. For this reason, it is preferable if the sharpness can be recovered by a simple operation.
[0005]
An object of the present invention is to provide a protective material that is advantageous in use at the time of storage or at the distribution stage and that can easily recover the sharpness that has deteriorated due to multiple uses.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a protective material according to the present invention is a protective material that holds or protects medical needles or medical blades, is made of a porous body having elasticity, and has medical treatment in the holes. It is impregnated with lubricating silicone.
[0007]
In the above-described protective material, since the elastic porous body is impregnated with medical lubricating silicone (hereinafter simply referred to as “silicone”), medical needles (suture needle, injection needle, inspection needle, etc.) are typically represented below. A portion that needs to ensure the sharpness of medical blades (such as ophthalmic knives, surgical scalpels, etc., hereinafter referred to as “ophthalmic knives”), that is, the needle tip and In the case of the body part or ophthalmic knife, the cutting edge part is pierced by the protective material, so that a good sharpness can be maintained without being affected by external force or the like during storage or distribution.
[0008]
In addition, after the doctor has used multiple times, the needle tip and body of the suture needle and the cutting blade of the ophthalmic knife are pierced through the protective material, so that the silicone impregnated in the protective material is the needle tip and body and cutting blade. It can adhere to the surface and restore sharpness. Therefore, it is possible to recover the sharpness that has deteriorated with an easy operation.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the protective material will be described, and examples of a protective body that holds or protects a suture needle and a protective body that protects a cutting blade of an ophthalmic knife will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a protector that protects a suture needle, FIG. 2 is a diagram showing an example of a protector that protects a cutting blade of an ophthalmic knife, and FIG. 3 is a diagram showing an ophthalmic knife protected by the protector shown in FIG. It is a figure explaining a state.
[0010]
The protective material according to the present invention holds or protects medical needles typified by suture needles and medical blades typified by ophthalmic knives in the process of storing or distributing them. By piercing the needle tip portion and the body portion and the cutting blade of the ophthalmic knife, these suture needles and ophthalmic knife are protected, and silicone having lubricity is attached to the surface.
[0011]
The protective material is made of a porous material having elasticity, and is formed in a plate shape in which the holes are impregnated with silicone having lubricity. And the shape and size of the suture needle and ophthalmic knife and the piercing posture so that the target suture needle or ophthalmic knife can be satisfactorily held or protected and the needle tip, body part and cutting blade can be pierced. The protection bodies A and B are formed by molding into a shape corresponding to the above conditions (see FIGS. 1 and 2).
[0012]
As the elastic porous body constituting the protective material, it is possible to use a foam obtained by molding a synthetic resin such as polyethylene or polyurethane into a plate shape. The material has moderate elasticity and has a large number of holes. In particular, corresponding to preset conditions of the device to be protected, i.e., the suture needle or ophthalmic knife, or other conditions, such as storage period or distribution channel, physician usage, size of the suture needle or ophthalmic knife, It is possible to optimize the hardness and density by appropriately setting the expansion ratio according to the type of suture, the sterilization method, and the like.
[0013]
As the silicone impregnated in the foam, an emulsion generally used as a medical silicone is used. This silicone is non-toxic to living organisms, has no allergic reaction, and does not irritate tissues. Furthermore, it is not denatured by heating or chemical sterilization, and is scientifically inert.
[0014]
Therefore, for example, a plate material is formed by foaming a resin such as polyethylene at a preset magnification, and the plate material is stamped into a desired shape by pressing, and then the molded body is immersed in a silicone liquid and maintained for a predetermined time. By doing so, it is possible to form a protective material by impregnating with silicone and holding it by the pores of the foam. In the step of foaming a resin such as polyethylene, it is also possible to adopt a method of foaming after a silicone liquid is mixed in advance.
[0015]
In the protective material configured as described above, the silicone is maintained in the pores of the foam. For this reason, every time the needle tip and body of the suture needle that pierces the living tissue are pierced into the protective body, or every time the cutting blade of the ophthalmic knife that cuts the biological tissue is cut into the protective body, the hole is held in the protective material. The adhered silicone adheres to the needle tip portion and the body portion or the cutting blade.
[0016]
Therefore, by attaching the needle tip portion of the suture needle whose sharpness has deteriorated due to multiple use or the cutting blade of the ophthalmic knife to the protective material, silicone is adhered to these needle tip portion, body portion and cutting blade. It is possible to restore the sharpness of the suture needle and the ophthalmic knife.
[0017]
FIG. 1 shows a protective body A using the protective material configured as described above, and particularly, for a suture needle (not shown). In the figure, the protective body A is constituted by a protective material obtained by impregnating silicone into a polyethylene foam having a thickness of about 3 mm. In this embodiment, the two molded bodies 1 are formed in a symmetrical shape and joined so that they can be separated from each other during use.
[0018]
Each molded body 1 is formed with a window 1a and a groove 1b so that the suture needle and the suture thread connected to the suture needle can be reasonably held, or the shape of the needle tip of the suture needle can be confirmed. A recess 1c is formed in the vicinity of the window 1a.
[0019]
In the protector A configured as described above, the needle tip portion of the suture needle is pierced from the concave portion 1c toward the window 1a, and the suture thread connected to the suture needle is utilized in the groove 1b formed in the longitudinal direction. Can be held by wrapping.
[0020]
By storing and sterilizing the protective body A to which the suture needle is attached as described above in the outer bag, it is possible to prevent inconveniences such as adhesion and breakage of bacteria to the suture needle in the storage and distribution stages. In use, it is possible to remove the suture needle by unwinding the suture thread wound around the protector A and pulling out the needle tip.
[0021]
When the affected area is sutured multiple times and the sharpness deteriorates, the needle tip part and body part of the suture needle are pierced into the protector A several times, and the silicone impregnated in the protector A is attached to the needle tip part, It is possible to restore the sharpness by forming a new silicone layer at the needle tip.
[0022]
The shape of the protector A is not uniquely set. The shape and size of the needles to be protected (for example, the needle to be protected is a suture needle, an injection needle or an inspection needle, or a suture needle). In some cases, it is variously set according to whether the needle is a curved needle or a straight needle, the degree of bending, the thickness, and the like. Therefore, it is natural that the shape of the protector A shown in FIG. 1 is merely an example.
[0023]
FIG. 2 is a diagram for explaining a protector B that protects the ophthalmic knife constituted by the above-described protective material, and FIG. 3 is a diagram for explaining a state in which the ophthalmic knife 3 is protected by the protector B. This protective body B is made of a protective material obtained by impregnating silicone into a polyethylene foam having a thickness of about 6 mm, and is molded body 2 having the most reasonable shape to protect the target ophthalmic knife 3. have.
[0024]
A groove 2a is formed in the molded body 2, and the cutting blade 3a can be protected by inserting the cutting blade 3a of the ophthalmic knife 3 along the groove 2a. The ophthalmic knife 3 together with the molded body 2 that protects the cutting blade 3a is housed in an exterior bag and sterilized, thereby preventing inconveniences such as adhesion of bacteria at the storage and distribution stages.
[0025]
In addition, when the ophthalmic knife 3 is used a plurality of times during the ophthalmic surgery and the sharpness deteriorates, the cutting edge 3a is inserted along the groove 2a so that new silicone is attached to the cutting edge 3a to restore the sharpness. Is possible.
[0026]
Note that the shape of the protector B shown in FIG. 2 is merely an example, as in the case of the protector A described above. In particular, since there are a wide variety of blades to be protected, such as ophthalmic knives and surgical scalpels, it is natural that the blades need to be formed into shapes corresponding to the respective blades.
[0027]
【The invention's effect】
As described above in detail, since the protective material according to the present invention is made by impregnating silicone into a porous body having elasticity, it protects medical needles and medical blades from external force, and the needles and blades When the sharpness is deteriorated while using the silicone, the sharpness can be recovered by attaching silicone by piercing the needle tip portion, the body portion and the cutting blade.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a protector that protects a suture needle.
FIG. 2 is a diagram illustrating an example of a protector that protects a cutting blade of an ophthalmic knife.
FIG. 3 is a diagram for explaining a state in which an ophthalmic knife is protected by the protector shown in FIG. 2;
[Explanation of symbols]
A, B Protective body 1, 2 Molded body 1a Window 1b, 2a Groove 1c Recess 3 Ophthalmic knife 3a Cutting blade

Claims (1)

A protective material for holding or protecting medical needles or medical blades, comprising a porous body having elasticity, wherein the hole is impregnated with medical lubricating silicone.

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