JPH021281A - Sterilizable container - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sterile container for instruments used in surgeries to treat diseases, injuries, and the like.

(Prior Art) To treat diseases and injuries, surgical removal of the lesion is often performed. For surgery, there are sets of necessary instruments depending on the type of disease, method of surgery, type of injury, etc., and a set of instruments is selected from these sets.

Each set of thoroughly cleaned books is wrapped in cloth or stored in a stainless steel sieve and sterilized using a sterilizer, then stored in an instrument storage shelf and used as needed. A high-pressure steam sterilizer is usually used for sterilization.

(Problems to be Solved by the Invention) The conventional method of sterilizing by wrapping in cloth generally involves placing a scalpel and other instruments necessary for surgery in the center of a suitably sized cloth made of No. 140 muslin cotton cloth. , they are folded by hand from all sides and secured with adhesive tape, wrapped in cloth, sterilized in a sterilizer, and then stored in an instrument storage shelf, but this method (1) generates lint because it is made of cloth; do. (2) Since the cloth is folded and wrapped by hand, bacteria can easily adhere to the cloth. (3) Cloths are washed after use and used many times, so they are easily damaged and recontaminated during storage.

(4) Because it is hygroscopic, there are problems such as being easily recontaminated by bacteria on the outside of the packaging and in the air during storage.

Furthermore, in the case of stainless steel equipment, since it is made of metal, which is heavier than cloth, it lacks airtightness and is easily deformed, which causes problems such as allowing outside air to enter and being easily recontaminated.

(Means for Solving the Problems) The present invention is aimed at solving the above-mentioned problems, and is directed to a sterilization container characterized by being injection molded from a mixture of a heat-and-moisture resistant resin and an alloy. As a moisture and heat resistant resin,
Any material may be used as long as it has little hygroscopicity at high temperatures and can withstand high temperature treatment.

Polyether sulfone and polyether M ether ketone are preferred.

The heat-and-moisture resistant resin may be injection molded alone, but it is convenient to mix it with an alloy and mold it. Powder and fibrous alloys are suitable as alloys. Powder alloys include stainless steel, iron-nickel, and aluminum, and any of them can be used. The grain size of the powdered alloy is preferably as fine as possible. Preferably 5~
It is 150μ. The mixing ratio of the heat-and-moisture resistant resin and the powdery alloy is in the range of 20 to 80 parts of the alloy to the resin.

The ffl fibrous platform alloy may be stainless steel, iron-nickel, or aluminum, and any of them can be used, similar to powder alloys. Preferably stainless steel 5UEI
504B fiber. The thickness of the fibrous alloy is the diameter α0
05 to Q, 3+w, and 1 to 10 m in length are preferred from the standpoint of molding by mixing with a heat-and-moisture resistant resin. The amount used should preferably be in the range of 20 to 80 times the weight of the resin. Sterilization containers made of fibrous alloy and heat-and-moisture resistant resin also have excellent impact resistance.

A variety of shapes are adopted for the sterilization container to accommodate the size and size of instruments set depending on the type of surgery. - Numerically, it has a flat-bottomed rectangular shape and consists of a lid that can be tightly attached to the rectangular shape. The lid is also made of the same material.

Since the sterilization container of the present invention is composed of a heat-and-moisture resistant resin mixed with an alloy, it has the advantage that the cooling rate after high-temperature sterilization is fast and the sterilization can be performed efficiently. In addition, since the container is molded using an injection molding method, the surface of the container is highly smooth, and the lid seals well, thereby preventing recontamination of the device due to intrusion of outside air during storage.

(Example) Next, the present invention will be described in further detail with reference to Examples. In the examples, "parts" indicate parts by weight.

(Manufactured by IOI, UK, registered trademark) 70 parts, stainless steel
5tys 3i6b-tr (made by Daido Special Steel) 30
After pre-drying at 160℃ for 4 hours, the temperature was 350℃.
℃, an injection pressure of 1200 kg, Z-port 2, and a mold temperature of 120° C., the container was injection molded into a container with a length of 250 mm, a width of 250 mm, and a depth of 100 mm. Same composition.

A lid of a size that could be sealed tightly to this container under the same conditions was molded using the same injection molding method.

In this container, thoroughly cleaned surgical instruments are stored,
Place in a high-pressure steam sterilizer and use saturated steam at 135℃ for 10 minutes.
Sterilized for minutes. Next, it was dried at 100°C for 20 minutes. After cooling, it was taken out, stored in a completely sterilized storage shelf, and used for testing.

The test determined the sterilization effect using the sterility test method according to the Japanese Pharmacopoeia. For comparison, I also included a book that was sterilized under the same conditions on cotton muslin (a book that was run) and a book that was placed in a stainless steel can.

The sterility test method uses a designated indicator bacterium, Bacillus staepothermophilus (Bacillus 8tθa-vo).
thermophilus ') A'rOa 795
5 spore-containing biological indicator (US 3M
The determination was made using Atest (registered trademark) A1262, manufactured by Co., Ltd.

In the table, + indicates survival and - indicates death. 3 for muslin cloth
After this month, in the case of stainless steel cans, judgment tests after 4 months were discontinued.

Example 2 V engineering CTF as polyether ether kedone: RKX
40 parts of 450P (manufactured by British Kogyo Co., Ltd., trademark), NAP fiber (manufactured by Nippon Yakin Kogyo ■) as a metal fiber, diameter (L2
After pre-drying at 150°C for 5 hours, the mixture was heated to 400°C, injection pressure 120° to 9/♂, mold temperature 130°C, 300mm vertically and 300mm horizontally. , a container with a depth of 100 mm was injection molded. A sealable lid was also injection molded onto this container under the same composition (9 conditions).

This container was thoroughly washed, and the surgical instruments were placed in a high-pressure steam sterilizer and sterilized with saturated steam at 125° C. for 30 minutes. It was then dried at 80°C for 30 minutes. After cooling, it was stored in a completely sterilized storage shelf and subjected to the same tests as described in the examples.

The results were hardly different from those of Example 1.

(Effects of the Invention) Since the sterilization container of the present invention uses a mixture of a heat-and-moisture resistant resin and a powdery alloy or a fibrous alloy, it does not withstand sterilization treatment with high-temperature steam, and the use of the alloy It has a high cooling effect from high temperatures during sterilization, which shortens the sterilization cycle and is efficient.

In addition, since the mixture of heat-and-moisture resistant resin and alloy is molded using the injection molding method, the molded surface is extremely smooth and seals well with the lid, making it unlikely to be re-contaminated even during long-term storage. The occurrence of accidents caused by medical bacteria can be significantly reduced, and the effects of the invention are extremely large.

Claims (1)

[Scope of Claims] 1. A sterile container characterized by being injection molded from a mixture of a heat-and-moisture resistant resin and an alloy. 2. Claim 1, characterized in that the moist heat resistant resin is polyether sulfone or polyether ether ketone.
sterile container. 3. The sterilization container according to claim 1, wherein the alloy is in the form of powder or fiber.