JPH05150U - Gas sterilizer using a small cylinder - Google Patents
Gas sterilizer using a small cylinderInfo
- Publication number
- JPH05150U JPH05150U JP5495491U JP5495491U JPH05150U JP H05150 U JPH05150 U JP H05150U JP 5495491 U JP5495491 U JP 5495491U JP 5495491 U JP5495491 U JP 5495491U JP H05150 U JPH05150 U JP H05150U
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- Japan
- Prior art keywords
- chamber
- sterilization
- small cylinder
- sterilization container
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
(57)【要約】
【目的】簡単な構造で小型ボンベ3の封板を破れる様に
する。小型ボンベ3から噴出した滅菌ガスが滅菌容器1
外に漏洩するのを確実に防止する。
【構成】滅菌ガスを充填した小型ボンベ3を、蓋体2内
面の保持ポケット4内に昇降自在に収納する。蓋体2外
面の気密箱21内はダイヤフラム25により、第一、第
二の室26、27に分割する。蓋体2側の第一の室26
を、通孔30により滅菌容器1内に通じさせる。滅菌開
始時には、滅菌容器1内と第二の室27内とを真空にし
た後、第二の室27内に大気を導入する。この結果、ダ
イヤフラム25が変位し、ロッド28、揺動駒20を介
して小型ボンベ3を押し上げ、撃針8により封板を破
る。
(57) [Summary] [Purpose] Make the sealing plate of the small cylinder 3 rupturable with a simple structure. The sterilization gas ejected from the small cylinder 3 is the sterilization container 1.
Be sure to prevent leakage to the outside. [Structure] A small cylinder 3 filled with a sterilizing gas is housed in a holding pocket 4 on an inner surface of a lid 2 so as to be vertically movable. The inside of the airtight box 21 on the outer surface of the lid body 2 is divided by a diaphragm 25 into first and second chambers 26 and 27. First chamber 26 on the lid 2 side
Through the through hole 30 into the sterile container 1. At the start of sterilization, the sterilization container 1 and the second chamber 27 are evacuated, and then the atmosphere is introduced into the second chamber 27. As a result, the diaphragm 25 is displaced, the small cylinder 3 is pushed up via the rod 28 and the swing piece 20, and the firing plate 8 breaks the sealing plate.
Description
【0001】[0001]
この考案に係る小型ボンベを使用するガス滅菌器は、比較的小規模の病院や研 究所等に於いて、使用済の医療器具や実験器具等の滅菌処理をするのに使用する もので、本考案は、この様なガス滅菌器の使用時に、過って滅菌容器外に有毒な 滅菌ガスを漏出させる事がない様にする事を目的としている。 The gas sterilizer using the small cylinder according to the present invention is used for sterilizing used medical instruments and experimental instruments in relatively small hospitals and laboratories. An object of the present invention is to prevent toxic sterilizing gas from leaking out of the sterilization container by mistake when using such a gas sterilizer.
【0002】[0002]
使用済の医療器具や実験器具等は、再使用するのに先立ち、洗浄処理に加えて 滅菌処理を行なわなければならない場合が多い。 In many cases, used medical equipment and laboratory equipment must be sterilized in addition to the cleaning treatment before they can be reused.
【0003】 この様な滅菌処理は、通常は高温の水蒸気を使用する蒸気滅菌器により行なう が、耐熱性菌が付着している恐れのある器具や、耐熱性のない器具等の滅菌処理 は、蒸気滅菌に代えて、或は蒸気滅菌に加えて、ガス滅菌を行なう場合がある。Such a sterilization treatment is usually carried out by a steam sterilizer using high temperature steam, but sterilization treatment of an instrument that may have heat-resistant bacteria attached thereto or an instrument that does not have heat resistance is Gas sterilization may be performed instead of or in addition to steam sterilization.
【0004】 この様なガス滅菌は、被滅菌物を収納した滅菌容器内に、酸化エチレン等の滅 菌ガスを送り込む事で行なうが、従来この様なガス滅菌処理に使用していたガス 滅菌器は、比較的大型のものが殆どで、滅菌容器と滅菌ガスを充填した比較的大 型のボンベとが完全に別々になっているものであった。Such gas sterilization is carried out by sending a sterilizing gas such as ethylene oxide into a sterilization container containing an object to be sterilized. A gas sterilizer that has been conventionally used for such gas sterilization treatment. In most of the cases, the sterilization container and the relatively large cylinder filled with sterilization gas were completely separate.
【0005】 滅菌処理を行なう場合は、ボンベから適量ずつのガスを滅菌容器内に導入し、 被滅菌物を収納した滅菌容器内を滅菌ガスで充満させる様にしている。滅菌容器 内への滅菌ガスの導入、及び滅菌容器内に残留する滅菌ガスの排出は、滅菌器に 組み込まれ、滅菌容器の扉の状態を検出するセンサ等からの信号を入力する制御 器により開閉制御される電磁弁、及びこの制御器により起動、停止を制御される 真空ポンプにより行なわれる為、滅菌処理作業は、滅菌ガスの漏洩の恐れなく、 自動的に行なわれる。When performing sterilization, an appropriate amount of gas is introduced from a cylinder into a sterilization container so that the sterilization container containing the object to be sterilized is filled with the sterilization gas. Introduction of sterilization gas into the sterilization container and discharge of sterilization gas remaining in the sterilization container are built into the sterilizer and opened / closed by a controller that inputs a signal from a sensor that detects the state of the door of the sterilization container. Since the solenoid valve is controlled and the vacuum pump whose start and stop are controlled by this controller, the sterilization process is automatically performed without fear of leakage of sterilization gas.
【0006】[0006]
ところが、この様な比較的大型のガス滅菌器は、設置場所が嵩むだけでなく、 高価な為、小規模の病院や研究所等に於いて設置する事が難しく、より小型で安 価なガス滅菌器が望まれている。 However, such a relatively large-sized gas sterilizer not only requires a large installation space, but is also expensive, making it difficult to install in a small-scale hospital or research laboratory. A sterilizer is desired.
【0007】 この様な小型のガス滅菌器として従来から、例えば実開昭64−34034〜 5号公報、同64−46048号公報に開示されたものが知られている。これら 従来から知られたガス滅菌器は、1回の滅菌処理で使い切るだけの少量の滅菌ガ スを充填した小型ボンベを利用する事で構成される。As such a small-sized gas sterilizer, those disclosed, for example, in Japanese Utility Model Laid-Open Nos. 64-34034-5 and 64-46048 are conventionally known. These conventionally known gas sterilizers are configured by using a small cylinder filled with a small amount of sterilization gas that is used up in one sterilization process.
【0008】 ところが、上記実開昭64−34034〜5号公報に記載された小型ボンベを 使用するガス滅菌器は、滅菌作業の開始に当たって小型ボンベの封板を破る為に 、専用のモータ及びこのモータにより回転駆動されるカムを設けている為、構造 が複雑で製作費が嵩む事が避けられない。However, the gas sterilizer using the small cylinder described in Japanese Utility Model Laid-Open No. 64-34034-5 has a dedicated motor and a dedicated motor for breaking the sealing plate of the small cylinder at the start of sterilization work. Since the cam is driven to rotate by the motor, it is inevitable that the structure is complicated and the manufacturing cost is high.
【0009】 一方、実開昭64−46048号公報に記載された小型ボンベを使用するガス 滅菌器は、滅菌容器内の負圧を利用して上記封板を破る様に構成している為、上 述の様な問題を生じないが、別に次の様な問題が生じる。On the other hand, the gas sterilizer using a small cylinder described in Japanese Utility Model Laid-Open No. 64-46048 is configured to break the sealing plate by using the negative pressure in the sterilization container. Although it does not cause the problems described above, it also causes the following problems.
【0010】 即ち、上記実開昭64−46048号公報に記載された小型ボンベを使用する ガス滅菌器の場合、滅菌ガスを充填した小型ボンベを、上記滅菌容器の外側から セットする為、セット不良やパッキングの損傷等に起因して、この小型ボンベか ら噴出した滅菌ガスが室内に漏洩する恐れがある。That is, in the case of the gas sterilizer using the small cylinder described in Japanese Utility Model Laid-Open No. 64-46048, the small cylinder filled with the sterilizing gas is set from the outside of the sterilization container, so that the setting is defective. The sterilizing gas spouted from this small cylinder may leak into the room due to damage to the packaging or damage to the packing.
【0011】 本考案は、上述の様な不都合を何れも解消するものである。The present invention solves all of the above-mentioned inconveniences.
【0012】[0012]
本考案の小型ボンベを使用するガス滅菌器は、被滅菌物を収納自在で、前面に 開口を有する滅菌容器と、この滅菌容器の開口を気密に閉塞自在な蓋体と、この 蓋体の内面に設けられ、滅菌ガスを充填した小型ボンベを収納自在な保持ポケッ トと、この保持ポケットに収納された上記小型ボンベの封板に鋭利な先端を対向 させた撃針と、この撃針と上記小型ボンベとを互いに近付ける押し付け機構と、 上記蓋体に設けられた気密箱と、この気密箱の内部を二分割する状態で設けられ たダイヤフラムと、このダイヤフラムにより上記気密箱内を仕切る事で構成され た第一の室及び第二の室と、第一の室側へのダイヤフラムの変位に基づいて上記 押し付け機構を動かし、上記撃針により上記封板を破らせる動力伝達機構と、上 記蓋体に設けられ、上記滅菌容器内と第一の室とを連通させる通孔と、上記滅菌 容器内にその一端を通じさせた第一の排気管と、上記第二の室内にその一端を通 じさせた第二の排気管と、この第二の排気管と上記第一の排気管との他端を、そ の吸気口に通じさせた真空ポンプと、上記第二の室内のみを大気に開放させる大 気開放弁と、上記滅菌容器内の圧力を検出する圧力センサと、この圧力センサか らの信号に基づいて、上記大気開放弁の開閉と上記真空ポンプの運転状態とを制 御する制御器とから構成される。 A gas sterilizer using a small cylinder of the present invention is a sterilization container that can store an object to be sterilized and has an opening at the front, a lid that can hermetically close the opening of the sterilization container, and an inner surface of the lid. , A holding pocket that can store a small cylinder filled with sterilizing gas, a firing needle with a sharp tip facing the sealing plate of the small cylinder stored in this holding pocket, the firing needle and the small cylinder. And a pressing mechanism that brings the two close to each other, an airtight box provided on the lid, a diaphragm provided in a state where the inside of the airtight box is divided into two, and the inside of the airtight box is partitioned by this diaphragm. Provided on the first chamber and the second chamber, a power transmission mechanism that moves the pressing mechanism based on the displacement of the diaphragm toward the first chamber side, and causes the firing plate to break the sealing plate, and the lid body. From A through hole that communicates the inside of the sterilization container with the first chamber, a first exhaust pipe through one end of the sterilization container, and a second exhaust pipe through the one end of the second chamber. Exhaust pipe, a vacuum pump having the other end of the second exhaust pipe and the first exhaust pipe communicated with the intake port, and an atmospheric release that opens only the second chamber to the atmosphere. A valve, a pressure sensor that detects the pressure in the sterilization container, and a controller that controls the opening and closing of the atmosphere opening valve and the operating state of the vacuum pump based on the signal from the pressure sensor. To be done.
【0013】 そして上記制御器は、滅菌作業の開始に当たり、上記大気開放弁を閉じた状態 で真空ポンプを運転し、上記滅菌容器内の圧力が所定値以下に低下した状態で上 記大気開放弁を開放する機能を有する。At the start of the sterilization work, the controller operates the vacuum pump with the atmosphere release valve closed, and when the pressure inside the sterilization container drops below a predetermined value, the above atmosphere release valve. Has the function of opening.
【0014】[0014]
上述の様に構成される本考案の小型ボンベを使用するガス滅菌器の作用は次の 通りである。 The operation of the gas sterilizer using the small cylinder of the present invention constructed as described above is as follows.
【0015】 滅菌作業の開始に当たり、制御器が大気開放弁を閉じた状態で真空ポンプを運 転すると、滅菌容器内の空気が排出されると同時に第二の室内の空気が排出され る。この際、容積の大きな滅菌容器内の圧力よりも、容積の小さな第二の室内の 圧力が早く低下する為、ダイヤフラムが第一の室に向けて変位する事はない。従 って、動力伝達機構が押し付け機構を動かす事はなく、小型ボンベの封板が破ら れる事もない。At the start of the sterilization work, when the controller operates the vacuum pump with the atmosphere release valve closed, the air in the sterilization container is discharged and the air in the second chamber is discharged at the same time. At this time, the pressure in the second chamber having a small volume decreases earlier than the pressure in the sterilization container having a large volume, so that the diaphragm is not displaced toward the first chamber. Therefore, the power transmission mechanism does not move the pressing mechanism and the sealing plate of the small cylinder is not broken.
【0016】 真空ポンプの運転を継続する事により、滅菌容器内の圧力が十分に低下すると 、圧力センサからの信号に基づいて制御器が、大気開放弁を開放する。この結果 、上記第二の室内が大気圧になる。When the pressure in the sterilization container is sufficiently reduced by continuing the operation of the vacuum pump, the controller opens the atmosphere opening valve based on the signal from the pressure sensor. As a result, the inside of the second chamber becomes atmospheric pressure.
【0017】 一方、通孔を介して滅菌容器内と連通した第一の室内は真空となっている為、 上記大気開放弁の開放に伴なって上記ダイヤフラムが、第一の室側に向けて変位 する。On the other hand, since the first chamber communicating with the inside of the sterilization container through the through hole is in a vacuum, the diaphragm moves toward the first chamber side as the atmosphere opening valve opens. Displace.
【0018】 この結果、動力伝達機構を介して押し付け機構が働き、撃針と上記小型ボンベ とが互いに近付き、上記撃針によってこの小型ボンベの封板が破られる。小型ボ ンベは、蓋体内面の保持ポケットに収納されている為、封板が破られるのに伴な って小型ボンベ内から噴出した滅菌ガスは、そのまま滅菌容器内に充満する。従 って、滅菌ガスが滅菌容器外に漏れ出す恐れはない。As a result, the pressing mechanism works via the power transmission mechanism, the firing pin and the small cylinder come close to each other, and the sealing plate of the small cylinder is broken by the firing pin. Since the small bomb is stored in the holding pocket inside the lid, the sterilization gas ejected from the inside of the small bomb when the sealing plate is broken fills the sterilization container as it is. Therefore, there is no risk of sterilizing gas leaking out of the sterilization container.
【0019】[0019]
図1〜5は本考案の実施例を示している。図1〜2に示す様に、横有底円筒状 に形成され、被滅菌物を収納自在な滅菌容器1の前面開口は、蓋体2により気密 に閉塞自在としている。この蓋体2の内面には、図2、3、5に示す様に、滅菌 ガスを充填した小型ボンベ3を収納自在な保持ポケット4を設けている。図示の 実施例に於いてこの保持ポケット4は、互いに間隔をあけて上記蓋体2の内面に 固定された1対の支持板5、5と、金属板をL字形に折り曲げて成り、上記支持 板5、5の間に存在する空間の側方と下方とを覆った覆板6とから構成され、上 方のみ開放する収納空間7を有する。上記小型ボンベ3はこの収納空間7内に、 上方から挿入自在である。 1 to 5 show an embodiment of the present invention. As shown in FIGS. 1 and 2, the front opening of the sterilization container 1 which is formed in a cylindrical shape with a horizontal bottom and is capable of accommodating an object to be sterilized can be airtightly closed by a lid 2. As shown in FIGS. 2, 3 and 5, a holding pocket 4 is provided on the inner surface of the lid body 2 for holding a small cylinder 3 filled with sterilizing gas. In the illustrated embodiment, the holding pocket 4 is formed by bending a pair of support plates 5 and 5 fixed to the inner surface of the lid body 2 with a space therebetween and an L-shaped metal plate. There is a storage space 7 which is composed of a cover plate 6 which covers the side and the lower side of the space existing between the plates 5 and 5, and which is open only at the upper side. The small cylinder 3 can be inserted into the storage space 7 from above.
【0020】 上記収納空間7の上方には、図2に示す様に、撃針8を含む開封機構9が設け られている。この開封機構9は、上記蓋体2の内面上部に揺動自在に支持された ケース10と撃針8と保護カバー11とを有する。上記収納空間7の上方に進退 自在なケース10は、蓋体2の内面上部に固定された支持ブラケット12に、鉛 直軸13により枢支されている。As shown in FIG. 2, an opening mechanism 9 including a firing pin 8 is provided above the storage space 7. The unsealing mechanism 9 has a case 10, a striker needle 8 and a protective cover 11, which are swingably supported on the upper part of the inner surface of the lid 2. The case 10 that can move back and forth above the storage space 7 is pivotally supported by a vertical shaft 13 on a support bracket 12 fixed to the upper inner surface of the lid 2.
【0021】 竪型筒状に形成されたケース10の上端開口部を塞いだ、蓋体14の中心部に は撃針8を、鋭利な先端を下方に向けた状態で固定している。上記保護カバー1 1の中心部には、この撃針8の先端部を挿通自在な貫通孔15を形成している。 又、保護カバー11の上端部外周縁に形成した鍔部16と、上記ケース10の内 周面下端部に形成した段部17との係合により、上記保護カバー11の下降量を 制限している。更に、上記蓋体14の下面と鍔部16の上面との間には圧縮ばね 18を設けて、上記保護カバー11に、下方に向かう弾力を付与している。A firing pin 8 is fixed to the center of the lid body 14 with the upper end opening of the case 10 formed in a vertical tube shape closed, with the sharp tip facing downward. A through hole 15 is formed in the center of the protective cover 11 so that the tip of the firing pin 8 can be inserted therethrough. Further, the lowering amount of the protective cover 11 is limited by the engagement of the flange portion 16 formed on the outer peripheral edge of the upper end portion of the protective cover 11 and the step portion 17 formed on the lower end portion of the inner peripheral surface of the case 10. There is. Further, a compression spring 18 is provided between the lower surface of the lid 14 and the upper surface of the collar portion 16 to give the protective cover 11 a downward elastic force.
【0022】 上記撃針8の先端は、圧縮ばね18の弾力により上記保護カバー11が下降し た際には、上記貫通孔15内に隠れ、上記保護カバー11が圧縮ばね18の弾力 に抗して上昇すると、この保護カバー11の下面から突出する。The tip of the firing pin 8 is hidden in the through hole 15 when the protective cover 11 is lowered by the elastic force of the compression spring 18, and the protective cover 11 resists the elastic force of the compression spring 18. When raised, it projects from the lower surface of the protective cover 11.
【0023】 又、やはり図2に示す様に、前記1対の支持板5、5の下部内面同士の間に掛 け渡された横軸19には、揺動駒20の上端隅部を枢支している。そして、この 揺動駒20の上面を、前記保持ポケット4内に収納された小型ボンベ3の下面に 対向させる事により、この小型ボンベ3を押し上げて、この小型ボンベ3と上記 撃針8とを互いに近付ける、押し付け機構を構成している。Also, as shown in FIG. 2, the upper end corner portion of the swinging piece 20 is pivoted on the horizontal shaft 19 which is hung between the lower inner surfaces of the pair of support plates 5 and 5. It supports. Then, the upper surface of the swing piece 20 is opposed to the lower surface of the small cylinder 3 housed in the holding pocket 4, thereby pushing up the small cylinder 3 so that the small cylinder 3 and the striking needle 8 are mutually connected. The pressing mechanism is configured to bring them closer.
【0024】 一方、前記蓋体2の前面下部には、図1、2、3、5に示す様に、気密箱21 が設けられている。この気密箱21は、シャーレの如く有底短円筒状の蓋部22 と短円筒状の周壁部23とを、周壁部23を蓋体2側にして組み合わせ、螺子2 4、24によりこれら両部22、23を結合すると共に、蓋体2の前面に固定し ている。On the other hand, in the lower part of the front surface of the lid body 2, as shown in FIGS. 1, 2, 3 and 5, an airtight box 21 is provided. In this airtight box 21, a lid 22 having a short cylindrical shape with a bottom and a peripheral wall portion 23 having a short cylinder like a petri dish are combined with the peripheral wall portion 23 being the lid body 2 side, and both parts are provided by screws 24 and 24. 22 and 23 are coupled and fixed to the front surface of the lid body 2.
【0025】 この様にして組み合わされた蓋部22と周壁部23との間には、ダイヤフラム 25の周縁部を挟持している。この結果上記気密箱21の内側は、図1、2に示 す様に、蓋体2側の第一の室26と、蓋体2から遠い側の第二の室27とに二分 割される。The peripheral portion of the diaphragm 25 is sandwiched between the lid portion 22 and the peripheral wall portion 23 assembled in this manner. As a result, the inside of the airtight box 21 is divided into a first chamber 26 on the lid 2 side and a second chamber 27 on the side far from the lid 2 as shown in FIGS. ..
【0026】 図2に示す様に、上記ダイヤフラム25の中心部を気密に貫通すると共に、こ の中心部に固定されたロッド28の先端部(図の右端部)は、上記蓋体2に形成 した円孔29内に挿入されて、この蓋体2の内面から突出自在としている。上記 円孔29は、前記揺動駒20の下部外側面に対向する部分に形成されており、上 記ロッド28は、上記ダイヤフラム25が第一の室26側に変位するのに伴なっ て上記揺動駒20を図2の反時計方向に揺動させ、前記小型ボンベ3を上昇させ る役目を有する。即ち、このロッド28は、上記ダイヤフラム25の変位に基づ いて押し付け機構を動かす動力伝達機構を構成する。As shown in FIG. 2, the tip portion (right end portion in the figure) of the rod 28, which penetrates the center portion of the diaphragm 25 in an airtight manner and is fixed to the center portion, is formed on the lid body 2. The lid 2 is inserted into the circular hole 29 and can be projected from the inner surface of the lid 2. The circular hole 29 is formed in a portion facing the lower outer surface of the rocking piece 20, and the rod 28 described above is moved along with the displacement of the diaphragm 25 toward the first chamber 26. The swinging piece 20 swings counterclockwise in FIG. 2 to raise the small cylinder 3. That is, the rod 28 constitutes a power transmission mechanism that moves the pressing mechanism based on the displacement of the diaphragm 25.
【0027】 又、前記蓋体2の一部で気密箱21に整合する部分には通孔30を設けて、前 記滅菌容器1内と第一の室26とを連通させ、この第一の室26内の圧力が滅菌 容器1内の圧力と等しくなる様にしている。Further, a through hole 30 is provided in a part of the lid body 2 that is aligned with the airtight box 21, and the inside of the sterilization container 1 and the first chamber 26 are communicated with each other. The pressure in the chamber 26 is made equal to the pressure in the sterilization container 1.
【0028】 更に、図1に示す様に、上記滅菌容器1内にその一端を通じさせた第一の排気 管31の他端を、真空ポンプ32の吸気口に通じさせている。この第一の排気管 31の途中には、それぞれ滅菌容器1から真空ポンプ32に向けてのみ気体を流 す逆止弁33、33を2個、互いに直列に接続している。Further, as shown in FIG. 1, the other end of the first exhaust pipe 31 which is passed through one end in the sterilization container 1 is communicated with the intake port of the vacuum pump 32. In the middle of the first exhaust pipe 31, two check valves 33, 33 for flowing gas only from the sterilization container 1 toward the vacuum pump 32 are connected in series with each other.
【0029】 一方、前記第二の室27内にその一端を通じさせた第二の排気管34の他端を 、上記第一の排気管31の途中で、上記2個の逆止弁33、33の間部分に接続 している。又、この第二の排気管34の途中にその一端を接続し、他端を大気に 開放した分岐管35の途中に、電磁開閉式の大気開放弁36を設け、前記第二の 室27内を大気に開放自在としている。On the other hand, the other end of the second exhaust pipe 34, which is passed through one end into the second chamber 27, is connected to the two check valves 33, 33 in the middle of the first exhaust pipe 31. It is connected to the part between. Further, an electromagnetic opening-and-closing type atmosphere opening valve 36 is provided in the middle of the branch pipe 35 having one end connected to the middle of the second exhaust pipe 34 and the other end open to the atmosphere. Is open to the atmosphere.
【0030】 又、前記滅菌容器1内に一端を通じさせ、他端を大気に開放した吸気管37の 途中に、滅菌容器1の側から順に、電磁開閉式の吸気弁38とエアフィルタ39 とを互いに直列に設け、上記滅菌容器1内に清浄空気を吸入自在としている。そ して、上記吸気管37の途中で、吸気弁38よりも滅菌容器1に寄った部分にそ の一端を接続した導圧管40の他端に、圧力計41と圧力スイッチ42とを設け ている。In addition, an electromagnetic open / close type intake valve 38 and an air filter 39 are provided in order from the side of the sterilization container 1 in the middle of the intake pipe 37 in which one end is passed through the sterilization container 1 and the other end is open to the atmosphere. They are provided in series with each other, and clean air can be drawn into the sterilization container 1 freely. A pressure gauge 41 and a pressure switch 42 are provided at the other end of a pressure guiding pipe 40, one end of which is connected to a portion closer to the sterilization container 1 than the intake valve 38 in the middle of the intake pipe 37. There is.
【0031】 上記滅菌容器1内の圧力を検出する圧力センサの一種である、圧力スイッチ4 2の検出信号は、前記大気開放弁36の開閉と、前記真空ポンプ32の運転状態 と、上記吸気弁38の開閉とを制御する制御器43に送り込まれる。The detection signal of the pressure switch 42, which is a kind of pressure sensor for detecting the pressure in the sterilization container 1, is based on the opening / closing of the atmosphere opening valve 36, the operating state of the vacuum pump 32, and the intake valve. It is sent to a controller 43 that controls the opening and closing of 38.
【0032】 そして上記制御器43は、滅菌作業の開始に当たり、上記大気開放弁36及び 吸気弁38を閉じた状態で真空ポンプ32を運転し、上記滅菌容器1内の圧力が 所定値以下に低下した状態で、上記吸気弁38を閉じた状態のまま、大気開放弁 36を開放する機能を有する。At the start of the sterilization operation, the controller 43 operates the vacuum pump 32 with the atmosphere opening valve 36 and the intake valve 38 closed, and the pressure inside the sterilization container 1 drops below a predetermined value. In this state, the air release valve 36 is opened with the intake valve 38 kept closed.
【0033】 上述の様に構成される本考案の小型ボンベを使用するガス滅菌器により、滅菌 作業を行なう場合、滅菌容器1内に被滅菌物を収納してから、蓋体2を閉じた後 、図示しない滅菌開始スイッチをONすると、制御器43が大気開放弁36及び 吸気弁38を閉じた状態で真空ポンプ32を運転する。この結果、第一の排気管 31を通じて滅菌容器1内の空気が排出されると同時に、第二の排気管34を通 じて第二の室27内の空気が排出される。When performing a sterilization operation with the gas sterilizer using the small cylinder of the present invention configured as described above, after the object to be sterilized is stored in the sterilization container 1, the lid 2 is closed. When a sterilization start switch (not shown) is turned on, the controller 43 operates the vacuum pump 32 with the atmosphere release valve 36 and the intake valve 38 closed. As a result, the air in the sterilization container 1 is discharged through the first exhaust pipe 31, and at the same time, the air in the second chamber 27 is discharged through the second exhaust pipe 34.
【0034】 この様に各部1、27内の空気が排出される際、容積の大きな滅菌容器1内の 圧力よりも、容積の小さな第二の室27内の圧力が早く低下する為、気密箱21 内に設けたダイヤフラム25が、第一の室26に向けて変位する事はない。従っ て、このダイヤフラム25の中心部に固定されたロッド28が揺動駒20を動か す事はなく、小型ボンベ3が上昇する事もない為、この小型ボンベ3の封板が破 られる事もない。As described above, when the air in each of the parts 1 and 27 is discharged, the pressure in the second chamber 27 having a small volume decreases earlier than the pressure in the sterilization container 1 having a large volume, so that the airtight box is closed. The diaphragm 25 provided inside 21 is not displaced toward the first chamber 26. Therefore, the rod 28 fixed to the center of the diaphragm 25 does not move the swing piece 20 and the small cylinder 3 does not rise, so that the sealing plate of the small cylinder 3 may be broken. Absent.
【0035】 真空ポンプ32の運転を継続する事により、滅菌容器1内の圧力が十分に低下 すると、圧力スイッチ42からの信号に基づいて制御器43が、真空ポンプ32 の運転を停止すると共に、吸気弁38を閉じた状態のまま、大気開放弁36のみ を開放する。この結果、上記第二の室27内が大気圧になる。When the pressure in the sterilization container 1 is sufficiently reduced by continuing the operation of the vacuum pump 32, the controller 43 stops the operation of the vacuum pump 32 based on the signal from the pressure switch 42, and With the intake valve 38 kept closed, only the atmosphere release valve 36 is opened. As a result, the inside of the second chamber 27 becomes atmospheric pressure.
【0036】 一方、ダイヤフラム25により上記第二の室27と隔てられ、通孔30を介し て滅菌容器1内と連通した第一の室26内は真空となっている為、上記大気開放 弁36の開放に伴なって上記第二の室27内の圧力が上昇すると、上記ダイヤフ ラム25が第一の室26側に向けて変位する。On the other hand, since the inside of the first chamber 26, which is separated from the second chamber 27 by the diaphragm 25 and communicates with the inside of the sterilization container 1 through the through hole 30, is a vacuum, the atmosphere opening valve 36 is provided. When the pressure in the second chamber 27 rises as the pressure is released, the diaphragm 25 is displaced toward the first chamber 26 side.
【0037】 この結果、ダイヤフラム25の中心部に固定したロッド28の先端部が、円孔 29を通じて蓋体2の内面から突出し、前記揺動駒20を、横軸19を中心とし て図2の反時計方向に、同図に実線で示す状態から鎖線で示す状態に迄揺動させ る。As a result, the tip of the rod 28 fixed to the center of the diaphragm 25 projects from the inner surface of the lid 2 through the circular hole 29, and the swinging piece 20 with the horizontal axis 19 as the center is shown in FIG. Swing counterclockwise from the state shown by the solid line in the figure to the state shown by the chain line.
【0038】 この様な横軸19を中心とする揺動駒20の揺動の結果、前記収納空間7に封 板を上にして収納された小型ボンベ3が、図2に実線で示す状態から鎖線で示す 状態に迄上昇する。そして、この小型ボンベ3の封板部分が、前記開封機構9の 保護カバー11を、圧縮ばね18の弾力に抗して押し上げる。保護カバー11が 押し上げられるのに伴なって撃針8の先端が、上記保護カバー11の下面から突 出し、上記小型ボンベ3の封板を破る。As a result of the swinging of the swinging piece 20 about the horizontal axis 19 as described above, the small cylinder 3 housed in the housing space 7 with the sealing plate facing upward is changed from the state shown by the solid line in FIG. It rises to the state shown by the chain line. Then, the sealing plate portion of the small cylinder 3 pushes up the protective cover 11 of the unsealing mechanism 9 against the elasticity of the compression spring 18. As the protective cover 11 is pushed up, the tip of the firing pin 8 protrudes from the lower surface of the protective cover 11 and breaks the sealing plate of the small cylinder 3.
【0039】 この結果、小型ボンベ3内に充填された滅菌ガスが噴出する。小型ボンベ3は 、蓋体2内面の保持ポケット4に収納されている為、封板が破られるのに伴なっ て小型ボンベ3内から噴出した滅菌ガスは、そのまま滅菌容器1内に充満する。 従って、滅菌ガスが滅菌容器1外に漏れ出す恐れはない。As a result, the sterilizing gas filled in the small cylinder 3 is ejected. Since the small cylinder 3 is housed in the holding pocket 4 on the inner surface of the lid body 2, the sterilization gas ejected from the small cylinder 3 as the sealing plate is broken fills the sterilization container 1 as it is. Therefore, there is no possibility that the sterilization gas leaks out of the sterilization container 1.
【0040】 所定時間の滅菌行程を終了すると前記制御器43は、それ迄閉じていた吸気弁 38を開き、大気開放弁36を閉じた状態で、真空ポンプ32を運転する。この 結果、滅菌容器1内の滅菌ガスが排出されると同時に、この滅菌容器1内に清浄 空気が吸入される。被滅菌物の取り出しは、滅菌容器1内の滅菌ガスを完全に排 出した後、蓋体2を開放する事で行なう。When the sterilization process for a predetermined time is completed, the controller 43 operates the vacuum pump 32 with the intake valve 38, which has been closed until then, opened and the atmosphere release valve 36 closed. As a result, the sterilization gas in the sterilization container 1 is discharged, and at the same time, the clean air is sucked into the sterilization container 1. The object to be sterilized is taken out by completely discharging the sterilization gas in the sterilization container 1 and then opening the lid 2.
【0041】 尚、保持ポケット4内に小型ボンベ3を出し入れ自在とする為、上述の実施例 に於いては、開封機構9のケース10を鉛直軸13を中心として側方に回動自在 としているが、これとは別に、図6〜7に示す様に、上記ケース10を蓋体2の 内面に固定し、代りに、保持ポケット4を構成する覆板6の下端部を、横軸44 、44により枢支する事も出来る。小型ボンベ3を出し入れする際には上記覆板 6を、図6で時計方向に揺動させる事で上記保持ポケット4を開放する。In order to allow the small cylinder 3 to be inserted into and taken out from the holding pocket 4, the case 10 of the opening mechanism 9 is rotatable laterally about the vertical shaft 13 in the above-described embodiment. However, separately from this, as shown in FIGS. 6 to 7, the case 10 is fixed to the inner surface of the lid body 2, and instead, the lower end portion of the cover plate 6 constituting the holding pocket 4 is connected to the horizontal axis 44, It can also be pivoted by 44. When the small cylinder 3 is taken in and out, the cover plate 6 is swung clockwise in FIG. 6 to open the holding pocket 4.
【0042】[0042]
本考案の小型ボンベを使用するガス滅菌器は、以上に述べた通り構成され作用 する為、蓋体の内面側に装着した小型ボンベの封板を、滅菌容器内の真空圧を利 用して破る構成を有する為、小型且つ安価に製作でき、しかも滅菌ガスが滅菌容 器外に漏洩するのを確実に防止して、滅菌器の運転を安全に行なえる。 Since the gas sterilizer using the small cylinder of the present invention is constructed and operates as described above, the sealing plate of the small cylinder mounted on the inner surface side of the lid body is used by utilizing the vacuum pressure in the sterilization container. Since it has a breakable structure, it can be manufactured in a small size and at a low cost, and the sterilizing gas can be reliably prevented from leaking out of the sterilization container, and the sterilizer can be operated safely.
【図1】本考案の実施例を示す回路図。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
【図2】図1のA部拡大断面図。FIG. 2 is an enlarged cross-sectional view of part A in FIG.
【図3】図2の右方から見た図。FIG. 3 is a diagram viewed from the right side of FIG.
【図4】図3の上方から見た図。FIG. 4 is a view seen from above in FIG.
【図5】図3の下方から見た図。FIG. 5 is a view seen from below in FIG.
【図6】本考案の別の実施例を示す、図2と同様の断面
図。FIG. 6 is a sectional view similar to FIG. 2, showing another embodiment of the present invention.
【図7】図6の右方から見た図。FIG. 7 is a diagram viewed from the right side of FIG.
1 滅菌容器 2 蓋体 3 小型ボンベ 4 保持ポケット 5 支持板 6 覆板 7 収納空間 8 撃針 9 開封機構 10 ケース 11 保護カバー 12 支持ブラケット 13 鉛直軸 14 蓋体 15 貫通孔 16 鍔部 17 段部 18 圧縮ばね 19 横軸 20 揺動駒 21 気密箱 22 蓋部 23 周壁部 24 螺子 25 ダイヤフラム 26 第一の室 27 第二の室 28 ロッド 29 円孔 30 通孔 31 第一の排気管 32 真空ポンプ 33 逆止弁 34 第二の排気管 35 分岐管 36 大気開放弁 37 吸気管 38 吸気弁 39 エアフィルタ 40 導圧管 41 圧力計 42 圧力スイッチ 43 制御器 44 横軸 DESCRIPTION OF SYMBOLS 1 Sterilization container 2 Lid body 3 Small cylinder 4 Holding pocket 5 Support plate 6 Cover plate 7 Storage space 8 Strike needle 9 Opening mechanism 10 Case 11 Protective cover 12 Support bracket 13 Vertical shaft 14 Lid body 15 Through hole 16 Collar section 17 Step section 18 Compression spring 19 Horizontal axis 20 Swing piece 21 Airtight box 22 Lid portion 23 Peripheral wall portion 24 Screw 25 Diaphragm 26 First chamber 27 Second chamber 28 Rod 29 Circular hole 30 Through hole 31 First exhaust pipe 32 Vacuum pump 33 Check valve 34 Second exhaust pipe 35 Branch pipe 36 Atmosphere release valve 37 Intake pipe 38 Intake valve 39 Air filter 40 Pressure guide pipe 41 Pressure gauge 42 Pressure switch 43 Controller 44 Horizontal axis
Claims (1)
する滅菌容器と、この滅菌容器の開口を気密に閉塞自在
な蓋体と、この蓋体の内面に設けられ、滅菌ガスを充填
した小型ボンベを収納自在な保持ポケットと、この保持
ポケットに収納された上記小型ボンベの封板に鋭利な先
端を対向させた撃針と、この撃針と上記小型ボンベとを
互いに近付ける押し付け機構と、上記蓋体に設けられた
気密箱と、この気密箱の内部を二分割する状態で設けら
れたダイヤフラムと、このダイヤフラムにより上記気密
箱内を仕切る事で構成された第一の室及び第二の室と、
第一の室側へのダイヤフラムの変位に基づいて上記押し
付け機構を動かし、上記撃針により上記封板を破らせる
動力伝達機構と、上記蓋体に設けられ、上記滅菌容器内
と第一の室とを連通させる通孔と、上記滅菌容器内にそ
の一端を通じさせた第一の排気管と、上記第二の室内に
その一端を通じさせた第二の排気管と、この第二の排気
管と上記第一の排気管との他端を、その吸気口に通じさ
せた真空ポンプと、上記第二の室内のみを大気に開放さ
せる大気開放弁と、上記滅菌容器内の圧力を検出する圧
力センサと、この圧力センサからの信号に基づいて、上
記大気開放弁の開閉と上記真空ポンプの運転状態とを制
御する制御器とから成り、この制御器は滅菌作業の開始
に当たり、上記大気開放弁を閉じた状態で真空ポンプを
運転し、上記滅菌容器内の圧力が所定値以下に低下した
状態で上記大気開放弁を開放する機能を有する、小型ボ
ンベを使用するガス滅菌器。[Claims for utility model registration] 1. A sterilization container capable of accommodating an object to be sterilized and having an opening at the front, a lid body which can hermetically close the opening of the sterilization container, and an inner surface of the lid body. And a holding pocket capable of storing a small cylinder filled with sterilizing gas, a firing pin having a sharp tip facing the sealing plate of the small cylinder stored in the holding pocket, the firing pin and the small cylinder. A pressing mechanism that brings them closer to each other, an airtight box provided in the lid, a diaphragm provided in a state where the inside of the airtight box is divided into two parts, and a partition formed in the airtight box by the diaphragm. One chamber and a second chamber,
The pressing mechanism is moved based on the displacement of the diaphragm toward the first chamber side, the power transmission mechanism that breaks the sealing plate by the firing pin, and the lid body, which is provided in the sterilization container and the first chamber. , A first exhaust pipe having one end thereof passed through the sterilization container, a second exhaust pipe having one end thereof passed through the second chamber, the second exhaust pipe and the above A vacuum pump having the other end of the first exhaust pipe communicated with the intake port thereof, an atmosphere release valve for opening only the second chamber to the atmosphere, and a pressure sensor for detecting the pressure in the sterilization container. , A controller for controlling the opening and closing of the atmosphere opening valve and the operating state of the vacuum pump based on the signal from the pressure sensor, and the controller closes the atmosphere opening valve at the start of sterilization work. Sterilization by operating the vacuum pump The pressure in the vessel has the function of opening the atmosphere release valve in a state in which falls below a predetermined value, the gas sterilizer that uses a small bomb.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5495491U JP2557321Y2 (en) | 1991-06-20 | 1991-06-20 | Gas sterilizer using small cylinder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5495491U JP2557321Y2 (en) | 1991-06-20 | 1991-06-20 | Gas sterilizer using small cylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05150U true JPH05150U (en) | 1993-01-08 |
JP2557321Y2 JP2557321Y2 (en) | 1997-12-10 |
Family
ID=12985067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5495491U Expired - Fee Related JP2557321Y2 (en) | 1991-06-20 | 1991-06-20 | Gas sterilizer using small cylinder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2557321Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005192641A (en) * | 2003-12-26 | 2005-07-21 | Olympus Corp | Endoscope washing and disinfecting device |
-
1991
- 1991-06-20 JP JP5495491U patent/JP2557321Y2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005192641A (en) * | 2003-12-26 | 2005-07-21 | Olympus Corp | Endoscope washing and disinfecting device |
Also Published As
Publication number | Publication date |
---|---|
JP2557321Y2 (en) | 1997-12-10 |
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