JP2008229201A - Steam sterilizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent falling of a sterilizer main body. <P>SOLUTION: The device is provided with a chamber to contain an object to be sterilized, a lid openable and closable to seal the opening of the chamber, a steam generating means to supply steam into the chamber, or generate steam in the chamber, a control means to control the steam generating means, etc., and a sterilizer body to house the control means, the chamber, etc. Falling preventing metal fittings are installed on the right and the left a bottom part of the sterilizer body to be drawable right and left. Their front and rear ends projects by a prescribed length or over from the front and the rear of the sterilizer body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a high-pressure steam sterilizer that is installed mainly in a hospital or the like and sterilizes an object to be sterilized such as a medical instrument with high-temperature high-pressure steam.

In a medical sterilizer that houses and sterilizes an object to be sterilized in a chamber and supplies a saturated vapor to the chamber to sterilize the object to be sterilized, for example, as shown in Patent Document 1 and Patent Document 2, A lid is pivotally supported on the front or upper surface of the chamber so that it can be opened and closed.
JP 2004-156229 A JP-A-10-272170

  On the other hand, in the case of the above configuration, the center of gravity position of the sterilizer body is moved by opening and closing the lid, and based on the judgment that the possibility of falling is increased particularly when the lid is opened, for example, the sterilizer is placed at the bottom of the sterilizer. By placing an iron plate that is larger than the bottom area by a predetermined size and connecting this plate and the sterilizer body with metal fittings, the sterilizer can be operated even when the lid is opened and closed with the sterilizer tilted by a predetermined angle in the front-rear and left-right directions. However, when the sterilizer is connected to an iron plate, the sterilizer cannot be easily moved.

  Therefore, an object of the present invention is to enable easy movement of the sterilizer body while preventing the sterilizer from toppling over.

  According to the first aspect of the present invention, there is provided a chamber in which an object to be sterilized is stored and sterilized, an openable / closable lid for sealing the opening of the chamber, and supply of steam into the chamber / or steam in the chamber. A steam generator that generates steam, a controller that controls the steam generator, etc., and a sterilizer body that houses the control means, chambers, and the like. It is provided with a fall-preventing metal fitting that is freely mounted and whose front and rear ends protrude beyond the front and rear of the sterilizer body by a predetermined dimension or more.

  According to a second aspect of the present invention, in the configuration of the first aspect, the fall prevention metal fitting is formed by molding a metal wire into a substantially rectangular shape.

  According to a third aspect of the present invention, in the configuration according to the first or second aspect, the lock means for locking the lid in the closed position and the detection means for detecting the pull-out of the fall prevention metal fitting are provided, and the control means is provided. When the detection means does not detect the withdrawal of the fall prevention metal fitting, the lid is locked in the closed position by the lock means.

  According to the configuration of claim 1 of the present invention, by mounting the fall prevention metal fittings on the bottom left and right of the sterilizer body so that it can be inserted and removed freely in the left and right directions, the lid is opened and the center of gravity moves back and forth. Even if the sterilizer body tilts for some reason, such as an earthquake, the sterilizer body is supported by the fall-prevention bracket, and the sterilizer body is reliably prevented from falling. By narrowing the width, it is possible to pass through passages and doors relatively easily.

  With the configuration according to claim 2 of the present invention, an increase in weight due to mounting of the fall-preventing metal fitting can be suppressed by constituting the fall-preventing metal fitting with a metal wire.

  According to the third aspect of the present invention, when the fall prevention metal fitting is stored, the lid is locked by the lock mechanism so as not to be opened, so that the sterilizer main body by the fall prevention metal fitting is not set. Can be reliably prevented from falling.

  An embodiment according to the present invention will be described first with reference to FIG. 1. Reference numeral 1 denotes a medical sterilizer main body. A lid 3 is pivotally supported on an upper portion of the main body case 2 so as to be opened and closed in the vertical direction. A moving caster 4... Is mounted on the bottom, and an exhaust tank 5 is detachably housed in the lower front part from the front, and a needle-type pressure gauge 6 is arranged in the upper front part. The lid 3 is pivotally supported by a hinge (not shown) attached to its rear end so as to be opened and closed in the vertical direction.

  Further, an operation unit 7 is mounted in front of the top surface of the lid 3, and various displays and a plurality of operation keys 10... Are arranged in the operation unit, and in front of the operation unit 7, an internal hand is provided. A substantially U-shaped handle 12 in which an insertion groove 11 for inserting the like is inserted is mounted, and a sliding lever 13 is slidably housed in the insertion groove 11 in the front and rear direction.

  In the main body case 2, as shown in FIG. 2, a bottomed cylindrical chamber 8 having an open upper surface is housed, and a chamber lid 9 having the chamber opening fixed to the inner surface of the lid 3. Seal in an openable and closable manner.

  On the other hand, a pair of left and right hooks 15, 15 are pivotally supported on the upper portion of the chamber 8 so as to be rotatable in the front-rear direction by a rotary shaft 16, and a hook-like locking claw 17 integrally formed at the upper end of these hooks. , 17 projecting upward through the upper surface plate 18 of the main body case 2 and are urged to rotate in the direction in which the locking claws 17, 17 are formed by a spring 19.

  On the front side surface of the chamber lid 9, lock fittings 21 and 21 which are opposed to the hooking claws 17 and 17 of the hooks 15 and 15 and engage with the hooking hooks detachably are integrally formed by welding or the like. When the lid 3 is closed by holding the handle 12, the latching claws 17, 17 of the hooks 15, 15 are engaged with the lock fitting 21 by the bias of the spring 19, and the lid 3 is closed. It will lock securely.

  On the other hand, the handle 12 is fixed to the front plates 24 and 24 of the fixing plate 23 fixed to the lid 3 with screws or the like, and the fixing plate 23 is an electromagnetic that prevents the sliding lever 13 from sliding during a sterilization operation or the like. The solenoid 25 is fixed.

  The slide lever 13 is connected to the rear end surface of the slide plate 26 at the rear end surface, and the slide plate is connected to the rear end of the slide plate 13 at an appropriate position close to the locking claws 17 and 17 of the hooks 15 and 15. On the release shaft 27 projecting from the hook 15, a hooking piece 28 that is locked only in the urging direction of the hooks 15, 15 by the spring 19 is bent, whereby the lid 3 is completely closed and the hooks 15, 15 are closed. If the sliding lever 14 is slid to the front side when the locking claws 17 are engaged with the lock fitting 21, the slide plate 26 slides forward and the latching piece 28 is locked to the release shaft 27. Thus, the hooks 15 and 15 can be rotated forward to release the engagement between the locking claws 17 and 17 and the lock fitting 21 to open the lid 3.

  Further, the slide plate 26 is integrally formed with an upright piece 31 having an engagement hole 30 that is opposed to the plunger shaft 29 of the electromagnetic solenoid 25 so that the lid 3 is completely closed and hooked. When the 15 and 15 locking claws 17 and 17 are engaged with the lock fitting 21, the engaging hole 30 is positioned opposite the tip of the plunger shaft 29. At this time, when the sterilization operation is started, the electromagnetic solenoid 25 is energized. Then, the plunger shaft 29 is engaged in the engagement hole 30 so that the sliding operation of the slide plate 26 and the sliding lever 14 is prevented so that the opening of the lid 3 cannot be performed. Is configured.

  In FIG. 1, reference numerals 40 and 40 denote anti-tip fittings mounted on the left and right sides of the bottom of the sterilizer main body 1, as shown in FIG. 3, by bending a metal wire and before and after the sterilizer main body 1. Extending substantially rectangular protrusions 41 and 41 are formed, and both ends of the wire are supported on the bottom plate 42 of the sterilizer body 1 by a support fitting 43.

  The support fittings 43 are integrally formed with concave grooves into which the ends of the fall prevention fittings 40, 40 are engaged, and the fall prevention fittings 40, 40 are between the bottom plate 42 and the support fittings 43,. The end portions of 40 are configured to be slidably held in the axial direction, and the protrusions 41 and 41 have a protrusion dimension in the front-rear direction, and the sterilizer body 1 with the lid 3 opened. Is a length that does not fall even if tilted 10 degrees in the front-rear direction, and the sliding dimension in the left-right direction is also a width dimension that does not fall even if the sterilizer body 1 is tilted 10 degrees in the left-right direction.

  With these configurations, the lid 3 is opened and closed by moving the sterilizer body 1 to a desired location and then locking the casters 4... And pulling out the fall-preventing metal fittings 40, 40 to the pull-out position shown in FIGS. Even if the sterilizer body 1 is tilted back and forth and left and right for some reason in a state where the center of gravity is moved by the above, the fall prevention metal fittings 40 and 40 reliably prevent the fall.

  Further, when the sterilizer body 1 is moved to another place or transported, the fall prevention metal fittings 40, 40 are pushed into the storage position shown in FIG. 1, and the casters 4 are unlocked. It can be moved relatively easily.

  44 and 44 are detection switches mounted facing the leading end of one of the above-described anti-tip fittings 40 and 40, which are constituted by a microswitch or the like, and the anti-tip fittings 40 and 40 are at the most extended position. By pulling the contact point on or off, the pull-out prevention metal fittings 40, 40 are detected.

  FIG. 5 is a piping system diagram. A heater 50 such as a sheathed heater serving as a steam generating means is attached to the inner bottom of the chamber 8, and a pressure safety valve 51 and the pressure gauge 6 are connected to the side of the chamber 8. A pressure pipe 52; an exhaust pipe 53 having an exhaust valve 53 connected halfway and having a tip opened to the water in the exhaust tank 5; and a lead-out pipe 57 connected to a vacuum breaker valve 55 and a digital pressure sensor 56; Temperature sensors 58, 59, 60 are connected to the vicinity of the outlets of the exhaust pipe 54 and the outlet pipe 57 and the intermediate height position of the chamber 8, respectively.

  Reference numeral 61 denotes a control means constituted by a microcomputer or the like for input and output from the operation section 7, pressure sensor 56, temperature sensors 58, 59, 60, detection switches 44, 44, etc. arranged on the top surface of the lid 3. Based on this, energization to the electromagnetic solenoid 25, the heater 50, the exhaust valve 53, etc. is controlled according to a predetermined sequence set in advance.

  Further, the control means detects the stored state of the overturning preventive fittings 40, 40 from the outputs of the detection switches 44, 44, and when these overturning preventive fittings are not pulled out to a predetermined pulling position, the electromagnetic solenoid 25. This prevents the sterilizer body 1 from overturning due to the opening of the lid 3 when the overturn prevention fittings 40, 40 are not set. It can be prevented.

It is a perspective view which shows the Example of this invention. It is an exploded perspective view in the state where a part of components were removed similarly. It is a bottom perspective view for explaining operation of the principal part similarly. It is a perspective view for operation explanation similarly. It is a piping system diagram similarly.

Explanation of symbols

1 Sterilizer body 3 Lid 8 Chamber 25 Plunger (locking means)
40 Fall prevention bracket 44 Detection switch (detection means)
50 Heater (steam generating means)
61 Control means

Claims (3)

A chamber in which an object to be sterilized is stored and sterilized, an openable / closable lid for sealing the opening of the chamber, a steam generating means for supplying / steaming steam in the chamber, and the steam A control means for controlling the generating means, and a sterilizer main body for storing these control means and the chamber, etc. A steam sterilizer characterized in that it is provided with a fall-prevention fitting that protrudes from the front and rear of the sterilizer body by a predetermined dimension or more. The steam sterilizer according to claim 1, wherein the fall prevention metal fitting is formed by forming a metal wire into a substantially rectangular shape. Locking means for locking the lid in the closed position and detection means for detecting the withdrawal of the fall prevention metal fitting are provided, and when the detection means does not detect withdrawal of the fall prevention metal fitting, The steam sterilizer according to claim 1 or 2, wherein the lid is locked in the closed position by a locking means.

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