JPS6392350A - High pressure steam sterilizer - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a high-pressure steam sterilizer for sterilizing and drying surgical instruments, gauze, absorbent cotton, and the like.

(B) Prior Art Conventionally, in a high-pressure steam sterilizer, after sterilizing with saturated steam for a predetermined period of time, the steam in the chamber is exhausted through an exhaust pipe and the object to be sterilized is moved to a drying process. The drying process is
Generally, the chamber is heated and dried using a drying heater or the like while the lid is left partially open and outside air is taken into the chamber.

By the way, such a method of half-opening the lid during the drying process, for example, in the high-pressure steam sterilizer shown in Japanese Utility Model Application Publication No. 57-20393 '7, involves manually operating the handle of the lid. It was necessary for the operator to replace the handle in anticipation of the end of the sterilization process. Therefore,
Workers sometimes had to stop other tasks, or sometimes forgot to operate the handle.

Problems to be Solved by the Invention The present invention takes the above drawbacks into consideration and provides an autoclave sterilizer that facilitates the work of the operator.

(-1-) Means for Solving the Problems The high-pressure steam sterilizer of the present invention includes a frame, a chamber, an arm member disposed across the opening of the chamber, and an arm member disposed across the opening of the chamber. a connecting member inserted approximately in the center; a lid plate fixed to one end of the connecting member and inscribed in the opening edge of the chamber; After sterilization, a handle having a cam portion for moving the connecting member relative to the arm member, and a portion of the frame body corresponding to the other end side of the handle when the chamber is closed, are The other end of the handle is provided with a moving means that applies electrical or mechanical action.

Since the present invention is constructed as described above, after the sterilization process is completed, an electrical or mechanical action is applied to the other end of the handle by a moving means to release the lid of the chamber, It can automatically move to the drying process.

(to)) Examples Embodiments of the present invention will be described based on the drawings.

(1) is a box-shaped frame, and (2) is a cylindrical chamber placed horizontally within the frame (1) with the opening (3) facing the front of the frame, and the inner bottom is sterilized. A drying heater (4) and a drying heater (5) are provided on the outer periphery. (6) is an arm member disposed astride the opening (3) of the chamber (2), which is pivotally attached to the side wall of the chamber (2) so as to be freely rotatable in the horizontal direction; 1) is pivotally mounted to a mounting bracket (7) protruding from the front surface of the housing 1) so as to be rotatable in the horizontal direction. (8) is a connecting member inserted through the approximate center of the arm member (6); (9) is a lid plate fixed to one end of the connecting member and inscribed in the opening edge of the chamber (2); (101 is the arm member); A plate spring provided between the member (6) and the lid plate (9) is fixed to the connecting member (8) together with the lid plate (9). (11) has one end attached to the connecting member ( 81 is rotatably pivoted to the other end of the connecting member (
8) relative to the arm member (6), and when the lid is closed (the position indicated by the broken line in Fig. 2), the handle is slightly from the center point of the lid plate (9). An arc-shaped protrusion (13) is formed on the left side of the handle (13) for smooth rotation.As shown in Fig. 3, this handle (11) rotates from the closed position to open the protrusion (13).
When the protrusion (131) reaches a position 11 away from the center of the chamber (2), the tensile force of the leaf spring (10) automatically causes the protrusion (131) to reach a position 13 away from the center of the chamber (2). ) has a shape that stops when it reaches this position, and the cover plate (9) is in a so-called half-open state in this position, forming a small gap between it and the chamber (2). The handle (11) has its other end extended beyond the pivot point of the arm member (6) when the lid is closed, and has a grip portion (14) and a frame that protrude in the vertical direction at this end. A suppressing portion (151) is formed that protrudes toward the Tll side.The lid plate (9) has a circular dish shape when the lid is closed, and the upper and lower sides are curved inward when the lid is opened. When viewed from the front, it has an oval shape.

Here, the horizontal length of the lid plate (9) is A1, the vertical length of the lid plate (9) when opened is (B1), and the vertical length of the lid plate (9) when the lid is sealed. (B2) and the vertical length of the lid plate (9) in the half-open state is (B3), the relationship between each length is As B2 ) B3 ) B1.

06) is a motor mounting plate (17) provided inside the frame (1).
A motor fixed to I is used that can obtain high torque output. 0 (to) is a circular cam plate that is connected and fixed to the output shaft of the motor (16), and rotates according to the rotation of the motor (161). The link (■) is rotatably supported at the other end of the link, and (C) is the protruding pin that is rotatably supported at the other end of the link. This is a cylindrical pin guide installed in the cylindrical pin guide.

The protruding pin group is slidably disposed within the pin guide (21), and moves linearly in accordance with the rotation of the motor 06) to remove the pin from the pin guide (21).
11 protrudes outward, and the handle (pressing part 0 of 111
5).

In addition, in the most retracted state, the tip of the protruding pin (2) is located within the pin guide CI) (as shown by the broken line in FIG. (indicated by a straight line in FIG. 2). This moving distance (I,) is the handle (
This corresponds to the distance required to move the protrusion G3 of the handle (11) a distance of 12, which is slightly longer than 11, and when the protrusion pin protrudes the most, the protrusion G3 of the handle (11)
1 is l! It is designed to move 3 times (see Figure 6).
. ■ is a roller (23) that contacts the circumferential side of the cam base
This is a switch operated by a spring pedestal connected to the In addition, the cam plate (marked with 1 indicates a recess (5) is provided at a position corresponding to the roller when the protruding pin is retracted the most, and the roller (23) of the switch is located in this recess. (5) When it enters, the OF due to the spring root
It is designed to be F.

Fig. 5 shows a schematic block diagram, where ① is a relay having a relay contact connected in parallel with the switch, (branch) is a motor control circuit that drives the relay, and ④ is a start signal to the motor control circuit. It is a central control circuit that receives detection signals from various sensors to perform sterilization, and provides operating signals to various devices. When the motor control circuit (support) receives a start signal from the Menji central training circuit entrance, it takes about 2 seconds (the time required for the motor (16) to make one rotation is about 5 seconds). It is set so that the relay contact (2) l) of α) is turned on.

Next, the operation in the above configuration will be explained.

First, the object to be sterilized is stored in the chamber (2), and when the handle 01 is turned to close the lid and the sterilization operation is started, the central control circuit (29) starts the sterilization heater (4).
) is energized (in this state, it is assumed that a predetermined amount of water is poured into the chamber 12). Next, the air in the chamber (2) is evacuated by means not shown to form saturated steam, and high-pressure steam sterilization is performed in this state for a predetermined period of time.

After a predetermined period of time has elapsed, the central control circuitry drives means (not shown) to discharge the water and steam in the chamber (2). At the same time, the central control circuit (2) also provides a start signal to the motor control circuit (2). Then, the motor control circuit (
branch) will turn on relay contact m of relay ■,
The motor tap starts rotating motion. As a result, the roller ■ is removed from the recess (5), the switch (221 is turned on,
Even if the relay contact (O
The motor (turns off 2 seconds after N operation) (
16) continues the rotating operation. Therefore, the motor (16)
Due to this rotation, the protruding pin ■ presses the suppressing part 05) of the handle 01), and the protruding part f137 of the handle (11)
Move by i1-/2. And after this, the motor (
16) rotates once, and the roller (fang) enters the recess of the cam plate (switch) again, and when the switch is turned off, the motor (16)
) will stop rotating. In addition, the handle ti
As mentioned above, when the protrusion 0J moves by 12, the protrusion 0J automatically moves by 13 (actually, it only needs to be moved by 11), so the lid plate (9) is in a half-open state (note that the chamber (2) ), the lid plate (9) remains sealed if the pressure inside is above atmospheric pressure, but if the pressure is below atmospheric pressure,
No pressure is applied to the lid plate (9) (and the lid plate (9) may be in a half-open state), and outside air can be taken into the chamber (2). And the central control circuit (2!l)
When the lid plate (91) was half open, the drying heater (
5) is energized for a predetermined period of time to dry the object to be sterilized.

Although the present invention has been described above with respect to a structure that mechanically acts on the suppressing part of the handle, it is not limited to this. For example, a permanent magnet may be embedded in the pressing part of the handle, and a pin guide may be used. An electromagnet may be provided at the position where the permanent magnet and the electromagnet are provided, and the handle may be rotated by the repulsive force between the permanent magnet and the electromagnet.

(G) Effects of the Invention Since the present invention is configured as described above, after the sterilization process is completed, an electrical or mechanical action is applied to the other end of the handle by the moving means to release the lid of the chamber. It is possible to provide a high-pressure steam sterilizer that can automatically shift to a drying process and facilitate the work of an operator.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the high-pressure steam sterilizer of the present invention, Fig. 2 is a cross-sectional view of the main part, Fig. 3 is an explanatory diagram of the operation of the handle, Fig. 4 is a longitudinal cross-sectional view of the main part, FIG. 5 is also a schematic electrical circuit diagram. (1) Frame, (2) Chamber, (6)
...Arm member, (8)...Connecting member, (9)...
Lid plate, (11)...Handle, (16)...Motor, u81...Cam plate, (19+...Link, (3)
)・-Protruding pin, T21)... Pin guide, ■...
Relay, (support)...Motor control circuit. Applicant: Sanyo Electric Co., Ltd. (1 other person) Representative: Patent attorney Takuji Nishino (1 other person) Figure 1

Claims (2)

[Claims] (1) A frame, a cylindrical chamber housed in the frame and having an opening for storing objects to be sterilized, an arm member disposed astride the opening of the chamber, and the arm member a connecting member inserted through approximately the center of the connecting member; a plate fixed to one end of the connecting member and inscribed in the opening edge of the chamber; one end of the connecting member being rotatably attached to the other end of the connecting member; and a handle having a cam portion for moving the connecting member relative to the arm member, wherein a portion of the frame body corresponding to the other end side of the handle when the chamber is closed is sterilized. A high-pressure steam sterilizer characterized in that a moving means is provided for applying an electrical or mechanical action to the other end of the handle after completion of the sterilization. (2) The moving means includes a motor, a converting means for converting rotational motion of the motor into a linear motion, a protruding pin connected to the converting means and capable of freely protruding from the frame, and a 2. The high-pressure steam sterilizer according to claim 1, further comprising a motor control circuit for driving the high-pressure steam sterilizer.