JPH07171201A - Door opening / closing mechanism for cleaning / disinfecting equipment for medical equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a door opening / closing mechanism with a simple structure by eliminating a complicated structure for applying back pressure to the packing 23, reducing the amount of swing of the door, and excellent in sealing performance. . A packing 23 is provided around an opening 22 of the cleaning / disinfecting chamber 20, and one end of the packing is attached to a front surface of the machine body 10 via a hinge 31 and a window 32 is provided at a position corresponding to the opening 22 on a free end side. The first door 30 and the first door 3
The second door 40 that is movably incorporated into 0 to open and close the window portion 32 and can be brought into close contact with the packing 23, the guide pulleys 52 to 54 provided at the free end of the first door 30, and one end to the second door 40. Means 5 for pulling a wire or chain 51 which is attached to the door 40 of the vehicle and is stretched through the guide pulleys 52 to 54.
0 and elastic means 56 for urging the first door 30 in the direction away from the opening 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing mechanism for an apparatus for cleaning and disinfecting various medical instruments and instruments for surgery and inspection, medical materials and the like.

[0002]

2. Description of the Related Art As a type of cleaning / disinfecting apparatus for medical equipment installed in each hospital or clinic, cleaning / disinfecting equipment for accommodating medical instruments / equipment and medical materials contaminated by being used for medical treatment or inspection. There is a room in which high-temperature water or a solution of a disinfectant is sprayed to wash the medical instrument and the like, and sterilized, and then dried with warm air. In such a cleaning and disinfecting device, liquid containing pathogenic bacteria and contaminants washed away from medical instruments and devices may leak from the front opening of the cleaning and disinfecting chamber to the door that closes it, even if only slightly. In order to prevent this from happening, it is necessary to ensure the hermeticity.

Conventionally, as a door opening / closing mechanism in a cleaning / disinfecting apparatus for medical equipment of this kind, typically, a sliding type (sliding the door parallel to the opening end of the cleaning / disinfecting chamber) and a swing type (door) are used. Is to be opened laterally via a hinge), and in order to ensure the reliability of the above-mentioned sealing function, by giving a backup (back pressure) by fluid pressure to the packing attached to the opening end with a floating structure, This packing is forcibly adhered to the inner surface of the door.

[0004]

However, according to the above-mentioned prior art, since a back pressure due to fluid pressure is applied to the packing to bring it into close contact with the door, a fluid pressure supply means and a complicated piping system are required. Moreover, in this case, the door cannot be opened or closed without releasing the adhesion of the packing to the door due to the back pressure.If the back pressure is applied to the packing when the door is opened by mistake, the packing will pop out and come off. Therefore, the back pressure control mechanism is inevitably complicated, which is one of the causes of the price increase. Further, in the case of a swing type door, it has to be swung by about 90 ° or more to open and close.

The present invention has been made under the above circumstances, and its main technical problem is to eliminate the complicated structure for applying back pressure to the packing and An object of the present invention is to provide a door opening / closing mechanism that can reduce the amount of rocking and achieve excellent sealing performance.

[0006]

The above-mentioned technical problems are as follows.
The present invention can effectively solve the problem. That is, the door opening and closing mechanism of the medical device cleaning and disinfecting apparatus according to the present invention,
Packing around the opening of the cleaning / disinfecting chamber where the cleaning / disinfecting liquid and warm air are sprayed at the front of the machine with a time lag, and one end is attached to the front of the machine via a hinge via the cleaning / disinfection. A first door having a window opened at a position on the free end side corresponding to the opening of the chamber, and a first door that is movably incorporated in the first door to open and close the window and open the entire packing. A second door that can be closely attached to the circumference, a guide pulley that is provided at the free end of the first door and that is displaced together with the first door on a circumference centered on the hinge, and one end of the second door. A pulling unit that pulls a wire or a chain that is connected to the door and is stretched through the guide pulley, and an elastic unit that biases the first door in a direction away from the opening.

[0007]

When the opening of the cleaning / disinfecting chamber is in a closed state, the second door is at a position to close the window part of the first door, and the first door is the first driving part to clean and disinfect the chamber. The second door is pressed against the packing of the opening corresponding to the window by being pulled to the front position of the opening.
When opening the opening of the cleaning / disinfecting chamber, the pulling means is driven in the feeding direction of the wire or chain. Since the first door is constantly urged in the direction away from the opening by the elastic means, the first door is displaced in the direction away from the opening on the circumference around the hinge when the wire or chain is extended. Then, by this, the second door is completely separated from the packing, and the wire or chain is continuously fed out even after the first door reaches the movement limit position by the elastic means, so that the second door The door starts moving along the surface of the first door toward the side (hinge side) opposite to its free end, and opens the window portion of the first door. The loading and unloading of medical equipment to the cleaning / disinfecting room is performed through this window.

When the opening of the cleaning / disinfecting chamber is closed, the operation is reversed. That is, when the pulling means is driven in the pulling direction of the wire or the chain, the biasing force of the elastic means moves the second door toward the free end side along the surface direction of the first door located away from the opening. Starts moving. Then, even after the second door reaches the free end position for closing the window portion of the first door and its movement is stopped, the wire or chain is continuously pulled, thereby While the door of is resisting the biasing force by elastic means,
The inner surface of the second door, which is moved toward the opening on the circumference around the hinge, is pressed against the packing of the opening so that the inner surface of the second door is closed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically shows a first embodiment of a door opening / closing mechanism according to the present invention together with an entire cleaning / disinfecting apparatus for medical equipment. A cleaning / disinfecting chamber 20 formed by a box-shaped container 21 is provided above the machine body 10 of the cleaning / disinfecting apparatus.
Further, in the machine body 10, a tank 11 that stores the cleaning water W, a heater 12 that heats the cleaning water W in the tank 11, and the cleaning water W in the tank 11 are passed through a shower nozzle 13. Pump 1 for injection and supply into the cleaning / disinfecting chamber 20
4, a blower 16 for injecting air into the cleaning / disinfecting chamber 20 through the air nozzle 15, a heater 17 for heating air sent from the blower 16 to the air nozzle 15, and contamination discharged from the cleaning / disinfecting chamber 20. A water supply pipe (not shown) for supplying water to the tank 11, a heater 12, and a pump 1.
4, a circuit unit (not shown) for driving the blower 16 and the heater 17, various valve devices and the like are stored.

That is, the cleaning / disinfecting apparatus for medical equipment is
Cleaning and disinfecting chamber 20 in container 21 is provided by putting various medical instruments and devices for medical use and medical materials (hereinafter referred to as medical devices), which are contaminated by medical practice, in a predetermined medical device basket or the like. The cleaning water W in the tank 11 is pre-cleaned (cold water cleaning) by high-pressure jetting the cleaning water W in the tank 11 into the cleaning / disinfecting chamber 20 through the shower nozzle 13, and then the cleaning water W in the tank 11 is heated by the heater 12. By heating and spraying this into the cleaning / disinfecting chamber 20, high temperature water cleaning and disinfection is performed. The contaminants washed off from the medical device by the cleaning water W are collected from the bottom of the cleaning / disinfecting chamber 20 to the collecting unit 18 through the drainage pipe 18a. After the cleaning, the blower 16 and the heater 17 are driven to blow warm air from the air nozzle 15 into the cleaning / disinfecting chamber 20 to dry the medical device. Further, these series of steps are performed via a control device (not shown), and the operation time and the like are set appropriately.

The cleaning / disinfecting chamber 20 is opened so as to face the front side of the machine body 1. A packing 23 is fixedly provided around the front surface 21a of the container 21 at the periphery of the opening 22 in a protruding state. There is. The opening 22 is opened and closed by a first door 30 and a second door 40 provided on the front side of the machine body 1.

The lower end of the first door 30 is attached to the lower part of the front surface of the machine body 1 through a hinge 31, that is, the circumference of the hinge 31 around the horizontal axis is cleaned and disinfected. It is possible to swing and displace within a predetermined angle range with respect to the front surface of the machine body 10 including the opening 22 of the chamber 20. A window 32 is opened in the upper half of the first door 30, which is the free end side, in correspondence with the opening 22 of the cleaning / disinfecting chamber 20.

On the inner surface side of the first door 30, a pair of left and right guide rails 33 extending in parallel to each other in the surface direction (vertical direction) from the vicinity of the lower end to the upper end are provided. The left and right edges of the door 40 are engaged movably in the extending direction of the guide rail 33 via a plurality of rollers 41. The second door 40 is capable of closing the window 32 and packing 23 of the opening 22 of the cleaning / disinfecting chamber 20.
Has an area that can be in close contact with the entire circumference of. A stopper 34 is provided at the upper end of the guide rail 33 to prevent the second door 40 from moving above the position at which the window 32 is closed and protruding from the upper end of the first door 30. There is. Also,
The second door 40 is made of, for example, a transparent material, so that even in the closed state shown in FIG.
The inside can be seen from the outside through the window 32.

On the container 21, a hoisting machine 5 as a pulling means.
0 is installed, and the wire or chain 51 unwound from the hoisting machine 50 has a plurality of guide pulleys 52 to 52.
It is connected to the upper end portion of the second door 40 via a meandering path 54. The guide pulleys 52 to 54 are arranged above the free end (upper end) of the first door 30 and can move back and forth (left and right in the drawing) together with the first door 30. In addition, a tension load toward the front of the first door 30 is applied to the support portion 55 of the guide pulleys 52 and 53 by a tension spring 56 as an elastic means, whereby the first door 30 is It is constantly elastically biased in a direction away from the opening 22.

The door opening / closing mechanism of the cleaning / disinfecting apparatus for medical devices having the above-mentioned structure is usually the opening 2 of the cleaning / disinfecting chamber 20.
1 is in the closed state shown in FIG. That is, the first door 30
The second door 40 is at the upper end position of movement for closing the window 32 of the first door 30 by the wire or the chain 51 pulled by the hoisting machine 50 through the guide pulleys 52 to 54 above. By pulling the first door 30 toward the front position of the opening 22 of the cleaning / disinfecting chamber 20, the inner surface of the second door 40 is pressed against the packing 23 at the peripheral edge of the opening 22.

When the medical equipment contained in the medical equipment basket or the like is to be housed in the cleaning / disinfecting chamber 20, first of all, the hoist 50 is used.
Is rotated in the feeding direction of the wire or chain 51. Then, the first door 30 has the guide pulleys 52 to 54.
Since a tension load is applied to the front of the door by the spring 56 via the wire, as the wire or the chain 51 is paid out by the rotation of the hoisting machine 50, the wire around the circumference centered on the hinge 31 at the lower end is moved. As shown in FIG. 2A, the tilting operation is performed in a direction away from the opening 22 of the cleaning / disinfecting chamber 20. At this time, the second door 40 engaged with the guide rail 33 of the first door 30 is also tilted integrally, so that the inner surface thereof is separated from the packing 23. Further, in the process of tilting the first door 30, the wire or chain 51 is given a tension by the tensile load of the spring 56 via the guide pulleys 53 and 54, so that the second door 40 is The window 32 of the first door 30
The closed position is retained.

When the inner surface of the second door 40 is completely separated from the packing 23 and the first door 30 reaches a tilting angle at which its tensile load is lost due to the spring 56 contracting to its free length, At that time, the tilting operation of the first door 30 is stopped. Then, as the wire or chain 51 is continuously fed out thereafter, the second door 40 is moved to the lower end position along the guide rail 33 of the first door 30 as shown in FIG. 2 (B). The downward movement is started toward the opening of the window 32 of the first door 30. At this time, since the second door 40 is in the position not in contact with the packing 23, the descending movement of the second door 40 is smoothly performed.

When the second door 40 reaches the moving lower end position shown in FIG. 2 (B) and the window 32 of the first door 30 is completely opened, at that time, the wire or chain 51 is unwound. The rotation of the hoisting machine 50 in the direction is stopped. At this time, the hoisting machine 50 can be stopped through position detecting means such as a limit switch for detecting that the second door 40 has reached the moving lower end position. The medical device to be cleaned and disinfected is accommodated in the cleaning and disinfecting chamber 20 together with the medical device basket through the opening 22.

After accommodating the medical device in the cleaning / disinfecting chamber 20,
The opening 22 is closed, but in this case, the hoisting machine 50 is rotated (winding rotation) in the pulling direction of the wire or the chain 51, contrary to the opening operation described above. Then, the second door 40 is lifted from the moving lower end position shown in FIG. 2 (B) via the wire or the chain 51 to start the ascending movement. At this time, a part of the tension of the wire or the chain 51 is passed through the guide pulleys 52 to 54 and the first door 3
0 around the hinge 31 and the opening 2 of the cleaning / disinfecting chamber 20
Although it also acts in the direction of approaching to 2, the approaching motion is blocked by the tensile load of the spring 56. Therefore, the second door 40 is smoothly moved up along the guide rail 33 of the first door 30 at a position not in contact with the packing 23.

As shown in FIG. 2A, when the second door 40 reaches a position where it completely closes the window 32 of the first door 30, its upper end abuts the stopper 34,
Further upward movement is prevented. Then at that point,
The pulling force of the hoisting machine 50 that pulls the wire or chain 51 acts only in the direction of pulling the upper end, which is the free end of the first door 30, through the guide pulley 54, so that the first door 30 has its lower end. Is moved toward the opening 22 of the cleaning / disinfecting chamber 20 against the urging force of the spring 56 on the circumference around the hinge 31. Therefore, the second door 40 at the position that closes the window 32 of the first door 30.
The inner surface of the is pressed against the packing 23 of the opening 22, and the sealed state shown in FIG. 1 is obtained.

When the inner surface of the second door 40 is brought into close contact with the packing 23 at an appropriate pressure, the rotation of the hoisting machine 50 is stopped at that time. The hoisting machine 50 is stopped at this time through, for example, an increase in the load of the hoisting machine 50 or a detection unit that detects that the first door 30 has reached a position for pressing the second door 40 against the packing 23. Can be done.

After the cleaning / disinfecting chamber 20 is hermetically closed, the stored medical device is subjected to a series of processes including the above-described preliminary cleaning process, high temperature water cleaning process and drying process. This cleaning / disinfecting apparatus does not have a high pressure inside the cleaning / disinfecting chamber 20, unlike a device that pressurizes and seals hot steam or sterilizing gas, so that the packing 23 has an excellent sealing property without back pressure. Therefore, the cleaning water W containing pathogenic bacteria and contaminants washed away from the medical device leaks to the outside from between the front surface 21 a of the container 21 at the periphery of the opening 22 of the cleaning / disinfecting chamber 20 and the second door 40. Surely prevent. After the drying process is completed, the window 32 of the first door 30 is opened again by the tilting operation of the first door 30 and the lowering operation of the second door 40, so that the cleaned medical device in the cleaning / disinfecting chamber 20 can be removed. , Through the window 32 together with the basket for medical equipment.

According to this embodiment, the swing motion of the first door 30 around the hinge 31 and the first door 30 are performed.
Since the sliding operation of the second door 40 along the guide rail 33 is performed only by paying out or pulling the wire or the chain 51 by the hoisting machine 50, the drive mechanism thereof can have a simple structure. Further, the swinging amount of the first door 30 may be such that the sliding movement of the second door 30 is not obstructed when the second door 30 is completely separated from the packing 23. You don't have to.

In this embodiment, the first door 30
The amount of swinging during the tilting (opening) operation of the first door 30 is restricted by the spring 56 contracted to a free length.
An appropriate stopper may be provided to regulate the swing amount of the. Further, as elastic means for urging the first door 30 in the opening direction, instead of the tension spring 56 as shown,
A compression spring (not shown) that pushes the first door 30 forward from the upper portion of the container 21 may be used.

Further, according to this embodiment, the downward moving force of the second door 40 caused by rotating the hoisting machine 50 in the feeding direction of the wire or the chain 51 is the second door 4
Although it depends on its own weight of 0, for example, as shown as a second embodiment in FIG. 3, a pulling means 50 ′ is provided on the side opposite to the guide pulley 52, and after the first door 30 is opened, This traction means 50 'via wire or chain 51'
The second door 40 can also be configured to be pulled to the hinge 31 side. In this case, the first door 30 is of a lateral opening type that is opened and closed on a horizontal circumference around a vertical hinge, and the second door 40 is horizontally moved relative to the first door 30. It is effective for sliding movement.

[0026]

According to the door opening / closing mechanism of the cleaning / disinfecting apparatus for medical devices according to the present invention, the following effects are realized. (1) The pressing force of the second door against the packing is forcibly given by the traction means through the first door, and sufficient sealing with the packing is secured, so It is not necessary to apply a back pressure due to fluid pressure to the packing around the opening to bring the packing into close contact with the door, and a fluid pressure supply means and a complicated piping system are not required, so that the cost can be reduced. (2) The packing does not pop out due to erroneous operation when the door is opened, as in the case where back pressure is applied to the packing. (3) Since the swinging amount of the first door during the opening operation need only be such that the second door is completely separated from the packing, it is not necessary to swing it as widely as a general swing door, and therefore Does not require a large occupied space. (4) Since the swinging motion of the first door and the sliding motion of the second door are performed by one traction means, it is possible to have a simple structure.

[Brief description of drawings]

FIG. 1 is a schematic configuration explanatory view of a state in which a cleaning / disinfecting chamber is sealed in a first embodiment of a door opening / closing mechanism according to the present invention, as viewed from a side of a medical instrument cleaning / disinfecting apparatus.

FIG. 2 is an explanatory view of the operation in the first embodiment as seen from the side of the medical device cleaning / disinfecting apparatus, (A) showing a tilted state of the first door, and (B) showing the first door. The state which the 2nd door moved to the open position of the window part in a tilted state is shown.

FIG. 3 is a schematic configuration explanatory view of the second embodiment of the door opening / closing mechanism according to the present invention as seen from above the medical device cleaning / disinfecting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Airframe 20 Washing / disinfecting room 21 Container 22 Opening 23 Packing 30 First door 31 Hinge 32 Window 40 Second door 50 Hoisting machine (pulling means) 51 Wire or chain 52-54 Guide pulley 56 Spring (elastic means) )

Claims (1)

[Claims] 1. A packing provided around the opening of a cleaning / disinfecting chamber, which is opened at the front of the machine and into which the cleaning / disinfecting liquid and warm air are jetted with a time lag, and one end of which is attached to the front of the machine via a hinge. A first door that is attached and has a window opened at a position on the free end side corresponding to the opening of the cleaning / disinfecting chamber, and is incorporated in the first door so as to be movable in the plane direction to open and close the window. And a second door that can be in close contact with the entire circumference of the packing, a guide pulley that is provided at the free end of the first door and that is displaced together with the first door on a circumference centered on the hinge, one end A pulling means for pulling a wire or a chain that is connected to the second door and stretched through the guide pulley; and an elastic means that biases the first door in a direction away from the opening, A cleaning and disinfecting apparatus for medical equipment, characterized by comprising Door opening and closing mechanism of.