JPH0824704B2 - Door opening / closing mechanism for cleaning / disinfecting equipment for medical equipment - Google Patents

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. There is something that opens sideways through a hinge). In the case of a sliding door, the packing is set in a floating state in the groove around the opening of the cleaning / disinfecting chamber, and after the door is closed, a backup (back pressure) is applied to this packing by fluid pressure to force it on the inner surface of the door. The close contact between the front opening and the door of the cleaning / disinfecting chamber is ensured.

[0004]

However, according to the slide door in 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. become. Moreover, in this case, the door cannot be opened / closed (sliding) unless the packing's adhesion to the door due to back pressure is released.If back pressure is applied to the packing when the door is opened by mistake, the packing will pop out and come off. As a result, the back pressure control mechanism must be complicated, which is one of the causes of the price increase. Also,
Swing-type doors must be swung by approximately 90 ° or more to open and close.

The present invention has been made under the circumstances as described above, and its main technical problem is to eliminate the complicated structure for applying back pressure to the packing, which is excellent. It is to provide a door opening / closing mechanism that can obtain a hermeticity.

[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,
A packing provided around the opening of the cleaning / disinfecting chamber in which the cleaning / disinfecting liquid and warm air are jetted with a time difference facing the front side of the machine body, and provided along the mutually opposing edges of the opening. A pair of first orbits, a pair of second orbits provided on the front surface of the fuselage in the longitudinal direction side by side with the first orbits, and respectively movable in the first and second orbits. A door disposed movably along the first and second tracks via engaged rollers; and a drive unit for reciprocating the door along the first and second tracks. ,
Each of the first and second tracks has a longitudinal portion that guides the movement of the door in a non-contact manner and in parallel with the packing, and extends from one end of the longitudinal portion to close the door to the opening. An inclined portion for guiding from the front surface side to the pressure contact position with the packing is formed.

[0007]

According to the present invention, the door is guided by the first and second tracks through the rollers engaged in the first and second tracks, and is driven by the drive unit on the front side of the machine body. Is moved to open and close the opening of the cleaning and disinfecting chamber. When closing the opening, the door is moved from the open position toward the opening. Then, in the initial stage of its movement, the rollers travel in the longitudinal portions of the first and second tracks,
The door is moved in non-contact with and parallel to the packing, and when the door reaches a position substantially in front of the opening, the rollers reach the inclined portion from the longitudinal portions of the first and second tracks. Since the vehicle travels in the inclined portion, the movement of the door by the drive portion is guided to the packing side along the inclined portion and is pressed against the front surface of the packing. When opening the cleaning / disinfecting chamber, the reverse operation is performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically shows a preferred first embodiment of the door opening / closing mechanism according to the present invention together with the 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 for storing cleaning water W and an inside of the tank 11 are provided. Heater 12 for heating the cleaning water W of the above, a pump 14 for injecting the cleaning water W in the tank 11 into the cleaning / disinfecting chamber 20 through the shower nozzle 13, and an air in the cleaning / disinfecting chamber 20 through the air nozzle 15. And a heater 17 for heating air sent from the blower 16 to the air nozzle 15.
And a recovery unit 18 for recovering the contaminants discharged from the cleaning / disinfecting chamber 20 together with the cleaning water.
A water supply pipe (not shown) for supplying water, a circuit portion (not shown) for driving the heater 12, the pump 14, 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 10. 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 door 30 provided on the front side of the machine body 10.

A pair of first tracks 40 (only one track is shown in the figure) is provided at the left and right edges of the opening 22 of the cleaning / disinfecting chamber 20, and the machine body 1
On the front face of 0, a pair of second orbits 50 provided below the first orbits 40 and parallel to the first orbits 40 (only one side orbit is shown in the figure). Is provided). Rollers 31 and 32 are arranged in the first and second tracks 40 and 50, respectively, and the rollers 31 and 32 are attached to the upper and lower ends of the left and right edges of the door 30, respectively.

As shown in a horizontal cross section in FIG. 2, the first and second tracks 40 and 50 are fixed to the outer side surface 24a and the inner side surface 24b of the frame 24 fixed to the side surface of the container 21. This is because the lower end portion of the upper first track 40 and the upper end portion of the lower second track 50 have such a positional relationship that they overlap each other. First orbit 40
Is a pair of rail members 41, 4 arranged in parallel with each other.
2, the second track 50 is similarly formed by another pair of rail members 51 and 52. The upper roller 31 arranged in the first track 40 is connected to the door 3
It is rotatably attached via a shaft 31a to a bracket 33 provided so as to project to the outside of the frame 24 from both left and right sides at the upper end of 0.
The lower roller 32 disposed inside is rotatably attached via a shaft 32a to a bracket 34 provided so as to project from the left and right sides at the lower end of the door 30 to the inside of the frame 24.

The first track 40 has a longitudinal portion 40A extending vertically along the left and right edges of the opening 22.
And the longitudinal portion 4 reaching the upper end positions of the both side edge portions.
The inclined portion 40B extends at an angle of about 45 ° so as to be deflected from the upper end of 0A toward the rear of the container 21. Similarly, the second track 50 has a longitudinal portion 50A extending in the up-down direction along the left and right edges of the fuselage 10.
And extending from the position near the lower end of the container 21, in other words, the upper end of the longitudinal portion 50A reaching the lower end of the first track 40, inclined at approximately 45 ° so as to be deflected toward the rear of the container 21. It consists of a slanted portion 50B.

A drive unit 60 is installed above the container 21. The drive unit 60 has a wire or chain 61 whose one end is connected to the upper end of the door 30 and a hoisting machine 62 for pulling the wire or chain 61 via a guide pulley 63 located on the door 30. Consists of. The guide pulley 63 is elastically pressed and urged toward the front of the door 30 by the spring 64.

That is, the door 30 is reciprocated up and down by the hoisting rotation or the hoisting rotation of the hoisting machine 62 in the drive unit 60, and the movement is caused by the rollers 31, 32 to the first and second orbits 40, 40. Guided to 50. When the rollers 31 and 32 are traveling in the longitudinal portions 40A and 50A of the tracks 40 and 50, the door 3
0 is guided in non-contact with and parallel to the packing 23, and the rollers 31 and 32 are slanted parts 40 on the tracks 40 and 50.
The door 30 has the opening 22 when traveling in
On the front side of the packing 23, it is slantly translated while maintaining a vertical posture, and is moved toward and away from the front surface of the packing 23.

The door opening / closing mechanism of the medical instrument cleaning / disinfecting apparatus having the above-described structure is usually the opening 2 of the cleaning / disinfecting chamber 20.
2 is in the closed state shown in FIG. That is, the upper and lower rollers 31 and 32 of the door 30 are connected to the first and second tracks 40 and 50.
Is located in the upper end inclined portions 40B and 50B of the door 30
The peripheral portion of the inner surface of the is pressed against the packing 23 on the peripheral edge of the opening 22. At this time, the guide pulley 63 on which the wire or chain 61 that suspends the door 30 is hung is unevenly distributed in the direction in which the spring 64 is compressed by the tension of the wire or chain 61.

When accommodating the medical device placed in the medical device basket or the like in the cleaning / disinfecting chamber 20, the hoisting machine 62 of the drive unit 60 is rotated (lowered and rotated) in the feeding direction of the wire or the chain 61. Then, the door 30 starts its downward movement due to its own weight, and accordingly, the roller 3
1, 32 first run obliquely downward along the inclined portions 40B, 50B of the first and second tracks 40, 50. For this reason, the door 30 is displaced so as to project forward of the opening 22 while moving downward, and the inner surface 30a of the door 30 has the packing 2
Move away from 3. In addition, as the door 30 moves forward,
The guide pulley 63 is moved by the urging force of the spring 64 to 6
It is pushed to the 3'position.

The inner surface of the door 30 is completely separated from the packing 23, and the rollers 31 and 32 have the first and second tracks 40 and 5.
31 ', which is the upper end position of the longitudinal portions 40A and 50A of 0
And 32 ', the hoisting machine 62 continues to be wound down and rotated, so that the door 30 causes the roller 3 to travel downward in the longitudinal portions 40A and 50A.
While being guided by 1, 32, the opening 2 of the cleaning / disinfecting chamber 20
2 from the front position 30 ′ of 2 to move straight down to open the opening 22. Since the downward movement of the door 30 at this time is performed at a position completely away from the packing 23 to the front, the door 30 can be smoothly operated without friction with the packing 23.

When the door 30 reaches the moving lower end position (the position in front of the lower ends of the longitudinal portions 40A and 50A) shown in FIG. 4, the lowering rotation of the hoisting machine 62 is stopped. At this time, the hoisting machine 62 can be stopped, for example, through a position detecting means such as a limit switch for detecting that the door 30 has reached the lower end position of movement. 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.

When the medical device is stored in the cleaning / disinfecting chamber 20,
The opening 22 is closed, but in this case, contrary to the opening operation described above, the hoisting machine 62 of the drive unit 60 is rotated (winding rotation) in the winding direction of the wire or chain 61. Then, the door 30 starts to move upward by being lifted from the movement lower end position shown in FIG. 4 via the wire or the chain 61, and the longitudinal portions 40A, 50A of the first and second tracks 40, 50. The rollers 31 and 32 located at the lower end positions of the rollers are moved upward along the insides of the longitudinal portions 40A and 50A. Therefore, the door 30 has the packing 23.
And move up straight in non-contact position.

Then, the door 30 reaches almost the front position of the opening 22 of the cleaning / disinfecting chamber 20 as shown by the chain double-dashed line in FIG. 3, and the rollers 31 and 32 move to the first and second tracks 40 and 40.
Even after reaching the positions 31 ′ and 32 ′, which are the upper end positions of the longitudinal portions 40A and 50A in 50, the hoist 62
By continuing to wind and rotate the door, the door 30
Is the inclined portions 40B, 5 of the first and second tracks 40, 50.
While being guided by the rollers 31 and 32 traveling upward in the 0B, the opening 22 is moved diagonally upward toward the packing 23, and the inner surface is pressed against the packing 23.

Here, when the guide pulley 63 on which the wire or the chain 61 is hung is fixedly provided above the door 30, the door 30 is provided with the first and second tracks 4.
Between the guide pulley 63 and the door 30, as it moves diagonally upward along the inclined portions 40B and 50B of 0 and 50,
The wire or chain 61 is changed from the vertical state shown by the chain double-dashed line 61 ′ in FIG. 3 to the inclined state shown by the broken line 61 ″, in other words, this wire or chain 61 and the inclined portion 4
Since the angle with 0B and 50B increases so as to approach 90 °, the tension acting on the wire or the chain 61 increases and the pressing force against the packing 23 is diminished. However, according to this embodiment, since the guide pulley 63 is movable, the tension of the wire or the chain 61 increases as the door 30 moves diagonally upward toward the packing 23, so that the spring 64 is compressed. Move backward. Therefore, the guide pulley 6
Between the door 3 and the door 30, the wire or chain 61 is held in a substantially vertical state as shown by the solid line in the figure.

When the door 30 reaches the upper end position of its movement and the inner surface is brought into close contact with the packing 23, at that time, the hoist 62
The hoisting rotation of is stopped. At this time, the hoisting machine 62 can be stopped by, for example, a detection unit that detects an increase in the load of the hoisting machine 62 or the amount of backward movement of the guide pulley 63. Also, the inner surface of the door 30 is the packing 23.
In the state in which the door 30 and the chain 61 are in close contact with each other, tension is applied to the wire or the chain 61 by the guide pulley 63 urged by the spring 64, so that a required close contact force of the door 30 with respect to the packing 23 is secured.

After the cleaning / disinfecting chamber 20 is sealed, a series of treatments such as the above-described pre-cleaning step, high-temperature water cleaning step and drying step are performed on the accommodated medical device. 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. When the drying process is completed, the opening 22 of the cleaning / disinfecting chamber 20 is moved again by the lowering operation of the door 30 by the lowering rotation of the hoisting machine 62 of the drive unit 60.
Is opened, and the cleaned medical device is taken out from the cleaning / disinfecting chamber 20 together with the medical device basket.

By the way, in the state of FIGS. 1 and 3, the door 30 is pressed against the packing 23 so as to be in close contact with or adsorbed thereto, and therefore the hoist 62 of the drive unit 60 is wound to open the door 30. It is conceivable that even if the door 30 is rotated down, the downward movement cannot be easily started only by the own weight of the door 30. Therefore, more preferably, as shown as a second embodiment in FIG.
The lower guide pulleys 65, 66 are provided directly below the lower end of the moving lower end position of the roller 32 in the longitudinal portion 50A of the second track 50, and the upper guide pulley 63 and the hoisting machine 62 are provided. Both ends of the wire or chain 61 mounted so as to pass through the drive pulley 62a and the lower guide pulleys 65 and 66 are connected to the upper and lower ends of the door 30. In this way, at the time of the opening operation, the wire or chain 61 unwound by the hoisting machine 62 through the upper guide pulley 63 is forced to move the door 30 downward through the lower guide pulleys 65 and 66 on the one hand. The door 30 can be immediately moved downward because the door 30 is towed.

Therefore, the first and second orbits 40, 5
0 is provided substantially horizontally along the upper and lower edges of the opening 22 of the cleaning / disinfecting chamber 20 facing each other and the extension direction thereof, and if the driving unit 60 as in the second embodiment is used as the driving means, the door It is also possible to adopt a laterally opening type in which 30 is slid horizontally.

[0027]

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 traction force of the drive unit is converted into the pressing force of the door against the packing by the inclined portions in the first and second tracks, and the sufficient sealing property between the door and the packing is ensured. Can be a simple structure with a towing device, and despite being a sliding door,
It is not necessary to apply back pressure due to fluid pressure to the packing around the opening of the cleaning / disinfecting chamber to bring the packing into close contact with the door.
Since there is no need for pressurized fluid supply means or complicated piping system,
The price 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) When the door is opened, the door is immediately separated from the packing at the beginning of the operation, and when the door is closed, the packing is not in contact with the packing until just before the end of the operation.

[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 a partial cross-sectional view showing the first embodiment by cutting it horizontally.

FIG. 3 is a schematic explanatory view showing an operation when the door is at a moving upper end position in the first embodiment.

FIG. 4 is a schematic explanatory view showing an open state in which the door is at the lower end position of movement in the first embodiment.

FIG. 5 is a schematic configuration explanatory view showing a second embodiment of the door opening / closing mechanism according to the present invention.

[Explanation of symbols]

 10 Aircraft 20 Washing / disinfecting room 21 Container 22 Opening 23 Packing 30 Door 31, 32 Roller 40 First track 50 Second track 40A, 50A Longitudinal part 40B, 50B Inclination part 60 Drive part 61 Wire or chain 62 Winding Machine 63 Guide pulley 64 Spring

Claims (4)

[Claims] 1. A packing provided around the opening of a cleaning / disinfecting chamber, which is opened to face the front side of the machine body and in which the cleaning / disinfecting liquid and warm air are jetted with a time lag, and the opposite edges of the opening are opposed to each other. A pair of first orbits provided along the pair, a pair of second orbits provided on the front surface of the fuselage in the longitudinal direction side by side with the first orbits, and in the first and second orbits A door disposed movably along the first and second tracks via rollers respectively movably engaged with the door, and reciprocating the door along the first and second tracks. A drive unit, wherein the first and second tracks each extend in a longitudinal direction that guides the movement of the door in non-contact with and in parallel with the packing, and extend from one end of the longitudinal direction. Propose the door from almost the front side of the opening to a pressure contact position with the packing. Door opening and closing mechanism of the medical device for washing and disinfecting apparatus characterized by inclined portions which are formed. 2. The wire according to claim 1, wherein the drive unit has a wire or a chain, one end of which is connected to the door and which is led out in the moving direction of the door, and a hoisting means for pulling the wire or the chain. A door opening / closing mechanism for a cleaning / disinfecting apparatus for medical equipment, which is characterized by: 3. The wire or chain unwound from the hoisting means according to claim 2, is connected to the door through a guide pulley arranged in the moving direction of the door, and this guide pulley is attached to the door by a spring. A door opening / closing mechanism for a cleaning / disinfecting apparatus for medical equipment, which is urged forward. 4. The cleaning / disinfecting apparatus for medical device according to claim 2, wherein both ends of the wire or the chain are connected to the door from the hoisting means through both ends of the reciprocating movement of the door. Device door opening / closing mechanism.