DE7007618U - DEVICE FOR THE PROCESSING OF STERILE WATER FOR MEDICAL PURPOSES. - Google Patents

Description

DR. HUGO WILCKEN ■ DIPL-ING. TH. WILCKEN D - 24 LÜBECK. WIDE STREET 82-84

March 2, 1970 Th.W./Al.

Richard Wolf GmbH, 7134 Knittlingen, Schillerstr. 2

Device for the preparation of sterile water for medical

Purposes

The innovation relates to a device for the treatment of sterile water for medical purposes, in which by a Sterile filter-directed water is collected in an exchangeable irrigator and, if necessary, via one to the irrigator connected water intake set is removed.

In the known devices of this type, the irrigator is normally designed so large that its contents for larger Operations or examinations are sufficient. For examinations of a smaller scope, e.g. for cystoscopy, comes usually with about a liter of sterile water. The remaining water of a larger irrigator must therefore be used after the examination or be drained from the irrigator after a few hours at the latest, because the water is only within Will certainly remain sterile 24 hours after reprocessing. If the water remains in the irrigator vessel for a longer period, so the water is already infested with germs again, so that there is a risk of infection of the subsequently to be treated Patient is given. This is also the case if the residual water was drained off shortly beforehand.

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You can easily handle the treatment of sterile water, but you have to save and forward the Water to the patient, high demands are made on sterility, otherwise infections from non-sterile Water can occur. This means that all parts of the device that may be contaminated by germs, such as the irrigator vessel, Hose connections, etc., must be sterilized each time the device is used again.

The task of the innovation consists in the creation of a preliminary; direction for the preparation of sterile water in an essential j [Licher proportion of otherwise necessary work be avoided for sterilization. By choosing an irrigator that is cheap to produce, the risk of germs can also be largely eliminated, while a properly and reliably functioning control system for filling or refilling the irrigator with sterile water is to be proposed.

To solve this problem, the aforementioned device is designed according to the innovation so that the one-time Use designed irrigator is designed as a sterilized bag made of plastic film. This bag is each with one upper and lower nozzle for connection to the sterile filter leading pipe and provided on a hose leading to the take-off set.

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The irrigator can essentially consist of two halves of the film, which are glued or thermoplastically welded at the edge area to form seams. To carry out the A tube can be inserted into the irrigator bag for the filling control!

one end of which extends roughly to the bottom of the irrigator!

i while the other end of the hose running outside is connected to a pressure switch device which regulates the inflow or the subsequent flow of water into the irrigator by actuating, for example, a valve located in the water pipe.

On the other hand, the supply of water to the irrigator can also be regulated by at least one sensor that is directed to the from The filling capacity of the flexible irrigator bag depends on the bag shape appeals to.

Instead of the usual rigid glass irrigator, a cheap plastic bag is used for the one-time use ! Use is intended, so is thrown away after treating a patient. There is no need to sterilize the irrigator, ι because a new sterilized irrigator bag is used when the next patient is examined or operated.

The invention is explained in more detail with reference to an embodiment shown in the accompanying drawing.

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Show it:

Figure 1 schematically shows a side view of the device and

FIG. 2 the irrigator bag with a connected filling control device.

The device consists of a support frame 1, which for example by means of a belt 2 on the ceiling of an operating room or examination room can be hung and the rest Device parts carries. The connected to a water pipe water hose 5 opens into the sterile water filter 4. As is well known, a large-area prefilter and the actual sterile filter can be used as a sterile filter arrangement in combination: nation are used.

A lower filter tube or a tube attachment 5 of the filter 4 is in the upper hose-like connection 6 of the irrigator 7 out, the lower hose connector 8 mxt leading to a not shown and known water removal set Hose 9 is in communication. In the water intake set the usual check valve and preferably a germ barrier is expediently installed.

The irrigator 7 intended for individual use is designed as an exchangeable bag made of plastic film. As already mentioned, this has the advantage that sterilized irrigator bags kept in stock can be used immediately in the direction without their

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Sterilization is required. Bags of this type are also relatively inexpensive to manufacture. The sterilization of the ! the rest of the fixture parts takes place & v? usual way up to now. It can be useful to design the hose 9 as part of the irrigator 7, since the sterilization j

tion of the hose results if it was previously together with the Irrigator bag has already been sterilized.

The irrigator 7 can be made from flexible, seamless tubular film will. On the other hand, there is the possibility of making the bag from 2 halves, as indicated in Figure 2, wherein the bag halves are glued at the edge region or welded thermoplastically to form edge seams 10, 11. Preferably In the area of the upper connection 6, the wide seams are provided with openings or holes 12, 13 through which; Holding means for hanging the bag 7 on the frame 1 or on another part of the device, if such Type of suspension is desired. Usually this is hooking up of the upper bag connector 6 on the filter tube 5 are sufficient to hold the bag securely by clamping.

If the device for sterile water preparation is described in ner way is prepared, water is introduced sterile through the hose 3 and the filter 4 into the irrigator 7 until this has filled to a certain level of, for example, one liter of water, whereupon the water supply to the sterile filter is terminated. The hose 9 is then used if necessary

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Taken from water. If the amount of sterile water available or part of it for examination or surgery of the patienteiji j is sufficient, the irrigator does not need to be refilled. To

When the treatment is carried out, the bag Ί is removed and in due time for the treatment of the next patient

replaced a new sterile irrigator bag.

If the amount of sterile water in the irrigator is not sufficient for a treatment, it must be refilled will. This is expediently done automatically by a control that responds to "a certain degree of filling," which

e.g. by switching a solenoid valve in the water pipe controls the supply of the water to be treated. Such control devices are, inter alia, in utility model no.1994396 described. In addition to the controls described there, there are also controls based on the current weight of the irrigator address, which depends on the respective fill level.

; Another control option is shown in FIG. 1, in which the water supply to the irrigator through at least one against

j the circumference of the bag 7 lying spring-loaded sensor 14 re-! depending on the degree of filling and thus the lateral deflection

of the irrigator bag to a greater or lesser extent by pressure

Side is shifted, so it responds to the bag shape which is dependent on the filling of the flexible irrigator. A sensor rod 15 is connected to a contact 16, electrical in a not shown circuit is located for actuation of said valve in the water pipe.

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Assuming that in the embodiment shown, the irrigator 7 is filled and that its flexible wall is bent far outwards, the contact 16 is open. When the sterile water is withdrawn, the sensor 14 moves and the rod 15 due to the stretching of the irrigator bag further to the left until finally after the irrigator has been emptied up to a lower limit level of the switch 16 for the purpose Closing the circuit for the water valve closes, whereupon the valve is opened by actuating the valve magnet will. As soon as the switch opens again due to the refilling and curvature of the irrigator to the outside, takes place in a known manner the closing of the water valve by dropping the valve magnet. It is understandable that the Sensor device must be designed so that the beginning and end of the water supply to an upper and lower permissible level of the irrigator are matched, apart from this, there is also the possibility of several sensors 14 for the purpose of precise detection of the respective fill level.

Finally, FIG. 2 shows another way of regulating the water supply. Here, a tube 17 is inserted into the irrigator bag 7 and is tightly connected to the seam 11. The lower end of the hose 17a extends approximately to the bottom of the irrigator, while the other end of the hose 17b, which extends outside the bag 7, is connected to a pressure switch device 18. Depending on the water level in the irrigator, the pressure in the hose 17 is influenced due to the prevailing water column. This pressure inside the hose is reduced to the_ ₈ _

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j pressure diaphragms 19 transferred, whereby these a certain Aas-

'learn steering. The control post 2 © sitting on the membrane

then switches the switch 21, mutatis mutandis, for the actuation of; Water valve, as previously in connection with the! direction according to Figure 1 was described.

As he said before Jant, the irrigator pouches are expediently kept in stock, and they are enclosed in a sterile envelope with a tear-open device

is provided. The sterilization of the irrigator bag can

I made it through the wrapping of a sterile one i sizing irradiation is subjected. For use : the irrigator bag then only needs the wrapping through

; Tearing open to be removed.

Claims (1)

ι Ι · * »Ti PATENT LAWYERS DR. HUGO WILCKEN ■ DIPL.-ING. THOMAS WILCKEN D - 24 LÜBECK. WIDE STREET 52-04 March 2, 1970 Th. W./Al. Applicant: Richard VoIf GmbH, 7134 Knittlingen, Schillerstraße 2 Protection claims 1.) Device for the treatment of sterile water for medical Purposes in which water passed through a sterile filter is collected in a replaceable irrigator and used if necessary is removed via a water removal set connected to the irrigator, characterized in that the Irrigator (7) designed for single use is designed as a sterilized bag made of plastic film, 2.) Device according to .Anspruch 1, characterized in that the Irrigator (7) with one upper and one lower nozzle (6, 8) for connection to the filter tube (5) and to one for the removal set leading or belonging hose (9) is provided. 3.) Device according to claims 1 and 2, characterized in that that the irrigator (7) consists essentially of two halves made of plastic film, which at the edge area to form seams (10,11) are thermoplastically welded or glued. - 2 - * UUMdc (0451) 7SIM. Privoti Dr. H. WMw, Co ”. (MSOS) 710 KpWng. TK WIWeW. UH »ck (0451) 251» Bank OMUMnbaak A. C RL UHwcfc. KIo ^ No. »0117 Port« * · *. Homburg 13811? I 4.) gate direction according to claim 3, characterized gekeimeeiehöet * d «8 ί. j in the broad nests (10, 11) of the irritator pouch t * (7) preferably in the area of its upper support f6) Wm & t- ^; breaks or holes (12,13) are provided. ! 5.) Device according to one or more of claims 1 to 4 » characterized in that a hose ί in the irrigator (7)
I (17) is introduced, one end (17 a) of which about to eum Irri- ! gator base is enough, while the other end of the hose (17 b) to a! i ί Pressure switch device (18) is connected, which the influx! or regulates the flow of water into the irrigator by actuating a valve located in the water pipe, for example. 6.) Device according to one or more of claims 1 to 4, I
! characterized in that the supply of water into the Irriga- 'Tor (7) is controlled by at least one sensor (1'), the ; responds to the respective external form of the irrigator, that of the filling state depends on the irrigator. 7.) Device according to claim 6, characterized in that the sensor (H) is mechanically connected to a switch (16) and this depending on the bulge or deflection of the irrigator operated in one direction or the other. 8.) Device according to claims 1 to 7, characterized in that that the irrigator bag is sterile enclosed by a tearable envelope. /;