The present invention relates to an arrangement for an eye shower of the kind which comprises a bottle-like container manufactured from a plastics material and filled at the time of its manufacture with a sterile washing fluid, the neck of which container has at its outer end a seal in which the material is thinner than in the rest of the container, and a shower device so designed as to exhibit, once the seal has been broken, an outlet orifice for washing fluid communicating with the inside of the container and an eye-cup intended during showering of an eye to centralize the outlet orifice relative to the eye and to hold the eye open. An eye shower is intended primarily to be used for washing an eye which has been exposed to, for example, splashes of corrosive liquids, gases, welding spatter or similar.

In such an eye shower of a previously disclosed kind the shower device constitutes a separate unit, which, after the seal has been broken, is applied to the container. The washing fluid is forced out of the container by the application of manual pressure to same. It is clear that a certain degree of skill is required in order to cause the washing fluid to flow out at the appropriate pressure.

The object of the present invention is to eliminate the above-mentioned disadvantages, and this is achieved by the aforementioned shower devices being so designed as to enclose the seal and a part of the neck like a cap, and being executed with two projections so arranged, when the shower device is displaced from an initial position towards a working position by striking with the hand, for example against the eye-cup, as to penetrate the seal and the container, in conjunction with which the projection which penetrates the seal is a pointed tube which provides a communication between the inside of the container and the outlet orifice and the second projection is so arranged as to penetrate the container at a point on the neck at which, when the

container is inverted, a lower fluid pressure is present than at the outlet orifice.

A second, and perhaps more serious disadvantage of previously disclosed eye showers is that these are often kept after having been used. It is, in fact, easy to form the impression that the eye shower is quite simply ready to be used again in the event of a future incident, which may mean that the shower remains unused for a period of between a few days and, in the worst case, a couple of years. The originally sterile fluid becomes contaminated in the intervening period, and in the worst case the eye shower will do more harm than good.

It is evident from one particular characteristic feature of the invention that the second of the aforementioned projections is executed with barb-like devices so arranged as to prevent the shower device from leaving the working position. This affords a simple way of reliably establishing whether or not the eye shower has been used. There can also be no doubt as to whether or not the seal has been broken.

In order to ensure that the washing fluid flows evenly during eye showering, the second projection is executed in accordance with a second particular characteristic of the invention with a groove-like depression for the purpose of facilitating the admission of air into the container.

The invention is described below in more detail with reference to the accompanying drawing, in which Fig. 1 presents in side view a conventional container for the washing fluid and a shower device in accordance with the invention. Fig. 2 is a detailed view from the side of the shower device in its unactivated position relative to the container with its seal. Fig. 3 illustrates in the form of a cross-section the manner in which the washing fluid flows out through the outlet orifice once the seal has been penetrated. Fig. 4 is an oblique view from the side, -and from that side of the shower device in accordance with Fig. 1 which faces the container.

An eye shower in accordance with the present invention comprises a bottle-like container 1 and a shower device 2. The container is preferably of a kind which is ordinarily used for the distribution of physiological saline solution, which is the most common washing fluid in this context. Such a container is manufactured from PVC plastic and is filled and sealed at the time of its manufacture. At the outer end of the neck 3 of the bottle-like container 1 is a seal 4, in which the material is thinner than in the rest of the container.

The shower device 2 comprises a beaker-like cap 5 with an eye-cup 6 arranged at the base of the beaker. The task of this is to centralize an eye which is to be washed in relation to an outlet orifice 7 for the washing fluid which discharges centrally in the eye-cup 6. The outlet orifice 7 communicates with a tubular projection 8 which projects from the base of the beaker 5 axially inwards into same and is executed with a point 9 at its free end.

This point can be produced by cutting the tube 8 at an angle or in some other suitable fashion. At the rim of the beaker 5 is another axially facing projection 10, preferably in the form of an arrow with barbs 11, and executed with a groove-like recess 12, the function of which is explained below.

The cap 5 of the shower device 2 is so arranged in its initial position as to enclose the seal 4 and at least a part of the neck 3. In the initial position the point 9 of the tubular projection 8 is very close to the seal 4 or is in contact with it. The tip of the arrow-shaped projection 10 is similarly situated close to a shoulder 13 on the neck 3 or is in contact with it. The cap is capable of axial displacement from the initial position to a working position in which the point 9 of the projection 8 has penetrated the seal 4 and the point of the projection 10 has penetrated the shoulder 13. The axial displacement from the unactivated position to the working position is best achieved by striking with the hand against the eye-cup 6, the opening of which is covered by a lid 14 when the eye shower is not in use.

When in the working position the outlet orifice 7 communicates with the inside of the container 1. When the container 1 is inverted for the purpose of performing the washing operation, the washing fluid will flow out, in conjunction with which, as will be appreciated from Fig. 3, the washing fluid flows out in an even stream 15. Since there will then be a lower fluid pressure at the point at which the tip of the arrow 10 has penetrated the shoulder 13 on the neck 3, than at the outlet orifice 7, air will flow in and will replace the washing fluid which is flowing out, as shown by an arrow 16 in Fig. 3. The admission of the air is facilitated by the depression 12, which serves to increase the area of the opening.

The barbs 11 on the projection 10 serve the purpose of preventing the shower device 2 from being returned from the working position to the initial position. It is thus a simple matter to establish whether or not the eye shower has been used beforehand. In order to be sure that the shower fluid is entirely sterile, a new eye shower must always be prepared prior to every showering operation.

It is obvious that the invention can be modified in many ways within the scope of the idea of invention, especially with regard to the design of the projections 8 and 10, but also in respect of the design of the cap, which can be adapted to suit every conceivable form of the container 1.