FI70142C - DROPPKAMMARE FOER INFUSIONS- OCH TRANSFUSIONSANORDNING - Google Patents

Description

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(51) Kv.lk.7int.Cl.4 A 61 M 5/14, 1/02 FINLAND —FINLAND (21) Patent application - Patentansfikning 801340 (22) Application date - Ansökningsdag 25.04.80 (EN) (23) Starting date - Giltighetsdag 25.04.80 (41) Become Public - Blivit offentlig 27.10.80

National Board of Patents and Registration Date of display and hearing. - n9 R,

Patent- och registerstyrelsen '' Ansökan utlagd och utl.skriften publicerad zö.u / .öo (32) (33) (31) Pyydetty etuoikeus — Begärd priority 26.0 A. 79

Federal Republic of Germany Förbundsrepubliken Tyskland (DE) G 7912124.7 Verified-Styrkt (71) Transcodan Sven Husted-Andersen, Postfach 1220, 2432 Lensahn,

Federal Republic of Germany Förbundsrepubliken Tyskland (DE) (72) Björn Wenander, Särö, Sweden-Sverige (SE) (74) Oy Koister Ab (54) Drip room for infusion and transfusion equipment1 e -

Drop chamber for infusion and transfusion administration

The invention relates to a drip chamber for infusion and transfusion devices, which is provided with a plug spike comprising a liquid and a ventilation channel, the latter being connected to a hose. The instillation chamber is inserted with a spike into a sterile-sealed liquid bottle through a stopper, a liquid bottle containing an infusion or transfusion solution, which in turn is sterile.

FI patent publication 28 872 discloses an infusion device as mentioned above with a droplet chamber and a cannula connected thereto, as well as an aeration cannula. DE-A-22 06 908 discloses an infusion device with an inlet with a valve for the supply of air or liquid medicament. A substantially similar device is disclosed in U.S. Patent No. 3,993,068. German application DOS-28 34,588, on the other hand, discloses an infusion or transfusion device with an aeration valve provided with a filter.

70142

When administering infusion or transfusion solutions, it may be necessary to provide this solution with additional supplements, which may vary depending on the case. It is also known to store these additives in sterile packaged containers provided with a sterile pierceable stopper. In order to mix these additives with the infusion or transfusion solution, known cannulas are used, both ends of which are provided with injection tips and the central part of which may be provided with a finger plate. For example, the tip of the cannula is inserted through the lid containing the infusion or transfusion solution, then the container is inverted and then the other tip is inserted through the lid of the container containing the additive. The solution may then transfer from one container to another and mix with the substance stored therein. Mixing can be promoted by shaking the container. The disadvantage here is that when separating the containers, it is usually not possible to prevent the cannula from escaping liquid or its residues, which humidify the environment. When the infusion or transfusion is to be given, the lid of the reservoir for this solution must be pierced once more with the injection needle. The lid must therefore be pierced twice, so that liquid can come out of the first injection opening. In addition, there is a risk of contamination of the liquid tank contents. The treatment described is also time consuming and requires skill from the nursing staff.

The object of the invention is to avoid the described drawbacks and to create a device which also facilitates mixing by unfamiliar persons, whereby the risk of liquid leakage or contamination is substantially ruled out. Handling this device should be time-saving.

According to the invention, the task is solved in such a way that the liquid channel of the plug with a ventilation channel is connected to the end of the hose. The stopper of the drip chamber of the invention is inserted through the lid of a container containing an infusion or transfusion solution. Second, insert the spike attached to the hose through the lid of the container containing the additives. Thereafter, by turning one or the other of the containers upside down, the solution used in each case can be passed through the hose to the second container used at that time. If liquids have been stored in glass bottles, the transfer occurs by changing the height of the second 3,70142 bottle relative to the height of the second bottle. In addition, the ventilation cannula must be inserted. If the liquids are in collapsible plastic containers, the liquid can be transferred to another container by squeezing the other container together. The device according to the invention has the main advantage that it is a unitary device used for both transfer and infusion. A closed system has been created. Subsequently, the lid of the infusion container is pierced only once. The risk of contamination of the tank contents is significantly reduced and handling is time-saving. Disconnection of both interconnected tanks is avoided.

According to a further development, the hose may be provided with a closing device, such as a roller press. Thus, the liquid flow to the second tank can be shut off. The closability of the tubing is appropriate so that the tubing can be closed with a roller press during the infusion.

Other details of the invention are explained below by means of an exemplary embodiment shown schematically in the drawing, and in the drawing: Figure 1 shows a device according to the reform and Figure 2 shows an example of use of the device.

The device comprises only a drip chamber 1 formed from the upper part 2 and the lower part 3.

The upper part 2 of the drip chamber is provided with a plug spike 4 comprising a liquid duct 5 and a ventilation duct 6. The liquid duct 5 terminates in the lower part 3 of the drip chamber.

The ventilation duct 6 terminates in the cavity 7. A cavity 7 is connected to the cavity 7, to which a hose 9 is connected. A roller press 10 is pushed onto the hose 9.

Connected to the other end 11 of the hose is the liquid channel 12 of the second plug 13, which is also provided with a ventilation channel 14. The ventilation channel terminates in a bore 15 which opens at 16 to the outside air. A filter 17 is placed in the bore 14.

The bore 15 opening to the outside air can be closed with a plug 18.

Figure 2 shows two bottles suspended in parallel, one I being filled with an infusion or transfusion solution and the other II being mixed with a substance to be mixed, for example drying powder or the like.

4,70142

Both bottles are initially in a normal position, not shown. The plug of the drip chamber 1 is then inserted through the stopper 19 of the bottle I. In addition, a spike 13 is inserted through the stopper 20 of the bottle II.

The bottles can then be compressed from one bottle to another and vice versa by raising or lowering or inverting the bottles, respectively. This is certainly possible if the bottles are compressible. After the transfer of the liquid, the roller press 10 can be closed or opened from time to time. To move the liquid in the glass bottles, the height of the bottles is changed.

For example, if the formulation ready for bottle II is dissolved in the infusion or transfusion solution, the liquid from bottle II is returned to bottle I and the tubing clamp 10 can be closed.

The lower part 3 of the drip chamber may have a foreign matter-retaining filter which retains insoluble crystals, rubber residues or the like. A cable leading to the patient and provided with a roller press 23 is connected to the connection slot 21.