(57) Abstract:

Usage: in medicine as a dosing edasijoudnutele device and the pump unit. The inventive syringe includes a cylinder with a piston and sleeve, on which there is mounted a nozzle consisting of a housing containing two elements 4 and 5, with projections for engagement with two sealing edges of the valve 12. 2 C. p. F.-ly, 3 ill.

The invention relates to medical engineering, in particular to the syringes used in the dosing and otsasyvauschie-injection devices, and pumping units for disinfection and spraying. Applicable when the disposable syringe is used to treat one person, for example, when the local anesthesia.

Known valve with nozzle located in the housing of the valve device, bushing overlying the channel discharge and suction fittings, with two locking elements in the form of membranes and executed within its projections (1).

The proposed device is different from the known fact that bilateral shutoff valve elements mounted for contact with the inner surface of the ledge with the cavity, and the stand and reliable.

In Fig.1 shows a General view of the nozzle with the pump (syringe) of Fig.2 injection nozzle, a longitudinal section; Fig.3 suction nozzle, a longitudinal section.

The syringe contains multiple actions the valve nozzle 1 (see Fig.1) is connected with the syringe 2 (including disposable). The piston of the syringe is provided with a return mechanism, in particular the return spring 3.

Valve nozzle 1 has a housing consisting of two elements 4 and 5 (see Fig. 2,3). Item 4 contains the channel 6 of the fitting, which is served or is removed, the working environment. To perform the injection in injection embodiment, the working channel 6 enters into the working cavity 7, which surrounds the rod 8 that serves as part of the nipple (see Fig.2). Another item 5 valve nozzle 1 contains capacitive channel 9 to the suction fitting and the socket 10 to the nozzle on the tip of the syringe. Channel 9 is transferred into the cavity 11 of the capacitive channel. Between the elements 4, 5 of the nozzle 1 has a valve 12 which divides the nozzle into two cavities. The flange of the valve 12 is a sealing gasket between the elements 4, 5. The valve 12 is made with two locking elements in the form of a tube with a flange, the ends of which are membrane edges 13 and 14.

Unlike magnet the 12 is not located on the rod 8, and in the tubular cavity of the element 4, which gives the message to channel 6 of the suction nozzle when the suction and closes it when the discharge pressure, the membrane edge 15 of the valve 12 is located on the flange of the capacitive channel 9 injection fitting (see Fig.3), and not inside it (see Fig.2).

The proposed device operates as follows.

As injection nozzles (see Fig.2).

Syringe 2 creates negative pressure in the nozzle 1. The edge 13 of the valve 12 comprises a rod 8, is the nipple and overlaps message to channel 6. This flange 14 of the valve 12 is compressed, providing a link capacitive channel 9 communicated with the suction nozzle through the cavity 11 with the cylinder of the syringe 2. Then the piston 2 displaces dialed the working fluid from the syringe 2. The end face 12 of the valve 12 closes the cavity 11, thus interrupting the communication of the working environment of the syringe 2 and the capacitive channel 9. The resulting pressure unbends edges 13 of the valve 12, providing a flow of liquid into the cavity 7 and out into the channel 6. In subsequent cycles are repeated. The proposed cap allows even a small volume syringe pump practically unlimited volume of liquid without disturbing the integrity and sterility of the system.

As suction is tion, when the vacuum in the syringe 2, the edge 13 of the valve 12 is narrowed, providing a link cavity of the syringe 2 with working channel 6 providing water. And when the displacement of fluid from the syringe 2, the edge 15 Athinas provides communication with the capacitive channel 9 and pouring dialed fluid in a container (not shown conventionally) without breaching system. In further cycles are repeated an unlimited number of times.

1. The SYRINGE containing the cylinder with the piston and sleeve, connected with a nozzle constituting a housing with inlet and the suction fittings, located in it a valve with two locking elements in the form of membranes and executed inside the tabs, one of which is executed with the cavity, wherein one of the valve elements of the valve installed in the housing with contacting with the inner surface of the ledge with the cavity, and the other locking element with the outer surface of the other of the protrusion made of rod.

2. The syringe under item 1, characterized in that the rod-like protrusion is located on the side of the intake fitting and the ledge with the cavity from the suction fitting.

3. The syringe under item 1, characterized in that the rod-like protrusion p is


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