CZ301836B6 - Interconnecting device of instrumentation for extracorporeal eliminations - Google Patents

Abstract

The present invention relates to an interconnecting device of instrumentation for elimination of undesired admixtures of blood plasma, said device being formed by a supply tube (5) connecting a primary apparatus (1) with a secondary apparatus (2) and a return tube (6) connecting the secondary apparatus (2) with the primary apparatus (1) whereby for connecting the return tube, said primary apparatus (1) is provided with a standard connecting spike (4) used in infusion sets. The end of the return tube (6) is connected with an inserted elastic sleeve (7) the inner diameter (D) of which enables its tight insertion on the standard connecting spike (4). The inserted elastic sleeve (7) consists of two elastic tube parts (7.1, 7.2) inserted on and connected with each another. The smaller elastic tube part (7.1) is inserted on and connected with the end of the return tube (6) while the bigger elastic tube part (7.2) is inserted on and connected to said smaller elastic tube part (7.1).

Description

Device interconnection devices for extracorporeal elimination

Technical field

The invention relates to an apparatus for extracorporeal elimination of unwanted impurities from blood plasma comprising a lance from a primary to a secondary apparatus and a return tube from a secondary to a primary apparatus, wherein the primary apparatus is equipped with a standard attachment spike used on conventional infusion sets to connect the return tube. you.

BACKGROUND OF THE INVENTION

Apparatus for extracorporeal elimination of unwanted impurities from blood plasma consist of a primary apparatus that separates plasma from the blood and a secondary apparatus that detects unwanted impurities from the blood plasma. The devices are interconnected with a lance for supplying blood plasma from the primary to the secondary apparatus and a return tube to remove the plasma from the secondary apparatus back to the other part of the primary apparatus, where it is again mixed with the other parts of the blood. The inlet tube is equipped with Luer terminals at both ends, which fit both the primary and secondary devices into Luer terminals of the opposite type (these are common so-called "male" and "female" terminals). The return tube is also connected to the secondary apparatus. However, the Luer tip is also located on the opposite side of the return tube, which cannot be fitted to a standard connection spike, which serves as a universal connection to the primary device due to the possibility of connecting the primary device to the infusion. The standard connection spike is connected to the primary instrument by the instrument hose. The problem is solved by cutting the instrument tube before connecting the standard connection spike and inserting the Luer male connector into it. However, in this solution, the sterility of the design is compromised and, in addition, it is labor intensive and consuming, since sterile gloves, masks, disinfectants are consumed and require the use of sterile scissors, which must be sterilized again after use.

It is therefore an object of the present invention to provide an interconnection device that is not expensive to manufacture and substantially facilitates the connection of the return tube to the primary apparatus while avoiding the risk of sterility in the interconnection of these apparatuses.

The essence of the technical solution

The object is achieved by the interconnecting device according to the invention, which is characterized in that the end of the return tube is connected to the inserted elastic sleeve, the inner diameter of which corresponds to a tight fit on a standard connecting spike. This provides a quick and easy connection of the return pipe to the primary device. Since the return tube in this embodiment is supplied in sterile packaging directly from the factory, the connection is completely sterile.

Advantageously, the push-on elastic sleeve comprises two push-on and connected elastic tubular members. The manufacture of this sleeve is thus facilitated since it allows the use of standardly manufactured elastic tubular members for the manufacture of the sleeve.

BRIEF DESCRIPTION OF THE DRAWINGS

The device connection device according to the invention is shown in the attached drawing.

-1 CZ 301836 B6

DETAILED DESCRIPTION OF THE INVENTION

The interconnecting device serves to connect the primary apparatus 1 to the secondary apparatus 2 and consists of a supply tube 5 provided at both ends with a Luer terminal 3, by which the supply tube 5 is connected to both of these apparatuses 2. Further, the interconnection device consists of a return tube 6 provided at one end of the Luer end piece 3, by which this return tube 6 is connected to the secondary apparatus 2. At the opposite end, the return tube 6 is provided with an elastic sleeve

2, made of two elastic tubular members (7.1, 7.2). The smaller elastic tubular member io 7.1 is fitted with the inner diameter and connected to the end of the return tube 6. The smaller elastic tubular member 7.1 is connected to the larger elastic tubular member 7.2, whose inner diameter D is identical to the outer diameter d on the standard connecting spike 4 By pressing the elastic sleeve 7 onto the standard connection spike 4, the elastic sleeve 7 is firmly and tightly connected to the standard connection spike 4, and thus the primary apparatus 1 is perfectly tightly connected to the secondary apparatus 2.

The blood is fed to the primary apparatus 1, where the plasma is separated therefrom and passed through the lance 5 to the secondary apparatus 2, in which the blood plasma is stained undesirable for a month and is guided through the return tube 6 through the elastic sleeve 7 and standard connection spike 4 and an instrument tube 8 into another part of the primary instrument 1, from where it is directed back to the patient.

Claims (2)

PATENT CLAIMS A device interconnecting device for extracorporeal elimination of unwanted impurities from blood plasma, comprising a lance (5) from a primary to a secondary apparatus and a return tube (6) from a secondary to a primary apparatus, the primary apparatus being provided for connecting the return tube (6). a standard connection spike (4) used on infusion sets, characterized in that the end of the return tube (6) is connected by an inserted elastic sleeve (7), the inner diameter (D) of which corresponds to a tight fit on the standard 35 connecting spike (4). Connection device according to claim 1, characterized in that the elastic sleeve (7) pushed in is formed by two elastic tubular members (7.1, 7.2) which are pushed together and connected together.