RU2275939C1 - End piece for sucking-off blood - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device has tubular body having end head member for sucking blood. The head member has central opening and radial slits. A tube is coaxially arranged in the device body. Ring-shaped canal is available between the internal and external tube surface. Anticoagulant is supplied via the internal tube. The internal ring-shaped canal serves for sucking-off blood. Hole connected to the ring-shaped canal is available on the device body in its middle part. Plug is mounted on end face opposite to sucking head. The plug has two connecting pipes on its external part and one connecting pipe on the internal part. The latter is connected to tube for supplying anticoagulant and to one of the external connecting pipes. The second external connecting pipe is connected to internal cavity of the plug that communicates in its turn with the ring-shaped canal.

EFFECT: wide range of functional applications.

3 cl, 3 dwg

Description

The technical field to which the invention relates.

The invention relates to medical equipment, more specifically, can be used in blood aspirators used during surgery.

The prior art.

The process of collecting blood during surgery is relatively expensive, since the entire suction system, including the tip, is disposable. In addition, in most systems, blood stabilization is carried out by supplying a tube with an anticoagulant to the entrance to the tip, because of which unstabilized blood flowing through the tip can clot and urgent replacement of the tip during surgery is required, which is undesirable.

An attempt to reduce the path length at the tip of unstabilized blood was proposed in US Pat.

In the patent of Russia No. 2077891, the anticoagulant is supplied to the tip head by placing the blood drainage tube coaxially relative to the inner tubular cavity of the tip body. At the same time, the anticoagulant enters the head through the annular channel, however, this design also has its drawback - there is no traditional way to control blood suction by the presence of a surgeon on the suction cup body, if necessary, blocked by the finger of the surgeon (the anticoagulant flows through the annular channel). And besides, the question of how the supply of the anticoagulant and the suction of blood from the tip body are structurally not resolved.

The invention is aimed at eliminating the above disadvantages.

SUMMARY OF THE INVENTION The tip for suctioning blood contains a tubular body with an end head for suctioning blood, having a Central hole and radial side slots, and also located inside the body of the coaxial tube. According to the invention, the anticoagulant enters through the inner tube, and the annular channel inside the body serves to suck blood. At the same time, a hole is made on the body in the middle part of its length, and a plug with two fittings from the outer end and one from the inside, which is connected to the anticoagulant supply tube and one of the external fittings, is installed on the end opposite the suction head, the second external fitting is connected with an internal cavity of the plug, and the latter in turn communicates with the annular channel.

Description of the drawing.

The invention and the possibility of achieving a technical result is illustrated by the drawing. Figure 1 shows a longitudinal section of a tip for suctioning blood. In Fig.2 and 3 - options for the design of the stub intended for the supply of anticoagulant and blood drainage from the tip.

An example of a specific implementation of the invention.

The tip is a tubular body 1 and a tube 2 located coaxially inside the body. Between the inner wall of the body 1 and the outer surface of the tube 2 there is an annular channel 3. At the end of the body 1 there is an end head 4 for suctioning blood, having a central hole and radical slots. A plug 5 is installed at the end of the opposite suction head 4 with two fittings 6, 7 from the outer end and one from the inner 8, which is connected to the anticoagulant supply tube and a channel with one of the external fittings, the second external fitting is connected to the inner cavity of the plug 10, and the last in turn connected to the annular channel. On the housing 1 in the middle part of its length, a hole 9 is made connected to the annular channel 3.

With a view to the possible use of tips for blood suction produced by the industry, two design options are proposed for the plug 5. In one, the bleed nipple is located on the side of the plug by lengthening the internal cavity, and in the other, the internal cavity 10 has a diametrical extension in the region of the internal end of the plug

The operation of the device.

During suction, a vacuum is created inside the housing 1, which ensures blood flow into the head 4 and through the annular channel its movement through the cavity 10 to the nozzle 6. At the time of suction of blood through the nozzle 7, 8 and the tube 2, the anticoagulant enters the head 4, thus, ring channel 3 flows stabilized blood. Using the hole 9, the surgeon during suction adjusts the amount of suction by changing the amount of vacuum by passing air through the hole 9.

Information sources

1. US patent No. 4547186, CL. A 61 M 1/00.

2. Patent of Russia No. 2077891, cl. A 61 M 1/00.

Claims (3)

1. The tip for suctioning blood contains a tubular body with an end head for suctioning blood, having a Central hole and radial slots located coaxially inside the body of the tube and the annular channel located between the inner wall of the body and the outer surface of the tube, characterized in that the anticoagulant enters through the inner tube, and the annular channel inside the body serves to suck blood, on the body in the middle part of its length a hole is made connected to the annular channel, and at the end opposite to ovke suction installed plug with two spigots with the outer part and one from the inside, which is connected with a tube for supplying an anticoagulant and a channel with one of the outer nozzles, the second outer nozzle connected channel with the interior of the plug, and the latter in turn communicates with the annular channel. 2. The tip according to claim 1, characterized in that the inner cavity has a diametrical expansion in the region of the inner end of the stub. 3. The tip according to claim 1, characterized in that the bleed fitting is located on the side of the plug by lengthening the internal cavity.

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