CN105597216B - Liquid diverter with reversible flow direction - Google Patents

Abstract

The liquid diverter of flow direction can be inverted, it has one section of tube body, the front end of tube body is connected with a coronal body, medial surface, the lateral surface of coronal body are smooth curved surface, the outlet of tube body front end is opposite with the medial surface of coronal body, and there are the channels for liquid communication between the front end of tube body and its two sides of front end and the medial surface of coronal body.When liquid diverter provided by the present invention conveying liquid, input tube body liquid flowed out by front end after, by the blocking of coronal body, guidance, the flow direction of liquid can take a turn for the worse.It is when the external film of application is closed and used in functional treatment of the lung device to realize cardiopulmonary substitution, after being inserted into artery as arterial duct, the blood flow flow direction that may make the blood projected into artery flow direction to project with left ventricle is consistent, to break the limitation of " equalization point ", the forward direction resistance for even reducing heart is not increased.

Description

The liquid diverter of flow direction can be inverted

Technical field

The present invention relates to medical equipment technical fields, and in particular to a kind of liquid steering that liquid Flow reverse may be implementedDevice.

Background technique

For the patient of cardiopulmonary failure, current medical technology can close lung (ECMO) device using external film to realize the heartThe function of lung substitution.It usually requires to dispose in aorta and central vein in implementation process to draw blood into thicker conduit.VeinConduit draws the blood in vein, and blood closes lung channel arterial duct by external film after kinetic pump and oxygenation membrane again and squeezes into again activelyIn arteries and veins.Above-mentioned process the problem is that: in aorta, the blood flow and external film that heart pumps out close the blood flow meeting that lung is squeezed intoOpposite flowing causes patient to be formed at a certain position (between left heart valve and arterial duct opening) of aorta so-called " flatWeigh point ", which supplies blood, the internal organs at position of the equalization point far from heart by heart close to the blood supply of cardia internal organsBlood is supplied by ECMO.The blood flow that ECMO is projected in aorta is towards aorta petal, so that increasing before left ventricle to resistance, the heartFlesh, which must increase contractile function, to project the blood flow in heart, be unfavorable for the recovery of cardiac function；If cardiac function is extremelyThe kinetic energy that weak or ECMO projects blood is excessive, is easy so that blood flow can not project in heart, or even form blood in intra-ventricleBolt causes treatment to fail.

Summary of the invention

The purpose of the present invention is to provide the liquid diverters that one kind can invert flow direction, convey liquid by the liquid diverterWhen, the liquid flow direction flowed out by tube body front end can be reversed.

To achieve the above object, the present invention uses following scheme: can invert the liquid diverter of flow direction, it has one section of pipeBody, the front end of tube body are connected with a coronal body, and medial surface, the lateral surface of coronal body are smooth curved surface, and tube body front end goes outIt is mouthful opposite with the medial surface of coronal body, and between the front end of tube body and its two sides of front end and the medial surface of coronal body there areFor the channel of liquid communication.

By above scheme as it can be seen that inputting the liquid of tube body by preceding when liquid diverter provided by the present invention conveys liquidAfter the outflow of end, by the blocking of coronal body, guidance, the flow direction of liquid can take a turn for the worse.It closes lung device in the external film of application and comesIt realizes in the functional treatment of cardiopulmonary substitution when using, after being inserted into artery as arterial duct, may make from arterial duct to arteryThe blood flow flow direction that the blood flow direction of middle injection is projected with left ventricle is consistent, to break the limitation of " equalization point ", does not increase evenReduce the forward direction resistance of heart.

Structure of the invention rationally, reliable performance, its application range is wider, be especially suitable for using external film close lung device comeIt realizes in the treatment of cardiopulmonary substitution and is used as arterial duct.

Detailed description of the invention

Fig. 1 is the structural schematic diagram and use state diagram of the embodiment of the present invention one；

Fig. 2 is the portion the D enlarged drawing of Fig. 1；

Fig. 3 is the structural schematic diagram of the embodiment of the present invention two.

Specific embodiment

With reference to embodiments and attached drawing further illustrates the present invention.

Referring to Fig. 1

The liquid diverter provided by the invention for inverting flow direction, it has one section of tube body 1, and the front end of tube body 1 is connected withOne coronal body 2, medial surface, the lateral surface of coronal body 2 are smooth curved surface, the outlet and the inside of coronal body 2 of 1 front end of tube bodyFace is opposite, and there are for the logical of liquid communication between the front end of tube body 1 and its two sides of front end and the medial surface of coronal body 2Road 5.

It is more smooth when to make liquid reversal of direction of flow, in the present embodiment, coronal 2 medial surface of body and 1 front end exit of tube bodyBaffle 2a with a protrusion on the position of alignment, the middle part of baffle 2a is in gradually crowned.

To make the substantially uniform-diameter of the outer diameter of coronal body 2 and tube body 1, in the present embodiment, the front end of tube body 1 is inShape is gradually tapered up, the lower part of coronal body 2 is on the outside of the front end of tube body, between the front end of tube body 1 and the medial surface of coronal body 2Several dowels 3 connect, and have the gap passed through for liquid between each dowel 3.

Referring to Fig. 1, Fig. 2

For the operation convenient for this liquid diverter when being placed in into artery, in the present embodiment, the middle part of coronal body is equipped withA half-duplex channel of its medial and lateral is penetrated through, which is the direction one-way conduction along coronal external side to inside.This implementationIn example, the specific structure of half-duplex channel is that it has a conduit 6, and conduit 6 penetrates through coronal body 2, is hinged on the inner wall of conduit 6One baffle 7 is equipped with spring 8 between the downside of baffle 7 and the inner wall of conduit 6.In addition, the baffle 7 in conduit 6 can also be by a check valveSubstitution.When in conduit 6 by having object to pass through under upper, baffle 7 can be open, and conduit 6 is connected.

Referring to Fig. 3

In the present embodiment, the front end of tube body 1 is in shape is gradually tapered up, and the lower part of coronal body 2 is outside the front end of tube bodySide is connected between the front end of tube body 1 and the medial surface of coronal body 2 by connecting band 9, is provided in connecting band 9 several logical for liquidThe through-hole 9a crossed.

In conjunction with Fig. 1, Fig. 2 as it can be seen that liquid diverter provided by the invention closes lung device in the external film of application to realize cardiopulmonaryIn use, it needs to be placed in artery 4 as arterial duct in the functional treatment of substitution.When placing this liquid diverter,So that guiding steel wire is entered conduit 6 and open baffle 7, is led after it is penetrated from conduit 6 to coronal body 2, then by guiding steel wireDraw, this liquid diverter can be put into artery；After the completion of placement, guiding steel wire is extracted out from the rear end of tube body 1, baffle7 close under the action of spring 8, can prevent blood flow from bringing out before coronal body.

Flow direction variation when this liquid diverter conveying blood is illustrated in Fig. 1, is flowed into the blood in conduit 1 by arrowHead A indicates that the blood projected as this liquid diverter is flowed to as shown in arrow C, and the flow direction of the blood flow projected by left ventricle is by arrowShown in head B.As it can be seen that after this liquid diverter is inserted into artery 4 as arterial duct, after the blood of input tube body 1 is flowed out by front end,By the blocking of coronal body 2, guidance, the flow direction of blood can take a turn for the worse, so that the flow direction of the blood exported into arteryIt is consistent with the flow direction of blood flow that left ventricle projects, to break the limitation of " equalization point ", do not increase the forward direction for even reducing heartResistance.

Claims (3)

1. the liquid diverter of flow direction can be inverted, it has one section of tube body, and the front end of tube body is connected with a coronal body, coronal bodyMedial surface, lateral surface are smooth curved surface, and the outlet of tube body front end is opposite with the medial surface of coronal body, it is characterised in that: pipeThere are the channels for liquid communication between the front end of body and its two sides of front end and the medial surface of coronal body；Coronal internal sideBaffle with a protrusion on the position that face is aligned with tube body front end exit, the middle part of the baffle is in gradually crowned；HatThe middle part of shape body is equipped with a half-duplex channel for penetrating through its medial and lateral, which has a conduit, and conduit penetrates through coronal body,It is hinged with a baffle on the inner wall of conduit, spring is equipped between the downside of baffle and the inner wall of conduit.

2. the liquid diverter according to claim 1 for inverting flow direction, it is characterised in that: the front end of tube body is in graduallyContraction-like, the lower part of coronal body is on the outside of the front end of tube body, if involvement between the front end of tube body and the medial surface of coronal bodyMuscle connection is connect, there is the gap passed through for liquid between each dowel.

3. the liquid diverter according to claim 1 for inverting flow direction, it is characterised in that: the front end of tube body is in graduallyContraction-like, the lower part of coronal body passes through company on the outside of the front end of tube body between the front end of tube body and the medial surface of coronal bodyTape splicing connects, and is provided with several through-holes passed through for liquid in connecting band.