CN201324438Y - Anti-reflux high pressure connecting pipe - Google Patents

Abstract

The utility model relates to an anti-reflux high pressure connecting pipe, which relates to the field of medical consumptive materials, in particular to an anti-reflux connecting pipe which is suitable for extending injection and fusion pipelines during injecting radiography liquid medicine The connecting pipe comprises a needle seat, a guiding tube, a one-way valve, a tapered joint and a sheathing, wherein the one-way valve is located between the needle seat and the tapered joint, and the one-way valve, the needle seat and the tapered joint are connected into a whole in series through the guiding tube. The high pressure anti-reflux connecting pipe effectively controls the anti-reflex of blood and liquid medicine and protects the safety of patients, and the joint is more effectively prevented from being polluted through designing the sheathing to be longer than the tapered joint, the safety is strong, the structure is simple, and the connecting pipe can satisfy the requirements of hospital infection.

Description

A kind of anti-adverse current high pressure connection tube

Technical field

This utility model belongs to medical disposable material, and particularly a kind of anti-adverse current high pressure connection tube when being used for clinical radiography medicinal liquid and injecting, prolongs injection, liquid-transport pipe-line dosing.

Background technology

When the radiography medicinal liquid is injected, should guarantee that dose is accurate, guarantee patient safety again, answer this requirement and living high pressure injector, as the auxiliary facilities in the Medical Image System, be widely used in various angiographies, CT enhancing radiography scanning and the MR enhanced ct scans.The dosing connection tube is used to connect syringe and entry needle, is the important accessory of high pressure injector.At present in use also there are some problems in the dosing connection tube that uses: 1. syringe and connection tube seam, sometimes because there is potential safety hazard in some uncertain factor disengagement; 2. inject blood backflow pollution syringe when finishing; 3. the cone joint that links to each other with entry needle exposes protective sleeve, and is in operating process, very easily contaminated.

The utility model content

The purpose of this utility model is to solve the deficiency that above-mentioned prior art exists, and a kind of anti-adverse current high pressure connection tube is provided.

This utility model is realized in the following manner:

Anti-adverse current high pressure connection tube is made up of needle stand, conduit, check valve, cone joint and protective sleeve.

The needle stand head adopts helical design, and with the screw thread overstriking, staples together with syringe, so just needle stand and syringe tightly can be connected together by spiral.

Check valve is made up of cathode terminal, nonreturn valve core, anode tap and overcoat, and nonreturn valve core tightly links together by overcoat between cathode terminal and anode tap.Nonreturn valve core is made by rubber or macromolecular material, and diameter is greater than the passage diameter.At the cathode terminal passage negative electrode cross bar is set, anode tap is provided with the anode triangle.Nonreturn valve core is clamped on the same plane of negative electrode cross bar and anode triangle place.When the radiography medicinal liquid was injected, nonreturn valve core became semicircle rugosity to be attached to the both sides of anode triangle under pressure.When injecting end, the nonreturn valve core homing because the nonreturn valve core diameter greater than the passage diameter, forms enclosed cavity, effectively prevents backflow of blood.

Protective sleeve is longer than cone joint slightly, effectively joint is hidden in the protective sleeve, in the process of using, has reduced the chance of cross-contamination, better protection patient like this.

The utility model has the advantages that: high safety, simple in structure.Use this utility model can reduce the chance of pollution, satisfy institute's sense requirement.

Description of drawings

Fig. 1: the structural representation of connection tube

Fig. 2: the one-way valve structures sketch map that is used for this connection tube

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

This utility model is a kind of anti-adverse current high pressure connection tube, is made up ofneedle stand 1,conduit 5,check valve 2,cone joint 4 andprotective sleeve 3.

Needle stand 1 head adopts helical design, and with the screw thread overstriking, staples together with syringe, so just needle stand 1 and syringe tightly can be connected together byspiral.Check valve 2 is made up of cathode terminal 6, nonreturn valve core 8, anode tap 10 and overcoat 11, and nonreturn valve core 8 tightly links together by overcoat 11 between cathode terminal 6 and anode tap 10.Nonreturn valve core 8 is made by rubber or macromolecular material, and diameter is greater than the passage diameter.At cathode terminal 6 passages negative electrode cross bar 7 is set, anode tap 10 is provided with anode triangle 9.Negative electrode cross bar 7 and same plane, anode triangle 9 places are clamped nonreturn valve core 8.When contrast agent bolus, nonreturn valve core 8 becomes semicircle rugosity to be attached to the both sides of anode triangle 9 under pressure.When injecting end, nonreturn valve core 8 homings because nonreturn valve core 8 diameters greater than the passage diameter, form enclosed cavity, effectively prevent backflow of blood.Protective sleeve 3 is longer thancone joint 4 slightly, and joint is hidden in theprotective sleeve 3.

Claims (6)

1. an anti-adverse current high pressure connection tube is made up of needle stand (1), conduit (5), check valve (2), cone joint (4) and protective sleeve (3); It is characterized in that: check valve (2) is positioned between needle stand (1) and the cone joint (4), is cascaded by conduit (5); Protective sleeve (3) is positioned at outside the cone joint (4), and protective sleeve (3) is longer than cone joint (4) slightly.

2. according to the described anti-adverse current high pressure connection tube of claim 1, it is characterized in that having on needle stand (1) head circle to add pinion head.

3. according to the described anti-adverse current high pressure connection tube of claim 1, it is characterized in that: check valve (2) is made up of cathode terminal (6), nonreturn valve core (8), anode tap 10 and overcoat (11); Nonreturn valve core (8) is positioned between cathode terminal (6) and the anode tap (10), links together by overcoat (11).

4. according to the described anti-adverse current high pressure connection tube of claim 3, it is characterized in that: cathode terminal (6) is hollow, and middle across a negative electrode cross bar (7).

5. according to the described anti-adverse current high pressure connection tube of claim 3, it is characterized in that: anode tap (10) is hollow, and is middle across a laminar anode triangle (9).

6. according to claim 4 or 5 described anti-adverse current high pressure connection tubes, it is characterized in that: negative electrode cross bar (7) is consistent with anode triangle (9) width, and in the same plane.

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