WO2023036336A1

WO2023036336A1 - Three-way tube connector and high-pressure injector set having three-way tube connector

Info

Publication number: WO2023036336A1
Application number: PCT/CN2022/118447
Authority: WO
Inventors: 堀信一; 堀笃史; 五十岚光夫; 五十岚亮莱昂纳多; 宫田智治
Original assignee: 临床支持有限公司; 科斯米克M.E.公司; 阿波罗Rt有限公司
Priority date: 2021-09-13
Filing date: 2022-09-13
Publication date: 2023-03-16
Also published as: CN215780476U

Abstract

The present utility model relates to a three-way tube connector and a high-pressure injector set having the three-way tube connector. The three-way tube connector comprises: a main body having a chamber formed therein, a first inlet and a second inlet disposed at a base end of the main body, and an outlet disposed at a head end of the main body, wherein the central axis of the first inlet and the central axis of the second inlet are not coplanar. The structure of the present utility model is simple, and allows for two liquids to be fully mixed to form a mixed liquid having a uniform concentration.

Description

A three-way pipeline and a high-pressure injector kit with the three-way pipeline

technical field

The utility model relates to the technical field of medical devices, in particular to a three-way pipeline and a high-pressure injector set provided with the three-way pipeline.

Background technique

Contrast agent is one of the most commonly used drugs in interventional radiology operations. It is mainly injected into the human body through a high-pressure contrast syringe to display blood vessels and body cavities and improve the accuracy of diagnosis. When injecting contrast medium, sometimes different concentrations of contrast medium are required. When the contrast medium and normal saline are injected and mixed at the same time, insufficient mixing will occur and the contrast effect will be poor.

There is also a specially designed dual-barrel contrast agent injection device equipped with two syringes. When dual syringes are used for simultaneous injection, one syringe is filled with contrast medium, and the other is filled with physiological saline. For example, through a three-way pipeline The three-way connector connects the two syringes so that the two liquids are fully mixed.

However, the current tee pipeline products have the following problems:

When the two fluids meet in the three-way pipeline, the physiological saline and the contrast agent cannot be fully mixed, forming a situation where each side of the pipeline is occupied, resulting in the contrast agent that can be developed under X-ray and the normal saline that cannot be developed occupying the blood vessel respectively Part of the problem is that the outline of blood vessels cannot be fully developed, and the imaging effect is not good or even fails.

Utility model content

Problems to be solved by the utility model:

In view of the above problems, the purpose of this utility model is to provide a three-way pipeline that can fully mix the two liquids to form a contrast agent of required concentration and a high-pressure syringe kit equipped with the three-way pipeline.

Technical means to solve the problem:

In order to solve the above problems, the utility model provides a three-way pipeline, comprising: a main body with a cavity formed inside; a first inlet and a second inlet arranged at the base end of the main body; and a tip arranged at the main body The outlet at the end; the central axis of the first inlet and the central axis of the second inlet are not coplanar.

According to the utility model, the two streams of liquid can efficiently form a vortex in the chamber, so as to be fully mixed into a mixed liquid with uniform concentration.

Alternatively, in the present invention, the first inlet and the second inlet are symmetrically distributed around the central axis of the outlet.

It may also be that, in the present invention, the base end of the main body is formed in a cylindrical shape; the first inlet and the second inlet are arranged at the base end along a tangential direction of the base end. By means of this, it is possible to prevent the two streams of liquid from the two inlets from colliding with each other, ensuring that the flow rates of the two streams of liquid are not affected.

It may also be that, in the present utility model, the three-way pipeline is in a Y-shaped structure.

Alternatively, in the present invention, the angle between the first inlet and the second inlet is 60°.

Another aspect of the present utility model is a high-pressure injector kit, including: a double-barrel contrast medium injection device; the three-way pipeline as described above; a first injector connected by a connecting tube to the first inlet of the three-way pipeline; The second inlet communicates with the second injector.

Utility model effects:

The utility model has a simple structure and can fully mix two liquids to form a mixed liquid with uniform concentration.

Description of drawings

Fig. 1 is a perspective view of a three-way pipeline according to an embodiment of the present invention;

Fig. 2 is the structural representation of tee pipeline shown in Fig. 1, (a) is the front view of tee pipeline, (b) is the side view of tee pipeline;

Fig. 3 is the A-A direction sectional view of tee pipeline shown in (a) among Fig. 2;

Fig. 4 is a B-B step sectional view of the three-way pipeline shown in Fig. 3;

Fig. 5 is a figure showing the liquid flow direction in the three-way pipeline;

Fig. 6 is a diagram showing a high-pressure syringe kit equipped with a three-way pipeline according to an embodiment of the present invention;

Symbol Description:

10. Tee pipeline; 1. First inlet; L1, central axis; 2. Second inlet; L2, central axis; 3. Main body; 4. Outlet; L4, central axis; 11. First connecting pipe; 12 , the first syringe; 21, the second connecting pipe; 22, the second syringe; 41, the extension pipeline; 42, the interface.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and the following embodiments. It should be understood that the accompanying drawings and the following embodiments are only used to illustrate the present utility model, rather than limit the present utility model.

Disclosed herein is a three-way pipeline capable of fully mixing two streams of liquid to form a contrast medium of required concentration. Fig. 1 is a perspective view of a three-way pipeline 10 according to an embodiment of the present invention.

The three-way pipeline 10 is used in the syringe kit, and is mainly used for inputting two different liquids such as contrast medium and physiological saline to mix them, and then discharge the mixed contrast medium. As shown in FIG. 1 , the three-way pipeline 10 is formed in a substantially Y-shape and mainly includes a first inlet 1 , a second inlet 2 , a main body 3 and an outlet 4 .

The main body 3 is formed in a substantially columnar shape, and a chamber as a premix chamber is formed inside it. Specifically, the main body 3 includes a substantially cylindrical base end and a substantially conical tip end, and a first inlet 1 and a second inlet 2 are arranged on the top of the base end, and on the first inlet 1 and the second inlet 2 A first connecting pipe 11 and a second connecting pipe 21 are respectively provided. The tip end of the main body 3 is formed to gradually decrease in diameter as it moves away from the base end, and includes a large diameter portion connected to the base end and a small diameter portion located on the opposite side of the large diameter portion across an inclined side surface. An outlet 4 is arranged on the outlet 4, and an extension pipeline 41 is arranged on the outlet 4.

The first inlet 1 and the second inlet 2 are two inlets of the three-way pipeline 10, which are mainly used to introduce contrast medium and physiological saline into the chamber, for example, the first connecting tube 11 and the The second connecting tube 12 inserted into the second inlet 2 connects two syringes provided on a dual-barrel contrast medium injection device. The outlet 4 is the liquid outlet of the three-way pipeline 10, the central axis L4 of which coincides with the central axis of the main body 3, and is mainly used to discharge the contrast agent mixed in the chamber through the connected pipeline, for example, it can be extended through the pipeline 41 Connecting microcatheters or connecting scalp needles inserted into the patient, etc.

FIG. 2 is a schematic structural view of the three-way pipeline 10 , wherein (a) is a front view of the three-way pipeline 10 , and (b) is a side view of the three-way pipeline 10 .

On the three-way pipeline 10 , viewed from a side view, the first inlet 1 and the second inlet 2 are arranged at the base end of the main body 3 in a manner of being staggered from each other. Specifically, as shown in (a) and (b) in Fig. 2, the central axis L1 of the first inlet 1 and the central axis L2 of the second inlet 2 are respectively located on both sides of the plane passing through the central axis L4 of the outlet 4, and An included angle is formed between the first inlet 1 and the second inlet 2 , in other words, the first inlet 1 and the second inlet 2 are symmetrically distributed around the central axis L4 of the outlet 4 in a form that is not coplanar with each other. As a result, the contrast medium and the physiological saline flowing into the main body 3 respectively from the first inlet 1 and the second inlet 2 can form a vortex in the chamber, thereby performing efficient mixing by the vortex.

In the present invention, as long as the central axis L1 of the first inlet 1 and the central axis L2 of the second inlet 2 are not coplanar with each other, a vortex can be formed in the chamber. Increase the vortex as much as possible without changing the flow rate.

FIG. 3 is a cross-sectional view of the three-way pipeline 10 shown in (a) of FIG. 2 along the direction of A-A. As shown in Figure 3, viewed from the A-A direction, the central axis L1 and the central axis L2 are symmetrical to the central axis of the main body 3 (that is, the central axis L4 of the outlet 4), and are equally spaced perpendicular to the main body with respect to the central axis L4 The same root diameter of the circular section of 3. Moreover, the circular port section of the first inlet 1 and the second inlet 2 is roughly inscribed with the circular section of the main body 3. In other words, as shown in (b) in FIG. The tangent direction setting for the base end of the Thus, the first inlet 1 and the second inlet 2 form a continuous surface with the inner wall of the main body 3, and the contrast agent and physiological saline can be respectively injected into the chamber along the tangential direction, that is, along the inner wall of the main body 3, thereby enabling The two liquids do not collide with each other and form a stronger vortex, so that they can be mixed more effectively.

FIG. 4 is a stepped sectional view along the B-B direction of the three-way pipeline 10 shown in FIG. 3 . As shown in Figure 4, in this embodiment, the included angle between the first inlet 1 and the second inlet 2 may be 60°, but it is not limited thereto, the first inlet 1 and the second inlet 2 may also form, for example, 180° and other angles.

FIG. 5 is a diagram showing the direction of liquid flow in the three-way line 10 . As shown in Figure 5, since the first inlet 1 and the second inlet 2 are arranged along the tangential direction of the base end of the main body 3, and the axes of the two are not in the same plane, the flow in from the first inlet 1 and the second inlet 2 The contrast agent and saline no longer flow to the junction as in the ordinary three-way pipeline, but flow into the chamber from the first inlet 1 and the second inlet 2 along the side wall of the main body 3, forming a spiral in the chamber. The vortex produces a stirring effect, avoiding the collision between the contrast medium and the normal saline. The two streams of liquid flow toward the outlet 4 along the inclined side of the tip while stirring and mixing in the vortex, and the fully mixed contrast medium is discharged from the outlet 4 .

According to the above structure, the three-way pipeline 10 of the present invention can prevent the contrast agent and saline from the two inlets from colliding with each other, ensuring that the flow velocity of the two is not affected. The two streams of liquid can flow into the chamber of the three-way pipeline 10 respectively at the required flow rate, and can efficiently form a vortex in the chamber, so as to fully mix into the contrast agent of the required concentration. This well-mixed contrast agent of specified concentration helps to improve the contrast effect.

In addition, the utility model also discloses a high-pressure injector kit equipped with the above-mentioned three-way pipeline 10, which includes a double-barreled contrast agent injection device, the above-mentioned three-way pipeline 10, the first injector 12, the second injector 22 and each connecting line. FIG. 6 shows a high pressure syringe kit provided with a tee line 10 . As shown in Figure 6, in the high-pressure syringe kit, the first inlet 1 of the three-way pipeline 10 is connected to the first syringe 12 that has sucked the contrast medium through the first connecting tube 11, and the second inlet 2 is connected to the sucking contrast agent through the second connecting tube 21. The second syringe 22 of physiological saline is supplied, and the outlet 4 is connected to a microcatheter or a scalp needle through an extension pipeline 41 and an interface 42. Here, the first syringe 12 is set on one side of the double-barrel contrast medium injection device, and its rubber plug is connected to the push rod on this side of the double-barrel contrast medium injection device, and the second syringe 22 is set on the other side of the double-barrel contrast medium injection device. side, and its rubber plug is connected to the push rod on the other side of the dual-barrel contrast medium injection device. The double-barreled contrast agent injection device includes a servo motor and a screw rod respectively, and is driven by a control system to convert the rotation of the servo motor into linear motion, thereby pushing forward the respective connected push rods. Like this, under the control of the control system, the two sides of the dual-barrel contrast medium injection device respectively push the connected push rods at a specified speed, so that the first syringe 12 and the second syringe 22 flow to the three-way tube at the required flow rate respectively. Contrast agent and saline are injected into the channel 10, and the contrast agent and saline are fully mixed in the three-way pipeline 10 by vortex to form a contrast agent with uniform concentration, and then injected into the patient's body through the outlet 4 through the microcatheter and the injection needle.

The contrast agent is used as an example to describe above, but the present invention is not limited to mixing contrast agents, and can also be used for mixing other liquids.

The above specific embodiments have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. It should be understood that the above is only a specific embodiment of the present utility model, and is not limited to the protection scope of the present utility model , without departing from the purpose of the basic features of the utility model, the utility model can be embodied in various forms, so the implementation form in the utility model is for illustration rather than limitation, because the scope of the utility model is defined by the claims All changes that are not limited by the description, and fall within the range defined by the claims, or the range equivalent to the range defined by them, should be understood as being included in the claims. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall fall within the protection scope of the present utility model.

Claims

A three-way pipeline, characterized in that,

include:

a body having a cavity formed therein;

a first inlet and a second inlet provided at the base end of the body; and

an outlet provided at the tip of the body;

The central axis of the first inlet and the central axis of the second inlet are not coplanar.
The tee pipeline according to claim 1, characterized in that,

The first inlet and the second inlet are symmetrically distributed around the central axis of the outlet.
The tee pipeline according to claim 2, characterized in that,

The base end of the main body is formed into a cylindrical shape;

The first inlet and the second inlet are arranged at the base end along a tangential direction of the base end.
The tee pipeline according to claim 3, characterized in that,

The three-way pipeline has a Y-shaped structure.
The tee pipeline according to claim 4, characterized in that,

The included angle between the first inlet and the second inlet is 60°.
A high-pressure syringe kit, characterized in that,

include:

Dual-barrel contrast medium injection device;

The tee pipeline according to any one of claims 1 to 5;

a first injector disposed on one side of the dual-barrel contrast agent injection device and communicating with the first inlet of the three-way pipeline through a first connecting tube; and

A second injector disposed on the other side of the dual-barrel contrast medium injection device and communicated with the second inlet of the three-way pipeline through a second connecting pipe.