CN215915941U

CN215915941U - High-pressure radiography injector and accessory

Info

Publication number: CN215915941U
Application number: CN202122208483.2U
Authority: CN
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: Apollo Rt Co ltd; Kosmick ME; Clinical Support Co ltd
Current assignee: Apollo Rt Co ltd; Kosmick ME; Clinical Support Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-03-01
Anticipated expiration: 2031-09-13
Also published as: WO2023036338A1

Abstract

The utility model relates to a high pressure radiography injector and accessories, comprising: a three-way line having a first port, a second port, and a third port; a bottle inserting needle inserted into the liquid medicine bottle; a first connecting tube connecting the bottle inserting needle and the first port; one end of the second connecting pipe is connected with the second port, and the other end of the second connecting pipe is provided with an interface; and an injector comprising a syringe and a plug, the injector being connected to the third port; the first port and the second port are respectively provided with one-way valves arranged in the same direction; and the first connecting pipe and the second connecting pipe are respectively provided with a bubble detection device. The utility model has simple structure, can greatly save the operation time and steps, lighten the labor intensity of users, effectively avoid the risk of misoperation and the risk of pollution caused by the exposure of the contrast agent in the air, and prevent bubbles from entering the human body along with the contrast agent to cause unnecessary damage to patients.

Description

High-pressure radiography injector and accessory

Technical Field

The utility model relates to the technical field of sterile medical instruments, in particular to a high-pressure radiography injector and accessories.

Background

The contrast agent is one of the most commonly used medicines in interventional radiology operation, is mainly injected into a human body through a high-pressure contrast injector and is used for displaying blood vessels, and the diagnosis accuracy is improved.

When the traditional high-pressure radiography injector is used, the syringe of the injector is directly connected with the connecting pipe for use. When the contrast medium in the syringe is insufficient, the extension pipeline needs to be removed, a special medicine sucking device is used for sucking the medicine into the injector from a medicine bottle or a bag type package, then the connection between the medicine sucking device and the injector is disconnected, and then the connecting pipe is connected to the injector again. The sequence of operations is cumbersome during the entire operation and the medicament is exposed to air with the risk of contamination when the inhaler and syringe are disconnected.

On the other hand, when the contrast medium is injected into the human body through the connection tube by the high-pressure contrast syringe, air bubbles may exist in the tube due to the fact that air is not exhausted during medicine suction or air is leaked into the tube when the components are connected, and if the air bubbles enter the human body along with the contrast medium, unnecessary damage may be caused to the human body.

SUMMERY OF THE UTILITY MODEL

Problem that utility model will solve:

in view of the above problems, it is an object of the present invention to provide a high pressure contrast syringe and an attachment for the same, which can continuously extract and inject a contrast medium without repeatedly attaching and detaching the syringe, and which can prevent bubbles from being injected into a human body with the contrast medium.

The technical means for solving the problems are as follows:

to solve the above problems, the present invention provides a high pressure radiography injector and its accessories, including: a three-way line having a first port, a second port, and a third port; a bottle inserting needle inserted into the liquid medicine bottle; a first connecting tube connecting the bottle inserting needle and the first port; one end of the second connecting pipe is connected with the second port, and the other end of the second connecting pipe is provided with an interface; and an injector comprising a syringe and a plug, the injector being connected to the third port; the first port and the second port are respectively provided with one-way valves arranged in the same direction; and the first connecting pipe and the second connecting pipe are respectively provided with a bubble detection device.

According to the utility model, under the combined action of the two one-way valves arranged in the same direction, only one of the two one-way valves can be always ensured to be conducted in any action of the injector, and the automatic control of the liquid medicine in different stages of suction and injection can be realized. Therefore, continuous contrast agent extraction and injection can be carried out in one operation without repeatedly dismounting and mounting the injector from the pipeline, and the risk of misoperation and the risk of pollution caused by exposure of the contrast agent in the air can be avoided. Meanwhile, whether bubbles exist in the pipeline can be detected in real time through a bubble detection device.

In the utility model, the check valve comprises a valve body with openings at two sides, a tip and a flexible valve plate; the centre and the flexible valve plate are arranged inside the valve body; the centre is formed into the taper shape, the middle part of flexible valve block butt in the minor diameter end of centre. Therefore, the one-way valve can realize the conduction in a single direction according to the pressure of the liquid on the two sides.

In the present invention, the flexible valve sheet may be made of a rubber material.

In the present invention, the second connection pipe may be connected to the micro-catheter through the interface.

In the present invention, the third port and the interface may be a female luer connector; the output port of the injector and the input port of the micro-catheter are male luer connectors. The luer connector is convenient to assemble and disassemble, reliable in performance and good in sealing performance, and the whole pipeline of the high-pressure radiography injector and accessories is convenient to assemble and disassemble due to the matched use of the male luer connector and the female luer connector.

In the present invention, the bubble detection means may be an ultrasonic bubble sensor. Thereby, it is possible to detect whether or not air bubbles exist in the piping.

In the utility model, the injector is connected with an injection head controlled by a control system through the rubber plug. Thereby, the work of controlling the injector can be realized through the control system.

In the present invention, when the bubble detecting device detects a bubble, the control system may control the injector head to stop the operation of the injector. Thus, the function of the injector can be stopped when the air bubbles are detected, and the air bubbles are prevented from entering the blood vessels of the human body.

The utility model has the advantages that:

the utility model has simple structure, can greatly save the operation time and steps, lighten the labor intensity of users, effectively avoid the risk of misoperation and the risk of pollution caused by the exposure of the contrast agent in the air, and prevent bubbles from entering the human body along with the contrast agent to cause unnecessary damage to patients.

Drawings

FIG. 1 is a schematic diagram of a high pressure contrast injector and accessories according to one embodiment of the present invention;

FIG. 2 is a schematic diagram of the three-way line of the high pressure contrast injector and accessory of FIG. 1;

FIG. 3 is a schematic view of a check valve in the three-way line of FIG. 2;

description of the symbols:

1. a three-way pipeline; 10. a one-way valve; 100. a valve body; 101. a first valve cover; 102. a second valve cover; 110. a tip; 120. a flexible valve plate; 11. a first port; 12. a second port; 13. a third port; 21. a first connection pipe (first branch); 22. a second connection pipe (second branch); 210. 220, a bubble detection device; 221. an interface (microcatheter interface); 3. inserting a bottle needle; 4. a liquid medicine bottle; 5. an injector; 51. a needle cylinder; 52. a rubber plug; 6. a microcatheter; a. The direction of drug inhalation; B. the direction of medicine discharge.

Detailed Description

The present invention is further described below in conjunction with the following embodiments and the accompanying drawings, it being understood that the drawings and the following embodiments are illustrative of the utility model only and are not limiting thereof.

Disclosed herein are a high-pressure contrast injector and an accessory for the same, which can continuously extract and inject a contrast medium without repeatedly attaching and detaching the injector, and which can prevent bubbles from being injected into a human body with the contrast medium.

Fig. 1 is a schematic diagram of a high pressure contrast injector and accessories according to an embodiment of the utility model. The high-pressure radiography injector and accessories comprise a three-way pipeline 1, a first branch, a second branch, a third branch and components, wherein the first branch, the second branch, the third branch and the components are connected with the three-way pipeline 1, and the components are arranged on the branches. The first branch is constituted by a first connection tube 21, the second branch is constituted by a second connection tube 22, and the third branch may be a third connection tube, not shown, for connecting the three-way tube 1 and a syringe 5, which will be described later.

Specifically, as shown in fig. 1, the high-pressure contrast syringe and the accessories thereof include a three-way tube 1, a first connection tube 21 as a first branch, a second connection tube 22 as a second branch, a vial needle 3, a liquid medicine bottle 4, and a syringe 5.

The three-way line 1 is a flow path connector in high pressure contrast syringes and accessories. Fig. 2 is a schematic structural view of the three-way pipe 1. As shown in fig. 2, the three-way pipe 1 includes a first port 11, a second port 12, and a third port 13. The first port 11 is a side port of the liquid medicine bottle and is connected with the liquid medicine bottle 4 through a first connecting pipe 21 and the bottle inserting needle 3. The second port 12 is a microcatheter side port and is connected to the microcatheter 6 by a second connecting tube 22. The third port 13 is an injector-side port, which may be a female luer having a locking mechanism, and in the present embodiment, the third connection tube is omitted, and the injector 5 is directly connected to the three-way line 1 through the third port 13. Thus, the three-way pipe 1 is formed into a substantially Y-shaped structure that connects the components of the high-pressure contrast syringe and the accessories via three ports.

[ Structure of check valve ]

Check valves 10 are also provided on the first port 11 and the second port 12, respectively. Fig. 3 is a schematic structural view of the check valve 10. As shown in fig. 3, the check valve 10 includes a valve body 100, a tip 110, and a flexible valve sheet 120. The valve body 100 is a housing of a check valve, and includes a first bonnet 101 (i.e., a left bonnet) having a first opening (i.e., a left opening) and a second bonnet 102 (i.e., a right bonnet) having a second opening (i.e., a right opening). A cavity formed by butting the first valve cover and the second valve cover is formed inside the valve body 100, and the center 110 and the flexible valve sheet 120 are disposed in the cavity.

The tip 110 is formed in an umbrella shape and is provided in the first valve cover 101 so as to gradually decrease in diameter from the first opening toward the second opening, in other words, the tip 110 has a large-diameter end, a small-diameter end, and an inclined surface connecting the large-diameter end and the small-diameter end, and is provided in the first valve cover 101 so as to allow the contrast medium to flow from the vicinity of the large-diameter end toward the first opening, and the small-diameter end faces the second opening.

The flexible valve sheet 120 may be a soft rubber sheet that can be deformed by the pressure of the liquid, and the flexible valve sheet 120 is formed to have a larger diameter than the second opening, and is provided such that one surface thereof abuts against the small-diameter end of the center 110 and the other surface thereof covers the second opening.

Therefore, when the pressure on the first opening side is higher than that on the second opening side, i.e. the contrast medium is to flow from the first opening to the second opening, the fluid pressure presses the flexible valve sheet 120 on the second opening, so that the second opening is blocked and the contrast medium cannot flow through. On the contrary, when the pressure at the second opening side is greater than that at the first opening side, that is, the contrast agent is to flow from the second opening to the first opening, the flexible valve plate 120 bends to the tip 110 side to form an umbrella shape under the action of the liquid pressure difference, so that the contrast agent can pass through the gap flowing out from the periphery of the flexible valve plate 120, and the conduction effect is achieved.

In the present embodiment, the two check valves 10 are provided in the same direction in the first port 11 and the second port 12. Specifically, the check valve 10 on the first port 11 is provided with a first opening facing the third port 13 of the three-way pipe 1 and a second opening facing the first connecting pipe 21. The non-return valve 10 on the second port 12 is arranged with a first opening towards the second connecting pipe 22 and a second opening towards the third port 13 of the three-way pipe 1.

As also shown in fig. 1, in the first branch, the vial insertion needle 3 is located at the tip end of the first connection pipe 21, i.e., the end away from the three-way pipe 1. The bottle inserting needle 3 comprises a puncture needle for puncturing the liquid medicine bottle 10 and a base located at the tail end of the puncture needle, and a flow channel for the circulation of the contrast medium is formed in the puncture needle. In addition, the casing is provided with a vent port to prevent a vacuum state from being formed in the liquid medicine bottle 4 when the contrast medium is extracted. The liquid medicine bottle 4 is a container for liquid medicine, and contains contrast medium therein. The bottle inserting needle 1 is inserted into the bottle cap of the liquid medicine bottle 4 through the puncture needle, and the contrast medium in the liquid medicine bottle 4 is introduced into the first connecting pipe 21.

In the second branch, a joint 221 is provided at the tip end of the second connection pipe 22, i.e., at the end remote from the three-way pipe 1. The hub 221 is a female luer connector that is sealingly connected by engagement with a microcatheter 6 formed as a male luer connector at the input port. However, the port 221 is not limited thereto, and may be formed in another structure capable of being hermetically connected to the micro duct 6. The micro-catheter 6 is connected to the patient for delivering the contrast agent flowing out of the second connection tube 22 into the patient.

The third port 13 of the three-way pipe 1 is connected to the syringe 5. The syringe 5 is mainly used to draw a contrast medium from the liquid medicine bottle 4 through the first connection tube 21 and inject the contrast medium into the patient through the second connection tube 22 and the micro catheter 6. In this embodiment, the syringe 5 may include a syringe 51 and a rubber stopper 52. A syringe port (an outlet for an injection) as a liquid outlet is formed at the distal end of the cylinder 51, and in the present embodiment, the syringe port may be formed as a male luer and hermetically connected to a female luer formed at the third port 13 of the three-way pipe 1 by a lock mechanism. The rubber plug 52 can be connected to an injection head (not shown) controlled by the control system, and the piston movement is performed in the syringe 51 by the injection head. The injection head can comprise a servo motor and a screw rod, and the rotation of the servo motor is converted into linear motion under the drive of the control system.

As described above, the three-way pipe 1 is provided with the check valves 10 on the first port 11 and the second port 12 in the same direction. Therefore, as shown in fig. 1 to 3, when the contrast medium in the syringe 5 is used up and it is desired to draw the contrast medium into the syringe 51, for example, the operating rubber plug 52 is retracted and the pressure in the syringe 51 is reduced. At this time, in the check valve 10 on the first port 11, the liquid pressure at the first opening is lower than the liquid pressure at the second opening, so that the flexible valve sheet 120 is bent to an umbrella shape toward the first opening side under the action of the liquid pressure difference, the second opening is conducted, and the contrast medium is sucked into the syringe 5 from the liquid medicine bottle 4 through the first connecting tube 21 and the check valve 10 along the medicine suction direction as shown by an arrow a in fig. 1. In the check valve 10 on the second port 12, since the liquid pressure at the first opening is higher than the liquid pressure at the second opening, the flexible valve sheet 120 closes the second opening under the action of the liquid pressure, and the contrast medium cannot flow therethrough.

On the other hand, when, for example, the syringe 5 contains a contrast medium and an injection to a patient is required, the operating rubber plug 52 advances and the pressure inside the syringe 51 increases. At this time, in the check valve on the first port 11, the liquid pressure at the first opening is higher than the liquid pressure at the second opening, so the flexible valve sheet 120 closes the second opening under the action of the liquid pressure, and the contrast agent cannot flow therethrough. In the check valve 10 on the second port 12, since the liquid pressure at the first opening is lower than the liquid pressure at the second opening, the flexible valve sheet 120 bends to form an umbrella shape toward the first opening under the action of the liquid pressure difference, the second opening is conducted, and the contrast medium is injected into the patient from the injector 5 through the second connecting tube 22 and the micro-catheter 6 along the discharging direction as shown by arrow B in fig. 1.

As described above, in the present invention, when the rubber stopper 52 of the syringe 5 is retracted, the check valve 10 of the first port 11 is opened and the check valve 10 of the second port 12 is closed, so that the contrast medium is sucked into the syringe 5 and the blood of the patient is not sucked into the cylinder. When the plug 52 of the syringe 5 advances, the check valve 10 of the first port 11 is closed and the check valve 10 of the second port 12 is opened, so that the syringe 5 injects the contrast medium into the patient and cannot suck the contrast medium from the liquid medicine bottle. In other words, by the cooperation of the two check valves 10 provided in the same direction to the first port 11 and the second port 12, only one of the two check valves 10 can be always kept in conduction during any one operation of the syringe 5, and thus automatic control of the liquid medicine at different stages of aspiration and injection can be realized.

[ bubble detection ]

In the present embodiment, the first connection pipe 21 and the second connection pipe 22 are further provided with bubble detection means 210 and 220, respectively, for detecting whether or not bubbles exist in the flow path, which may be ultrasonic bubble sensors, for emitting ultrasonic waves into the pipe and receiving feedback echoes, and since the echoes reflected in different media (particularly, liquid and air) are different, it is determined that bubbles flow through the pipe when a change in the echo signal is detected. Specifically, the bubble detection device 210 is provided between the first port 11 and the vial needle 3, and detects whether or not bubbles are contained in the contrast medium flowing through the first connection tube 21. The bubble detecting device 220 is disposed between the second port 12 and the interface 221, and is used for detecting whether the contrast medium flowing through the second connection pipe 22 contains bubbles. When the bubble detecting means 210 and/or the bubble detecting means 220 detects a bubble, a signal is sent to the control system, and the control system stops the operation of the injector head and gives an alarm after receiving the signal. This can stop the function of the syringe 5 when a bubble is detected, thereby preventing the bubble from entering the blood vessel of the human body.

In use, the syringe 5 is first attached to the injection head, and the injection head is operated to suck the contrast medium into the syringe 5 and to remove air. Next, as shown in fig. 1, the liquid medicine bottle 4 is connected to the first port 11 of the three-way tube 1 through the first connection tube 21, the second connection tube 22 is connected to the second port 12, the syringe 5 is directly connected to the third port 13, and the bubble monitoring device is respectively disposed on the first connection tube 21 and the second connection tube 22. After the air in the pipe is removed, the micro duct 6 is connected to the mouthpiece 221 of the second connection pipe 22 and the air in the pipe is also removed. The injector head is then operated to control the injector 5 to inject contrast media into the patient and to control the injector 5 to withdraw contrast media from the vial 4 when the contrast media is exhausted, and so on until the procedure is completed. After the operation is completed, the micro catheter 6, the second connection tube 22, the syringe 5, the liquid medicine bottle 4, the first connection tube 21 and the three-way tube 1 are removed in sequence.

The above description has been given by taking a contrast medium as an example, but the present invention is not limited to the injection of the contrast medium, and may be applied to the injection of other various kinds of medical liquids.

The utility model has the following advantages:

1) continuous contrast agent extraction and injection can be carried out in one operation without repeatedly dismounting and mounting the injector from the pipeline, so that the operation time and steps can be greatly saved, the labor intensity of a user is reduced, and the risk of misoperation can be effectively avoided;

2) the contrast agent is always transferred in the closed pipeline, so that the risk of pollution caused by exposure of the contrast agent in the air can be effectively avoided;

3) through the installation bubble monitoring devices, the injector can be immediately stopped working when bubbles exist in the pipeline, so that the bubbles can be prevented from entering the human body along with the contrast agent and causing unnecessary damage to the human body.

The above embodiments are intended to illustrate and not to limit the scope of the utility model, which is defined by the claims, but rather by the claims, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-pressure radiography injector and accessories thereof are characterized in that,

the method comprises the following steps:

a three-way line having a first port, a second port, and a third port;

a bottle inserting needle inserted into the liquid medicine bottle;

a first connecting tube connecting the bottle inserting needle and the first port;

one end of the second connecting pipe is connected with the second port, and the other end of the second connecting pipe is provided with an interface; and

the syringe comprises a syringe barrel and a rubber plug, and is connected with the third port;

the first port and the second port are respectively provided with one-way valves arranged in the same direction;

and the first connecting pipe and the second connecting pipe are respectively provided with a bubble detection device.

2. The high pressure contrast injector and accessory of claim 1,

the check valve comprises a valve body with openings at two sides, a tip and a flexible valve plate;

the centre and the flexible valve plate are arranged inside the valve body;

the centre is formed into the taper shape, the middle part of flexible valve block butt in the minor diameter end of centre.

3. The high pressure contrast injector and accessory of claim 2,

the flexible valve plate is made of rubber materials.

4. The high pressure contrast injector and accessory of claim 1,

the second connecting pipe is connected with the micro-catheter through the interface.

5. The high pressure contrast injector and accessory of claim 4,

the third port and the interface are female luer connectors;

the output port of the injector and the input port of the micro-catheter are male luer connectors.

6. The high pressure contrast injector and accessory of claim 1,

the bubble detection means is an ultrasonic bubble sensor.

7. The high pressure contrast injector and accessory of claim 1,

the injector is connected with an injection head controlled by a control system through the rubber plug.

8. The high pressure contrast injector and accessory of any of claims 1 to 7,

when the bubble detection device detects bubbles, the control system controls the injection head to stop the operation of the injector.