Medical contrast agent injection device

Abstract

The invention provides a medical contrast agent injection device which comprises a magnetic attraction self-switching module, a handheld tube, a reserved tube, a contrast agent tube, an injection tube and a connecting hose, the magnetic attraction self-switching module comprises an injection cavity, an extraction cavity, an injection end, an extraction end, a steel ball, a track and a magnetic attraction plate, the injection cavity and the extraction cavity are each provided with three ports, and the magnetic attraction plate is provided with a magnetic attraction plate. The arc-shaped track is arranged between the end opening, close to the injection end, of the injection cavity and the end opening connected with the pressure measuring instrument, the track is composed of four arc-shaped inwards-concave cylinders and surrounds the steel ball, the number of the magnetic attraction plates is two, and the centers of the magnetic attraction plates are provided with holes for the track to pass through. A structure which is the same as that of the injection cavity is arranged between a port, close to the extraction end, of the extraction cavity and a closed port of the extraction cavity, the connection hose is connected with the injection end and one end of the handheld tube, the other end of the handheld tube is fixedly connected with the reserved tube and the three-way valve, and the other two ends of the three-way valve are connected with the contrast agent tube and the injection tube.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a medical contrast agent injection device. Background Art

[0002] Angiography is an auxiliary examination technique. In the era of advanced technology, angiography is widely used in the diagnosis and treatment of various clinical diseases. Angiography is an interventional detection method. The operator injects contrast agent into the blood vessels. Because X-rays cannot penetrate contrast agents, angiography can accurately reflect the location and extent of vascular lesions. Angiography plays an important role in the diagnosis and treatment of head and neck and central nervous system diseases, heart and large vessel diseases, tumors and peripheral vascular diseases.

[0003] In clinical treatment, a three-way valve is often used for angiographic injection. During the operation, the three-way valve is mainly responsible for flushing and exhausting the pipeline, extracting and injecting the contrast agent, and dynamically monitoring the pressure. The three-way valve at the pressure monitoring position needs to perform multiple complex manual valve switching operations as the liquid is pumped out, and often requires blind operation. This complex manual operation method is very prone to operational errors, so it is very meaningful to reduce the manual operation part of the contrast agent injection device. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a medical contrast agent injection device with magnetic self-switching pressure monitoring.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a medical contrast agent injection device, comprising a magnetic self-switching module, a handheld tube, a reserved tube, a contrast agent tube, an injection tube and a connecting hose, the magnetic self-switching module comprising an injection chamber, an extraction chamber, an injection end, an extraction end, a steel ball, a track and a magnetic plate, the injection chamber and the extraction chamber are closely fixedly connected as an integrated design, and both are T-shaped, the three ports of the injection chamber are respectively a pressure measuring end, an extraction port close to a patient and an injection port away from the patient, the three ports of the extraction chamber are respectively a closed port, a steel ball port close to a patient and an adsorption port away from the patient, the injection end is composed of the injection port and the adsorption port combined, the extraction end is composed of the extraction port and the steel ball port combined, the injection chamber is provided with an arc-shaped track between the pressure measuring end and the injection port, the track is composed of four arc-shaped concave cylinders, the four concave cylinders are cross-shapedly distributed at both ends of the track and the arc portion of the inner wall is connected to the two ends of the injection chamber The circular hole of the mouth is tangent, the steel ball is arranged in the track and the arc parts of the four concave cylinders are close to the surface of the steel ball to wrap the steel ball, the magnetic suction plate is provided with two pieces and the center is provided with a hole for the track to pass through, one of the magnetic suction plates is arranged on the inner wall of the injection cavity where the track and the injection port intersect, the extraction cavity is provided with the same track between the steel ball port and the closed port and the same steel ball is also arranged inside the track, the diameter of the steel ball is slightly larger than the diameter of the circular hole of the injection port and the steel ball port, the other magnetic suction plate is arranged on the inner wall of the extraction cavity where the track and the steel ball port intersect, the pressure measuring port is connected to the pressure measuring instrument through a dedicated pipeline, the closed port is a closed port, so the track port is directly fixedly connected to the inner wall of the extraction cavity, the connecting hose is made of medical corrosion-resistant material, one end is connected to the injection end and the other end is connected to one end of the hand-held tube, the other end of the hand-held tube is fixedly connected to the reserved tube and the three-way valve, and the other two ends of the three-way valve are connected to the contrast agent tube and the injection tube.

[0006] Preferably, the handheld tube is a triangular structure including an outer shell, a handheld tube body, a three-way valve end, a reserved tube end and a connecting end. The handheld tube body is a Y-shaped pipe. Two of the three ports of the handheld tube body away from the patient are the three-way valve end and the reserved tube end respectively. The three-way valve end is a port of the three-way valve. The reserved tube end is connected to the reserved tube. The connecting end is the port of the three ports of the handheld tube body close to the patient. The outer shell wraps the entire handheld tube.

[0007] Preferably, the bottom of the shell is set to be arc-shaped so that the reserved tube is in a downward oblique position, the cross-section of the shell is a circular arc structure, and an anti-slip protrusion is provided at the bottom of the shell. This design makes it easy for the operator to grip when operating the syringe for injection, and the operation can be smoother.

[0008] Preferably, a valve is provided at the intersection of the three pipes of the handheld tube body near the reserved tube end to control whether the reserved tube is used and to prevent other reagents from flowing out through the reserved tube.

[0009] Preferably, the entire contrast agent injection device is made of transparent plastic to facilitate observation and injection.

[0010] Compared with the prior art, the present invention has the following beneficial effects: (1) a steel ball is used to cooperate with the injection chamber and the extraction chamber to replace the three-way valve, and the same effect as the three-way valve is achieved by relying on the squeezing of the liquid and the pressure in the tube; (2) the position and angle of each instrument can be adjusted by the hand-held tube, making the entire device more convenient and natural to operate; (3) a connecting hose is used to connect the magnetic self-switching module and the hand-held tube, so that the operator does not need to hold a long contrast agent injection device, and does not need to consider the position of the magnetic self-switching module, so the operation becomes more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the medical contrast agent injection device of the present invention; Figure 2 It is a front view of the injection cavity of the medical contrast agent injection device of the present invention; Figure 3 It is a front view of the extraction chamber of the medical contrast agent injection device of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the injection cavity and the extraction cavity of the medical contrast agent injection device of the present invention; Figure 5 This is a schematic diagram of the structure of the extraction end of the medical contrast agent injection device of the present invention viewed from above; Figure 6 It is a cross-sectional view of the connection between the steel ball and the track of the medical contrast agent injection device of the present invention. DETAILED DESCRIPTION

[0012] In order to further understand the purpose, structure, features, and functions of the present invention, the following detailed description is made in conjunction with the embodiments. Figure 1 and Figure 4As shown, a medical contrast agent injection device includes a magnetic self-switching module 1, a handheld tube 2, a reserved tube 3, a contrast agent tube 4, an injection tube 5 and a connecting hose 6. The magnetic self-switching module 1 includes an injection chamber 110, an extraction chamber 120, an injection end 130, an extraction end 140, a steel ball 150, a track 160 and a magnetic plate 170. The injection chamber 110 and the extraction chamber 120 are closely connected and fixed side by side as an integrated design, and both are T-shaped. The injection end 130 is arranged at one end of the two chambers away from the patient, and the extraction end 140 is arranged at one end of the two chambers close to the patient. The extraction end 140 and the injection end 130 are both integrated with the injection chamber 110 and the extraction chamber 120. The handheld tube 2 is a triangular structure including a shell 210, a handheld tube body 220, a three-way valve end 230, a reserved tube end 240 and a connecting end 250. The handheld tube body 220 is The handheld tube body 220 comprises a Y-shaped pipe, wherein the two ports away from the patient among the three ports of the handheld tube body 220 are respectively the three-way valve end 230 and the reserved tube end 240, the three-way valve end 230 is a port of the three-way valve 231, and the other two ends of the three-way valve 231 are connected to the contrast agent tube 4 and the injection tube 5, the reserved tube end 240 is connected to the reserved tube 3, the connecting end 250 is the port close to the patient among the three ports of the handheld tube body 220 and is connected to one end of the connecting hose 6, and the other end of the connecting hose 6 is connected to the injection end 130, and a valve 241 is provided at the intersection of the three pipes of the handheld tube body 220 near the reserved tube end 240 to control whether the reserved tube 3 is used and prevent other reagents from flowing out through the reserved tube 3, and the shell 210 wraps the entire handheld tube 2, and an anti-slip protrusion is provided under the shell 210 for the operator to grasp.

[0013] like Figure 2 , Figure 3 and Figure 5 As shown, the magnetic self-switching module 1 includes an injection chamber 110, an extraction chamber 120, an injection end 130, an extraction end 140, a steel ball 150, a track 160 and a magnetic plate 170. The injection chamber 110 and the extraction chamber 120 are both T-shaped structures. The three ports of the injection chamber 110 are respectively a pressure measuring end 111, an extraction port 112 close to the patient and an injection port 113 away from the patient. The three ports of the extraction chamber 120 are respectively a closed port 121, a steel ball port 122 close to the patient and an adsorption port 123 away from the patient. The injection end 130 is composed of the injection port 113 and the adsorption port 123 combined, the extraction end 140 is composed of the extraction port 112 and the steel ball port 122 combined, and the injection chamber 110 is provided with an arc-shaped track 160 between the injection port 113 and the pressure measuring end 111; Figure 6As shown, the track 160 is composed of four arc-shaped concave cylinders 161, and the four concave cylinders 161 are distributed in a cross shape at both ends of the track 160, and the arc portion of the inner wall is tangent to the two port circular holes of the connected injection cavity 110, the steel ball 150 is arranged in the track 160, and the arc portion of the four concave cylinders 161 is close to the surface of the steel ball 150 to wrap the steel ball 150, the magnetic suction plate 170 is provided with two pieces and a hole is provided in the center for the track 160 to pass through, the magnetic plate 170 absorbs the steel ball 150, the diameter of the steel ball 150 is slightly larger than the diameter of the circular hole of the steel ball port 122 and the injection port 113, and the spherical surface of the steel ball 150 is matched with the two ports for easy sealing, such a design enables the steel ball 150 to better block the injection port 1 13 and the steel ball port 122, the cross-sectional area of ​​the central hole of the magnetic plate 170 is slightly larger than the cross-sectional area of ​​the circumscribed circle of the track 160, one of the magnetic plates 170 is arranged on the inner wall of the injection chamber 110 at the junction of the track 160 and the injection port 113, the extraction chamber 120 is provided with the same track 160 between the steel ball port 122 and the closed port 121 and the same steel ball 150 is also arranged inside the track 160, the other magnetic plate 170 is arranged on the inner wall of the extraction chamber 120 at the junction of the track 160 and the steel ball port 122, the pressure measuring end 111 is connected to the pressure measuring instrument through a dedicated pipeline, the closed port 121 is a closed port, so the track 160 port is directly fixedly connected to the inner wall of the extraction chamber 120.

[0014] The principle of use is to connect a special syringe to the injection tube 5. When the contrast agent is pushed, the contrast agent flows to the injection cavity 110 through the handheld tube body 220, the connecting hose 6 and the injection end 130 in sequence. The contrast agent pushes the steel ball 150 in the injection cavity 110 that is adsorbed by the magnetic plate 170 along the direction of the track 160. At this time, the injection cavity 110 is in a connected state. The contrast agent flows to the extraction end 140 through the injection cavity 110 and then enters the patient's body. At this time, because the steel ball in the extraction cavity 120 is adsorbed at the steel ball port 122, the contrast agent flowing to the extraction cavity 120 is intercepted in the extraction cavity 120. After the push is completed, the magnetic plate 170 in the injection cavity 110 attracts the steel ball 150 back to its original position to make the injection cavity 110 closed again.

[0015] Furthermore, when the liquid is withdrawn, the steel ball in the injection chamber 110 is in a closed state due to the adsorption of the magnetic plate 170 and the adsorption force during extraction, and the valve 241 next to the reserved tube end 240 is closed to make the internal pipeline of the entire device in a closed state. Therefore, when the liquid is withdrawn, the steel ball 150 in the extraction chamber 120 will break free from the adsorption of the magnetic plate 170 and move along the track 160, so that the extraction chamber 120 is in a connected state, and the liquid is sucked in by the extraction end 140 and flows through the extraction chamber 120, the connecting hose 6 and the hand-held tube body 220 and is discharged from the body through the three-way valve, and the liquid in the injection chamber 110 is discharged from the pressure measuring end 111. After the extraction is completed, the steel ball 150 in the extraction chamber 120 is adsorbed back to the original position by the magnetic plate 170 to close the extraction chamber 120 again.

[0016] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A medical contrast agent injection device, comprising a magnetic self-switching module, a hand-held tube, a reserved tube, a contrast agent tube, an injection tube and a connecting hose, characterized in that: The injection chamber and the extraction chamber are closely fixedly connected as an integrated design, and both are T-shaped. The three ports of the injection chamber are respectively a pressure measuring end, an extraction port close to the patient, and an injection port away from the patient. The three ports of the extraction chamber are respectively a closed port, a steel ball port close to the patient, and an adsorption port away from the patient. The injection end is composed of the injection port and the adsorption port combined, and the extraction end is composed of the extraction port and the steel ball port combined. The injection chamber is provided with an arc-shaped track between the pressure measuring end and the injection port, and the track is composed of four arc-shaped concave cylinders. The four concave cylinders are distributed in a cross shape at both ends of the track, and the arc portion of the inner wall is tangent to the two circular holes of the connected injection chamber ports. The steel ball is arranged in the track, and the arc portions of the four concave cylinders are in close contact with the surface of the steel ball, thereby wrapping the steel ball. There are two magnetic plates in total and a hole is provided in the center for the track to pass through. One of the magnetic plates is arranged on the inner wall of the injection chamber where the track and the injection port intersect. The extraction chamber is provided with the same track between the steel ball port and the closed port and the same steel balls are also provided inside the track. The diameter of the steel balls is slightly larger than the diameter of the circular holes of the injection port and the steel ball port. The other magnetic plate is arranged on the inner wall of the extraction chamber where the track and the steel ball port intersect. The pressure measuring port is connected to the pressure measuring instrument through a dedicated pipeline. The closed port is a closed port, so the track port is directly fixedly connected to the inner wall of the extraction chamber. One end of the connecting hose is connected to the injection end and the other end is connected to one end of the hand-held tube. The other end of the hand-held tube is fixedly connected to the reserved tube and the three-way valve. The other two ends of the three-way valve are connected to the contrast agent tube and the injection tube.

2. The medical contrast agent injection device according to claim 1, characterized in that: The handheld tube is a triangular structure including an outer shell, a handheld tube body, a three-way valve end, a reserved tube end and a connecting end. The handheld tube body is a Y-shaped pipe. Two of the three ports of the handheld tube body that are away from the patient are respectively the three-way valve end and the reserved tube end. The three-way valve end is a port of the three-way valve. The reserved tube end is connected to the reserved tube. The connecting end is the port of the three ports of the handheld tube body that is close to the patient. The outer shell wraps the entire handheld tube.

3. The medical contrast agent injection device according to claim 1, characterized in that: The lower part of the shell is designed to be in an arc shape so that the reserved pipe is in an oblique downward position. The cross section of the shell is an arc structure, and an anti-slip protrusion is provided at the lower part of the shell.

4. The medical contrast agent injection device according to claim 1, characterized in that: A valve is provided at a position near the reserved pipe end at the intersection of the three pipes of the handheld pipe body.

5. The medical contrast agent injection device according to claim 1, characterized in that: The entire contrast medium injection device is made of clear plastic.

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