Double-cavity pipeline for arterial drainage

Abstract

The double-cavity pipeline for arterial drainage comprises a first pipeline and a second pipeline, the first end and the second end of the first pipeline are opened; a balloon is formed around the first pipeline close to the second end of the first pipeline, the balloon is connected with a third pipeline, and the first end of the third pipeline is located outside the artery blood vessel; the balloon is used for abutting against the inner circumference of an arterial blood vessel with appropriate pressure when expanded, and blocking is formed in the arterial blood vessel. Blood flow at the upstream of the balloon is led out to the outside through the first pipeline under the action of arterial pressure, so that the led-out blood can be conveniently and correspondingly treated to obtain treated blood; the first end of the second pipeline is opened and the second end is closed; a side hole is formed in the second pipeline close to the second end of the second pipeline; the side hole is close to the downstream of the balloon and far away from the upstream of the balloon; treated blood is injected into the second pipeline through the first end of the second pipeline and then injected into the downstream of the balloon through the side hole of the second pipeline.

Description

Technical Field

[0001] The present application relates to a medical tube, and in particular to a double-lumen tube for arterial drainage. Background Art

[0002] Hemofiltration therapy is often required in cases of hypervolemic heart failure, high-renin refractory hypertension, severe electrolyte acid-base imbalance, drug or toxin poisoning, etc.

[0003] At present, the mode of blood filtration mainly uses two tubes or double-lumen tubes to extract blood from the venous system through a blood filtration instrument, and then passes through a blood filter to exchange with the filtrate to achieve the effects of dehydration, correction of acid-base electrolyte balance, and removal of toxins, and then the filtered blood is re-injected into the body. After a period of filtration, the final treatment effect is achieved.

[0004] However, this mode relies on the power provided by the ultrafiltration or blood filtration machine roller pump to achieve the effect of extracting and re-injecting blood. It is not suitable for use in transportation or without a blood filtration machine. Summary of the invention

[0005] In view of the above problems, the present application aims to propose a double-lumen tube for arterial drainage, which does not require additional power and is suitable for providing the possibility of blood filtration or ultrafiltration dehydration during transportation and without machine power.

[0006] The double-lumen pipeline for arterial drainage of the present application comprises: a first pipeline and a second pipeline; The second ends of the first tube and the second tube are used to be inserted into the artery through the puncture point on the arterial wall of the subject; the first ends of the first tube and the second tube are used to be retained outside the arterial wall of the subject; The first end and the second end of the first pipeline are both open; a balloon is formed around the first pipeline near the second end of the first pipeline, and the balloon is connected to a third pipeline, and the first end of the third pipeline is located outside the artery, so that the balloon can be filled with or extracted with fluid through the third pipeline to expand or contract the balloon; when the balloon is expanded, it is used to press against the inner periphery of the artery with appropriate pressure to form a blockage in the artery, so that the blood flow of the artery forms a predetermined pressure difference between the upstream and downstream of the balloon; the blood flow upstream of the balloon is led out to the outside through the first pipeline under the action of the arterial pressure, so as to facilitate the corresponding treatment of the led blood to obtain the treated blood; the balloon is an elastic balloon to adapt to arteries with different inner diameters; The first end of the second pipeline is open and the second end is closed; a side hole is formed on the second pipeline near the second end of the second pipeline; the side hole is close to the downstream of the balloon and away from the upstream of the balloon; the treated blood enters the second pipeline through the first end of the second pipeline and is injected into the downstream of the balloon through the side hole of the second pipeline to achieve blood supply to the arterial blood vessel downstream of the balloon.

[0007] Preferably, a first pressure sensor is provided at the first end of the balloon to measure the blood flow pressure at the first end of the balloon; a second pressure sensor is provided at the second end of the balloon to measure the blood flow pressure at the second end of the balloon; the first pressure sensor and the second pressure sensor are used to determine whether the pressure difference between the upstream and downstream of the balloon reaches a predetermined pressure difference, so as to determine whether the artery is blocked; the first pressure sensor is also used to monitor the pressure of the treated blood injected into the downstream of the balloon, so as to ensure that the treated blood can be supplied to the required position. A pressure sensor can also be provided at the first end of the third pipeline to measure the pressure of the balloon connected to the third pipeline, thereby determining that the pressure on the inner periphery of the artery is within an appropriate range to avoid damage to the vascular wall caused by excessive pressure.

[0008] Preferably, a section of the second pipeline close to the second end thereof is formed integrally with the first pipeline, so as to facilitate the integrated insertion of the first pipeline and the second pipeline into the arterial blood vessel.

[0009] Preferably, the first pipeline and the third pipeline are arranged through the outer casing column, and the outer peripheral contour of the outer casing column is circular; A section of the second pipeline near its second end is formed in the outer column, and a notch corresponding to the side hole of the second pipeline is formed on the outer column. The cylindrical outer column is convenient for insertion into the blood vessel through the puncture point on the one hand, and is convenient for the blood vessel wall at the puncture point to fit closely with the peripheral surface of the outer column on the other hand.

[0010] Preferably, a first wire and a second wire are formed in the wall of the third pipeline; the first wire is connected to the first pressure sensor for transmitting the sensing result of the first pressure sensor to the outside; the second wire is connected to the second pressure sensor for transmitting the sensing result of the second pressure sensor to the outside.

[0011] The double-lumen pipeline for arterial drainage of the present application blocks the local arterial blood flow through a balloon, utilizes the pressure of the artery itself to fully lead out the blood flow upstream of the balloon, and then connects to an ultrafiltration tube, a blood filtration tube, or an oxygen exchange membrane lung and other corresponding devices to process or treat the blood accordingly. The treated blood is then sent into the artery through a second pipeline to achieve blood supply downstream of the balloon. Because the arterial pressure itself provides power, the double-lumen pipeline for arterial drainage of the present application can be led out of the body for ultrafiltration, blood filtration, or blood oxygen exchange without an extracorporeal power device, thereby achieving the effects of ultrafiltration dehydration for heart failure patients, blood filtration for renal failure patients, extracorporeal oxygenation exchange for hypoxic patients, and adsorption of poisons for poisoned patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the double-lumen tube used for arterial drainage in the present application.

[0013] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of a double-lumen tube for arterial drainage.

[0014] Figure 3 for Figure 1 Schematic diagram of the longitudinal section of a double-lumen tube for arterial drainage.

[0015] Figure 4 for Figure 1 Schematic diagram of a cross-section of a double-lumen line for arterial drainage. DETAILED DESCRIPTION

[0016] Below, the present application is described in detail with reference to the accompanying drawings.

[0017] The double-lumen pipeline for arterial drainage of the present application comprises: a first pipeline 1 and a second pipeline 2.

[0018] The second ends of the first tube 1 and the second tube 2 are used to be inserted into the artery through the puncture point on the arterial wall of the subject; the first ends of the first tube 1 and the second tube 2 are used to be retained outside the artery of the subject.

[0019] The first end and the second end of the first pipeline 1 are both open; near the second end of the first pipeline 1, a balloon 4 is formed around the first pipeline 1, and the balloon 4 is connected to the third pipeline 3. The first end of the third pipeline 3 is located outside the artery, so that the balloon 4 can be filled with or extracted with fluid (such as air or saline) through the third pipeline 3, so that the balloon 4 expands or contracts. When the balloon 4 expands, it is used to press against the inner periphery of the artery with appropriate pressure, forming a blockage in the artery, so that the blood flow of the artery forms a predetermined pressure difference between the upstream and downstream of the balloon 4; the blood flow upstream of the balloon 4 is led to the outside through the first pipeline 1 under the action of the arterial pressure of the artery itself, specifically, entering through the second end of the first pipeline and being led out through the first end of the first pipeline, so as to facilitate the corresponding treatment of the led blood to obtain the treated blood; the balloon 4 is an elastic balloon to adapt to arteries with different inner diameters.

[0020] The first end of the second pipeline 2 is open, and the second end is closed; a side hole 21 is formed on the second pipeline near the second end of the second pipeline 2; the side hole 21 is close to the downstream of the balloon 4 and far away from the upstream of the balloon 4; the treated blood enters the second pipeline 2 through the first end of the second pipeline 2 and is injected into the downstream of the balloon 4 through the side hole 21 of the second pipeline 2 to achieve blood supply to the artery downstream of the balloon. The side hole 21 may include multiple, and the directions of the multiple side holes may be different.

[0021] A first pressure sensor 5 is provided at the first end of the balloon 4 to measure the blood flow pressure at the first end of the balloon; a second pressure sensor 6 is provided at the second end of the balloon 4 to measure the blood flow pressure at the second end of the balloon; the first pressure sensor 5 and the second pressure sensor 6 are used to determine whether the pressure difference between the upstream and downstream of the balloon reaches a predetermined pressure difference, so as to determine whether the artery is blocked; the first pressure sensor 5 is also used to monitor the pressure of the treated blood injected into the downstream of the balloon, so as to ensure that the treated blood has sufficient pressure and can be supplied to the required position. A pressure sensor can also be provided at the first end of the third pipeline 3, for example, by providing a manifold near the first end of the third pipeline, and providing a pressure sensing device on the manifold to measure the pressure of the balloon 4 connected to the third pipeline 3, thereby determining that the pressure on the inner periphery of the artery is in an appropriate range to avoid damage to the vascular wall caused by excessive pressure.

[0022] A section of the second pipeline 2 close to the second end thereof is formed integrally with the first pipeline 1, so that the first pipeline 1 and the second pipeline 2 can be conveniently inserted into the arterial blood vessel in an integrated manner.

[0023] The first pipeline 1 and the third pipeline 3 are arranged through the outer casing column, and the outer peripheral contour of the outer casing column is circular.

[0024] A section of the second pipeline 2 near its second end is formed in the outer column, and a notch corresponding to the side hole of the second pipeline is formed on the outer column. The cylindrical outer column is convenient for insertion into the blood vessel through the puncture point on the one hand, and is convenient for the blood vessel wall at the puncture point to fit closely with the outer column circumference on the other hand. The second end of the outer column is located at the part where the first pipeline and the third pipeline are connected to form a smooth transition portion, so as to facilitate smooth passage through the puncture point of the arterial blood vessel at this location.

[0025] A first conductive wire 51 and a second conductive wire 61 are formed in the wall of the third pipeline 3; the first conductive wire 51 is connected to the first pressure sensor 5 for transmitting the sensing result of the first pressure sensor 5 to the outside; the second conductive wire 61 is connected to the second pressure sensor 6 for transmitting the sensing result of the second pressure sensor to the outside.

[0026] When in use, the first end of the double-lumen pipeline for arterial drainage of the present application is inserted into the arterial vessel through the puncture point of the arterial vessel. Specifically, a guide wire can be inserted first, and then the first pipeline is sheathed on the guide wire, thereby using the guide wire to guide the entire double-lumen pipeline to be inserted into the arterial vessel; the balloon is inflated to expand the balloon; when the arterial vessel is completely blocked, the pressure difference between the upstream and downstream of the balloon will suddenly increase. After the arterial vessel is blocked, the blood upstream of the balloon is guided out by the first pipeline and then subjected to corresponding treatment or processing, such as ultrafiltration, hemofiltration, or blood oxygen exchange; the treated blood is re-sent to the downstream of the balloon of the arterial vessel through the second pipeline, and the pressure at the downstream of the balloon is observed by the first pressure sensor. At this time, a pressure regulating valve can be set near the first end of the second pipeline so that the pressure of the blood injected into the downstream of the balloon is appropriate, and the pressure difference between the upstream and downstream of the balloon is guaranteed under the condition of ensuring the supply of the corresponding tissues or organs downstream, so as to ensure the purpose of non-powered blood flow reflux.

[0027] The double-lumen tube for arterial drainage of the present application is more portable and more conducive to emergency use.

[0028] The double-lumen tube for arterial drainage of the present application uses its own arterial pressure to provide power, blocks local blood flow through the balloon, reduces the pressure at the return end, provides a pressure gradient, thereby achieving blood flow, and performs blood flow filtration treatment independent of machines. It is suitable for rapid treatment in emergency situations and wins treatment opportunities for critically ill patients.

Claims

1. A double-lumen tube for arterial drainage, comprising: A first pipeline and a second pipeline; The second ends of the first tube and the second tube are used to be inserted into the arterial blood vessel through the puncture point on the arterial blood vessel wall of the subject; The first ends of the first tube and the second tube are adapted to remain outside of an arterial blood vessel of a subject; The first end and the second end of the first pipeline are both open; a balloon is formed around the first pipeline near the second end of the first pipeline, and the balloon is connected to the third pipeline, and the first end of the third pipeline is located outside the arterial blood vessel, so that the balloon can be filled with or extracted with fluid through the third pipeline to expand or contract the balloon; when the balloon is expanded, it is used to press against the inner periphery of the arterial blood vessel with appropriate pressure to form a blockage in the arterial blood vessel, so that the blood flow of the arterial blood vessel forms a predetermined pressure difference between the upstream and downstream of the balloon; the blood flow upstream of the balloon is led out to the outside through the first pipeline under the action of the arterial pressure, so as to obtain the treated blood after the led blood is processed accordingly; The first end of the second conduit is open, and the second end is closed; a side hole is formed on the second conduit near the second end of the second conduit; the side hole is close to the downstream of the balloon and away from the upstream of the balloon; The processed blood is injected into the second pipeline through the first end of the second pipeline and then injected into the downstream of the balloon through the side hole of the second pipeline to realize blood supply to the arterial blood vessels downstream of the balloon.

2. The double-lumen tube for arterial drainage according to claim 1, characterized in that: A first pressure sensor is provided at the first end of the balloon for measuring the blood flow pressure at the first end of the balloon; a second pressure sensor is provided at the second end of the balloon for measuring the blood flow pressure at the second end of the balloon; the first pressure sensor and the second pressure sensor are used to determine whether the pressure difference between the upstream and downstream of the balloon reaches a predetermined pressure difference; the first pressure sensor is also used to monitor the pressure of the treated blood injected into the downstream of the balloon to ensure that the treated blood can be supplied to the required position.

3. The double-lumen tube for arterial drainage according to claim 1, characterized in that: A section of the second pipeline close to the second end thereof is formed integrally with the first pipeline.

4. The double-lumen tube for arterial drainage according to claim 1, characterized in that: The first pipeline and the third pipeline are arranged through the outer casing column, and the outer peripheral contour of the outer casing pipe is circular; A section of the second pipeline close to the second end thereof is formed in the outer casing column, and a notch corresponding to the side hole of the second pipeline is formed on the outer casing column.

5. The double-lumen tube for arterial drainage according to claim 2, characterized in that: A first wire and a second wire are formed in the wall of the third pipeline; the first wire is connected to the first pressure sensor for transmitting the sensing result of the first pressure sensor to the outside; the second wire is connected to the second pressure sensor for transmitting the sensing result of the second pressure sensor to the outside.

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