Double lumen tubing for arterial drainage

Abstract

The double-lumen pipeline for arterial drainage of the application comprises a first pipeline, a second pipeline, a first end and a 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, the balloon is connected with a third pipeline, a first end of the third pipeline is located outside the arterial blood vessel, the balloon is inflated to abut on the inner wall of the arterial blood vessel under proper pressure to form a blockage in the arterial blood vessel, blood upstream of the balloon is led out to the outside through the first pipeline under the action of arterial pressure to facilitate corresponding treatment of the led-out blood to obtain treated blood, a first end of the second pipeline is open, a second end of the second pipeline 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 far away from the upstream of the balloon, and the 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] This application relates to a medical tubing, and more particularly to a double-lumen tubing for arterial drainage. Background Technology

[0002] In cases of hypervolemic heart failure, refractory hypertension with high renin levels, severe electrolyte and acid-base imbalances, or drug or toxin poisoning, hemofiltration therapy is often required.

[0003] Currently, the main method of blood filtration involves using two or more tubing lines. Blood is drawn from the venous system through a blood filtration device, then passes through the filter. By exchanging fluid with the filtrate, the blood achieves effects such as dehydration, correction of acid-base and electrolyte imbalance, and removal of toxins. The filtered blood is then reinjected into the body. After a period of filtration, the final therapeutic effect is achieved.

[0004] However, this method relies on the roller pump of an ultrafiltration or hemofiltration machine to provide power for drawing and re-infusing blood. It is not suitable for use during transport or in situations where a hemofiltration machine is unavailable. Summary of the Invention

[0005] In view of the above problems, this application aims to provide a dual-lumen tubing for arterial drainage that does not require additional power and is suitable for enabling blood filtration or ultrafiltration dehydration during transport and in the absence of machine-powered conditions.

[0006] The dual-lumen conduit for arterial drainage of this application includes: a first conduit and a second conduit;

[0007] The second ends of the first and second tubing are used to insert into the artery through a puncture point on the wall of the subject's artery; the first ends of the first and second tubing are used to remain outside the subject's artery.

[0008] Both the first and second ends of the first conduit are open. A balloon is formed around the second end of the first conduit, and the balloon is connected to a third conduit. The first end of the third conduit is located outside the artery, allowing fluid to be injected into or withdrawn from the balloon, causing it to inflate or contract. When inflated, the balloon presses against the inner periphery of the artery with appropriate pressure, creating a blockage within the artery and establishing a predetermined pressure difference between the upstream and downstream sides of the balloon. Under the influence of arterial pressure, the blood flow upstream of the balloon is drained to the outside through the first conduit for further processing to obtain treated blood. The balloon is an elastic balloon to accommodate arteries of different diameters.

[0009] 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. The side hole is close to the downstream of the balloon and far 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 supply the blood to the downstream of the balloon.

[0010] Preferably, a first pressure sensor is arranged 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 arranged 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 the downstream of the balloon reaches a predetermined pressure difference 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 to ensure that the treated blood can be supplied to the desired position. A pressure sensor can also be arranged at the first end of the third pipeline to measure the pressure of the balloon connected with the third pipeline, so as to determine that the pressure on the inner wall of the artery is in an appropriate range to avoid the damage of the blood vessel wall caused by excessive pressure.

[0011] Preferably, a section of the second pipeline near the second end is integrally formed with the first pipeline, which facilitates the insertion of the first pipeline and the second pipeline into the artery.

[0012] Preferably, the first pipeline and the third pipeline are arranged through the outer cylinder, and the outer cylinder has a circular outer contour.

[0013] The section of the second pipeline near the second end is formed in the outer cylinder, and the outer cylinder has a notch corresponding to the side hole of the second pipeline. The cylindrical outer cylinder facilitates the insertion of the puncture point into the blood vessel and facilitates the close fit of the blood vessel wall at the puncture point with the outer wall of the outer cylinder.

[0014] Preferably, the third pipeline has a first wire and a second wire formed in the wall of the third pipeline. The first wire is connected with the first pressure sensor to transmit the sensing result of the first pressure sensor to the outside. The second wire is connected with the second pressure sensor to transmit the sensing result of the second pressure sensor to the outside.

[0015] This application discloses a dual-lumen tubing for arterial drainage. It uses a balloon to block local arterial blood flow, utilizing the pressure of the artery itself to fully draw blood upstream of the balloon. This blood is then connected to an ultrafiltration tube, hemofiltration tube, or oxygen exchange membrane lung, etc., for appropriate treatment or therapy. After treatment, the blood is then delivered back into the artery through a second tubing, thus supplying blood downstream of the balloon. Because the arterial pressure itself provides the power, this dual-lumen tubing for arterial drainage can be extended outside the body for ultrafiltration, hemofiltration, or blood oxygen exchange without an external power device. This achieves effects such as ultrafiltration dehydration for heart failure patients, hemofiltration for renal failure patients, extracorporeal oxygenation exchange for hypoxic patients, and toxin adsorption for poisoned patients. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the dual-lumen tubing for arterial drainage according to this application.

[0017] Figure 2 for Figure 1 A three-dimensional schematic diagram of a double-lumen tubing used for arterial drainage.

[0018] Figure 3 for Figure 1 A schematic diagram of the longitudinal section of a double-lumen tubing used for arterial drainage.

[0019] Figure 4 for Figure 1 A schematic diagram of the cross-section of a double-lumen tubing used for arterial drainage. Detailed Implementation

[0020] The present application will now be described in detail with reference to the accompanying drawings.

[0021] The dual-lumen conduit for arterial drainage of this application includes: a first conduit 1 and a second conduit 2.

[0022] The second ends of the first conduit 1 and the second conduit 2 are used to insert into the artery through a puncture point on the wall of the subject's artery; the first ends of the first conduit 1 and the second conduit 2 are used to remain outside the subject's artery.

[0023] The first end and the second end of the first pipe 1 are both open; a balloon 4 is formed around the first pipe 1 near the second end of the first pipe 1, and the third pipe 3 is connected to the balloon 4, with the first end of the third pipe 3 located outside the artery blood vessel, so that the balloon 4 is filled with or drained of fluid (such as air or physiological saline) through the third pipe 3, so that the balloon 4 is inflated or deflated. When the balloon 4 is inflated, it is used to abut against the inner circumference of the artery blood vessel at a proper pressure, to form a blockage in the artery blood vessel, so that the blood flow of the artery blood vessel forms a predetermined pressure difference between the upstream and downstream of the balloon 4; the blood flow upstream of the balloon 4 is guided out to the outside through the first pipe 1 under the action of the arterial pressure of the artery itself, specifically, enters through the second end of the first pipe and is guided out through the first end of the first pipe, to facilitate the corresponding processing of the guided blood to obtain treated blood; the balloon 4 is an elastic balloon to adapt to artery blood vessels of different inner diameters.

[0024] The first end of the second pipe 2 is open, and the second end is closed; a side hole 21 is formed on the second pipe 2 near the second end of the second pipe 2; the side hole 21 is close to the downstream of the balloon 4 and away from the upstream of the balloon 4; the treated blood enters the second pipe 2 through the first end of the second pipe 2 and is injected into the downstream of the balloon 4 through the side hole 21 of the second pipe 2, to realize the blood supply of the artery blood vessel downstream of the balloon. The side hole 21 can include multiple side holes, and the orientations of the multiple side holes can be different.

[0025] A first pressure sensor 5 is arranged 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 arranged at the second end of the balloon 4 to measure the blood flow pressure at the second end of the balloon; whether the pressure difference between the upstream and downstream of the balloon reaches a predetermined pressure difference is determined by the first pressure sensor 5 and the second pressure sensor 6, to determine whether the artery blood vessel is blocked; the first pressure sensor 5 is also used to monitor the pressure of the treated blood injected at the downstream of the balloon, to ensure that the treated blood has sufficient pressure and can be supplied to the required position. A pressure sensor can also be arranged at the first end of the third pipe 3, for example, a manifold is arranged near the first end of the third pipe, and a pressure sensing device is arranged on the manifold, to measure the pressure of the balloon 4 communicated with the third pipe 3, so as to determine that the pressure on the inner circumference of the artery blood vessel is within a proper range, to avoid blood vessel wall damage caused by excessive pressure.

[0026] A section of the second pipe 2 near the second end thereof is integrally formed with the first pipe 1, to facilitate the integrated insertion of the first pipe 1 and the second pipe 2 into the artery blood vessel.

[0027] The first pipe 1 and the third pipe 3 are arranged through the outer package pipe, and the outer circumference profile of the outer package pipe is circular.

[0028] The second pipeline 2 is formed in the outer cylinder near the second end of the second pipeline, and the outer cylinder is formed with a notch corresponding to the side hole of the second pipeline. The cylindrical outer cylinder is convenient for insertion into the blood vessel through the puncture point and is convenient for the blood vessel wall at the puncture point to be closely attached to the peripheral surface of the outer cylinder. The second end of the outer cylinder is located at the part where the first pipeline and the third pipeline are connected to form a smooth transition part to facilitate smooth passage of the puncture point of the arterial blood vessel.

[0029] The first wire 51 and the second wire 61 are formed in the wall of the third pipeline 3; the first wire 51 is connected with the first pressure sensor 5 and is used to transmit the sensing result of the first pressure sensor 5 to the outside; the second wire 61 is connected with the second pressure sensor 6 and is used to transmit the sensing result of the second pressure sensor to the outside.

[0030] In use, the first end of the double-lumen pipeline for arterial drainage of the application is inserted into the arterial blood vessel through the puncture point of the arterial blood vessel, and specifically, a guide wire can be first placed, and then the first pipeline is sleeved on the guide wire, so that the entire double-lumen pipeline is inserted into the arterial blood vessel by using the guide wire for guidance; the balloon is inflated so that the balloon expands; when the arterial blood vessel is completely blocked, the pressure difference between the upstream and downstream of the balloon will suddenly increase. After the arterial blood vessel is blocked, the blood upstream of the balloon is guided out by the first pipeline, and then corresponding treatment or processing is performed, such as ultrafiltration, hemofiltration, or blood oxygen exchange; the processed blood is re-injected into the downstream of the balloon of the arterial blood vessel through the second pipeline, and the pressure at the downstream of the balloon is observed through the first pressure sensor; at this time, a pressure regulating valve can be arranged 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 ensured to ensure the purpose of passive blood flow return.

[0031] The double-lumen pipeline for arterial drainage of the application is more portable and is more conducive to emergency use.

[0032] The double-lumen pipeline for arterial drainage of the application utilizes the arterial pressure itself to provide power, blocks the local blood flow through the balloon, reduces the pressure at the return end, provides a pressure step difference, and thus achieves blood flow and machine-independent hemofiltration treatment. It is suitable for rapid treatment in emergency situations and wins the treatment opportunity for critical patient treatment.

Claims

1. A dual lumen tubing for arterial drainage, comprising: The first tube and the second tube; The second ends of the first tube and the second tube are used to be inserted into the arterial blood vessel through a puncture point on the arterial blood vessel wall of the subject; The first ends of the first tube and the second tube are used to be kept outside the arterial blood vessel of the subject; The first end and the second end of the first tube are both open; a balloon is formed around the first tube close to the second end of the first tube, the balloon is connected with a third tube, the first end of the third tube is located outside the arterial blood vessel, so that the balloon is inflated or deflated by filling or discharging fluid through the third tube; when the balloon is inflated, it is used to abut against the inner circumference of the arterial blood vessel at a proper pressure, to form a blockage in the arterial blood vessel, so that a predetermined pressure difference is formed between the upstream and the downstream of the arterial blood vessel; the blood flow upstream of the balloon is guided to the outside through the first tube under the action of arterial pressure, so as to obtain treated blood after the exported blood is treated correspondingly; The first end of the second tube is open, and the second end is closed; a side hole is formed on the second tube close to the second end of the second tube; the side hole is close to the downstream of the balloon and away from the upstream of the balloon; The treated blood is injected into the second tube through the first end of the second tube, and then injected into the downstream of the balloon through the side hole of the second tube, so as to supply blood to the arterial blood vessel downstream of the balloon; A first pressure sensor is arranged 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 arranged at the second end of the balloon, for measuring the blood flow pressure at the second end of the balloon; whether the pressure difference between the upstream and the downstream of the balloon reaches the predetermined pressure difference is determined by the first pressure sensor and the second pressure sensor; 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.

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

3. The double-lumen tube for arterial drainage according to claim 1, characterized in that: The first tube and the third tube are arranged through the outer package column, and the outer circumference of the outer package tube is circular; The section of the second tube close to the second end of the second tube is formed in the outer package column, and a notch corresponding to the side hole of the second tube is formed in the outer package column.

4. The double-lumen tube for arterial drainage according to claim 1, characterized in that: First and second wires are formed in the tube wall of the third tube; the first wire is connected with the first pressure sensor, for transmitting the sensing result of the first pressure sensor to the outside; the second wire is connected with the second pressure sensor, for transmitting the sensing result of the second pressure sensor to the outside.

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