Dual lumen tubing for crossing aortic valve

Abstract

The application provides a kind of for the double lumen pipeline across aortic valve, it is used for the patient of venous-arterial extracorporeal membrane oxygenation (VA-ECMO) treatment by femoral artery cannulation, it includes: first pipeline, second pipeline;The first end and the second end of first pipeline are both open;The first end of first pipeline is used to enter left ventricle after crossing the aortic valve of the heart of subject, and the second end of first pipeline is used to connect ECMO pipeline venous tube tee joint;The first end of second pipeline is blocked, and the second end of second pipeline is open;Second side hole is formed near the first end of second pipeline;The second side hole is located between the aortic valve of subject and head and arm stem, and the second end of second pipeline is used to connect ECMO pipeline arterial tube tee joint;First pipeline and a part of second pipeline are integrally formed;The first end of first pipeline extends beyond the first end of second pipeline, and forms extension section.

Description

TECHNICAL FIELD

[0001] The present application relates to a pipeline for VA-ECMO treatment of patients, in particular to a double-lumen pipeline for crossing the aortic valve. BACKGROUND

[0002] Patients undergoing veno-arterial extracorporeal membrane oxygenation (VA-ECMO) treatment through femoral arterial cannulation, due to the opposite direction of the arterial blood returned by ECMO and the forward arterial blood pumped by the heart, the returned arterial blood will hinder the further outflow of the arterial blood pumped by the heart, and the two flows form a collision plane, the position of the plane is related to heart function, the better the heart function, the farther away from the aortic sinus. When VA-ECMO patients with lung disease have abnormal lung oxygen exchange, the oxygen content of the forward blood flow pumped by the heart after passing through the pulmonary circulation is low, and this part of blood flow affected by the collision plane will supply the heart, brain and upper body of the patient, thereby causing the common "north-south syndrome" of VA-ECMO patients.

[0003] Patients undergoing veno-arterial extracorporeal membrane oxygenation (VA-ECMO) treatment through femoral arterial cannulation, if the heart function is poor, it may cause left heart ejection difficulty or inability to eject, thereby causing left heart enlargement and causing serious complications such as left ventricular thrombosis. SUMMARY

[0004] In view of the above problems, the present application aims to provide a double-lumen pipeline for crossing the aortic valve, which on the one hand solves the problem of left heart ejection difficulty or inability to eject of patients undergoing veno-arterial extracorporeal membrane oxygenation treatment through femoral arterial cannulation, and on the other hand solves the problem of "north-south syndrome" of patients undergoing veno-arterial extracorporeal membrane oxygenation treatment through femoral arterial cannulation.

[0005] The double-lumen pipeline for crossing the aortic valve of the present application is used for patients undergoing veno-arterial extracorporeal membrane oxygenation treatment through femoral arterial cannulation, which comprises: a first pipeline, a second pipeline;

[0006] The first end and the second end of the first pipeline are both open; the first end of the first pipeline is used to enter the left ventricle after crossing the aortic valve of the subject's heart, and the second end of the first pipeline is used to connect the ECMO pipeline venous tube tee to pump the blood in the subject's left ventricle into the ECMO pipeline venous tube;

[0007] The first end of the second pipeline is sealed, and the second end of the second pipeline is open; a second side hole is formed near the first end of the second pipeline; the second side hole is located between the aortic valve and the brachiocephalic trunk of the subject, and the second end of the second pipeline is used to connect the ECMO pipeline arterial tube tee to perfuse the oxygen-rich arterial blood in the ECMO pipeline arterial tube into the ascending aorta of the subject;

[0008] The first pipe and a part of the second pipe are integrally formed, and the integrally formed part is from the first end of the second pipe to a position close to the second end of the second pipe; the first end of the first pipe extends beyond the first end of the second pipe to form an extension section.

[0009] Preferably, the extension section of the first pipe is coiled after entering the left ventricle of the subject.

[0010] Preferably, the extension section is provided with a plurality of first side holes.

[0011] Preferably, the plurality of first side holes are distributed along the length direction of the extension section and face different directions.

[0012] Preferably, the first end of the first pipe is provided with a first marker to display the position of the first end of the first pipe under X-ray.

[0013] Preferably, the second side hole of the second pipe is provided with a second marker to display the position of the second side hole of the second pipe under X-ray.

[0014] Preferably, the second ends of the first pipe and the second pipe are separated.

[0015] Preferably, the outer circumferential surface of the integrally formed part of the first pipe and the second pipe is a smooth cylindrical surface.

[0016] Preferably, a tapered transition part is formed in the integrally formed part of the first pipe and the second pipe at the first end of the second pipe.

[0017] The double-lumen pipe for crossing the aortic valve of the present application utilizes two pipes connected with ECMO respectively to realize the pumping of blood in the left ventricle of the subject and the supply of blood to the ascending aorta, so as to reduce the function of the left ventricle and avoid the occurrence of "north-south syndrome". BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the double-lumen pipe for crossing the aortic valve of the present application.

[0019] Figure 2 It is a cross-sectional structural schematic diagram of the double-lumen pipe for crossing the aortic valve of the present application. Figure 1

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the double-lumen pipe for crossing the aortic valve of the present application. Figure 1 DETAILED DESCRIPTION

[0021] The present application will be described in detail below in combination with the drawings.

[0022] ​​The double-lumen tube for crossing the aortic valve of the present application, which is used for a patient undergoing transfemoral cannulation for venous-arterial extracorporeal membrane oxygenation treatment, comprises: a first tube 1 and a second tube 2.

[0023] The first end and the second end of the first tube 1 are both open. The first end of the first tube 1 is used to enter the left ventricle behind the aortic valve of the subject's heart, and the second end of the first tube 1 is used to connect the ECMO tube venous tube three-way joint to pump the blood in the subject's left ventricle into the ECMO tube venous tube.

[0024] The first end of the second tube 2 is sealed, and the second end of the second tube 2 is open; a second side hole 21 is formed near the first end of the second tube 2; the second side hole 21 is located between the aortic valve and the brachiocephalic trunk of the subject, and the second end of the second tube 2 is used to connect the ECMO tube arterial tube three-way joint to perfuse the oxygen-rich arterial blood in the ECMO tube arterial tube into the ascending aorta of the subject.

[0025] The first tube 1 and a part of the second tube 2 are integrally formed, and the integrally formed part 3 is from the first end of the second tube 2 to a position close to the second end of the second tube 2; the first end of the first tube 1 extends beyond the first end of the second tube 2 to form an extension 11.

[0026] The extension 11 of the first tube 1 is curled after entering the left ventricle of the subject, similar to a pigtail catheter.

[0027] The extension 11 is provided with a plurality of first side holes 12.

[0028] The plurality of first side holes 12 are distributed along the length direction of the extension 11 and face different directions.

[0029] The first end of the first tube 1 is provided with a first marker 13 to display the position of the first end of the first tube 1 under X-ray, so as to facilitate the user to judge that the first end of the first tube is in the appropriate position.

[0030] The second side hole 21 of the second tube 2 is provided with a second marker 22 to display the position of the second side hole 21 of the second tube 2 under X-ray, so as to facilitate the user to judge that the second side hole of the second tube is in the appropriate position.

[0031] The second ends of the first tube 1 and the second tube 2 are separated to facilitate the connection of the venous tube three-way joint or the arterial tube three-way joint of the ECMO tube, respectively.

[0032] The outer peripheral surface of the integrally formed part 3 of the first tube 1 and the second tube 2 is a smooth cylindrical surface.

[0033] The part 3 in which the first tube 1 and the second tube 3 are integrated is formed with a tapered transition at the first end of the second tube 2 to facilitate smooth placement of the entire tube into the blood vessel of the subject.

[0034] In use, first a guide wire is inserted into the left ventricle of the subject, then the first tube is sleeved over the guide wire, the extension section of the first tube is passed over the aortic valve into the left ventricle of the subject following the guide wire, then the guide wire is withdrawn, the extension section remains in the left ventricle, after the guide wire is withdrawn, the extension section bends in the left ventricle, so that the first side holes of the extension section are distributed as much as possible in various parts of the left ventricle to facilitate sufficient aspiration of blood in the left ventricle. The first end of the first tube and the second side holes of the second tube are confirmed to be in the appropriate position under the X-ray using the first marker and the second marker, i.e. the first marker is developed under the X-ray to be located in the left ventricle, and the second marker is developed under the X-ray to be located between the aortic valve and the brachiocephalic trunk. The second end of the first tube and the second end of the second tube are connected to the corresponding venous or arterial three-way tube of the ECMO tube, so that the blood in the left ventricle can be aspirated and supplied to the ascending aorta by means of the ECMO tube.

Claims

1. A double-lumen conduit for use across the aortic valve in patients with North-South syndrome undergoing transfemoral artery extracorporeal membrane oxygenation (ECMO) via femoral artery cannulation, comprising: First pipeline, second pipeline; Both the first and second ends of the first pipeline are open. The first end of the first tubing is used to cross the aortic valve of the subject's heart and enter the left ventricle. The second end of the first tubing is used to connect to the ECMO tubing venous tee to draw blood from the subject's left ventricle into the ECMO tubing venous line. The first end of the second pipeline is sealed, and the second end of the second pipeline is opened; a second side hole is formed near the first end of the second pipeline; The second side port is located between the aortic valve and the brachiocephalic trunk of the subject. The second end of the second tubing is used to connect to the ECMO tubing arterial tee to inject oxygen-rich arterial blood from the ECMO tubing into the subject's ascending aorta. The first pipeline and a portion of the second pipeline are integrally formed, the integrally formed portion extending from the first end of the second pipeline to a position close to the second end of the second pipeline; the first end of the first pipeline extends beyond the first end of the second pipeline, forming an extension section; The extension of the first tube coils up after entering the subject's left ventricle; A first marker is provided at the first end of the first conduit, and a second marker is provided at the second side hole of the second conduit, so as to use the first marker and the second marker to confirm under X-ray that the first end of the first conduit and the second side hole of the second conduit are in a suitable position; the suitable position is: the first marker is located in the left ventricle under X-ray, and the second marker is located between the aortic valve and the brachiocephalic trunk under X-ray.

2. The double-lumen conduit for the aortic valve according to claim 1, characterized in that: The extension section has multiple first side holes.

3. The double-lumen conduit for the aortic valve according to claim 2, characterized in that: The plurality of first side holes are distributed along the length of the extension section and face different directions.

4. The double-lumen conduit for the aortic valve according to claim 1, characterized in that: The second ends of the first and second pipelines are separate.

5. The double-lumen conduit for the aortic valve according to claim 4, characterized in that: The outer circumference of the portion formed by the first and second pipelines is a smooth cylindrical surface.

6. The double-lumen conduit for the aortic valve according to claim 1, characterized in that: In the portion where the first and second pipelines are integrally formed, a tapered transition section is formed at the first end of the second pipeline.

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