CN213158829U

CN213158829U - Double-cavity airbag V-V ECMO cannula

Info

Publication number: CN213158829U
Application number: CN202021048899.1U
Authority: CN
Inventors: 宋波
Original assignee: Peking University First Hospital
Current assignee: Peking University First Hospital
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-05-11
Anticipated expiration: 2030-06-09

Abstract

The utility model relates to a double-cavity airbag V-V ECMO intubation, which comprises an intubation main body, a first tube cavity and a second tube cavity, wherein the first tube cavity and the second tube cavity are connected into a whole in parallel; a first external lumen connected to the rear end of the first lumen; and a second external lumen connected to the rear end of the second lumen; a blood supply side hole is formed in the side wall, close to the front end, of the first tube cavity; the front end of the second tube cavity is longer than the front end of the first tube cavity, the front end of the second tube cavity is provided with a tip hole, a first side hole is formed in the side wall, close to the front end, of the second tube cavity, and a second side hole is formed in the side wall, close to the rear end, of the second tube cavity; the first air bag is arranged outside the first and second tube cavities between the blood supply side hole and the second side hole; the second gasbag sets up on being located the second lumen at the rear of first side opening, the utility model discloses utilize first gasbag and second gasbag to block the upper and lower vena cava backward flow and go into the right atrium, realize the abundant drainage of venous blood, avoid oxygenation blood recirculation, improve ECMO work efficiency.

Description

Double-cavity airbag V-V ECMO cannula

Technical Field

The utility model relates to a double-cavity airbag V-V ECMO (venous-venous extracorporeal membrane oxygenation) intubation tube, belonging to the field of medical appliances.

Background

V-V ECMO is mainly applied to the treatment of end-stage respiratory failure and ARDS caused by various reasons, and plays an important role in the treatment of the current critically ill patients with new coronary pneumonia. The V-V ECMO is used for leading venous blood out of a patient, oxygenating by a membrane lung and then infusing back into the patient through a vein to improve oxygen supply of the body.

At present, a mainstream V-V ECMO intubation in China generally adopts a single-cavity intubation tube to be intubated to the junction of an upper cavity vein and a right atrium through an internal jugular vein to serve as a blood supply tube, and another single-cavity intubation tube is inserted to the junction of a lower cavity vein and the right atrium through a femoral vein to serve as a drainage tube. The two cannulas are opposite in face to face, so that serious oxygenation blood recirculation phenomenon exists, a large amount of oxygenation blood is led out, the use effect of ECMO is reduced, the circulation flow has to be increased for improving the oxygenation effect, blood damage is aggravated, inflammatory reaction is increased, and organ hypoxia injury is aggravated. The prior foreign products have different shapes, have double-cavity tubes but no air bag, and can not overcome the problem of oxygenated blood recirculation and improve the ECMO efficiency.

Disclosure of Invention

To the problem, the utility model aims at providing a two-chamber gasbag V-V ECMO intubate can avoid oxygenation blood recirculation, improves ECMO work efficiency, can reduce circulation flow simultaneously, very favourable to the reduction of patient's breathing machine parameter, recovered smoothly.

In order to achieve the above object, the utility model discloses a following technical scheme, a two-chamber gasbag V-V ECMO intubate, include: the intubation main body comprises a first lumen and a second lumen which are connected into a whole in parallel; a first external lumen connected to a rear end of the first lumen; and a second external lumen connected to a rear end of the second lumen; wherein the first external connecting tube cavity and the second external connecting tube cavity are arranged in a split manner; the front end of the first lumen is closed, and a blood supply side hole is formed in the side wall, close to the front end, of the first lumen; the front end of the second tube cavity is longer than the front end of the first tube cavity, the front end of the second tube cavity is provided with a tip hole, a first side hole is formed in the side wall, close to the front end, of the second tube cavity, and a second side hole is formed in the side wall, close to the rear end, of the second tube cavity;

a first balloon disposed outside of the first and second lumens between the donor side hole and the second side hole;

a second balloon disposed on the second lumen behind the first side hole.

Further, this two-chamber gasbag V-V ECMO intubate still includes first gasbag valve and second gasbag valve, first gasbag valve passes through first connecting pipe and first gasbag intercommunication, first connecting pipe inlays to be established in the intubate main part, second gasbag valve pass through the second connecting pipe with second gasbag intercommunication, the second connecting pipe inlays to be established in the intubate main part.

Further, the first side hole and the second side hole are both a plurality of through holes formed in the side wall of the second tube cavity.

Further, the double-cavity balloon V-V ECMO cannula also comprises a tube core with a hollow inner part.

Further, a color mark is arranged at the rear end of the first lumen, and a metal mark is arranged at the blood supply side hole.

The utility model discloses owing to take above technical scheme, it has following advantage: the utility model provides a double-chamber gasbag V-V ECMO intubate, including intubate main part, first gasbag and second gasbag, intubate main part mainly includes first lumen and second lumen as an organic whole of parallel connection, the second gasbag sets up in the outside at first lumen and second lumen between blood supply side opening and second side opening, the second gasbag sets up on the second lumen that is located the rear of first side opening, inflated first gasbag and second gasbag can block upper and lower chamber venous return and enter right atrium, overcome the problem that the intubate glues the wall, realize the abundant drainage of venous blood, avoid oxygenated blood recirculation, greatly improve ECMO work efficiency, improve patient's oxygenation rapidly, protect the organ, alleviate inflammatory response, thereby improve ECMO's treatment success rate, and simultaneously, can reduce circulation flow, help reducing breathing machine parameter in time, avoid relevant lung injury, is beneficial to the rehabilitation of lung diseases.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of the tube core of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and examples. It is to be understood, however, that the drawings are provided solely for the purposes of promoting an understanding of the invention and that they are not to be construed as limiting the invention.

It should be noted that all the directional indicators (such as the near end, the far end, the front end, the rear end, etc.) in the present embodiment are only used to explain the relative positional relationship, the motion situation, etc. of the components in the general operation posture, that is, the side close to the operator is referred to as the near end or the rear end, and the side far away from the operator is referred to as the far end or the front end; if the operating posture changes, the directional indication changes accordingly.

As shown in fig. 1, the present embodiment provides a double-lumen balloon V-V ECMO cannula, which includes a cannula body 1, a first balloon 2 and a second balloon 3;

wherein the cannula body 1 comprises: a first lumen 11 and a second lumen 12 connected in parallel as one body; a first external lumen 13 connected to the rear end of the first lumen 11; and a second external connection tube cavity 14 connected to the rear end of the second tube cavity 12, wherein the first external connection tube cavity 13 and the second external connection tube cavity 14 are arranged in a split manner; the front end of the first lumen 11 is closed, and a blood supply side hole 111 is formed on the side wall of the first lumen 11 close to the front end; the front end of the second lumen 12 is longer than the front end of the first lumen 11, the front end of the second lumen 12 is provided with a tip hole 121, the side wall of the second lumen 12 close to the front end thereof is provided with a first side hole 122, and the side wall of the second lumen 12 close to the rear end thereof is provided with a second side hole 123;

the first balloon 2 is disposed outside the first lumen 11 and the second lumen 12 between the donor-side hole 111 and the second side hole 123,

the second balloon 3 is disposed on the second lumen 12 located rearward of the first side hole 122.

In the above embodiment, preferably, the double-chamber balloon V-V ECMO cannula further includes a first balloon valve 4 and a second balloon valve 5, the first balloon valve 4 is communicated with the first balloon 2 through a first connecting tube, the first connecting tube is embedded in the cannula main body 1, the second balloon valve 5 is communicated with the second balloon 2 through a second connecting tube, and the second connecting tube is embedded in the cannula main body 1.

In the above embodiment, preferably, the first side hole 122 and the second side hole 123 are each a plurality of through holes opened on the side wall of the second lumen 12.

In the above embodiment, preferably, the double lumen balloon V-V ECMO cannula further comprises an inner hollow core 6, as shown in figure 2.

In the above embodiment, preferably, a color mark is provided at the rear end of the first lumen 11 to facilitate the medical staff to judge the direction of the blood-supply side hole 111, and a metal mark is provided at the blood-supply side hole 111, where the metal mark may be a metal ring provided around the blood-supply side hole 111 to facilitate the identification of the direction of the blood-supply side hole 111 under ultrasound.

The utility model provides a two-chamber gasbag V-V ECMO intubate has different length specifications to satisfy different clinical demands, for example, jugular vein or femoral vein catheterization.

The double-cavity balloon V-V ECMO cannula provided by the embodiment has the following working principle:

a guide wire penetrates through the tube core 6, the tube core 6 is arranged in the second tube cavity 12, the right atrium is inserted through a jugular vein (or a femoral vein) under the guide effect of the guide wire, the front end of the second tube cavity 2 extends into a lower cavity (or an upper cavity) vein, the position and the direction of the blood supply side hole 111 can be confirmed through TEE (transesophageal echocardiogram) or according to the color mark of the rear end of the first tube cavity 11, so that the blood supply side hole 111 is in the right atrium and is opposite to the tricuspid valve as far as possible, the tube core 6 is withdrawn, and the tube placement is finished; then, the first external connection lumen 13 and the second external connection lumen 14 are respectively connected with corresponding external pipelines, the first air bag 2 and the second air bag 3 are respectively inflated through the first air bag valve 4 and the second air bag valve 5, and the ECMO circulation starts to operate, because the first air bag 2 is positioned at the junction of the superior vena cava and the right atrium or at the position close to the right atrium, and the second air bag 3 is positioned at the junction of the inferior vena cava and the right atrium or at the position close to the right atrium, when the first air bag 2 and the second air bag 3 are inflated, the backflow between the superior vena cava and the right atrium, and the oxygenation between the inferior vena cava and the oxygenation between the superior vena cava and the right atrium is blocked, so that the blood in the superior vena cava is led out through the second side hole 123 and the blood in the inferior vena is led out through the tip hole 121 and the second side hole 122, and flows back to the right atrium through the blood supply side hole 111 after the oxygenation outside the, protecting organs and relieving inflammatory reaction, thereby improving the cure success rate of ECMO; meanwhile, the circulation flow can be reduced, the breathing machine parameters can be reduced in time, the related lung injury can be avoided, and the recovery of lung diseases can be facilitated; moreover, the influence of the sticking wall of the cannula on drainage can be overcome; furthermore, the utility model discloses only through jugular vein or femoral vein put the pipe can, reduce traditional puncture position into one by two, the wound is littleer, and local hemorrhage is few, and the infection risk is lower, simultaneously, compares in traditional tub, the utility model discloses the intubate has advantages such as the operation is simplified, easily masters.

The present invention has been described only with reference to the above embodiments, and the structure, arrangement position and connection of the components may be changed. On the basis of the technical scheme of the utility model, the all sides according to the utility model discloses the principle is all not excluded to the improvement that individual part goes on or the transform of equivalence the utility model discloses a protection scope is outside.

Claims

1. A dual lumen balloon V-V ECMO cannula comprising:

the intubation main body comprises a first lumen and a second lumen which are connected into a whole in parallel; a first external lumen connected to a rear end of the first lumen; and a second external lumen connected to a rear end of the second lumen; wherein the first external connecting tube cavity and the second external connecting tube cavity are arranged in a split manner; the front end of the first lumen is closed, and a blood supply side hole is formed in the side wall, close to the front end, of the first lumen; the front end of the second tube cavity is longer than the front end of the first tube cavity, the front end of the second tube cavity is provided with a tip hole, a first side hole is formed in the side wall, close to the front end, of the second tube cavity, and a second side hole is formed in the side wall, close to the rear end, of the second tube cavity;

a second balloon disposed on the second lumen behind the first side hole.

2. The dual-lumen balloon V-V ECMO cannula of claim 1, further comprising a first balloon valve and a second balloon valve, wherein the first balloon valve is in communication with the first balloon through a first connecting tube, the first connecting tube is embedded in the cannula body, the second balloon valve is in communication with the second balloon through a second connecting tube, and the second connecting tube is embedded in the cannula body.

3. The dual lumen balloon V-V ECMO cannula of claim 1, wherein the first side port and the second side port are each a plurality of through holes formed in a side wall of the second lumen.

4. The dual lumen balloon V-V ECMO cannula of claim 1 further comprising an inner hollow core.

5. The double lumen balloon V-V ECMO cannula of claim 1, wherein a color marker is provided at the back end of said first lumen and a metal marker is provided at said donor side aperture.