CN219185483U - Aortic cannula - Google Patents

Abstract

The utility model discloses an aortic cannula which comprises a first tube body and a second tube body which is obliquely butted with the first tube body, wherein one end, far away from the second tube body, of the first tube body is provided with a blood outflow port; the first tube body is provided with a strip-shaped blood outflow hole penetrating through the tube wall, and the blood outflow hole is arranged along the axial direction of the first tube body and extends to the blood outflow hole. According to the aortic cannula provided by the utility model, during perfusion, blood can flow out of the blood outflow opening at the end part of the first tube body and also can flow out of the blood outflow opening, so that bidirectional perfusion is realized, namely, part of blood flowing out of the blood outflow opening can be used for providing perfusion for the far end of a limb, and the occurrence of ischemic complications at the far end of the limb is avoided; the blood outflow hole is arranged along the axial direction of the first tube body and extends to the blood outflow hole, so that the damage of blood can be prevented.

Description

Aortic cannula

Technical Field

The utility model relates to the field of medical instruments, in particular to an aortic cannula.

Background

The aortic cannula is an indispensable instrument in the process of establishing extracorporeal circulation in cardiac surgery, and is generally placed into the aorta after the aortic wall is cut by an operator by using a surgical knife, so that the task of conveying the systemic circulation aerobic blood after cardiac arrest is realized.

Among the prior art, the clinical aortic cannula who uses of present domestic medical institution is mostly as shown in fig. 1, and it includes "L" shape and hollow structure's intubate body 1 that is used for inserting in the artery, and the terminal opening of intubate body 1 is pouring into mouth 2 promptly, and the head end opening of intubate body 1 connects blood pumping device during the use, through the transmission of intubate body 1, flows out blood from pouring into mouth 2 and can follow the direction of insertion inflow into the artery.

However, the aortic cannula is of a unidirectional perfusion structure, and the distal vessel at the cannula position is blocked until the operation is finished; because the cardiac great vessel operation is usually very complicated, the blocking time of the far-end vessel is long, and the far-end limb can generate a large amount of anaerobic glycolysis products such as lactic acid and the like due to long ischemia time, and even thrombosis and functional damage of far-end tissues and organs cause obvious adverse effects on postoperative rehabilitation of patients.

Thus, there is a need for improvements over existing aortic cannulas.

Disclosure of Invention

Accordingly, the present utility model is directed to an aortic cannula with a bi-directional perfusion structure, which can provide perfusion for the distal end of the limb, and avoid ischemic complications at the distal end of the limb.

In order to achieve the above purpose, the utility model provides an aortic cannula, which comprises a first tube body and a second tube body which is obliquely butted with the first tube body, wherein one end of the first tube body far away from the second tube body is a blood outflow port; the first tube body is provided with a strip-shaped blood outflow hole penetrating through the tube wall, and the blood outflow hole is arranged along the axial direction of the first tube body and extends to the blood outflow hole.

Compared with the prior art, the utility model has the following beneficial technical effects:

according to the aortic cannula provided by the utility model, the long-strip-shaped blood outflow hole is formed in the first tube body, and when in perfusion, blood can flow out of the blood outflow hole at the end part of the first tube body, and can flow out of the blood outflow hole, so that bidirectional perfusion is realized, namely, part of blood flowing out of the blood outflow hole can be used for providing perfusion for the distal end of a limb, and the occurrence of ischemic complications at the distal end of the limb is avoided; the blood outflow hole is arranged along the axial direction of the first tube body and extends to the blood outflow hole, so that the damage of blood can be prevented.

Meanwhile, the technical scheme of the utility model also aims at the technical problem that the prior art is too single, and provides a solution which is obviously different from the prior art.

As a further improvement of the technical scheme of the utility model, the length of the blood outflow hole is equal to or greater than the length of the first tube body.

As a further improvement of the technical scheme of the utility model, the blood outflow hole is arranged at the bottom of the first tube body.

As a further improvement of the technical scheme of the utility model, the width of the blood outflow hole is 2.0-10.0 mm.

As a further improvement to the technical scheme of the utility model, the included angle between the first pipe body and the second pipe body is 120-170 degrees.

As a further improvement of the technical scheme of the utility model, the outer diameter of the first pipe body is 5.0 mm-20.0 mm.

As a further improvement to the technical scheme of the utility model, the first pipe body and the second pipe body are integrally formed.

As a further improvement to the technical scheme of the utility model, the side edges of the first tube body, which are positioned at the two sides of the blood outflow hole, are of smooth transition structures.

Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a front view of a prior art aortic cannula;

FIG. 2 is a bottom view of an aortic cannula provided in an embodiment of the present application;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a sectional view of B-B in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

Examples

As shown in fig. 2 to 4: the embodiment provides an aortic cannula, which comprises a first tube body 3 and a second tube body 4 obliquely butted with the first tube body 3, wherein one end, far away from the second tube body 4, of the first tube body 3 is provided with a blood outflow port 5; the first tube body 3 is provided with a long blood outflow hole 6 penetrating through the tube wall, and the blood outflow hole 6 is arranged along the axial direction of the first tube body 3 and extends to the blood outflow opening 5.

The first tube body 3 and the second tube body 4 can be made of medical rubber tubes; preferably, the first pipe body 3 and the second pipe body 4 are integrally formed. The angle between the first tube 3 and the second tube 4 may be determined according to the needs, for example, the included angle C between the first tube 3 and the second tube 4 may be 120 ° to 170 °. The first pipe body 3 and the second pipe body 4 are both straight pipes and hollow structures; in use, the first tube 3 is inserted into the aorta of a patient, and the head end of the second tube 4 is connected with a blood pumping device.

By arranging the long-strip-shaped blood outflow hole 6 on the first tube body 3, blood can flow out of the blood outflow hole 6 from the end part of the first tube body 3 during perfusion, and can flow out of the blood outflow hole 6, so that bidirectional perfusion is realized, namely, part of blood flowing out of the blood outflow hole 6 can provide perfusion for the distal end of a limb, and the occurrence of ischemic complications at the distal end of the limb is avoided; the blood outflow hole 6 is provided in the axial direction of the first tube body 3 and extends to the blood outflow port 5, which is advantageous in preventing destruction of blood.

In addition, the elongated blood outflow openings 6 facilitate blood removal, spreading the blood to reduce pressure when flowing into the aorta.

In this embodiment, the length of the blood outflow hole 6 may be equal to the length of the first tube 3, and the blood outflow hole 6 is formed along the length direction of the first tube 3; of course, the length of the blood outflow opening 6 may also be greater than the length of the first tube body 3, in which case the blood outflow opening 6 also extends to the second tube body 4 or to an inclined transition between the first tube body 3 and the second tube body 4.

In this embodiment, the blood outflow hole 6 is disposed at the bottom of the first tube 3 to improve the blood outflow efficiency. The width W of the blood outflow hole 6 may be 2.0 to 10.0mm, and the outer diameter D of the first tube 3 may be 5.0 to 20.0mm as a corresponding range.

In this embodiment, the side edges of the first tube body 3 at two sides of the blood outflow hole 6 are smooth transition structures. As shown in fig. 4, the longitudinal section of the first pipe body 3 is in a "C" shape; the two ends of the C-shaped opening are of circular arc structures, namely smooth transition structures, so that damage to the inner wall of the aorta can be prevented or reduced.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (7)

1. An aortic cannula comprises a first tube body and a second tube body which is obliquely butted with the first tube body, wherein one end, far away from the second tube body, of the first tube body is provided with a blood outflow port; the method is characterized in that:

the first tube body is provided with a strip-shaped blood outflow hole penetrating through the tube wall, and the blood outflow hole is arranged along the axial direction of the first tube body and extends to the blood outflow hole; the length of the blood outflow hole is equal to or greater than the length of the first tube body.

2. An aortic cannula as claimed in claim 1, wherein:

the blood outflow hole is arranged at the bottom of the first tube body.

3. An aortic cannula as claimed in claim 1, wherein:

the width of the blood outflow hole is 2.0-10.0 mm.

4. An aortic cannula as claimed in claim 1, wherein:

the included angle between the first pipe body and the second pipe body is 120-170 degrees.

5. An aortic cannula as claimed in claim 1, wherein:

the outer diameter of the first pipe body is 5.0 mm-20.0 mm.

6. An aortic cannula as claimed in claim 1, wherein:

the first pipe body and the second pipe body are integrally formed.

7. An aortic cannula according to any one of claims 1 to 6, wherein:

the side edges of the first tube body, which are positioned at the two sides of the blood outflow hole, are smooth transition structures.

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