CN211327279U

CN211327279U - Disposable reducing type arterial cannula

Info

Publication number: CN211327279U
Application number: CN201921798578.0U
Authority: CN
Inventors: 厉蕙蕙; 罗志军; 周露茜
Original assignee: Beijing Meadows Medical Equipment Co Ltd
Current assignee: Beijing Meadows Medical Equipment Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-08-25
Anticipated expiration: 2029-10-24

Abstract

A disposable variable diameter type arterial cannula belongs to the technical field of external circulation of cardiothoracic surgery. The intubate front end inclined plane angle that the intubate filled the end is 135, and the pipe shaft outside of PVC reducing straight tube has portable round collar, and there is intubate depth of insertion scale mark in the pipe shaft outside of PVC reducing straight tube, and the rear end connecting band side exhaust hole of PVC reducing straight tube connects, takes side exhaust hole to connect the pipeline cap. The utility model has the advantages that the external diameter size from the rear end of the cannula to the tip end is gradually reduced to form pressure difference, which is beneficial to clinical perfusion; the bevel angle of the front end of the cannula is 135 degrees, a certain angle is formed when blood perfuses the aorta, and the impact on the wall of the aorta vessel is reduced; the outside of the cannula body is provided with a movable round collar, so that the perfusion insertion depth can be adjusted at any time; the outer circumference of the cannula tube body is provided with cannula insertion depth scale mark, so that the insertion depth can be conveniently and clearly seen in clinic at any time; the rear end of the variable-diameter arterial cannula is connected with the vent hole joint, so that the air can be effectively exhausted in time during clinical perfusion.

Description

Disposable reducing type arterial cannula

Technical Field

The utility model relates to a disposable reducing artery intubation tube, which belongs to the technical field of the external circulation of cardiothoracic surgery.

Background

With the rapid development of heart surgery at home and abroad, the disposable arterial cannula is widely applied to heart surgery, almost all congenital heart diseases, coronary heart diseases and valvular diseases can be cured by traditional extracorporeal circulation, and the disposable arterial cannula is an essential component in the extracorporeal circulation, is suitable for surgical operations with extracorporeal blood paths and is used for connecting an arterial system and an extracorporeal circulation pipeline of a patient and is already applied conventionally. The disposable arterial cannula of current homemade is mostly non-reducing formula arterial cannula, and in clinical application, non-reducing formula arterial cannula blood pressure is steady, is difficult to form and fills the pressure differential, is not convenient for some clinical infusions. The insertion depth of the cannula is not easy to adjust in the arterial intubation without a movable round collar, and the air is not convenient to exhaust when the device is used without an exhaust hole interface. In practical application, the disposable variable diameter type arterial cannula with the movable round collar and the scale mark is an important research direction in the industry.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a disposable variable diameter type arterial cannula.

Disposable reducing artery intubate, the one end external diameter of PVC reducing straight tube is greater than the other end external diameter of PVC reducing straight tube, diminishes from intubate rear end to most advanced external diameter size gradually, and the intubate front end inclined plane angle that the end was filled to the intubate is 135, and the stack of tubes outside of PVC reducing straight tube has portable round collar, and there is intubate depth of insertion scale mark in the stack of tubes outside of PVC reducing straight tube, and the rear end connecting band side exhaust hole of PVC reducing straight tube connects, takes side exhaust hole to connect the connecting pipeline cap.

The utility model has the advantages that: the outer diameter size from the rear end of the cannula to the tip end is gradually reduced to form pressure difference, thereby being beneficial to clinical perfusion; the bevel angle of the front end of the cannula is 135 degrees, a certain angle is formed when blood perfuses the aorta, and the impact on the wall of the aorta vessel is reduced; the outside of the cannula body is provided with a movable round collar, so that the perfusion insertion depth can be adjusted at any time; the outer circumference of the cannula tube body is provided with cannula insertion depth scale mark, so that the insertion depth can be conveniently and clearly seen in clinic at any time; the rear end of the variable-diameter arterial cannula is connected with an exhaust hole joint, so that the timely and effective exhaust during clinical perfusion is facilitated; the conduit cap can effectively prevent particles from entering the interior of the cannula.

Drawings

The invention itself, however, as well as many of the attendant advantages thereof, will be best understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein like reference numerals indicate like parts throughout the several views, and wherein:

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

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Obviously, many modifications and variations of the present invention based on the spirit of the present invention will be apparent to those skilled in the art.

It will be understood by those skilled in the art that, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description, "plurality" means two or more unless specifically limited otherwise.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art.

The following description is further illustrative in combination for the purpose of facilitating an understanding of the embodiments, and is not intended to limit the embodiments of the invention.

Example 1: as shown in fig. 1, disposable reducing type artery intubation contains a PVC reducing straight tube 1, a side exhaust hole joint 2, a pipeline cap 3, a movable round collar 4, an intubation perfusion end 5 and a depth scale mark 6, the outer diameter of one end of the PVC reducing straight tube 1 is larger than the outer diameter of the other end of the PVC reducing straight tube 1, the outer diameter size from the rear end of the intubation to the tip end is gradually reduced, the inclined plane angle of the front end of the intubation perfusion end 5 is 135 degrees, the movable round collar 4 is arranged outside the tube body of the PVC reducing straight tube 1, an intubation insertion depth scale mark 6 is arranged outside the tube body of the PVC reducing straight tube 1, the rear end of the PVC reducing straight tube 1 is connected with the side exhaust hole joint 2, and the side exhaust hole joint 2 is connected.

Example 2: as shown in figure 1, the disposable variable diameter type arterial cannula comprises a PVC variable diameter straight tube 1, a joint 2 with an exhaust hole, a pipeline cap 3, a movable round collar 4, a cannula perfusion end 5 and a depth scale mark 6.

The diameter-variable arterial cannula is used for one time, the outer diameter of the diameter-variable arterial cannula gradually decreases from the rear end to the perfusion end 5 to form a pressure difference, and clinical perfusion is facilitated; the inclined plane angle of the cannula perfusion end 5 is 135 degrees, a certain angle can be formed when blood perfuses the aorta, and the impact on the wall of the aorta vessel is reduced; the outside of the cannula body is provided with a movable round collar 4, so that the perfusion insertion depth can be adjusted at any time; the outer circumference of the cannula tube body is provided with cannula insertion depth scale lines 6, so that the insertion depth can be conveniently and clearly seen in clinic at any time; the rear end of the variable-diameter arterial cannula is connected with an exhaust hole joint 2, so that gas generated during perfusion can be effectively discharged in time during clinical perfusion conveniently, and the exhaust hole joint 2 is connected with a pipeline cap 3.

A disposable diameter-variable arterial cannula for the surgical operation with extracorporeal blood path is composed of a connecting tube between the arterial system of patient and extracorporeal circulation tube, and a perfusion tube for perfusing the oxygenated arterial blood back to human body.

Based on the above description of the structure of the embodiment, the basic operation process of the disposable variable diameter arterial cannula will be briefly described below.

The disposable variable diameter type arterial cannula is inserted into the ascending aorta, the inserting depth is judged by observing the scale mark 6, the pipeline cap 3 is removed after the insertion and the fixation, and the connector 2 with the vent hole is connected with the perfusion tube of the extracorporeal circulation pipeline.

As described above, although the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that many modifications are possible without substantially departing from the invention and its effects. Therefore, all such modifications are included in the scope of the present invention.

Claims

1. Disposable reducing artery intubation, its characterized in that PVC reducing straight tube's one end external diameter is greater than PVC reducing straight tube's other end external diameter, diminishes from intubate rear end to most advanced external diameter size gradually, and the intubate front end inclined plane angle that the intubate was filled the end is 135, and PVC reducing straight tube's pipe shaft outside has portable round collar, and there is intubate depth of insertion scale mark in PVC reducing straight tube's the pipe shaft outside, and PVC reducing straight tube's rear end connecting band side exhaust hole connects, takes side exhaust hole to connect the connecting line cap.