Common carotid artery cannula for adjusting and distributing blood perfusion flow and application

A technology of common carotid artery and blood flow, applied in common carotid artery cannulation and application fields, can solve the problems of difficult to achieve blood flow distribution and pressure regulation, easy damage to axillary artery, subclavian vein, right common carotid artery ischemia, etc. , to reduce limb ischemia time, shorten operation time, and reduce blood damage

Inactive Publication Date: 2014-12-17
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing technology usually uses a straight intubation tube with a length of 20 cm, one end of which is connected to the artificial heart-lung machine arterial perfusion tube, and the other end is inserted into the right axillary artery. Because the right axillary artery is located deep, it is difficult to expose and intubate, and it is easy to damage the axillary artery. Arteries, subclavian veins, axillary nerves, etc., the operation is more difficult
Moreover, during the operation, the patient’s right upper limb at the distal end was always in an ischemic state due to the intubation facing the proximal end; an artificial blood vessel with a diameter of 8 mm was used, one end was connected to the arterial perfusion tube of the artificial heart-lung machine, and the other end had to be sutured to the right axillary artery Or the right common carotid artery, and it takes 10 minutes or more to suture the artificial blood vessel, which may lead to ischemia of the right common carotid artery, which may cause irreversible ischemic brain damage in some patients
The disadvantage of the suture method can also lead to blood leakage from the anastomosis during heparinization; in addition, the arterial perfusion of different parts must use their own proprietary straight cannula or artificial blood vessel, which cannot be used universally. Inability or difficulty with cannulation for blood flow distribution and pressure regulation as needed

Method used

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  • Common carotid artery cannula for adjusting and distributing blood perfusion flow and application
  • Common carotid artery cannula for adjusting and distributing blood perfusion flow and application
  • Common carotid artery cannula for adjusting and distributing blood perfusion flow and application

Examples

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Effect test

Embodiment 1

[0036] Such as figure 1 , the simplest structure of the present invention includes the cannula main body 1 at the blood supply end, which is characterized in that it also includes two branch short tubes with shunt and partial pressure that communicate with the cannula main body 1—the proximal end tube 2 and the The distal end tube 3 is a medical perfusion plastic tube with a T-shaped structure on the overall structure. The internal diameters are all taken as 8mm, and the ends of the proximal end tube 2 and the distal end tube 3 form a 45° bevel 5 to facilitate intubation.

[0037] Usually, the length of the main body of the cannula is 20 cm, and the proximal end tube 2 and the distal end tube 3 are 1.5 cm and 1.0 cm, respectively.

Embodiment 2

[0039] Such as Figure 4 , the present invention includes a cannula main body 1 at the blood supply end, which is characterized in that it also includes a proximal end tube 2 and a distal end tube 3 communicating with the cannula main body 1, and the three are medical plastics with a Y-shaped structure on the same plane tube, and the proximal tube 2 and the cannula main body 1 at the blood supply end form an angle of 120°, that is, Q is an angle of 60° to reduce blood flow resistance and pump pressure, thereby ensuring perfusion flow and reducing blood damage.

Embodiment 3

[0041] Such as image 3 , the present invention includes a cannula main body 1 at the blood supply end, which is characterized in that it also includes two branch tubes that communicate with the cannula main body 1 and have a shunt and a partial pressure effect—a proximal end tube 2 and a distal end tube 3, forming The perfusion plastic tube for medical extracorporeal circulation with a T-shaped or Y-shaped structure in the overall structure, and the above-mentioned perfused plastic tube with a T-shaped or Y-shaped structure in the overall structure, its proximal end tube 2 and distal end tube The ends of 3 can be spherical crowns with side holes, and there are 6 symmetrically arranged side holes, and it is ensured that the total area of ​​each side hole is greater than the maximum opening area of ​​the intubation tube main body 1.

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Abstract

The invention relates to a common carotid artery cannula for adjusting and distributing blood perfusion flow and application. The common carotid artery cannula comprises a cannula body at a blood supply end and is characterized by further comprising a T-shaped or Y-shaped structured extracorporeal circulation perfusion plastic tube with a proximal end tube and a distal end tube for dividing flow and pressure, wherein the extracorporeal circulation perfusion plastic tube is communicated with the cannula body and formed on an overall structure. An included angle is formed between the proximal end tube of the Y-shaped structured perfusion tube and the cannula body at the blood supply end to distribute or adjust the blood perfusion flow. The common carotid artery cannula is applied to whole-body arterial perfusion and deep hypothermic circulatory arrest selective cerebral perfusion during extracorporeal circulation of a common carotid artery, and overcomes the shortcomings of an existing artery cannula and method. Carotid artery occlusion time is short during intubation and extubation, and cerebral blood supply is almost not affected, so that cerebral complications and the pain of patients are decreased. Obviously, the common carotid artery cannula is convenient to operate, surgical time is greatly shortened, so that cerebral ischemic time is shortened, the success rate of an aortic arch surgery is increased, and the common carotid artery cannula has a wide clinical application value.

Description

[0001] technology field. [0002] The invention relates to the field of medical devices, in particular to a common carotid artery cannula for regulating and distributing perfusion blood flow and its application. Background technique [0003] The existing technology usually uses a straight intubation tube with a length of 20 cm, one end of which is connected to the artificial heart-lung machine arterial perfusion tube, and the other end is inserted into the right axillary artery. Because the right axillary artery is located deep, it is difficult to expose and intubate, and it is easy to damage the axillary artery. Arteries, subclavian veins, and axillary nerves are more difficult to operate. Moreover, during the operation, the patient’s right upper limb at the distal end was always in an ischemic state due to the intubation facing the proximal end; an artificial blood vessel with a diameter of 8 mm was used, one end was connected to the arterial perfusion tube of the artificial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/14
Inventor 黄强刘旭徐平王涛杨林山林冠军王学智常青于仁斌吴玉辉吴淑芳刘静程华伟宇毅
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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