Arterial infusion cannula for blood flow distribution and adjustment and application thereof

A technology of blood flow and intubation, applied in catheters and other directions, can solve problems such as difficulty in blood flow distribution and pressure regulation, easy damage to the axillary artery, subclavian vein, and right common carotid artery ischemia, so as to reduce limb ischemia time, shorten operation time, light blood damage effect

Inactive Publication Date: 2014-12-24
黄强
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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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  • Arterial infusion cannula for blood flow distribution and adjustment and application thereof
  • Arterial infusion cannula for blood flow distribution and adjustment and application thereof
  • Arterial infusion cannula for blood flow distribution and adjustment and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] 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.

[0047] 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

[0049] 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

[0051] 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 the 3 can be spherical crowns with side holes 4, with 6 symmetrically arranged side holes 4, and ensure that the total area of ​​each side hole 4 is greater than the maximum opening area of ​​the intubation tube body 1.

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Abstract

The invention provides an arterial infusion cannula for blood flow distribution and adjustment and an application thereof. The arterial infusion cannula comprises a cannula body at the blood supply end, and is characterized in that a proximal end tube, a distal end tube and a T-type or Y-type extracorporeal circulation infusion tube formed on an overall structure are included, the proximal end tube and the distal end tube are communicated with the cannula body and have flow distributing and pressure sharing functions, and an included angle is formed between the proximal end tube of the Y-type infusion tube and the cannula body of the blood supply end so that flow of injected blood can be distributed or adjusted. The arterial infusion cannula is used for whole-body artery infusion and deep hypothermic circulatory arrest selective cerebral perfusion when a right common carotid artery carries out extracorporeal circulation, and meanwhile can prevent ischemia of the right upper limb; the arterial infusion cannula can be used for femoral arteries to guarantee blood supply of the proximal end and the distal end and can prevent ischemia of lower limbs. Obviously, the arterial infusion cannula is convenient to operate and high in universality, defects of an existing arterial cannula are overcome, ischemia time of the brain or limbs of a patient is reduced, the success rate of aortic arch surgeries is improved and accordingly the arterial infusion cannula is widely used.

Description

[0001] technology field. [0002] The invention relates to the field of medical devices, in particular to a cannula for blood flow distribution and regulation for arterial perfusion 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 heart-lu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00
Inventor 黄强朱蕾黄晓
Owner 黄强
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