CN217162824U - Integral type artery cannula - Google Patents

Abstract

The utility model discloses an integral arterial cannula, which comprises a cannula body (1), a cannula (3) of an internal spring (2), a joint (4), a thread protective cap (5) and a blood return device (6), wherein the internal spring cannula of the arterial cannula consists of a pressure resistant section and a common section which are of an integral structure, the pressure resistant section consists of a small-diameter cannula (3) of the internal spring (2), and the common section consists of a thickened large-diameter cannula (3); the artery intubation blood returning device is composed of a guide core (7), a pinching claw (8), a guide post (9), a lining (10), a guide sleeve (11) and a handle (12) which are sequentially connected with a joint (4) of a large-diameter intubation. The utility model provides an artery intubate of open heart surgery, the built-in supporting spring of artery intubate (2) rigid structure of enhancement intubate that can be fine, the touch is felt well, easy operation grasps easily, brings the operation facility for the cardiac surgeon in the operation process, effectively reduces the operation risk.

Description

Integral type artery cannula

Technical Field

The utility model belongs to the field of medical equipment, which is used for the direct-view operation of the heart and is a product for the direct-view insertion of the heart into the ascending aorta.

Background

With the continuous improvement of living standard of people, diet is irregular, and overeating brings overload operation to organs such as heart, wherein heart disease is the first killer of human health, about 1/3 is caused by heart disease in the population that died from diseases every year all over the world, the incidence rate of the heart disease is always in a remarkable rising trend, about 350 million people die from heart disease every year in China, and most heart diseases need to be treated through surgical operation, so that the life of a patient is prolonged, and the life quality of the patient is improved. Cardiac surgery is performed without the support of extracorporeal circulation, and aortic intubation is a major component of the extracorporeal circulation system. The traditional heart operation is to split the sternum in the middle of the chest, intubate the aorta, the superior and inferior vena cava or the right atrium, establish extracorporeal circulation, drain the blood of the cardiotomy vein to an extracorporeal special device, exchange gas by an artificial method, adjust temperature and filter the blood, and then return the blood to a pulse system, aiming at maintaining the blood supply of tissues and organs of the whole body by using the extracorporeal circulation when the direct-vision operation of the heart is carried out, thereby creating a bloodless operation visual field for the direct-vision operation of the heart. At present, the commonly used artery intubation tube in clinic generally has the problems of blood softening and insufficient rigidity when meeting heat due to the reasons of design, materials, process and the like, and increases the difficulty of clinic intubation. Particularly for doctors with relatively low annual capital cost, the intubating accidents caused by repeated intubations or repeated replacement of the intubations frequently occur clinically, or the operation cannot be completed smoothly, or the patient is disabled, which undoubtedly brings great risks to the operation.

Disclosure of Invention

The utility model aims at providing an integral type artery intubation tube which is used for the open heart surgery. In extracorporeal circulation, the device is used to connect the patient and various devices to form a closed loop of the aorta and vena cava system. The rigid structure of the reinforced intubation tube, which can be well embedded with the supporting spring in the intubation tube, can avoid the intubation tube from causing pressure accumulation and leading to the medical risk of the interruption of the whole blood circulation system due to accidental folding, has good hand feeling, is easy to operate and grasp, and effectively reduces the operation risk.

The utility model discloses a purpose is realized by following technical scheme, an integral type artery intubate, intubate body (1) comprises intubate (3), joint (4), screw thread protective cap (5), blood return device (6) of built-in spring (2), artery intubate built-in spring intubate comprises withstand voltage section, ordinary section of a body structure, withstand voltage section comprises path intubate (3) of built-in spring (2), intubate (3) have the rigidity, can prevent that the intubate from warping. The common section consists of a thickened large-diameter insertion pipe (3); the artery intubation blood returning device is composed of a guide core (7), a pinching claw (8), a guide post (9), a lining (10), a guide sleeve (11) and a handle (12) which are sequentially connected with a joint (4) of a large-diameter intubation.

The blood returning device (6) is connected with the joint (4) and is provided with a lining (10) and a clamping claw (8), and the clamping claw end (8-2) and the joint connecting end (4-1) can play a role in double protection to prevent the lining (10) from falling off. A spring (2) is arranged in the arterial cannula, and the front end of the cannula (3) is made into an inclined plane port (3-1) which has the same angle with the medical short inclined plane stainless steel needle tube, so that the puncture is facilitated.

The artery intubation tube of the utility model adopts the intubatton with the built-in spring, has better rigidity, and can effectively prevent the intubation tube from deforming and twisting caused by blood negative pressure so as to prevent the intubation tube from being incapable of forming a complete blood extracorporeal circulation loop; the wall thickness has the biggest aperture, and clinically, through the support of leading the core, the distortion of pipe wall when can preventing to insert has effectually reduced the pressure drop under the maximum flow, and has reduced the destruction of blood cell, has less differential pressure value relative other intubate.

The front end of the built-in spring cannula of the arterial cannula of the utility model is made into the same angle with the medical short inclined plane stainless steel needle tube, which is beneficial to puncture and prevents the inner wall of the arterial blood vessel from being damaged when being inserted; the small-diameter intubation tube with the built-in spring in the pressure resistant section and the large-diameter intubation tube with the thickened common section of the product adopt an integrated forming process, so that the shearing stress and the blood cell damage of the pipeline to blood are effectively reduced.

The utility model discloses compare with traditional artery intubate, have good operation and feel, easy operation is convenient, can effectively solve the difficult scheduling problem of present intubate, and the intubate success rate can reach 100% to the cardiothoracic surgery doctor once to the operation risk has been reduced.

The product is manufactured through mold design and process, the front end wall thickness reaches an extremely thin level, the outer diameter of the front end of the cannula can be minimized on the premise of keeping the blood flow volume of the same inner diameter, the product is very suitable for children and infants, the aorta vessel fineness of the children and the infants is greatly improved, the common artery cannula is not easy to insert, and the traumatic caliber is reduced.

The product of the invention is further described below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a body view of the integrated arterial cannula of the present invention;

FIG. 2 is a drawing of the integrated arterial cannula blood return device of the present invention;

fig. 3 is a partially enlarged view a of fig. 1.

Fig. 4 is an assembly view of the integrated arterial cannula of the present invention.

Detailed Description

As shown in the figure, an integral arterial cannula is designed. The arterial intubation tube internal spring intubation tube comprises an intubation tube body (1) of an internal spring (2), a joint (4), a thread protection cap (5) and a blood return device (6), wherein the arterial intubation tube internal spring intubation tube is composed of a pressure-resistant section and a common section which are of an integrated structure, the pressure-resistant section is composed of a small-diameter intubation tube (3) of the internal spring (2), and the common section is composed of a thickened large-diameter intubation tube (3); the artery intubation blood returning device is composed of a guide core (7), a pinching claw (8), a guide post (9), a lining (10), a guide sleeve (11) and a handle (12) which are sequentially connected with a joint (4) of a large-diameter intubation.

The arterial cannula slowly inserts the inclined plane port (3-1) of the cannula (3) at the end of the built-in spring (2) into the cardiac artery end through thoracotomy until the required depth is reached, the arterial cannula is fixed, one hand holds the joint, the other hand slowly pulls out the handle (12), the handle (12) drives the guide core (7) to be pulled out when being pulled out, the guide core (7) is pulled out to sequentially pass through the built-in spring (2) small-diameter cannula (3) and the common section thickening large-diameter cannula (3) to observe whether bubbles exist in the led blood, if bubbles exist, the thread protective cap (5) on the joint (4) is unscrewed to remove the bubbles, the thread protective cap (5) is screwed back after the bubbles are discharged, then the common thickening section cannula is clamped by a hemostatic clamp, then the button part (8-1) of the pinching claw (8) is pinched, so that the pinching claw end (8-2) is separated from the joint connecting end (4-1), the whole blood return device (6) is pulled out, and the connector connecting end (4-1) is connected with the upper catheter of the instrument to complete the closed loop of the aorta and vena cava system.

Claims (3)

1. An integrated arterial cannula, comprising: the intubation tube body (1) consists of an intubation tube (3) with a built-in spring (2), a joint (4), a thread protective cap (5) and a blood return device (6), the arterial intubation tube with the built-in spring consists of a pressure-resistant section and a common section which are of an integrated structure, the pressure-resistant section consists of a small-diameter intubation tube (3) with the built-in spring (2), and the common section consists of a thickened large-diameter intubation tube (3); the artery intubation blood returning device is composed of a guide core (7), a pinching claw (8), a guide post (9), a lining (10), a guide sleeve (11) and a handle (12) which are sequentially connected with a joint (4) of a large-diameter intubation.

2. The integrated arterial cannula of claim 1, wherein: the blood returning device (6) is connected with the joint (4) and is provided with a lining (10) and a clamping claw (8), and the clamping claw end (8-2) and the joint connecting end (4-1) can play a role in double protection to prevent the lining (10) from falling off.

3. The integrated arterial cannula of claim 1, wherein: a spring (2) is arranged in the arterial cannula, and the front end of the cannula (3) is made into an inclined port (3-1) which is the same angle as the medical short inclined stainless steel needle tube, so that the puncture is facilitated.

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