CN205988342U - A kind of arterial cannulation assembly - Google Patents

Abstract

The utility model discloses an arterial intubation assembly, which comprises a flexible tube, a blood vessel puncture needle and an intubation clamp. The inlet end of the flexible tube is fixedly connected with the blood vessel puncture needle, and the outlet end of the flexible tube is matched with a 2ml or 5ml syringe. The vascular puncture needle is tapered, and the flexible tube is provided with a drug delivery connector and a regulator, and the drug delivery connector is matched with a 2ml or 5ml syringe; the design is simple in structure, easy to clean, and will not block the intubation tube.

Description

An arterial cannula assembly

technical field

The utility model belongs to the field of medical animal experiment equipment, in particular to an arterial intubation assembly.

Background technique

In the process of animal experiments in medicine, many animal experiments require arterial intubation. Blood collection through arterial intubation can be used to establish experimental observation indicators and study changes in various physiological, pathological, and immune indicators in the body. It is a convenient and efficient method. Experimental research techniques. Among them, rat common carotid artery cannulation is the most common animal model of vascular cannulation.

After the commonly used arterial cannula is inserted into the blood vessel and the cannula and blood vessel are tied tightly with a thread, the surface of the cannula is smooth and it is not easy to be firmly ligated, so it is easy to shift or slip; , It will cause insufficient blood collection and coagulation in the cannula, and the intubation cannula is not accessible; moreover, it is inconvenient to control the blood flow rate of the cannula, which may easily cause rupture and hemolysis of red blood cells after flushing, which will affect the success or failure of the entire experiment.

Chinese utility model patent CN202314847U discloses an arterial cannula, including a connector, a hose, and a tapered puncture needle, wherein the connector is connected to one end of the hose, the tapered puncture needle is connected to the other end of the hose, and the tapered puncture needle The needles are horseshoe-shaped. But still there is the problem that the tapered puncture needle needs to be fixed with cotton thread, and the blood flow velocity cannot be controlled during blood collection.

Utility model content

In order to solve the above-mentioned defects of the prior art, the utility model provides a rat carotid artery intubation assembly which is easy to intubate, easy to fix, free from blockage and controllable in blood flow velocity.

In order to achieve the above purpose, the technical means adopted by the utility model is: an arterial cannula assembly, including a flexible tube, a vascular puncture needle and a cannula clip, the inlet end of the flexible tube is fixedly connected with the vascular puncture needle, and the The outlet end matches the syringe, the blood vessel puncture needle is tapered, the flexible tube is provided with a drug delivery connector and a regulator, and the drug delivery connector matches the syringe.

Further, the intubation clamp is fixed at the inlet end of the hose through a tether.

Further, the length of the vascular puncture needle is 2-4 cm, and the inner diameter is 0.1-0.2 mm.

Further, the hose is polyvinyl chloride plastic.

Further, the number of the intubation clips is two.

The beneficial effects of the utility model are:

1. The utility model overcomes the disadvantages of the traditional intubation, such as easy slippage and difficult fixation, easy blockage in the tube, and difficulty in cleaning after secondary use. It has the advantages of simple structure, convenient intubation operation and fixation, and easy cleaning.

2. The utility model is equipped with a drug delivery joint on the hose, which can be used to inject heparin saline diluent for "pipe flushing treatment" to prevent catheter blockage, or to inject other drugs for experimental intervention.

3. The utility model is equipped with a regulator on the flexible tube, which has the functions of switching the flexible tube and adjusting the blood flow velocity of the intubation tube.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: a blood vessel puncture needle 1; a drug delivery connector 2; a regulator 3; a hose 4; an outlet port 5;

The structure of the present utility model will be further described in detail below in conjunction with the description of the accompanying drawings and specific embodiments, and the accompanying drawings are simplified schematic diagrams.

detailed description

As shown in Figure 1, it is a schematic diagram of an arterial cannula provided by the utility model, including a flexible tube 4, a vascular puncture needle 1 and an intubation clamp 6, the flexible tube 4 is made of polyvinyl chloride plastic, and the flexible tube 4 is made of polyvinyl chloride plastic. The inlet end of 4 is fixedly connected with the vascular puncture needle 1, and the outlet end 5 of the hose is matched with a 2ml or 5ml syringe. The flexible pipe 4 is provided with a drug delivery joint 2 and a regulator 3, and the drug delivery joint 2 is matched with a 2ml or 5ml syringe, and the intubation clamp 6 can be fixed at the inlet end of the flexible tube 4 by a tether, and the intubation The number of clamps 6 is two. In this design, the intubation clamp is connected to the hose and made into an assembly with the hose, so as to facilitate the fixing of blood vessels and vascular puncture needles. Of course, the intubation clamp can also be stored separately and access.

For example, when intubating the common carotid artery of rats, the anesthetized rats were fixed supine on the operating table, the skin was cut longitudinally from the right side of the neck, the fascia and muscle space were bluntly separated with hemostatic forceps, and the right side was freed. Common carotid artery 1-1.5cm, arterial clip clamps both ends of the free artery, ophthalmology curved scissors 30°-45° angle cut a small hole on the separated artery segment, stir up the artery with a scalpel handle, The tapered vascular access needle is inserted into the artery; the right common carotid artery vessel and the vascular access needle are clamped and secured with two cannula clips at the inlet end of the hose.

During the above process, if it is necessary to inject heparin saline dilution or other drugs, it can be injected through the drug delivery connector. The drug delivery connector not only prevents the catheter from being blocked, but also is used for experimental intervention. The regulator can also be used to adjust the blood flow rate. After the blood is taken, the normal saline or heparin liquid can be drawn through the syringe and connected to the outlet end to flush the tube, which completes the flushing of the arterial cannula; it can be used for multiple Cannulation of various animals such as dogs, rabbits, rats, and mice can also be used for femoral, carotid artery and/or jugular, femoral vein vascular cannulation models.

The above schematically describes the utility model and its implementation, which is not restrictive, and what is shown in the accompanying drawings is only one implementation of the utility model, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, and without departing from the purpose of the invention of the utility model, without creatively designing a structural mode and an embodiment similar to the technical solution, it shall belong to the utility model. protected range.

Claims (5)

1. a kind of arterial cannulation assembly it is characterised in that：Press from both sides (6) including flexible pipe (4), angiographic neeclle (1) and intubation, described The entrance point of flexible pipe (4) is affixed with angiographic neeclle (1), and the port of export (5) of flexible pipe (4) is matched with syringe, and described blood vessel is worn Pricker (1) is tapered, and described flexible pipe (4) is provided with administration joint (2) and actuator (3), described administration joint (2) and syringe Match.

2. a kind of arterial cannulation assembly according to claim 1 it is characterised in that：It is solid that described intubation folder (6) passes through tether It is scheduled at the entrance point of flexible pipe (4).

3. a kind of arterial cannulation assembly according to claim 1 it is characterised in that：The length of described angiographic neeclle (1) For 2-4cm, internal diameter is 0.1-0.2mm.

4. a kind of arterial cannulation assembly according to claim 1 it is characterised in that：Described flexible pipe (4) is polyvinyl chloride plastic Material.

5. a kind of arterial cannulation assembly according to claim 1 it is characterised in that：The quantity of described intubation folder (6) is two Individual.