CN-121987381-A - Medical experiment animal artery and vein intubation auxiliary device

Abstract

The invention discloses an arteriovenous cannula auxiliary device for medical experimental animals, which relates to the field of medical instruments and comprises a handle part, a transition part, an auxiliary tube and a tip part, wherein an illuminating lamp is arranged at the front end of the handle part, a power supply is arranged in the handle part, a switch is arranged on the handle part, the illuminating lamp, the power supply and the switch are connected in series, the transition part is arranged at the front end of the handle part, the transition part is bent forward in a gooseneck shape so that the front end of the transition part is staggered with the illuminating lamp, the auxiliary tube is arranged at the front end of the transition part, the rear end of the auxiliary tube is an inlet, the front end of the auxiliary tube is an outlet, the tip part is arranged at the front end edge of the auxiliary tube, the tip of the tip part is a solid round blunt head, and the tip side surface of the tip part is a 45-degree inclined surface. The device has simple integral structure, can effectively improve the success rate of the operation of the arteriovenous cannula and save the animal cost.

Inventors

• YU XINLONG
• WANG YUE

Assignees

• 石家庄医学高等专科学校

Dates

Publication Date

20260508

Application Date

20260330

Claims (5)

1. 1. The medical experimental animal arteriovenous cannula auxiliary device is characterized by comprising a handle part, a transition part, an auxiliary tube and a tip part; The front end of the handle part is provided with an illuminating lamp, the interior of the handle part is provided with a power supply, the handle part is provided with a switch, and the illuminating lamp, the power supply and the switch are connected in series; The auxiliary tube is arranged at the front end of the transition part, the rear end of the auxiliary tube is an inlet, the front end of the auxiliary tube is an outlet, the front end edge of the auxiliary tube is provided with the pointed part, the pointed end of the pointed part is a solid round blunt end, and the side face of the pointed end of the pointed part is a 45-degree inclined plane.
2. 2. The medical laboratory animal arteriovenous cannula assist device of claim 1 wherein said switch is disposed at the rear end of said handle portion.
3. 3. The medical laboratory animal arteriovenous cannula aid of claim 1, wherein the transition is an insulating material.
4. 4. The medical laboratory animal arteriovenous cannula aid of claim 1, wherein the aid tube is a tapered tube with a large back and a small front.
5. 5. The medical laboratory animal arteriovenous cannula aid according to claim 1, wherein the handle is provided with a plurality of finger grooves.

Description

Medical experiment animal artery and vein intubation auxiliary device Technical Field The invention relates to the field of medical equipment, in particular to an arteriovenous cannula auxiliary device for medical laboratory animals. Background In the prior art, when students take experiments (such as rabbit and rat) of animals (such as central venous pressure measurement, neurohumoral regulation of cardiovascular activities, influence of antihypertensive drugs on animal blood pressure, influence of verapamil on rat hemodynamics, hemorrhagic shock, comprehensive experiments for simulating acute pulmonary edema, arterial blood pressure and renal urinary function), the students often encounter experimental failure (about 20% -40% of clinical failure rate) caused by too slow intubation or vascular graft failure in the process of carrying out carotid intubation, femoral intubation, jugular intubation and femoral venous intubation on animals. And if students repeatedly go back and forth to the intubation tube, not only the blood vessel is broken and fails, but also a great amount of time is wasted, even experiments cannot be completed in lessons, the animal cost is high, and bad teaching effect accidents are easy to occur. The reasons for this are mainly the following: 1. In arteriovenous catheterization, when a blood vessel (diameter of about 2.5 mm) completes incision (the incision is one third of the diameter of the blood vessel) and blood flows outwards, an arterial catheterization or a venous catheterization is required to be quickly inserted, because the incision is opened (only 1-2 seconds) during blood flow, the action is required to be quick, if the blood is not inserted yet after the blood flow is finished, a glass needle (or a metal probe) is used for finding the incision (the incision is reduced due to the fact that the blood flows out of the blood vessel and the blood vessel is shrunken), and the arterial catheterization or the venous catheterization is inserted, and the success rate of catheterization is reduced. 2. Because the blood vessel of the animal is extremely thin (about 2.5 mm), the incision is smaller, and students rarely do similar operations, so that the failure rate of the students to grow hands and feet is increased; 3. the arterial cannula made of glass is heavy (easy to fall off from artery due to heavy weight), hard (hard and sharp, hollow can be used for cutting blood vessel and ligation is not firm and easy to fall off from artery), fragile and high in cost, and the arterial cannula made of plastic is easy to age, become brittle and hard (hard and sharp, hollow can be used for cutting blood vessel and ligation is not firm and easy to fall off from artery), and low in cost; 4. the functional experiment is not provided with an operating lamp shadowless lamp, the operating field is not bright, the arteriovenous cannula is particularly thin (the diameter is about 2.5 mm), and the user can take and insert the operating lamp shadowless lamp with the hands dissatisfied. Therefore, there is a need to design a device that can improve the success rate of arteriovenous cannulation of experimental animals. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide an arteriovenous cannula aid for medical laboratory animals. The medical experimental animal arteriovenous cannula auxiliary device is characterized by comprising a handle part, a transition part, an auxiliary tube and a tip part; The front end of the handle part is provided with an illuminating lamp, the interior of the handle part is provided with a power supply, the handle part is provided with a switch, and the illuminating lamp, the power supply and the switch are connected in series; The auxiliary tube is arranged at the front end of the transition part, the rear end of the auxiliary tube is an inlet, the front end of the auxiliary tube is an outlet, the front end edge of the auxiliary tube is provided with the pointed part, the pointed end of the pointed part is a solid round blunt end, and the side face of the pointed end of the pointed part is a 45-degree inclined plane. Further, the switch is disposed at the rear end of the handle portion. Further, the transition portion is made of an insulating material. Further, the auxiliary tube is a conical tube with a large back and a small front. Further, the handle is provided with a plurality of finger grooves. Compared with the prior art, the invention has the following beneficial effects: 1. The whole device is constructed into a pen-shaped structure, so that a handle part can be held like a pen when in use, and an unskilled person can operate the device, thereby being very convenient; 2. the front end of the handle part is provided with a light source, so that the surgical field can be illuminated, and the vascular incision can be found; 3. The front