CN219251285U

CN219251285U - Rat trachea cannula indicator

Info

Publication number: CN219251285U
Application number: CN202222567381.4U
Authority: CN
Inventors: 李娟�; 方訸平; 任洛; 刘恩梅
Original assignee: Childrens Hospital of Chongqing Medical University
Current assignee: Childrens Hospital of Chongqing Medical University
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-06-27
Anticipated expiration: 2032-09-27

Abstract

The utility model belongs to the technical field of animal experiment instruments, and particularly discloses a rat trachea cannula indicator, which comprises: the device comprises a connecting pipe and a transparent U-shaped pipe, wherein one end of the connecting pipe is communicated with one end of the U-shaped pipe in a sealing way, and the other end of the connecting pipe can be communicated with the tail end of an endotracheal tube in a sealing way; the U-shaped pipe is formed by bending and fixing an infusion hose with an infusion drip cup into a U shape, and the infusion drip cup is positioned at one side of the U-shaped pipe connected with the connecting pipe; the U-shaped pipe is filled with colored liquid. The indicator connecting pipe is connected to the tail end of the tracheal intubation, and whether the intubation is successful can be rapidly, efficiently and accurately judged by observing the fluctuation condition of the colored liquid level at the bottom of the U-shaped pipe; meanwhile, the position of the infusion drip cup can prevent colored liquid from being inhaled by a large/small mouse by mistake. The indicator is very convenient to use, can be operated by one hand, has low manufacturing cost and can be recycled.

Description

Rat trachea cannula indicator

Technical Field

The utility model relates to the technical field of animal experiment instruments, in particular to a rat trachea cannula indicator.

Background

Since respiratory diseases are more and more present, animal models of rats and mice are more and more widely used in view of limitations of human body tests. Respiratory disease models often involve administration via airways, and currently, tracheal intubation methods are often used to build animal models for pathogens or drugs to study disease and related mechanisms. However, whether the tracheal intubation is successful or not is often required to be judged by experimenters through experience according to the prior art and method, and the rapid, visual and accurate can not be achieved. Therefore, if a method or instrument capable of rapidly, efficiently and accurately judging whether the tracheal intubation of the rat/mouse is successful or not can be developed, the operation of an experimenter is facilitated, the possibility of misplug is reduced, the drug administration accuracy is improved, and animal welfare and experimental results are facilitated to be stable.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model aims to provide a rat tracheal intubation indicator, which can help to judge whether tracheal intubation is successful, avoid misplug, and increase experimental operation accuracy.

In order to achieve the above and other related objects, the present utility model provides a rat tracheal cannula indicator, which comprises the following basic scheme: the indicator includes: the device comprises a connecting pipe and a transparent U-shaped pipe, wherein one end of the connecting pipe is communicated with one end of the U-shaped pipe in a sealing way, and the other end of the connecting pipe can be communicated with the tail end of an endotracheal tube in a sealing way; the U-shaped pipe is formed by bending and fixing an infusion hose with an infusion drip cup into a U shape, and the infusion drip cup is positioned at one side of the U-shaped pipe connected with the connecting pipe; the U-shaped pipe is filled with colored liquid.

The working principle of the basic scheme is as follows: the method for using the indicator and judging whether the tracheal intubation of the rat is successful or not comprises the following steps: after the rat or the mouse completes the trachea cannula, the free end (i.e. the front end) of the indicator connecting pipe is connected to the tail end of the trachea cannula; observing the condition of colored liquid level fluctuation at the bottom of the U-shaped pipe; if the fluctuation amplitude of the liquid level is large and the fluctuation frequency is consistent with the respiration frequency of the rats and the mice, the successful insertion into the trachea is indicated; if the liquid level fluctuation amplitude is tiny, the erroneous insertion into the esophagus is indicated. By the method, whether the intubation is successful or not can be rapidly, efficiently and accurately judged, and after the judgment is completed, the indicator can be taken down, and the next respiratory tract administration operation can be continued. The U-shaped tube is manufactured by selecting the infusion hose, and the infusion hose is convenient to acquire in a laboratory or clinic, has low cost and can be recycled; meanwhile, the infusion hose with the infusion drip cup is adopted, and the position of the infusion drip cup is arranged at one side close to the connecting pipe, so that colored liquid can be prevented from being inhaled into the lung by a large or small mouse by mistake.

Further, the connecting pipe is a syringe needle cylinder, the syringe needle cylinder comprises a front end used for connecting a needle head and a rear end used for inserting a piston, the front end can be inserted into the tail end of the trachea cannula and is communicated with the tail end of the trachea cannula in a sealing way, and the rear end is communicated with one end of the U-shaped pipe in a sealing way through a hose. The syringe needle cylinder is selected as the connecting pipe in the application, firstly, the syringe needle cylinder is equipment which is convenient to acquire in a laboratory or clinic, the cost is low, the syringe needle cylinder can be recycled, and secondly, the front end of the syringe needle cylinder can be directly inserted into the tail end of the tracheal cannula, and the air tightness of the connection is ensured.

Further, the connecting pipe is 1-10 mL of injector needle cylinder, preferably 1mL of injector needle cylinder. The specification of the selected syringe needle cylinder is not too large, otherwise, the syringe needle cylinder is not easy to be communicated with the tail end of the tracheal cannula in a sealing way with the U-shaped hose.

Further, the connecting pipe is a 1mL syringe needle cylinder, and the infusion hose and the connecting pipe are communicated together in a sealing way through an infusion set bottle stopper puncture outfit. The 1mL syringe needle cylinder and the infusion hose can be communicated together in a sealing way only by using the infusion set bottle stopper puncture outfit, but the syringe needle cylinders with other specifications cannot be communicated in a sealing way only by using the infusion set bottle stopper puncture outfit, and can be communicated in a sealing way by adopting other pipeline connection modes.

Further, the height of the U-shaped tube is 8-11 cm.

Further, the length of the infusion hose is 25-30 cm.

Further, the U-shaped tube is filled with a colored liquid in a volume of 150 to 200. Mu.L.

Further, the mode of bending and fixing the infusion hose into a U shape comprises the following steps: the infusion hose is bent into a U shape, and the U-shaped infusion hose is bound by an adhesive tape or a rope, so that the U-shaped infusion hose is kept in a U-shaped state.

Further, the adhesive tape is a medical adhesive tape or a transparent adhesive tape.

Further, the colored liquid includes trypan blue solution, colored ink, but is not limited thereto.

As described above, the rat tracheal cannula indicator of the utility model has the following beneficial effects:

the utility model provides an indicator for the trachea cannula of rats and mice, and the indicator provides an intuitive basis for whether the trachea cannula is successful or not, the discrimination accuracy can reach 100%, and the accuracy of airway administration can be improved. Meanwhile, the indicator is very convenient to use, can be operated by one hand, is low in manufacturing cost and can be recycled.

Drawings

Fig. 1 is a schematic structural view of a rat tracheal cannula indicator according to an embodiment of the present application.

Description of the reference numerals

A connecting pipe 1, an infusion hose 2, an infusion drip cup 3 and a bottle stopper puncture outfit 4.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex. The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

In order to rapidly and accurately judge whether the tracheal intubation of the rat and the mouse is successful, the accuracy of airway administration is improved, and the possibility of misplug is reduced, as shown in fig. 1, an embodiment of the application provides a tracheal intubation indicator for the rat and the mouse, which comprises: the device comprises a connecting pipe 1 and a transparent U-shaped pipe, wherein one end of the connecting pipe 1 is communicated with one end of the U-shaped pipe in a sealing way, and the other end of the connecting pipe 1 can be communicated with the tail end of an endotracheal tube in a sealing way; the U-shaped tube is formed by bending and fixing an infusion hose 2 with an infusion drip cup 3 into a U shape, and the infusion drip cup 3 is positioned at one side (namely the left side shown in figure 1) of the U-shaped tube connected with the connecting tube; the U-shaped tube is filled with colored liquid.

The method for judging whether the tracheal intubation of the rat is successful by using the indicator provided by the embodiment comprises the following steps: after the rat or the mouse completes the trachea cannula, the free end (i.e. the front end) of the indicator connecting pipe is connected to the tail end of the trachea cannula; the U-shaped pipe can be held by hand to be in a vertical state or slightly inclined or horizontally placed, and the condition of colored liquid level fluctuation at the bottom of the U-shaped pipe is observed; if the fluctuation amplitude of the liquid level is large and the fluctuation frequency is consistent with the breathing frequency of the rat/mouse, the successful insertion of the trachea is indicated; if the liquid level fluctuation amplitude is tiny, the erroneous insertion into the esophagus is indicated. By the method, whether the intubation is successful or not can be rapidly, efficiently and accurately judged, and after the judgment is completed, the indicator can be taken down, and the next respiratory tract administration operation can be continued.

In the embodiment, the infusion hose 2 is selected to manufacture the U-shaped tube, because the infusion hose 2 is a device which is convenient to acquire in a laboratory or clinic, has low cost and can be recycled; meanwhile, by adopting the infusion hose 2 with the infusion drip cup 3 and setting the position of the infusion drip cup 3 at the side close to the connecting tube 1 (i.e. the left side as shown in fig. 1), colored liquid can be prevented from being inhaled into the lung by a large/small mouse by mistake.

In another embodiment of the present application, as shown in fig. 1, the connection tube 1 is a syringe barrel including a front end (i.e., a lower end as shown in fig. 1) for connecting a needle and a rear end (i.e., an upper end as shown in fig. 1) for inserting a piston, the front end being capable of being inserted into and in airtight communication with a distal end of an endotracheal tube, the rear end being in airtight communication with one end of a U-shaped tube through a hose. In the embodiment, the syringe needle cylinder is selected as the connecting pipe 1, firstly, the syringe needle cylinder is equipment which is convenient to acquire in a laboratory or clinic, the cost is low, the syringe needle cylinder can be recycled, and secondly, the front end of the syringe needle cylinder can be directly inserted into the tail end of the tracheal cannula, and the air tightness of the connection is ensured. Further, the connecting tube 1 is 1-10 mL of a syringe needle cylinder, preferably 1mL of a syringe needle cylinder. The specification of the selected syringe needle cylinder is not too large, otherwise, the syringe needle cylinder is not easy to be communicated with the tail end of the tracheal cannula in a sealing way with the U-shaped hose.

The method for judging whether the tracheal intubation of the rat is successful by using the indicator provided by the embodiment comprises the following steps:

1. performing tracheal intubation when the rat or the mouse is anesthetized and has obvious effect;

2. after the trachea cannula is completed, the front end of the syringe needle cylinder is connected with the tail end of the trachea cannula;

3. observing the fluctuation condition of the colored liquid level at the U-shaped bottom of the infusion hose 2;

4. if the fluctuation amplitude of the liquid level is large and the fluctuation frequency is consistent with the breathing frequency of the rat/mouse, the successful insertion of the trachea is indicated;

5. if the fluctuation amplitude of the liquid level is tiny, the erroneous insertion into the esophagus is indicated;

6. after judging, the indicator can be taken down, and the next respiratory tract administration operation is continued;

7. after the whole experiment operation is finished, one end of the transfusion hose 2 of the indicator can be clamped by a clamp, so that the backflow of liquid is avoided, and the next time of continuous use is reserved.

In another embodiment of the present application, as shown in fig. 1, the connection tube 1 is a 1mL syringe barrel, and the infusion hose 2 and the connection tube 1 are hermetically connected together by the infusion set stopper puncture outfit 4. The 1mL syringe needle cylinder and the infusion hose 2 can be communicated together in a sealing way only by using the infusion set bottle stopper puncture outfit 4, but the syringe needle cylinders with other specifications cannot be communicated in a sealing way only by using the infusion set bottle stopper puncture outfit 4, and can be communicated in a sealing way by adopting other pipeline connection modes.

In another embodiment of the present application, the transparent hose is bent and fixed in a U-shape in such a way that: the transparent hose is bent into a U shape, and the transparent hose in the U shape is bound by the adhesive tape or the rope, so that the transparent hose is kept in the U shape, and the adhesive tape is preferably recommended to be used, so that the fixing effect is better compared with the rope. Further, the adhesive tape can be medical adhesive tape or transparent adhesive tape.

In the above embodiment of the present application, the height of the U-shaped tube is generally controlled to be preferably 8-11 cm, and further, the length of the infusion hose 2 is preferably controlled to be 25-30 cm.

In the above embodiments of the present application, the colored liquid may be trypan blue solution or colored ink, but is not limited thereto. Further, the volume of the colored liquid contained in the U-shaped tube is about 150. Mu.L to 200. Mu.L based on the height of the U-shaped tube and the length of the infusion hose 2.

To sum up, the embodiment of the application provides an indicator for the trachea cannula of rats and mice, and the indicator provided by the embodiment of the application provides an intuitive basis for whether the trachea cannula is successful or not, and the discrimination accuracy can reach 100%, so that the accuracy of airway administration can be improved, and the possibility of misplug is reduced. Meanwhile, the indicator provided by the embodiment of the application is very convenient to use and can be operated by one hand, and the indicator provided by the embodiment of the application is low in manufacturing cost and can be recycled.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A rat tracheal cannula indicator, the indicator comprising: the device comprises a connecting pipe and a transparent U-shaped pipe, wherein one end of the connecting pipe is communicated with one end of the U-shaped pipe in a sealing way, and the other end of the connecting pipe can be communicated with the tail end of an endotracheal tube in a sealing way; the U-shaped pipe is formed by bending and fixing an infusion hose with an infusion drip cup into a U shape, and the infusion drip cup is positioned at one side of the U-shaped pipe connected with the connecting pipe; the U-shaped pipe is filled with colored liquid.

2. The rat tracheal cannula indicator of claim 1, wherein: the connecting pipe is a syringe needle cylinder, the syringe needle cylinder comprises a front end used for connecting a needle head and a rear end used for inserting a piston, the front end can be inserted into the tail end of the trachea cannula and is communicated with the tail end of the trachea cannula in a sealing way, and the rear end is communicated with one end of the U-shaped pipe in a sealing way through a hose.

3. The rat tracheal cannula indicator of claim 1, wherein: the connecting pipe is 1-10 mL of the injector needle cylinder.

4. A rat tracheal cannula indicator according to claim 3, wherein: the connecting pipe is a 1mL syringe needle cylinder, and the infusion hose and the connecting pipe are communicated together in a sealing way through an infusion set bottle stopper puncture outfit.

5. The rat tracheal cannula indicator of claim 1, wherein: the height of the U-shaped pipe is 8-11 cm.

6. The rat tracheal cannula indicator of claim 5, wherein: the length of the transfusion hose is 25-30 cm.

7. The rat tracheal cannula indicator of claim 6, wherein: the U-shaped tube is filled with a colored liquid with a volume of 150 mu L to 200 mu L.

8. The rat tracheal cannula indicator of claim 1, wherein: the mode of bending and fixing the infusion hose into a U shape comprises the following steps: the infusion hose is bent into a U shape, and the U-shaped infusion hose is bound by an adhesive tape or a rope, so that the U-shaped infusion hose is kept in a U-shaped state.

9. The rat tracheal cannula indicator of claim 8, wherein: the adhesive tape is medical adhesive tape or transparent adhesive tape.