Mouse gas anaesthetic mask

Abstract

The utility model provides a mouse gas anaesthetic mask which comprises an anaesthetic mask body, a mask clamping piece and an elastic pressing piece, the anaesthetic mask body is movably arranged in a clamping opening of the mask clamping piece, and a covering opening of the anaesthetic mask body right faces the clamping end of the mask clamping piece. A guide pipe connected with an external anesthetic gas conveying pipe is arranged on the back of the anaesthetic mask, the guide pipe movably penetrates through the mask clamping piece and can drive the anaesthetic mask to freely stretch out and draw back towards the clamping end of the mask clamping piece, one end of the elastic pressing piece is connected with the mask clamping piece, and the other end of the elastic pressing piece is connected with one end of the guide pipe. The guide pipe is pulled or pushed to move towards the clamping end of the mask clamping piece, so that the anaesthetic mask gets close to the clamping end of the neck clamping plate, the anaesthetic mask can be tightly buckled on the mouth and nose of a mouse, the device is convenient and rapid to operate, the anaesthetic implementation efficiency is improved, the anaesthetic mask is not prone to falling off in the anaesthetic implementation process, and the anaesthetic mask is convenient to use. The experiment operation can be smoothly carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of mouse anesthesia, in particular to a mouse gas anesthesia mask. Background Art

[0002] Mice, also known as laboratory mice, are a commonly used experimental animal in medical research. They are widely used in experiments in pharmacology, pathology, pathophysiology and other disciplines. Anesthesia is an indispensable part of the experiment. Its main purpose is to keep mice calm during surgical experiments and reduce their pain.

[0003] At present, inhalation anesthesia is commonly used for mouse anesthesia, that is, by buckling the anesthesia mask on the mouth and nose of the mouse, the mixed oxygen and anesthetic gas (sevoflurane) is supplied to the mouse for inhalation through the anesthesia mask for anesthesia. In order to prevent the anesthesia mask from falling off the mouth and nose of the mouse, in the prior art, a fixing rope or a fixing plate is generally used to pull on the teeth of the mouse, and the anesthesia mask is fixed by the teeth of the mouse. For example, patent application number 201910594916.7 discloses a gas anesthesia mask for large and small mice, which is formed by placing an anesthesia gas nozzle sliding sleeve inside the bracket sleeve, and the front end of the anesthesia gas nozzle is enclosed to form a mouse tooth fixing plate, and the upper incisors of the mouse are fixed by setting a mouse upper incisor insertion hole on the mouse tooth fixing plate, and the front end of the mouse mouth and nose with the upper incisors fixed is pulled into the anesthesia chamber formed by the bracket sleeve and the latex film, and the mouse is gas anesthetized by delivering anesthetic gas to the anesthesia chamber through the anesthesia machine. However, when fixing this anesthesia mask, the mouse's mouth must be pried open first to expose the mouse's upper incisors, which is very inconvenient. In addition, mice are small and prone to being active. During the fixation process, the mouse tooth fixing plate can easily fall off the mouse's upper incisors. Utility Model Content

[0004] In view of this, it is necessary to provide a convenient and fixed mouse gas anesthesia mask to solve the technical problems existing in the above-mentioned technology.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A gas anesthesia mask for mice, comprising an anesthesia mask for covering the mouth and nose of a mouse, a mask clamping piece for clamping on both sides of the mouse neck, and an elastic pressing piece. The anesthesia mask is movably arranged in a clamping opening of the mask clamping piece, and the covering opening of the anesthesia mask is directly opposite to the clamping end of the mask clamping piece. The back of the anesthesia mask is provided with a catheter connected to an external anesthesia gas delivery tube. The catheter is movably inserted into the mask clamping piece and can drive the anesthesia mask to freely extend and retract toward the clamping end of the mask clamping piece. One end of the elastic pressing piece is connected to the mask clamping piece, and the other end is connected to one end of the catheter to pull or push the catheter to move toward the clamping end of the mask clamping piece, so that the anesthesia mask approaches the clamping end of the neck clamping plate.

[0007] Preferably, the mask clamp includes a base and two neck clamping plates which are relatively pin-connected and arranged on both sides of the base and can clamp relative to each other, the anesthesia mask is arranged in a clamping opening formed between the two neck clamping plates, and the mask opening of the anesthesia mask is opposite to the clamping ends of the two neck clamping plates, the catheter arranged on the back of the anesthesia mask is movably passed through the base, and can freely extend and retract along the base toward the clamping end of the neck clamping plate, one end of the elastic pressing piece is connected to the base, and the other end thereof is connected to one end of the catheter to pull or push the catheter to move toward the clamping end of the neck clamping plate, so that the anesthesia mask approaches the clamping end of the neck clamping plate.

[0008] Preferably, the elastic pressing member is a compression spring, which is sleeved on the catheter and located between the anesthesia mask and the base. One end of the compression spring is against the base, and the other end is against the anesthesia mask, and the deformation force is used to push the anesthesia mask toward the clamping end of the neck clamping plate.

[0009] Preferably, the elastic pressing piece is a tension spring or a rubber band, one end of which is connected to the base, and the other end is connected to the end of the catheter away from the anesthesia mask. The deformation force is used to pull the catheter toward the clamping end of the neck clamping plate, so that the anesthesia mask moves closer to the clamping end of the neck clamping plate in the clamping opening.

[0010] Preferably, a stop ring is provided at one end of the catheter away from the anesthesia mask, the diameter of the stop ring is larger than the diameter of the catheter, and the stop ring is used to limit the position of the catheter.

[0011] Preferably, the clamping ends of the two neck clamping plates are bent toward each other to form an arc-shaped structure, and the clamping ends of the two neck clamping plates are symmetrically provided with notches.

[0012] Preferably, the notches at the clamping ends of the two neck clamping plates are respectively provided with flexible pads.

[0013] Preferably, torsion springs are respectively provided at the hinges between the two neck clamping plates and the base, and the deformation force of the torsion springs is utilized to enable the two neck clamping plates to rotate in opposite directions along the base, so that the clamping ends of the two neck clamping plates are brought closer to each other so that they can be clamped on both sides of the mouse neck.

[0014] Preferably, the other end of the two neck clamping plates away from their clamping ends is a pressing portion, and the pressing portion is located on the side of the base away from the anesthesia mask. An anti-slip protrusion is provided on the outer surface of the pressing portion, and the clamping ends of the two neck clamping plates can be separated from each other by pressing the pressing portions of the two neck clamping plates towards each other.

[0015] Preferably, the anesthesia mask is provided with a sealing gasket in an annular shape on the mask opening.

[0016] It can be seen from the above technical scheme that the mouse gas anesthesia mask provided by the present application includes an anesthesia mask, a mask clamp and an elastic pressing piece. The anesthesia mask is movably arranged in the clamping port of the mask clamp, and the mask opening of the anesthesia mask is directly facing the clamping end of the mask clamp. A catheter connected to an external anesthetic gas delivery tube is arranged on the back of the anesthesia mask. The catheter is movably passed through the mask clamp and can drive the anesthesia mask to freely extend and retract toward the clamping end of the mask clamp. One end of the elastic pressing piece is connected to the mask clamp, and the other end thereof is connected to one end of the catheter to pull or push the catheter to move toward the clamping end of the mask clamp, so that the anesthesia mask approaches the clamping end of the neck clamp. When anesthetizing mice, the anesthesia mask can be buckled on the mouth and nose of the mouse, and clamped on both sides of the mouse's neck by the mask clamps, and the elastic pressing piece is used to press the anesthesia mask toward the clamping end of the mask clamp, so that the anesthesia mask can be tightly buckled on the mouth and nose of the mouse. The device uses the neck of the mouse to fix the anesthesia mask, which is convenient and quick to operate, improves the efficiency of anesthesia, and during the anesthesia process, the anesthesia mask is not easy to fall off, which is conducive to the smooth implementation of experimental surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 4 It is a schematic structural diagram of a preferred embodiment of the utility model.

[0021] Figure 5 It is a schematic diagram of the use status of the utility model.

[0022] In the figure: anesthesia mask 1, mask clamp 2, elastic pressing piece 3, anesthesia gas delivery tube 4, catheter 5, base 21, neck clamp plate 22, torsion spring 23, flexible pad 24, anti-slip protrusion 25, pin 26, stop ring 6, sealing gasket 7. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 The embodiment of the utility model provides a mouse gas anesthesia mask, which can be mounted on the mouth and nose of mice used for experiments, and is used to perform gas anesthesia on mice. The mouse gas anesthesia mask comprises an anesthesia mask 1 for mounting on the mouth and nose of mice, a mask clamp 2 for clamping on both sides of the neck of mice, and an elastic pressing member 3. The anesthesia mask 1 is movably disposed in the clamping opening of the mask clamp 2, and the mask opening of the anesthesia mask 1 is directly opposite to the clamping end of the mask clamp 2. The anesthesia mask 1 is in the shape of a trumpet with one end open, and the open end is the mask opening, which can be mounted on the mouth and nose of mice. A catheter 5 is disposed on the back of the anesthesia mask 1, and the catheter 5 is movably passed through the mask clamp 2, and one end of the catheter 5 is connected to the anesthesia mask 1 is connected to the inner cavity, one end of the catheter 5 passes through the mask clamp 2 and is connected to the external anesthesia gas delivery pipe 4, the catheter 5 can freely extend and retract along the mask clamp 2 toward the clamping end of the mask clamp 2 to drive the anesthesia mask 1 to approach or move away from the clamping end of the mask clamp 2, one end of the elastic pressing member 3 is connected to the mask clamp 2, and one end of the elastic pressing member 3 is connected to one end of the catheter 5 to pull or push the catheter 5 to move toward the clamping end of the mask clamp 2, so that the anesthesia mask 1 approaches the clamping end of the neck clamping plate 22 in the clamping opening. When the mouse gas anesthesia mask is used, the mask clamp 2 is placed in front of the mouse and its clamping mouth is opened so that the mask opening of the anesthesia mask 1 in the clamping mouth is directly opposite to the mouth and nose of the mouse, and the mask clamp 2 is pushed toward the mouth and nose of the mouse so that the mask opening of the anesthesia mask 1 is placed on the mouth and nose of the mouse, and the mask clamp 2 is clamped on both sides of the mouse's neck. When pushed, the mask clamp 2 squeezes the elastic pressing piece 3 to cause deformation. Under the reverse force of the elastic pressing piece 3, the anesthesia mask 1 is always pressed on the mouth and nose of the mouse. The externally arranged anesthetic gas conveyor delivers gas to the anesthesia mask 1 through the anesthetic gas conveying pipe 4 and the catheter 5, so as to implement gas anesthesia on the mouse.

[0025] Specifically, the mask clamping member 2 includes a base 21 and two neck clamping plates 22. The two neck clamping plates 22 are rotatably pinned to the two sides of the base 21 through a pin shaft 26 and are arranged opposite to each other. Torsion springs 23 are respectively arranged at the pinning points between the base 21 and the two neck clamping plates 22. The deformation force of the torsion springs 23 is used to enable the two neck clamping plates 22 to rotate in opposite directions along the base 21, so that the clamping ends of the two neck clamping plates 22 are brought close to each other to form a clamping force. The anesthesia mask 1 is arranged on the two necks. The anesthesia mask 1 is arranged in a clamping opening formed between the two neck clamping plates 22, and the mask opening of the anesthesia mask 1 faces the clamping ends of the two neck clamping plates 22. A through hole is provided on the base 21 for the catheter 5 arranged on the back of the anesthesia mask 1 to pass through. The opening direction of the through hole faces the clamping opening formed between the two neck clamping plates 22. The catheter 5 is movably penetrated through the through hole and can freely extend and retract along the through hole toward the clamping end of the neck clamping plate 22 to drive the anesthesia mask 1 to move toward the clamping end of the neck clamping plate 22. The elastic pressing member 3 is a pressure member. The compression spring is sleeved on the conduit 5 and is located between the anesthesia mask 1 and the base 21. One end of the compression spring abuts against the base 21, and the other end abuts against the anesthesia mask 1 or the end of the conduit 5 connected to the anesthesia mask 1. The deformation force of the compression spring is used to push the anesthesia mask 1 toward the clamping end of the neck clamping plate 22. When the mouse gas anesthesia mask is used, the mask clamp 2 is placed in front of the mouse, and the two neck clamping plates 22 are manually separated to both sides to open the clamping port so that the mouse inside the clamping port is clamped. The anesthesia mask 1 is facing the mouth and nose of the mouse, and the cover of the anesthesia mask 1 is placed on the mouth and nose of the mouse, and is continuously pressed against the mouth and nose of the mouse to cause the anesthesia mask 1 to retract backwards, squeezing the compression spring to shrink and deform. When the two neck clamping plates 22 are located on both sides of the mouse's neck, the two neck clamping plates 22 are released so that the two neck clamping plates 22 are relatively clamped on both sides of the mouse's neck under the action of the torsion spring 23. At this time, the anesthesia mask 1 is always pressed against the mouth and nose of the mouse under the reverse force of the compression spring.

[0026] Please see Figure 2 and Figure 3 In order to prevent the catheter 5 from being separated from the base 21 when it is extended, a stop ring 6 is provided on the outer wall of the end of the catheter 5 away from the anesthesia mask 1. The diameter of the stop ring 6 is larger than the diameter of the through hole on the base 21, and the catheter 5 is limited by the stop ring 6.

[0027] Please continue to see Figure 2 and Figure 3Furthermore, the clamping ends of the two neck clamping plates 22 are bent toward each other to form an arc-shaped structure. The other end of the two neck clamping plates 22 away from the clamping end is extended toward the rear of the base 21 to form a pressing portion. When clamping and fixing, the pressing portions of the neck clamping plates 22 can be pressed toward each other by the fingers at the same time, so that the clamping ends of the two neck clamping plates 22 can be separated from each other and the clamping mouth can be opened. In addition, anti-slip protrusions 25 are provided on the outer surfaces of the pressing portions of the two neck clamping plates 22 to facilitate the pressing operation by the operator's fingers.

[0028] In order to facilitate the clamping and fixing of the mouse neck, by symmetrically opening notches at the clamping ends of the two neck clamping plates 22, when the mouse neck is clamped, the notches at the clamping ends of the two neck clamping plates 22 form a hug on both sides of the mouse neck, which can prevent the neck clamping plate 22 from being separated from the mouse neck, and in order to prevent the notches from pressing the mouse neck too tightly, causing the mouse to suffocate or poor blood circulation, flexible pads 24 are respectively sleeved on the notches at the clamping ends of the two neck clamping plates 22. The flexible pads 24 are made of sponge or silicone, and the flexible pads 24 are used to cushion and protect the mouse neck. It should be noted that when the anesthesia mask 1 is fixed, the two neck clamping plates 22 should be clamped on the left and right sides of the mouse neck, and avoid clamping on the lower sides of the mouse neck, which will cause compression to the mouse's trachea and easily cause the mouse to suffocate.

[0029] Please continue to see Figure 2 and Figure 3 Furthermore, in order to make the mask opening of the anesthesia mask 1 fit closely with the mouth and nose of the mouse and prevent leakage of anesthetic gas, a sealing gasket 7 is arranged in a ring shape at the mask opening of the anesthesia mask 1. The sealing gasket 7 is made of thin silicone and can be adaptively deformed according to the contour of the mouse's mouth, thereby improving the sealing performance of the mask opening of the anesthesia mask 1.

[0030] Please see Figure 4 In another preferred embodiment, the elastic pressing member 3 may also use a tension spring or a rubber band to make the anesthesia mask 1 approach the clamping end of the neck clamping plate 22 in the clamping opening. Specifically, when a tension spring is used, one end of the tension spring may be fixedly connected to the base 21, and the other end thereof may be connected to the end of the catheter 5 away from the anesthesia mask 1. The tension spring is used to pull the catheter 5 toward the clamping end of the neck clamping plate 22, so that the anesthesia mask 1 approaches the clamping end of the neck clamping plate 22 in the clamping opening. When a rubber band is used, its setting method and working principle are consistent with those of a tension spring, and both can achieve the goal of making the anesthesia mask 1 approach the clamping end of the neck clamping plate 22 in the clamping opening, so that it is pressed on the mouth and nose of the mouse.

[0031] When anesthetizing mice, the mouse gas anesthesia mask is clamped on both sides of the mouse's neck by two neck clamping plates 22, and the elastic pressing piece 3 is used to press the anesthesia mask 1 toward the clamping end of the neck clamping plate 22, so that the anesthesia mask 1 is tightly buckled on the mouth and nose of the mouse. The anesthesia mask 1 is fixed by the neck of the mouse, which is convenient and quick to operate, improves the efficiency of anesthesia, and during the anesthesia process, the anesthesia mask is not easy to fall off, which is conducive to the smooth implementation of experimental surgery.

[0032] The mouse gas anesthesia mask can not only be used to anesthetize mice, but is also suitable for anesthetizing rats, and the implementation method is the same as that for mice.

[0033] The above disclosure is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A gas anesthesia mask for mice, characterized in that: The invention comprises an anesthesia mask for covering the mouth and nose of a mouse, a mask clamping piece and an elastic pressing piece for clamping on both sides of the mouse neck. The anesthesia mask is movably arranged in a clamping opening of the mask clamping piece, and the covering opening of the anesthesia mask is directly opposite to the clamping end of the mask clamping piece. A catheter connected to an external anesthetic gas delivery tube is arranged on the back of the anesthesia mask. The catheter is movably passed through the mask clamping piece and can drive the anesthesia mask to freely extend and retract toward the clamping end of the mask clamping piece. One end of the elastic pressing piece is connected to the mask clamping piece, and the other end thereof is connected to one end of the catheter to pull or push the catheter to move toward the clamping end of the mask clamping piece, so that the anesthesia mask approaches the clamping end of the neck clamping plate.

2. The mouse gas anesthesia mask as claimed in claim 1, characterized in that: The mask clamping member includes a base and two neck clamping plates which are relatively pin-connected and arranged on both sides of the base and can clamp relative to each other. The anesthesia mask is arranged in a clamping opening formed between the two neck clamping plates, and the mask opening of the anesthesia mask is opposite to the clamping ends of the two neck clamping plates. The catheter arranged on the back of the anesthesia mask is movably passed through the base and can freely extend and retract along the base toward the clamping end of the neck clamping plate. One end of the elastic pressing member is connected to the base, and the other end thereof is connected to one end of the catheter to pull or push the catheter to move toward the clamping end of the neck clamping plate, so that the anesthesia mask approaches the clamping end of the neck clamping plate.

3. The mouse gas anesthesia mask as claimed in claim 2, characterized in that: The elastic pressing piece is a compression spring, which is sleeved on the catheter and located between the anesthesia mask and the base. One end of the compression spring is against the base, and the other end is against the anesthesia mask. The deformation force is used to push the anesthesia mask toward the clamping end of the neck clamping plate.

4. The mouse gas anesthesia mask as claimed in claim 3, characterized in that: The elastic pressing piece is a tension spring or a rubber band, one end of which is connected to the base, and the other end is connected to the end of the catheter away from the anesthesia mask. The deformation force is used to pull the catheter toward the clamping end of the neck clamping plate, so that the anesthesia mask moves closer to the clamping end of the neck clamping plate in the clamping opening.

5. The mouse gas anesthesia mask as claimed in claim 4, characterized in that: A stop ring is arranged at one end of the catheter away from the anesthesia mask, the diameter of the stop ring is larger than the diameter of the catheter, and the stop ring is used to limit the position of the catheter.

6. The mouse gas anesthesia mask as claimed in claim 5, characterized in that: The clamping ends of the two neck clamping plates are bent toward each other to form an arc-shaped structure, and the clamping ends of the two neck clamping plates are symmetrically provided with notches.

7. The mouse gas anesthesia mask as claimed in claim 6, characterized in that: The notches at the clamping ends of the two neck clamping plates are respectively sleeved with flexible pads.

8. The mouse gas anesthesia mask as claimed in claim 7, characterized in that: Torsion springs are respectively arranged at the hinges between the two neck clamping plates and the base. The deformation force of the torsion springs is utilized to enable the two neck clamping plates to rotate in opposite directions along the base, so that the clamping ends of the two neck clamping plates are brought closer to each other so that they can be clamped on both sides of the mouse neck.

9. The mouse gas anesthesia mask as claimed in claim 8, characterized in that: The other end of the two neck clamping plates away from their clamping ends is a pressing portion, which is located on the side of the base away from the anesthesia mask. An anti-slip protrusion is provided on the outer surface of the pressing portion. By pressing the pressing portions of the two neck clamping plates in opposite directions, the clamping ends of the two neck clamping plates can be separated from each other.

10. The mouse gas anesthesia mask according to claim 1 or 9, characterized in that: The mask opening of the anesthesia mask is annularly provided with a sealing gasket.

Images