Limiting structure of medical gas terminal

Abstract

The utility model relates to the technical field of medical gas terminals, and provides a limiting structure of a medical gas terminal, the limiting structure comprises a limiting ring, the limiting ring is fixedly connected with a fixed part of a base assembly, the limiting ring is provided with a centering limiting groove and a deflection limiting groove, and the arc radius of the centering limiting groove is the same as the outer diameter of a valve seat of a terminal body; the centering limiting groove and the offset limiting groove are connected through a transition part, the width of the transition part is smaller than the diameter of the outer wall of the valve seat, and the transition part can generate elastic deformation when being extruded. According to the utility model, the terminal main body is prevented from easily deflecting, and the arrangement of the centering limiting groove and the deflection limiting groove also limits the deflection direction of the terminal main body, thereby avoiding the change of the transition state of the terminal main body caused by random touch.

Description

Technical Field

[0001] The utility model relates to the technical field of medical gas terminals, and in particular to a limiting structure of a medical gas terminal. Background Art

[0002] Medical gas terminals are devices used in hospital operating rooms, emergency rooms, resuscitation rooms, wards and other places to provide medical oxygen, medical air, medical vacuum and other medical gases to medical staff and patients.

[0003] When the existing medical gas terminal is working normally, the interior is filled with gas with a certain pressure. It takes a lot of force to press the pressure cover, and it is difficult to pull out the plug-in connector, especially in an emergency situation, which may even affect the patient's life and health. For this reason, the applicant provides a medical gas terminal and a plug-in connector unplugging method in the patent document with application number "202410335394X". The medical gas terminal includes a base assembly and a terminal body. The gas path between the base assembly and the terminal body is connected or disconnected by rotating the terminal body. However, in this technology, the terminal body has no fixing measures in the two states, and it is easy to rotate due to accidental touch, causing abnormal connection and disconnection of the gas path. Utility Model Content

[0004] The purpose of the utility model is to provide a limiting structure of a medical gas terminal to solve the above-mentioned defects of the prior art.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A limiting structure for a medical gas terminal, the limiting structure comprising a limiting ring, the limiting ring being fixedly connected to a fixed part of a base assembly, the limiting ring being provided with a centering limiting groove and a deflection limiting groove, the arc radius of the centering limiting groove being the same as the outer diameter of a valve seat of a terminal body; the centering limiting groove and the offset limiting groove being connected via a transition portion, the width of the transition portion being smaller than the outer wall diameter of the valve seat, and the transition portion being elastically deformable when squeezed.

[0007] Optionally, the centering limit groove includes an arc, and the arc length is greater than 1 / 2 of the circumference of the outer wall of the valve seat.

[0008] Optionally, the centering limit groove includes two arc sections, and the two arc sections are located at both ends of any diameter of the outer wall of the valve seat.

[0009] Optionally, connecting seats are provided on two opposite sides of the limiting ring, and the connecting seats are fixedly connected to the fixed part of the base assembly.

[0010] Optionally, the limiting ring is formed by enclosing a belt body, and two ends of the belt body are connected by a fastener.

[0011] This practical technical solution has at least the following advantages and beneficial effects:

[0012] In the utility model, since the transition part can undergo elastic deformation when being squeezed, the terminal body can be manually pushed to extrude the transition part so that it enters the centering limit groove or the offset limit groove. Since the width of the transition part is smaller than the outer wall diameter of the valve seat, the terminal body is prevented from easily deflecting. Moreover, the setting of the centering limit groove and the deflection limit groove also limits the deflection direction of the terminal body, thereby preventing the rotation state of the terminal body from being changed due to random touching. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic structural diagram of a limiting structure of a medical gas terminal provided by the utility model;

[0015] Figure 2 A diagram showing the coaxial state of a gas terminal and a base assembly when a limiting structure of a medical gas terminal is used;

[0016] Figure 3 for Figure 2 AA section view;

[0017] Figure 4 A diagram showing a state in which a gas terminal is deflected relative to a base component when a limiting structure of a medical gas terminal is used;

[0018] Figure 5 for Figure 4 BB cross-sectional view;

[0019] Icon: 1-terminal body, 101-valve seat, 2-base assembly, 201-pressure ring, 300-limiting ring, 301-centering limit groove, 302-deflection limit groove, 303-connecting seat, 304-belt body. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] refer to Figure 1 A limiting structure of a medical gas terminal is applied to the medical gas terminal provided in the prior application cited in the background technology, and includes a base assembly 2 and a terminal body 1. The base assembly 2 and the terminal body 1 are connected by a ball joint structure, so that the gas path between the base assembly 2 and the terminal body 1 can be connected or disconnected by rotating the terminal body 1. In the terminal body 1, the valve core is assembled in the valve seat 101, and the valve core is designed as a ball hole type. In the base assembly 2, the ball seat is designed as a sphere. The ball of the ball seat cooperates with the ball hole of the valve core. The valve core is pressed on the ball seat by a pressure ring 201. The valve core is provided with an air outlet hole, and the ball seat is provided with a second air vent hole. When the terminal body 1 is coaxial with the base assembly 2, the air outlet hole and the second air vent hole are aligned, and the gas path is connected. When the terminal body 1 is deflected by a certain angle, the air outlet hole and the second air vent hole are staggered, and the gas path is disconnected.

[0023] On the basis of the above, the limiting structure provided in this embodiment includes a limiting ring 300, which is fixedly connected to the fixed part of the base assembly 2. Specifically, two opposite sides of the limiting ring 300 are provided with connecting seats 303, and the connecting seats 303 and the limiting ring 300 can be welded and fixed. Further, the limiting ring 300 is surrounded by a belt body 304, and the two ends of the belt body 304 are connected by fasteners (such as screws, pins) for easy disassembly and assembly. The connecting seat 303 is fixedly connected to the pressure ring 201 of the base assembly 2. In this embodiment, as an option, the connecting seat 303 and the pressure ring 201 are connected by screws to facilitate disassembly and maintenance.

[0024] The limiting ring 300 is provided with a centering limiting groove 301 and a deflection limiting groove 302. The arc radius of the centering limiting groove 301 is the same as the outer diameter of the valve seat 101 of the terminal body 1; the centering limiting groove 301 and the offset limiting groove are connected through a transition portion, the width of the transition portion (i.e., d in the figure) is smaller than the outer wall diameter of the valve seat 101, and the transition portion can be elastically deformed when squeezed. In practical applications, the limiting ring 300 can use spring steel to support the paddle, so as to ensure that the transition portion can be elastically deformed when squeezed. Of course, in other embodiments, the material of the limiting ring 300 can also be made of other materials, such as polymer materials.

[0025] It is worth noting that, since the transition portion can undergo elastic deformation when being squeezed, the transition portion can be squeezed by manually pushing the terminal body 1 so that it enters the centering limit groove 301 or the offset limit groove. Since the width of the transition portion is smaller than the outer wall diameter of the valve seat 101, the terminal body 1 is prevented from easily deflecting (that is, after the terminal body 1 is pushed from one groove to another, it cannot automatically return to its position without the action of external force). In addition, the setting of the centering limit groove 301 and the deflection limit groove 302 also limits the deflection direction of the terminal body 1, thereby preventing the rotation state of the terminal body 1 from changing due to random touching.

[0026] In addition, since the arc radius of the centering limit groove 301 is the same as the outer diameter of the valve seat 101 of the terminal body 1, the centering limit groove 301 can automatically align the terminal body 1 with the base assembly 2, ensuring that when the terminal body 1 is inserted into the centering limit groove 301, the air outlet and the second air vent can be aligned to keep the air path connected.

[0027] The centering limit groove 301 includes two arcs, and the two arcs are located at the two ends of any diameter of the outer wall of the valve seat 101. Specifically, in this embodiment, refer to Figure 2 The two ends of the belt body 304 are on the left side of the figure, and the centering limit grooves 301 are set close to the two ends of the belt body 304, with one centering limit groove 301 on the upper and lower sides. Then the two arcs are located at the two ends of the vertical diameter. It should be understood that the right ends of the arcs at both ends should be located on the right side of the vertical diameter to ensure that the centering limit grooves 301 limit the position and play a centering role at the same time.

[0028] In other embodiments, the centering limit groove 301 may also only include a section of circular arc. In this case, the deflection limit groove 302 is arranged at both ends close to the belt body 304, that is, in the above method, the positions of the centering limit groove 301 and the deflection limit groove 302 are exchanged. It should be understood that in this method, the arc length is greater than 1 / 2 of the circumference of the outer wall of the valve seat 101 to ensure that the limit can be played at the same time. Centering effect.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A limiting structure for a medical gas terminal, characterized in that: The limiting structure comprises a limiting ring (300), wherein the limiting ring (300) is fixedly connected to a fixed part of a base assembly (2), and the limiting ring (300) is provided with a centering limiting groove (301) and a deflection limiting groove (302), wherein the arc radius of the centering limiting groove (301) is the same as the outer diameter of a valve seat (101) of a terminal body (1); the centering limiting groove (301) and the deflection limiting groove are connected via a transition portion, wherein the width of the transition portion is smaller than the outer wall diameter of the valve seat (101), and the transition portion can be elastically deformed when squeezed.

2. The limiting structure of the medical gas terminal according to claim 1, characterized in that: The centering limit groove (301) comprises a circular arc, and the length of the circular arc is greater than 1 / 2 of the circumference of the outer wall of the valve seat (101).

3. The limiting structure of the medical gas terminal according to claim 1, characterized in that: The centering limit groove (301) comprises two circular arcs, and the two circular arcs are located at two ends of any diameter of the outer wall of the valve seat (101).

4. The limiting structure of the medical gas terminal according to any one of claims 1 to 3, characterized in that: Two opposite sides of the limiting ring (300) are provided with connecting seats (303), and the connecting seats (303) are fixedly connected to the fixing part of the base assembly (2).

5. The limiting structure of the medical gas terminal according to any one of claims 1 to 3, characterized in that: The limiting ring (300) is enclosed by a belt body (304), and the two ends of the belt body (304) are connected by a fastener.

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