Medical gas terminal and plug-in connector extraction method

Abstract

This invention relates to the field of medical gas terminal technology, and provides a medical gas terminal and a method for removing the plug-in connector. The medical gas terminal includes a base assembly and a terminal body. The terminal body includes a pressure cap, which is configured to unlock the plug-in connector by pressing. The base assembly and the terminal body are connected by a ball joint structure, so that the gas path between the base assembly and the terminal body can be connected or disconnected by rotating the terminal body. When the plug-in connector needs to be removed, rotating the terminal body disconnects the gas path between the base assembly and the terminal body, thereby eliminating gas pressure inside the terminal body. Pressing the pressure cap then becomes very easy, and the process of removing the plug-in connector is time-saving and labor-saving.

Description

Technical Field

[0001] This invention relates to the field of medical gas terminal technology, and more specifically, to a medical gas terminal and a method for removing the plug-in connector. Background Technology

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

[0003] Existing medical gas terminals (such as those with publication number "CN213077021U") are typically used in conjunction with plug-in connectors. During use, the plug-in connector is inserted into the interface on the medical gas terminal, squeezing a locking pin on the valve seat. After the guide end of the plug-in connector passes the locking pin, the pin automatically returns to its original position under the action of a spring, locking the plug-in connector. To remove the plug-in connector, one hand holds the connector, and the other hand presses down on the pressure cap of the medical gas terminal to retract the locking pin, allowing the connector to be removed. However, when the medical gas terminal is working normally, it is filled with pressurized gas, requiring considerable force to press down the pressure cap, making it difficult to remove the plug-in connector. This is especially problematic in emergencies and could even endanger the patient's life and health. Therefore, providing a medical gas terminal with an easily removable plug-in connector is a pressing problem in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a medical gas terminal and a method for removing the plug-in connector, so as to solve the above-mentioned defects of the prior art.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] A medical gas terminal includes a base assembly and a terminal body. The terminal body includes a pressure cap configured to unlock a plug-in connector by pressing. The base assembly and the terminal body are connected by a ball joint structure so that the gas passage between the base assembly and the terminal body can be connected or disconnected by rotating the terminal body.

[0007] Optionally, the terminal body has a valve core that can move toward the base under the action of the plug-in connector;

[0008] The base assembly includes a base, a ball seat, a sealing seat, a sealing element, and a first elastic element. The base has an installation hole and an air intake channel communicating with the installation hole. The sealing seat is located between the installation hole and the air intake channel. The sealing seat has a first vent hole. The sealing element is located on the side of the sealing seat near the air intake channel, and the sealing element closes the first vent hole under the action of the first elastic element.

[0009] The ball seat and valve core are connected by a ball hinge. The ball seat is slidably sealed to the mounting hole. The ball seat is connected to a pressing element for squeezing the seal to open the first vent. The valve core is provided with an air outlet. The ball seat is provided with a second vent. Rotating the terminal body can make the second vent and the air outlet staggered or connected.

[0010] Optionally, the ball seat includes a ball and a guide cylinder, the guide cylinder being slidably and sealingly connected to the mounting hole, and the extrusion member being connected to the guide cylinder; the valve core is provided with a ball hole, and the ball fits into the ball hole; the base is connected to a pressure ring for pressing the valve core by fasteners, and the terminal body is connected to a connector, the connector passing through the pressure ring and being slidably connected to the valve core.

[0011] Optionally, the connecting member includes a connecting rod and a limiting block. One end of the connecting rod is threaded to the terminal body, and the other end of the connecting rod passes through the valve core and is connected to the limiting block. A third elastic element is press-fitted between the limiting block and the valve core, and the elastic element is sleeved on the connecting rod.

[0012] Optionally, the limiting block and the connecting rod are connected by threads.

[0013] Optionally, the guide cylinder and the extrusion member are connected by a second elastic member.

[0014] Optionally, the ball seat has a first sealing ring groove at the end of the second vent near the valve core, and a first sealing ring is provided in the first sealing ring groove.

[0015] Optionally, the sealing seat has a second sealing ring groove on the side near the sealing element, and a second sealing ring is provided in the second sealing ring groove.

[0016] Optionally, the sidewall of the mounting hole is provided with a third sealing ring groove, and a third sealing ring is provided in the third sealing ring groove.

[0017] The present invention also provides a method for removing a plug-in connector from a medical gas terminal, applicable to any of the medical gas terminals described above, comprising the following steps:

[0018] S1. Rotate the terminal body to disconnect the air passage of the terminal body from the air passage of the base, so that there is no air pressure inside the terminal body;

[0019] S2. Press the cover to remove the plug connector.

[0020] The technical solution of the present invention has at least the following advantages and beneficial effects: In the present invention, the base assembly and the terminal body are connected by a ball joint structure. When the medical gas terminal is working normally, the gas path between the base assembly and the terminal body is connected. When it is necessary to remove the plug-in connector, the terminal body is rotated to disconnect the gas path between the base assembly and the terminal body, so that there is no gas pressure inside the terminal body. The action of pressing the cover is very easy, and the process of pulling out the plug-in connector is time-saving and labor-saving. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A cross-sectional view of a medical gas terminal provided by the present invention;

[0023] Figure 2 This is a cross-sectional view of the valve core;

[0024] Figure 3 This is a cross-sectional view of the ball seat;

[0025] Figure 4 for Figure 1 Enlarged view of point A;

[0026] Figure 5 Schematic diagram of the plug-in connector inserted into the terminal body;

[0027] Figure 6 A schematic diagram showing the state in which the air outlet and the second air vent are misaligned when the terminal body is rotated.

[0028] Figure 7 for Figure 6 Schematic diagram showing the positional relationship between the valve core and the ball seat;

[0029] Icons: 1-Gland, 2-Valve core, 201-Air outlet, 3-Base, 301-Mounting hole, 302-Air inlet channel, 303-Maintenance seat, 4-Ball seat, 401-Ball, 402-Guide tube, 403-Second vent, 5-Sealing seat, 6-Sealing element, 7-First elastic element, 8-Pressure ring, 9-Connector, 901-Connecting rod, 902-Limiting block, 10-Second elastic element, 11-Third elastic element, 12-First sealing ring, 13-Second sealing ring, 14-Third sealing ring, 15-Fourth sealing ring, 16-Valve seat, 17-Extrusion element, 100-Terminal body, 200-Base assembly, 300-Plug-in connector. Detailed Implementation

[0030] Example 1

[0031] refer to Figure 1-3A medical gas terminal includes a base assembly 200 and a terminal body 100. The terminal body 100 includes a pressure cover 1, which is configured to unlock a plug-in connector 300 by pressing. That is, the present invention mainly addresses the type of medical gas terminal where the plug-in connector 300 is locked by a latch and unlocked by pressing the pressure cover 1 to retract the latch. Because there is a certain gas pressure inside the terminal body 100 when the plug-in connector 300 needs to be pulled out, pressing the pressure cover 1 requires a lot of force, which is time-consuming and laborious. The present invention aims to improve this.

[0032] The inventive concept of this invention is as follows: the base assembly 200 and the terminal body 100 are connected by a ball joint structure, so that the gas passage between the base assembly 200 and the terminal body 100 can be connected or disconnected by rotating the terminal body 100. When the medical gas terminal is working normally, the gas passage between the base assembly 200 and the terminal body 100 is connected. When it is necessary to remove the plug-in connector 300, rotating the terminal body 100 disconnects the gas passage between the base assembly 200 and the terminal body 100, thereby eliminating the gas pressure inside the terminal body 100. Pressing the cover 1 is very easy, and the process of pulling out the plug-in connector 300 is time-saving and labor-saving.

[0033] In this embodiment, the base assembly 200 includes a base 3, a ball seat 4, a sealing seat 5, a sealing element 6, and a first elastic element 7. The base 3 has an internal mounting hole 301 and an air inlet channel 302 communicating with the mounting hole 301. The sealing seat 5 is located between the mounting hole 301 and the air inlet channel 302, and has a first vent hole. The sealing element 6 is located on the side of the sealing seat 5 near the air inlet channel 302, and the sealing element 6 closes the first vent hole under the action of the first elastic element 7. It is worth noting that this arrangement facilitates sealing the air passage inside the base assembly 200 when the medical gas terminal is not in use, and also facilitates maintenance of the terminal body 100 without shutting off the gas source.

[0034] Specifically, in this embodiment, the sealing seat 5 has a second sealing ring groove on the side near the sealing member 6, and a second sealing ring 13 is provided in the second sealing ring groove. The sealing member 6 has a plate-like structure, and the first elastic member 7 is a spring. To facilitate limiting the position of the sealing member 6, a first guide rod can be connected to the plate-like sealing member 6. The first guide rod is inserted into the air intake channel 302. It should be understood that the diameter of the first guide rod should be smaller than the diameter of the air intake channel 302 to facilitate airflow. In other embodiments of the present invention, other forms can also be used to form a sealing pair between the sealing member 6 and the sealing seat 5. For example, as in the prior art, the sealing member 6 is spherical, and the second sealing ring 13 is disposed on the inner wall of the first vent hole. Under the action of the first elastic member 7, the spherical sealing member 6 abuts against the second sealing ring 13 to seal the first vent hole.

[0035] Based on the above, the terminal body 100 has a valve core 2 that can move toward the base 3 under the action of the plug-in connector 300. The ball seat 4 is connected to the valve core 2 by a ball joint. The ball seat 4 is slidably sealed to the mounting hole 301. The ball seat 4 is connected to a pressing member 17 for squeezing the sealing member 6 to open the first vent hole. In this way, when the plug-in connector 300 is inserted into the plug interface of the terminal body 100, it pushes the valve core 2 and the ball seat 4 to move, thereby pushing the pressing member 17 to move the sealing member 6 away from the sealing seat 5, thereby opening the first vent hole.

[0036] The valve core 2 is provided with an outlet 201, and the ball seat 4 is provided with a second vent 403. When the plug-in connector 300 is inserted into the medical gas terminal, the first vent is opened. If the outlet 201 and the second vent 403 are connected, the medical gas terminal can work normally (see reference). Figure 5 Furthermore, it should be understood that the distance by which the insertion head pushes the valve core 2 is very small, and the fourth sealing ring 15 between the valve core 2 and the terminal body 100 always provides a sealing function. (Reference) Figure 6 and Figure 7 By rotating the terminal body 100 to offset the vent 201 from the second vent 403, no air pressure is allowed inside the terminal body 100, making it easy to press the cover 1 and pull out the plug-in connector 300. Furthermore, the ball seat 4 has a first sealing ring groove at the end of the second vent 403 near the valve core 2, and a first sealing ring 12 is provided in the first sealing ring groove. The first sealing ring 12 abuts against the valve core 2 to ensure sealing performance.

[0037] In this embodiment, the ball seat 4 and valve core 2 have the following specific structures: the ball seat 4 includes a ball 401 and a guide tube 402. The guide tube 402 is slidably and sealingly connected to the mounting hole 301. Specifically, the side wall of the mounting hole 301 is provided with a third sealing ring groove, and a third sealing ring 14 is provided in the third sealing ring groove. It should be understood that in some embodiments, a rubber ring (similar to a syringe piston) can also be fitted on the guide tube 402 to achieve a sliding seal with the mounting hole 301.

[0038] It is worth noting that, due to wear between the mounting hole 301 and the guide tube 402, in actual use, the base 3 can be connected to a replaceable maintenance seat 303 via a threaded connection. The aforementioned mounting hole 301 and sealing seat 5 can both be set on the maintenance seat 303.

[0039] The valve core 2 is provided with a ball hole, and the ball 401 is engaged with the ball hole. It should be understood that the above is only one form of ball hinge connection between the valve core 2 and the ball seat 4. In other embodiments, the ball seat 4 can be designed as a hole structure and the valve core 2 can be designed as a ball structure, and the two can cooperate with each other to achieve ball hinge connection.

[0040] Based on the above, the extrusion member 17 is connected to the guide cylinder 402. In this embodiment, the guide cylinder 402 and the extrusion member 17 are connected by a second elastic member 10. The second elastic member 10 is a spring, which can provide a force to the ball seat 4 to press tightly against the valve core 2, improving the sealing performance of the contact surface. It should be understood that in other embodiments, the extrusion member 17 and the guide cylinder 402 can also be rigidly connected. When the first elastic member 7 makes the sealing member 6 press tightly against the sealing seat 5, the extrusion member 17 is also subjected to force, making the ball seat 4 press tightly against the valve core 2. In this embodiment, the extrusion member 17 includes a support plate and a second guide rod. The second elastic member 10 is press-fitted between the support plate and the bottom wall of the guide cylinder 402. The second guide rod passes through the first vent hole. It should be understood that the diameter of the second guide rod should be smaller than the diameter of the first vent hole to facilitate ventilation, or the diameter of the second guide rod should be equal to the diameter of the first vent hole. In this case, a through hole should be provided in the extrusion member 17 for ventilation.

[0041] In this embodiment, the base 3 is connected to a pressure ring 8 for pressing the valve core 2 by fasteners (not shown, such as screws or bolts). It is easy to understand that, based on this, the ball 401 can be designed to be a form in which the ball hole can be freely removed. By removing the pressure ring 8, the terminal body 100 can be separated from the base assembly 200, which facilitates the individual maintenance of the terminal body 100.

[0042] Based on the above, and referring to Figure 1 and Figure 4 The terminal body 100 is connected to a connector 9, which passes through the pressure ring 8 and is slidably connected to the valve core 2. Specifically, the connector 9 includes a connecting rod 901 and a limiting block 902. One end of the connecting rod 901 is threadedly connected to the terminal body 100 and, in practical applications, can be connected to the valve seat 16 in the terminal body 100. The other end of the connecting rod 901 passes through the valve core 2 and is connected to the limiting block 902. A third elastic element 11 is press-fitted between the limiting block 902 and the valve core 2, and the elastic element is sleeved on the connecting rod 901. The third elastic element 11 is a spring. It is worth noting that the third elastic element ensures that the valve seat 16 is always tightly pressed against the valve core 2, preventing the terminal body 100 from shifting away from the valve core 2. Furthermore, the limiting block 902 is threadedly connected to the connecting rod 901, which allows adjustment of the preload of the third elastic element 11, better ensuring that the valve seat 16 is tightly pressed against the valve core 2. In practical applications, connecting rod 901 can be directly made of double-ended screw, and limit block 902 can be directly made of nut.

[0043] In addition, it should be understood that the pressure ring 8 is provided with a clearance hole for the connecting rod 901, and the clearance hole should meet the requirement that it does not affect the connecting rod 901 from rotating with the terminal body 100.

[0044] Example 2

[0045] The present invention also provides a method for removing the plug-in connector 300 from a medical gas terminal, applicable to the medical gas terminal provided in Embodiment 1, comprising the following steps:

[0046] S1. Rotate the terminal body 100 to make the second vent 403 on the ball seat 4 misalign with the vent 201 on the valve core 2, thereby disconnecting the air passage of the terminal body 100 from the air passage of the base 3, so that there is no air pressure inside the terminal body 100.

[0047] S2. Press the cover 1 to remove the plug connector 300. Since step S1 leaves no air pressure inside the terminal body 100, pressing the cover 1 is very easy.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A medical gas terminal comprising a base assembly (200) and a terminal body (100), the terminal body (100) comprising a gland (1) configured to enable unlocking of a plug joint (300) by a pressing operation, characterized in that, The base assembly (200) and the terminal body (100) are connected by a ball joint structure so that the air passage between the base assembly (200) and the terminal body (100) can be connected or disconnected by rotating the terminal body (100); The terminal body (100) has a valve core (2) that can move toward the base (3) under the action of the plug-in connector (300); The base assembly (200) includes a base (3), a ball seat (4), a sealing seat (5), a sealing element (6), and a first elastic element (7). The base (3) has an installation hole (301) and an air intake channel (302) communicating with the installation hole (301). The sealing seat (5) is located between the installation hole (301) and the air intake channel (302). The sealing seat (5) has a first vent hole. The sealing element (6) is located on the side of the sealing seat (5) close to the air intake channel (302), and the sealing element (6) closes the first vent hole under the action of the first elastic element (7). The ball seat (4) is connected to the valve core (2) by a ball joint. The ball seat (4) is slidably sealed to the mounting hole (301). The ball seat (4) is connected to a pressing element (17) for pressing the sealing element (6) to open the first vent hole. The valve core (2) is provided with an air outlet (201). The ball seat (4) is provided with a second vent hole (403). Rotating the terminal body (100) can make the second vent hole (403) and the air outlet (201) staggered or connected.

2. The medical gas terminal according to claim 1, characterized by The ball seat (4) includes a ball (401) and a guide cylinder (402). The guide cylinder (402) is slidably and sealingly connected to the mounting hole (301). The extrusion member (17) is connected to the guide cylinder (402). The valve core (2) is provided with a ball hole, and the ball (401) cooperates with the ball hole. The base (3) is connected to a pressure ring (8) for pressing the valve core (2) by fasteners. The terminal body (100) is connected to a connector (9), which passes through the pressure ring (8) and is slidably connected to the valve core (2).

3. The medical gas terminal according to claim 2, characterized by The connector (9) includes a connecting rod (901) and a limiting block (902). One end of the connecting rod (901) is connected to the terminal body (100) by a thread, and the other end of the connecting rod (901) passes through the valve core (2) and is connected to the limiting block (902). A third elastic element (11) is press-fitted between the limiting block (902) and the valve core (2), and the elastic element is sleeved on the connecting rod (901).

4. The medical gas terminal according to claim 3, characterized by The limiting block (902) and the connecting rod (901) are connected by threads.

5. The medical gas terminal according to claim 2, characterized in that, The guide tube (402) and the extrusion member (17) are connected by a second elastic member (10).

6. The medical gas terminal according to any one of claims 1-5, characterized in that, The ball seat (4) has a first sealing ring groove at one end of the second vent (403) near the valve core (2), and a first sealing ring (12) is provided in the first sealing ring groove.

7. The medical gas terminal according to any one of claims 1-5, characterized in that, The sealing seat (5) is provided with a second sealing ring groove on the side near the sealing element (6), and a second sealing ring (13) is provided in the second sealing ring groove.

8. The medical gas terminal according to any one of claims 1-5, characterized in that, The side wall of the mounting hole (301) is provided with a third sealing ring groove, and a third sealing ring (14) is provided in the third sealing ring groove.

9. A method for removing a plug-in connector (300) from a medical gas terminal, applicable to the medical gas terminal according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Rotate the terminal body (100) to disconnect the air passage of the terminal body (100) from the air passage of the base (3), so that there is no air pressure inside the terminal body (100); S2. Press the cover (1) to remove the plug connector (300).

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