External gas source connector of water-gas bottle

Abstract

The utility model discloses a steam bottle external air source joint, it includes shell unit and inner seal unit, shell unit includes shell, the shell has a cavity, is equipped with first air inlet, second air inlet and air outlet that all communicate with the cavity, first air inlet is used for communicating with the air pipeline, second air inlet is used for communicating with the air pipeline, and air outlet is used for communicating with the air pipeline. The second gas inlet is used for being communicated with a carbon dioxide gas pipeline, and the gas outlet is used for being communicated with an inner cavity of a water-gas bottle; the inner sealing unit comprises a plug and a driving assembly, the plug is arranged in the cavity, and the driving assembly is connected with the plug and used for driving the plug to alternately plug the first air inlet or the second air inlet. The external air source connector has the advantages that the external air source connector can be communicated with an air pipeline and a carbon dioxide gas pipeline, and air and carbon dioxide gas can be switched back and forth.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an external gas source connector for a water gas cylinder. Background Art

[0002] The water cylinder provided with the electronic endoscope is a container for pure water used for flushing during surgery and a gas transfer device. Its own air inlet channel is connected to the air outlet of the air pump provided by the electronic endoscope, and the gas source is ordinary air from the external environment. Long-term use of the air source during surgery can cause intestinal gas accumulation, resulting in postoperative discomfort and abdominal pain. The input of carbon dioxide gas can effectively prevent and alleviate gas accumulation, while avoiding and reducing tissue burns caused by endoscopic electrosurgical surgery, which is beneficial to postoperative recovery.

[0003] The air inlet interface and the water outlet interface of the water cylinder equipped with the existing electronic endoscope (such as an automatic water and air delivery electronic endoscope system disclosed in application No. 201910663544.9) are a double-layer pipe, with the inner tube for water outlet and the outer tube for air intake. The air inlet interface cannot be connected to the outlet of the carbon dioxide gas pump. Although the joints of a small number of water cylinders can be connected to the outlet of the carbon dioxide gas pump, they cannot switch back and forth between air and carbon dioxide gas. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies and to provide an external gas source connector for a water cylinder to solve the technical problem in the prior art that the connector for the water cylinder equipped with an electronic endoscope cannot switch back and forth between air and carbon dioxide gas.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model provides an external gas source connector for a water gas cylinder, comprising:

[0006] The housing unit comprises a shell having a cavity on which a first air inlet, a second air inlet and an air outlet are provided, each of which is connected to the cavity. The first air inlet is used to communicate with an air pipeline, the second air inlet is used to communicate with a carbon dioxide gas pipeline, and the air outlet is used to communicate with an inner cavity of a water gas cylinder;

[0007] The inner sealing unit includes a plug and a driving assembly, wherein the plug is arranged in the cavity, and the driving assembly is connected to the plug and is used to drive the plug to alternately block the first air inlet or the second air inlet.

[0008] Furthermore, the shell and the cavity are both columnar structures, the first air inlet and the second air inlet are both located on the arc-shaped wall of the shell, and the air outlet is located on a side wall of the shell.

[0009] Further, the plug is of a columnar structure and is rotatably and sealingly arranged in the cavity. An overflow channel is formed in the plug. The air inlet end of the overflow channel is located on the arc-shaped wall of the plug, and the air outlet end of the overflow channel is located on one side wall of the plug and is communicated with the air outlet.

[0010] Further, the driving assembly includes a rotating shaft, a grip rod, a clamping shaft and an elastic member. The rotating shaft is coaxially arranged with the plug. One end of the rotating shaft is fixedly connected to the other side wall of the plug, and the other end of the rotating shaft rotatably extends out of the cavity. One end of the grip rod is fixedly connected to the other end of the rotating shaft. The clamping shaft is arranged parallel to the rotating shaft and is slidably arranged on the grip rod. The clamping shaft can move along the length direction of the rotating shaft. The two ends of the elastic member are respectively fixedly connected to the end of the clamping shaft away from the housing and the grip rod, so that the end of the clamping shaft close to the housing is clamped with the housing.

[0011] Further, a guiding hole extending along the length direction of the rotating shaft is formed in the grip rod, and the clamping shaft slidably penetrates through the guiding hole.

[0012] Further, the housing unit further includes a clamping plate fixedly arranged on the other side wall of the housing. A first clamping hole, a second clamping hole and a third clamping hole are formed in the clamping plate. The first clamping hole, the second clamping hole and the third clamping hole are all located on the rotation path of the clamping shaft and are all used for the end of the clamping shaft close to the housing to be clamped into. The first clamping hole corresponds to the first air inlet, and the second clamping hole corresponds to the second air inlet. When the end of the clamping shaft close to the housing is clamped into the first clamping hole, the air inlet end of the overflow channel is communicated with the first air inlet. When the end of the clamping shaft close to the housing is clamped into the second clamping hole, the air inlet end of the overflow channel is communicated with the second air inlet. When the end of the clamping shaft close to the housing is clamped into the third clamping hole, the air inlet end of the overflow channel is not communicated with the first air inlet and the second air inlet.

[0013] Further, the third clamping hole is located between the first clamping hole and the second clamping hole.

[0014] Further, the elastic member is a spring.

[0015] Further, two annular placement grooves are spaced apart on the cavity wall of the cavity. The first air inlet and the second air inlet are both located between the two placement grooves. The housing unit further includes two sealing rings, and the two sealing rings are respectively arranged in the corresponding placement grooves. The inner sealing unit further includes two snap rings, and the two snap rings are fixedly sleeved on the plug head at intervals and are respectively clamped in the corresponding placement grooves. The snap rings are in contact with the sealing rings.

[0016] Further, the housing unit further includes a first air inlet pipe, a second air inlet pipe and an outlet pipe. One end of the first air inlet pipe is communicated with the first air inlet, and the other end of the first air inlet pipe is used for communicating with an air pipeline. One end of the second air inlet pipe is communicated with the second air inlet, and the other end of the second air inlet pipe is used for communicating with a carbon dioxide gas pipeline. One end of the outlet pipe is communicated with the air outlet, and the other end of the outlet pipe is used for communicating with the inner cavity of the water gas cylinder.

[0017] Compared with the prior art, the beneficial effects of the present utility model include: during use, the first air inlet is communicated with the air pipeline, the second air inlet is communicated with the carbon dioxide gas pipeline, the air outlet is communicated with the inner cavity of the water gas cylinder, and one end of the water outlet pipe is inserted below the liquid level of the water gas cylinder. By controlling the driving assembly, the driving assembly can drive the plug head to alternately block the first air inlet or the second air inlet, so that air or carbon dioxide gas can enter the water gas cylinder according to actual needs. The air or carbon dioxide gas entering above the liquid level of the water gas cylinder will press the water into the water outlet pipe and reach the surgical area. This external gas source joint of the water gas cylinder can not only realize the connection with the air pipeline and the carbon dioxide gas pipeline, but also realize the switching back and forth between air and carbon dioxide gas. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of an external gas source joint of a water gas cylinder provided by the present utility model;

[0019] Figure 2 is Figure 1 a cross-sectional view of an external gas source joint of a water gas cylinder in

[0020] In the figure: 100 - outer shell unit, 110 - housing, 111 - cavity, 1111 - placement groove, 112 - first air inlet, 113 - second air inlet, 114 - air outlet, 120 - clamping plate, 121 - first clamping hole, 122 - second clamping hole, 123 - third clamping hole, 130 - first air inlet pipe, 140 - second air inlet pipe, 150 - air outlet pipe, 200 - inner sealing unit, 210 - plug, 211 - flow-through channel, 212 - air cavity, 213 - flow-through inlet, 214 - flow-through outlet, 220 - driving assembly, 221 - rotating shaft, 222 - grip rod, 2221 - guiding hole, 223 - clamping shaft, 224 - elastic member, 230 - snap ring. Detailed implementation manner

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] The present utility model provides an external gas source connector for a water gas cylinder, and its structure is as Figure 1 - Figure 2 shown, including an outer shell unit 100 and an inner sealing unit 200. The outer shell unit 100 includes a housing 110. The housing 110 has a cavity 111, and is provided with a first air inlet 112, a second air inlet 113 and an air outlet 114 that are all communicated with the cavity 111. The first air inlet 112 is used to communicate with an air pipeline, the second air inlet 113 is used to communicate with a carbon dioxide gas pipeline, and the air outlet 114 is used to communicate with the inner cavity of the water gas cylinder. The inner sealing unit 200 includes a plug 210 and a driving assembly 220. The plug 210 is arranged in the cavity 111, and the driving assembly 220 is connected to the plug 210 and is used to drive the plug 210 to alternately block the first air inlet 112 or the second air inlet 113.

[0023] During use, the first air inlet 112 is communicated with an air pipeline, the second air inlet 113 is communicated with a carbon dioxide gas pipeline, the air outlet 114 is communicated with the inner cavity of the water gas cylinder, and one end of a water outlet pipe is inserted below the liquid level of the water gas cylinder. By controlling the driving assembly 220, the driving assembly 220 can be made to drive the plug 210 to alternately block the first air inlet 112 or the second air inlet 113, so that, according to actual needs, air or carbon dioxide gas can enter the water gas cylinder. The air or carbon dioxide gas entering above the liquid level of the water gas cylinder will press the water into the water outlet pipe and reach the surgical area. This external gas source connector for a water gas cylinder can not only realize the connection with an air pipeline and a carbon dioxide gas pipeline, but also realize the switching back and forth between air and carbon dioxide gas.

[0024] As a preferred embodiment, please refer to Figure 1 and Figure 2 , both the housing 110 and the cavity 111 are columnar structures. The first air inlet 112 and the second air inlet 113 are both located on the arc wall of the housing 110, and the air outlet 114 is located on one side wall of the housing 110, facilitating the plug 210 to alternately block the first air inlet 112 and the second air inlet 113.

[0025] As a preferred embodiment, please refer to Figure 2 , the plug 210 is a columnar structure and is sealed and rotatably arranged in the cavity 111. An air flow passage 211 is formed in the plug 210. The air inlet end of the air flow passage 211 is located on the arc wall of the plug 210, and the air outlet end of the air flow passage 211 is located on one side wall of the plug 210 and is communicated with the air outlet 114. During the rotation of the plug 210, the air inlet end of the air flow passage 211 will alternately communicate with the first air inlet 112 and the second air inlet 113, or the air inlet end of the air flow passage 211 is not communicated with both the first air inlet 112 and the second air inlet 113, and during the rotation of the plug 210, it is ensured that the air outlet end of the air flow passage 211 is always communicated with the air outlet 114.

[0026] As a preferred embodiment, please refer to Figure 2 , the plug 210 has an air cavity 212. An air flow inlet 213 communicated with the air cavity 212 is formed on the arc wall of the plug 210, and an air flow outlet 214 communicated with the air cavity 212 is formed on one side wall of the plug 210. The air flow inlet 213, the air cavity 212 and the air flow outlet 214 form the air flow passage 211, and the air can be stored through the air cavity 212.

[0027] As a preferred embodiment, please refer to Figure 2, the driving assembly 220 includes a rotating shaft 221, a grip rod 222, a clamping shaft 223 and an elastic member 224. The rotating shaft 221 is coaxially arranged with the plug 210. One end of the rotating shaft 221 is fixedly connected to the other side wall of the plug 210. The other end of the rotating shaft 221 rotates and extends out of the cavity 111. One end of the grip rod 222 is fixedly connected to the other end of the rotating shaft 221. The clamping shaft 223 is arranged parallel to the rotating shaft 221 and is slidably arranged on the grip rod 222. The clamping shaft 223 can move along the length direction of the rotating shaft 221. Both ends of the elastic member 224 are respectively fixedly connected to the end of the clamping shaft 223 far from the housing 110 and the grip rod 222, so that the end of the clamping shaft 223 close to the housing 110 is clamped with the housing 110. Pushing the clamping shaft 223 in the direction away from the housing 110 can release the clamping of the clamping shaft 223 with the housing 110. Then, by operating the grip rod 222, the rotating shaft 221 can be rotated, and the plug 210 can be driven to rotate. During the rotation of the plug 210, the air outlet end of the flow-through channel 211 will alternately communicate with the first air inlet 112 and the second air inlet 113. When the air outlet end of the flow-through channel 211 communicates with the first air inlet 112 or the second air inlet 113, releasing the clamping shaft 223, the elastic member 224 will release elastic potential energy, so that the end of the clamping shaft 223 close to the housing 110 is clamped with the housing 110 again, realizing the fixation of the rotating shaft 221.

[0028] As a preferred embodiment, please refer to Figure 2 , a guiding hole 2221 extending along the length direction of the rotating shaft 221 is formed on the grip rod 222. The clamping shaft 223 slidably penetrates through the guiding hole 2221, and the movement of the clamping shaft 223 can be guided through the guiding hole 2221.

[0029] As a preferred embodiment, please refer to Figure 2, the housing unit 100 further includes a clamping plate 120 fixedly provided on another side wall of the housing 110. The clamping plate 120 is provided with a first clamping hole 121, a second clamping hole 122 and a third clamping hole 123. The first clamping hole 121, the second clamping hole 122 and the third clamping hole 123 are all located on the rotation path of the clamping shaft 223 and are all used for the end of the clamping shaft 223 close to the housing 110 to be clamped into. The first clamping hole 121 corresponds to the first air inlet 112, and the second clamping hole 122 corresponds to the second air inlet 113. When the end of the clamping shaft 223 close to the housing 110 is clamped into the first clamping hole 121, the air inlet end of the flow passage 211 is communicated with the first air inlet 112. When the end of the clamping shaft 223 close to the housing 110 is clamped into the second clamping hole 122, the air inlet end of the flow passage 211 is communicated with the second air inlet 113. When the end of the clamping shaft 223 close to the housing 110 is clamped into the third clamping hole 123, the air inlet end of the flow passage 211 is not communicated with the first air inlet 112 and the second air inlet 113. Therefore, by clamping the clamping shaft 223 with the first clamping hole 121, the second clamping hole 122 and the third clamping hole 123, the fixing of the rotating shaft 221 can be realized, and the communication between the air inlet end of the flow passage 211 and the first air inlet 112 or the second air inlet 113 can be made more stable.

[0030] As a preferred embodiment, please refer to Figure 2 , the third clamping hole 123 is located between the first clamping hole 121 and the second clamping hole 122. When the plug 210 rotates forward or backward, the air inlet end of the flow passage 211 can be communicated with the first air inlet 112 or the second air inlet 113.

[0031] As a preferred embodiment, the elastic member 224 is a spring, which can accumulate and release elastic potential energy.

[0032] As a preferred embodiment, please refer to Figure 2, two annular placement grooves 1111 are spaced apart on the cavity wall of the cavity 111. The first air inlet 112 and the second air inlet 113 are both located between the two placement grooves 1111. The housing unit 100 further includes two sealing rings, and the two sealing rings are respectively arranged in the corresponding placement grooves 1111. The inner sealing unit 200 further includes two snap rings 230. The two snap rings 230 are fixedly sleeved on the plug 210 at intervals and are respectively clamped in the corresponding placement grooves 1111. The snap rings 230 are in contact with the sealing rings, which can seal the first air inlet 112 and the second air inlet 113, and prevent the gas reaching the first air inlet 112 and the second air inlet 113 or the gas in the cavity 111 from leaking along the gap between the rotating shaft 221 and the housing 110.

[0033] As a preferred embodiment, please refer to Figure 1 and Figure 2 , the housing unit 100 further includes a first air inlet pipe 130, a second air inlet pipe 140 and an air outlet pipe 150. One end of the first air inlet pipe 130 is communicated with the first air inlet 112, and the other end of the first air inlet pipe 130 is used to be communicated with an air pipeline. One end of the second air inlet pipe 140 is communicated with the second air inlet 113, and the other end of the second air inlet pipe 140 is used to be communicated with a carbon dioxide gas pipeline. One end of the air outlet pipe 150 is communicated with the air outlet 114, and the other end of the air outlet pipe 150 is used to be communicated with the inner cavity of a water gas cylinder. The air can be conveyed through the first air inlet pipe 130, the carbon dioxide gas can be conveyed through the second air inlet pipe 140, and the gas coming out of the cavity 111 can be conveyed through the air outlet pipe 150.

[0034] To better understand the present invention, the working principle of the technical solution of the present invention will be described in detail below in conjunction with Figure 1 - Figure 2 :

[0035] In use, the other end of the first air inlet pipe 130 is communicated with an air pipeline, the other end of the second air inlet pipe 140 is communicated with a carbon dioxide gas pipeline, the other end of the air outlet pipe 150 is communicated with the inner cavity of a water gas cylinder, and one end of the water outlet pipe is inserted below the liquid level of the water gas cylinder. Pushing the clamping shaft 223 to move away from the housing 110 can release the clamping of the clamping shaft 223 with the housing 110. Then, by operating the grip rod 222, the rotating shaft 221 is rotated, and the plug 210 is driven to rotate. When the clamping shaft 223 corresponds to the first clamping hole 121, the clamping shaft 223 is released. The elastic member 224 will release elastic potential energy, so that when the end of the clamping shaft 223 close to the housing 110 is clamped into the first clamping hole 121, at this time, the air inlet end of the flow-through channel 211 is communicated with the first air inlet 112. When the end of the clamping shaft 223 close to the housing 110 is clamped into the second clamping hole 122, the air inlet end of the flow-through channel 211 is communicated with the second air inlet 113. When the end of the clamping shaft 223 close to the housing 110 is clamped into the third clamping hole 123, the air inlet end of the flow-through channel 211 is not communicated with either the first air inlet 112 or the second air inlet 113. Thus, according to actual needs, air or carbon dioxide gas can enter the water gas cylinder. The air or carbon dioxide gas above the liquid level of the water gas cylinder will press the water into the water outlet pipe and reach the surgical area. This external gas source joint of the water gas cylinder can not only realize the connection with the air pipeline and the carbon dioxide gas pipeline, but also realize the switching back and forth between air and carbon dioxide gas.

[0036] The external gas source joint of the water gas cylinder provided by the present utility model has the following beneficial effects:

[0037] (1) When the end of the clamping shaft 223 close to the housing 110 is clamped into the first clamping hole 121, the air inlet end of the flow-through channel 211 is communicated with the first air inlet 112. When the end of the clamping shaft 223 close to the housing 110 is clamped into the second clamping hole 122, the air inlet end of the flow-through channel 211 is communicated with the second air inlet 113. When the end of the clamping shaft 223 close to the housing 110 is clamped into the third clamping hole 123, the air inlet end of the flow-through channel 211 is not communicated with either the first air inlet 112 or the second air inlet 113;

[0038] (2) The rotation shaft 221 can be fixed by the clamping of the clamping shaft 223 with the first clamping hole 121, the second clamping hole 122 and the third clamping hole 123, so that the connection between the air inlet end of the flow-through channel 211 and the first air inlet 112 or the second air inlet 113 is more stable;

[0039] (3)The external gas source connector of this water gas cylinder can not only achieve the connection with the air pipeline and the carbon dioxide gas pipeline, but also realize the switching back and forth between air and carbon dioxide gas.

[0040] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A water gas cylinder external gas source connector, characterized in that: include: The housing unit comprises a shell having a cavity on which a first air inlet, a second air inlet and an air outlet are provided, each of which is connected to the cavity. The first air inlet is used to communicate with an air pipeline, the second air inlet is used to communicate with a carbon dioxide gas pipeline, and the air outlet is used to communicate with an inner cavity of a water gas cylinder; The inner sealing unit includes a plug and a driving assembly, wherein the plug is arranged in the cavity, and the driving assembly is connected to the plug and is used to drive the plug to alternately block the first air inlet or the second air inlet.

2. The external gas source connector for a water gas cylinder according to claim 1, characterized in that: The shell and the cavity are both columnar structures, the first air inlet and the second air inlet are both located on the arc-shaped wall of the shell, and the air outlet is located on a side wall of the shell.

3. The external gas source connector for a water gas cylinder according to claim 2, characterized in that: The plug is a columnar structure and is sealed and rotatably arranged in the cavity. A flow channel is provided on the plug. The air inlet end of the flow channel is located on the arc-shaped wall of the plug, and the air outlet end of the flow channel is located on a side wall of the plug and is connected to the air outlet.

4. The external gas source connector for a water gas cylinder according to claim 3, characterized in that: The driving assembly includes a rotating shaft, a grip rod, a clamping shaft and an elastic member. The rotating shaft is coaxially arranged with the plug, one end of the rotating shaft is fixedly connected to the other side wall of the plug, the other end of the rotating shaft is rotated and extended out of the cavity, one end of the grip rod is fixedly connected to the other end of the rotating shaft, the clamping shaft is arranged parallel to the rotating shaft and is slidably arranged on the grip rod, the clamping shaft can move along the length direction of the rotating shaft, and the two ends of the elastic member are respectively fixedly connected to the end of the clamping shaft away from the shell and the grip rod, so that the end of the clamping shaft close to the shell is clamped with the shell.

5. The external gas source connector for a water gas cylinder according to claim 4, characterized in that: The gripping rod is provided with a guide hole extending along the length direction of the rotating shaft, and the clamping shaft slides through the guide hole.

6. The external gas source connector for a water gas cylinder according to claim 4, characterized in that: The housing unit also includes a clamping plate, which is fixedly arranged on the other side wall of the shell, and is provided with a first clamping hole, a second clamping hole and a third clamping hole. The first clamping hole, the second clamping hole and the third clamping hole are all located on the rotation path of the clamping shaft, and are all used for the end of the clamping shaft close to the shell to be clamped in, the first clamping hole and the first air inlet correspond to each other, and the second clamping hole and the second air inlet correspond to each other. When the end of the clamping shaft close to the shell is clamped into the first clamping hole, the air inlet end of the flow channel is connected with the first air inlet, when the end of the clamping shaft close to the shell is clamped into the second clamping hole, the air inlet end of the flow channel is connected with the second air inlet, and when the end of the clamping shaft close to the shell is clamped into the third clamping hole, the air inlet end of the flow channel is not connected with the first air inlet and the second air inlet.

7. The external gas source connector for a water gas cylinder according to claim 6, characterized in that: The third clamping hole is located between the first clamping hole and the second clamping hole.

8. The external gas source connector for a water gas cylinder according to claim 6, characterized in that: The elastic member is a spring.

9. The external gas source connector for a water gas cylinder according to claim 3, characterized in that: Two annular placement grooves are arranged on the cavity wall, the first air inlet and the second air inlet are both located between the two placement grooves, the outer shell unit also includes two sealing rings, the two sealing rings are respectively arranged in the corresponding placement grooves, the inner sealing unit also includes two clamping rings, the two clamping rings are fixedly sleeved on the plug at intervals, and are respectively clamped in the corresponding placement grooves, and the clamping rings are in contact with the sealing rings.

10. The external gas source connector for a water gas cylinder according to claim 1, characterized in that: The outer shell unit also includes a first air inlet pipe, a second air inlet pipe and an air outlet pipe, one end of the first air inlet pipe is connected to the first air inlet port, the other end of the first air inlet pipe is used to connect to the air pipeline, one end of the second air inlet pipe is connected to the second air inlet port, the other end of the second air inlet pipe is used to connect to the carbon dioxide gas pipeline, one end of the air outlet pipe is connected to the air outlet, and the other end of the air outlet pipe is used to connect to the inner cavity of the water gas bottle.

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