Soda lime tank clamping mechanism, breathing loop device and anaesthesia machine

Abstract

The utility model provides a soda lime tank clamping mechanism, a breathing circuit device and an anaesthesia machine. The soda lime tank clamping mechanism comprises a fixing frame, a top cover assembly, a lifting assembly and a soda lime tank. The fixing frame comprises a first fixing piece, a connecting piece and a second fixing piece, the first fixing piece and the second fixing piece are oppositely arranged at an interval, and the two ends of the connecting piece are connected with the first fixing piece and the second fixing piece respectively; the fixing frame is used for being fixed to a breathing circuit body. The top cover assembly is fixed to the first fixing piece and is provided with a sealing structure. The lifting assembly is arranged on the second fixing piece and is provided with a mounting position; the soda lime tank is arranged at the installation position and located between the top cover assembly and the lifting assembly. The soda lime tank clamping mechanism does not need to consider the influence of the machining precision of the main body parts of the anaesthesia machine, the limitation that the main body of the anaesthesia machine needs to be provided with a corresponding mounting and fixing structure is avoided, and the operability of upgrading and replacement of the soda lime tank clamping mechanism of the anaesthesia machine is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anesthetic machine equipment, in particular to a sodium lime tank clamping mechanism, a breathing circuit device and an anesthetic machine. BACKGROUND

[0002] In the anesthetic machine circuit, the sodium lime tank as the core carbon dioxide absorption component needs to remove the carbon dioxide exhaled by the patient in real time through chemical reaction to ensure the airtightness and safety of the anesthetic gas circulation system. However, the sodium lime will gradually saturate in the continuous absorption process, that is, the medical staff needs to operate the sodium lime tank more frequently to replace the carbon dioxide absorption material. The quick disassembly and assembly design of the sodium lime tank is of great significance to improve the operation efficiency, ensure the safety of the patient and reduce the labor intensity of the medical staff. If the disassembly and assembly process is too cumbersome, it will increase the work burden of the medical staff and reduce the operation efficiency, or the non-standard disassembly and assembly of the sodium lime tank may cause gas leakage, which directly affects the accuracy of the end-tidal carbon dioxide (PetCO2) monitoring.

[0003] At present, the lifting device for replacing the sodium lime tank needs to be connected to the protruding force beam on the anesthetic machine host, and in order to realize the airtightness of the breathing circuit, the locking of the sodium lime tank needs the lifting device to provide a large clamping force to the sodium lime tank. In order to prevent the breathing circuit above the sodium lime tank from being subjected to unilateral force and causing the breathing circuit to be angularly offset relative to the anesthetic machine host, which may cause leakage of the connection interface between the breathing circuit and the anesthetic machine, the parts above the sodium lime tank also need to be connected to the anesthetic machine host by a force structure to limit the clamping force received by the sodium lime tank to the local position above and below the sodium lime tank, and prevent the breathing circuit from being subjected to unilateral force.

[0004] However, the lifting device and the force structure above the sodium lime tank need to be fixedly connected to the anesthetic machine host respectively, in order to ensure the consistency of the locking force when the sodium lime tank is locked, the parts on the anesthetic machine host which cooperate with the lifting device and the force structure above the sodium lime tank need to have high size and position tolerance, and the influence of the machining precision of the parts of the anesthetic machine host needs to be considered. In addition, the mounting structure for mounting the lifting device needs to be provided on the anesthetic machine host, so a force beam for bearing force needs to be provided on the anesthetic machine host, which undoubtedly increases the limitation of the structure of the anesthetic machine host. When the breathing circuit is upgraded, the force beam and other parts of the anesthetic machine host also need to be upgraded, and the upgrading cost of the breathing circuit is high. Invention content

[0005] The present application provides a sodium lime tank clamping mechanism, a breathing circuit device and an anesthetic machine, which can solve the problem of the influence of the sodium lime tank clamping mechanism on the anesthetic machine host.

[0006] To solve the above technical problems, the application provides a sodium lime tank clamping mechanism, which comprises a fixed frame, a top cover assembly, a lifting assembly and a sodium lime tank.

[0007] The top cover assembly is fixed to one side of the first fixing part facing the second fixing part, and one end of the top cover assembly facing the second fixing part has a sealing structure; the top cover assembly is used for communication with the breathing circuit body; the lifting assembly is arranged on the second fixing part, and one side of the lifting assembly facing the first fixing part has a mounting position; the sodium lime tank is arranged in the mounting position and between the top cover assembly and the lifting assembly, and one end of the sodium lime tank facing the top cover assembly has an opening part;

[0008] The lifting assembly is used to drive the mounting position to move, so that the sodium lime tank can approach or move away from the first fixing part, so as to switch the locking state and the unlocking state of the sodium lime tank clamping mechanism; in the locking state, the opening part abuts against the sealing structure, and the sodium lime tank communicates with the breathing circuit body through the top cover assembly; in the unlocking state, the opening part is separated from the sealing structure.

[0009] In an embodiment, one side of the top cover assembly facing the second fixing part has a first air inlet and a first air outlet, the opening part surrounds to form a first opening and a second opening, the sodium lime tank has a containing cavity therein, the containing cavity is used for containing sodium lime, and two ends of the containing cavity are respectively communicated to the first opening and the second opening;

[0010] In the locking state, the first air inlet and the first air outlet are respectively communicated to the breathing circuit body, the first air inlet is communicated to the first opening, the first air outlet is communicated to the second opening, and the sealing structure is used to seal the gap between the first air inlet and the first opening and the gap between the first air outlet and the second opening; in the unlocking state, the first air inlet and the first air outlet are blocked from the breathing circuit body.

[0011] In an embodiment, the top cover assembly comprises a filter screen, and the filter screen is installed at the first air outlet to block the sodium lime from passing through the first air outlet.

[0012] In an embodiment, the top cover assembly comprises a shell and an elastic valve core, the shell forms a first air inlet, a first air outlet, a second air inlet, a second air outlet, a first cavity and a second cavity, the second air inlet and the second air outlet are respectively communicated to the breathing circuit body; the first cavity is communicated to the second air inlet; the second cavity is communicated to the first air inlet; the elastic valve core is arranged in the shell, and the elastic valve core can move under the action of the elastic potential energy of the sodium lime tank and the elastic valve core;

[0013] In the unlocked state, the elastic valve core opens the air path between the first cavity and the second gas outlet, and blocks the air path between the first cavity and the second cavity and the air path between the first gas outlet and the second gas outlet; in the locked state, the elastic valve core blocks the air path between the first cavity and the second gas outlet, and opens the air path between the first cavity and the second cavity and the air path between the first gas outlet and the second gas outlet.

[0014] In an embodiment, the lifting assembly comprises a driving member and a supporting member, the driving member is fixed to the second fixing member, the supporting member is provided with a mounting position, and the driving member is used to move the supporting member to be close to or away from the first fixing member; one of the second fixing member and the supporting member is provided with a guide channel, and the other is provided with a guide part, part of the guide part is arranged in the guide channel, and the guide channel and the guide part cooperate to make the supporting member do linear reciprocating motion.

[0015] In an embodiment, the lifting assembly further comprises a transmission member, the transmission member is fixedly connected with the driving member, and the transmission member is used to convert the rotation of the driving member into the linear motion of the supporting member.

[0016] In an embodiment, the driving member is a handle, the transmission member is a cam, the supporting member has an abutting part on the side facing the second fixing member, and the abutting part abuts against the cam.

[0017] In an embodiment, the mounting position is provided with a first positioning part, the sodium lime tank is provided with a second positioning part, and the first positioning part and the second positioning part cooperate to make the sodium lime tank and the mounting position have a unique relative position.

[0018] To solve the above technical problems, the present application provides a breathing circuit device, which comprises a breathing circuit body and the sodium lime tank clamping mechanism of any of the above embodiments, and the sodium lime tank clamping mechanism is fixed to the breathing circuit body.

[0019] To solve the above technical problems, the present application provides an anesthesia machine, which comprises an anesthesia machine body and the breathing circuit device of any of the above embodiments, and the breathing circuit body is installed on the anesthesia machine body.

[0020] The sodium lime tank clamping mechanism provided by the application does not need to install and fix the force-bearing parts on the anesthesia machine body, but through the design of the fixed frame, when the lifting assembly and the top cover assembly clamp the sodium lime tank, the clamping force only acts on the inside of the frame, so as to ensure the locking force by only ensuring the machining precision of the parts forming the frame, without considering the influence of the machining precision of the anesthesia machine body parts. The frame of the sodium lime tank clamping mechanism is fixed on the breathing circuit body, not on the anesthesia machine body, thereby avoiding the limitation that the anesthesia machine main machine needs to be provided with the corresponding installation fixing structure, and when the sodium lime tank clamping mechanism of the breathing circuit is upgraded, only the entire breathing circuit needs to be replaced, without the need of synchronously upgrading the anesthesia machine body with the sodium lime tank clamping mechanism matching parts, thereby improving the operability of the anesthesia machine sodium lime tank clamping mechanism upgrade and replacement and reducing the upgrade cost after sale. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A partial structure schematic diagram of an anesthesia machine is provided for an embodiment of the application.

[0022] Figure 2 A structure schematic diagram of a sodium lime tank clamping mechanism in an unlocked state is provided for an embodiment of the application.

[0023] Figure 3 An exploded view of a sodium lime tank clamping mechanism is provided for an embodiment of the application.

[0024] Figure 4 A sectional view of Figure 2 .

[0025] Figure 5 A structure schematic diagram of a sodium lime tank clamping mechanism in a locked state is provided for an embodiment of the application.

[0026] Figure 6 A sectional view of Figure 5 .

[0027] Figure 7 Another sectional view of Figure 2 .

[0028] Figure 8 Another sectional view of Figure 5 .

[0029] Figure 9 A structure schematic diagram of a second fixing part is provided for an embodiment of the application.

[0030] Figure 10 An exploded view of a sodium lime tank clamping mechanism is provided for another embodiment of the application.

[0031] The drawings show: an anesthesia machine main body 10, a breathing circuit device 20, a breathing circuit main body 30, a sodium lime tank clamping mechanism 40, a fixed frame 41, a first fixing piece 411, a connecting piece 412, a second fixing piece 413, a guide channel 4131, a slotted hole 4132, a through hole 4133, a top cover assembly 42, a sealing structure 421, a first sealing piece 4211, a second sealing piece 4212, a first air inlet 422, a first air outlet 423, a shell 424, a fixed seat 4241, a sodium lime tank cover 4242, an elastic piece 425, a filter screen 426, an elastic valve core 427, a second air inlet 4281, a second air outlet 4282, a first cavity 4283, a second cavity 4284, a lifting assembly 43, a mounting position 431, a first positioning part 4311, a driving piece 432, a supporting piece 433, a guide part 4331, an abutting part 4332, a transmission piece 434, a sodium lime tank 44, an opening part 441, a first opening 442, a second opening 443, a containing cavity 444, a second positioning part 445. DETAILED DESCRIPTION

[0032] The application will be further described in details through specific embodiments and the drawings. In different embodiments, similar elements are marked with similar element numbers. In the following embodiments, many details are described in order to make the application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials or methods. In some cases, some operations related to the application are not shown or described in the specification, in order to avoid the core part of the application being overwhelmed by too much description, and it is not necessary for those skilled in the art to describe these related operations in detail according to the description in the specification and the general technical knowledge in the art.

[0033] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate way to form various embodiments, and the operation steps involved in each embodiment can also be sequentially adjusted or adjusted in a manner that those skilled in the art can easily see. Therefore, the specification and drawings are only for the purpose of clearly describing one embodiment, and do not mean that the composition and / or order is necessary.

[0034] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "coupling" in this application include direct and indirect connections (couplings) unless otherwise specified.

[0035] The terms "parallel", "perpendicular" and the like are defined in relation to the current process level, rather than the absolute strict definition in the mathematical sense, and a small amount of deviation is allowed, and approximate parallel, approximate perpendicular and the like are also allowed. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B is between 0° and 10°. For example, A is perpendicular to B, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B is between 80° and 100°. The orientation terms mentioned in the embodiments of the present application, such as "upper", "inner", "outer", "side" and the like, are only the directions of the drawings, therefore, the orientation terms are used to better and more clearly illustrate and understand the embodiments of the present application, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0036] Please refer to Figure 1 The present application provides an anesthesia machine, which comprises an anesthesia machine body 10 and a breathing circuit device 20, and the anesthesia machine of the present application Figure 1 Only a part of the structure of the anesthesia machine body 10 is provided, wherein the breathing circuit device 20 comprises a breathing circuit body 30 and a soda lime tank clamping mechanism 40, the breathing circuit body 30 is installed on the anesthesia machine body 10, and the soda lime tank clamping mechanism 40 is fixed on the breathing circuit body 30. Specifically, the side wall of the breathing circuit body 30 is connected with the anesthesia machine body 10, and the soda lime tank clamping mechanism 40 is fixed below the breathing circuit body 30.

[0037] As shown in Figure 2 and Figure 3 The present application provides a soda lime tank clamping mechanism 40, which comprises a fixed frame 41, a top cover assembly 42, a lifting assembly 43 and a soda lime tank 44. The fixed frame 41 comprises a first fixing member 411, a connecting member 412 and a second fixing member 413, the first fixing member 411 and the second fixing member 413 are oppositely arranged at intervals, and the two ends of the connecting member 412 are connected with the first fixing member 411 and the second fixing member 413 respectively. The number of the connecting member 412 can be two, and the two connecting members 412 are oppositely arranged at intervals, so that the first fixing member 411, the second fixing member 413 and the two connecting members 412 cooperate to form a rectangular fixed frame 41. Preferably, the first fixing member 411, the connecting member 412 and the second fixing member 413 are supported by a metal rigid material and are rigidly connected. The fixed frame 41 is used for fixing on the breathing circuit body 30, and preferably, the first fixing member 411 of the fixed frame 41 is fastened below the breathing circuit body 30.

[0038] The top cover assembly 42 is fixed to the side of the first fixing member 411 facing the second fixing member 413. Generally, the top cover assembly 42 is located between the two connecting members 412. Figures 2-4 As shown, the top cover assembly 42 has a sealing structure 421 at one end facing the second fixing member 413. The sealing structure 421 may be a sealing element included in the top cover assembly 42, which is the sealing structure 421 on the top cover assembly 42.

[0039] The top cover assembly 42 is used to communicate with the breathing circuit body 30. The first fixing member 411 may be provided with a clearance, so that the top cover assembly 42 can communicate with the breathing circuit body 30 above the first fixing member 411 through the clearance on the first fixing member 411.

[0040] like Figures 2-4 As shown, the lifting assembly 43 is disposed on the second fixing member 413. The side of the lifting assembly 43 facing the first fixing member 411 has a mounting position 431 for placing the soda lime container 44. The soda lime container 44 is disposed in the mounting position 431 and located between the top cover assembly 42 and the lifting assembly 43, so as to be clamped between the top cover assembly 42 and the lifting assembly 43 under the action of the lifting assembly 43. The end of the soda lime container 44 facing the top cover assembly 42 has an opening 441, which can be formed to facilitate air communication between the soda lime container 44 and the top cover assembly 42.

[0041] The lifting assembly 43 is used to drive the mounting position 431 to move so that the soda lime container 44 can move closer to or further away from the first fixing member 411 to switch the locking and unlocking states of the soda lime container clamping mechanism 40. Figure 2 and Figure 4 This indicates the unlocked state of the soda lime container clamping mechanism 40. Figure 5 and Figure 6 This is the locked state of the soda lime container clamping mechanism 40.

[0042] In the locked state, such as Figure 5 and Figure 6 As shown, the opening 441 of the soda lime container 44 abuts against the sealing structure 421 to prevent gas leakage from the gap between the soda lime container 44 and the top cover assembly 42, ensuring the airtightness of the connection between the soda lime container 44 and the top cover assembly 42. The soda lime container 44 is connected to the breathing circuit body 30 through the top cover assembly 42. In the locked state, the soda lime container 44 is installed in place, and the patient's exhaled gas can enter the breathing circuit body 30, then enter the soda lime container 44 through the top cover assembly 42 for carbon dioxide absorption, and finally return from the soda lime container 44 to the breathing circuit body 30 through the top cover assembly 42.

[0043] When unlocked, such as Figure 2 and Figure 4As shown, the opening 441 separates from the sealing structure 421, and the gas in the breathing circuit will not pass through the soda lime canister 44. At this time, the soda lime canister 44 can be removed and replaced. When the lifting assembly 43 drives the mounting position 431 to move closer to the first fixing member 411 until the soda lime canister 44 abuts against the top cover assembly 42, the soda lime canister clamping mechanism 40 changes from the unlocked state to the locked state; when the lifting assembly 43 drives the mounting position 431 away from the first fixing member 411, the soda lime canister 44 separates from the top cover assembly 42, and the soda lime canister clamping mechanism 40 changes from the locked state to the unlocked state.

[0044] The soda lime container clamping mechanism 40 provided in this application does not require its force-bearing parts to be installed and fixed to the anesthesia machine body 10. Instead, through the design of a fixed frame 41, when the lifting assembly 43 and the top cover assembly 42 clamp the soda lime container 44, the clamping force only acts inside the frame. Therefore, to ensure the locking force, the locking force is not transmitted to the breathing circuit body 30, and only the machining accuracy of the parts forming the frame needs to be ensured, without considering the influence of the machining accuracy of the parts of the anesthesia machine body 10. Furthermore, the frame of the soda lime container clamping mechanism 40 in this application is fixed to the breathing circuit body 30, not to the anesthesia machine body 10. This avoids the limitation of needing to set a corresponding installation and fixing structure on the anesthesia machine host. Moreover, when upgrading the soda lime container clamping mechanism 40 of the breathing circuit, only the entire breathing circuit needs to be replaced, without the need for a simultaneous upgrade of the parts of the soda lime container clamping mechanism 40 on the anesthesia machine body 10. This improves the operability of upgrading and replacing the soda lime container clamping mechanism 40 of the anesthesia machine and reduces after-sales upgrade costs.

[0045] like Figure 7 and Figure 8 As shown, in one embodiment, the top cover assembly 42 has a first air inlet 422 and a first air outlet 423 on the side facing the second fixing member 413. Specifically, the top cover assembly 42 includes a housing 424, which forms the first air inlet 422 and the first air outlet 423. The housing 424 further includes a fixing seat 4241 and a soda lime can lid 4242. The fixing seat 4241 is fixed to the first fixing member 411, and the soda lime can lid 4242 is disposed on the side of the fixing seat 4241 facing the second fixing member 413. The portion of the fixing seat 4241 facing the second fixing member 413 forms the first air inlet 422. Preferably, the first air inlet 422 and the soda lime can lid 4242 are arranged side by side, and the first air outlet 423 is formed in the middle of the soda lime can lid 4242.

[0046] The opening part 441 of the sodium lime tank 44 is surrounded to form a first opening 442 and a second opening 443, and the sodium lime tank 44 has a containing cavity 444 therein for containing sodium lime, and the two ends of the containing cavity 444 are communicated to the first opening 442 and the second opening 443 respectively, specifically, the upper end of the containing cavity 444 is communicated to the first opening 442, and the lower end of the containing cavity 444 is communicated to the second opening 443.

[0047] In the locked state, as shown in Figure 8 The first air inlet 422 and the first air outlet 423 are communicated to the breathing circuit body 30 through the top cover assembly 42 respectively, wherein the first air inlet 422 is communicated to the first opening 442, and the first air outlet 423 is communicated to the second opening 443. The air flow of the breathing circuit body 30 passes through the first air inlet 422 of the top cover assembly 42, the first opening 442, the containing cavity 444, the second opening 443 and the first air outlet 423 in sequence and returns to the breathing circuit body 30.

[0048] The sealing structure 421 is used to seal the gap between the first air inlet 422 and the first opening 442 and the gap between the first air outlet 423 and the second opening 443, so as to ensure the air tightness of the air path communication between the first air inlet 422 and the first opening 442 and the air tightness of the air path communication between the first air outlet 423 and the second opening 443. In the unlocked state, the first air inlet 422 and the first air outlet 423 are blocked with the breathing circuit body 30, so as to prevent air from entering the breathing circuit body 30 from the first air inlet 422 and the first air outlet 423.

[0049] Specifically, the sealing structure 421 can include a first sealing element 4211 and a second sealing element 4212, the first sealing element 4211 is arranged at the first air inlet 422, and the second sealing element 4212 can be wrapped on the outer wall of the sodium lime tank cover body 4242. Thus, in the locked state, the opening part 441 surrounded to form the first opening 442 can be inserted into the first sealing element 4211 and communicated through the first sealing element 4211 and the first air inlet 422, and the opening part 441 surrounded to form the second opening 443 can abut against the second sealing element 4212, so as to ensure the sealing of the air path communication between the second opening 443 and the first air outlet 423.

[0050] The sodium lime tank cover body 4242 can be installed below the fixed seat 4241 by the elastic member 425, and the two ends of the elastic member 425 are connected with the sodium lime tank cover body 4242 and the fixed seat 4241 respectively. In the unlocked state, the sodium lime tank cover body 4242 is spaced apart from the bottom wall of the fixed seat 4241 under the action of the elastic member 425, and in the locked state, the sodium lime tank 44 lifts the second sealing member 4212 under the action of the lifting assembly 43, so that the sodium lime tank cover body 4242 moves towards the shell 424 until the sodium lime tank cover body 4242 abuts against the fixed seat 4241, so that the sodium lime tank 44 is clamped between the top cover assembly 42 and the lifting assembly 43. By arranging the elastic member 425, the abutment between the sodium lime tank 44 and the top cover assembly 42 can have a certain buffer, and the elastic member 425 can enable the elastic valve core 427 in the shell 424 to move, which will be described in detail below.

[0051] In an embodiment, as shown in Figure 7 and Figure 8 The top cover assembly 42 comprises a filter screen 426, which is installed at the first air outlet 423 to block the sodium lime from passing through the first air outlet 423. Specifically, the filter screen 426 can be fixed at the first air outlet 423 of the sodium lime tank cover body 4242 by a snap spring or the like. The installation of the filter screen 426 can effectively block the sodium lime outside the top cover assembly 42, avoiding the situation that the sodium lime enters the top cover assembly 42 during the movement of the staff tilting, turning and the like of the breathing circuit, causing poor sealing of the valve ports of the top cover assembly 42.

[0052] As shown in Figure 7 and Figure 8As shown, in an embodiment, the top cover assembly 42 comprises a housing 424 and an elastic valve core 427, the housing 424 forms the first gas inlet 422, the first gas outlet 423, the second gas inlet 4281, the second gas outlet 4282, the first cavity 4283 and the second cavity 4284, wherein the second gas inlet 4281 and the second gas outlet 4282 are arranged on the side of the housing 424 facing the first fixing member 411. The second gas inlet 4281 and the second gas outlet 4282 are in communication with the breathing circuit body 30 respectively, the first cavity 4283 is in communication with the second gas inlet 4281; the second cavity 4284 is in communication with the first gas inlet 422. The elastic valve core 427 is arranged in the housing 424, and the elastic valve core 427 can move under the action of the sodium lime tank 44 and the elastic potential energy of the elastic valve core 427. Specifically, the elastic valve core 427 abuts against the sodium lime tank cover body 4242, when the sodium lime tank 44 is lifted by the lifting assembly 43 and abuts against the second sealing member 4212 on the sodium lime tank cover body 4242, the sodium lime tank cover body 4242 moves towards the housing 424, the elastic member 425 installed on the sodium lime tank cover body 4242 generates a downward elastic force, the sodium lime tank cover body 4242 pushes the elastic valve core 427 to move upwards, and the elastic valve core 427 generates a downward elastic force. When the sodium lime tank 44 is lowered by the lifting assembly 43 and separated from the second sealing member 4212, the sodium lime tank cover body 4242 moves away from the housing 424 under the action of gravity and the elastic force of the elastic member 425, and the elastic valve core 427 also moves downwards under the action of gravity and the elastic force of the elastic valve core 427. Thus, according to whether the sodium lime tank 44 is installed in place, the position of the elastic valve core 427 in the housing 424 can be switched, so that the gas path inside the top cover assembly 42 can be adjusted by this point.

[0053] As shown, in the unlocked state, Figure 7 the elastic valve core 427 opens the gas path between the first cavity 4283 and the second gas outlet 4282, so that, since the first cavity 4283 is in communication with the second gas inlet 4281, the gas in the breathing circuit body 30 can enter the first cavity 4283 through the second gas inlet 4281, flow from the first cavity 4283 to the second gas outlet 4282, and then flow from the second gas outlet 4282 to the breathing circuit body 30. Moreover, the elastic valve core 427 also blocks the gas path between the first cavity 4283 and the second cavity 4284, and blocks the gas path between the first gas outlet 423 and the second gas outlet 4282, so as to prevent the gas in the first cavity 4283 from flowing out of the first gas inlet 422 through the second cavity 4284, and prevent air from flowing from the first gas outlet 423 to the second gas outlet 4282 when the sodium lime tank 44 is not installed in place, i.e., the first gas inlet 422 and the first gas outlet 423 are not in communication with the sodium lime tank 44, so that the gas path only circulates in the breathing circuit body 30 and the top cover assembly 42.

[0054] In the locked state, as shown in Figure 8 , the elastic valve core 427 blocks the air path between the first cavity 4283 and the second air outlet 4282, preventing the gas flow in the first cavity 4283 from flowing back to the breathing circuit directly from the second air outlet 4282. The elastic valve core 427 opens the air path between the first cavity 4283 and the second cavity 4284 and opens the air path between the first air outlet 423 and the second air outlet 4282. Thus, the gas flow can enter the first cavity 4283 from the second air inlet 4281, then enter the second cavity 4284 from the first cavity 4283, and flow to the first air inlet 422. Since the sodium lime tank 44 has been installed in place in the locked state, the gas flow can enter the first opening 442 of the sodium lime tank 44 from the first air inlet 422, enter the containing cavity 444 from the first opening 442, and flow into the first air outlet 423 from the second opening 443 of the sodium lime tank 44 after the sodium lime in the containing cavity 444 absorbs carbon dioxide. Then the gas flow flows to the second air outlet 4282 through the first air outlet 423, and finally flows into the breathing circuit.

[0055] In an embodiment, as shown in Figures 2-6 , the lifting assembly 43 comprises a driving member 432 and a supporting member 433. The present application does not limit the driving member 432 to be manually driven or electrically driven. For example, in the embodiment shown in Figures 2-6 , the driving member 432 is a manually driven part.

[0056] The driving member 432 is fixed to the second fixing member 413, and the supporting member 433 is provided with a mounting position 431. The driving member 432 is used to move the supporting member 433 close to or away from the first fixing member 411. As shown in Figure 6 and Figure 9 , one of the second fixing member 413 and the supporting member 433 is provided with a guide channel 4131, and the other is provided with a guide portion 4331. For example, in the embodiments shown in Figure 6 and Figure 9 , the second fixing member 413 is provided with the guide channel 4131, and the supporting member 433 has the guide portion 4331. Part of the guide portion 4331 is arranged in the guide channel 4131. The guide channel 4131 cooperates with the guide portion 4331 to make the supporting member 433 do linear reciprocating motion, so that the sodium lime tank 44 can only move up and down under the action of the lifting assembly 43, preventing the sodium lime tank 44 from shaking during lifting.

[0057] In an embodiment, the lifting assembly 43 further comprises a transmission member 434. The transmission member 434 is fixedly connected with the driving member 432. The driving member 432 can rotate, and the transmission member 434 is used to convert the rotation of the driving member 432 into linear motion of the supporting member 433. For example, in an embodiment, as shown in Figure 9As shown, the driving member 432 is a handle, and the transmission member 434 is a cam. Specifically, the second fixing member 413 is provided with a slot 4132 on one side thereof facing the first fixing member 411, and the slot 4132 is provided with a transversely extending through hole 4133 penetrating the second fixing member 413. One end of the handle penetrates the through hole 4133 to fix the handle on the second fixing member 413, and the handle can rotate relative to the through hole 4133. The cam is arranged in the slot 4132 and is fixedly connected with the handle in the slot 4132. Preferably, the handle penetrates the cam and is fixed relative to the cam. Thus, when the handle rotates, the cam can rotate synchronously with the handle.

[0058] The support member 433 is provided with an abutting portion 4332 on one side thereof facing the second fixing member 413, and the abutting portion 4332 abuts against the cam. Preferably, at least a part of the abutting portion 4332 has a circular arc surface, and the abutting portion 4332 abuts against the cam through the circular arc surface. Of course, the present application does not limit the transmission member 434 to be only a cam. Any transmission member 434 that can convert the rotation of the driving member 432 into the linear motion of the support member 433 is acceptable. In the process of locking the sodium lime tank 44, the handle is rotated to drive the cam to rotate. The distance between the contact point of the cam and the abutting portion 4332 and the rotation axis of the handle gradually increases to drive the support member 433 to rise. When the center axis of the sodium lime tank 44, the contact point of the cam and the abutting portion 4332, and the rotation center point of the cam are located on the same straight line, the sodium lime tank 44 reaches the locked state. In the process of unlocking the sodium lime tank 44, the handle is reversely rotated to drive the cam to reversely rotate. The distance between the contact point of the cam and the abutting portion 4332 and the rotation axis of the handle gradually decreases to drive the support member 433 to descend, so that the sodium lime tank 44 reaches the unlocked state.

[0059] In one embodiment, as Figure 10As shown, the mounting position 431 is provided with a first positioning part 4311, and the sodium lime tank 44 is provided with a second positioning part 445, the first positioning part 4311 cooperates with the second positioning part 445 to make the sodium lime tank 44 and the mounting position 431 have a unique relative position. Since the sodium lime tank 44 has the first opening 442 and the second opening 443, the two openings need to cooperate with the top cover assembly 42 in the locked state, so the two openings need to be accurately moved to the corresponding position, and the loading and unloading process of the sodium lime tank 44 is operated by medical staff, and the loading and unloading process of the sodium lime tank 44 also needs to be simplified to reduce the operation strength of the medical staff. The first positioning part 4311 and the second positioning part 445 can make the sodium lime tank 44 and the mounting position 431 have a unique relative position, so that the sodium lime tank 44 is installed on the mounting position 431 at a unique angle, which ensures that the sodium lime tank 44 can cooperate with the top cover assembly 42, and ensures that the medical staff can quickly place when operating. Among them, the first positioning part 4311 and the second positioning part 445 may, for example, be in the form of a convex and a groove. In addition, the first positioning part 4311 and the second positioning part 445 can also be cooperated in the form of magnetic attraction and the like.

[0060] The above application of specific examples to the present application is described, only to help understand the present application, and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A clamping mechanism for a soda lime container, characterized in that, include: A fixing frame includes a first fixing member, a connecting member, and a second fixing member, wherein the first fixing member and the second fixing member are arranged opposite to each other at a distance, and both ends of the connecting member are respectively connected to the first fixing member and the second fixing member; the fixing frame is used to fix to the breathing circuit body. A top cover assembly, which is fixed to the side of the first fixing member facing the second fixing member, and the end of the top cover assembly facing the second fixing member has a sealing structure; the top cover assembly is used to communicate with the main body of the breathing circuit. A lifting assembly is disposed on the second fixing member, and the lifting assembly has a mounting position on the side facing the first fixing member; And a soda lime container, which is disposed at the mounting position and located between the top cover assembly and the lifting assembly, and has an opening at one end facing the top cover assembly; The lifting assembly is used to drive the mounting position to move so that the soda lime can move closer to or further away from the first fixing member, thereby switching the locking and unlocking states of the soda lime can clamping mechanism; in the locking state, the opening abuts against the sealing structure, and the soda lime can is connected to the breathing circuit body through the top cover assembly; in the unlocking state, the opening is separated from the sealing structure.

2. The soda lime container clamping mechanism according to claim 1, characterized in that, The top cover assembly has a first air inlet and a first air outlet on the side facing the second fixing member. The opening portion surrounds and forms a first opening and a second opening. The soda lime container has a receiving cavity for containing soda lime. The two ends of the receiving cavity are respectively connected to the first opening and the second opening. In the locked state, the first air inlet and the first air outlet are respectively connected to the main body of the breathing circuit. The first air inlet is connected to the first opening, and the first air outlet is connected to the second opening. The sealing structure is used to seal the gap between the first air inlet and the first opening, and to seal the gap between the first air outlet and the second opening. In the unlocked state, the first air inlet and the first air outlet are blocked from the main body of the breathing circuit.

3. The soda lime container clamping mechanism according to claim 2, characterized in that, The top cover assembly includes a filter screen installed at the first air outlet to block soda lime from passing through the first air outlet.

4. The soda lime container clamping mechanism according to claim 2, characterized in that, The top cover assembly includes a housing and a resilient valve core. The housing forms a first air inlet, a first air outlet, a second air inlet, a second air outlet, a first cavity, and a second cavity. The second air inlet and the second air outlet are respectively connected to the main body of the breathing circuit. The first cavity is connected to the second air inlet. The second cavity is connected to the first air inlet. The resilient valve core is disposed within the housing and is capable of moving under the action of the elastic potential energy of the soda lime container and the resilient valve core. In the unlocked state, the elastic valve core opens the air passage between the first cavity and the second air outlet, and blocks the air passage between the first cavity and the second cavity, as well as the air passage between the first air outlet and the second air outlet; in the locked state, the elastic valve core blocks the air passage between the first cavity and the second air outlet, and opens the air passage between the first cavity and the second cavity, as well as the air passage between the first air outlet and the second air outlet.

5. The soda lime container clamping mechanism according to any one of claims 1-4, characterized in that, The lifting assembly includes a drive component and a support component. The drive component is fixed to the second fixing component, and the support component is provided with the mounting position. The drive component is used to move the support component closer to or away from the first fixing component. One of the second fixing component and the support component is provided with a guide channel, and the other is provided with a guide portion. A portion of the guide portion is disposed in the guide channel, and the guide channel and the guide portion cooperate to make the support component perform linear reciprocating motion.

6. The soda lime container clamping mechanism according to claim 5, characterized in that, The lifting assembly also includes a transmission component, which is fixedly connected to the driving component. The transmission component is used to convert the rotation of the driving component into the linear motion of the support component.

7. The soda lime container clamping mechanism according to claim 6, characterized in that, The driving component is a handle, the transmission component is a cam, and the support component has an abutting portion on the side facing the second fixing component, the abutting portion abutting against the cam.

8. The soda lime container clamping mechanism according to any one of claims 1-4, characterized in that, The mounting position is provided with a first positioning part, and the soda lime container is provided with a second positioning part. The first positioning part and the second positioning part cooperate to make the soda lime container and the mounting position have a unique relative position.

9. A breathing circuit device, characterized in that, It includes a breathing circuit body and a soda lime container clamping mechanism as described in any one of claims 1-8, wherein the soda lime container clamping mechanism is fixed to the breathing circuit body.

10. An anesthesia machine, characterized in that, It includes an anesthesia machine body and a breathing circuit device as described in claim 9, wherein the breathing circuit body is mounted on the anesthesia machine body.

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