Locking mechanism and anesthesia machine

Abstract

The utility model provides a locking mechanism and an anaesthesia machine, the locking mechanism comprises a first locking assembly and a second locking assembly, the first locking assembly comprises a locking piece and a first sensor; the locking piece is provided with a first locking structure; in the locking state, the first locking structure can be locked with a second locking structure of the anaesthesia machine in a matched mode, the locking piece is located at the first sensing position, and the first sensor outputs a first sensing signal. In an unlocking state, the first locking structure can be separated from the second locking structure, the locking piece is located at a second sensing position, and the first sensor outputs a second sensing signal; the second locking assembly comprises an elastic interlocking assembly and a second sensor; the elastic interlocking assembly can move from an unlocking position to an interlocking position after being driven; in the interlocking position, the elastic interlocking assembly is located at a third sensing position, and the second sensor outputs a third sensing signal. By means of double locking of the locking mechanism, potential safety hazards caused by mistaken use of the evaporator can be avoided.

Description

Technical Field

[0001] This application relates to the field of anesthesia machine technology, specifically to a locking mechanism and anesthesia machine. Background Technology

[0002] The vaporizer of an anesthesia machine is a specialized device for controlling the output of volatile anesthetic drug vapors. Its basic function is to vaporize the volatile anesthetic drug and control the concentration of anesthetic vapor in the fresh gas. Furthermore, the vaporizer can effectively evaporate the anesthetic liquid and precisely deliver the anesthetic drug into the anesthesia breathing circuit at a specific concentration. Due to the use of potent inhaled anesthetics, the use of the vaporizer involves the safety of the patient.

[0003] If the vaporizer is loose or misaligned on the anesthesia machine, it may cause gas leakage or unstable anesthetic effects, posing a threat to the patient's safety. If the anesthetic solutions in two vaporizers are mistakenly turned on simultaneously during anesthesia machine operation, resulting in different solutions being delivered to the patient's airway, it may lead to excessively high concentrations of anesthetic drugs or adverse effects from interactions between different anesthetic gases, all of which increase the risk to the patient's life. Utility Model Content

[0004] This application provides a locking mechanism and an anesthesia machine that can solve the problem of adverse effects on patient safety caused by the misuse of vaporizers.

[0005] To address the aforementioned technical problems, this application provides a locking mechanism applied to the vaporizer of an anesthesia machine. The locking mechanism includes a first locking component and a second locking component. The first locking component includes a locking member and a first sensor. The locking member has a first locking structure. Movement of the locking member can switch between a locked state and an unlocked state. In the locked state, the first locking structure engages with a second locking structure of the anesthesia machine, the locking member is located in a first sensing position, and the first sensor outputs a first sensing signal. In the unlocked state, the first locking structure separates from the second locking structure, the locking member is located in a second sensing position, and the first sensor outputs a second sensing signal. The second locking component includes an elastic interlock component and a second sensor. The elastic interlock component, when subjected to a driving force, can move from the unlocked position to the interlocked position. The elastic restoring force of the elastic interlock component can reset the elastic interlock component from the interlocked position to the unlocked position. In the interlocked position, the elastic interlock component limits the movement of adjacent vaporizer elastic interlock components, the elastic interlock component is located in a third sensing position, and the second sensor outputs a third sensing signal. In the unlocked position, the elastic interlock component is located in a fourth sensing position, and the second sensor outputs a fourth sensing signal.

[0006] In one embodiment, the locking member includes a locking rod and a sensing part. A first locking structure is provided at one end of the locking rod along the axial direction of the locking rod. The sensing part is disposed on the outer surface of the locking rod and has a solid part and a clearance part. When the locking member is in the first sensing position, one of the solid part and the clearance part triggers the first sensor to output a first sensing signal. When the locking member is in the second sensing position, the other of the solid part and the clearance part triggers the first sensor to output a second sensing signal.

[0007] In one embodiment, rotation of the locking bar can switch between the locked and unlocked states of the locking member, with the solid part and the clearance part distributed sequentially along the circumference of the locking bar.

[0008] In one embodiment, the first locking structure is a spiral locking groove, and the second locking structure is a double torsion spring. In the locked state, the double torsion spring spirally screws into the locking groove, and the double torsion spring is twisted and deformed to generate elastic potential energy. In the unlocked state, the double torsion spring screws out of the locking groove, and the double torsion spring resets under the action of its elastic potential energy.

[0009] And / or, the locking element also includes a handle disposed at the end of the locking lever away from the first locking structure.

[0010] In one embodiment, the locking member further includes a locking rod torsion spring, which is sleeved on the locking rod. In the locked state, the rotation of the locking rod causes the locking rod torsion spring to twist and deform, generating elastic potential energy. In the unlocked state, the locking rod torsion spring can drive the locking rod to reset under the action of its elastic potential energy.

[0011] In one embodiment, the second locking component further includes an electric component, which includes a power member. When the electric component is energized, the power member can move. The power member can drive the elastic interlock component to move between the unlocked position and the interlocked position.

[0012] And / or, the resilient interlock assembly has a protrusion and a clearance position; when the resilient interlock assembly is in the third sensing position, one of the protrusion and the clearance position triggers the second sensor to output a third sensing signal; when the resilient interlock assembly is in the fourth sensing position, the other of the protrusion and the clearance position triggers the second sensor to output a fourth sensing signal.

[0013] In one embodiment, the electric component further includes an electromagnet and an elastic element. The elastic interlock component includes an elastic interlock pin and a stop member. One end of the elastic element is used to abut against the stop member. The stop member is fixedly connected to the power component. When the electromagnet is energized, it can generate a magnetic field. The magnetic force of the magnetic field is used to attract or repel the power component. When the magnetic force of the magnetic field is greater than the elastic force of the elastic element, the power component drives the stop member to move along a first direction, so that the elastic interlock pin moves from the unlocked position to the interlocked position. When the magnetic force is less than or equal to the elastic force of the elastic element, or when the electromagnet is de-energized, the power component drives the stop member to move in the opposite direction of the first direction, so that the elastic interlock pin moves from the interlocked position to the unlocked position.

[0014] In one embodiment, the resilient interlocking pin is capable of reciprocating along a second direction or the opposite direction of the second direction, with the first direction perpendicular to the second direction; the end of the abutment member near the resilient interlocking pin has a ramp, the side of the ramp facing the resilient interlocking pin is an inclined surface, the height of the inclined surface decreases along the first direction, the direction of the elastic restoring force of the resilient interlocking pin is along the second direction, and the resilient interlocking pin remains abutting the inclined surface under the action of the elastic restoring force of the resilient interlocking pin.

[0015] In one embodiment, the first sensor and the second sensor are one of a photoelectric sensor, an infrared sensor, and a proximity sensor.

[0016] To solve the above-mentioned technical problems, this application provides an anesthesia machine, which includes a vaporizer and a locking mechanism. The number of vaporizers is two, and the locking mechanism is installed on the vaporizer. The elastic interlocking components of the two vaporizers are arranged opposite to each other. When the elastic interlocking component of one of the two vaporizers is in the interlocked position, the elastic interlocking component in the interlocked position can limit the elastic interlocking component of the other vaporizer, so that the other vaporizer cannot work.

[0017] This application provides a locking mechanism, which includes a first locking component and a second locking component. The first locking component includes a locking member and a first sensor. The locking member has a first locking structure. Movement of the locking member can switch between a locked state and an unlocked state. In the locked state, the first locking structure can cooperate with the second locking structure of the anesthesia machine to lock, the locking member is located in a first sensing position, and the first sensor outputs a first sensing signal. In the unlocked state, the first locking structure can separate from the second locking structure, the locking member is located in a second sensing position, and the first sensor outputs a second sensing signal. The second locking component includes an elastic interlock component and a second sensor. The elastic interlock component can move from the unlocked position to the interlocked position after being driven by a driving force. In the interlocked position, the elastic interlock component is used to limit the elastic interlock components of adjacent vaporizers, the elastic interlock component is located in a third sensing position, and the second sensor outputs a third sensing signal. In the unlocked position, the elastic interlock component is located in a fourth sensing position, and the second sensor outputs a fourth sensing signal. The locking mechanism of this application includes a first locking component and a second locking component. When locked, the first locking component can cooperate with the anesthesia machine to lock tightly, thus preventing the vaporizer from loosening or becoming misaligned on the anesthesia machine. The second locking component can have an interlock position. In the interlock position, the elastic interlock component can limit the elastic interlock component of the adjacent vaporizer, preventing the adjacent vaporizer from working. The dual locking can solve the safety hazards caused by the incorrect use of the vaporizer. Furthermore, this application also equips both locking components with sensors to provide feedback on the locking status of the two locking components, further ensuring the correct use of the vaporizer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an anesthesia machine provided in one embodiment of this application;

[0019] Figure 2 for Figure 1 Top view;

[0020] Figure 3 A schematic diagram of the locking mechanism and the second locking structure provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the locking mechanism provided in one embodiment of the present application when it is in a double-locked state;

[0022] Figure 5 This is a schematic diagram of the locking mechanism provided in one embodiment of the present application when it is in a double unlocking state;

[0023] Figure 6 This is an exploded view of the second locking component provided in an embodiment of this application.

[0024] Figure description: Evaporator 10, locking mechanism 20, first locking assembly 21, locking member 211, first locking structure 2111, locking rod 2112, handle 2113, sensing part 2114, solid part 2115, clearance part 2116, locking rod torsion spring 2117, first sensor 212, second locking assembly 22, elastic interlock assembly 221, protrusion 2211, clearance position 2212, elastic interlock pin 2213, abutment member 2214, ramp 2215, second sensor 222, valve block body 23, electric assembly 24, power member 25, electromagnet 26, elastic member 27, second locking structure 30. Detailed Implementation

[0025] The present application will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0026] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0027] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0028] The terms "parallel" and "perpendicular," etc., are specific to the current technological level, not absolute mathematical definitions. Slight deviations are permissible; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, with the angle between A and B ranging from 0° to 10°. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, with the angle between A and B ranging from 80° to 100°. The directional terms used in the embodiments of this application, such as "upper," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0029] Please refer to Figure 1 and Figure 2 This application provides an anesthesia machine, which includes a vaporizer 10 and a locking mechanism 20. The locking mechanism 20 may have the same or similar structure as the locking mechanism 20 in any of the embodiments described below, and perform the same or similar functions. There are two vaporizers 10, and the locking mechanism 20 is installed on each vaporizer 10, that is, each vaporizer 10 is equipped with a set of locking mechanisms 20.

[0030] like Figure 3 As shown, this application provides a locking mechanism 20, which is applied to the vaporizer 10 of an anesthesia machine. The locking mechanism 20 includes a first locking component 21 and a second locking component 22.

[0031] In one embodiment, the locking mechanism 20 further includes a valve block body 23, on which a first locking component 21 and a second locking component 22 are mounted. The valve block body 23 can be fixed to the vaporizer 10 of the anesthesia machine. By using the valve block body 23 to mount the first locking component 21 and the second locking component 22, the locking mechanism 20 can be made more modular, and the valve block body 23 can protect the first locking component 21 and the second locking component 22, preventing each locking component from being damaged.

[0032] Specifically, such as Figure 3-5 As shown, the first locking component 21 includes a locking member 211 and a first sensor 212. The locking member 211 has a locked state and an unlocked state, and the movement of the locking member 211 can switch between the locked state and the unlocked state. Specifically, when the locking member 211 is driven by human or electric force, the locking member 211 can move from the unlocked state to the locked state.

[0033] Specifically, the locking member 211 has a first locking structure 2111, and the anesthesia machine is provided with a second locking structure 30. A first sensor 212 is located near the locking member 211. In the locked state, the first locking structure 2111 can be moved to a position that engages with the second locking structure 30 of the anesthesia machine to lock the vaporizer 10 onto the anesthesia machine, preventing user misoperation, such as preventing the replacement or removal of the vaporizer 10 if the anesthesia machine is not properly configured or safety conditions are not met. In the locked state, the locking member 211 is located in a first sensing position relative to the first sensor 212, causing the first sensor 212 to output a first sensing signal. In the unlocked state, the first locking structure 2111 can be moved to a position separate from the second locking structure 30, allowing the vaporizer 10 to be replaced or removed from the anesthesia machine. In the unlocked state, the locking member 211 is located in a second sensing position relative to the first sensor 212, causing the first sensor 212 to output a second sensing signal. Therefore, the first sensor 212 can provide feedback on whether the locking element 211 is locked or unlocked.

[0034] like Figure 3-6 As shown, the second locking component 22 includes a resilient interlock component 221 and a second sensor 222. The resilient interlock component 221 is movable between an unlocked position and an interlocked position. When subjected to a human or electric driving force, the resilient interlock component 221 can move from the unlocked position to the interlocked position. The resilient interlock component 221 in the interlocked position has an elastic restoring force, which allows it to reset from the interlocked position to the unlocked position after the driving force is removed. Figure 2 As shown, the elastic interlocking assemblies 221 of the two vaporizers 10 of the anesthesia machine are arranged opposite each other. Preferably, the elastic interlocking assemblies 221 of the two vaporizers 10 are arranged opposite each other along a straight line. In the interlocked position, the elastic interlocking assembly 221 of the vaporizer 10 in the interlocked position can limit the elastic interlocking assembly 221 of the adjacent vaporizer 10, so that the adjacent vaporizer 10 cannot work.

[0035] Specifically, the interlocked position is closer to the other evaporator 10 than the unlocked position; that is, the elastic interlock component 221 in the interlocked position extends further out of the evaporator 10 than the elastic interlock component 221 in the unlocked position. For example, Figure 2 As shown, a resilient interlocking component 221 in one interlocking position can occupy the interlocking position of the resilient interlocking component 221 of another evaporator 10, preventing the resilient interlocking component 221 of the other evaporator 10 from reaching the interlocking position, or a resilient interlocking component 221 in one interlocking position can abut against the resilient interlocking component 221 of another evaporator 10, preventing the resilient interlocking component 221 of the other evaporator 10 from moving. For example, in Figure 2In this embodiment, the elastic interlock assembly 221 of the right evaporator 10 extends, and the right evaporator 10 is in the working state. The left evaporator 10 is limited by the elastic interlock assembly 221 of the right evaporator 10 and cannot extend, so the left evaporator 10 is in the stopped working state. The elastic interlock assembly 221 in the unlocked position can release the elastic interlock assembly 221 of the adjacent evaporator 10.

[0036] When the elastic interlock assembly 221 of one of the two vaporizers 10 is in the interlocked position, the elastic interlock assembly 221 of the other vaporizer 10 cannot extend to the interlocked position. Therefore, the anesthetic solution in only one vaporizer 10 can be used during the operation of the anesthesia machine, preventing accidental delivery of the anesthetic solution in both vaporizers 10 to the patient's airway at the same time.

[0037] The second sensor 222 is positioned near the elastic interlock assembly 221. When the elastic interlock assembly 221 is in the interlocked position, it is located at a third sensing position relative to the second sensor 222, triggering the second sensor 222 to output a third sensing signal. When the elastic interlock assembly 221 is in the unlocked position, it is located at a fourth sensing position relative to the second sensor 222, and the second sensor 222 outputs a fourth sensing signal. Thus, the second sensor 222 can provide feedback on whether the elastic interlock assembly 221 is in the interlocked or unlocked position.

[0038] The locking mechanism 20 of this application includes a first locking component 21 and a second locking component 22. When locked, the first locking component 21 engages with the anesthesia machine to prevent the vaporizer 10 from loosening or becoming misaligned. The second locking component 22 can have an interlocked position. In this position, the elastic interlock component 221 can limit the elastic interlock components 221 of adjacent vaporizers 10, preventing them from operating. This dual locking mechanism of the first and second locking components 21 addresses safety hazards caused by misuse of the vaporizer 10. Both locking conditions are indispensable. Furthermore, this application includes sensors on both locking components to provide feedback on their locking status, further ensuring the correct use of the vaporizer 10 and guaranteeing that it is correctly and securely locked, preventing safety hazards caused by misoperation.

[0039] Please refer to Figure 3-5 In one embodiment, the locking member 211 includes a locking rod 2112. The locking rod 2112 is generally elongated cylindrical. A first locking structure 2111 is provided at one end of the locking rod 2112 along its axial direction. Specifically, rotation of the locking rod 2112 can switch the locking state and unlocking state of the locking member 211. The first locking structure 2111 can be a helical locking groove, and the second locking structure 30 is a double torsion spring.

[0040] In the locked state, rotating the locking lever 2112 causes the spiral locking groove to rotate, allowing the double torsion spring fixed to the anesthesia machine to spirally screw into the locking groove. The double torsion spring, under the action of the locking groove, twists and deforms, generating elastic potential energy. In the unlocked state, rotating the locking lever 2112 in the opposite direction causes the locking groove to rotate in the opposite direction, causing the double torsion spring to unscrew from the locking groove. The double torsion spring then returns to its initial state under the action of its elastic potential energy. Through the cooperation of the locking groove and the double torsion spring, the vaporizer 10 and the anesthesia machine can be securely locked, and the double torsion spring can automatically return to its original position based on the elastic potential energy generated by its deformation, facilitating its next engagement with the locking groove. In other embodiments, the locking lever 2112 can also switch between the locked and unlocked states of the locking member 211 by translation, and the first locking structure 2111 and the second locking structure 30 are not limited to the structures described above.

[0041] In one embodiment, the locking member 211 further includes a handle 2113, which is disposed at the end of the locking lever 2112 away from the first locking structure 2111. The user can rotate the handle 2113 to cause the locking lever 2112 to rotate synchronously, thereby switching the locked and unlocked states of the locking member 211. In other embodiments, the locking lever 2112 can be rotated electrically, for example, by the user pressing a button or touching an operation panel to control the rotation of the locking lever 2112 via an electronic control device. Of course, in other embodiments, the user or the electronic control device can also control the locking lever 2112 to translate and switch the locked and unlocked states of the locking member 211.

[0042] In one embodiment, the locking member 211 further includes a sensing portion 2114. The sensing portion 2114 is disposed on the outer surface of the locking bar 2112, and has a solid portion 2115 and a clearance portion 2116. The first sensor 212 can sense the approach of different portions of the sensing portion 2114 to emit different sensing signals to provide feedback on the state of the locking member 211. For example, when the locking bar 2112 moves, the solid portion 2115 or the clearance portion 2116 can approach the first sensor 212, causing either the solid portion 2115 or the clearance portion 2116 to trigger the first sensor 212. Specifically, in the locked state, when the locking member 211 is in the first sensing position, one of the solid portion 2115 and the clearance portion 2116 triggers the first sensor 212 to output a first sensing signal; in the unlocked state, when the locking member 211 is in the second sensing position, the other of the solid portion 2115 and the clearance portion 2116 triggers the first sensor 212 to output a second sensing signal. Therefore, when the locking member 211 is in the locked state and the unlocked state, the first sensor 212 can feed back different sensing signals, so that the controller can issue commands in response to the different sensing signals, ensuring that the user can only perform certain operations when the locking member 211 is locked or unlocked.

[0043] In one embodiment, the first sensor 212 is one of a photoelectric sensor, an infrared sensor, and a proximity sensor. For example, the first sensor 212 is a photoelectric sensor, such as... Figure 4 As shown, when the physical part 2115 blocks the photoelectric sensor, the locking member 211 is located in the first sensing position, as... Figure 5 As shown, when the clearance portion 2116 moves to the photoelectric sensor, the locking member 211 does not obstruct the photoelectric sensor, and the locking member 211 is located in the second sensing position. Alternatively, in other embodiments, when the solid portion 2115 obstructs the photoelectric sensor, the locking member 211 is located in the second sensing position; when the clearance portion 2116 moves to the photoelectric sensor, the locking member 211 does not obstruct the photoelectric sensor, and the locking member 211 is located in the first sensing position. In other embodiments, the first sensor 212 can also be a Hall sensor. The Hall sensor can sense the magnetic field emitted by the magnet provided on the sensing part 2114. The sensing part 2114 moves to make the magnetic field strength sensed by the Hall sensor different. The Hall sensor emits different sensing signals according to the different magnetic field strengths. For example, it can emit a first sensing signal when the magnetic field strength is greater than a certain set value, and emit a second sensing signal when the magnetic field strength is less than or equal to a certain set value.

[0044] In one embodiment, the solid portion 2115 and the clearance portion 2116 are sequentially distributed along the circumference of the locking rod 2112, so that when the locking rod 2112 rotates, either the solid portion 2115 or the clearance portion 2116 can be switched to approach the first sensor 212 to trigger the first sensor 212. In one embodiment, the solid portion 2115 may be generally arc-shaped, and the clearance portion 2116 may be a hole-like structure or a through-groove structure.

[0045] In one embodiment, the locking member 211 further includes a locking rod torsion spring 2117, which is sleeved on the locking rod 2112. In the locked state, the rotation of the locking rod 2112 causes the locking rod torsion spring 2117 to twist and deform, generating elastic potential energy. In the unlocked state, the locking rod torsion spring 2117 can drive the locking rod 2112 to reset under the action of its elastic potential energy. By setting the locking rod torsion spring 2117, it can be ensured that in the unlocked state, the locking rod 2112 can be fully reset to a position that can trigger the first sensor 212, preventing the first sensor 212 from not being triggered because the sensing part 2114 is not reset in place.

[0046] like Figure 4-6As shown, in one embodiment, the second locking component 22 further includes an electric component 24, which includes a power element 25. When energized, the electric component 24 enables the power element 25 to move. The power element 25 can drive the elastic interlock component 221 to move between the unlocked position and the interlocked position. By controlling the interlock of the second locking component 22 through the power element 25, the power element 25 can have a high response speed under the action of electricity, providing a better user experience. Furthermore, the control precision of the power element 25 is higher through electric control, reducing the likelihood of errors. In other embodiments, the elastic interlock component 221 can also be moved between the unlocked and interlocked positions manually.

[0047] The second sensor 222 can sense that the elastic interlock component 221 is in different sensing positions relative to the second sensor 222, and emit different sensing signals to provide feedback on the state of the elastic interlock component 221. Specifically, in one embodiment, the elastic interlock component 221 has a protrusion 2211 and a clearance position 2212. When the elastic interlock component 221 is in the interlocked position, it is in a third sensing position relative to the second sensor 222, and one of the protrusion 2211 and the clearance position 2212 approaches the second sensor 222 and triggers the second sensor 222 to output a third sensing signal. When the elastic interlock component 221 is in the unlocked position, it is in a fourth sensing position relative to the second sensor 222, and the other of the protrusion 2211 and the clearance position 2212 approaches the second sensor 222 and triggers the second sensor 222 to output a fourth sensing signal. Therefore, the flexible interlock component 221 can provide different sensing signals when it is in the interlocked position and the unlocked position, so that the controller can issue commands in response to the different sensing signals, ensuring that the user can only perform certain operations when the flexible interlock component 221 is interlocked or unlocked.

[0048] Similarly, the type of the second sensor 222 can be the same as or similar to that of the first sensor 212. Preferably, the second sensor 222 is a photoelectric sensor, such as... Figure 4 As shown, when the protrusion 2211 blocks the photoelectric sensor, the elastic interlock assembly 221 is located in the third sensing position; as Figure 5 As shown, when the clearance position 2212 moves to the photoelectric sensor, the elastic interlock assembly 221 does not obstruct the photoelectric sensor, and the elastic interlock assembly 221 is located in the fourth sensing position. Alternatively, when the protrusion 2211 obstructs the photoelectric sensor, the elastic interlock assembly 221 is located in the fourth sensing position; when the clearance position 2212 moves to the photoelectric sensor, the elastic interlock assembly 221 does not obstruct the photoelectric sensor, and the elastic interlock assembly 221 is located in the third sensing position.

[0049] In one embodiment, the electric component 24 further includes an electromagnet 26 and an elastic element 27. The elastic interlock component 221 includes an elastic interlock pin 2213 and an abutment 2214. One end of the elastic element 27 is used to abut the abutment 2214. The abutment 2214 is fixedly connected to the power component 25. The power component 25 and the abutment 2214 move synchronously so that the movement direction of the abutment 2214 is consistent with the movement direction of the power component 25. For example, when the power component 25 moves along the first direction, the abutment 2214 also moves along the first direction. When the power component 25 moves in the opposite direction of the first direction, the abutment 2214 also moves synchronously in the opposite direction of the first direction.

[0050] When energized, electromagnet 26 generates a magnetic field, which attracts or repels the power component 25. When the power component 25 moves under the influence of the magnetic field, the elastic component 27 generates a spring force in the opposite direction to the magnetic field. When the magnetic field force is greater than the spring force of the elastic component 27, the power component 25 moves along a first direction, causing the abutment 2214 to move along the first direction as well, thus moving the elastic interlocking pin 2213 from the unlocked position to the interlocked position. The first direction can be towards or away from electromagnet 26. The first direction is related to whether the magnetic field attracts or repels the power component 25; when the magnetic field attracts the power component 25, the first direction is towards electromagnet 26; when the magnetic field repels the power component 25, the first direction is away from electromagnet 26.

[0051] When the magnetic field force is less than or equal to the elastic force of the elastic element 27, or when the electromagnet 26 is de-energized, the power element 25 moves in the opposite direction of the first direction under the action of the elastic element 27, thereby driving the abutment element 2214 to move in the opposite direction of the first direction, so that the elastic interlocking pin 2213 moves from the interlocked position to the unlocked position. The elastic element 27 can be a spring, a sheet, etc. When the power element 25 moves under the action of the magnetic field force, the spring can be compressed to generate an elastic force. By setting the elastic element 27, the power element 25 can be automatically reset when the electromagnet 26 is de-energized.

[0052] In one embodiment, the elastic interlocking pin 2213 can reciprocate along a second direction or the opposite direction of the second direction, with the first direction perpendicular to the second direction. The movement of the abutment member 2214 can convert movement along the direction of the magnetic force into movement perpendicular to the magnetic force, facilitating the arrangement of the evaporator 10 during installation.

[0053] Specifically, the end of the abutment 2214 near the elastic interlocking pin 2213 has a ramp 2215. The side of the ramp 2215 facing the elastic interlocking pin 2213 is an inclined surface. The height of the inclined surface decreases along the first direction, and the direction of the elastic restoring force of the elastic interlocking pin 2213 is along the second direction. Under the action of the elastic restoring force, the elastic interlocking pin 2213 remains abutting the inclined surface. Thus, when the abutment 2214 moves along the first direction, the ramp 2215 also moves along the first direction. Since the height of the inclined surface along the first direction decreases, the ramp 2215 pushes the elastic interlocking pin 2213 to slide along the inclined surface towards the position where the height of the ramp 2215 decreases, so that the elastic interlocking pin 2213 is pushed out, thereby moving the elastic interlocking pin 2213 from the unlocked position to the interlocked position. When the abutment 2214 moves in the opposite direction of the first direction, the ramp 2215 also moves in the opposite direction of the first direction. As the height of the ramp increases in the opposite direction of the first direction, the elastic interlocking pin 2213 moves toward the ramp under the action of the elastic restoring force of the elastic interlocking pin 2213, so that the elastic interlocking pin 2213 is reset.

[0054] The protrusion 2211 and the clearance 2212 are provided on the abutment 2214. The second sensor 222 is located close to the abutment 2214. The third and fourth sensing positions correspond to the different positions of the abutment 2214 relative to the second sensor 222. The interlocking and unlocking positions correspond to the different positions of the elastic interlocking pin 2213.

[0055] Specifically, the anesthesia machine is also equipped with a controller, and the first sensor 212 and the second sensor 222 can be electrically connected to the controller. When the first locking component 21 is in the locked state, the first sensor 212 outputs a first sensing signal. When the second locking component 22 is in the interlocked position, the second sensor 222 outputs a third sensing signal. The controller can respond to the first and second sensing signals and then issue an operation signal, allowing the user to perform an initialization operation. That is, the prerequisite for initialization is that both sensors must issue the first and third sensing signals respectively, i.e., confirming that both locking components are locked before allowing the user to perform an initialization operation. This prevents the vaporizer 10 from being used when either locking component is not locked. It should be noted that the controller can sense the first sensing signal first, then the third sensing signal, and then issue the operation signal, or sense the third sensing signal first, then the first sensing signal, and then issue the operation signal.

[0056] For example, when the operator twists the handle 2113, the handle 2113 drives the locking rod 2112 to rotate, the first locking structure 2111 locks with the second locking structure 30, the solid part 2115 is located at the first sensor 212, that is, the locking part 211 blocks the first sensor 212, and the first sensor 212 outputs the first sensing signal; when the operator initializes the operation through the operation panel button, the controller sends a power signal to energize the power component 25. After the power component 25 is energized, the elastic interlock component 221 moves to the interlock position, and the protrusion 2211 moves relative to the second sensor 222 to the third sensing position. The second sensor 222 outputs the third sensing signal. The controller responds to the first sensing signal and the third sensing signal, confirms that the two locking conditions of the evaporator 10 are met, and then sends an operation signal, and the user can perform the initialization operation.

[0057] When the first locking component 21 is in the unlocked state, the first sensor 212 outputs a second sensing signal. When the second locking component 22 is in the unlocked position, the second sensor 222 outputs a fourth sensing signal, thus achieving dual unlocking. The user can press the standby button on the control panel, which will de-energize the power component 25. After de-energizing, the elastic interlock pin 2213 will be in the unlocked position, and the clearance position 2212 of the abutment component 2214 will be in the fourth sensing position. The second sensor 222 will output a fourth sensing signal, thus confirming that the elastic interlock pin 2213 is unlocked. The user can rotate the handle 2113 in the opposite direction, causing the locking rod 2112 to rotate in the opposite direction. This separates the first locking structure 2111 from the second locking structure 30, and the clearance portion 2116 is located at the first sensor 212, meaning the locking component 211 does not obstruct the first sensor 212. The first sensor 212 will output a second sensing signal, and the controller will confirm that the locking component 211 is unlocked. The controller responds to the second and fourth sensing signals, confirming that the two unlocking conditions of the evaporator 10 are met.

[0058] In other embodiments, a dual unlocking state can also be achieved by forcibly unlocking the locking component 211. When the evaporator 10 is working, the operator can directly unlock the first locking component 21 by rotating the handle 2113 in the opposite direction. The controller can sense the second sensing signal and control the power component 25 to cut off the power, thereby unlocking the second locking component 22. This dual unlocking method can quickly achieve the purpose of unlocking at the same time.

[0059] The controller can also confirm whether there is an abnormality based on the current operating status (standby state or initialization state) and the feedback from the first sensor 212 and the second sensor 222. When an abnormality occurs, the controller can control the alarm to sound or display an alarm on the panel, or lock the current operation to prevent further misoperation by the operator, thereby effectively preventing medical accidents.

[0060] The above examples illustrate this application only to aid in understanding the invention and are not intended to limit the scope of the application. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the concept of this application.

Claims

1. A locking mechanism for an evaporator of an anaesthesia machine, characterized in that The application relates to a locking device for an anesthetic machine, which comprises a first locking assembly and a second locking assembly. The first locking assembly comprises a locking piece and a first sensor; the locking piece is provided with a first locking structure; the movement of the locking piece can switch the locking state and the unlocking state of the locking piece; in the locking state, the first locking structure can be locked with a second locking structure of the anesthetic machine; the locking piece is located at a first sensing position; the first sensor outputs a first sensing signal; in the unlocking state, the first locking structure can be separated from the second locking structure; the locking piece is located at a second sensing position; the first sensor outputs a second sensing signal; the second locking assembly comprises an elastic interlocking assembly and a second sensor; the elastic interlocking assembly can be driven to move from an unlocking position to an interlocking position; the elastic restoring force of the elastic interlocking assembly can drive the elastic interlocking assembly to return from the interlocking position to the unlocking position; in the interlocking position, the elastic interlocking assembly is used for limiting the elastic interlocking assembly of an adjacent evaporator; the elastic interlocking assembly is located at a third sensing position; the second sensor outputs a third sensing signal; in the unlocking position, the elastic interlocking assembly is located at a fourth sensing position; the second sensor outputs a fourth sensing signal. The locking piece comprises a locking rod and a sensing part; the locking rod is provided with the first locking structure at one end along the axial direction of the locking rod; the sensing part is arranged on the outer surface of the locking rod; the sensing part is provided with a solid part and a void part; when the locking piece is located at the first sensing position, one of the solid part and the void part triggers the first sensor to output the first sensing signal; when the locking piece is located at the second sensing position, the other of the solid part and the void part triggers the first sensor to output the second sensing signal. The rotation of the locking rod can switch the locking state and the unlocking state of the locking piece; the solid part and the void part are sequentially arranged along the circumferential direction of the locking rod. The first locking structure is a spiral locking groove; the second locking structure is a double torsion spring; in the locking state, the double torsion spring is spirally wound into the locking groove; the double torsion spring is deformed to generate elastic potential energy; in the unlocking state, the double torsion spring is spirally wound out of the locking groove; the double torsion spring is reset under the action of the elastic potential energy; The locking piece further comprises a handle; the handle is arranged at the end of the locking rod away from the first locking structure.

2. The locking mechanism of claim 1, wherein, The locking piece further comprises a locking rod torsion spring; the locking rod torsion spring is sleeved on the locking rod; in the locking state, the rotation of the locking rod drives the locking rod torsion spring to be deformed to generate elastic potential energy; in the unlocking state, the locking rod torsion spring can drive the locking rod to be reset under the action of the elastic potential energy.

3. The locking mechanism of claim 2, wherein, The second locking assembly further comprises an electric assembly; the electric assembly comprises a power piece; the electric assembly can drive the power piece to move after being electrified; the power piece can drive the elastic interlocking assembly to move between the unlocking position and the interlocking position.

4. The locking mechanism of claim 3, wherein, ​ ​ 5. The locking mechanism of claim 3, wherein, ​ 6. The locking mechanism of claim 1, wherein, ​ And / or, the elastic interlocking assembly has a protrusion and a clearance; when the elastic interlocking assembly is located at the third sensing position, one of the protrusion and the clearance triggers the second sensor to output the third sensing signal; when the elastic interlocking assembly is located at the fourth sensing position, the other of the protrusion and the clearance triggers the second sensor to output the fourth sensing signal.

7. The locking mechanism of claim 6, wherein, The electric component further comprises an electromagnet and an elastic member, the elastic interlocking assembly comprises an elastic interlocking pin and an abutting member, one end of the elastic member is used for abutting against the abutting member, the abutting member is fixedly connected with the power member, the electromagnet can generate a magnetic field after being energized, and a magnetic field force of the magnetic field is used for attracting or repelling the power member; when the magnetic field force of the magnetic field is greater than the elastic force of the elastic member, the power member drives the abutting member to move in a first direction, so that the elastic interlocking pin moves from the unlocking position to the interlocking position; when the magnetic field force is less than or equal to the elastic force of the elastic member, or when the electromagnet is de-energized, the power member drives the abutting member to move in the opposite direction of the first direction, so that the elastic interlocking pin moves from the interlocking position to the unlocking position.

8. The locking mechanism of claim 7, wherein, The elastic interlocking pin can reciprocate in a second direction or the opposite direction of the second direction, and the first direction is perpendicular to the second direction; An end of the abutting member close to the elastic interlocking pin has a slope, one side of the slope towards the elastic interlocking pin is a slope surface, the slope height of the slope surface decreases along the first direction, the direction of the elastic recovery force of the elastic interlocking pin is along the second direction, and the elastic interlocking pin keeps abutting against the slope surface under the action of the elastic recovery force of the elastic interlocking pin.

9. The locking mechanism according to any one of claims 1-8, characterized in that, The first sensor and the second sensor are one of a photoelectric sensor, an infrared sensor and a proximity sensor.

10. An anaesthesia machine characterised in that, The locking mechanism comprises two evaporators, the locking mechanism is installed on the evaporators, and the elastic interlocking assemblies of the two evaporators are oppositely arranged; when the elastic interlocking assembly of one of the two evaporators is located at the interlocking position, the elastic interlocking assembly at the interlocking position can limit the elastic interlocking assembly of the other evaporator, so that the other evaporator cannot work.

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