Manual machine control switching device and anesthesia machine

Abstract

The present application belongs to the field of medical equipment, and provides a manual-machine control switching device for an anesthesia machine, which comprises: a mounting seat arranged on a rack of the anesthesia machine; a lever mechanism arranged on the mounting seat, the lever mechanism being rotatable relative to the mounting seat between a first rotation position and a second rotation position to trigger control of the anesthesia machine to switch between a manual state and a machine control state; a swing lever assembly rotatably connected between the lever mechanism and the anesthesia machine, the lever mechanism and the swing lever assembly being synchronously rotatable; when the lever mechanism is located at an intermediate position between the first rotation position and the second rotation position, between the first rotation position and the intermediate position, and between the second rotation position and the intermediate position, respectively, the swing lever assembly drives the lever mechanism to rotate to the first rotation position or the second rotation position, to the first rotation position, and to the second rotation position, respectively. The present application also provides an anesthesia machine. The anesthesia machine of the present application is only in the manual state or the machine control state and does not appear in the intermediate state.

Description

Technical Field

[0001] This invention belongs to the field of medical equipment technology, and particularly relates to a manual / mechanical control switching device and an anesthesia machine. Background Technology

[0002] The manual / mechanical control selector switch is an important component of the anesthesia machine, used to control the switching between manual and mechanical control ventilation modes (i.e., switching the fresh gas in the anesthesia machine).

[0003] Manual control refers to the doctor administering anesthesia by manually controlling the anesthesia machine. The doctor needs to precisely adjust the anesthetic dosage and ventilator parameters according to the patient's condition, making it suitable for high-risk patients and other special circumstances. In manual control, the doctor can adjust the machine based on the patient's vital signs and other indicators, improving the precision of anesthesia and facilitating patient recovery and a smooth surgical procedure.

[0004] Machine-controlled anesthesia involves automatically controlling the anesthetic agent according to a preset anesthesia protocol, suitable for most surgical procedures. In machine-controlled mode, the anesthesia machine automatically controls the inhaled anesthetic dose and the ventilation rate of the ventilator according to the preset anesthesia protocol, thereby ensuring that the patient achieves an appropriate level of anesthesia and good respiratory parameters during the operation.

[0005] During anesthesia and surgery, anesthesiologists need to switch between manual and mechanical ventilation in different scenarios, ensuring the safety and reliability of the switching. However, most manual / mechanical selector switches currently available cannot achieve true bistable operation; that is, there is an intermediate point during the switching process. This intermediate point causes the manual / mechanical selector switch to stop in an intermediate state between manual and mechanical modes, leading to cross-ventilation between the manual and mechanical mode branches. This undoubtedly increases the risks during use. Summary of the Invention

[0006] This invention provides a manual / mechanical control switching device, which aims to solve the technical problem of cross-contamination caused by the intermediate point in the switching process of existing manual / mechanical control selector switches, which stops at the intermediate state between manual and mechanical control states.

[0007] The manual / mechanical control switching device of this invention, used in an anesthesia machine, includes:

[0008] Mounting base, which is mounted on the frame of the anesthesia machine;

[0009] A lever mechanism mounted on the mounting base is rotatable relative to the mounting base between a first rotational position and a second rotational position to trigger the switching of the anesthesia machine between manual and machine-controlled modes; and

[0010] a swing lever assembly having one end rotatably connected with the dial lever mechanism and the other end rotatably connected with the rack of the anesthetizer;

[0011] wherein, when the dial lever mechanism is located at an intermediate position between the first and second rotation positions, the first rotation position and the intermediate position, and the second rotation position and the intermediate position respectively, the swing lever assembly drives the dial lever mechanism to rotate towards the first rotation position or the second rotation position, the first rotation position, and the second rotation position respectively.

[0012] Further, the swing lever assembly comprises:

[0013] a swing lever comprising a first end and a second end connected with the first end;

[0014] a first elastic element sleeved on the swing lever, one end of the first elastic element abutting against the first end;

[0015] a ball rotatably arranged on the first end, the ball being rotatably connected with the dial lever mechanism; and

[0016] a connecting rod having one end movably connected with the second end and the other end rotatably connected with the rack of the anesthetizer, the other end of the first elastic element abutting against the connecting rod, the swing lever being able to extend and retract relative to the connecting rod so as to compress or elongate the first elastic element to adjust the force applied to the first end

[0017] Further, the dial lever mechanism comprises:

[0018] a dial lever assembly arranged in cooperation with the mounting seat, the swing lever assembly being rotatably connected with the dial lever assembly, the dial lever assembly being able to rotate relative to the mounting seat between the first and second rotation positions, the mounting seat and the dial lever assembly jointly forming a mounting cavity, the bottom of the mounting seat being provided with an opening in communication with the mounting cavity; and

[0019] a movable element being able to lift between a first lifting position and a second lifting position of the mounting cavity and being transmissionally connected with the mounting seat and the dial lever mechanism, the dial lever assembly being able to drive the movable element to lift between the first and second lifting positions when the dial lever assembly rotates between the first and second rotation positions, so as to be accommodated in the mounting cavity or extend out of the opening and trigger the anesthetizer to switch between the manual state and the machine-controlled state.

[0020] Further, the dial lever mechanism comprises:

[0021] A push rod body matched with the mounting base, the push rod body is in transmission connection with the movable element and in rotation connection with the swing rod assembly, the top of the push rod body is provided with an activity hole and a label slot, the top end of the movable element is embedded in the activity hole in a lifting manner;

[0022] A push rod handle extending outward from the surface of the push rod body; and

[0023] A first limiting arc wall extending from the push rod body to the mounting base, the first limiting arc wall and the peripheral wall of the push rod body are spaced to form a rotation slot, the mounting base is provided with a rotation arc wall, the rotation arc wall is rotatably embedded in the rotation slot, the outer surface of the first limiting arc wall is provided with a mounting slot, one end of the swing rod assembly is rotatably embedded in the mounting slot.

[0024] Further, the first limiting arc wall is provided with a limiting part protruding to the mounting base, and the mounting slot is distributed on the first limiting arc wall and the limiting part;

[0025] The mounting base is further provided with a second limiting arc wall extending to the push rod body, the opening is located at the bottom of the second limiting arc wall, the bottom of the first limiting arc wall is in sliding contact with the top of the second limiting arc wall, and the limiting part can rotate between the two ends of the second limiting arc wall.

[0026] Further, the manual machine control switching device further comprises a push rod cover covering the push rod body and the mounting base, the top and the bottom of the push rod cover are respectively provided with a sector-shaped opening and a avoiding opening, the push rod handle extends out of the sector-shaped opening, the two side limit positions of the sector-shaped opening correspond to the first rotation position and the second rotation position respectively, and the swing rod assembly extends into the avoiding opening and can swing in the avoiding opening.

[0027] Further, the movable element comprises:

[0028] A limiting column embedded in the activity hole, when the push rod body is rotated, the limiting column can be lifted relative to the push rod body through the activity hole; and

[0029] A spiral column connected with the limiting column and in transmission connection with the mounting base, when the swing rod assembly is rotated, the limiting column can be rotated, and at the same time, the spiral column can be rotated and lifted in the mounting base, when the swing rod assembly is located at the first rotation position, the spiral column is accommodated in the mounting cavity and located at the first lifting position, and when the swing rod assembly is located at the second rotation position, the spiral column extends out of the opening and is located at the second lifting position.

[0030] Further, the side surface of the spiral column is provided with a spiral guide groove which is spirally distributed along the length direction of the spiral column, and a guide column is arranged on the second limiting arc wall and movably embedded in the spiral guide groove; and / or

[0031] The second limiting arc wall is further provided with a plurality of limiting ribs which are distributed along the height direction of the second limiting arc wall and in contact with the surface of the spiral column.

[0032] Further, the manual-machine control switching device further comprises a sensing device arranged on the rack of the anesthesia machine and located at the side of the swing lever assembly close to the first rotation position and / or the second rotation position, and when the lever mechanism is rotated to the first rotation position and / or the second rotation position, the sensing device is triggered by the swing lever assembly to generate a sensing.

[0033] The embodiment of the present application also provides an anesthesia machine, comprising:

[0034] a rack;

[0035] a breathing circuit arranged on the rack, wherein the breathing circuit comprises a mixed gas branch, a manual branch and a machine control branch, a manual ventilation port is arranged between the mixed gas branch and the manual branch, and a machine control ventilation port is arranged between the machine control branch and the mixed gas branch;

[0036] a gas path switching device arranged in the breathing circuit, wherein the gas path switching device is movable relative to the manual ventilation port and the machine control ventilation port to control the opening and closing of the manual ventilation port and the machine control ventilation port, thereby controlling the gas path switching between the mixed gas branch and the manual branch and the machine control branch; and

[0037] The manual-machine control switching device according to any one of the above is arranged on the rack and corresponds to the gas path switching device;

[0038] When the lever mechanism is rotated to the first rotation position, the gas path switching device is triggered to open the manual ventilation port and close the machine control ventilation port, and the anesthesia machine is switched to a manual state; when the lever mechanism is rotated to the second rotation position, the gas path switching device is triggered to open the machine control ventilation port and close the manual ventilation port, and the anesthesia machine is switched to a machine control state.

[0039] Further, the gas path switching device comprises:

[0040] a piston rod, wherein the top end of the piston rod corresponds to the manual-machine control switching device, and the piston rod is movably arranged through the manual ventilation port and the machine control ventilation port;

[0041] A second elastic element arranged on the bottom wall of the breathing circuit, one end of the second elastic element is connected with the bottom wall of the breathing circuit, the other end is connected with the bottom end of the piston rod, when the lever mechanism is in the first rotating position, the second elastic element is in a compressed state;

[0042] A sealing film sleeved on the piston rod and located between the manual ventilation port and the machine-controlled ventilation port, the piston rod can drive the sealing film to move relative to the manual ventilation port and the machine-controlled ventilation port to open the manual ventilation port and block the machine-controlled ventilation port, or open the machine-controlled ventilation port and block the manual ventilation port; and

[0043] A sealing element sleeved on the piston rod and blocking the communication port between the breathing circuit and the rack, the sealing element protrudes towards the sealing film.

[0044] In the manual and machine-controlled switching device, when the lever mechanism is in the intermediate position between the first rotating position and the second rotating position, the intermediate position between the first rotating position and the intermediate position, and the intermediate position between the second rotating position and the intermediate position, the lever assembly drives the lever mechanism to rotate to the first rotating position or the second rotating position, the first rotating position, and the second rotating position, respectively, so that the lever mechanism is only in the first rotating position or the second rotating position, and will not be in the intermediate position between the first rotating position and the second rotating position, that is, the anesthetic machine will only be in the manual state or the machine-controlled state, and will not be in the intermediate state. The structure of the present scheme is simple and easy to operate, the control feels smooth and not stuck, and the problem of mutual gas mixing between the manual mode branch and the machine-controlled mode branch caused by the intermediate point of the manual and machine-controlled switching switch in the prior art is simply and effectively solved, and the safety problem of the anesthetic machine is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a perspective view of an anesthetic machine that is part of an embodiment of the present application;

[0046] Figure 2 is a structural schematic view of an anesthetic machine that is part of an embodiment of the present application;

[0047] Figure 3 is a perspective exploded schematic view of a manual and machine-controlled switching device according to an embodiment of the present application;

[0048] Figure 4 is a cross-sectional schematic view of a lever assembly according to an embodiment of the present application;

[0049] Figure 5 is a perspective view of a lever assembly according to an embodiment of the present application;

[0050] Figure 6is a perspective view of the mounting seat of the embodiment of the present application;

[0051] Figure 7 is a perspective view of the shifting lever cover of the embodiment of the present application;

[0052] Figure 8 is a perspective view of the movable member of the embodiment of the present application;

[0053] Figure 9 is a structural schematic view of the anesthetizer in the manual state of the embodiment of the present application;

[0054] Figure 10 is a structural schematic view of the anesthetizer in the machine-controlled state of the embodiment of the present application;

[0055] Figure 11 is another structural schematic view of the anesthetizer in the machine-controlled state of the embodiment of the present application.

[0056] Main element symbol explanation:

[0057] Shifting lever mechanism-10; shifting lever assembly-11; shifting lever main body-111; movable hole-1111; label slot-1112; groove-1113; shifting lever handle-112; first limiting arc wall-113; mounting slot-1131; limiting part-1132; movable member-12; limiting column-121; spiral column-122; spiral guide groove-1221; mounting seat-20; rotating arc wall-21; second limiting arc wall-22; positioning part-23; second fixed ear part-24; guide column-25; limiting rib-26; swing lever assembly-30; swing lever-31; movable slot-311; first elastic element-32; ball-33; connecting rod-34; fixed shaft-35; shifting lever cover-40; fan-shaped opening-41; avoiding opening-42; convex rib-43; positioning slot-44; first fixed ear part-45; inductor-50; first rotating position-A1; second rotating position-A2; intermediate position-A3; first lifting position-B1; second lifting position-B2; manual machine control switching device-100; rack-200; cover-210; mixed gas branch-310; manual branch-320; manual air vent-321; first guide part-322; first sealing convex edge-323; mounting part-324; machine control branch-330; machine control air vent-331; second guide part-332; second sealing convex edge-333; gas path switching device-400; piston rod-410; step part-411; second elastic element-420; sealing diaphragm-430; sealing member-440; mounting peripheral edge-441; sealing main part-442; matching part-443; anesthetizer-1000. DETAILED DESCRIPTION

[0058] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, wherein identical or similar labels denote identical or similar elements or elements with identical or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0059] In the description of the present application, it should be understood that the orientation or position relationship indicated in the description of the orientation and position relationship is based on the orientation or position relationship shown in the drawings, which is only for the purpose of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0060] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0061] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0062] Please refer to Figures 1 to 3 , Figure 9 With Figure 10 , the manual machine control switching device 100 of the embodiment of the present application is used for an anesthesia machine 1000, which comprises:

[0063] A mounting seat 20, which is arranged on a rack 200 of the anesthesia machine 1000;

[0064] A lever mechanism 10 arranged on the mounting seat 20, the lever mechanism 10 can rotate relative to the mounting seat 20 between a first rotation position A1 and a second rotation position A2, so as to trigger the control of the anesthesia machine 1000 to switch between a manual state and a machine control state; and

[0065] A swing lever assembly 30, one end of which is rotatably connected with the lever mechanism 10, and the other end of which is rotatably connected with the frame 200 of the anesthesia machine 1000, the lever mechanism 10 and the swing lever assembly 30 can rotate synchronously;

[0066] When the lever mechanism 10 is located at the intermediate position A3 between the first rotation position A1 and the second rotation position A2, the first rotation position A1 and the intermediate position A3, and the second rotation position A2 and the intermediate position A3, respectively, the swing lever assembly 30 drives the lever mechanism 10 to rotate to the first rotation position A1 or the second rotation position A2, the first rotation position A1, and the second rotation position A2, respectively.

[0067] In the manual and machine control switching device 100, when the lever mechanism 10 is located at the intermediate position A3 between the first rotation position A1 and the second rotation position A2, the first rotation position A1 and the intermediate position A3, and the second rotation position A2 and the intermediate position A3, respectively, the swing lever assembly 30 drives the lever mechanism 10 to rotate to the first rotation position A1 or the second rotation position A2, the first rotation position A1, and the second rotation position A2, respectively, so that the lever mechanism 10 is only in the first rotation position A1 or the second rotation position A2, and not in the intermediate position A3 between the first rotation position A1 and the second rotation position A2, that is, the anesthesia machine 1000 is only in the manual state or the machine control state, and not in the intermediate state.

[0068] The structure of the present scheme is simple and easy to operate, the control feels smooth and not stuck, and the mutual gas mixing between the manual mode branch and the machine control mode branch caused by the intermediate point of the manual and machine control switching switch in the prior art is simply and effectively solved, and the use safety problem of the anesthesia machine 1000 is avoided.

[0069] In the embodiment of the present application, the frame 200 of the anesthesia machine 1000 is provided with a breathing circuit and other mechanisms, and the mounting seat 20 is detachably arranged on the frame 200 and corresponds to the breathing circuit. Specifically, the manual and machine control switching device 100 can be detachably arranged at a position on the upper surface of the frame 200 of the anesthesia machine 1000, which is easy to be touched by the user, so as to facilitate the user to operate and switch the manual state and the machine control state of the anesthesia machine 1000, and also make the state of the manual and machine control switching device 100 more stable, and not easy to shake, misplace, etc.

[0070] The dial lever mechanism 10 has a part that can be dialed, pried or pushed by the user, which can extend outwardly from the outside of the manual machine control switching device 100 by a certain length, so as to facilitate the user to operate. The rotation of the dial lever mechanism 10 relative to the mounting base 20 between the first rotation position A1 and the second rotation position A2 can be that the dial lever mechanism 10 can be dialed in the mounting base 20 to rotate between the first rotation position A1 and the second rotation position A2, and at the same time, part of the structure of the dial lever mechanism 10 can be lifted to convert the rotation action into a lifting control to trigger the control of the switching of the manual state and the machine control state of the breathing circuit under the mounting base 20, realizing the function similar to a rotary knob.

[0071] In the embodiment of the present application, the dial lever mechanism 10 can include a rotating part and a lifting part in transmission connection with the rotating part, wherein: at least part of the structure of the rotating part is located outside, used to receive the dialing operation of the user to rotate, as a rotary knob visible and controllable by the user to confirm the state and be used by the user; the lifting part is located inside, used to be lifted by the rotating part in transmission, and can realize the function of a button to enter the rack 200 to control the switching of the breathing circuit through the lifting action.

[0072] Please combine Figures 1 to 3 , Figure 9 and Figure 10 , and since the dial lever mechanism 10 includes the rotating part and the lifting part, corresponding to the first rotation position A1 and the second rotation position A2, the lifting part can be lifted between the first lifting position B1 and the second lifting position B2, that is, when the dial lever mechanism 10 is located at the first rotation position A1, the rotating part is located at the first rotation position A1, and the lifting part is located at the first lifting position B1, and when the dial lever mechanism 10 is located at the second rotation position A2, the rotating part is located at the second rotation position A2, and the lifting part is located at the second lifting position B2, in this way, the cooperation of rotation and lifting realizes the operation display to the user and the actual control of the breathing circuit.

[0073] In the embodiment of the present application, the swing lever assembly 30 has a certain length, one end of which is in rotation connection with the dial lever mechanism 10, and the other end can be positioned on the rack 200 through a rotating shaft or a rod to be in rotation connection with the rack 200, and the rotation of the dial lever mechanism 10 can drive the swing lever assembly 30 to swing at the same time, and the swing of the swing lever assembly 30 can also drive the dial lever mechanism 10 to rotate at the same time, that is, the dial lever mechanism 10 and the swing lever assembly 30 are linked together.

[0074] The swing lever assembly 30 itself can be provided with a spring or other elastic structure, so that when it swings and deforms, it can generate a certain pushing force or pulling force on the lever mechanism 10, so that the lever mechanism 10 is automatically returned to the original position when it is not pushed to the right position, or the lever mechanism 10 is pushed to rotate to any one of the first rotation position A1 and the second rotation position A2, so that the lever mechanism 10 can only be in the two extreme positions of the first rotation position A1 and the second rotation position A2, and will not be in the intermediate position A3.

[0075] Please continue to combine Figures 1 to 3 、 Figure 9 and Figure 10 , for example, the lever mechanism 10 cannot be directly pushed to the first rotation position A1 or the second rotation position A2 by the user, but the rotation between the first rotation position A1 and the second rotation position A2 can include the following cases:

[0076] 1. When the lever mechanism 10 is originally in the first rotation position A1 and is pushed by the user to the second rotation position A2, but only rotates between the first rotation position A1 and the intermediate position A3, the swing lever assembly 30 pushes the lever mechanism 10 to the first rotation position A1 side, so that the lever mechanism 10 is returned to the first rotation position A1;

[0077] 2. When the lever mechanism 10 is originally in the first rotation position A1 and is pushed by the user to the second rotation position A2, but only rotates to the intermediate position A3, the swing lever assembly 30 pushes the lever mechanism 10 to rotate to the first rotation position A1 or the second rotation position A2 according to the size of the kinetic energy received and the actual movement trend. Generally speaking, because the kinetic energy is not enough to make the lever mechanism 10 rotate through the intermediate position A3, the lever mechanism 10 will be returned to the first rotation position A1;

[0078] 3. When the lever mechanism 10 is originally in the first rotation position A1 and is pushed by the user to the second rotation position A2, and rotates between the intermediate position A3 and the second rotation position A2, the swing lever assembly 30 pushes the lever mechanism 10 to the second rotation position A2 side, so that the lever mechanism 10 is quickly rotated to the second rotation position A2;

[0079] 4. When the lever mechanism 10 is originally in the second rotation position A2 and is pushed by the user to the first rotation position A1, but only rotates between the second rotation position A2 and the intermediate position A3, the swing lever assembly 30 pushes the lever mechanism 10 to the second rotation position A2 side, so that the lever mechanism 10 is returned to the second rotation position A2;

[0080] 5. When the dial lever mechanism 10 is originally in the second rotation position A2 and is dialled by the user to the first rotation position Al, but only to the intermediate position A3, the swing lever assembly 30 pushes the dial lever mechanism 10 to rotate to the first rotation position Al or the second rotation position A2 according to the amount of kinetic energy received and the actual movement trend. Generally speaking, because the kinetic energy is not enough to make the dial lever mechanism 10 rotate through the intermediate position A3, the dial lever mechanism 10 will return to the second rotation position A2.

[0081] 6. When the dial lever mechanism 10 is originally in the second rotation position A2 and is dialled by the user to the first rotation position Al, and rotates to the intermediate position A3 and the first rotation position Al, the swing lever assembly 30 pushes the dial lever mechanism 10 to the first rotation position Al side, so that the dial lever mechanism 10 rotates to the first rotation position Al faster.

[0082] It should be noted that the above description of the dial lever mechanism 10 being in the intermediate position A3 is only to illustrate various rotation conditions of the dial lever mechanism 10. From the perspective of mechanics, the dial lever mechanism 10 will not or cannot stay in the intermediate position A3 when the dial lever mechanism 10 is connected to the swing lever assembly 30, because the force on the dial lever mechanism 10 at the intermediate position A3 is not stable and will be disturbed by the external force from the swing lever assembly 30, causing the dial lever mechanism 10 to tend to rotate to the first rotation position Al or the second rotation position A2. The dial lever mechanism 10 will only rotate to the first rotation position Al, between the first rotation position Al and the intermediate position A3, between the second rotation position A2 and the intermediate position A3, and the second rotation position A2, and finally only to the first rotation position Al or the second rotation position A2.

[0083] Please refer to Figure 1 and Figure 2 Further, the manual machine control switching device 100 further comprises a sensing device 50 arranged on the rack 200 of the anesthesia machine 1000 and located on the side of the swing lever assembly 30 close to the first rotation position Al and / or the second rotation position A2. When the dial lever mechanism 10 rotates to the first rotation position Al and / or the second rotation position A2, the sensing device 50 is triggered by the swing lever assembly 30 to generate a sensing.

[0084] With Figure 1 and Figure 2For example, the side close to the first rotation position A1 of the swing lever assembly 30 is the right side of the swing lever assembly 30, and the side close to the second rotation position A2 is the left side of the swing lever assembly 30, that is, the left side and / or the right side of the swing lever assembly 30 is provided with the sensing device 50, when the lever mechanism 10 is rotated to the first rotation position A1 and / or the second rotation position A2, the sensing of the sensing device 50 will be triggered, such as the swing lever assembly 30 collides with the sensing device 50, or causes the sensing device 50 to be shielded, or generates electromagnetic induction with the sensing device 50, so that the user receives the operation feedback signal to understand the current control state of the breathing circuit.

[0085] The sensing device 50 can be electrically connected with the controller of the anesthesia machine 1000, the controller receives the sensing signal sent by the sensing device 50, controls the signal lamp or the horn and other prompting devices on the anesthesia machine 1000 to give sound and light prompts, or the sensing device 50 itself can have a prompting function, and can give corresponding prompts when receiving the touch of the swing lever assembly 30.

[0086] In the embodiment of the present application, the sensing device 50 is arranged on the side close to the second rotation position A2 of the swing lever assembly 30, such as the left side of the swing lever assembly 30 as shown in the figure, and the swing lever assembly 30 triggers the sensing of the sensing device 50 in the process of swinging to the second rotation position A2, that is, the user is prompted when the anesthesia machine 1000 is switched to the machine control state. Figure 2

[0087] Further, the sensing device 50 includes a microswitch, an infrared proximity sensor, a light sensor, and a Hall sensor.

[0088] That is, the swing lever assembly 30 can collide with the sensing device 50 (microswitch), or cause the sensing device 50 to be shielded (infrared proximity sensor, light sensor), or generate electromagnetic induction with the sensing device 50 (Hall sensor), and the sensing of the sensing device 50 is triggered in different ways. For the case that the sensing device 50 is a Hall sensor, a certain structure in the swing lever assembly 30 is made of a magnetic material to generate sensing with the sensing device 50.

[0089] In the embodiment of the present application, the sensing device 50 is a microswitch, and the part used for triggering is the swing lever assembly 30, and the swing lever assembly 30 slightly contacts the sensing device 50 to trigger, that is, the sensing of the sensing device 50 is triggered by relatively simple touch, the sensing effect is good, and the cost is relatively low.

[0090] Please refer to Figures 1 to 4 Further, the swing lever assembly 30 includes:

[0091] The swing lever 31 includes a first end and a second end connected with the first end;​

[0092] The first elastic element 32 is sleeved on the swing rod 31, and one end of the first elastic element 32 abuts against the first end;

[0093] The ball 33 is rotatably arranged on the first end, and the ball 33 is rotatably connected with the dial lever mechanism 10; and

[0094] The connecting rod 34 is movably connected with the second end at one end and rotatably connected with the rack 200 of the anesthesia machine 1000 at the other end, and the other end of the first elastic element 32 abuts against the connecting rod 34; the swing rod 31 can be extended and retracted relative to the connecting rod 34, so that the elastic element 32 is compressed or elongated to adjust the size of the force applied to the first end.

[0095] In the embodiment of the present application, the ball 33 is arranged on the first end of the swing rod 31 through a rotating shaft in a transverse manner, so as to be rotatable in a horizontal plane or an XY plane; the swing lever assembly 30 is rotatably connected with the dial lever mechanism 10 through the ball 33 arranged on the first end of the swing rod 31. The connecting rod 34 is rotatably connected with the rack 200 by penetrating the hole with a rotating shaft, a screw rod or the like, so that the connecting rod 34 is rotatably connected with the rack 200, and the swing lever assembly 30 is rotatably connected with the rack 200 through the connecting rod 34 to realize swinging.

[0096] The first elastic element 32 can be a structure such as a spring that can generate force through simple deformation, and is convenient for sleeving on the swing rod 31 to realize installation. The swing rod 31 is arranged to be extended and retracted on the connecting rod 34 to adapt to the length change requirement of the swing lever assembly 30 when swinging, and also compresses or elongates the first elastic element 32. The swing lever assembly 30 applies force to the first mounting member 33 through the first elastic element 32 to realize active driving rotation of the dial lever mechanism 10 in the non-first rotation position A1 and the non-second rotation position A2.

[0097] Specifically, when the dial lever mechanism 10 is in the first rotation position A1 and the second rotation position A2, the first elastic element 32 can be in a compressed state or a natural state, and can apply a pushing force or no pushing force to the first mounting member 33. When the dial lever mechanism 10 is dialled to rotate from the first rotation position A1 to the second rotation position A2, or dialled to rotate from the second rotation position A2 to the first rotation position A1, the swing rod 31 gradually extends into the connecting rod 34 to shorten the length of the entire swing lever assembly 30, and at this time, the first elastic element 32 is gradually compressed and compressed to the shortest state at the intermediate position A3. After the dial lever mechanism 10 passes through the intermediate position A3, the elastic element 32 gradually elongates to apply a pushing force to the first mounting member 33, so that the ball 33 applies a pushing force to the dial lever mechanism 10, and the dial lever mechanism 10 is more quickly rotated to the first rotation position A1 or the second rotation position A2.

[0098] In one embodiment, even if the dial lever mechanism 10 is in the first rotation position A1 and the second rotation position A2, the first elastic element 32 can still be in a compressed state, i.e., still exerts a pushing force on the dial lever mechanism 10 to rotate it to the first rotation position A1 and the second rotation position A2, so that the dial lever mechanism 10 is more stably in the first rotation position A1 and the second rotation position A2, and thus the anesthesia machine 1000 is more stably in the manual state or the machine-controlled state.

[0099] Referring to Figure 3 and Figure 4 Further, the second end is provided with a movable slot 311, and the connecting rod 34 is provided with a fixing shaft 35 penetrating the connecting rod 34 and the movable slot 311, the second end is limited by the fixing shaft 35 and movably embedded in the connecting rod 34, and the fixing shaft 35 can prevent the swing lever 31 from being disconnected from the connecting rod 34.

[0100] Specifically, the movable slot 311 extends along the length direction of the second end and penetrates the second end along the diameter direction of the second end to provide a movable avoiding space for the swing lever 31, and the fixing shaft 35 penetrates the connecting rod 34, the swing lever 31 and the movable slot 311 along the circumferential direction of the connecting rod 34 and the swing lever 31 to movably connect the swing lever 31 and the connecting rod 34.

[0101] In addition, the connecting rod 34 is provided with a space for the movement of the second end, the shape of the space is matched with the shape of the second end, so that the swing lever 31 can stably extend and retract relative to the connecting rod 34.

[0102] Referring to Figure 3 and Figure 5 Further, the dial lever mechanism 10 comprises:

[0103] The dial lever assembly 11 is arranged in cooperation with the mounting seat 20, the swing lever assembly 30 is rotationally connected with the dial lever assembly 11, the dial lever assembly 11 can rotate relative to the mounting seat 20 between the first rotation position A1 and the second rotation position A2, the mounting seat 20 and the dial lever assembly 11 jointly form a mounting cavity, and the bottom of the mounting seat 20 is provided with an opening communicating with the mounting cavity;

[0104] The movable element 12 can be lifted between the first lifting position B1 and the second lifting position B2 of the mounting cavity and is drivingly connected with the mounting seat 20 and the dial lever mechanism 10, and when the dial lever assembly 11 rotates between the first rotation position A1 and the second rotation position A2, the movable element 12 can be lifted between the first lifting position B1 and the second lifting position B2 to be accommodated in the mounting cavity or to extend out of the opening and trigger the anesthesia machine 1000 to switch between the manual state and the machine-controlled state.

[0105] Specifically, the dial lever assembly 11 is arranged at a position visible and touchable by the user to realize the function similar to a knob, the dial lever assembly 11 is detachably and rotatably arranged on the mounting seat 20, and the dial lever assembly 11 has an outwardly extending part to facilitate the user to operate the dial lever assembly 11. The mounting seat 20 has an opening corresponding to the breathing circuit, and the dial lever mechanism 10 is movably connected with the breathing circuit through the opening to realize the switching control of the manual state and the machine-controlled state of the breathing circuit.

[0106] The first rotation position A1 (as shown in Figure 2 , the rightmost position) and the second rotation position A2 (as shown in Figure 2 , the leftmost position) are two limit positions of the dial lever assembly 11 rotatable on the mounting seat 20, corresponding to the manual state and the machine-controlled state of the anesthesia machine 1000, and the rotation of the dial lever assembly 11 can be limited by arranging corresponding structures on the mounting seat 20, so as to determine the actual positions of the first rotation position A1 and the second rotation position A2.

[0107] Generally, the movable part 12 is arranged at a position invisible and untouchable by the user, and realizes the function similar to a button through the lifting action. The mounting cavity can also be understood as an activity channel of the movable part 12, which is used for mounting the movable part 12 and realizing the activity of the movable part 12, that is, the lifting and rotating of the movable part 12.

[0108] In the structural relationship, the movable part 12 is driven by the dial lever assembly 11 and cooperates with the mounting seat 20 to convert the rotating action of the dial lever assembly 11 into the lifting and rotating action, that is, the lifting and rotating in the mounting cavity, so as to extend or retract from the mounting cavity, and trigger the control of the breathing circuit to switch to the manual state or the machine-controlled state.

[0109] Please refer to Figure 9 and Figure 10 , wherein the first lifting position B1 is the highest position at which the movable part 12 can ascend in the mounting cavity, at this time the movable part 12 is accommodated in the mounting cavity, and the breathing circuit is in the manual state, and the second lifting position B2 is the lowest position at which the movable part 12 can descend in the mounting cavity, at this time the movable part 12 extends from the mounting cavity through the opening to switch the breathing circuit to the machine-controlled state.

[0110] Please refer to Figure 3 , Figure 5 and Figure 6 , and further, the dial lever assembly 11 comprises:

[0111] The jigger body 111 is matched with the mounting base 20, and is in transmission connection with the movable element 12 and in rotation connection with the swing lever assembly 30. The top of the jigger body 111 is provided with an active hole 1111 and a label slot 1112, and the top end of the movable element 12 is embedded in the active hole 1111 in a lifting manner.

[0112] The jigger handle 112 extends outwardly from the surface of the jigger body; and

[0113] The first limiting arc wall 113 extends from the jigger body 111 to the mounting base 20. The first limiting arc wall 113 and the peripheral wall of the jigger body 111 are spaced to form a rotation slot. The mounting base 20 is provided with a rotation arc wall 21, which is rotatably embedded in the rotation slot. The outer surface of the first limiting arc wall 113 is provided with a mounting slot 1131, and one end of the swing lever assembly 30 is rotatably embedded in the mounting slot 1131.

[0114] Specifically, the jigger body 111 is substantially circular in shape, which is more convenient for rotation on the mounting base 20. The active hole 1111 formed in the top of the jigger body 111 is adapted to the shape of the top end of the movable element 12, so that the movable element 12 can be rotated and guided to lift. The label slot 1112 is used for pasting labels, so that the surface of the label is flush with the top surface of the jigger body 111. The side surface of the jigger body 111 is provided with a structure for rotation connection with the swing lever assembly 30 (i.e. the ball 33), such as a slot, a hole or other structure capable of rotation and limiting, which is convenient for linkage between the jigger assembly 11 and the swing lever assembly 30, i.e. for synchronous movement of the two.

[0115] The jigger handle 112 is a part for the user to push. The surface thereof can be a smooth surface, but can have a part of the surface concave inwardly, so that it is not only convenient for cleaning, but also convenient for the user to push with fingers. Alternatively, the surface of the jigger handle 112 can be a rough surface or provided with friction lines, which can directly increase the friction between the jigger handle 112 and the user's fingers.

[0116] The first limiting arc wall 113 is an arc wall extending from the inner top surface of the jigger body 111 to the mounting base 20. The rotation slot is formed between the first limiting arc wall 113 and the peripheral wall of the jigger body 111, and is used for corresponding with the rotation arc wall 21 on the mounting base 20. The rotation arc wall 21 is an arc wall extending upwardly from the upper surface of the mounting base 20, which is embedded in the rotation slot to enable the jigger body to be relatively stably placed on the mounting base 20 and to provide guidance for rotation of the jigger body.

[0117] In the embodiment of the present application, the mounting groove 1131 extends along the height direction of the first limiting arc wall 113 to the end of the first limiting arc wall 113 to form a notch, when the swing lever assembly 30 is rotationally connected with the lever mechanism 10, the ball 33 can be inserted into the mounting groove 1131 along the extension direction of the mounting groove 1131 from the notch. When the lever body rotates, the ball 33 is rotated by the first limiting arc wall 113, and then the swing lever assembly 30 swings. When the swing lever assembly 30 swings, the first limiting arc wall 113 is rotated by the ball 33, and then the lever body rotates.

[0118] Please continue to refer to Figure 3 、 Figure 5 and Figure 6 Furthermore, the first limiting arc wall 113 is provided with a limiting portion 1132 protruding towards the mounting seat 20, and the mounting groove 1131 is distributed on the first limiting arc wall 113 and the limiting portion 1132. The mounting seat 20 is also provided with a second limiting arc wall 22 extending towards the lever body 111, and the opening is located at the bottom of the second limiting arc wall 22. The bottom of the first limiting arc wall 113 is in sliding contact with the top of the second limiting arc wall 22, and the limiting portion 1132 can rotate between the two ends of the second limiting arc wall 22.

[0119] Specifically, the limiting portion 1132 extends downward from the middle part of the bottom of the first limiting arc wall 113. The second limiting arc wall 22 is an arc-shaped wall extending upward from the upper surface of the mounting seat 20, which is surrounded by the rotating arc wall 21 and has a height smaller than that of the rotating arc wall 21, so as to provide certain support for the first limiting arc wall 113, and the alignment between the lever body and the mounting seat 20 is more stable, and the rotation of the lever body is also more stable.

[0120] The opening is located at the bottom of the second limiting arc wall 22, that is, the movable part 12 can rotate and lift in the surrounding of the second limiting arc wall 22 to extend out of or retract into the opening. The rotation range of the limiting portion 1132 is approximately equal to the rotation range of the lever body (or the lever handle 112), and the positions between the two ends of the second limiting arc wall 22 define the first rotation position A1 and the second rotation position A2, that is, the rotation of the limiting portion 1132 between the two ends of the second limiting arc wall 22 is equivalent to the rotation of the lever body between the first rotation position A1 and the second rotation position A2, which defines the actual position of the rotation of the lever assembly 11.

[0121] Please refer to Figure 3 、 Figures 5 to 7Further, the manual mechanical control switching device 100 further comprises a cover lever main body 111 and a lever cover 40 of the mounting base 20, the top and bottom of the lever cover 40 are respectively provided with a sector opening 41 and an avoiding opening 42, the lever handle 112 extends from the sector opening 41, the two side limit positions of the sector opening 41 correspond to the first rotation position A1 and the second rotation position A2 respectively, and the swing lever assembly 30 extends into the avoiding opening 42 and can swing in the avoiding opening 42.

[0122] In the embodiment of the present application, in order to avoid the problem that the lever main body 111 falls off from the mounting base 20, a lever cover 40 is further arranged to cover the lever main body 111 on the mounting base 20, and the top and bottom of the lever cover 40 are respectively provided with a sector opening 41 and an avoiding opening 42, so as to facilitate the lever handle 112 and the swing lever assembly 30 to pass through, and the two side limit positions of the sector opening 41 limit the rotation range of the lever handle 112, that is, limit the range of the first rotation position A1 and the second rotation position A2, and through the cooperation of the sector opening 41 and the second limit arc wall 22, it is ensured that the lever assembly 11 is accurately rotated to the first rotation position A1 and the second rotation position A2.

[0123] In addition, the rear end of the lever body is cut off a part, which is convenient for being inserted into the lever cover 40, so that the lever handle 112 can extend from the sector opening 41, and the relative compactness between the lever body and the lever cover 40 is ensured. The label slot 1112 mentioned above can be exposed from the sector opening 41, which is convenient for the user to know the prompt, and the label is attached in the label slot 1112, so that the lever body does not rub against the lever cover 40 during the lever rotation, thereby avoiding abrasion.

[0124] Please refer to Figure 3 , Figures 5 to 7 Further, the top of the lever main body 111 is provided with a groove 1113, and the inner top surface of the lever cover 40 is provided with a convex rib 43, and the convex rib 43 is correspondingly embedded in the groove 1113; or, the top of the lever main body 111 is provided with a convex rib, and the inner top surface of the lever cover 40 is provided with a groove, and the convex rib is correspondingly embedded in the groove.

[0125] Specifically, the groove 1113 is annularly distributed on the top of the lever main body 111 or the inner top surface of the lever cover 40, and the convex rib 43 is annularly attached to the inner top surface of the lever cover 40 or the top of the lever main body 111. The convex rib 43 can be made of deformable materials such as rubber, plastic or silicone. When the lever main body 111 is contained in the lever cover 40, the convex rib 43 corresponds to and is embedded in the groove 1113. When the lever handle 112 rotates the lever main body 111, the convex rib 43 can rub against the groove 1113 to provide certain damping, so that the user's fingers can feel a certain resistance, that is, the rotation feedback can be obtained, and the use experience is improved.

[0126] In the embodiment of the present application, the groove 1113 is arranged on the top surface of the lever body 111, and the convex rib 43 is attached to the inner top surface of the lever cover 40.

[0127] Please refer to Figure 3 , Figure 6 and Figure 7 Furthermore, the outer side surface of the mounting seat 20 is provided with a positioning part 23, and the inner side of the bottom of the lever cover 40 is provided with a positioning groove 44, and the positioning part 23 is embedded in the positioning groove 44; or, the outer side surface of the mounting seat 20 is provided with a positioning groove, and the inner side of the bottom of the lever cover 40 is provided with a positioning part, and the positioning part is embedded in the positioning groove.

[0128] In order to enable the mounting seat 20 and the lever cover 40 to be more simply and accurately positioned and installed, and at the same time prevent the mounting seat 20 and the lever cover 40 from rotating relative to each other, a positioning part 23 extending along the height direction of the mounting seat 20 and protruding outward, or a positioning groove 44 recessed inward, can be arranged on the mounting seat 20, and a positioning groove 44 extending along the height direction of the lever cover 40 and recessed inward, or a positioning part 23 protruding outward, can be arranged on the lever cover 40, and the positioning part 23 corresponds to the positioning groove 44, so that the mounting seat 20 and the lever cover 40 accurately correspond.

[0129] In the embodiment of the present application, the positioning part 23 is arranged on the mounting seat 20, and the positioning groove 44 is arranged on the lever cover 40, so that the lever cover 40 can be directly covered on the mounting seat 20 during actual installation.

[0130] Please refer to Figure 3 , Figure 6 and Figure 7 Furthermore, the two sides of the bottom of the lever cover 40 are provided with first fixing ears 45, and the two sides of the mounting seat 20 are provided with second fixing ears 24, and the first fixing ears 45 correspond to the second fixing ears 24.

[0131] Specifically, the first fixing ears 45 and the second fixing ears 24 are both provided with through holes, which can be screw holes or through holes, and a fastener such as a screw or a rivet can be inserted through the through holes of the two structures to fix the first fixing ears 45 and the second fixing ears 24, so as to fix the lever cover 40 and the mounting seat 20 together, stably accommodate the lever assembly 11 in the two structures, and make the manual machine control gas path switching device 400 become a stable whole.

[0132] Please refer to Figures 1 to 3 and Figures 8 to 10 Furthermore, the movable part 12 comprises:

[0133] a limiting column 121 embedded in the movable hole 1111, which can be lifted relative to the lever body 111 through the movable hole 1111 when the lever body 111 is rotated; and

[0134] The screw column 122 is connected with the limiting column 121 and is in transmission connection with the mounting seat 20, the rotating of the dial lever assembly 11 can drive the limiting column 121 to rotate, and simultaneously drive the screw column 122 to rotate and lift in the mounting seat 20, when the dial lever assembly 11 is located at the first rotating position A1, the screw column 122 is accommodated in the mounting cavity and is located at the first lifting position B1, when the dial lever assembly 11 is located at the second rotating position A2, the screw column 122 is extended from the opening and is located at the second lifting position B2.

[0135] In the embodiment of the present application, the movable part 12 is divided into two parts, the limiting column 121 and the screw column 122, the limiting column 121 is substantially in the shape of a rectangular body, and the screw column 122 is substantially in the shape of a cylindrical body, wherein the limiting column 121 is used to cooperate with the dial lever body, and can be driven to rotate by the dial lever body to drive the lower screw column 122 to rotate, and the screw column 122 is limited and guided by the mounting seat 20, so that the rotating action can be converted into lifting action to retract or expose from the opening to switch and control the manual state and the machine control state of the breathing circuit below. The screw column 122 itself rotates and lifts in the mounting seat 20, and drives the limiting column 121 to lift in the movable hole 1111, that is, to lift relative to the dial lever body.

[0136] When the dial lever body is located at the first rotating position A1, the limiting column 121 is completely embedded in the movable hole 1111, and the screw column 122 is completely accommodated in the mounting cavity and is located at the first lifting position B1, at this time, the breathing circuit is in the manual state. When the dial lever body is located at the second rotating position A2, the limiting column 121 is lowered from the movable hole 1111, and the screw column 122 is lowered and extended from the opening in the mounting cavity to the second lifting position B2, at this time, the breathing circuit is switched to the machine control state.

[0137] Please refer to Figure 3 and Figure 8 Furthermore, the side surface of the screw column 122 is provided with a spiral guide groove 1221, the spiral guide groove 1221 is spirally distributed along the length direction of the screw column 122, and the second limiting arc wall 22 is provided with a guide column 25, the guide column 25 is movably embedded in the spiral guide groove 1221.

[0138] In the embodiment of the present application, through the sliding and guiding cooperation of the spiral guide groove 1221 and the guide column 25, the rotating force of the dial lever body 111 on the top of the movable part 12 (that is, the limiting column 121) can be transmitted and converted into the rotating and lifting of the movable part 12 (the screw column 122) in the mounting seat 20, and the relative stability of the movable part 12 in the mounting seat 20 is ensured.

[0139] Please refer to Figure 3 and Figure 8Further, the two spiral guide grooves 1221 are alternately arranged on the spiral column 122, and the two guide columns 25 are oppositely arranged on the inner wall of the mounting seat 20 and correspond to the two spiral guide grooves 1221 respectively.

[0140] It can be understood that, by arranging the two groups of spiral guide grooves 1221 and the guide columns 25, the opposite sides of the movable part 12 can be movably connected with the mounting seat 20, the movement stability of the movable part 12 is promoted, and the structural complexity of the mounting seat 20 and the movable part 12 is controlled.

[0141] Of course, in other embodiments, the number of the spiral guide grooves 1221 and the guide columns 25 can also be other, which can be arranged according to actual needs.

[0142] Please refer to Figure 3 and Figure 8 Further, a plurality of limiting ribs 26 are arranged on the second limiting arc wall 22 and in contact with the surface of the spiral column 122.

[0143] Specifically, the limiting ribs 26 protrude inward from the inner wall of the second limiting arc wall 22, that is, protrude toward the center of the mounting cavity, the plurality of limiting ribs 26 are evenly and spacedly arranged on the inner wall of the second limiting arc wall 22, and the plurality of limiting ribs 26 surround the spiral column 122, so as to guide and control the rotation and lifting of the spiral column 122 (i.e. the movable part 12), provide a certain friction force for the rotation and lifting of the spiral column 122, and make the rotation and lifting of the spiral column 122 more stable.

[0144] Please refer to Figures 1 to 3 , Figures 9 to 11 The anesthesia machine 1000 of the embodiment of the present application comprises:

[0145] a rack 200;

[0146] a breathing circuit arranged on the rack 200, the breathing circuit comprising a mixed gas branch 310, a manual branch 320 and a machine control branch 330, a manual ventilation port 321 being arranged between the mixed gas branch 310 and the manual branch 320, and a machine control ventilation port 331 being arranged between the machine control branch 330 and the mixed gas branch 310;

[0147] a gas path switching device 400 arranged in the breathing circuit, the gas path switching device 400 being movable relative to the manual ventilation port 321 and the machine control ventilation port 331 to control the opening and closing of the manual ventilation port 321 and the machine control ventilation port 331, thereby controlling the gas path switching between the mixed gas branch 310 and the manual branch 320 and the machine control branch 330; and

[0148] According to any one of the manual-machine control switching devices 100 described above, the manual-machine control switching device 100 is arranged on the rack 200 and corresponds to the gas path switching device 400.

[0149] When the dial lever mechanism 10 is rotated to the first rotation position A1, the gas path switching device 400 is triggered to open the manual ventilation port 321 and close the machine control ventilation port 331, and the anesthesia machine 1000 is switched to the manual state; when the dial lever mechanism 10 is rotated to the second rotation position A2, the gas path switching device 400 is triggered to open the machine control ventilation port 331 and close the manual ventilation port 321, and the anesthesia machine 1000 is switched to the machine control state.

[0150] In the anesthesia machine 1000 of the embodiment, when the dial lever mechanism 10 is located at the intermediate position A3 between the first rotation position A1 and the second rotation position A2, between the first rotation position A1 and the intermediate position A3, and between the second rotation position A2 and the intermediate position A3, respectively, the swing lever assembly 30 drives the dial lever mechanism 10 to rotate to the first rotation position A1 or the second rotation position A2, to the first rotation position A1, and to the second rotation position A2, respectively, so that the dial lever mechanism 10 is only in the first rotation position A1 or the second rotation position A2, and not in the intermediate position A3 between the first rotation position A1 and the second rotation position A2, that is, the anesthesia machine 1000 is only in the manual state or the machine control state, and not in the intermediate state. The structure of the present scheme is simple and easy to operate, the control feels smooth and not stuck, and the problem of mutual gas mixing between the manual mode branch and the machine control mode branch caused by the intermediate point of the manual-machine control switching switch in the prior art is simply and effectively solved, and the safety problem of the anesthesia machine 1000 is avoided.

[0151] Specifically, in the vertical direction of the rack 200, the mixed gas branch 310 is located between the manual branch 320 and the machine control branch 330, so that the switching of the mixed gas branch 310 between the manual branch 320 and the machine control branch 330 can be realized by the lifting of the gas path switching device 400 in the vertical direction.

[0152] The gas path switching device 400 can be understood as a switching device for controlling the manual state and the machine control state of the breathing circuit, and the gas path switching device 400 corresponds to the manual-machine control switching device 100 and the two are linked. When the user operates the manual-machine control switching device 100, the manual-machine control switching device 100 links the gas path switching device 400 to make lifting action, so as to control the breathing circuit accordingly.

[0153] In combination Figure 1 , Figure 2 with Figure 10As shown, when the dial lever mechanism 10 is rotated to the second rotation position A2, or in other words, when the dial lever assembly 11 is rotated to the second rotation position A2, the movable piece 12 extends downward from the opening to the second lifting position B2, at which time the movable piece 12 presses down the gas path switching device 400, the gas path switching device 400 closes the manual ventilation port 321 and opens the machine-controlled ventilation port 331, the mixed gas branch 310 is disconnected from the manual branch 320 and switched to communicate with the machine-controlled branch 330, at which time the breathing circuit is switched to the machine-controlled state.

[0154] In combination Figure 1 , Figure 2 with Figure 9 As shown, when the dial lever mechanism 10 is rotated to the first rotation position A1, or in other words, when the dial lever assembly 11 is rotated to the first rotation position A1, the movable piece 12 retracts upward from the opening to the first lifting position B1, at which time the movable piece 12 no longer presses down the gas path switching device 400, the gas path switching device 400 can be actively reset, the manual ventilation port 321 is opened and the machine-controlled ventilation port 331 is closed, the mixed gas branch 310 is disconnected from the machine-controlled branch 330 and switched to communicate with the manual branch 320, at which time the breathing circuit is switched to the manual state.

[0155] As shown in Figure 3 , Figures 9 to 11 Further, the gas path switching device 400 comprises:

[0156] A piston rod 410, the top end of the piston rod 410 corresponds to the manual-machine-controlled switching device 100, and the piston rod 410 is movably arranged through the manual ventilation port 321 and the machine-controlled ventilation port 331;

[0157] A second elastic element 420 arranged on the bottom wall of the breathing circuit, one end of the second elastic element 420 is connected with the bottom wall of the breathing circuit, and the other end is connected with the bottom end of the piston rod 410, when the dial lever mechanism 10 is located at the first rotation position A1, the second elastic element 420 is in a compressed state;

[0158] A sealing film 430 sleeved on the piston rod 410 and located between the manual ventilation port 321 and the machine-controlled ventilation port 331, the piston rod 410 can drive the sealing film 430 to move relative to the manual ventilation port 321 and the machine-controlled ventilation port 331 to open the manual ventilation port 321 and block the machine-controlled ventilation port 331, or to open the machine-controlled ventilation port 331 and block the manual ventilation port 321; and

[0159] A sealing element 440 sleeved on the piston rod 410 and blocking the communication port between the breathing circuit and the rack 200, the sealing element 440 protrudes towards the sealing film 430.

[0160] In the embodiment of the present application, the piston rod 410 is movably arranged in the vertical direction through the manual ventilation port 321 and the machine-controlled ventilation port 331, the top end of the piston rod 410 is exposed from the rack 200 of the anesthesia machine 1000 and corresponds to the movable element 12, the piston rod 410 can be in direct contact with the movable element 12, or there can be a gap between them, as long as the normal triggering of the movable element 12 to the piston rod 410 can be ensured.

[0161] The manual ventilation port 321 is located directly below the machine-controlled ventilation port 331, the lever mechanism 10 pushes the piston rod 410 downward through the movable element 12, and the piston rod 410 drives the sealing film 430 between the manual ventilation port 321 and the machine-controlled ventilation port 331 to descend, and the second elastic element 420 can be a spring, at this time the piston rod 410 compresses the second elastic element 420 downward, and when the movable element 12 gradually descends from the first lifting position B1 to the second lifting position B2, the sealing film 430 gradually opens the machine-controlled ventilation port 331 until completely covers the manual ventilation port 321, at this time the machine-controlled branch 330 is communicated with the mixed gas branch 310 through the machine-controlled ventilation port 331.

[0162] When the downward pressure of the movable element 12 to the piston rod 410 disappears, the piston rod 410 is automatically reset by the stretching of the second elastic element 420 at the bottom end, that is, during the process that the movable element 12 gradually rises from the second lifting position B2 to the first lifting position B1, the second elastic element 420 pushes the piston rod 410 to drive the sealing film 430 to gradually rise, so that the manual ventilation port 321 is opened until the machine-controlled ventilation port 331 is completely closed, at this time the manual branch 320 is communicated with the mixed gas branch 310 through the manual ventilation port 321.

[0163] The sealing element 440 is located on the side of the breathing circuit, and it can be understood that since the communication port for installing the gas switching device on the rack 200 is communicated with the machine-controlled branch 330, the sealing element 440 is specifically located in the machine-controlled branch 330, and it protrudes towards the sealing film 430, and the sealing element 440 can be made of materials such as rubber and plastic that can deform, such as a rubber cap. In the natural state, the sealing element 440 is approximately bowl-shaped, and it can form a certain resistance to the gas flowing in the machine-controlled branch 330 and is not easy to be pressed upward, thereby avoiding being pressed out of the communication port, thereby forming an effective seal to the breathing circuit.

[0164] It should be noted that although the piston rod 410 is automatically reset under the action of the spring during the process that the movable element 12 rises from the second lifting position B2 to the first lifting position B1, at the same time, the upward movement of the movable element 12 causes the downward pressure on the piston rod 410 to disappear, and the piston rod 410 is no longer pressed downward by the movable element 12, so that the piston rod 410 can rise and reset, therefore, the upward movement of the movable element 12 can also be understood as the triggering action of the lever mechanism 10 to the gas path switching device 400.

[0165] Please refer to Figures 9 to 11 Further, the sealing member 440 comprises;

[0166] The installation periphery 441 is located at the communicating port, and the rack 200 is provided with a detachable cover 210 corresponding to the communicating port, the cover 210 is pressed to the installation periphery 441 at the communicating port, the top end of the piston rod 410 passes through the cover 210 and corresponds to the manual machine control switching device 100;

[0167] The sealing main body part 442 is connected with the installation periphery 441 and protrudes towards the sealing film 430, and the piston rod 410 passes through the middle part of the sealing main body part 442;

[0168] The fitting part 443 is arranged in the middle part of the sealing main body part 442, and the piston rod 410 is provided with an installation ring groove, and the fitting part 443 is embedded in the limiting ring groove.

[0169] In the embodiment of the present application, the sealing periphery is pressed to the communicating port by arranging the detachable cover 210 on the rack 200, the cover 210 is installed on the rack 200 corresponding to the communicating port by the fastener such as a screw, which is convenient to disassemble and install, and the stability is better. The cover 210 covers the sealing member 440 and the outer periphery thereof completely wraps the installation periphery 441, which not only realizes the installation of the sealing member 440 at the communicating port, but also further improves the sealing performance. In addition, the cover 210 is provided with an opening, the top end of the piston rod 410 passes through the opening and corresponds to the movable part 12, the cover 210 can guide the lifting of the piston rod 410 and reduce the shaking of the piston rod 410.

[0170] The sealing main body part 442 is located in the machine control branch 330 and is roughly in the shape of a bowl or a hemisphere, in the natural state, the sealing main body part 442 protrudes towards the sealing film 430, when the piston rod 410 is lifted, the sealing main body part 442 is deformed upwards or protrudes downwards by the fitting part 443, that is, the sealing main body part 442 can be deformed according to the movement of the piston rod 410, and the sealing effect is guaranteed.

[0171] In the embodiment of the present application, the fitting part 443 is roughly in the shape of a cylinder and has a through hole in the middle, the sectional area of the through hole is smaller than that of the limiting ring groove, since the fitting part 443 can be deformed, when the fitting part 443 is sleeved on the piston rod 410 and embedded in the limiting ring groove, the fitting part 443 can well seal the space between the machine control branch 330 and the top end of the piston rod 410. In addition, the connection between the sealing film 430 and the piston rod 410 is similar to the connection between the fitting part 443 and the piston rod 410.

[0172] Further, the first limiting protrusion is embedded in the second limiting annular groove, and the second limiting protrusion is embedded in the first limiting annular groove.

[0173] Specifically, the first limiting protrusion and the second limiting protrusion are annular, the first limiting protrusion is embedded in the first limiting annular groove, and the second limiting protrusion is embedded in the second limiting annular groove, so that the sealing element 440 and the rack 200 are in tooth-shaped engagement, and the stability of the sealing element 440 at the communication port is further ensured on the basis of the cover 210 pressing the sealing periphery downward on the rack 200.

[0174] Please refer to Figures 9 to 11 Further, the first guide portion 322 is arranged at the manual vent 321, the second guide portion 332 is arranged at the machine-controlled vent 331, the piston rod 410 is movably arranged through the first guide portion 322 and the second guide portion 332, and the step portion 411 is arranged on the piston rod 410 between the sealing film 430 and the second guide portion 332, and the cross-sectional area of the step portion 411 is larger than that of the second guide portion 332.

[0175] Specifically, since the manual vent 321 and the machine-controlled vent 331 are vents with large areas, in order to enable the manual vent 321 and the machine-controlled vent 331 to be associated with the piston rod 410, the first guide portion 322 and the second guide portion 332 are arranged at the manual vent 321 and the machine-controlled vent 331 respectively, and the piston rod 410 is arranged to ascend and descend through the first guide portion 322 and the second guide portion 332, so that the first guide portion 322 and the second guide portion 332 not only guide the piston rod 410 to ascend and descend, but also improve the stability of the piston rod 410 and reduce the shaking of the piston rod 410.

[0176] In addition, in order to prevent the piston rod 410 from being pushed out of the rack 200 by the second elastic element 420, the step portion 411 is arranged on the piston rod 410, and since the cross-sectional area of the step portion 411 is larger than that of the second guide portion 332, when the step portion 411 reaches the second guide portion 332, the step portion 411 is limited by the second guide portion 332, so that the piston rod 410 cannot continue to ascend, and the piston rod 410 is ensured to be in the air path switching device 400.

[0177] Please refer to Figures 9 to 11Further, the manual vent 321 is provided with a first sealing protrusion 323 around the manual vent 321 on one side of the sealing film 430, the machine-controlled vent 331 is provided with a second sealing protrusion 333 around the machine-controlled vent 331 on one side of the sealing film 430, and the cross-sectional area of the sealing film 430 is greater than the area surrounded by the first sealing protrusion 323 and the area surrounded by the second sealing protrusion 333.

[0178] Specifically, the sealing film 430 has a certain softness, and when it seals the manual vent 321 and the machine-controlled vent 331, it can deform to form a close fit with the first sealing protrusion 323 and the second sealing protrusion 333, thereby improving the sealing effect of the manual vent and the machine-controlled vent 331 and avoiding the problem of air mixing between the manual branch 320 and the machine-controlled branch 330.

[0179] Please refer to Figures 9 to 11 Further, the bottom wall of the breathing circuit is provided with a mounting portion 324, the bottom end of the piston rod 410 is movably embedded in the mounting portion 324, and the mounting portion 324 is provided with a positioning column, and the bottom end of the piston rod 410 is provided with a receiving groove, one end of the second elastic element 420 is embedded in the receiving groove, and the other end is sleeved on the positioning column.

[0180] Specifically, the mounting portion 324 is substantially cylindrical, and it is on the bottom wall where the manual branch 320 is located and extends upward, the receiving groove extends along the length direction of the piston rod 410, the second elastic element 420 is positioned by the positioning column and the mounting portion 324, and is stably installed by the receiving groove and the internal space of the mounting portion 324. The mounting portion 324 not only can install the second elastic element 420, but also can install the piston rod 410 and provide guidance for the lifting of the piston rod 410.

[0181] In this way, the anesthesia machine 1000 stably guides the lifting of the piston rod 410 through the upper (cover 210), middle (first guide portion 322 and second guide portion 332), and lower (mounting portion 324) three-part structure, thereby realizing stable control switching between the manual state and the machine-controlled state of the breathing circuit.

[0182] In the description of the present specification, the description referring to the terms "embodiment one", "embodiment two", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0183] The above merely preferred embodiments of the present application are not used to limit the present application, any modification, equivalent replacement and improvement etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A manual machine control switching device for an anaesthesia machine, characterised in that, The anesthesia machine comprises: a mounting base arranged on a machine frame of the anesthesia machine; a lever mechanism arranged on the mounting base, the lever mechanism being rotatable relative to the mounting base between a first rotation position and a second rotation position to trigger control of the anesthesia machine to switch between a manual state and a machine-controlled state; and a swing lever assembly having one end rotatably connected to the lever mechanism and the other end rotatably connected to the machine frame of the anesthesia machine, the lever mechanism and the swing lever assembly being synchronously rotatable; wherein when the lever mechanism is located at an intermediate position between the first rotation position and the second rotation position, the first rotation position and the intermediate position, and the second rotation position and the intermediate position, respectively, the swing lever assembly drives the lever mechanism to rotate towards the first rotation position or the second rotation position, the first rotation position, and the second rotation position, respectively; the swing lever assembly comprises: a swing lever comprising a first end and a second end connected to the first end; a first elastic element sleeved on the swing lever, one end of the first elastic element abutting against the first end; a ball rotatably arranged on the first end, the ball being rotatably connected to the lever mechanism; and a connecting rod having one end movably connected to the second end and the other end rotatably connected to the machine frame of the anesthesia machine, the other end of the first elastic element abutting against the connecting rod, the swing lever being extendable or retractable relative to the connecting rod to compress or elongate the first elastic element to adjust the force applied to the first end; the lever mechanism comprises: a lever assembly arranged in cooperation with the mounting base, the swing lever assembly being rotatably connected to the lever assembly, the lever assembly being rotatable relative to the mounting base between the first rotation position and the second rotation position, the mounting base and the lever assembly jointly forming a mounting cavity, the bottom of the mounting base being provided with an opening in communication with the mounting cavity. the lever mechanism further comprises:

2. The manual motorized switching device of claim 1, wherein, a movable element being liftable between a first lifting position and a second lifting position in the mounting cavity and being drivingly connected to both the mounting base and the lever mechanism, the lever assembly being capable of driving the movable element to lift between the first lifting position and the second lifting position when the lever assembly rotates between the first rotation position and the second rotation position, so as to be accommodated in the mounting cavity or to extend out of the opening and trigger control of the anesthesia machine to switch between the manual state and the machine-controlled state. the lever assembly comprises:

3. The manual motorized switching device of claim 2, wherein, a lever body arranged in cooperation with the mounting base, the lever body being drivingly connected to the movable element and being rotatably connected to the swing lever assembly, the top of the lever body being provided with an activity hole and a label slot, the top end of the movable element being liftable and embedded in the activity hole; a lever handle extending outwardly from the surface of the lever body; and ​ A first limiting arc wall extends from the lever body to the mounting base, the first limiting arc wall and the peripheral wall of the lever body are spaced to form a rotating groove, the mounting base is provided with a rotating arc wall, the rotating arc wall is rotatably embedded in the rotating groove, the outer surface of the first limiting arc wall is provided with a mounting groove, one end of the swing lever assembly is rotatably embedded in the mounting groove.

4. The manual motorized switching device of claim 3, wherein, The first limiting arc wall is provided with a limiting portion protruding towards the mounting base, and the mounting groove is distributed on the first limiting arc wall and the limiting portion. The mounting base is further provided with a second limiting arc wall extending towards the lever body, the opening is located at the bottom of the second limiting arc wall, the bottom of the first limiting arc wall is in sliding contact with the top of the second limiting arc wall, and the limiting portion can rotate between the two ends of the second limiting arc wall.

5. The manual motorized switching device of claim 3, wherein, The manual machine control switching device further comprises a lever cover covering the lever body and the mounting base, the top and bottom of the lever cover are respectively provided with a fan-shaped opening and an avoiding opening, the lever handle extends out of the fan-shaped opening, and the two side limit positions of the fan-shaped opening correspond to the first rotating position and the second rotating position respectively, and the swing lever assembly extends into the avoiding opening and can swing in the avoiding opening.

6. The manual motorized switching device of claim 4, wherein, The movable part comprises: A limiting column embedded in the movable hole, when the lever body is rotated, the limiting column can be lifted relative to the lever body through the movable hole; and A spiral column connected with the limiting column and in transmission connection with the mounting base, when the lever assembly is rotated, the limiting column can be rotated, and at the same time, the spiral column can be rotated and lifted in the mounting base, when the lever assembly is located at the first rotating position, the spiral column is accommodated in the mounting cavity and located at the first lifting position, and when the lever assembly is located at the second rotating position, the spiral column extends out of the opening and is located at the second lifting position.

7. The manual motorized switching device of claim 6, wherein, The side surface of the spiral column is provided with a spiral guide groove, the spiral guide groove is spirally distributed along the length direction of the spiral column, the second limiting arc wall is provided with a guide column, and the guide column is movably embedded in the spiral guide groove; and / or the second limiting arc wall is further provided with a plurality of limiting ribs, the limiting ribs are distributed along the height direction of the second limiting arc wall and in contact with the surface of the spiral column.

8. The manual motorized switching apparatus according to claim 1, wherein, The manual machine control switching device further comprises a sensing device provided on the rack of the anesthesia machine and located on the side of the swing lever assembly close to the first rotating position and / or the second rotating position, when the lever mechanism is rotated to the first rotating position and / or the second rotating position, the sensing device is triggered by the swing lever assembly to generate a sensing.

9. An anaesthesia machine characterised in that, It comprises: A rack; A breathing circuit provided on the rack, the breathing circuit comprises a mixed gas branch, a manual branch and a machine control branch, a manual ventilation port is arranged between the mixed gas branch and the manual branch, and a machine control ventilation port is arranged between the machine control branch and the mixed gas branch; A gas path switching device arranged in the breathing circuit, the gas path switching device being movable relative to the manual ventilation port and the machine-controlled ventilation port to control opening and closing of the manual ventilation port and the machine-controlled ventilation port, thereby controlling switching of the gas path between the mixed gas branch and the manual branch and the machine-controlled branch; and The manual-machine-controlled switching device according to any one of claims 1 to 8, the manual-machine-controlled switching device being arranged on the machine frame and corresponding to the gas path switching device; When the dial lever mechanism is rotated to the first rotation position, the gas path switching device is triggered to open the manual ventilation port and close the machine-controlled ventilation port, and the anesthesia machine is switched to a manual state; when the dial lever mechanism is rotated to the second rotation position, the gas path switching device is triggered to open the machine-controlled ventilation port and close the manual ventilation port, and the anesthesia machine is switched to a machine-controlled state.

10. An anaesthesia machine as claimed in claim 9, characterised in that, The gas path switching device comprises: A piston rod, a top end of the piston rod corresponding to the manual-machine-controlled switching device, and the piston rod being movably arranged through the manual ventilation port and the machine-controlled ventilation port; A second elastic element arranged on a bottom wall of the breathing circuit, one end of the second elastic element being connected to the bottom wall of the breathing circuit, and the other end being connected to a bottom end of the piston rod, the second elastic element being in a compressed state when the dial lever mechanism is in the first rotation position; A sealing film sleeved on the piston rod and located between the manual ventilation port and the machine-controlled ventilation port, the piston rod being capable of moving the sealing film relative to the manual ventilation port and the machine-controlled ventilation port to open the manual ventilation port and block the machine-controlled ventilation port, or to open the machine-controlled ventilation port and block the manual ventilation port; and A sealing element sleeved on the piston rod and blocking a communication port between the breathing circuit and the machine frame, the sealing element protruding towards the sealing film.

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