Control switch, anesthesia machine ventilation system and anesthesia machine

Abstract

An embodiment of the present invention discloses a control switch, an anesthesia machine ventilation system and an anesthesia machine, including a base, a switch knob and a detector. The switch knob is installed on the base. The switch knob has a handle and a rotating part. The rotating part has a first limiting part and a second limiting part. The first limiting part and the second limiting part respectively correspond to two extreme positions of the handle relative to the base. The detector is installed on the base or the rotating part. After the rotating part rotates to the first limiting part or the second limiting part, it cooperates with the detector to generate and output a detection signal.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a control switch, an anesthesia machine ventilation system, and an anesthesia machine. Background Art

[0002] During a surgical operation, a patient usually needs to be anesthetized. Throughout the anesthesia process, an anesthesiologist needs to manually ventilate and mechanically control ventilation of the anesthesia machine in different situations, and ensure the safety and reliability of the switching.

[0003] The switching valve between the manual branch and the mechanical control branch is an important component in the anesthesia machine ventilation system.

[0004] Currently, the switching valves used in anesthesia machines are usually two-way three-way valve structures with pure mechanical operations. Manual operations are required during the switching process, which not only fails to achieve an automatic self-check function, but also poses certain risks in terms of safety and reliability in the design of some switching valves. Summary of the Invention

[0005] The present application provides a control switch, an anesthesia machine ventilation system, and an anesthesia machine, which can achieve automatic switching between the manual branch and the mechanical control branch, ensure the safety and reliability of the switching between the manual branch and the mechanical control branch, and provide functional support for the automatic self-check of the anesthesia machine.

[0006] According to a first aspect of the present application, a control switch is provided, including:

[0007] A base;

[0008] A switch knob, mounted on the base, the switch knob having a handle and a rotating part, the rotating part having a first limiting part and a second limiting part, the first limiting part and the second limiting part respectively corresponding to two extreme positions of the handle relative to the base;

[0009] A detector, mounted on the base or the rotating part, when the rotating part rotates to the first limiting part or the second limiting part, the detector generates and outputs a detection signal.

[0010] In the control switch of the present application, the control switch is signal-connected to a valve assembly in the anesthesia machine ventilation system, the valve assembly includes a control valve and a driver, the detector is signal-connected to the driver, and controls the control valve to drive the gas path switching in the anesthesia machine ventilation system.

[0011] In the control switch of the present application, the anesthesia machine ventilation system includes a mechanical control branch, a manual branch, and a breathing circuit, the control valve is respectively connected to the mechanical control branch, the manual branch, and the breathing circuit, and controls the breathing circuit to communicate with the mechanical control branch or the manual branch.

[0012] In the control switch of the present application, the detector includes:

[0013] a detection unit; and

[0014] a trigger member installed on the base or the rotating part, and the trigger member is in transmission connection with the switch knob;

[0015] Wherein, when the trigger member is connected to the first limiting part or the second limiting part, the trigger member triggers the detection unit to generate a detection signal and outputs the detection signal.

[0016] In the control switch of the present application, the detection signal includes a first detection signal and a second detection signal, and the detection unit includes:

[0017] a first travel switch, when the trigger member is connected to the first limiting part of the switch knob, the trigger member is connected to the first travel switch, and the first travel switch generates the first detection signal and outputs the first detection signal; or

[0018] a second travel switch, when the trigger member is connected to the second limiting part of the switch knob, the trigger member is connected to the second travel switch, and the second travel switch generates the second detection signal and outputs the second detection signal.

[0019] In the control switch of the present application, the base includes:

[0020] a seat body provided with a rotating groove, a movable hole and rotating shafts connected to both sides of the rotating groove, the movable hole is arranged on one side of the rotating shaft away from the opening of the rotating groove, the rotating part is rotatably installed in the rotating groove through the rotating shaft, and one end of the trigger member passes through the movable hole and is in transmission connection with the rotating part;

[0021] a fixing plate installed on the seat body, the other end of the trigger member passes through the fixing plate, and both the first travel switch and / or the second travel switch are installed on the fixing plate and located on both sides of the trigger member.

[0022] In the control switch of the present application, the base further includes:

[0023] a limiting member installed on the rotating shaft, and the limiting member cooperates with the rotating part to limit the rotating part on the first limiting part or the second limiting part.

[0024] In the control switch of the present application, the limiting member includes:

[0025] The limiting bushing is provided with a limiting portion and a guiding portion. The limiting bushing moves axially along the rotating shaft through the guiding portion. The limiting portion cooperates with the rotating portion so that the rotating portion is on the first limiting portion or the second limiting portion.

[0026] The first elastic member has one end abutted against one end of the limiting bushing away from the rotating portion, and the other end abutted against the seat body. In the control switch of the present application, the limiting portion is at least one tooth portion provided on the limiting bushing, and at least two tooth grooves matching the tooth portion are provided on the rotating portion. The at least two tooth grooves are spaced apart on the rotating portion.

[0027] In the control switch of the present application, the guiding portion is a guiding groove provided on the limiting bushing. The seat body is provided with a rotating hole, and a guiding column is provided at the position of the rotating hole where the limiting bushing is installed. The limiting bushing is installed in the rotating hole through the rotating shaft, and the guiding groove is connected with the guiding column in a matching manner.

[0028] In the control switch of the present application, the guiding portion is a guiding column provided on the limiting bushing. The seat body is provided with a rotating hole, and a guiding groove is provided at the position of the rotating hole where the limiting bushing is installed. The limiting bushing is installed in the rotating hole through the rotating shaft, and the guiding groove is connected with the guiding column in a matching manner.

[0029] In the control switch of the present application, the seat body is provided with a rotating shaft hole on the side opposite to the rotating groove and the rotating hole. The seat body further includes:

[0030] A fixing portion, one end of the rotating shaft is rotatably installed on the rotating shaft hole, the other end of the rotating shaft is fixed in the rotating hole through the fixing portion, one end of the first elastic member is abutted against the limiting bushing, and the other end of the first elastic member is abutted against the fixing portion.

[0031] In the control switch of the present application, the fixing plate has an L-shaped structure. The first travel switch and the second travel switch are both installed on the horizontal end face of the fixing plate, and the other end of the triggering member can movably pass through the vertical end face of the fixing plate.

[0032] In the control switch of the present application, the triggering member includes:

[0033] A driving shaft, which is in transmission connection with the rotating portion;

[0034] A driving block, which is arranged on the driving shaft. When the rotating portion is at the first limiting portion, the driving block is connected with the first travel switch; when the rotating portion is at the second limiting portion, the driving block is connected with the second travel switch.

[0035] In the control switch of the present application, a shaft platform is provided on the driving shaft, the driving block is sleeved on the driving shaft, and the trigger member further includes:

[0036] A second elastic member, one end of the second elastic member abuts against one end of the driving block away from the shaft platform, and the other end of the second elastic member abuts against the vertical end face of the fixing plate.

[0037] In the control switch of the present application, the driving block includes a first driving block, a second driving block and a third driving block having a driving shaft hole. The first driving block and the second driving block are connected to each other through the third driving block to form an H-shaped structure, and the third driving block is movably mounted on the driving shaft through the driving shaft hole.

[0038] In the control switch of the present application, an outwardly convex arc-shaped protrusion is provided on the end face of the rotating portion facing the trigger member. The arc-shaped protrusion is arranged along the rotation direction of the rotating portion, and the height of the arc-shaped protrusion gradually decreases or increases from one end to the other end. The first limiting portion and the second limiting portion are respectively arranged at both ends of the arc-shaped protrusion.

[0039] In the control switch of the present application, an arc-shaped retaining piece is provided at the connection between the rotating portion and the handle. The arc-shaped retaining piece rotates around the base with the connection position between the rotating portion and the base as a fulcrum.

[0040] In the control switch of the present application, a plurality of reinforcing ribs are provided on the arc-shaped retaining piece, and the reinforcing ribs are connected between the arc-shaped retaining piece and the rotating portion.

[0041] According to the second aspect of the present application, the present application further provides an anesthesia machine ventilation system, including a machine control branch, a manual branch, a breathing circuit and a control system. The control system includes a valve assembly and the above control switch. The valve assembly includes a control valve and a driver. The control valve has two inlet ends and one outlet end. The machine control branch and the manual branch are respectively connected to the two inlet ends, and the breathing circuit is connected to the outlet end. The driver connects the breathing circuit to the machine control branch or the manual branch according to the detector signal output by the control switch.

[0042] According to the third aspect of the present application, the present application further provides an anesthesia machine, including an anesthesia machine main unit and the above anesthesia machine ventilation system, and the anesthesia machine ventilation system is integrated into the anesthesia machine main unit.

[0043] The technical solutions provided by the embodiments of the present application may include the following beneficial effects: The present application designs a control switch, an anesthesia machine ventilation system, and an anesthesia machine. Since the switch knob has a handle and a rotating part, the operation mode of manually dialing the handle in the traditional way can be retained, which conforms to the operation habits of the operator. At the same time, when the handle reaches the limit position relative to the base, the detector can cooperate with the corresponding first and second limit parts on the rotating part to output a detection signal. In this way, not only can the automatic switching between the manual branch and the machine-controlled branch in the anesthesia machine ventilation system be realized, but also the safety and reliability of the switching between the manual branch and the machine-controlled branch are ensured, avoiding the situation that the handle is not dialed in place, which affects the working performance of the anesthesia machine. The operation is simple and efficient.

[0044] It should be understood that the above general description and subsequent detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0046] Figure 1 It is a schematic diagram of an anesthesia machine ventilation system provided by an embodiment of the present invention;

[0047] Figure 2 is Figure 1 a schematic structural diagram of the control switch in

[0048] Figure 3 is Figure 1 a schematic structural diagram of the control switch from another angle in

[0049] Figure 4 is Figure 1 a partial schematic diagram of the control switch in

[0050] Figure 5 is Figure 1 a schematic cross-sectional diagram of the control switch in

[0051] Figure 6 is Figure 1 a schematic exploded view of the control switch in

[0052] Figure 7 is Figure 1 a schematic structural diagram of the base body in

[0053] Figure 8 is Figure 1 a partial exploded view of the control switch in

[0054] Figure 9 is Figure 1 a schematic structural diagram of the switch knob in

[0055] Figure 10 is Figure 1 a schematic diagram of the switch knob in another angle in

[0056] Figure 11 is Figure 1 a schematic diagram of the switch knob in another angle in

[0057] Figure 12 is Figure 1 a partial exploded schematic diagram of the control switch in

[0058] Figure 13 is Figure 1 an exploded schematic diagram of the fixing plate in

[0059] Figure 14 is Figure 1 a schematic diagram of the limiting member and the rotating shaft in

[0060] Figure 15 is Figure 1 a schematic structural diagram of the limiting shaft sleeve in

[0061] Figure 16 is Figure 1 a schematic structural diagram of the trigger member in

[0062] Figure 17 is Figure 1 a schematic structural diagram of the first travel switch in

[0063] Figure 18 is Figure 1 a schematic structural diagram of the second travel switch in

[0064] Explanation of reference numerals:

[0065] 100, control switch; 101, valve assembly; 1011, driver; 1012, control valve;

[0066] 10. Switch knob; 11. Rotating part; 111. Arc-shaped protrusion; 111a. First limiting part; 111b. Second limiting part; 113. Tooth groove; 114. Reinforcing rib; 12. Handle; 20. Base; 21. Seat body; 211. Rotating groove; 212. Rotating shaft hole; 213. Rotating hole; 214. Guide post; 215. Seat body notch; 22. Fixed plate; 23. Rotating shaft; 24. Limiting shaft sleeve; 241. Tooth part; 242. Guide groove; 243. Shaft sleeve through hole; 25. First elastic part; 251. Fixed part; 26. Rotating shaft gasket; 27. Snap ring; 30. Detector; 31. Detection unit; 311. First travel switch; 3111. First screw; 312. Second travel switch; 3121. Second screw; 32. Trigger part; 321. Driving shaft; 3211. First section of driving shaft; 3212. Axle platform; 3213. Second driving shaft; 322. Driving block; 3221. First driving block; 3222. Second driving block; 3223. Third driving block; 323. Second elastic part;

[0067] 200. Machine control branch circuit;

[0068] 300. Manual branch circuit;

[0069] 400. Breathing circuit. Detailed implementation manners

[0070] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0072] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0073] The control switch of the present application belongs to the field of medical equipment manufacturing technology and is used in medical equipment. The medical equipment may include anesthesia machines, analyzers, and ultrasonic equipment, but is not limited to the above-listed ones. In the following embodiments, the control switch is mainly explained by taking the installation in the ventilation system of the anesthesia machine as an example. For other medical equipment, this embodiment will not be repeated here.

[0074] When a patient undergoes a major operation, he or she needs to be anesthetized. Usually, during the entire anesthesia process, the anesthesiologist needs to switch the anesthesia machine between manual ventilation and machine-controlled ventilation in different situations, and ensure the safety and reliability of the switching.

[0075] Among them, the control switch is an important switch in the ventilation system of the anesthesia machine, which can realize the conversion between the manual branch and the machine-controlled branch. In general, the control switch is usually a two-position three-way valve structure with pure mechanical operation. The gas conversion between the manual branch and the machine-controlled branch is realized by a valve stem driving the reciprocating motion of the piston in the cavity. The valve stem realizes reciprocating motion with the help of the eccentric motion of the handle at the upper end of the valve stem, and the handle rotates and moves up and down during the toggling process. Therefore, the handle and the shell that match it are prone to produce large pores, and dust or foreign matter can easily enter the interior, affecting the normal operation of the anesthesia machine. At the same time, the control switch requires manual operation during the switching process, and the self-checking function cannot be realized, and the safety and reliability of the switching cannot be guaranteed.

[0076] like Figures 1 to 18 As shown, according to the first aspect of the present application, the present application provides a control switch 100, including a switch knob 10, a base 20, and a detector 30 mounted on the base 20, wherein the switch knob 10 is rotatably mounted on the base 20. In this embodiment, the switch knob 10 has a handle 12 and a rotating portion 11, and the rotating portion 11 has a first limit portion 111a and a second limit portion 111b, wherein the first limit portion 111a and the second limit portion 111b respectively correspond to two extreme positions of the handle 12 relative to the base 20, when the rotating portion 11 rotates to the first limit portion 111a or the second limit portion 111b, the detector 30 generates a detection signal, and the control switch 100 outputs the detection signal, that is, the relative position of the handle 12 and the base 20.

[0077] After adopting the above technical scheme, since the switch knob 10 can be rotatably installed on the base 20, that is, the rotating part 11 only rotates during the turning process of the handle 12, the matching surface of the rotating part 11 and the base 20 can be designed to be a spherical structure, so as to avoid dust or foreign matter from entering through the gap between the switch knob 10 and the base 20 during the turning process of the handle, causing foreign matter to be stuck, etc., and the traditional manual turning handle operation method can be retained, which will not change the operator's operating habits and conform to the operating interface of the medical device; in addition, the control switch 100 outputs a signal through the detector 30, which can accurately judge the relative position of the handle 12 and the base 20, thereby ensuring the safety and reliability of the control switch 100.

[0078] In addition, the detector 30 can also be installed on the rotating part 11. When the handle 12 drives the rotating part 11 to rotate relative to the base 20, the rotating part 11 drives the detector 30 to rotate relative to the base 20. When the handle 12 is at the two extreme positions of the base 20, the detector 30 cooperates with the base 20 to generate a detection signal, and the control switch 100 outputs the detection signal. This application is not limited to this. In the following embodiments, the detector 30 is mainly explained by taking the installation on the base 20 as an example. As for the detector 30 being installed on the rotating part 11, this embodiment will not be repeated here.

[0079] In an optional embodiment, the control switch 100 is signal-connected to a valve assembly 101 in the ventilation system of an anesthesia machine, the valve assembly 101 includes a control valve 1012 and a driver 1011, and the detector 30 is signal-connected to the driver 1011 for controlling the control valve 1012 to drive the gas circuit switching in the ventilation system of the anesthesia machine.

[0080] Specifically, the control valve 1012 is a manual two-position three-way valve, which is mainly installed in the ventilation system of the anesthesia machine and is used for switching the gas circuit inside the anesthesia machine. The driver 1011 is located on one side of the control valve 1012 and is used to control the control valve 1012 to switch the gas circuit.

[0081] When the handle 12 rotates from one extreme position of the base 20 to another extreme position, the rotating part 11 rotates from the first limit part 111a to the second limit part 111b, or the rotating part 11 rotates from the second limit part 111b to the first limit part 111a, the detector 30 generates a corresponding detection signal, and the control switch 100 outputs the detection signal so as to control the control valve 1012 to switch the gas circuit in the ventilation system of the anesthesia machine through the driver 1011.

[0082] It should be noted that since the control valve 1012 is used in the ventilation system of the anesthesia machine, it not only needs to meet a certain gas flow rate and be able to provide an appropriate amount of mixed anesthetic gas during the patient's surgery, but also needs to supply a certain proportion of oxygen to ensure the patient's normal breathing; and it needs to be removed from the ventilation system of the anesthesia machine for high-temperature disinfection. The present application connects the detector 30 and the driver 1011 signal to control the opening and closing of the control valve 1012, which can effectively solve the problem that the detector 30, the driver 1011 and the control valve 1012 are integrated together, resulting in the control valve 1012 being unable to be sterilized separately at high temperature.

[0083] In an optional embodiment, the ventilation system of the anesthesia machine includes a machine-controlled branch 200, a manual branch 300 and a breathing circuit 400, wherein the control valve 1012 is respectively connected to the machine-controlled branch 200, the manual branch 300 and the breathing circuit 400, and is used to control the connection of the breathing circuit 400 with the machine-controlled branch 200 or the manual branch 300, so that the ventilation mode for the patient can be selected according to demand, that is, the machine-controlled ventilation mode in which the machine-controlled branch 200 is connected to the breathing circuit 400 and the manual ventilation mode in which the manual branch 300 is connected to the breathing circuit 400. In the machine-controlled ventilation mode, the anesthetic mixed gas is automatically provided to the patient according to the pre-set steps of the anesthetic ventilator through the program control of the anesthetic ventilator; in the manual ventilation mode, the operator squeezes the leather bag by hand to allow the anesthetic mixed gas to enter the patient's lungs.

[0084] After adopting the above technical solution, since the valve assembly 101 is connected to the machine-controlled branch 200, the manual branch 300 and the breathing circuit 400, it can not only realize the automatic switching of the manual branch and the machine-controlled branch in the ventilation system of the anesthesia machine, but also ensure the safety and reliability of the switching of the manual branch and the machine-controlled branch, and avoid the handle not being turned into place, affecting the working performance of the anesthesia machine, and the operation is simple and efficient. In addition, the control switch 100 in the present application still retains the traditional manual operation mode of turning the handle, which will not change the operator's operating habits and conforms to the operation interface of the medical device.

[0085] In an optional embodiment, if Figures 1 to 11 As shown, the detector 30 includes a detection unit 31 and a trigger member 32, wherein the trigger member 32 is installed on the base 20, and the trigger member 32 is connected to the switch knob 10 in a transmission connection. When the trigger member 32 is connected to the first limit portion 111a or the second limit portion 111b of the switch knob 10, the trigger member 32 triggers the detection unit 31 to generate a detection signal and output the detection signal, and the driver 1011 drives the control valve 1012 to control the machine-controlled branch 200 to be connected to the breathing circuit 400 or the manual branch 300 to be connected to the breathing circuit 400 according to the output result of the detection signal.

[0086] Specifically, the detection unit 31 sends a detection signal to the CPU processor in the anesthesia machine ventilation system. The CPU processor generates corresponding operation instructions according to the detection signal. When the driver 1011 receives the operation instruction for the machine-controlled ventilation mode, the machine-controlled branch 200 is connected to the breathing circuit 400. When the driver 1011 receives the operation instruction for the manual ventilation mode, the manual branch 300 is connected to the breathing circuit 400, which greatly improves the safety and reliability of the valve assembly 101 in the anesthesia machine ventilation system, and avoids the accident that the two-way three-way valve is in the intermediate state due to the handle 12 not being toggled in place, thus affecting the working performance of the anesthesia machine or causing equipment failure and posing a threat to the patient. Of course, the detection unit 31 can also directly send a detection signal to the driver 1011, and the driver 1011 connects the breathing circuit to the machine-controlled branch or the manual branch according to the received detection signal.

[0087] In an optional embodiment, the detection unit 31 includes a first travel switch 311 and a second travel switch 312. Wherein, when the trigger 32 is connected to the first limit portion 111a of the switch knob 10, the trigger 32 is connected to the first travel switch 311, and the first travel switch 311 generates a first detection signal and outputs the first detection signal. When the trigger 32 is connected to the second limit portion 111b of the switch knob 10, the trigger is connected to the second travel switch 312, and the second travel switch 312 generates a second detection signal and outputs the second detection signal. The first detection signal and the second detection signal constitute the above detection signal. In this way, not only can the two extreme positions of the handle 12 relative to the base 20 be detected respectively, avoiding misjudgment of the detection unit 31 caused by only one travel switch 311, improving the safety and reliability of the control switch 100, but also rapid switching between manual and machine control can be realized, and the operation is simple and convenient.

[0088] Specifically, when the handle 12 drives the rotating part 11 to rotate relative to the base 20, the rotating part 11 rotates from the first limiting part 111a to the second limiting part 111b, or the rotating part 11 rotates from the second limiting part 111b to the first limiting part 111a. The rotating part 11 drives the trigger 32 to move along the axial direction of the trigger 32. When the trigger 32 is connected to the first travel switch 311, the first travel switch 311 generates a first detection signal and outputs the first detection signal; when the trigger 32 is connected to the second travel switch 312, the second travel switch 312 generates a second detection signal and outputs the second detection signal. The CPU processor in the anesthesia machine ventilation system sends a detection signal, and the CPU processor generates a corresponding operation instruction according to the first detection signal or the second detection signal. When the driver 1011 receives the operation instruction of the machine-controlled ventilation mode, it connects the machine-controlled branch 200 to the breathing circuit 400; when the driver 1011 receives the operation instruction of the manual ventilation mode, it connects the manual branch 300 to the breathing circuit 400, which greatly improves the safety and reliability of the valve assembly 101 in the anesthesia machine ventilation system, and avoids the situation that the two-way three-way valve is in the middle state due to the handle 12 not being toggled in place, thus affecting the working performance of the anesthesia machine or causing equipment failures and threatening the patients.

[0089] In addition, the detection unit 31 may also include only one first travel switch 311 or second travel switch 312. For example, at one of the extreme positions of the handle 12 relative to the base 20, the first travel switch 311 or the second travel switch 312 generates a detection signal, and at the other extreme position of the handle 12 relative to the base 20, the first travel switch 311 or the second travel switch 312 does not generate a detection signal. Therefore, the driver 1011 can control the control valve 1012 according to whether the first travel switch 311 or the second travel switch 312 generates a detection signal, so as to be able to switch the gas path in the anesthesia machine ventilation system. In an alternative embodiment, as Figures 1 to 18As shown, the base 20 includes a base body 21 and a fixing plate 22. Among them, a rotating groove 211, a movable hole, and rotating shafts 23 connected to both sides of the rotating groove 211 are provided on the base body 21. The movable hole is arranged on one side of the rotating shaft 23 away from the opening of the rotating groove 211. The rotating part 11 is rotatably installed in the rotating groove 211 through the rotating shafts 23. One end of the triggering part 32 passes through the movable hole and is in transmission connection with the rotating part 11. In this embodiment, a base body notch 215 is provided at the bottom end of the base body 21, the fixing plate 22 is installed on the base body notch 215, the other end of the triggering part 32 passes through the fixing plate 22, and the first travel switch 311 and / or the second travel switch 312 are both installed on the fixing plate 22 and are located on one side or both sides of the triggering part 32, which can not only prevent the operator from accidentally touching the first travel switch 311 and / or the second travel switch 312, but also make the overall structure of the control switch 100 more compact and facilitate the assembly of the control switch 100.

[0090] In an alternative embodiment, the base 20 further includes a limiting member. The limiting member is installed on the rotating shaft 23 and is used to limit the rotating part 11 at the position of the first limiting part 111a or the position of the second limiting part 111b after cooperating with the rotating part 11, so as to prevent the operator from accidentally touching the handle 12 and causing the rotating part 11 to rotate relative to the base 20, thereby causing the CPU processor to misjudge the detection signal sent by the first travel switch 311 or the second travel switch 312.

[0091] Specifically, the limiting member includes a limiting shaft sleeve 24 and a first elastic member 25. The limiting shaft sleeve 24 is provided with a limiting portion and a guiding portion. Among them, the limiting shaft sleeve 24 moves axially along the rotating shaft 23 through the guiding portion, and the limiting portion is used to cooperate with the rotating portion 11 so that the rotating portion 11 can be located on the first limiting portion 111a or the second limiting portion 111b. In this embodiment, one end of the first elastic member 25 abuts against the end of the limiting shaft sleeve 24 away from the rotating portion 11, and the other end of the first elastic member 25 abuts against the seat body 21, so that the limiting shaft sleeve 24 always abuts against the rotating portion 11. That is, when the handle 12 drives the rotating portion 11 to rotate, the rotating portion 11 pushes the limiting portion on the limiting shaft sleeve 24, so that the limiting shaft sleeve 24 moves axially along the guiding portion of the rotating shaft 23. When the handle 12 is in two extreme positions relative to the base 20, under the elastic force of the first elastic member 25, the limiting portion of the limiting shaft sleeve 24 is clamped in the recess of the rotating portion 11 to limit the relative rotation of the handle 12 and the base 20 without external force. In an alternative embodiment, the limiting portion is at least one tooth portion 241 provided on the limiting shaft sleeve 24, and at least two tooth grooves 113 matching the tooth portion 241 are provided on the rotating portion 11. The two tooth grooves 113 are spaced apart on the rotating portion 11, so that when the handle 12 rotates to one of the extreme positions, the tooth portion 241 can be connected to at least one tooth groove 113 to prevent the handle 12 from rotating relative to the base 20 without external force.

[0092] In this embodiment, the number of the tooth portions 241 is two, and the two tooth portions 241 are symmetrically arranged on the limiting shaft sleeve 24. The number of the tooth grooves 113 is four. When the handle 12 rotates to one of the extreme positions, the two tooth portions 241 can be connected to two of the tooth grooves 113.

[0093] Specifically, every two tooth grooves 113 form a group of limiting portions. One group of limiting portions corresponds to the first limiting portion 111a, and the other group of limiting portions corresponds to the second limiting portion 111b. That is, after the rotating portion 11 rotates relative to the limiting shaft sleeve 24, when the triggering member 32 is connected to the first limiting portion 111a, the tooth portion 241 is clamped on one group of limiting portions; when the triggering member 32 is connected to the second limiting portion 111b, the tooth portion 241 is clamped on the other group of limiting portions, so that the handle 12 can be restricted to two extreme positions relative to the base 20, avoiding the relative rotation of the handle 12 and the base 20 without external force. At the same time, when the handle 12 is in two relative extreme positions of the base 20, the triggering member 32 can trigger the first limiting portion 111a or the second limiting portion 111b to send a detection signal, so that the CPU processor can generate corresponding operation instructions according to the detection signal and control the driver 1011 to drive the control valve 1012 to perform the switching between manual control and machine control.

[0094] In an alternative embodiment, the guiding portion is a guiding groove 242 provided on the limiting bushing 24. Wherein, a rotating hole 213 is provided on the seat body 21, and a guiding post 214 is provided at the position of the rotating hole 213 where the limiting bushing 24 is installed. An axial hole 243 is provided on the limiting bushing 24. After the rotating shaft 23 passes through the axial hole 243, the limiting bushing 24 is installed in the rotating hole 213, and the guiding groove 242 can be cooperatively connected with the guiding post 214, so that the limiting bushing 24 can move along the axial direction of the rotating shaft 23 of the guiding portion. The structure is simple but practical.

[0095] In addition, the guiding portion can also be a guiding post provided on the limiting bushing 24, and a guiding groove matching the guiding post is provided on the rotating hole 213. When the limiting bushing 24 is installed in the rotating hole 213 through the rotating shaft 23, the guiding groove is cooperatively connected with the guiding post. The present application does not impose any restrictions.

[0096] In an alternative embodiment, the seat body 21 further includes a fixing portion 251. The seat body 21 is provided with a rotating shaft hole 212 on the side opposite to the rotating groove 211 and the rotating hole 213. In this embodiment, one end of the rotating shaft 23 is rotatably installed on the rotating shaft hole 212, and the other end of the rotating shaft 23 is fixed in the rotating hole 213 through the fixing portion 251. Wherein, one end of the first elastic member 25 abuts against the limiting bushing 24, and the other end of the first elastic member 25 abuts against the fixing portion 251.

[0097] Specifically, both ends of the rotating shaft 23 are restricted on the rotating shaft hole 212 and the fixing portion 251 respectively by snap rings 27. Wherein, a rotating shaft gasket 26 is further provided between the snap ring 27 and the rotating shaft hole 212 to restrict the rotating portion 11 in the rotating groove 211.

[0098] In an alternative embodiment, the fixing plate 22 has an L-shaped structure. Wherein, both the first travel switch 311 and the second travel switch 312 are installed on the horizontal end surface of the fixing plate 22, and the other end of the triggering member 32 can movably pass through the vertical end surface of the fixing plate 22.

[0099] Specifically, the horizontal end surface of the fixing plate 22 refers to the end surface of the fixing plate 22 that is substantially perpendicular to the plane where the rotating portion 11 is located, and the horizontal end surface of the fixing plate 22 refers to the end surface of the fixing plate 22 that is substantially parallel to the plane where the rotating portion 11 is located. After adopting the above technical solutions, it is not only convenient for the processing and manufacturing of the control switch 100, but also convenient for the assembly of the control switch 100.

[0100] In an alternative embodiment, the trigger 32 includes a drive shaft 321 and a drive block 322. The drive shaft 321 is in transmission connection with the rotating part 11. The drive block 322 is arranged on the drive shaft 321. When the rotating part 11 rotates to the position of the first limit part 111a, the drive block 322 is connected to the first travel switch 311. When the rotating part rotates to the position of the second limit part 111b, the drive block 322 is connected to the second travel switch 312.

[0101] Specifically, the drive block 322 includes a first drive block 3221, a second drive block 3222, and a third drive block 3223 having a drive shaft hole. The first drive block 3221 and the second drive block 3222 are connected to each other through the third drive block 3223 to form an H-shaped structure. The third drive block 3223 is movably mounted on the drive shaft 321 through the drive shaft hole. When the rotating part 11 drives the drive shaft 321 to move along the axial direction of the drive shaft 321, the drive shaft 321 drives the first drive block 3221 and the second drive block 3222 to move along the axial direction of the drive shaft 321, so that when the rotating part 11 rotates to the position of the second limit part 111b, the first drive block 3221 can be connected to the second travel switch 312, and when the rotating part 11 rotates to the position of the first limit part 111a, the second drive block 3222 is connected to the first travel switch 311.

[0102] It should be noted that the drive block 322 can be integrally formed with the drive shaft 321, or the drive block 322 can be mounted on the drive shaft 321, which is not limited in this application.

[0103] In an alternative embodiment, the trigger 32 further includes a second elastic member 323. An axle platform 3212 is provided on the drive shaft 321. The axle platform 3212 divides the drive shaft 321 into a first-stage drive shaft 3211 and a second-stage drive shaft 3213. The first-stage drive shaft 3211 is in contact with the rotating part 11. The second elastic member 323 and the third drive block 3223 are both sleeved on the second-stage drive shaft 3213. One end of the second elastic member 323 abuts against one end of the third drive block 3223 facing away from the axle platform 3212, and the other end of the second elastic member 323 abuts against the vertical end face of the fixed plate 22.

[0104] When the handle 12 drives the rotating part 11 to rotate, since the drive shaft 321 is in transmission connection with the rotating part 11, the drive shaft 321 moves along the axial direction of the drive shaft 321 under the drive of the rotating part 11, and the drive block 322 moves along the axial direction of the drive shaft 321 under the push of the axle platform 3212, so that the drive block 322 can be connected to the first travel switch 311 or the second travel switch 312 to generate corresponding detection signals.

[0105] In an alternative embodiment, an outwardly convex arc-shaped protrusion 111 is provided on one end surface of the rotating part 11 facing the trigger 32. Among them, the arc-shaped protrusion 111 is arranged along the rotation direction of the rotating part 11, and the height of the arc-shaped protrusion 111 gradually decreases or increases from one end to the other end. In this embodiment, the first limiting part 111a and the second limiting part 111b are respectively arranged at both ends of the arc-shaped protrusion 111, and the stroke of the arc-shaped protrusion 111 corresponds to the rotation of the handle 12 from one side of the base 20 to the other side of the base 20, so that the first limiting part 111a and the second limiting part 111b can detect the two extreme positions of the handle 12 relative to the base 20 in real time.

[0106] In an alternative embodiment, an arc-shaped flap 112 is provided at the connection between the rotating part 11 and the handle 12. The arc-shaped flap 112 rotates around the base 20 with the connection position between the rotating part 11 and the base 20 as the fulcrum. When the control switch 100 is installed on the housing, the arc-shaped flap 112 can always maintain the pore size with the housing during the rotation process, preventing dust or foreign objects from entering the interior of the control switch 100 through the pores and causing malfunctions such as jamming of the control switch 100, thereby affecting the normal operation of the anesthesia machine; in addition, the arc-shaped flap 112 also has a waterproof effect. When liquid drops on the arc-shaped flap 112, the liquid can flow out from the rotating groove 211 along the arc-shaped flap 112, preventing the liquid from entering the rotating part 11 through the arc-shaped flap 112 and affecting the service life of other components of the control switch 100.

[0107] In an alternative embodiment, a plurality of reinforcing ribs 114 are provided on the arc-shaped flap 112. The reinforcing ribs 114 extend from the rotating part 11 to the arc-shaped flap 112, which can not only improve the strength of the rotating part 11, but also improve the strength of the arc-shaped flap 112, and also reduce the manufacturing cost of the rotating part 11.

[0108] In an alternative embodiment, the first travel switch 311 is installed on the seat body 21 through the first screw 3111, and the second travel switch 312 is installed on the seat body 21 through the second screw 3121. The fixing plate 22 covers the first travel switch 311 and the second travel switch 312, which can play a role in protecting the first travel switch 311 and the second travel switch 312.

[0109] Such as Figures 1 to 18As shown in the figure, according to the second aspect of the present application, the present application further provides an anesthesia machine ventilation system, including a machine-controlled branch 200, a manual branch 300, a breathing circuit 400, and a control system. Among them, the control system includes a valve assembly 101 and the above-mentioned control switch 100. The valve assembly 101 includes a control valve 1012 and a driver 1011. The control valve 1012 has two inlet ends and one outlet end. The machine-controlled branch 200 and the manual branch 300 are respectively connected to the two inlet ends, and the breathing circuit 400 is connected to the outlet end. The driver 1011 is signal-connected to the detector 30 on the control switch 100 through a processor in the anesthesia machine, and connects the breathing circuit 400 to the machine-controlled branch 200 or to the manual branch 300 according to the detection signal. Of course, the driver 1011 can also be directly signal-connected to the detector 30 on the control switch 100, and connects the breathing circuit 400 to the machine-controlled branch 200 or to the manual branch 300 according to the detection signal.

[0110] As Figures 1 to 18 As shown in the figure, according to the third aspect of the present application, the present application further provides an anesthesia machine, including an anesthesia machine main unit and the above-mentioned anesthesia machine ventilation system. Among them, the anesthesia machine ventilation system is integrated into the anesthesia machine main unit.

[0111] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0112] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0113] The foregoing disclosure provides many different embodiments or examples for implementing the different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0114] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0115] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control switch, characterized in that, Comprising: Base; A switch knob, mounted on the base, the switch knob having a handle and a rotating part, the rotating part having a first limiting part and a second limiting part, the first limiting part and the second limiting part respectively corresponding to two extreme positions of the handle relative to the base; A detector, mounted on the base or the rotating part, when the rotating part rotates to the first limiting part or the second limiting part, the detector generates and outputs a detection signal; Wherein, the control switch is used for signal connection with a valve assembly in the anesthesia machine ventilation system, the valve assembly includes a control valve and a driver, and the detector is signal-connected to the driver to control the control valve to drive the gas path switching in the anesthesia machine ventilation system.

2. The control switch according to claim 1, wherein The anesthesia machine ventilation system includes a machine-controlled branch, a manual branch and a breathing circuit, the control valve is respectively connected to the machine-controlled branch, the manual branch and the breathing circuit, and controls the breathing circuit to communicate with the machine-controlled branch or the manual branch.

3. The control switch according to claim 1, characterized in that, The detector includes: A detection unit; and A trigger, mounted on the base or the rotating part, the trigger is in transmission connection with the switch knob or the base; Wherein, when the trigger is connected to the first limiting part or the second limiting part, the trigger triggers the detection unit to generate a detection signal and output the detection signal.

4. The control switch according to claim 3, characterized in that, The detection signal includes a first detection signal and a second detection signal, and the detection unit includes: A first travel switch, when the trigger is connected to the first limiting part of the switch knob, the trigger is connected to the first travel switch, and the first travel switch generates and outputs the first detection signal; or A second travel switch, when the trigger is connected to the second limiting part of the switch knob, the trigger is connected to the second travel switch, and the second travel switch generates and outputs the second detection signal.

5. The control switch according to claim 4, characterized in that, The base includes: A seat body, provided with a rotating groove, a movable hole and rotating shafts connected to both sides of the rotating groove, the movable hole is arranged on one side of the rotating shaft away from the opening of the rotating groove, the rotating part is rotatably installed in the rotating groove through the rotating shaft, and one end of the trigger passes through the movable hole and is in transmission connection with the rotating part; A fixing plate, mounted on the seat body, the other end of the trigger passes through the fixing plate, and the first travel switch and / or the second travel switch are mounted on the fixing plate and on one side or both sides of the trigger.

6. The control switch according to claim 5, characterized in that, The base further includes: A limiting member, mounted on the rotating shaft, the limiting member cooperates with the rotating part to limit the rotating part at the first limiting part or the second limiting part.

7. The control switch according to claim 6, wherein The limiting member includes: A limiting shaft sleeve, provided with a limiting part and a guiding part, the limiting shaft sleeve moves axially along the rotating shaft through the guiding part, and the limiting part cooperates with the rotating part to make the rotating part be in the first limiting part or the second limiting part; A first elastic member, one end of which abuts against the end of the limiting shaft sleeve away from the rotating part, and the other end abuts against the seat body.

8. The control switch according to claim 7, characterized in that, The limiting part is at least one tooth part arranged on the limiting bushing, and two tooth grooves matching the tooth part are arranged on the rotating part, and the two tooth grooves are arranged on the rotating part at intervals.

9. The control switch according to claim 7, wherein The guiding part is a guiding groove arranged on the limiting bushing, a rotating hole is arranged on the seat body, a guiding post is arranged at the position of the rotating hole where the limiting bushing is installed, the limiting bushing is installed in the rotating hole through the rotating shaft, and the guiding groove is in fit connection with the guiding post.

10. The control switch according to claim 7, characterized in that, The guiding part is a guiding post arranged on the limiting bushing, a rotating hole is arranged on the seat body, a guiding groove is arranged at the position of the rotating hole where the limiting bushing is installed, the limiting bushing is installed in the rotating hole through the rotating shaft, and the guiding groove is in fit connection with the guiding post.

11. The control switch according to claim 9, characterized in that, The seat body is provided with a rotating shaft hole on the side opposite to the rotating groove and the rotating hole, and the seat body further includes: A fixing part, one end of the rotating shaft is rotatably installed on the rotating shaft hole, the other end of the rotating shaft is fixed in the rotating hole through the fixing part, one end of the first elastic part abuts against the limiting bushing, and the other end of the first elastic part abuts against the fixing part.

12. The control switch according to claim 5, wherein The fixing plate has an L-shaped structure, the first travel switch and the second travel switch are both installed on the horizontal end face of the fixing plate, and the other end of the triggering part can movably pass through the vertical end face of the fixing plate.

13. The control switch according to claim 12, characterized in that, The triggering part includes: A driving shaft, which is in transmission connection with the rotating part; A driving block, which is arranged on the driving shaft. When the rotating part is at the first limiting part, the driving block is connected with the first travel switch; when the rotating part is at the second limiting part, the driving block is connected with the second travel switch.

14. The control switch according to claim 13, characterized in that, An axle platform is arranged on the driving shaft, the driving block is sleeved on the driving shaft, and the triggering part further includes: A second elastic part, one end of the second elastic part abuts against the end of the driving block far away from the axle platform, and the other end of the second elastic part abuts against the vertical end face of the fixing plate.

15. The control switch according to claim 13, wherein The driving block includes a first driving block, a second driving block and a third driving block with a driving shaft hole. The first driving block and the second driving block are connected with each other through the third driving block to form an H-shaped structure, and the third driving block is movably installed on the driving shaft through the driving shaft hole.

16. The control switch according to any one of claims 1 to 15, characterized in that, An outward convex arc-shaped protrusion is arranged on the end face of the rotating part facing the triggering part. The arc-shaped protrusion is arranged along the rotating direction of the rotating part, and the height of the arc-shaped protrusion gradually decreases or increases from one end to the other end. The first limiting part and the second limiting part are respectively arranged at both ends of the arc-shaped protrusion.

17. The control switch according to claim 16, characterized in that, An arc-shaped baffle is arranged at the connection position of the rotating part and the handle. The arc-shaped baffle rotates around the base with the connection position of the rotating part and the base as a fulcrum.

18. The control switch according to claim 17, wherein A plurality of reinforcing ribs are arranged on the arc-shaped baffle, and the reinforcing ribs are connected between the arc-shaped baffle and the rotating part.

19. An anesthesia machine ventilation system, characterized in that, It includes a machine-controlled branch, a manual branch, a breathing circuit and a control system. The control system includes a valve assembly and a control switch as described in any one of claims 1 to 18. The valve assembly includes a control valve and a driver. The control valve has two inlet ends and one outlet end. The machine-controlled branch and the manual branch are respectively connected to the two inlet ends. The breathing circuit is connected to the outlet end. The driver connects the breathing circuit to the machine-controlled branch or to the manual branch according to the detector signal output by the control switch.

20. An anesthetic machine, characterized in that, It includes an anesthesia machine main unit and an anesthesia machine ventilation system as described in claim 19. The anesthesia machine ventilation system is integrated into the anesthesia machine main unit.

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