Fast oxygen valve and medical equipment

Abstract

The utility model belongs to the field of medical equipment, and provides a fast oxygen valve and medical equipment, the fast oxygen valve comprises: a valve seat provided with a main air passage, a first branch air passage and a second branch air passage, the main air passage comprises a first air passage and a second air passage which are communicated, the first branch air passage is intersected and communicated with the first air passage, and the second branch air passage is intersected and communicated with the second air passage; the first step part is arranged between the first air channel and the second air channel, extends towards the center of the main air channel along the inner wall of the main air channel, and forms an air channel communicating port of the first air channel and the second air channel; and the valve rod assembly movably penetrates through the main air channel and comprises a valve rod and a sealing end part arranged on the valve rod, and the valve rod can drive the sealing end part to move relative to the first step part so as to be spaced from or abut against the end face of the first step part, so that the air channel communicating opening is opened or blocked, and the first branch air channel and the second branch air channel are communicated or blocked. According to the utility model, the sealing end part does not slide through the air passage communication port when moving, so that the problem of scratching damage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, especially relates to a fast oxygen valve and medical equipment. BACKGROUND

[0002] The existing anesthesia equipment is provided with a fast oxygen valve, at present, the airway in the fast oxygen valve is often designed as Z-shaped or H-shaped, two airway communication openings respectively communicating with the oxygen inlet / outlet interface are formed in the side wall of the airway, a sliding rod capable of sliding in the airway is arranged on the fast oxygen valve, and two sealing rings are arranged on the sliding rod.

[0003] Under normal conditions, the sealing ring is located in the airway between the two airway communication openings, and the communication of the oxygen inlet / outlet interface is blocked. When the sliding rod is controlled to slide to the set position, the sealing ring will slide through the airway communication opening in front of the moving direction, at this time, the two airway communication openings are communicated to make the oxygen inlet / outlet interface communicated, and the oxygen can flow. When the sliding rod is reset, the sealing ring will slide through the corresponding airway communication opening again to return to between the two airway communication openings, so that the oxygen inlet / outlet interface is blocked, and the oxygen flow is stopped.

[0004] However, the sealing ring repeatedly slides through the airway communication opening for many times, and is repeatedly scraped by the edge of the airway communication opening, which causes damage. Not only the service life of the sealing ring is affected, but also the sealing effect of the airway is affected. After being scraped for a certain number of times, the sealing ring will be seriously damaged and leak, which affects the normal use of the fast oxygen valve and further affects the normal function of the anesthesia equipment. Moreover, the sealing ring needs to be additionally replaced and maintained after being damaged, which causes additional maintenance cost and delays the normal use of the anesthesia equipment. SUMMARY

[0005] The utility model embodiment provides a kind of fast oxygen valve, to solve the technical problem that the sealing ring of fast oxygen valve in the prior art is scraped and worn with sliding rod many times through the airway communication opening on the airway side wall, which affects the sealing effect of airway and the normal function of fast oxygen valve.

[0006] The fast oxygen valve of the utility model embodiment comprises:

[0007] Valve seat, the valve seat is equipped with main airway, first branch airway and second branch airway, the main airway includes the first airway and the second airway that are communicated, the first branch airway is communicated with the first airway, and the second branch airway is communicated with the second airway;

[0008] First step part between the first airway and the second airway, the first step part extends to the center of the main airway along the inner wall of the main airway, and forms the airway communication opening of the first airway and the second airway;And

[0009] A valve rod assembly movably penetrating the main air passage, the valve rod assembly comprising a valve rod and a sealing end provided on the valve rod, the valve rod being capable of moving the sealing end relative to the first step portion to be spaced apart from or abut against the end face of the first step portion, so as to open or block the air passage communication port, and to make the first branch air passage communicate with or be blocked from the second branch air passage.

[0010] Further, the cross-sectional area of the first air passage is greater than that of the second air passage, the first air passage and the second air passage are coaxially arranged, and the first step portion is a step face structure formed by the inner wall of the end of the second air passage close to the first air passage being protruded relative to the inner wall of the first air passage.

[0011] The cross-sectional area of the first air passage is less than that of the second air passage, the first air passage and the second air passage are coaxially arranged, and the first step portion is a step face structure formed by the inner wall of the end of the first air passage close to the second air passage being protruded relative to the inner wall of the second air passage.

[0012] Further, the cross-sectional area of the first air passage is the same as that of the second air passage, the first air passage and the second air passage are coaxially arranged, the first step portion has a ring shape, the outer wall of the first step portion has the same shape as the inner wall of the main air passage, and the first step portion is detachably or integrally provided on the inner wall of the main air passage.

[0013] Further, the valve rod comprises:

[0014] a first rod body, the first rod body being capable of moving between the first air passage and the second air passage; and

[0015] a second rod body detachably connected with the first rod body, the second rod body being capable of moving in the second air passage, and the sealing end being provided at the end of the first rod body away from the second rod body.

[0016] Further, the second rod body has a mounting groove at the end close to the first rod body, and the first rod body is embedded in the mounting groove to be detachably connected with the second rod body.

[0017] Further, the valve rod is an integral structure, and the sealing end is detachably provided on the valve rod.

[0018] Further, the first air passage also communicates with the atmosphere, and the fast oxygen valve further comprises a plug detachably provided at the communication port between the first air passage and the atmosphere, and the cross-sectional area of the communication port between the first air passage and the atmosphere is greater than or equal to that of the sealing end.

[0019] Further, the sealing end portion comprises:

[0020] The mounting rod head is larger in size than the air passage communication port; and

[0021] A first sealing ring is sleeved on the mounting rod head, and the valve rod drives the mounting rod head to reciprocate, so that the first sealing ring is in abutment or spaced from the first step portion.

[0022] Further, the main air passage further comprises a third air passage in communication with the atmosphere and the second air passage, the third air passage is coaxially arranged with the second air passage, and a second step portion is arranged between the second air passage and the third air passage and extends from the inner wall of the main air passage to the center of the main air passage;

[0023] The valve rod assembly further comprises an elastic element sleeved on the valve rod, a limiting portion is arranged on the valve rod, one end of the elastic element is in abutment with the limiting portion, and the other end is in abutment with the second step portion; the elastic element exerts a force on the valve rod to make the sealing end portion abut against the first step portion.

[0024] Further, the third air passage is provided with a third step portion extending from the inner wall of the main air passage to the center of the main air passage at the communication position of the third air passage and the atmosphere, and the limiting portion is in abutment or spaced from the third step portion when the valve rod moves.

[0025] Further, the valve rod assembly further comprises a second sealing ring sleeved on the valve rod, and the second sealing ring is arranged between the communication port of the second air passage and the second branch air passage and the communication port of the second air passage and the third air passage.

[0026] Further, the valve rod comprises a mounting end portion, the mounting end portion is away from the sealing end portion and extends out of the main air passage, and a pressing structure is arranged on the mounting end portion, and the cross-sectional area of the pressing structure is larger than that of the valve rod.

[0027] The utility model embodiment further provides a medical equipment which comprises the fast oxygen valve according to any one of the above.

[0028] The sealing end part in the valve rod assembly can be spaced or abutted with the end face of the first step part through the movement of the valve rod to open or block the air passage communication port between the first air passage and the second air passage, so that the first branch air passage and the second branch air passage are communicated or blocked, the on-off control of the gas is realized, the sealing end part does not slide through the air passage communication port in the movement process, but is in a side abutment sealing or spacing relationship with the part where the air passage communication port is located, and therefore will not be damaged by the scraping of the edge of the air passage communication port, will not affect the sealing effect of the main air passage, will not have the problem of gas leakage, prolongs the service life of the valve rod assembly, avoids additional maintenance cost, and ensures the normal use of the fast oxygen valve and the normal function of the anesthesia equipment. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a perspective view of the fast oxygen valve of the utility model embodiment;

[0030] Figure 2 is a perspective exploded view of the fast oxygen valve of the utility model embodiment;

[0031] Figure 3 is Figure 1 the cross-sectional view of the fast oxygen valve shown in A-A direction;

[0032] Figure 4 is the cross-sectional view of the valve seat of the utility model one embodiment;

[0033] Figure 5 is the cross-sectional view of the valve seat of the utility model another embodiment;

[0034] Figure 6 is the perspective exploded view of the valve rod assembly of the utility model one embodiment.

[0035] MAIN ELEMENT SYMBOL EXPLANATION:

[0036] Fast oxygen valve - 100; Valve seat - 10; Main air passage - 11; First air passage - 111; Second air passage - 112; Air passage communication port - 113; Third air passage - 114; First branch air passage - 12; Second branch air passage - 13; First step part - 14; Second step part - 15; Third step part - 16; Valve rod assembly - 20; Valve rod - 21; First rod body - 211; Second rod body - 212; Installation groove - 2121; Limiting part - 213; Sealing end part - 22; Installation rod head - 221; First sealing ring - 222; Elastic element - 23; Second sealing ring - 24; Pressing structure - 25; Plug - 30. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the following will be further described in detail in combination with the drawings and examples. The examples of the examples are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The examples described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0038] In the description of the utility model, 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, only for the convenience of describing the utility model 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, therefore, it cannot be understood as limiting the utility model.

[0039] 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 indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0040] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model 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 utility model 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.

[0041] Please refer to Figures 1 to 5 The fast oxygen valve 100 of the utility model embodiment comprises:

[0042] The valve seat 10 is provided with a main gas channel 11, a first branch gas channel 12 and a second branch gas channel 13, the main gas channel 11 comprises a first gas channel 111 and a second gas channel 112 in communication, the first branch gas channel 12 and the first gas channel 111 intersect and communicate, and the second branch gas channel 13 and the second gas channel 112 intersect and communicate;

[0043] A first step portion 14 is arranged between the first gas passage 111 and the second gas passage 112, the first step portion 14 extends along the inner wall of the main gas passage 11 to the center of the main gas passage 11 and forms a gas passage communication port 113 of the first gas passage 111 and the second gas passage 112; and

[0044] A valve rod assembly 20 movably penetrates the main gas passage 11, the valve rod assembly 20 comprises a valve rod 21 and a sealing end portion 22 arranged on the valve rod 21, the valve rod 21 can drive the sealing end portion 22 to move relative to the first step portion 14 to be spaced apart from or abut against the end face of the first step portion 14, so as to open or block the gas passage communication port 113, and make the first branch gas passage 12 and the second branch gas passage 13 communicate or be blocked.

[0045] Specifically, when the valve rod 21 drives the sealing end portion 22 to move to abut against the end face of the first step portion 14 (as shown in the figure, move to the right), the gas passage communication port 113 is blocked by the sealing end portion 22, the first gas passage 111 and the second gas passage 112 are blocked, so that the first branch gas passage 12 and the second branch gas passage 13 are also blocked, and oxygen cannot flow. Figure 3 When the valve rod 21 drives the sealing end portion 22 to move away from (as shown in the figure, move to the left) the first step portion 14 to be spaced apart from the end face of the first step portion 14, the gas passage communication port 113 is also spaced apart from the sealing end portion 22 and is opened, the first gas passage 111 and the second gas passage 112 are communicated, so that the first branch gas passage 12 and the second branch gas passage 13 are also communicated, and oxygen can flow. Figure 3

[0046] In the fast oxygen valve 100, the sealing end portion 22 in the valve rod assembly 20 can be spaced apart from or abut against the end face of the first step portion 14 through the movement of the valve rod 21, so as to open or block the gas passage communication port 113 between the first gas passage 111 and the second gas passage 112, thereby making the first branch gas passage 12 and the second branch gas passage 13 communicate or be blocked, and realizing the on-off control of the gas. The sealing end portion 22 will not slide through the gas passage communication port 113 in the moving process, but will abut against or be spaced apart from the part where the gas passage communication port 113 is located, so as not to be damaged by the scraping of the edge of the gas passage communication port 113, not to affect the sealing effect of the main gas passage 11, and not to have the problem of gas leakage, thereby prolonging the service life of the valve rod assembly 20, avoiding additional maintenance cost, and ensuring the normal use of the fast oxygen valve 100 and the normal function of the anesthesia equipment.

[0047] ​Specifically, the main air passage 11 penetrates the valve seat 10 in the length direction of the valve seat 10, and the valve rod 21 is movably arranged in the main air passage 11 in the length direction of the valve seat 10, facilitating the arrangement of the valve rod assembly 20 and the main air passage 11. The first branch air passage 12 and the second branch air passage 13 are orthogonal to the first air passage 111 and the second air passage 112 respectively, so that the internal structure of the valve seat 10 is more regular, and the length of the first branch air passage 12 and the second branch air passage 13 can be shortened to accelerate the flow of oxygen.

[0048] The first branch air passage 12 and the second branch air passage 13 are communicated with the oxygen outlet / inlet (oxygen outlet / inlet joint), and the opening and closing of the first air passage 111 and the second air passage 112 are controlled by the valve rod assembly 20, that is, the opening and closing of the first branch air passage 12 and the second branch air passage 13 are controlled, thereby realizing the opening and closing control of oxygen.

[0049] In the embodiment, the first step portion 14 is a boundary structure in the main air passage 11, which divides the main air passage 11 into the first air passage 111 and the second air passage 112 in communication. The air passage is a regular structure, and the center of the main air passage 11 can be understood as the center axis of the main air passage 11. The inner peripheral wall of part of the main air passage 11 extends to the center axis of the main air passage 11 to form the first step portion 14. Therefore, the first step portion 14 is generally a ring-shaped or cylindrical structure with an opening in the middle, and the opening in the middle is the air passage communication port 113 of the first air passage 111 and the second air passage 112.

[0050] The sealing end portion 22 is arranged at the end of the valve rod 21 and at least partially located in the first air passage 111, and the cross-sectional area of the sealing end portion 22 is greater than that of the air passage communication port 113, so that the sealing end portion 22 can be in side abutment (i.e., abutment with the end face of the first step portion 14) or spacing with the first step portion 14, that is, by plugging or opening the air passage communication port 113, the opening and closing control between the first branch air passage 12 and the second branch air passage 13 can be realized, and the sliding of the valve rod 21 can be limited to prevent the valve rod 21 from falling out of the main air passage 11.

[0051] In the embodiment, the sealing end portion 22 itself can be made of a material with certain elasticity or deformation ability (such as rubber, plastic, etc.), or a sealing ring, a sealing sheet or other structure with certain elasticity or deformation ability can be arranged thereon to effectively seal the air passage communication port 113 between the first air passage 111 and the second air passage 112, while prolonging the service life of the sealing end portion 22.

[0052] Please refer to Figure 2 , Figure 3 and Figure 6 , and further, the sealing end portion 22 comprises:

[0053] The mounting rod head 221 has a size greater than that of the air passage communication port 113; and

[0054] The first sealing ring 222 is sleeved on the mounting rod head 221, and the valve rod 21 can drive the mounting rod head 221 to move reciprocally, so that the first sealing ring 222 abuts against or is spaced from the first stepped portion 14.

[0055] That is, the first air passage 111 and the second air passage 112 are effectively sealed by the deformable structure provided in the sealing end portion 22.

[0056] In the embodiment, the sealing end portion 22 can be divided into the mounting rod head 221 provided at the end of the valve rod 21 and the first sealing ring 222 sleeved on the mounting rod head 221. The mounting rod head 221 has a size greater than that of the air passage communication port 113, and the first sealing ring 222 also has a size greater than that of the air passage communication port 113. In this way, the mounting rod head 221 can limit the sealing end portion 22 from being pulled into the second air passage 112 and causing the valve rod 21 to slide out of the main air passage 11, and the first sealing ring 222 can be driven to move, so that the first sealing ring 222 abuts against or is spaced from the end surface of the first stepped portion 14 to seal or open the air passage communication port 113.

[0057] In one embodiment, the mounting rod head 221 can include a limiting end portion at the end of the valve rod 21 and a connecting portion connecting the limiting end portion and the valve rod 21. The limiting end portion has a size greater than that of the first stepped portion 14 to limit the sealing end portion 22 from being pulled into the second air passage 112. The first sealing ring 222 is sleeved on the connecting portion and can be pressed by the limiting end portion toward the end surface of the first stepped portion 14.

[0058] In addition, the connecting portion can have a size slightly smaller than or equal to that of the air passage communication port 113. In this way, the connecting portion itself can also seal the air passage communication port 113 to some extent, thereby improving the sealing effect of the sealing end portion 22 on the air passage communication port 113.

[0059] In addition, the front end of the valve rod 21 can extend out of the valve seat 10 from the main air passage 11 to form a mounting end portion. That is, the valve rod 21 can include a mounting end portion away from the sealing end portion 22 and extending out of the main air passage 11, and a pressing structure 25 (such as a block structure, a button, etc.) is arranged on the mounting end portion. The cross-sectional area of the pressing structure 25 is greater than that of the valve rod 21, and a user can press the pressing structure 25 to conveniently control the movement of the valve rod 21.

[0060] Exemplarily, the pressing structure 25 and the valve rod 21 can be an integral structure to improve the integrality of the valve rod 21 and save the production cost of the valve rod 21; or the pressing structure 25 and the valve rod 21 can be detachably arranged, such as being connected through a threaded structure, an interference fit or a fastener (rivet or screw, etc.), so as to facilitate the replacement and maintenance of the structure.

[0061] In the embodiment, the pressing structure 25 is detachably arranged with the valve rod 21 through a fastener, which is simple in arrangement mode and facilitates the dismounting, installation, replacement and maintenance.

[0062] Further, the surface of the pressing structure 25 can be provided with an anti-skid surface (such as a rough surface, an anti-skid line, etc.) or an anti-skid sleeve, so that the user can receive a certain touch feedback when touching the pressing structure 25, the user's finger can be prevented from sliding away when pressing the pressing structure 25, and the user's experience is improved.

[0063] In the embodiment of the utility model:

[0064] In the normal state of the fast oxygen valve 100, the sealing end portion 22 abuts against the end face of the first stepped portion 14, the sealing end portion 22 blocks the air passage communication port 113 of the first air passage 111 and the second air passage 112, at this time, the first air passage 111 and the second air passage 112 are blocked, and the first branch air passage 12 and the second branch air passage 13 are also blocked.

[0065] In the use state of the fast oxygen valve 100, the pressing structure 25 is pressed to make the valve rod 21 move into the first air passage 111, so that the sealing end portion 22 is spaced from the end face of the first stepped portion 14, and the air passage communication port 113 of the first air passage 111 and the second air passage 112 is opened, at this time, the first air passage 111 and the second air passage 112 are communicated, and the first branch air passage 12 and the second branch air passage 13 are also communicated.

[0066] When the pressing structure 25 is pulled back to the original position or released to reset (such as a reset spring can be arranged on the valve rod 21), the sealing end portion 22 is reset by the valve rod 21 to abut against the end face of the first stepped portion 14 again, and the first branch air passage 12 and the second branch air passage 13 are blocked.

[0067] Please refer to Figure 3 and Figure 4 In an embodiment, the cross-sectional area of the first air passage 111 is greater than that of the second air passage 112, the first air passage 111 and the second air passage 112 are coaxially arranged, and the first stepped portion 14 is a stepped surface structure formed by the protrusion of the inner wall of the end of the second air passage 112 close to the first air passage 111 relative to the inner wall of the first air passage 111.

[0068] Alternatively, in another embodiment, the cross-sectional area of the first air passage 111 is smaller than that of the second air passage 112, the first air passage 111 is coaxially arranged with the second air passage 112, and the first step portion 14 is a step surface structure formed by the inner wall of the end of the first air passage 111 close to the second air passage 112 being protruded relative to the inner wall of the second air passage 111.

[0069] Specifically, since the first air passage 111 is coaxially arranged with the second air passage 112, when the cross-sectional area of the first air passage 111 is designed to be different from that of the second air passage 112, there will be a certain height difference between the inner wall of the first air passage 111 and the inner wall of the second air passage 112:

[0070] When the cross-sectional area of the first air passage 111 is larger than that of the second air passage 112, the inner wall of the end of the second air passage 112 communicating with the first air passage 111 is protruded relative to the inner wall of the first air passage 111; when the cross-sectional area of the first air passage 111 is smaller than that of the second air passage 112, the inner wall of the end of the first air passage 111 communicating with the second air passage 112 is protruded relative to the inner wall of the second air passage 112; the air passage communication port 113 of the first air passage 111 and the second air passage 112 is an opening in the first step portion 14, which is also an opening of the end of the second air passage 112 communicating with the first air passage 111.

[0071] In this way, by specifically designing the shape of the main air passage 11 to make the first air passage 111 and the second air passage 112 have a certain drop, i.e., to form a step surface structure to constitute the first step portion 14, without making too many structural designs on the valve seat 10, the manufacturing cost of the quick oxygen valve 100 can be reduced. Moreover, there will also be a certain drop between the communication port of the first branch air passage 12 and the first air passage 111 and the sealing end portion 22, the sealing end portion 22 is always spaced from the communication port and will not be in contact, further avoiding the situation of scratching and wearing of the sealing end portion 22.

[0072] It should be noted that: for the case where the cross-sectional area of the first air passage 111 is larger than that of the second air passage 112, the sealing end portion 22 is located on the side of the first air passage 111 to block the air passage communication port 113, at this time, the valve rod 21 is pushed inward to make the sealing end portion 22 open the air passage communication port 113; and for the case where the cross-sectional area of the first air passage 111 is smaller than that of the second air passage 112, the sealing end portion 22 is located on the side of the second air passage 112 to block the air passage communication port 113, at this time, the valve rod 21 is pulled outward to make the sealing end portion 22 open the air passage communication port 113.

[0073] Please refer to Figure 5In another embodiment, the first air passage 111 has the same cross-sectional area as the second air passage 112, the first air passage 111 is coaxially arranged with the second air passage 112, the first step portion 14 has a ring-shaped cross-sectional shape, and the outer wall of the first step portion 14 has the same shape as the inner wall of the main air passage 11. The first step portion 14 is detachably or integrally arranged on the inner wall of the main air passage 11.

[0074] It can be understood that the first air passage 111 has the same cross-sectional area as the second air passage 112, that is, the main air passage 11 itself is a regular structure air passage, and after the first step portion 14 is arranged at a specified position in the main air passage 11, the main air passage 11 is divided into the first air passage 111 and the second air passage 112. The cross-sectional shape of the first step portion 14 is ring-shaped, that is, the shape of the first step portion 14 can be a circular ring or a cylinder, and so on, thereby better matching the inner wall of the main air passage 11 to ensure air tightness and stability.

[0075] At this time, the cross-sectional area of the sealing end portion 22 is greater than that of the air passage communication port 113 and less than that of the first air passage 112, and the cross-sectional area of at least part of the valve rod 21 (such as the part of the valve rod 21 that can move in the second air passage 112) is equal to or close to that of the second air passage 111. In this way, the sealing end portion 22 can completely block the air passage communication port 113 while being spaced apart from the inner wall of the first air passage 112 by a certain distance, and the sealing end portion 22 does not rub against the inner wall of the first air passage 112 when moving, thereby avoiding the problem of wear caused by scraping and rubbing between the first air passage 112 and the communication port of the first branch air passage 12. In addition, the valve rod 21 can stably move in the main air passage 11 without deviation or shaking.

[0076] In one embodiment, the first step portion 14 can be formed in the main air passage 11 at the same time as the main air passage 11 is manufactured, that is, it can be directly formed in the main air passage 11 as part of the valve seat 10, without the need to additionally arrange the first step portion 14 in the main air passage 11, thereby reducing the manufacturing process of the oxygen fast valve 100.

[0077] Alternatively, in another embodiment, the first step portion 14 can be arranged in the main air passage 11 after the main air passage 11 is manufactured, such as by being detachably arranged in the main air passage 11 through bonding, fitting, limiting, clamping, and the like, thereby facilitating replacement and maintenance when the first step portion 14 is damaged.

[0078] Preferably, the first step portion 14 is an annular structure with a through hole, which is integrally formed in the main air channel 11, the size of the first step portion 14 can be equal to or similar to that of the sealing end portion 22 (or the first sealing ring 222 on the sealing end portion 22), and the size of the through hole is smaller than that of the sealing end portion 22, which prevents the sealing end portion 22 from sliding out of the first step portion 14 to the second air channel 112, ensures good cooperation with the sealing end portion 22, reduces the space occupation of the main air channel 11, ensures the length of the first air channel 111 and / or the second air channel 112, and facilitates replacement and maintenance.

[0079] Please refer to Figure 2 , Figure 3 and Figure 6 , further, the valve rod 21 comprises:

[0080] a first rod body 211, which is movable between the first air channel 111 and the second air channel 112; and

[0081] a second rod body 212, which is detachably connected with the first rod body 211 and is movable in the second air channel 112, and the sealing end portion 22 is arranged at an end of the first rod body 211 away from the second rod body 212.

[0082] Specifically, the valve rod 21 can be a split structure, which can be divided into the first rod body 211 and the second rod body 212 detachably connected with the first rod body 211, wherein:

[0083] the first rod body 211 penetrates the first air channel 111 and the second air channel 112 and is located in the first air channel 111 and the second air channel 112 as a whole, so as to move between the first air channel 111 and the second air channel 112 and drive the sealing end portion 22 to move, the sealing end portion 22 is fixedly or detachably arranged at the end of the first rod body 211, and most of the structure is located in the first air channel 111, so as to cooperate with the first step portion 14 and the air channel communication port 113 between the first air channel 111 and the second air channel 112, the second rod body 212 is at least partially located in the second air channel 112, so that the end thereof is detachably connected with the first rod body 211, and the front end (i.e. the mounting end portion mentioned above) can extend out of the main air channel 11 to accept the pressing operation of the user.

[0084] The detachable connection between the first rod body 211 and the second rod body 212 can be screw connection, clamping connection or limiting connection, for example, the front end of the first rod body 211 can be detachably embedded in the end of the second rod body 212 for clamping, or the end of the second rod body 212 can be detachably embedded in the front end of the first rod body 211 for clamping, which is a simple detachable connection mode and facilitates the disassembly and assembly of the two.

[0085] In the embodiment in which the valve stem 21 is composed of the first stem body 211 and the second stem body 212, the mounting stem head 221 in the above is integrally formed with the first stem body 211, and the first sealing ring 222 on the sealing end portion 22 is sleeved on the end of the first stem body 211, so as to control the structural complexity of the first stem body 211 and improve the structural integrity of the first stem body 211, thereby simplifying the manufacturing process.

[0086] In addition, the size of the second stem body 212 is matched with the size of the second air channel 112, or the outer wall of the second stem body 212 is in slidable contact with the inner circumferential wall of the second air channel 112, so that the movement of the second stem body 212 in the second air channel 112 and the main air channel 11 is more stable, and the shaking condition is avoided.

[0087] Please refer to Figure 3 and Figure 6 Further, the second stem body 212 is provided with a mounting groove 2121 at one end close to the first stem body 211, and the first stem body 211 is embedded in the mounting groove 2121 and detachably connected with the second stem body 212 at one end close to the second stem body 212.

[0088] Specifically, the cross-sectional area of the slot of the mounting groove 2121 is greater than that of the end of the first stem body 211, and the mounting groove 2121 itself is tapered towards the other end of the second stem body 212. In this way, when the end of the first stem body 211 is embedded in the mounting groove 2121, the first stem body 211 can be more and more stably clamped by the mounting groove 2121 as it is embedded deeper into the mounting groove 2121, so as to achieve detachable connection of the first stem body 211 and the second stem body 212. When the two need to be detached, pulling the first stem body 211 and / or the second stem body 212 in the opposite direction can achieve separation, which is more convenient for assembly and disassembly in the valve seat 10.

[0089] Alternatively, the mounting groove 2121 can be a threaded groove, and the surface of the end of the first stem body 211 close to the first stem body 211 is provided with a threaded structure to be threadedly connected with the mounting groove 2121, i.e., threadedly connected with the second stem body 212, so that the connection of the first stem body 211 and the second stem body 212 is more stable and not easy to separate.

[0090] In this embodiment, the tapered mounting groove 2121 cooperates with the first stem body 211 to achieve detachable connection of the first stem body 211 and the second stem body 212. Of course, in other embodiments, the way of detachable connection of the first stem body 211 and the second stem body 212 can also be other, which can be selected as needed in specific implementation.

[0091] Further, in another embodiment, the valve stem 21 is an integral structure, and the sealing end portion 22 is detachably arranged with the valve stem 21.

[0092] That is, the sealing end portion 22 is detachably arranged with the valve rod 21 as an independent part, the sealing end portion 22 has a small volume as a part, and thus when the sealing end portion 22 is damaged, the sealing end portion 22 can be directly detached and replaced for maintenance.

[0093] The detachable arrangement between the sealing end portion 22 and the valve rod 21 can be a threaded connection, a clamping connection, or a limiting connection, and the like. For example, the end portion of the sealing end portion 22 towards the valve rod 21 can be detachably clamped in the end of the valve rod 21, or the end of the valve rod 21 can be detachably clamped in the sealing end portion 22. Such a detachable connection is simple and facilitates the detachment and assembly of the two.

[0094] The size of the part of the valve rod 21 located in the second air passage 112 is matched with the size of the second air passage 112, or the outer wall of the part of the valve rod 21 located in the second air passage 112 is in sliding contact with the inner wall of the second air passage 112, so that the movement of the valve rod 21 in the second air passage 112 and the main air passage 11 is more stable, and the shaking of the valve rod 21 is avoided.

[0095] Please refer to Figures 1 to 3 Further, the first air passage 111 also communicates with the atmosphere, and the fast oxygen valve 100 further comprises a plug 30 detachably arranged at the communication port of the first air passage 111 and the atmosphere, and the cross-sectional area of the communication port of the first air passage 111 is greater than or equal to the cross-sectional area of the sealing end portion 22.

[0096] Specifically, the plug 30 can be a rubber plug or the like that can be used for sealing and plugging, and the plug 30 is clamped on the valve seat 10 to plug the first air passage 111, which not only maintains the sealing of the first air passage 111 and the atmosphere, but also opens or closes the installation channel for installing and detaching the sealing end portion 22.

[0097] When the sealing end portion 22 needs to be installed on the valve rod 21, the valve rod 21 can be inserted into the main air passage 11 from the other side (the side opposite to the plug 30) of the valve seat 10, the plug 30 is removed from the valve seat 10, the sealing end portion 22 is placed into the first air passage 111 from the communication port of the first air passage 111 and the atmosphere, and the end portion of the valve rod 21 close to the first air passage 111 is connected, and then the plug 30 is installed on the valve seat 10, so that the sealing end portion 22 and the valve rod 21 are assembled, and the first air passage 111 is sealed. When the sealing end portion 22 needs to be removed from the valve rod 21, the plug 30 is removed from the valve seat 10, and then the sealing end portion 22 is removed from the first air passage 111.

[0098] Alternatively, when the first rod body 211 needs to be connected with the second rod body 212, the second rod body 212 can be first inserted into the main air channel 11 from the other side of the valve seat 10, the plug 30 is removed from the valve seat 10, the first rod body 211 is inserted into the first air channel 111 from the communication port of the first air channel 111 with the atmosphere, and the sealing end portion 22 is located at the end of the first rod body 211 away from the second rod body 212, the first rod body 211 is connected with the end of the second rod body 212 close to the first air channel 111, and then the plug 30 is installed on the valve seat 10, so that the first rod body 211 is connected with the second rod body 212, and the first air channel 111 is sealed. When the first rod body 211 needs to be separated from the second rod body 212, the plug 30 is first removed from the valve seat 10, and then the first rod body 211 is taken out of the first air channel 111.

[0099] Please refer to Figures 3 to 5 Further, the main air channel 11 further comprises a third air channel 114 communicating with the atmosphere and the second air channel 112, the third air channel 114 is coaxially arranged with the second air channel 112, and a second step portion 15 extending from the inner wall of the main air channel 11 to the center of the main air channel 11 is arranged between the second air channel 112 and the third air channel 114;

[0100] The valve rod assembly 20 further comprises an elastic element 23 sleeved on the valve rod 21, the valve rod 21 is provided with a limiting portion 213, one end of the elastic element 23 abuts against the limiting portion 213, and the other end abuts against the second step portion 15, and the elastic element 23 exerts a force on the valve rod 21 to make the sealing end portion 22 abut against the first step portion 14.

[0101] In the embodiment, the third air channel 114 communicates with the atmosphere and is coaxially arranged with the second air channel 112, that is, the first air channel 111, the second air channel 112 and the third air channel 114 are coaxially arranged, so that the valve rod 21 can be sequentially arranged through the third air channel 114, the second air channel 112 and the first air channel 111, and can be smoothly moved in the main air channel 11, and the structure of the main air channel 11 is more regular and convenient for production and manufacturing.

[0102] The elastic element 23 can be an element capable of deforming to generate elastic force such as a spring, the second step portion 15 and the limiting portion 213 are used to limit the position of the elastic element 23, the elastic element 23 is abutted against, so that the elastic element 23 is in a compressed state between the second step portion 15 and the limiting portion 213, and thus a pushing force acting on the valve rod 21 to make the valve rod 21 tend to move outward can be generated, so that when the valve rod 21 is not pressed, the sealing end portion 22 remains in abutment with the first step portion 14, that is, the first branch air channel 12 and the second branch air channel 13 remain in a blocked state, that is, the fast oxygen valve 100 remains in a normally closed state.

[0103] In addition, the elastic element 23 can also generate a certain resistance when the user presses the valve rod 21, providing the user with a pressing feedback. The abutment between the sealing end 22 and the first step portion 14 can also prevent the valve rod 21 from sliding out of the main air channel 11 due to the action of the elastic element 23 on the valve rod 21.

[0104] The second step portion 15 has a similar structure to the first step portion 14 described above. Therefore, the related features and descriptions of the second step portion 15 can be referred to the related features and descriptions of the first step portion 14 described above, which will not be repeated here.

[0105] In the embodiment, the limiting portion 213 can have a ring-shaped protrusion shape, allowing the elastic element 23 to abut well. The limiting portion 213 can be integrally formed with the valve rod 21 (the second rod body 212), so as to improve the structural strength of the limiting portion 213 and simplify the manufacturing process and reduce the manufacturing cost.

[0106] Of course, in some embodiments, the limiting portion 213 and the valve rod 21 can also have a split structure, i.e., the limiting portion 213 is provided on the valve rod 21 as a separate component. For example, a ring-shaped structure suitable for the elastic element 23 can be sleeved on the valve rod 21 and fixed as the limiting portion 213. In this way, when the limiting portion 213 is damaged, it can be easily replaced and maintained.

[0107] Please refer to Figures 3 to 5 Furthermore, the third air channel 114 is provided with a third step portion 16 extending from the inner wall of the main air channel 11 to the center of the main air channel 11, and the limiting portion 213 can abut or be spaced from the third step portion 16 when the valve rod 21 moves.

[0108] Specifically, the third step portion 16 is used to limit the movement distance of the valve rod 21 into the valve seat 10. In the normal state, the limiting portion 213 is spaced from the third step portion 16. When the user presses the valve rod 21 to move it into the valve seat 10 by a certain distance, the limiting portion 213 will abut against the third step portion 16 to limit the valve rod 21 from continuing to move into the valve seat 10. On the basis of ensuring that the sealing end 22 is completely spaced from the first step portion 14, the sealing end 22 is prevented from moving too far and colliding with the valve seat 10 or other structures.

[0109] It can be understood that the distance between the limiting portion 213 and the third step portion 16 is the distance that the valve rod 21 can move in the main air channel 11, and is also the distance that the sealing end 22 can move in the main air channel 11.

[0110] The third step portion 16 has a similar structure to the first step portion 14 described above. Therefore, the related features and descriptions of the third step portion 16 can be referred to the related features and descriptions of the first step portion 14 described above, which will not be repeated here.

[0111] For the above-mentioned embodiment in which the cross-sectional area of the first air passage 111 is smaller than that of the second air passage 112, in a specific implementation of the third air passage 114, the second step portion 15, the third step portion 16, and the limiting portion 213, the moving direction of the valve stem 21 is opposite to that in the embodiment shown in Figure 3 Therefore, some structures of the valve seat 10 and the valve stem assembly 20 in the embodiment shown in Figure 3 need to be adjusted accordingly, and the specific structural adjustments will not be described in detail here, as long as the elastic element 23 is in a compressed state and exerts a force on the valve stem 21 to move towards the inside of the valve body 10.

[0112] Under the above structural adjustment, when the valve stem 21 is not pulled outwards of the valve seat 10, the sealing end portion 22 is pushed inwards of the valve body 10 by the valve stem 21, and remains in a state of blocking the air passage communication port 113 on the side of the second air passage 112. When the valve stem 21 is pulled outwards of the valve body 10, the sealing end portion 22 is moved in the second air passage 112 to separate from the air passage communication port 113, and the elastic element 23 is further compressed. When the valve stem 21 is released, the valve stem 21 is driven by the elastic element 23 to reset to the state in which the sealing end portion 22 blocks the air passage communication port 113.

[0113] Please refer to Figure 2 , Figure 3 and Figure 6 Furthermore, the valve stem assembly 20 further comprises a second sealing ring 24 sleeved on the valve stem 21, which blocks the communication port between the second air passage 112 and the second branch air passage 13 and the communication port between the second air passage 112 and the third air passage 114.

[0114] Specifically, the valve stem 21 is provided with an annular groove, and the second sealing ring 24 is sleeved in the annular groove. The size of the annular groove is matched with the size of the second sealing ring 24. During the movement of the valve stem 21, the second sealing ring 24 will not be dislocated on the valve stem 21 due to friction with the inner wall of the air passage, and the outer ring of the second sealing ring 24 is in sealing contact with the inner circumferential wall of the second air passage 112, but the outer wall of the valve stem 21 (the second stem body 212) is still spaced from the inner circumferential wall of the second air passage 112, and the sliding contact between the valve stem 21 (the second stem body 212) and the second air passage 112 is maintained, which ensures the sealing effect of the second sealing ring 24 on the side of the second air passage 112 connected to the atmosphere and the stability of the movement of the valve stem 21 (the second stem body 212).

[0115] In addition, the limiting portion 213 and the third step portion 16 are arranged to limit the movable distance of the second sealing ring 24 in the second air passage 112, and the movable range of the second sealing ring 24 is between the communication port of the second air passage 112 and the second branch air passage 13 and the communication port of the second air passage 112 and the third air passage 114, so as to prevent the second sealing ring 24 from being scraped with the communication port of the second air passage 112 and the second branch air passage 13 and the second sealing ring 24 from sliding out of the second air passage 112, and to ensure the service life of the second sealing ring 24 and the normal function of the fast oxygen valve 100.

[0116] The medical equipment according to any one of the embodiments can be the fast oxygen valve 100.

[0117] In the medical equipment, the sealing end portion 22 of the valve rod assembly 20 can be spaced apart from or abutted against the end face of the first step portion 14 through the movement of the valve rod 21, so as to open or block the air passage communication port 113 between the first air passage 111 and the second air passage 112, so that the first branch air passage 12 and the second branch air passage 13 are communicated or blocked, the on-off control of the gas is realized, the sealing end portion 22 will not slide through the air passage communication port 113 in the movement process, but is in a side abutment sealing or spacing relationship with the part where the air passage communication port 113 is located, so that the sealing end portion 22 will not be damaged due to the scraping of the edge of the air passage communication port 113, the sealing effect of the main air passage 11 will not be affected, and the problem of gas leakage will not occur, the service life of the valve rod assembly 20 is prolonged, the additional maintenance cost is avoided, and the normal use of the fast oxygen valve 100 and the normal function of the anesthesia equipment are ensured.

[0118] Exemplarily, the medical equipment can be an anesthesia machine, a breathing machine or an oxygen therapy equipment and the like which needs to quickly provide oxygen to a recipient, and the medical equipment is taken as the anesthesia machine as a specific implementation in the embodiments of the present application.

[0119] In the description of the present application, the description of the terms "embodiment one", "embodiment two" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, 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.

[0120] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fast oxygen valve, characterized in that, include: A valve seat, wherein the valve seat is provided with a main air passage, a first branch air passage and a second branch air passage, the main air passage includes a first air passage and a second air passage that are connected, the first branch air passage intersects and is connected to the first air passage, and the second branch air passage intersects and is connected to the second air passage. A first step portion is provided between the first airway and the second airway. The first step portion extends along the inner wall of the main airway toward the center of the main airway and forms an airway communication port between the first airway and the second airway. as well as A valve stem assembly is movably inserted through the main air passage. The valve stem assembly includes a valve stem and a sealing end disposed on the valve stem. The valve stem can drive the sealing end to move relative to the first step portion and space from or abut against the end face of the first step portion to open or block the air passage connection port, so that the first branch air passage is connected to or blocked from the second branch air passage.

2. The fast oxygen valve according to claim 1, characterized in that, The cross-sectional area of ​​the first airway is larger than that of the second airway. The first airway and the second airway are coaxially arranged. The first stepped portion is a stepped surface structure formed by the inner wall of the second airway near the first airway protruding relative to the inner wall of the first airway; or The cross-sectional area of ​​the first airway is smaller than that of the second airway. The first airway and the second airway are coaxially arranged. The first step portion is a stepped surface structure formed by the inner wall of the end of the first airway near the second airway protruding relative to the inner wall of the second airway.

3. The fast oxygen valve according to claim 1, characterized in that, The cross-sectional area of ​​the first airway is the same as that of the second airway. The first airway and the second airway are coaxially arranged. The cross-sectional shape of the first step is annular. The outer wall shape of the first step is the same as that of the inner wall of the main airway. The first step is detachably or integrally formed on the inner wall of the main airway.

4. The fast oxygen valve according to claim 1, characterized in that, The valve stem includes: A first rod, movable between the first airway and the second airway; and A second rod is detachably connected to the first rod, and the second rod can move in the second air passage. The sealing end is located at the end of the first rod away from the second rod.

5. The fast oxygen valve according to claim 4, characterized in that, The second rod has a mounting groove at one end near the first rod, and the first rod is detachably connected to the second rod by being embedded in the mounting groove at one end near the second rod.

6. The fast oxygen valve according to claim 1, characterized in that, The valve stem is an integral structure, and the sealing end is detachably connected to the valve stem.

7. The fast oxygen valve according to claim 4 or 6, characterized in that, The first airway is also connected to the atmosphere, and the fast oxygen valve also includes a plug detachably disposed at the connection port between the first airway and the atmosphere, wherein the cross-sectional area of ​​the connection port between the first airway and the atmosphere is greater than or equal to the cross-sectional area of ​​the sealing end.

8. The fast oxygen valve according to claim 1, characterized in that, The sealing end includes: The mounting rod head is larger than the size of the airway connection port; and A first sealing ring is fitted onto the mounting rod head, and the valve stem can drive the mounting rod head to reciprocate, so that the first sealing ring abuts against or is spaced from the first step portion.

9. The fast oxygen valve according to claim 1, characterized in that, The main air duct also includes a third air duct that connects the atmosphere and the second air duct. The third air duct is coaxially arranged with the second air duct, and a second step is provided between the second air duct and the third air duct, extending along the inner wall of the main air duct toward the center of the main air duct. The valve stem assembly further includes an elastic element sleeved on the valve stem. The valve stem is provided with a limiting portion. One end of the elastic element abuts against the limiting portion, and the other end abuts against the second step portion. The elastic element applies a force to the valve stem to cause the sealing end to abut against the first step portion.

10. The fast oxygen valve according to claim 9, characterized in that, The third air passage is provided with a third step extending along the inner wall of the main air passage toward the center of the main air passage at the connection point with the atmosphere. The limiting part can abut or be spaced from the third step as the valve stem moves.

11. The fast oxygen valve according to claim 9, characterized in that, The valve stem assembly further includes a second sealing ring sleeved on the valve stem, the second sealing ring sealing the connection between the second air passage and the second branch air passage and the connection between the second air passage and the third air passage.

12. The fast oxygen valve according to claim 1, characterized in that, The valve stem includes an installation end that is away from the sealing end and extends from the main air passage. The installation end is provided with a pressing structure, the cross-sectional area of ​​which is larger than the cross-sectional area of ​​the valve stem.

13. A medical device, characterized in that, Includes the fast oxygen valve according to any one of claims 1 to 12.

Images