Anesthesia machine with dosing device and anesthesia machine

Abstract

The application belongs to the technical field of medical apparatus and instruments, and particularly relates to a medicine adding device for an anesthesia machine and the anesthesia machine. In the medicine adding device for the anesthesia machine, when the medicine adding tank is installed on the mounting seat and in a gas conveying state, one end of the first valve cylinder away from the first valve core assembly is inserted into the gas inlet of the medicine adding tank, the gas inlet thimble drives the first valve core assembly to move to open the second opening of the first valve cylinder; one end of the second valve cylinder away from the second valve core assembly is inserted into the gas outlet of the medicine adding tank, the gas outlet thimble drives the second valve core assembly to move to open the fourth opening of the second valve cylinder; thereby the gas in the gas channel will enter the medicine adding tank through the first valve cylinder, and after carrying the anesthetic gas in the medicine adding tank, the gas will flow back to the gas channel through the second valve cylinder, and finally flow out from the outlet of the gas channel. The medicine adding tank is detachably installed on the mounting seat, and the operation of installing the medicine adding tank on the mounting seat is simple, thereby facilitating the user to replace different medicine adding tanks.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a drug delivery device for an anesthesia machine and an anesthesia machine. Background Technology

[0002] An anesthesia machine delivers anesthetic drugs into the patient's alveoli via a mechanical circuit. This creates a partial pressure of anesthetic gas, which diffuses into the bloodstream and directly inhibits the central nervous system, resulting in general anesthesia. The delivery of anesthetic gas relies on its internal gas pathway system. This system generates and delivers anesthetic gas to the patient's alveoli. The gas pathway system includes a breathing circuit, through which exhaled gas or unused anesthetic gas can be delivered. The breathing circuit can then re-introduce unused anesthetic gas into the patient's body for use.

[0003] The dosing tank evaporates liquid anesthetics into a gas, which is then introduced into the oxygen delivery line. The oxygen delivered to the patient is then mixed with this anesthetic gas. In existing technology, the dosing tank is usually fixed to the oxygen delivery line, which makes maintenance difficult. Furthermore, some dosing tanks are installed via threaded connections, which presents operational inconvenience. Summary of the Invention

[0004] This invention addresses the technical problem of inconvenient operation caused by installing the dosing tank on the oxygen delivery pipeline in the prior art, and provides a dosing device for an anesthesia machine and an anesthesia machine.

[0005] In view of the above technical problems, the present invention provides a drug delivery device for an anesthesia machine, including a drug delivery tank and an air passage structure. The drug delivery tank is provided with an air inlet and an air outlet. An air inlet pin is provided inside the air inlet, and an air outlet pin is provided on the inner wall of the air outlet.

[0006] The air circuit structure includes a first switching valve, a second switching valve, and a mounting base. The mounting base is provided with an air passage and a first air passage and a second air passage, both of which are connected to the air passage. The first switching valve includes a first valve cylinder and a first valve core assembly. The first valve cylinder is provided with a first inner hole and a first opening and a second opening, both of which are connected to the first inner hole. The first valve core assembly is slidably installed in the first air passage and the first inner hole to block or open the second opening.

[0007] The second switching valve includes a second valve cylinder and a second valve core assembly. The second valve cylinder has a second inner hole and a third opening and a fourth opening that are both connected to the second inner hole. The second valve core assembly is slidably installed in the second air passage and the second inner hole to block or open the fourth opening.

[0008] When the dosing canister introduces anesthetic gas into the airway, the end of the first valve cylinder away from the first valve core assembly passes through the first opening and is inserted into the air inlet. The air inlet needle drives the first valve core assembly to move, thereby opening the second opening. The end of the second valve cylinder away from the second valve core assembly passes through the third opening and is inserted into the air outlet. The air outlet needle drives the second valve core assembly to move, thereby opening the fourth opening.

[0009] Optionally, the first valve core assembly includes a first elastic element, a first piston, and a first seal mounted on the first piston. The first seal is used to block or open the second opening. The first piston is slidably mounted in the first air passage and the first inner hole through the first elastic element. The air intake pin is used to drive the first piston to move.

[0010] The second valve core assembly includes a second elastic element, a second piston, and a second seal mounted on the second piston. The second seal is used to block or open the fourth opening. The second piston is slidably mounted in the second air passage and the second inner hole via the second elastic element. The air inlet pin is used to drive the second piston to move.

[0011] Optionally, the first piston includes a third elastic element, a first slide rod, and a first sliding member with a first sliding hole; the first seal is mounted on the first sliding member; the first slide rod is slidably inserted into the first sliding hole; the third elastic element is sleeved on the first slide rod, and the opposite ends of the third elastic element abut against the first abutting portion of the first slide rod and the first sliding member, respectively; the first sliding member is slidably mounted in the first air passage and the first inner hole through the first elastic element; the air intake pin is used to drive the first slide rod to move;

[0012] The second piston includes a fourth elastic element, a second slide rod, and a second sliding member with a second sliding hole. The second seal is mounted on the second sliding member. The second slide rod is slidably inserted into the second sliding hole. The fourth elastic element is sleeved on the second slide rod, and the opposite ends of the fourth elastic element abut against the second abutment portion of the second slide rod and the second sliding member, respectively. The second sliding member is slidably mounted in the second air passage and the second inner hole through the second elastic element. The air outlet pin is used to drive the second slide rod to move.

[0013] Optionally, the first air passage includes a first air hole and a second air hole, the inner diameter of the first air passage is larger than the inner diameter of the second air hole, and the opposite ends of the second air hole are respectively connected to the first air hole and the air passage; the first valve cylinder is inserted into the first air hole, and the first sealing element is used to block the second opening or the second air hole;

[0014] The second air passage includes a third air hole and a fourth air hole. The inner diameter of the third air passage is larger than the inner diameter of the fourth air hole. The two ends of the fourth air hole are respectively connected to the third air hole and the air passage. The second valve cylinder is inserted into the third air hole, and the second sealing element is used to block the fourth opening or the fourth air hole.

[0015] Optionally, a connecting arm is provided on the inner wall of the outlet of the gas channel, and a guide hole is provided on the connecting arm; the gas path structure further includes a one-way diaphragm and a connecting rod connecting the one-way diaphragm, the connecting rod being inserted into the guide hole, and the one-way diaphragm being used to control the gas flow direction at the outlet of the gas channel.

[0016] Optionally, the anesthesia machine drug delivery device further includes a locking assembly, which includes a locking rod, a guide post, a fifth elastic element, and an elastic chain; the mounting base is provided with a plug-in hole, and the elastic chain is installed in the plug-in hole; the locking rod is provided with a guide hole group and a spiral hole, the guide hole group including a vertical hole arranged along the axial direction of the locking rod and a side hole arranged along the radial direction of the locking rod, the vertical hole communicating with the side hole;

[0017] The dosing tank is provided with a rotating hole, and the locking rod is installed in the rotating hole through the fifth elastic element; one end of the guide post is installed on the dosing tank, and the other end of the guide post is inserted into the guide hole group;

[0018] When the dosing tank introduces anesthetic gas into the gas channel, the locking rod is inserted into the insertion hole, and the elastic chain is screwed into the spiral hole.

[0019] Optionally, the dosing tank includes a base and a tank body mounted on the base, the air inlet and the air outlet are both located on the base, and the tank body is provided with a storage space for storing anesthetics;

[0020] The anesthesia machine drug delivery device also includes a starting mechanism, which includes a rotating arm and a sixth elastic element. The rotating arm is rotatably mounted on the base. One end of the rotating arm is provided with a first trigger part, and the other end of the rotating arm extends into a second trigger part in the storage space.

[0021] When the first triggering part comes into contact with the mounting base, the second triggering part triggers the canister to release the anesthetic.

[0022] Optionally, the anesthesia machine drug delivery device includes two drug delivery tanks, each of which includes a tank body and a base; the gas path structure includes two first switching valves and two second switching valves, and the mounting base is provided with two first air passages and two second air passages, both of which are connected to the gas passages; both bases are detachably mounted on the mounting base.

[0023] Optionally, the anesthesia machine drug delivery device further includes two interlocking mechanisms, one of which is installed on each of the bases;

[0024] The base is provided with a first sliding through hole and a second sliding through hole. The interlocking mechanism includes a first locking pin, a second locking pin, a seventh elastic element sleeved on the first locking pin, and an eighth elastic element sleeved on the second locking pin. The first locking pin is slidably installed in the first sliding through hole, and the second locking pin is slidably installed in the second sliding through hole. The opposite sides of the rotating arm are respectively provided with a first inclined surface and a second inclined surface, and the first locking pin and the second locking pin abut against the first inclined surface and the second inclined surface, respectively.

[0025] When the first trigger part abuts against the mounting base, the first inclined surface causes the first locking pin to move away from the first inclined surface in the first sliding through hole, and the second inclined surface causes the second locking pin to move away from the second inclined surface in the second sliding through hole.

[0026] Another embodiment of the present invention provides an anesthesia machine, characterized in that it includes the above-described drug administration device for anesthesia machines.

[0027] In this invention, when the dosing tank is installed on the mounting base and in the gas supply state, the end of the first valve cylinder away from the first valve core assembly passes through the first opening and is inserted into the air inlet. The air inlet pin drives the first valve core assembly to move, thereby opening the second opening. The end of the second valve cylinder away from the second valve core assembly passes through the third opening and is inserted into the air outlet. The air outlet pin drives the second valve core assembly to move, thereby opening the fourth opening. Thus, the gas in the gas passage enters the dosing tank through the first valve cylinder, carries the anesthetic gas in the dosing tank, and flows back into the gas passage through the second valve cylinder, finally flowing out from the outlet of the gas passage. The dosing tank is detachably installed on the mounting base, and the operation of installing the dosing tank on the mounting base is simple, thus facilitating the user to replace different dosing tanks. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of a drug delivery device for an anesthesia machine provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the base of the drug delivery device for an anesthesia machine provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the gas path structure of a drug delivery device for an anesthesia machine according to an embodiment of the present invention;

[0032] Figure 4 This is a front view of the gas path structure of a drug delivery device for an anesthesia machine provided in an embodiment of the present invention;

[0033] Figure 5 yes Figure 4 Sectional view along the middle AA direction;

[0034] Figure 6 yes Figure 4 Sectional view along the BB direction;

[0035] Figure 7 yes Figure 4 A cross-sectional view along the CC direction;

[0036] Figure 8 This is a schematic diagram of the structure of the base of the drug delivery device for an anesthesia machine provided in an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the structure of the locking assembly of the drug delivery device for an anesthesia machine according to an embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the starting mechanism and interlocking mechanism of the drug delivery device for an anesthesia machine provided in an embodiment of the present invention.

[0039] The reference numerals in the accompanying drawings are as follows:

[0040] 1. Dosing tank; 11. Air inlet; 111. Air inlet pin; 12. Air outlet; 121. Air outlet pin; 13. Base; 14. Tank body; 2. Gas path structure; 21. First switching valve; 211. First valve cylinder; 2111. First inner hole; 212. First valve core assembly; 2121. First elastic element; 2122. Third elastic element; 2123. First slide rod; 2124. First sliding element; 2125. First sealing element; 22. Second switching valve; 221. Second valve cylinder; 2211. Second inner hole; 222. Second valve core assembly; 2221. Second elastic element; 2222. Fourth elastic element; 2223. Second slide rod; 2224. Second sliding element; 2225. Second sealing element;

[0041] 23. Mounting base; 231. Air passage; 232. First air passage; 233. Second air passage; 234. Insertion hole; 24. One-way diaphragm; 3. Locking assembly; 31. Locking rod; 311. Guide hole group; 312. Spiral hole; 32. Guide post; 33. Fifth elastic element; 34. Elastic chain; 4. Starting mechanism; 41. Rotating arm; 411. First trigger part; 412. Second trigger part; 42. Sixth elastic element; 5. Interlocking mechanism; 51. First locking post; 52. Second locking post; 53. Seventh elastic element; 54. Eighth elastic element. Detailed Implementation

[0042] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0043] It should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the present invention.

[0044] like Figures 1 to 5 As shown, an embodiment of the present invention provides a drug delivery device for an anesthesia machine, including a drug delivery tank 1 and a gas path structure 2. The drug delivery tank 1 is provided with an air inlet 11 and an air outlet 12. An air inlet pin 111 is provided inside the air inlet 11, and an air outlet pin 121 is provided on the inner wall of the air outlet 12. It can be understood that the air inlet pin 111 is located in the middle of the air inlet 11, and the air outlet pin 121 is located in the middle of the air outlet 12. An amplifier is provided inside the drug delivery tank 1, which can convert liquid or solid anesthesia in the drug delivery tank 1 into gas.

[0045] The air passage structure 2 includes a first switching valve 21, a second switching valve 22, and a mounting base 23. The mounting base 23 is provided with an air passage 231 and a first air passage 232 and a second air passage 233, both of which are connected to the air passage 231. The first switching valve 21 includes a first valve cylinder 211 and a first valve core assembly 212. The first valve cylinder 211 is provided with a first inner hole 2111 and a first opening (upper opening) and a second opening (lower opening), both of which are connected to the first inner hole 2111. The first valve core assembly 212 is slidably installed in the first air passage 232 and the first inner hole 2111 to block or open the second opening. It can be understood that the first opening is located at the top of the first valve cylinder 211, the second opening is located at the bottom of the first valve cylinder 211, the lower part of the first valve cylinder 211 is installed in the first air passage 232, and the other end of the first valve cylinder 211 extends out from the upper opening of the first air passage 232.

[0046] The second switching valve 22 includes a second valve cylinder 221 and a second valve core assembly 222. The second valve cylinder 221 is provided with a second inner hole 2211 and a third opening (upper opening) and a fourth opening (lower opening) that are both connected to the second inner hole 2211. The second valve core assembly 222 is slidably installed in the second air passage 233 and the second inner hole 2211 to block or open the fourth opening. Understandably, the third opening is located at the top of the second valve cylinder 221, the fourth opening is located at the bottom of the second valve cylinder 221, the lower part of the second valve cylinder 221 is installed in the second air passage 233, and the other end of the second valve cylinder 221 extends out from the upper opening of the second air passage 233.

[0047] When the dosing tank 1 introduces anesthetic gas into the airway, the end of the first valve cylinder 211 away from the first valve core assembly 212 passes through the first opening and is inserted into the air inlet 11. The air inlet pin 111 drives the first valve core assembly 212 to move, thereby opening the second opening. The end of the second valve cylinder 221 away from the second valve core assembly 222 passes through the third opening and is inserted into the air outlet 12. The air outlet pin 121 drives the second valve core assembly 222 to move, thereby opening the fourth opening. Understandably, the dosing tank 1 is mounted on the mounting base 23. The top of the first valve cylinder 211 extends into the air inlet 11. The air inlet pin 111 drives the first valve core assembly 212 to move downward to open the second opening. Thus, the gas in the air passage 231 enters the first inner hole 2111 of the first valve cylinder 211 through the first air passage 232 and the second opening. The gas in the first inner hole 2111 then enters the dosing tank 1 through the first opening. At the same time, the top of the first valve cylinder 211 extends into the air outlet 12. The air outlet pin 121 drives the second valve core assembly 222 to move downward to open the fourth opening. The gas carrying anesthetic in the dosing tank 1 flows into the second inner hole 2211 through the third opening. The gas in the second inner hole 2211 then enters the air passage 231 through the fourth opening and finally flows out from the outlet of the air passage 231.

[0048] When the dosing canister 1 is not installed on the mounting base 23, or when the dosing canister 1 is only attached to the mounting base 23 (the first valve cylinder 211 is inserted into the air inlet 11, but the air inlet pin 111 does not drive the first valve core assembly 212 to move down; the second valve cylinder 221 is inserted into the air outlet 12, but the air outlet pin 121 does not drive the second valve core assembly 222 to move down), the first valve core assembly 212 blocks the second opening, and the second valve core assembly 222 blocks the fourth opening. The gas in the air passage will not flow out through the first airway 232 and the second airway 233. At this time, the gas in the air passage can be output without adding anesthetic. At this time, the anesthetic is equivalent to a ventilator.

[0049] In this invention, when the dosing tank 1 is mounted on the mounting base 23 and in the gas supply state, the end of the first valve cylinder 211 away from the first valve core assembly 212 passes through the first opening and is inserted into the air inlet 11. The air inlet pin 111 drives the first valve core assembly 212 to move, thereby opening the second opening. The end of the second valve cylinder 221 away from the second valve core assembly 222 passes through the third opening and is inserted into the air outlet 12. The air outlet pin 121 drives the second valve core assembly 222 to move, thereby opening the fourth opening. Thus, the gas in the gas passage 231 enters the dosing tank 1 through the first valve cylinder 211, and after carrying the anesthetic gas in the dosing tank 1, flows back to the gas passage 231 through the second valve cylinder 221, and finally flows out from the outlet of the gas passage 231. The dosing tank 1 is detachably mounted on the mounting base 23, and the operation of mounting the dosing tank 1 on the mounting base 23 is simple, thus facilitating the user to replace different dosing tanks 1.

[0050] In one embodiment, such as Figure 6 As shown, the first valve core assembly 212 includes a first elastic element 2121, a first piston, and a first sealing element 2125 mounted on the first piston. The first sealing element 2125 is used to block or open the second opening. The first piston is slidably mounted in the first air passage 232 and the first inner hole 2111 via the first elastic element 2121. The air intake pin 111 is used to drive the first piston to move. It can be understood that the first sealing element 2125 includes, but is not limited to, sealing rings, etc., and the first elastic element 2121 includes, but is not limited to, springs, etc. The first sealing element 2125 can be sleeved on the bottom of the first piston.

[0051] Specifically, when the first elastic member 2121 is in a free state, the first sealing member 2125 blocks the second opening; when the air intake pin 111 drives the first piston to move downward, the first piston drives the first sealing member 2125 to move downward to open the second opening, and the downward-moving first piston will compress the first elastic member 2121.

[0052] like Figure 7As shown, the second valve core assembly 222 includes a second elastic element 2221, a second piston, and a second seal 2225 mounted on the second piston. The second seal 2225 is used to block or open the fourth opening. The second piston is slidably mounted in the second air passage 233 and the second inner hole 2211 via the second elastic element 2221. The air inlet pin 111 is used to drive the second piston to move. It is understood that the second seal 2225 includes, but is not limited to, a sealing ring, etc., and the second elastic element 2221 includes, but is not limited to, a spring, etc.; the second seal 2225 can be sleeved on the bottom of the first piston.

[0053] Specifically, when the second elastic member 2221 is in a free state, the second sealing member 2225 blocks the fourth opening; when the venting pin 121 drives the second piston to move downward, the second piston drives the second sealing member 2225 to move downward to open the fourth opening, and the moving second piston will compress the second elastic member 2221.

[0054] In this embodiment, the first switching valve 21 and the second switching valve 22 have simple structures and low manufacturing costs.

[0055] In one embodiment, such as Figure 5 As shown, the first piston includes a third elastic element 2122, a first slide rod 2123, and a first sliding element 2124 with a first sliding hole. The first sealing element 2125 is mounted on the first sliding element 2124. The first slide rod 2123 is slidably inserted into the first sliding hole. The third elastic element 2122 is sleeved on the first slide rod 2123, and the opposite ends of the third elastic element 2122 abut against the first abutting part of the first slide rod 2123 and the first sliding element 2124, respectively. The first sliding member 2124 is slidably installed in the first air passage 232 and the first inner hole 2111 via the first elastic member 2121; the air intake pin 111 is used to drive the first sliding rod 2123 to move; it can be understood that the third elastic member 2122 includes, but is not limited to, a spring, etc., the upper end of the first sliding rod 2123 is inserted into the first opening, and the lower end of the first sliding rod 2123 is slidably inserted into the first sliding hole; the first elastic member 2121 is sleeved on the bottom of the first sliding member 2124.

[0056] Specifically, when the first valve cylinder 211 is inserted into the air inlet 11, and the air inlet pin 111 drives the first slide rod 2123 to move downward, the first slide rod 2123 drives the first sliding member 2124 to move downward through the third elastic member 2122, and the first sliding member 2124 drives the first sealing member 2125 to move downward to open the second opening of the first valve cylinder 211; when the air inlet pin 111 leaves the first slide rod 2123, the first elastic member 2121 drives the first sliding member 2124 to move upward to the first sealing member 2125 to seal the second opening, and the third elastic member 2122 drives the first slide rod 2123 to move upward to the initial position.

[0057] The second piston includes a fourth elastic element 2222, a second slide rod 2223, and a second sliding element 2224 with a second sliding hole. The second seal 2225 is mounted on the second sliding element 2224. The second slide rod 2223 is slidably inserted into the second sliding hole. The fourth elastic element 2222 is sleeved on the second slide rod 2223, and the opposite ends of the fourth elastic element 2222 abut against the second abutment portion of the second slide rod 2223 and the second sliding element 2224, respectively. The second sliding element 2224 is slidably installed in the second air passage 233 and the second inner hole 2211 via the second elastic element 2221. The air outlet pin 121 is used to drive the second slide rod 2223 to move. It can be understood that the fourth elastic element 2222 includes, but is not limited to, a spring, etc. The upper end of the second slide rod 2223 is inserted into the third opening, and the lower end of the second slide rod 2223 is slidably inserted into the second sliding hole. The second elastic element 2221 is sleeved on the bottom of the second sliding element 2224.

[0058] Specifically, when the second valve cylinder 221 is inserted into the air outlet 12, and the air outlet pin 121 drives the second slide rod 2223 to move downward, the second slide rod 2223 drives the second sliding member 2224 to move downward through the fourth elastic member 2222, and the second sliding member 2224 drives the second sealing member 2225 to move downward to open the fourth opening of the second valve cylinder 221; when the air outlet pin 121 leaves the second slide rod 2223, the second elastic member 2221 drives the second sliding member 2224 to move upward to the second sealing member 2225 to seal the four openings, and the fourth elastic member 2222 drives the second slide rod 2223 to move upward to the initial position.

[0059] In this embodiment, due to the design of the third elastic element 2122, the downward movement of the first slide rod 2123 and the first sliding element 2124 is asynchronous; due to the design of the fourth elastic element 2222, the downward movement of the second slide rod 2223 and the second sliding element 2224 is asynchronous; when the first valve cylinder 211 is inserted into the air inlet 11 of the dosing tank 1 and the second valve cylinder 221 is inserted into the air outlet 12 of the dosing tank 1, the air inlet pin 111 drives the first slide rod 2123 to move downward, but the first slide rod 2123 does not drive the first sliding element 2124 to move downward, so the first sealing element 2125 is in the state of sealing the second opening of the first valve cylinder 211; and the air outlet pin 121 drives the second slide rod 2223 to move downward, but the second slide rod 2223 does not drive the second sliding element 2224 to move downward, so the second sealing element 2225 is in the state of sealing the fourth opening of the second valve cylinder 221. Only by further pressing down on the dosing canister 1 will the first sliding rod 2123 drive the first sliding member 2124 and the first sealing member 2125 to move down to open the second opening, and the second sliding rod 2223 will drive the second sliding member 2224 and the second sealing member 2225 to move down to open the fourth opening. In this embodiment, the dosing canister 1 can be hung on the mounting base 23, and the air inlet 11 and air outlet 12 of the dosing canister 1 are not connected to the air passage 231; only by further pressing down on the dosing canister 1 will the air inlet 11 and air outlet 12 of the dosing canister 1 connect to the air passage 231, thereby improving the convenience of adding anesthetic to the air passage 231.

[0060] In one embodiment, such as Figure 5 As shown, the first air passage 232 includes a first air hole and a second air hole. The inner diameter of the first air passage 232 is larger than the inner diameter of the second air hole. The two ends of the second air hole are respectively connected to the first air hole and the air passage 231. The first valve cylinder 211 is inserted into the first air hole, and the first sealing member 2125 is used to block the second opening or the second air hole. It can be understood that the first air hole is located above the second air hole, and the first sliding member 2124 drives the first sealing member 2125 to move in the first air hole. The outer diameter of the first sealing member 2125 is larger than the inner diameter of the first inner hole 2111, and the outer diameter of the first sealing member 2125 is smaller than the inner diameter of the first air hole, so that a first transition space is formed between the outer wall of the first sealing member 2125 and the inner wall of the first air hole. The outer wall of the first valve cylinder 211 is sealed to the inner wall of the first air hole, and the second air hole is connected to the first inner hole 2111 through the first transition space.

[0061] like Figure 6As shown, the second air passage 233 includes a third air hole and a fourth air hole. The inner diameter of the third air passage is larger than the inner diameter of the fourth air hole. The opposite ends of the fourth air hole are connected to the third air hole and the air passage 231, respectively. The second valve cylinder 221 is inserted into the third air hole, and the second sealing member 2225 is used to block the fourth opening or the fourth air hole. Understandably, the third air hole is located above the fourth air hole, and the second sliding member 2224 drives the second sealing member 2225 to move in the third air hole. The outer diameter of the second sealing member 2225 is larger than the inner diameter of the second inner hole 2211, and the outer diameter of the second sealing member 2225 is smaller than the inner diameter of the third air hole. Thus, a second transition space is formed between the outer wall of the second sealing member 2225 and the inner wall of the third air hole. The outer wall of the second valve cylinder 221 is sealed to the inner wall of the third air hole, and the fourth air hole is connected to the second inner hole 2211 through the second transition space.

[0062] In this embodiment, the mounting base 23 has a simple structure and low manufacturing cost.

[0063] In one embodiment, such as Figure 7 As shown, the inner wall of the outlet of the air passage 231 is provided with a connecting arm (not shown in the figure), and the connecting arm is provided with a guide hole (not shown in the figure). The air passage structure 2 also includes a one-way diaphragm 24 and a connecting rod (not shown in the figure) connecting the one-way diaphragm 24. The connecting rod is inserted into the guide hole, and the one-way diaphragm 24 is used to control the gas flow direction at the outlet of the air passage 231. Understandably, the connecting arm spans across the outlet of the air passage 231, and the one-way diaphragm 24 is located outside the air passage 231. When the air passage 231 outputs gas through its outlet, the gas will cause the one-way diaphragm 24 to slide away from the outlet of the air passage 231, thereby opening the outlet of the air passage 231. When the patient exhales into the air passage 231 through the outlet, the gas will cause the one-way diaphragm 24 to move to block the outlet of the air passage 231, thereby ensuring the one-way flow characteristic of the gas in the air passage 231.

[0064] In one embodiment, such as Figure 3 , Figure 8 as well as Figure 9As shown, the anesthesia machine drug delivery device also includes a locking assembly 3, which includes a locking rod 31, a guide post 32, a fifth elastic element 33, and an elastic chain 34. The mounting base 23 is provided with a insertion hole 234, and the elastic chain 34 is installed in the insertion hole 234. The locking rod 31 is provided with a guide hole group 311 and a spiral hole 312. The guide hole group 311 includes a vertical hole arranged along the axial direction of the locking rod 31 and a side hole arranged along the radial direction of the locking rod 31, and the vertical hole communicates with the side hole. It can be understood that the guide hole group 311 is provided on the side wall of the locking rod 31, and the spiral hole 312 is provided at the bottom of the locking rod 31. The elastic chain 34 can be suspended in the insertion hole 234 by fasteners such as screws and bolts.

[0065] The dosing tank 1 is provided with a rotating hole, and the locking rod 31 is installed in the rotating hole through the fifth elastic element 33; one end of the guide post 32 is installed on the dosing tank 1, and the other end of the guide post 32 is inserted into the guide hole group 311; it can be understood that the fifth elastic element 33 includes, but is not limited to, springs, etc., and the fifth elastic element 33 can assist the locking rod 31 to reset in the rotating hole (that is, when the locking rod 31 is not under pressure and is in the unlocked state, the fifth elastic element 33 drives the locking rod 31 to move upward to the reset state); the guide rod slides in the guide hole group 311, so that the guide hole group 311 can control the direction of movement of the locking rod 31 through the guide post 32.

[0066] When the dosing tank 1 inputs anesthetic gas into the gas channel 231, the locking rod 31 is inserted into the insertion hole 234, and the elastic chain 34 is screwed into the spiral hole 312. Specifically, firstly, the dosing tank 1 is hung on the mounting base 23, the first valve cylinder 211 is inserted into the air inlet 11 of the dosing tank 1, and the second valve cylinder 221 is inserted into the air outlet 12 of the dosing tank 1. At this time, the dosing tank 1 does not input anesthetic into the gas channel 231; then the dosing tank 1 is pressed down.

[0067] Medicine container 1, the guide post 32 slides upward in the vertical hole, the elastic chain 34 is inserted into the screw hole 312, and the air inlet pin 111 drives the first valve core assembly 212 to open the first valve.

[0068] The second opening of the cylinder 211 is opened, and the air outlet pin 121 drives the second valve core assembly 222 to open the fourth opening of the second valve cylinder 221; finally, the locking rod 31 is rotated, the guide post 32 is screwed into the side hole, and the elastic chain 34 is also screwed into the spiral hole 312, thereby completing the dosing tank.

[0069] 1. The dosing tank 1 is installed on the mounting base 23, and the dosing tank 1 adds anesthetic 0 into the gas passage 231. In this embodiment, the design of the locking component 3 improves the installation efficiency of the dosing tank 1.

[0070] The stability of the mounting base 23 ensures the smoothness and stability of the dosing tank 1 adding anesthetic into the air channel 231.

[0071] In one embodiment, such as Figure 1 As shown, the dosing tank 1 includes a base 13 and a device mounted on the base.

[0072] The canister 14 on the base 13 has both an air inlet 11 and an air outlet 12 located on the base 13. The canister 14 also has a storage space (not shown in the figure) for storing anesthetics. It can be understood that...

[0073] The tank 14 and the base 13 are integrally formed structural components; the air inlet 11 and the air outlet 12 are both connected to the storage space.

[0074] like Figure 8 and Figure 10 As shown, the anesthesia machine drug delivery device also includes a starting mechanism 4.

[0075] The actuator 4 includes a rotating arm 41 and a sixth elastic element 42. The rotating arm 41 is rotatably mounted on the base 130. One end of the rotating arm 41 is provided with a first trigger part 411, and the other end of the rotating arm 41 extends into the base 130.

[0076] The second trigger part 412 in the storage space; understandably, the rotating arm 41 is equivalent to a rocker, the sixth elastic element 42 includes but is not limited to springs, and the opposite ends of the rotating arm 41 are both free ends.

[0077] When the first trigger part 411 abuts against the mounting base 23 (protrusion, etc.), the second trigger part 412 triggers the canister 14 to release the anesthetic. Specifically, when the elastic chain 34 is screwed into the canister 14...

[0078] When the locking rod 31's spiral hole 312 is engaged, the mounting base 23 will drive the rotating arm 41 to rotate via the first trigger part 411. The second trigger part 412 of the rotating arm 41 will trigger the canister 14, thereby causing the storage space of the canister 14 to release the anesthetic. It should be noted that when the elastic chain 34 is not screwed into the spiral hole 312 of the locking rod 31, although the air passage 231 connects the air inlet 11 and air outlet 12 of the dosing canister 1, the anesthetic inside the dosing canister 1 will not be released. Only when the second trigger part 412 of the rotating arm 41 triggers the triggering element (electronic switch, etc.) inside the dosing canister 1 will the dosing canister 1 add anesthetic to the air passage 231. In this embodiment, the design of the starting mechanism 4 further ensures the stability of the dosing canister 1 adding anesthetic to the air passage 231 and avoids the accident of leakage when the dosing canister 1 adds anesthetic to the air passage 231.

[0079] In one embodiment, such as Figure 1 and Figure 2 As shown, the anesthesia machine drug delivery device includes two drug delivery canisters 1, each of which includes a canister body 14 and a base 13. The gas path structure 2 includes two first switching valves 21 and two second switching valves 22. The mounting base 23 is provided with two first airways 232 and two second airways 233, all of which are connected to the gas passage 231. Both bases 13 are detachably mounted on the mounting base 23. It is understood that each first airway 232 is equipped with a first switching valve 21, and each second airway 233 is equipped with a second switching valve 22. The two drug delivery canisters 1 have identical structures, and both canisters 1 can be simultaneously mounted on the mounting base 23. However, the two canisters 1 cannot be used simultaneously; that is, only one drug delivery canister 1 can be used to add anesthetic to the gas passage 231 at a time. In this embodiment, the design of two drug delivery canisters 1 improves the applicability of the anesthesia machine drug delivery device.

[0080] In one embodiment, such as Figure 8 and Figure 10 As shown, the anesthesia machine drug delivery device also includes two interlocking mechanisms 5, and one of the interlocking mechanisms 5 is installed on each of the bases 13;

[0081] The base 13 is provided with a first sliding through hole (not shown in the figure) and a second sliding through hole (not shown in the figure). The interlocking mechanism 5 includes a first locking pin 51, a second locking pin 52, a seventh elastic element 53 sleeved on the first locking pin 51, and an eighth elastic element 54 sleeved on the second locking pin 52. The first locking pin 51 is slidably installed in the first sliding through hole, and the second locking pin 52 is slidably installed in the second sliding through hole. The opposite sides of the rotating arm 41 are respectively provided with a first inclined surface and a second inclined surface, and the first locking pin 51 and the second locking pin 52 abut against the first inclined surface and the second inclined surface, respectively. It can be understood that the seventh elastic element 53 and the eighth elastic element 54 both include but...

[0082] Not limited to springs, etc., the seventh elastic element 53 is used to drive the first locking pin 51 to reset, and the eighth elastic element 54 is used to drive the second locking pin 52 to reset; the first locking pin 51 and the second locking pin 52...

[0083] The column 52 is located on both sides of the rotating arm 41.

[0084] When the first trigger part 411 abuts against the mounting base 23, the first inclined surface drives the first locking pin 51 to move away from the first inclined surface in the first sliding through hole, and the...

[0085] The second inclined surface causes the second locking pin 52 to move in the second sliding through hole toward the side away from the second inclined surface 0.

[0086] Specifically, when the first trigger part 411 of the rotating arm 41 abuts against the mounting base 23, the first trigger part 411 will drive the rotating arm 41 to rotate, and the rotating arm 41 will drive the first locking pin 51 to move away from the first inclined surface via the first inclined surface (that is, the first locking pin 51 moves away from the first inclined surface).

[0087] (The second locking pin 52 extends out of the first sliding hole), and the rotating arm 41 drives the second locking pin 52 to move away from the second inclined surface via the second inclined surface (that is, the second locking pin 52 extends out of the first sliding hole).

[0088] The extended first locking pin 51 or second locking pin 52 (as described in the second sliding hole) will compress the extension space of the first locking pin 51 or second locking pin 52 of the other dosing tank 1; that is, the space between two adjacent bases 13 on the mounting base 23 can only accommodate one first locking pin 51 or second locking pin 52.

[0089] The two locking pins 52 extend out, preventing two of the first locking pins 51 or the second locking pin 52 from extending out. Only one dosing tank 1 can be allowed to add anesthetic to the air passage 231 at a time from the mounting base 23.

[0090] This avoids the user's mistake of adding anesthetic to the airway 231 at the same time by adding two dosing tanks, thus improving the safety of the dosing device for the anesthesia machine.

[0091] Another embodiment of the present invention provides an anesthesia machine, including the above-described anesthesia machine drug administration device.

[0092] The above are merely embodiments of the anesthesia machine drug administration device of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drug administration device for an anesthesia machine, characterized in that, The application relates to a medicated tank and a gas path structure, wherein the medicated tank is provided with an air inlet and an air outlet, the inner wall of the air inlet is provided with an air inlet needle, and the inner wall of the air outlet is provided with an air outlet needle. The gas path structure comprises a first switching valve, a second switching valve and a mounting seat, the mounting seat is provided with a gas channel and a first gas channel and a second gas channel which are in communication with the gas channel; the first switching valve comprises a first valve cylinder and a first valve core assembly, the first valve cylinder is provided with a first inner hole and a first opening and a second opening which are in communication with the first inner hole; the first valve core assembly is slidingly installed in the first gas channel and the first inner hole and is used for blocking or conducting the second opening; the second switching valve comprises a second valve cylinder and a second valve core assembly, the second valve cylinder is provided with a second inner hole and a third opening and a fourth opening which are in communication with the second inner hole; the second valve core assembly is slidingly installed in the second gas channel and the second inner hole and is used for blocking or conducting the fourth opening; when the medicated tank inputs anesthetic gas into the gas channel, one end of the first valve cylinder away from the first valve core assembly penetrates through the first opening and is inserted into the air inlet, the air inlet needle drives the first valve core assembly to move so as to conduct the second opening; one end of the second valve cylinder away from the second valve core assembly penetrates through the third opening and is inserted into the air outlet, the air outlet needle drives the second valve core assembly to move so as to conduct the fourth opening; the gas in the gas channel enters the medicated tank through the first valve cylinder, carries the anesthetic gas in the medicated tank and then flows back to the gas channel through the second valve cylinder, and finally flows out from the outlet of the gas channel.

2. The anesthetic machine dosing device of claim 1, wherein, the first valve core assembly comprises a first elastic member, a first piston and a first sealing member installed on the first piston, the first sealing member is used for blocking or opening the second opening, the first piston is slidingly installed in the first gas channel and the first inner hole through the first elastic member, and the air inlet needle is used for driving the first piston to move; the second valve core assembly comprises a second elastic member, a second piston and a second sealing member installed on the second piston, the second sealing member is used for blocking or opening the fourth opening, the second piston is slidingly installed in the second gas channel and the second inner hole through the second elastic member, and the air inlet needle is used for driving the second piston to move.

3. The anesthetizing apparatus according to claim 2, wherein the first piston comprises a third elastic member, a first sliding rod and a first sliding member provided with a first sliding hole, the first sealing member is installed on the first sliding member; the first sliding rod is slidingly inserted into the first sliding hole; the third elastic member is sleeved on the first sliding rod, and the opposite ends of the third elastic member are respectively in abutment with a first abutment portion of the first sliding rod and the first sliding member; the first sliding member is slidingly installed in the first gas channel and the first inner hole through the first elastic member; the air inlet needle is used for driving the first sliding rod to move; The second piston comprises a fourth elastic member, a second sliding rod and a second sliding member provided with a second sliding hole, the second sealing member is mounted on the second sliding member, the second sliding rod is slidingly inserted into the second sliding hole, the fourth elastic member is sleeved on the second sliding rod, and opposite ends of the fourth elastic member are respectively in abutment with a second abutment portion of the second sliding rod and the second sliding member, the second sliding member is slidingly mounted in the second air passage and the second inner hole through the second elastic member, and the ejection needle is used to drive the second sliding rod to move.

4. The anesthetic machine dosing device of claim 2, wherein, The first air passage comprises a first air hole and a second air hole, an inner diameter of the first air hole is greater than that of the second air hole, and opposite ends of the second air hole are respectively communicated with the first air hole and the gas passage, the first valve cylinder is inserted into the first air hole, and the first sealing member is used to block the second opening or the second air hole. The second air passage comprises a third air hole and a fourth air hole, an inner diameter of the third air hole is greater than that of the fourth air hole, and opposite ends of the fourth air hole are respectively communicated with the third air hole and the gas passage, the second valve cylinder is inserted into the third air hole, and the second sealing member is used to block the fourth opening or the fourth air hole.

5. The anesthetizing apparatus according to claim 1, wherein An inner wall of an outlet of the gas passage is provided with a connecting arm, the connecting arm is provided with a guide hole, the gas passage structure further comprises a one-way diaphragm and a connecting rod connected with the one-way diaphragm, the connecting rod is inserted into the guide hole, and the one-way diaphragm is used to control a gas flow direction of the outlet of the gas passage.

6. The anesthetizing apparatus according to claim 1, wherein The anesthetic machine medicine adding device further comprises a locking assembly, the locking assembly comprises a locking rod, a guide column, a fifth elastic member and an elastic lock chain, the mounting seat is provided with an insertion hole, the elastic lock chain is mounted in the insertion hole, the locking rod is provided with a guide hole group and a spiral hole, the guide hole group comprises a vertical hole arranged in an axial direction of the locking rod and a side hole arranged in a radial direction of the locking rod, and the vertical hole is communicated with the side hole; The medicine adding tank is provided with a rotating hole, the locking rod is mounted in the rotating hole through the fifth elastic member, one end of the guide column is mounted on the medicine adding tank, and the other end of the guide column is inserted into the guide hole group; When the medicine adding tank inputs anesthetic gas into the gas passage, the locking rod is inserted into the insertion hole, and the elastic lock chain is screwed into the spiral hole.

7. The anesthetizing apparatus according to claim 1, wherein The medicine adding tank comprises a base and a tank body mounted on the base, the gas inlet and the gas outlet are arranged on the base, and the tank body is provided with a storage space for storing anesthetic agents; The anesthetic machine medicine adding device further comprises a starting mechanism, the starting mechanism comprises a rotating arm and a sixth elastic member, the rotating arm is rotationally mounted on the base, one end of the rotating arm is provided with a first trigger portion, and the other end of the rotating arm extends into a second trigger portion in the storage space; When the first trigger portion is in abutment with the mounting seat, the second trigger portion triggers the tank body to release anesthetic agents.

8. The anesthetizing apparatus according to claim 7, wherein The anesthetic machine medicine adding device comprises two medicine adding tanks, each of which comprises a tank body and a base; the gas path structure comprises two first switching valves and two second switching valves, the mounting seat is provided with two first gas channels and two second gas channels, and the two first gas channels and the two second gas channels are communicated with the gas passage; and the two bases are detachably mounted on the mounting seat.

9. The drug delivery device for an anesthetizing apparatus according to claim 8, wherein The anesthetic machine medicine adding device further comprises two interlocking mechanisms, and each base is provided with an interlocking mechanism. The base is provided with a first sliding through hole and a second sliding through hole, the interlocking mechanism comprises a first lock column, a second lock column, a seventh elastic member sleeved on the first lock column and an eighth elastic member sleeved on the second lock column, the first lock column is slidably mounted in the first sliding through hole, the second lock column is slidably mounted in the second sliding through hole, the opposite sides of the rotating arm are respectively provided with a first inclined surface and a second inclined surface, and the first lock column and the second lock column are respectively in abutment with the first inclined surface and the second inclined surface. When the first trigger portion is in abutment with the mounting seat, the first inclined surface drives the first lock column to move in the first sliding through hole away from the side of the first inclined surface, and the second inclined surface drives the second lock column to move in the second sliding through hole away from the side of the second inclined surface.

10. An anaesthesia machine characterised in that, The anesthetic machine medicine adding device comprises two medicine adding tanks, each of which comprises a tank body and a base; the gas path structure comprises two first switching valves and two second switching valves, the mounting seat is provided with two first gas channels and two second gas channels, and the two first gas channels and the two second gas channels are communicated with the gas passage; and the two bases are detachably mounted on the mounting seat.

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