CN116077779A - Dosing device for anesthesia machine and anesthesia machine - Google Patents

Abstract

The invention belongs to the technical field of medical devices, in particular to a dosing device for an anesthesia machine and an anesthesia machine. In the dosing device for anesthesia machines, when the dosing tank is installed on the mounting seat and is in the state of gas delivery, the end of the first valve cylinder away from the first valve core assembly is inserted into the air inlet of the dosing tank, and the air inlet thimble drives the first The valve core assembly moves to lead to the second opening of the first valve cylinder; the end of the second valve cylinder away from the second valve core assembly is inserted into the gas outlet of the dosing tank, and the air outlet thimble drives the second valve core assembly to move to conduct The fourth opening of the second valve cylinder; thus the gas in the gas channel will enter the medicine filling tank through the first valve cylinder, and flow back to the gas channel through the second valve cylinder after carrying the anesthetic gas in the medicine adding tank, Finally, it flows out from the outlet of the gas channel. The medicine adding tank can be detachably installed on the mounting seat, and the operation of installing the medicine adding tank on the mounting seat is simple, so that it is convenient for users to replace different medicine adding tanks.

Description

Dosing device for anesthesia machine and anesthesia machine

technical field

The invention belongs to the technical field of medical devices, in particular to a dosing device for an anesthesia machine and an anesthesia machine.

Background technique

The anesthesia machine can send the anesthetic into the alveoli of the patient through a mechanical circuit, forming a partial pressure of the anesthetic gas, which diffuses into the blood, and directly inhibits the central nervous system, thereby producing the effect of general anesthesia. Anesthesia machine delivery of anesthetic gas depends on its internal gas circuit system, which can generate anesthesia gas and send it to the patient's alveoli. The anesthetic gas can be delivered to the breathing circuit, and the breathing circuit can reintroduce the unused anesthetic gas into the patient's body for application.

The dosing tank is to convert the liquid anesthetic into a gas after evaporation, and then input it into the oxygen delivery pipeline. Finally, the oxygen delivered by the oxygen delivery pipeline to the patient is mixed with anesthetic gas. In the prior art, the dosing tank is usually fixed in the oxygen delivery pipeline, and this fixed installation is not conducive to the maintenance of the dosing tank; in addition, some dosing tanks are installed on the oxygen delivery pipeline through threaded connections , There is the problem of inconvenient operation in the mode of this screw thread installation.

Contents of the invention

Aiming at the technical problem of inconvenient operation in the prior art that the dosing tank is installed on the oxygen delivery pipeline, the invention provides a dosing device for an anesthesia machine and an anesthesia machine.

In view of the above technical problems, an embodiment of the present invention provides a dosing device for an anesthesia machine, including a dosing tank and an air path structure, the dosing tank is provided with an air inlet and an air outlet, and the inside of the air inlet is An air inlet thimble is provided, and an air outlet thimble is arranged on the inner wall of the air outlet;

The air circuit structure includes a first switching valve, a second switching valve and a mounting seat, and the mounting seat is provided with an air channel and a first air channel and a second air channel that are both communicated with the air channel; A switching valve includes a first valve barrel and a first valve core assembly, the first valve barrel is provided with a first inner hole and a first opening and a second opening that communicate with the first inner hole; the first The spool assembly is slidably installed in the first air channel and the first inner hole, and is used to block or communicate with the second opening;

The second switching valve includes a second valve cylinder and a second valve core assembly, and the second valve cylinder is provided with a second inner hole and a third opening and a fourth opening that communicate with the second inner hole; The second spool assembly is slidably installed in the second air passage and the second inner hole, and is used to block or connect the fourth opening;

When the dosing tank inputs anesthetic gas into the airway, the end of the first valve barrel away from the first valve core assembly passes through the first opening and is inserted into the air inlet, and the inlet The air thimble drives the first valve core assembly to move to lead to the second opening; the end of the second valve barrel away from the second valve core assembly passes through the third opening and is inserted into the air outlet , the air outlet thimble drives the second valve core assembly to move, so as to communicate with the fourth opening.

Optionally, the first spool assembly includes a first elastic member, a first piston, and a first sealing member installed on the first piston, and the first sealing member is used to block or open the first Two openings, the first piston is slidably installed in the first air passage and the first inner hole through the first elastic member, and the air inlet thimble is used to drive the first piston to move;

The second spool assembly includes a second elastic member, a second piston, and a second sealing member installed on the second piston, the second sealing member is used to block or open the fourth opening, so The second piston is slidably installed in the second air channel and the second inner hole through the second elastic member, and the air inlet thimble is used to drive the second piston to move.

Optionally, the first piston includes a third elastic member, a first sliding rod, and a first sliding member provided with a first sliding hole, and the first sealing member is installed on the first sliding member; The first sliding rod is slidably 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 connected to the first The first abutting portion of the slide bar abuts against the first sliding member; the first sliding member is slidably installed in the first air channel and the first inner hole through the first elastic member; The air intake thimble is used to drive the first slide bar to move;

The second piston includes a fourth elastic member, a second sliding rod and a second sliding member provided with a second sliding hole, the second sealing member is installed on the second sliding member; the second sliding rod Slidingly inserted into the second sliding hole; the fourth elastic member is sleeved on the second sliding rod, and the opposite ends of the fourth elastic member are respectively connected to the first sliding rod of the second sliding rod. Two abutting parts abut against the second sliding member; the second sliding member is slidably installed in the second air channel and the second inner hole through the second elastic member; the air outlet thimble is used to drive the second slide bar to move.

Optionally, the first air channel includes a first air hole and a second air hole, the inner diameter of the first air channel is larger than the inner diameter of the second air hole, and the opposite ends of the second air hole communicate with the first air hole respectively and air 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 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, and the opposite ends of the fourth air hole are connected to the third air hole and the air passage respectively; The second valve barrel is plugged into the third air hole, and the second sealing member is used to block the fourth opening or the fourth air hole.

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

Optionally, the dosing device for an anesthesia machine further includes a locking assembly, which includes a locking bar, a guide column, a fifth elastic member, and an elastic chain; an insertion hole is provided on the mounting base, so that The elastic chain is installed in the insertion hole; the lock rod is provided with a guide hole group and a screw hole, and the guide hole group includes a vertical hole arranged along the axial direction of the lock rod and a vertical hole along the diameter of the lock rod. To the side hole provided, the vertical hole communicates with the side hole;

The medicine adding tank is provided with a turning hole, and the lock bar is installed in the turning hole through the fifth elastic member; one end of the guide column is installed on the medicine adding tank, and the other end of the guide column is One end is inserted into the set of guide holes;

When the dosing tank inputs anesthetic gas into the gas channel, the locking rod is inserted into the insertion hole, and the elastic chain is screwed into the screw hole.

Optionally, the dosing tank includes a base and a tank body mounted on the base, the air inlet and the gas outlet are both arranged on the base, and the tank body is provided with Storage space for storing anesthetics;

The dosing device for the anesthesia machine also includes a starting mechanism, the starting mechanism includes a rotating arm and a sixth elastic member, the rotating arm is rotatably mounted on the base, and one end of the rotating arm is provided with a first trigger part, the other end of the rotating arm extends into the second trigger part in the storage space;

When the first triggering part abuts against the installation seat, the second triggering part triggers the tank body to release the anesthetic.

Optionally, the dosing device for an anesthesia machine includes two dosing tanks, each of which includes a tank body and a base; the gas path structure includes two The first switching valve and the two second switching valves, the mounting seat is provided with two first air passages and two second air passages, two first air passages and two second air passages The two second air passages are both connected to the air passage; the two bases can be detachably mounted on the installation seat.

Optionally, the dosing device for the anesthesia machine further includes two interlocking mechanisms, one of which is installed on each of the bases;

The base is provided with a first sliding through hole and a second sliding through hole, and the interlocking mechanism includes a first locking cylinder, a second locking cylinder, and a seventh elastic member sleeved on the first locking cylinder And the eighth elastic member sleeved on the second lock cylinder; the first lock cylinder is slidably installed in the first sliding through hole, and the second lock cylinder is slidably installed in the second sliding through hole In the hole; the opposite sides of the rotating arm are respectively provided with a first slope and a second slope, and the first lock cylinder and the second lock cylinder respectively abut against the first slope and the second slope ;

When the first triggering portion abuts against the mounting seat, the first inclined surface drives the first lock column to move in the first sliding hole toward a side away from the first inclined surface, and The second slope drives the second lock cylinder to move toward a side away from the second slope in the second sliding through hole.

Another embodiment of the present invention also provides an anesthesia machine, which is characterized by comprising the above-mentioned dosing device for an anesthesia machine.

In the present invention, when the dosing tank is installed on the installation seat and is in the air delivery 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 In the air inlet, the air inlet thimble drives the first valve core assembly to move to lead to the second opening; the end of the second valve cylinder away from the second valve core assembly passes through the third open and inserted into the air outlet, the air outlet thimble drives the second valve core assembly to move to conduct the fourth opening; thus the gas in the air channel will enter the air channel through the first valve cylinder The anesthetic gas in the medicine filling tank is carried by the medicine filling tank and flows back into the gas channel through the second valve cylinder, and finally flows 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, so that it is convenient for users to replace different medicine adding tanks.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of a dosing device for an anesthesia machine provided by an embodiment of the present invention;

Fig. 2 is a schematic structural view of the base of the dosing device for an anesthesia machine provided by an embodiment of the present invention;

Fig. 3 is a schematic structural view of the gas path structure of the dosing device for an anesthesia machine provided by an embodiment of the present invention;

Fig. 4 is a front view of the gas path structure of the dosing device for an anesthesia machine provided by an embodiment of the present invention;

Fig. 5 is the sectional view of A-A direction in Fig. 4;

Fig. 6 is the sectional view of B-B direction in Fig. 4;

Fig. 7 is the sectional view of C-C direction in Fig. 4;

Fig. 8 is a schematic structural view of the base of the dosing device for an anesthesia machine provided by an embodiment of the present invention;

Fig. 9 is a schematic structural view of the locking assembly of the dosing device for an anesthesia machine provided by an embodiment of the present invention;

Fig. 10 is a structural schematic diagram of the starting mechanism and the interlocking mechanism of the dosing device for an anesthesia machine provided by an embodiment of the present invention.

The reference signs in the instructions are as follows:

1. Dosing tank; 11. Air inlet; 111. Air inlet thimble; 12. Air outlet; 121. Air outlet thimble; 13. Base; 14. Tank body; 2. Gas path structure; 21. First switching valve ; 211, the first valve cylinder; 2111, the first inner hole; 212, the first valve core assembly; 2121, the first elastic member; 2122, the third elastic member; 2123, the first slide rod; 2124, the first slide ; 2125, the first seal; 22, the second switching valve; 221, the second valve barrel; 2211, the second inner hole; 222, the second valve core assembly; 2221, the second elastic member; 2222, the fourth elastic member ; 2223, the second sliding rod; 2224, the second sliding member; 2225, the second sealing member;

23, mounting seat; 231, air channel; 232, first air channel; 233, second air channel; 234, socket hole; 24, one-way diaphragm; 3, locking assembly; 31, locking lever; 311, Guide hole group; 312, screw hole; 32, guide column; 33, fifth elastic member; 34, elastic chain; 4, starting mechanism; 41, rotating arm; 411, first trigger part; 412, second trigger part; 42. The sixth elastic member; 5. The interlocking mechanism; 51. The first locking cylinder; 52. The second locking cylinder; 53. The seventh elastic member; 54. The eighth elastic member.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc. are based on the orientation or position shown in the drawings The relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

As shown in Figures 1 to 5, a dosing device for an anesthesia machine provided by an embodiment of the present invention includes a dosing tank 1 and a gas path structure 2, and the dosing tank 1 is provided with an air inlet 11 and an outlet Air port 12, the inside of the air inlet 11 is provided with an air inlet thimble 111, and the inner wall of the air outlet 12 is provided with an air outlet thimble 121; it can be understood that the air inlet thimble 111 is arranged on the air inlet 11, the gas outlet thimble 121 is arranged in the middle part of the gas outlet 12; the medicine adding tank 1 is provided with a booster, and the booster can convert the liquid or solid anesthesia machine in the medicine adding tank 1 into gas.

The air circuit structure 2 includes a first switching valve 21, a second switching valve 22 and a mounting seat 23, and the mounting seat 23 is provided with an air passage 231 and a first air passage 232 and a first air passage 232 communicating with the air passage 231. The second air passage 233; the first switching valve 21 includes a first valve cylinder 211 and a first valve core assembly 212, and the first valve cylinder 211 is provided with a first inner hole 2111 and communicates with the first inner hole. The first opening (opening at the upper end) and the second opening (opening at the lower end) of the hole 2111; the first spool assembly 212 is slidably installed in the first air channel 232 and the first inner hole 2111 for sealing It can be understood that the first opening is set on the top of the first valve barrel 211, the second opening is set on the bottom of the first valve barrel 211, and the 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 protrudes from the upper opening of the first air passage 232 .

The second switching valve 22 includes a second valve cylinder 221 and a second valve core assembly 222, and the second valve cylinder 221 is provided with a second inner hole 2211 and a third opening communicating with the second inner hole 2211. (upper end opening) and fourth opening (lower end opening); the second spool assembly 222 is slidably installed in the second air passage 233 and the second inner hole 2211 for blocking or conducting the The fourth opening; understandably, the third opening is set on the top of the second valve barrel 221, the fourth opening is set on the bottom of the second valve barrel 221, and the second valve barrel 221 The lower part is installed in the second air channel 233 , and the other end of the second valve barrel 221 protrudes from the upper opening of the second air channel 233 .

When the dosing tank 1 inputs 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 In the process, the air intake thimble 111 drives the first valve core assembly 212 to move to lead through the second opening; the end of the second valve barrel 221 away from the second valve core assembly 222 passes through the The third opening is inserted into the air outlet 12 , and the air outlet thimble 121 drives the second valve core assembly 222 to move to communicate with the fourth opening. It can be understood that the dosing tank 1 is installed on the installation seat 23, the top of the first valve barrel 211 protrudes into the air inlet 11, and the air inlet thimble 111 drives the first valve The core assembly 212 moves down to communicate with the second opening, so that the gas in the air passage 231 enters the first inner part of the first valve barrel 211 through the first air passage 232 and the second opening. In the hole 2111, the gas in the first inner hole 2111 enters the dosing tank 1 through the first opening; at the same time, the top of the first valve cylinder 211 extends into the gas outlet 12 , the gas outlet thimble 121 drives the second valve core assembly 222 to move down to open the fourth opening, and the gas carrying the anesthetic in the dosing tank 1 flows into the second opening through the third opening. In the inner hole 2211 , the gas in the second inner hole 2211 enters the gas channel 231 through the fourth opening, and finally flows out from the outlet of the gas channel 231 .

When the dosing tank 1 is not installed on the mounting seat 23, or the dosing tank 1 is only hung on the mounting seat 23 (the first valve cylinder 211 is inserted into the air inlet 11, but the The air inlet thimble 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 thimble 121 does not drive the second valve core assembly 222 to move down ), the first spool assembly 212 blocks the second opening, and the second spool assembly 222 blocks the fourth opening, and the gas in the gas passage will not pass through the first The air channel 232 and the second air channel 233 flow out, and at this time, the gas in the air channel can be output without adding an anesthetic; at this time, the anesthetic is equivalent to a ventilator.

In the present invention, when the dosing tank 1 is installed on the installation seat 23 and is in the air delivery state, the end of the first valve barrel 211 away from the first valve core assembly 212 passes through the first opening And inserted into the air inlet 11, the air inlet thimble 111 drives the first valve core assembly 212 to move to conduct the second opening; the second valve cylinder 221 is far away from the second valve core One end of the assembly 222 passes through the third opening and is inserted into the air outlet 12, and the air outlet thimble 121 drives the second valve core assembly 222 to move to connect the fourth opening; thus the air channel The gas in 231 will enter the medicine filling tank 1 through the first valve cylinder 211, and carry the anesthetic gas in the medicine filling tank 1, and then flow back to the gas channel 231 through the second valve cylinder 221 , and finally flow out from the outlet of the gas passage 231. The medicine adding tank 1 is detachably installed on the mounting seat 23 , and the operation of installing the medicine adding tank 1 on the mounting seat 23 is simple, so that it is convenient for users to replace different medicine adding tanks 1 .

In one embodiment, as shown in FIG. 6, the first spool assembly 212 includes a first elastic member 2121, a first piston, and a first sealing member 2125 installed on the first piston. The first The sealing member 2125 is used to block or open the second opening, and the first piston is slidably installed in the first air passage 232 and the first inner hole 2111 through the first elastic member 2121 , the The intake thimble 111 is used to drive the first piston to move; understandably, the first sealing member 2125 includes but not limited to a sealing ring, and the first elastic member 2121 includes but not limited to a spring; the first A seal 2125 can be sleeved on the bottom of the first piston.

Specifically, when the first elastic member 2121 is in a free state, the first sealing member 2125 blocks the second opening; when the intake thimble 111 drives the first piston down, the The first piston drives the first sealing member 2125 to move down to open the second opening, and the first piston moving down compresses the first elastic member 2121 .

As shown in FIG. 7, the second spool assembly 222 includes a second elastic member 2221, a second piston, and a second sealing member 2225 installed on the second piston, and the second sealing member 2225 is used for sealing to block or open the fourth opening, the second piston is slidably installed in the second air channel 233 and the second inner hole 2211 through the second elastic member 2221, and the air inlet thimble 111 is used for Drive the second piston to move. It can be understood that the second sealing member 2225 includes but not limited to a sealing ring and the like, and the second elastic member 2221 includes but not limited to a spring and the like; the second sealing member 2225 can be sleeved on the first piston bottom.

Specifically, when the second elastic member 2221 is in a free state, the second sealing member 2225 blocks the fourth opening; when the air outlet thimble 121 drives the second piston down, the first The second piston drives the second sealing member 2225 to move down to open the fourth opening, and the second piston moving down compresses the second elastic member 2221 .

In this embodiment, the structure of the first switching valve 21 and the second switching valve 22 is simple and the manufacturing cost is low.

In one embodiment, as shown in FIG. 5, the first piston includes a third elastic member 2122, a first sliding rod 2123, and a first sliding member 2124 with a first sliding hole. The first sealing member 2125 Installed on the first sliding member 2124; the first sliding rod 51 and the first sliding rod 2123 are slidably inserted into the first sliding hole; the third elastic member 2122 is sleeved on the first sliding on the rod 2123, and the opposite ends of the third elastic member 2122 respectively abut against the first abutting portion of the first sliding rod 2123 and the first sliding member 2124; the first sliding member 2124 passes through The first elastic member 2121 is slidably installed in the first air passage 232 and the first inner hole 2111; the air intake thimble 111 is used to drive the first sliding rod 2123 to move; understandably, the The third elastic member 2122 includes but 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 .

Specifically, when the first valve cylinder 211 is plugged into the air inlet 11 and the air inlet thimble 111 drives the first sliding rod 2123 to move down, the first sliding rod 2123 passes through the The third elastic member 2122 drives the first sliding member 2124 to move down, and the first sliding member 2124 drives the first sealing member 2125 to move down to open the second opening of the first valve cylinder 211; when the When the intake thimble 111 leaves the first sliding rod 2123, the first elastic member 2121 drives the first sliding member 2124 to move up to the first sealing member 2125 to seal the second opening, and the first The three elastic members 2122 drive the first sliding bar 2123 to move up to the initial position.

The second piston includes a fourth elastic member 2222, a second sliding rod 2223, and a second sliding member 2224 provided with a second sliding hole, and the second sealing member 2225 is installed on the second sliding member 2224; The second sliding rod 2223 is slidably inserted into the second sliding hole; the fourth elastic member 2222 is sleeved on the second sliding rod 2223, and the opposite ends of the fourth elastic member 2222 are respectively Abut against the second abutting portion of the second sliding rod 2223 and the second sliding piece 2224; the second sliding piece 2224 is slidably installed on the second air channel 233 through the second elastic piece 2221 and in the second inner hole 2211; the air outlet thimble 121 is used to drive the second slide bar 2223 to move. It can be understood that the fourth elastic member 2222 includes but not limited to springs, etc., the upper end of the second sliding rod 2223 is inserted into the third opening, and the lower end of the second sliding rod 2223 is slidably inserted into the third opening. In the second sliding hole; the second elastic member 2221 is sleeved on the bottom of the second sliding member 2224 .

Specifically, when the second valve cylinder 221 is plugged into the air outlet 12 and the air outlet thimble 121 drives the second sliding rod 2223 to move down, the second sliding rod 2223 passes through the fourth The elastic member 2222 drives the second sliding member 2224 to move down, and the second sliding member 2224 drives the second sealing member 2225 to move down to open the fourth opening of the second valve cylinder 221; when the air outlet thimble When 121 leaves the second sliding bar 2223, the second elastic member 2221 drives the second sliding member 2224 to move up to the second sealing member 2225 to seal the four openings, and the fourth elastic member 2222 Drive the second slide bar 2223 to move up to the initial position.

In this embodiment, through the design of the third elastic member 2122, the downward movement of the first sliding bar 2123 and the first sliding member 2124 are asynchronous; through the design of the fourth elastic member 2222, the The downward movement of the second sliding rod 2223 and the second sliding member 2224 is asynchronous; when the first valve barrel 211 is inserted into the air inlet 11 of the medicine filling tank 1 When the air outlet 12 of the medicine tank 1 is used, the air inlet thimble 111 drives the first slide bar 2123 to move down, but the first slide bar 2123 will not drive the first slide member 2124 to move down, so that the first slide bar 2123 will not drive the first slide bar 2124 to move down. The seal 2125 is in the state of sealing the second opening of the first valve cylinder 211; and the air outlet thimble 121 drives the second sliding rod 2223 to move down, but the second sliding rod 2223 does not drive the second sliding The member 2224 moves down, so that the second sealing member 2225 is in the state of sealing the fourth opening of the second valve cylinder 221 . Only when the dosing tank 1 is further pressed down, the first sliding rod 2123 will drive the first sliding member 2124 and the first sealing member 2125 to move down to open the second opening, and the first 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 tank 1 can be hooked on the mounting base 23, and neither the air inlet 11 nor the air outlet 12 of the dosing tank 1 communicates with the air channel 231; only further Press down the dosing tank 1, the air inlet 11 and the gas outlet 12 of the dosing tank 1 communicate with the air passage 231, thereby improving the anesthetic agent added to the air passage 231 by the dosing tank 1 convenience.

In one embodiment, as shown in FIG. 5 , the first air channel 232 includes a first air hole and a second air hole, the inner diameter of the first air channel 232 is larger than the inner diameter of the second air hole, and the inner diameter of the second air hole The opposite ends communicate with the first air hole and the air channel 231 respectively; the first valve barrel 211 is inserted into the first air hole, and the first sealing member 2125 is used to block the second opening or the The second air hole; understandably, 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 first sealing The outer diameter of the 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 the outer wall of the first sealing member 2125 and the first A first transitional space is formed between the inner walls of an air hole, the outer wall of the first valve cylinder 211 is in sealing connection with the inner wall of the first air hole, and the second air hole communicates with the first air hole through the first transitional space. Bore 2111.

As shown in Figure 6, the second air channel 233 includes a third air hole and a fourth air hole, the inner diameter of the third air channel is larger than the inner diameter of the fourth air hole, and the opposite ends of the fourth air hole communicate with the The third air hole and the air channel 231 ; the second valve cylinder 221 is plugged into the third air hole, and the second sealing member 2225 is used to block the fourth opening or the fourth air hole. It can be understood that 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 surface of the second sealing member 2225 The diameter is greater 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, so that the outer wall of the second sealing member 2225 and the inner wall of the third air hole A second transition space is formed therebetween, the outer wall of the second valve cylinder 221 is in sealing connection with the inner wall of the third air hole, and the fourth air hole communicates with the second inner hole 2211 through the second transition space.

In this embodiment, the structure on the mounting seat 23 is simple and the manufacturing cost is low.

In one embodiment, as shown in Figure 7, a connecting arm (not shown in the figure) is provided on the inner wall of the outlet of the air channel 231, and a guide hole (not shown in the figure) is provided on the connecting arm. The gas path structure 2 also includes a one-way diaphragm 24 and a connecting rod (not shown) connecting the one-way diaphragm 24, the connecting rod is inserted into the guide hole, and the one-way membrane The sheet 24 is used to control the gas flow direction of the outlet of the gas channel 231 . It can be understood that the connecting arm straddles the outlet of the air passage 231 , and the one-way membrane 24 is located outside the air passage 231 . When the gas channel 231 outputs gas through its outlet, the gas will drive the one-way diaphragm 24 to slide away from the outlet of the gas channel 231, so that the outlet of the gas channel 231 is opened; When exhaling from the outlet of 231 to the gas channel 231, the gas will drive the one-way diaphragm 24 to move to block the outlet of the gas channel 231, thereby ensuring the unidirectional flow characteristics of the gas in the gas channel 231.

In one embodiment, as shown in FIG. 3 , FIG. 8 and FIG. 9 , the dosing device for an anesthesia machine further includes a locking assembly 3, and the locking assembly 3 includes a locking bar 31, a guide column 32, a fifth Elastic parts 33 and elastic chains 34; the mounting base 23 is provided with insertion holes 234, and the elastic chains 34 are installed in the insertion holes 234; the locking rod 31 is provided with guide hole groups 311 and screw The hole 312, the guide hole group 311 includes a vertical hole arranged axially along the lock rod 31 and a side hole radially arranged along the lock rod 31, the vertical hole communicates with the side hole; understandably, The guide hole group 311 is arranged on the side wall of the locking rod 31, and the screw hole 312 is arranged on the bottom of the locking rod 31; into the insertion hole 234 described above.

The dosing tank 1 is provided with a turning hole, and the lock bar 31 is installed in the turning hole through the fifth elastic member 33; one end of the guide post 32 is installed on the dosing tank 1, so that The other end of the guide column 32 is inserted into the guide hole group 311; understandably, the fifth elastic member 33 includes but not limited to a spring, etc., and the fifth elastic member 33 can assist the locking rod 31 in the position. reset in the rotating hole (that is, when the lock bar 31 is not under pressure and is in the unlocked state, the fifth elastic member 33 drives the lock bar 31 to move up to the reset state); The guide hole set 311 slides, so that the guide hole set 311 can control the moving direction of the lock bar 31 through the guide post 32 .

When the dosing tank 1 inputs anesthetic gas into the air channel 231 , the locking rod 31 is inserted into the insertion hole 234 , and the elastic chain 34 is screwed into the screw hole 312 . Specifically, firstly, the medicine adding tank 1 is hooked on the installation seat 23, the first valve cylinder 211 is inserted into the air inlet 11 of the medicine adding tank 1, and the second valve cylinder 221 is inserted into In the gas outlet 12 of the medicine-filling tank 1, at this moment, the described medicine-filling tank 1 does not input anesthetic agent into the air channel 231;

Medicine tank 1, the guide column 32 slides upward in the vertical hole, the elastic chain 34 is inserted into the screw hole 312, and the air intake thimble 111 drives the first valve core assembly 212 to conduct The first valve

the second opening of the cylinder 211, and the air outlet thimble 121 drives the second valve core assembly 222 to lead to the fourth opening of the second valve cylinder 221; finally, the locking lever 31 is rotated, and the guide post 32 rotates Into the side hole, the elastic chain 34 is also screwed into the screw hole 312, thereby completing the medicine filling tank

1 is installed on the installation seat 23, and the medicine filling tank 1 adds anesthetic agent O into the air channel 231. In this embodiment, the design of the locking assembly 3 improves the

The stability on the mounting base 23 ensures the smoothness and stability of adding the anesthetic agent into the air channel 231 from the medicine adding tank 1 .

In one embodiment, as shown in FIG. 1 , the dosing tank 1 includes a base 13 and

The tank body 14 on the seat 13, the air inlet 11 and the air outlet 12 are all arranged on the base 13, and the tank body 14 is provided with a storage space for storing anesthetics (not shown in the figure). out); understandably,

The tank body 14 and the base 13 are integral structural parts; the air inlet 11 and the air outlet 12 are both connected to the storage space.

As shown in Fig. 8 and Fig. 10, the dosing device for the anesthesia machine also includes a starting mechanism 4, and the starting mechanism 4

The moving mechanism 4 includes a rotating arm 41 and a sixth elastic member 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 portion 411. The rotating arm 41 the other end into the

The second trigger part 412 in the storage space; it can be understood that the rotating arm 41 is equivalent to a seesaw, the sixth elastic member 42 includes but not limited to a spring, etc., and the opposite ends of the rotating arm 41 are free end.

When the first triggering portion 411 abuts against the installation seat 23 (protrusion, etc.), the second triggering portion 412 triggers the tank body 14 to release the anesthetic. Specifically, when the elastic chain 34 is screwed into the

When the screw hole 312 of the locking rod 31 is closed, the mounting seat 23 will drive the rotating arm 41 to rotate through the first triggering part 411, and the second triggering part 412 of the rotating arm 41 will trigger the tank body 14, Thereby, the storage space of the tank body 14 releases the anesthetic agent; it should be noted that when the elastic chain 34 is not screwed into the screw hole 312 of the locking rod 31, although the air channel 231 communicates with the drug filling tank 1 The air inlet 11 and the gas outlet 12, but the anesthetic agent inside the dosing tank 1 will not be released, only the second trigger part 412 of the rotating arm 41 triggers the part to be triggered in the dosing tank 1 (electronic switch, etc.), the dosing tank 1 will add anesthetic agent to the gas passage 231. In this embodiment, the design of the starting mechanism 4 further ensures the stability of adding the anesthetic agent into the air passage 231 from the dosing tank 1 and prevents the filling of the dosing tank 1 into the air passage 231. Accidents of leakage of anesthesia were added.

In one embodiment, as shown in Fig. 1 and Fig. 2, the dosing device for the anesthesia machine includes two dosing tanks 1, and each dosing tank 1 includes a tank body 14 and a dosing tank 1. One base 13; the air passage structure 2 includes two first switching valves 21 and two second switching valves 22, and two first air passages are provided on the mounting seat 23 232 and the two second air passages 233, the two first air passages 232 and the two second air passages 233 are all connected to the air passage 231; the two bases 13 can be detachably installed on the mount 23. It can be understood that one first switching valve 21 is installed in each of the first air passages 232, and one second switching valve 22 is installed in each of the second air passages 233; The structures of the dosing tanks 1 are the same, and the two dosing tanks 1 can be hooked on the mounting base 23 at the same time. At that time, the two dosing tanks 1 cannot be used at the same time, that is, the air channel In 231, an anesthetic agent can only be added by one dosing tank 1 at a time. In this embodiment, the design of the two dosing tanks 1 improves the applicability of the dosing device for the anesthesia machine.

In one embodiment, as shown in FIG. 8 and FIG. 10 , the dosing device for the anesthesia machine further includes two interlock mechanisms 5 , each of which is installed on the base 13 with one interlock mechanism 5 ;

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), and the interlock mechanism 5 includes a first lock cylinder 51, a second lock Post 52, the seventh elastic member 53 sleeved on the first lock post 51 and the eighth elastic member 54 sleeved on the second lock post 52; the first lock post 51 is slidably installed on the In the first sliding through hole, the second locking cylinder 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 inclined surface A lock cylinder 51 and the second lock cylinder 52 abut against the first slope and the second slope respectively; understandably, the seventh elastic member 53 and the eighth elastic member 54 both include but

Not limited to springs, etc., the seventh elastic member 53 is used to drive the first lock cylinder 51 to reset, and the fifth and eighth elastic member 54 is used to drive the second lock cylinder 52 to reset; the first lock cylinder 51 and the second lock

Columns 52 are located on both sides of the rotating arm 41 .

When the first triggering portion 411 abuts against the mounting base 23 , the first inclined surface drives the first lock cylinder 51 to move toward the side away from the first inclined surface in the first sliding through hole. move, and the

The second slope drives the second locking cylinder 52 to move toward a side away from the second slope O in the second sliding through hole.

Specifically, when the first triggering portion 411 of the rotating arm 41 abuts against the mounting seat 23, the first triggering portion 411 will drive the rotating arm 41 to rotate, and the rotating arm 41 passes through the first An inclined surface drives the first lock cylinder 51 to move toward the side away from the first inclined surface (that is, the first lock

Post 51 protrudes from the first sliding hole), and the rotating arm 41 drives the second locking post 52 to move toward the side away from the second inclined surface through the second inclined surface (that is, the first Two lock cylinders 52 protrude from the

The first locking cylinder 51 or the second locking cylinder 52 protruding out will compress the stretching space of the first locking cylinder 51 or the second locking cylinder 52 of another dosing tank 1; That is to say, the space between two adjacent bases 13 on the mounting seat 23 can only accommodate one of the first locking cylinder 51 or the first locking cylinder 51 .

The second locking cylinder 52 stretches out, and cannot accommodate two of the first locking cylinder 51 or the second locking cylinder 52. From 0, the mounting seat 23 can only allow one dosing tank 1 to the described Air passage 231 adds anesthetic agent,

This avoids the user's misoperation of adding the anesthetic agent to the gas channel 231 for two medicine adding tanks 1 at a time, and improves the safety of the medicine adding device for the anesthesia machine.

Another embodiment of the present invention also provides an anesthesia machine, including the above-mentioned dosing device for an anesthesia machine.

The above is only the embodiment of the anesthesia machine dosing device of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should include Within the protection scope of the present invention.

Claims (10)

1. The dosing device for the anesthesia machine is characterized by comprising a dosing tank and an air path structure, wherein the dosing tank is provided with an air inlet and an air outlet, an air inlet thimble is arranged in the air inlet, and an air outlet thimble is arranged on the inner wall of the air outlet;

the gas circuit structure comprises a first switching valve, a second switching valve and a mounting seat, wherein a gas channel, a first gas channel and a second gas channel which are communicated with the gas channel are arranged on the mounting seat; the first switching valve comprises a first valve cylinder and a first valve core assembly, wherein a first inner hole, a first opening and a second opening which are communicated with the first inner hole are formed in the first valve cylinder; the first valve core component is slidably arranged in the first air passage 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, wherein a second inner hole, a third opening and a fourth opening which are communicated with the second inner hole are formed in the second valve cylinder; the second valve core assembly is slidably arranged in the second air passage and the second inner hole and is used for blocking or conducting the fourth opening;

when the dosing tank inputs anesthetic gas into the air passage, one end of the first valve barrel, which is far away from the first valve core component, passes through the first opening and is inserted into the air inlet, and the air inlet thimble drives the first valve core component to move so as to conduct the second opening; one end of the second valve barrel, which is far away from the second valve core assembly, passes through the third opening and is inserted into the air outlet, and the air outlet thimble drives the second valve core assembly to move so as to conduct the fourth opening.

2. The device of claim 1, wherein the first valve element assembly comprises a first elastic member, a first piston and a first sealing member mounted on the first piston, the first sealing member is used for sealing or opening the second opening, the first piston is slidably mounted in the first air passage and the first inner hole through the first elastic member, and the air inlet thimble is used for driving the first piston to move;

The second valve core assembly comprises a second elastic piece, a second piston and a second sealing piece arranged on the second piston, the second sealing piece is used for sealing or opening the fourth opening, the second piston is slidably arranged in the second air passage and the second inner hole through the second elastic piece, and the air inlet thimble is used for driving the second piston to move.

3. The device of claim 2, wherein the first piston comprises a third elastic member, a first slide rod, and a first slider provided with a first slide hole, the first seal being mounted on the first slider; the first sliding rod is inserted into the first sliding hole in a sliding way; the third elastic piece is sleeved on the first sliding rod, and the opposite ends of the third elastic piece are respectively abutted with the first abutting part of the first sliding rod and the first sliding piece; the first sliding piece is slidably installed in the first air passage and the first inner hole through the first elastic piece; the air inlet thimble is used for driving the first sliding rod to move;

the second piston comprises a fourth elastic piece, a second sliding rod and a second sliding piece provided with a second sliding hole, and the second sealing piece is arranged on the second sliding piece; the second sliding rod is inserted into the second sliding hole in a sliding way; the second elastic piece is sleeved on the second sliding rod, and the opposite ends of the second elastic piece are respectively abutted with the second abutting part of the second sliding rod and the second sliding piece; the second sliding piece is slidably installed in the second air passage and the second inner hole through the second elastic piece; the air outlet thimble is used for driving the second sliding rod to move.

4. The dosing device for an anesthesia machine according to claim 2 wherein the first air passage comprises a first air hole and a second air hole, the first air passage has an inner diameter larger 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 air passage; the first valve cylinder is inserted into the first air hole, and the first sealing piece is used for sealing the second opening or the second air hole;

the second air passage comprises a third air hole and a fourth air hole, the inner diameter of the third air passage is larger than that of the fourth air hole, and the opposite ends of the fourth air hole are respectively communicated with the third air hole and the air passage; the second valve cylinder is inserted into the third air hole, and the second sealing piece is used for sealing the fourth opening or the fourth air hole.

5. The drug adding device for an anesthesia machine according to claim 1, wherein a connecting arm is arranged on the inner wall of the outlet of the air channel, and a guide hole is arranged on the connecting arm; the air 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 for controlling the air flow direction of the outlet of the air passage.

6. The anesthesia machine dosing device of claim 1 further comprising a locking assembly comprising a lock rod, a guide post, a fifth elastic member, and an elastic chain; the mounting seat is provided with a plug hole, and the elastic lock chain is mounted in the plug hole; the guide hole group comprises a vertical hole axially arranged along the lock rod and a side hole radially arranged along the lock rod, and the vertical hole is communicated with the side hole;

the dosing tank is provided with a rotating hole, and the lock rod is arranged in the rotating hole through the fifth elastic piece; one end of the guide post is arranged on the dosing tank, and the other end of the guide post is inserted into the guide hole group;

when the dosing tank inputs anesthetic gas into the gas channel, the lock rod is inserted into the insertion hole, and the elastic lock chain is screwed into the spiral hole.

7. The dosing device for an anesthesia machine according to claim 1, wherein the dosing tank comprises a base and a tank body mounted on the base, the air inlet and the air outlet are both arranged on the base, and a storage space for storing anesthetic is arranged on the tank body;

The drug adding device for the anesthesia machine further comprises a starting mechanism, wherein the starting mechanism comprises a rotating arm and a sixth elastic piece, the rotating arm is rotatably installed on the base, one end of the rotating arm is provided with a first triggering part, and the other end of the rotating arm extends into a second triggering part in the storage space;

when the first triggering part is abutted with the mounting seat, the second triggering part triggers the tank body to release anesthetic.

8. The anesthesia machine dosing device of claim 7 wherein the anesthesia machine dosing device comprises two dosing tanks, each comprising one tank body and one base; the gas path structure comprises two first switching valves and two second switching valves,

the mounting seat is provided with two first air passages and two second air passages, and the two first air passages and the two second air passages are communicated with the air passage; the two bases are detachably arranged on the 5 mounting seats.

9. The anesthesia machine dosing device of claim 8 further comprising two interlocking mechanisms, one on each base;

The base is provided with a first sliding through hole and a second sliding through hole, and the interlocking mechanism comprises a first 0 lock column, a second lock column, a seventh elastic piece sleeved on the first lock column and an eighth elastic piece sleeved on the second lock column; the first lock cylinder is slidably mounted in the first sliding through hole, and the second lock cylinder is slidably mounted in the second sliding through hole; the two opposite sides of the rotating arm are respectively provided with a first inclined plane and a second inclined plane, and the first lock column and the second lock column are respectively abutted with the first inclined plane and the second inclined plane;

and 5, when the first triggering part is abutted to the mounting seat, the first inclined surface drives the first lock column to move in the first sliding through hole towards one side far away from the first inclined surface, and the second inclined surface drives the second lock column to move in the second sliding through hole towards one side far away from the second inclined surface.

10. An anaesthetic machine comprising a device for feeding drugs to a anaesthesia 0 intoxication machine according to any one of claims 1 to 9.

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