Anesthesia quantitative spraying equipment for anesthesiology department

Abstract

The invention relates to the technical field of anesthesia quantitative spraying, in particular to anesthesia quantitative spraying equipment for the anesthesiology department, and aims at solving the problems that existing anesthesia quantitative spraying equipment for the anesthesiology department is tedious in operation and free of self-cleaning. The spray pipe penetrates through the medicament barrel, and the medicament barrel internally comprises a medicament storage cavity and a medicament feeding cavity; the device further comprises a valve mechanism, a quantitative dosing mechanism, a continuous pressurizing mechanism and a cleaning mechanism. The valve mechanism is arranged in the middle of the top of the medicament cylinder; the quantitative dosing mechanism penetrates through the top of the medicament cylinder; the continuous pressurizing mechanism is arranged on the quantitative dosing mechanism; the cleaning mechanism is arranged at the front end of the spraying pipe and matched with the continuous pressurizing mechanism. According to the anesthesia quantitative spraying equipment for the anesthesiology department, continuous pressure can be provided through the continuous pressurizing mechanism, and residual air pressure in the medicine feeding cavity can be released in the transmission assembly to drive the brush head to rotate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anesthetic quantitative spraying, in particular to an anesthetic quantitative spraying device for anesthesiology. BACKGROUND

[0002] In the operation of clinical anesthesiology, the spraying administration of local anesthetic drugs is a common and important administration method, which is widely used in oral cavity, throat, nasal cavity, tracheal intubation surface anesthesia and anesthesia treatment of small surgical wounds. This method has the advantages of fast effect, simple operation, little pain for patients, etc., and is especially suitable for various medical scenes such as outpatient service, emergency and operating room.

[0003] The anesthetic spraying device currently used in clinical anesthesiology is mainly used for precise spraying of local anesthetic drugs, and the core requirements are concentrated in the four dimensions of "quantitative administration", "directional spraying", "operation convenience" and "use safety". Most of the existing devices use mechanical structures or simple electric control structures to realize basic functions, but there are obvious shortcomings in the integration degree of functions, operation stability and cleaning convenience, and an integrated mechanical solution covering "quantitative precise control + angle flexible adjustment + auxiliary pressurized drug spraying + automatic nozzle cleaning" has not been formed.

[0004] The existing patent with publication number CN119113355A discloses an anesthetic quantitative spraying device for anesthesiology, wherein the anesthetic quantitative spraying device for anesthesiology comprises a spraying pipe, a medicine cylinder, a push cylinder, a second piston plate, a quantitative cylinder, a large-size quantifier, a medium-size quantifier, a small-size quantifier, and a piston column. The medicine cylinder is used to store medicine. After the accurate amount of medicine is input into the quantifier, the push cylinder is driven by the quantitative cylinder to accurately push the medicine out of the medicine cylinder, thereby achieving the effect of anesthetic quantitative spraying. The operation is simple, and the anesthesia degree is high.

[0005] However, the anesthetic quantitative spraying device for anesthesiology has the following problems in use: (1) The device has a large number of valve systems, and medical staff need to open and close multiple valves in a specific order to complete the "medicine suction-quantitative-spraying" process, which is complicated and prone to misoperation; (2) There is no automatic cleaning function for the end of the spraying pipe, and drug residues can easily block the pipe opening. SUMMARY

[0006] In view of the problems in the prior art, the present application provides an anesthetic quantitative spraying device for an anesthesiology department, which can provide continuous and uniform pressure through a continuous pressurizing mechanism, prevents mist droplet size from being uneven or spraying from being discontinuous due to large pressure fluctuation, and automatically removes residual drug solution or biological secretions at the front end of the spraying pipe through driving the brush head to rotate by releasing the residual air pressure in the drug delivery cavity through the transmission assembly.

[0007] To achieve the above object, the technical solution adopted by the present application is as follows: The present application provides an anesthetic quantitative spraying device for an anesthesiology department, which comprises a drug cartridge and a spraying pipe penetrating through the drug cartridge, the inside of the drug cartridge comprising a drug storage cavity and a drug delivery cavity; further comprising a valve mechanism, a quantitative drug delivery mechanism and a continuous pressurizing mechanism; the valve mechanism is arranged at the middle part of the top end of the drug cartridge and is used to open and close the spraying pipe; the quantitative drug delivery mechanism penetrates through the top of the drug cartridge; the continuous pressurizing mechanism is arranged on the quantitative drug delivery mechanism and is used to continuously and uniformly deliver pressure.

[0008] Further, the valve mechanism comprises a pressing plate, two limiting rods and two limiting assemblies; the pressing plate is slidingly sleeved at the top end of the drug cartridge; the two limiting rods are arranged at the two sides of the spraying pipe and are used to clamp the spraying pipe; the two limiting assemblies are arranged at the bottom end of the pressing plate and are in sliding fit with the two ends of the limiting rods, and are used to control the limiting rods to loosen or tighten the spraying pipe.

[0009] Further, the limiting assembly comprises a limiting block, an elastic member, a limiting plate and a clamping rod; the limiting block is connected at the bottom end of the pressing plate, and a clamping groove is formed in the inner side wall thereof; the elastic member is arranged between the limiting block and the drug cartridge; the limiting plate is connected at the inner side of the limiting block, and an arc-shaped limiting groove matched with the limiting rod is formed in the limiting plate; the clamping rod is hingedly connected with the drug cartridge at one end and is provided with a clamping block matched with the clamping groove at the other end.

[0010] Further, the quantitative drug delivery mechanism comprises a fixed sleeve, a sliding sleeve and a piston rod; the fixed sleeve penetrates through the drug storage cavity, and a drug inlet is formed in the side wall near the bottom of the drug storage cavity; the sliding sleeve movably penetrates through the fixed sleeve, and a drug delivery port corresponding to the drug inlet is formed in the side wall thereof; the piston rod is slidingly and sealingly sleeved in the inside of the sliding sleeve.

[0011] Further, an arc-shaped sliding groove is formed in the inner side wall of the fixed sleeve; a sliding block matched with the sliding groove is arranged on the side wall of the sliding sleeve, and the sliding block is embedded in the sliding groove.

[0012] Further, the continuous pressurizing mechanism comprises a gas bag one, a plurality of inflation channels, an air passage and an inflation feedback assembly; the gas bag one is arranged at the bottom end of the sliding sleeve and is used for pressurizing the drug delivery cavity; one end of the plurality of inflation channels is communicated with the gas bag one and the other end penetrates through the top end of the sliding sleeve; the air passage is annular and is communicated with the inflation channels and is used for inflating the gas bag one; the inflation feedback assembly is arranged at the top end of the air passage and is used for simultaneously opening and closing the plurality of inflation channels.

[0013] Further, the inflation feedback assembly comprises a plurality of display pieces, an inflation pipe and a plurality of locking pieces; the plurality of display pieces are arranged at the top end of the air passage and correspond to the plurality of inflation channels one by one and are used for simultaneously observing the inflation state when the inflation channels are opened and closed; the inflation pipe is communicated with the air passage at the bottom end and is communicated with the display pieces at both ends and is used for inflating the inside of the air passage and the display pieces; the plurality of locking pieces are arranged at the position where the inflation pipe is communicated with the air passage correspondingly and are used for preventing the display pieces from being inflated excessively.

[0014] Further, the display piece comprises an observation sleeve, a gas bag two, a movable plate and a sealing plate; the observation sleeve is arranged at the top end of the air passage; the gas bag two is arranged inside the observation sleeve; the movable plate is sleeved at the bottom of the gas bag two; the sealing plate is matched with the inflation channel and the top end is connected with the movable plate through a connecting rope and is used for opening the inflation channel when the gas bag two is inflated and the movable plate is moved upward.

[0015] Further, the cleaning mechanism is arranged at the front end of the spray pipe and is matched with the continuous pressurizing mechanism and is used for automatically cleaning the front end of the spray pipe.

[0016] Further, the cleaning mechanism comprises a brush head and a transmission assembly; the brush head is movably arranged at the front end of the spray pipe; the transmission assembly is connected with the brush head and is matched with the spray pipe and is used for rotating the brush head when the gas pressure is released.

[0017] Compared with the prior art, the beneficial effects of the present application are: 1、Through the dosing port on the sliding sleeve and the medicine inlet port on the fixed sleeve, a certain amount of liquid medicine is extracted into the sliding sleeve, and then the sliding sleeve is moved downward to the dosing cavity by rotating the sliding sleeve, and the liquid medicine is squeezed into the dosing cavity by pressing the piston rod, so that rapid and quantitative dosing is realized, and the operation difficulty and control difficulty are reduced. The gas bag one is used as a pressurizing source, the gas pump delivers gas to the inflation pipe, and then the gas is delivered into the inflation channel through the air passage, so that continuous and uniform pressure can be provided, the size of the mist droplets or the spraying discontinuity caused by large pressure fluctuation can be prevented, the liquid medicine can be ensured to enter the spray pipe at a stable flow rate, and the atomization effect is improved. Whether the gas bag one is continuously inflated can be directly judged by observing the inflation degree of the gas bag two. The locking piece is arranged at the connection position of the inflation pipe and the air passage, so that when the gas bag two reaches the preset inflation limit, the locking piece can be automatically positioned, the system overpressure caused by misoperation can be prevented, and the safety redundancy of the equipment use is improved. After the spraying is completed, the residual gas pressure in the dosing cavity is released through the transmission assembly, the brush head is driven to rotate, and the residual liquid medicine or biological secretions at the front end of the spray pipe are automatically removed, without the need of additional energy. The mechanical scraping of the brush head can effectively remove the residual substances, and the long-term stable operation of the equipment is ensured. Medical staff only need to press the pressing plate, and then the spraying pipe can be clamped or released by the limiting rod through the limiting assembly, the start and stop of spraying can be realized, the operation is in line with ergonomics, and one-handed control during surgery or examination is facilitated.

[0018] 2、Medical staff can accurately set the single spraying dose by controlling the distance of the sliding piston rod, so that over-dosage or insufficient dosage caused by uneven manual force can be avoided, and the anesthesia for children, the elderly or sensitive parts is especially suitable. The connecting sleeve at the front end of the spray pipe comprises a universal pipe, the angle of the spray head can be freely adjusted, the spray head can be easily aligned with different positions such as the oral cavity, the nasal cavity and the surgical wound, the head of the patient does not need to be moved, and the operation convenience is improved.

[0019] 3、The function modules such as quantitative dosing, pressurizing, cleaning and valve are highly integrated on the medicament cartridge, the overall structure is compact, the equipment is convenient to hold and carry, and the equipment is suitable for multiple scenes such as operating rooms, emergency departments and outpatient departments.

[0020] 4、The dynamic cleaning function avoids the cumbersome steps of manually cleaning the spray head after each use, and saves the time of medical staff. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2An internal structure diagram of the present application; Figure 3 An internal structure diagram of the present application Figure 2 An enlarged view of A in the present application; Figure 4 An internal structure diagram of the present application Figure 5 An internal structure diagram of the present application Figure 6 An internal structure diagram of the present application Figure 7 An internal structure diagram of the present application Figure 6 An enlarged view of B in the present application; Figure 8 An internal structure diagram of the present application Figure 9 An internal structure diagram of the present application Figure 10 An internal structure diagram of the present application Figure 11 An internal structure diagram of the present application Figure 12 An internal structure diagram of the present application Figure 13 An internal structure diagram of the present application Figure 14 An internal structure diagram of the present application Figure 15 An internal structure diagram of the present application Figure 8 An enlarged view of D in the present application; Figure 16 An internal structure diagram of the present application Figure 17 An internal structure diagram of the present application

[0023] In the figure: 1 - medicine cylinder; 11 - storage chamber; 12 - dosing chamber; 13 - mounting seat; 14 - connecting sleeve; 141 - rear part; 142 - universal pipe; 143 - front part; 2 - spray pipe; 21 - atomizing nozzle; 3 - valve mechanism; 31 - pressing plate; 32 - limiting rod; 33 - limiting assembly; 331 - limiting block; 3311 - clamping groove; 332 - elastic member; 333 - limiting plate; 3331 - limiting groove; 334 - clamping rod; 3341 - clamping block; 4 - dosing mechanism; 34 - fixed plate; 35 - spring three; 41 - fixed sleeve; 411 - medicine inlet; 412 - sliding groove; 42 - sliding sleeve; 421 - dosing port; 422 - sliding block; 423 - clamping strip; 43 - piston rod; 431 - guide groove; 432 - scale; 44 - air pump; 5 - continuous pressurizing mechanism; 51 - air bag one; 52 - inflation channel; 53 - air passage; 54 - inflation feedback assembly; 541 - display member; 5411 - observation sleeve; 5412 - air bag two; 5413 - movable plate; 5414 - sealing plate; 5415 - connecting rope; 542 - inflation pipe; 543 - locking member; 5431 - locking block; 5432 - locking rod; 5433 - spring two; 5434 - adapter shell; 5435 - elastic rope; 544 - connecting pipe; 5441 - clearance groove; 6 - cleaning mechanism; 61 - brush head; 62 - transmission assembly; 621 - connecting plate; 622 - rotating rod; 623 - gear; 624 - spring one; 625 - sliding block; 626 - mounting shell; 627 - stop block; 628 - rack. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments but not all embodiments.

[0025] In the description of the present application, it should be understood that the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings shown in the accompanying drawings, and are only intended to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be understood that the terms "set", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Embodiment One

[0027] In combination Figures 1-17 As shown, the present application provides an anesthetic quantitative spraying device for anesthesiology department, comprising an anesthetic quantitative spraying device for anesthesiology department, comprising a medicine cylinder 1, and a spraying pipe 2 penetrating through the medicine cylinder 1, the inside of the medicine cylinder 1 comprising a medicine storage cavity 11 and a medicine delivery cavity 12; further comprising a valve mechanism 3, a quantitative delivery mechanism 4 and a continuous pressure mechanism 5; the valve mechanism 3 is arranged in the middle of the top end of the medicine cylinder 1, used for opening and closing the spraying pipe 2; the quantitative delivery mechanism 4 penetrates through the top of the medicine cylinder 1; the continuous pressure mechanism 5 is arranged on the quantitative delivery mechanism 4, used for continuously and uniformly delivering pressure.

[0028] The top of the medicine cylinder 1 is provided with a mounting seat 13 for mounting the valve mechanism 3; the front end of the mounting seat 13 is provided with a connecting sleeve 14 for supporting the front end of the spraying pipe 2; the connecting sleeve 14 comprises a rear part 141, a universal pipe 142 and a front part 143 connected in sequence.

[0029] Specifically, the medicine cylinder 1 is a hollow cylindrical structure, the inside of which is divided into two parts, the upper part is a medicine storage cavity 11 for storing anesthetic liquid, and the lower part is a medicine delivery cavity 12 for delivering the liquid to the spraying pipe 2 under pressure, the two cavities are communicated through the quantitative delivery mechanism 4, the bottom is sealed, and the function of spraying the liquid from the medicine storage cavity 11 to the delivery cavity and then from the spraying pipe 2 is realized through the change of internal pressure, the medicine cylinder 1 is made of medical grade transparent polycarbonate with high transparency, corrosion resistance and good biocompatibility. The spraying pipe 2 penetrates through the connecting sleeve 14, the mounting seat 13 and the medicine cylinder 1 in sequence, the front end is provided with an atomizing nozzle 21, and the rear end is located at the bottom of the medicine delivery cavity 12, the universal pipe 142 part of the connecting sleeve 14 is a multi-section pipe that can adjust the spraying direction, which can be adjusted manually during use, the spraying pipe 2 is made of corrosion-resistant hose, when the universal pipe 142 is bent, the corresponding part of the spraying pipe 2 deforms accordingly without affecting the spraying of the liquid. The mounting seat 13 is fixedly connected at the center of the top end of the medicine cylinder 1 and is made of medical grade transparent polycarbonate. The valve mechanism 3 is sleeved on the mounting seat 13, the mounting seat 13 is used to support the valve mechanism 3 to realize mechanical opening and closing control of the spraying pipe 2, which can prevent accidental spraying and liquid leakage. The quantitative delivery mechanism 4 is provided with a scale 432, which can realize the function of accurately controlling the single dose of medicine, and can avoid excessive or insufficient medicine. The continuous pressure mechanism 5 can continuously and slowly pressurize, and the pressure of the spraying pipe 2 is stable and unchanged, which can ensure uniform atomization of the spraying, stable range and avoid loss of control when the hand controls the pressure, leading to uneven spraying.

[0030] Further, the valve mechanism 3 comprises a pressing plate 31, two limiting rods 32 and two limiting assemblies 33; the pressing plate 31 is sleeved on the top end of the medicine cylinder 1; the two limiting rods 32 are arranged on the two sides of the spray pipe 2 and used for clamping the spray pipe 2; the two limiting assemblies 33 are arranged at the bottom end of the pressing plate 31 and are in sliding fit with the two ends of the limiting rods 32, and are used for controlling the spray pipe 2 to be clamped or released by the limiting rods 32.

[0031] Further, the limiting assembly 33 comprises a limiting block 331, an elastic member 332, a limiting plate 333 and a clamping rod 334; the limiting block 331 is connected to the bottom end of the pressing plate 31, and a clamping groove 3311 is formed in the inner side wall of the limiting block 331; the elastic member 332 is arranged between the limiting block 331 and the medicine cylinder 1; the limiting plate 333 is connected to the inner side of the limiting block 331, and an arc-shaped limiting groove 3331 matched with the limiting rod 32 is formed in the limiting plate 333; the clamping rod 334 is hingedly connected to the medicine cylinder 1 at one end and is provided with a clamping block 3341 matched with the clamping groove 3311 at the other end.

[0032] The pressing plate 31 is arranged outside the mounting base 13, two fixed rods are symmetrically arranged, the two fixed rods slide through the top end of the mounting base 13, and the pressing plate 31 can be displaced up and down along the mounting base 13 by manual pressing. Two limiting blocks 331 are fixedly connected with the bottom of the corresponding fixed rod, and can be displaced up and down with the fixed rod. The bottom end of the limiting block 331 is connected with the flat plate in the mounting base 13 through an elastic element 332, the elastic element 332 supports the limiting block 331 so that the limiting block 331 can be automatically reset, and the elastic element 332 is a spring structure. The shape of the clamping groove 3311 is similar to a peach heart shape, and the bottom end and the top end of the groove are pointed. The limiting plate 333 is arranged in parallel with the limiting block 331, and each limiting plate 333 and the corresponding limiting block 331 are fixedly connected through a connecting rod and can be displaced up and down with the limiting block 331. The inner side of the limiting plate 333 is further provided with a fixed plate 34, and two spring threes 35 are arranged in the middle of each fixed plate 34. The two ends of the limiting rod 32 slide through the fixed plate 34 and then slide through the limiting plate 333, and the function is that the fixed plate 34 can make the limiting rod 32 only do linear motion, and the spring three 35 can help the limiting rod 32 reset. The clamping rod 334 is perpendicular to the flat plate in the mounting base 13 and is hingedly connected with the bottom end of the flat plate in the mounting base 13, the clamping rod 334 is located between the limiting block 331 and the limiting plate 333, and the top end is provided with a clamping block 3341 on one side close to the limiting block 331. The clamping block 3341 and the clamping groove 3311 are matched, so that when the limiting block 331 moves downward, the clamping block 3341 of the clamping rod 334 is clamped into the sharp top end of the clamping groove 3311, and vice versa. The clamping block 3341 is clamped into the sharp bottom end, realizing the function of locking the position of the limiting block 331 and the limiting plate 333. The limiting rod 32 is arranged perpendicularly to the limiting plate 333, and the two ends of each limiting rod 32 are slidably connected with the limiting grooves 3331 of the two limiting plates 333. When the limiting plate 333 is displaced up and down, the curvature of the limiting groove 3331 forces the limiting rods 32 to approach or move away from each other, so as to clamp or release the spray pipe 2.

[0033] Further, the dosing mechanism 4 comprises a fixed sleeve 41, a sliding sleeve 42 and a piston rod 43; the fixed sleeve 41 penetrates the medicine storage cavity 11, and the side wall is provided with a medicine inlet 411 near the bottom of the medicine storage cavity 11; the sliding sleeve 42 movably penetrates the fixed sleeve 41, and the side wall is provided with a dosing opening 421 corresponding to the medicine inlet 411; and the piston rod 43 is slidably and sealingly arranged in the sliding sleeve 42.

[0034] The fixed sleeve 41 is vertically arranged at the top end of the medicament cartridge 1, is a cylindrical hollow structure, is fixedly sleeved on the medicament cartridge 1, communicates the medicine storage cavity 11 and the medicine administration cavity 12 of the medicament cartridge 1 with the outside, is used for supporting other structures, and supports corresponding mechanical operations, and is made of stainless steel. The gap between the outer side wall of the sliding sleeve 42 and the inner side wall of the fixed sleeve 41 is almost invisible and has a certain friction with each other, so that the sliding sleeve 42 cannot be accidentally rotated, and the bottom is a sealed structure, and the whole is made of stainless steel. The piston rod 43 is made of a stainless steel rod plus a silica gel sealing ring, and a clamping strip 423 is arranged at the top of the inner side wall of the sliding sleeve 42. The top end of the clamping strip 423 is flush with the top end of the sliding sleeve 42. A guide groove 431 is arranged on the outer side wall of the stainless steel rod part of the piston rod 43 in the length direction. The clamping strip 423 is clamped in the guide groove 431 and is in sliding connection with the guide groove 431. The action is to slide the sliding sleeve 42 and the piston rod 43 while limiting the movement track of the piston rod 43, so that the piston rod 43 can only move linearly up and down. The stainless steel rod part of the piston rod 43 is also provided with a scale 432 in the length direction. The scale 432 is aligned with the top end of the clamping strip 423 in the initial state. When the piston rod 43 moves upward, the dose of anesthetic liquid sucked into the sliding sleeve 42 can be accurately controlled by observing the change of the scale 432.

[0035] Further, an arc-shaped sliding groove 412 is formed in the inner side wall of the fixed sleeve 41; and a sliding block 422 matched with the sliding groove 412 is arranged on the side wall of the sliding sleeve 42 and is embedded in the sliding groove 412.

[0036] The sliding sleeve 42 is movably connected with the fixed sleeve 41 through the sliding block 422. The sliding groove 412 is helical along the length direction of the fixed sleeve 41. The sliding block 422 is a protrusion on the outer side wall of the sliding sleeve 42 and is in sliding connection with the sliding groove 412. The sliding block 422 can support the sliding sleeve 42 in the fixed sleeve 41 to prevent the sliding sleeve 42 from accidentally separating. When the sliding sleeve 42 rotates, the sliding groove 412 can limit the movement track of the sliding block 422, so that the sliding sleeve 42 rotates while moving up and down. When the sliding sleeve 42 moves downward until the medicine administration port 421 is located in the medicine administration cavity 12, the anesthetic liquid with a certain dose can be squeezed into the medicine administration cavity 12 by pressing the piston rod 43 downward.

[0037] Further, the continuous pressurizing mechanism 5 comprises a gas bag 51, a plurality of inflation channels 52, an air passage 53 and an inflation feedback assembly 54. The gas bag 51 is arranged at the bottom end of the sliding sleeve 42 and is used for pressurizing the medicine administration cavity 12. One end of the plurality of inflation channels 52 is in communication with the gas bag 51, and the other end penetrates the top end of the sliding sleeve 42. The air passage 53 is an annular structure, is in communication with the inflation channels 52, and is used for inflating the gas bag 51. The inflation feedback assembly 54 is arranged at the top end of the air passage 53 and is used for simultaneously opening and closing the plurality of inflation channels 52.

[0038] A small air pump 44 is arranged at the top end of the sliding sleeve 42, which can be of the type of R510-29 air pump 44. The air bag 51 is located at the bottom end of the sliding sleeve 42 and is made of medical silicone with good elasticity and fatigue resistance. The inflation channels 52 are two in number, arc-shaped in cross-section and matched with the cross-sectional shape of the sliding sleeve 42, symmetrically sleeved inside the side wall of the sliding sleeve 42 and fixed, serving as a channel for connecting the air pump 44 at the top end of the sliding sleeve 42 with the air bag 51 at the bottom end of the sliding sleeve 42. The inflation channels 52 are made of nylon material. The top end of the inflation channel 52 extends out of the sliding sleeve 42 and is connected with the air passage 53, which is sleeved outside the piston rod 43 without contacting the piston rod 43. In addition, there is a gap between the air passage 53 and the sliding sleeve 42, which can be used to observe the scale 432.

[0039] Further, the inflation feedback assembly 54 includes a plurality of display pieces 541, an inflation tube 542 and a plurality of locking pieces 543. The plurality of display pieces 541 are arranged at the top end of the air passage 53 and correspond one-to-one with the plurality of inflation channels 52, for opening and closing the inflation channels 52 while observing the inflation state. The inflation tube 542 is connected at the bottom end with the air passage 53 and at both ends with the display pieces 541, for inflating the inside of the air passage 53 and the display pieces 541. The plurality of locking pieces 543 are arranged correspondingly at the connection between the inflation tube 542 and the air passage 53, for preventing the display pieces 541 from being over-inflated.

[0040] The air pump 44 is installed at the top end of the air passage 53 and arranged at the middle of the inflation tube 542, which is centered on the air pump 44 and symmetrically arranged on both sides. The inflation tube 542 is symmetrically arranged on both sides with connecting tubes 544, both of which are connected with the air passage 53. The number of display pieces 541 is two, which are symmetrically connected at both ends of the inflation tube 542. When the air pump 44 is started, air first enters the display pieces 541 through the inflation tube 542. When the display pieces 541 reach the appropriate amount of air, they will react and open the inflation channels 52 at the same time. The locking pieces 543 can block the connecting tubes 544 before the air enters the air passage 53, and block the connection between the inflation tube 542 and the display pieces 541 at the same time as the air enters the air passage 53, preventing air from continuing to enter the display pieces 541. Before spraying, the display pieces 541 and the locking pieces 543 will seal the inflation channels 52 and the air passage 53 respectively, and the condition that both the inflation channels 52 and the air passage 53 are opened needs to be met before air can enter the air bag 51 for spraying. This design can prevent the atomizing nozzle 21 from leaking liquid and also gives medical staff sufficient time to determine the anesthesia position before spraying.

[0041] Further, the display piece 541 comprises an observation sleeve 5411, an air bag 5412, a movable plate 5413 and a sealing plate 5414; the observation sleeve 5411 is arranged at the top end of the air passage 53; the air bag 5412 is arranged inside the observation sleeve 5411; the movable plate 5413 is sleeved at the bottom of the air bag 5412; the sealing plate 5414 is matched with the inflation passage 52, and the top end is connected with the movable plate 5413 through a connecting rope 5415, for opening the inflation passage 52 when the air bag 5412 is inflated and the movable plate 5413 is moved upward.

[0042] The observation sleeve 5411 is connected with the air passage 53 and is made of transparent material. The inside of the air bag 5412 is communicated with the end of the inflation pipe 542, and the air bag 5412 is designed to be inflated only downward, so that when the air bag 5412 is inflated downward, the movable plate 5413 is driven upward by other parts of the air bag 5412. The bottom of the sealing plate 5414 is clamped on the opening at the top end of the inflation passage 52, which seals the inflation passage 52. When the movable plate 5413 is displaced upward, the sealing plate 5414 is lifted upward through the connecting rope 5415, so that the inflation passage 52 is communicated with the air passage 53.

[0043] Specifically, the locking member 543 comprises a locking block 5431, a locking rod 5432, a spring 5433, and an adapter shell 5434. The locking block 5431 is slidably and sealingly sleeved in the connecting pipe 544. The top end of the locking block 5431 is connected to the inner sidewall of the inflating pipe 542 by two elastic ropes 5435. One of the elastic ropes 5435 is connected to the locking block 5431 and the inner sidewall of the inflating pipe 542, and the other elastic rope 5435 is connected to the inner sidewall of the inflating pipe 542 at one end and to the locking rod 5432 at the other end. The end structure of the locking rod 5432 is matched with the arc-shaped protrusion at the bottom end of the locking block 5431. The rear end of the locking rod 5432 penetrates the sidewall of the connecting pipe 544 and is slidably connected to the adapter shell 5434. The inside of the adapter shell 5434 is a cavity structure with narrow sides and a wide middle part. The front end of the locking rod 5432 is slidably and sealingly connected to the narrow cavity of the adapter shell 5434, and the rear end of the locking rod 5432 penetrates the adapter shell 5434. The spring 5433 is connected between the adapter shell 5434 and the locking rod 5432. When air enters the connecting pipe 544 from the inflating pipe 542, the air pressure pushes the locking block 5431 downward, the locking block 5431 moves downward to make the locking rod 5432 move backward, and when the front end of the locking rod 5432 enters the wide cavity inside the adapter shell 5434, the locking block 5431 is just moved to the appropriate position to connect the connecting pipe 544 with the internal cavity of the adapter shell 5434, so that air enters the inside of the adapter shell 5434 and then enters the bottom of the connecting pipe 544 through the bottom of the locking rod 5432, and then air enters the air passage 53. In addition, when deflating, the air pump 44 is started to suck air, the suction force sucks the locking block 5431 upward and makes the locking block 5431 enter the inflating pipe 542 and open the connecting pipe 544. At this time, the locking rod 5432 slides forward under the pulling of the elastic rope 5435, and when the locking rod 5432 slides forward and inserts into the accommodation slot 5441 on the connecting pipe 544, there will be a gap between the connecting pipe 544 and the locking rod 5432. Continue to suck air to make the gas in the air bag 51 be sucked away, and the sucked away gas enters the connecting pipe 544 and then enters the inflating pipe 542 from the gap. When the air pump 44 is turned off, the locking block 5431 and the locking rod 5432 are reset to close the connecting pipe 544 again when the spring 5433 and the elastic rope 5435 recover.

[0044] The specific principle of the embodiment is: in use, the press plate 31 is pulled upward to release the two limiting rods 32 from the spray pipe 2, the piston rod 43 is pulled upward, the change of the scale 432 is observed, and when the piston rod 43 is moved to the preset scale 432, the process is stopped, at which time the anesthetic liquid is sucked into the inside of the sliding sleeve 42 from the medicine storage cavity 11; the sliding sleeve 42 is rotated to make the sliding block 422 slide around the sliding groove 412 to make the sliding sleeve 42 displace downward, when the dosing port 421 is located in the dosing cavity 12, the piston rod 43 is pressed downward to extrude the liquid into the dosing cavity 12, the air pump 44 is opened, air enters the air bag two 5412 from the inflation pipe 542 to make the air bag two 5412 inflate downward, the movable plate 5413 displaces upward to lift the sealing plate 5414 through the connecting rope 5415 to open the inflation channel 52, after the air bag two 5412 is saturated, air enters the connecting pipe 544 through the inflation pipe 542, the air pressure makes the locking block 5431 displace downward, the locking rod 5432 is pressed backward to make the inside of the adapter shell 5434 communicate with the connecting pipe 544, air enters the air passage 53 through the connecting pipe 544, and then enters the inflation channel 52 to make the air bag one 51 inflate, the air bag one 51 extrudes the gas in the dosing cavity 12, and then extrudes the liquid into the spray pipe 2, and then sprays the liquid to the specified position through the atomizing nozzle 21. Embodiment two

[0045] On the basis of embodiment one, embodiment two provides a cleaning mechanism 6 and a specific structure of the cleaning mechanism 6, and improves the practicability of the device.

[0046] The cleaning mechanism 6 is arranged at the front end of the spray pipe 2 and cooperates with the continuous pressurizing mechanism 5 to automatically clean the front end of the spray pipe 2. The cleaning mechanism 6 is installed at the front part 143 of the connecting sleeve 14, and when the continuous pressurizing mechanism 5 is used to continue pressurizing to make the cleaning mechanism 6 automatically clean the nozzle when the medicine spraying is stopped, the clogging is prevented, cross infection is avoided, and the safety of repeated use of the equipment is improved.

[0047] Specifically, the cleaning mechanism 6 comprises a brush head 61 and a transmission assembly 62; the brush head 61 is movably arranged at the front end of the spray pipe 2; the transmission assembly 62 is connected with the brush head 61 and cooperates with the spray pipe 2 to make the brush head 61 rotate when the air pressure is released. The transmission assembly 62 is installed at the front part 143.

[0048] It should be noted that the transmission assembly 62 comprises a connecting plate 621, a rotating rod 622, a gear 623, a rack 628, a spring 624, a sliding block 625 and a mounting shell 626; the brush head 61 is located at the top of the nozzle, and the connecting plate 621 is sleeved outside the nozzle; the rotating rod 622 penetrates through the connecting plate 621 and is connected with the brush head 61 at the front end and connected with the gear 623 at the rear end; the mounting shell 626 penetrates through the top of the front part 143 of the connecting sleeve 14 and is located below the gear 623; the rack 628 is engaged with the gear 623, and the sliding block 625 is arranged at the bottom end of the rack 628; the sliding block 625 is sleeved in the mounting shell 626 in a sliding and sealing manner, and the two ends of the spring 624 are connected with the sliding block 625 and the mounting shell 626, respectively. The bottom end of the mounting shell 626 is provided with a through hole in communication with the spray pipe 2, and the sidewall of the mounting shell 626 is provided with a stop block 627 for limiting the sliding block 625, which prevents the sliding block 625 from driving the rack 628 to disengage from the mounting shell 626.

[0049] Specific application cases For endotracheal intubation before general anesthesia induction, the pharynx, glottis area of the patient needs to be surface anesthetized to reduce the stress reaction (such as coughing, laryngospasm) during intubation. The anesthesia quantitative spraying device used in the anesthesiology department can accurately control the spraying amount of anesthetic (such as lidocaine spray), so as to avoid excessive amount (toxic risk) or insufficient amount (poor analgesic effect). In summary, although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A quantitative anesthetic spray device for use in anesthesiology departments, comprising a drug cartridge (1) and a spray tube (2) penetrating the drug cartridge (1), wherein the drug cartridge (1) includes a drug storage chamber (11) and a drug delivery chamber (12); characterized in that, Also includes: The valve mechanism (3) is located at the top center of the agent cylinder (1) and is used to open and close the spray pipe (2). The quantitative drug delivery mechanism (4) is active through the top of the drug cartridge (1); A continuous pressurization mechanism (5) is installed on the quantitative drug delivery mechanism (4) for continuous and uniform delivery pressure.

2. The anesthetic metering spray device for anesthesia departments according to claim 1, characterized in that, The valve mechanism (3) includes: The pressing plate (31) is slidably sleeved on the top of the medicine cylinder (1); Two limiting rods (32) are set on both sides of the spray pipe (2) to clamp the spray pipe (2). Two limiting components (33) are set at the bottom of the pressing plate (31) and slide in cooperation with the two ends of the limiting rod (32) to control the tension of the spray pipe (2) by the limiting rod (32).

3. The anesthetic metering spray device for anesthesia departments according to claim 1, characterized in that, The limiting component (33) includes: The limiting block (331) is connected to the bottom end of the pressing plate (31), and a slot (3311) is provided on the inner side wall. An elastic element (332) is disposed between the limiting block (331) and the medicine cylinder (1); The limiting plate (333) is connected to the inner side of the limiting block (331), and the limiting plate (333) has an arc-shaped limiting groove (3331) that matches the limiting rod (32). The locking rod (334) is hinged at one end to the medicine cylinder (1), and the other end is provided with a locking block (3341) that matches the locking groove (3311).

4. The anesthetic metering spray device for anesthesia departments according to claim 3, characterized in that, The quantitative drug delivery device (4) includes: A fixed sleeve (41) penetrates the medicine storage cavity (11), and a medicine inlet (411) is provided on the side wall near the bottom of the medicine storage cavity (11). The sliding sleeve (42) is movable through the fixed sleeve (41), and the side wall is provided with a drug delivery port (421) corresponding to the drug inlet (411). The piston rod (43) is slidably and sealingly fitted inside the sliding sleeve (42).

5. The anesthetic metering spray device for anesthesia departments according to claim 4, characterized in that, The inner wall of the fixed sleeve (41) is provided with an arc-shaped groove (412). The sliding sleeve (42) has a slider (422) that matches the slide groove (412) on its side wall, and the slider (422) is embedded in the slide groove (412).

6. The anesthetic metering spray device for anesthesia departments according to claim 5, characterized in that, The continuous pressurization mechanism (5) includes: Airbag 1 (51) is located at the bottom end of the sliding sleeve (42) and is used to pressurize the drug delivery chamber (12); Multiple inflation channels (52) are connected at one end to airbag 1 (51) and at the other end through the top of the sliding sleeve (42); The ventilation channel (53) is a ring structure that connects to the inflation channel (52) and is used to inflate the airbag (51). An inflation feedback component (54) is located at the top of the air passage (53) and is used to open and close multiple air passages (52) simultaneously.

7. The anesthetic metering spray device for anesthesia departments according to claim 6, characterized in that, The inflation feedback component (54) includes; Multiple display units (541) are set at the top of the ventilation channel (53) and correspond one-to-one with multiple inflation channels (52) to observe the inflation status while opening and closing the inflation channels (52); An inflation tube (542) is connected at its bottom end to a ventilation channel (53) and at both ends to a display element (541) for inflating the ventilation channel (53) and the display element (541). Multiple locking elements (543) are respectively installed at the connection between the inflation tube (542) and the air passage (53) to prevent the display element (541) from being over-inflated.

8. The anesthetic metering spray device for anesthesia departments according to claim 7, characterized in that, The display (541) includes: The observation sleeve (5411) is located at the top of the ventilation duct (53); Airbag 2 (5412) is installed inside the observation sleeve (5411); The movable plate (5413) is fitted onto the bottom of the second airbag (5412); The sealing plate (5414), which matches the inflation channel (52), is connected at its top to the movable plate (5413) via a connecting rope (5415) for opening the inflation channel (52) as the second airbag (5412) inflates and moves upward with the movable plate (5413).

9. The anesthetic metering spray device for anesthesia departments according to claim 1, characterized in that, Also includes: The cleaning mechanism (6) is located at the front end of the spray pipe (2) and works in conjunction with the continuous pressurization mechanism (5) to automatically clean the front end of the spray pipe (2).

10. The anesthetic metering spray device for anesthesia departments according to claim 9, characterized in that, The cleaning mechanism (6) includes: The brush head (61) is movable at the front end of the spray tube (2); The transmission assembly (62), connected to the brush head (61) and cooperating with the spray pipe (2), is used to rotate the brush head (61) when the air pressure is released.

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