CN213158496U

CN213158496U - Insulin syringe

Info

Publication number: CN213158496U
Application number: CN202020906221.6U
Authority: CN
Inventors: 陈金梅
Original assignee: Nanjing Brain Hospital
Current assignee: Nanjing Brain Hospital
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-05-11
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to an insulin syringe, adopt independent innovation structure, introduce front end sleeve (6) design of built-in front end baffle (7), place the front end of syringe needle (5) in alcohol cotton (9) region wherein, keep apart and disinfect with external environment, and in the contact of front end baffle (7) and injection position, realize stretching out of syringe needle (5) front end, and pierce the injection position, then use piston (2) compression mode, inject into patient's health with the liquid medicine, so combine the realization linkage operation together with the disinfection with the injection, the possibility that syringe needle (5) received the pollution has been stopped, furthest has guaranteed the cleanliness factor, the injection work efficiency has been improved.

Description

Insulin syringe

Technical Field

The utility model relates to an insulin syringe, which belongs to the technical field of medical consumables.

Background

Insulin injection is an important part of diabetes treatment methods, most patients operate themselves due to frequent injection times, and in the injection process, the patients are required to find injection positions, and the patients are required to perform conventional disinfection operation before injection, namely disinfection is required for injection positions, and for injectors used for multiple times, needles are required to be disinfected, so that the insulin injection process in practical application is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an insulin syringe is provided, adopt independently innovative structure, can disinfect to the syringe needle when the injection action, improve injection work efficiency.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme: the utility model designs an insulin syringe, which comprises an injection tube, a piston, a push rod, a press plate, a needle head, a front end sleeve, a front end clapboard, a spring, alcohol cotton and a sealing ring;

wherein, one end of the injection tube is open, the center of the other end is provided with an injection hole, and the tail end of the needle head can be detachably butted with the injection hole of the injection tube; the outer diameter of the piston is matched with the inner diameter of the injection tube, the central position of the back surface of the piston is fixedly connected with one end of a push rod, the push rod is vertical to the surface of the piston connected with the push rod, the central position of one surface of a pressure plate is fixedly connected with the other end of the push rod, the push rod is vertical to the surface of the pressure plate connected with the pressure plate, the front end surface of the piston is arranged in the injection tube from the open end of the injection tube, and the straight line where the push rod is arranged is;

one end of the front end sleeve is open, an injection hole is formed in the center of the other end of the front end sleeve, the inner diameter of the open end of the front end sleeve is larger than the outer diameter of the injection tube, the open end of the front end sleeve is sleeved at the injection hole end of the injection tube, and the center line of the front end sleeve is collinear with the center line of the injection tube; the outer side face of the edge of the injection hole of the injection tube is provided with an outer brim, the inner side face of the edge of the open end of the front end sleeve is provided with an inner brim, the inner diameter of the inner brim is smaller than the outer diameter of the outer brim, and the outer brim and the inner brim are mutually limited and are used for limiting and sleeving the front end sleeve on the injection hole end of the injection tube;

the outer diameter of the front end partition plate is matched with the inner diameter of the front end sleeve, the front end partition plate is fixedly arranged in the front end sleeve, the periphery of the edge of the front end partition plate is fixedly connected with the inner wall of the front end sleeve, the front end partition plate is perpendicular to the central line of the front end sleeve, a through hole penetrating through two surfaces of the front end partition plate is arranged in the center of the front end partition plate, the outer diameter of the sealing ring is matched with the inner diameter of the through hole, the sealing ring is fixedly arranged in the through hole, the inner diameter of the sealing ring is matched with the outer diameter of the needle head, the outer diameter of the spring is matched with the inner diameter of the front end sleeve, the spring is arranged in the front end sleeve and between the injection hole end of the injection tube and the front end partition plate, two ends of the spring respectively point to the injection tube; the front end of the needle head sequentially penetrates through the spring and the inner diameter hole of the sealing ring; based on the compression spring that the injection tube and the front end sleeve move towards each other, the front end of the needle head extends out of the injection hole of the front end sleeve, and under the elastic force action of the spring, the injection tube and the front end sleeve move towards each other, and the front end of the needle head moves into the alcohol cotton area.

As an optimal technical solution of the utility model: the rear baffle plate is arranged on the outer side of the injection tube, the outer side adjusting sleeve is arranged on the outer side of the injection tube, the inner side adjusting sleeve is arranged on the outer side of the injection tube, the two ends of the inner side adjusting sleeve are opened and communicated with each other, the outer diameter of the inner side adjusting sleeve is matched with the inner diameter of the injection tube, the inner wall of the outer side adjusting sleeve is provided with internal threads, the outer wall of the injection tube is provided with external threads, the internal threads on the inner wall of the outer side adjusting sleeve correspond to the external threads on the outer wall of the injection tube, the outer side adjusting sleeve is rotatably sleeved on the periphery of the injection tube through the open end of the injection tube, and the outer side adjusting sleeve realizes the back; the inner side adjusting sleeve extends into the injection cylinder from the open end of the injection cylinder, the center lines of the injection cylinder, the outer side adjusting sleeve and the inner side adjusting sleeve are collinear, the end part of the outer side adjusting sleeve, which is back to the needle head direction, and the end part of the inner side adjusting sleeve, which is back to the needle head direction, are positioned at the same height, are higher than the open end position of the injection cylinder and are lower than the pressure plate; one circle of the end part on the outer adjusting sleeve is fixedly butted with one circle of the end part on the inner adjusting sleeve, and the inner adjusting sleeve moves along with the back and forth movement of the outer adjusting sleeve along the central line direction of the injection cylinder;

the outer diameter of the rear baffle is matched with the inner diameter of the inner side adjusting sleeve, the push rod penetrates through the center of the surface of the rear baffle and is fixedly connected with the rear baffle, and the push rod is perpendicular to the surface of the rear baffle; the inner side surface of the end edge of the inner side adjusting sleeve facing the needle head direction in a circle is provided with an inner side limiting eave, the outer diameter of the rear baffle is larger than the inner diameter of the inner side limiting eave, and the inner side limiting eave is located between the rear baffle and the piston.

As an optimal technical solution of the utility model: still include the hard pipe, the soft pipe, the nozzle, flexible alcohol stock solution bag, wherein, the wherein one end of hard pipe penetrates wherein the alcohol cotton region by the front end sleeve outside, and this butt joint nozzle's of hard pipe end, hard pipe is fixed mutually with the front end sleeve, hard pipe is located the outer other end butt joint soft pipe's of front end sleeve wherein one end, the other end butt joint flexible alcohol stock solution bag's of soft pipe liquid outlet, flexible alcohol stock solution bag detachable connects in the telescopic outer wall of front end, the built-in alcohol of flexible alcohol stock solution bag, and through the extrusion, spout alcohol to the alcohol cotton by the nozzle through soft pipe, hard pipe.

An insulin syringe, technical scheme compares with prior art more than adopting has following technological effect:

(1) the utility model discloses an insulin syringe adopts independent innovation structure, introduces the front end sleeve design of built-in front end baffle, puts the front end of syringe needle in the alcohol cotton region wherein, keeps apart and disinfect with external environment, and in the contact of front end baffle and injection position, realize stretching out of syringe needle front end, and pierce the injection position, then in the application piston compression mode, inject the liquid medicine into patient's health, so combine injection and disinfection together and realize linkage operation, stopped the syringe needle and received the possibility of pollution, furthest guaranteed the cleanliness factor, improved injection work efficiency;

(2) in the designed insulin syringe, the liquid amount adjusting and controlling device is further introduced, the inner side adjusting sleeve is driven to move back and forth through the outer side adjusting sleeve based on the occlusion of the internal thread and the external thread and the back and forth movement along the central line direction of the injection tube, and the rear baffle on the push rod is limited by the inner side limiting eaves designed on the port of the inner side adjusting sleeve, so that the limit to the piston is obtained, the injection of quantitative liquid medicine is realized through the rotation of the outer side adjusting sleeve, and the convenience and the accuracy of the designed syringe are further improved;

(3) the utility model discloses in the insulin syringe that designs, further designed external degassing unit, used flexible alcohol stock solution bag, under the extrusion action, with alcohol through soft matter pipe, hard matter pipe by the nozzle spout to the alcohol cotton, can prolong alcohol cotton life as far as, keep its stable disinfection effect as far as possible, further guaranteed the availability factor of the syringe that designs.

Drawings

Fig. 1 is a schematic structural diagram of an insulin syringe designed by the present invention.

The device comprises an injection tube 1, a piston 2, a push rod 3, a pressure plate 4, a needle 5, a front end sleeve 6, a front end clapboard 7, a spring 8, alcohol cotton 9, a sealing ring 10, an outer brim 11, an inner brim 12, a rear baffle 13, an outer side adjusting sleeve 14, an inner side adjusting sleeve 15, an inner side limiting brim 16, a hard tube 17, a soft tube 18, a nozzle 19 and a flexible alcohol liquid storage bag 20.

Detailed Description

The following description will be provided to further explain embodiments of the present invention in detail with reference to the accompanying drawings.

The utility model relates to an insulin syringe, including injection tube 1, piston 2, push rod 3, clamp plate 4, syringe needle 5, front end sleeve 6, front end baffle 7, spring 8, alcohol cotton 9, sealing washer 10.

Wherein, one end of the injection tube 1 is open, the center of the other end is provided with an injection hole, and the tail end of the needle head 5 can be detachably butted with the injection hole of the injection tube 1; the outer diameter of the piston 2 is adapted to the inner diameter of the injection tube 1, one end of a butt-joint push rod 3 is fixedly arranged at the center of the back of the piston 2, the push rod 3 is perpendicular to the surface of the piston 2 connected with the push rod 3, the other end of the butt-joint push rod 3 is fixedly arranged at the center of one surface of a pressing plate 4, the push rod 3 is perpendicular to the surface of the pressing plate 4 connected with the push rod 3, the front end surface of the piston 2 is arranged in the injection tube 1 from the open end of the injection tube 1, and the straight line where the push rod 3 is.

One end of the front end sleeve 6 is open, an injection hole is formed in the center of the other end of the front end sleeve 6, the inner diameter of the open end of the front end sleeve 6 is larger than the outer diameter of the injection tube 1, the open end of the front end sleeve 6 is sleeved at the injection hole end of the injection tube 1, and the center line of the front end sleeve 6 is collinear with the center line of the injection tube 1; 1 injection hole edge of edge a week lateral surface of injection tube sets up outer eaves 11, and preceding end sleeve 6 opens the medial surface of edge a week and sets up interior eaves 12, and the internal diameter of interior eaves 12 is less than the external diameter of outer eaves 11, and outer eaves 11 is spacing each other with interior eaves 12 for 1 injection hole end of injection tube is located to 6 spacing covers of preceding end sleeve.

The outer diameter of a front end partition plate 7 is adapted to the inner diameter of a front end sleeve 6, the front end partition plate 7 is fixedly arranged inside the front end sleeve 6, the edge of the front end partition plate 7 is fixedly connected with the inner wall of the front end sleeve 6 in a circle, the front end partition plate 7 is perpendicular to the central line of the front end sleeve 6, a through hole penetrating through two surfaces of the front end partition plate 7 is arranged in the center of the front end partition plate 7, the outer diameter of a sealing ring 10 is adapted to the inner diameter of the through hole, the sealing ring 10 is fixedly arranged in the through hole, the inner diameter of the sealing ring 10 is adapted to the outer diameter of a needle 5, the outer diameter of a spring 8 is adapted to the inner diameter of the front end sleeve 6, the spring 8 is arranged inside the front end sleeve 6 and between the injection hole end of an injection tube 1 and the front end partition plate 7, two ends of the spring 8 are respectively directed to the injection tube 1 and the front end; the front end of the needle head 5 sequentially penetrates through the spring 8 and the inner diameter hole of the sealing ring 10; based on the compression spring 8 of the syringe 1 and the front sleeve 6 moving towards each other, the front end of the needle 5 protrudes out of the injection hole of the front sleeve 6, and under the elastic force of the spring 8, the syringe 1 and the front sleeve 6 move towards each other, and the front end of the needle 5 moves into the area of the alcohol cotton 9.

The insulin syringe designed by the technical scheme adopts an independent innovative structure, introduces the design of the front end sleeve 6 with the built-in front end clapboard 7, places the front end of the needle head 5 in the alcohol cotton 9 area, isolates and sterilizes the outside environment, realizes the extension of the front end of the needle head 5 and pierces the injection position in the contact of the front end clapboard 7 and the injection position, then injects the liquid medicine into the body of a patient in a piston 2 compression mode, so that the injection and the sterilization are combined together to realize linkage operation, the possibility of pollution to the needle head 5 is avoided, the cleanliness is ensured to the maximum extent, and the injection work efficiency is improved.

Based on the technical scheme of above-mentioned insulin syringe of designing, the utility model discloses following preferred technical scheme has further been designed: designing a rear baffle 13, an outer adjusting sleeve 14 and an inner adjusting sleeve 15, wherein two ends of the inner adjusting sleeve 15 are open and are communicated with each other, the outer diameter of the inner adjusting sleeve 15 is matched with the inner diameter of the injection tube 1, two ends of the outer adjusting sleeve 14 are open and are communicated with each other, the inner diameter of the outer adjusting sleeve 14 is matched with the outer diameter of the injection tube 1, the inner wall of the outer adjusting sleeve 14 is provided with internal threads, the outer wall of the injection tube 1 is provided with external threads, the internal threads of the inner wall of the outer adjusting sleeve 14 are corresponding to the external threads of the outer wall of the injection tube 1, the outer adjusting sleeve 14 is rotatably sleeved on the periphery of the injection tube 1 through the open end of the injection tube 1, and the outer adjusting sleeve 14 realizes; the inner side adjusting sleeve 15 extends into the injection tube 1 from the open end of the injection tube 1, the center lines of the injection tube 1, the outer side adjusting sleeve 14 and the inner side adjusting sleeve 15 are collinear, the end part of the outer side adjusting sleeve 14, which is back to the needle head 5, and the end part of the inner side adjusting sleeve 15, which is back to the needle head 5, are positioned at the same height, are higher than the open end position of the injection tube 1 and are lower than the pressure plate 4; one circle of the end part of the outer adjusting sleeve 14 is fixedly butted with one circle of the end part of the inner adjusting sleeve 15, and the inner adjusting sleeve 15 moves along with the back and forth movement of the outer adjusting sleeve 14 along the central line direction of the injection cylinder 1.

The outer diameter of the rear baffle 13 is matched with the inner diameter of the inner side adjusting sleeve 15, the push rod 3 penetrates through the center of the surface of the rear baffle 13, the push rod 3 is fixedly connected with the rear baffle 13, and the push rod 3 is perpendicular to the surface of the rear baffle 13; the inner side surface of the inner side adjusting sleeve 15 facing the periphery of the end edge of the needle head 5 is provided with an inner side limiting eave 16, the outer diameter of the rear baffle 13 is larger than the inner diameter of the inner side limiting eave 16, and the inner side limiting eave 16 is located between the rear baffle 13 and the piston 2.

According to the preferable scheme, a liquid amount adjusting and controlling device is further introduced, the outer adjusting sleeve 14 is meshed with the outer thread on the basis of the inner thread and moves back and forth along the direction of the central line of the injection tube 1, the inner adjusting sleeve 15 is driven to move back and forth, the rear baffle 13 on the push rod 3 is limited by the inner limiting eaves 16 designed at the end port of the inner adjusting sleeve, and then the piston 2 is limited, so that the injection of quantitative liquid medicine is realized through the rotation of the outer adjusting sleeve 14, and the convenience and the accuracy of the designed injector in use are further improved.

In addition, the design includes hard pipe 17, soft pipe 18, nozzle 19, flexible alcohol stock solution bag 20, wherein one end of hard pipe 17 penetrates wherein the alcohol cotton 9 region by the front end sleeve 6 outside, and the end butt joint nozzle 19's of hard pipe 17 end, hard pipe 17 is fixed mutually with front end sleeve 6, the other end butt joint soft pipe 18's wherein one end is located to hard pipe 17 outside front end sleeve 6, soft pipe 18's the other end butt joint flexible alcohol stock solution bag 20's liquid outlet, flexible alcohol stock solution bag 20 detachable connects in the outer wall of front end sleeve 6, flexible alcohol stock solution bag 20 is built-in alcohol, and through the extrusion, spout alcohol to alcohol cotton 9 by nozzle 19 through soft pipe 18, hard pipe 17.

The externally-hung disinfection device is designed, the flexible alcohol liquid storage bag 20 is used, alcohol is sprayed to the alcohol cotton 9 through the nozzle 19 through the soft pipe 18 and the hard pipe 17 under the extrusion action, the service life of the alcohol cotton 9 can be prolonged as far as possible, the stable disinfection effect of the alcohol cotton can be kept as far as possible, and the use efficiency of the designed injector is further guaranteed.

The insulin syringe designed by the technical scheme is applied to practice, the corresponding relation between the unit downward moving distance of the piston 2 and the injection amount of the liquid medicine is obtained according to the section size of the injection tube 1, the patient obtains the downward moving distance a of the piston 2 according to the injection amount of the liquid medicine at this time, the outer adjusting sleeve 14 is rotated, and the outer adjusting sleeve 14 is controlled to move downward moving distance a towards the needle head 5, namely the downward moving distance a of the inner limiting eave 16 at the port of the inner adjusting sleeve 15 towards the needle head 5 is obtained; then the patient holds the injection tube 1 by hand to push the front end of the front end sleeve 6 to the injection position, and the injection tube 1 and the front end sleeve 6 move towards each other along with the movement of the front end sleeve 6 to the injection position, so that on one hand, the spring 8 is extruded, the spring 8 is pressed and deformed to generate elasticity, and on the other hand, the front end of the needle head 5 extends out of an injection hole of the front end sleeve 6, namely, the needle head is pricked into the injection position; finally, the patient presses the pressing plate 4, the piston 2 moves towards the needle head 5 under the action of the push rod 3, liquid medicine is pushed to pass through the needle head 5, such as the body of the patient, and meanwhile, the piston 2 can only move to a corresponding position based on the limit of the inner limit eaves 16, namely the piston 2 moves downwards for a distance a towards the needle head 5, so that liquid medicine injection of corresponding liquid medicine amount is realized; after injection is finished, only the jacking force of the injection tube 1 to the injection position needs to be cancelled, and under the action of the elastic force of the spring 8, the injection tube 1 and the front end sleeve 6 move in opposite directions, and the front end of the needle head 5 moves to the area of the alcohol cotton 9.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An insulin pump, characterized in that: comprises an injection tube (1), a piston (2), a push rod (3), a pressure plate (4), a needle head (5), a front end sleeve (6), a front end clapboard (7), a spring (8), alcohol cotton (9) and a sealing ring (10);

wherein, one end of the injection tube (1) is open, the center of the other end is provided with an injection hole, and the tail end of the needle head (5) can be detachably butted with the injection hole of the injection tube (1); the outer diameter of the piston (2) is adapted to the inner diameter of the injection cylinder (1), the center of the back of the piston (2) is fixedly connected with one end of the push rod (3), the push rod (3) is vertical to the surface of the piston (2) connected with the push rod, the center of one surface of the pressing plate (4) is fixedly connected with the other end of the push rod (3), the push rod (3) is vertical to the surface of the pressing plate (4) connected with the push rod, the front end surface of the piston (2) is arranged in the injection cylinder (1) from the open end of the injection cylinder (1), and the straight line where the push rod (3) is arranged is collinear with the central line of the injection cylinder (1;

one end of the front end sleeve (6) is opened, an injection hole is formed in the center of the other end of the front end sleeve, the inner diameter of the opened end of the front end sleeve (6) is larger than the outer diameter of the injection tube (1), the opened end of the front end sleeve (6) is sleeved at the injection hole end of the injection tube (1), and the center line of the front end sleeve (6) is collinear with the center line of the injection tube (1); the outer brim (11) is arranged on the outer side face of the edge of an injection hole of the injection tube (1) in a circle, the inner brim (12) is arranged on the inner side face of the edge of an open end of the front end sleeve (6) in a circle, the inner diameter of the inner brim (12) is smaller than the outer diameter of the outer brim (11), and the outer brim (11) and the inner brim (12) are mutually limited and are used for limiting and sleeving the front end sleeve (6) at the injection hole end of the injection tube (1);

the outer diameter of a front end partition plate (7) is adapted to the inner diameter of a front end sleeve (6), the front end partition plate (7) is fixedly arranged inside the front end sleeve (6), one circle of the edge of the front end partition plate (7) is fixedly connected with the inner wall of the front end sleeve (6), the front end partition plate (7) is perpendicular to the central line of the front end sleeve (6), a through hole penetrating through two surfaces of the front end partition plate (7) is arranged in the central position of the front end partition plate (7), the outer diameter of a sealing ring (10) is adapted to the inner diameter of the through hole, the sealing ring (10) is fixedly arranged in the through hole, the inner diameter of the sealing ring (10) is adapted to the outer diameter of a needle (5), the outer diameter of a spring (8) is adapted to the inner diameter of the front end sleeve (6), the spring (8) is arranged inside the front end sleeve (6), the injection hole end of an injection tube (1) is arranged between the front end partition plate (7), two ends of the, alcohol cotton (9) is filled in the front end sleeve (6) and between the front end clapboard (7) and the injection end of the front end sleeve (6); the front end of the needle head (5) sequentially penetrates through the spring (8) and the inner diameter hole of the sealing ring (10); based on the fact that the injection cylinder (1) and the front end sleeve (6) move towards each other to compress the spring (8), the front end of the needle (5) extends out of the injection hole of the front end sleeve (6), and under the elastic force of the spring (8), the injection cylinder (1) and the front end sleeve (6) move oppositely to each other, and the front end of the needle (5) moves into the area of the alcohol cotton (9).

2. The insulin pump according to claim 1, wherein: also comprises a rear baffle (13), an outer side adjusting sleeve (14) and an inner side adjusting sleeve (15), wherein, the two ends of the inner adjusting sleeve (15) are opened and are communicated with each other, the outer diameter of the inner adjusting sleeve (15) is adapted to the inner diameter of the injection cylinder (1), the two ends of the outer adjusting sleeve (14) are opened and are communicated with each other, the inner diameter of the outer adjusting sleeve (14) is adapted to the outer diameter of the injection cylinder (1), the inner wall of the outer adjusting sleeve (14) is provided with internal threads, the outer wall of the injection cylinder (1) is provided with external threads, the inner thread of the inner wall of the outer adjusting sleeve (14) corresponds to the outer thread of the outer wall of the injection tube (1), the outer adjusting sleeve (14) is rotatably sleeved on the periphery of the injection tube (1) through the open end of the injection tube (1), and the outer adjusting sleeve (14) rotates to move back and forth along the central line direction of the injection tube (1); the inner side adjusting sleeve (15) extends into the injection cylinder (1) from the open end of the injection cylinder (1), the center lines of the injection cylinder (1), the outer side adjusting sleeve (14) and the inner side adjusting sleeve (15) are collinear, the end part of the outer side adjusting sleeve (14) back to the needle head (5) and the end part of the inner side adjusting sleeve (15) back to the needle head (5) are positioned at the same height, are higher than the open end position of the injection cylinder (1) and are lower than the pressure plate (4); one circle of the end part on the outer adjusting sleeve (14) is fixedly butted with one circle of the end part on the inner adjusting sleeve (15), and the inner adjusting sleeve (15) moves along with the back and forth movement of the outer adjusting sleeve (14) along the central line direction of the injection cylinder (1);

the outer diameter of the rear baffle (13) is matched with the inner diameter of the inner side adjusting sleeve (15), the push rod (3) penetrates through the center of the surface of the rear baffle (13), the push rod (3) is fixedly connected with the rear baffle (13), and the push rod (3) is perpendicular to the surface of the rear baffle (13); the inner side surface of the end edge of the inner side adjusting sleeve (15) facing the needle head (5) in the circumferential direction is provided with an inner side limiting eave (16), the outer diameter of the rear baffle (13) is larger than the inner diameter of the inner side limiting eave (16), and the inner side limiting eave (16) is located between the rear baffle (13) and the piston (2).

3. The insulin pump according to claim 1, wherein: the alcohol storage bag is characterized by further comprising a hard tube (17), a soft tube (18), a nozzle (19) and a flexible alcohol liquid storage bag (20), wherein one end of the hard tube (17) penetrates into the area of the alcohol cotton (9) from the outside of the front end sleeve (6), the end of the hard tube (17) is abutted to the tail end of the nozzle (19), the hard tube (17) is fixed with the front end sleeve (6), the other end, located outside the front end sleeve (6), of the hard tube (17) is abutted to one end of the soft tube (18), the other end of the soft tube (18) is abutted to a liquid outlet of the flexible alcohol liquid storage bag (20), the flexible alcohol liquid storage bag (20) is detachably connected to the outer wall of the front end sleeve (6), alcohol is filled in the flexible alcohol liquid storage bag (20), and is sprayed to the alcohol cotton (9) from the nozzle (19) through the soft tube (18) and the hard tube (17) by extrusion.