CN108553112B

CN108553112B - Vaccine activity detection extractor

Info

Publication number: CN108553112B
Application number: CN201810216058.8A
Authority: CN
Inventors: 徐磊; 徐锋; 苏杰; 谢波; 宋小莉
Original assignee: Beijing Huanuoxinde Technology Co ltd
Current assignee: Beijing huanuoxinde Technology Co.,Ltd.
Priority date: 2018-03-16
Filing date: 2018-03-16
Publication date: 2021-07-13
Anticipated expiration: 2038-03-16
Also published as: CN108553112A

Abstract

The invention relates to the field of biomedicine, in particular to a vaccine activity detection extractor which comprises a limiting structure, a refrigerating structure, a connecting sleeve, a resetting structure, an extracting structure, a transmission structure and a driving structure, wherein the limiting structure is arranged on the connecting sleeve; the limiting structure is fixed on the refrigerating structure, and one end of the refrigerating structure, which is far away from the limiting structure, is provided with the connecting sleeve; the connecting sleeve is connected with the resetting structure in a sliding manner; the reset structure is provided with the driving structure; the inside of structure that resets is equipped with the transmission structure, the transmission structure with the drive structure is contradicted, just the transmission structure connect in draw the structure, draw the structure run through in refrigeration structure extends to limit structure's inside, just draw the structure with refrigeration structure sliding connection.

Description

Vaccine activity detection extractor

Technical Field

The invention relates to the field of biomedicine, in particular to a vaccine activity detection extractor.

Background

The vaccine is a biological preparation which is prepared from bacteria, viruses, tumor cells and the like and can enable an organism to generate specific immunity, the immunity of a recipient is obtained through vaccination, the vaccine is widely used in animal breeding, and after animal vaccination, animal blood needs to be extracted for detection to determine the activity after the vaccination.

However, when the activity of the traditional pig vaccine is detected, the blood of the animal is extracted through the injector, the operation is inconvenient, the safety is low in the using process, the blood coagulation is easily caused by overhigh temperature after the blood is extracted, and the later-stage detection is not facilitated. In view of this, the present invention provides a vaccine activity detection extractor, which has the following characteristics:

(1) according to the vaccine activity detection extractor disclosed by the invention, the contact area between the extraction device and the extraction part of the animal is increased by using the limiting structure, the limiting effect on the extraction structure is realized, the damage to the animal caused by uneven stress during blood extraction is effectively prevented, and the extraction efficiency and the extraction quality are greatly improved.

(2) According to the vaccine activity detection extractor disclosed by the invention, the extraction structure is arranged between the limiting structure and the refrigeration structure, and the extraction structure is in sliding connection with the refrigeration structure through the reset structure, so that the use safety of the device is improved.

(3) According to the vaccine activity detection extractor disclosed by the invention, the refrigeration structure is clamped with the limiting structure, so that the peripheral temperature of the extraction device is conveniently reduced, the activity of the vaccine in blood is kept, and the extraction quality is improved.

(4) According to the vaccine activity detection extractor disclosed by the invention, the extraction structure is matched with the connecting sleeve and the transmission structure thereof, so that the blood of the injured part of a pig can be automatically extracted when the blood is extracted, the operation flexibility is greatly improved, and the device is more convenient to operate.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a vaccine activity detection extractor, the use of a limiting structure increases the contact area between an extraction device and an animal extraction part, has a limiting effect on the extraction structure, and simultaneously effectively prevents the animal from being damaged due to uneven stress when blood is extracted, thereby greatly improving the extraction efficiency and the extraction quality, the extraction structure is arranged between the limiting structure and a refrigeration structure, the extraction structure is in sliding connection with the refrigeration structure through a reset structure, the safety of the device is improved, the refrigeration structure is clamped with the limiting structure, the peripheral temperature of the extraction device is convenient to reduce, the activity of the vaccine in the blood is maintained, the extraction quality is improved, the extraction structure is matched with a connecting sleeve and a transmission structure thereof, the blood of the injured part of a pig is convenient to be automatically extracted when the blood is extracted, and the operation flexibility is greatly improved, the device is more convenient to operate.

The technical scheme adopted by the invention for solving the technical problems is as follows: a vaccine activity detection extractor comprises a limiting structure, a refrigerating structure, a connecting sleeve, a resetting structure, an extracting structure, a transmission structure and a driving structure; the limiting structure is fixed on the refrigerating structure, and one end of the refrigerating structure, which is far away from the limiting structure, is provided with the connecting sleeve; the connecting sleeve is connected with the resetting structure in a sliding manner; the reset structure is provided with the driving structure; the inside of structure that resets is equipped with the transmission structure, the transmission structure with the drive structure is contradicted, just the transmission structure connect in draw the structure, draw the structure run through in refrigeration structure extends to limit structure's inside, just draw the structure with refrigeration structure sliding connection.

Specifically, the limiting structure comprises a limiting sleeve, a fixing sleeve and a limiting groove, the fixing sleeve is in threaded connection with the refrigerating structure, the limiting sleeve is arranged at one end of the fixing sleeve, which is far away from the refrigerating structure, and the limiting groove is arranged inside the fixing sleeve; when the blood extractor is used, the limiting sleeve is abutted to the blood extraction part of the animal, the stress area is increased, and meanwhile, the use of the fixing sleeve matched with the limiting sleeve effectively prevents the extraction structure from accidentally injuring an operator when the blood extractor is not used, so that the use safety is improved.

Specifically, the refrigeration structure includes refrigeration case, sealing washer and locker room, the refrigeration case with fixed cover threaded connection, the refrigeration case deviates from the one end of fixed cover is equipped with the sealing washer, just the inside of refrigeration case is equipped with annular the locker room, the adapter sleeve with refrigeration case threaded connection, just the adapter sleeve with the sealing washer is contradicted, before the use, twists the adapter sleeve the inside in locker room adds the dry ice to reduce the temperature of device, effectually prevented the vaccine inactivation when drawing blood, improved the accuracy that the bacterin activity detected.

Specifically, the reset structure comprises a reset sleeve, a reset spring and a sleeve, the sleeve is connected to the driving structure, the connecting sleeve is embedded into the sleeve and is abutted against the reset sleeve, and the reset spring is arranged between the reset sleeve and the sleeve; when the device is used, the sleeve is driven to slide along the direction close to the refrigeration box, the return spring contracts, the sleeve drives the extraction structure to be embedded into the tissue of the animal extraction part, and meanwhile, the connecting sleeve and the sleeve have a limiting effect.

Specifically, the transmission structure comprises a guide sleeve, a driving spring and a stop block, the guide sleeve is in threaded connection with the sleeve, and the stop block is in sliding connection with the sleeve; the driving spring is arranged between the stop block and the extraction structure, the stop block is pressed, the stop block drives the extraction structure to work, and when the stop block is loosened, the driving spring enables the extraction structure to reset, so that the internal negative pressure of the extraction structure is enabled to be convenient for extracting blood.

Specifically, the extraction structure comprises an extraction cylinder, a needle, an observation window, a piston, a drive rod and a cutting sleeve, wherein one end of the cutting sleeve is arranged on the guide sleeve, the other end of the cutting sleeve is in threaded connection with the extraction cylinder, the observation window is arranged on the extraction cylinder, the needle is arranged at one end of the extraction cylinder, which is far away from the cutting sleeve, the piston is arranged in the extraction cylinder, the piston is in sliding connection with the extraction cylinder, the drive rod is fixed on the piston, penetrates through the cutting sleeve and extends to the stop block, the drive rod penetrates through the drive spring, is in sliding connection with the cutting sleeve, and is in sliding connection with the connecting sleeve and the refrigeration box; when the syringe is used, when the stop block is not in conflict, the drive spring drives the stop block to slide along the direction deviating from the extraction barrel, the stop block drives the drive rod to slide along the direction of the extraction barrel, the needle head at the extraction part is embedded to extract blood to the inside of the extraction barrel.

Specifically, the driving structure comprises a handle, a limiting rod and an anti-slip sleeve, the handle is fixed on the sleeve, the anti-slip sleeve is arranged on the handle, the limiting rod is rotatably arranged on the anti-slip sleeve, and the limiting rod is abutted to the stop block. .

The invention has the beneficial effects that:

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of an extraction device for detecting pig vaccine activity according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the connection structure of the refrigeration structure and the pouch shown in FIG. 1;

FIG. 3 is a schematic view of a connection structure between the reset structure and the transmission structure shown in FIG. 1;

FIG. 4 is a schematic structural diagram of a driving structure of a first embodiment of an extraction device for detecting pig vaccine activity, provided by the invention;

fig. 5 is a schematic structural diagram of a driving structure of a second embodiment of the extraction device for detecting pig vaccine activity provided by the invention.

In the figure: 1. spacing structure, 11, stop collar, 12, fixed cover, 13, spacing groove, 2, refrigeration structure, 21, refrigeration case, 22, sealing washer, 23, locker room, 3, adapter sleeve, 4, reset structure, 41, reset collar, 42, reset spring, 43, sleeve, 5, draw the structure, 51, draw a section of thick bamboo, 52, syringe needle, 53, observation window, 54, piston, 55, actuating lever, 56, cutting ferrule, 6, transmission structure, 61, uide bushing, 62, drive spring, 63, dog, 7, drive structure, 71, handle, 72, gag lever post, 73, antiskid cover, 74, limiting plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The first embodiment is as follows:

as shown in fig. 1 and fig. 3, a vaccine activity detection extractor according to a first embodiment of the present invention includes a limiting structure 1, a refrigerating structure 2, a connecting sleeve 3, a resetting structure 4, an extracting structure 5, a transmission structure 6, and a driving structure 7; the limiting structure 1 is fixed on the refrigerating structure 2, and one end of the refrigerating structure 2, which is far away from the limiting structure 1, is provided with the connecting sleeve 3; the connecting sleeve 3 is connected with the resetting structure 4 in a sliding manner; the reset structure 4 is provided with the driving structure 7; the inside of structure 4 that resets is equipped with drive structure 6, drive structure 6 with drive structure 7 is contradicted, just drive structure 6 connect in draw structure 5, draw structure 5 run through in refrigeration structure 2 extends to limit structure 1's inside, just draw structure 5 with refrigeration structure 2 sliding connection.

Specifically, as shown in fig. 1, in the vaccine activity detection extractor according to the first embodiment of the present invention, the limiting structure 1 includes a limiting sleeve 11, a fixing sleeve 12 and a limiting groove 13, the fixing sleeve 12 is in threaded connection with the refrigeration structure 2, the limiting sleeve 11 is disposed at one end of the fixing sleeve 12 away from the refrigeration structure 2, and the limiting groove 13 is disposed inside the fixing sleeve 12; when using, stop collar 11 contradicts with animal blood extraction position, has increased lifting surface area, and fixed cover 12 cooperation stop collar 11's use has simultaneously effectually prevented when not using extraction structure 5 accidental injury operator has improved the safety in utilization.

Specifically, as shown in fig. 1 and fig. 2, in the vaccine activity detection extractor according to the first embodiment of the present invention, the refrigeration structure 2 includes a refrigeration box 21, a sealing ring 22 and a storage chamber 23, the refrigeration box 21 is in threaded connection with the fixing sleeve 12, the sealing ring 22 is disposed at an end of the refrigeration box 21 away from the fixing sleeve 12, the annular storage chamber 23 is disposed inside the refrigeration box 21, the connection sleeve 3 is in threaded connection with the refrigeration box 21, and the connection sleeve 3 abuts against the sealing ring 22, before use, the connection sleeve 3 is screwed, and dry ice is added inside the storage chamber 23, so that the temperature of the apparatus is reduced, vaccine inactivation during blood extraction is effectively prevented, and the accuracy of vaccine activity detection is improved.

Specifically, as shown in fig. 1 and fig. 3, in the vaccine activity detection extractor according to the first embodiment of the present invention, the reset structure 4 includes a reset sleeve 41, a reset spring 42 and a sleeve 43, the sleeve 43 is connected to the driving structure 7, the connecting sleeve 3 is embedded inside the sleeve 43 and abuts against the reset sleeve 41, and the reset spring 42 is disposed between the reset sleeve 41 and the sleeve 43; when the device is used, the sleeve 43 is driven to slide along the direction close to the refrigeration box 21, the return spring 42 contracts, meanwhile, the sleeve 43 drives the extraction structure 5 to be embedded into the tissue of an animal extraction part, and meanwhile, the connecting sleeve 3 and the sleeve 43 have a limiting effect.

Specifically, as shown in fig. 1 and fig. 3, in the vaccine activity detection extractor according to the first embodiment of the present invention, the transmission structure 6 includes a guide sleeve 61, a driving spring 62 and a stopper 63, the guide sleeve 61 is in threaded connection with the sleeve 43, and the stopper 63 is in sliding connection with the sleeve 43; the driving spring 62 is arranged between the stop block 63 and the extraction structure 5, the stop block 63 is pressed, the stop block 63 drives the extraction structure 5 to work, and when the stop block 63 is loosened, the driving spring 62 enables the extraction structure 5 to reset, so that the internal negative pressure of the extraction structure 5 is enabled, and the blood extraction is convenient.

Specifically, as shown in fig. 1, fig. 3 and fig. 4, a vaccine activity detection extractor according to a first embodiment of the present invention, the extraction structure 5 comprises an extraction cylinder 51, a needle 52, a viewing window 53, a piston 54, a drive rod 55 and a ferrule 56, one end of the cutting sleeve 56 is arranged on the guide sleeve 61, the other end of the cutting sleeve 56 is in threaded connection with the extraction cylinder 51, the observation window 52 is arranged on the extraction cylinder 51, one end of the extraction cylinder 51, which faces away from the cutting sleeve 56, is provided with the needle 52, the piston 54 is arranged inside the extraction cylinder 51, the piston 54 is connected with the extraction cylinder 51 in a sliding way, the driving rod 55 is fixed to the piston 54 and extends to the stop 63 through the ferrule 56, the driving rod 55 penetrates the driving spring 62, the driving rod 55 is slidably connected with the sleeve chuck 56, and the extraction cylinder 51 is slidably connected with the connecting sleeve 3 and the refrigeration box 21; when the stopper 63 is not abutted, the driving spring 62 drives the stopper 63 to slide along a direction away from the extracting cylinder 51, the stopper 63 drives the driving rod 55 to slide along a direction away from the extracting cylinder 51, and the needle 52 embedded in the extracting part extracts blood into the extracting cylinder 51.

Specifically, as shown in fig. 1 and 4, in the vaccine activity detection extractor according to the first embodiment of the present invention, the driving structure 7 includes a handle 71, a limiting rod 72 and an anti-slip sleeve 73, the handle 71 is fixed to the sleeve 43, the anti-slip sleeve 73 is disposed on the handle 71, the limiting rod 72 is fixed to the anti-slip sleeve 73, and the limiting rod 72 abuts against the stopper 63; the limit rod 72 is rotated to limit the stop block 63, the piston 54 abuts against the bottom end of the extraction cylinder 51, when the limit rod 72 is loosened, the stop block 63 does not abut against the limit rod 72, and the drive spring 62 drives the drive rod 55 to drive the piston 54 to slide, so that blood enters the extraction cylinder 51 from the needle 52.

Example two:

as shown in fig. 1 and fig. 3, the vaccine activity detection extractor according to the second embodiment of the present invention includes a limiting structure 1, a refrigerating structure 2, a connecting sleeve 3, a resetting structure 4, an extracting structure 5, a transmission structure 6, and a driving structure 7; the limiting structure 1 is fixed on the refrigerating structure 2, and one end of the refrigerating structure 2, which is far away from the limiting structure 1, is provided with the connecting sleeve 3; the connecting sleeve 3 is connected with the resetting structure 4 in a sliding manner; the reset structure 4 is provided with the driving structure 7; the inside of structure 4 that resets is equipped with drive structure 6, drive structure 6 with drive structure 7 is contradicted, just drive structure 6 connect in draw structure 5, draw structure 5 run through in refrigeration structure 2 extends to limit structure 1's inside, just draw structure 5 with refrigeration structure 2 sliding connection.

Specifically, as shown in fig. 1, in the vaccine activity detection extractor according to the second embodiment of the present invention, the limiting structure 1 includes a limiting sleeve 11, a fixing sleeve 12 and a limiting groove 13, the fixing sleeve 12 is in threaded connection with the refrigeration structure 2, the limiting sleeve 11 is disposed at one end of the fixing sleeve 12 away from the refrigeration structure 2, and the limiting groove 13 is disposed inside the fixing sleeve 12; when using, stop collar 11 contradicts with animal blood extraction position, has increased lifting surface area, and fixed cover 12 cooperation stop collar 11's use has simultaneously effectually prevented when not using extraction structure 5 accidental injury operator has improved the safety in utilization.

Specifically, as shown in fig. 1 and fig. 2, in the vaccine activity detection extractor according to the second embodiment of the present invention, the refrigeration structure 2 includes a refrigeration box 21, a sealing ring 22 and a storage chamber 23, the refrigeration box 21 is in threaded connection with the fixing sleeve 12, the sealing ring 22 is disposed at an end of the refrigeration box 21 away from the fixing sleeve 12, the annular storage chamber 23 is disposed inside the refrigeration box 21, the connection sleeve 3 is in threaded connection with the refrigeration box 21, and the connection sleeve 3 abuts against the sealing ring 22, before use, the connection sleeve 3 is screwed, and dry ice is added inside the storage chamber 23, so as to reduce the temperature of the apparatus, effectively prevent vaccine inactivation during blood extraction, and improve the accuracy of vaccine activity detection.

Specifically, as shown in fig. 1 and fig. 3, in the vaccine activity detection extractor according to the second embodiment of the present invention, the reset structure 4 includes a reset sleeve 41, a reset spring 42 and a sleeve 43, the sleeve 43 is connected to the driving structure 7, the connecting sleeve 3 is embedded inside the sleeve 43 and is abutted against the reset sleeve 41, and the reset spring 42 is disposed between the reset sleeve 41 and the sleeve 43; when the device is used, the sleeve 43 is driven to slide along the direction close to the refrigeration box 21, the return spring 42 contracts, meanwhile, the sleeve 43 drives the extraction structure 5 to be embedded into the tissue of an animal extraction part, and meanwhile, the connecting sleeve 3 and the sleeve 43 have a limiting effect.

Specifically, as shown in fig. 1 and fig. 3, in the vaccine activity detection extractor according to the second embodiment of the present invention, the transmission structure 6 includes a guide sleeve 61, a driving spring 62 and a stopper 63, the guide sleeve 61 is in threaded connection with the sleeve 43, and the stopper 63 is in sliding connection with the sleeve 43; the driving spring 62 is arranged between the stop block 63 and the extraction structure 5, the stop block 63 is pressed, the stop block 63 drives the extraction structure 5 to work, and when the stop block 63 is loosened, the driving spring 62 enables the extraction structure 5 to reset, so that the internal negative pressure of the extraction structure 5 is enabled, and the blood extraction is convenient.

Specifically, as shown in fig. 1, 3 and 5, a vaccine activity detection extractor according to the second embodiment of the present invention, the extraction structure 5 comprises an extraction cylinder 51, a needle 52, a viewing window 53, a piston 54, a drive rod 55 and a ferrule 56, one end of the cutting sleeve 56 is arranged on the guide sleeve 61, the other end of the cutting sleeve 56 is in threaded connection with the extraction cylinder 51, the observation window 52 is arranged on the extraction cylinder 51, one end of the extraction cylinder 51, which faces away from the cutting sleeve 56, is provided with the needle 52, the piston 54 is arranged inside the extraction cylinder 51, the piston 54 is connected with the extraction cylinder 51 in a sliding way, the driving rod 55 is fixed to the piston 54 and extends to the stop 63 through the ferrule 56, the driving rod 55 penetrates the driving spring 62, the driving rod 55 is slidably connected with the sleeve chuck 56, and the extraction cylinder 51 is slidably connected with the connecting sleeve 3 and the refrigeration box 21; when the stopper 63 is not abutted, the driving spring 62 drives the stopper 63 to slide along a direction away from the extracting cylinder 51, the stopper 63 drives the driving rod 55 to slide along a direction away from the extracting cylinder 51, and the needle 52 embedded in the extracting part extracts blood into the extracting cylinder 51.

Specifically, as shown in fig. 1 and 5, in the vaccine activity detection extractor according to the second embodiment of the present invention, the driving structure 7 includes a handle 71, a limiting rod 72, an anti-slip sleeve 73 and a limiting plate 74, the handle 71 is fixed to the sleeve 43, the anti-slip sleeve 73 is disposed on the handle 71, the limiting rod 72 penetrates through the anti-slip sleeve 73, the limiting rod 72 abuts against the stopper 63, the limiting rod 72 is slidably connected to the handle 71, and the limiting plate 74 is disposed at one end of the limiting rod 72 away from the stopper 63; the stopper 63 is limited by pressing the limiting rod 72, the piston 54 abuts against the bottom end of the extraction cylinder 51, when the limiting rod 72 is loosened, the stopper 63 does not abut against the limiting rod 72, the driving rod 55 is driven by the driving spring 62 to drive the piston 54 to slide, so that blood enters the extraction cylinder 51 from the needle 52.

Firstly screwing the connecting sleeve 3, adding dry ice in the refrigeration structure 2, then assembling the device, adjusting the limiting rod 72 to enable the limiting rod 72 to abut against the transmission structure 6, then holding the handle 71 by hand, abutting the limiting structure 1 against the blood extraction part of the animal, pressing the handle 71, driving the extraction structure 5 to be embedded into the tissue of the pig extraction part by the reset structure 4, adjusting the limiting rod 72, and driving the extraction structure 5 by the transmission structure 6 to extract blood; the method specifically comprises the following steps:

(1) before using, twist and move adapter sleeve 3, add the dry ice in the inside of locker room 23 to reduce the temperature of device, effectually prevented the inactivated of vaccine when drawing blood, improved the accuracy that bacterin activity detected, drive gag lever post 72 carries on spacingly to dog 63, and piston 54 contradicts with the bottom that draws a section of thick bamboo 51.

(2) The handle 71 is pressed, the handle drives the sleeve 43 to slide along the direction close to the refrigeration box 21, the return spring 42 contracts, the sleeve 43 enables the limiting sleeve 11 on the refrigeration box 21 on one side of the connecting sleeve 3 to be abutted against the animal blood extraction part, and the needle 52 is embedded into the tissue of the extraction part.

(3) When the limiting rod 72 is released, the stop 63 does not interfere with the limiting rod 72, the driving spring 62 drives the driving rod 55 to drive the piston 54 to slide, so that blood enters the interior of the extraction cylinder 51 from the needle 52, and then the device is pulled out through the handle 71.

The use of the limit structure 1 of the invention increases the contact area of the extraction device and the animal extraction part, to extraction structure 5 limiting effect, the inhomogeneous damage that causes the animal of atress when simultaneously effectual preventing to draw blood, the efficiency of extraction is greatly improved and the quality of drawing is improved, extraction structure 5 is located between limit structure 1 and the refrigeration structure 2, extraction structure 5 is through reset structure 4 and refrigeration structure 2 sliding connection, the security of device use has been improved, refrigeration structure 2 and 1 block of limit structure, be convenient for reduce extraction device's peripheral temperature, the activity of the bacterin in the blood has been kept, the quality of drawing is improved, extraction structure 5 cooperation adapter sleeve 3 and its drive structure 6's use, be convenient for draw the blood of the injured position of pig voluntarily when drawing blood, the flexibility of operation has been greatly improved, it is more convenient to make the device operation.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A vaccine activity detection extractor is characterized by comprising a limiting structure (1), a refrigerating structure (2), a connecting sleeve (3), a resetting structure (4), an extracting structure (5), a transmission structure (6) and a driving structure (7); the limiting structure (1) is fixed on the refrigerating structure (2), and one end of the refrigerating structure (2) departing from the limiting structure (1) is provided with the connecting sleeve (3); the connecting sleeve (3) is in sliding connection with the resetting structure (4); the reset structure (4) is provided with the driving structure (7); the transmission structure (6) is arranged inside the reset structure (4), the transmission structure (6) is abutted against the driving structure (7), the transmission structure (6) is connected to the extraction structure (5), the extraction structure (5) penetrates through the refrigeration structure (2) and extends to the inside of the limiting structure (1), and the extraction structure (5) is in sliding connection with the refrigeration structure (2);

the limiting structure (1) comprises a limiting sleeve (11), a fixing sleeve (12) and a limiting groove (13), the fixing sleeve (12) is in threaded connection with the refrigerating structure (2), the limiting sleeve (11) is arranged at one end, away from the refrigerating structure (2), of the fixing sleeve (12), and the limiting groove (13) is arranged inside the fixing sleeve (12);

the refrigeration structure (2) comprises a refrigeration box (21), a sealing ring (22) and a storage chamber (23), the refrigeration box (21) is in threaded connection with the fixed sleeve (12), the sealing ring (22) is arranged at one end, deviating from the fixed sleeve (12), of the refrigeration box (21), the annular storage chamber (23) is arranged inside the refrigeration box (21), the connecting sleeve (3) is in threaded connection with the refrigeration box (21), and the connecting sleeve (3) is abutted to the sealing ring (22);

the reset structure (4) comprises a reset sleeve (41), a reset spring (42) and a sleeve (43), the sleeve (43) is connected to the driving structure (7), the connecting sleeve (3) is embedded into the sleeve (43) and is abutted against the reset sleeve (41), and the reset spring (42) is arranged between the reset sleeve (41) and the sleeve (43);

the transmission structure (6) comprises a guide sleeve (61), a driving spring (62) and a stop block (63), the guide sleeve (61) is in threaded connection with the sleeve (43), and the stop block (63) is in sliding connection with the sleeve (43); the driving spring (62) is arranged between the stop block (63) and the extraction structure (5);

the extraction structure (5) comprises an extraction cylinder (51), a needle (52), an observation window (53), a piston (54), a drive rod (55) and a clamping sleeve (56), one end of the clamping sleeve (56) is arranged on the guide sleeve (61), the other end of the clamping sleeve (56) is in threaded connection with the extraction cylinder (51), the observation window (52) is arranged on the extraction cylinder (51), one end of the extraction cylinder (51) departing from the clamping sleeve (56) is provided with the needle (52), the piston (54) is arranged in the extraction cylinder (51), the piston (54) is in sliding connection with the extraction cylinder (51), the drive rod (55) is fixed on the piston (54) and penetrates through the clamping sleeve (56) to extend to the stop block (63), the drive rod (55) penetrates through the clamping sleeve (62), and the drive rod (55) is in sliding connection with the clamping sleeve (56), the extraction cylinder (51) is in sliding connection with the connecting sleeve (3) and the refrigeration box (21) thereof;

the driving structure (7) comprises a handle (71), a limiting rod (72) and an anti-skidding sleeve (73), the handle (71) is fixed on the sleeve (43), the anti-skidding sleeve (73) is arranged on the handle (71), the limiting rod (72) is rotatably arranged on the anti-skidding sleeve (73), and the limiting rod (72) is abutted to the stop block (63).