CN110051453B - Intradermal injection device for animals and injection aid therefor - Google Patents
Intradermal injection device for animals and injection aid therefor Download PDFInfo
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- CN110051453B CN110051453B CN201910473475.5A CN201910473475A CN110051453B CN 110051453 B CN110051453 B CN 110051453B CN 201910473475 A CN201910473475 A CN 201910473475A CN 110051453 B CN110051453 B CN 110051453B
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- syringe
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- 238000002347 injection Methods 0.000 title claims abstract description 115
- 239000007924 injection Substances 0.000 title claims abstract description 115
- 241001465754 Metazoa Species 0.000 title claims abstract description 65
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 239000003814 drug Substances 0.000 claims description 84
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 210000003491 skin Anatomy 0.000 description 40
- 239000007788 liquid Substances 0.000 description 39
- 241000283690 Bos taurus Species 0.000 description 17
- 238000003860 storage Methods 0.000 description 15
- 229940079593 drug Drugs 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 201000008827 tuberculosis Diseases 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3148—Means for causing or aiding aspiration or plunger retraction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M2005/3152—Piston or piston-rod constructions, e.g. connection of piston with piston-rod including gearings to multiply or attenuate the piston displacing force
Abstract
The invention provides an animal intradermal injection auxiliary device which comprises a shell, a positioning block, a skin fixing clamp, a movable handle and a transmission piece. The positioning block is arranged on the shell and is provided with a guide hole which is penetrated by the needle head of the syringe in a penetrating way; the skin fixing clamp comprises an adjusting clamping piece, a movable clamping piece and a position adjusting piece, wherein the adjusting clamping piece and the movable clamping piece are arranged on the shell, and the position adjusting piece is used for adjusting the distance between the adjusting clamping piece and the guide hole; the movable handle is rotatably arranged on the shell, the pressing piece is arranged on the movable handle, the transmission piece is rotatably arranged on the shell, and the opposite ends of the transmission piece can be respectively matched with the pressing piece and the movable clamping piece so as to drive the movable clamping piece to move towards the adjusting clamping piece when the movable handle rotates, and further clamp animal skin. The animal intradermal injection aid can improve the success rate of the animal intradermal injection. The invention also provides an animal intradermal injection device using the animal intradermal injection aid.
Description
Technical Field
The invention relates to an animal intradermal injection device, in particular to an animal intradermal injection device and an injection aid thereof.
Background
In cattle breeding, particularly dairy cattle breeding, tuberculosis skin test drug injection is required to be carried out on whole cattle twice per year so as to detect whether tuberculosis exists in cattle groups. The skin of the cow neck side is pinched by the left hand during injection, the needle head is accurately positioned in the cow skin layer by the right hand injector, and a predetermined amount of medicine is injected into the needle along the direction approximately parallel to the skin, so that a bulge with the size of soybean is formed in the skin, and the bulge is not disappeared after the needle is pulled out, thus being successful. In the process of pinching the skin on the neck side of the cow, the cow can struggle, so that the needle is difficult to position on the skin of the cow, and the condition that the needle pierces the skin to cause injection failure easily occurs, so that multiple injections are needed. Therefore, the injection requires high operator demands, and only a few professionals can be skilled to operate, which brings great difficulty to production.
In addition, the prior art generally employs a continuous syringe for injecting a tuberculosis skin test drug into a cow, which generally includes a syringe, a piston installed in the syringe, a push rod connected to the piston, and a drug supply bottle installed on the syringe. The injected liquid medicine enters the injection cylinder from the medicine supply bottle, and the piston is driven to move towards the needle head through the push rod so as to inject the liquid medicine into the animal body, and the following problems exist in actual operation: 1. when the continuous injector is used, the injected liquid medicine amount is controlled through the moving distance of the push rod, the injection needs to be kept highly concentrated every time, the moving speed of the push rod is not too high, otherwise, the push rod is easy to move in place, the liquid medicine amount injected every time is difficult to accurately control, and fatigue is easy to cause; when the continuous injector is used, the push rod drives the piston to move by rotating the push rod, so that the probability of excessive injected liquid medicine caused by too fast movement of the push rod can be reduced, however, the injection time is prolonged, animals struggle in the actual operation process, and the injection difficulty is obviously increased by the prolonged injection time; 2. in the continuous injector in the prior art, the liquid medicine amount in the injection cylinder is always larger than the liquid medicine amount required by one-time injection, and when the injection is finished, the liquid medicine is always remained in the injection cylinder, so that the waste of liquid medicine resources is caused.
Disclosure of Invention
The invention aims to at least solve one of the technical problems, and provides an animal intradermal injection device which can improve the success rate of intradermal injection.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an animal intradermal injection device comprising an injector comprising a syringe, a plunger disposed within the syringe and a plunger coupled to the plunger, the animal intradermal injection device further comprising an animal intradermal injection aid comprising:
a housing;
the syringe fixing seat is arranged on the shell, can move along a first direction under force, is parallel to the movement direction of the push rod, and is arranged on the syringe fixing seat;
the positioning block is arranged on the shell, and a guide hole for a needle head of the syringe to pass through is formed in the positioning block in a penetrating manner along the first direction;
the skin fixing clamp and the injector fixing seat are respectively positioned on two opposite sides of the positioning block, the skin fixing clamp comprises an adjusting clamping piece, a movable clamping piece and a position adjusting piece, the adjusting clamping piece and the movable clamping piece are arranged on the shell at intervals along a second direction perpendicular to the first direction and can bear force to slide relative to the shell, a clamping space for placing animal skin is formed between the adjusting clamping piece and the movable clamping piece, and the position adjusting piece is arranged on the shell and is connected with the adjusting clamping piece so as to drive the adjusting clamping piece to move along the second direction and further adjust the distance between the adjusting clamping piece and the guide hole;
the movable handle is rotatably arranged on the shell through a pivoting part, a pressing piece, a first pushing piece and a second pushing piece are arranged on the movable handle at intervals, the pressing piece, the first pushing piece and the second pushing piece are all positioned on the same side of the pivoting part and gradually far away from the pivoting part, and when the movable handle rotates, the first pushing piece can push the syringe fixing seat to move towards the positioning block to perform needle insertion, and the second pushing piece can push the push rod of the syringe to perform injection; and
The transmission piece is rotatably arranged on the shell, and two opposite ends of the transmission piece can be respectively matched with the pressing piece and the movable clamping piece, so that the movable clamping piece is driven to move towards the adjusting clamping piece when the movable handle rotates, and the animal skin is clamped.
Further, the injection tube comprises an embedded tube and an outer sleeve which are coaxially arranged, wherein a first port and a second port which are communicated with the inner cavity of the embedded tube are respectively arranged at the opposite ends of the embedded tube, and the first port is used for installing a needle; the piston is slidably arranged in the embedded cylinder and is in sealing contact with the inner peripheral wall of the embedded cylinder; the push rod is parallel to the injection cylinder, one end of the push rod enters the embedded cylinder through the second port to be connected with the piston, and the other end of the push rod penetrates through the outer sleeve; the push rod is also in threaded connection with the outer sleeve; the inner diameter of the outer sleeve is larger than the inner diameter of the embedded cylinder; the embedded cylinder is arranged on the syringe fixing seat; the injector also comprises an injector spring, wherein the injector spring is arranged in parallel with the outer sleeve, and the opposite ends of the injector spring are respectively connected with the outer sleeve and the embedded cylinder; the piston can be driven to move to the first port of the embedded cylinder along the embedded cylinder by pushing the push rod.
Further, a medicine inlet is formed in the peripheral wall of the embedded cylinder in a penetrating manner, the medicine inlet is arranged close to the first port, the medicine inlet is communicated with the inner cavity of the embedded cylinder, and a one-way valve is arranged at the medicine inlet; the distance from one end of the outer sleeve, which is close to the first port, to the medicine inlet is larger than the maximum distance from the piston to the first port.
Further, the adjusting clamping piece is provided with a bulge avoiding hole in a penetrating way.
Further, the position adjusting piece comprises an adjusting screw and an elastic piece, the adjusting screw is parallel to the second direction, the adjusting screw is in threaded connection with the shell, and one end of the adjusting screw can prop against the side surface, opposite to the movable clamping piece, of the adjusting clamping piece; the elastic piece is sleeved outside the adjusting screw, and two opposite ends of the elastic piece are respectively connected with the shell and the adjusting clamping piece.
Further, a guide rod parallel to the second direction is arranged on the shell, a guide hole is formed in the injector fixing seat in a penetrating mode along the second direction, and the guide rod penetrates through the guide hole in a sliding mode; the animal intradermal injection auxiliary device further comprises a resetting piece, the resetting piece is sleeved on the guide rod, and two opposite ends of the resetting piece are respectively abutted against the shell and the syringe fixing seat.
Further, the transmission piece is connected with the shell through a connecting shaft, a torsion spring is sleeved on the connecting shaft, and two tail ends of the torsion spring are respectively connected with the shell and the transmission piece.
Further, the movable clamping piece is also connected with the shell through a return spring.
The present invention also provides an animal intradermal injection aid comprising:
a housing;
the positioning block is arranged on the shell, and a guide hole for a needle head of a syringe to pass through is formed in a penetrating manner along a first direction;
the skin fixing clamp comprises an adjusting clamping piece, a movable clamping piece and a position adjusting piece, wherein the adjusting clamping piece and the movable clamping piece are arranged on the shell at intervals along a second direction perpendicular to the first direction and can bear force to slide relative to the shell, a clamping space for placing animal skin is formed between the adjusting clamping piece and the movable clamping piece in a surrounding mode, and the position adjusting piece is arranged on the shell and is connected with the adjusting clamping piece so as to drive the adjusting clamping piece to move along the second direction, and then the distance between the adjusting clamping piece and the guide hole is adjusted;
the movable handle is rotatably arranged on the shell through a pivot part, and a pressing piece is arranged on the movable handle; and
The transmission piece is rotationally arranged on the shell, and two opposite ends of the transmission piece can be respectively matched with the pressing piece and the movable clamping piece so as to drive the movable clamping piece to move towards the adjusting clamping piece when the movable handle rotates.
Further, the animal intradermal injection aid further comprises a syringe fixing seat for mounting a syringe, wherein the syringe fixing seat is arranged on the shell and can be stressed to move along the first direction; the movable handle is characterized in that a first pushing piece and a second pushing piece are further arranged on the movable handle, the pressing piece, the first pushing piece and the second pushing piece are located on the same side of the pivoting portion and gradually far away from the pivoting portion, and when the movable handle rotates, the first pushing piece can push the syringe fixing seat to move towards the positioning block to perform needle insertion, and the second pushing piece can push the push rod of the syringe to perform injection.
By adopting the technical scheme, the invention has the following beneficial effects:
1. according to the animal intradermal injection device and the animal intradermal injection auxiliary device, during injection, animal skin is clamped between the adjusting clamping piece and the movable clamping piece of the skin fixing clamp, the needle head of the injector is guided by the guide holes, the needle inlet direction of the needle head is ensured to be parallel to the skin, the distance between the adjusting clamping piece and the guide holes is adjusted by the position adjusting piece, the needle inlet position of the needle head on the skin is adjusted, the needle head is prevented from penetrating the skin, the probability of failed injection caused by the needle head penetrating the skin is reduced, and the success rate of intradermal injection is further improved.
2. According to the intradermal injection device for animals, the movable clamping piece can be driven to move towards the adjusting clamping piece when the movable handle rotates so as to clamp the skin of the animals, the first pushing piece pushes the injector fixing seat to move towards the positioning block so as to advance the needle, the second pushing piece pushes the push rod of the injector so as to perform injection, continuous operation of skin clamping and fixing, needle insertion and injection operation is achieved, and the working efficiency of animal injection is further improved.
3. Above-mentioned intradermal injection device of animal, after the injection is accomplished, still can realize automatic needle withdrawal through restoring member, torsional spring, it is more convenient to use, has further improved work efficiency.
4. When the animal intradermal injection device is used, firstly, the piston is pushed to a preset position of the embedded cylinder by rotating the push rod according to the required injection liquid medicine amount, and at the moment, the liquid medicine amount in a medicine storage space enclosed by the embedded cylinder and the piston is the liquid medicine amount required to be injected each time; then, the push rod is directly pushed to the end of the embedded cylinder, so that the liquid medicine in the medicine storage space can be completely injected into the animal body by the piston. Because the liquid medicine quantity injected each time is adjusted before injection, the push rod does not need to pay attention to the advancing distance during injection, the use is more convenient, and the injection efficiency is higher; meanwhile, the liquid medicine in the medicine storage space can be completely pushed into the animal body after each injection, so that the waste of the liquid medicine is avoided. After the injection is completed, the injector spring can reset the outer sleeve and the piston, so that the same liquid medicine amount is ensured for each injection.
Drawings
Fig. 1 is a schematic view showing the structure of an intradermal injection device for animals according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural view of a syringe according to a preferred embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of fig. 2 taken along line A-A.
Fig. 4 is a schematic view of the structure of the outer sleeve of the syringe according to the preferred embodiment of the present invention.
Fig. 5 is a partial structural view of fig. 1.
Fig. 6 is a schematic view showing the structure of a syringe holder in the intradermal injection device of fig. 1.
Fig. 7 is an enlarged view of fig. 5 at B.
Fig. 8 is a partial structural view of fig. 7.
Fig. 9 is a schematic cross-sectional view of the adjusting screw of fig. 8 at the point of attachment of the indicator needle.
Fig. 10 is a top view of an adjustment clip in the animal intradermal injection device of fig. 1.
Fig. 11 is a view showing a state of use of the intradermal injection device for animals according to the preferred embodiment of the present invention.
Description of the main reference signs
100-animal intradermal injection device, 2-syringe, 21-syringe, 212-in-line cartridge, 2121-first port, 2124-second port, 2126-inlet port, 2127-web, 214-outer sleeve, 2141-end plate, 2143-barrel, 2144-gap, 2145-connector, 23-plunger, 24-plunger, 26-plunger knob, 25-syringe spring, 26-needle, 27-buffer, 28, 29-check valve, 3-vial, 4-animal intradermal injection aid, 41-housing, 411-guide bar, 412-mount guide rail, 414-mount slide rail, 416-mount slide rail, 418-scale, 42-syringe mount, 421-guide hole 423-fixed seat slide, 43-positioning block, 431-guiding hole, 44-skin fixing clip, 441-adjusting clip, 4411-mounting rail, 4413-bulge avoidance hole, 443-movable clip, 4431-clip body, 4432-triggering part, 4434-mounting rail, 445-position adjusting piece, 4451-adjusting screw, 4453-elastic piece, 4454-indicator needle, 4455-limit groove, 4456-sleeve, 4457-indicator rod, 446-clamping space, 447-flexible layer, 45-movable handle, 451-pivoting part, 46-transmission piece, 461-connecting shaft, 463-torsion spring, 471-pressing piece, 472-first pushing piece, 473-second pushing piece, 48-resetting piece, 49-resetting spring, 5-screw, 200-cow hide.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a preferred embodiment of the present invention provides an animal intradermal injection device 100 comprising a syringe 2 and an animal intradermal injection aid 4, wherein the animal intradermal injection aid 4 is used for installing the syringe 2 to aid in the injection operation of the syringe 2.
Referring to fig. 2, in the present embodiment, the syringe 2 includes a syringe 21, a piston 23 installed in the syringe 21, a push rod 24 connected to the piston 23, and a syringe spring 25. The syringe 21 includes a coaxially disposed inner barrel 212 and an outer sleeve 214. The opposite ends of the inner cylinder 212 are respectively provided with a first port 2121 and a second port 2124 which are communicated with the inner cavity of the inner cylinder 212, and the first port 2121 is used for installing the needle 26. In this embodiment, the needle 26 is threadably coupled to the insert 212 to facilitate removal and replacement of the needle 26. A one-way valve 29 is mounted to the first port 2121, and the one-way valve 29 allows only the liquid medicine to flow out from the cartridge 212 toward the needle 26, but does not allow the liquid medicine to flow back. The peripheral wall of the embedded cylinder 212 is further provided with a medicine inlet 2126 in a penetrating manner, and the medicine inlet 2126 is communicated with the inner cavity of the embedded cylinder 212 and is used for installing the medicine supplying bottle 3, and the installation of the medicine supplying bottle 3 belongs to the prior art and is omitted for brevity and not described in detail herein. A check valve 28 is provided at the inlet 2126, and the check valve 28 allows only the liquid medicine to flow out from the bottle 3 toward the cartridge 212, but does not allow the liquid medicine to flow back. The construction and installation of the non-return valves 28,29 are of the prior art and will not be described in detail here for the sake of brevity. Preferably, the drug inlet 2126 is disposed proximate to the first port 2121 of the cartridge 212.
The piston 23 is slidably installed in the insert cylinder 212 and is in sealing contact with the inner circumferential wall of the insert cylinder 212, so as to prevent the liquid medicine in the insert cylinder 212 from leaking from the second port 2124 of the insert cylinder 212. The piston 23 and the embedded cylinder 212 together define a medicine storage space for storing medicine liquid. The insert 212 is preferably made of a transparent material to facilitate viewing of the medical fluid within the medication reservoir. The embedded cylinder 212 is also provided with capacity scales, so that the medicine liquid amount in the medicine storage space can be conveniently known. The push rod 24 is a screw rod, the push rod 24 is parallel to the injection tube 2, one end of the push rod 24 enters the embedded tube 212 through the second port 2124 and is connected with the piston 23, and the other end of the push rod 24 penetrates through the outer sleeve 214.
The outer sleeve 214 is sleeved on the push rod 24 and is in threaded connection with the push rod 24. The outer sleeve 214 has an inner diameter that is greater than the outer diameter of the embedded cylinder 212 such that the embedded cylinder 212 can be inserted within the outer sleeve 214. The push rod 24 is rotated to drive the piston 23 to move along the embedded cylinder 212 so as to adjust the size of the medicine storage space, thereby realizing the adjustment of the injection quantity of each time of medicine liquid. Pushing the push rod 24 can drive the outer sleeve 214 and the piston 23 to move along the embedded cylinder 212, and can push the piston 23 to the first port 2121 of the embedded cylinder 212, so as to completely inject the medicine liquid in the medicine storage space into the animal body. In the present embodiment, the distance from the end of the outer sleeve 214 near the first port 212 to the drug inlet 216 is greater than the maximum distance from the piston 23 to the first port 212, so as to ensure that the piston 23 can be pushed by the push rod 24 to the first port 2121 of the embedded cylinder 212, thereby completely injecting the drug solution in the drug storage space into the animal. It will be appreciated that in other embodiments, a clearance hole may be provided in the outer sleeve 214 for clearance of the drug inlet 216 to prevent the drug inlet 216 from obstructing movement of the outer sleeve 214.
Specifically, in the present embodiment, the outer sleeve 214 includes an end plate 2141, a cylinder 2143 connected perpendicularly to the periphery of the end plate 2141, and a connecting member 2145 mounted in the cylinder 2143. The connecting member 2145 is substantially disc-shaped, and the connecting member 2145 is fixed on the inner wall of the cylinder 2143 and spaced apart from the end plate 2141, in this embodiment, the distance from the connecting member 2145 to the end of the cylinder 2143 away from the end plate 2141 is greater than the distance from the drug inlet 216 to the second port 214 of the inner sleeve 21, so that the connecting member 2145 prevents the outer sleeve 214 from moving relative to the inner sleeve 212. The push rod 24 sequentially penetrates through the end plate 2141 and the connecting piece 2145, and is in threaded connection with both the end plate 2141 and the connecting piece 2145. The arrangement of the link 2145 enables the movement of the push rod 24 to be more stable. A push rod knob 6 is also secured to the push rod 24, the push rod knob 6 being located outside the outer sleeve 214 to facilitate rotation of the push rod 24.
The injector spring 25 is disposed parallel to the outer sleeve 214, and opposite ends of the injector spring 25 are respectively connected to the outer sleeve 214 and the embedded cylinder 212 for resetting the outer sleeve 214 after injection is completed. In the present embodiment, the injector spring 25 is sleeved on the push rod 24, and opposite ends of the injector spring 25 are respectively connected to the connecting member 2145 and one end of the embedded cylinder 21 provided with the second port 214. When the injector spring 25 is in a natural state, one end of the cylinder 2143, which is far away from the end plate 2141, is sleeved on the embedded cylinder 212, so that the movement of the outer sleeve 214 is more stable.
In this embodiment, the injector further includes a buffer spring 9, the buffer spring 9 is disposed in the outer sleeve 214 and sleeved on the push rod 24, and opposite ends of the buffer spring 9 respectively abut against the connecting member 2145 and the end plate 2141.
When the injector 2 is used, firstly, according to the amount of liquid medicine required to be injected each time, the piston 23 is pushed to a preset position of the embedded cylinder 212 by rotating the push rod 24, and at the moment, the amount of liquid medicine in the medicine storage space is the amount of liquid medicine required to be injected each time, and is set to be L1; subsequently, pushing the push rod 24, the push rod 24 drives the outer sleeve 214 and the piston 23 to move together towards the needle 26, in the process, the injector spring 25 is compressed, so that the part of the embedded cylinder 212 inserted into the outer sleeve 214 is lengthened, the length of the injection cylinder 2 is shortened, and the medicine liquid in the medicine storage space can be completely injected into the animal body by pushing the piston 23 to the end of the embedded cylinder 212 (namely, the first port 2121 of the embedded cylinder 212). After the injection is completed, when the external force on the push rod 24 is withdrawn, the injector spring 25 can drive the outer sleeve 214 and the piston 23 to reset, and the medicine storage space is negative pressure, so that the medicine liquid in the medicine supply bottle 3 is filled into the medicine storage space again, and at the moment, the medicine liquid amount in the medicine storage space is the medicine liquid amount L1 required to be injected every time, which is set last time.
When the injector 2 is used for injection, for the injection operation with the same injection quantity in the same batch, the liquid medicine quantity required to be injected for each time is only required to be regulated before the first injection, the injection quantity is not required to be regulated during each injection, and the working efficiency can be improved. Meanwhile, as the liquid medicine amount injected each time is adjusted before injection, the push rod 24 does not need to be paid attention to the advancing distance during injection, and the use is more convenient; the piston 23 is driven to move by pushing instead of rotating the push rod 24 to perform injection, so that the injection time is shorter, the efficiency is higher, and the difficulty of injecting animals is reduced. Meanwhile, each injection can completely push the liquid medicine in the embedded cylinder 212 into the animal body, so that the waste of the liquid medicine is avoided.
Referring to fig. 1, 5 and 7, the animal intradermal injection aid 4 includes a housing 41, a syringe retaining bracket 42, a positioning block 43, a skin retaining clip 44, a movable handle 45 and a driving member 46. The syringe fixing base 42 is mounted on the housing 41 and can be forced to move along a first direction X parallel to the movement direction of the push rod 24. The syringe holder 42 is connected to the insert cylinder 212 of the syringe 2. The positioning block 43 is mounted on the housing 41, and a guide hole 431 (fig. 7) through which the needle 26 of the syringe 2 passes is formed in the positioning block 43 along the first direction X, and the guide hole 431 is used for guiding the needle insertion direction of the needle 26. The skin fixing clip 44 and the syringe fixing base 42 are respectively located at two opposite sides of the positioning block 43, and the skin fixing clip 44 includes an adjusting clip 441, a movable clip 443 and a position adjusting member 445. The adjusting clip 441 and the movable clip 443 are mounted on the housing 41 at intervals along a second direction Y perpendicular to the first direction X, and can slide with respect to the housing 41 under force. The adjusting clamping piece 441 and the movable clamping piece 443 enclose a clamping space 446 for placing animal skin. The position adjusting member 445 is mounted on the housing 41 and connected to the adjusting clip 441 to drive the adjusting clip 441 to move along the second direction Y, thereby adjusting the distance between the adjusting clip 441 and the guiding hole 431. The movable handle 45 is rotatably mounted on the housing 41 through a pivoting portion 451, and the movable handle 45 is provided with a pressing member 471, a first pushing member 472 and a second pushing member 473 at intervals, where the pressing member 471, the first pushing member 472 and the second pushing member 473 are all located on the same side of the pivoting portion 451 and gradually far away from the pivoting portion 451. In this embodiment, the pivot 451 is a mounting shaft mounted on the housing 41, the movable handle 45 is rotatably sleeved on the mounting shaft, and when the movable handle 45 rotates, the first pushing member 472 can push the syringe fixing base 42 to move toward the positioning block 43 for needle insertion, and the second pushing member 473 can push the push rod 24 of the syringe 2 for injection. The transmission member 46 is rotatably mounted on the housing 41, and opposite ends of the transmission member 46 can be respectively engaged with the pressing member 471 and the movable clamping piece 443, so as to drive the movable clamping piece 443 to move toward the adjusting clamping piece 441 when the movable handle 45 rotates, thereby clamping the animal skin.
Referring to fig. 6, the syringe fixing base 42 is mounted on the housing 41 and can move along a first direction X under force, specifically: the casing 41 is further provided with a guide rod 411 parallel to the second direction Y; the syringe fixing base 42 is provided with a guide hole 421 penetrating along the second direction Y, and the guide rod 411 slides through the guide hole 421 to guide the movement of the syringe fixing base 42. The animal intradermal injection aid 4 further comprises a resetting piece 48, the resetting piece 48 is sleeved on the guide rod 411, and two opposite ends of the resetting piece 48 are respectively abutted against the shell 41 and the syringe fixing seat 42. In this embodiment, the number of the restoring members 48 is two, and the two springs are sleeved on the guide rod 411 and respectively located at two opposite sides of the syringe fixing seat 42, and two opposite ends of each spring are respectively connected with the housing 41 and the syringe fixing seat 42.
The syringe fixing base 42 is connected with the embedded cylinder 212 of the syringe 2, specifically: referring to fig. 3, a connecting plate 2127 is further fixed on the embedded cylinder 212 of the syringe 2, and the connecting plate 2127 is connected with the syringe fixing base 42 through a screw 5, so that the connection between the syringe 2 and the syringe fixing base 42 is stable and convenient for subsequent disassembly. Referring to fig. 4, in the present embodiment, a clearance gap 2144 is provided at the bottom of the outer sleeve 214 for the syringe fixing seat 42 to pass through, so as to prevent the syringe fixing seat 42 from affecting the movement of the outer sleeve 214 during injection, and ensure that the piston 23 can be pushed to the first port 2121 of the inner cylinder 212 by the push rod 24. It will be appreciated that in other embodiments, when the injector spring 25 is in a natural state, the end of the outer sleeve 214 away from the end plate 2141 may be spaced from the insert cylinder 212 such that the distance between the end of the outer sleeve 214 away from the end plate 2141 and the injector fixing seat 42 is greater than the maximum distance between the piston 23 and the first port 2121, which may also serve the purpose of preventing the injector fixing seat 42 from affecting the movement of the outer sleeve 214 during injection. It will be appreciated that other means of connecting the syringe mount 42 to the in-line barrel 212 of the syringe 2 are possible.
Referring to fig. 6 again, in the present embodiment, a plurality of fixing base rails 412 are further installed on the housing 41, the plurality of fixing base rails 412 are arranged at intervals along the second direction Y, and each fixing base rail 412 is parallel to the first direction X; the injector fixing seat 42 is correspondingly provided with a fixing seat slideway 423 matched with the fixing seat slideway 412, one of the fixing seat slideway 412 and the fixing seat slideway 423 is a convex rail, and the other is a sliding groove which is in sliding connection with the convex rail. The movement of the syringe fixing base 42 is guided by the cooperation of the fixing base slideway 423 and the fixing base guide rail 412, so that the movement of the syringe fixing base 42 is more stable.
Referring to fig. 5 and fig. 7 again, in the present embodiment, the adjustment clip 441 is substantially square plate-shaped, and the adjustment clip 441 is connected to the housing 41 and can move along the second direction Y under force, specifically: the side of the adjusting clamping piece 441 facing the shell 41 is provided with a mounting guide rail 4411, the shell 41 is correspondingly provided with a mounting slide rail 414 matched with the mounting guide rail 4411, the mounting guide rail 4411 and the mounting slide rail 414 extend along the second direction Y, one of the mounting guide rail 4411 and the mounting slide rail 414 is a convex rail, the other is a sliding groove in sliding connection with the convex rail, and the adjusting clamping piece 441 is in sliding connection with the shell 41 through the sliding fit of the mounting guide rail 4411 and the mounting slide rail 414. Referring to fig. 10, the adjusting clip 441 is further provided with a bulge avoiding hole 4413 so as to facilitate bulge after injection.
In the present embodiment, the movable clip 443 includes a clip body 4431 and a trigger 4432 connected to one end of the clip body 4431. The clip body 4431 is substantially square and spaced apart from the adjusting clip 441, so as to jointly enclose the clamping space 446, and the clamping space 446 communicates the guide hole 431 with the outside. The clip body 4431 and the trigger portion 4432 are connected with the housing 41 and can move along the second direction Y under force, specifically: the side surfaces of the clamping piece body 4431 and the triggering part 4432 facing the shell 41 are respectively provided with an installing guide rail 4434, the shell 41 is correspondingly provided with an installing slide rail 416 matched with the installing guide rail 4434, the installing guide rail 4434 and the installing slide rail 416 extend along the second direction Y, one of the installing guide rail 4434 and the installing slide rail 416 is a convex rail, the other is a sliding groove connected with the convex rail in a sliding manner, and the clamping piece body 4431 and the triggering part 4432 are respectively connected with the shell 41 in a sliding manner through the sliding fit of the installing guide rail 4434 and the installing slide rail 416. Clip body 4431 is also connected to housing 41 by return spring 49, specifically: the return spring 49 is disposed along the second direction Y, one end of the return spring 49 is connected to the side of the clip body 4431 facing away from the adjustment clip 441, and one end of the return spring 49 is connected to the housing 41.
In the present embodiment, the side of the clip body 4431 facing the adjustment clip 441 and the side of the adjustment clip 441 facing the movable clip 443 are both provided with a flexible layer 447 to improve comfort. Preferably, the flexible layer 447 is a silicone layer.
Referring again to fig. 7, in the present embodiment, the position adjusting member 445 includes an adjusting screw 4451 and an elastic member 4453. The adjusting screw 4451 is parallel to the second direction Y, the adjusting screw 4451 is in threaded connection with the housing 41, and one end of the adjusting screw 4451 can abut against the side surface of the adjusting clamping piece 441 facing away from the movable clamping piece 443. The elastic piece 4453 is sleeved outside the adjusting screw 4451, and opposite ends of the elastic piece 4453 are respectively connected with the housing 41 and the adjusting clip 441. In this embodiment, the elastic member 4453 is preferably a spring. When the adjusting screw 4451 rotates, the adjusting screw 4451 can move towards the adjusting clamping piece 441, so as to push the adjusting clamping piece 441 to move towards the movable clamping piece 443 along the second direction Y, and at the moment, the elastic piece 4453 is compressed; the adjusting screw 4451 can also move the adjusting screw 4451 away from the adjusting clip 441 when rotating, and at this time, the adjusting clip 441 moves away from the movable clip 443 to return under the elastic restoring force of the elastic member 4453. Therefore, the adjusting screw 4451 can drive the adjusting clip 441 to move along the second direction Y, so as to adjust the vertical distance between the bottom surface of the adjusting clip 441 and the guiding hole 431.
Referring to fig. 7 to 9, in the present embodiment, a scale 418 is further disposed on the housing 41. The scale 418 is fixedly connected to the housing 41 and is disposed adjacent the adjustment screw 4451. The adjusting screw 4451 is provided with an indicating needle 4454 which is used for pointing to scales on the graduated scale 418, specifically: the adjusting screw 4451 is provided with a limiting groove 4455 along the circumferential direction, and the indicating needle 4454 comprises a sleeve 4456 and an indicating rod 4457 connected with the sleeve 4456. The sleeve 4456 is sleeved on the adjusting screw 4451 and is accommodated in the limiting groove 4455. The indicator needle 4454 is prevented from moving in the axial direction of the adjustment screw 4451 by the limiting groove 4455. At the same time, the sleeve 4456 is forced to rotate relative to the adjustment screw 4451 to adjust the orientation of the indicator lever 4457 such that the indicator lever 4457 is able to point to the scale on the scale 418. When the elastic member 4453 of the position adjusting member 445 is in a natural state, the adjusting clip 441 is positioned at the initial position, and the distance between the bottom surface of the adjusting clip 441 and the guide hole 431 is maximum, assuming 5mm, at which time the scale on the scale 418 to which the indicating needle 4454 on the adjusting screw 4451 is directed is 5mm. When the adjusting jaw 441 moves along with the adjusting screw 4451 toward the movable jaw 443, the indicating needle 4454 is driven to move along the scale 418, such that the scale value indicated by the indicating needle 4454 is the distance between the adjusting jaw 441 and the guiding hole 431.
Referring to fig. 1 again, in the present embodiment, the movable handle 45 has a substantially rod shape. The pressing member 471 is substantially rod-shaped, the first pushing member 472 is substantially convex, the second pushing member 473 is substantially elongated, and the pressing member 471, the first pushing member 472 and the second pushing member 473 are integrally formed with the movable handle 45. In the present embodiment, in the initial state, the pressing member 471, the first pushing member 472 and the second pushing member 473 are gradually away from the skin fixing clip 44, and the pressing member 471 contacts with one end of the driving member 46 away from the triggering portion 4432, the first pushing member 472 is close to the syringe fixing base 42 and is spaced apart from the syringe fixing base 42 by a first predetermined distance, the first pushing member 472 and the pressing member 471 are respectively located at two opposite sides of the syringe fixing base 42, and the second pushing member 473 is close to the free end of the push rod 24 of the syringe 2 and is spaced apart from the syringe fixing base 42 by a second predetermined distance, so that when the movable handle 45 rotates, the driving member 46, the syringe fixing base 42 and the push rod 24 are sequentially triggered by the pressing member 471, the first pushing member 472 and the second pushing member 473. The first preset distance and the second preset distance can be set according to actual needs.
Referring to fig. 5 again, in the present embodiment, the transmission member 46 is substantially elongated and is connected to the housing 41 through a connecting shaft 461. In the present embodiment, one end of the transmission member 46 is disposed near the trigger portion 4432 of the movable clip 443, and the other end is in contact with the pressing member 471. The connecting shaft 461 is further provided with a torsion spring 463, and two ends of the torsion spring 463 are respectively connected with the housing 41 and the transmission member 46, so that the transmission member 46 is reset. The construction and installation of the torsion spring 463 is well known in the art and will not be described in detail herein for the sake of brevity.
The use of the intradermal injection device 100 includes the steps of:
firstly, the injector 2 is arranged on the injector fixing seat 42, the sterilized needle 26 is arranged on the embedded cylinder 212 and is inserted into the guide hole 431 of the positioning block 43; the desired injection volume is adjusted by push rod knob 26; a medicine supply bottle 3 is arranged on the medicine inlet 2126; pulling the movable handle 45 in the anticlockwise direction in the view of fig. 1, in this process, the pressing member 471 presses down one end of the driving member 46, so that the driving member 46 rotates, and further one end of the driving member 46 away from the pressing member 471 is tilted, so as to drive the movable clamping piece 443 to move towards the adjusting clamping piece 441, and store energy of the torsion spring 463 and the return spring 49; the movable handle 45 continues to rotate, and then the first pushing piece 472 pushes the syringe fixing seat 42 to move towards the positioning block 43, and the resetting piece 48 stores energy; the movable handle 45 continues to rotate, so that the second pushing member 473 abuts against the push rod 24, and the push rod 24 of the injector 2 is pushed to move towards the skin fixing clamp 44, so as to drive the piston 23 to move towards the needle 26 to the first port 2121 of the embedded cylinder 212, so as to discharge air in the embedded cylinder 212, and store energy for the injection spring to enable the piston 23; releasing the movable handle 45, and resetting the transmission piece 46 by the torsion spring 463 so as to drive the movable handle 45 to reset; the reset piece 48 resets the syringe fixing base 42, the injection spring resets the piston 23, the reset spring 49 resets the movable clamping piece 443, at this time, the inside of the embedded cylinder 212 is negative pressure, so that the medicine liquid in the medicine supply bottle 3 enters the medicine storage space enclosed by the embedded cylinder 212 and the piston 23.
Secondly, scraping hairs of the areas needing injection of animals such as cattle and the like, and sterilizing; the adjusting screw 4451 is adjusted to push the adjusting clamping piece 441 to move towards the movable clamping piece 443, so that the distance between the bottom surface of the adjusting clamping piece 441 and the guide hole 431 is about 1/4 of the thickness of the double-layer skin of the animal: taking the intradermal injection of cattle as an example, a layer of cattle skin is typically about 4 to 5mm thick, with a double layer of cattle skin being about 8-10mm thick. The adjusting screw 4451 is rotated to push the adjusting clamping piece 441 to move towards the movable clamping piece 443, so that the distance between the bottom surface of the adjusting clamping piece 441 and the guide hole 431 is about 1/4 of the thickness of the cowhide double-layer skin, namely about 2-2.5 mm.
Referring also to fig. 11, the pinched cowhide 200 is then lifted about 1cm in height by one hand, the pinched cowhide 200 being a double layer cowhide thickness; pushing the edge of the double-layer cowhide 200 into the clamping space 446 of the skin fixing clamp 44, holding the movable handle 45 tightly, and rapidly holding the movable handle to the bottom in the anticlockwise direction, in the process, the movable handle 45 rotates in the anticlockwise direction, so that the pressing piece 471 presses one end of the transmission piece 46 downwards to drive the transmission piece 46 to rotate, and further one end of the transmission piece 46 far away from the pressing piece 471 is tilted to drive the movable clamping piece 443 to move towards the adjusting clamping piece 441, thereby realizing the clamping of animal skin, and storing energy for the torsion spring 463; the movable handle 45 continues to rotate, and then the first pushing piece 472 pushes the syringe fixing seat 42 to move towards the positioning block 43 so as to perform needle insertion; the movable handle 45 continues to rotate, so that the second pushing member 473 abuts against the push rod 24 and pushes the push rod 24 of the injector 2 to move towards the positioning block 43 along the first direction X, the push rod 24 pushes the piston 23 to completely inject the liquid medicine in the medicine storage space into the animal body for injection, continuous operation of skin clamping and fixing, needle insertion and injection operation is realized, and the working efficiency is further improved. Meanwhile, as the distance between the adjusting clamping piece 441 and the guide hole 431 is adjusted by adopting the position adjusting piece 445, the cowhide is fixed by the skin fixing clamp 44, and the needle inserting direction is positioned by utilizing the positioning block 43, the problems that the needle 26 is difficult to position in the struggling process of animals, and the needle 26 is punctured along the middle weak position of the double-layer cowhide 200 to cause the puncture of the cowhide 200 and the injection failure can be effectively solved.
After the injection is completed, the movable handle 45 is loosened, the resetting piece 48 enables the syringe fixing seat 42 to reset, and the needle 26 automatically withdraws from the cow leather 200; the torsion spring 463 enables the transmission piece 46 to reset, and the movable handle 45 resets under the action of the transmission piece 46; the movable clamping piece 443 moves away from the adjusting clamping piece 441 to reset under the action of the reset spring 49, so that the skin fixing clamp 44 releases the cow leather 200; the injector spring 25 drives the outer sleeve 214 and the piston 23 to return. Detecting whether an intradermal bulge has occurred in the epidermis of the cow hide 200, and if so, indicates that the injection was successful.
Needle 26 is replaced before the next injection of the animal is made and the procedure is followed as described above. The needle 26 can be replaced by the following steps: first, the syringe holder 42 is moved rightward in the first direction X in the view of fig. 1 such that the syringe holder 42 is separated from the needle 26 by a distance to facilitate removal of the needle 26, in which process the restoring member 48 located on the left side of the syringe holder 42 is stretched and the restoring member 48 located on the right side of the syringe holder 42 is compressed; subsequently, the needle 26 is rotated, so that after the needle 26 is separated from the embedded cylinder 212, the used needle 26 is taken out, and the sterilized needle 26 and the embedded cylinder 212 are screwed; finally, the syringe holder 42 is slowly released, and the reset member 48 resets the syringe holder 42 along the first direction X, during which the syringe holder 42 pushes the pressing member 471, so that the movable handle 45 is reset.
It will be appreciated that a torsion spring may also be sleeved on the pivot portion 451 of the movable handle 45 to assist in resetting the movable handle 45.
It will be appreciated that the animal intradermal injection device 100 may also be used for intradermal injection of other animals.
It will be appreciated that in other embodiments, the syringe holder 42 may be omitted, and in use, the skin fixing clip 44 is used to fix the cowhide 200, and then the syringe is held by hand, and the needle of another syringe is inserted through the guide hole 431 of the positioning block 43 for manual injection. At this time, the first push member 472 and the second push member 473 may be omitted.
The foregoing description is directed to the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the invention, and all equivalent changes or modifications made under the technical spirit of the present invention should be construed to fall within the scope of the present invention.
Claims (4)
1. An animal intradermal injection device, includes the syringe, the syringe include the syringe, install in the syringe in the piston and with piston coupling's push rod, its characterized in that, animal intradermal injection device still includes animal intradermal injection assistor, animal intradermal injection assistor includes:
a housing;
the syringe fixing seat is arranged on the shell, can move along a first direction under force, is parallel to the movement direction of the push rod, and is arranged on the syringe fixing seat;
the positioning block is arranged on the shell, and a guide hole for a needle head of the syringe to pass through is formed in the positioning block in a penetrating manner along the first direction;
the skin fixing clamp and the injector fixing seat are respectively positioned on two opposite sides of the positioning block, the skin fixing clamp comprises an adjusting clamping piece, a movable clamping piece and a position adjusting piece, the adjusting clamping piece and the movable clamping piece are arranged on the shell at intervals along a second direction perpendicular to the first direction and can bear force to slide relative to the shell, a clamping space for placing animal skin is formed between the adjusting clamping piece and the movable clamping piece, and the position adjusting piece is arranged on the shell and is connected with the adjusting clamping piece so as to drive the adjusting clamping piece to move along the second direction and further adjust the distance between the adjusting clamping piece and the guide hole;
the movable handle is rotatably arranged on the shell through a pivoting part, a pressing piece, a first pushing piece and a second pushing piece are arranged on the movable handle at intervals, the pressing piece, the first pushing piece and the second pushing piece are all positioned on the same side of the pivoting part and gradually far away from the pivoting part, and when the movable handle rotates, the first pushing piece can push the syringe fixing seat to move towards the positioning block to perform needle insertion, and the second pushing piece can push the push rod of the syringe to perform injection; and
The transmission piece is rotatably arranged on the shell, and the opposite ends of the transmission piece can be respectively matched with the pressing piece and the movable clamping piece so as to drive the movable clamping piece to move towards the adjusting clamping piece when the movable handle rotates, so that the animal skin is clamped;
the guide rod parallel to the first direction is arranged on the shell, a guide hole is formed in the injector fixing seat in a penetrating mode along the first direction, and the guide rod penetrates through the guide hole in a sliding mode; the animal intradermal injection auxiliary device also comprises a resetting piece, wherein the resetting piece is sleeved on the guide rod, and the opposite ends of the resetting piece are respectively connected with the shell and the syringe fixing seat;
the transmission piece is connected with the shell through a connecting shaft, a torsion spring is sleeved on the connecting shaft, and two tail ends of the torsion spring are respectively connected with the shell and the transmission piece;
the movable clamping piece is also connected with the shell through a return spring;
the position adjusting piece comprises an adjusting screw and an elastic piece, the adjusting screw is parallel to the second direction, the adjusting screw is in threaded connection with the shell, and one end of the adjusting screw can prop against the side surface, opposite to the movable clamping piece, of the adjusting clamping piece; the elastic piece is sleeved outside the adjusting screw, and two opposite ends of the elastic piece are respectively connected with the shell and the adjusting clamping piece.
2. An animal intradermal injection device as in claim 1, wherein: the injection tube comprises an embedded tube and an outer sleeve which are coaxially arranged, wherein a first port and a second port which are communicated with the inner cavity of the embedded tube are respectively arranged at the opposite ends of the embedded tube, and the first port is used for installing a needle; the piston is slidably arranged in the embedded cylinder and is in sealing contact with the inner peripheral wall of the embedded cylinder; the push rod is parallel to the injection cylinder, one end of the push rod enters the embedded cylinder through the second port to be connected with the piston, and the other end of the push rod penetrates through the outer sleeve; the push rod is also in threaded connection with the outer sleeve; the inner diameter of the outer sleeve is larger than the inner diameter of the embedded cylinder; the embedded cylinder is arranged on the syringe fixing seat; the injector also comprises an injector spring, wherein the injector spring is arranged in parallel with the outer sleeve, and the opposite ends of the injector spring are respectively connected with the outer sleeve and the embedded cylinder; the piston can be driven to move to the first port of the embedded cylinder along the embedded cylinder by pushing the push rod.
3. An animal intradermal injection device as in claim 2, wherein: the peripheral wall of the embedded cylinder is also communicated with a medicine inlet, the medicine inlet is arranged close to the first port, the medicine inlet is communicated with the inner cavity of the embedded cylinder, and a one-way valve is arranged at the medicine inlet; the distance from one end of the outer sleeve, which is close to the first port, to the medicine inlet is larger than the maximum distance from the piston to the first port.
4. An animal intradermal injection device as in claim 1, wherein: the adjusting clamping piece is provided with a bulge avoiding hole in a penetrating way.
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| CN201910473475.5A CN110051453B (en) | 2019-05-31 | 2019-05-31 | Intradermal injection device for animals and injection aid therefor |
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| CN201910473475.5A CN110051453B (en) | 2019-05-31 | 2019-05-31 | Intradermal injection device for animals and injection aid therefor |
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| CN110051453B true CN110051453B (en) | 2024-04-16 |
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| CN106267469A (en) * | 2016-08-05 | 2017-01-04 | 天津市灥嘉科技发展有限公司 | A kind of animal epidemic prevention device |
| CN106618788A (en) * | 2017-01-19 | 2017-05-10 | 成都市宏德永兴养殖有限公司 | Automatic fed livestock and poultry injection device |
| CN207627685U (en) * | 2017-06-05 | 2018-07-20 | 丁平 | Fine-tuning Automatic-backing type helps note rifle |
| CN108836561A (en) * | 2018-05-12 | 2018-11-20 | 南京正亮医药科技有限公司 | A kind of skin disease ejection preparation for animals |
| CN210330819U (en) * | 2019-05-31 | 2020-04-17 | 广西壮族自治区畜牧研究所 | Animal intracutaneous injection device and injection aid thereof |
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| CN110051453A (en) | 2019-07-26 |
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