CN114904090B - Injector with safety structure - Google Patents

Injector with safety structure Download PDF

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Publication number
CN114904090B
CN114904090B CN202210599694.XA CN202210599694A CN114904090B CN 114904090 B CN114904090 B CN 114904090B CN 202210599694 A CN202210599694 A CN 202210599694A CN 114904090 B CN114904090 B CN 114904090B
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CN
China
Prior art keywords
pipe
needle
push rod
positioning
liquid containing
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Application number
CN202210599694.XA
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Chinese (zh)
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CN114904090A (en
Inventor
张逢顿
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Hangzhou Pangxingxing Technology Co ltd
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Hangzhou Pangxingxing Technology Co ltd
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Priority to CN202210599694.XA priority Critical patent/CN114904090B/en
Publication of CN114904090A publication Critical patent/CN114904090A/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/42Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for desensitising skin, for protruding skin to facilitate piercing, or for locating point where body is to be pierced
    • A61M5/427Locating point where body is to be pierced, e.g. vein location means using ultrasonic waves, injection site templates
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/46Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for controlling depth of insertion

Abstract

The invention discloses an injector with a safety structure, which is provided with a liquid containing tube, a needle head, a push rod and a rubber plug arranged at the end part of the push rod. The end part of the needle head pipe is detachably provided with a positioning pipe, and a progressive structure is arranged on the push rod. A fitting pipe which is communicated with the needle head pipe and the liquid containing pipe and can be fastened and penetrated in the positioning pipe is also arranged between the needle head pipe and the liquid containing pipe. This syringe with insurance structure through setting up the locating tube, can carry out the location auxiliary action to the part that leaks outside the epidermis outward to make the stable interpolation epidermis of syringe needle in, avoid the skew of syringe needle in the injection process to appear breaking away from the problem of epidermis even, overcome the skew and the rocking influence that the human factor caused, improve accurate injection effect. The push rod can achieve a relatively uniform pushing effect through the progressive structure, the unstable injection problem that the injection is too fast and too slow due to the influence of human factors is avoided, the injection quality is improved, and the injection pain caused to a patient is reduced.

Description

Injector with safety structure
Technical Field
The invention relates to the technical field of syringe use, in particular to a syringe with a safety structure.
Background
The syringe is a medical appliance, and is mainly used for extracting or injecting gas or liquid through a needle, and is generally used for injecting liquid medicine. When the medical liquid injection device is used, the needle is fixedly sleeved on the needle tube, the needle is stretched into an injection medicine, the push rod is lifted up, the medical liquid is sucked into the liquid containing tube under the action of contact sealing between the rubber plug and the inner wall of the liquid containing tube, and after the needle is inserted into the epidermis of a patient through external force, the medical liquid in the liquid containing tube is injected into the patient through pushing the push rod.
At present, in the conventional injection operation, the depth of the needle inserted into the epidermis of a patient is shallower, so that most of the needle leaks outside the epidermis of the patient, when the push rod is pushed and liquid medicine is injected, as most of the needle, the needle tube, the liquid containing tube and the push rod are all positioned outside the epidermis, the diameter of the needle is smaller, and the influence of shaking is considered to be larger when the needle is injected by one hand, so that the needle leaks outside the epidermis and the needle tube, the liquid containing tube and the push rod are inclined compared with the epidermis under the connection effect of the needle and the epidermis, the injection accuracy is influenced, and the problem that the whole syringe is separated from the epidermis of the patient is solved, and the pain of treatment is caused to the patient.
Moreover, at present, the injection is carried out by adopting single-hand operation and pushing the push rod to move towards the direction at the bottom of the liquid containing tube, so that the liquid medicine is injected into a patient, in the operation process, the push speed of the push rod is unbalanced due to the influence of human factors, so that the flow speed of the liquid medicine continuously injected into the patient is changed, and for certain liquid medicine which needs to be injected slowly, the injection flow speed after the rapid speed is suddenly increased does not meet the injection requirement, a certain uncomfortable feeling is caused for the patient, the illness state is seriously increased, and the absorption effect of the liquid medicine is influenced.
Disclosure of Invention
Aiming at the problems, the invention aims to provide the injector with the safety structure, which can realize the functions of spacing and auxiliary positioning of the injector needle, overcome the deflection and shaking influence caused by human factors, improve the accurate injection effect, realize the relatively uniform pushing effect through the progressive structure arranged on the push rod, avoid the unstable injection problem of too fast and too slow injection caused by the human factor influence, improve the injection quality and reduce the injection pain caused to patients.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides an injector with insurance structure, the syringe has flourishing liquid pipe, flourishing liquid pipe one end extends has the syringe needle pipe that link up rather than inside the detachable cover is equipped with the syringe needle on the syringe needle pipe, move in flourishing liquid pipe and wear to be equipped with the push rod to the tip of push rod is equipped with rubber buffer, its characterized in that: the needle head tube end part is detachably provided with a positioning tube, and the push rod is provided with a progressive structure.
Preferably, a fitting pipe which is communicated with the needle pipe and can be fastened and penetrated in the positioning pipe is further arranged between the needle pipe and the liquid containing pipe, wedge-shaped rubber blocks which are tightly contacted with the inner wall of the positioning pipe are embedded in the middle of the fitting pipe along the circumferential interval, and rubber rings which are tightly contacted with the end parts of the inner wall of the positioning pipe are embedded in the outer wall of the positioning pipe, which is close to the liquid containing pipe.
Preferably, the progressive structure is a progressive thread provided on the push rod, and the push rod is threaded through the progressive thread and is threaded at the end part of the liquid containing tube.
Preferably, the outer end part of the push rod is vertically provided with a push block, and the outer end part of the liquid containing pipe is provided with a buffer spring contacted with the push block.
Preferably, a rubber positioning plug is embedded at the end part of the positioning tube, and a positioning hole which corresponds to the needle tube and is tightly penetrated with the needle is formed in the middle of the rubber positioning plug.
Preferably, a rotary push plate is further rotatably arranged at the outer end of the push block, and the outer diameter of the rotary push plate is larger than that of the push block.
The beneficial effects of the invention are as follows: this syringe with insurance structure through setting up the locating tube, can fix a position the auxiliary effect to the part that the syringe needle leaks outside the epidermis to in making the stable epidermis of inserting of syringe needle, avoid the skew of syringe needle in the injection process to appear breaking away from the problem of epidermis even, also realize certain stabilization to liquid containing tube and the push rod under the state of rocking simultaneously, and overcome the skew and the rocking influence that the human factor caused, improve accurate injection effect.
Through the progressive structure arranged on the push rod of the injector, the push rod can realize a relatively uniform pushing effect under the action of external force, so that the unstable injection problem caused by too fast and too slow injection due to the influence of human factors is avoided, the injection quality is improved, and the injection pain caused to a patient is reduced.
Drawings
Fig. 1 is a schematic perspective view of a syringe according to the present invention.
Fig. 2 is a schematic view of the push rod structure of the present invention.
FIG. 3 is a side view of the positioning tube of the present invention.
FIG. 4 is a schematic view of the syringe according to the present invention (uncapped positioning tube).
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Referring to the syringe with a safety structure shown in fig. 1-4, the syringe is provided with a liquid containing tube 1, one end of the liquid containing tube 1 is extended with a needle tube 11 communicated with the inside of the liquid containing tube, the needle tube 11 is detachably sleeved with a needle 2, a push rod 3 is arranged in the liquid containing tube 1 in a moving way, and the end part of the push rod 3 is provided with a rubber plug 31. When the syringe is used, the needle head 2 is fixedly sleeved on the needle head pipe 11, the needle head 2 stretches into an injection medicine, the push rod 3 is lifted up, the medicine liquid is sucked into the liquid containing pipe under the contact sealing effect of the rubber plug 31 and the inner wall of the liquid containing pipe, and after the needle head 2 is inserted into the epidermis of a patient through external force, the medicine liquid in the liquid containing pipe 1 is injected into the patient through pushing the push rod 3.
In order to improve the injection mode of syringe and the problem that the human factor influences accurate injection when injecting at present needle pipe 11 tip detachable is provided with registration arm 4, can leak outside the epidermis to needle 2 through this registration arm 4 part and carry out the location auxiliary action to in making the stable epidermis of inserting of needle 2, avoid the skew of needle 2 to appear breaking away from the problem of epidermis even in the injection process, also realize certain stabilization effect to holding liquid pipe 1 and push rod 3 under the state of rocking simultaneously, and overcome the skew and the rocking influence that the human factor caused, improve accurate injection effect.
In order to achieve the purpose of relatively uniform injection, as shown in fig. 1, a gradual progressive structure is arranged on the push rod 3, through the structure, the push rod 3 can achieve relatively uniform pushing action under the action of external force, the problem of unstable injection caused by the influence of human factors on the injection speed and the injection speed is avoided, the injection quality is improved, and the pain caused to the patient in injection is reduced.
As shown in fig. 4, a fitting pipe 12 penetrating through the needle pipe 11 and the liquid containing pipe 1 and capable of being fastened in the positioning pipe 4 is further provided between the needle pipe 11 and the liquid containing pipe 1, wedge-shaped rubber blocks 121 closely contacting the inner wall of the positioning pipe 4 are embedded in the middle of the fitting pipe 12 along the circumferential interval, and rubber rings 122 closely contacting the end of the inner wall of the positioning pipe 4 are embedded in the outer wall of the positioning pipe 4 close to the liquid containing pipe 1. The positioning tube 4 is sleeved on the assembly tube 12 and is in close contact with the wedge-shaped rubber block 121 and the rubber ring 122, so that the positioning tube 4 can be detachably assembled and assembled tightly. Firstly, the needle head 2 is sleeved on the needle head pipe 11, then the positioning pipe 4 is sleeved on the assembling pipe 12, so that the needle head 2 penetrates out of the positioning pipe 4, and the preferred penetrating length is equal to the depth of the inserted epidermis, and further after the needle head 2 is inserted into the epidermis by a certain depth, the outer end part of the positioning pipe 4 is contacted with the epidermis, so that the spacing effect on the needle head 2 can be realized, and the problems of over-deep or over-shallow insertion of the needle head 2, deflection during injection and falling caused by the needle head 2 are avoided.
As shown in fig. 1-2 and 4, the progressive structure is a progressive thread 32 provided on the push rod 3, and the push rod 3 is threaded through the end of the liquid containing tube 1 by the progressive thread 32. After the needle 2 is inserted into the epidermis and positioned in contact with the epidermis through the positioning tube 4, the push rod 3 is rotated, and the rubber stopper 31 at the end is pushed to move in the direction of the needle 2 in the liquid containing tube 1 in a stepwise progressive manner under the action of the progressive screw 32, and the medical fluid is injected into the patient through the needle 2. By the rotating progressive action of the progressive thread 32, the injection problem that the push rod 3 moves too fast or too slowly in the current direct push injection operation can be effectively avoided, so that the liquid medicine can be injected into a patient at a relatively uniform flow rate, and particularly, the injection device has a better auxiliary injection effect on the liquid medicine which needs to be slowly injected.
As shown in fig. 1-2 and 4, the outer end of the push rod 3 is vertically provided with a push block 33, and the outer end of the liquid containing tube 1 is provided with a buffer spring 5 contacted with the push block 33. In the progressive injection process of the rotary push rod 3, when the liquid medicine block is injected, the push block 33 is contacted with the buffer spring 5, so that the rotation resistance of the push block 33 is increased, the injection rate is gradually slowed down, and the defect that residual air in the liquid containing tube 1 is injected into a patient after the rubber plug 31 at the end part of the push rod 3 is extruded with the inner bottom end of the liquid containing tube 1 is avoided. Thus, this mode of operation can solve the problem of waste caused by the fact that part of the chemical liquid is squeezed out in order to expel air in the liquid containing tube 1 when the chemical liquid is sucked into the liquid containing tube 1 through the needle 2.
In order to improve the positioning effect of the positioning tube 4 on the needle 2, as shown in fig. 3, a rubber positioning plug 41 is embedded at the end of the positioning tube 4, and a positioning hole 410 corresponding to the needle tube 11 and passing through the needle 2 in a tight fit manner is formed in the middle of the rubber positioning plug 41. In the process of sleeving the positioning tube 4, the needle head 2 passes through the positioning hole 410, so that the rubber positioning plug 41 is in close contact with the outer peripheral surface of the needle head 2, and the positioning effect of the positioning tube 4 on the needle head 2 is further improved.
Preferably, a baffle plate 42 for leaking or covering the positioning hole 410 is further rotatably disposed on the outer end surface of the positioning tube 4, and when the needle 2 is not installed, the positioning hole 410 can be plugged by rotating the baffle plate, so as to avoid pollution and blockage of the positioning hole 410 and the needle tube 11 caused by external environment. The outer wall of the positioning tube is also provided with a wearing splint 43, preferably made of glass, which can be used repeatedly by disinfection, so that the wearing operation of the syringe can be realized by wearing the splint, the convenience of use is improved, and the needle 2 is replaced every time it is injected.
Since the rotation of the push block 33 requires a plurality of hand-changing operations to push the push rod 3 for injection due to the limitation of the rotation stroke of the palm during the manual injection operation, and the intermittent stop of the injection during the hand-changing process has a certain influence on the continuity of the injection of the liquid medicine, and the back suction of the blood in the patient into the needle 2 is caused during the intermittent stop process, in order to solve the intermittent injection problem, as shown in fig. 1-2, a rotation push plate 34 is further rotatably arranged at the outer end of the push block 33, and the outer diameter of the rotation push plate 34 is larger than the outer diameter of the push block 33. By applying extrusion external force to the rotary push plate 34, the push rod 3 is in a threaded fit structure of the progressive threads 32 and the port of the liquid containing tube 1, and the push rod 3 is driven to rotate in a threaded manner and move at a uniform speed towards the inner bottom end of the liquid containing tube 1, so that continuous injection of liquid medicine is realized, the problem of intermittent injection stopping existing in the process of manually rotating the push rod 3 is solved, and continuous and relatively uniform injection operation is realized as a whole.
The principle of the invention is as follows: because the syringe is preferably made of glass, the syringe can be reused after disinfection, before use, the disposable needle head 2 is sleeved on the needle head tube 11, then the positioning tube 4 is sleeved on the assembling tube 12, and the inner wall of the positioning tube 4 is tightly contacted with the wedge-shaped rubber block 121 and the rubber ring 122 by external force, so that the assembling and fastening of the positioning tube 4 are realized, the needle head 2 penetrates out of the positioning hole 410 formed in the middle of the rubber positioning plug 41 at the end part of the positioning tube 4, and the preferable penetrating length is equal to the depth of the inserted epidermis;
then the rotary push plate 34 is pulled outwards, so that the push rod 3 drives the rubber plug 31 at the end part of the push rod to move, and the liquid medicine to be injected is sucked into the liquid containing tube 1 through the needle head 2;
then, after the needle head 2 is inserted into the epidermis to a certain depth, the outer end part of the positioning tube 4 is contacted with the epidermis, so that the distance limiting effect on the needle head 2 can be realized, and the problems of over-deep or over-shallow insertion of the needle head 2, deflection during injection and falling caused by the deflection are avoided.
Then, by applying extrusion external force to the rotary push plate 34, the push rod 3 is in a threaded fit structure of the progressive threads 32 and the port of the liquid containing tube 1, and the push rod 3 is driven to rotate in a threaded manner and move at a uniform speed towards the inner bottom end of the liquid containing tube 1, so that continuous injection of liquid medicine is realized, the problem of intermittent injection stop in the process of manually rotating the push rod 3 is solved, and continuous and relatively uniform injection operation is realized as a whole. In the progressive injection process of the rotary push rod 3, when the liquid medicine block is injected, the push block 33 is contacted with the buffer spring 5, so that the rotation resistance of the push block 33 is increased, the injection rate is gradually slowed down, and the defect that residual air in the liquid containing tube 1 is injected into a patient after the rubber plug 31 at the end part of the push rod 3 is extruded with the inner bottom end of the liquid containing tube 1 is avoided. Thus, this mode of operation can solve the problem of waste caused by the fact that part of the chemical liquid is squeezed out in order to expel air in the liquid containing tube 1 when the chemical liquid is sucked into the liquid containing tube 1 through the needle 2.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely 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 is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. The utility model provides an injector with insurance structure, the syringe has flourishing liquid pipe (1), flourishing liquid pipe (1) one end extends has syringe needle pipe (11) that link up rather than inside syringe needle pipe (11) last detachable cover is equipped with syringe needle (2), flourishing liquid pipe (1) remove and wear to be equipped with push rod (3), and the tip of push rod (3) is equipped with rubber buffer (31), its characterized in that: a positioning tube (4) is detachably arranged at the end part of the needle head tube (11), and a progressive structure is arranged on the push rod (3);
a fitting pipe (12) which is communicated with the needle pipe (11) and the liquid containing pipe (1) and can be fastened and penetrated in the positioning pipe (4) is further arranged between the needle pipe (11) and the liquid containing pipe (1), wedge-shaped rubber blocks (121) which are tightly contacted with the inner wall of the positioning pipe (4) are embedded in the middle of the fitting pipe (12) along the circumferential interval, and a rubber ring (122) tightly contacted with the end part of the inner wall of the positioning pipe (4) is embedded in the outer wall of the positioning pipe (4) close to the liquid containing pipe (1);
the progressive structure is a progressive thread (32) arranged on the push rod (3), and the push rod (3) is threaded at the end part of the liquid containing pipe (1) through the progressive thread (32);
the outer end part of the push rod (3) is vertically provided with a push block (33), and the outer end part of the liquid containing pipe (1) is provided with a buffer spring (5) which can be contacted with the push block (33) when the push block (33) is close to the push block;
the outer end of the push block (33) is also rotatably provided with a rotary push plate (34), the push rod (3) axially rotates and advances in comparison with the liquid containing tube (1) under the state of pressing the rotary push plate (34), the push plate (34) and the push block (33) rotate relatively, and the outer diameter of the rotary push plate (34) is larger than the outer diameter of the push block (33).
2. A syringe having a safety feature as claimed in claim 1, wherein: the end part of the positioning tube (4) is embedded with a rubber positioning plug (41), and a positioning hole (410) which corresponds to the needle tube (11) and is tightly clung to the needle (2) is formed in the middle of the rubber positioning plug (41).
CN202210599694.XA 2022-05-30 2022-05-30 Injector with safety structure Active CN114904090B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210599694.XA CN114904090B (en) 2022-05-30 2022-05-30 Injector with safety structure

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Application Number Priority Date Filing Date Title
CN202210599694.XA CN114904090B (en) 2022-05-30 2022-05-30 Injector with safety structure

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CN114904090A CN114904090A (en) 2022-08-16
CN114904090B true CN114904090B (en) 2024-03-12

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104707220A (en) * 2013-12-17 2015-06-17 天津市天堰医教科技开发有限公司 Positioning injector
CN108992716A (en) * 2018-06-14 2018-12-14 褥玲燕 New-type sting device
CN211705503U (en) * 2019-12-23 2020-10-20 中国人民解放军总医院第八医学中心 Injection needle for endocrinology department
CN211863493U (en) * 2019-12-18 2020-11-06 付默 Syringe is used in division of endocrinology's nursing
CN213030915U (en) * 2020-03-26 2021-04-23 天津市好曰子动物药业有限公司 Animal remedy syringe for pet
CN215651765U (en) * 2021-09-06 2022-01-28 王剑飞 Blood vessel injection device for animal medical science experiments
CN216456368U (en) * 2021-11-17 2022-05-10 北京瑷格干细胞科技有限公司 Injection device with adjustable depth
CN216496857U (en) * 2021-10-08 2022-05-13 洪湖泰宁医疗器械有限公司 Medicine syringe of accurate dose control

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9937299B2 (en) * 2013-09-26 2018-04-10 Becton, Dickinson And Company Adjustable penetration depth syringe

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104707220A (en) * 2013-12-17 2015-06-17 天津市天堰医教科技开发有限公司 Positioning injector
CN108992716A (en) * 2018-06-14 2018-12-14 褥玲燕 New-type sting device
CN211863493U (en) * 2019-12-18 2020-11-06 付默 Syringe is used in division of endocrinology's nursing
CN211705503U (en) * 2019-12-23 2020-10-20 中国人民解放军总医院第八医学中心 Injection needle for endocrinology department
CN213030915U (en) * 2020-03-26 2021-04-23 天津市好曰子动物药业有限公司 Animal remedy syringe for pet
CN215651765U (en) * 2021-09-06 2022-01-28 王剑飞 Blood vessel injection device for animal medical science experiments
CN216496857U (en) * 2021-10-08 2022-05-13 洪湖泰宁医疗器械有限公司 Medicine syringe of accurate dose control
CN216456368U (en) * 2021-11-17 2022-05-10 北京瑷格干细胞科技有限公司 Injection device with adjustable depth

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