CN113952550B - Needle body protection device - Google Patents

Needle body protection device Download PDF

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Publication number
CN113952550B
CN113952550B CN202111373835.8A CN202111373835A CN113952550B CN 113952550 B CN113952550 B CN 113952550B CN 202111373835 A CN202111373835 A CN 202111373835A CN 113952550 B CN113952550 B CN 113952550B
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CN
China
Prior art keywords
needle
cylinder
auxiliary cylinder
piston
rod
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111373835.8A
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Chinese (zh)
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CN113952550A (en
Inventor
王锡彬
房爱华
刘毅
宋超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Weigao Group Medical Polymer Co Ltd
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Shandong Weigao Group Medical Polymer Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Shandong Weigao Group Medical Polymer Co Ltd filed Critical Shandong Weigao Group Medical Polymer Co Ltd
Priority to CN202111373835.8A priority Critical patent/CN113952550B/en
Publication of CN113952550A publication Critical patent/CN113952550A/en
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Publication of CN113952550B publication Critical patent/CN113952550B/en
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    • 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
    • A61M5/3129—Syringe barrels
    • 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
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention discloses a needle body protecting device, which comprises an injector and a protecting mechanism, wherein the protecting mechanism is fixed on the outer side of the injector, compared with the prior art, the protecting mechanism reduces post-treatment cost, prevents false stabbing, prevents repeated use and is more convenient for clinical operation, when a product is packaged, a push-pull rod is firstly arranged at a first auxiliary cylinder, when a medical staff needs to use the protecting device, the protecting device can firstly rotate a shielding end to avoid a needle point, a piston rod is pulled, the push-pull rod is moved out of the first auxiliary cylinder, the push-pull rod is moved into a second auxiliary cylinder when the piston rod is rotated, and the push-pull rod is pressed downwards to extract liquid medicine and perform injection operation.

Description

Needle body protection device
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a needle body protecting device.
Background
At present, most of medical institutions at home and abroad, hospitals and individuals widely use or are ordinary disposable syringes, the needle tip is exposed after the use, if the needle tip is improperly processed, the harm to medical staff is very easy to cause, and after the use of the syringe is finished, if the needle tip is exposed outside, the storage bag is very easy to scratch, the collection and the treatment are inconvenient, so that the medical staff and the recovery staff are easily stabbed by the exposed needle tip, cross infection is caused, and therefore, how to effectively protect the needle body is a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the needle body protecting device which is simple in structure, convenient to operate and use and low in cost, and can timely shield the needle point after being used.
The technical scheme of the invention is as follows:
the needle body protecting device comprises an injector and a protecting mechanism, and is characterized in that the protecting mechanism is fixed on the outer side of the injector, the injector comprises a needle cylinder and a plunger, the needle cylinder is of a hollow cylindrical structure, a needle hole is formed in the front end of the needle cylinder, a needle body is installed at the needle hole, the plunger comprises a piston, a piston rod, a pressing head and a push-pull rod, the piston rod is fixedly connected with one side of the piston, the piston is located in the needle cylinder and can move back and forth along the needle cylinder, the push-pull rod is fixedly connected with one side of the piston rod, the push-pull rod is of an L-shaped structure, an opening is formed in one side of the needle cylinder and is matched with the push-pull rod, the protecting mechanism comprises a first auxiliary cylinder and a second auxiliary cylinder, the first auxiliary cylinder is tightly connected with the second auxiliary cylinder, the first auxiliary cylinder and the second auxiliary cylinder are of a hollow cylindrical structure, the second auxiliary cylinder comprises a limiting end, a second piston, a telescopic spring and a corner, the limiting end is fixedly connected with the inner side of the second cylinder, two sides of the piston are fixedly connected with the second piston, the corner and the corner of the second piston can be fixedly connected with the limiting end and the corner.
Further, the push-pull rod and the second auxiliary cylinder are of a cylinder structure, wherein the radius of the inner side wall of the second auxiliary cylinder is equal to the radius of the push-pull rod.
Further, medical rubber is arranged at the bottom of the shielding end.
Further, the opening is a vertical opening, the opening is arranged on the outer wall of the needle cylinder and is arranged parallel to the central axis of the needle cylinder, and the push-pull rod can move up and down along the opening.
Further, the connecting rod comprises a first connecting rod, a second connecting rod and a second telescopic spring, wherein a cavity is formed in the first connecting rod, a telescopic rod is arranged in the second connecting rod, the telescopic rod penetrates into the cavity and can vertically displace along the cavity, one end of the second telescopic spring is fixed with the bottom of the cavity, and the other end of the second telescopic spring is fixed with the top of the telescopic rod.
Further, the end part of the shielding end is provided with an inclined baffle plate, so that the needle body can slide into the bottom of the shielding end conveniently.
Further, the shielding end is rotatably matched with the second connecting rod.
The invention has the advantages and positive effects that: the utility model provides a medical staff need use, at first can be with shielding the end rotatory, make it avoid needle point department, the pulling piston rod, shift out first sub-section of thick bamboo with the push-and-pull rod, push-and-pull rod moves into second sub-section of thick bamboo department when rotating the piston rod, push-and-pull rod pushes down and carries out extraction liquid medicine and injection operation, because connecting rod department adopts scalable design, can avoid when injecting, the push-and-pull rod moves down and causes the connecting rod problem of disturbing the injection, after the injection, connecting rod department resumes original length, rotate shielding end to needle point department, can guarantee the effective protection to needle point department.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the protection mechanism of the present invention;
fig. 3 is a schematic view of the structure at the connecting rod of the present invention.
In the figure: 1. the needle cylinder comprises a needle cylinder body, 11, a needle hole, 12, an opening, 2, a plunger, 21, a piston, 22, a piston rod, 23, a pressing head, 24, a push-pull rod, 3, a first auxiliary cylinder, 4, a second auxiliary cylinder, 41, a limiting end, 42, a second piston, 43, a telescopic spring, 44, a corner part, 441, a connecting rod, 4411, a first connecting rod, 4412, a second connecting rod, 4413, a second telescopic spring, 4414, a telescopic rod, 442 and a shielding end.
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.
As shown in the figure, a needle body protection device comprises an injector and a protection mechanism, and is characterized in that the protection mechanism is fixed on the outer side of the injector, wherein the injector comprises a needle cylinder 1 and a plunger 2, the needle cylinder 1 is of a hollow cylindrical structure, the front end of the needle cylinder 1 is provided with a needle hole 11, a needle body is installed at the needle hole 11, the plunger 2 comprises a piston 21, a piston rod 22, a pressing head 23 and a push-pull rod 24, the piston 22 is fixedly connected with one side of the piston 21, the piston 21 is positioned in the needle cylinder 1 and can move forwards and backwards along the needle cylinder 1, the push-pull rod 24 is fixedly connected with one side of the piston rod 22, the push-pull rod 24 is of an L-shaped structure, one side of the needle cylinder 1 is provided with an opening 12, the opening 12 is matched with the push-pull rod 24, the protection mechanism comprises a first auxiliary cylinder 3 and a second auxiliary cylinder 4, the first auxiliary cylinder 3 and the second auxiliary cylinder 4 are tightly connected with each other, the first auxiliary cylinder 3 and the second auxiliary cylinder 4 comprise a hollow cylindrical structure, the second auxiliary cylinder 4 comprises a piston end 441, a second auxiliary cylinder 441 and a limit end 41, a second auxiliary cylinder 41 and a limit end 41 and a second auxiliary cylinder 44 are fixedly connected with the second auxiliary cylinder 44, and a limit end 44 are fixedly connected with the two limit ends 42 and a corner 44 are respectively, and the limit end 44 are fixedly connected with the limit end 44.
As a further improvement of the present invention, the push-pull rod 24 and the second auxiliary cylinder 4 have a cylindrical structure, wherein the radius of the inner side wall of the second auxiliary cylinder 4 is equal to the radius of the push-pull rod 24, so as to prevent the push-pull rod 24 from bending therein and achieve the pushing purpose for the second piston 42.
As a further improvement of the present invention, the bottom of the shielding end 442 is provided with medical rubber, which increases the friction force at the bottom of the shielding end 442, and the needle body is not easy to deviate after entering the bottom of the shielding end 442.
As a further improvement of the invention, the opening 12 is a vertical opening, the opening 12 is arranged on the outer wall of the needle cylinder 1 and is arranged parallel to the central axis of the needle cylinder 1, and the push-pull rod 24 can move up and down along the opening 12.
As a further improvement of the present invention, the connecting rod 441 includes a first connecting rod 4411, a second connecting rod 4412 and a second telescopic spring 4413, wherein a cavity is formed at the first connecting rod 4411, a telescopic rod 4414 is formed at the second connecting rod 4412, the telescopic rod 4414 is deep into the cavity and can move up and down along the cavity, one end of the second telescopic spring 4413 is fixed with the bottom of the cavity, and the other end is fixed with the top of the telescopic rod 4414.
As a further improvement of the present invention, the end of the shielding end 442 is provided with an inclined baffle to facilitate sliding of the needle into the bottom of the shielding end 442.
As a further development of the invention, the shielding end 442 is rotatably fitted to the second link 4412.
The invention can reduce post-treatment cost, prevent false stabbing, prevent repeated use and more convenient clinical operation, when the product is packaged, firstly the push-pull rod 24 is placed at the first auxiliary cylinder 3, when the medical staff needs to use, firstly the shielding end 442 can be rotated to avoid the needle point, the piston rod 22 is pulled, the push-pull rod 24 is moved out of the first auxiliary cylinder 3, the push-pull rod 24 is moved into the second auxiliary cylinder 4 when the piston rod 22 is rotated, and the medicine liquid is pumped and the injection operation is carried out by downward pressing, because the connecting rod 441 adopts a telescopic design, the problem that the connecting rod is interfered by the injection caused by the downward movement of the push-pull rod 24 can be avoided, after the injection is finished, when the needle body is pulled out from the arm of a patient, the connecting rod 441 is restored to the original length, and the effective protection of the needle point can be ensured by rotating the shielding end 442 to the needle point.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims (5)

1. The needle body protecting device comprises an injector and a protecting mechanism, and is characterized in that the protecting mechanism is fixed on the outer side of the injector, the injector comprises a needle cylinder and a plunger, the needle cylinder is of a hollow cylindrical structure, a needle hole is formed in the front end of the needle cylinder, a needle body is mounted at the needle hole, the plunger comprises a piston, a piston rod, a pressing head and a push-pull rod, the piston rod is fixedly connected with one side of the piston, the piston is located in the needle cylinder and can move back and forth along the needle cylinder, the push-pull rod is fixedly connected with one side of the piston rod, the push-pull rod is of an L-shaped structure, an opening is formed in one side of the needle cylinder, the opening is matched with the push-pull rod, the protecting mechanism comprises a first auxiliary cylinder and a second auxiliary cylinder, the first auxiliary cylinder is tightly connected with the second auxiliary cylinder, the first auxiliary cylinder and the second auxiliary cylinder are of hollow cylindrical structures, the second auxiliary cylinder comprises a limiting end, a second piston, a telescopic spring and a part, the limiting end is fixedly connected with the inner side of the second cylinder, the two sides of the piston rod are respectively, the two sides of the piston are fixedly connected with the second piston end and the two sides of the second auxiliary cylinder are fixedly connected with the second auxiliary cylinder, the two side of the piston rod are parallel to the radius of the first auxiliary cylinder, the opening is parallel to the opening is formed with the upper side of the needle cylinder, and the radius of the second auxiliary cylinder is parallel to the opening, and the opening is equal to the radius of the opening is formed on the upper side of the cylinder.
2. A needle guard according to claim 1, wherein the shielding end is provided with medical rubber at the bottom.
3. The needle protection device according to claim 1, wherein the connecting rod comprises a first connecting rod, a second connecting rod and a second telescopic spring, wherein a cavity is arranged at the first connecting rod, a telescopic rod is arranged at the second connecting rod, the telescopic rod stretches into the cavity and can move up and down along the cavity, one end of the second telescopic spring is fixed with the bottom of the cavity, and the other end of the second telescopic spring is fixed with the top of the connecting rod.
4. A needle guard according to claim 1, wherein the end of the shield end is provided with a sloped baffle to facilitate sliding of the needle into the bottom of the shield end.
5. A needle guard according to claim 1, wherein the shield end is rotatably engaged with the second link.
CN202111373835.8A 2021-11-19 2021-11-19 Needle body protection device Active CN113952550B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111373835.8A CN113952550B (en) 2021-11-19 2021-11-19 Needle body protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111373835.8A CN113952550B (en) 2021-11-19 2021-11-19 Needle body protection device

Publications (2)

Publication Number Publication Date
CN113952550A CN113952550A (en) 2022-01-21
CN113952550B true CN113952550B (en) 2023-06-16

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Application Number Title Priority Date Filing Date
CN202111373835.8A Active CN113952550B (en) 2021-11-19 2021-11-19 Needle body protection device

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103212142B (en) * 2013-04-28 2015-08-19 杭州市红十字会医院 Anti-acupuncture syringe
CN203861697U (en) * 2014-03-06 2014-10-08 中国人民解放军第三军医大学第一附属医院 Automatic injector
CN204671665U (en) * 2015-03-31 2015-09-30 柴守霞 Novel injection pin
CN204951832U (en) * 2015-08-12 2016-01-13 天津市安德伟业医疗器械有限公司 Sterile injector
CN213030922U (en) * 2020-06-17 2021-04-23 闫文军 Veterinary syringe

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