CN113952550A - A needle guard - Google Patents

A needle guard Download PDF

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Publication number
CN113952550A
CN113952550A CN202111373835.8A CN202111373835A CN113952550A CN 113952550 A CN113952550 A CN 113952550A CN 202111373835 A CN202111373835 A CN 202111373835A CN 113952550 A CN113952550 A CN 113952550A
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CN
China
Prior art keywords
needle
push
cylinder
rod
pull rod
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Granted
Application number
CN202111373835.8A
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Chinese (zh)
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CN113952550B (en
Inventor
王锡彬
房爱华
刘毅
宋超
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Shandong Weigao Group Medical Polymer Co Ltd
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Shandong Weigao Group Medical Polymer Co Ltd
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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 protection device, which comprises an injector and a protection mechanism, wherein the protection mechanism is fixed at the outer side of the injector, it reduces the post-processing cost, prevents the accidental puncture, prevents the reuse and is more convenient for clinical operation, when the product is packed, the push-pull rod is firstly placed at the first secondary cylinder, when the medical staff needs to use, firstly, the shielding end can be rotated to avoid the needle point, the piston rod is pulled, the push-pull rod is moved out of the first auxiliary cylinder, the push-pull rod is moved into the second auxiliary cylinder when the piston rod is rotated, and the push-pull rod is pressed downwards to extract the liquid medicine and carry out injection operation, because the connecting rod adopts a telescopic design, the problem that the connecting rod interferes the injection when the push-pull rod moves downwards during the injection can be avoided, after the injection is finished, the connecting rod returns to the original length, and the shielding end is rotated to the needle point, so that the effective protection of the needle point can be ensured.

Description

Needle body protection device
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a needle body protection device.
Background
At present, domestic and foreign medical institution, hospital and the extensive majority of individual use still ordinary disposable syringe, the back needle point that finishes using exposes, if handle improperly, cause medical personnel's injury very easily, and the syringe is after finishing using, if the needle point exposes very easily lacerate the storage bag outward, it is inconvenient to collect the processing, therefore expose medical staff and recovery personnel of stabbing very easily at the needle point outward, cause cross infection, how to effectively protect the needle body and become the technical problem who awaits the solution urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the needle body protection device which has the advantages of simple structure, convenient operation and use and low cost and can shield the needle point in time after being used.
The technical scheme of the invention is as follows:
a needle body protection device comprises a syringe and a protection mechanism, and is characterized in that the protection mechanism is fixed on the outer side of the syringe, the syringe 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 protection mechanism comprises a first auxiliary cylinder and a second auxiliary cylinder, the first auxiliary cylinder is tightly connected with the second auxiliary cylinder, and the first auxiliary cylinder and the second auxiliary cylinder are both of hollow cylindrical structures, the second auxiliary cylinder is internally provided with a limiting end, a second piston, a telescopic spring and a corner part, wherein the limiting end is fixed on the inner side of the second auxiliary cylinder, two sides of the telescopic spring are respectively fixed on the limiting end of the second piston, the corner part is fixedly connected with the second piston, the corner part comprises a connecting rod and a shielding end, and the connecting rod and the push-pull rod are made of bendable materials.
Furthermore, the push-pull rod and the second auxiliary cylinder are of cylindrical structures, wherein the radius of the inner side wall of the second auxiliary cylinder is equal to that of the push-pull rod.
Further, the bottom of the shielding end is provided with medical rubber.
Furthermore, the opening is a vertical opening, the opening is arranged on the outer wall of the needle cylinder and is parallel to the central axis of the needle cylinder, and the push-pull rod can move up and down along the opening.
Furthermore, 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 at the second connecting rod, the telescopic rod penetrates into the cavity and can move up and down along the cavity, one end of the second telescopic spring is fixed to the bottom of the cavity, and the other end of the second telescopic spring is fixed to the top of the telescopic rod.
Furthermore, the end part of the shielding end is provided with an inclined baffle plate, so that the needle body can conveniently slide into the bottom of the shielding end.
Further, the shielding end is rotatably matched with the second connecting rod.
The invention has the advantages and positive effects that: the post-processing cost is reduced, the accidental puncture is prevented, the recycling is prevented, the clinical operation is more convenient, during product packaging, the push-pull rod is placed at the first auxiliary cylinder, when medical workers need to use the device, the shielding end can be rotated at first to avoid the needle point, the piston rod is pulled, the push-pull rod is moved out of the first auxiliary cylinder, the push-pull rod is moved into the second auxiliary cylinder when the piston rod is rotated, liquid medicine is extracted and injection operation is carried out by pressing downwards, the problem that the connecting rod interferes with injection due to the fact that the push-pull rod moves downwards when injection is avoided, after the injection is finished, the connecting rod is restored to the original length, the shielding end is rotated to the needle point, and effective protection on the needle point can be guaranteed.
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 guard 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 device comprises a needle cylinder, 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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the figures, the needle body protection device comprises a syringe and a protection mechanism, and is characterized in that the protection mechanism is fixed on the outer side of the syringe, wherein the syringe comprises a syringe 1 and a plunger 2, wherein the syringe 1 is of a hollow cylindrical structure, a needle hole 11 is formed in the front end of the syringe 1, 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 rod 22 is fixedly connected with one side of the piston 21, the piston 21 is positioned in the syringe 1 and can move back and forth along the syringe 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, an opening 12 is formed in one side of the syringe 1, the opening 12 is matched with the push-pull rod 24, the protection mechanism comprises a first sub-barrel 3 and a second sub-barrel 4, the first secondary cylinder 3 is tightly connected with the second secondary cylinder 4, the first secondary cylinder 3 and the second secondary cylinder 4 are both hollow cylindrical structures, the second secondary cylinder 4 comprises a limiting end 41, a second piston 42, a telescopic spring 43 and a corner part 44, the limiting end 41 is fixed on the inner side of the second secondary cylinder 4, two sides of the telescopic spring 43 are respectively fixed on the second piston 42 and the limiting end 41, the corner part 44 is fixedly connected with the second piston 42, the corner part 44 comprises a connecting rod 441 and a shielding end 442, and the connecting rod 441 and the push-pull rod 24 are made of bendable materials.
As a further improvement of the present invention, the push-pull rod 24 and the second secondary cylinder 4 are cylindrical structures, wherein the radius of the inner side wall of the second secondary 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 purpose of pushing the second piston 42.
As a further improvement of the present invention, the bottom of the shielding end 442 is provided with medical rubber, so as to increase the friction force at the bottom of the shielding end 442, and the needle body is not easy to shift 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 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 the first connecting rod 4411 is provided with a cavity, the second connecting rod 4412 is provided with a telescopic rod 4414, the telescopic rod 4414 extends into the cavity and can move up and down along the cavity, one end of the second telescopic spring 4413 is fixed to the bottom of the cavity, and the other end is fixed to the top of the telescopic rod 4414.
As a further improvement of the present invention, the shielding end 442 has an inclined baffle at its end for the needle body to slide into the bottom of the shielding end 442.
As a further improvement of the present invention, the shielding end 442 is rotatably engaged with the second link 4412.
The invention can reduce the post-processing cost, prevent the accidental puncture, prevent the reuse, the clinical operation is more convenient, when the product is packed, the push-pull rod 24 is placed at the first auxiliary cylinder 3 at first, when the medical personnel needs to use, can rotate the shielding end 442 at first, make it avoid the needle point, pull the piston rod 22, move the push-pull rod 24 out of the first auxiliary cylinder 3, the push-pull rod 24 is moved into the second auxiliary cylinder 4 while rotating the piston rod 22, press down and draw the liquid medicine and inject the operation, because the telescopic design adopted at the connecting rod 441, can avoid the problem that the connecting rod interferes with the injection because of the downward movement of the push-pull rod 24 during injecting, after finishing injecting, after the needle body is pulled out from the arm of the patient, the connecting rod 441 is recovered to the original length, rotate the shielding end 442 to the needle point, can guarantee the effective protection to the needle point.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (7)

1.一种针体防护装置，包括有注射器及防护机构，其特征在于，所述防护机构固定于注射器的外侧，其中所述注射器包括有针筒、柱塞，其中所述针筒为中空圆筒状结构，所述针筒的前端设有针孔，所述针孔处安装有针体，其中所述柱塞包括有活塞、活塞杆、按压头及推拉杆构成，其中所述活塞杆与活塞一侧固定连接，所述活塞位于针筒内，可沿针筒前后移动，所述推拉杆与活塞杆一侧固定连接，其中推拉杆为“L”型结构，所述针筒的一侧设有开口，所述开口与推拉杆相配合，所述防护机构包括有第一副筒、第二副筒，其中第一副筒与第二副筒紧密相连，所述第一副筒、第二副筒均为中空圆柱体结构，所述第二副筒内包括有限位端、第二活塞、伸缩弹簧及拐角部，其中限位端固定于第二副筒内侧，伸缩弹簧两侧分别固定于第二活塞机限位端，所述拐角部与第二活塞处固定连接，所述拐角部包括有连杆及遮蔽端，所述连杆、推拉杆采用可弯曲材质构成。1. a needle protection device, comprising a syringe and a protective mechanism, wherein the protective mechanism is fixed on the outside of the syringe, wherein the syringe includes a syringe, a plunger, and wherein the syringe is a hollow circle A cylindrical structure, the front end of the needle cylinder is provided with a needle hole, and a needle body is installed at the needle hole, wherein the plunger comprises a piston, a piston rod, a pressing head and a push-pull rod, wherein the piston rod and the One side of the piston is fixedly connected, the piston is located in the needle cylinder and can move back and forth along the needle cylinder, and the push-pull rod is fixedly connected to one side of the piston rod, wherein the push-pull rod is an "L"-shaped structure, and one side of the needle cylinder is fixedly connected. There is an opening, the opening is matched with the push-pull rod, the protection mechanism includes a first auxiliary cylinder and a second auxiliary cylinder, wherein the first auxiliary cylinder and the second auxiliary cylinder are closely connected, and the first auxiliary cylinder and the second auxiliary cylinder are closely connected. Both secondary cylinders are of hollow cylindrical structure. The second secondary cylinder includes a limiting end, a second piston, a telescopic spring and a corner portion, wherein the limiting end is fixed inside the second secondary cylinder, and both sides of the expansion spring are fixed respectively. At the limit end of the second piston machine, the corner portion is fixedly connected with the second piston, the corner portion includes a connecting rod and a shielding end, and the connecting rod and the push-pull rod are made of bendable materials. 2.根据权利要求1所述的一种针体防护装置，其特征在于，所述推拉杆及第二副筒为圆柱体结构，其中第二副筒内侧壁半径等于推拉杆半径。2 . The needle protection device according to claim 1 , wherein the push-pull rod and the second sub-cylinder are cylindrical structures, wherein the radius of the inner wall of the second sub-cylinder is equal to the radius of the push-pull rod. 3 . 3.根据权利要求1所述的一种针体防护装置，其特征在于，所述遮蔽端底部设有医用橡胶。3 . The needle body protection device according to claim 1 , wherein medical rubber is provided at the bottom of the shielding end. 4 . 4.根据权利要求1所述的一种针体防护装置，其特征在于，所述开口为竖向开口，所述开口设于针筒外壁上，与针筒的中心轴线相平行开设，所述推拉杆可沿开口处上下位移。4 . The needle body protection device according to claim 1 , wherein the opening is a vertical opening, the opening is arranged on the outer wall of the needle cylinder and is opened parallel to the central axis of the needle cylinder, and the The push-pull rod can move up and down along the opening. 5.根据权利要求1所述的一种针体防护装置，其特征在于，所述连杆包括有第一连杆、第二连杆及第二伸缩弹簧，其中第一连杆处设有空腔，第二连杆处设有伸缩杆，其中所述伸缩杆深入空腔内，可沿空腔处上下位移，所述第二伸缩弹簧的一端与空腔底部固定，另一端与连接杆顶部固定。5 . 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 the first connecting rod is provided with a hollow space. 6 . The second connecting rod is provided with a telescopic rod, wherein the telescopic rod penetrates into the cavity and can be displaced up and down along the cavity. One end of the second telescopic spring is fixed to the bottom of the cavity, and the other end is connected to the top of the connecting rod. fixed. 6.根据权利要求1所述的一种针体防护装置，其特征在于，所述遮蔽端的端部设有倾斜挡板，便于针体滑入遮蔽端底部。6 . The needle body protection device according to claim 1 , wherein the end of the shielding end is provided with an inclined baffle to facilitate the needle body to slide into the bottom of the shielding end. 7 . 7.根据权利要求1所述的一种针体防护装置，其特征在于，所述遮蔽端与第二连杆处可转动配合。7 . The needle protection device according to claim 1 , wherein the shielding end is rotatably matched with the second link. 8 .
CN202111373835.8A 2021-11-19 2021-11-19 Needle body protection device Active CN113952550B (en)

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

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Application Number Priority Date Filing Date Title
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CN113952550B CN113952550B (en) 2023-06-16

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103212142A (en) * 2013-04-28 2013-07-24 杭州市红十字会医院 Needling prevention injector
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103212142A (en) * 2013-04-28 2013-07-24 杭州市红十字会医院 Needling prevention injector
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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