CN103721321A - Automatic filtration injector - Google Patents

Automatic filtration injector Download PDF

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Publication number
CN103721321A
CN103721321A CN201410036207.4A CN201410036207A CN103721321A CN 103721321 A CN103721321 A CN 103721321A CN 201410036207 A CN201410036207 A CN 201410036207A CN 103721321 A CN103721321 A CN 103721321A
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CN
China
Prior art keywords
needle stand
needle
valves
check
injection
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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.)
Granted
Application number
CN201410036207.4A
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Chinese (zh)
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CN103721321B (en
Inventor
夏欣瑞
李君�
丛日楠
赵素霞
姜丽敏
王志范
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
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Application filed by Shandong Weigao Group Medical Polymer Co Ltd filed Critical Shandong Weigao Group Medical Polymer Co Ltd
Priority to CN201410036207.4A priority Critical patent/CN103721321B/en
Publication of CN103721321A publication Critical patent/CN103721321A/en
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Publication of CN103721321B publication Critical patent/CN103721321B/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
    • A61M5/31—Details
    • A61M5/3145—Filters incorporated in 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
    • A61M5/3148—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
    • A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves

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

Abstract

The invention discloses an automatic filtration injector, which comprises an injector and a filtration injection needle, wherein the injection needle consists of a needle tube and needle holders; the needle tube is arranged at the front end of an upper needle holder; the back end of a lower needle holder is connected to the taper head of the injector; the front end of the lower needle seat is combined with the upper needle seat, so that a liquid suction inlet and an injection outlet are formed; a check valve is arranged on the lower needle holder, and is opened in the liquid suction direction of the liquid suction inlet and the injection direction of the injection outlet; and a filter is arranged at the liquid suction inlet. Filtration and injection processes are carried out automatically without replacing a needle head. The injector is simple in overall structure, convenient to operate, safe, reliable, low in cost and disposable, and the content of medicament impurities and the risk of cross infection can be lowered effectively.

Description

A kind of automatic fitration syringe
Technical field
The present invention relates to syringe, specifically a kind of automatic fitration syringe.
Background technology
As everyone knows, the injection of current clinical use is encapsulated in vial more, and when pricking rubber stopper or cutting vial extraction medicinal liquid with emery wheel with the syringe needle of syringe, bottle stopper material bits or glass powder can enter in injection.Traditional syringe does not have filtering function, during extracting liquid medicine, these impurity can be extracted in syringe and direct injection to patient, thereby bring out the diseases such as inflammation of vein.Chinese invention patent application CN102600535A, a kind of entry needle with accurate filter is disclosed, comprise needle tubing and the needle stand with inner via hole, described needle stand inner via hole comprises compare little top, aperture, compare great bottom, aperture and has the pars intermedia of upwards bringing gradually reduced bore structure together, described needle tubing one end is placed in the top of described inner via hole, is provided with a filter in the inner via hole of described needle stand.Because this entry needle feed pathway and liquid outlet channel are same passages, after filtration, need again to change injection needle, but in filtering needle and injection needle Renewal process, have by the risk of the pollution of antibacterial or virus, clinical manipulation is also inconvenient simultaneously.
Summary of the invention
The object of this invention is to provide a kind of simple in structure, can effectively realize filtering function and when injection without the automatic fitration syringe of changing syringe needle.
Technical scheme of the present invention is: a kind of automatic fitration syringe, comprise syringe and filter entry needle, described entry needle is comprised of needle tubing and needle stand, needle tubing is arranged on the front end of needle stand, the rear end of lower needle stand is connected on the conehead of syringe, and the front end of lower needle stand is combined with upper needle stand and is formed imbibition entrance and injection outlet, on lower needle stand, check-valves is installed, check-valves is opened in the imbibition direction of imbibition entrance and the injection direction of injection outlet, on imbibition entrance, filter is installed.
As a kind of preferred structure, the mid portion of lower needle stand upper end extends upward and forms column type fluid passage, this fluid passage becomes injection outlet, injection outlet is around liquid inlet, check-valves is umbrella-shaped structure, and check-valves center has a fixed cover to be enclosed within the outside of column type fluid passage, between check-valves umbrella top and column type fluid passage top, forms spatia, one opening is arranged at umbrella top, and edge extends to form flap structure downwards.
Described check-valves adopts the good elastomeric material of elasticity, preferably silica gel material.
The lower end of described column type fluid passage is connected by Connection Block with lower needle stand, has hole on Connection Block, forms liquid inlet.
Described Connection Block top edges is provided with the edge lug boss of an annular, boss in the middle of outside column type fluid passage and edge lug boss corresponding section is provided with, on filter membrane welding edge boss and middle boss, filter membrane is except welding portion, the upper needle stand of remainder discord contacts with lower needle stand, form vacant state, improved effective filtration area.
The invention has the beneficial effects as follows: filtration and injection process carry out automatically, do not need to change syringe needle, avoided antibacterial and virus to wait the probability of polluting.While is filtering liquid medicine when taking out medicine only, during injection, need not filter, and can not increase injection resistance, and its inject time is the same with ordinary syringe.That automatic fitration syringe of the present invention has overall structure is simple, easy to operate, safe and reliable, cost is low, disposable use, the advantage of effectively avoiding cross infection to occur.
Accompanying drawing explanation
Fig. 1 is the structural representation of automatic fitration syringe of the present invention.
Fig. 2 is the decomposition texture schematic diagram of the needle stand of automatic fitration syringe of the present invention.
Fig. 3 is the present invention's flow direction schematic diagram in needle stand while extracting medicinal liquid.
Flow direction schematic diagram in needle stand when Fig. 4 is liquid medicine injection of the present invention.
In figure, 1 syringe, 2 coneheads, 3 entry needles, 4 needle tubings, 5 needle stands, needle stand on 6,7 times needle stands, 8 imbibition entrances, 9 injection outlets, 10 check-valves, 10a fixed cover, 10b umbrella top, 10c flap structure, 10d opening, 11 column type fluid passages, 12 spatias, 13 Connection Blocks, 14 holes, 15 edge lug boss, 16 middle boss, 17 filter membranes.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
From Fig. 1-Fig. 4, can find out, a kind of automatic fitration syringe, comprise syringe 1 and entry needle 3, described entry needle 3 is comprised of needle tubing 4 and needle stand 5, needle tubing 4 is arranged on the front end of needle stand 6, the rear end of lower needle stand 7 is connected on the conehead 2 of syringe 1, the front end of lower needle stand 7 and upper needle stand 6 are in conjunction with forming imbibition entrance 8 and injection outlet 9, on lower needle stand 7, check-valves 10 is installed, check-valves 10 is opened in the imbibition direction of imbibition entrance and the injection direction of injection outlet, on imbibition entrance 8, filter is installed.
As Fig. 2, shown in Fig. 3 and Fig. 4, the mid portion of lower needle stand 7 upper ends extends upward and forms column type fluid passage 11, this fluid passage becomes injection outlet, injection outlet is around liquid inlet, check-valves 10 is umbrella-shaped structure, check-valves 10 centers have a fixed cover 10a to be enclosed within the outside of column type fluid passage 11, between the top of check-valves umbrella top 10b and column type fluid passage 11, form spatia 12, umbrella top 10b has an opening 10d, spatia 12 is conducive to umbrella top 10b and produces distortion, shutoff opening 10d when extracting medicinal liquid, during injection liquid, strut opening 10d, edge extends to form flap structure 10c downwards, flap structure 10c be similar to skirt the bottom, its inside provides enough spaces for fixed cover 10a, make the outer surface fitting area of fixed cover 10a and column type fluid passage 11 large, the two laminating closely, avoid the medicinal liquid in syringe to pass through from binding face.Flap structure 10c can receive in fixed cover 10a direction, the smooth and easy inflow syringe of medicinal liquid that guiding sucks.When injection liquid, flap structure 10c can open in addition, with upper needle stand 6 internal chamber wall interference fit, shutoff imbibition entrance, guarantees that liquid flows out through injection outlet.
Check-valves 10 adopts the good elastomeric material of elasticity, preferably silica gel material.Silica gel material elasticity is large, morphotropism good, can meet the demand of opening passage and closed channel.
The lower end of column type fluid passage 11 is connected by Connection Block 13 with lower needle stand, has hole 14 on Connection Block, forms liquid inlet, and Connection Block 13 can be cross structure as shown in FIG., can be also that other are convenient to the structure connecting.For the ease of defecator is installed, Connection Block 13 top edges are provided with the edge lug boss 15 of an annular, boss 16 in the middle of outside column type fluid passage 11 and edge lug boss 15 corresponding sections are provided with, on filter membrane 17 welding edge boss 15 and middle boss 16, filter membrane 17 is except welding portion, the upper needle stand 6 of remainder discord and lower pin 7 seated connections touch, and form vacant state, have improved effective filtration area.
As shown in Figure 3, check-valves 10 is when extracting medicinal liquid, under negative pressure and fluid pressure effect; umbrella limit is that flap structure 10c can shrink formation fluid passage; the opening 10d of umbrella top 10b is because of extruding meeting sealing simultaneously; the edge of liquid process umbrella is by filter membrane 17, and the hole 14 on Connection Block, enters in syringe; As shown in Figure 4, check-valves 10 is when liquid medicine injection, under fluid pressure effect; umbrella limit is that flap structure 10c can open and shuts fluid passage; the opening 10d of umbrella top 10b can open formation fluid passage under pressure; liquid can be entered in needle stand fluid passage through opening 10d by cylinder fluid passage 11, then enters human body by needle tubing 4.

Claims (6)

1. an automatic fitration syringe, comprise syringe and filter entry needle, described entry needle is comprised of needle tubing and needle stand, needle tubing is arranged on the front end of needle stand, the rear end of lower needle stand is connected on the conehead of syringe, it is characterized in that: the front end of lower needle stand is combined with upper needle stand and is formed imbibition entrance and injection outlet, on lower needle stand, check-valves is installed, check-valves is opened in the imbibition direction of imbibition entrance and the injection direction of injection outlet, on imbibition entrance, filter is installed.
2. automatic fitration syringe according to claim 1, it is characterized in that: the mid portion of lower needle stand upper end extends upward and forms column type fluid passage, this fluid passage becomes injection outlet, injection outlet is around liquid inlet, check-valves is umbrella-shaped structure, and check-valves center has a fixed cover to be enclosed within the outside of column type fluid passage, between the top of check-valves umbrella top and column type fluid passage, forms spatia, one opening is arranged at umbrella top, and edge extends to form flap structure downwards.
3. automatic fitration syringe according to claim 2, is characterized in that: described check-valves adopts resilient elastomeric material to make.
4. automatic fitration syringe according to claim 3, is characterized in that: described check-valves adopts silica gel material to make.
5. automatic fitration syringe according to claim 2, is characterized in that: the lower end of described column type fluid passage is connected by Connection Block with lower needle stand, has hole on Connection Block, forms liquid inlet.
6. automatic fitration syringe according to claim 1, it is characterized in that: described Connection Block top edges is provided with the edge lug boss of an annular, boss in the middle of outside column type fluid passage and edge lug boss corresponding section is provided with, on filter membrane welding edge boss and middle boss, filter membrane is except welding portion, the upper needle stand of remainder discord contacts with lower needle stand, forms vacant state.
CN201410036207.4A 2014-01-26 2014-01-26 A kind of automatic fitration syringe Active CN103721321B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN103721321B CN103721321B (en) 2015-12-02

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104524670A (en) * 2015-01-19 2015-04-22 宣城市江南医疗器械有限公司 Needle type precise filtering and medicine dissolving syringe
CN105708693A (en) * 2016-03-30 2016-06-29 王高松 Filter needle for injector
CN105832546A (en) * 2016-05-27 2016-08-10 浙江康德莱医疗器械股份有限公司 Safe dispensing injection needle with one-way filter function
CN105919806A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Dispensing injection needle with one-way filtration function
CN105919808A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Dispensing injection needle with one-way filtration structure
CN105919805A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Dispensing injection needle with bi-directional filtration function
CN105919807A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Safe dispensing injection needle with bi-directional filtration function
CN106075660A (en) * 2016-06-20 2016-11-09 浙江信纳医疗器械科技有限公司 Filtration syringe
CN106334235A (en) * 2016-09-21 2017-01-18 山东威高集团医用高分子制品股份有限公司 Filter needle head
CN106390241A (en) * 2016-10-14 2017-02-15 山东威高集团医用高分子制品股份有限公司 Filtering and injection syringe needle
CN106668993A (en) * 2016-10-14 2017-05-17 山东威高集团医用高分子制品股份有限公司 Filtering injection needle
CN107427310A (en) * 2014-12-18 2017-12-01 M·A·科斯卡 Disposable injecting systems
CN107635600A (en) * 2015-05-20 2018-01-26 象牙弗隆泰克株式会社 Syringe filter construction and the syringe for including it
CN105832547B (en) * 2016-05-27 2018-07-24 浙江康德莱医疗器械股份有限公司 Bi-directional filtered dispensation injection needle
CN105853227B (en) * 2016-05-27 2018-08-21 浙江康德莱医疗器械股份有限公司 Unidirectional filtering safe type dispensation injection needle
CN108778377A (en) * 2016-03-22 2018-11-09 罗镛国 Filtration syringe
JP2019503243A (en) * 2016-01-27 2019-02-07 ヨン−クク ラ Syringe
CN109464726A (en) * 2018-12-17 2019-03-15 山东威高集团医用高分子制品股份有限公司 Unidirectional filtration syringe
CN109641112A (en) * 2016-06-02 2019-04-16 罗镛国 The outer cap of injecting liquid drug device
CN114748734A (en) * 2022-03-28 2022-07-15 李开雄 Precise filtering injector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332249A (en) * 1980-08-01 1982-06-01 Sherwood Medical Industries, Inc. Filter and valve assembly for hypodermic syringe
WO2010013868A1 (en) * 2008-07-28 2010-02-04 Kang-Koo Kang Safety filter tip for a syringe
CN103492009A (en) * 2011-04-08 2014-01-01 佳迈特股份有限公司 Filter needle
CN103511685A (en) * 2012-06-27 2014-01-15 伯尔拉工业有限公司 One-way valve for medical lines
CN203694266U (en) * 2014-01-26 2014-07-09 山东威高集团医用高分子制品股份有限公司 Automatic filtering injector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332249A (en) * 1980-08-01 1982-06-01 Sherwood Medical Industries, Inc. Filter and valve assembly for hypodermic syringe
WO2010013868A1 (en) * 2008-07-28 2010-02-04 Kang-Koo Kang Safety filter tip for a syringe
CN103492009A (en) * 2011-04-08 2014-01-01 佳迈特股份有限公司 Filter needle
CN103511685A (en) * 2012-06-27 2014-01-15 伯尔拉工业有限公司 One-way valve for medical lines
CN203694266U (en) * 2014-01-26 2014-07-09 山东威高集团医用高分子制品股份有限公司 Automatic filtering injector

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107427310A (en) * 2014-12-18 2017-12-01 M·A·科斯卡 Disposable injecting systems
CN104524670A (en) * 2015-01-19 2015-04-22 宣城市江南医疗器械有限公司 Needle type precise filtering and medicine dissolving syringe
CN107635600A (en) * 2015-05-20 2018-01-26 象牙弗隆泰克株式会社 Syringe filter construction and the syringe for including it
JP2019503243A (en) * 2016-01-27 2019-02-07 ヨン−クク ラ Syringe
CN108778377A (en) * 2016-03-22 2018-11-09 罗镛国 Filtration syringe
CN105708693A (en) * 2016-03-30 2016-06-29 王高松 Filter needle for injector
CN105832546B (en) * 2016-05-27 2018-07-24 浙江康德莱医疗器械股份有限公司 Safety-type dispensation injection needle with unidirectional filtering function
CN105919805B (en) * 2016-05-27 2018-08-21 浙江康德莱医疗器械股份有限公司 Dispensation injection needle with bi-directional filtered function
CN105832546A (en) * 2016-05-27 2016-08-10 浙江康德莱医疗器械股份有限公司 Safe dispensing injection needle with one-way filter function
CN105919806A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Dispensing injection needle with one-way filtration function
CN105919806B (en) * 2016-05-27 2018-09-21 浙江康德莱医疗器械股份有限公司 Dispensation injection needle with unidirectional filtering function
CN105919807A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Safe dispensing injection needle with bi-directional filtration function
CN105919805A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Dispensing injection needle with bi-directional filtration function
CN105919807B (en) * 2016-05-27 2018-07-03 浙江康德莱医疗器械股份有限公司 Safety-type bi-directional filtered dispensation injection needle
CN105919808A (en) * 2016-05-27 2016-09-07 浙江康德莱医疗器械股份有限公司 Dispensing injection needle with one-way filtration structure
CN105832547B (en) * 2016-05-27 2018-07-24 浙江康德莱医疗器械股份有限公司 Bi-directional filtered dispensation injection needle
CN105853227B (en) * 2016-05-27 2018-08-21 浙江康德莱医疗器械股份有限公司 Unidirectional filtering safe type dispensation injection needle
CN105919808B (en) * 2016-05-27 2018-08-24 浙江康德莱医疗器械股份有限公司 Dispensation injection needle with unidirectional filtration
CN109641112A (en) * 2016-06-02 2019-04-16 罗镛国 The outer cap of injecting liquid drug device
CN109641112B (en) * 2016-06-02 2021-07-06 罗镛国 Outer cap of liquid medicine injection device
CN106075660A (en) * 2016-06-20 2016-11-09 浙江信纳医疗器械科技有限公司 Filtration syringe
CN106075660B (en) * 2016-06-20 2022-07-22 浙江信纳医疗器械科技有限公司 Filtering syringe
CN106334235A (en) * 2016-09-21 2017-01-18 山东威高集团医用高分子制品股份有限公司 Filter needle head
CN106668993A (en) * 2016-10-14 2017-05-17 山东威高集团医用高分子制品股份有限公司 Filtering injection needle
CN106390241A (en) * 2016-10-14 2017-02-15 山东威高集团医用高分子制品股份有限公司 Filtering and injection syringe needle
CN109464726A (en) * 2018-12-17 2019-03-15 山东威高集团医用高分子制品股份有限公司 Unidirectional filtration syringe
CN114748734A (en) * 2022-03-28 2022-07-15 李开雄 Precise filtering injector
CN114748734B (en) * 2022-03-28 2024-06-11 李开雄 Precise filtering injector

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