CN105597194A - Dispensing syringe with low residual medicine liquid - Google Patents

Dispensing syringe with low residual medicine liquid Download PDF

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Publication number
CN105597194A
CN105597194A CN201510915584.XA CN201510915584A CN105597194A CN 105597194 A CN105597194 A CN 105597194A CN 201510915584 A CN201510915584 A CN 201510915584A CN 105597194 A CN105597194 A CN 105597194A
Authority
CN
China
Prior art keywords
piston
main body
syringe
needle cylinder
pin
Prior art date
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.)
Pending
Application number
CN201510915584.XA
Other languages
Chinese (zh)
Inventor
邹小龙
魏智娟
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.)
SHANGHAI BAODAO MEDICAL EQUIPMENT CO Ltd
Original Assignee
SHANGHAI BAODAO MEDICAL EQUIPMENT 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.)
Filing date
Publication date
Application filed by SHANGHAI BAODAO MEDICAL EQUIPMENT CO Ltd filed Critical SHANGHAI BAODAO MEDICAL EQUIPMENT CO Ltd
Priority to CN201510915584.XA priority Critical patent/CN105597194A/en
Publication of CN105597194A publication Critical patent/CN105597194A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a dispensing syringe with low residual medicine liquid. The dispensing syringe comprises a needle cylinder assembly and a piston assembly; the needle cylinder assembly comprises a needle cylinder main body, a connecting column connected with a needle and a needle cylinder handle; the piston assembly comprises a piston rod with a piston and a piston handle; the side wall of the piston is provided with at least one ring of sealing convex arris; when the piston is pushed to the top end, a gap formed among the sealing convex arris, the upper end face of the piston and the needle cylinder main body serves as a liquid storage portion; the needle cylinder main body is provided with an extrusion portion of which the shape, size and position are matched with those of the liquid storage portion. The dispensing syringe has the following advantages that by improving the needle cylinder main body and arranging the extrusion portion matched with the liquid storage portion in the needle cylinder main body, the residual medicine liquid in the liquid storage portion can be effectively extruded out of the needle cylinder, and the low residual medicine liquid purpose is achieved; by arranging the extrusion rod on the upper end face of the piston, medicine liquid in the connecting column is extruded out of the needle cylinder main body, and the low residual medicine liquid purpose is achieved.

Description

A kind of dispensing injector with pin of low liquor residue
Technical field
The present invention relates to a kind of dispensing injector with pin tool, be specifically related to a kind of dispensing injector with pin of low liquor residue, belong to technical field of medical instruments.
Background technology
Commonly in the market make up a prescription, anesthesia and instrument used for injection, most syringes that adopt, syringe generally comprises syringe, syringe handle, piston rod and piston handle with piston. In the process of piston rod pumpback, in syringe, form negative pressure, thereby liquid is sucked to syringe; While pushing away before piston rod, piston is by medical liquid squeezing syringe. Consider the sealing of piston, on existing piston side wall, be provided with a circle seal convexity, increased the seal of piston and syringe. Therefore, some problems have been produced: 1, between seal convexity upper end and syringe, form space, cause syringe inner liquid medicine residual too much; 2, head face hump formula syringe, due to syringe head face hump, and forms space between piston, cause liquor residue; 3, in the joint pin of syringe front end connecting needle, space is larger, causes liquor residue. And regulation 10ml specification maximum residue limit is 0.20ml in GB25820-3002 syringe GB, the following maximum residue limit of 2ml specification is 0.07ml. Current dispensation injection needle on the market, can not meet the demands mostly.
Summary of the invention
The object of the invention is the dispensing injector with pin for a kind of low liquor residue is provided, to solve the problems referred to above of prior art.
The object of the invention is to be achieved through the following technical solutions.
A dispensing injector with pin for low liquor residue, comprises syringe assembly and piston component, and described syringe assembly comprises joint pin and the syringe handle of syringe main body, connecting needle; Described piston component comprises piston rod and the piston handle with piston; On described piston side wall, be provided with at least one circle sealing protruding stupefied; In the time that piston is pushed into top, the space forming between protruding stupefied, the piston upper surface of described sealing and syringe main body is liquid storing part; In described syringe main body, be provided with the portion that extrudes matching with liquid storing part shape, size and position.
It is one-body molded by mould when the described portion of extruding produces by syringe main body.
Described piston upper surface is also provided with extrudes bar, described in extrude bar and joint pin cavity shape, size and position match. So that the residual liquor in joint pin is extruded.
The present invention has following beneficial effect: 1,, by the improvement to syringe main body, be provided with the portion that extrudes matching with liquid storing part in syringe main body, can effectively the residual liquor of liquid storing part be extruded to syringe, reach the object of low-residual liquid; 2, by arranging and extrude bar on piston upper surface, realize the medical liquid squeezing syringe main body in joint pin, reach the object of low-residual liquid.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
In figure: 1, syringe main body 2, joint pin 3, piston 4, piston rod 5, seal protruding stupefied 6, liquid storing part 7, extrude portion 8, extrude bar.
Detailed description of the invention
Further set forth design feature of the present invention below in conjunction with accompanying drawing and specific embodiment.
The dispensing injector with pin of a kind of low liquor residue as shown in Figure 1, comprises syringe assembly and piston component, and described syringe assembly comprises joint pin 2 and the syringe handle of syringe main body 1, connecting needle; Described piston component comprises piston rod 4 and the piston handle with piston 3; On described piston 3 sidewalls, be provided with at least one circle sealing protruding stupefied 5; In the time that piston 3 is pushed into top, the space forming between protruding stupefied 5, piston 3 upper surfaces of described sealing and syringe main body 1 is liquid storing part 6; In described syringe main body 1, be provided with the portion that extrudes 7 matching with liquid storing part 6 shapes, size and position.
The described portion that extrudes 7 is one-body molded by mould in the time that syringe main body 1 is produced.
Described piston 3 upper surfaces are also provided with extrudes bar 7, described in extrude bar 7 and match with cavity shape, size and the position of joint pin 2. So that the residual liquor in joint pin 2 is extruded.
By the dispensing injector with pin after this architecture advances, the liquor residue amount of 2ml specification is less than or equal to 0.02ml; The liquor residue amount of 10ml specification is less than or equal to 0.05ml. The liquor residue amount of other each specifications all declines to a great extent, and at least declines 50%.

Claims (3)

1. a dispensing injector with pin for low liquor residue, comprises syringe assembly and piston component, and described syringe assembly comprises joint pin and the syringe handle of syringe main body, connecting needle; Described piston component comprises piston rod and the piston handle with piston; It is characterized in that: on described piston side wall, be provided with at least one circle sealing protruding stupefied; In the time that piston is pushed into top, the space forming between protruding stupefied, the piston upper surface of described sealing and syringe main body is liquid storing part; In described syringe main body, be provided with the portion that extrudes matching with liquid storing part shape, size and position.
2. the dispensing injector with pin of a kind of low liquor residue according to claim 1, is characterized in that: one-body molded by mould when the described portion of extruding produces by syringe main body.
3. the dispensing injector with pin of a kind of low liquor residue according to claim 1, is characterized in that: described piston upper surface is also provided with extrudes bar, described in extrude bar and joint pin cavity shape, size and position match. So that the residual liquor in joint pin is extruded.
CN201510915584.XA 2015-12-10 2015-12-10 Dispensing syringe with low residual medicine liquid Pending CN105597194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510915584.XA CN105597194A (en) 2015-12-10 2015-12-10 Dispensing syringe with low residual medicine liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510915584.XA CN105597194A (en) 2015-12-10 2015-12-10 Dispensing syringe with low residual medicine liquid

Publications (1)

Publication Number Publication Date
CN105597194A true CN105597194A (en) 2016-05-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510915584.XA Pending CN105597194A (en) 2015-12-10 2015-12-10 Dispensing syringe with low residual medicine liquid

Country Status (1)

Country Link
CN (1) CN105597194A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2172656Y (en) * 1993-07-17 1994-07-27 招远市医疗器械厂 Once-used sterile syringe
CN201030115Y (en) * 2007-05-21 2008-03-05 亓爱红 Medical syringe
CN201366149Y (en) * 2009-03-25 2009-12-23 深圳市安特高科实业有限公司 Syringe cylinder
CN204521828U (en) * 2015-03-16 2015-08-05 南安市广韵贸易有限公司 A kind of novel injector
CN205494565U (en) * 2015-12-10 2016-08-24 上海宝舜医疗器械有限公司 Low remaining syringe that dispenses of liquid medicine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2172656Y (en) * 1993-07-17 1994-07-27 招远市医疗器械厂 Once-used sterile syringe
CN201030115Y (en) * 2007-05-21 2008-03-05 亓爱红 Medical syringe
CN201366149Y (en) * 2009-03-25 2009-12-23 深圳市安特高科实业有限公司 Syringe cylinder
CN204521828U (en) * 2015-03-16 2015-08-05 南安市广韵贸易有限公司 A kind of novel injector
CN205494565U (en) * 2015-12-10 2016-08-24 上海宝舜医疗器械有限公司 Low remaining syringe that dispenses of liquid medicine

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Application publication date: 20160525

RJ01 Rejection of invention patent application after publication