CN100382857C - Clamp spring type safe injector - Google Patents

Clamp spring type safe injector Download PDF

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Publication number
CN100382857C
CN100382857C CNB2004100536918A CN200410053691A CN100382857C CN 100382857 C CN100382857 C CN 100382857C CN B2004100536918 A CNB2004100536918 A CN B2004100536918A CN 200410053691 A CN200410053691 A CN 200410053691A CN 100382857 C CN100382857 C CN 100382857C
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CN
China
Prior art keywords
pulling back
core bar
joint pin
syringe
needle holder
Prior art date
Application number
CNB2004100536918A
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Chinese (zh)
Other versions
CN1733324A (en
Inventor
邱灿龙
Original Assignee
上海麦得可医疗器械销售有限公司
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Publication date
Application filed by 上海麦得可医疗器械销售有限公司 filed Critical 上海麦得可医疗器械销售有限公司
Priority to CNB2004100536918A priority Critical patent/CN100382857C/en
Publication of CN1733324A publication Critical patent/CN1733324A/en
Application granted granted Critical
Publication of CN100382857C publication Critical patent/CN100382857C/en

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Abstract

The present invention discloses a clamp spring type safe injector which is distinguished from the prior art that the front end of a piston is provided with a small hole, and a reverse drawing connection column is fixedly connected with the top end of a core bar is arranged in the small hole; the reverse drawing connection column is transversally provided with a groove at the part adjacent to the top end, and a reverse drawing piece is arranged in the groove. The present invention breaks traditional design concept of the syringe, uses novel reverse drawing connection structure, and uses metal line-shaped body with simple structure or metal piece-shaped body with simple structure to replace the original metal reverse hook. The present invention effectively reduces technical difficulty, reduces technological steps, shortens process time, improves production efficiency and effectively controls production cost, and the reverse drawing structure design is reasonable, accurate and practical. The present invention has the advantages of reasonable structural design, high safety, low technology manufacturing difficulty, few processes, cost saving, easy production and easy popularization.

Description

A kind of circlip type safety injector

Technical field:

The present invention relates to technical field of medical, specifically a kind of pull back safety injector of structure of needle holder that has.

Background technology:

There are a lot of medical personnel and Biohazard Waste treatment people in all parts of the world, because of dealing with improperly of syringe, cause often being stabbed by syringe needle, and then infect as: the disease that blood sexuality such as AISD, hepatitis B, pulmonary tuberculosis (TB), acquired immune deficiency syndrome (AIDS) are dyed.

China causes the death cases number up to 390,000 examples because of dangerous injection every year according to statistics, causes the loss in 6,890,000 years in life-span, and direct medical cost is up to 1.42 hundred million dollars, and the whole world causes the death cases number up to 1,300,000 examples because of dangerous injection every year.

Dangerous injection is meant accepting the unsafe injection system of injector, medical personnel and public environment, comprise that specifically to reuse disposable syringe, sterile working's disappearance, needle sharing and offal treatment improper etc., for fear of the generation of above-mentioned incident, on the market various safety injectors have appearred now.

Generation for fear of above-mentioned this type of incident, having occurred some in the market is arranged on needle holder in the neck, after use, needle holder can be drawn in the safety injector of syringe, the basic project organization of existing this class safety injector is to add a metal hook in the core bar piston nose, after finishing, injection can needle holder be drawn rearward in the syringe by metal hook, to reach security purpose, but there is certain shortcoming in its project organization, 1, simple metal hook structure fault rate in use is very high, poor stability when using in batch, effect is not very desirable in actual use, 2, the structure of this type of Metallic hook is meticulous, and the manufacturing process difficulty is big, and is higher to material requirements, cause the raising of production cost, but also cause the appearance of some products of inferior quality on the market easily.

Summary of the invention:

The object of the present invention is to provide a kind of circlip type safety injector, it is simple and reasonable, and manufacturing process is simple, and processing step is few, can effectively control cost, and the product stability in use is higher, has overcome some shortcomings of the prior art.

To achieve these goals, technical scheme of the present invention is a kind of circlip type safety injector, it mainly comprises syringe, is arranged on the core bar in the syringe, is socketed in the piston of core bar front end, the needle holder that matches with syringe, syringe needle, it is characterized in that: described piston nose is provided with aperture, is provided with the joint pin of pulling back in the aperture, and the joint pin of pulling back is fixedlyed connected with the core bar top, the joint pin of pulling back laterally is provided with groove near top end, is provided with the connector of pulling back in the groove.

The break traditions design concept of syringe of the present invention, adopt the novel syndeton of pulling back, replace original metal barb with wire-like body simple in structure or Metal Flake body, effectively reduce producting process difficulty, reduce processing step, shorten activity time, enhance productivity, effectively control production cost, pull back reasonable in design, practicality, the advantage of this product is: reasonable in design, safe, the manufacturing process difficulty is low, operation is few, save cost, be easy to produce, be easy to promote.

Description of drawings:

Fig. 1 is a structural representation of the present invention

Fig. 2 is the present invention's joint pin structural representation of pulling back

Fig. 3 is the present invention's joint pin side view of pulling back

Fig. 4 is the first embodiment of the invention structural representation

Structural representation when Fig. 5 finishes for the first embodiment of the invention injection

Structural representation when Fig. 6 pulls back core bar for first embodiment of the invention

Fig. 7 is the second embodiment of the invention structural representation

Fig. 8 is the third embodiment of the invention structural representation

Among the figure: 1 syringe, 2 core bars, 3 needle holder, 4 syringe needles 5 joint pin of pulling back

6 connector 7 pistons 8 grooves 9 slopes of pulling back

The specific embodiment:

Below in conjunction with drawings and Examples the present invention is further described.

As Fig. 1, Fig. 2, shown in Fig. 3: the present invention mainly comprises syringe 1, be arranged on the core bar 2 in the syringe, be socketed in the piston 7 of core bar front end, the needle holder 3 that matches with syringe, syringe needle 4, it is different from prior art and is: described piston nose is provided with aperture, be provided with the joint pin 5 of pulling back in the aperture, the joint pin of pulling back is fixedlyed connected with the core bar top, the joint pin of pulling back laterally is provided with groove 8 near top end, be provided with the connector 6 of pulling back in the groove, pull back the diameter of section of joint pin less than the needle holder intracavity diameter, the cylinder place, following both sides of groove is provided with symmetrical slope 9, the width of slope is less than the diameter of the joint pin of pulling back, form an angle between two slopes, the angle of angle is spent between 60 degree 5, such structural design connector stress deformation of can conveniently pulling back, the connector of pulling back can be the wire-like body, its shape can be in-line, the U font, reverse U shape, the connector of pulling back also can be Metal Flake body, its shape can be in-line, the U font, reverse U shape, and the equal spinosity point in the two ends of Metal Flake body, anterior in the specific implementation syringe needle can be designed to two kinds of interchangeable and not interchangeable formulas.

In first embodiment of the invention; as shown in Figure 4; the syringe of a 3ml; needle holder adopts embedded; be that needle holder is arranged in the tube neck of syringe top; design has hermetically-sealed construction between needle holder and the tube neck; prevent that leakage from taking place; needle holder is not interchangeable; this structure is a prior art; not within the claimed scope of the present invention; therefore be not further described; the core bar front end is fixed with the joint pin of pulling back; the joint pin of pulling back laterally is provided with groove near top end; be provided with the connector of pulling back in the groove; the connector of pulling back is the wire-like body; be shaped as in-line; the cylinder place, following both sides of groove is provided with symmetrical slope; the width of slope is less than the diameter of the joint pin of pulling back; the angle of two slopes is 50 degree; promote core bar during use forward; under the effect of piston; injection flows out through syringe needle; the diameter of section of joint pin is less than the needle holder intracavity diameter owing to pull back; after core bar is shifted certain depth onto; the front end of joint pin of pulling back can enter the needle holder inner chamber; at this moment promote core bar more forward; pull back the width of connector greater than the needle holder inner chamber; touch the active force that can be subjected to extension under the needle holder after the needle holder; in-line wire-like cognition is bent downwardly distortion under the effect of this burst power; become the inverted U-shaped needle holder inner chamber that enters; when core bar stops to promote; promptly the injection finish after as shown in Figure 5; pull back core bar; connector is a metal material owing to pull back; be subjected to compressing power again and be deformed into the shape of falling U; can produce outside tension force to the needle holder inwall under the nature situation; at this moment spur core bar downwards; core bar drives the joint pin of pulling back of upper end; two tips penetrate the needle holder inwall deeply about the in-line wire-like body of feasible distortion back; firmly be stuck in the needle holder; when drawing core bar, needle holder is also pulled back; finally draw in the syringe; as shown in Figure 6, prevent that effectively the medical worker from being accidentally injured by syringe needle and cause infecting, and reaches the purpose of safety injection.

In second embodiment of the invention, as shown in Figure 7, the syringe of a 5ml, needle holder adopts embedded exchangeable needle formula structure, be that needle holder is socketed on the cylinder connector, this connects the cylinder connector and is arranged in the neck, in use can change the syringe needle of different size according to actual needs, this structure is a prior art, be not described in detail at this, in the present embodiment, the core bar front end is fixed with the joint pin of pulling back, the joint pin of pulling back laterally is provided with groove near top end, be provided with the connector of pulling back in the groove, the connector of pulling back is the wire-like body, be shaped as reverse U shape, the cylinder place, following both sides of groove is provided with symmetrical slope, the width of slope is less than the diameter of the joint pin of pulling back, the angle of two slopes is 40 degree, promote core bar during use forward, under the effect of piston, injection flows out through syringe needle, the diameter of section of joint pin is less than the needle holder intracavity diameter owing to pull back, after core bar is shifted certain depth onto, the front end of joint pin of pulling back can enter the needle holder inner chamber, at this moment promote core bar more forward, the reverse U shape metal is pulled back the width of connector greater than the needle holder inner chamber, touch the active force that can be subjected to extension under the needle holder after the needle holder, the reverse U shape wire-like is known from experience inside crimp under the effect of this burst power, be easy to just can enter the needle holder inner chamber, when core bar stops to promote, after promptly injection is finished, pull back core bar, because the reverse U shape connector of pulling back is a metal material, be subjected to the external force extruding again and be out of shape, can produce outside tension force to the needle holder inwall under the natural situation, this is to spur core bar downwards, core bar drives the joint pin of pulling back of upper end, makes two tips of distortion back reverse U shape wire-like body penetrate the needle holder inwall deeply, when drawing core bar needle holder is also pulled back, finally draw in the syringe, reach the purpose of safety injection.

In third embodiment of the invention, as shown in Figure 8, the syringe of a 3ml, needle holder adopts embedded not interchangeable needle holder structure, the core bar front end is fixed with the joint pin of pulling back, the joint pin of pulling back laterally is provided with groove near top end, be provided with the connector of pulling back in the groove, the connector of pulling back is Metal Flake body, be shaped as the U font, the cylinder place, following both sides of groove is provided with symmetrical slope, the width of slope is less than the diameter of the joint pin of pulling back, the angle of two slopes is 25 degree, promote core bar during use forward, under the effect of piston, injection flows out through syringe needle, the diameter of section of joint pin is less than the needle holder intracavity diameter owing to pull back, after core bar is shifted certain depth onto, the front end of joint pin of pulling back can enter the needle holder inner chamber, at this moment promote core bar more forward, U font metal is pulled back the width of connector greater than the needle holder inner chamber, touch the active force that can be subjected to extension under the needle holder after the needle holder, the Metal Flake cognition of U font is bent downwardly and is deformed into the shape of falling U under the effect of this burst power, be easy to so just can enter the needle holder inner chamber, when core bar stops to promote, after promptly injection is finished, pull back core bar, because the reverse U shape connector of pulling back is a metal material, be subjected to the external force extruding again and be out of shape, can produce outside tension force to the needle holder inwall under the natural situation, this is to spur core bar downwards, core bar drives the joint pin of pulling back of upper end, makes two tips of the Metal Flake body of distortion back reverse U shape penetrate the needle holder inwall deeply, when drawing core bar needle holder is also pulled back, finally draw in the syringe, reach the purpose of safety injection.

In fourth embodiment of the invention, the syringe of a 5ml, adopt embedded exchangeable needle holder structure, the core bar front end is fixed with the joint pin of pulling back, the joint pin of pulling back laterally is provided with groove near top end, be provided with the connector of pulling back in the groove, the connector of pulling back is Metal Flake body, be shaped as in-line, the cylinder place, following both sides of groove is provided with symmetrical slope, the width of slope is less than the diameter of the joint pin of pulling back, the angle of two slopes is 15 degree, promote core bar during use forward, under the effect of piston, injection flows out through syringe needle, the diameter of section of joint pin is less than the needle holder intracavity diameter owing to pull back, after core bar is shifted certain depth onto, the front end of joint pin of pulling back can enter the needle holder inner chamber, at this moment promote core bar more forward, the in-line metal is pulled back the width of connector greater than the needle holder inner chamber, touch the active force that can be subjected to extension under the needle holder after the needle holder, the Metal Flake cognition of in-line is bent downwardly distortion under the effect of this burst power, the Metal Flake body of in-line after the distortion is easy to just enter the needle holder inner chamber, when core bar stops to promote, after promptly injection is finished, pull back core bar, connector is a metal material owing to pull back, be subjected to compressing power again and be deformed into the shape of falling U, can produce outside tension force to the needle holder inwall under the natural situation, this is to spur core bar downwards, core bar drives the joint pin of pulling back of upper end, the thorn point of the front end of the Metal Flake body of feasible distortion back in-line penetrates the needle holder inwall deeply, is stuck in firmly in the needle holder cavity, when drawing core bar needle holder is also pulled back, finally draw in the syringe, reach the purpose of safety injection.

Claims (5)

1. circlip type safety injector, it comprises that syringe (1) is arranged on the core bar (2) in the syringe, be socketed in the piston (7) of core bar front end, the needle holder that matches with syringe (3), syringe needle (4) is characterized in that: described piston nose is provided with aperture, be provided with the joint pin of pulling back (5) in the aperture, the joint pin of pulling back is fixedlyed connected with the core bar top, and the joint pin of pulling back laterally is provided with groove (8) near top end, is provided with the connector of pulling back (6) in the groove.
2. by the described a kind of circlip type safety injector of claim 1, it is characterized in that: the cylinder place, following both sides of groove is provided with symmetrical slope (9), the width of slope forms an angle between the slope less than the diameter of the joint pin of pulling back, and the angle of angle is spent between 60 degree 5.
3. by the described a kind of circlip type safety injector of claim 1, it is characterized in that: the connector of pulling back (6) can be the wire-like body, and its shape can be in-line, U font, reverse U shape.
4. by the described a kind of circlip type safety injector of claim 1, it is characterized in that: the connector of pulling back (6) can be Metal Flake body, and its shape can be in-line, U font, reverse U shape, and the equal spinosity point in the two ends of Metal Flake body.
5. by the described a kind of circlip type safety injector of claim 1, it is characterized in that: the diameter of section of the joint pin of pulling back (5) is less than the needle holder intracavity diameter.
CNB2004100536918A 2004-08-12 2004-08-12 Clamp spring type safe injector CN100382857C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2004100536918A CN100382857C (en) 2004-08-12 2004-08-12 Clamp spring type safe injector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2004100536918A CN100382857C (en) 2004-08-12 2004-08-12 Clamp spring type safe injector
AU2004101074A AU2004101074A4 (en) 2004-08-12 2004-12-17 Safety syringe with needle hub retracting mechanism

Publications (2)

Publication Number Publication Date
CN1733324A CN1733324A (en) 2006-02-15
CN100382857C true CN100382857C (en) 2008-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2004100536918A CN100382857C (en) 2004-08-12 2004-08-12 Clamp spring type safe injector

Country Status (2)

Country Link
CN (1) CN100382857C (en)
AU (1) AU2004101074A4 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2448384Y (en) * 2000-11-22 2001-09-19 沈挺 Safety syringe capable of being destroyed while drawing back
CN2528460Y (en) * 2002-04-01 2003-01-01 沈挺 Safety syringe capable of changing needle
US6613016B1 (en) * 2003-01-21 2003-09-02 Jen Chuan Ku Safety hypodermic syringe
CN2714073Y (en) * 2004-08-12 2005-08-03 上海特杰德医疗科技有限公司 Snap spring type safe syringe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2448384Y (en) * 2000-11-22 2001-09-19 沈挺 Safety syringe capable of being destroyed while drawing back
CN2528460Y (en) * 2002-04-01 2003-01-01 沈挺 Safety syringe capable of changing needle
US6613016B1 (en) * 2003-01-21 2003-09-02 Jen Chuan Ku Safety hypodermic syringe
CN2714073Y (en) * 2004-08-12 2005-08-03 上海特杰德医疗科技有限公司 Snap spring type safe syringe

Also Published As

Publication number Publication date
CN1733324A (en) 2006-02-15
AU2004101074A4 (en) 2005-02-03

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PB01 Publication
C06 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20080111

Address after: Shanghai city Changning District Anlong Road No. 843 Room 606 post encoding: 200336

Applicant after: Shanghai Maideke Medical Machinery Sale Co., Ltd.

Address before: Shanghai city Changning District Anlong Road No. 843 room 409 post encoding: 200336

Applicant before: Shanghai Tejiede Medical Technology Co., Ltd.

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: SHANGHAI MAIDEKE MEDICAL DEVICES MAY BE CO., LTD.

Free format text: FORMER OWNER: TEJIEDE MEDICAL SCI. + TECH. CO., LTD., SHANGHAI

Effective date: 20080111

GR01 Patent grant
C14 Grant of patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: Chengdu Shuangliu Shuanglu Medical Apparatus & Instruments Co., Ltd.

Assignor: Shanghai Maideke Medical Machinery Sale Co., Ltd.

Contract fulfillment period: 2008.12.1 to 2013.11.30 contract change

Contract record no.: 2009510000095

Denomination of invention: Clamp spring type safe injector

Granted publication date: 20080423

License type: Exclusive license

Record date: 2009.9.30

Assignee: Chengdu Shuangliu Shuanglu Medical Apparatus & Instruments Co., Ltd.

Assignor: Shanghai Maideke Medical Machinery Sale Co., Ltd.

Contract fulfillment period: 2008.12.1 to 2013.11.30

Contract record no.: 2009510000095

Denomination of invention: Clamp spring type safe injector

Granted publication date: 20080423

License type: Exclusive license

Record date: 2009.9.30

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.1 TO 2013.11.30; CHANGE OF CONTRACT

Name of requester: CHENGDU CITY SHUANGLIU SHUANGLU MEDICAL APPARATUS

Effective date: 20090930

EC01 Cancellation of recordation of patent licensing contract

Assignee: Chengdu Shuangliu Shuanglu Medical Apparatus & Instruments Co., Ltd.

Assignor: Shanghai Maideke Medical Machinery Sale Co., Ltd.

Contract record no.: 2009510000095

Date of cancellation: 20100510

Assignee: Chengdu Shuangliu Shuanglu Medical Apparatus & Instruments Co., Ltd.

Assignor: Shanghai Maideke Medical Machinery Sale Co., Ltd.

Contract record no.: 2009510000095

Date of cancellation: 20100510

DD01 Delivery of document by public notice

Addressee: Shanghai Maideke Medical Machinery Sale Co., Ltd.|Zhou Wanwen

Document name: Notification to Pay the Fees

Addressee: Shanghai Maideke Medical Machinery Sale Co., Ltd.|Zhou Wanwen

Document name: Notification to Pay the Fees

DD01 Delivery of document by public notice

Addressee: Shanghai Maideke Medical Machinery Sale Co., Ltd.|Zhou Wanwen

Document name: Notification of Termination of Patent Right

Addressee: Shanghai Maideke Medical Machinery Sale Co., Ltd.|Zhou Wanwen

Document name: Notification of Termination of Patent Right

TR01 Transfer of patent right

Effective date of registration: 20160121

Address after: 610212 Renhe Road, hi tech Zone, Chengdu, Sichuan

Patentee after: Sichuan Shuanglu Medical Equipment Co. Ltd

Address before: 200336, room 31, 402 Shuangliu Road, Shanghai, Changning District

Patentee before: Shanghai Maideke Medical Machinery Sale Co., Ltd.

Effective date of registration: 20160121

Address after: 610212 Renhe Road, hi tech Zone, Chengdu, Sichuan

Patentee after: Sichuan Shuanglu Medical Equipment Co. Ltd

Address before: 200336, room 31, 402 Shuangliu Road, Shanghai, Changning District

Patentee before: Shanghai Maideke Medical Machinery Sale Co., Ltd.

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data
CB03 Change of inventor or designer information

Inventor after: Lu Panzhong

Inventor before: Qiu Canlong

Inventor after: Lu Panzhong

Inventor before: Qiu Canlong

CP02 Change in the address of a patent holder
CP02 Change in the address of a patent holder

Address after: 620500 Xingyuan Road, Renshou Shigao Economic Development Zone, Tianfu New District, Chengdu City, Sichuan Province

Patentee after: Sichuan Shuanglu Medical Equipment Co. Ltd

Address before: 610212 Renhe Road, hi tech Zone, Chengdu, Sichuan

Patentee before: Sichuan Shuanglu Medical Equipment Co. Ltd