CN102836485B - Self-destructive injector - Google Patents

Self-destructive injector Download PDF

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Publication number
CN102836485B
CN102836485B CN201210371462.5A CN201210371462A CN102836485B CN 102836485 B CN102836485 B CN 102836485B CN 201210371462 A CN201210371462 A CN 201210371462A CN 102836485 B CN102836485 B CN 102836485B
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China
Prior art keywords
pedestal
self
bar head
injection tube
mentioned
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Expired - Fee Related
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CN201210371462.5A
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Chinese (zh)
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CN102836485A (en
Inventor
徐雪花
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Ethan medical science and Technology (Shanghai) Co., Ltd.
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徐雪花
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Priority to CN201210371462.5A priority Critical patent/CN102836485B/en
Publication of CN102836485A publication Critical patent/CN102836485A/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides a self-destructive injector, which belongs to the technical field of medical appliances and is used for solving the problems of liquid medicament pollution and the like caused by self-destruction of the conventional injectors. The self-destructive injector comprises an injection cylinder, an injection rod, a rubber plug and a needle head base, wherein the rubber plug is fixedly connected to the front part of the injection rod; the needle head base is connected to the inner side of the front end of the injection cylinder; the front part of the injection rod is provided with a rod head passing through the rubber plug and extending out of the rubber plug; the needle head base comprises a cylindrical base body I and a cylindrical base body II; a needle head is arranged on the upper part of the base body I; the base body is fixedly connected to the lower part of the base body bi-axially; a clamping structure which can be used for fixedly connecting the base body II with the inner side of the front end of the injection cylinder axially is arranged between the base body II and the inner side of the front end of the injection cylinder; the base body I is fixed circumferentially with the inner side of the front end of the injection cylinder; and the inner side of the base body II is provided with a positioning part which can be fixed circumferentially with the rod head. The self-destructive injector has the advantages of simple structure, convenience in self-destruction and the like.

Description

A kind of self-destruction syringe
Technical field
The invention belongs to medical device technical field, relate to a kind of syringe, particularly a kind of self-destruction syringe.
Background technology
Current, syringe is the most frequently used, is also one of maximum medical apparatus and instruments of use amount.In recent years in order to control iatrogenic infectious disease, avoiding the adverse consequencess such as cross infection, generally using disposable sterilized injector.But existing disposable syringe remains intact still reusable and do not have safety device after all there is use, the defects such as the rear syringe needle of injection exposes, be subject to lawless person on the one hand utilize, to use later discarded disposable syringe to reuse without sterilization, this very easily causes propagation and the cross infection of virus; Outside syringe needle on the other hand after injection is still trapped in, relative to the acuity of syringe needle, be not only the carrying of syringe rubbish, destruction is made troubles, the thing of simultaneously stabbing medical personnel because of careless also often occurs, and just inevitably there will be the cross infection of pathogenic bacteria.
For this reason, people have devised various self-destruction syringe.At present, the using method on the market designed by most of safe self-breaking syringe, all can not be pushed into the zero line position of syringe scale before having injected by the piston tip before core bar.Because reaching zero line once shift the end onto, the self-desttruction equipment of this safe self-breaking syringe will be started, make doctor's material namely locked before not yet using, thus cause waste for no reason.
Its publication number of Chinese patent CN2855435Y provides one " syringe ", and it comprises an injection tube, needle unit and be arranged on this injection tube can be plugged in plunger unit in this injection tube with passing.This plunger unit has a rod member and and is nested in piston on this rod member, and this rod member is when being positioned at a normal injection position relative to this piston, a potential difference is produced between first dish portion and this piston diapire, when this rod member is positioned at a pressing position relative to this piston, this potential difference disappears, and the tenon of this rod member can knot embedding with this needle unit.Pull back by means of this plunger unit, this needle unit retraction injection tube can be driven inner, to reach the object of safe handling.Although it also can be unlikely to self-destruction when arriving zero line, when its injection behavior completes, when perform self-destruction action, when piston is pushed forward, the medicinal liquid that now needle stand interior forward end is unnecessary just can be extruded, and causes the pollution of medicinal liquid.
Other syringe existing also all also exists similar problem.
Summary of the invention
The object of the invention is the problems referred to above existed for prior art, provide a kind of structure simple, self-destruction is self-destruction syringe easily.
Object of the present invention realizes by following technical proposal: a kind of self-destruction syringe, comprise injection tube, injection rod, rubber stopper and needle holder, described rubber stopper is connected in injection rod front portion, above-mentioned needle holder is connected to the leading inside of described injection tube, the front portion of described injection rod has through rubber stopper and stretches out the bar head of rubber stopper, it is characterized in that, described needle holder comprises pedestal one cylindrically and pedestal two, above-mentioned pedestal one top is for installing syringe needle, above-mentioned pedestal two is axially connected in pedestal one bottom, there is between described pedestal two and injection tube leading inside the snap-in structure that both can be made axially to be connected, described pedestal one is fixing with injection tube leading inside circumference, there is inside described pedestal two location division can fixed with bar head circumference, when bar head is positioned at location division, bar head can drive pedestal two rotation that above-mentioned snap-in structure is departed from, can be connected on pedestal two after described bar head crosses location division.
In the normal use procedure of this self-destruction syringe, rubber stopper can get to bottom, does not have liquor residue like this in injection tube.
When needing self-destruction, dwang head, because when syringe gets to bottom, bar head crosses location division, pulls back and rotates injection rod when making bar head be positioned at location division and drive pedestal two to rotate relative to injection tube.Obviously, after rotating, snap-in structure departs from, and pedestal two can be moved up and down relative to injection tube.Continue to advance injection rod, bar head is connected on pedestal two after crossing location division.Now, drop-down injection rod, just can draw in injection tube by whole needle holder, realize self-destruction.
In above-mentioned self-destruction syringe, described pedestal two top has the connecting portion protruded ringwise, and described pedestal one bottom has the link slot matched with connecting portion, and above-mentioned connecting portion is in link slot.
Obviously, connecting portion is embedded in link slot, and such structure makes pedestal two can relative to pedestal one rotation, and both can realize axial restraint.
In above-mentioned self-destruction syringe, described snap-in structure comprises draw-in groove recessed along its circumference outside the plush copper and pedestal two protruded inside injection tube, and above-mentioned plush copper can embed in draw-in groove.
When plush copper embeds in draw-in groove, pedestal two just can not move up and down.
In above-mentioned self-destruction syringe, the quantity of described plush copper and draw-in groove is at least two, and plush copper symmetry be distributed in inside injection tube, being distributed in outside pedestal two of above-mentioned draw-in groove symmetry.
Such structure makes pedestal two and injection tube axial restraint more stable.
In above-mentioned self-destruction syringe, there is inside described injection tube the raised line one of some protrusions, have the raised line two of some protrusions outside described pedestal one, the spacing of above-mentioned raised line two between adjacent two raised lines one and between the width of raised line two and two raised lines one matches.
Raised line can make both circumferences fixing once being embedded between adjacent two raised lines two.Above-mentioned spacing dimension can not loosen after making both circumferences fixing.
In above-mentioned self-destruction syringe, described raised line one has the guide part one in tip-angled shape towards injection tube front end place, and described raised line two has the guide part two in tip-angled shape towards pedestal two place.
By guide part one, guide part two in assembling process, raised line one can embed between two adjacent raised lines two smoothly.
In above-mentioned self-destruction syringe, described location division comprises the slide block of some projections outside the stopper of the some projections inside pedestal two and described bar head, and slide block can be embedded between arbitrary neighborhood two stopper, crossing stopper rear bar head when slide block can relative to pedestal two rotation.
When slide block is positioned at stopper place, bar head can stir pedestal two rotation.When slide block crosses stopper rear bar head relative to pedestal two rotation, make slide block be overlapped on stopper top, finally make bar head be connected on pedestal two.
In above-mentioned self-destruction syringe, described stopper has the guide part three in tip-angled shape toward pedestal two bottom.
In like manner, the structure of guide part three makes the clicking section of bar head can be embedded in smoothly between adjacent two stop parts.
In above-mentioned self-destruction syringe, described slide block is L shape, comprises the bar portion in vertical bar shape and hook-shaped hook portion, and described hook portion width is greater than bar portion width, and the spacing between above-mentioned arbitrary neighborhood two stopper and hook portion width match.
When hook portion is between adjacent two stoppers, bar head and pedestal two secure fit, dwang head can drive pedestal two rotation smoothly.When hook portion crosses stopper, bar portion is resisted against on stopper, and now hook portion is just overlapped on stop part top, realizes bar head and is connected on pedestal two.
In above-mentioned self-destruction syringe, the shank that described injection rod comprises bar head and is connected with bar head, described shank comprises four lamellar bodies that are fixed together, and shank cross section is crosswise, and described shank has the reinforcement structure that can increase its intensity.
Because in self-destruction process, injection rod will rotate, increasing its intensity by strengthening structure, making can not bend in its rotation process.
In above-mentioned self-destruction syringe, described reinforcement structure comprises the reinforced sheet between adjacent two lamellar bodies of shank.
In above-mentioned self-destruction syringe, the same axial positions of described shank has four reinforced sheets, and four reinforced sheets form a reinforcement unit.
Obviously, such structure adds the torsional strength of injection rod.
In above-mentioned self-destruction syringe, described shank is axially evenly equipped with some reinforcement unit along it.Multiple reinforcement unit further add the torsional strength of whole injection rod.
Compared with prior art, this self-destruction syringe is mainly realized by rotation injection rod due to self-destruction, therefore, need not worry that injection rod fights to the finish and cause the problem of self-destruction maloperation in the normal use procedure of syringe.Obviously, it is easy to use.Meanwhile, pull injection rod just can draw in injection tube by whole needle holder again as long as oneself ruin in process to need to rotate after injection rod, realize self-destruction, self-destruction process is easy.
In addition, whole syringe is only made up of pedestal one, pedestal two, injection tube, injection rod etc., and its structure is simple, and cost is lower.
Accompanying drawing explanation
Fig. 1 is the structural representation of this self-destruction syringe.
Fig. 2 is the structural representation that in this self-destruction syringe, slide block is positioned at stopper place.
Fig. 3 is the structural representation that in this self-destruction syringe, slide block crosses stopper.
Fig. 4 is the partial structurtes schematic diagram of injection tube in this self-destruction syringe.
Fig. 5 is the plan structure schematic diagram along Fig. 4.
Fig. 6 is injection tube other direction partial structurtes schematic diagram in this self-destruction syringe.
Fig. 7 is the plan structure schematic diagram along Fig. 6.
Fig. 8 is the structural representation of injection rod in this self-destruction syringe.
Fig. 9 is the structural representation at this self-destruction syringe king-rod head place.
Figure 10 is the structural representation of pedestal two in this self-destruction syringe.
Figure 11 is the structural representation of pedestal two other direction in this self-destruction syringe.
Figure 12 is the sectional structure schematic diagram of pedestal two in this self-destruction syringe.
Figure 13 is the structural representation that in this self-destruction syringe, pedestal two is connected with pedestal one.
Figure 14 is that this self-destruction syringe injection rod is got to bottom and is not in the structural representation of self-destruction state.
Figure 15 is that in this self-destruction syringe, injection rod retreats a little and is not in the structural representation of self-destruction state.
Figure 16 is the view that in this self-destruction syringe, snap-in structure departs from.
Figure 17 is the structural representation after the complete self-destruction of this self-destruction syringe.
In figure, 1, injection tube; 1a, raised line one; 1a1, guide part one; 1b, plush copper; 2, injection rod; 3, rubber stopper; 4, pedestal one; 4a, raised line two; 4a1, guide part two; 4b, link slot; 5, pedestal two; 5a, connecting portion; 5b, draw-in groove; 5c, stopper; 5c1, guide part three; 6, bar head; 6a, slide block; 6a1, bar portion; 6a2, hook portion; 7, shank; 7a, lamellar body; 8, reinforced sheet.
Detailed description of the invention
As shown in Figure 1 and Figure 2 and Figure 3, this self-destruction syringe comprises injection tube 1, injection rod 2, rubber stopper 3 and needle holder.It is anterior that rubber stopper 3 is connected in injection rod 2, and needle holder is connected to the leading inside of injection tube 1, and the front portion of injection rod 2 has through rubber stopper 3 and stretches out the bar head 6 of rubber stopper 3.
Needle holder comprises pedestal 1 cylindrically and pedestal 25, and pedestal 1 top is for installing syringe needle, and pedestal 25 is axially connected in pedestal 1 bottom.
As shown in Fig. 4 and Fig. 5 and Fig. 6 and Fig. 7, there are inside injection tube 1 four raised line one 1a protruded, there are outside pedestal 1 four raised line two 4a protruded, the spacing of raised line two 4a between adjacent two raised line one 1a and between the width of raised line two 4a and two raised line one 1a matches, and makes pedestal 1 fixing with injection tube 1 leading inside circumference by raised line one 1a with coordinating of raised line two 4a.Raised line one 1a has guide part one 1a1 in tip-angled shape towards injection tube 1 front end place, raised line two 4a has guide part two 4a1 in tip-angled shape towards pedestal 25 place.
As shown in Figure 10-Figure 13, pedestal 25 top has the connecting portion 5a protruded ringwise, pedestal 1 bottom has the link slot 4b matched with connecting portion 5a, connecting portion 5a is positioned at link slot 4b, by such structure, pedestal 25 can be rotated relative to pedestal 1, that is make both axial restraints.
There is between pedestal 25 and injection tube 1 leading inside the snap-in structure that both can be made axially to be connected.Snap-in structure comprises draw-in groove 5b recessed along its circumference outside the plush copper 1b and pedestal 25 that protrude inside injection tube 1, and plush copper 1b can embed in draw-in groove 5b.The quantity of plush copper 1b and draw-in groove 5b is all four, and plush copper 1b symmetry be distributed in inside injection tube 1, being distributed in outside pedestal 25 of draw-in groove 5b symmetry.
As shown in Figure 9, have location division inside pedestal 25, when bar head 6 is positioned at location division, bar head 6 can drive pedestal 25 to rotate and make above-mentioned snap-in structure disengaging, when being connected on pedestal 25 after bar head 6 crosses location division.
Location division comprises the slide block 6a of some projections outside the stopper 5c of the some projections inside pedestal 25 and bar head 6, and slide block 6a can be embedded between arbitrary neighborhood two stopper 5c, can rotate relative to pedestal 25 when slide block 6a crosses stopper 5c rear bar 6.Stopper 5c has guide part three 5c1 in tip-angled shape toward pedestal 25 bottom.In the present embodiment, slide block 6a is L shape, and it comprises bar portion 6a1 in vertical bar shape and hook-shaped hook portion 6a2, hook portion 6a2 width is greater than bar portion 6a1 width, and the spacing between arbitrary neighborhood two stopper 5c and hook portion 6a2 width match.
As shown in Figure 14 and Figure 15, promote injection rod 2 in the normal use procedure of self-destruction syringe and carry out injecting liquid drug.Because the clicking section 6a of bar head 6 crosses the stop part 5c inside pedestal 25 when rubber stopper 3 gets to bottom.Even if now rotate injection rod 2, because the clicking section 6a of bar head 6 is not stopped, be also now the idle running of injection rod 2.Therefore, there will not be self-destruction maloperation, do not have liquor residue in injection tube 1 so simultaneously.
As shown in Figure 16 and Figure 17, when needing self-destruction, injection rod 2 of pulling back, between the stopper 5c that the slide block 6a on bar head 6 is embedded in inside pedestal 25.Now, bar head 6 is fixing with pedestal 25 circumference, drives pedestal 25 to rotate by bar head 6, and the draw-in groove 5b on pedestal 25 departs from plush copper 1b inside injection tube 1, and the axial restraint between pedestal 25 and injection tube 1 is removed.Continue to advance injection rod 2, make the hook portion 6a2 of clicking section 6a cross stopper 5c, bar portion 6a1 is resisted against on stopper 5c, and now hook portion 6a2 is just overlapped on stop part 5c top, realizes bar head 6 and is connected on pedestal 25.Now, drop-down injection rod, just can draw in injection tube by whole needle holder, realize self-destruction.In this process, when bar portion 6a1 is resisted against stopper 5c, injection rod 2 cannot be rotated further, and now tells that operator's signal can carry out self-destruction by drop-down injection rod.
As shown in Figure 8, the shank 7 that injection rod 2 comprises bar head 6 and is connected with bar head 6, shank 7 comprises four lamellar body 7a that are fixed together, and shank 7 cross section is crosswise.Because injection rod during self-destruction 2 needs to rotate, therefore, be provided with the reinforcement structure that can increase its intensity at shank 7.Reinforcement structure comprises the reinforced sheet 8 between the adjacent two lamellar body 7a of shank 7.The same axial positions of shank 7 has four reinforced sheets 8, and four reinforced sheets form a reinforcement unit.Shank 7 is axially evenly equipped with three along it and strengthens unit.

Claims (8)

1. a self-destruction syringe, comprise injection tube (1), injection rod (2), rubber stopper (3) and needle holder, it is anterior that described rubber stopper (3) is connected in injection rod (2), above-mentioned needle holder is connected to the leading inside of described injection tube (1), the front portion of described injection rod (2) has through rubber stopper (3) and stretches out the bar head (6) of rubber stopper (3), it is characterized in that, described needle holder comprises pedestal one (4) cylindrically and pedestal two (5), above-mentioned pedestal one (4) top is for installing syringe needle, above-mentioned pedestal two (5) is axially connected in pedestal one (4) bottom, there is between described pedestal two (5) and injection tube (1) leading inside the snap-in structure that both can be made axially to be connected, described pedestal one (4) is fixing with injection tube (1) leading inside circumference, described pedestal two (5) inner side has location division that can be fixing with bar head (6) circumference, when bar head (6) is positioned at location division, bar head (6) can drive pedestal two (5) to rotate and make above-mentioned snap-in structure disengaging, can be connected to after described bar head (6) crosses location division on pedestal two (5), described pedestal two (5) top has the connecting portion (5a) protruded ringwise, described pedestal one (4) bottom has the link slot (4b) matched with connecting portion (5a), above-mentioned connecting portion (5a) is positioned at link slot (4b), described location division comprises the slide block (6a) of the some projections of stopper (5c) and described bar head (6) outside of some projections of pedestal two (5) inner side, and slide block (6a) can be embedded between arbitrary neighborhood two stopper (5c), cross stopper (5c) rear bar head (6) when slide block (6a) to rotate relative to pedestal two (5).
2. self-destruction syringe according to claim 1, it is characterized in that, described snap-in structure comprise injection tube (1) inner side protrude plush copper (1b) and pedestal two (5) outside along its circumference be recessed into draw-in groove (5b), above-mentioned plush copper (1b) can embed in draw-in groove (5b).
3. self-destruction syringe according to claim 2, it is characterized in that, the quantity of described plush copper (1b) and draw-in groove (5b) is at least two, and plush copper (1b) symmetrical be distributed in injection tube (1) inner side, what above-mentioned draw-in groove (5b) was symmetrical is distributed in pedestal two (5) outside.
4. the self-destruction syringe according to claim 1 or 2 or 3, it is characterized in that, described injection tube (1) inner side has the raised line one (1a) of some protrusions, described pedestal one (4) outside has the raised line two (4a) of some protrusions, and above-mentioned raised line two (4a) is positioned between adjacent two raised lines one (1a) and spacing between the width of raised line two (4a) and two raised lines one (1a) matches.
5. self-destruction syringe according to claim 4, it is characterized in that, described raised line one (1a) has the guide part one (1a1) in tip-angled shape towards injection tube (1) front end place, described raised line two (4a) has the guide part two (4a1) in tip-angled shape towards pedestal two (5) place.
6. the self-destruction syringe according to claim 1 or 2 or 3, is characterized in that, described stopper (5c) has the guide part three (5c1) in tip-angled shape toward pedestal two (5) bottom.
7. the self-destruction syringe according to claim 1 or 2 or 3, it is characterized in that, described slide block (6a) is in L shape, comprise the bar portion (6a1) in vertical bar shape and hook-shaped hook portion (6a2), described hook portion (6a2) width is greater than bar portion (6a1) width, and the spacing between above-mentioned arbitrary neighborhood two stopper (5c) and hook portion (6a2) width match.
8. the self-destruction syringe according to claim 1 or 2 or 3, it is characterized in that, the shank (7) that described injection rod (2) comprises bar head (6) and is connected with bar head (6), described shank (7) comprises four lamellar bodies that are fixed together (7a), shank (7) cross section is crosswise, described shank (7) has the reinforcement structure that can increase its intensity, described reinforcement structure comprises the reinforced sheet (8) be positioned between adjacent two lamellar bodies (7a) of shank (7), described shank (7) same axial positions has four reinforced sheets (8), and four reinforced sheets (8) form a reinforcement unit, described shank (7) is axially evenly equipped with some reinforcement unit along it.
CN201210371462.5A 2012-09-28 2012-09-28 Self-destructive injector Expired - Fee Related CN102836485B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN102836485B true CN102836485B (en) 2015-02-25

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104014060A (en) * 2014-06-18 2014-09-03 宁波圣宇瑞医疗器械有限公司 Atomizer and atomization device
CN107982586B (en) * 2017-12-27 2024-01-09 西安市第一医院 Self-locking type negative pressure suction syringe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW359621B (en) * 1998-04-10 1999-06-01 Wen-Neng Liu Safe injector with injection needle pull-back this invention provides a safe injector with injection needle pull-back which comprises: a needle cylinder, a plunger and an injection needle
TWI243065B (en) * 2004-06-11 2005-11-11 Ming-Jeng Shiu Injector with a retractable needle body
CN100425303C (en) * 2006-01-12 2008-10-15 林作钱 Safe self-destruction syringe for medical purpose
CN200973886Y (en) * 2006-11-20 2007-11-14 骆忠林 Syringe
CN201213945Y (en) * 2008-03-28 2009-04-01 张淑茗 Needle retraction type safety injector
CN201320334Y (en) * 2008-12-18 2009-10-07 徐家华 Return type safe self-destroying syringe
CN101898002B (en) * 2009-05-26 2012-06-13 张淑茗 Retraction structure of safety syringe
CN201987995U (en) * 2010-12-29 2011-09-28 上海康德莱企业发展集团股份有限公司 Push rod structure of self-destroying injector
CN102652849B (en) * 2011-03-02 2013-12-25 张淑茗 Needle base assembly rotating and retracting structure of safety injector

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Effective date of registration: 20170629

Address after: 200082, No. 107, 109, 128, 111 and 112, building 10, Xiang Yin Road, Shanghai, Yangpu District

Patentee after: Ethan medical science and Technology (Shanghai) Co., Ltd.

Address before: Taizhou City, Zhejiang Province, 317605 West Street, Yuhuan County Town, No. 64 Truman

Patentee before: Xu Xuehua

CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20150225

Termination date: 20170928