CN201862083U - Disposable self-destroying medical syringe - Google Patents
Disposable self-destroying medical syringe Download PDFInfo
- Publication number
- CN201862083U CN201862083U CN2010200011817U CN201020001181U CN201862083U CN 201862083 U CN201862083 U CN 201862083U CN 2010200011817 U CN2010200011817 U CN 2010200011817U CN 201020001181 U CN201020001181 U CN 201020001181U CN 201862083 U CN201862083 U CN 201862083U
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- CN
- China
- Prior art keywords
- push rod
- syringe
- locating part
- self
- tooth
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a disposable self-destroying medical syringe which consists of a stainless steel syringe needle tube (50), a needle cylinder (40) with two spacing rings, a rubber stopper (30), a push rod (20) and a toothed spacing piece (10) of same material, wherein the push rod (20) is provided with a toothed rib, and the tail of the push rod (20) is provided with a hole (27). The disposable self-destroying medical syringe is characterized in that: 1. the push rod and the rubber stopper are provided with a free moving section; in the moving section, a user can dissolve drug or exhaust; and 2. after injection at the labeled content being less than or equal to 30%, the rib on the push rod is meshed with the toothed spacing piece, and a safe self-destroying device begins to start; the push rod and the rubber stopper can not be pulled back, and the user is forced to use the syringe at one time; even if a person wants to devastatingly reuse the syringe, the punching position on the push rod can be broken under the strong external force, but the rib on the push rod can continuously be meshed with the toothed spacing piece to prevent the syringe from being reused more safely; therefore, the self-destroying medical syringe is really disposable.
Description
Technical field:
The present invention relates to a kind of device that subcutaneous injection, intramuscular injection or intravenous injection are main purpose that is used for, belong to medical apparatus and instruments.Its starting point is for avoiding this apparatus to be had a mind to or be not intended to by some people reuse.
Technical background:
Along with to more and more stricter such as the requirement to the control of bloodborne diseasess such as hepatitis B, acquired immune deficiency syndrome (AIDS), various self-destruction syringes and safety injector have appearred on the market.International Organization for Standardization has also published corresponding international standard.The characteristics of present safety injector are must shift push rod onto the end can start safety device, if deliberately push rod is not shifted onto the end, this safety device can not start, still can be reusable, and do not influence the function of product when reusing significantly.Therefore can not reach the standard of ISO in this, be start injection or finish at least the injection marked capacity 30% after start safety device at once to guarantee substantial disposable use, also be that our invention design allows the operator forcibly be merely able to disposable use.As long as some present self-destruction syringe pulls back push rod and started safe self-destruction device immediately, therefore can not carry out dissolved substance or bleeding; Some can carry out the product of dissolved substance or bleeding because it has added metal fittings, and in dissolved substance and bleeding process, have the plastics chip and come off, will be major defect if enter medicinal liquid.
The utility model content:
The invention provides and a kind ofly can either satisfy the iso standard requirement, promptly start safe self-destruction device behind start injection 30% capacity, and have a segment can realize molten medicine and degassing function, and in dissolved substance or bleeding process, can not produce the disposable self-destruction syringe truly of foreign body again.
A kind of type self-destroyed injector for medical purpose, comprise syringe, push rod, locating part, piston and needle tubing, the inwall of syringe is provided with an inwardly protruded muscle, tooth-like part of anything is arranged on the push rod, tooth-like part of anything bottom next-door neighbour has smooth part, and the diameter of smooth part is less than the external diameter of tooth-like part of anything, and smooth part bottom next-door neighbour has step, the external diameter of step is greater than the external diameter of smooth part, and the afterbody of push rod has the hole; The locating part lower end has to tiltedly the dentation of direction inclination is outstanding down; The push rod of partial-band dentation has a slick short free active segment together with plug, and after having injected less than 30% marked capacity, the locating part of push rod prepackage is climbed up the dentation section on the push rod;
The material of described syringe is plastics; The material of described needle tubing is a rustless steel.
Described muscle is inwardly protruded or circular arc or point-like, and the opening of described syringe has the ring spacing or circular arc or point-like of an internal diameter less than syringe self internal diameter, and the end of syringe has an aperture to be connected with needle tubing.
The lower end of described locating part has outstanding circular of 2 of tilting to oblique down direction or 2 above dentations, perhaps other non-annulars, perhaps point-like, perhaps C shape hatch frame; It is separately outstanding dentation that the locating part lower end has the slit; The external diameter of described locating part is equal to or greater than the internal diameter of syringe.
Described locating part has the primary importance and the second position in syringe, locating part its position when primary importance is subjected to the restriction of muscle; Locating part its position when the second position is subjected to the restriction of spacing ring; When locating part during in primary importance, piston the distance that can move up and down between the bottom and step of tooth-like part of anything.
Described locating part is when position two, and syringe has heap(ed) capacity; When piston in primary importance, locating part is when the second position, push rod can not be drawn out; If utilize external force to continue the pulling push rod, push rod ruptures in the hole.
This product has the following advantages:
(1) design is light and handy, and materials are minimum, reach optimum economic benefit;
(2) accessory is simple, can realize automatization's assembling;
(3) design smooth section, increased molten medicine function and degassing function, solved clinical demand;
(4) do not add any metal parts, can not take place foreign body separate out or expect to consider to be worth doing come off.
Description of drawings
Fig. 1 is the profile of the syringe of this utility model syringe.
Fig. 2 is the longitudinal sectional drawing of the push rod of this utility model syringe.
Fig. 3 is the schematic perspective view of the push rod of this utility model syringe.
Fig. 4 is the sketch map of the stop of this utility model syringe.
Fig. 5 is the structure chart of the stop of this utility model syringe.
Fig. 6 is the profile of this utility model syringe.
View when Fig. 7 uses for this utility model syringe.
The specific embodiment:
A kind of type self-destroyed injector for medical purpose, comprise syringe 10, push rod 20 locating parts 30, piston 40 and needle tubing 50, the inwall of syringe 10 is provided with an inwardly protruded muscle 13, tooth-like part of anything 22 is arranged on the push rod 20, tooth-like part of anything 22 bottoms next-door neighbour has smooth part 24, and the diameter of smooth part 24 is less than the external diameter of tooth-like part of anything 22, and smooth part 24 bottoms next-door neighbour has step 25, the external diameter of step 25 is greater than the external diameter of smooth part 24, and the afterbody of push rod 20 has hole 27; Locating part 30 lower ends have the dentation outstanding 32 to tiltedly direction inclination down; The push rod of partial-band dentation has a slick short free active segment together with plug, and after having injected less than 30% marked capacity, the locating part of push rod prepackage is climbed up the dentation section on the push rod;
The material of described syringe 10 is plastics; The material of described needle tubing 50 is a rustless steel.
Described muscle 13 is inwardly protruded or circular arc or point-like, and the opening of described syringe 10 has the ring 12 spacing or circular arc or point-like of an internal diameter less than syringe self internal diameter, and the end of syringe 10 has an aperture 14 to be connected with needle tubing 50.
The lower end of described locating part 30 has the circular of 2 or 2 above dentations outstanding 32 tilting to oblique down direction, perhaps other non-annulars, perhaps point-like, perhaps C shape hatch frame; Locating part 30 lower ends have slit 33 dentation were opened in outstanding 32 minutes; The external diameter of described locating part 30 is equal to or greater than the internal diameter of syringe 10.
Described locating part 30 has primary importance 30a and second position 30b in syringe, locating part 30 its position when primary importance 30a is subjected to the restriction of muscle 13; Locating part 30 its position when second position 30b is subjected to the restriction of spacing ring 12; When locating part 30 during at primary importance 30a, 40 distances that can move up and down of piston are between the bottom 23 and step 25 of tooth-like part of anything 22.
During two 30b, syringe has heap(ed) capacity to described locating part 30 in the position; When piston 40 at primary importance 40a, locating part 30 is when second position 30b, push rod 20 can not be drawn out; If utilize external force to continue the pulling push rod, push rod 20 27 ruptures in the hole.
Do an explanation below in conjunction with accompanying drawing and use-case.
Accompanying drawing 1 is the profile of syringe.There is shown spacing ring 12 and inwardly protruded muscle 13;
Accompanying drawing 2 is diagrams of push rod.Show the position of the step 25 of tooth-like part of anything 22 and smooth part 24 and smooth part bottom;
Accompanying drawing 3 is locating parts.There is shown oblique dentation outstanding 32;
Accompanying drawing 4 is profiles of finished product.This is a state before use, this be locating part in primary importance, just inwardly protruded muscle 13 makes locating part 30 to move down again, this moment, the dentation outstanding 32 of locating part was positioned at the lower edge of push rod tooth-like part of anything 22 tooth bottom just.
Shown in the accompanying drawing 5 be dissolved substance or bleeding the time situation.This moment push rod movably ultimate range be step 25 from the lower edge of push rod tooth-like part of anything 22 tooth bottom to smooth part 24 and smooth part bottom.The amount of liquid of syringe suction at this moment or release is less than gauged 1/2.
Accompanying drawing 6 shows the process of last inspiration liquid.Locating part 30 is driven to move up by the step 25 of smooth part bottom and leaves primary importance in this process, this moment is if promote push rod 20 downwards, because it is motionless that the fricative resistance of locating part 30 and syringe 10 inwalls will make that locating part 30 remains on original position, then Suo Ding safe self-destruction device will be activated.Reach maximum liquid absorption when continuing upwards to spur push rod to spacing ring 12.Maximum at this moment imbibition space is greater than marked capacity, so that leave the space of bleeding.
Accompanying drawing 7 shows the state of finishing after the injection, this moment locating part 30 in its second position, push rod can not be pulled rearward moving.
Accompanying drawing 7 show the injection finish after, if firmly spur push rod, because the gmatjpdumamics of locating part 30 and push rod rib-loop is greater than the intensity at push rod afterbody punching position 27, spacing ring 12 end power also greater than the intensity at push rod afterbody punching position 27, push rod can be broken and is not drawn out at 27 positions, and locating part 30 and push rod rib-loop can continue to bite.
In the whole operation process, need only locating part 30 and leave primary importance, its oblique tooth will with tooth 22 interlocks on the push rod, safe self-destruction device will be activated, according to the ISO standard require behind start injection 30% capacity, promptly to start safe self-destruction device, and have a segment can realize molten medicine and degassing function, and in dissolved substance or bleeding process, can not produce the disposable self-destruction syringe truly of foreign body again.
Claims (5)
1. type self-destroyed injector for medical purpose, comprise syringe (10), push rod (20) locating part (30), piston (40) and needle tubing (50), it is characterized in that: the inwall of described syringe (10) is provided with an inwardly protruded muscle (13), the tooth-like part of anything (22) that has crown to make progress on the described push rod (20), tooth-like part of anything (22) bottom next-door neighbour has smooth part (24), the diameter of described smooth part (24) is less than the external diameter of tooth-like part of anything (22), smooth part (24) bottom next-door neighbour has step (25), the external diameter of described step (25) is greater than the external diameter of smooth part (24), and the afterbody of push rod (20) has hole (27); Described locating part (30) lower end has the dentation outstanding (32) to tiltedly direction inclination down; The push rod of described partial-band dentation has a slick short free active segment together with plug, and after having injected less than 30% marked capacity, the locating part of push rod prepackage is climbed up the dentation section on the push rod;
The material of described syringe (10) is plastics; The material of described needle tubing (50) is a rustless steel.
2. type self-destroyed injector for medical purpose as claimed in claim 1, it is characterized in that: described muscle (13) is inwardly protruded or circular arc or point-like, the opening of described syringe (10) has the ring spacing or circular arc or point-like (12) of an internal diameter less than syringe self internal diameter, and the end of syringe (10) has an aperture (14) to be connected with needle tubing (50).
3. type self-destroyed injector for medical purpose as claimed in claim 1, it is characterized in that: the lower end of described locating part (30) has the circular of 2 of tilting to oblique down direction or 2 above dentations outstanding (32), perhaps other non-annulars, perhaps point-like, perhaps C shape hatch frame; Locating part (30) lower end has slit (33) dentation outstanding (32) separately; The external diameter of described locating part (30) is equal to or greater than the internal diameter of syringe (10).
4. type self-destroyed injector for medical purpose as claimed in claim 3, it is characterized in that: described locating part (30) has the primary importance (30a) and the second position (30b) in syringe, and locating part (30) its position when primary importance (30a) is subjected to the restriction of muscle (13); Locating part (30) its position when the second position (30b) is subjected to the restriction of spacing ring (12); When locating part (30) when primary importance (30a), piston (40) the distance that can move up and down between the bottom (23) and step (25) of tooth-like part of anything (22).
5. type self-destroyed injector for medical purpose as claimed in claim 4 is characterized in that: during two (30b), syringe has heap(ed) capacity to described locating part (30) in the position; When piston (40) at primary importance (40a), locating part (30) is when the second position (30b), push rod (20) can not be drawn out; If utilize external force to continue the pulling push rod, push rod (20) in the hole (27) rupture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200011817U CN201862083U (en) | 2010-01-15 | 2010-01-15 | Disposable self-destroying medical syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200011817U CN201862083U (en) | 2010-01-15 | 2010-01-15 | Disposable self-destroying medical syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201862083U true CN201862083U (en) | 2011-06-15 |
Family
ID=44133250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200011817U Expired - Fee Related CN201862083U (en) | 2010-01-15 | 2010-01-15 | Disposable self-destroying medical syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201862083U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102038988B (en) * | 2010-01-15 | 2012-10-03 | 盛春胜 | Disposable self-destruction medical syringe |
| JP2018512964A (en) * | 2015-04-23 | 2018-05-24 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Drug delivery device and predetermined breaking member for drug delivery device |
| JP2018513745A (en) * | 2015-04-23 | 2018-05-31 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Drug delivery device and holding member for drug delivery device |
| CN112457970A (en) * | 2020-12-09 | 2021-03-09 | 杭州安誉科技有限公司 | Nucleic acid extraction instrument with self-destruction structure |
-
2010
- 2010-01-15 CN CN2010200011817U patent/CN201862083U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102038988B (en) * | 2010-01-15 | 2012-10-03 | 盛春胜 | Disposable self-destruction medical syringe |
| JP2018512964A (en) * | 2015-04-23 | 2018-05-24 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Drug delivery device and predetermined breaking member for drug delivery device |
| JP2018513745A (en) * | 2015-04-23 | 2018-05-31 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Drug delivery device and holding member for drug delivery device |
| US10869968B2 (en) | 2015-04-23 | 2020-12-22 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device and retaining member for a drug delivery device |
| US10933201B2 (en) | 2015-04-23 | 2021-03-02 | Sanofi-Aventis Deutschland Gmbh | Drug delivery device and predetermined breaking member for a drug delivery device |
| CN112457970A (en) * | 2020-12-09 | 2021-03-09 | 杭州安誉科技有限公司 | Nucleic acid extraction instrument with self-destruction structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20180115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |