CN201052311Y - Disposable safety syringe - Google Patents
Disposable safety syringe Download PDFInfo
- Publication number
- CN201052311Y CN201052311Y CNU2007200520938U CN200720052093U CN201052311Y CN 201052311 Y CN201052311 Y CN 201052311Y CN U2007200520938 U CNU2007200520938 U CN U2007200520938U CN 200720052093 U CN200720052093 U CN 200720052093U CN 201052311 Y CN201052311 Y CN 201052311Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- syringe
- needle stand
- lock sleeve
- disposable safe
- 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
Links
- 239000012634 fragment Substances 0.000 claims abstract description 7
- 210000002445 nipple Anatomy 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a disposable safe formula syringe, including the cylinder, be equipped with the cavity in the cylinder, the cavity afterbody is inserted and is equipped with the push rod, and the piston is equipped with to the push rod front end, the cavity front end be equipped with the needle file joint hole, the needle file joint is downthehole to be equipped with the needle file and connects, its technical scheme's main points are, are equipped with rotatable lock sleeve in the cylinder front end outside, the needle file connect and the lock sleeve between be equipped with and to connect the kayser mechanism of kayser on the cylinder with the needle file, the push rod front end be equipped with eccentric structure, be equipped with back pull mechanism between push rod and. The utility model aims to overcome the defects of inconvenient operation, complex structure and residual liquid medicine in the prior art, and provides a disposable safety syringe with convenient operation and simple structure. The utility model is provided with the locking sleeve, the needle seat is inserted from the front end of the needle cylinder, and the operation is simple and convenient; the utility model discloses a shell fragment flattens to the parallel plane of front end because its elastic energy when pushing away the bottom, does not influence the injection.
Description
[technical field]
This utility model relates to medical apparatus and instruments, a kind of disposable safe formula syringe of saying so more specifically.
[background technology]
Along with growth in the living standard is more and more higher to the safety and the sanitary standard of health care, disposable syringe quilt application more and more widely now, for the use that guarantees disposable syringe disposable, can not reuse, adopt multiple structure to realize this function in the industry, the self-destruction syringe that uses all is to be provided with draw-in groove in the needle stand hole of syringe at present, on needle stand, be provided with salient point, driving needle stand by push rod rotates and cooperates salient point and draw-in groove, needle stand can be blocked and pumpback, though such structure can realize the function of self-destruction, owing to drive the needle stand rotation by push rod, push rod will carry out aerofluxus and extract medicinal liquid, can maloperation during aerofluxus have rotated needle stand and needle stand has been taken back, use is self-destruction thereby cause not, and more inconvenient is that needle stand must insert from the tail end of syringe, operate very inconvenient.The front end that existing self-destruction eccentric structure all is a push rod is provided with the structure of pulling back of bending, can accurately insert needle stand for the structure of pulling back that makes bending, and the hole of needle stand just must be bigger, the bigger residual more medicinal liquid of hole meeting, influence injection, complex structure.
[utility model content]
This utility model purpose is to have overcome the prior art inconvenient operation, complex structure, and the deficiency of residual liquor provides a kind of easy to operate, simple in structure disposable safe formula syringe.
This utility model is achieved through the following technical solutions:
A kind of disposable safe formula syringe, comprise syringe, be provided with cavity in the syringe, the cavity afterbody is inserted with push rod, the push rod front end is equipped with piston, described cavity front end is provided with the needle stand nipple orifice, the needle stand joint is housed in the needle stand nipple orifice, it is characterized in that: rotatable lock sleeve is housed in the syringe front end outside, being provided with between described needle stand joint and the lock sleeve can be with the locking mechanism of needle stand joint kayser on syringe, described push rod front end is provided with eccentric structure, is provided with the mechanism that pulls back between push rod and the needle stand joint.
Aforesaid a kind of disposable safe formula syringe, it is characterized in that described locking mechanism comprise the inboard salient point that is provided with of lock sleeve and cooperate with salient point be arranged on locking slot on the needle stand joint, locking slot comprises introduction part and the tight lock part that salient point slips into.
Aforesaid a kind of disposable safe formula syringe, it is characterized in that being provided with the annular card article of axial location and preventing that vertical card article that lock sleeve freely rotates, lock sleeve are provided with annular slot and the vertical draw-in groove that cooperates with annular card article and vertical card article outside the described syringe front end.
Aforesaid a kind of disposable safe formula syringe is characterized in that described eccentric structure is the shell fragment that upwarps that is arranged on push rod front end one side.
Aforesaid a kind of disposable safe formula syringe, it is characterized in that the described machine of pulling back comprise " arrow " formula pull back overhead kick and be mated be arranged on the hole of pulling back on the needle stand joint.
Aforesaid a kind of disposable safe formula syringe is characterized in that described salient point is 4, and circle distribution is in the inboard of lock sleeve.
Aforesaid a kind of disposable safe formula syringe is characterized in that described push rod is provided with the bar neck short slot of the push rod that is used for fractureing.
Aforesaid a kind of disposable safe formula syringe is equipped with sealing ring on it is characterized in that between described needle stand joint and the needle stand nipple orifice.
Compared with prior art, this utility model has following advantage:
1, this utility model is provided with lock sleeve, and needle stand inserts from the syringe front end, and is simple to operation; Do not need to use the push rod driven rotary, can not produce maloperation and cause not using be self-destruction.
2, eccentric structure of the present utility model is for upwarping shell fragment, thereby the needle stand joint can be ruined to pushing away to a lateral deviation when push rod retracts.Shell fragment because its elastic energy flattens parallel surface to front end, and does not influence injection when shifting the bottom onto.
[description of drawings]
Fig. 1 is this utility model combination stereogram;
Fig. 2 is an exploded view of the present utility model;
Fig. 3 is a front view of the present utility model;
Fig. 4 is an A-A cutaway view of the present utility model;
Fig. 5 is this utility model lock sleeve connecting portion bitmap;
Fig. 6 is this utility model eccentric structure and the structure partial figure that pulls back;
Fig. 7 is this utility model lock sleeve figure;
Fig. 8 is this utility model lock push rod sketch map that fractures.
[specific embodiment]
A kind of disposable safe formula syringe, comprise syringe 1, be provided with cavity 101 in the syringe 1, cavity 101 afterbodys are inserted with push rod 2, push rod 2 is provided with the bar neck short slot 203 of the push rod 2 that is used for fractureing, and push rod 2 front ends are equipped with piston 3, and described cavity 101 front ends are provided with needle stand nipple orifice 102, needle stand joint 5 is housed in the needle stand nipple orifice 102, sealing ring 8 is housed between needle stand joint 5 and the needle stand nipple orifice 102.In the syringe 1 front end outside rotatable lock sleeve 4 is housed, being provided with between described needle stand joint 5 and the lock sleeve 4 can be with the locking mechanism 6 of needle stand joint 5 kaysers on syringe 1, described push rod 2 front ends are provided with eccentric structure 201, are provided with the mechanism 7 that pulls back between push rod 2 and the needle stand joint 5.Pull back mechanism 7 comprise " arrow " formula pull back overhead kick 202 and be mated be arranged on the hole 504 of pulling back on the needle stand joint 5.Locking mechanism 6 comprises the locking slot 501 that lock sleeve 4 inboard salient points that are provided with 403 and the needle stand that cooperates with salient point 403 are provided with, and locking slot 501 comprises introduction part 502 and the tight lock part 503 that salient point 403 slips into.The syringe 1 front end outside is provided with the annular card article 104 of axial location and prevents vertical card article 105 that lock sleeve 4 freely rotates, but available hands rotation lock cover 4, lock sleeve 4 are provided with annular slot 401 and the vertical draw-in groove 402 that cooperates with annular card article 104 and vertical card article 105.Eccentric structure 201 is for being arranged on the shell fragment that upwarps of push rod 2 front ends one side.Salient point 403 is 4, and circle distribution is in the inboard of lock sleeve 4.Push rod 2 is provided with the bar neck short slot 203 of the push rod 2 that is used for fractureing, and push rod 2 can be fractureed from here.
During assembling, piston 3 is installed on the push rod 2, the push rod 2 that will have piston 3 inserts cavity 101, again needle stand joint 5 is inserted in the needle stand nipple orifice 102 of syringe 1 front end, salient point 403 with lock sleeve 4 slides into tight lock part 503 from introduction part 502, then vertical draw-in groove 402 of lock sleeve 4 is aimed at vertical card article 105, annular slot 401 is snapped on the annular card article 104, just needle stand joint 5 is locked at syringe 1 front end.
During use, the suction injecting liquid drug, after push rod 2 shifted onto rising pouring and shoot away, continue push rod 2 forward, the overhead kick 202 of pulling back snaps onto in the hole 504 of pulling back, rotational lock cover 4, salient point 403 is skidded off in locking slot, toward pumpback push rod 2, syringe needle will be pulled back in the cavity 101 with needle stand joint 5, after syringe needle all enters cavity 101, eccentric shell fragment pushes away needle stand joint 5 with regard to resilience and is tilted to a side, the needle point of syringe needle pushes away and is biased on the cavity wall, and just at this moment push rod 2 being pushed away forward can be with the syringe needle bending in cavity 101 again, perhaps push rod 2 is pulled to the syringe 1 tail end push rod 2 that fractures.
Claims (8)
1. disposable safe formula syringe, comprise syringe (1), be provided with cavity (101) in the syringe (1), cavity (101) afterbody is inserted with push rod (2), push rod (2) front end is equipped with piston (3), described cavity (101) front end is provided with needle stand nipple orifice (102), needle stand joint (5) is housed in the needle stand nipple orifice (102), it is characterized in that: rotatable lock sleeve (4) is housed in syringe (1) the front end outside, being provided with between described needle stand joint (5) and the lock sleeve (4) can be with the locking mechanism (6) of needle stand joint (5) kayser on syringe (1), described push rod (2) front end is provided with eccentric structure (201), is provided with the mechanism that pulls back (7) between push rod (2) and the needle stand joint (5).
2. a kind of disposable safe formula syringe according to claim 1, it is characterized in that described locking mechanism (6) comprise the inboard salient point (403) that is provided with of lock sleeve (4) and cooperate with salient point (403) be arranged on locking slot (501) on the needle stand joint (5), locking slot (501) comprises introduction part (502) and the tight lock part (503) that salient point (403) slips into.
3. a kind of disposable safe formula syringe according to claim 1, it is characterized in that described syringe (1) the front end outside is provided with the annular card article (104) of axial location and prevents vertical card article (105) that lock sleeve (4) freely rotates, lock sleeve (4) is provided with annular slot (401) and the vertical draw-in groove (402) that cooperates with annular card article (104) and vertical card article (105).
4. a kind of disposable safe formula syringe according to claim 1 is characterized in that described eccentric structure (201) is for being arranged on the shell fragment that upwarps of push rod (2) front end one side.
5. a kind of disposable safe formula syringe according to claim 1, it is characterized in that the described mechanism that pulls back (7) comprise the overhead kick of pulling back (202) of " arrow " formula and be mated be arranged on the hole of pulling back (504) on the needle stand joint (5).
6. according to the described a kind of disposable safe formula syringe of claim 2, it is characterized in that described salient point (403) is 4, circle distribution is in the inboard of lock sleeve (4).
7. according to the described a kind of disposable safe formula syringe of claim 1, it is characterized in that described push rod (2) is provided with the bar neck short slot (203) of the push rod (2) that is used for fractureing.
8. according to the described a kind of disposable safe formula syringe of claim 1, sealing ring (8) is housed on it is characterized in that between described needle stand joint (5) and the needle stand nipple orifice (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200520938U CN201052311Y (en) | 2007-05-29 | 2007-05-29 | Disposable safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200520938U CN201052311Y (en) | 2007-05-29 | 2007-05-29 | Disposable safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201052311Y true CN201052311Y (en) | 2008-04-30 |
Family
ID=39391980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200520938U Expired - Fee Related CN201052311Y (en) | 2007-05-29 | 2007-05-29 | Disposable safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201052311Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111012976A (en) * | 2020-01-21 | 2020-04-17 | 贝普医疗科技有限公司 | Pull-back syringe with shielding needle eccentric blocking piece |
| CN111012977A (en) * | 2020-01-21 | 2020-04-17 | 贝普医疗科技有限公司 | Pen holder type indwelling needle with shielding needle eccentric blocking piece |
-
2007
- 2007-05-29 CN CNU2007200520938U patent/CN201052311Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111012976A (en) * | 2020-01-21 | 2020-04-17 | 贝普医疗科技有限公司 | Pull-back syringe with shielding needle eccentric blocking piece |
| CN111012977A (en) * | 2020-01-21 | 2020-04-17 | 贝普医疗科技有限公司 | Pen holder type indwelling needle with shielding needle eccentric blocking piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 |