CN201052312Y - Disposable self-destruction syringe - Google Patents
Disposable self-destruction syringe Download PDFInfo
- Publication number
- CN201052312Y CN201052312Y CNU2007200520942U CN200720052094U CN201052312Y CN 201052312 Y CN201052312 Y CN 201052312Y CN U2007200520942 U CNU2007200520942 U CN U2007200520942U CN 200720052094 U CN200720052094 U CN 200720052094U CN 201052312 Y CN201052312 Y CN 201052312Y
- Authority
- CN
- China
- Prior art keywords
- needle stand
- syringe
- disposable self
- push rod
- lock sleeve
- 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
- 210000002445 nipple Anatomy 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 244000208734 Pisonia aculeata Species 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a disposable self-destruction 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 needle file joint hole, the downthehole needle file that is equipped with of needle file joint connects, the needle file connects and is equipped with the pull-back hole, its technical scheme's main points are, the cylinder front end outside is equipped with rotatable lock sleeve, needle file connect and the lock sleeve between be equipped with and connect the kayser mechanism of kayser on the cylinder with the needle file, push rod and needle file connect between be equipped with the pull. The utility model aims to overcome the defects of the prior art and provide a disposable self-destruction injector with convenient operation, reliable barb block and simple structure. The utility model discloses a hemisphere head overhead kick and the pawl of turning on one's side, the block is reliable, and the atress is effectual, is difficult for taking off and colludes, and it is few to remain the liquid medicine. The utility model discloses be provided with the lock sleeve, the needle file inserts from the cylinder front end, and easy operation is convenient.
Description
[technical field]
This utility model relates to medical apparatus and instruments, a kind of disposable self-destruction 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 mechanism that pulls back of bending, and engaging all is the overhead kick of placed arrow type, and stressed effect is bad, and the overhead kick engaging is unreliable, takes off easily and colludes.
[utility model content]
This utility model purpose is to have overcome the deficiencies in the prior art, and the disposable self-destruction syringe that a kind of side of operation makes, the overhead kick engaging is reliable, simple in structure is provided.
This utility model is achieved through the following technical solutions:
A kind of disposable self-destruction 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, the needle stand joint is provided with the hole of pulling back, it is characterized in that: rotatable lock sleeve is equipped with in the syringe front end outside, be provided with between described needle stand joint and the lock sleeve and the locking mechanism of needle stand joint kayser on syringe can be provided with the mechanism that pulls back between described push rod and the needle stand joint.
Aforesaid a kind of disposable self-destruction syringe is characterized in that the described mechanism that pulls back comprises the overhead kick and be arranged on and be used for blocking the rollover ratchet of overhead kick of pulling back on the hole sidewall of pulling back of pulling back that is arranged on the push rod front end.
Aforesaid a kind of disposable self-destruction syringe is characterized in that the root of described rollover ratchet and needle stand joint are connected as a single entity, and the outside of rollover ratchet is provided with and can makes the inwardly male part of extruding of rollover ratchet.
Aforesaid a kind of disposable self-destruction syringe is characterized in that described male part is outer convex inclined plane.
Aforesaid a kind of disposable self-destruction syringe is characterized in that described rollover ratchet is two, is symmetricly set on the both sides, hole of pulling back.
Aforesaid a kind of disposable self-destruction syringe is characterized in that the described overhead kick of pulling back is the hemispherical head overhead kick.
Aforesaid a kind of disposable self-destruction syringe is characterized in that described needle stand joint is provided with eccentric pushing block.
Aforesaid a kind of disposable self-destruction syringe is characterized in that described locking mechanism comprises the locking slot that inboard salient point that is provided with of lock sleeve and the needle stand that cooperates with salient point are provided with, and locking slot comprises introduction part and the tight lock part that salient point slips into.
Aforesaid a kind of disposable self-destruction 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 self-destruction syringe is characterized in that described salient point is 4, and circle distribution is in the inboard of lock sleeve.
Compared with prior art, this utility model has following advantage:
1, this utility model adopts hemispherical head overhead kick and rollover ratchet, and engaging is reliable, and stressed effect is good, is difficult for taking off colluding, and residual liquor is few.
2, 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.
[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 partial enlarged drawing of the present utility model;
Fig. 4 is a front view of the present utility model;
Fig. 5 is an A-A cutaway view of the present utility model;
Fig. 6 is this utility model needle stand joint figure;
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 self-destruction 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 front ends are equipped with piston 3, described cavity 101 front ends are provided with needle stand nipple orifice 102, and needle stand joint 5 is housed in the needle stand nipple orifice 102, and the sealing ring 8 of a sealing function is housed on the needle stand joint 5.Needle stand joint 5 is provided with the hole 504 of pulling back, rotatable lock sleeve 4 is equipped with in the syringe 1 front end outside, be provided with between described needle stand joint 5 and the lock sleeve 4 and the locking mechanism 6 of needle stand joint 5 kaysers on syringe 1 can be provided with the mechanism 7 that pulls back between described push rod 2 and the needle stand joint 5.
The mechanism 7 that pulls back comprises the overhead kick 202 and be arranged on and be used for blocking the rollover ratchet 505 of overhead kick 202 of pulling back on hole 504 sidewalls of pulling back of pulling back of the hemisphere head dummy that is arranged on push rod 2 front ends.The root and the needle stand joint 5 of rollover ratchet 505 are connected as a single entity, and the outside of rollover ratchet 505 is symmetrical arranged and is provided with two outer convex inclined planes 506 that rollover ratchet 505 is inwardly pushed.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.Be provided with the annular card article 104 of axial location outside syringe 1 front end and prevent that vertical card article 105 that lock sleeve 4 freely rotates, 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.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 injection of suction liquid medicine, after push rod 2 shifted onto rising pouring and shoot away, eccentric pushing block 507 is compressed in the piston, continue push rod 2 forward, the overhead kick 202 of pulling back snaps onto in the hole 504 of pulling back, because the effect of the external convex inclined plane 506 of hole wall in needle stand hole 102, rollover ratchet 505 is pushed to the inside, and rollover ratchet 505 just blocks it rotational lock cover 4 when the overhead kick 202 of pulling back is inserted, 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 pushing block 507 is just pushed away needle stand joint 5 by the piston 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 (10)
1. disposable self-destruction 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), needle stand joint (5) is provided with the hole of pulling back (504), it is characterized in that: rotatable lock sleeve (4) is equipped with in syringe (1) the front end outside, be provided with between described needle stand joint (5) and the lock sleeve (4) and the locking mechanism (6) of needle stand joint (5) kayser on syringe (1) can be provided with the mechanism that pulls back (7) between described push rod (2) and the needle stand joint (5).
2. a kind of disposable self-destruction syringe according to claim 1 is characterized in that the described mechanism that pulls back (7) comprises the overhead kick of pulling back (202) that is arranged on push rod (2) front end and is arranged on to be used for blocking the rollover ratchet (505) of overhead kick (202) of pulling back on the sidewall of the hole of pulling back (504).
3. a kind of disposable self-destruction syringe according to claim 2, the root and the needle stand joint (5) that it is characterized in that described rollover ratchet (505) are connected as a single entity, and the outside of rollover ratchet (505) is provided with and can makes the inwardly male part (506) of extruding of rollover ratchet (505).
4. a kind of disposable self-destruction syringe according to claim 3 is characterized in that described male part (506) is outer convex inclined plane.
5. a kind of disposable self-destruction syringe according to claim 2 is characterized in that described rollover ratchet (505) is two, is symmetricly set on both sides, the hole of pulling back (504).
6. according to the described a kind of disposable self-destruction syringe of claim 1, it is characterized in that the described overhead kick of pulling back (202) is the hemispherical head overhead kick.
7. a kind of disposable self-destruction syringe according to claim 1 is characterized in that described needle stand joint (5) is provided with eccentric pushing block (507).
8. a kind of disposable self-destruction syringe according to claim 1, it is characterized in that described locking mechanism (6) comprises the locking slot (501) that inboard salient point (403) that is provided with of lock sleeve (4) and the needle stand that cooperates with salient point (403) are provided with, locking slot (501) comprises introduction part (502) and the tight lock part (503) that salient point (403) slips into.
9. a kind of disposable self-destruction 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).
10. according to the described a kind of disposable self-destruction syringe of claim 7, it is characterized in that described salient point (403) is 4, circle distribution is in the inboard of lock sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200520942U CN201052312Y (en) | 2007-05-29 | 2007-05-29 | Disposable self-destruction syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200520942U CN201052312Y (en) | 2007-05-29 | 2007-05-29 | Disposable self-destruction syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201052312Y true CN201052312Y (en) | 2008-04-30 |
Family
ID=39391981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200520942U Expired - Fee Related CN201052312Y (en) | 2007-05-29 | 2007-05-29 | Disposable self-destruction syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201052312Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109908433A (en) * | 2018-12-05 | 2019-06-21 | 王琳 | Disposable micro volume high precision safety syringe |
| WO2022268082A1 (en) * | 2021-06-24 | 2022-12-29 | 袁月 | Self-destructing disposable syringe |
-
2007
- 2007-05-29 CN CNU2007200520942U patent/CN201052312Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109908433A (en) * | 2018-12-05 | 2019-06-21 | 王琳 | Disposable micro volume high precision safety syringe |
| WO2020113758A1 (en) * | 2018-12-05 | 2020-06-11 | 王琳 | Disposable high-precision safe microsyringe |
| CN109908433B (en) * | 2018-12-05 | 2022-02-08 | 王琳 | Disposable micro volume high precision safety syringe |
| WO2022268082A1 (en) * | 2021-06-24 | 2022-12-29 | 袁月 | Self-destructing disposable syringe |
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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 |