CN1174745A - Micro-dosage safety syringe - Google Patents
Micro-dosage safety syringe Download PDFInfo
- Publication number
- CN1174745A CN1174745A CN 96109463 CN96109463A CN1174745A CN 1174745 A CN1174745 A CN 1174745A CN 96109463 CN96109463 CN 96109463 CN 96109463 A CN96109463 A CN 96109463A CN 1174745 A CN1174745 A CN 1174745A
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- syringe
- piston
- needle
- piston rod
- seam
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Abstract
In order to provide a kind of micro-dosage safty syringe capable of damaging the syringe needle and preventing the syringe needle set from falling out from the syringe tube, the present invention designed syringe is composed of syringe tube ,syringe needle set and piston. On the front and rear ends of the syringe tube inner periphery, stop mouthes are installed separately. The front and rear ends of the syringe needle set are hollow syringe needle body and needle handle, the needle handle is elastic, on which a conical recess is formed wit hcentral line inclined relatively to the central line of needle handle on the external periphery, there is a fillister, the piston set is composed of piston and piston rod. There is a central through hole for the piston. On the top face of the top end of the piston rod and the external periphery, the thin rods with arrow body on rod's top and anti-penetrating rings are installed separately. At the external periphery of the middle part of the piston..
Description
The invention belongs to medium is imported the intravital apparatus of people, particularly a kind of micro-dosage safety syringe.
Little dosage syringe is generally used for the atomic vaccine prevention pin of dosage, injection of insulin and the baby is injected.This little dosage syringe, the scale on its needle cylindrical unit must be very accurate.For this reason, usually adopt as shown in Figure 1 dress mode beyond the syringe needle group is installed in little dosage syringe on the syringe; Or adopting as shown in Figure 2 pinhead handle to be installed in little dosage syringe on the neck tube of syringe with the syringe needle group, its piston rod is provided with breach; The former must recover the pin lid on the needle head body of syringe needle group after using, and the syringe needle group is extracted to abandon again from syringe, makes the needle head body of used syringe needle group do not damaged, and has the hidden danger of contaminated environment; The latter is after using, when drawing back piston rod, draw back the syringe needle group in the syringe in the lump, and the breach of suitable piston rod fractures piston rod, make used syringe needle group be retained in the syringe, not only because of not damaging the syringe needle group, in case syringe breaks, or the syringe needle group drops out from the neck tube of syringe, still may cause environmental pollution; And can not make the purpose that minimum bore makes it not reach trace control because of its syringe.
The purpose of this invention is to provide and a kind ofly the piston rod that fractures can be inserted the damage needle head body, prevents the micro-dosage safety syringe that the syringe needle group drops out in the syringe from the front end of syringe.
The present invention is made up of syringe, syringe needle group and piston set, and syringe is for constituting the cylindrical shell of cavity, and its front end has telescopic resilience, and the front and back ends in week is respectively equipped with seam in syringe; The front and back ends of syringe needle group is hollow pinhead body and needle handle, the front end of needle head body forms needle point, needle handle is elasticity, which is provided with central through hole, constitute the taper depression of the relative central through hole lack of alignment of centrage in the bottom of central through hole, its periphery is provided with can be respectively and the groove of syringe front and back ends seam tabling; Piston set is made up of piston and piston rod, and piston is that external diameter is corresponding with the syringe internal diameter and be provided with the rubber stopper of central through hole; The end face of piston rod is provided with the thin bar that passes the piston central through hole, be provided with arrow body with the taper depression tabling of syringe needle group needle handle bottom on the top of thin bar, be provided with and the corresponding anti-ring that runs through of syringe internal diameter in the top of piston rod periphery, the middle part of piston rod periphery be provided with can be respectively with syringe after, the positioning convex point of front end seam tabling; The syringe needle group is installed in the syringe front end, and the groove inlay card that makes its needle handle periphery is on the seam of syringe front end, and piston is installed in the top of piston rod, and in piston rod is slidingly mounted on the syringe cavity.
Because the present invention is made up of syringe, syringe needle group and piston set, the front and back ends in week is respectively equipped with seam in syringe; The front and back ends of syringe needle group is hollow pinhead body and needle handle, and needle handle is elasticity, which is provided with the bottom and constitutes the centrage taper depression of its lack of alignment relatively, and its periphery is provided with groove; Piston set is made up of piston and piston rod, and piston is the rubber stopper that is provided with central through hole; The end face at the top of piston rod and periphery are respectively equipped with the thin bar of top band arrow body and prevent running through ring, and periphery is provided with positioning convex point at the middle part of piston rod.
During assembling, the syringe needle group is installed in the syringe front end, and the groove inlay card that makes its needle handle periphery is on the seam of syringe front end, and piston is installed in the top of piston rod, and in piston rod is slidingly mounted on the syringe cavity.
During injection, piston rod and upper piston thereof are upwards passed along syringe, finished until injection, the arrow body on the thin bar of piston rod end face and the taper depression of needle handle bottom are chimeric, and piston set and syringe needle group are combined as a whole; When retracting piston set, the syringe needle group is driven together to be drawn back to syringe, on the seam of groove inlay card at back end of syringe of needle handle periphery, syringe is exposed in thin bar and its junction of piston rod end face, because the relative needle handle lack of alignment of centrage of needle handle bottom taper depression makes automatic deflection when contracting to syringe in the syringe needle group; Piston rod fractures along the junction of thin bar and its end face on the piston rod, again the piston rod that fractures is inserted syringe from the syringe front end, with anti-running through on the needle head body that ring compresses the syringe needle group of deflection automatically on it, until the damage needle head body, and the positioning convex point inlay card that makes piston rod middle part periphery can not only be damaged needle head body, and can prevent that the syringe needle group from dropping out in syringe on the seam of syringe front end, stop little dosage syringe the phenomenon that environment pollutes is taken place, thereby reach purpose of the present invention.
Fig. 1, little dosage syringe structural representation front view (the syringe needle group is for pulling up formula) for commonly using.
Fig. 2, little dosage syringe structural representation front view (the syringe needle group is the withdrawal formula) for commonly using.
Fig. 3, for structural representation profile of the present invention.
Fig. 4, be user mode sketch map of the present invention (piston set and syringe needle group are combined as a whole state).
Fig. 5, be user mode sketch map of the present invention (retract piston set, syringe needle group and driven groove inlay card state on the seam of back end of syringe of drawing back to syringe and making its needle handle periphery together).
Fig. 6, for user mode sketch map of the present invention (the piston rod state fractures).
Fig. 7, be user mode sketch map of the present invention (piston rod that fractures inserts syringe, damage needle head body state from the syringe front end).
Below in conjunction with accompanying drawing the present invention is further elaborated.
As shown in Figure 3, the present invention is made up of syringe 1, syringe needle group 2 and piston set 3, syringe 1 is for constituting the cylindrical shell of cavity 11, its front end wall is thinner, and has telescopic resilience, the front end in week is provided with seam 12 in syringe 1, and the rear end in week is provided with upper and lower seam 13,14 in syringe 1, and seam 14 is acute angle-shaped under the order; The front and back ends of syringe needle group 2 is hollow pinhead body 21 and needle handle 22, the front end of needle head body 21 forms needle point 211, needle handle 22 is elasticity, which is provided with central through hole 221, constitute the taper depression 222 of relative central through hole 221 lack of alignments of centrage in the bottom of central through hole 221, be provided with the horn mouth 223 that is connected with it below taper depression 222, needle handle 22 peripheries are provided with can be respectively and the upper and lower groove 224,225 of syringe 1 front end seam 12, upper and lower seam 13,14 tablings in rear end; Piston set 3 is made up of piston 31 and piston rod 32, and piston 31 is corresponding with syringe 1 internal diameter and be provided with the rubber stopper of central through hole 311 for external diameter; The end face of piston rod 32 is provided with the thin bar 321 of the central through hole 311 that passes piston 31, be provided with arrow body 322 with taper depression 222 tablings of needle handle 22 bottoms of syringe needle group 2 on the top of thin bar 321, be provided with and the corresponding two-layer anti-ring 323 that runs through of syringe 1 internal diameter in piston rod 32 top peripheries, the middle part of piston rod 32 periphery be provided with can be respectively and the positioning convex point 324 of syringe 1 back, front end seam 14,12 tablings; Syringe needle group 2 is installed in the end of syringe 1, and upper groove 224 inlay cards that make its needle handle 22 peripheries are on the seam 12 of syringe front end, and piston 31 is installed in the top of piston rod 32, and in piston rod 32 is slidingly mounted on the cavity 11 of syringe 1.
During injection, as shown in Figure 4, piston rod 32 and upper piston 31 thereof are upwards passed along syringe 1, finished until injection, arrow body 322 on the thin bar 321 of piston rod 32 end faces is chimeric with the taper depression 222 of needle handle 22 bottoms, and piston set 3 and syringe needle group 2 are combined as a whole; As shown in Figure 5, when retracting piston set 3, syringe needle group 2 is driven together to be drawn back to syringe 1, on the upper and lower seam 13,14 of upper and lower groove 224,225 inlay cards in syringe 1 rear end of needle handle 22 peripheries, and make the thin bar 321 of piston rod 32 end faces expose syringe 1 with its junction 325, because relative needle handle 22 lack of alignments of centrage of needle handle 22 bottom taper depressions 222 make automatic deflection when contracting in the syringe needle group 2 to syringe 1; As shown in Figure 6, the piston rod 32 that fractures along the junction 325 of thin bar 321 on the piston rod 32 and its end face; As shown in Figure 7, again the piston rod 32 that fractures is inserted syringe 1 from syringe 1 front end, with anti-running through on the needle head body 21 that ring 323 compresses the syringe needle group 2 of deflection automatically on it, until damage needle head body 21, and positioning convex point 324 inlay cards that make piston rod 32 middle part peripheries are on the seam 12 of syringe 1 front end, can not only damage needle head body 21, and can prevent that syringe needle group 2 from dropping out in syringe 1.
Claims (5)
1, a kind of micro-dosage safety syringe, it is made up of syringe, syringe needle group and piston set, and syringe is for constituting the cylindrical shell of cavity; The front and back ends of syringe needle group is hollow pinhead body and needle handle, and the front end of needle head body forms needle point, and needle handle is elasticity, which is provided with central through hole; Piston set is made up of piston and piston rod, and piston external diameter is corresponding with the syringe internal diameter; The syringe needle group is installed in the syringe front end; Piston is installed in the top of piston rod, and in piston rod is slidingly mounted on the syringe cavity; It is characterized in that described syringe front end has telescopic resilience, the front and back ends in week is respectively equipped with seam in syringe; Constitute the taper depression of the relative central through hole lack of alignment of centrage in the bottom of needle handle central through hole, its periphery is provided with can be respectively and the groove of syringe front and back ends seam tabling; Piston is provided with central through hole; The end face of piston rod is provided with the thin bar that passes the piston central through hole, be provided with arrow body with the taper depression tabling of syringe needle group needle handle bottom on the top of thin bar, be provided with and the corresponding anti-ring that runs through of syringe internal diameter in the top of piston rod periphery, the middle part of piston rod periphery be provided with can with the positioning convex point of syringe front end seam tabling; The groove inlay card of needle handle periphery is on the seam of syringe front end.
2, micro-dosage safety syringe according to claim 1 is characterized in that the below of described needle handle taper depression is provided with the horn mouth that is connected with it.
3, micro-dosage safety syringe according to claim 1 and 2 is characterized in that described back end of syringe is provided with upper and lower seam.
4, micro-dosage safety syringe according to claim 3 is characterized in that the following seam of described back end of syringe is acute angle-shaped.
5, micro-dosage safety syringe according to claim 1 and 2 is characterized in that described piston rod part periphery is provided with the two-layer anti-ring that runs through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109463 CN1092528C (en) | 1996-08-22 | 1996-08-22 | Micro-dosage safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96109463 CN1092528C (en) | 1996-08-22 | 1996-08-22 | Micro-dosage safety syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1174745A true CN1174745A (en) | 1998-03-04 |
| CN1092528C CN1092528C (en) | 2002-10-16 |
Family
ID=5120368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96109463 Expired - Fee Related CN1092528C (en) | 1996-08-22 | 1996-08-22 | Micro-dosage safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1092528C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005037351A1 (en) * | 2003-09-09 | 2005-04-28 | Ping-Te Huang | Safety syringe |
| CN101862492A (en) * | 2010-05-27 | 2010-10-20 | 郑德夫 | Safety self-destruction syringe |
| CN101474443B (en) * | 2009-01-07 | 2011-10-05 | 无锡市宇寿医疗器械有限公司 | Improved type safe self-destroyed syringe |
| CN103721320A (en) * | 2014-01-25 | 2014-04-16 | 圣光医用制品有限公司 | Safe injector |
| CN109091728A (en) * | 2017-08-01 | 2018-12-28 | 中国科学院深圳先进技术研究院 | A kind of micro liquid syringe and the method that parenchymal tissue is injected |
-
1996
- 1996-08-22 CN CN 96109463 patent/CN1092528C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005037351A1 (en) * | 2003-09-09 | 2005-04-28 | Ping-Te Huang | Safety syringe |
| CN101474443B (en) * | 2009-01-07 | 2011-10-05 | 无锡市宇寿医疗器械有限公司 | Improved type safe self-destroyed syringe |
| CN101862492A (en) * | 2010-05-27 | 2010-10-20 | 郑德夫 | Safety self-destruction syringe |
| CN101862492B (en) * | 2010-05-27 | 2012-11-14 | 徐雪花 | Safety self-destruction syringe |
| CN103721320A (en) * | 2014-01-25 | 2014-04-16 | 圣光医用制品有限公司 | Safe injector |
| CN109091728A (en) * | 2017-08-01 | 2018-12-28 | 中国科学院深圳先进技术研究院 | A kind of micro liquid syringe and the method that parenchymal tissue is injected |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1092528C (en) | 2002-10-16 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUANG WUSHUN Free format text: FORMER OWNER: CHEN LONGXIONG Effective date: 20021122 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20021122 Address after: Taipei County of Taiwan Province Patentee after: Huang Wushun Address before: 5 floor, No. 91-3 loyalty Road, Taiwan, Taipei Patentee before: Chen Longxiong |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |