CN100420491C - Safety syringe drum - Google Patents
Safety syringe drum Download PDFInfo
- Publication number
- CN100420491C CN100420491C CNB2004100592782A CN200410059278A CN100420491C CN 100420491 C CN100420491 C CN 100420491C CN B2004100592782 A CNB2004100592782 A CN B2004100592782A CN 200410059278 A CN200410059278 A CN 200410059278A CN 100420491 C CN100420491 C CN 100420491C
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- China
- Prior art keywords
- clamping piece
- injection tube
- safety injection
- head set
- hole
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- 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.)
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Abstract
The present invention relates to a safe injection needle cylinder which comprises a cylinder body, a needle head set, a needle head set seat and a pushing rod, wherein the needle head set is provided with a needle body and a needle head seat; the needle body is arranged on the needle head seat provided with a first through hole; the needle head set seat is connected with one end of the cylinder body and is provided with a second through hole; the needle head set is positioned in the second through hole communicated with the first through hole; one end of the pushing rod is provided with a piston and is provided with an axial line along the pushing direction of the pushing rod; the piston end of the pushing rod is provided with a clamping member slantways arranged on the axial line; the clamping member is provided with a hollow part, a first hook part and a second hook part. When the pushing rod is pushed to the needle head set seat, the first hook part and the second hook part are embedded in the second through hole of the needle head set and respectively hook the inner wall of the second through hole.
Description
Technical field
The present invention relates to a kind of syringe, especially a kind of have a clamping piece, the syringe needle group can be bounced back to the high-safety injection tube in the syringe.
Background technology
Acupuncture accident is with to be engaged in the safety of medical worker closely bound up, from sufferer, doctor, nurse, nurse healthcare workers, can all belong to the potential danger group with the syringe contactee in all working environments.There is nearly about 20 kinds menses communicate illness to dispose syringe improperly and causes disease infection by contact.Wherein, comprise hepatitis B, AIDS, C type hepatitis, diphtheria, gonorrhea, macule, typhoid fever, rash, malaria, syphilis, tuberculosis etc. through blood borne diseases.
Use the danger that is brought in order to reduce syringe, many medical institutions just actively research and develop high-safety injection tube, and the United States Federal and state government also actively pass through bill, the syringe safety problem in the attention work of standardize medical unit.Americanologist had been crossed the high-safety injection tube bill in 2000, and device safe in utilization is answered by explicit stipulation medical institutions, took place unexpectedly to reduce sufferer and medical and nursing work person pricking wound in using the syringe process.Therefore, how producing high-safety injection tube safer, that more allow the people conveniently use, is the target that whole industry circle is made joint efforts.
Existing high-safety injection tube 10, as shown in Figure 1, it comprises a syringe needle group 11, a cylindrical shell 12 and a push rod 13.Wherein, syringe needle group 11 comprises a needle holder 111 and a needle body 112 again.Be provided with one first convergence part 113 in needle holder 111, push rod 13 then be provided with one can with 113 bonded second convergence parts 131, first convergence part.When injection finishes, be installed on push rods 13 in the cylindrical shell 12 and can be pushed to an end of cylindrical shell 12, first convergence part 113 is combined with second convergence part 131, thereby the syringe needle group 11 of utilizing push rod 13 will be incorporated into cylindrical shell 12 inwalls upper ends draws in the inside of cylindrical shell 12, can stab medical personnel with the needle body 112 after avoiding using.
Existing high-safety injection tube 10 utilizes combining of first convergence part 113 and second convergence part 131, to reach the purpose of needle body 112 retractions.Usually, first convergence part 113 is a recess, to combine with second convergence part 131 that is shaped as protuberance.When making the protuberance of second convergence part 131, utilize the processing procedure of injection mo(u)lding mostly, have several die cavitys in each mould, to improve the quantity of producing.Yet a little error during owing to each die cavity die sinking often makes the precision of each finished product be difficult for improving, and easily causes the yield of high-safety injection tube 10 engagings not good.
In addition, please refer to shown in Figure 2ly, in the high-safety injection tube 10 ' that No. the 545254th, the TW patent, more comprise a syringe needle Connection Block 14 and link with needle holder 111.When desiring retractable needles group 11, utilize an overhead kick body 131 ' directly and syringe needle Connection Block 14 collude and close, and the oblique arm of overhead kick body 131 ' is grown up in the internal diameter of syringe needle Connection Block 14.Wherein, overhead kick body 131 ' is that a linearity is colluded body.When injection finishes, push rod 13 is pushed to the bottom of cylindrical shell 12, and overhead kick body 131 ' just colludes with syringe needle Connection Block 14 and closes, and can retract syringe needle group 11, so that syringe needle group 11 bounces back in the cylindrical shell 12.
And the linear overhead kick body 131 ' and the binding of push rod 13 mostly are to utilize melten gel overhead kick body 131 ' to be attached at an end of push rod 13 with manual type.Be difficult for because overhead kick body 131 ' material all in one piece is arranged, and if the excessive then overhead kick of application of force body 131 ' is yielding, therefore linear overhead kick body 131 ' is linked to the processing procedure of push rod 13, and is not suitable for utilizing mechanical automation to produce.Thus, not only had more artificial cost, and can't automatization's mass production, more delayed the speed of processing procedure, increased production cost.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and defective, provide that a kind of engaging yield that can solve existing high-safety injection tube is not good, the overhead kick body can't automated production during with the push rod binding or the like the high-safety injection tube of problem, syringe needle can be retracted in the cylindrical shell, and make that syringe needle is askew to be put, avoid reusing.
Another object of the present invention has clamping piece and is offset to high-safety injection tube on the push rod for providing a kind of.
For reaching above-mentioned purpose, the invention provides a kind of high-safety injection tube, it comprises a cylindrical shell, a syringe needle group, a pin head set base and a push rod.Wherein, the syringe needle group has a needle body and a needle holder, and needle body is arranged at needle holder, and needle holder has one first through hole.One end of pin head set base and cylindrical shell links, and the pin head set base has one second through hole, and the syringe needle group is positioned at second through hole, and first through hole communicates with second through hole.One end of push rod is provided with a piston, direction of propulsion along push rod has an axis, the piston end of push rod has a clamping piece, clamping piece is offset to axis and described clamping piece and described axis and is an angle setting, clamping piece has a hollow bulb, one first hook portion and one second hook portion, when described push rod was pushed into described pin head set base, first hook portion and second hook portion embedded second through hole of pin head set base, and make it catch on the inwall of second through hole respectively.
From the above, high-safety injection tube of the present invention has hollow bulb and is offset to clamping piece on the push rod.After injection was discharged syringe fully, the piston of push rod front end supported to the pin head set base, made the distortion of hollow clamping piece to embed second through hole of pin head set base.When retracting push rod, first hook portion and second hook portion of clamping piece promptly can catch on the inwall of second through hole backward, and then make whole syringe needle group and pin head set base be pulled in the cylindrical shell, expose with the needle body of avoiding having polluted and cause acupuncture accident.Compared with prior art, high-safety injection tube of the present invention does not need the inwall of pin head set base to have relative holding section, can utilize clamping piece to finish with the colluding of second through-hole wall of pin head set base and close action, and the clamping piece with two hook portions, it is stronger that it colludes the ability of closing.Moreover clamping piece is offset on the push rod, so when retracting syringe needle group and pin head set base, can make the askew cylindrical shell that places of needle body, avoids reusing.In addition, the easy material all in one piece of clamping piece is arranged, so when being bonding on the push rod, but automated production, reducing the processing procedure cost, and lifting production efficiency.And clamping piece can utilize impact style one-body molded, promoted the production precision of clamping piece greatly, so also increased the yield of product.
Description of drawings
Fig. 1 is the sketch map of existing high-safety injection tube;
Fig. 2 is another sketch map of existing high-safety injection tube;
Fig. 3 is the sketch map of high-safety injection tube of the present invention;
Fig. 4 is a sketch map of the clamping piece of high-safety injection tube of the present invention;
Fig. 5 is another sketch map of the clamping piece of high-safety injection tube of the present invention, and wherein hole is circular;
Fig. 6 is another sketch map of the clamping piece of high-safety injection tube of the present invention, and wherein first hook portion and second hook portion are asymmetric setting;
Fig. 7 is another sketch map of the clamping piece of high-safety injection tube of the present invention, and wherein clamping piece has more a bending section;
Fig. 8 is another sketch map of the clamping piece of high-safety injection tube of the present invention, and wherein clamping piece has more an offset arm;
Fig. 9 is the side view of the clamping piece of high-safety injection tube of the present invention, and wherein clamping piece has more an offset arm;
The sketch map that Figure 10 finishes for high-safety injection tube injection of the present invention, wherein clamping piece enters second through hole of pin head set base;
Figure 11 is the sketch map that high-safety injection tube of the present invention uses back syringe needle group and pin head set base retraction, and wherein syringe needle group and pin head set base are pulled in the cylindrical shell.
Symbol description among the figure
10 high-safety injection tubes
10 ' high-safety injection tube
11 syringe needle groups
111 needle holder
112 needle bodies
113 first convergence parts
12 cylindrical shells
13 push rods
131 second convergence parts
131 ' overhead kick body
14 syringe needle Connection Blocks
20 high-safety injection tubes
21 cylindrical shells
211 grip parts
212 reducings
22 syringe needle groups
221 needle bodies
222 needle holder
223 first through holes
23 pin head set bases
231 second through holes
24 clamping pieces
241 hollow bulbs
242 first hook portions
243 second hook portions
244 recesses
245 bending sections
246 offset arms
25 push rods
251 pistons
252 axis
253 broken parts
253 ' socket part
The specific embodiment
Hereinafter with reference to relevant drawings, the high-safety injection tube according to preferred embodiment of the present invention is described.
Please refer to shown in Figure 3, high-safety injection tube 20 of the present invention, it comprises a cylindrical shell 21, a syringe needle group 22, a pin head set base 23 and a push rod 25.
As shown in Figure 3, an end of needle holder 222 is provided with for needle body 221, and the other end then links with pin head set base 23.Wherein, needle holder 222 has one first through hole 223, and injection then can enter needle body 221 by first through hole 223, sends in patient's body again.
Pin head set base 23 links with an end of cylindrical shell 21, and pin head set base 23 has one second through hole 231, and syringe needle group 22 is positioned at second through hole, 231, the first through holes 223 and communicates with second through hole 231.In addition, the mode of connection of pin head set base 23 and needle holder 222 can be the screw thread that utilizes on the pin head set base 23, to screw togather with needle holder 222.Certainly, the binding of needle holder 222 and pin head set base 23 also can be mutual clamping.In the present embodiment, needle holder 222 links with screw-in version with pin head set base 23, so look the blood vessel thickness of sufferer and need change pin when injecting as medical personnel, as long as the syringe needle group 22 of outwarding winding original reinstalls new getting final product, operates quite easy.
Please refer to Fig. 3 again, an end of push rod 25 is provided with a piston 251, has an axis 252 along push rod 25.When promoting push rod 25,251 extruding of piston injection makes injection via second through hole 231 of pin head set base 23, first through hole 223 of needle holder 222 and the passage of needle body 221, and enter human body by cylindrical shell 21.
The piston end of push rod 25 has a clamping piece 24, and just than the end near syringe needle group 23, and clamping piece 24 is offset to axis 252.As Fig. 4 and shown in Figure 5, clamping piece 24 has a hollow bulb 241, one first hook portion 242 and one second hook portion 243.The hollow bulb 241 of clamping piece 24 can be arbitrary shape, for example is a polygon, a rhombus, a circle or the like.Clamping piece 24 with hollow bulb 241 then becomes a hollow clamping piece 24, except the weight and required material that can alleviate clamping piece 24, can make that more clamping piece 24 has deformability.When push rod 25 was pushed into pin head set base 23, first hook portion 242 and second hook portion 243 embedded second through hole 231 of pin head set base 23, and make it catch on the inwall of second through hole 231 respectively.
In the present embodiment, when clamping piece 24 is provided with, can utilize melten gel with clamping piece 24 glutinous placing on the push rod 25, and crooked a little bonding, so that clamping piece 24 is offset to axis 252.In addition, the material of clamping piece 24 can be metal, plastics or rustless steel.In the present embodiment, be example with the clamping piece 24 of metal material, clamping piece 24 is one-body molded through impact style, so clamping piece 24 can be flat.And, make that also the precision of clamping piece 24 is easy to control owing to utilize the impact style molding.
In the present embodiment, clamping piece 24 more can have at least one recess 244 (as Fig. 4), the adhesive force when putting so that the increase melten gel is glutinous.As shown in Figure 6, utilize the asymmetric setting of first hook portion 242 and second hook portion 243 of clamping piece 24, make to produce the deviation of gravity center axis 252 of clamping piece 24 in the time of also can causing syringe needle group 22 to be pulled crooked.In addition, please refer to Fig. 7, clamping piece 24 more can comprise a bending section 245, makes the hook portion 242 of winning, second hook portion 243 and hollow bulb 241 offset axis 252, to cause the crooked of syringe needle group 22 and pin head set base 23.
Please refer to Fig. 8 and Fig. 9, clamping piece 24 more can have an offset arm 246, is offset to axis 252 in order to assist clamping piece 24, puts to cause syringe needle group 22 and the askew of pin head set base 23.Wherein, offset arm 244 can be one-body molded with first hook portion 242 and second hook portion 243, for example utilizes impact style one-body molded, and make not copline of offset arm 244 and clamping piece 24, so more can increase the degree that clamping piece 24 is offset to axis 252.
As shown in figure 10, in the present embodiment, when syringe cylinder 20 safe in utilization is injected, support the grip part 211 of cylindrical shell 21, and promote push rod 25 simultaneously and move, discharge fully up to injection towards the direction of syringe needle group 22 with banjo splint.Because clamping piece 24 is a hollow,, make clamping piece 24 distortion to embed second through hole 231 of pin head set base 23 so first hook portion 242 and second hook portion 243 can be close mutually.
Please refer to Figure 11, after treating that clamping piece 24 enters second through hole 231 of pin head set base 23, push rod 25 can be retracted backward, and first hook portion 242 and second hook portion 243, promptly can catch on the inwall of second through hole 231, and then syringe needle group 22 and pin head set base 23 be pulled in the cylindrical shell 21 together, be exposed to outside the cylindrical shell 21 with the needle body of avoiding having polluted 221, and cause acupuncture accident.
Be pulled syringe needle group 22 and pin head set base 23 in cylindrical shell 21, promptly can be because of clamping piece 24 off-axis 252, and then make syringe needle group 22 and the pin head set base 23 askew cylindrical shells 21 that place that retract.Therefore; when promoting push rod 25,221 of crooked needle bodies can be blocked by cylindrical shell 21 inwalls, even therefore flexural deformation if want syringe needle group 22 and pin head set base 23 are released that cylindrical shell 21 is reused again; so can't reuse the needle body 221 that has been polluted, more can protect medical personnel's safety.
In the present embodiment, push rod 25 more can have a broken part 253, and it is the less some of diameter on the push rod 25.Treat that high-safety injection tube 20 injections finish, after syringe needle group 22 and pin head set base 23 bounce back to cylindrical shell 21, can utilize broken part 253 that push rod 25 is fractureed, can be repeated to use in order to avoid high-safety injection tube 20.In addition, broken part 25 also can replace a socket part 253 ', utilizes detachable socket part 253 ', and push rod 25 is splitted into two can mutual belled part.
In sum, high-safety injection tube of the present invention has hollow and is offset to clamping piece on the push rod.After injection was discharged syringe fully, the piston of push rod front end supported to the pin head set base, made the distortion of hollow clamping piece to embed second through hole of pin head set base.When retracting push rod, first hook portion and second hook portion of clamping piece promptly can catch on the inwall of second through hole backward, and then make whole syringe needle group and pin head set base be pulled in the cylindrical shell, expose with the needle body of avoiding having polluted and cause acupuncture accident.Compared with prior art, high-safety injection tube of the present invention does not need the inwall of pin head set base to have relative holding section, can utilize clamping piece to finish with the colluding of second through-hole wall of pin head set base and close action, and the clamping piece with two hook portions, it is stronger that it colludes the ability of closing.Moreover clamping piece is offset on the push rod, so when retracting syringe needle group and pin head set base, can make the askew cylindrical shell that places of needle body, avoids reusing.In addition, the easy material all in one piece of clamping piece is arranged, so when being bonding on the push rod, but automated production, reducing the processing procedure cost, and lifting production efficiency.And clamping piece can utilize impact style one-body molded, promoted the production precision of clamping piece greatly, so also increased the yield of product.
The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the scope of claims its equivalent modifications of carrying out or change.
Claims (13)
1. high-safety injection tube comprises:
One cylindrical shell;
One syringe needle group, it has a needle body and a needle holder, and this needle body is arranged at this needle holder, and this needle holder has one first through hole;
One pin head set base, an end of itself and this cylindrical shell links, and this pin head set base has one second through hole, and this syringe needle group is positioned at this second through hole, and this first through hole communicates with this second through hole; And
One push rod, the one end is provided with a piston, direction of propulsion along this push rod has an axis, the piston end of this push rod has a clamping piece, it is characterized in that, this clamping piece is offset to this axis and described clamping piece and described axis and is an angle setting, this clamping piece has a hollow bulb, one first hook portion and one second hook portion, when described push rod is pushed into described pin head set base, this first hook portion and this second hook portion embed this second through hole of this pin head set base, and make it catch on the inwall of this second through hole respectively.
2. high-safety injection tube as claimed in claim 1, wherein, this needle holder and this pin head set base screw togather binding.
3. high-safety injection tube as claimed in claim 2, wherein, this pin head set base engages binding with this cylindrical shell.
4. high-safety injection tube as claimed in claim 1, wherein, this push rod has a broken part.
5. high-safety injection tube as claimed in claim 1, wherein, this push rod has a socket part.
6. high-safety injection tube as claimed in claim 1, wherein, the material of this clamping piece is metal or plastics.
7. high-safety injection tube as claimed in claim 6, wherein, the material of this clamping piece is a rustless steel.
8. high-safety injection tube as claimed in claim 1, wherein, this hollow bulb of this clamping piece is a polygon or a circle.
9. high-safety injection tube as claimed in claim 1, wherein, this clamping piece utilizes impact style one-body molded.
10. high-safety injection tube as claimed in claim 1, wherein, this clamping piece is flat.
11. high-safety injection tube as claimed in claim 1, wherein, this first hook portion and the asymmetric setting of this second hook portion.
12. high-safety injection tube as claimed in claim 1, wherein, this clamping piece has more an offset arm, is offset to this axis in order to assist this clamping piece.
13. high-safety injection tube as claimed in claim 12, wherein, this offset arm and this clamping piece are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100592782A CN100420491C (en) | 2004-06-15 | 2004-06-15 | Safety syringe drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100592782A CN100420491C (en) | 2004-06-15 | 2004-06-15 | Safety syringe drum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1712078A CN1712078A (en) | 2005-12-28 |
| CN100420491C true CN100420491C (en) | 2008-09-24 |
Family
ID=35717983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100592782A Expired - Fee Related CN100420491C (en) | 2004-06-15 | 2004-06-15 | Safety syringe drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100420491C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5575774A (en) * | 1995-10-24 | 1996-11-19 | Chen; Long-Hsiung | Structure of safety hypodermic syringe |
| CN2434003Y (en) * | 2000-07-03 | 2001-06-13 | 王文品 | Retractable device of syringe needle |
| US6344031B1 (en) * | 1989-03-22 | 2002-02-05 | Laurel A. Novacek | Safety syringe needle device with interchangeable and retractable needle platform |
| CN1455689A (en) * | 2000-12-22 | 2003-11-12 | 尼克德尔股份有限公司 | Medical device and locking mechanism therefor |
-
2004
- 2004-06-15 CN CNB2004100592782A patent/CN100420491C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6344031B1 (en) * | 1989-03-22 | 2002-02-05 | Laurel A. Novacek | Safety syringe needle device with interchangeable and retractable needle platform |
| US5575774A (en) * | 1995-10-24 | 1996-11-19 | Chen; Long-Hsiung | Structure of safety hypodermic syringe |
| CN2434003Y (en) * | 2000-07-03 | 2001-06-13 | 王文品 | Retractable device of syringe needle |
| CN1455689A (en) * | 2000-12-22 | 2003-11-12 | 尼克德尔股份有限公司 | Medical device and locking mechanism therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1712078A (en) | 2005-12-28 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 |