CN102284113A - Safe self-destructive injector with replaceable needle head and locking structure - Google Patents
Safe self-destructive injector with replaceable needle head and locking structure Download PDFInfo
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- CN102284113A CN102284113A CN2010102017530A CN201010201753A CN102284113A CN 102284113 A CN102284113 A CN 102284113A CN 2010102017530 A CN2010102017530 A CN 2010102017530A CN 201010201753 A CN201010201753 A CN 201010201753A CN 102284113 A CN102284113 A CN 102284113A
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- connection block
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- connection seat
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Abstract
The invention discloses a safe self-destructive injector with a replaceable needle head and a locking structure, which is characterized in that the cavity of an outer sleeve close to the end part is provided with an outer connection seat, one end of the outer connection seat is sleeved with a needle head, the other end of the outer connection seat is sleeved with an inner connection seat, the end part of a core rod forms a guided/reversely-drawn locking rod, the guided/reversely-drawn locking rod and the core rod are integrated, the outer connection seat is shaped like a cylinder, the outer wall of the outer connection seat is provided with annular raised ribs for the outer connection seat, the annular raised ribs for the outer connection seat and the outer connection seat are integrated, and the inner wall of the cavity of the outer sleeve is provided with inner annular grooves matched with the annular raised ribs for the outer connection seat. All the components of the product are compact in structure and can achieve a complete sealing effect without additional sealing components; and each component of the product can be subjected to one-step demolding and can be sequentially subjected to back-part automated assembly, thereby effectively solving the problem on the fully-automated large-scale production of the safe self-destructive injector. Compared with the prior art, the invention has obvious substantive characteristics and remarkable progress.
Description
Technical field:
The present invention relates to technical field of medical, specifically a kind of exchangeable needle has the safety self-destructing syringe of latch-up structure, particularly its mechanical connecting structure.
Background technology:
Documents one, application number: 200610090940.X, publication number: CN101134123, the patentee: Wang Xiping, this case disclose " a kind of inner contraction type automatic safety syringe ", and it is by syringe cylinder, the needle stand of band puncture needle tubing, the push rod of band hollow pipe, compositions such as spring, piston.The elastic claw of needle stand is bearing on the step surface of needle stand front end endoporus; Promote the push rod reach after the injection again, the semicircular flanges of piston end surface makes hub flange break away from syringe step bearing-surface, thereby makes needle stand front end pawl point under spring action along contracting in the syringe front end transition inclined-plane, puncture, cutting piston thin film ring, and drop in the push rod hollow.
Documents two, application number: 200710156760.1, publication number: CN101219246, patentee: Wujiang Fangxia enterprise information consultation Co., Ltd., this case discloses a kind of " rotation retractable safety syringe ", and it comprises needle tubing, push rod, needle stand, syringe needle is characterized in that needle stand joint and syringe have groove to do to agree with, and adopt the elastoplast piston, syringe needle is by needle stand, and needle tubing is formed.
From above-mentioned be that disclosed technical scheme is as can be seen the documents, existing disposable safety self-ruined syringe complex structure, the assembly technology complexity can't realize extensive full-automatic assembling production, problems can occur in actual die sinking is gone into operation, big as the medicinal liquid residual quantity, gasket factor is low, and safety coefficient is low, occurs maloperation easily, phenomenons such as locking mechanism is malfunctioning appear easily, so still need the internal structure of existing safety self-destructing syringe is further improved.
Summary of the invention:
The purpose of this invention is to provide the safety self-destructing syringe that a kind of exchangeable needle has latch-up structure, it adopts inside and outside Connection Block structure, can lock voluntarily each other, cooperate the guiding of the stem securing rod structure of pulling back, realize the effect that syringe needle head integral body is returned, the product overall structure is simple, required sealing member is few, and each minute body component die sinking technology is simple to be cooperated closely, can realize the full-automatic assembling in rear portion, stable working state has overcome the shortcoming and defect that exists in the prior art.
To achieve these goals, technical scheme of the present invention is: a kind of exchangeable needle has the safety self-destructing syringe of latch-up structure, it mainly comprises overcoat and syringe needle, be provided with core bar in the overcoat, the core bar place is socketed with plug, it is characterized in that: described overcoat inner chamber is provided with outer Connection Block near the place, end, outer Connection Block one end is socketed with syringe needle, the other end of outer Connection Block and interior Connection Block socket, the end of core bar forms the securing rod of pulling back that leads, pull back securing rod and core bar of guiding is into a single integrated structure, described outer Connection Block becomes cylindric, outer Connection Block outer wall is provided with outer Connection Block ring-type convex tendon, outer Connection Block ring-type convex tendon is into a single integrated structure with outer Connection Block, and cavity wall is provided with the interior annular recess that matches with outer Connection Block ring-type convex tendon in the overcoat, the spacing snap ring of Connection Block in the cavity wall place is provided with in the interior Connection Block, spacing snap ring of interior Connection Block and interior Connection Block are into a single integrated structure, and the described guiding securing rod outer wall of pulling back is provided with the spacing snap ring of securing rod.
The invention discloses the safety self-destructing syringe that a kind of exchangeable needle has latch-up structure, the product reasonable integral structure, it adopts split type inside and outside Connection Block structure, has locking mechanism voluntarily each other, cooperate the guiding of the stem securing rod structure of pulling back, can realize that the integral body of needle section pulls back, structure is tight between each parts of product, need not unnecessary seal member, just can realize complete sealing effectiveness, utilize the sealing effectiveness of the chucking of the pressure between cavity wall structure realization syringe in outer Connection Block and the overcoat, each parts of product all can a demoulding, can realize that in assembly technology each parts can carry out the assembling of rear portion automatization successively, efficiently solve the difficult problem of the full-automatic large-scale production of safety self-destructing syringe, product general safety coefficient height, realize precision-fit between each parts, stop to operate malfunctioning manifesting fully, the specification of this product has 2ml, 2.5ml, 3ml, 5ml, 10ml, 20ml, 50ml, product has the good practicability energy, compared to existing technologies, have outstanding substantive distinguishing features and marked improvement.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is a partial enlarged drawing among Fig. 1
View when Fig. 3 finishes for the present invention's injection
Fig. 4 is a partial enlarged drawing among Fig. 3
Fig. 5 is the present invention's lock-out state sketch map of pulling back
Fig. 6 is a partial enlarged drawing among Fig. 5
Fig. 7 is a safety self-destruct view of the present invention
Fig. 8 is a jacket structure sketch map of the present invention
Fig. 9 is a core bar structure sketch map of the present invention
Figure 10 is a plug structural representation of the present invention
Figure 11 is the outer Connection Block structural representation of the present invention
Figure 12 is Connection Block structural representation in the present invention
Figure 13 is a general assembly drawing of the present invention
The specific embodiment:
Below in conjunction with drawings and Examples the present invention is further described.
The present invention mainly comprises overcoat 1 and syringe needle 2, be provided with core bar 3 in the overcoat 1, core bar 3 places are socketed with plug 4, plug 4 can be fitted with overcoat 1 inner chamber inner wall sealing, it is different from prior art and is: described overcoat 1 inner chamber is provided with outer Connection Block 5 near the place, end, outer Connection Block 5 one end sockets or be connected with syringe needle 2, the other end of outer Connection Block 5 and 6 sockets of interior Connection Block, the end of core bar 3 forms the securing rod 7 of pulling back that leads, pull back securing rod 7 of guiding is into a single integrated structure with core bar 3,5 one-tenth of described outer Connection Blocks are cylindric, outer Connection Block 5 outer walls are provided with outer Connection Block ring-type convex tendon 8, outer Connection Block ring-type convex tendon 8 and outer Connection Block 5 are into a single integrated structure, cavity wall is provided with the interior annular recess 9 that matches with outer Connection Block ring-type convex tendon 8 in the overcoat 1, the spacing snap ring 10 of Connection Block in the cavity wall places are provided with in the interior Connection Block 6, the spacing snap ring 10 of interior Connection Block is into a single integrated structure with interior Connection Block 6, and described guiding securing rod 7 outer walls of pulling back are provided with the spacing snap ring 11 of securing rod.
In the specific implementation, described outer Connection Block 5 is cylindric, its by trocar sheath 12 and inner sleeve 13 by horizontal connecting ring 14 structure that links into an integrated entity, inner sleeve 13 protrudes in trocar sheath 12, trocar sheath 12 inwall places are provided with female thread 15, inner sleeve 13 is international standard 6:100 taper and matches with syringe needle 2, and outer wall place, inner sleeve 13 lower end is provided with inner sleeve position limiting convex ring 16, and the thickness of trocar sheath 12 is 0.1mm-0.8mm.
In the specific implementation, Connection Block 6 is cylindric in described, cavity wall is provided with the interior Connection Block position limiting convex ring 17 that matches with inner sleeve position limiting convex ring 16 near upper shed place in the interior Connection Block 6, interior Connection Block 6 outer walls form step 18, interior Connection Block 6 tops are stuck in the gap between trocar sheath 12 and the inner sleeve 13, the gap is filled up, and with trocar sheath 12 outer supports.
In the specific implementation, the spacing snap ring of described securing rod 11 surfaces form inclined-plane 19.
In the specific implementation, described core bar 3 places are provided with four reinforcements 20 that present 90 degree angles mutually, and each reinforcement place is provided with vee 21.
In the specific implementation, described overcoat 1 upper end opening part is provided with spacing internal projecting ring 22.
In the specific implementation, spacing snap ring 10 upper surfaces of described interior Connection Block form back slope 24.
In actual use, as shown in fig. 1, be the syringe initial condition, needle section matches with the female thread structure at outer Connection Block place, be threaded onto on the inner sleeve of international standard tapering, syringe needle and inner sleeve all meet the national universal standard (this structure can realize the exchangeable needle structure), when original state, interior Connection Block upper end props up horizontal connecting ring, and place in the gap between trocar sheath and the inner sleeve, the step of interior Connection Block outer wall then props up the trocar sheath bottom, both cooperate closely, cavity wall fits tightly in outer Connection Block outer wall and the overcoat, the outer Connection Block ring-type convex tendon of outer Connection Block outer wall just in time is stuck in the interior annular recess of cavity wall in the overcoat, make that outer Connection Block can bear the motive force that is no less than 30N, form relatively stable structure at the overcoat inner chamber, the overall diameter of outer Connection Block ring-type convex tendon is greater than interior annular recess interior diameter 0.01mm-0.3mm, this structural design has also guaranteed the sealing effectiveness of outer Connection Block and overcoat inner chamber, when initial condition, outer Connection Block and interior Connection Block are run through in the guiding securing rod front portion of pulling back, and substantial whole outer Connection Block and interior Connection Block inner chamber (it is residual to reduce medicinal liquid), at this moment, the spacing snap ring of Connection Block below in the spacing snap ring of securing rod places, the overall diameter of the spacing snap ring of securing rod is greater than the spacing snap ring interior diameter of interior Connection Block, and syringe needle is socketed with sheath 23 outward.
Start injection behind the suction medicinal liquid, promote core bar forward, in the spacing snap ring of securing rod upwards props up during the spacing snap ring of Connection Block, because the spacing snap ring of securing rod surface forms the inclined-plane, produce guide effect, so slightly firmly just can slip over herein, after injecting liquid drug is finished, as shown in Figure 3, the spacing snap ring of securing rod has skimmed over the interior spacing snap ring of Connection Block, be positioned at the Connection Block intracavity, because the spacing snap ring upper surface of interior Connection Block forms back slope, so the spacing snap ring of securing rod is difficult to skid off from interior Connection Block inner chamber again.
As shown in Figure 5, pull back core bar, under guiding is pulled back the effect of securing rod, interior Connection Block is pulled rearward moving, after interior Connection Block slides a segment distance, the inner sleeve position limiting convex ring at outer wall place, inner sleeve lower end and interior Connection Block position limiting convex ring prop up mutually, at this moment, gap between the internal and external casing occurs once more, the outer tension force that acts on the trocar sheath place disappears, so outer Connection Block ring-type convex tendon and interior annular recess are easy to throw off, and pull back core bar again, outer Connection Block also begins to be subjected to displacement backward under the pulling force effect of interior Connection Block conduction, bring whole syringe needle part into the overcoat inner chamber together, just realized the syringe safe operation, at this moment, syringe device syringe needle part can't reset into original state.
As shown in Figure 7, stem pulled out overcoat after, just core bar can be fractureed along vee, realize whole syringe safe self-destruction operation.
Claims (8)
1. an exchangeable needle has the safety self-destructing syringe of latch-up structure, it mainly comprises overcoat (1) and syringe needle (2), be provided with core bar (3) in the overcoat (1), core bar (3) locates to be socketed with plug (4), it is characterized in that: described overcoat (1) inner chamber is provided with outer Connection Block (5) near the place, end, outer Connection Block (5) one ends are socketed with syringe needle (2), the other end of outer Connection Block (5) and interior Connection Block (6) socket, the end of core bar (3) forms the securing rod (7) of pulling back that leads, pull back securing rod (7) and core bar (3) of guiding is into a single integrated structure, it is cylindric that described outer Connection Block (5) becomes, outer Connection Block (5) outer wall is provided with outer Connection Block ring-type convex tendon (8), outer Connection Block ring-type convex tendon (8) is into a single integrated structure with outer Connection Block (5), the interior cavity wall of overcoat (1) is provided with the interior annular recess (9) that matches with outer Connection Block ring-type convex tendon (8), the interior cavity wall of interior Connection Block (6) place is provided with the interior spacing snap ring of Connection Block (10), the spacing snap ring of interior Connection Block (10) and interior Connection Block (6) are into a single integrated structure, and described guiding securing rod (7) outer wall of pulling back is provided with the spacing snap ring of securing rod (11).
2. a kind of exchangeable needle as claimed in claim 1 has the safety self-destructing syringe of latch-up structure, it is characterized in that: described outer Connection Block (5) is cylindric, its by trocar sheath (12) and inner sleeve (13) by horizontal connecting ring (14) structure that links into an integrated entity, inner sleeve (13) protrudes in trocar sheath (12), trocar sheath (12) inwall place is provided with female thread (15), inner sleeve (13) is international standard 6:100 taper and matches with syringe needle (2), outer wall place, inner sleeve (13) lower end is provided with inner sleeve position limiting convex ring (16), and the thickness of trocar sheath (12) is 0.1mm-0.8mm.
3. a kind of exchangeable needle as claimed in claim 1 has the safety self-destructing syringe of latch-up structure, it is characterized in that: Connection Block (6) is cylindric in described, the interior cavity wall of interior Connection Block (6) is provided with the interior Connection Block position limiting convex ring (17) that matches with inner sleeve position limiting convex ring (16) near upper shed place, interior Connection Block (6) outer wall forms step (18), interior Connection Block (6) top is stuck in the gap between trocar sheath (12) and the inner sleeve (13), the gap is filled up, and with the outer support of trocar sheath (12).
4. a kind of exchangeable needle as claimed in claim 1 has the safety self-destructing syringe of latch-up structure, it is characterized in that: the spacing snap ring of described securing rod (11) surface forms inclined-plane (19).
5. a kind of exchangeable needle as claimed in claim 1 has the safety self-destructing syringe of latch-up structure, it is characterized in that: described core bar (3) locates to be provided with four reinforcements (20) that present 90 degree angles mutually, and each reinforcement place is provided with vee (21).
6. a kind of exchangeable needle as claimed in claim 1 has the safety self-destructing syringe of latch-up structure, it is characterized in that: described overcoat (1) upper end opening part is provided with spacing internal projecting ring (22).
7. a kind of exchangeable needle as claimed in claim 1 has the safety self-destructing syringe of latch-up structure, it is characterized in that: the overall diameter of described outer Connection Block ring-type convex tendon (8) is greater than interior annular recess (9) interior diameter 0.01mm-0.3mm.
8. a kind of exchangeable needle as claimed in claim 1 has the safety self-destructing syringe of latch-up structure, it is characterized in that: the spacing snap ring of Connection Block (10) upper surface forms back slope (24) in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102017530A CN102284113A (en) | 2010-06-17 | 2010-06-17 | Safe self-destructive injector with replaceable needle head and locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102017530A CN102284113A (en) | 2010-06-17 | 2010-06-17 | Safe self-destructive injector with replaceable needle head and locking structure |
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| Publication Number | Publication Date |
|---|---|
| CN102284113A true CN102284113A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102017530A Pending CN102284113A (en) | 2010-06-17 | 2010-06-17 | Safe self-destructive injector with replaceable needle head and locking structure |
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|---|---|
| CN (1) | CN102284113A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553036A (en) * | 2012-01-19 | 2012-07-11 | 陆盘中 | Two-stage separate type safe self-destruction syringe |
| CN103272308A (en) * | 2013-05-15 | 2013-09-04 | 浙江康泰医疗器械有限公司 | Novel steel needle self-retracting injector cylinder |
| CN103372251A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Needle seat pull-back type safe self-locking self-destruction syringe |
| WO2013159255A1 (en) * | 2012-04-27 | 2013-10-31 | Zhang Linfeng | Retractable-type safe self-locking-type self-destructing syringe |
| CN105771036A (en) * | 2016-03-29 | 2016-07-20 | 陆盘中 | Disposable locking safety auto-disable syringe |
| CN114397168A (en) * | 2022-03-28 | 2022-04-26 | 深圳市开颜医疗器械有限公司 | Internet-based body fluid balance intelligent health detection equipment and detection method |
-
2010
- 2010-06-17 CN CN2010102017530A patent/CN102284113A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553036A (en) * | 2012-01-19 | 2012-07-11 | 陆盘中 | Two-stage separate type safe self-destruction syringe |
| CN103372251A (en) * | 2012-04-27 | 2013-10-30 | 张林锋 | Needle seat pull-back type safe self-locking self-destruction syringe |
| WO2013159254A1 (en) * | 2012-04-27 | 2013-10-31 | Zhang Linfeng | Needle base retractable-type safe self-locking-type self-destructing syringe |
| WO2013159255A1 (en) * | 2012-04-27 | 2013-10-31 | Zhang Linfeng | Retractable-type safe self-locking-type self-destructing syringe |
| CN103272308A (en) * | 2013-05-15 | 2013-09-04 | 浙江康泰医疗器械有限公司 | Novel steel needle self-retracting injector cylinder |
| CN105771036A (en) * | 2016-03-29 | 2016-07-20 | 陆盘中 | Disposable locking safety auto-disable syringe |
| CN114397168A (en) * | 2022-03-28 | 2022-04-26 | 深圳市开颜医疗器械有限公司 | Internet-based body fluid balance intelligent health detection equipment and detection method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111221 |