CN2710663Y - Improved structure of needle fastening seat for safety syringe tube - Google Patents
Improved structure of needle fastening seat for safety syringe tube Download PDFInfo
- Publication number
- CN2710663Y CN2710663Y CN 200420072851 CN200420072851U CN2710663Y CN 2710663 Y CN2710663 Y CN 2710663Y CN 200420072851 CN200420072851 CN 200420072851 CN 200420072851 U CN200420072851 U CN 200420072851U CN 2710663 Y CN2710663 Y CN 2710663Y
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- CN
- China
- Prior art keywords
- needle
- fastening seat
- needle holder
- injection tube
- seat
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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.)
- Expired - Fee Related
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Abstract
The utility model provides the improved structure of a needle fastening seat for a safety syringe tube, comprising a syringe tube, a needle seat and a fastening seat. Wherein, the inner edge of the syringe tube is respectively provided with a multi-step part and a fastening ring for forming fastening and air seal when the needle seat is assembled and sheathed; a sleeve slot is arranged on the needle seat and extends a guide pipe with a through hole, a groove ring and a penetrated buckled hole are arranged on the periphery, and screws for locking and connecting an injection needle are arranged on the front end of the sleeve slot; the fastening seat is in a cylinder shape, a sleeve hole for tabling the push rod is arranged on the center, and a convex edge ring is arranged on the exterior edge, which enables the push rod to push out physic liquor from the syringe tube via the needle; the push rod can be combined in the sleeve hole of the fastening seat, and forward pushes the fastening seat to enable the convex edge ring to hook the buckled hole of the needle seat, and the needle seat and the needle to be pull in the syringe tube. The improved structure of a needle fastening seat for a safety syringe tube has the advantages of stably combination of the needle seat and the syringe tube and good air seal; after injection, the injection needle is successfully pulled back in the syringe tube, which prevents the pollution of the needle after injection and can not influence stable effect when injection, and the effect of complete air seal.
Description
Technical field
This utility model is the syringe needle fastening seat structure-improved of relevant a kind of high-safety injection tube, especially refer to a kind ofly contract to injection tube in after injection is used, injection needle can being retracted, pollute and do not influence needle holder and combine the fastening seat structure that firmly reaches air tightness with injection tube to prevent to inject the back syringe needle.
Background technology
The syringe cylinder of traditional type is after injection is used, usually will inject syringe needle and take off separately destruction, after the syringe needle of injecting takes off, often cause pinprick infectious disease problem, so for preventing the secondary utilization of syringe needle, and the syringe needle that separates is pinprick infectious disease and the anxiety of pollution is arranged still, therefore, the syringe cylinder design that syringe needle after the injection use is returned to injection tube inside is arranged again, though improving the aforementioned conventional formula, this kind project organization separately destroys the problem that syringe needle still has the anxiety of pinprick infectious disease and pollution, but because the modular design of needle holder and injection tube, must possess in conjunction with the time firm and air tightness, also need reach simultaneously and retract needle holder and move requirement smoothly, so about this type of Improvement type syringe cylinder structural design, the exploitation of production mould even is a problem that needs to be resolved hurrily, and the effect of the injection tube of shortening head is not attained ideal as yet in therefore existing at present can the retracting.
Summary of the invention
Main purpose of the present utility model is the defective that overcomes above-mentioned prior art, provide a kind of syringe needle of high-safety injection tube to tighten up the joint chair structure-improved, it has needle holder and combines firmly, has good air-tightness with injection tube, and injection needle is retracted in the injection tube after injection is used smoothly, and syringe needle pollutes and do not influence and firmly reaches complete gastight effect when injection is used after preventing to inject.
The purpose of this utility model realizes by following technical proposals, the syringe needle of high-safety injection tube provided by the utility model tightens up the joint chair structure-improved and comprises an injection tube, a needle holder and a fastening seat, wherein, described injection tube inner edge is respectively equipped with and forms strangulation and airtight when multistage portion, snap ring are nested with for the needle holder combination; This needle holder is provided with a grooving, extends the conduit of a tool through hole by grooving, the button hole that periphery is provided with the groove ring and runs through, and the cover front of the slot then is provided with the screw thread for the sealed connection of injection needle; Fastening seat then is tubular, be provided with the trepanning that closes for the push rod down in central authorities, outer rim is provided with flanged ring, make push rod with medicinal liquid by injection tube after syringe needle is released, this push rod is able to down and closes trepanning in fastening seat, and pass the flanged ring that fastening seat makes fastening seat forward and collude the button hole that is held in needle holder, needle holder and syringe needle are drawn in the injection tube.
The rank portion of described injection tube when needle holder is inserted in injection tube, replaces strong fix and the airtight position that forms injection direction mutually with the needle holder leading edge.
Described fastening seat structure, needle holder wherein be provided with around groove, the flanged ring support that the part groove provides the needle holder below to be subjected to fastening seat enlarges the space of outer rim deformation, the part groove is then after the needle holder outer rim enlarges deformation, and engage mutually with snap ring in the injection tube, make needle holder and injection tube constitute the strangulation positioning action.
Described fastening seat structure, fastening seat trepanning wherein is scalariform, close in order to down with push rod, outer rim is provided with flanged ring as the support needle holder and collude the button hole that is held in needle holder, and the cover hole peripheral be provided with around groove, ring between trepanning and groove encloses several opening grooving, with the system elastic force of going into as medicine liquid channel and push rod down.
Other purpose of the present utility model, advantage and novel characteristics of the present utility model will the more obvious understandings of middle from the following detailed description and related drawings meeting.
Description of drawings
Fig. 1 is a three-dimensional exploded view of the present utility model;
Fig. 2 is needle holder of the present utility model and fastening seat schematic perspective view;
Fig. 3 is a combination generalized section of the present utility model;
Fig. 4 is that action of injection of the present utility model is implemented illustration;
Fig. 5 is that this utility model Button Block engages the enforcement illustration with needle holder;
Fig. 6 implements illustration for syringe needle of the present utility model retracts action.
The drawing reference numeral explanation:
1 injection tube; 11 rank portions; 12 snap rings; 13 concavo-convex grooves; 2 needle holder; 21 groovings; 22 conduits; 23 through holes; 24 button holes; 25 grooves; 26 grooves; 27 screw threads; 28 concavo-convex grooves; 29 grooves; 3 fastening seats; 31 trepannings; 311 rank portions; 32 grooves, 33 flanged rings; 4 syringe needles; 5 push rods; 51 push rod rings; 6 pins lid.
The specific embodiment
Please consult Fig. 1, Fig. 2 simultaneously, the syringe needle of high-safety injection tube provided by the utility model tightens up the joint chair structure-improved and mainly is provided with injection tube 1, needle holder 2 and fastening seat 3, wherein, the inwall of this injection tube 1 is provided with rank portion 11 and floating prominent snap ring 12, concavo-convex groove 13; This needle holder 2 is provided with a grooving 21, grooving 21 front ends extend a conduit 22, establish the through hole 23 that connects with grooving 21 with in conduit 22, the periphery of needle holder 2 is provided with the button hole 24 that runs through, outer rim is provided with groove 25,26,29, the leading edge inwall then is provided with for the sealed screw thread 27 of syringe needle 4, and outer rim is provided with the concavo-convex groove 28 with the concavo-convex groove 13 corresponding engagings of injection tube 1 inner edge;
Fastening seat 3 is tubular, be provided with the trepanning 31 that closes for push rod 5 roses in central authorities, establish with rank portion 311 at trepanning 31, and be provided with groove 32 in trepanning 31 peripheries, the ring that trepanning 31 and groove are 32 encloses several opening grooving, and the outer rim stage casing is provided with corresponding to needle holder 2 button holes 24 and colludes the flanged ring of holding 33;
By the combination by aforementioned components, this needle holder 2 is embedded at injection tube 1 front opening place, by the rank portion 11 of needle holder 2 against syringe 1 inwall upper end, forms location and airtight position, and two concavo-convex grooves 13,28 are the engaging location mutually; Fastening seat 3 just makes and is nested with the grooving 21 root edge places that are positioned at needle holder 2, therefore, the flanged ring 33 of fastening seat 3 has the effect that outside support needle holder 2 outer rims are opened deformation outward, needle holder 2 is then because of being provided with groove 26,29 for an outer deformation, causing needle holder 2 lower edges to become outer opens, the groove ring 25 of needle holder 2 is engaged mutually with the snap ring 12 of injection tube 1 inwall just, constitute powerful strangulation effect;
When injection is used, push rod 5 is released through conduit 22 medicinal liquid of syringe cylinder by syringe needle 4, after push rod 5 advances and is embedded in the trepanning 31 of fastening seat 3, the push rod ring 51 of push rod 5 can be pushed ahead displacement (as Fig. 3 with the fastening seat 3 that is placed in the grooving 21, shown in Figure 4), and flanged ring 33 displacement and collude the button hole 24 of holding needle holder 2 forward, the former snap ring 12 and groove ring 25 that is subjected to the flanged ring 33 outside stretching pushing and withstanding of fastening seat 3 and engages mutually, then because of flanged ring 33 displacement forward, lose outer power of opening pushing and withstanding, and make needle holder inclination deformation recovery, snap ring 12 engages (as shown in Figure 5) with 25 disengagings of groove ring, this moment can be with push rod 5 post-tensionings and with needle holder 2, syringe needle 4 and fastening seat 3 retract in the injection tube 1, to prevent the pollution of syringe needle 4.
See also Fig. 4, this utility model by the promotion of push rod 5, makes the medicinal liquid in the injection tube 1 be disengaged by syringe needle 4 through needle holder 2, to constitute the action of injection when using.
See also Fig. 5, this utility model is after medicinal liquid disengages fully, this push rod 5 promptly enters in the trepanning 31 of fastening seat 3, because trepanning 31 peripheries are provided with groove 32, the ring that trepanning 31 and groove are 32 encloses several opening grooving, the formation buffering makes push rod 5 be easy to enter trepanning 31 and constitute down by rank portion 311 and closes, and in down close in the process fastening seat 3 continued before pushing move, make the flanged ring 33 of fastening seat 3 collude the button hole 24 that is held in needle holder 2, make fastening seat 3 and needle holder 2 be able to closely engage, and because of flanged ring 33 displacement forward, make of the snap ring 12 disengaging engagings of the groove ring 25 of needle holder 2, make to be beneficial to retracting of syringe needle 4 by injection tube 1.
As shown in Figure 6, be embedded in the grooving 21 of needle holder 2 when fastening seat 3 after, push rod 5 can be retracted, be held in needle holder 2 because the flanged ring 33 of fastening seat 3 colludes, therefore be able to syringe needle 4, needle holder 2, fastening seat 3 are returned in the injection tube 1 simultaneously, for the pollution that prevents syringe needle 4.
In sum, fastening seat and the needle holder of this utility model to be provided with flanged ring, button hole has strangulation and gastight function, and makes injection tube be able to easily syringe needle be retracted after injection is used, and prevents the pollution of syringe needle.
This utility model is described by the drawings in detail of most preferred embodiment.Ripely can derive many variations and needn't deviate from category of the present utility model from most preferred embodiment in this technical staff.Therefore, the unlikely restriction of most preferred embodiment category of the present utility model.Category of the present utility model is defined in the claimed claim of the application.
Claims (3)
1, a kind of syringe needle fastening seat structure-improved of high-safety injection tube, it comprises an injection tube, a needle holder and a fastening seat, it is characterized in that
Described injection tube, its inwall are provided with rank portion and floating prominent snap ring;
Described needle holder is placed on injection tube front end inner edge place, and its central authorities are provided with a grooving, and the grooving extension is provided with a conduit, has the through hole that connects with grooving in conduit, and the needle holder periphery then is provided with the button hole that runs through, and is provided with several grooves in outer peripheral edges;
Described fastening seat is tubular, is located at the grooving of needle holder, and its central authorities are provided with the trepanning that closes for the push rod down, establishes with rank portion in trepanning, and is provided with groove in the cover hole peripheral, and outer rim then is provided with the flanged ring corresponding to the needle holder button hole.
2, the syringe needle fastening seat structure-improved of high-safety injection tube as claimed in claim 1, it is characterized in that fastening seat is placed on the grooving lower edge of needle holder, described needle holder is subjected to the flanged ring stretching of fastening seat to open pushing and withstanding outward, and a groove ring of needle holder engages with the snap ring of injection tube.
3, the syringe needle fastening seat structure-improved of high-safety injection tube as claimed in claim 2 is characterized in that the push rod down closes the trepanning in fastening seat, and fastening seat is moved by preceding pushing, and the groove ring engages the strangulation location with the snap ring disengaging of injection tube like this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420072851 CN2710663Y (en) | 2004-06-30 | 2004-06-30 | Improved structure of needle fastening seat for safety syringe tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420072851 CN2710663Y (en) | 2004-06-30 | 2004-06-30 | Improved structure of needle fastening seat for safety syringe tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2710663Y true CN2710663Y (en) | 2005-07-20 |
Family
ID=34874159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420072851 Expired - Fee Related CN2710663Y (en) | 2004-06-30 | 2004-06-30 | Improved structure of needle fastening seat for safety syringe tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2710663Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA008581B1 (en) * | 2006-02-21 | 2007-06-29 | Чих-Куанг Хсу | Safety syringe |
| CN102813982A (en) * | 2011-06-07 | 2012-12-12 | 王祖扬 | Inner needle seat structure for safety self-destruction syringe |
| CN102886094A (en) * | 2011-07-18 | 2013-01-23 | 王祖扬 | Needle-replaceable internal needle holder structure for safety self-destructive injector |
| WO2013127039A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Replaceable-needle inner needle base structure for use in safe self-destructing syringe |
| WO2013127037A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle retractable-type replaceable-needle safe self-destructing syringe |
| CN102813982B (en) * | 2011-06-07 | 2016-11-30 | 王祖扬 | Inner needle seat structure for safety self-destruction syringe |
-
2004
- 2004-06-30 CN CN 200420072851 patent/CN2710663Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA008581B1 (en) * | 2006-02-21 | 2007-06-29 | Чих-Куанг Хсу | Safety syringe |
| CN102813982A (en) * | 2011-06-07 | 2012-12-12 | 王祖扬 | Inner needle seat structure for safety self-destruction syringe |
| CN102813982B (en) * | 2011-06-07 | 2016-11-30 | 王祖扬 | Inner needle seat structure for safety self-destruction syringe |
| CN102886094A (en) * | 2011-07-18 | 2013-01-23 | 王祖扬 | Needle-replaceable internal needle holder structure for safety self-destructive injector |
| WO2013010376A1 (en) * | 2011-07-18 | 2013-01-24 | 倍安德普医疗科技（上海）有限公司 | Inner needle seat of exchangeable needle for safety self-destructing syringe |
| WO2013127039A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Replaceable-needle inner needle base structure for use in safe self-destructing syringe |
| WO2013127037A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle retractable-type replaceable-needle safe self-destructing syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |