CN101411905A - Needle head for safety syringe - Google Patents
Needle head for safety syringe Download PDFInfo
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- CN101411905A CN101411905A CNA2007100470789A CN200710047078A CN101411905A CN 101411905 A CN101411905 A CN 101411905A CN A2007100470789 A CNA2007100470789 A CN A2007100470789A CN 200710047078 A CN200710047078 A CN 200710047078A CN 101411905 A CN101411905 A CN 101411905A
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- needle stand
- needle
- fin
- sheath
- stand
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Abstract
The invention discloses a needle for a safety syringe, which is characterized in that a hub consists of an upper hub and a lower hub; the lower part of the upper hub is arranged in the lower hub; the outer wall of the upper part of the upper hub is provided with four wings; an included angle of 45 degrees is formed between two wings; the wings are symmetrical in pair; the side edges of the wings are fixed on the outer wall of the upper hub; the bottom edges of the wings lean against the upper end part of the lower hub; the total length of connecting lines among the wings is between 3 and 9 millimeters; and the length of the wings is between 1.5 and 15 millimeters. The needle is quick and convenient to assemble, can achieve high degree automatic production, effectively improves production efficiency, reduces manufacturing cost, has a reasonable integral structure, and avoids accidentally injuring medical staff and other correlative staff during operation.
Description
Technical field:
The present invention relates to technical field of medical, a kind of specifically syringe needle that is used for safety injector, particularly its mechanical connecting structure.
Background technology:
At present, disposable syringe is used in a large number in hospital, after syringe uses up, medical personnel are when handling depleted syringe, can sting medical personnel on hand once careless syringe needle slightly, because the syringe needle tube outer wall has residual blood samples of patients, be easy to the patient on one's body virus or antibacterial along with the syringe after using infects to medical personnel, and cause medical personnel to catch an illness or death, and these malpracticees, often there is what is heard various countries, particularly catching the innate immunity insufficiency disorder time group virus that can't treat at present is HIV (human immunodeficiency virus) etc., medical personnel's personal safety is arrived in serious threat, the continuous generation of this type of accident thereupon, and hospital just brings into use disposible safety syringe.
The syringe needle of existing safety injector is to be fixed in injector cartridge tube neck inside in the close-fitting mode, yet, assembling hour hands head part is all assembled forward from the rear portion, assembling procedure is very complicated, in addition, conventional injector is in order to bear when injection from rear end medicinal liquid pressure, make injector cartridge tube cervical part of esophagus into pre-small post-large cone-shaped, external so as to stopping that needle holder skids off syringe cylinder forward, yet, pre-small post-large cone-shaped internal part, make needle holder successively slip in the injector cartridge easily, industrial circle is for solving this type of problem, now all from strengthening needle holder, the close-fitting power of syringe cylinder inwall is set about, yet, strengthen close-fitting power, but cause needle holder to be assembled in the interior difficulty of syringe cylinder neck, and, existing needle holder, injector cartridge is that the plastic cement with multi-point mould injects mold injection and goes out molding, since each die cavity inject environment (running channel position for example, penetrate temperature, rate of cooling etc.) be not identical completely, also ubiquity diversity between several moulds when adding mass production, therefore inject each needle holder of back, injector cartridge is difficult to its precision size of control, the close-fitting power of the two still is difficult for grasping, disqualification rate is higher, very perplexs industrial circle.
Documents one, application number: 01141707.2, notification number: CN1406643, patentee: Luo Bizhang, disclose a kind of " needle holder of safety injector " in this case, its principal claim content is: the present invention mainly comprises injection tube, needle holder and pressure rings.The joint portion of needle holder leading portion is fixedly arranged in the little inside diameter of injection tube leading portion, and the holding section of back segment is provided with short slot, and the short slot content is provided with movable piece, and movable piece links sheet with the rear and is connected with on the holding section.Pressure rings is sheathed between the shoulder and flange of injection tube back segment large diameter portion inwall, and just in time corresponding to needle holder back segment holding section.Pressure rings inwardly is convexly equipped with shell fragment in corresponding short slot place, impels movable piece slightly inwardly outstanding.
Documents two, the patent No.: ZL94103945.5, notification number: CN1100958, patentee: Inviro Medical Devices Ltd., a kind of " safety injector with needle guard and recoverable syringe needle " disclosed in this case, its principal claim content is: a kind of syringe, comprise a plunger and joint elements that have syringe needle, and these joint elements are tightened against the end of needle tubing.Joint elements and plunger respectively carry the syndeton that matches, and they can rotate with respect to needle tubing together when joint elements and plunger are engaged with each other, and syringe needle is withdrawn in the needle tubing.The surface of matching on needle guard and the needle stand can engage one another, and only will unscrew the opposite moment of torsion of direction with joint elements and be applied on the joint elements.Needle guard rotates in opposite direction, and the moment of torsion that joint elements are applied is not enough to the end of joint elements from needle tubing unscrewed.
Documents three, application number: 971900604, notification number: CN1178474, patentee: Specialized Health Products, Inc., a kind of " injector for medical purpose and self-retracting needle apparatus " disclosed in this case, its principal claim content is: a compositions, comprise an injector for medical purpose and an extended and self-retracting medical needle apparatus, described compositions comprises: a syringe cylinder part, comprise an elongate hollow cylindrical part and the end closed portion with an inner surface, the latter also has an inner surface; A plunger assembly is positioned at this hollow cylindrical part to small part, this assembly liquid containing space of formation that combines with this syringe cylinder, and the latter's volume can change with respect to reorientating of this plunger assembly because of this barrel part; This space to small part is limited by described inner surface; Described plunger assembly comprises: an elongate hollow shell, have an outer surface and one first end and one second end, the size of this outer surface allows it contactlessly to slide in described cylindrical form interior surface, this first end is placed within the described tube, and this second end is relevant with stretching out of described device; Described shell further comprise one can be by the lower part, the latter can be approaching from this barrel part outside by user; A stopper that cooperates certain locking mechanism, the arrangement of this stopper can be blocked it and can be pressed the position with this actual alternative this locking mechanism is arranged after this device stretches out; This extended and self-retracting medical needle apparatus comprises: an elastic hose, link to each other with this first end of described shell a rear end, and after this device stretches out, when the available use of this device, provide the retracting force and a liquid communication channel between a medical needle and this liquid containing space of a storage at least; A sleeve pipe mechanism, comprise a rear portion hose connector, a locking mechanism that can discharge connection and cooperate with this stopper, this connector can be connected this device securely with the front end in described flexible pipe ground, this connection is connected a drawing mechanism with described device.
This shows, still there are many defectives in above-mentioned existing safety injector with the syringe needle that is used for safety injector, still need prior art is further improved, make the structure of product more become to rationalizing, product has more practicality and stability, changes existing assembling mode, improves the packaging efficiency and the assembling speed of product, realize the height mass automatic production, increase the competitiveness of product in market.
Summary of the invention:
The object of the present invention is to provide a kind of syringe needle that is used for safety injector, it can overcome existing product structure poor practicability, poor work stability, the packaging technology complexity, the assembling automaticity is low, and production efficiency is low, the production cost height, the shortcoming and defect that product competitiveness is low.
To achieve these goals, technical scheme of the present invention is: a kind of syringe needle that is used for safety injector, it mainly comprises needle tubing, needle tubing is arranged in the needle stand, needle stand is socketed with sheath outward, it is characterized in that: described needle stand is made of last needle stand and following needle stand, the bottom of last needle stand places down in the needle stand, the outer wall place on last needle stand top is provided with four fins, become 45 angles of spending between the every fin, symmetrical in twos between fin and the fin, the side of fin is fixed on the needle stand outer wall, the base of fin props up down the needle stand upper end, the total length of line is 3mm-9mm between fin and the fin, the length of fin is 1.5mm-15mm, following needle stand inner chamber hollow, the inwall place of its intracavity bottom is provided with down the needle holder convex tendon, the inner chamber hollow of sheath, the jacket inner wall place is provided with spacing ring in the sheath, the lower surface of spacing ring props up fin in the sheath, and the outer wall place of last needle stand bottom is provided with a circle at least and goes up needle stand position limiting convex ring, the inner chamber hollow of following needle stand, cavity wall is provided with the annular needle stand limited impression down of a circle at least in it, and the length of following needle stand is 2mm-15mm.
The invention discloses a kind of syringe needle that is used for safety injector, syringe needle is by needle tubing, last needle stand, following needle stand, sheath constitutes, sheath during assembling, last needle stand, following needle stand once is assembled in the tube neck of injector cartridge from top to bottom, it is convenient to assemble, increasingly automated production, effectively improved production efficiency, reduce manufacturing cost, the product reasonable integral structure, in actual service test, working stability performance height, the mechanism that pulls back of piston boom end can closely cooperate with needle stand, syringe needle integral body is drawn in the syringe cylinder intracoelomic cavity, realize safe effect, avoided accidental injury medical personnel in operation and other related personnel.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is needle stand structural representation in the present invention
Fig. 3 is needle stand structural representation under the present invention
Fig. 4 is a jacket structure sketch map of the present invention
Fig. 5 is the present invention's first assembled state reference diagram
Fig. 6 is the present invention's second assembled state reference diagram
Fig. 7 is the present invention's the 3rd assembled state reference diagram
Wherein:
1 needle tubing
2 needle stands
3 sheaths
Needle stand on 4
5 times needle stands
6 fins
7 times needle holder convex tendons
Spacing ring in 8 sheaths
Needle stand position limiting convex ring on 9
10 times needle stand limited impressions
11 times needle stand position limiting convex rings
12 perpendicular muscle
13 grooves
14 neck spacing rings
The specific embodiment:
With reference to the accompanying drawings, the present invention further is described
The present invention is a kind of syringe needle that is used for safety injector, it mainly comprises needle tubing 1, needle tubing 1 is arranged in the needle stand 2, the needle stand 2 outer sheaths 3 that are socketed with, it is characterized in that: described needle stand 2 is made of last needle stand 4 and following needle stand 5, the bottom of last needle stand 4 places down in the needle stand 5, the outer wall place on last needle stand 4 tops is provided with four fins 6, become 45 angles of spending between the every fin 6, symmetrical in twos between fin 6 and the fin 6, form criss-cross vane cluster, vane cluster can play well firm effect to sheath when the assembling sheath, prevent that sheath from rocking and rotating, the side of fin 6 is fixed on needle stand 4 outer walls, the base of fin 6 props up down needle stand 5 upper ends, such project organization can make between needle stand and the following needle stand form firm relatively, the total length of line is 3mm-9mm between fin 6 and the fin 6, the length of fin 6 is 1.5mm-15mm, following needle stand 5 inner chamber hollows, the inwall place of its intracavity bottom is provided with down needle holder convex tendon 7, the inner chamber hollow of sheath 3, sheath 3 inwall places are provided with spacing ring 8 in the sheath, the lower surface of spacing ring 8 props up fin 6 in the sheath, such project organization can make form between sheath and the last needle stand relative firm, the outer wall place of last needle stand 4 bottoms is provided with a circle at least and goes up needle stand position limiting convex ring 9, the inner chamber hollow of following needle stand 5, cavity wall is provided with the annular needle stand limited impression 10 down of a circle at least in it, the length of following needle stand 5 is 2mm-15mm, in the specific implementation, the outer wall place of last needle stand 4 bottoms can be provided with 1-6 circles and go up needle stand position limiting convex ring 9, cavity wall can be provided with the annular needle stand limited impression 10 down of 1-6 circles in the following needle stand 5, the top of following needle stand 5 outer walls is provided with down needle stand position limiting convex ring 11, in the specific implementation, the external diameter of described needle stand position limiting convex ring 11 down is greater than following needle stand 5 external diameter 0.1mm-0.8mm, the thickness of following needle stand position limiting convex ring 11 is 0.1mm-1.8mm, described sheath 3 outer walls are provided with the perpendicular muscle 12 of 1-30 sheaths, following needle holder convex tendon 7 can be linear annular muscle, many the annular muscle that perpendicular muscle constitutes, the annular muscle that a plurality of raised points constitute, the upper surface of the ring bodies that following needle holder convex tendon 7 constitutes can be provided with the groove 13 that circularizes, and the upper surface of the ring bodies that following needle holder convex tendon 7 constitutes also can be the plane.
In the specific implementation, as shown in Figure 5, the first step, needle stand butt joint up and down now, again sheath is set to from top to bottom up and down outside the needle stand, as shown in Figure 6, when spacing ring propped up fin in the sheath, the sheath assembling finished, second step, the needle stand up and down that is with sheath is assembled in the injector cartridge tube neck from top to bottom, as shown in Figure 7, when needle stand is assembled in the injector cartridge tube neck from top to bottom instantly, following needle stand position limiting convex ring can be crossed the tube neck spacing ring 14 of a neck inwall by force, prevent that the syringe needle pressurized skids off from tube throat end in injection process, at this moment, assembling is finished.
Claims (5)
1, a kind of syringe needle that is used for safety injector, it mainly comprises needle tubing (1), needle tubing (1) is arranged in the needle stand (2), the outer sheath (3) that is socketed with of needle stand (2), it is characterized in that: described needle stand (2) is made of last needle stand (4) and following needle stand (5), the bottom of last needle stand (4) places down in the needle stand (5), the outer wall place on last needle stand (4) top is provided with four fins (6), become the angle of 45 degree between the every fin (6), symmetrical in twos between fin (6) and the fin (6), the side of fin (6) is fixed on needle stand (4) outer wall, the base of fin (6) props up down needle stand (5) upper end, the total length of line is 3mm-9mm between fin (6) and the fin (6), the length of fin (6) is 1.5mm-15mm, following needle stand (5) inner chamber hollow, the inwall place of its intracavity bottom is provided with down needle holder convex tendon (7), the inner chamber hollow of sheath (3), sheath (3) inwall place is provided with spacing ring (8) in the sheath, the lower surface of spacing ring (8) props up fin (6) in the sheath, the outer wall place of last needle stand (4) bottom is provided with a circle at least and goes up needle stand position limiting convex ring (9), the inner chamber hollow of following needle stand (5), cavity wall is provided with the annular needle stand limited impression (10) down of a circle at least in it, and the length of following needle stand (5) is 2mm-15mm.
2, a kind of syringe needle that is used for safety injector according to claim 1 is characterized in that: described outer wall place of going up needle stand (4) bottom can be provided with 1-6 circles and go up needle stand position limiting convex ring (9).
3, a kind of syringe needle that is used for safety injector according to claim 1, it is characterized in that: the described interior cavity wall of needle stand (5) down can be provided with the annular needle stand limited impression (10) down of 1-6 circles, and the top of following needle stand (5) outer wall is provided with down needle stand position limiting convex ring (11).
4, a kind of syringe needle that is used for safety injector according to claim 1, it is characterized in that: the external diameter of described needle stand position limiting convex ring (11) down is greater than following needle stand (5) external diameter 0.1mm-0.8mm, and the thickness of following needle stand position limiting convex ring (11) is 0.1mm-1.8mm.
5, a kind of syringe needle that is used for safety injector according to claim 1 is characterized in that: described sheath (3) outer wall is provided with the perpendicular muscle (12) of 1-30 sheaths.
6, a kind of syringe needle that is used for safety injector according to claim 1, it is characterized in that: described needle holder convex tendon (7) down can be the annular muscle of linear annular muscle, the annular muscle of many perpendicular muscle formations, a plurality of raised points formation, the upper surface of the ring bodies that following needle holder convex tendon (7) constitutes can be provided with the groove (13) that circularizes, and the upper surface of the ring bodies that following needle holder convex tendon (7) constitutes also can be the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100470789A CN101411905B (en) | 2007-10-16 | 2007-10-16 | Needle head for safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100470789A CN101411905B (en) | 2007-10-16 | 2007-10-16 | Needle head for safety syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101411905A true CN101411905A (en) | 2009-04-22 |
| CN101411905B CN101411905B (en) | 2012-05-30 |
Family
ID=40592779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100470789A Expired - Fee Related CN101411905B (en) | 2007-10-16 | 2007-10-16 | Needle head for safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101411905B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056330A (en) * | 2013-03-21 | 2014-09-24 | 许沛新 | Protective device of injection needle device |
| CN107411335A (en) * | 2017-06-13 | 2017-12-01 | 江苏金联金属制品有限公司 | A kind of desk |
| CN113577461A (en) * | 2021-08-10 | 2021-11-02 | 温州康洲医疗器材有限公司 | Self-aligning needle seat and use method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2799376B1 (en) * | 1999-10-07 | 2002-01-18 | Marc Brunel | SINGLE USE INJECTION DEVICE |
| FR2812817B1 (en) * | 2000-08-09 | 2002-10-31 | Sanofi Synthelabo | PROTECTION DEVICE FOR A SYRINGE NEEDLE |
| CN2803412Y (en) * | 2005-01-25 | 2006-08-09 | 林作钱 | Safety self-destroying and disposable syringe |
| CN200945295Y (en) * | 2006-09-01 | 2007-09-12 | 沈海忠 | Safe self-destruction syringe |
-
2007
- 2007-10-16 CN CN2007100470789A patent/CN101411905B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056330A (en) * | 2013-03-21 | 2014-09-24 | 许沛新 | Protective device of injection needle device |
| CN104056330B (en) * | 2013-03-21 | 2016-08-24 | 许沛新 | The preventer of entry needle device |
| CN107411335A (en) * | 2017-06-13 | 2017-12-01 | 江苏金联金属制品有限公司 | A kind of desk |
| CN113577461A (en) * | 2021-08-10 | 2021-11-02 | 温州康洲医疗器材有限公司 | Self-aligning needle seat and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101411905B (en) | 2012-05-30 |
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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 | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Biotop Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20151016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |