CN204709541U - A kind of entry needle with protective sleeve - Google Patents
A kind of entry needle with protective sleeve Download PDFInfo
- Publication number
- CN204709541U CN204709541U CN201520300179.2U CN201520300179U CN204709541U CN 204709541 U CN204709541 U CN 204709541U CN 201520300179 U CN201520300179 U CN 201520300179U CN 204709541 U CN204709541 U CN 204709541U
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- Prior art keywords
- needle
- protection sleeve
- tip protection
- stand
- needle tip
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Abstract
The utility model discloses a kind of entry needle with protective sleeve, comprise syringe, needle point, needle stand and protective sleeve, needle tip protection sleeve, spring and locking-releasing structure, the front end of syringe is provided with the female tubular joint of a tool; The rear end of needle stand is provided with a limit platform radially extended, and limit platform is symmetrically arranged with a pair projection, on the outer peripheral face of needle stand, circumference is arranged at intervals with some first brace rods, and the middle part of each brace rod is provided with a limiting stand; On the inner peripheral surface of the rear end of needle tip protection sleeve, circumference is arranged at intervals with some grooves, and on the outer peripheral face of needle tip protection sleeve, circumference is arranged at intervals with some second brace rods; On the inwall of protective sleeve, circumference is arranged at intervals with some recessed stupefied, the inwall of protective sleeve is provided with a ring-type limit convex stupefied, and the middle part circumference of the outer wall of protective sleeve is arranged at intervals with some anti-skidding stupefied.The needle stand of the entry needle with protective sleeve of the present utility model is connected more firm, easy to use with the nipple of syringe.
Description
Technical field
This utility model relates to entry needle technical field, particularly relates to a kind of entry needle with protective sleeve.
Background technology
Current employing syringe completes injection or after patient's withdraw blood sample, for the danger that there is the entry needle be injected on device doctor or nurse and stab.Abroad, this phenomenon is referred to as " sticky pin ".This causes medical personnel to be often exposed to the infection disease relevant with blood with the personnel of these Biohazard Wastes of process, as the danger of acquired immune deficiency syndrome (AIDS) (HIV), hepatitis B (HBV), hepatitis C (HCV) etc.
Therefore, people develop the safety injector and self-destruction syringe with defencive function gradually, although current safety injector and self-destruction syringe have the superiority of use, fancy price also prevents its paces promoted.In this opportunity situation, how to combine anti-pricking wound requirement and prevent the requirement that reuses, develop a kind of safe injection needle with needle point guard function and there is certain urgency.
For this reason, application number be 201220047222.5 Chinese patent disclose a kind of safe injection needle, comprise needle point, needle stand and sheath, described needle point is fixed on described needle stand, be enclosed within needle stand before also comprising an injection and in injection process, and needle point position can be moved to and the needle tip protection sleeve that needle point is protected after injection, and be arranged between needle stand and described needle tip protection sleeve after injecting, drive needle tip protection sleeve to move to the spring of tip position by needle stand position, and be arranged between described needle stand and described needle tip protection sleeve in order to before the injection with in injection process described needle tip protection sleeve is locked in needle stand position, and the locking-releasing structure that needle tip protection sleeve can be discharged after injection, when described needle tip protection sleeve is in needle stand position, described needle tip protection sleeve can by described spring-compressed on described needle stand, and when described needle tip protection sleeve is in tip position, spring becomes release conditions, before the injection, described sheath is enclosed within described needle stand, to protect needle point.When being excited under the release action of spring at locking-releasing structure; spring pushes needle tip protection sleeve to tip position due to restoring force; and be centered around around needle point to protect needle point; play anti-acupuncture requirement; because spring cannot bounce back on needle stand again, thus there is the function preventing from reusing.
But, the applicant thinks that above-mentioned disclosed safe injection needle also exists following defects: the connected mode of syringe needle and syringe is direct plug-in, namely with syringe needle needle stand directly and the nipple grafting of syringe, frictionally is fixedly connected with, although this connected mode is very convenient, also expose its weak point in actual applications.If infusion solutions is when dosing, low dose of medicine need be injected Large Copacity medium (as normal saline) by syringe, syringe needle and syringe often can be occurred to collapse the phenomenon held greatly because pressure of the inside of a bottle becomes.Particularity because of injection and the seriousness to human influence, the medicinal liquid not completing dosing cannot re-use, and causes the dual waste of medicinal liquid and syringe.And for example, during to infant liquid medicine injection, jerk because of it and also easily make syringe needle and syringe disconnect suddenly, cause injected dose inaccurate, infant is waited bitterly for by stabbing pain again.
For this reason, applicant has carried out useful exploration and trial on the basis of application number a kind of safe injection needle disclosed in the Chinese patent of 201220047222.5, have found result of the above problems, technical scheme described below produces under this background.
Utility model content
Technical problem to be solved in the utility model: provide a kind of for the deficiencies in the prior art and be connected firmly, easy to use and meet anti-pricking wound requirement and prevent the entry needle with protective sleeve of the requirement reused.
The technical problem that this utility model solves can realize by the following technical solutions:
A kind of entry needle with protective sleeve, comprise syringe, needle point, needle stand and protective sleeve, described needle stand is arranged on the nipple of described syringe, described needle point is fixed on described needle stand, be enclosed within needle stand before also comprising an injection and in injection process, and needle point position can be moved to and the needle tip protection sleeve that needle point is protected after injection, and be arranged between needle stand and described needle tip protection sleeve after injecting, drive needle tip protection sleeve to move to the spring of tip position by needle stand position, and be arranged between described needle stand and described needle tip protection sleeve in order to before the injection with in injection process described needle tip protection sleeve is locked in needle stand position, and the locking-releasing structure that needle tip protection sleeve can be discharged after injection, when described needle tip protection sleeve is in needle stand position, described needle tip protection sleeve can by described spring-compressed on described needle stand, and when described needle tip protection sleeve is in tip position, spring becomes release conditions, before the injection, described protective sleeve is enclosed within described needle tip protection sleeve, to protect needle point, it is characterized in that,
The surrounding that the front end of described syringe is centered around described syringe nipple is provided with the female tubular joint of a tool;
The rear end of described needle stand is provided with a limit platform radially extended, described limit platform is symmetrically arranged with a pair projection, the external diameter of described a pair projection is equal with the internal diameter of the tubular joint of described syringe front end, after the outer peripheral face of described needle stand and needle tip protection sleeve end in contact position on circumference be arranged at intervals with some first brace rods, the middle part of each brace rod is provided with a limiting stand;
On the inner peripheral surface of the rear end of described needle tip protection sleeve, circumference the first brace rod be arranged at intervals with on some and described needle stand cooperatively interacts and by the spacing groove of the limiting stand on the first brace rod, outer peripheral face circumference in its front position of described needle tip protection sleeve is arranged at intervals with some second brace rods;
It is recessed stupefied that the inwall of described protective sleeve circumference the second brace rod be arranged at intervals with in some and described needle tip protection sleeve on the position of its opening cooperatively interacts; the inwall of described protective sleeve is provided with a ring-type limit convex be connected with each recessed stupefied front end stupefied, the middle part circumference of the outer wall of described protective sleeve is arranged at intervals with some anti-skidding stupefied.
Owing to have employed technical scheme as above, the needle stand of the entry needle with protective sleeve of the present utility model is connected more firm, easy to use with the nipple of syringe.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
The technological means realized to make this utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth this utility model further.
Give a kind of entry needle with protective sleeve see Fig. 1, Fig. 1, comprise needle point 100, needle stand 200, needle tip protection sleeve 300, spring 400, protective sleeve 500 and syringe 600.
The needle point 100 of this utility model safe injection needle is fixed on needle stand 200.Needle tip protection sleeve 300 is a tube structure; when not using; needle tip protection sleeve 300 is enclosed within needle stand 200 position, and one end of spring 400 is fixed on needle stand 200, and the other end to be extended in needle tip protection sleeve 300 by the rear end of needle tip protection sleeve 300 and is connected with needle tip protection sleeve 300 inwall centre position.Offer the hole 310 that an appearance needle stand 200 and needle point 100 pass on the top of needle tip protection sleeve 300, time so before the injection with injection, needle point 100 can not be surrounded by needle tip protection sleeve 300.
In order to make this utility model safe injection needle when not using; namely before injection and in injection process; needle tip protection sleeve 300 can be retained in needle stand 200 position and be compressed in needle tip protection sleeve 300 by spring 400; and after injection terminates; needle tip protection sleeve 300 can be passed to needle point 100 position by spring 400; one is provided with in order to before the injection with in injection process needle tip protection sleeve 300 is locked in needle stand 200 position between needle stand 200 and needle tip protection sleeve 300, and the locking-releasing structure that needle tip protection sleeve 300 can be discharged after injection.
This locking-releasing structure comprises one and to be arranged on needle stand 200 sidewall and protuberance 220 outwardly and the limiting holes 320 that is opened on the sidewall of needle tip protection sleeve 300 rear end; when needle tip protection sleeve 300 is enclosed within needle stand 200, protuberance 220 is inserted in limiting holes 320.In order to when dispatching from the factory assembling, protuberance 220 being imported to smoothly in limiting holes 320, being set to inclined-plane 221 in the side of the contiguous needle point 100 of protuberance 220.
In order to needle tip protection sleeve 300 be pushed to needle point 100 direction smoothly, make protuberance 220 detach limiting holes 320, in the rear end of needle stand 200, contiguous limiting holes 320 position is provided with one handle 330.When injection is complete, with hands, the handle 330 of needle tip protection sleeve 300 is promoted to needle point 100 direction, operate so more laborsaving.
After being pushed into needle point 100 position in needle tip protection sleeve 300, prevent needle tip protection sleeve 300 from bouncing back, simultaneously in order to prevent reusing of syringe/entry needle, arranging one at hole 310 part edge and crossing the needle point covering plate 340 of needle tip protection sleeve 300 central axis by this hole 310 part edge to the oblique extension in needle tip protection sleeve 300 rear end; This needle point covering plate 340 has certain elasticity, and when needle tip protection sleeve 300 is enclosed within needle stand 200, this needle point covering plate 340 can be turned round to side, to hold needle stand 200 and needle point 100 runs through whole needle tip protection sleeve 300; And after needle tip protection sleeve 300 is ejected by spring 400, this needle point covering plate 340 returns to original state and is positioned at the front end of needle point 100, needle point 100 is covered in.At this moment the distance that the tip distance needle point covering plate 340 of needle point 100 is nearest is not less than 3mm.Needle point covering plate 340 can be made so relatively to have a buffer distance between needle point 100, when needle tip protection sleeve 300 being run into clash into suddenly, needle point 100 can not be touched immediately, but absorb the energy of shock by the retraction of spring 400.
When injection is complete, promoted to needle point 100 direction by the handle 330 of needle tip protection sleeve 300 with hands, be under pressure, the protuberance 220 on needle stand 200 can be bent downwardly, and exits the limiting holes 320 of needle tip protection sleeve 300.Once after protuberance 220 exits limiting holes 320 completely, spring 400 loses restriction, automatically discharges, to the former length of spring 400 after needle tip protection sleeve 300 being ejected.After spring 400 returns to former length, needle tip protection sleeve 300 moves to needle point 100 position and is surrounded by needle point 100, and the needle point covering plate 340 simultaneously in needle tip protection sleeve 300 returns to original state and is positioned at the front end of needle point 100, is covered in by needle point 100.Due to the stop of needle point covering plate 340, needle tip protection sleeve 300 cannot come back to needle stand 200 position, and the spring 400 after simultaneously exciting also cannot be retracted, and makes needle point 100 be in protection state all the time, reaches simultaneously and prevent reusable object.
In addition, the surrounding that the front end of syringe 600 of the present utility model is centered around the nipple 610 of syringe 600 is provided with the tubular joint 620 that has female thread 621.
The rear end of needle stand 200 is provided with a limit platform 230 radially extended, and limit platform 230 is symmetrically arranged with a pair projection (not shown), the external diameter of a pair projection is equal with the internal diameter of the tubular joint 620 of the front end of syringe 600.On the position of the outer peripheral face of needle stand 200 and the rear end in contact of needle tip protection sleeve 300, circumference is arranged at intervals with four the first brace rods 240; article four, the first brace rod 240 is in cross distribution on the outer peripheral face of needle stand 200, and the middle part of the first brace rod 240 is provided with a limiting stand 241.
On the inner peripheral surface of the rear end of needle tip protection sleeve 300, circumference is arranged at intervals with four grooves 350, and outer peripheral face circumference in its front position of needle tip protection sleeve 300 is arranged at intervals with four the second brace rods 360.When needle tip protection sleeve 300 is placed on needle stand 200, four grooves 350 of needle tip protection sleeve 300 are absorbed in 4 first brace rods 240 on needle stand 200, and spacing by the limiting stand 241 on four the first brace rods 240.
The inwall of protective sleeve 500 circumference on the position of its opening be arranged at intervals with four with the second brace rod 360 of four in needle tip protection sleeve 300 cooperatively interact recessed stupefied 510; the inwall of protective sleeve 500 is provided with a ring-type limit convex stupefied 520 be connected with four recessed stupefied 510 front ends; the middle part circumference of the outer wall of protective sleeve 500 be arranged at intervals with several anti-skidding stupefied 530; the anti-skidding quantity of stupefied 530 is 6 ~ 8 to be advisable, and the anti-skidding surface of stupefied 530 is frosted quality.
When needle stand 200 is split state with syringe 600; user can pinch anti-skidding stupefied 530 parts of protective sleeve 500 by syringe 600 on the other hand on the other hand; first; in the tubular joint 620 limit platform 230 of needle stand 200 being placed in the front end of syringe 600, both hands rotate backward; the power that hands bestows protective sleeve 500 is transferred on needle stand 200 by needle tip protection sleeve 300, thus makes a pair projection on the limit platform 230 of needle stand 200 screw in and be stuck on the female thread 621 of tubular joint 620.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed this utility model.The claimed scope of this utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. the entry needle with protective sleeve, comprise syringe, needle point, needle stand and protective sleeve, described needle stand is arranged on the nipple of described syringe, described needle point is fixed on described needle stand, be enclosed within needle stand before also comprising an injection and in injection process, and needle point position can be moved to and the needle tip protection sleeve that needle point is protected after injection, and be arranged between needle stand and described needle tip protection sleeve after injecting, drive needle tip protection sleeve to move to the spring of tip position by needle stand position, and be arranged between described needle stand and described needle tip protection sleeve in order to before the injection with in injection process described needle tip protection sleeve is locked in needle stand position, and the locking-releasing structure that needle tip protection sleeve can be discharged after injection, when described needle tip protection sleeve is in needle stand position, described needle tip protection sleeve can by described spring-compressed on described needle stand, and when described needle tip protection sleeve is in tip position, spring becomes release conditions, before the injection, described protective sleeve is enclosed within described needle tip protection sleeve, to protect needle point, it is characterized in that,
The surrounding that the front end of described syringe is centered around described syringe nipple is provided with the female tubular joint of a tool;
The rear end of described needle stand is provided with a limit platform radially extended, described limit platform is symmetrically arranged with a pair projection, the external diameter of described a pair projection is equal with the internal diameter of the tubular joint of described syringe front end, after the outer peripheral face of described needle stand and needle tip protection sleeve end in contact position on circumference be arranged at intervals with some first brace rods, the middle part of each brace rod is provided with a limiting stand;
On the inner peripheral surface of the rear end of described needle tip protection sleeve, circumference the first brace rod be arranged at intervals with on some and described needle stand cooperatively interacts and by the spacing groove of the limiting stand on the first brace rod, outer peripheral face circumference in its front position of described needle tip protection sleeve is arranged at intervals with some second brace rods;
It is recessed stupefied that the inwall of described protective sleeve circumference the second brace rod be arranged at intervals with in some and described needle tip protection sleeve on the position of its opening cooperatively interacts; the inwall of described protective sleeve is provided with a ring-type limit convex be connected with each recessed stupefied front end stupefied, the middle part circumference of the outer wall of described protective sleeve is arranged at intervals with some anti-skidding stupefied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520300179.2U CN204709541U (en) | 2015-05-11 | 2015-05-11 | A kind of entry needle with protective sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520300179.2U CN204709541U (en) | 2015-05-11 | 2015-05-11 | A kind of entry needle with protective sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204709541U true CN204709541U (en) | 2015-10-21 |
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ID=54308576
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520300179.2U Expired - Fee Related CN204709541U (en) | 2015-05-11 | 2015-05-11 | A kind of entry needle with protective sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204709541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107773813A (en) * | 2016-08-31 | 2018-03-09 | 上海凯茂生物医药有限公司 | A kind of precharging preparation of the erythropoietin class parenteral solution with safety guard |
-
2015
- 2015-05-11 CN CN201520300179.2U patent/CN204709541U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107773813A (en) * | 2016-08-31 | 2018-03-09 | 上海凯茂生物医药有限公司 | A kind of precharging preparation of the erythropoietin class parenteral solution with safety guard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201400 Shanghai City, Fengxian District Hangzhou Highway No. 1888 building Sixth Patentee after: Poly Biological Technology Co Ltd Address before: 201400 Shanghai City, Fengxian District Hangzhou Highway No. 1888 building Sixth Patentee before: SHANGHAI JUMIN BIOLOGICAL TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20200511 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |