CN104548283A - Limit mechanism of needle holder in retraction type safety syringe - Google Patents
Limit mechanism of needle holder in retraction type safety syringe Download PDFInfo
- Publication number
- CN104548283A CN104548283A CN201510039595.6A CN201510039595A CN104548283A CN 104548283 A CN104548283 A CN 104548283A CN 201510039595 A CN201510039595 A CN 201510039595A CN 104548283 A CN104548283 A CN 104548283A
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- China
- Prior art keywords
- syringe
- needle holder
- limiting section
- enlarged portion
- limiting
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/27—General characteristics of the apparatus preventing use
- A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a limit mechanism of a needle holder in a retraction type safety syringe, belongs to the technical field of medical apparatus and instruments, and solves the problem that the position of needle holder in an existing syringe is unstable. The limit mechanism comprises a first limit unit and a second limit unit, wherein the first limit unit is disposed between the syringe and the needle holder and used for limiting the needle holder from moving upwardly and the second limit unit is disposed between the syringe and the needle holder and used for limiting the needle holder from moving downwardly. A protruding shoulder is disposed on the inner lateral wall of the syringe. The lower side of the protruding shoulder is provided with a limit part which extends downwardly. The second limit unit comprises the limit part and an expansion part located in the syringe, wherein the expansion part is provided with an annular expansion portion, the expansion portion is located between the limit part and the lateral wall of the syringe and abutted against the limit part, and the limit part is bent inwardly and abutted against the needle holder. The limit mechanism has the advantages that the limit part which extends downwardly is disposed on the lateral wall of the syringe, so that the needle holder is stably limited in the syringe under the action of the expansion part.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of syringe, particularly the position-limit mechanism of needle holder in a kind of retractable safety injector.
Background technology
Current, syringe is the most frequently used, is also one of maximum medical apparatus and instruments of use amount.In recent years in order to control iatrogenic infectious disease, avoiding the adverse consequencess such as cross infection, generally using disposable sterilized injector.But existing disposable syringe remains intact after all there is use, and reusable, without any safety device, inject the defects such as rear syringe needle exposes.Be subject on the one hand intentionally molecule utilize, discarded disposable syringe after using reused, very easily causes propagation and the cross infection of virus; Outside syringe needle on the other hand after injection is still trapped in, relative to the acuity of syringe needle, be not only the carrying of syringe rubbish, destruction is made troubles, the thing of simultaneously accidentally stabbing user of service because needle point exposes also often occurs.So many countries are by legislation, emphasizing must use safety self-destruction syringe.
Application for a patent for invention prospectus (publication number CN1579564A, publication date 20050216) disclose a kind of safety injector, include injection tube, be installed in the clamping base unit of injection tube inside, be attached at the needle unit in clamping base unit and be plugged in the push rod of injection tube inside, described injection tube has around axis and can define the cylinder portion of room and be fixed in end, a portion one and in the beam tube portion collecting shape, inside, beam tube portion has the perforation that can communicate with room and have smaller aperture due, and perforation and room joining place produce stop section, clamping base unit is from being that to load injection tube inner and be positioned on stop section for contrary room opening with perforation, it has sleeve member and straight forming and the sealing member be installed on sleeve member, sleeve member has the outer peripheral face that produces around axis and is the inner ring surface of opposing setting with outer peripheral face, inner ring surface has corresponding to room and first holding section of protruding towards axis, be located at the first side, holding section corresponding to perforation and be comparatively away from the holding part of axis relative to the first holding section, sealing member is to make compared with the material of sleeve member tool elastico-plastic, and be installed on the outer peripheral face of sleeve member, and the external diameter of sealing member is greater than the external diameter of corresponding sleeve member outer peripheral face, needle unit has needle stand and is installed in the needle body of needle stand inside, and needle stand link is positioned on the sleeve member of clamping base unit, push rod, is plugged in the room of injection tube, and it has bar portion, be arranged in bar portion and be airtightly set in the piston in room and be located at outside piston and the tenon can crossed the first holding section in good time and be located in holding part.
In this syringe, sealing member is by being fixed on block base on syringe with annular groove phase clamping on syringe.But because the wall thickness of syringe is limited, the degree of depth of annular groove is more shallow, therefore, the structure when sealing member is stuck on draw-in groove is comparatively unstable, and sealing member easily departs from from draw-in groove, causes syringe normally to use.Even if arrange higher projection as fixing on the inwall of syringe, due to production mould restriction, the projection circularized cannot be done, but several projections be separated, this just requires when assembling, need between needle holder and syringe first to determine that an angle could be assembled or manual assembly, assembly cost is higher.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose the position-limit mechanism of needle holder in the comparatively stable retractable safety injector of a kind of structure.
Object of the present invention realizes by following technical proposal:
The position-limit mechanism of needle holder in a kind of retractable safety injector, comprise and being arranged between syringe and needle holder for limiting position-limiting unit one that needle holder moves up and being arranged between syringe and needle holder for limiting the position-limiting unit two that needle holder moves down, it is characterized in that, described syringe medial wall has convex shoulder, described convex shoulder downside has the limiting section stretched out downwards, described position-limiting unit two comprises limiting section and is positioned at the expansion part of syringe, described expansion part has enlarged portion in the form of a ring, described enlarged portion is between limiting section and barrel sidewall, described enlarged portion is resisted against on limiting section, described limiting section bends inwards and is resisted against in needle holder, described enlarged portion is resisted against on syringe medial wall, described limiting section, interference fit between enlarged portion and syringe.
In mechanism, by the enlarged portion of expansion part, limiting section bending is released, thus make limiting section distortion bend inwards and be resisted against in needle holder, play restriction needle holder and move down, under the combined effect of position-limiting unit one and position-limiting unit two, thus needle holder is fixed in syringe.The length of limiting section does not limit by barrel sidewall, can make the longer limiting section of length as required, thus is fixed in syringe by stable for needle holder; Simultaneously, because enlarged portion is resisted against on syringe medial wall, and limiting section, interference fit between enlarged portion and syringe, expansion part relies on and frictional force between limiting section and syringe is stable is positioned at syringe, thus needle holder is not easily come off from syringe, make the structure of syringe comparatively stable.
In above-mentioned retractable safety injector needle holder position-limit mechanism in, described limiting section is in the form of a ring and coaxial with syringe.Limiting section is arranged in the form of a ring, makes contact area between limiting section and needle holder larger, make needle holder more stable be positioned at syringe.
In above-mentioned retractable safety injector needle holder position-limit mechanism in, described limiting section comprises some even circumferences and is distributed in banking stop bottom convex shoulder.Have certain gap between adjacent two banking stops, the degree that banking stop is bent is larger, thus make banking stop more stable needle holder is fixed in syringe, make the structure of syringe more stable.
In above-mentioned retractable safety injector needle holder position-limit mechanism in, described enlarged portion has the taper seat coaxial with syringe near the side of limiting section, and the downside of taper seat comparatively upside closer to syringe axis.Taper seat play the guiding role between expansion part and limiting section, and expansion part is more easily entered between limiting section and syringe, thus more stable limiting section bending is released; Further, under the effect of taper seat, enlarged portion enters between limiting section and syringe darker, and the degree that limiting section bending is released by expansion part is larger, thus makes the position of needle holder in syringe more stable.
In above-mentioned retractable safety injector needle holder position-limit mechanism in, the thickness of described limiting section diminishes from top to bottom gradually.Like this, when limiting section is by expansion part crimp, limiting section also not easy fracture, makes limiting section better play position-limiting action to needle holder, thus makes syringe construction more stable.
In above-mentioned retractable safety injector needle holder position-limit mechanism in, described syringe medial wall has retaining for preventing expansion part from moving down protruding, described retaining projection to be positioned on the downside of enlarged portion and to lean with enlarged portion.Arrange retaining projection, what it is such that expansion part can be more stable is positioned at syringe, thus make that limiting section can be more stable needle holder is spacing.
Compared with prior art, in this retractable safety injector, the position-limit mechanism of needle holder by arranging a limiting section stretched out downwards in barrel sidewall, and under the effect of expansion part, thus stable for needle holder is limited in syringe.
Accompanying drawing explanation
Fig. 1 is the structural representation of needle holder and its upper end;
Fig. 2 is the profile after needle holder puts into syringe;
Fig. 3 is the profile of expansion part when snapping in limiting section place;
Fig. 4 is the profile of expansion part when snapping in limiting section place completely;
Fig. 5 is the structural representation of syringe when being used to complete;
Fig. 6 is that push rod drives the structural representation of expansion part when exiting;
Fig. 7 is the structural representation after push rod drives expansion part to exit;
Fig. 8 is the structural representation of push rod when exiting completely;
Fig. 9 is the structural representation of push rod when fractureing;
Figure 10 is the profile of expansion part in embodiment two;
Figure 11 is the structural representation of syringe in embodiment two;
Figure 12 is the structural representation of syringe in embodiment three.
In figure, 1, syringe; 1a, convex shoulder; 1b, limiting section; 1c, positive stop strip one; 1d, ring-type shoulder block; 1e, retaining are protruding; 2, needle holder; 2a, positive stop strip two; 2b, annular projection one; 2c, butting section; 3, expansion part; 3a, enlarged portion; 3b, taper seat; 3c, annular projection two; 3d, annular projection three; 4, syringe needle; 5, push rod; 5a, annular projection four; 5b, annular projection five; 5c, annular projection six.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
As shown in Figure 5, syringe comprises syringe 1 and to be fixed on inside syringe 1 upper end and needle holder 2 cylindrically, needle holder 2 medial surface has annular projection one 2b.During use, needle holder 2 is fixed with syringe needle 4, a push rod 5 is arranged in syringe 1.
As shown in Figure 4, in this retractable safety injector, the position-limit mechanism of needle holder and syringe is arranged between syringe 1 and needle holder 2.
In order in use, prevent syringe needle 4 from rotating or move forward and backward, there is between syringe 1 and needle holder 2 position-limiting unit one moved up for limiting needle holder 2, there is between syringe 1 and needle holder 2 position-limiting unit two moved down for limiting needle holder 2, and between needle holder 2 and syringe 1, be also provided with the structure for preventing needle holder 2 from rotating.This position-limit mechanism comprises position-limiting unit one and position-limiting unit two.
Concrete, as shown in Figure 1, position-limiting unit one comprises the ring-type shoulder block 1d being positioned at syringe 1 inside top, and ring-type shoulder block 1d and needle holder 2 lean, and like this, needle holder 2 would not outwards movement.As the another kind of scheme of position-limiting unit one, syringe 1 upper end is fixed with limited cap, and limited cap is fixed on syringe 1 top, and limited cap and needle holder 2 lean.
As shown in Figure 2, medial wall has convex shoulder 1a to syringe 1, has the limiting section 1b stretched out bottom convex shoulder 1a downwards.Expansion part 3 is tubular and is positioned at syringe 1, and expansion part 3 has enlarged portion 3a in the form of a ring, the lateral surface of expansion part 3 top tubular has annular projection two 3c, and the medial surface of expansion part 3 tubular has annular projection three 3d.
After having assembled, as shown in Figure 4, enlarged portion 3a is between limiting section 1b and syringe 1 sidewall, and enlarged portion 3a is resisted against on syringe 1 medial wall, and enlarged portion 3a is resisted against on limiting section 1b, and limiting section 1b bends inwards and is resisted against in needle holder 2.Meanwhile, expansion part 3 is also resisted against the bottom of needle holder 2, make needle holder more stable be positioned at syringe 1.In order to make the structure of limiting section 1b more stable, not easy fracture, the thickness of limiting section 1b diminishes from top to bottom gradually.
Enlarged portion 3a has the taper seat 3b coaxial with syringe 1 near the side of limiting section 1b, and the downside of taper seat 3b comparatively upside closer to syringe 1 axis.Taper seat 3b play the guiding role between expansion part 3 and limiting section 1b, and expansion part 3 is more easily entered between limiting section 1b and syringe 1, thus more stable being bent by limiting section 1b is released; Further, under the effect of taper seat 3b, enlarged portion 3a enters between limiting section 1b and syringe 1 darker, and it is larger that limiting section 1b is bent the degree released by expansion part 3, thus make the position of needle holder 2 in syringe 1 more stable.Position-limiting unit two comprises limiting section 1b and expansion part 3.The bottom of needle holder 2 has butting section 2c.
As a kind of scheme of limiting section 1b, limiting section 1b in the form of a ring and coaxial with syringe 1.Limiting section 1b is arranged in the form of a ring, makes contact area between limiting section 1b and needle holder 2 larger, make needle holder 2 more stable be positioned at syringe 1.
As the another kind of scheme of limiting section 1b, limiting section 1b comprises some even circumferences and is distributed in banking stop bottom convex shoulder 1a.Have certain gap between adjacent two banking stops, the degree that banking stop is bent is larger, thus makes more stable needle holder 2 being fixed in syringe 1 of banking stop, makes the structure of syringe more stable.
As the another kind of scheme of position-limiting unit two, needle holder 2 has projection, syringe 1 has groove, in protruding embedding groove.
Syringe 1 medial wall has positive stop strip one 1c vertically arranged, needle holder 2 has positive stop strip two 2a matched with positive stop strip one 1c.After needle holder 2 inserts syringe 1, positive stop strip one 1c and positive stop strip two 2a leans.By the setting of positive stop strip one 1c and positive stop strip two 2a, effectively prevent needle holder 2 from rotating relative to syringe 1.
In mechanism, by the enlarged portion 3a of expansion part 3, limiting section 1b is released, thus limiting section 1b is bent inwards and is resisted against on the bottom of butting section 2c, needle holder 2 upwards to be withstood and spacing, under the combined effect of position-limiting unit one and position-limiting unit two, thus needle holder 2 is fixed in syringe 1.The length of limiting section 1b does not limit by syringe 1 sidewall, can make the limiting section 1b that length is longer as required, thus is fixed in syringe 1 by stable for needle holder 2, and needle holder 2 not easily comes off from syringe 1, makes the structure of syringe comparatively stable.
Now be described below with the assembling of the syringe of this position-limit mechanism and use procedure:
As shown in Figure 1, first needle holder 2 is inserted syringe 1 from bottom to up, positive stop strip one 1c and positive stop strip two 2a leans.After this, as shown in Figures 2 to 4, expansion part 3 is assembled to syringe 1 inner.The gap that the enlarged portion 3a of expansion part 3 aims between limiting section 1b and syringe 1 medial wall is inserted, enlarged portion 3a is embedded between limiting section 1b and syringe 1 medial wall.And make annular projection two 3c be positioned on expansion part 3 cross annular projection one 2b in needle holder 2.
Now, limiting section 1b struts by enlarged portion 3a, limiting section 1b is bent and is resisted against the bottom of needle holder 2, thus by spacing for needle holder 2, prevents needle holder 2 from bouncing back downwards.Certainly, can reach the scheme preventing needle holder 2 from bouncing back downwards, except the bottom that limiting section 1b is resisted against needle holder 2, limiting section 1b also can be resisted against the sidepiece of needle holder 2.
During use, syringe needle 4 is fixed in needle holder 2.After syringe is used to complete, as shown in Figure 5, upwards shift push rod 5 onto the end, make annular projection four 5a of push rod 5 upper end cross annular projection three 3d on expansion part 3.
As shown in Figures 6 to 9, by push rod 5 toward pulling back, in the process, annular projection four 5a on push rod 5 is resisted against on annular projection three 3d on expansion part 3, push rod 5 drives expansion part 3 away from needle holder 2, and now, enlarged portion 3a is no longer resisted against on limiting section 1b, limiting section 1b restores, and limiting section 1b is no longer resisted against on syringe needle 4; After this, annular projection two 3c on expansion part 3 is resisted against on annular projection one 2b of needle holder 2, and push rod 5 drives needle holder 2 to bounce back by expansion part 3, until push rod 5 is stuck on ring-type shoulder block 1d.Finally, push rod 5 is fractureed, reach disposable practical purpose.
Embodiment two
The present embodiment and embodiment one similar, different places is, in the present embodiment, as shown in Figure 10 and Figure 11, expansion part 3 only has an annular projection: annular projection three 3d; Push rod 5 have two annular projections: annular projection five 5b and annular projection six 5c, annular projection five 5b is positioned on the upside of annular projection six 5c.After syringe is finished, upwards shift push rod 5 onto the end, annular projection five 5b on push rod 5 crosses annular projection one 2b of needle holder 2, and annular projection six 5c on push rod 5 crosses annular projection three 3d of expansion part 3.After this, push rod 5 is retracted, annular projection three 3d that first annular projection six 5c of push rod 5 is resisted against expansion part 3 drives expansion part 3 to depart from limiting section 1b; After this, annular projection five 5b of push rod 5 be resisted against needle holder 2 annular projection one 2b on and drive needle holder 2 to move down.After this self-destruction is completed again.In the present embodiment, butting section 2c is positioned at the sidepiece of needle holder 2, and limiting section 1b also bends inwards and is resisted against on the downside of the 2c of butting section, is upwards pushed away by butting section 2c, thus restriction needle holder 2 moves down.
Embodiment three
The present embodiment and embodiment one similar, different places is, in the present embodiment, as shown in figure 12, syringe 1 medial wall has the protruding 1e of retaining for preventing expansion part 3 from moving down, and the protruding 1e of retaining to be positioned on the downside of enlarged portion 3a and to lean with enlarged portion 3a.As the concrete shape of the protruding 1e of retaining, the protruding 1e of retaining can be set to the annular coaxial with syringe 1, also can be set to be evenly distributed on syringe 1 medial wall some in block retaining projection 1e.As another kind of embodiment, the protruding 1e of retaining is used for preventing needle holder 2 from moving down, and the protruding 1e of retaining and needle holder 2 lean.Alternatively, retaining projection also can be positioned on expansion part, and syringe medial wall has the retaining groove matched with the shape of retaining projection and position, and retaining projection embeds in retaining groove.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the term such as syringe 1, convex shoulder 1a, limiting section 1b, positive stop strip one 1c, ring-type shoulder block 1d, the protruding 1e of retaining, needle holder 2, positive stop strip two 2a, annular projection one 2b, butting section 2c, expansion part 3, enlarged portion 3a, taper seat 3b, annular projection two 3c, annular projection three 3d, syringe needle 4, push rod 5, annular projection four 5a, annular projection five 5b, annular projection six 5c herein, do not get rid of the probability using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (6)
1. the position-limit mechanism of needle holder in a retractable safety injector, comprise and being arranged between syringe (1) and needle holder (2) for limiting position-limiting unit one that needle holder (2) moves up and being arranged between syringe (1) and needle holder (2) for limiting the position-limiting unit two that needle holder (2) moves down, it is characterized in that, described syringe (1) medial wall has convex shoulder (1a), described convex shoulder (1a) downside has the limiting section (1b) stretched out downwards, described position-limiting unit two comprises limiting section (1b) and is positioned at the expansion part (3) of syringe (1), described expansion part (3) has enlarged portion (3a) in the form of a ring, described enlarged portion (3a) is positioned between limiting section (1b) and syringe (1) sidewall, described enlarged portion (3a) is resisted against on limiting section (1b), described limiting section (1b) bends inwards and is resisted against in needle holder (2), described enlarged portion (3a) is resisted against on syringe (1) medial wall, described limiting section (1b), interference fit between enlarged portion (3a) and syringe (1).
2. the position-limit mechanism of needle holder in retractable safety injector according to claim 1, is characterized in that, described limiting section (1b) in the form of a ring and coaxial with syringe (1).
3. the position-limit mechanism of needle holder in retractable safety injector according to claim 1, is characterized in that, described limiting section (1b) comprises the banking stop that some even circumferences are distributed in convex shoulder (1a) bottom.
4. the position-limit mechanism of needle holder in the retractable safety injector according to claim 1 or 2 or 3, it is characterized in that, the upper side near limiting section (1b) of described enlarged portion (3a) has the taper seat (3b) coaxial with syringe (1), and the downside of taper seat (3b) comparatively upside closer to syringe (1) axis.
5. in the retractable safety injector according to claim 1 or 2 or 3, the position-limit mechanism of needle holder, is characterized in that, the thickness of described limiting section (1b) diminishes from top to bottom gradually.
6. the position-limit mechanism of needle holder in the retractable safety injector according to claim 1 or 2 or 3, it is characterized in that, described syringe (1) medial wall has the retaining projection (1e) for preventing expansion part (3) from moving down, the protruding position (1e) of described retaining is in enlarged portion (3a) downside and lean with enlarged portion (3a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039595.6A CN104548283B (en) | 2015-01-27 | 2015-01-27 | Limit mechanism of needle holder in retraction type safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039595.6A CN104548283B (en) | 2015-01-27 | 2015-01-27 | Limit mechanism of needle holder in retraction type safety syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104548283A true CN104548283A (en) | 2015-04-29 |
| CN104548283B CN104548283B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510039595.6A Active CN104548283B (en) | 2015-01-27 | 2015-01-27 | Limit mechanism of needle holder in retraction type safety syringe |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1057482A (en) * | 1995-10-24 | 1998-03-03 | Ryuyu Chin | Microsyringe |
| CN1579564A (en) * | 2003-08-05 | 2005-02-16 | 黄平德 | Safety syringe |
| CN101347648A (en) * | 2008-05-22 | 2009-01-21 | 林作钱 | Self-locking type self-breaking syringe |
| CN102813981A (en) * | 2011-06-07 | 2012-12-12 | 王祖扬 | Barrel structure for safety auto-destruct syringe |
| WO2013010373A1 (en) * | 2011-07-18 | 2013-01-24 | 倍安德普医疗科技（上海）有限公司 | Safety self-disposable syringe with replaceable needle |
| CN203620013U (en) * | 2013-10-18 | 2014-06-04 | 王祖扬 | Inner needle base structure used for pull-back safe self-destruction syringes capable of replacing needles |
| CN203694276U (en) * | 2013-12-25 | 2014-07-09 | 徐雪花 | Connecting structure for needle base and needle tube in safety injector |
-
2015
- 2015-01-27 CN CN201510039595.6A patent/CN104548283B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1057482A (en) * | 1995-10-24 | 1998-03-03 | Ryuyu Chin | Microsyringe |
| CN1579564A (en) * | 2003-08-05 | 2005-02-16 | 黄平德 | Safety syringe |
| CN101347648A (en) * | 2008-05-22 | 2009-01-21 | 林作钱 | Self-locking type self-breaking syringe |
| CN102813981A (en) * | 2011-06-07 | 2012-12-12 | 王祖扬 | Barrel structure for safety auto-destruct syringe |
| WO2013010373A1 (en) * | 2011-07-18 | 2013-01-24 | 倍安德普医疗科技（上海）有限公司 | Safety self-disposable syringe with replaceable needle |
| CN203620013U (en) * | 2013-10-18 | 2014-06-04 | 王祖扬 | Inner needle base structure used for pull-back safe self-destruction syringes capable of replacing needles |
| CN203694276U (en) * | 2013-12-25 | 2014-07-09 | 徐雪花 | Connecting structure for needle base and needle tube in safety injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104548283B (en) | 2017-05-17 |
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Effective date of registration: 20210202 Address after: 448000 South Ring Road, Shayang Economic Development Zone, Jingmen City, Hubei Province Patentee after: Hubei kelaide Medical Instrument Co.,Ltd. Address before: 317605 No.8, North Street, Chumen Town, Yuhuan County, Taizhou City, Zhejiang Province Patentee before: Xu Xuehua |