CN201101783Y - Safe self-destructing syringe - Google Patents
Safe self-destructing syringe Download PDFInfo
- Publication number
- CN201101783Y CN201101783Y CNU2007200754767U CN200720075476U CN201101783Y CN 201101783 Y CN201101783 Y CN 201101783Y CN U2007200754767 U CNU2007200754767 U CN U2007200754767U CN 200720075476 U CN200720075476 U CN 200720075476U CN 201101783 Y CN201101783 Y CN 201101783Y
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- China
- Prior art keywords
- needle holder
- annular muscle
- muscle
- tube neck
- diameter
- Prior art date
- 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 discloses a security self-destruction type injector, which is characterized in that the top end of a core bar has an installation hole, the installation hole is provided with an S-shaped pullback hook which is composed of an upper and a lower hook bodies, and the lower hook body is arranged in the installation hole. The injector has the advantages of convenient product assembly, automatic mass manufacture, high manufacturing efficiency, making cost reduction, reasonable product integral structure and high working stability in practical using test. The pullback device at the end of the core bar of the injector can be tightly matched with the needle seat, the integral pinhead can be pulled into an inner cavity of the cylinder of the injector to realize security effect and prevent health workers and other people from being injured by error in operation, and the injector has obvious characteristics and advancement.
Description
Technical field:
This utility model relates to technical field of medical, a kind of specifically safety self-destructing syringe, particularly its mechanical connecting structure.
Background technology:
There is following shortcoming in existing safety injector structure: 1, product structure more complicated, and required parts are more, increased the manufacturing cost of product; 2, the parts of product are more, cause assembling procedure loaded down with trivial details, even the project organization of some product can't be realized full-automatic production in enormous quantities at all; 3, the scale error that produces during the existing safety injector part demoulding is bigger, cause product again in the actual mechanical process fault rate higher; 4, product design structure is aging, compares the shortage market competitiveness with international like product.
Documents one, the patent No.: ZL 02268351.8, notification number: CN2552547, patentee: Yu Dezhen, a kind of " disposable multifunction safety injector " disclosed in this case, the main feature of this syringe is: syringe is provided with the pintle alignment pin, the outstanding position of syringe afterbody, adopt slick and sly shape, the quadri-edge bolt position of pintle is provided with round and dowel hole, and the handgrip part of pintle is cylindrical, at the bottom of afterbody is spill, pin hole place on the syringe needle adopts the blunt structure of anterior sharp rear portion circle, needle cap is by length, short medicated cap two parts constitute, and wherein the leading section of long medicated cap is provided with bonding sand rib, add that simultaneously short medicated cap prevents that the sand rib is worn with extraneous the contact, the rear portion of long medicated cap is provided with the spile that carries baffle plate, and the excircle of long medicated cap is and is interrupted spiralling dimpled grain or burr shape.
Documents two, the patent No.: ZL02241525.4, notification number: CN2560363, patentee: Hengwang International Co., Ltd., a kind of " syringe needle of haulback safety syringe and syringe coupling apparatus " disclosed in this case, its claim content is: a syringe needle, one syringe and a plunger, this syringe needle is to be inserted in the syringe by the opening of back end of syringe, this syringe needle has a needle body and a needle stand that supplies needle body to plug, this syringe is a hollow cylinder, its front end forms the syringe needle socket, inserts combination for syringe needle by the place ahead, and this hub outer surface is provided with at least one circle projection; And the inner wall surface of syringe top syringe needle socket part is provided with and the corresponding at least one circle groove of hub outer surface projection; Syringe needle can be inserted smoothly and be fixed on the syringe needle socket of syringe, force-applied again being drawn under the syringe in the side space.
Documents three, the patent No.: ZL01243599.6, notification number: CN2501514, patentee: Medical High Molecular Product Co., Ltd., Shandong Weigao Group, a kind of " disposable use self-destroy safety injector " disclosed in this case, its claim content is: a kind of disposable use self-destroy safety injector, it comprises syringe, needle holder, sealing ring, piston, push rod, the syringe front end has cylindrical hole, the needle holder slip is packed in the syringe cylindrical hole, the needle holder rear end is provided with the puncture cone of band handle, piston nose is provided with thin film region, the push rod front end is provided with collet in the piston, and syringe front end cylindrical hole inwall is axially arranged with some strip bulges, correspondingly is axially arranged with some strip grooves on the needle holder outer wall.The needle holder rear portion is the flat tapered of certain taper.
This shows, structurally still there are many shortcomings in above-mentioned existing safety injector, remaining the technical staff constantly improves, make the structure of product more become rationalization, simplification, stabilisation, practicability, change existing safety injector parts assembling mode thus, improve 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 purpose of this utility model is to provide a kind of safety self-destructing syringe, and 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, the technical solution of the utility model is: a kind of safety self-destructing syringe, it mainly comprises cylindrical shell, the end of cylindrical shell is the tube neck, be provided with needle holder in the tube neck, be provided with needle tubing in the needle holder, cylinder lumen is provided with core bar, the core bar end is provided with plug, it is characterized in that: the top of described core bar is provided with installing hole, is provided with the S shape hook of pulling back in the installing hole, and the S shape hook of pulling back is made of upper hook body and lower hook body, following structure body places in the installing hole, lower hook body becomes V-shape, and a side arm of lower hook body becomes vertical configuration, and parallel with the installing hole inwall and be close to the installing hole inwall, upper hook body becomes inverted V-shape, one side arm of upper hook body becomes with a side arm of above-mentioned lower hook body less than the angle of 180 degree greater than 90 degree, and upper hook body becomes inverted V-shape, and the Breadth Maximum between its both arms is greater than needle holder inner chamber interior diameter, and lower hook body becomes V-shape, and the Breadth Maximum between its both arms is greater than installing hole inner chamber width.
The utility model discloses a kind of safety self-destructing syringe, it is mainly by cylindrical shell, the tube neck, needle holder, needle tubing, core bar, the S shape hook of pulling back, formations such as plug, the S shape hook of pulling back can be drawn in needle holder in the cylindrical shell, realize safe effect, and make needle holder after entering cylinder lumen to lopsidedness, causing needle holder to be pushed gets back in the syringe cylinder neck again, the product assembling is convenient, needle holder can be assembled in the syringe cylinder neck from top to bottom, can realize full-automatic production in enormous quantities, effectively improved production efficiency, reduce manufacturing cost, the product reasonable integral structure is in actual service test, working stability performance height, the mechanism that pulls back of piston boom end can closely cooperate with needle stand, and syringe needle integral body is drawn in the syringe cylinder intracoelomic cavity, realizes safe effect, avoided accidental injury medical personnel in operation and other related personnel, product has outstanding substantive distinguishing features and marked improvement.
Description of drawings:
Fig. 1 is this utility model structural representation
Fig. 2 is this utility model needle holder structural representation
Fig. 3 is this utility model needle holder end vertical view
Fig. 4 is this utility model S shape hook structure sketch map of pulling back
Fig. 5 is this utility model core bar structure sketch map
Fig. 6 is this utility model core bar end vertical view
Fig. 7 is this utility model tube structure sketch map
Fig. 8 is this utility model Fig. 7 partial enlarged drawing
Fig. 9 is this utility model jacket structure sketch map
Figure 10 is this utility model plug structural representation
Figure 11 is this utility model needle tubing structural representation
Figure 12 is this utility model first user mode reference diagram
Figure 13 is this utility model Figure 12 partial enlarged drawing
Figure 14 is this utility model second user mode reference diagram
Figure 15 is this utility model Figure 14 partial enlarged drawing
Figure 16 is this utility model the 3rd user mode reference diagram
Wherein:
1 cylindrical shell
2 necks
3 needle holder
4 needle tubings
5 core bars
6 installing holes
The 7S shape hook of pulling back
8 upper hook bodies
9 times structure bodies
10 needle holder steps
11 fins
12 needle holder position limiting convex rings
Annular muscle on 13
14 times annular muscle
15 cylindrical shell steps
16 perpendicular muscle of neck
Spacing ring muscle in 17 cylindrical shells
18 core bar spacing rings
19 sheaths
20 sheath spacing rings
21 plugs
The specific embodiment:
With reference to the accompanying drawings, this utility model further is described
This utility model is a kind of safety self-destructing syringe, it mainly comprises cylindrical shell 1, the end of cylindrical shell 1 is a tube neck 2, be provided with needle holder 3 in the tube neck 2, be provided with needle tubing 4 in the needle holder 3, cylinder lumen is provided with core bar 5, core bar 5 ends are provided with plug 21, it is different from prior art and is: the top of described core bar 5 is provided with installing hole 6, be provided with the S shape hook 7 of pulling back in the installing hole 6, the S shape hook 7 of pulling back can be thread like body or plates, the S shape hook 7 of pulling back is made of upper hook body 8 and lower hook body 9, following structure body 9 places in the installing hole 6,9 one-tenth V-shapes of lower hook body, one side arm of lower hook body 9 becomes vertical configuration, and it is parallel with installing hole 6 inwalls and be close to installing hole 6 inwalls, 8 one-tenth inverted V-shapes of upper hook body, one side arm of upper hook body 8 becomes with a side arm of above-mentioned lower hook body 9 less than the angle of 180 degree greater than 90 degree, 8 one-tenth inverted V-shapes of upper hook body, Breadth Maximum between its both arms is greater than needle holder 3 inner chamber interior diameters, and 9 one-tenth V-shapes of lower hook body, Breadth Maximum between its both arms is greater than installing hole 6 inner chamber width, the upper diameter of described needle holder 3 is less than lower diameter, form needle holder step 10 between top and the bottom, the outer wall place on needle holder 3 tops is provided with four fins 11, become 45 angles of spending between the every fin 11, symmetrical in twos between fin 11 and the fin 11, the side of fin 11 is fixed on needle holder 3 outer walls, the base of fin 11 props up needle holder step 10 upper surfaces, the total length of line is 3mm-9mm between fin 11 and the fin 11, the length of monolithic fin 11 is 1.5mm-15mm, the overall diameter at needle holder step 10 places is greater than the total length 0.15mm-3mm of line between fin 11 and the fin 11, the outer wall place of needle holder 3 bottoms is provided with needle holder position limiting convex ring 12, the thickness of needle holder position limiting convex ring 12 is 0.1mm-1.8mm, the external diameter of needle holder position limiting convex ring 12 is greater than the overall diameter 0.13mm-20mm at needle holder step 10 places, the external diameter of needle holder position limiting convex ring 12 is greater than the needle holder overall diameter 0.1mm-0.8mm of needle holder position limiting convex ring 12 bottoms, the upper surface of described needle holder step 10 is 0.5mm-16mm to the distance between needle holder position limiting convex ring 12 upper surfaces, and described needle holder position limiting convex ring 12 upper surfaces are 2mm-15mm to the distance of needle holder 3 bottoms.The inwall place of described tube neck 2 is provided with the annular convex rib that twice are parallel to each other, the annular convex tendon of these twice is respectively on the neck annular muscle 14 under the annular muscle 13 and tube neck, the width of going up annular muscle 13 is 0.2mm-1.5mm, the width of annular muscle 14 is 0.2mm-1.2mm down, go up annular muscle 13 and can be linear annular muscle with following annular muscle 14, many the annular muscle that perpendicular muscle constitutes, the annular muscle that a plurality of raised points constitute, upward annular muscle 13 can be in the top of a neck 2 inwalls, annular muscle 14 also can be in the bottom of tube neck 2 inwalls down, but the distance that goes up between annular muscle 13 and the following annular muscle 14 is 0.2-1.5mm, go up tube neck intracavity diameter 〉=the upward annular muscle 13 and the tube neck intracavity diameter between the annular muscle 14 down on annular muscle 13 tops, go up the tube neck intracavity diameter of tube neck intracavity diameter≤following annular muscle 14 bottoms between annular muscle 13 and the following annular muscle 14, go up the internal diameter of the internal diameter≤following annular muscle 14 of annular muscle 13, go up internal diameter≤the upward annular muscle 13 and the tube neck intracavity diameter 0.1mm-0.8mm between the annular muscle 14 down of annular muscle 13, the internal diameter of following annular muscle 14≤upward annular muscle 13 and the tube neck intracavity diameter 0.02mm-0.5mm between the annular muscle 14 down, the thickness of described tube neck 2 walls is 0.4mm-1.4mm, the overall diameter of tube neck 2 is less than the overall diameter of cylindrical shell 1, the intersection of tube neck 2 and cylindrical shell 1 forms cylindrical shell step 15, tube neck 2 outer walls are provided with the perpendicular muscle 16 of twice tube neck at least, the side of the perpendicular muscle 16 of tube neck is fixed in a neck 2 outer walls, cylindrical shell step 15 places are fixed on the base of the perpendicular muscle 16 of tube neck, the height of length 〉=1/3rd neck 2 of the perpendicular muscle 16 of tube neck, thickness 〉=the 0.1mm of the perpendicular muscle 16 of tube neck, the height of tube neck 2 is 3mm-20mm, and the barrel dliameter intracavity diameter is 3mm-9mm.The inwall place of described cylindrical shell 1 inner chamber bottom is provided with spacing ring muscle 17 in the cylindrical shell.The body of rod place of described plug 21 bottom core bars is provided with the core bar spacing ring 18 of level, and core bar spacing ring 18 diameters are greater than the interior diameter of spacing ring muscle 17 in the cylindrical shell.Be socketed with sheath 19 outside the described needle holder 3, the bottom of sheath 19 outer walls is provided with sheath spacing ring 20, and when assembling was finished, sheath spacing ring lower surface propped up a needle holder step upper surface and a tube neck upper end.
In the specific implementation, suck start injection behind the medicinal liquid, as shown in Figure 12, when syringe is soon finished, the pull back upper hook body of hook of S shape props up the needle holder bottom, because upper hook body becomes inverted V-shape, Breadth Maximum between its both arms is greater than needle holder inner chamber interior diameter, so upper hook body can meet obstructions when advancing herein, enforce core bar more forward slightly, upper hook body is taken advantage of a situation and is entered the needle holder inner chamber, as shown in Figure 14, at this moment, the angle of one side arm of upper hook body and a side arm of lower hook body can be approximated to 180 degree, two side arms is state in line, the S shape hook of pulling back can apply certain bounce to the needle holder inwall in this state, make upper hook body be stuck in intracavity in the needle holder, as shown in Figure 16, pull back core bar, can take advantage of a situation and snap in the needle holder inwall in the tip of upper hook body, make the tight interlock of needle holder and core bar, pull back core bar again and just the needle holder of band needle tubing can be drawn in the syringe cylinder intracoelomic cavity, at this moment, upper hook body can return to initial condition, causes needle holder to lopsidedness, even if promoting core bar forward like this, needle holder also can't be pushed in the neck, core bar is pulled back always, prop up spacing ring muscle in the cylindrical shell up to the core bar spacing ring, core bar again can't pull back, this moment along the vee at core bar body of rod place with core bar fracture just can, so just finished the operating process of whole injection of safety injector and safety self-destruct.
Claims (10)
1, a kind of safety self-destructing syringe, it mainly comprises cylindrical shell (1), the end of cylindrical shell (1) is a tube neck (2), be provided with needle holder (3) in the tube neck (2), be provided with needle tubing (4) in the needle holder (3), cylinder lumen is provided with core bar (5), core bar (5) end is provided with plug (21), it is characterized in that: the top of described core bar (5) is provided with installing hole (6), be provided with the S shape hook (7) of pulling back in the installing hole (6), S shape is pulled back hook (7) by upper hook body (8) and lower hook body (9) formation, following structure body (9) places in the installing hole (6), lower hook body (9) becomes V-shape, one side arm of lower hook body (9) becomes vertical configuration, and it is parallel with installing hole (6) inwall and be close to installing hole (6) inwall, upper hook body (8) becomes inverted V-shape, one side arm of upper hook body (8) becomes with a side arm of above-mentioned lower hook body (9) less than the angle of 180 degree greater than 90 degree, upper hook body (8) becomes inverted V-shape, Breadth Maximum between its both arms is greater than needle holder (3) inner chamber interior diameter, and lower hook body (9) becomes V-shape, and the Breadth Maximum between its both arms is greater than installing hole (6) inner chamber width.
2, a kind of safety self-destructing syringe according to claim 1, it is characterized in that: the upper diameter of described needle holder (3) is less than lower diameter, form needle holder step (10) between top and the bottom, the outer wall place on needle holder (3) top is provided with four fins (11), become the angle of 45 degree between the every fin (11), symmetrical in twos between fin (11) and the fin (11), the side of fin (11) is fixed on needle holder (3) outer wall, the base of fin (11) props up needle holder step (10) upper surface, the total length of line is 3mm-9mm between fin (11) and the fin (11), the length of monolithic fin (11) is 1.5mm-15mm, the overall diameter that needle holder step (10) is located is greater than the total length 0.15mm-3mm of line between fin (11) and the fin (11), the outer wall place of needle holder (3) bottom is provided with needle holder position limiting convex ring (12), the thickness of needle holder position limiting convex ring (12) is 0.1mm-1.8mm, the overall diameter 0.13mm-20mm that the external diameter of needle holder position limiting convex ring (12) is located greater than needle holder step (10), the external diameter of needle holder position limiting convex ring (12) is greater than the needle holder overall diameter 0.1mm-0.8mm of needle holder position limiting convex ring (12) bottom.
3, a kind of safety self-destructing syringe according to claim 1 is characterized in that: the upper surface of described needle holder step (10) is 0.5mm-16mm to the distance between needle holder position limiting convex ring (12) upper surface.
4, a kind of safety self-destructing syringe according to claim 1 is characterized in that: described needle holder position limiting convex ring (12) upper surface is 2mm-15mm to the distance of needle holder (3) bottom.
5, a kind of safety self-destructing syringe according to claim 1, it is characterized in that: the inwall place of described tube neck (2) is provided with the annular convex rib that twice are parallel to each other, the annular convex tendon of these twice is respectively on the neck annular muscle (14) under annular muscle (13) and the tube neck, the width of going up annular muscle (13) is 0.2mm-1.5mm, the width of annular muscle (14) is 0.2mm-1.2mm down, upward annular muscle (13) and following annular muscle (14) can be linear annular muscle, many the annular muscle that perpendicular muscle constitutes, the annular muscle that a plurality of raised points constitute, upward annular muscle (13) can be in the top of a neck (2) inwall, annular muscle (14) also can be in the bottom of tube neck (2) inwall down, but the distance that goes up between annular muscle (13) and the following annular muscle (14) is 0.2-1.5mm, go up tube neck intracavity diameter 〉=the upward annular muscle (13) and the tube neck intracavity diameter between the annular muscle (14) down on annular muscle (13) top, go up the tube neck intracavity diameter of tube neck intracavity diameter≤following annular muscle (14) bottom between annular muscle (13) and the following annular muscle (14), go up the internal diameter of the internal diameter≤following annular muscle (14) of annular muscle (13), go up internal diameter≤the upward annular muscle (13) and the tube neck intracavity diameter 0.1mm-0.8mm between the annular muscle (14) down of annular muscle (13), the internal diameter of following annular muscle (14)≤upward annular muscle (13) and the neck intracavity diameter 0.02mm-0.5mm between the annular muscle (14) down.
6, a kind of safety self-destructing syringe according to claim 1, it is characterized in that: the thickness of described tube neck (2) wall is 0.4mm-1.4mm, the overall diameter of tube neck (2) is less than the overall diameter of cylindrical shell (1), the intersection of tube neck (2) and cylindrical shell (1) forms cylindrical shell step (15), tube neck (2) outer wall is provided with the perpendicular muscle (16) of twice tube neck at least, the side of the perpendicular muscle (16) of tube neck is fixed in a neck (2) outer wall, the base of the perpendicular muscle (16) of tube neck is fixed in cylindrical shell step (15) and is located, the height of length 〉=1/3rd neck (2) of the perpendicular muscle (16) of tube neck, thickness 〉=the 0.1mm of the perpendicular muscle (16) of tube neck, the height of tube neck (2) is 3mm-20mm, and the barrel dliameter intracavity diameter is 3mm-9mm.
7, a kind of safety self-destructing syringe according to claim 1 is characterized in that: the inwall place of described cylindrical shell (1) inner chamber bottom is provided with spacing ring muscle (17) in the cylindrical shell.
8, a kind of safety self-destructing syringe according to claim 1, it is characterized in that: the body of rod place of described plug (21) bottom core bar is provided with the core bar spacing ring (18) of level, and core bar spacing ring (18) diameter is greater than the interior diameter of spacing ring muscle (17) in the cylindrical shell.
9, a kind of safety self-destructing syringe according to claim 1 is characterized in that: described needle holder (3) is outer to be socketed with sheath (19), and the bottom of sheath (19) outer wall is provided with sheath spacing ring (20).
10, a kind of safety self-destructing syringe according to claim 1 is characterized in that: the described S shape hook (7) of pulling back can be thread like body or plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200754767U CN201101783Y (en) | 2007-10-16 | 2007-10-16 | Safe self-destructing syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200754767U CN201101783Y (en) | 2007-10-16 | 2007-10-16 | Safe self-destructing syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201101783Y true CN201101783Y (en) | 2008-08-20 |
Family
ID=39948800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200754767U Expired - Fee Related CN201101783Y (en) | 2007-10-16 | 2007-10-16 | Safe self-destructing syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201101783Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435339A (en) * | 2015-10-23 | 2016-03-30 | 双峰格雷斯海姆医药玻璃（丹阳）有限公司 | Clamping type bottle |
-
2007
- 2007-10-16 CN CNU2007200754767U patent/CN201101783Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435339A (en) * | 2015-10-23 | 2016-03-30 | 双峰格雷斯海姆医药玻璃（丹阳）有限公司 | Clamping type bottle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080820 Termination date: 20131016 |