CN103285464A - Needle head pull-back type needle-replaceable safe self-destruction syringe - Google Patents
Needle head pull-back type needle-replaceable safe self-destruction syringe Download PDFInfo
- Publication number
- CN103285464A CN103285464A CN2012100493508A CN201210049350A CN103285464A CN 103285464 A CN103285464 A CN 103285464A CN 2012100493508 A CN2012100493508 A CN 2012100493508A CN 201210049350 A CN201210049350 A CN 201210049350A CN 103285464 A CN103285464 A CN 103285464A
- Authority
- CN
- China
- Prior art keywords
- syringe
- needle
- needle stand
- ring
- interchangeable
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
- A61M2005/31508—Means for blocking or restricting the movement of the rod or piston provided on the piston-rod
-
- 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3223—Means impeding or disabling repositioning of used needles at the syringe nozzle
-
- 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
- A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
- A61M5/345—Adaptors positioned between needle hub and syringe nozzle
-
- 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
- A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (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 discloses a needle head pull-back type safety self-destruction syringe with a replaceable needle. It comprises a cylinder body; an inner needle seat body is arranged in the cylinder neck at the end part of the cylinder body; the cylinder neck and the inner needle seat body are matched with each other to form an elastic buffering limiting clamping mechanism; the end of the injector core rod is provided with an asymmetric pull-back locking piece with an elastic function, and the asymmetric structure and the elastic function design can realize the clamping and locking with the inner sleeve type pull-back locking component in the inner cavity of the needle base. Under the stress environment of asymmetric effort, the needle file can deflect to one side when being pulled back into the barrel, and the syringe needle can consequently be to near forty-five angle direction fall to barrel inner wall one side, and after the syringe needle returned the barrel completely, the syringe needle can be locked by the barrel neck, leads to syringe needle and needle file can't be pushed out the barrel neck once more from this, prevents effectively that the syringe needle from being pushed out and causing secondary damage, really realizes the safe self-destruction operation of syringe. The asymmetric elastic pull-back locking piece is a plastic barb body, and is integrated with the core rod into a whole and molded by opening the die once.
Description
Technical field
The present invention relates to technical field of medical, specifically the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type, particularly its mechanical connecting structure.
Background technology
Documents one, the patent No.: ZL200710047077.4, the applying date: 2007.10.16, notification number: CN101411908, patentee: Shanghai DingJianTang biochemistry Science Co., Ltd, this case discloses " a kind of safe self-destruction type vaccine injector ", comprise cylindrical shell, be provided with core bar in the cylindrical shell, core bar is provided with plug near the place, end, be provided with syringe needle in the tube neck of cylindrical shell, the syringe needle place is provided with needle tubing, it is characterized in that: the body of rod sidewall of described core bar end is provided with horizontal cut, vertical breach at horizontal cut and body of rod place, core bar end links, horizontal cut matches with vertical breach, syringe needle is socketed to form by last needle stand and following needle stand, following needle stand inner chamber hollow, following needle stand becomes tubular structure, following needle stand is provided with down the needle holder convex tendon with respect to the other end opening part inwall of installing needle holder, the core bar end is provided with the elastomer that is formed with vertical breach UNICOM by horizontal cut, the core bar body of rod herein has certain elasticity, wherein vertically breach is up-narrow and down-wide shape, and horizontal cut outside opening place upper core club shaft outer wall protrudes from lower core club shaft outer wall herein, horizontal cut can be high outside and low outside shape, it is circular-arc that the core bar end becomes, last needle stand becomes bar shape, last needle stand outer wall epimere is provided with the reinforcement fin, last needle stand outer wall hypomere is provided with fixedly bulge loop of needle stand, last needle stand fixedly the overall diameter of bulge loop greater than last needle stand outer diameter 0.05mm-0.3mm, described needle stand down becomes bar shape, its inner chamber hollow, following needle stand cavity inner wall place is provided with down needle holder annular fixed groove, following needle holder annular fixed groove can with last needle stand fixedly bulge loop match, the internal diameter of following needle holder annular fixed groove upper chamber is less than the fixing external wall external diameter of the bulge loop upper bar 0.1mm-0.35mm of last needle stand, internal diameter≤last the needle stand of following needle holder annular fixed groove lower cavity is the external wall external diameter of bulge loop lower pole fixedly, following needle stand is provided with down the needle holder annular convex rib with respect to the place, other end outer wall end of following needle holder bulge loop, the tube neck inwall place of described cylindrical shell is provided with a neck upper limit ring and tube neck lower limit ring respectively, distance between tube neck upper limit ring and the tube neck lower limit ring is 0.3mm-1.5mm, tube neck upper limit ring protrudes from inwall 0.1mm-0.6mm between a neck upper limit ring and the tube neck lower limit ring, tube neck lower limit ring protrudes from inwall 0.02mm-0.25mm between a neck upper limit ring and the tube neck lower limit ring, the internal diameter of cylinder lumen between the internal diameter 〉=tube neck upper limit ring of tube neck upper limit ring top cylinder lumen and the tube neck lower limit ring, the internal diameter of the internal diameter≤tube neck lower limit ring bottom cylinder lumen of cylinder lumen between tube neck upper limit ring and the tube neck lower limit ring, the internal diameter of cylinder lumen is less than following needle holder annular convex rib external diameter 0.1mm-0.5mm between tube neck upper limit ring and the tube neck lower limit ring, cylinder lumen is provided with the spacing muscle of cylindrical shell with respect to the other end inwall place of tube neck, the spacing muscle of cylindrical shell can be linear annular muscle, many the annular muscle that perpendicular muscle constitutes,, a perpendicular muscle, the annular muscle that a plurality of raised points constitute, the cylinder inboard wall place of the spacing muscle of cylindrical shell bottom is provided with the cylindrical shell inner convex rib, the thickness of the distance between the spacing muscle of cylindrical shell and the cylindrical shell inner convex rib 〉=annular stop sheet, the internal diameter at the spacing muscle of cylindrical shell place is less than the diameter of annular stop sheet.
Documents two, the patent No.: ZL200720067715.4, the applying date: 2007.03.08, notification number: CN201076648, patentee: Shanghai DingJianTang biochemistry Science Co., Ltd, this case discloses " a kind of core bar that has the Metallic hook structure ", comprise the core bar body, the upper end of core bar body is provided with the column fastener, and column fastener place is socketed with plug, it is characterized in that: described plug place is provided with installing hole, is provided with barbed body in the installing hole.
The function of utilizing barbed body to realize needle retractable is arranged in the existing safety injector structure, realize safety injection.General barbed body is metalwork or working of plastics.Metalwork need be processed and cooperate with core bar or assemble, complex manufacturing technology, difficulty is big and stability is not good, has not only increased manufacturing procedure and manufacturing cost, and metalwork itself and assembling process thereof can increase the uncertainties such as hidden danger of product aspect safety and product quality.Structurally still there is defective in existing plastics barb member or incomplete place is arranged, and therefore causes product in use to have potential safety hazard or security breaches.The design of existing plastics back-off spare though can realize the syringe needle function of pulling back, in use, still is in normal trace after syringe needle is pulled back, and syringe needle might be released again causes user by the risk of secondary damage.
In addition, all there are a same difficult problem in existing single needle seat pumpback formula safety self-destructing syringe or safety injector, are exactly engage between needle stand and the cylindrical shell in how solving to stablize and reach certain intensity to meet stability requirement; Simultaneously, required pulling force can not use with convenient too greatly when the pumpback needle stand.Though the stable locking effect of needle stand and cylinder inboard wall in rigid fit structure can reach is difficult to or even can't reaches simultaneously make things convenient for the demand of using.The unstability that plastic material itself exists and the characteristic that is subject to variation of ambient temperature can cause the product stability extreme difference of hard fit structure, and quality and precision all are difficult to control in the production process, almost can't realize producing in batches.
In sum, still need the core bar structure of existing haulback type syringe and the latch-up structure between interior needle stand and the cylindrical shell are further improved, further to improve product safety and stability in use, reach the simplification manufacturing procedure simultaneously, reduce the purpose of manufacturing cost.
Summary of the invention
The object of the present invention is to provide the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type.Lock mutually by the elastic buffer snap fastener between needle stand and the injector cartridge in the syringe.The buffer gap at ingenious utilization engaging position and the plasticity of engaging part, perfect locking and the disengaging effect that realizes both.This elastic buffer snap fastener can be arranged at interior needle stand place, also can be arranged at the cylinder inboard wall place; No matter adopt which kind of mode, as long as form corresponding and snap fastener that cooperatively interact at interior needle stand or cylinder inboard wall place simultaneously.The core bar end is provided with the asymmetric locking piece of band spring function, and this locking piece can lock by engaging mode mutually with the syringe needle inner chamber.When needle stand was pulled back to the injector cartridge, under the strength effect of asymmetric elastic construction, needle stand can stressed taking advantage of a situation change to a lateral deviation; Therefore entry needle also can swing to cylinder inboard wall one side to nearly 45 angular direction; After entry needle is return cylindrical shell fully, syringe needle can be locked by the cylindrical shell cervical region, cause entry needle and needle stand to be released again outside the cylindrical shell thus, prevent that effectively syringe needle from being released the secondary damage cause again, realize the safety self-destruct operation of syringe, overcome the shortcoming and defect that exists in the prior art.
To achieve these goals, first technical scheme of the present invention is: the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type.It comprises cylindrical shell; Needle stand body in being provided with in the tube neck of described cylindrical shell end; Be provided with core bar in the cylindrical shell; Core bar is socketed with plug near the place, end.It is characterized in that: form the spacing snap fastener of elastic buffer between tube neck and the interior needle stand body, the spacing snap fastener of this elastic buffer can be arranged at interior needle stand body outer wall place, also can be arranged at a neck inwall place.
The invention discloses the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type.The end of its syringe core rod is provided with the asymmetric locking piece of pulling back of band spring function; Asymmetry respective outer side edges spring function design can be guaranteed that this locking piece can insert the needle stand inner chamber smoothly, and utilize the function of its elastic dilatation, realizes that asymmetric holding section, both sides and the inner cased type of the needle stand inner chamber locked component holding section of pulling back engages and locks.The design of the annular groove of locked component inner chamber also has the elastic buffer characteristic because inner cased type is pulled back, when with the asymmetric locking piece of pulling back when advanced state is touched, the both can produce the distortion of relative buffering, is convenient to locking piece and snaps in the inner cased type locked component inner chamber of pulling back; When the locking piece pumpback and the inner cased type locked component of pulling back lock mutually.When needle stand was pulled back to the injector cartridge, being subjected under the force environment of asymmetric active force, needle stand can stressedly change to a lateral deviation, and therefore entry needle can swing to cylinder inboard wall one side to nearly 45 angular direction; After entry needle was return cylindrical shell fully, syringe needle can be locked by the cylindrical shell cervical region, caused entry needle and needle stand to be released again outside the cylindrical shell thus, prevented from effectively that syringe needle from being released again to cause secondary damage, really realized the safety self-destruct operation of syringe.When the present invention specifically implemented, the described asymmetric elasticity locking piece of pulling back was a plastics barbed body.This plastics barbed body adopts the design principle of asymmetry and the ingenious cooperation of elastomer structure, uses specific angle and size design, makes the barb body possess the elastic buffer lock function.Pull back locking piece and core bar of above-mentioned asymmetric elasticity is into a single integrated structure, and global facility adopts a die sinking molding, need not processing or follow-up assembling separately, effectively reduces manufacturing cost, has simplified assembly technology, has reduced assembly process.The pull back snap lock effect of part and needle stand inner chamber of the asymmetric elasticity of core bar end is splendid, and the product reasonable integral structure is skillfully constructed, and operation is used simple, and stable working state is easy to apply.Compare existing product design and technology, have significant technical breakthrough in the design, and have outstanding safety and practicality characteristics.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the interchangeable needle stand structural representation of the present invention.
Fig. 3 is needle stand body structure sketch map in the present invention.
Fig. 4 is the partial enlarged drawing of Fig. 3.
Fig. 5 is the vertical view of Fig. 3.
Fig. 6 is the inner cased type of the present invention locked component structural representation of pulling back.
Fig. 7 is tube structure sketch map of the present invention.
Fig. 8 is Fig. 7 A-A view.
Fig. 9 is core bar structure sketch map of the present invention.
Figure 10 is barbed body structural representation of the present invention.
Figure 11 is interior needle stand body and the inner cased type locked component assembly structure sketch map of pulling back.
Figure 12 is the present invention first user mode figure.
Figure 13 is the present invention second user mode figure.
Figure 14 is the present invention the 3rd user mode figure.
Figure 15 is the present invention the 4th user mode figure.
Figure 16 is the present invention the 5th user mode figure.
Figure 17 is the present invention the 6th user mode figure.
The specific embodiment
With reference to the accompanying drawings, the present invention further is described.
The present invention is the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type.It comprises cylindrical shell 1; Needle stand body 3 in being provided with in the tube neck 2 of described cylindrical shell 1 end; Be provided with core bar 5 in the cylindrical shell 1; Core bar 5 is socketed with plug 6 near the place, end.It is different from prior art and is: form the spacing snap fastener of elastic buffer between tube neck 2 and the interior needle stand body 3; Needle stand body 3 outer wall places also can arrange and tube neck 2 inwall places in the spacing snap fastener of this elastic buffer can be arranged at.The stable requirement that engages can be reached between needle stand body and cylindrical shell in the spacing snap fastener of this elastic buffer makes, the light effect that withdraws from can be realized again.
In the specific embodiment of the invention, the spacing snap fastener of described elastic buffer is arranged at interior needle stand body 3 places.Should in needle stand body 3 inner chamber hollows, be provided with the inner cased type locked component 4 of pulling back in the cavity; Perhaps, interior needle stand body 3 outer cover are connected to the jacket-type locked component of pulling back.Interchangeable pin department of assembly 7 is formed at needle stand body 3 tops in described; Elastic packing limiting section 8 is formed at the bottom of interior needle stand body 3; Interchangeable pin department of assembly 7 and elastic packing limiting section 8 are integral the formula monomer structure.Elastic packing limiting section 8 surfaces offer ring-type buffer gap 9; Elastic packing limiting section 8 outer walls in 9 outsides, ring-type buffer gap form the spacing holding section 10 of annular seal; Elastic packing limiting section 8 outer wall places are provided with anti-sidespin convex tendon 13.7 places, interchangeable pin department of assembly form external spiral stricture of vagina department of assembly 11.The end of core bar 5 is provided with the asymmetric elastic locking part of pulling back.
In another specific embodiment of the present invention, the spacing snap fastener of described elastic buffer is arranged at interior needle stand body 3 places.Should in needle stand body 3 inner chamber hollows, be provided with the inner cased type locked component 4 of pulling back in the cavity; Perhaps, interior needle stand body 3 outer cover are connected to the jacket-type locked component of pulling back.Interchangeable pin department of assembly 7 is formed at needle stand body 3 tops in described; Elastic packing limiting section 8 is formed at the bottom of interior needle stand body 3; The 8 one-tenth split type assembly structures in interchangeable pin department of assembly 7 and elastic packing limiting section.Elastic packing limiting section 8 surfaces offer ring-type buffer gap 9; Elastic packing limiting section 8 outer walls in 9 outsides, ring-type buffer gap form the spacing holding section 10 of annular seal; Elastic packing limiting section 8 outer wall places are provided with anti-sidespin convex tendon 13.7 places, interchangeable pin department of assembly form external spiral stricture of vagina department of assembly 11.The end of core bar 5 is provided with the asymmetric elastic locking part of pulling back.
In the specific implementation, the described asymmetric elastic locking part of pulling back is axis with the symmetrical center line of core bar, and the both sides of its axis respectively form a snap-in lock bonding part, and the snap-in lock bonding part of both sides is asymmetric shape; A described side snap-in lock bonding part is higher or lower than opposite side snap-in lock bonding part; The width of a described side snap-in lock bonding part is greater than or less than opposite side snap-in lock bonding part; The snap-in lock bonding part of described one or both sides has elastic construction; Distance between the snap-in lock bonding part outer ledge of a described side and the symmetrical center line of the body of rod is 1mm-20mm.The said structure part of can realizing pulling back has elastic construction in whole or in part, can snap in smoothly in the needle stand cavity, and engaging fully with it when pumpback.Asymmetric snap lock structure can apply asymmetric active force to needle stand, makes needle stand can change to a lateral deviation after entering cylinder lumen, realizes the safety operation of syringe.
In the specific implementation, the described asymmetric elastic locking part of pulling back is a barbed body 12.Described barbed body 12 is plastic material; And it is into a single integrated structure with 5 ones of core bars; A die sinking molding.The consistent performance of material is guaranteed the stability of the whole engaging of core bar lock function, and integrative-structure can omit assembly process, enhances productivity, and reduces manufacturing cost.
In the specific implementation, described barbed body 12 lower ends formation pedestal 14; First folding arm 15 that changes to a lateral deviation is formed at base portion 14 tops; The lateral wall, junction of first folding arm 15 and base portion 14 forms arc chord angle 16 or the knuckle of inner concavity, and this arc chord angle is 45 degree to 179 degree.The lower end of first folding arm 15 is connected with the upper end of base portion 14; The upper end of first folding arm 15 is connected with second folding arm, 17 1 ends, and second folding arm, 17 other ends are unsettled.The inboard that the outside of first folding arm 15 and second folding arm, 17 junctions forms arc surface 18, the first folding arms 15 and second folding arm, 17 junctions forms 2 degree to the interior angle 39 of 90 degree.The width that forms opening between the free end of second folding arm 17 and first folding arm 15 is 0.5mm-40mm; The length of described first folding arm 15 is 0.5mm-50mm; The length of described second folding arm 17 is 0.5mm-60mm.The free end of described second folding arm 17 forms thorn point 24, and the free end of second folding arm 17 protrudes from base portion 14 outer ledges.
In the specific implementation, described core bar 5 places form the reinforcement 21 that four angles such as cross distribute, and reinforcement 21 outer edge are provided with spacing tabs 22.Be connected by at least two contacts 23 between described spacing tabs 22 and the reinforcement 21.After the syringe assembling was finished, the top of spacing tabs 22 just upwards propped up the cylindrical shell lower end, prevented that syringe is subjected to the external force effect before using, and caused core bar displacement forward, caused the syringe accident to be scrapped.During use, only need to bend spacing tabs 22 along the contact, just can be with it from reinforcement 21 cracking-offs.
In the specific implementation, 11 places, external spiral stricture of vagina department of assembly of described interchangeable pin department of assembly 7 are connected with interchangeable needle stand 24, and interchangeable needle stand 24 upper end centre bits are provided with needle tubing 25, form the column cavity 30 with needle tubing 25 UNICOMs in the interchangeable needle stand 24.The inwall place of interchangeable needle stand 24 inner chambers forms the internal coiling stricture of vagina department of assembly 31 that matches with external spiral stricture of vagina department of assembly 11; Column cavity 30 tops are the Rotary-table shape, and the tapering of this Rotary-table is 6:100.This tapering can be guaranteed the sealing property of assembling to be international parameter.
In the specific implementation, described elastic packing limiting section 8 outer wall places are evenly distributed with anti-sidespin convex tendon 13 in the form of a ring, and the end of described anti-sidespin convex tendon 13 is semicircle arcuation or taper.
In the specific implementation, 7 tops, described interchangeable pin department of assembly are circular cone shape, and its tapering is 6:100.The bottom outer wall of interchangeable pin department of assembly 7 forms external spiral stricture of vagina department of assembly 11, and this tapering can be guaranteed the sealing property of assembling to be international parameter.
In the specific implementation, excessive place formation circular step 26 or the ring-type between described interchangeable pin department of assembly 7 and the elastic packing limiting section 8 is domatic.
In the specific implementation, described ring-type buffer gap 9 is integral ring-shaped groove structure, the perhaps segmentation structure of non-integral ring-type.Its notch to the height of bottom land is 0.05mm-4mm; The width of ring-type buffer gap 9 is 0.05mm-4mm; The distance on 10 surperficial cambered surface arc tops, the spacing holding section of ring-type buffer gap 9 outside cell walls and annular seal is 0.1mm-6mm; Distance between cell wall notch place, 9 outside, ring-type buffer gap and the spacing holding section of annular seal 10 outer walls is 0.1mm-6mm; Distance between cell wall bottom land place, 9 outside, ring-type buffer gap and the spacing holding section of annular seal 10 outer walls is 0.1mm-6mm.The surface of the spacing holding section 10 of annular seal becomes arc surfaced, and the spacing holding section of annular seal 10 arcing surfaces push up to the distance of cambered surface top edge and push up to the distance of cambered surface lower limb less than arc.The elastic packing limiting section 8 outer wall places of 10 bottoms, the spacing holding section of described annular seal form annular recess 27.
In the specific implementation, the bottom land of described annular recess 27 and ring-type buffer gap 9 is positioned at same horizontal plane or is higher than the bottom land of ring-type buffer gap 9.
In the specific implementation, the elastic packing limiting section 8 outer wall places of described circular step 26 bottoms form annular seal ring assembling groove 28, are socketed with " O " shape O-ring seal 29 in the annular seal ring assembling groove 28.
In the specific implementation, tube neck 2 outer cover of described cylindrical shell 1 are connected to cylindrical shell sheath 32, for the protection of cylindrical shell end and interior needle stand end construction.
In the specific implementation, the tube neck 2 inwall places of described cylindrical shell 1 are provided with the spacing depression 33 of annular seal that matches with the spacing holding section 10 of annular seal.The degree of depth of the spacing depression 33 of annular seal is 0.01mm-4mm; The height of the spacing depression 33 of annular seal is 0.01mm-6mm.The concave bottom of the spacing depression 20 of annular seal becomes arc surfaced, and the tube neck 2 inwall places of the spacing depression of annular seal 33 bottoms form and the oppositely anti-sidespin convex tendon 34 of preventing that sidespin convex tendon 13 matches.
In the specific implementation, needle stand body 3 cavity inner wall places form at least one interior needle stand annular spacing groove 35 in described, be provided with the inner cased type locked component 4 of pulling back in interior needle stand body 3 cavitys, the inner cased type locked component 4 outer wall places that pull back arrange a position limiting convex ring 36 that matches with interior needle stand annular spacing groove 35 at least.
In the specific implementation, the described inner cased type locked component 4 inner chamber hollows of pulling back, cavity wall forms ring-type snap-in lock bonding part 38 near the lower ending opening place in it, this ring-type snap-in lock bonding part has certain buffering spring function, when above-mentioned asymmetric elastic locking is pulled back part when touching with it in progradation, elastic buffer distortion all can take place in both under the effect of interaction force, and so be convenient to the asymmetric elastic locking part of pulling back and in progradation, skim over ring-type snap-in lock bonding part smoothly.
In the specific implementation, this annular groove 37 is formed at the top of described ring-type snap-in lock bonding part 38.The thickness of annular groove 37 medial walls 40 is 0.01mm-3mm; Annular groove (37) medial wall and annular groove 37 lateral walls 41 form 2 degree to 90 degree angles; The interior diameter that annular groove 37 medial wall upper ends form is 1mm-80mm.Above-mentioned technical parameter has guaranteed that ring-type snap-in lock bonding part 38 possesses elastic buffer function, especially is embodied in 41 places, lateral wall.In the specific implementation, the width of rebate of described annular groove 37 is greater than the low width of groove.
When asymmetric elastic locking is pulled back after part slips into inner cased type and pull back in the locked component 4, pull back core bar, the pull back side end (free end of barbed body second folding arm) of part of asymmetric elastic locking just is stuck in the annular groove 37, causes the locked component 4 complete interlocks of pulling back of core bar end and inner cased type.
In practical operation, as shown in Figure 12 to Figure 17, interchangeable needle stand is rotated into interior needle stand body end, both realize the effect of sealing assembling under the cooperation of spiral lamination structure and 6:100 tapered configuration.Start injection after the imbibition, core bar is slowly advanced, the overall width of part is greater than inner cased type locked component place annular groove 37 internal diameters of pulling back because asymmetric elastic locking is pulled back, after so both touch, the pull back part one side distortion of asymmetric elastic locking makes to enter the inner cased type locked component inner chamber of pulling back after the narrowed width.Pull back after part enters inner chamber when asymmetric elastic locking, lose stressed effect, the asymmetric elastic locking part of pulling back restores to the original state; After injection is finished, pull back core bar, this asymmetric elastic locking part (free end of barbed body second folding arm) side of pulling back just is stuck in inner cased type and pulls back in the annular groove of locked component; Under the effect of core bar pulling force, pulling force by inner cased type pull back locked component conduct in needle stand body place, the elastic packing limiting section place ring-type buffer gap stress deformation of interior needle stand body; Along with the ring-type buffer gap narrows down, the spacing holding section of annular seal skids off in the spacing depression of the annular seal of cylindrical shell, and last whole needle section is drawn into cylinder lumen.Under asymmetric elastic locking was pulled back the effect of part, needle stand can drive syringe needle to be changeed to a lateral deviation, broke away from the normal displacement track, so can't be assembled to again in the neck, realized the safety self-destruct operation of syringe.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that the present invention is concrete to implement to be confined to above-mentioned these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (22)
1. interchangeable pin safe self-breaking syringe of syringe needle haulback type, it comprises: cylindrical shell (1); Needle stand body (3) in being provided with in the tube neck (2) of described cylindrical shell (1) end; Be provided with core bar (5) in the cylindrical shell (1); Core bar (5) is socketed with plug (6) near the place, end, it is characterized in that: form the spacing snap fastener of elastic buffer between tube neck (2) and the interior needle stand body (3).
2. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: needle stand body (3) was located in the spacing snap fastener of described elastic buffer was arranged at, needle stand body (3) inner chamber hollow in being somebody's turn to do, be provided with the inner cased type locked component (4) of pulling back in the cavity, perhaps, interior needle stand body (3) outer cover is connected to the jacket-type locked component of pulling back, interchangeable pin department of assembly (7) is formed at needle stand body (3) top in described, elastic packing limiting section (8) is formed at the bottom of interior needle stand body (3), interchangeable pin department of assembly (7) and elastic packing limiting section (8) are integral the formula monomer structure, elastic packing limiting section (8) surface offers ring-type buffer gap (9), elastic packing limiting section (8) outer wall in the outside, ring-type buffer gap (9) forms the spacing holding section of annular seal (10), elastic packing limiting section (8) outer wall place is provided with anti-sidespin convex tendon (13), interchangeable pin department of assembly (7) locates to form external spiral stricture of vagina department of assembly (11), and the end of core bar (5) is provided with the asymmetric elastic locking part of pulling back.
3. the interchangeable pin safety self-destructing syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: needle stand body (3) was located in the spacing snap fastener of described elastic buffer was arranged at, should in needle stand body (3) inner chamber hollow, be provided with the inner cased type locked component (4) of pulling back in the cavity; Perhaps, interior needle stand body (3) outer cover is connected to the jacket-type locked component of pulling back, interchangeable pin department of assembly (7) is formed at needle stand body (3) top in described, elastic packing limiting section (8) is formed at the bottom of interior needle stand body (3), interchangeable pin department of assembly (7) becomes split type assembly structure with elastic packing limiting section (8), elastic packing limiting section (8) surface offers ring-type buffer gap (9), elastic packing limiting section (8) outer wall in the outside, ring-type buffer gap (9) forms the spacing holding section of annular seal (10), elastic packing limiting section (8) outer wall place is provided with anti-sidespin convex tendon (13), interchangeable pin department of assembly (7) locates to form external spiral stricture of vagina department of assembly (11), and the end of core bar (5) is provided with the asymmetric elastic locking part of pulling back.
4. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 2, it is characterized in that: the described asymmetric elastic locking part of pulling back is axis with the symmetrical center line of core bar, the both sides of its axis respectively form a snap-in lock bonding part, and the snap-in lock bonding part of both sides is asymmetric shape; A described side snap-in lock bonding part is higher or lower than opposite side snap-in lock bonding part; The width of a described side snap-in lock bonding part is greater than or less than opposite side snap-in lock bonding part; The snap-in lock bonding part of described one or both sides has elastic construction; Distance between the snap-in lock bonding part outer ledge of a described side and the symmetrical center line of the body of rod is 1mm-20mm.
5. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1 is characterized in that: the described asymmetric elastic locking part of pulling back is a barbed body (12), and described barbed body (12) is plastic material; Portion is into a single integrated structure with core bar (5); A die sinking molding.
6. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 5 is characterized in that: described barbed body (12) lower end formation base portion (14); First folding arm (15) that changes to a lateral deviation is formed at base portion (14) top; The lateral wall, junction of first folding arm (15) and base portion (14) forms arc chord angle (16) or the knuckle of inner concavity, and this arc chord angle is 45 degree to 179 degree; The lower end of first folding arm (15) is connected with the upper end of base portion (14), and the upper end of first folding arm (15) is connected with second folding arm (17) one ends, and second folding arm (17) other end is unsettled; First folding arm (15) forms arc surface (18) with the outside of second folding arm (17) junction, and first folding arm (15) forms 2 degree to the interior angle (39) of 90 degree with the inboard of second folding arm (17) junction; The width that forms opening between the free end of second folding arm (17) and first folding arm (15) is 0.5mm-40mm; The length of described first folding arm (15) is 0.5mm-50mm; The length of described second folding arm (17) is 0.5mm-60mm.
7. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: described core bar (5) is located to form the reinforcement (21) that four angles such as cross distribute, and reinforcement (21) outer edge is provided with spacing tabs (22).
8. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 4 is characterized in that: be connected by at least two contacts (23) between described spacing tabs (22) and the reinforcement (21).
9. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 3, it is characterized in that: the free end of described second folding arm (17) forms thorn point (24), and the free end of second folding arm (17) protrudes from base portion (14) outer ledge.
10. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: the external spiral stricture of vagina department of assembly (11) of described interchangeable pin department of assembly (7) locates to be connected with interchangeable needle stand (24), interchangeable needle stand (24) upper end centre bit is provided with needle tubing (25), form the column cavity (30) with needle tubing (25) UNICOM in the interchangeable needle stand (24), the inwall place of interchangeable needle stand (24) inner chamber forms the internal coiling stricture of vagina department of assembly (31) that matches with external spiral stricture of vagina department of assembly (11), column cavity (30) top is the Rotary-table shape, and the tapering of this Rotary-table is 6:100.
11. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: described elastic packing limiting section (8) outer wall place is evenly distributed with anti-sidespin convex tendon (13) in the form of a ring, and the end of described anti-sidespin convex tendon (13) is semicircle arcuation or taper.
12. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: top, described interchangeable pin department of assembly (7) is circular cone shape, its tapering is 6:100, and the bottom outer wall of interchangeable pin department of assembly (7) forms external spiral stricture of vagina department of assembly (11).
13. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1 is characterized in that: excessive place formation circular step (26) or ring-type between described interchangeable pin department of assembly (7) and the elastic packing limiting section (8) are domatic.
14. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: described ring-type buffer gap (9) is ring channel structures, its notch to the height of bottom land is 0.05mm-4mm, the width of ring-type buffer gap (9) is 0.05mm-4mm, the distance on ring-type buffer gap (9) outside cell wall and the spacing holding section of annular seal (10) surperficial cambered surface arc top is 0.1mm-6mm, distance between cell wall notch place, the outside, ring-type buffer gap (9) and the spacing holding section of annular seal (10) outer wall is 0.1mm-6mm, distance between cell wall bottom land place, the outside, ring-type buffer gap (9) and the spacing holding section of annular seal (10) outer wall is 0.1mm-6mm, the surface of the spacing holding section of annular seal (10) becomes arc surfaced, the spacing holding section of annular seal (10) arcing surface pushes up to the distance of cambered surface top edge and pushes up to the distance of cambered surface lower limb less than arc, and elastic packing limiting section (8) the outer wall place of bottom, the spacing holding section of described annular seal (10) forms annular recess (27).
15. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 14 is characterized in that: the bottom land of described annular recess (27) and ring-type buffer gap (9) is positioned at same horizontal plane or is higher than the bottom land of ring-type buffer gap (9).
16. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 13, it is characterized in that: elastic packing limiting section (8) the outer wall place of described circular step (26) bottom forms annular seal ring assembling groove (28), is socketed with " O " shape O-ring seal (29) in the annular seal ring assembling groove (28).
17. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1 is characterized in that: tube neck (2) outer cover of described cylindrical shell (1) is connected to cylindrical shell sheath (32).
18. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: tube neck (2) the inwall place of described cylindrical shell (1) is provided with the spacing depression of annular seal (33) that matches with the spacing holding section of annular seal (10), the degree of depth of the spacing depression of annular seal (33) is 0.01mm-4mm, the height of the spacing depression of annular seal (33) is 0.01mm-6mm, the concave bottom of the spacing depression of annular seal (20) becomes arc surfaced, and tube neck (2) the inwall place of the spacing depression of annular seal (33) bottom forms and the oppositely anti-sidespin convex tendon (34) of preventing that sidespin convex tendon (13) matches.
19. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1, it is characterized in that: needle stand body (3) cavity inner wall place forms at least one interior needle stand annular spacing groove (35) in described, be provided with the inner cased type locked component (4) of pulling back in interior needle stand body (3) cavity, inner cased type locked component (4) the outer wall place that pulls back arranges a position limiting convex ring (36) that matches with interior needle stand annular spacing groove (35) at least.
20. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 1 is characterized in that: described inner cased type locked component (4) the inner chamber hollow of pulling back, cavity wall forms ring-type snap-in lock bonding part (38) near lower ending opening place in it.
21. the interchangeable pin safe self-breaking syringe of a kind of syringe needle haulback type according to claim 20, it is characterized in that: annular groove (37) is formed at the top of described ring-type snap-in lock bonding part (38), the thickness of annular groove (37) medial wall (40) is 0.01mm-3mm, annular groove (37) medial wall and annular groove (37) lateral wall (41) form 2 degree to 90 degree angles, and the interior diameter that annular groove (37) medial wall upper end forms is 1mm-80mm.
22. the interchangeable pin safety self-destructing syringe of a kind of syringe needle haulback type according to claim 21 is characterized in that: the width of rebate of described annular groove (37) is greater than the low width of groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210049350.8A CN103285464B (en) | 2012-02-29 | 2012-02-29 | Needle head pull-back type needle-replaceable safe self-destruction syringe |
| PCT/CN2012/000928 WO2013127037A1 (en) | 2012-02-29 | 2012-07-05 | Needle retractable-type replaceable-needle safe self-destructing syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210049350.8A CN103285464B (en) | 2012-02-29 | 2012-02-29 | Needle head pull-back type needle-replaceable safe self-destruction syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103285464A true CN103285464A (en) | 2013-09-11 |
| CN103285464B CN103285464B (en) | 2016-05-11 |
Family
ID=49081516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210049350.8A Active CN103285464B (en) | 2012-02-29 | 2012-02-29 | Needle head pull-back type needle-replaceable safe self-destruction syringe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103285464B (en) |
| WO (1) | WO2013127037A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014056290A1 (en) * | 2012-10-11 | 2014-04-17 | Wang Zuyang | Safe self-destructing injector with pull-back type needle |
| WO2015070524A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back replaceable-needle safe self-destroying syringe |
| CN106344131A (en) * | 2016-08-31 | 2017-01-25 | 郑州大学第附属医院 | Ovarian tissue section pushing device |
| CN110876824A (en) * | 2018-09-06 | 2020-03-13 | 广东海鸥医疗器械股份有限公司 | Syringe |
| CN115282361A (en) * | 2022-08-16 | 2022-11-04 | 核工业总医院 | Minimally invasive negative pressure drainage device for plastic surgery |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200987815Y (en) * | 2006-12-05 | 2007-12-12 | 刘泽木 | A safety self-destroy injector |
| CN201101782Y (en) * | 2007-10-16 | 2008-08-20 | 上海顶尖堂生化科技有限公司 | Safe self-destroying vaccine injector |
| CN101411907A (en) * | 2007-10-16 | 2009-04-22 | 上海顶尖堂生化科技有限公司 | Safety self-destruction injector |
| CN101474443A (en) * | 2009-01-07 | 2009-07-08 | 周令刚 | Improved type safe self-destroyed syringe |
| CN201643229U (en) * | 2010-08-19 | 2010-11-24 | 江苏亿乐医疗用品有限公司 | Safety syringe needle stand structure |
| CN202105275U (en) * | 2011-06-07 | 2012-01-11 | 倍安德普医疗科技（上海）有限公司 | Safe self-destruction syringe |
| CN102886089A (en) * | 2011-07-18 | 2013-01-23 | 王祖扬 | Safe self-destroying syringe with changeable needle |
| CN202892570U (en) * | 2012-02-29 | 2013-04-24 | 王祖扬 | A need-pullback-type needle-replaceable safe self-destruction syringe |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001085238A2 (en) * | 2000-05-10 | 2001-11-15 | Peter Balfour Dugmore | Safety syringe assembly |
| CN2706181Y (en) * | 2004-05-28 | 2005-06-29 | 黄平德 | Injector with improved needle head jointing structure |
| CN2710663Y (en) * | 2004-06-30 | 2005-07-20 | 张金荣 | Improved structure of needle fastening seat for safety syringe tube |
| CN2798967Y (en) * | 2005-02-02 | 2006-07-26 | 罗正已 | Needle-fixing pedestal for safety injection syringe |
| CN101411908B (en) * | 2007-10-16 | 2011-03-09 | 上海顶尖堂生化科技有限公司 | Safe self-destruction type vaccine injector |
| CN201735028U (en) * | 2010-06-17 | 2011-02-09 | 昆山和兴医疗科技有限公司 | Safe self-destruction injection syringe with locking structure |
| CN202105269U (en) * | 2011-06-07 | 2012-01-11 | 倍安德普医疗科技（上海）有限公司 | Inner needle base structure for safe self-destruction syringe |
| CN202236663U (en) * | 2011-07-18 | 2012-05-30 | 倍安德普医疗科技（上海）有限公司 | Safety self-destruction type syringe capable of changing needle |
-
2012
- 2012-02-29 CN CN201210049350.8A patent/CN103285464B/en active Active
- 2012-07-05 WO PCT/CN2012/000928 patent/WO2013127037A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200987815Y (en) * | 2006-12-05 | 2007-12-12 | 刘泽木 | A safety self-destroy injector |
| CN201101782Y (en) * | 2007-10-16 | 2008-08-20 | 上海顶尖堂生化科技有限公司 | Safe self-destroying vaccine injector |
| CN101411907A (en) * | 2007-10-16 | 2009-04-22 | 上海顶尖堂生化科技有限公司 | Safety self-destruction injector |
| CN101474443A (en) * | 2009-01-07 | 2009-07-08 | 周令刚 | Improved type safe self-destroyed syringe |
| CN201643229U (en) * | 2010-08-19 | 2010-11-24 | 江苏亿乐医疗用品有限公司 | Safety syringe needle stand structure |
| CN202105275U (en) * | 2011-06-07 | 2012-01-11 | 倍安德普医疗科技（上海）有限公司 | Safe self-destruction syringe |
| CN102886089A (en) * | 2011-07-18 | 2013-01-23 | 王祖扬 | Safe self-destroying syringe with changeable needle |
| CN202892570U (en) * | 2012-02-29 | 2013-04-24 | 王祖扬 | A need-pullback-type needle-replaceable safe self-destruction syringe |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014056290A1 (en) * | 2012-10-11 | 2014-04-17 | Wang Zuyang | Safe self-destructing injector with pull-back type needle |
| WO2015070524A1 (en) * | 2013-10-18 | 2015-05-21 | 王祖扬 | Pulled-back replaceable-needle safe self-destroying syringe |
| CN106344131A (en) * | 2016-08-31 | 2017-01-25 | 郑州大学第附属医院 | Ovarian tissue section pushing device |
| CN106344131B (en) * | 2016-08-31 | 2019-06-28 | 郑州大学第一附属医院 | A kind of ovary tissue slice driving means |
| CN110876824A (en) * | 2018-09-06 | 2020-03-13 | 广东海鸥医疗器械股份有限公司 | Syringe |
| CN115282361A (en) * | 2022-08-16 | 2022-11-04 | 核工业总医院 | Minimally invasive negative pressure drainage device for plastic surgery |
| CN115282361B (en) * | 2022-08-16 | 2023-07-18 | 核工业总医院 | Minimally invasive negative pressure drainage device for plastic and cosmetic surgery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103285464B (en) | 2016-05-11 |
| WO2013127037A1 (en) | 2013-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202892570U (en) | A need-pullback-type needle-replaceable safe self-destruction syringe | |
| CN202569090U (en) | Needle-pulling-back safe self-destructive syringe | |
| CN202105269U (en) | Inner needle base structure for safe self-destruction syringe | |
| CN202105275U (en) | Safe self-destruction syringe | |
| CN103285464B (en) | Needle head pull-back type needle-replaceable safe self-destruction syringe | |
| CN202236663U (en) | Safety self-destruction type syringe capable of changing needle | |
| CN202569091U (en) | Sleeve-type pullback locking assembly for pullback safety self-destruction syringe | |
| CN203634589U (en) | Pullback type fixing needle safety auto-disable syringe | |
| CN203620014U (en) | Pullback needle replaceable safe self-destruction injector | |
| CN202161645U (en) | Needle-changeable internal needle base structure for safety self-destruction type syringe | |
| CN203620007U (en) | Needle base structure used for pull-back safe self-destruction syringes with fixed needles | |
| CN103285466B (en) | Needle head pull-back type safe self-destruction syringe | |
| CN202376562U (en) | Cylinder structure used for safe self-destruction type syringe | |
| CN102886089A (en) | Safe self-destroying syringe with changeable needle | |
| CN202569092U (en) | Needle seat structure used for safety self-destruction syringe | |
| CN103372250B (en) | Back-pulling type safety self-locking self-destroying syringe | |
| CN202777324U (en) | Safe self-destructing type syringe capable of changing needle | |
| CN202777314U (en) | Core rod structure used for pullback type safe self-destructing type syringe | |
| CN202777315U (en) | Replaceable needle inner needle seat structure for safe self-destructing type syringe | |
| CN202569093U (en) | Inner needle seat structure for replaceable needle for safety self-destruction syringe | |
| CN103285465A (en) | Core rod structure for pullback-type safe self-destructive syringe | |
| CN102813981A (en) | Barrel structure for safety auto-destruct syringe | |
| CN102813985A (en) | Safety self-destruction syringe | |
| CN203829420U (en) | Syringe needle pull-back type safety self-destruction injection syringe | |
| CN203408310U (en) | Inner needle seat structure for retractable safety auto-disable syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| 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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220429 Address after: 401346 1-1 and 1-2, building 1, No. 16, Shigui Avenue, Jieshi Town, Banan District, Chongqing Patentee after: Chongqing pharmaceutical group Weixun Medical Technology Co.,Ltd. Address before: 200336 Room 301, No. 25, Lane 99, huangjincheng Road, Changning District, Shanghai Patentee before: Wang Zuyang |