CN200998476Y - Ultra-thin injection needle - Google Patents
Ultra-thin injection needle Download PDFInfo
- Publication number
- CN200998476Y CN200998476Y CNU2006201235255U CN200620123525U CN200998476Y CN 200998476 Y CN200998476 Y CN 200998476Y CN U2006201235255 U CNU2006201235255 U CN U2006201235255U CN 200620123525 U CN200620123525 U CN 200620123525U CN 200998476 Y CN200998476 Y CN 200998476Y
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- China
- Prior art keywords
- entry needle
- point
- needle
- base material
- pierce
- 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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- 238000002347 injection Methods 0.000 title description 5
- 239000007924 injection Substances 0.000 title description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 12
- 230000036407 pain Effects 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 57
- 238000005323 electroforming Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 17
- 239000000758 substrate Substances 0.000 description 11
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 230000014509 gene expression Effects 0.000 description 8
- HVBSAKJJOYLTQU-UHFFFAOYSA-N 4-aminobenzenesulfonic acid Chemical compound NC1=CC=C(S(O)(=O)=O)C=C1 HVBSAKJJOYLTQU-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229950000244 sulfanilic acid Drugs 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 102000004877 Insulin Human genes 0.000 description 1
- 108090001061 Insulin Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229940125396 insulin Drugs 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/02—Tubes; Rings; Hollow bodies
-
- 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
- A61M5/329—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 characterised by features of the needle shaft
-
- 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
- A61M2207/00—Methods of manufacture, assembly or production
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a syringe needle used when the liquid such as liquid medicine, etc. is injected into the body. The syringe needle is a hollow tubular body from the base part to the tip part used for puncturing, and the external diameter of the tip part for puncturing is below 0.25 mm. From the base part to the tip end face of tip part for puncturing, all the sections perpendicular to the axle of the tubular body are circular ring-shaped. Because the external diameter of the syringe needle of the utility model is made into below 0.25 mm thin caliber, the bevel cutting is not required to be performed to the tip part of the syringe needle for puncturing, when the body is punctured, the damage to the tissue can be caused to the minimum limit, and the pain during the puncturing can be can reduced, the puncturing becomes easier.
Description
Technical field
This utility model relates to the liquid of medicinal liquid etc. is injected the entry needle that body uses intravital the time, relates in particular to for example superfine entry needle of tip diameter below the 0.25mm degree.
Background technology
Generally, the external diameter thickness of entry needle when the 2.0mm degree, just belongs to thinner at 0.3mm, use during insulin self-injection and what use during the anesthesia of tooth section all is to be entry needle more than the 0.2mm degree at external diameter.Pain on injection is relevant with the thickness of entry needle, it is generally acknowledged that thin more pain just can alleviate more.Particularly the pin that uses during self-injection is run business into particular one its external diameter, just can relax the uneasy and frightened of patient.But, on the one hand the diameter of entry needle is done to such an extent that too carefully will produce the problem of intensity in addition, and thin entry needle must cause its internal diameter also to diminish, when injecting in the health, can increase the obstacle of liquid flow to medicinal liquid, when injection, just need bigger pressure for medicinal liquid is extruded.
The Japan Patent spy opens the 2004-41391 communique and shows following method: the tabular stainless steel material that cuts is rolled into circle, and making profile is the columnar method of most advanced and sophisticated thin shape.In addition, the tabular stainless steel material is rolled into cylindrical shape, and interconnection the end, simultaneously, cut into the shape that profile is most advanced and sophisticated thin shape being rolled into columnar stainless steel material.
But, above-mentioned prior art, all be to make cylindrical shape from flat stainless steel material is rolled into circle, to the end face of the volume circle butt joint method of welding etc. mutually, therefore all need the processing that engages, in any case thereby all can produce and unevenly cause flowing of liquid not smooth at the seam crossing at this junction surface.
In addition, make the thin bore pipes of metal such as stainless steel material, carry out stretch process by thick bore metal steel pipe and handle, make it bore and become and attenuate also for well-known, still, to the metal steel pipe carry out such stretch process after, inwall can produce trickle gauffer, if inwall is not carried out attrition process, guarantee that the unimpeded of liquid flows difficult, therefore, use draws the produced entry needle of refreshing method that the structural defective of inner wall shape is also arranged.And, when implementing such stretch process processing, in the process of making, must use machine oil, when being applied to entry needle again, the sufficient ungrease treatment of necessary process, manufacturing process is also very loaded down with trivial details.
So prior art generally can not be accomplished entry needle below the 0.25mm at present, even there are its inwall junction of thinner entry needle faults of construction such as trickle gauffer uneven or inwall all to be difficult to avoid.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of columnar superfine entry needle will be provided, the fold that does not have the uneven and inwall of joint, can guarantee that the unimpeded of liquid flows, and can cause to Min. the damage organized, alleviate the pain when piercing through greatly.
All is hollow tubular body from base end part up to the point that is used to pierce through for solving the problems of the technologies described above entry needle of the present utility model, and the external diameter of the point that is used to pierce through is below 0.25mm.
Till the tip surface from described base end part to the described point that is used to pierce through, the cross section perpendicular with the axis of described tubular body can all be toroidal.
At the section that comprises described entry needle axis, compared with from the described needle point end that is used to pierce through until the lateral region surface (tapering part) of described pin base end part with respect to taper angle that axis became, the regional outer surface at described point place can form greatlyyer with respect to the taper angle that axis became, thereby at the circular cutting edge of the most advanced and sophisticated formation of entry needle.
The external diameter of the point that is used to pierce through is preferably below 0.12mm.
Superfine entry needle of the present utility model has only the electroplating technology of employing to make, and need not the joining process resemble the prior art, influences the unimpeded of liquid so can not produce rough inwall and flows, and also more smooth being more conducive to of outer wall punctured simultaneously; Same superfine entry needle inwall of the present utility model does not have the gauffer that stretches and make and produce yet; In addition, so the entry needle of prior art is because the diameter of point all must be done inclined-plane cutting processing greatly, and entry needle of the present utility model is made at 0.25mm even the thin bore below the 0.10mm because of external diameter, so the point that is used to puncture can cut without the inclined-plane, like this till the tip surface of the point that is used to pierce through, the cross section perpendicular with axis all is toroidal, meaning promptly, the point that is used to pierce through, be the rotation symmetric figure with respect to axis, when piercing through health, can cause to Min. damage tissue, can alleviate the pain when piercing through, and can make and pierce through the more easy of change.
In addition at the section that comprises described entry needle axis, compared with from the described needle point end that is used to pierce through until the lateral region surface (tapering part) of described pin base end part with respect to taper angle that axis became, the regional outer surface at needle point end place with respect to the taper angle that axis became form bigger the time, thereby, then more help puncturing, reducing damage to tissue at the circular cutting edge of the most advanced and sophisticated formation of entry needle.
Description of drawings
Fig. 1 is the flow chart with the manufacturing process of superfine entry needle of the present utility model;
Fig. 2 is the sectional drawing of entry needle with the shape instance of base material;
To be entry needle be installed in sketch map on the substrate holder with base material to Fig. 3;
Fig. 4 is when electroforming is handled, and entry needle adheres to the sketch map of electroforming metal with plating on the base material;
The structural representation that Fig. 5 is superfine entry needle body when entry needle is separated with base material;
Fig. 6 is the sectional drawing of the superfine entry needle shape instance that manufactures;
Fig. 7 is entry needle relevant with this utility model example sketch map when being installed to the needle guard base portion.
Among the figure: 1. base material 2. substrate holders 3. slide blocks
3a. button claw 4. rack bodies 5. insertion sections
6. electroforming device 6A, 6B, 6C. entry needle
7. 8. solution (sulfanilic acid electrolyte) of guard shield (pallet, resinite)
10. electrotyping bath 11.Ni anode 12. base material base portions
13. 14. base material tips, base material tapering, 15. pin base end parts
16. pin tapering portion 17. needle point ends, 20. entry needle finished products
22. needle guard base portion
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and exemplary embodiments.
The superfine entry needle of this utility model has only by electroplating technology and just can complete, and Fig. 1 shows this manufacturing process flow diagram.At first, make the base material (S1) that entry needle is used.
About the processing technology of this base material 1, produce the entry needle that uses as the mould of entry needle inner wall shape exactly with base material 1.Material is to use the conductive material of rustless steel (SUS) etc. or non-conducting material (through materials such as the plastics of conductive processing and nylon), and outer surface carried out the bright and clean milled processed of minute surface.At least a portion of profile part has the entry needle base material 1 of tapered shape, and one example shape is illustrated in Fig. 2 (a)～(e), never only limits to this example certainly, does not have the probability that is bar-shaped form of tapering also to have fully.And, entry needle in Fig. 2 (a)～(c) expression is to have done the inclined-plane cutting at the point 17 of entry needle with base material 1, be corresponding to the represented shape that has blade tip of Fig. 6 (g), in addition, with base material 1 shape that does not have blade tip corresponding to the represented point of Fig. 6 (h) at the entry needle of Fig. 2 (d)～(f) expression.
Have again,, having under the form of tapering, for example as the example of entry needle with the outside dimension of base material 1, getting base portion 12 (particle size) is Φ 0.13, gets tip 14 (thin footpath) and is Φ 0.09～0.11, on the other hand, do not having for example, to get Φ 0.125～0.129 under the bar-shaped form of tapering fully.In addition, as the length of base material 1, for example, it is 5mm that base portion 12 (diameter does not have the length of the part that changes) is got length, and 14 length total is taken as 20mm to the tip in tapering 13.
Then, on substrate holder, install entry needle base material (S2).
About the operation of this mounting bracket, as shown in Figure 3, entry needle is installed on the substrate holder 2 that connects negative electrode with base material 1.The conductive material that this substrate holder 2 is pyrite and rustless steel etc. is made, for example just as the object of the represented shape of Fig. 3.Anticipate promptly, the substrate holder 2 that Fig. 3 is represented is constituted by the insertion portion 5 of entry needle with base material 1 by intercalation at its front end.In addition,, splicing and both be covered with the outer surface of this rack body 4 in the outer surface part of this rack body 4, simultaneously again when being necessary, the plastic slide block 3 that can slidably reciprocate with respect to this rack body 4.
In the operation of this mounting bracket, need make entry needle keep being inserted in the state of 5 li of the insertion portions of substrate holder 2 with the base portion 12 of base material 1.In addition, if the inner wall section that insertion portion 5 is had is made with the Magnetitum material, just can install the entry needle of rustless steel (SUS) system with base material 1 with a shake-up mode.Moreover, and the like, can also be designed to replace the bayonet type mounting structure of said method.
Then, handle, make the electroforming metal plating be attached to entry needle and use on the base material 1 (S3) according to electroforming.
This electroforming treatment process is, represent as Fig. 4 (a), inject sulfanilic acid nickel metallic solution (sulfanilic acid electrolyte) 8 in electrotyping bath 10 the insides, in this solution, the entry needle base material 1 that is installed on the substrate holder 2, and to use the anode 11 of electroforming metal nickel material (Ni-Au, Ni-Ti's etc. and the other materials that may be used) (actually be that the metal material of Ni etc. is surrounded by the network structure of material systems such as Ti and constitutes.Below, be referred to as the Ni anode) soak into wherein.At this moment, substrate holder 2 same negative electrodes, 11 of Ni anode part connects respectively with anode.And entry needle is covered by plastic pallet 7 with the tip of base material 1, is for preventing that entry needle from adhering to electroforming metal with the tip portion of base material 1.
Fig. 4 (b) (c) is the shape of expression pallet 7.Shape at the represented pallet 7a of Fig. 4 (b), be for the entry needle of the corresponding diagram 6 (g) of being furnished with blade in making (afterwards, to implement the tip ramp cutting), so that can be comparatively suitable when making 6A, on the other hand, in the shape of the represented pallet 7b of Fig. 4 (c), be at the entry needle of making the corresponding diagram 6 (h) be not furnished with blade, so that can be comparatively suitable when making 6B.Yet, entry needle is placed on 8 li of solution with base material 1 carries out when mobile, it will be not too suitable using the method for pallet 7.
At this moment, shown in Fig. 4 (d), preferably use before electroforming is handled, the spherical resin body 7c that is made by insulator is spliced at the tip of entry needle with base material 1, it is covered the method for again this resinite 7c being removed after electroforming is handled.Yet above-mentioned resinite 7c also is not limited to spheroid form certainly.
After setting such state for, just load between above-mentioned negative electrode and the anode fixed voltage.Thus, electric current that will be fixed to some extent in electroforming solution 8 flow (generally having stable control electric current), can plate and enclose the Ni metal around at entry needle with base material 1, pass through after fixed time, will can be made into by having the entry needle body that certain thickness electroforming device 6 is constituted.And preferably can make entry needle serves as that axle is rotated with certain speed with base material 1 with its centrage.Because such rotary manipulation has been arranged, can reach and electroplate isostatic effect.
Moreover, the time that above-mentioned electroforming is handled and the voltage (electric current) of above-mentioned loading, both can be pre-set according to former data etc., can also be by constantly monitoring the thickness of entry needle with the electroforming metal that is being adhered to around the base material 1, the adjustment of doing according to institute's measured value again.
Then, from electrotyping bath 10, take out, the electroforming device 6 of entry needle body is peeled away (S4) from entry needle with base material 1 the substrate holder 2 of entry needle with base material 1 is installed.
Fig. 5 is expression, the appearance of the electroforming device 6 of entry needle body when entry needle is peeled away with base material 1.Meaning promptly makes the plastics system slide block 3 that can slide arbitrarily with respect to this support 4, be inserted in base material 1 under the state of insertion portion 5 at the maintenance entry needle, towards entry needle with the tip direction of base material 1 slide (state that slides into (b) from the state of (a)).The point of slide block 3 has, and can touch the standing shape button claw 3a of entry needle with base material 1 surperficial degree, and this button claw 3a also has the elasticity that is depended on base material 1 surface direction by entry needle.Therefore, be accompanied by Slipper 3 when entry needle slides with the tip direction of base material 1, this button claw 3a can be close to entry needle and carry out slippage with the surface of base material 1.Therefore, against the effect of this button claw 3a, electroforming device 6 is just separated with base material 1 from entry needle, and can obtain the entry needle body.If use this kind method, electroforming device 6 is separated and will be become very easy with base material 1 from entry needle.And owing to just can carry out separation to electroforming device 6 to entry needle with any damage of base material 1 not causing, this entry needle usefulness base material 1 can be by the utilization of repeated multiple times, thereby reaches the effect that reduces cost.
In addition, different with above-mentioned method, can also after being removed from substrate holder 2 with base material 1, again electroforming device 6 be peeled off with base material 1 from this entry needle entry needle.
Next, in order to make the entry needle of requirement, and whether need the above-mentioned operation S3 of repeatable operation, the judgement of S4 (S5).
Fig. 6 (a)～(f) expression, the sectional view of thus obtained all forms about the entry needle shape.No matter can clearly learn from these sectional views, be which kind of form among Fig. 6 (a)～(f), at least the point 17 that is used to pierce through to the intermediate portion of base end part 15 to have one section outside wall surface at least be taper together with inner wall surface thereof.
At this, shown in Fig. 6 (a)～(c), for the entry needle body of the state that is separated in above-mentioned the 4th step (S4) lining, because its tip surface has been done inclined-plane cutting and obtained, in any case its point all can have blade tip formation.
At this moment, outside dimension with entry needle 6A is an example, for example, the external diameter of pin base end part 15 (particle size) is Φ 0.23, and internal diameter is Φ 0.20, the external diameter of needle point end 17 (thin footpath) is Φ 0.12, internal diameter is Φ 0.10, so in any case, as long as according to the shape of entry needle with base material 1, just can be made into various internal diameters, the product of external diameter.
In addition on the one hand, shown in Fig. 6 (d)～(f), do not carry out the inclined-plane cutting, so can make in the needle point end 17 that is used to pierce through, till the tip surface of the needle point end 17 that is used to pierce through, the perpendicular cross section of the axis of all and body all is circular product.
In addition, comprising the section of this axis, compared with from the aforementioned needle point end that is used to pierce through 17 until the lateral region surface (tapering part) of aforementioned pin base end part 15 with respect to taper angle that axis became, region surface at these point 17 places will form greatlyyer with respect to the taper angle that axis became, meaning promptly forms the shape (with reference to Fig. 6 (e)) of multistage tapering, thereby at the circular cutting edge of the most advanced and sophisticated formation of entry needle.
At this moment, be example with the outside dimension of entry needle 6B, for example, the external diameter of pin base end part 15 (particle size) is Φ 0.23, and internal diameter is Φ 0.20, and the external diameter in needle point end 17 (thin footpath) is Φ 0.10, and internal diameter is Φ 0.08.
Thus, because the needle point end that is used to pierce through is not made into the blade tip shape, just can be systemic damage is reduced to Min..In addition, because the external diameter of the needle point end that is used to pierce through is below the 0.25mm, and the following degree of 0.10mm preferably, so the needle point end that is used to pierce through need not to make the blade tip shape, also can accomplish both to have reduced penetration resistance, can make liquid flow unimpeded again.
In addition, Fig. 6 (g) is expression, and the represented stravismus sketch map that has blade tip entry needle 6A in Fig. 6 (a)～(c), Fig. 6 (h) are expressions, corresponding to the stravismus sketch map that does not have the entry needle 6B of blade tip in the represented entry needle among Fig. 6 (d)～(f).
In addition, Fig. 7 is that expression the entry needle 6C relevant with this example is installed to needle guard base portion 22 and the sketch map of the entry needle finished product 20 made.The mounting means of relevant with this example certainly entry needle also never only limits to this.
In addition, will be not limited only to the form of above-mentioned enforcement, also can be varied to other similar forms about entry needle of the present utility model.
Claims (4)
1. superfine entry needle, this entry needle all is hollow tubular body from base end part up to the point that is used to pierce through, and it is characterized in that: the external diameter of the point that is used to pierce through is below the 0.25mm.
2. superfine entry needle according to claim 1 is characterized in that: till from described base end part to the tip surface that is used for the point that pierces through, the perpendicular cross section of the axis of itself and described tubular body all is toroidal.
3. superfine entry needle according to claim 2, it is characterized in that: at the section that comprises described entry needle axis, compared with from the described needle point end that is used to pierce through until the lateral region surface of described pin base end part with respect to taper angle that axis became, the regional outer surface at described point place will form greatlyyer with respect to the taper angle that axis became, thereby at the circular cutting edge of the most advanced and sophisticated formation of entry needle.
4. according to claim 1,2 or 3 described superfine entry needles, it is characterized in that: the external diameter of the described point that is used to pierce through is below the 0.12mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006097508 | 2006-03-31 | ||
| JP2006097508 | 2006-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200998476Y true CN200998476Y (en) | 2008-01-02 |
Family
ID=38770274
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101092059A Pending CN101045173A (en) | 2006-03-31 | 2006-08-01 | Method of manufacturing injection needle and injection needle |
| CNU2006201235255U Expired - Fee Related CN200998476Y (en) | 2006-03-31 | 2006-08-01 | Ultra-thin injection needle |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101092059A Pending CN101045173A (en) | 2006-03-31 | 2006-08-01 | Method of manufacturing injection needle and injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN101045173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007244A (en) * | 2019-05-29 | 2020-12-01 | 秀逸开发株式会社 | Needle injection assembly for insulin injection |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105682704B (en) * | 2013-10-31 | 2019-09-17 | 株式会社Ｅｆｒ | The manufacturing method of needle |
| CN104740731A (en) * | 2013-12-27 | 2015-07-01 | 苏州和林精密科技有限公司 | Seamless painless syringe needle and manufacturing method thereof |
| WO2016156024A1 (en) * | 2015-04-01 | 2016-10-06 | Novo Nordisk A/S | Electroformed needle cannula |
| BR112019007525B1 (en) * | 2016-10-17 | 2023-04-11 | Medical Components, Inc | NEEDLE AND CATHETER CANNULA CONNECTION METHOD AND APPLIANCE |
| CN117339063A (en) * | 2023-12-06 | 2024-01-05 | 杭州迪视医疗生物科技有限公司 | Micro needle tube and manufacturing method of micro injection needle |
-
2006
- 2006-08-01 CN CNA2006101092059A patent/CN101045173A/en active Pending
- 2006-08-01 CN CNU2006201235255U patent/CN200998476Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007244A (en) * | 2019-05-29 | 2020-12-01 | 秀逸开发株式会社 | Needle injection assembly for insulin injection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101045173A (en) | 2007-10-03 |
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| 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: 20080102 Termination date: 20100801 |