CN102871670A - Medical metal needle - Google Patents
Medical metal needle Download PDFInfo
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- CN102871670A CN102871670A CN2012103900830A CN201210390083A CN102871670A CN 102871670 A CN102871670 A CN 102871670A CN 2012103900830 A CN2012103900830 A CN 2012103900830A CN 201210390083 A CN201210390083 A CN 201210390083A CN 102871670 A CN102871670 A CN 102871670A
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- 239000002184 metal Substances 0.000 title claims abstract description 102
- 239000004033 plastic Substances 0.000 claims abstract description 65
- 229920003023 plastic Polymers 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims abstract description 45
- 239000011347 resin Substances 0.000 claims abstract description 39
- 229920005989 resin Polymers 0.000 claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 28
- 238000000465 moulding Methods 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 21
- 230000007306 turnover Effects 0.000 claims description 20
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- 241001504664 Crossocheilus latius Species 0.000 description 4
- 238000001802 infusion Methods 0.000 description 4
- 238000010253 intravenous injection Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004531 microgranule Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010241 blood sampling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
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Abstract
The invention provides a metal needle for many puncture operations in medical work. For solving the problem of chip drop in the puncture process of the medical metal needle, the rough surface of a part formed by using a grinding process in a sharp needle tip is coated with plastic or resin. Because the rough part produced by grinding on the surface of the metal needle is completely covered, a large quantity of cutting processes for a punctured object are eliminated during puncture of the metal needle, and the chip drop of the punctured object due to the cutting is greatly reduced.
Description
Technical field
The invention belongs to a kind of medical apparatus and instruments, the medical metal syringe needle that particularly many puncture procedures can use in curative activity.
Background technology
Puncture is an operation of often carrying out in curative activity.For example: when using packing to contain the injection of rubber stopper or rubber sheet gasket, when carrying out muscle or intravenous injection, when using the vacuum tube blood sampling, all need to puncture.The pin major part of using that punctures at present is metal needle.Metal needle all is to consist of by hard straight needle tubing, sharp needle point with for the pin hole of fluid turnover, and needle tubing and needle point connect together, and the needle point that connects together of needle tubing be at needle tubing an end, only have one, or at the two ends of needle tubing, respectively have one; Pin hole for fluid turnover is opened on needle point, and what needle point was wedge shape is called the inclined-plane pin, perhaps opens near on the needle tubing sidewall of needle point, and needle point is the side-hole needle that is called of taper.In the process of using metal needle to puncture, it is found that being punctured object has chip and come off, be that the chip what reason causes being punctured object comes off?
The process majority that the last molding of the needle point that metal needle is sharp is adopted is grinding.Abrasive material in the grinding tool is abrasive particle hard, that corner angle are arranged.The hard corner angle of abrasive particle dig a groove and reject original that a part of stock in groove at the surface of processed stock plough, and the accumulation of a large amount of this processes is exactly the essence of this technique of grinding.The needle point that the medical metal syringe needle is sharp is placed on microscopically and watches, and is ground finished part, and the surface all is the depth, groove different in size and uneven, indenting ridge beam, and is very coarse.Puncture with such metal needle, when coarse metal surface is close to when being punctured object and down sliding, a large amount of small working angles will occur, and therefore are punctured object and chip occur and come off and just be inevitable, and this is to cause being punctured the main cause that the object chip comes off.
After being pierced object and breaking, its section is coarse, when syringe needle continues to push ahead, the needle tubing sidewall produces to grind to section and rubs with the hands, when the part is stressed when surpassing the tearing strength of puncture object, also can cause chip to come off, this is just the same with the principle that rubber that the student uses rubs less and less.Grind to rub being punctured of causing with the hands the object chip come off what, and grind the big or small positive correlation of stranding power size and contact area.And resistance is all very little when using metal needle to puncture, thus needle tubing that the stone roller of puncture object is rubbed with the hands power is just very little.Metal needle is all very very thin, so the surface area of needle tubing is also very little.So puncture with metal needle, to compare with cutting factors to grind to rub with the hands and cause amount that puncture object chip comes off seldom, this is to cause puncturing the secondary cause that the object chip comes off.
The rubber stopper of injection being packed with metal needle punctures, and the rubber scraps that comes off can enter injection, and this particulate matter might enter human body together with injection, becomes the hidden danger of infringement patient health and safety.When carrying out muscle or intravenous injection, what use all is the inclined-plane pin, this metal needle is a meniscate sharp cutting edge in the bottom of its pin hole, the little chip that causes except small cutting after entering human body comes off, sometimes also can cause the larger fragment of organizing to come off, may stop up syringe needle, artery-clogging.When using the vacuum tube blood sampling, because the chip that the puncture plug comes off much all is the fine particle of several microns of diameters, in the project of blood test, in the time need to carrying out differential counting to the visible component of different sizes, might the interference test result.
How to reduce this all negative effect in piercing process of medical metal syringe needle?
" disposable infusion set is prevented microgranule dual pathways needle for inserting bottle " that No. 92225733.7, Chinese patent application, metal needle for bottle inserting needle of transfusion system, the problem that when transfusion, causes the plug bits to come off, a solution has been proposed: make with the hard plastic injection molding molding, the matrix composition that has taper inserting needle head and inlet channel, infusion channel to be integrated, air inlet and inlet opening and puncture plug angular separation are greater than 90 °.This plastic bottle-plugging needle outer surface does not have like that coarse place of metal needle grinding part, there is not the meniscate sharp cutting edge in metal needle pin hole bottom, inclined-plane yet, therefore wish this plastic bottle-plugging needle when rubber stopper is punctured, the plug bits come off and will be avoided.But owing to be subjected to hardness and the strong mechanical constraints of plastics, the diameter of plastic bottle-plugging needle is all much larger than metal needle, when therefore being advanced to ideal position with plastic bottle-plugging needle puncture rubber stopper and it, use very large strength.After rubber stopper was pierced and breaks, its section was coarse, and when plastic bottle-plugging needle advanced in the bottle, needle body produced violent stone roller to the plug section and rubs with the hands, rubbed that strength is large, contact area is large with the hands owing to grind, and must cause a large amount of plugs bits to come off.Bibliographical information is arranged, puncture with the plug of plastic bottle-plugging needle to infusion bottle, can cause a bottle inner liquid medicine particulate matter content increase at double.So replace metal needle with the plastics pin, also bad to the effect that the minimizing puncture causes crumb of bottle stopper to come off.And this plastic bottle-plugging needle all is unsuitable for using in other occasions of using metal needle to puncture except available to the rubber stopper puncture of infusion solutions packing.
" the disposable pull tubular type side-hole dosing needle " that No. 200320107112, Chinese patent application, it is to have increased a plastic bushing in the outside of metal needle.When repeatedly the rubber stopper of the injection container of dosing punctures for the first time to needs, sleeve pipe is stayed on the rubber stopper, only need that again syringe needle is stretched into sleeve pipe during dosing and get final product, needn't puncture to rubber stopper again, so think that it does not produce the microgranule that bottle stopper comes off.The metal needle of this medicine feeding needle is side-hole needle, and needle point is taper, its final molding technique or grinding, and its surperficial degree of roughness there is no and alleviates.Therefore to the puncture first time of rubber stopper, still can make bottle stopper produce the microgranule that comes off, and when it stays sleeve pipe on first bottle of injection, when again other bottle stopper being punctured again, with the common metal side-hole needle than just again without any superiority.
" a kind of novel disposable needle for inserting bottle " that No. 201110308361.9, Chinese patent application carried out meticulous design and change to the needlepoint form of metal needle, and expectation produces the problem of rubber particle easily when solving the seal cover of metal needle puncture infusion bottle.But the needle point after changing, molding still needs to finish with grinding process, the degree of roughness of these working positions under microcosmic still, these working positions also will streak from the rubber that breaks in the process that bottle stopper is punctured, so the coming off or keep away unavoidable of rubber scraps.
In sum, puncture with metal needle, will inevitably cause the chip that is punctured object to come off, and then bring all negative effects to curative activity, this problem has caused the extensive concern of pharmaceuticals industry, and existing many effort and explorations in this respect.But, there is no at present a scheme that can solve smoothly above-mentioned great number of issues and be disclosed.
Summary of the invention
The objective of the invention is to be provided in the process of the numerous punctures of curative activity the medical metal syringe needle that can both allow the chip of puncture object come off and significantly reduce.
In order to achieve the above object, the solution that the present invention proposes is: a kind of medical metal syringe needle, consist of by hard straight needle tubing, sharp needle point with for the pin hole of fluid turnover, needle tubing and needle point connect together, and the needle point that connects together of needle tubing be at needle tubing an end, only have one; Pin hole for the fluid turnover is opened on needle point, and needle point is wedge shape, it is characterized in that: its sharp needle point all applies with plastics or resin with the ring-type sharp side of the part inclination of grinding process molding.What method no matter plastics or resin-coating in the metal surface, adopted, and coating has by liquid state and becomes solid-state process.As long as the material that is used for applying all hides coated part, because the surface tension of liquid has the effect that reduces its surface area as far as possible, so its surface is smooth certainly when final curing.Because the metal needle surface is all hidden because of the part that grinding becomes coarse, when puncturing, a large amount of small working angles just can not occur, and the chip that causes because of this cutting comes off and will be avoided.
To the purpose that metal needle applies, be to hide that part that makes metal needle become coarse because of grinding with plastics or resin, coating layer thickness maximum only 10---20 microns, as long as cover those trickle projections.Therefore for the metal needle that comes calculated diameter with millimeter, through plastics or resin-coating, its thickness changes and is little, the resistance that metal needle is punctured obviously increases, rub with the hands still very light to the stone roller of puncture object, contact area is still very little, comes off because grind rubbing the puncture object chip that causes with the hands that compare with not coated metal needle can showed increased.
This inclined-plane metal needle of being crossed by plastics or resin-coating provided by the present invention, in making up a prescription, infuse, take a blood sample, carry out numerous operations that need to puncture such as muscle or intravenous injection, can use, and because needle point is ground the position of molding without the possibility of carrying out a large amount of small cuttings, the main cause that the object chip that causes puncturing comes off is eliminated, can significantly reduce so the chip of various puncture objects comes off.
Only surperficial with the part of grinding process molding to the needle point of inclined-plane metal needle, apply with plastics or resin, in the joint portion of needle point and needle tubing, at the boundary of grinding-shaping and non-grinding-shaping, the border that just has an applicator exists.In the process that punctures, applying the border might become the impetus that destroys coating.As a further improvement on the present invention, the part outer surface that also can needle tubing and the needle point of inclined-plane metal needle be ground and the edge of pin hole, these may contact the part that is punctured object, also apply with plastics or resin.Puncture with such metal needle, the syringe needle position that the puncture object touches all is level and smooth complete coating, bump the applicator border of destroying the coating impetus less than becoming, coating still can be remained intact in use procedure repeatedly, and the chip that can be elimination puncture object comes off more reliable assurance is provided.Because the edge of pin hole is also by plastics or resin-coating, pin hole bottom crescent cutting blade is not sharp, so the probability that causes the larger fragment of puncture object to come off also can diminish.
Only needle point and some position of needle tubing of inclined-plane metal needle are applied with plastics or resin, accurate location and corresponding identification, control sequence must be arranged on processing arrangement, high to the production equipment requirement, the production process more complicated.As a further improvement on the present invention, beyond the ring-type sharp side that also needle point can be tilted, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.Can reduce like this chip that is punctured object and come off, can guarantee again that coating remains intact and saved the measurement of locating in the arrangement of production technology in use procedure repeatedly, identification and control sequence, production equipment is all relative simple with production process.
In order to achieve the above object, another solution that the present invention proposes is: a kind of medical metal syringe needle, consist of by hard straight needle tubing, sharp needle point with for the pin hole of fluid turnover, needle tubing and needle point connect together, and the needle point that connects together of needle tubing be at needle tubing two ends, respectively have one; On two needle points the pin hole that passes in and out for fluid is arranged, needle point all is wedge shape, it is characterized in that: its sharp needle point all applies with plastics or resin with the ring-type sharp side of the part inclination of grinding process molding.Because the metal needle surface is all hidden because of the part that grinding becomes coarse, when puncturing, a large amount of small working angles just can not occur, and the chip that causes because of this cutting comes off and will be avoided.
Change and little through its thickness of plastics or resin-coating, rub the puncture object chip that causes with the hands and come off that compare with not coated metal needle can showed increased because grinding.
This metal needle provided by the present invention needs simultaneously vein and vacuum tube both direction to be punctured the inclined-plane metal needle of special-purpose crosspointer point for adapting to vacuum blood collection.Take a blood sample with metal needle with this vacuum blood collection of being crossed by plastics or resin-coating, because needle point is ground the position of molding without the possibility of carrying out a large amount of small cuttings, the main cause that the object chip that causes puncturing comes off is eliminated, so the chip of the tissue that is punctured and vacuum test tube plug comes off and can significantly reduce.，
As the further improvement of this programme, the part outer surface that vacuum blood collection is not ground with needle tubing and the needle point of crosspointer point inclined-plane metal needle and the edge of pin hole, these may contact the part that is punctured object, also apply with plastics or resin.Puncture with such metal needle, the syringe needle position that the puncture object touches all is level and smooth complete coating, bump the applicator border of destroying the coating impetus less than becoming, coating still can be remained intact in use procedure repeatedly, and the chip that can be elimination puncture object comes off more reliable assurance is provided.Because the edge of pin hole is also by plastics or resin-coating, pin hole bottom crescent cutting blade is not sharp, so the probability that causes the larger fragment of puncture object to come off also can diminish.
Only vacuum blood collection needle point and some position of needle tubing with the sharp inclined-plane of crosspointer metal needle applied with plastics or resin, accurate location and corresponding identification, control sequence must be arranged on processing arrangement, production equipment is required height, production process more complicated.As the further improvement of this programme, also can be with vacuum blood collection with crosspointer point inclined-plane metal needle, beyond the ring-type sharp side that its needle point tilts, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.Can reduce like this chip that is punctured object and come off, can guarantee again that coating remains intact and saved the measurement of locating in the arrangement of production technology in use procedure repeatedly, identification and control sequence, production equipment is all relative simple with production process.
In order to achieve the above object, another solution that the present invention proposes is: a kind of medical metal syringe needle, consist of by hard straight needle tubing, sharp needle point with for the pin hole of fluid turnover, needle tubing and needle point connect together, and the needle point that connects together of needle tubing be at needle tubing an end, only have one; Open on the close needle tubing sidewall of needle point for the pin hole of fluid turnover, needle point is tapered, it is characterized in that: its sharp needle point all applies with plastics or resin with the conical surface of grinding process molding.Because this side opening metal needle surface is all hidden because of the part that grinding becomes coarse, when puncturing, a large amount of small working angles just can not occur, and the chip that causes because of this cutting comes off and will be avoided.
Through plastics or resin-coating, the thickness of side opening metal needle changes and is little, rubs the puncture object chip that causes with the hands and comes off that compare with not coated metal needle can showed increased because grinding.
This side opening metal needle of being crossed by plastics or resin-coating provided by the present invention, make up a prescription, infuse, etc. can use in the operation that need to puncture to rubber stopper or the rubber sheet gasket of the various packings of injection.Because needle point is ground the position of molding without the possibility of carrying out a large amount of small cuttings, the main cause that the object chip that causes puncturing comes off is eliminated, so the chip of the rubber stopper of the various packings of injection that are punctured or rubber sheet gasket comes off and can significantly reduce.
As the present invention program's further improvement, the needle tubing outer surface of contralateral exposure metal needle and the edge of pin hole, these may contact the part that is punctured object, also apply with plastics or resin.Puncture with such side opening metal needle, the syringe needle position that the puncture object touches all is level and smooth complete coating, bump the applicator border of destroying the coating impetus less than becoming, coating still can be remained intact in use procedure repeatedly, and the chip that can be elimination puncture object comes off more reliable assurance is provided.
Needle point and some position of needle tubing of contralateral exposure metal needle apply with plastics or resin, and accurate location and corresponding identification, control sequence must be arranged on processing arrangement, production equipment is required high, the production process more complicated.As the present invention program's further improvement, also can with part on its needle point of side opening metal needle with beyond the conical surface of grinding process molding, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.Can reduce like this chip that is punctured object and come off, can guarantee again that coating remains intact and saved the measurement of locating in the arrangement of production technology in use procedure repeatedly, identification and control sequence, production equipment is all relative simple with production process.
The related medical metal syringe needle of above-mentioned three solutions can be applicable to various puncture procedures in the curative activity widely, and can both allow the chip of puncture object come off significantly to reduce.
Description of drawings
Fig. 1 is the sketch map of the medical inclined-plane of the present invention metal needle.
Fig. 2 is the sketch map that vacuum blood collection of the present invention is used crosspointer point inclined-plane metal needle.
Fig. 3 is the sketch map of the medical side opening metal needle of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
Medical inclined-plane metal needle shown in Figure 1 is a specific embodiment provided by the invention.It is to consist of by hard straight needle tubing 1, sharp needle point 2 with for the pin hole 3 of fluid turnover, and needle tubing 1 and needle point 2 connect together, and the needle point 2 that connects together of needle tubing 1 be at needle tubing 1 an end, only have one; Pin hole 3 for the fluid turnover is opened on needle point 2, and needle point 2 is wedge shape, it is characterized in that: the ring-type sharp side that the part of its sharp needle point 2 usefulness grinding process molding tilts all applies with plastics or resin.The 4th, the needle point grinding-shaping partly applies the micro-sketch map of the uneven contour line of front surface; The 5th, the needle point grinding-shaping partly applies the rear surface contour line sliding micro-sketch map that flattened.Because metal needle 2 surfaces are all hidden because of the part that grinding becomes coarse, when puncturing, a large amount of small working angles just can not occur, and the chip that causes because of this cutting comes off and will be avoided.
To the purpose that the inclined-plane metal needle applies, be to hide that part that makes syringe needle become coarse because of grinding with plastics or resin, coating layer thickness maximum only 10---20 microns, as long as cover those trickle projections.Therefore for the metal needle that comes calculated diameter with millimeter, through plastics or resin-coating, inclined-plane metal needle thickness changes and is little, the resistance that syringe needle is punctured obviously increases, rub with the hands still very light to the stone roller of puncture object, contact area is still very little, comes off because grind rubbing the puncture object chip that causes with the hands that compare with not coated inclined-plane metal needle can showed increased.
This inclined-plane metal needle of being crossed by plastics or resin-coating provided by the present invention, in making up a prescription, infuse, carry out numerous operations that need to puncture such as muscle or intravenous injection, can use, and because needle point 2 is ground the position of molding without the possibility of carrying out a large amount of small cuttings, the main cause that the object chip that causes puncturing comes off is eliminated, can significantly reduce so the chip of various puncture objects comes off.
Only to the part surface of needle point 2 usefulness the grinding process molding of inclined-plane metal needle, apply with plastics or resin, with the joint portion of needle tubing 1, at the boundary of grinding-shaping and non-grinding-shaping, just have the border existence of an applicator at needle point 2.In the process that punctures, applying the border might become the impetus that destroys coating.As the further improvement of present embodiment, the part outer surface that also can needle tubing 1 and the needle point 2 of inclined-plane metal needle be ground and the edge of pin hole 3, these may contact the part that is punctured object, also apply with plastics or resin.Puncture with such inclined-plane metal needle, the syringe needle position that the puncture object might touch all is level and smooth complete coating, bump the applicator border of destroying the coating impetus less than becoming, coating still can be remained intact in use procedure repeatedly, and the chip that can be elimination puncture object comes off more reliable assurance is provided.Because the edge of pin hole 3 is also by plastics or resin-coating, pin hole 3 bottom crescent cutting blades are not sharp, so the probability that causes the larger fragment of puncture object to come off also can diminish.
Only needle point 2 and needle tubing 1 some position of inclined-plane metal needle are applied with plastics or resin, accurate location and corresponding identification, control sequence must be arranged on processing arrangement, high to the production equipment requirement, the production process more complicated.As the further improvement of present embodiment, beyond the ring-type sharp side that also metal needle its needle point in inclined-plane can be tilted, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.Can reduce like this chip that is punctured object and come off, can guarantee again that coating remains intact and saved the measurement of locating in the arrangement of production technology in use procedure repeatedly, identification and control sequence, production equipment is all relative simple with production process.
Vacuum blood collection shown in Figure 2 is another specific embodiment provided by the invention with crosspointer point inclined-plane metal needle, and it is to need simultaneously special-purpose metal syringe needle that vein and vacuum tube both direction are punctured for adapting to vacuum blood collection.It is made of hard straight needle tubing 6, two sharp needle points 7,9 and two pin holes 8,10 for the fluid turnover, and needle tubing 6 and needle point 7,9 connect together, and the needle point 7, the 9th that connects together of needle tubing 6, at the two ends of needle tubing 6, respectively have one; Pin hole L8 for the fluid turnover opens on needle point 7, needle point 7 is wedge shape, opens on needle point 9 for the pin hole 10 of fluid turnover, and needle point 9 also is wedge shape, it is characterized in that: the ring-type sharp side that the part of its sharp needle point 7 and 9 usefulness grinding process molding tilts all applies with plastics or resin.The 11st, needle point 7 and 9 grinding-shapings partly apply the micro-sketch map of the uneven contour line of front surface; The 12nd, needle point 7 and 9 grinding-shapings partly apply the rear surface contour line sliding micro-sketch map that flattened.Use this vacuum blood collection of being crossed by plastics or resin-coating provided by the present invention to take a blood sample with crosspointer point inclined-plane metal needle, because needle point 7 and 9 is ground the position of molding without the possibility of carrying out a large amount of small cuttings, the main cause that the object chip that causes puncturing comes off is eliminated, so the chip of the tissue that is punctured and vacuum test tube plug comes off and can significantly reduce.
Further improvement as present embodiment, the part outer surface that also can vacuum blood collection be ground with needle tubing 6 and the needle point 7,9 of crosspointer point inclined-plane metal needle, and the edge of pin hole 8 and 10, these may contact the part that is punctured object, also apply with plastics or resin.Puncture with such metal needle, the syringe needle position that the puncture object might touch all is level and smooth complete coating, bump the applicator border of destroying the coating impetus less than becoming, coating still can be remained intact in use procedure repeatedly, and the chip that can be elimination puncture object comes off more reliable assurance is provided.Because the edge of pin hole 8 and 10 is also by plastics or resin-coating, pin hole 8 and 10 bottom crescent cutting blades are not sharp, so the probability that causes the larger fragment of puncture object to come off also can diminish.
Only to vacuum blood collection with the needle point 7 of the sharp inclined-plane of crosspointer metal needle and 9 and needle tubing 6 some position apply with plastics or resin, accurate location and corresponding identification, control sequence must be arranged on processing arrangement, production equipment is required height, production process more complicated.As the further improvement of present embodiment, beyond the ring-type sharp side that also vacuum blood collection can be tilted with crosspointer point inclined-plane its needle point of metal needle 7 and 9, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.Can reduce like this chip that is punctured object and come off, can guarantee again that coating remains intact and saved the measurement of locating in the arrangement of production technology in use procedure repeatedly, identification and control sequence, production equipment is all relative simple with production process.
Medical side opening metal needle shown in Figure 3 is another specific embodiment provided by the invention.It is to consist of by hard straight needle tubing 13, sharp needle point 14 with for the pin hole 15 of fluid turnover, and needle tubing 13 and needle point 14 connect together, and the needle point 14 that connects together of needle tubing 13 be at needle tubing 13 an end, only have one; Open on close needle tubing 13 sidewalls of needle point 14 for the pin hole 15 of fluid turnover, needle point 14 is tapered, it is characterized in that: the conical surface of its sharp needle point 14 usefulness grinding process molding all applies with plastics or resin.The 16th, the needle point grinding-shaping partly applies the micro-sketch map of the uneven contour line of front surface; The 17th, the needle point grinding-shaping partly applies the rear surface contour line sliding micro-sketch map that flattened.Because the coarse part that needle point 14 surfaces are ground is all hidden, when puncturing, a large amount of small working angles just can not occur, and the chip that causes because of this cutting comes off and will be avoided.
This side opening metal needle of being crossed by plastics or resin-coating provided by the present invention, make up a prescription, infuse, etc. can use in the operation that need to puncture to rubber stopper or the rubber sheet gasket of the various packings of injection.Because needle point 14 is ground the position of molding without the possibility of carrying out a large amount of small cuttings, the main cause that the object chip that causes puncturing comes off is eliminated, so the chip of the rubber stopper of the various packings of injection that are punctured or rubber sheet gasket comes off and can significantly reduce.
The part surface of the needle point 14 usefulness grinding process molding of contralateral exposure metal needle applies with plastics or resin, and with the joint portion of needle tubing 13, at the boundary of grinding-shaping and non-grinding-shaping, the border that just has an applicator exists at needle point 14.In the process that punctures, applying the border might become the impetus that destroys coating.As the further improvement of present embodiment, the outer surface that also can needle tubing 13 be ground and the edge of pin hole 15, these may contact the part that is punctured object, also apply with plastics or resin.Puncture with such side opening metal needle, the syringe needle position that the puncture object touches all is level and smooth complete coating, bump the applicator border of destroying the coating impetus less than becoming, coating still can be remained intact in use procedure repeatedly, and the chip that can be elimination puncture object comes off more reliable assurance is provided.
Claims (9)
1. medical metal syringe needle consists of by hard straight needle tubing, sharp needle point with for the pin hole of fluid turnover, and needle tubing and needle point connect together, and the needle point that connects together of needle tubing be at needle tubing an end, only have one; Pin hole for the fluid turnover is opened on needle point, and needle point is wedge shape, it is characterized in that: use the ring-type sharp side of the part inclination of grinding process molding on the needle point, apply with plastics or resin.
2. medical metal syringe needle according to claim 1, it is characterized in that: the part outer surface that needle tubing and needle point are not ground and the edge of pin hole, these contacts are punctured the part of object, also apply with plastics or resin.
3. medical metal syringe needle according to claim 1 is characterized in that: beyond the ring-type sharp side that its needle point tilts, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.
4. medical metal syringe needle consists of by hard straight needle tubing, sharp needle point with for the pin hole of fluid turnover, and needle tubing and needle point connect together, and the needle point that connects together of needle tubing be at needle tubing two ends, respectively have one; Pin hole for the fluid turnover is arranged on two needle points, and needle point all is wedge shape, it is characterized in that: the ring-type sharp side that tilts with the part of grinding process molding on the needle point all applies with plastics or resin.
5. medical metal syringe needle according to claim 4, it is characterized in that: the part outer surface that needle tubing and needle point are not ground and the edge of pin hole, these contacts are punctured the part of object, also apply with plastics or resin.
6. medical metal syringe needle according to claim 4 is characterized in that: beyond the ring-type sharp side that its needle point tilts, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.
7. medical metal syringe needle consists of by hard straight needle tubing, sharp needle point with for the pin hole of fluid turnover, and needle tubing and needle point connect together, and the needle point that connects together of needle tubing be at needle tubing an end, only have one; Open on the close needle tubing sidewall of needle point for the pin hole of fluid turnover, needle point is tapered, it is characterized in that: its needle point all applies with plastics or resin with the conical surface of grinding process molding.
8. medical metal syringe needle according to claim 7, it is characterized in that: the outer surface that needle tubing is not ground and the edge of pin hole, these contacts are punctured the part of object, also apply with plastics or resin.
9. medical metal syringe needle according to claim 7 is characterized in that: on its needle point part with beyond the conical surface of grinding process molding, the whole inside and outside surfaces of syringe needle, also all apply with plastics or resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103900830A CN102871670A (en) | 2012-10-16 | 2012-10-16 | Medical metal needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103900830A CN102871670A (en) | 2012-10-16 | 2012-10-16 | Medical metal needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102871670A true CN102871670A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103900830A Pending CN102871670A (en) | 2012-10-16 | 2012-10-16 | Medical metal needle |
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| Country | Link |
|---|---|
| CN (1) | CN102871670A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107073616A (en) * | 2014-11-07 | 2017-08-18 | 睿纳有限责任公司 | Method and apparatus for manufacturing syringe needle |
| CN110834405A (en) * | 2018-08-17 | 2020-02-25 | 伊森医药科技(上海)有限公司 | Manufacturing process of plastic injection needle and product thereof |
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|---|---|---|---|---|
| JP2005095571A (en) * | 2003-08-28 | 2005-04-14 | Hanako Medical Kk | Improved medical syringe needle |
| CN2863133Y (en) * | 2006-01-23 | 2007-01-31 | 吕蕾 | Disposable medical connected double-needle |
| CN102470220A (en) * | 2009-09-30 | 2012-05-23 | 泰尔茂株式会社 | Injection needle assembly and drug injection device |
| CN102695534A (en) * | 2009-11-09 | 2012-09-26 | 伊西康公司 | Surgical needle coatings and methods |
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- 2012-10-16 CN CN2012103900830A patent/CN102871670A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005095571A (en) * | 2003-08-28 | 2005-04-14 | Hanako Medical Kk | Improved medical syringe needle |
| CN2863133Y (en) * | 2006-01-23 | 2007-01-31 | 吕蕾 | Disposable medical connected double-needle |
| CN102470220A (en) * | 2009-09-30 | 2012-05-23 | 泰尔茂株式会社 | Injection needle assembly and drug injection device |
| CN102695534A (en) * | 2009-11-09 | 2012-09-26 | 伊西康公司 | Surgical needle coatings and methods |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107073616A (en) * | 2014-11-07 | 2017-08-18 | 睿纳有限责任公司 | Method and apparatus for manufacturing syringe needle |
| CN110834405A (en) * | 2018-08-17 | 2020-02-25 | 伊森医药科技(上海)有限公司 | Manufacturing process of plastic injection needle and product thereof |
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Application publication date: 20130116 |