JP6318585B2 - Medical needle - Google Patents
Medical needle Download PDFInfo
- Publication number
- JP6318585B2 JP6318585B2 JP2013247977A JP2013247977A JP6318585B2 JP 6318585 B2 JP6318585 B2 JP 6318585B2 JP 2013247977 A JP2013247977 A JP 2013247977A JP 2013247977 A JP2013247977 A JP 2013247977A JP 6318585 B2 JP6318585 B2 JP 6318585B2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- tip
- needle tube
- base
- tube
- 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.)
- Active
Links
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 4
- 238000000034 method Methods 0.000 description 24
- 230000002093 peripheral effect Effects 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 11
- 210000004204 blood vessel Anatomy 0.000 description 7
- 239000003822 epoxy resin Substances 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 229930182556 Polyacetal Natural products 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
Description
本発明は、金属性の円筒部材から成る針管と、前記針管を固定する針基とを備える医療用針に関する。 The present invention relates to a medical needle comprising a needle tube made of a metallic cylindrical member and a needle base for fixing the needle tube.
注射針や採血針等の医療用針は、血管に穿刺して血管に薬液を注入したり、また血管から血液を採取したりするためのものである。医療用針として、例えば一般針や留置針と呼ばれるものがあり、一般針は、針管と針基とを備えている。針管は、金属製の円筒部材から成り、先端部に鋭利な針先を有している。このように構成されている針管の基端部は、針先を針基から突出させた状態で針基に挿通されて固定されている。 Medical needles such as injection needles and blood collection needles are used to puncture blood vessels and inject chemicals into blood vessels, or to collect blood from blood vessels. Examples of medical needles include those called general needles and indwelling needles, and general needles are provided with a needle tube and a needle base. The needle tube is made of a metal cylindrical member and has a sharp needle tip at the tip. The proximal end portion of the needle tube configured in this manner is inserted and fixed to the needle base with the needle tip protruding from the needle base.
このように構成されている医療用針は、針管の針先を穿刺する際に針基から針先が取れないようにするために針管と針基とを強固に固定する必要があり、その固定方法として例えば特許文献１に記載されるような固定方法がある。特許文献１に記載の注射針では、ハブ（針基）に針カニューレ（針管）を挿入し、ハブと針カニューレとをエポキシ樹脂又は接着剤で接着して固定している。 The medical needle configured in this way needs to firmly fix the needle tube and the needle base so that the needle tip cannot be removed from the needle base when puncturing the needle tip of the needle tube. For example, there is a fixing method as described in Patent Document 1. In the injection needle described in Patent Document 1, a needle cannula (needle tube) is inserted into a hub (needle base), and the hub and the needle cannula are bonded and fixed with an epoxy resin or an adhesive.
特許文献１の固定方法で使用されるエポキシ樹脂及び接着剤は、時間が経過するとともに劣化する。劣化することでエポキシ樹脂及び接着剤の接着強度が低下し、製造から数年経過するとハブから針カニューレが脱落することがある。そのため、特許文献１に記載の固定方法で針管と針基とを固定している医療用針は、予め使用期限が決められており、その期限内に使用する必要がある。しかし、製造された医療用針が在庫として残って使用期限内に使用することができない場合があり、そのような場合は医療用針を廃棄しなければならない。 The epoxy resin and adhesive used in the fixing method of Patent Document 1 deteriorate with time. Deterioration reduces the adhesive strength of the epoxy resin and the adhesive, and the needle cannula may fall off the hub after several years from manufacture. For this reason, the expiration date for use of the medical needle in which the needle tube and the needle base are fixed by the fixing method described in Patent Document 1 is determined in advance, and must be used within the expiration date. However, there are cases where the manufactured medical needle remains in stock and cannot be used within the expiration date, and in such a case, the medical needle must be discarded.
そこで本発明は、従来のものより使用期限が長い医療用針を提供することを目的としている。 Therefore, an object of the present invention is to provide a medical needle that has a longer expiration date than the conventional one.
本発明の医療用針は、金属性の円筒部材から成り、先端部に鋭利な針先を有し且つ前記先端部と異なる部位に先端部の外径より大径な拡径部を有する針管と、基端側から先端側に向かって縮径する狭窄部分を有し、前記針先が先端から外方に突出するように前記針管が軸線方向に挿通され、前記狭窄部に前記拡径部を係合させて前記針管が前記先端から前記軸線方向に抜けないようになっている針基と、前記軸線方向に相対変位しないように前記針基に固定されて、前記針管の針先が前記針基内に後退しないように前記針管の動きを規制する規制部材とを備えるものである。 The medical needle of the present invention is composed of a metallic cylindrical member, has a sharp needle tip at the tip portion, and a needle tube having an enlarged diameter portion larger in diameter than the outer diameter of the tip portion at a site different from the tip portion. The needle tube is inserted in the axial direction so that the needle tip protrudes outward from the distal end side, and the enlarged diameter portion is provided in the narrowed portion. A needle base that is engaged so that the needle tube does not come off from the tip end in the axial direction and a needle base that is fixed to the needle base so as not to be relatively displaced in the axial direction, and the needle tip of the needle tube is the needle And a regulating member that regulates the movement of the needle tube so as not to retreat into the base.
本発明に従えば、拡径部及び狭窄部分によって針管が針基の先端から抜けないようになっており、また規制部材によって針基内に針管が後退する動きを規制するようになっている。それ故、接着剤等を使用することなく針管を針基に固定することができるので、医療用針の使用期限を従来のものより長くすることができる。 According to the present invention, the needle tube is prevented from coming off from the tip of the needle base by the enlarged diameter portion and the narrowed portion, and the movement of the needle tube retreating into the needle base is regulated by the regulating member. Therefore, since the needle tube can be fixed to the needle base without using an adhesive or the like, the expiration date of the medical needle can be made longer than that of the conventional one.
本発明の医療用針は、金属性の円筒部材から成り、先端部に鋭利な針先を有し、前記先端部と異なる部位の外周面に粗面が形成されている針管と、前記針先が先端から外方に突出するように前記針管が軸線方向に挿通されている針基と、樹脂材料で成型されており、前記粗面と前記針基との間に設けられ、前記軸線方向に相対変位不能に前記針基に固定されて前記針管の針先が前記針基内で後退しないように前記針管の動きを規制する規制部材とを備えるものである。 The medical needle of the present invention is composed of a metallic cylindrical member, has a sharp needle tip at a tip portion, and a needle tube having a rough surface formed on an outer peripheral surface of a portion different from the tip portion, and the needle tip The needle tube is inserted in the axial direction so as to protrude outward from the tip, and is molded of a resin material, provided between the rough surface and the needle base, in the axial direction And a restricting member that is fixed to the needle base so as not to be relatively displaceable and restricts the movement of the needle tube so that the needle tip of the needle tube does not retreat within the needle base.
本発明に従えば、針基に固定された規制部材が針管の粗面と協働して針管の動きを規制して、針管を針基に固定している。それ故、接着剤等を使用することなく針管を針基に固定することができるので、医療用針の使用期限を従来のものより長くすることができる。 According to the present invention, the restricting member fixed to the needle base cooperates with the rough surface of the needle tube to restrict the movement of the needle tube, thereby fixing the needle tube to the needle base. Therefore, since the needle tube can be fixed to the needle base without using an adhesive or the like, the expiration date of the medical needle can be made longer than that of the conventional one.
本件発明の医療用針の製造方法は、金属性の円筒部材から成り、先端部に鋭利な針先を有し且つ先端部と異なる部位に先端部の外径より大径な拡径部を有する針管を、円筒状の針基の先端から前記針管の前記針先が外方に突出するように軸線方向に前記針管を前記針基に挿通する挿通工程と、基端側から先端側に向かって縮径する前記針基の狭窄部に前記針管の拡径部を係合させて前記針管が前記針基の先端から前記軸線方向に抜けないようにする係合工程と、前記針管の針先が前記針基内に後退しないように前記針管の動きを規制する規制部材を前記針基内に固定する規制部材固定工程とを有する方法である。 The method for manufacturing a medical needle according to the present invention comprises a metallic cylindrical member, has a sharp needle tip at the tip, and has an enlarged portion larger in diameter than the outer diameter of the tip at a portion different from the tip. An insertion step of inserting the needle tube into the needle base in an axial direction so that the needle tip of the needle tube protrudes outward from the distal end of the cylindrical needle base, and from the proximal end side toward the distal end side An engaging step for engaging the enlarged diameter portion of the needle tube with the narrowed portion of the needle base to be reduced in diameter so that the needle tube does not come off from the tip of the needle base in the axial direction; and a needle tip of the needle tube A restricting member fixing step of fixing a restricting member for restricting movement of the needle tube in the needle base so as not to retract into the needle base.
本発明に従えば、拡径部及び狭窄部分によって針管が針基の先端から抜けないようになっており、また規制部材を配置することで針基内に針管が後退する動きを規制させることができる。それ故、接着剤等を使用することなく針管を針基に固定することができるので、使用期限が従来のものより長い医療用針を製造することができる。 According to the present invention, the enlarged diameter portion and the narrowed portion prevent the needle tube from coming off from the tip of the needle base, and the movement of the needle tube retreating in the needle base can be regulated by arranging a regulating member. it can. Therefore, since the needle tube can be fixed to the needle base without using an adhesive or the like, it is possible to manufacture a medical needle having a longer use period than the conventional one.
本発明によれば、使用期限が従来のものより長い医療用針を製造することができる。 According to the present invention, it is possible to manufacture a medical needle whose expiration date is longer than the conventional one.
以下、本発明に係る第１及び第２実施形態の医療用針１，１Ａについて前述の図面を参照して説明する。なお、以下の説明で用いる方向の概念は、説明する上で便宜上使用するものであって、発明の構成の向き等をその方向に限定するものではない。また、以下に説明する医療用針１，１Ａは、本発明の一実施形態に過ぎない。従って、本発明は実施の形態に限定されず、発明の趣旨を逸脱しない範囲で追加、削除、変更が可能である。 Hereinafter, the medical needles 1 and 1A according to the first and second embodiments of the present invention will be described with reference to the aforementioned drawings. In addition, the concept of the direction used in the following description is used for convenience in description, and does not limit the direction of the configuration of the invention in that direction. Moreover, the medical needles 1 and 1A described below are only one embodiment of the present invention. Therefore, the present invention is not limited to the embodiments, and additions, deletions, and changes can be made without departing from the spirit of the invention.
［第１実施形態］
医療用針１は、血管に穿刺して血管に薬液を注入したり、また血管から血液を採取したりするための針である。図１に示す医療用針１は、いわゆる一般針であり、針管２と、針基３と、規制ピン４とを有している。なお、本実施形態では、医療用針１を一般針に適用した場合について説明しているが、一般針に限定されず、留置針や両頭針等の針に適用してもよい。以下では、針管２、針基３、及び規制ピン４の具体的な構成について説明する。なお、針管２、針基３、及び規制ピン４は、医療用針１の軸線Ｌ１に沿って形成されているものとする。
[First Embodiment]
The medical needle 1 is a needle for puncturing a blood vessel and injecting a chemical solution into the blood vessel or collecting blood from the blood vessel. A medical needle 1 shown in FIG. 1 is a so-called general needle, and has a needle tube 2, a needle base 3, and a regulation pin 4. In this embodiment, the case where the medical needle 1 is applied to a general needle is described. However, the present invention is not limited to the general needle, and may be applied to a needle such as an indwelling needle or a double-ended needle. Below, the concrete structure of the needle tube 2, the needle base 3, and the control pin 4 is demonstrated. Note that the needle tube 2, the needle base 3, and the restriction pin 4 are formed along the axis L <b> 1 of the medical needle 1.
図２及び３に示すように、針管２は、金属材料、例えばステンレス鋼から成る長尺の中空円筒状に形成されており、その中を薬液又は血液を流すことができるようになっている。針管２は、その先端部に鋭利な針先１１を有し、基端部に拡径部１２を有している。針先１１は、血管等に穿刺できるようになっており、拡径部１２は、針管２の針先１１及び中間部１３より大径に形成されている。拡径部１２は、テーパ部分１２ａと円筒部分１２ｂとを有しており、テーパ部分１２ａと円筒部分１２ｂは、中間部１３側から針管２の基端に向かってその順序で並んでいる。テーパ部分１２ａは、中間部１３から針管２の基端（即ち、円筒部分１２ｂ側）に向かって拡径するテーパ形状に形成されている、即ち針管の先端側に向かって先細りのテーパ状に形成されている。テーパ部分１２ａの基端には、円筒部分１２ｂが一体的に形成されており、円筒部分１２ｂは、針管２の軸線に沿って（即ち、軸線Ｌ１に沿って）テーパ部分１２ａから針管２の基端まで延在している。円筒部分１２ｂは、その基端側部分に開口１２ｃを有する大略円筒状を形成されており、針管２の針先１１及び中間部１３より大径に形成されている。このように構成されている針管２は、針基３に挿入されて固定されている。 As shown in FIGS. 2 and 3, the needle tube 2 is formed in a long hollow cylindrical shape made of a metal material, for example, stainless steel, through which a drug solution or blood can flow. The needle tube 2 has a sharp needle tip 11 at its distal end and a diameter-enlarged portion 12 at its proximal end. The needle tip 11 can puncture a blood vessel or the like, and the enlarged diameter portion 12 is formed to have a larger diameter than the needle tip 11 and the intermediate portion 13 of the needle tube 2. The enlarged diameter portion 12 has a tapered portion 12a and a cylindrical portion 12b, and the tapered portion 12a and the cylindrical portion 12b are arranged in that order from the intermediate portion 13 side toward the proximal end of the needle tube 2. The tapered portion 12a is formed in a tapered shape that increases in diameter from the intermediate portion 13 toward the proximal end of the needle tube 2 (that is, the cylindrical portion 12b side), that is, formed in a tapered shape that tapers toward the distal end side of the needle tube. Has been. A cylindrical portion 12b is integrally formed at the proximal end of the tapered portion 12a. The cylindrical portion 12b is formed along the axis of the needle tube 2 (that is, along the axis L1) from the tapered portion 12a to the base of the needle tube 2. It extends to the end. The cylindrical portion 12 b is formed in a substantially cylindrical shape having an opening 12 c on the base end side portion thereof, and has a larger diameter than the needle tip 11 and the intermediate portion 13 of the needle tube 2. The needle tube 2 configured in this way is inserted into the needle base 3 and fixed.
針基３は、合成樹脂材料、好ましくは高密度ポリエチレン材、より好ましくはポリアセタール系樹脂から成り、大略円筒形状になっている。針基３は、３段階で縮径しており、針管保持部２１、ピン保持部２２、及び円筒部２３の３つの部分によって構成されている。これら３つの部分２１〜２３は、大略円筒状になっており、針管保持部２１は針基３の先端側に位置している。円筒部２３は針基３の基端側に位置しており、ピン保持部２２は、針管保持部２１と円筒部２３との間に介在している。 The needle base 3 is made of a synthetic resin material, preferably a high density polyethylene material, more preferably a polyacetal resin, and has a substantially cylindrical shape. The needle base 3 is reduced in diameter in three stages, and is composed of three parts, a needle tube holding part 21, a pin holding part 22, and a cylindrical part 23. These three portions 21 to 23 are substantially cylindrical, and the needle tube holding portion 21 is located on the distal end side of the needle base 3. The cylindrical portion 23 is located on the proximal end side of the needle base 3, and the pin holding portion 22 is interposed between the needle tube holding portion 21 and the cylindrical portion 23.
針管保持部２１は、所定の厚みの大略円筒状に形成されており、その中間部分に狭窄部分２４を有している。狭窄部分２４は、針管保持部２１の先端（即ち、針基３の先端）に向かうにつれて先細りのテーパ形状になっている。この狭窄部分２４によって、針管保持部２１の先端部分（即ち、狭窄部分２４より先端側の部分）２１ａの内径ｒ１１は、針管保持部２１の基端部分（即ち、狭窄部分２４より基端側の部分）２１ｂの内径ｒ１２より小径に形成されている。このように形成される針管保持部２１の内周面の形状は、針管２の拡径部１２の外周面の形状に略一致するように形成されている。本実施形態では、針管保持部２１の先端側の内径ｒ１１は、針管２の中間部１３の外径ｒ２１に略一致しており、針管保持部２１の基端側の内径ｒ１２は、拡径部１２の円筒部分１２ｂの外径ｒ２２に略一致している。また、針管保持部２１における狭窄部分２４の内周面の形状は、拡径部１２におけるテーパ部分１２ａの外周面の形状と略一致する、即ち互いのテーパ角α１，βが略一致するように形成されている。 The needle tube holding portion 21 is formed in a substantially cylindrical shape having a predetermined thickness, and has a narrowed portion 24 at an intermediate portion thereof. The narrowed portion 24 has a tapered shape that tapers toward the tip of the needle tube holding portion 21 (that is, the tip of the needle base 3). By this narrowed portion 24, the inner diameter r 11 of the distal end portion of the needle tube holding portion 21 (that is, the portion on the distal side of the narrowed portion 24) 21 a is the proximal end portion of the needle tube holding portion 21 (that is, the proximal end side from the narrowed portion 24. has a smaller diameter than the portion) 21b inner diameter r 12 of the. The shape of the inner peripheral surface of the needle tube holding portion 21 formed in this way is formed so as to substantially match the shape of the outer peripheral surface of the enlarged diameter portion 12 of the needle tube 2. In the present embodiment, the inner diameter r 11 on the distal end side of the needle tube holding portion 21 substantially matches the outer diameter r 21 of the intermediate portion 13 of the needle tube 2, and the inner diameter r 12 on the proximal end side of the needle tube holding portion 21 is It is substantially equal to the outer diameter r 22 of the cylindrical portion 12b of the enlarged diameter portion 12. In addition, the shape of the inner peripheral surface of the narrowed portion 24 in the needle tube holding portion 21 is substantially the same as the shape of the outer peripheral surface of the tapered portion 12a in the enlarged diameter portion 12, that is, the taper angles α 1 and β are substantially the same. Is formed.
このように形成されている針管保持部２１には、針管２が挿通されており、針管２の針先１１及び中間部１３は、針管保持部２１の先端部分から外方に突出している。針管２の拡径部１２は、針管保持部２１内に配置され、拡径部１２のテーパ部分１２ａが狭窄部分２４に嵌合し、円筒部分１２ｂが針管保持部２１の基端部分２１ｂに嵌合している。このように嵌合させることで針管２が針基３に固定されている。また、狭窄部分２４は、テーパ形状になっているので、針基３から引き抜く方向への針管２の動きを規制するようになっている。このように針管保持部２１は、針管２を固定しその動きを規制するようになっている。この針管保持部２１の基端部分２１ｂには、ピン保持部２２が一体的に形成されている。 The needle tube 2 is inserted into the needle tube holding portion 21 formed in this way, and the needle tip 11 and the intermediate portion 13 of the needle tube 2 protrude outward from the tip portion of the needle tube holding portion 21. The enlarged diameter portion 12 of the needle tube 2 is disposed in the needle tube holding portion 21, the tapered portion 12 a of the enlarged diameter portion 12 is fitted to the narrowed portion 24, and the cylindrical portion 12 b is fitted to the proximal end portion 21 b of the needle tube holding portion 21. Match. The needle tube 2 is fixed to the needle base 3 by fitting in this way. Further, since the narrowed portion 24 has a tapered shape, the movement of the needle tube 2 in the direction of being pulled out from the needle base 3 is restricted. In this way, the needle tube holding part 21 fixes the needle tube 2 and restricts its movement. A pin holding portion 22 is formed integrally with the proximal end portion 21 b of the needle tube holding portion 21.
ピン保持部２２は、先端部分及び基端部分に第１係合部分２５及び第２係合部分２６を有している。第１係合部分２５及び第２係合部分２６は、針管保持部２１の方（即ち、針基３の先端）に向かうにつれて先細りのテーパ形状になっている。これにより、第１係合部分２５及び第２係合部分２６の間にある中間部分２７の内径ｒ３１は、ピン保持部２２の先端の内径ｒ３２より大径、且つピン保持部２２の基端の内径ｒ３３より小径に形成されている。このように形成されているピン保持部２２には、規制ピン４が挿入されている。 The pin holding portion 22 has a first engagement portion 25 and a second engagement portion 26 at the distal end portion and the proximal end portion. The first engagement portion 25 and the second engagement portion 26 have a tapered shape that tapers toward the needle tube holding portion 21 (that is, the distal end of the needle base 3). Thus, the inner diameter r 31 of the intermediate portion 27 between the first engagement portion 25 and the second engagement portion 26 is larger than the inner diameter r 32 of the tip end of the pin holding portion 22, and the base of the pin holding portion 22. The inner diameter r 33 of the end is smaller than the inner diameter. The regulation pin 4 is inserted into the pin holding portion 22 formed in this way.
規制部材である規制ピン４は、合成樹脂材料、好ましくは高密度ポリエチレン材、より好ましくはポリアセタール系樹脂から成り、所定の厚みの大略円筒状に形成されている。規制ピン４は、先端側テーパ部３１、中間テーパ部３２、及び基端側テーパ部３３の３つのテーパを有している。また、規制ピン４には、先端側テーパ部３１と中間テーパ部３２との間に第１円筒部３４が介在し、中間テーパ部３２と基端側テーパ部３３との間に第２円筒部３５が介在している。 The regulating pin 4 as a regulating member is made of a synthetic resin material, preferably a high density polyethylene material, more preferably a polyacetal resin, and is formed in a substantially cylindrical shape with a predetermined thickness. The restriction pin 4 has three tapers, that is, a distal end side taper portion 31, an intermediate taper portion 32, and a proximal end side taper portion 33. Further, the regulation pin 4 has a first cylindrical portion 34 interposed between the distal side taper portion 31 and the intermediate taper portion 32, and a second cylindrical portion between the intermediate taper portion 32 and the proximal end side taper portion 33. 35 is interposed.
先端側テーパ部３１は、規制ピン４の先端に向かうにつれて先細りのテーパ形状になっており、その外周面の形状は、拡径部１２のテーパ部分１２ａの内周面の形状に合せて形成されている。さらに詳細に説明すると、先端側テーパ部３１の基端側の外径ｒ４１は、拡径部１２の円筒部分１２ｂの内径ｒ２３に略一致しており、先端側テーパ部３１のテーパ角γ１は、拡径部１２のテーパ部分１２ａのテーパ角βと略一致している。また、先端側テーパ部３１の長さは、拡径部１２のテーパ部分１２ａの内周面より短くなっている。このように形成されている先端側テーパ部３１は、その先端から拡径部１２内に挿入されており、拡径部１２のテーパ部分１２ａに嵌め込まれている。この先端側テーパ部３１の基端には、第１円筒部３４が一体的に形成されている。 The tip side taper portion 31 has a tapered shape that tapers toward the tip of the regulation pin 4, and the outer peripheral surface thereof is formed in accordance with the shape of the inner peripheral surface of the tapered portion 12 a of the enlarged diameter portion 12. ing. More specifically, the outer diameter r 41 on the proximal end side of the distal end side taper portion 31 substantially coincides with the inner diameter r 23 of the cylindrical portion 12 b of the enlarged diameter portion 12, and the taper angle γ of the distal end side taper portion 31. 1 substantially coincides with the taper angle β of the taper portion 12 a of the enlarged diameter portion 12. Further, the length of the tip side taper portion 31 is shorter than the inner peripheral surface of the taper portion 12a of the enlarged diameter portion 12. The tip-side tapered portion 31 formed in this way is inserted into the enlarged diameter portion 12 from the distal end, and is fitted into the tapered portion 12 a of the enlarged diameter portion 12. A first cylindrical portion 34 is integrally formed at the proximal end of the distal end side tapered portion 31.
第１円筒部３４は、先端側テーパ部３１の基端から規制ピン４の基端に向かって延在している。第１円筒部３４の外周面の形状は、拡径部１２の円筒部分１２ｂの内周面の形状と略一致している。本実施形態では、第１円筒部３４の外径ｒ４２が円筒部分１２ｂの内径ｒ２３と略一致している。このように形成されている第１円筒部３４は、円筒部分１２ｂに嵌まり込んでおり、先端側テーパ部３１と共に拡径部１２の変形、具体的に径方向の収縮変形を防ぐようになっている。 The first cylindrical portion 34 extends from the proximal end of the distal end side tapered portion 31 toward the proximal end of the restriction pin 4. The shape of the outer peripheral surface of the first cylindrical portion 34 substantially matches the shape of the inner peripheral surface of the cylindrical portion 12 b of the enlarged diameter portion 12. In this embodiment, the outer diameter r 42 of the first cylindrical portion 34 substantially coincides with the inner diameter r 23 of the cylindrical portion 12b. The first cylindrical portion 34 formed in this way is fitted into the cylindrical portion 12b, and prevents deformation of the diameter-expanded portion 12 and specifically contraction deformation in the radial direction together with the tip side taper portion 31. ing.
また、拡径部１２のテーパ部分１２ａがテーパ形状になっているので、先端側テーパ部３１及び第１円筒部３４を針管２の先端の方に押し込むと、先端側テーパ部３１が拡径部１２のテーパ部分１２ａによって挟持されるようになっている。それ故、規制ピン４は、それを針管２の拡径部１２に押し込むことで針管２に装着し固定できるようになっている。従って、針基３に挿入された針管２の中間部１３を引張ると、規制ピン４も針管２を介して引っ張られるようになっている。また、第１円筒部３４は、拡径部１２の円筒部分１２ｂより長尺に形成されており、第１円筒部３４の基端部分が拡径部１２から突き出ている。この第１円筒部３４の基端部分には、中間テーパ部３２が一体的に形成されている。 Further, since the tapered portion 12a of the enlarged diameter portion 12 has a tapered shape, when the distal end side tapered portion 31 and the first cylindrical portion 34 are pushed toward the distal end of the needle tube 2, the distal end side tapered portion 31 becomes the enlarged diameter portion. 12 taper portions 12a are sandwiched. Therefore, the regulation pin 4 can be mounted and fixed to the needle tube 2 by pushing it into the enlarged diameter portion 12 of the needle tube 2. Therefore, when the intermediate portion 13 of the needle tube 2 inserted into the needle base 3 is pulled, the restriction pin 4 is also pulled through the needle tube 2. The first cylindrical portion 34 is formed longer than the cylindrical portion 12 b of the enlarged diameter portion 12, and the proximal end portion of the first cylindrical portion 34 protrudes from the enlarged diameter portion 12. An intermediate taper portion 32 is integrally formed at the base end portion of the first cylindrical portion 34.
被係合部分である中間テーパ部３２は、規制ピン４の基端に向かうにつれて拡径するテーパ形状になっており、その先端の外径ｒ４３（＝ｒ４２）が基端の外径ｒ４４より大径になっている。また、中間テーパ部３２の基端の外径ｒ４４は、ピン保持部２２における中間部分２７の内径ｒ３１と略一致し、第１中間テーパ部３２のテーパ角γ２は、ピン保持部２２における第１係合部分２５のテーパ角α２と略一致している。また、第１中間テーパ部３２の基端には、第２円筒部３５が一体的に形成されている。 The intermediate tapered portion 32 that is an engaged portion has a tapered shape that increases in diameter toward the proximal end of the restriction pin 4, and the outer diameter r 43 (= r 42 ) of the distal end thereof is the outer diameter r of the proximal end. The diameter is larger than 44 . Further, the outer diameter r 44 at the base end of the intermediate taper portion 32 substantially coincides with the inner diameter r 31 of the intermediate portion 27 in the pin holding portion 22, and the taper angle γ 2 of the first intermediate taper portion 32 is the pin holding portion 22. substantially coincides with the taper angle alpha 2 of the first engagement portion 25 in. A second cylindrical portion 35 is integrally formed at the base end of the first intermediate taper portion 32.
第２円筒部３５は、中間テーパ部３２の基端から規制ピン４の基端に向かって略同径で延在している。第２円筒部３５の外周面の形状は、ピン保持部２２の中間部分２７の内周面の形状に略一致している。本実施形態では、第２円筒部３５の外径ｒ４５が中間部分２７の内径ｒ３１と略一致している。この第２円筒部３５の基端には、基端側テーパ部３３が一体的に形成されている。被係合部分である基端側テーパ部３３は、規制ピン４の基端に向かうにつれて拡径するテーパ形状になっており、その外周面の形状がピン保持部２２の第２係合部分２６の内周面の形状と略一致している。本実施形態では、基端側テーパ部３３の先端の外径ｒ４６は、中間部分２７の内径ｒ３１と略一致しており、基端側テーパ部３３のテーパ角γ３は、第２係合部分２６のテーパ角α３と略一致している。 The second cylindrical portion 35 extends from the proximal end of the intermediate taper portion 32 toward the proximal end of the restriction pin 4 with substantially the same diameter. The shape of the outer peripheral surface of the second cylindrical portion 35 substantially matches the shape of the inner peripheral surface of the intermediate portion 27 of the pin holding portion 22. In the present embodiment, the outer diameter r 45 of the second cylindrical portion 35 substantially matches the inner diameter r 31 of the intermediate portion 27. A proximal end taper portion 33 is integrally formed at the proximal end of the second cylindrical portion 35. The proximal end side taper portion 33 that is an engaged portion has a tapered shape that increases in diameter toward the proximal end of the restriction pin 4, and the shape of the outer peripheral surface thereof is the second engagement portion 26 of the pin holding portion 22. This substantially matches the shape of the inner peripheral surface. In the present embodiment, the outer diameter r 46 at the distal end of the proximal end side taper portion 33 substantially matches the inner diameter r 31 of the intermediate portion 27, and the taper angle γ 3 of the proximal end side taper portion 33 is equal to the second relationship. substantially coincides with the taper angle alpha 3 merging portion 26.
このように形成されている中間テーパ部３２、第２円筒部３５及び基端側テーパ部３３は、ピン保持部２２内に嵌まり込んでおり、中間テーパ部３２が第１係合部分２５に嵌合し、基端側テーパ部３３が第２係合部分２６に嵌合している。第１及び第２係合部分２５，２６がテーパ状になっているので、針管２を介して規制ピン４が引っ張られると、中間テーパ部３２及び基端側テーパ部３３が第１及び第２係合部分２５，２６の先端側へと押し込まれる。これにより、中間テーパ部３２及び基端側テーパ部３３が第１及び第２係合部分２５，２６に夫々挟持されて、規制ピン４が針基３に固定される。このように固定された規制ピン４は、針管２の基端側に配置され、針基３の基端の方へと向かう針管２の動きを規制する。即ち、規制ピン４によって針管２が針基３内へと押し戻される動きが規制されるようになっている。このように規制ピン４は、ピン保持部２２に固定されて針管２の動きを規制している。また、ピン保持部２２には、その基端に円筒部２３が一体的に形成されている。 The intermediate taper portion 32, the second cylindrical portion 35, and the proximal end side taper portion 33 formed in this way are fitted in the pin holding portion 22, and the intermediate taper portion 32 is connected to the first engagement portion 25. The proximal end side taper portion 33 is fitted to the second engagement portion 26. Since the first and second engaging portions 25 and 26 are tapered, when the restriction pin 4 is pulled through the needle tube 2, the intermediate tapered portion 32 and the proximal end side tapered portion 33 are first and second. The engagement portions 25 and 26 are pushed into the distal end side. As a result, the intermediate taper portion 32 and the base end side taper portion 33 are sandwiched between the first and second engaging portions 25 and 26, respectively, and the restriction pin 4 is fixed to the needle base 3. The restriction pin 4 thus fixed is disposed on the proximal end side of the needle tube 2 and restricts the movement of the needle tube 2 toward the proximal end of the needle base 3. That is, the movement of the needle tube 2 being pushed back into the needle base 3 by the restriction pin 4 is restricted. In this way, the restriction pin 4 is fixed to the pin holding portion 22 and restricts the movement of the needle tube 2. Further, the pin holding portion 22 is integrally formed with a cylindrical portion 23 at the base end thereof.
円筒部２３は、ピン保持部２２の基端から円筒部２３の基端（即ち、針基３の基端）の方に向かうにつれて若干拡径するテーパ形状に形成されている。円筒部２３の基端の内径ｒ３４は、ピン保持部２２の基端の内径ｒ３３より大径に形成されており、針管２及び規制ピン４が挿入しやすくなっている。また、円筒部２３の基端、即ち針基３の基端には、フランジ２８が一体的に形成されている。フランジ２８は、針基３の基端から半径方向外方に突出しており、基端の周方向全周にわたって形成されている。 The cylindrical portion 23 is formed in a tapered shape that slightly increases in diameter from the proximal end of the pin holding portion 22 toward the proximal end of the cylindrical portion 23 (that is, the proximal end of the needle base 3). The inner diameter r 34 of the base end of the cylindrical part 23 is formed larger than the inner diameter r 33 of the base end of the pin holding part 22, and the needle tube 2 and the regulation pin 4 can be easily inserted. A flange 28 is integrally formed at the base end of the cylindrical portion 23, that is, at the base end of the needle base 3. The flange 28 protrudes radially outward from the proximal end of the needle base 3 and is formed over the entire circumference in the circumferential direction of the proximal end.
このように構成される医療用針１では、狭窄部分２４によって針管２を引き抜く動きが規制され、且つ規制ピン４によって針管２が押し戻される動きが規制されて固定されている。このように医療用針１では、狭窄部分２４及び規制ピン４によって針管２の動きを規制することによって針管２を針基３から機械的に抜けないようにすることができる。これにより、接着剤やエポキシ樹脂等が必要なくなり、医療用針１の使用期限を延ばすことができるようになっている。以下では、このように構成される医療用針１の製造方法について図４のフローチャートも参照しながら説明する。 In the medical needle 1 configured as described above, the movement of pulling out the needle tube 2 is restricted by the narrowed portion 24, and the movement of the needle tube 2 being pushed back by the restriction pin 4 is restricted and fixed. As described above, in the medical needle 1, the movement of the needle tube 2 is restricted by the narrowed portion 24 and the restriction pin 4, so that the needle tube 2 can be prevented from being mechanically removed from the needle base 3. Thereby, an adhesive agent, an epoxy resin, etc. become unnecessary, and the expiration date of use of the medical needle 1 can be extended. Below, the manufacturing method of the medical needle 1 comprised in this way is demonstrated, also referring the flowchart of FIG.
医療用針１の製造方法は、図４に示すように、装着工程、挿通工程、及び固定工程の３つの工程を有しており、これら３つの工程を経ることで医療用針１が製造される。医療用針１の製造方法では、まず装着工程が行われる。装着工程であるステップＳ１では、針管２に規制ピン４を装着する。具体的に説明すると、まず、規制ピン４を針管２の拡径部１２の開口１２ｃから挿入する。規制ピン４は、先端側テーパ部３１が拡径部１２のテーパ部分１２ａに嵌合するまで挿入され、嵌合された後も更に押し込む。これによって、先端側テーパ部３１が拡径部１２のテーパ部分１２ａに挟持され、挟持されることで針管２が規制ピン４に固定される、即ち装着される。このようにして装着されるとステップＳ２に移る。 As shown in FIG. 4, the manufacturing method of the medical needle 1 has three steps, that is, an attachment step, an insertion step, and a fixing step, and the medical needle 1 is manufactured through these three steps. The In the manufacturing method of the medical needle 1, an attachment process is first performed. In step S <b> 1, which is an attachment process, the restriction pin 4 is attached to the needle tube 2. More specifically, first, the restriction pin 4 is inserted from the opening 12c of the enlarged diameter portion 12 of the needle tube 2. The restriction pin 4 is inserted until the tip side taper portion 31 is fitted into the taper portion 12a of the enlarged diameter portion 12, and is further pushed in after being fitted. Thereby, the distal end side taper portion 31 is sandwiched between the tapered portions 12a of the enlarged diameter portion 12, and the needle tube 2 is fixed, that is, attached to the regulation pin 4 by being sandwiched. If it is thus mounted, the process proceeds to step S2.
挿通工程であるステップＳ２では、規制ピン４が装着された針管２を針基３に挿通する。具体的に説明すると、規制ピン４が装着された針管２を針基３の基端側の開口から入れて針基３の先端側の開口から針先１１を突出させる。更に、突出させた針先１１を引っ張って針管２の拡径部１２及び規制ピン４を針基３内に入れる。そして、拡径部１２が針管保持部２１に当接且つ規制ピン４がピン保持部２２に当接すると、挿通工程が終了してステップＳ３に移る。 In step S <b> 2, which is an insertion process, the needle tube 2 to which the regulation pin 4 is attached is inserted into the needle base 3. More specifically, the needle tube 2 to which the restriction pin 4 is attached is inserted from the opening on the proximal end side of the needle base 3 and the needle tip 11 is projected from the opening on the distal end side of the needle base 3. Further, the protruding needle tip 11 is pulled to put the enlarged diameter portion 12 and the regulation pin 4 of the needle tube 2 into the needle base 3. When the diameter-expanded portion 12 comes into contact with the needle tube holding portion 21 and the restriction pin 4 comes into contact with the pin holding portion 22, the insertion process is completed and the process proceeds to step S3.
固定工程であるステップＳ３では、針管２の針先１１又は中間部１３を引っ張って針管２及び規制ピン４を針基３に固定する。具体的に説明すると、針管２の針先１１又は中間部１３を引っ張って拡径部１２のテーパ部分１２ａを針管保持部２１の狭窄部分２４に嵌合させる（嵌合工程）。そうすると、テーパ部分１２ａが狭窄部分２４によって挟持され、挟持されることで針基３に針管２が固定される。 In step S3, which is a fixing step, the needle tube 11 and the regulation pin 4 are fixed to the needle base 3 by pulling the needle tip 11 or the intermediate portion 13 of the needle tube 2. Specifically, the needle tip 11 or the intermediate portion 13 of the needle tube 2 is pulled to fit the tapered portion 12a of the enlarged diameter portion 12 into the narrowed portion 24 of the needle tube holding portion 21 (fitting process). Then, the tapered portion 12a is sandwiched by the narrowed portion 24, and the needle tube 2 is fixed to the needle base 3 by being sandwiched.
また、針管２の針先１１又は中間部１３を引っ張ると、針管２の拡径部１２に固定される規制ピン４もまた引っ張られる。このように針管２を介して規制ピン４が引っ張られることによって、規制ピン４の中間テーパ部３２及び基端側テーパ部３３がピン保持部２２の第１及び第２係合部分２５，２６に夫々嵌合される。これによって、中間テーパ部３２及び基端側テーパ部３３が第１及び第２係合部分２５，２６よって夫々挟持され、挟持されることで規制ピン４がピン保持部２２の内周部に固定される。このように針管２及び規制ピン４が針基３に固定されるとステップＳ３が終了し、医療用針１が完成する。 Further, when the needle tip 11 or the intermediate portion 13 of the needle tube 2 is pulled, the regulation pin 4 fixed to the enlarged diameter portion 12 of the needle tube 2 is also pulled. By thus pulling the restriction pin 4 through the needle tube 2, the intermediate taper portion 32 and the base end side taper portion 33 of the restriction pin 4 are brought into contact with the first and second engagement portions 25 and 26 of the pin holding portion 22. Each is fitted. As a result, the intermediate taper portion 32 and the base end side taper portion 33 are sandwiched by the first and second engaging portions 25 and 26, respectively, so that the restriction pin 4 is fixed to the inner peripheral portion of the pin holding portion 22. Is done. When the needle tube 2 and the regulation pin 4 are fixed to the needle base 3 in this way, step S3 is completed and the medical needle 1 is completed.
このような工程を有する医療用針１の製造方法は、針管３の針先１１又は中間部１３を引っ張ることで針管２を針基３の狭窄部分２４に嵌合させ、また規制ピン４をピン保持部２２に固定することで、エポキシ樹脂及び接着剤を使用することなく針基３に対する針管２の相対移動を規制することができる。即ち、エポキシ樹脂及び接着剤を使用することなく針管２を針基３に固定することができ、且つ使用中に針管２が針基３に対して突出たり、押し戻されたりすることを防ぐことができる。このように上記製造方法では、エポキシ樹脂及び接着剤を使用する必要がないので、使用期限が長い医療用針１を製造することができる。 In the manufacturing method of the medical needle 1 having such steps, the needle tube 2 is fitted to the narrowed portion 24 of the needle base 3 by pulling the needle tip 11 or the intermediate portion 13 of the needle tube 3, and the regulation pin 4 is pinned. By fixing to the holding part 22, the relative movement of the needle tube 2 with respect to the needle base 3 can be regulated without using an epoxy resin and an adhesive. That is, the needle tube 2 can be fixed to the needle base 3 without using an epoxy resin and an adhesive, and the needle tube 2 can be prevented from protruding or being pushed back with respect to the needle base 3 during use. it can. Thus, in the said manufacturing method, since it is not necessary to use an epoxy resin and an adhesive agent, the medical needle 1 with a long expiration date can be manufactured.
また、針管２に規制ピン４を予め装着して固定させておくことで、針管２を引っ張るだけの作業で針管２と共に規制ピン４を針基３に固定することができる。それ故、医療用針１の製造を容易にすることができる。 Further, by attaching the restriction pin 4 to the needle tube 2 in advance and fixing it, the restriction pin 4 can be fixed to the needle base 3 together with the needle tube 2 by simply pulling the needle tube 2. Therefore, manufacture of the medical needle 1 can be facilitated.
なお、図５に示すように、規制ピン４を固定した後に、その規制ピン４を更にパンチ部材５によって針基３の先端に押し込むようにしてもよい。押し込むことによって、規制ピン４の先端側テーパ部３１が拡径部１２のテーパ部分１２ａを押す。これにより、テーパ部分１２ａがその内側から先端側テーパ部３１に押され、且つその外側から針基３の狭窄部分２４によって押され、テーパ部分１２ａが規制ピン４と針基３とによって挟持されて固定される。これにより、針基３と規制ピン４との間で針管２を簡単に固定することができる。 As shown in FIG. 5, after the regulation pin 4 is fixed, the regulation pin 4 may be further pushed into the tip of the needle base 3 by the punch member 5. By pushing in, the tip side taper portion 31 of the regulation pin 4 pushes the taper portion 12 a of the enlarged diameter portion 12. As a result, the taper portion 12a is pushed from the inside to the tip side taper portion 31, and is pushed from the outside by the narrowed portion 24 of the needle base 3, and the taper portion 12a is held between the regulation pin 4 and the needle base 3. Fixed. Thereby, the needle tube 2 can be easily fixed between the needle base 3 and the regulation pin 4.
［針と針基の固定方法］
上記実施形態の医療用針１では、針基３の内径と針管２の外径との大小関係、規制ピン４の外径と針管２の内径との大小関係、及び針基３の内径と規制ピン４の外径との大小関係を適宜設定することで、挿入時における針管２、針基３及び規制ピン４にそれらの形状変化に対する反発力、即ち元の形状に戻そうとする復元力を発生させている。例えば、嵌合時において、挿入される側の部材が挿入する側の部材によって拡径される（針管２による針基３の拡径等）ことによって、又は挿入される側の部材が挿入する側の部材を縮径する（針管２による規制ピン４の縮径等）ことによって各部材２〜４に復元力を発生させ、この復元力によって当接する各部材２〜４同士を押し付け合わせている。このように、各部材２〜４の当接する部分同士の寸法設計を互いが押し付けあうように適宜選択（即ち、細かく設定）して夫々を共働させることによって、針管２を針基３に固定することができる。なお、本願発明における針管２と針基３との固定方法は前述する方法に限られない。例えば、単に規制ピン４と針基３とを軸線方向に相対変位不能に固定して、針管２が針基３の基端側に後退できないようにして針管２を針基３に固定することができる。以下に、針基３を規制ピン４に固定する方法について説明する。
[How to fix the needle and needle base]
In the medical needle 1 of the above embodiment, the magnitude relationship between the inner diameter of the needle base 3 and the outer diameter of the needle tube 2, the magnitude relationship between the outer diameter of the regulation pin 4 and the inner diameter of the needle tube 2, and the inner diameter and regulation of the needle base 3. By appropriately setting the magnitude relationship with the outer diameter of the pin 4, the needle tube 2, the needle base 3 and the restriction pin 4 at the time of insertion have a repulsive force against their shape change, that is, a restoring force to return to the original shape. Is generated. For example, at the time of fitting, the member to be inserted is enlarged in diameter by the member to be inserted (the diameter of the needle base 3 is increased by the needle tube 2 or the like) or the side to be inserted is inserted. By reducing the diameter of the member (reducing diameter of the restriction pin 4 by the needle tube 2 and the like), a restoring force is generated in the members 2 to 4, and the members 2 to 4 that are in contact with each other are pressed against each other. Thus, the needle tube 2 is fixed to the needle base 3 by appropriately selecting (ie, finely setting) the dimensional design of the abutting portions of the members 2 to 4 so that they are pressed against each other. can do. In addition, the fixing method of the needle tube 2 and the needle base 3 in this invention is not restricted to the method mentioned above. For example, the restriction tube 4 and the needle base 3 are simply fixed so as not to be relatively displaceable in the axial direction, and the needle tube 2 is fixed to the needle base 3 so that the needle tube 2 cannot be retracted to the proximal end side of the needle base 3. it can. Hereinafter, a method for fixing the needle base 3 to the restriction pin 4 will be described.
［針基と規制ピンの固定方法］
規制ピン４及び針基３の各々に互いに対応する位置に凹凸を設け、これらの凹凸を嵌合させることによって規制ピン４と針基３とが軸線方向に相対変位不能に固定する。これによって針管２が軸線方向に動かないように針管２を針基に固定することができる。また、かしめ嵌合によって規制ピン４と針基３とを固定する方法を採用してもよい。かしめ嵌合による固定方法としては、例えば、規制ピン４を柔らかい材質の外側部分と硬い材質の内側部分とで構成し、針管２及び針基３と内側規制部分とで外側部分を挟み込んで外側規制ピンをかしめさせることで、規制ピン４と針基３を軸線方向に不動に固定することができる。
[How to fix the needle base and restriction pin]
Irregularities are provided at positions corresponding to each of the restriction pin 4 and the needle base 3, and the restriction pins 4 and the needle base 3 are fixed so as not to be relatively displaceable in the axial direction by fitting these irregularities. Thus, the needle tube 2 can be fixed to the needle base so that the needle tube 2 does not move in the axial direction. Moreover, you may employ | adopt the method of fixing the control pin 4 and the needle base 3 by caulking fitting. As a fixing method by caulking fitting, for example, the regulation pin 4 is composed of an outer portion made of a soft material and an inner portion made of a hard material, and the outer portion is sandwiched between the needle tube 2 and the needle base 3 and the inner regulation portion, thereby regulating the outer side. By caulking the pin, the regulation pin 4 and the needle base 3 can be fixed in the axial direction.
また、超音波等による樹脂溶融を利用して規制ピン４と針基３とを固定してもよい。樹脂溶融による固定方法は、各部材の寸法ずれを許容することができる。即ち、樹脂溶融による固定方法は、細かな寸法ずれに特に影響を受けずに、針管２を針基３に固定することができるため好ましい方法である。また、樹脂溶融を用いた固定方法では、規制ピン４を超音波により溶融可能な樹脂材料とすると、超音波溶着により針基３と規制ピン４を一体化させて一部材とすることができる。これにより、針基３に対する針管２の軸線方向基端側への動きを効果的に防止することができる。また、規制ピン４を針基３に固定する方法としては、前述する樹脂溶融による溶着、及び凹凸及びかしめ等を用いた嵌合以外に、後述する摩擦を利用した固定方法がある。 Further, the regulation pin 4 and the needle base 3 may be fixed using resin melting by ultrasonic waves or the like. The fixing method by resin melting can allow dimensional deviation of each member. That is, the fixing method by resin melting is a preferable method because the needle tube 2 can be fixed to the needle base 3 without being particularly affected by the small dimensional deviation. Further, in the fixing method using resin melting, when the regulation pin 4 is made of a resin material that can be melted by ultrasonic waves, the needle base 3 and the regulation pin 4 can be integrated by ultrasonic welding to form a single member. Thereby, the movement to the axial direction proximal end side of the needle tube 2 with respect to the needle base 3 can be effectively prevented. Further, as a method of fixing the regulation pin 4 to the needle base 3, there is a fixing method using friction described later, in addition to the above-described welding by resin melting and fitting using unevenness and caulking.
［第２実施形態］
第２実施形態の医療用針１Ａは、第１実施形態の医療用針１と構成が類似している。以下では、第２実施形態の医療用針１Ａの構成について第１実施形態の医療用針１と異なる点について主に説明し、同一の構成については同一の符号を付して図示及び説明を省略する場合がある。
[Second Embodiment]
The medical needle 1A of the second embodiment is similar in configuration to the medical needle 1 of the first embodiment. In the following, the configuration of the medical needle 1A of the second embodiment will be mainly described with respect to differences from the medical needle 1 of the first embodiment, and the same components will be denoted by the same reference numerals and the illustration and description thereof will be omitted. There is a case.
図６に示すように、医療用針１Ａは、針管２，針基３Ａ、及び規制ピン４Ａを有している。針基３Ａは、第１実施形態の医療用針１における中間部分２７及び第２係合部分２６を有しておらず、第１係合部分２５の基端に円筒部２３が一体的に形成されている。針基３Ａの針管保持部２１の基端部分２１ｂの内周面が針管２の拡径部１２の外周面より大径に形成されており、基端部分２１ｂと拡径部１２との間には規制ピン４Ａが挿入されている。 As shown in FIG. 6, the medical needle 1A includes a needle tube 2, a needle base 3A, and a restriction pin 4A. The needle base 3A does not have the intermediate portion 27 and the second engagement portion 26 in the medical needle 1 of the first embodiment, and the cylindrical portion 23 is integrally formed at the proximal end of the first engagement portion 25. Has been. The inner peripheral surface of the proximal end portion 21 b of the needle tube holding portion 21 of the needle base 3 </ b> A is formed to have a larger diameter than the outer peripheral surface of the enlarged diameter portion 12 of the needle tube 2, and between the proximal end portion 21 b and the enlarged diameter portion 12. The restriction pin 4A is inserted.
規制ピン４Ａは、大略円筒状に形成されており、本体部３４Ａと、内向きフランジ３６とを有している。本体部３４Ａは、大略円筒状に形成されており、その先端から基端部分２１ｂと拡径部１２との間に挿入されている。本体部３４Ａの基端部は、拡径部１２から針基３Ａの基端側に突出しており、そこには内向きフランジ３６が一体的に設けられている。内向きフランジ３６は、本体部３４Ａの基端部に周方向全周にわたって形成されており、本体部３４Ａの半径方向内方に突出している。 The restriction pin 4 </ b> A is formed in a substantially cylindrical shape, and has a main body portion 34 </ b> A and an inward flange 36. The main body portion 34A is formed in a substantially cylindrical shape, and is inserted between the proximal end portion 21b and the enlarged diameter portion 12 from the distal end. The base end portion of the main body portion 34A protrudes from the enlarged diameter portion 12 to the base end side of the needle base 3A, and an inward flange 36 is integrally provided there. The inward flange 36 is formed on the base end portion of the main body portion 34A over the entire circumference, and protrudes inward in the radial direction of the main body portion 34A.
このように形成されている規制ピン４Ａは、拡径部１２に外装されており、内向きフランジ３６が拡径部１２の基端に当接している。本体部３４Ａの内径は、拡径部１２の外径と略一致又は若干小さくなっており、本体部３４Ａ内に拡径部１２が嵌合されて固定されるようになっている。拡径部１２に固定された規制ピン４は、針管２と一体的に動くようになっており、針管２と共に針基３に挿入される。挿入された規制ピン４は、拡径部１２と基端部分２１ｂとの間に配置され、前述する溶融、嵌合又は摩擦を利用した固定方法にて針基３に固定される。これにより、規制ピン４Ａは、針基３に対して軸線方向に相対変位不能になり、内向きフランジ３６によって針管２が押し戻されることを防ぐことができるようになっている。 The regulation pin 4 </ b> A formed in this way is externally mounted on the enlarged diameter portion 12, and the inward flange 36 is in contact with the proximal end of the enlarged diameter portion 12. The inner diameter of the main body portion 34A is substantially equal to or slightly smaller than the outer diameter of the enlarged diameter portion 12, and the enlarged diameter portion 12 is fitted and fixed in the main body portion 34A. The restriction pin 4 fixed to the enlarged diameter portion 12 moves integrally with the needle tube 2 and is inserted into the needle base 3 together with the needle tube 2. The inserted restriction pin 4 is disposed between the enlarged diameter portion 12 and the base end portion 21b, and is fixed to the needle base 3 by the fixing method using melting, fitting, or friction described above. As a result, the restriction pin 4A cannot be displaced relative to the needle base 3 in the axial direction, and the needle tube 2 can be prevented from being pushed back by the inward flange 36.
第２実施形態の医療用針１Ａは、その他、医療用針１Ａと同様の作用効果を奏する。 The medical needle 1A of the second embodiment has the same operational effects as the medical needle 1A.
［その他の実施形態について］
本実施形態の医療用針１では、針管保持部２１がその中間部分にテーパ状の狭窄部分２４を有するように形成されているが、狭窄部分２４は必ずしもテーパ形状である必要はない。狭窄部分２４は、軸線Ｌ１に直交するフラット形状であってもよい。この場合、狭窄部分２４のフラット部分に拡径部１２のテーパ部分１２ａを嵌合させて固定させることができる。また、ピン保持部２２にも同様に段差部分を形成し、段差部分に中間テーパ部３２が係合するように構成することによって、ピン保持部２２に第１及び第２係合部分２５，２６をテーパ状に形成することなく規制ピン４を針基３に固定することができる。
[Other embodiments]
In the medical needle 1 of the present embodiment, the needle tube holding portion 21 is formed so as to have a tapered narrowed portion 24 in the middle portion thereof, but the narrowed portion 24 does not necessarily have a tapered shape. The narrowed portion 24 may have a flat shape orthogonal to the axis L1. In this case, the tapered portion 12 a of the enlarged diameter portion 12 can be fitted and fixed to the flat portion of the narrowed portion 24. Similarly, a step portion is formed in the pin holding portion 22 so that the intermediate taper portion 32 is engaged with the step portion, whereby the first and second engaging portions 25 and 26 are engaged with the pin holding portion 22. The restriction pin 4 can be fixed to the needle base 3 without forming a taper shape.
また、針管２の拡径部１２は、テーパ部分１２ａと円筒部分１２ｂとを有しているが、テーパ部分１２ａをなくして中間部分１３と円筒部分１２ｂとの間に張り出し部を形成するようにしてもよい。張り出し部は、中間部分１３の周方向全周にわたって延在させ、中間部分１３から円筒部分１２ｂに向かって半径方向外方に張り出させるようにする。このように形成することで、張り出し部分を針管保持部２１のテーパ状の狭窄部分２４に嵌合させることができ、張り出し部分によって針管２と針基３を固定することができる。また、規制ピン４でも、中間テーパ部３２をなくして第１円筒部３４と第２円筒部３５との間に張り出し部分を形成し、この張り出し部分を第１係合部分２５に係合（又は嵌合）させるようにしてもよい。 Further, the enlarged diameter portion 12 of the needle tube 2 has a tapered portion 12a and a cylindrical portion 12b. However, the protruding portion is formed between the intermediate portion 13 and the cylindrical portion 12b without the tapered portion 12a. May be. The projecting portion extends over the entire circumference of the intermediate portion 13 so as to project outward in the radial direction from the intermediate portion 13 toward the cylindrical portion 12b. By forming in this way, the overhanging portion can be fitted into the tapered narrowed portion 24 of the needle tube holding portion 21, and the needle tube 2 and the needle base 3 can be fixed by the overhanging portion. Further, in the restriction pin 4, the intermediate taper portion 32 is eliminated and an overhanging portion is formed between the first cylindrical portion 34 and the second cylindrical portion 35, and this overhanging portion is engaged with the first engaging portion 25 (or Fitting).
本実施形態の医療用針１では、一般針について説明したが、前述の通り留置針や両頭針に適用してもよい。両頭針に適用する場合は、針管の外周面の中央部分に拡径部を一体的に形成し、この拡径部に規制ピン４を挿入するようにすればよい。また、医療用針１では、規制ピン４が針管２の拡径部１２に挿入されているが、必ずしも挿入されている必要はなくリング状に形成されていてもよい。即ち、規制ピン４に相当する規制部材は、ピン保持部２２内に配置して針管２のうごきを規制できるような形状であればよい。 In the medical needle 1 of the present embodiment, a general needle has been described. However, as described above, it may be applied to an indwelling needle or a double-ended needle. When applied to a double-ended needle, an enlarged diameter portion may be integrally formed at the central portion of the outer peripheral surface of the needle tube, and the regulation pin 4 may be inserted into the enlarged diameter portion. Further, in the medical needle 1, the regulation pin 4 is inserted into the enlarged diameter portion 12 of the needle tube 2, but it is not necessarily inserted and may be formed in a ring shape. That is, the restricting member corresponding to the restricting pin 4 may be any shape that can be disposed in the pin holding portion 22 to restrict the movement of the needle tube 2.
また、第２実施形態では、針管２が拡径部１２を有しているが、摩擦を利用して針管２を規制ピン４に固定した場合は必ずしも必要ではない。例えば、針管２外周面の一部（例えば、基端部分）をブラスト加工等により粗面化し、この粗面に規制ピン４を当接させる。これにより、粗面と規制ピン４との間に大きな摩擦力を作用させることができ、針管２が規制ピン４に対して相対変位することを防ぐことができる。このように、針管２が拡径部１２を有さなくても、摩擦を利用することで針管２と針基３とを固定することができる。 Moreover, in 2nd Embodiment, although the needle tube 2 has the enlarged diameter part 12, when fixing the needle tube 2 to the control pin 4 using friction, it is not necessarily required. For example, a part (for example, a base end portion) of the outer peripheral surface of the needle tube 2 is roughened by blasting or the like, and the regulation pin 4 is brought into contact with the rough surface. Accordingly, a large frictional force can be applied between the rough surface and the restriction pin 4, and the needle tube 2 can be prevented from being displaced relative to the restriction pin 4. Thus, even if the needle tube 2 does not have the enlarged diameter portion 12, the needle tube 2 and the needle base 3 can be fixed by utilizing friction.
１ 医療用針
２ 針管
３ 針基
４ 規制ピン
１１ 針先
１２ 拡径部
１３ 中間部
２１ 針管保持部
２２ ピン保持部
２４ 狭窄部分
２５ 第１係合部分
２６ 第２係合部分
３１ 先端側テーパ部
３２ 中間テーパ部
３３ 基端側テーパ部
DESCRIPTION OF SYMBOLS 1 Medical needle 2 Needle tube 3 Needle base 4 Restriction pin 11 Needle tip 12 Expanded part 13 Intermediate part 21 Needle tube holding part 22 Pin holding part 24 Stenosis part 25 First engagement part 26 Second engagement part 31 Tip side taper part 32 Intermediate taper part 33 Base end side taper part
Claims (7)
基端側から先端側に向かって縮径する狭窄部分を有し、前記針先が先端から外方に突出するように前記針管が軸線方向に挿通され、前記狭窄部分に前記拡径部を係合させて前記針管が前記先端から前記軸線方向に抜けないようになっている樹脂材料により成型された針基と、
前記針基内に挿入され、前記軸線方向に相対変位しないように樹脂溶融による溶着によって前記針基に固定されて、少なくとも一部が前記針管の拡径部の基端に配置されていることで前記針管の針先が前記針基内に後退しないように前記針管の動きを規制する樹脂材料により成型された筒状の規制部材とを備え、
前記針管は、前記針基に固定される規制部材によって前記針管の動きが規制されることによって接着剤を使用することなく前記針基に固定されている、医療用針。 A needle tube made of a metallic cylindrical member, having a sharp needle tip at the tip, and having an enlarged diameter portion larger than the outer diameter of the tip at a portion different from the tip;
A narrowed portion that decreases in diameter from the proximal end toward the distal end; the needle tube is inserted in an axial direction so that the needle tip protrudes outward from the distal end; and the enlarged diameter portion is engaged with the narrowed portion. A needle base molded from a resin material that prevents the needle tube from coming off in the axial direction from the tip;
Inserted into the needle base, fixed to the needle base by welding by resin melting so as not to be relatively displaced in the axial direction, and at least a part of the needle base being disposed at the proximal end of the enlarged diameter portion of the needle tube A cylindrical regulating member molded from a resin material that regulates the movement of the needle tube so that the needle tip of the needle tube does not retract into the needle base,
The needle tube is fixed to the needle base without using an adhesive by restricting the movement of the needle tube by a restricting member fixed to the needle base.
基端側から先端側に向かって縮径する狭窄部分を有し、前記針先が先端から外方に突出するように前記針管が軸線方向に挿通され、前記狭窄部分に前記拡径部を係合させて前記針管が前記先端から前記軸線方向に抜けないようになっている針基と、
前記針基内に挿入され、前記軸線方向に相対変位しないように前記針基に固定されて、少なくとも一部が前記針管の拡径部の基端に配置されていることで前記針管の針先が前記針基内に後退しないように前記針管の動きを規制する筒状の規制部材とを備え、
前記規制部材は、前記針基に挿入されて縮径され、縮径されることによって発生する復元力により前記規制部材自身を前記針基に押し付けて固定させ、
前記針管は、固定される前記規制部材によって前記針管の動きが規制されることによって接着剤を使用することなく前記針基に固定されている、医療用針。 A needle tube made of a metallic cylindrical member, having a sharp needle tip at the tip, and having an enlarged diameter portion larger than the outer diameter of the tip at a portion different from the tip;
A narrowed portion that decreases in diameter from the proximal end toward the distal end; the needle tube is inserted in an axial direction so that the needle tip protrudes outward from the distal end; and the enlarged diameter portion is engaged with the narrowed portion. A needle base that prevents the needle tube from coming off in the axial direction from the tip;
The needle tip of the needle tube is inserted into the needle base, is fixed to the needle base so as not to be relatively displaced in the axial direction, and is at least partially disposed at the proximal end of the enlarged diameter portion of the needle tube. A cylindrical regulating member that regulates the movement of the needle tube so as not to retract into the needle base,
The regulating member is inserted into the needle base and is reduced in diameter, and the regulating member itself is pressed against the needle base by a restoring force generated by being reduced in diameter, and fixed.
The needle tube is fixed to the needle base without using an adhesive by the movement of the needle tube being restricted by the restriction member to be fixed.
基端側から先端側に向かって縮径する狭窄部分を有し、前記針先が先端から外方に突出するように前記針管が軸線方向に挿通され、前記狭窄部分に前記拡径部を係合させて前記針管が前記先端から前記軸線方向に抜けないようになっている針基と、
前記針基に挿入されて、前記軸線方向に相対変位しないように前記針基に固定されて、少なくとも一部が前記針管の拡径部の基端に配置されていることで前記針管の針先が前記針基内に後退しないように前記針管の動きを規制する筒状の規制部材とを備え、
前記規制部材及び前記針基は、互いに対応する位置に配置される凹凸を夫々有し、
前記規制部材は、前記凹凸を嵌合させることによって前記針基に固定されて前記針管の動きを規制し、
前記針管は、前記規制部材によって前記針管の動きが規制されることによって接着剤を使用することなく前記針基に固定されている、医療用針。 A needle tube made of a metallic cylindrical member, having a sharp needle tip at the tip, and having an enlarged diameter portion larger than the outer diameter of the tip at a portion different from the tip;
A narrowed portion that decreases in diameter from the proximal end toward the distal end; the needle tube is inserted in an axial direction so that the needle tip protrudes outward from the distal end; and the enlarged diameter portion is engaged with the narrowed portion. A needle base that prevents the needle tube from coming off in the axial direction from the tip;
The needle tip of the needle tube is inserted into the needle base and fixed to the needle base so as not to be relatively displaced in the axial direction, and at least a part is disposed at the proximal end of the enlarged diameter portion of the needle tube. A cylindrical regulating member that regulates the movement of the needle tube so as not to retract into the needle base,
The restricting member and the needle base each have irregularities arranged at positions corresponding to each other,
The regulating member is fixed to the needle base by fitting the irregularities to regulate the movement of the needle tube,
The needle tube is fixed to the hub without using an adhesive by the movement of the needle tube is restricted by the restricting member, a medical needle.
基端側から先端側に向かって縮径する狭窄部分を有し、前記針先が先端から外方に突出するように前記針管が軸線方向に挿通され、前記狭窄部分に前記拡径部を係合させて前記針管が前記先端から前記軸線方向に抜けないようになっている針基と、
前記針基に挿入されて、前記軸線方向に相対変位しないように前記針基に固定されて、少なくとも一部が前記針管の拡径部の基端に配置されていることで前記針管の針先が前記針基内に後退しないように前記針管の動きを規制する筒状の規制部材とを備え、
前記規制部材は、径方向の復元力を発生させるべく前記針基に押し込まれるようにして挿入され、前記復元力によって前記針基と押し付け合わせて前記針基に固定され、
前記針管は、固定される前記規制部材によって前記針管の動きが規制されることによって接着剤を使用することなく前記針基に固定されている、医療用針。 A needle tube made of a metallic cylindrical member, having a sharp needle tip at the tip, and having an enlarged diameter portion larger than the outer diameter of the tip at a portion different from the tip;
A narrowed portion that decreases in diameter from the proximal end toward the distal end; the needle tube is inserted in an axial direction so that the needle tip protrudes outward from the distal end; and the enlarged diameter portion is engaged with the narrowed portion. A needle base that prevents the needle tube from coming off in the axial direction from the tip;
The needle tip of the needle tube is inserted into the needle base and fixed to the needle base so as not to be relatively displaced in the axial direction, and at least a part is disposed at the proximal end of the enlarged diameter portion of the needle tube. A cylindrical regulating member that regulates the movement of the needle tube so as not to retract into the needle base,
The regulating member is inserted so as to be pushed into the needle base so as to generate a restoring force in the radial direction, pressed against the needle base by the restoring force, and fixed to the needle base,
The needle tube is fixed to the needle base without using an adhesive by the movement of the needle tube being restricted by the restriction member to be fixed.
前記拡径部及び狭窄部分は、前記針管の先端部に向かって先細りのテーパ形状に形成されており、
前記規制部材は、前記拡径部と係合する拡径部係合部分と、外径が前記拡径部係合部分の内径より大きく形成され且つ前記係止部分に係止されて前記規制部材を前記針基に固定させる被係止部分と、を有する、請求項５に記載の医療用針。 The needle base has a locking portion formed on the proximal side from the narrowed portion,
The enlarged diameter portion and the narrowed portion are formed in a tapered shape that tapers toward the distal end portion of the needle tube,
The restricting member includes an enlarged-diameter engaging portion that engages with the enlarged-diameter portion, an outer diameter that is larger than an inner diameter of the enlarged-diameter engaging portion, and is engaged with the engaging portion, thereby restricting the restricting member. The medical needle according to claim 5, further comprising a locked portion that fixes the needle to the needle base.
The medical needle according to claim 1 or 3 , wherein the regulating member is fixed in the needle base in a state of being disposed between the needle tube and the needle base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013247977A JP6318585B2 (en) | 2013-11-29 | 2013-11-29 | Medical needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013247977A JP6318585B2 (en) | 2013-11-29 | 2013-11-29 | Medical needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2015104526A JP2015104526A (en) | 2015-06-08 |
| JP6318585B2 true JP6318585B2 (en) | 2018-05-09 |
Family
ID=53435030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013247977A Active JP6318585B2 (en) | 2013-11-29 | 2013-11-29 | Medical needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6318585B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7428487B2 (en) * | 2019-07-29 | 2024-02-06 | テルモ株式会社 | Blood collection kit and method for manufacturing the blood collection kit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330877Y2 (en) * | 1973-07-07 | 1978-08-01 | ||
| JP2004154210A (en) * | 2002-11-05 | 2004-06-03 | Enomoto Co Ltd | Medical instrument, animal treating instrument and their manufacturing method |
| JP2011011000A (en) * | 2009-07-06 | 2011-01-20 | Terumo Corp | Needle tube, medical instrument and method for manufacturing medical instrument |
-
2013
- 2013-11-29 JP JP2013247977A patent/JP6318585B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015104526A (en) | 2015-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4978339A (en) | Non-reusable syringe | |
| CN103269739B (en) | Pin safety device and assembly | |
| EP2498841B1 (en) | Iv-catheter insertion device | |
| US10525208B2 (en) | Needle protection assembly | |
| EP2279770B1 (en) | Needle | |
| US20120083749A1 (en) | Needle tube, medical instrument and method for manufacturing medical instrument | |
| EP2279771B1 (en) | New safe latching type self-destroying syringe | |
| JP6028037B2 (en) | Medical safety needle that prevents re-exposure of the needle tip | |
| US6676638B2 (en) | Indwelling needle with an inner needle retraction mechanism | |
| JP5237572B2 (en) | Balloon catheter and manufacturing method thereof | |
| US8460241B2 (en) | Needle protection assembly with locking element | |
| JP5813500B2 (en) | Needle protection assembly with radially movable locking element | |
| EP2368499B1 (en) | Treatment tool | |
| KR20180004155A (en) | Safety devices for syringes | |
| JP6618335B2 (en) | Method and apparatus for manufacturing a medical needle | |
| CN109475723B (en) | Catheter assembly | |
| WO2017209304A1 (en) | Needlepoint protector for indwelling needle and indwelling needle assembly | |
| JP6318585B2 (en) | Medical needle | |
| WO2015096560A1 (en) | Connection structure between needle seat and syringe in safe injector | |
| US20090054872A1 (en) | Endovascular Device Tip Assembly | |
| JP7126491B2 (en) | catheter | |
| TW200300354A (en) | Injection needle retractable injector | |
| JP4696860B2 (en) | Medical needle | |
| JP2007312982A (en) | Medical needle with needle cover | |
| JP2018108454A (en) | Needle shield assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20160802 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170530 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20170531 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20170731 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20171024 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20171225 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20180306 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180319 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6318585 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |