JPH077969Y2 - Infusion device - Google Patents
Infusion deviceInfo
- Publication number
- JPH077969Y2 JPH077969Y2 JP9944089U JP9944089U JPH077969Y2 JP H077969 Y2 JPH077969 Y2 JP H077969Y2 JP 9944089 U JP9944089 U JP 9944089U JP 9944089 U JP9944089 U JP 9944089U JP H077969 Y2 JPH077969 Y2 JP H077969Y2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- infusion device
- engaging portion
- hollow body
- infusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は医療において、注射針と輸血または輸液用チュ
ーブとの間に接続され、輸血または輸液中に混入する空
気を抜くために用いられる輸液装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an infusion solution which is connected between an injection needle and a blood transfusion or infusion tube and is used to remove air mixed in the blood transfusion or the infusion in medical care. Regarding the device.
（従来の技術） この種の医療用の輸液装置としては、底部が栓で閉塞さ
れる開口部を有する中空体と、該中空体の内部に連通し
て該中空体から延出された一対の輸液管とから成る通称
タコ管といわれるものが従来から知られており、その製
造は、通常、射出成形により行われる。(Prior Art) As a medical infusion device of this type, a hollow body having an opening whose bottom is closed by a plug, and a pair of hollow bodies communicating with the inside of the hollow body and extending from the hollow body A so-called octopus tube, which is called an infusion tube, has been conventionally known, and its manufacture is usually performed by injection molding.
かかる輸液装置では、輸血や輸液の漏出を防止するため
に、該輸液装置とは別に成形される栓により前記開口部
が確実に閉塞されることが必要であることはいうまでも
ないが、上記射出成形による輸液装置の成形において、
型開きをする際に該型開きの方向に生じる張力が該開口
部に作用し、前記栓が係合する該開口部の係合部に歪が
生じることがある。Needless to say, in such an infusion device, in order to prevent blood transfusion or leakage of the infusion, the opening must be surely closed by a plug formed separately from the infusion device. When molding an infusion device by injection molding,
When the mold is opened, the tension generated in the direction of the mold opening may act on the opening, and the engaging portion of the opening with which the plug engages may be distorted.
また、かかる成形においては、該開口部に設けた係合部
の肉厚が周方向に一定でない形状である場合には、その
成形後の冷却の際に、肉厚の差異によって該係合部の各
部で収縮率に差異が生じ、その結果に該係合部に歪が生
じることがある。Further, in such molding, if the thickness of the engaging portion provided in the opening is not constant in the circumferential direction, the engaging portion may differ due to the difference in the thickness during cooling after the molding. There may be a difference in contraction rate between the respective parts, and as a result, the engagement part may be distorted.
このように、該開口部の係合部に歪が生じると、該開口
部が前記栓により確実に閉塞されず、輸血や輸液の漏出
が発生する虞れがあった。As described above, when the engaging portion of the opening portion is distorted, the opening portion may not be surely closed by the plug, and blood transfusion or infusion leakage may occur.
（解決しようとする課題） 本考案はかかる不都合を解消し、底部が栓で閉塞される
開口部を有する輸液装置において、該栓が係合する開口
部の係合部に歪が生じることなく射出成形により成形す
ることができる輸液装置を提供することを目的とする。(Problems to be Solved) The present invention solves the above inconvenience, and in an infusion device having an opening whose bottom is closed by a stopper, injection is performed without causing distortion in the engaging portion of the opening with which the stopper is engaged. An object is to provide an infusion device that can be molded by molding.
（課題を解決する手段） 本考案の輸液装置はかかる目的を達成するために、底部
が栓で閉塞される開口部を有する中空体と、該中空体の
内部に連通して該中空体から延出された一対の輸液管と
から成り、射出成形により成形された輸液装置におい
て、少なくとも該射出成形における型開きの際に該型開
きの方向に張力が作用する前記開口部の周囲の位置に溝
部を設けたことを特徴とする。(Means for Solving the Problem) In order to achieve such an object, the infusion device of the present invention has a hollow body having an opening whose bottom is closed by a stopper, and a hollow body communicating with the inside of the hollow body and extending from the hollow body. An infusion device formed by injection molding, which comprises a pair of ejected infusion pipes, and at least a groove portion at a position around the opening where a tension acts in the direction of the die opening during the die opening in the injection molding. Is provided.
また、前記栓が係合する前記開口部の係合部の周囲に前
記溝を設けて該係合部の肉厚を略一定としたことを特徴
とする。Further, the groove is provided around the engaging portion of the opening with which the plug engages to make the thickness of the engaging portion substantially constant.
（作用） かかる手段によれば、前記輸液装置の射出成形において
型開きをする際に該型開きの方向に生じる張力は、前記
溝部を介して前記開口部に作用するので、該張力が該開
口部に直接作用するのが防止される。(Operation) According to such means, the tension generated in the direction of the mold opening when the mold is opened in the injection molding of the infusion device acts on the opening through the groove, so that the tension is applied to the opening. Direct action on the part is prevented.
また、前記栓が係合する前記開口部の係合部の周囲に前
記溝を設けて該係合部の肉厚を略一定としたときには、
上記射出成形後の冷却の際に、該係合部の各部の収縮率
が略一定となり、該係合部の各部がほぼ均一に収縮す
る。Further, when the groove is provided around the engaging portion of the opening with which the plug engages to make the thickness of the engaging portion substantially constant,
At the time of cooling after the injection molding, the contraction rate of each part of the engaging part becomes substantially constant, and each part of the engaging part contracts substantially uniformly.
（実施例） 本考案の輸液装置の一例を第１図乃至第３図に従って説
明する。第１図及び第２図はそれぞれ該輸液装置の断面
図及び底面図、第３図は該輸液装置の成形方法を説明す
るための説明図である。(Example) An example of the infusion device of the present invention will be described with reference to FIGS. 1 and 2 are a cross-sectional view and a bottom view of the infusion device, respectively, and FIG. 3 is an explanatory diagram for explaining a molding method of the infusion device.
第１図及び第２図で、輸液装置１は、底部２が開口部３
を有するドーム形状の中空体４と、該中空体４の下部か
ら互いに反対側に水平方向に延設された一対の輸液管5
a,5bとから成り、両輸液管5a,5bは中空体４の内部に連
通して該中空体４に一体に設けられている。In FIGS. 1 and 2, the infusion device 1 has a bottom 2 with an opening 3
A hollow body 4 having a dome shape, and a pair of infusion tubes 5 horizontally extending from the lower part of the hollow body 4 to opposite sides.
The infusion pipes 5a and 5b are formed integrally with the hollow body 4 so as to communicate with the inside of the hollow body 4.
中空体４の開口部３は、第２図示のようにその円形の開
口穴3aを中心にこれと同心で放射方向に張り出した形状
に形成されると共に第１図示のように厚肉に形成されて
いる。そして、該開口部３の内周面には、第１図示のよ
うに開口穴3aに嵌挿されて該開口穴3aを閉塞する仮想線
示の栓６が係合する係合部７が設けられている。The opening 3 of the hollow body 4 is formed in a shape that is concentric with the circular opening hole 3a as shown in the second illustration and projects radially in the same direction, and is formed thick as shown in the first illustration. ing. The inner peripheral surface of the opening 3 is provided with an engaging portion 7 with which a plug 6 shown in phantom, which is fitted into the opening hole 3a and closes the opening hole 3a, is engaged, as shown in the first illustration. Has been.
また、該開口部３の係合部７の周囲には、第１図及び第
２図示のように開口穴3aと同心のリング状の溝部８が形
成され、該溝部８は、第１図示のように中空体４の内部
側に向かって係合部７の略上端位置の深さまで中空体４
の軸心方向の延びている。そして、係合部７は開口穴3a
と溝部８との間で周方向に略一定の肉厚で形成されてい
る。A ring-shaped groove 8 concentric with the opening hole 3a is formed around the engaging portion 7 of the opening 3 as shown in FIGS. 1 and 2, and the groove 8 is shown in FIG. The hollow body 4 toward the inner side of the hollow body 4 to a depth approximately at the upper end position of the engaging portion 7.
Extends in the axial direction. The engaging portion 7 has an opening hole 3a.
Between the groove portion 8 and the groove portion 8 is formed with a substantially constant thickness in the circumferential direction.
かかる構成の輸液装置１は以下に第３図に従って説明す
るように射出成形により製造される。The infusion device 1 having such a configuration is manufactured by injection molding as described below with reference to FIG.
第３図で、９は前記輸液装置１を内部で成形するための
成形型、10は前記中空体４の内周面を形成すべく成形型
９内に上下方向に向けて挿入された中間中子、11a,11b
はそれぞれ前記輸液管5a,5bの内周面を形成すべく中間
中子10に向かって左右から水平に成形型９内に挿入され
た中子である。In FIG. 3, 9 is a molding die for molding the infusion device 1 inside, 10 is an intermediate middle inserted vertically in the molding die 9 to form the inner peripheral surface of the hollow body 4. Child, 11a, 11b
Are cores inserted horizontally into the molding die 9 from the left and right toward the intermediate core 10 so as to form the inner peripheral surfaces of the infusion tubes 5a and 5b.
中間中子10は、その成形型９内に挿入される先端部に前
記中空体４の内周面を形成する小径部12を備え、該小径
部12は、中間中子10の大径部13の先端面の中央部に前記
係合部７の内周面を形成する段部14を介して一体に設け
られている。そして、中子11a,11bは、それぞれ成形型
９内に挿入されてその先端面が該小径部12の下部に当接
されている。The intermediate core 10 is provided with a small diameter portion 12 forming an inner peripheral surface of the hollow body 4 at a tip portion inserted into the molding die 9, and the small diameter portion 12 is the large diameter portion 13 of the intermediate core 10. Is integrally provided at the center of the front end surface of the engaging member 7 via a step portion 14 forming the inner peripheral surface of the engaging portion 7. Then, the cores 11a and 11b are inserted into the molding die 9, respectively, and the tip surfaces of the cores 11a and 11b are in contact with the lower portion of the small diameter portion 12.
また、中間中子10の大径部13の先端面には、段部14の周
囲の位置で前記溝部８を形成するための筒状の凸部15が
小径部12と同心に突設され、該凸部15の先端は、段部14
の略先端位置まで延びている。Further, on the tip surface of the large diameter portion 13 of the intermediate core 10, a cylindrical convex portion 15 for forming the groove portion 8 at a position around the step portion 14 is provided concentrically with the small diameter portion 12, The tip of the convex portion 15 has a step 14
Extends almost to the tip position.
成形型９は、中間中子10の軸心上で左右に分割される一
対の分割型9a,9bから成り、中間中子10及び中子11a,11b
との間に輸液装置10を成形するためのキャビティ16を形
成している。該キャビティ16は、その右側の端部が、分
割型9bに形成された湯道17を介して溶融樹脂18の射出ノ
ズル19に連通している。The molding die 9 is composed of a pair of split dies 9a and 9b which are divided into right and left on the axis of the intermediate core 10, and the intermediate core 10 and the cores 11a and 11b.
A cavity (16) for molding the infusion device (10) is formed between and. The right end of the cavity 16 communicates with an injection nozzle 19 for the molten resin 18 via a runner 17 formed in the split mold 9b.
かかる成形型９では、射出ノズル19からキャビティ16内
に溶融樹脂18を射出して充填することにより該キャビテ
ィ16内に前記輸液装置１が成形される。このとき、第１
図及び第３図において、前記輸液管5a,5bは、それぞれ
中子11a,11bと分割型9a,9bとの間のキャビティ16におい
て成形され、前記中空体４は、溝部８及び係合部７を有
する開口部３と共に中間中子10及び成形型９間のキャビ
ティ16において成形される。In the molding die 9, the infusion device 1 is molded in the cavity 16 by injecting and filling the molten resin 18 from the injection nozzle 19 into the cavity 16. At this time, the first
In FIG. 3 and FIG. 3, the infusion tubes 5a and 5b are molded in the cavities 16 between the cores 11a and 11b and the split molds 9a and 9b, respectively, and the hollow body 4 includes the groove portion 8 and the engaging portion 7. Is molded in the cavity 16 between the intermediate core 10 and the molding die 9 with the opening 3 having.
そして、かかる成形後に、中間中子10及び中子11a,11b
が成形型９内から抜脱されると共に、分割型9a,9bが左
右に開かれる。Then, after such molding, the intermediate core 10 and the cores 11a, 11b.
Is removed from the molding die 9 and the split dies 9a and 9b are opened left and right.
この時、分割型9a,9bと輸液装置１の開口部３との接触
面において、第３図示のように張力T,Tが作用するが、
該接触面と係合部７との間には溝部８が形成されている
ため、該張力T,Tは、係合部７にはほとんど作用せず、
このため、該係合部７が張力T,Tによって歪むのが防止
される。At this time, tensions T and T act on the contact surface between the split molds 9a and 9b and the opening 3 of the infusion device 1 as shown in the third illustration.
Since the groove portion 8 is formed between the contact surface and the engaging portion 7, the tensions T, T hardly act on the engaging portion 7,
Therefore, the engagement portion 7 is prevented from being distorted by the tensions T, T.
また、前記したように係合部７は開口穴3aと溝部８との
間で周方向に略一定の肉厚で形成されるため、上記の成
形後の冷却の際に、該係合部７の各部の収縮率が略一定
となって該係合部７の各部が略均等に収縮するので、該
収縮による係合部７の歪が防止される。Further, as described above, since the engaging portion 7 is formed with a substantially constant thickness in the circumferential direction between the opening hole 3a and the groove portion 8, during the cooling after the above-mentioned molding, the engaging portion 7 is formed. Since the contraction rate of each of the parts is substantially constant and each part of the engaging part 7 contracts substantially uniformly, distortion of the engaging part 7 due to the contraction is prevented.
従って、上記の成形により得られた輸液装置１は、その
係合部７がほとんど歪むことなく所定の形状に形成され
るので、前記栓６を開口部３の開口穴3aに嵌挿して該係
合部７に係合させることにより確実に該開口穴3aが閉塞
され、輸液装置１の使用時に輸血や輸液が漏出すること
はない。Therefore, in the infusion device 1 obtained by the above-mentioned molding, the engaging portion 7 is formed into a predetermined shape with almost no distortion, so that the plug 6 is fitted into the opening hole 3a of the opening portion 3 and the engagement is performed. By engaging the joint portion 7, the opening hole 3a is surely closed, and blood transfusion or infusion does not leak when the infusion device 1 is used.
次に、本考案の輸液装置の他の例を第４図に従って説明
する。第４図は輸液装置１′の底面図である。Next, another example of the infusion device of the present invention will be described with reference to FIG. FIG. 4 is a bottom view of the infusion device 1 '.
この輸液装置１′は、基本的構成は前記輸液装置１と同
一であり、輸液装置１と同一構成の輸液管20a,20aと中
空体21とから成る。This infusion device 1'has the same basic configuration as the infusion device 1, and comprises infusion tubes 20a, 20a and a hollow body 21 having the same configuration as the infusion device 1.
この中空体21の底面部22に設けた開口部23は、前記中空
体４の開口部３において、その両側に張り出した部分を
輸液管5a,5bと平行な面で切断した形状に形成され、該
開口部３の円形の開口穴23aと輸液管20a,20bとの間の位
置でそれぞれ該開口穴23aの周囲に溝部24a,24bが形成さ
れている。そして、該開口穴23aと溝部24a,24bとの間に
は、前記係合部７と同一の内周面を有する係合部25が設
けられ、該係合部25は周方向に略一定の肉厚で形成され
ている。The opening portion 23 provided in the bottom surface portion 22 of the hollow body 21 is formed in a shape in which the portions of the opening portion 3 of the hollow body 4 that project on both sides are cut along a plane parallel to the infusion tubes 5a and 5b. Grooves 24a and 24b are formed around the opening hole 23a at positions between the circular opening hole 23a of the opening 3 and the liquid transfusing tubes 20a and 20b. An engaging portion 25 having the same inner peripheral surface as the engaging portion 7 is provided between the opening hole 23a and the groove portions 24a, 24b, and the engaging portion 25 is substantially constant in the circumferential direction. It is made thick.
かかる輸液装置１′を射出成形により製造する場合に
は、前記と全く同様に成形され、該成形後に左右に延び
る輸液管20a,20bの方向で型開きが行われる。When such an infusion device 1'is manufactured by injection molding, it is molded in exactly the same manner as described above, and after the molding, mold opening is performed in the direction of the infusion tubes 20a, 20b extending in the left and right directions.
この時、溝部24a,24bが、それぞれ係合部25と輸液管20
a,20bとの間に形成されるので、該型開きの際に生じる
該型開き方向の張力は、輸液装置１と同様に係合部25に
直接作用せず、従って、該張力による係合部25の歪が防
止される。At this time, the groove portions 24a and 24b are respectively engaged with the engaging portion 25 and the infusion tube 20.
Since it is formed between a and 20b, the tension in the mold opening direction generated during the mold opening does not directly act on the engaging portion 25 like the infusion device 1, and therefore the engagement by the tension is applied. The distortion of the portion 25 is prevented.
また、係合部25の肉厚は、略一定に形成されているの
で、前記と同様に成形後の冷却の際に、該係合部25の各
部が略均等に収縮し、該収縮による係合部25の歪が防止
される。Further, since the thickness of the engaging portion 25 is formed to be substantially constant, each portion of the engaging portion 25 contracts substantially evenly during cooling after molding as described above, and the contraction due to the contraction occurs. The distortion of the joint portion 25 is prevented.
従って、この輸液装置１′でも、前記栓６により開口部
23の開口穴23aを確実に閉塞することができる。Therefore, even in this infusion device 1 ′, the opening portion is formed by the plug 6.
The opening hole 23a of 23 can be reliably closed.
そして、この輸液装置１′では、その開口部23が前記輸
液装置１の開口部３の両側に張り出した部分を切断した
形状に形成されているので、該輸液装置１に較べてより
小型化されている。Further, in this infusion device 1 ′, the opening 23 is formed in a shape obtained by cutting the portions projecting to both sides of the opening 3 of the infusion device 1, so that the infusion device 1 can be made smaller than the infusion device 1. ing.
（効果） 上記の説明から明らかなように、本考案の輸液装置によ
れば、その中空体の栓で閉塞される開口部の周囲の位置
に溝部を設けたことによって、該輸液装置の射出成形に
おいて型開きをする際に、該栓が係合する該開口部の係
合部に該型開きの方向の張力が直接作用するのが防止さ
れ、該張力による係合部の歪を防止することができる。(Effect) As is apparent from the above description, according to the infusion device of the present invention, the groove is provided around the opening to be closed by the plug of the hollow body, so that the injection molding of the infusion device is achieved. When the mold is opened, the tension in the direction of the mold opening is prevented from directly acting on the engaging portion of the opening with which the plug engages, and the distortion of the engaging portion due to the tension is prevented. You can
さらに、該係合部の肉厚を略一定としたときには、上記
の射出成形後の冷却の際に、該係合部の各部が略均一に
収縮するので、該収縮による該係合部の歪を防止するこ
とができる。Further, when the thickness of the engaging portion is made substantially constant, each portion of the engaging portion shrinks substantially uniformly during the cooling after the injection molding described above, so that the distortion of the engaging portion due to the shrinkage occurs. Can be prevented.
従って、本考案によれば、中空体の開口部を栓により確
実に閉塞することができ、輸血や輸液が漏出することの
ない輸液装置を提供することができる。Therefore, according to the present invention, it is possible to provide an infusion device in which the opening of the hollow body can be surely closed by the plug and the blood transfusion or the infusion does not leak.
第１図及び第２図は本考案の輸液装置の一例の断面図及
び底面図、第３図は該輸液装置の射出成形による製造方
法を説明するための説明図、第４図は本考案の輸液装置
の他の例の底面図である。 1,1′…輸液装置、2,22…底部 3,23…開口部、4,21…中空体 5a,5b,20a,20b…輸液管 ６…栓、7,25…係合部 8,24a,24b…溝部 ９…成形型、Ｔ…張力1 and 2 are a sectional view and a bottom view of an example of the infusion device of the present invention, FIG. 3 is an explanatory view for explaining a manufacturing method of the infusion device by injection molding, and FIG. 4 is of the present invention. It is a bottom view of the other example of the infusion device. 1,1 '... Infusion device, 2,22 ... Bottom part 3,23 ... Opening part, 4,21 ... Hollow body 5a, 5b, 20a, 20b ... Infusion tube 6 ... Plug, 7,25 ... Engaging part 8,24a , 24b ... Groove 9 ... Mold, T ... Tension
Claims (2)
体と、該中空体の内部に連通して該中空体から延出され
た一対の輸液管とから成り、射出成形により成形される
輸液装置において、少なくとも該射出成形における型開
きの際に該型開きの方向の張力が作用する前記開口部の
周囲の位置に溝部を設けたことを特徴とする輸液装置。1. A hollow body having a bottom portion having an opening closed with a stopper, and a pair of infusion pipes communicating with the inside of the hollow body and extending from the hollow body, which are molded by injection molding. The infusion device according to claim 1, wherein a groove is provided at least at a position around the opening where a tension in a direction of the die opening acts at the time of opening the die in the injection molding.
囲に前記溝を設けて該係合部の肉厚を略一定としたこと
を特徴とする請求項１記載の輸液装置。2. The infusion device according to claim 1, wherein the groove is provided around an engaging portion of the opening portion with which the plug engages to make the thickness of the engaging portion substantially constant. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9944089U JPH077969Y2 (en) | 1989-08-25 | 1989-08-25 | Infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9944089U JPH077969Y2 (en) | 1989-08-25 | 1989-08-25 | Infusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0339054U JPH0339054U (en) | 1991-04-16 |
| JPH077969Y2 true JPH077969Y2 (en) | 1995-03-01 |
Family
ID=31648493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9944089U Expired - Lifetime JPH077969Y2 (en) | 1989-08-25 | 1989-08-25 | Infusion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077969Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4489865B2 (en) * | 1999-03-15 | 2010-06-23 | Ｊｆｅ建材株式会社 | Press-type drilling handling device |
| JP4570503B2 (en) * | 2005-04-04 | 2010-10-27 | 本田技研工業株式会社 | How to take out the molded product |
| JP2009066844A (en) * | 2007-09-12 | 2009-04-02 | Sumitomo Heavy Ind Ltd | Molded piece unloading device of injection-molding machine and molded piece unloading method |
| JP6966264B2 (en) * | 2017-08-31 | 2021-11-10 | 日本電産サンキョー株式会社 | Geared motor |
-
1989
- 1989-08-25 JP JP9944089U patent/JPH077969Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0339054U (en) | 1991-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |