JP2021083451A - Catheter tip end shape part molding device, and molding method for catheter tip end shape part - Google Patents

Catheter tip end shape part molding device, and molding method for catheter tip end shape part Download PDF

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JP2021083451A
JP2021083451A JP2019212160A JP2019212160A JP2021083451A JP 2021083451 A JP2021083451 A JP 2021083451A JP 2019212160 A JP2019212160 A JP 2019212160A JP 2019212160 A JP2019212160 A JP 2019212160A JP 2021083451 A JP2021083451 A JP 2021083451A
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molding
catheter
tip
heating
transfer table
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大林 義昌
Yoshimasa Obayashi
義昌 大林
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DAIRIN KK
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/0009Making of catheters or other medical or surgical tubes
    • A61M25/001Forming the tip of a catheter, e.g. bevelling process, join or taper
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/0021Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0041Catheters; Hollow probes characterised by the form of the tubing pre-formed, e.g. specially adapted to fit with the anatomy of body channels

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Abstract

To provide a catheter tip end shape part molding device which elaborates a catheter molding method, has good work efficiency, and high molding accuracy, and a molding method for the catheter tip end shape part.SOLUTION: A catheter tip end shape part molding device includes: a mold type part 3 with thermal conductivity which forms bent molding grooves 2 with which tip end shape parts 1 of a catheter K can be engaged; and a heating part which has heating means and a heating storage having a capacity that can house the mold type part 3 engaged with the tip end shape parts 1. The mold type part 3 arranges a plurality of bent molding grooves 2 in a width direction of a mold part 20 on an upper surface of the mold part 20, and opens and forms an upper part of the bent molding grooves 2.SELECTED DRAWING: Figure 1

Description

本発明は、カテーテルの先端形状部成形装置およびカテーテルの先端形状部の成形方法に係るものである。 The present invention relates to a catheter tip shape molding apparatus and a method for molding a catheter tip shape portion.

従来、公知公報の存在は不知であるが、血管造影用カテーテルやガイディングカテーテルの先端形状を、手技を施す血管形状に合わせる先端形状作成は、カテーテル用チューブに血管形状に合わせた芯金型(バネ線)を1本ずつ挿通し、この先端形状部を所定温度(100℃〜300℃)に加熱したグリセリン溶液を満たしたオイルバス内に所定時間浸漬させ、冷水に浸漬して冷却し、冷却後、カテーテル用チューブから針金型を抜き取って、行っていた。
また、従来、鼻から挿入し、胃や腸、気管などの体内器官にその先端部を所定時間留め置き、体外から栄養剤や酸素を送り込んだり、体内器官から何かを吸引したりするために利用される中が空洞の細長い管を意味する「カテーテル」の代表的な例として、胃や腸に栄養剤を継続的に送り込むための経鼻栄養チューブと呼ばれるものがあり、このカテーテルの一端部の形状を鼻腔内形状に合わせて加熱成形する方法も従来から行われている(特許文献1参照)。
この鼻腔用カテーテルの型成形は、上下一対の型の夫々に溝を形成し、上下何れかの型の溝に鼻腔用カテーテルの一端部を嵌めて、この一方型に他方型を嵌めて、カテーテルを上下方向から挟持し、挟持状態の鼻腔用カテーテルを加熱成形し、成形後型から鼻腔用カテーテルを取り出す成形方法である。
Conventionally, the existence of publicly known publications is unknown, but the tip shape creation that matches the tip shape of an angiography catheter or guiding catheter to the shape of the blood vessel to which the procedure is performed is performed by using a core mold that matches the shape of the blood vessel in the catheter tube. (Spring wire) is inserted one by one, and this tip shape is immersed in an oil bath filled with a glycerin solution heated to a predetermined temperature (100 ° C to 300 ° C) for a predetermined time, immersed in cold water to cool, and cooled. After that, the needle mold was pulled out from the catheter tube and the procedure was performed.
Also, conventionally, it is inserted through the nose and its tip is kept in internal organs such as the stomach, intestines, and trachea for a predetermined time, and it is used to send nutrients and oxygen from outside the body and to suck something from the internal organs. A typical example of a "cauter", which means an elongated tube with a hollow inside, is called a nasal feeding tube for continuously delivering nutrients to the stomach and intestines, and at one end of this catheter. A method of heat-molding the shape according to the shape inside the nasal cavity has also been conventionally performed (see Patent Document 1).
In the molding of the nasal catheter, a groove is formed in each of the pair of upper and lower molds, one end of the nasal catheter is fitted in the groove of either the upper or lower mold, and the other mold is fitted in the other mold to fit the catheter. This is a molding method in which a catheter for a nasal cavity in a sandwiched state is heat-molded, and the catheter for a nasal cavity is taken out from a mold after molding.

特開2018−23690号公報Japanese Unexamined Patent Publication No. 2018-23690

前記公知例のうち前者のものは、カテーテルの先端形状部を、カテーテル用チューブから針金型を抜き取る際に、針金型から抜くときの抵抗により変形し(当業者はこの現象を「なまる」と称している)、冷却後のカテーテルを複数回加熱作業を反復する必要が生じ、作業性が低下するという課題がある。
また、冷却後のカテーテルを複数回加熱作業を反復するのは、所望形状に成形できないためであり、この成形作業には作業者の熟練を要するという課題がある。
また、カテーテルの先端形状部の成形が終了したら、カテーテルに付着しているグリセリンを洗浄除去する必要があり、作業工程が増加するという課題がある。
また、カテーテルの洗浄作業は、純水、エタノール等により行うため、カテーテルの外面および内面の純水、エタノール等の除去作業が面倒であり、その後の衛生面での問題も生じる。
このように、従来のカテーテルの先端形状部の成形は、カテーテル内に血管形状に合わせた針金型を挿入することで行うので、成形作業が面倒であるという課題がある。
前記公知例のうち後者の公知公報記載のものは、一つの型で1本の鼻腔用のカテーテルしか成形できず、成形作業効率が低いという課題がある。
また、上下一対の型で成形するので、上下の溝がずれて鼻腔カテーテルの形状が歪になり、成形精度が低いという課題がある。
本願は、カテーテルの成形方法を工夫し、作業効率がよく、しかも、成型精度の高いカテーテルの先端形状部成形装置およびカテーテルの先端形状部の成形方法を提供するものである。
Among the known examples, the former one deforms the tip shape portion of the catheter due to the resistance when the wire mold is pulled out from the catheter tube when the needle mold is pulled out from the catheter tube (those skilled in the art describe this phenomenon as "blunting". (It is called), it becomes necessary to repeat the heating work of the catheter after cooling a plurality of times, and there is a problem that workability is lowered.
Further, the reason why the cooling operation of the catheter is repeated a plurality of times is that it cannot be formed into a desired shape, and there is a problem that this forming operation requires the skill of an operator.
Further, after the molding of the tip shape portion of the catheter is completed, it is necessary to wash and remove the glycerin adhering to the catheter, which causes a problem that the work process is increased.
Further, since the catheter cleaning work is performed with pure water, ethanol, etc., it is troublesome to remove the pure water, ethanol, etc. on the outer and inner surfaces of the catheter, which causes a problem in hygiene thereafter.
As described above, since the molding of the tip shape portion of the conventional catheter is performed by inserting a wire mold matching the shape of the blood vessel into the catheter, there is a problem that the molding work is troublesome.
Among the above-mentioned known examples, the latter one described in the public publication has a problem that only one catheter for the nasal cavity can be molded with one mold, and the molding work efficiency is low.
Further, since molding is performed by a pair of upper and lower molds, there is a problem that the upper and lower grooves are displaced and the shape of the nasal catheter is distorted, resulting in low molding accuracy.
The present application provides a catheter tip shape molding apparatus and a catheter tip shape molding method by devising a catheter molding method, which has good work efficiency and high molding accuracy.

請求項1の発明は、 カテーテルKの先端形状部1を嵌合させる屈曲成形溝2を形成した熱伝導性を有する成形型部3と、先端形状部1を嵌合させた成形型部3を収容しうる容積を有する加温庫25および加熱手段を有する加温部4とを備え、成形型部3は、金型部20の上面に、屈曲成形溝2を金型部20の幅方向に複数並設すると共に、屈曲成形溝2の上方を開放して形成したカテーテルの先端形状部成形装置としたものである。
請求項2の発明は、屈曲成形溝2は、カテーテルKの先端形状部1の径より深い溝形状に形成したカテーテルの先端形状部成形装置としたものである。
請求項3の発明は、屈曲成形溝2は前記成形型部3の金型部20に形成し、金型部20はベース部21上に着脱交換自在に載置固定して形成したカテーテルの先端形状部成形装置としたものである。
請求項4の発明は、屈曲成形溝2にカテーテルKの先端形状部1を嵌合させた成形型部3を載置した移送テーブル42を手動または自動で移送する移送手段40を有する移送台41上の終端部に、前記加温部4を設け、移送台41の移送テーブル42の移送方向の前後中間所定位置には、成形型部3およびカテーテルKの先端形状部1を冷却する冷却部6を上下自在に設けたカテーテルの先端形状部成形装置としたものである。
請求項5の発明は、成形型部3は移送テーブル42とは一体または別体で形成する構成とすると共に、成形型部3のみが加温部4の加温庫25内に挿入される構成としたカテーテルの先端形状部成形装置としたものである。
請求項6の発明は、移送テーブル42を移送する移送手段40は移送テーブル42を往復移動可能に構成したカテーテルの先端形状部成形装置としたものである。
請求項7の発明は、加温部4の加温庫25内に設けた載置台28は、移送手段40が移送する移送テーブル42の前端の成形型部3と略同じ高さに配置したカテーテルの先端形状部成形装置としたものである。
請求項8の発明は、冷却部6は、冷却部6の移送テーブル42の移送方向上手側に、一つの移送テーブル42の長さを有するように、所定間隔を有して移送台41に設けたカテーテルの先端形状部成形装置としたものである。
請求項9の発明は、予め血管形状に合わせて形成した屈曲成形溝2を成形型部3の同一平面上に複数並設して形成し、成形型部3の各屈曲成形溝2にカテーテルKの先端形状部1を嵌合させ、先端形状部1を嵌合させた成形型部3を加温部4内に搬入して所定温度かつ所定時間加熱し、加熱後、カテーテルKの先端形状部1と成形型部3を冷却し、成形型部3の各屈曲成形溝2からカテーテルKの先端形状部1を取り外して成形するカテーテルの先端形状部の成形方法としたものである。
請求項10の発明は、カテーテルKの先端形状部1を嵌合させた成形型部3を、移送テーブル42を介して移送する移送台41の終端側に加温部4を設け、移送台41の移送テーブル42の移送方向の前後中間所定位置に上下自在に冷却部6を設け、成形型部3を冷却しうる冷却部6を、移送台41の移送手段40による成形型部3の移送路より下方の待機位置に下降待機させ、成形型部3の屈曲成形溝2にカテーテルKの先端形状部1を嵌合させ、カテーテルKの先端形状部1を嵌合させた成形型部3を、移送テーブル42を介して移送台41の移送手段40により往路移送させて移送台41上の加温部4内に搬入し、加温部4内にて成形型部3ごとカテーテルKの先端形状部1を所定温度で所定時間加熱し、加熱後、成形型部3を、移送台41の移送方向の前後中間所定位置の冷却部6まで、移送テーブル42を介して移送手段40により復路移送させ、成形型部3が冷却部6の下方に至ると、下降待機させていた冷却部6を成形型部3の冷却可能高さ位置まで上昇させて成形型部3ごとカテーテルKの先端形状部1を冷却し、冷却後、成形型部3の各屈曲成形溝2からカテーテルKの先端形状部1を取り外して成形するカテーテルの先端形状部の成形方法としたものである。
The invention of claim 1 is a molding die portion 3 having thermal conductivity formed by forming a bending molding groove 2 into which the tip shape portion 1 of the catheter K is fitted, and a molding die portion 3 into which the tip shape portion 1 is fitted. A heating chamber 25 having a capacity that can be accommodated and a heating portion 4 having a heating means are provided, and the molding portion 3 has a bent molding groove 2 on the upper surface of the mold portion 20 in the width direction of the mold portion 20. A plurality of catheter tip-shaped portions are formed by arranging them side by side and opening the upper part of the bending forming groove 2.
According to the second aspect of the present invention, the bending molding groove 2 is a device for forming the tip shape portion of the catheter, which is formed in a groove shape deeper than the diameter of the tip shape portion 1 of the catheter K.
According to the third aspect of the present invention, the bending molding groove 2 is formed in the mold portion 20 of the molding mold portion 3, and the mold portion 20 is placed and fixed on the base portion 21 so as to be detachably replaceable and fixed at the tip of the catheter. It is a shape part molding device.
The invention of claim 4 is a transfer table 41 having a transfer means 40 for manually or automatically transferring a transfer table 42 on which a molding portion 3 in which a tip-shaped portion 1 of a catheter K is fitted is placed in a bending molding groove 2. The heating unit 4 is provided at the upper terminal portion, and the molding unit 3 and the tip-shaped portion 1 of the catheter K are cooled at predetermined positions in the front-rear and intermediate positions of the transfer table 42 of the transfer table 41 in the transfer direction. Is a device for forming the tip shape of a catheter, which is provided up and down freely.
The invention of claim 5 has a configuration in which the molding mold portion 3 is formed integrally or separately from the transfer table 42, and only the molding mold portion 3 is inserted into the heating chamber 25 of the heating portion 4. This is a device for forming the tip shape of the catheter.
According to the sixth aspect of the present invention, the transfer means 40 for transferring the transfer table 42 is a catheter tip shape forming device having the transfer table 42 reciprocally movable.
According to the invention of claim 7, the mounting table 28 provided in the heating chamber 25 of the heating unit 4 is a catheter arranged at substantially the same height as the molded portion 3 at the front end of the transfer table 42 to be transferred by the transfer means 40. It is a device for forming the tip shape of the above.
In the invention of claim 8, the cooling unit 6 is provided on the transfer table 41 at a predetermined interval so as to have the length of one transfer table 42 on the upper side of the transfer table 42 of the cooling unit 6 in the transfer direction. It is a device for forming the tip shape of a catheter.
In the invention of claim 9, a plurality of bending molding grooves 2 formed in advance according to the shape of a blood vessel are formed side by side on the same plane of the molding mold portion 3, and a catheter K is formed in each bending molding groove 2 of the molding mold portion 3. The tip shape portion 1 of the above is fitted, and the molding mold portion 3 into which the tip shape portion 1 is fitted is carried into the heating portion 4 and heated at a predetermined temperature for a predetermined time. 1 and the molding die portion 3 are cooled, and the tip shape portion 1 of the catheter K is removed from each bending molding groove 2 of the molding die portion 3 to form a molding method of the tip shape portion of the catheter.
In the invention of claim 10, a heating portion 4 is provided on the terminal side of the transfer table 41 for transferring the molded portion 3 to which the tip shape portion 1 of the catheter K is fitted via the transfer table 42, and the transfer table 41 is provided. The cooling unit 6 is vertically provided at a predetermined position in the front-rear and intermediate positions in the transfer direction of the transfer table 42, and the cooling unit 6 capable of cooling the molding unit 3 is provided in the transfer path of the molding unit 3 by the transfer means 40 of the transfer table 41. The molding mold portion 3 in which the tip shape portion 1 of the catheter K is fitted into the bending molding groove 2 of the molding mold portion 3 and the tip shape portion 1 of the catheter K is fitted is placed in a lower standby position. It is transferred outbound by the transfer means 40 of the transfer table 41 via the transfer table 42 and carried into the heating portion 4 on the transfer table 41, and the tip shape portion of the catheter K together with the molding portion 3 is carried in the heating portion 4. 1 is heated at a predetermined temperature for a predetermined time, and after heating, the molding mold portion 3 is returned to the cooling portion 6 at a predetermined position in the front-rear intermediate position in the transfer direction of the transfer table 41 by the transfer means 40 via the transfer table 42. When the molding part 3 reaches the lower part of the cooling part 6, the cooling part 6 which has been kept waiting for lowering is raised to the coolable height position of the molding part 3, and the tip shape part 1 of the catheter K together with the molding part 3 is moved. This is a method for molding the tip-shaped portion of the catheter, which is formed by removing the tip-shaped portion 1 of the catheter K from each bending molding groove 2 of the molding mold portion 3 after cooling and cooling.

請求項1の発明では、熱伝導性を有する成形型部3の金型部20の上面に、金型部20の幅方向に屈曲成形溝2を複数並設すると共に、屈曲成形溝2の上方を開放して形成しているので、一度に複数のカテーテルKの先端形状部1の成形加工を行うことができて作業効率を向上させることができ、また、カテーテルKの先端形状部1を屈曲成形溝2に嵌合させるだけでよいので、成形精度を確保できて作業効率を向上させることができ、また、屈曲成形溝2は金型部20の上面に屈曲成形溝2を形成し、屈曲成形溝2の上方は開放構成としているので、この点でも、成形精度を確保できて作業効率を向上させることができる。
請求項2の発明では、屈曲成形溝2は、カテーテルKの先端形状部1の径より深い溝形状に形成しているので、カテーテルKの先端形状部1を確実に屈曲させた状態で保持でき、成形精度を確保できて作業効率を向上させることができる。
請求項3の発明では、屈曲成形溝2は成形型部3の金型部20に形成し、金型部20はベース部21上に着脱交換自在に載置固定しているので、種々の形状のカテーテルの先端形状部を廉価に成形できる。
請求項4の発明では、成形型部3を載置した移送テーブル42を移送する移送手段40を有する移送台41上に、加温部4を設け、加温部4の移送方向下手側に前記成形型部3を冷却する冷却部6を設けているので、自動または手動操作により移送テーブル42を移送させて、カテーテルKの先端形状部1を成形型部3ごとに加熱冷却ができ、成形作業を容易にでき、作業効率を向上させることができる。
請求項5の発明では、成形型部3は移送テーブル42とは一体または別体で形成する構成とすると共に、成形型部3のみが加温部4の加温庫25内に挿入される構成としているので、カテーテルKの先端形状部1の加熱成形を容易にできる。
請求項6の発明では、移送テーブル42を移送する移送手段40は移送テーブル42を往復移動可能に構成ているので、移送台41の終端側に加温部4を設け、移送台41の前後中間所定位置に冷却部6を設けることができ、移送台41の長さを短くしてコンパクトなカテーテルの先端形状部成形装置を提供できる。
請求項7の発明では、加温部4の加温庫25内に設けた載置台28は、移送手段40が移送する移送テーブル42の前端の成形型部3と略同じ高さに配置しているので、加温部4の開閉シャッター26を開けた状態で移送テーブル42を移送すると、加温部4の加温庫25内に設けた載置台28上に移送テーブル42の前端の成形型部3が載置され、カテーテルKの先端形状部1の移送作業を容易にでき、その結果、カテーテルKの先端形状部1の成形作業全般を容易にすることができる。
請求項8の発明では、冷却部6は、冷却部6の移送テーブル42の移送方向上手側に、一つの移送テーブル42の長さを有するように、所定間隔を有して移送台41に設けているので、移送テーブル42の成形型部3を、冷却部6の上方に位置させたとき、移送テーブル42の後端は移送台1の始端部上に位置して移送台1により支持することができ、冷却部6上の移送テーブル42の成形型部3を安定姿勢で支持することができ、冷却効率を向上させられる。
請求項9の発明では、予め血管形状に合わせて形成した屈曲成形溝2を成形型部3の同一平面上に複数並設して形成し、この成形型部3の各屈曲成形溝2にカテーテルKの先端形状部1を嵌合させ、先端形状部1を嵌合させた成形型部3を加温部4内に搬入して所定温度かつ所定時間で加熱し、加熱後、カテーテルKの先端形状部1と成形型部3を冷却し、成形型部3の各屈曲成形溝2からカテーテルKの先端形状部1を取り外して成形するので、一度に複数のカテーテルKの先端形状部1の成形加工を行うことができて作業効率を向上させることができ、また、カテーテルKの先端形状部1を屈曲成形溝2に嵌合させるだけでよいので、成形精度を確保できて作業効率を向上させることができ、また、屈曲成形溝2は金型部20の上面に屈曲成形溝2を形成し、屈曲成形溝2の上方は開放構成としているので、この点でも、成形精度を確保できて作業効率を向上させることができる。
また、本発明の成形方法によれば、成形型部3の各屈曲成形溝2にカテーテルKの先端形状部1を嵌合させだけでよく、この成形作業に作業者の熟練を要せず、所定経験を積んだ作業者であれば誰しも成形作業を簡便に行うことができる。
請求項10の発明では、移送台41の往路移送でカテーテルKの先端形状部1の加熱成形を行え、移送台41の復路移送でカテーテルKの先端形状部1の冷却成形による成形保持加工ができるので、1台の移送台41でカテーテルKの先端形状部1の成形作業全般を完結させることができ、成形作業全般を容易にすることができる。
In the invention of claim 1, a plurality of bending molding grooves 2 are arranged side by side in the width direction of the mold portion 20 on the upper surface of the mold portion 20 of the molding die portion 3 having thermal conductivity, and above the bending molding groove 2. Is formed so that the tip shape portions 1 of a plurality of catheters K can be molded at one time to improve work efficiency, and the tip shape portions 1 of the catheter K can be bent. Since it is only necessary to fit the molding groove 2, the molding accuracy can be ensured and the work efficiency can be improved, and the bending molding groove 2 forms the bending molding groove 2 on the upper surface of the mold portion 20 and is bent. Since the upper part of the forming groove 2 is open, the forming accuracy can be ensured and the working efficiency can be improved in this respect as well.
In the invention of claim 2, since the flexion molding groove 2 is formed in a groove shape deeper than the diameter of the tip shape portion 1 of the catheter K, the tip shape portion 1 of the catheter K can be reliably held in a bent state. , Molding accuracy can be ensured and work efficiency can be improved.
In the invention of claim 3, since the bending molding groove 2 is formed in the mold portion 20 of the molding mold portion 3 and the mold portion 20 is placed and fixed on the base portion 21 so as to be removable and replaceable, various shapes are formed. The tip shape of the catheter can be molded at low cost.
In the invention of claim 4, the heating unit 4 is provided on the transfer table 41 having the transfer means 40 for transferring the transfer table 42 on which the molding unit 3 is placed, and the heating unit 4 is provided on the lower side in the transfer direction of the heating unit 4. Since the cooling unit 6 for cooling the molding mold portion 3 is provided, the transfer table 42 can be transferred automatically or manually, and the tip-shaped portion 1 of the catheter K can be heated and cooled for each molding mold portion 3, and the molding operation can be performed. Can be easily performed and work efficiency can be improved.
In the invention of claim 5, the molding die 3 is formed integrally or separately from the transfer table 42, and only the molding die 3 is inserted into the heating chamber 25 of the heating section 4. Therefore, heat molding of the tip shape portion 1 of the catheter K can be easily performed.
In the invention of claim 6, since the transfer means 40 for transferring the transfer table 42 is configured so that the transfer table 42 can be reciprocated, a heating unit 4 is provided on the terminal side of the transfer table 41, and the front and rear intermediate of the transfer table 41. The cooling unit 6 can be provided at a predetermined position, and the length of the transfer table 41 can be shortened to provide a compact catheter tip shape forming device.
In the invention of claim 7, the mounting table 28 provided in the heating chamber 25 of the heating unit 4 is arranged at substantially the same height as the molding mold portion 3 at the front end of the transfer table 42 to be transferred by the transfer means 40. Therefore, when the transfer table 42 is transferred with the opening / closing shutter 26 of the heating unit 4 opened, the molding mold portion at the front end of the transfer table 42 is placed on the mounting table 28 provided in the heating chamber 25 of the heating unit 4. 3 is placed, and the transfer work of the tip shape portion 1 of the catheter K can be facilitated, and as a result, the overall molding work of the tip shape portion 1 of the catheter K can be facilitated.
In the invention of claim 8, the cooling unit 6 is provided on the transfer table 41 at a predetermined interval so as to have the length of one transfer table 42 on the upper side of the transfer table 42 of the cooling unit 6 in the transfer direction. Therefore, when the molding mold portion 3 of the transfer table 42 is positioned above the cooling portion 6, the rear end of the transfer table 42 is located on the start end portion of the transfer table 1 and is supported by the transfer table 1. The molding portion 3 of the transfer table 42 on the cooling portion 6 can be supported in a stable posture, and the cooling efficiency can be improved.
In the invention of claim 9, a plurality of bending molding grooves 2 formed in advance according to the shape of the blood vessel are formed side by side on the same plane of the molding mold portion 3, and a catheter is formed in each bending molding groove 2 of the molding mold portion 3. The tip shape portion 1 of K is fitted, and the molding mold portion 3 into which the tip shape portion 1 is fitted is carried into the heating portion 4 and heated at a predetermined temperature and for a predetermined time. After heating, the tip of the catheter K is fitted. Since the shape portion 1 and the molding mold portion 3 are cooled and the tip shape portion 1 of the catheter K is removed from each bending molding groove 2 of the molding mold portion 3 for molding, the tip shape portions 1 of a plurality of catheters K are molded at one time. Machining can be performed to improve work efficiency, and since it is only necessary to fit the tip shape portion 1 of the catheter K into the bending molding groove 2, molding accuracy can be ensured and work efficiency is improved. Further, since the bending forming groove 2 has a bending forming groove 2 formed on the upper surface of the mold portion 20 and the upper part of the bending forming groove 2 has an open configuration, the forming accuracy can be ensured also in this respect. Efficiency can be improved.
Further, according to the molding method of the present invention, it is only necessary to fit the tip shape portion 1 of the catheter K into each bending molding groove 2 of the molding mold portion 3, and this molding operation does not require the skill of an operator. Any worker who has a predetermined experience can easily perform the molding work.
In the invention of claim 10, the tip shape portion 1 of the catheter K can be heat-molded by the outward transfer of the transfer table 41, and the molding holding process by the cooling molding of the tip shape portion 1 of the catheter K can be performed by the return transfer of the transfer table 41. Therefore, one transfer table 41 can complete the entire molding operation of the tip shape portion 1 of the catheter K, and the overall molding operation can be facilitated.

カテーテルと成形型部の組立状態の概略斜視図。Schematic perspective view of the assembled state of the catheter and the molded part. 成形型部の屈曲成形溝にカテーテルの先端形状部を嵌合させた状態の斜視図。The perspective view of the state in which the tip shape part of a catheter is fitted in the bending molding groove of a molding mold part. (A)屈曲成形溝にカテーテルの先端形状部を嵌合させた状態の断面図。 (B)他の実施形態の屈曲成形溝にカテーテルの先端形状部を嵌合させた状態の断面図。(A) A cross-sectional view of a state in which the tip-shaped portion of the catheter is fitted into the bending molding groove. (B) A cross-sectional view of a state in which the tip-shaped portion of the catheter is fitted into the flexion molding groove of another embodiment. (A)冠動脈用のカテーテルの先端形状部の正面図。 (B)脳血管用のカテーテルの先端形状部の正面図。 (C)腹腔用のカテーテルの先端形状部の正面図。(A) Front view of the tip shape portion of a catheter for coronary arteries. (B) Front view of the tip shape portion of a catheter for cerebrovascular disease. (C) Front view of the tip shape portion of the catheter for the abdominal cavity. カテーテルとカテーテルの先端形状部の留置状態の説明図。Explanatory drawing of the catheter and the indwelling state of the tip shape part of the catheter. カテーテルおよび成形型部の他の実施形態の斜視図。Perspective view of the catheter and other embodiments of the molded part. 加温部の斜視図。Perspective view of the heating part. 成形装置の斜視図。Perspective view of the molding apparatus. 成形装置の側面図。Side view of the molding apparatus. 成形装置の背面図。Rear view of the molding machine. 成形装置の冷却部付近の背面図。The rear view near the cooling part of a molding apparatus. 加温部に成形型部を搬入した状態の側面図。The side view of the state where the molding part was carried into the heating part. 冷却部上に成形型部が位置する状態の側面図。Side view of the state where the molding part is located on the cooling part.

本発明の一実施形態を図面を用いて説明する。なお、以下に挙げる実施形態は例示であり、本発明は以下の実施形態の構成に限定されない。
現在、医療現場において、カテーテル、チューブ、カニューレなどと呼ばれる中が空洞の細長い管が様々な場面で利用され、血管内にカテーテルを差し込んで、造影剤を注入して血管造影検査等が行われており、本発明は、心臓カテーテル検査等に使用されるカテーテルKの先端形状部1を、患者の血管形状に合わせて屈曲成形するものである。
An embodiment of the present invention will be described with reference to the drawings. The embodiments listed below are examples, and the present invention is not limited to the configurations of the following embodiments.
Currently, in the medical field, elongated tubes with a hollow inside called catheters, tubes, cannulas, etc. are used in various situations, and catheters are inserted into blood vessels, contrast media are injected, and angiography examinations are performed. Therefore, in the present invention, the tip shape portion 1 of the catheter K used for cardiac catheterization or the like is flexed and molded according to the shape of a blood vessel of a patient.

本発明は、予め血管形状に合わせて形成した屈曲成形溝2を成形型部3の同一面(上面)に複数並設して形成し、成形型部3の各屈曲成形溝2に熱可塑性樹脂により形成したカテーテルKの先端形状部1を嵌合(嵌入)させ、この成形型部3を加温部4内に搬入し、加温部4内にて所定温度かつ所定時間で加熱(加温)し、加熱後、カテーテルKの先端形状部1と成形型部3を任意の手段(方法)で冷却して成形する。
そのため、先端形状部1を屈曲成形溝2から取り外すのが容易であり、取外しの際の形状変化も生じない。
In the present invention, a plurality of bending molding grooves 2 formed in advance according to the shape of a blood vessel are formed side by side on the same surface (upper surface) of the molding portion 3, and a thermoplastic resin is formed in each bending molding groove 2 of the molding portion 3. The tip-shaped portion 1 of the catheter K formed by the above method is fitted (fitted), and the molded portion 3 is carried into the heating portion 4 and heated (heated) in the heating portion 4 at a predetermined temperature and for a predetermined time. ), And after heating, the tip shape portion 1 and the molding mold portion 3 of the catheter K are cooled by an arbitrary means (method) and molded.
Therefore, it is easy to remove the tip shape portion 1 from the bending molding groove 2, and the shape does not change at the time of removal.

また、加熱工程は加温部4の加熱空間内に先端形状部1と成形型部3(屈曲成形溝2)を入れるだけで良く、グリセリン等に浸漬して行う加熱工程を必要としないので、洗浄工程を省略でき、成形工程を簡便にするだけでなく、衛生面の問題も生じない。
また、成形型部3は屈曲成形溝2の溝底に対向する上方は開放構成としているので、成形精度の高い先端形状部1を有するカテーテルKの成形方法を提供できる。
すなわち、従来の上下の型で鼻腔用カテーテルを挟持する成形方法では、上下の型のそれぞれに複数の屈曲成形溝2を形成する必要があり、この場合、上下の屈曲成形溝2にずれが発生し、結果、加熱斑が生じ、成型精度が低下するが、本発明では、成形型部3は屈曲成形溝2の溝底に対向する上方向は開放構成なので、このような問題は生じない。
Further, the heating step only requires inserting the tip shape portion 1 and the molding mold portion 3 (bending molding groove 2) into the heating space of the heating portion 4, and does not require a heating step of immersing in glycerin or the like. The cleaning process can be omitted, which not only simplifies the molding process but also causes no hygiene problems.
Further, since the molding die portion 3 has an open structure above the bending molding groove 2 facing the groove bottom, it is possible to provide a molding method for the catheter K having the tip shape portion 1 having high molding accuracy.
That is, in the conventional molding method in which the nasal catheter is sandwiched between the upper and lower molds, it is necessary to form a plurality of bending molding grooves 2 in each of the upper and lower molds, and in this case, the upper and lower bending molding grooves 2 are displaced. As a result, heating spots occur and the molding accuracy is lowered. However, in the present invention, since the molding die portion 3 has an open structure in the upward direction facing the groove bottom of the bent molding groove 2, such a problem does not occur.

具体的な成形方法を示すと、まず、カテーテルKが準備される。
この場合、基本的には、医師や看護師などの医療従事者が後述する成形装置5を用いることで本方法が実行される。但し、本方法の実行主体は、医療従事者のみに制限されず、本方法の実行主体をユーザーと表記する。
外径及び全長が異なる複数種のカテーテルKを予め用意し、また、カテーテルKの先端形状部1を挿入留置する血管形状に合わせた成形型部3の屈曲成形溝2を複数種類用意し、ユーザーは、このように準備されたカテーテルKを屈曲させながら成形型部3の屈曲成形溝2に嵌める(図1、図2)。
To show a specific molding method, first, the catheter K is prepared.
In this case, basically, this method is executed by a medical worker such as a doctor or a nurse using a molding apparatus 5 described later. However, the executor of this method is not limited to medical professionals, and the executor of this method is referred to as a user.
A plurality of types of catheters K having different outer diameters and total lengths are prepared in advance, and a plurality of types of bending molding grooves 2 of the molding mold portion 3 matching the shape of the blood vessel into which the tip shape portion 1 of the catheter K is inserted and placed are prepared. Fits the catheter K prepared in this way into the bending groove 2 of the molding die 3 while bending it (FIGS. 1 and 2).

このとき、ユーザーは、例えば、そのカテーテルKを患者の大腿動脈あるいは腕頭動脈(橈骨動脈)から体内に挿管した際に、ジャドキンス左の場合は、先端形状部1の先端が左冠状動脈の入口付近に位置に留置するに適していると予測される血管形状に合わせて形成した屈曲成形溝2に、カテーテルKの先端形状部1を収める。
次に、ユーザーは、加温部4の電源を入れ、加温部4により成形型部3およびカテーテルKの先端形状部1を加熱する(図7)。加温部4が加温されると、成形型部3の熱伝導性により、屈曲成形溝2の表面を介してカテーテルKが屈曲された状態で加熱される。
At this time, for example, when the catheter K is infused into the body from the femoral artery or the radial artery (radial artery) of the patient, in the case of the left side of Judkins, the tip of the tip shape portion 1 is the entrance of the left coronary artery. The tip-shaped portion 1 of the catheter K is housed in the flexion-formed groove 2 formed according to the shape of the blood vessel that is predicted to be suitable for placement in the vicinity.
Next, the user turns on the power of the heating unit 4, and the heating unit 4 heats the molding portion 3 and the tip-shaped portion 1 of the catheter K (FIG. 7). When the heating portion 4 is heated, the catheter K is heated in a bent state through the surface of the bending molding groove 2 due to the thermal conductivity of the molding portion 3.

そして、外径や材質などのようなカテーテルKの属性に対応する所定時間、成形型部3は加熱される。この所定時間は、加工対象となるカテーテルKのタイプに応じて、予め決められている。その加熱時間は、カテーテルKが軟化し屈曲した状態で成形されるように決定される。その加熱時間は、加温部4の性能も更に加味して決定されてもよい。例えば、加温部4が最高温度に達するまでに或る程度の時間を要する場合には、その時間も考慮して加熱時間が決められてもよい。
所定時間加熱されると、加温部4による加熱を終了させる。例えば、ユーザーは、加温部4の電源をOFFすることにより、加熱を終了させる。
Then, the molding portion 3 is heated for a predetermined time corresponding to the attributes of the catheter K such as the outer diameter and the material. This predetermined time is predetermined according to the type of the catheter K to be processed. The heating time is determined so that the catheter K is formed in a softened and bent state. The heating time may be determined in consideration of the performance of the heating unit 4. For example, when it takes a certain amount of time for the heating unit 4 to reach the maximum temperature, the heating time may be determined in consideration of that time.
When it is heated for a predetermined time, the heating by the heating unit 4 is terminated. For example, the user ends the heating by turning off the power of the heating unit 4.

加熱が終了すると、ユーザーは、成形型部3を加温部4から取り出す。
その後、カテーテルKを自然冷却または冷却部6により冷却することにより、カテーテルKは、屈曲状態を維持したまま成形され、利用可能となる。
利用可能となったカテーテルKの先端形状部1は、成形型部3の屈曲成形溝2に嵌合していない基部側の本体部分10を持って持ち上げる等の任意の方法で屈曲成形溝2から取り出すと、カテーテルKの先端形状部1の成形加工工程は終了する。
When the heating is completed, the user takes out the molding part 3 from the heating part 4.
After that, the catheter K is naturally cooled or cooled by the cooling unit 6, so that the catheter K is formed and can be used while maintaining the bent state.
The tip shape portion 1 of the catheter K that has become available can be lifted from the bending molding groove 2 by an arbitrary method such as holding and lifting the main body portion 10 on the base side that is not fitted in the bending molding groove 2 of the molding mold portion 3. When taken out, the molding process of the tip shape portion 1 of the catheter K is completed.

次に、前記成形型部3について説明する。成形型部3の素材は、銅、アルミニウム、鉄、ステンレス鋼、チタンなどの熱伝導率の高い金属又は合金である。成形型部3の素材には、腐食し難く、熱伝導性が高く、かつ加工がし易いという理由からアルミニウムが選択されることが好ましい。但し、成形型部3の素材は、熱伝導性を有していればよく、それらに限定されない。 Next, the molding mold portion 3 will be described. The material of the molding die portion 3 is a metal or alloy having high thermal conductivity such as copper, aluminum, iron, stainless steel, and titanium. Aluminum is preferably selected as the material of the molding die 3 because it is not easily corroded, has high thermal conductivity, and is easy to process. However, the material of the molding die portion 3 may have thermal conductivity and is not limited thereto.

成形型部3には、カテーテルKの先端形状部1を収めるための屈曲成形溝2を形成する。屈曲成形溝2は、成形型部3の表裏側の何れか一面となる溝形成面3Aに、凹むように形成し、屈曲成形溝2の溝底に対向(対面)する側は成形型部3の溝形成面3Aの上面より上方の開放空間3Bとして形成する(図3)。
したがって、成形型部3を加温部4内に搬入すると、加温部4の熱気空間が溝形成面3Aの上面より上方の開放空間3Bとなって、成形型部3全体が加温され、カテーテルKの先端形状部1を加熱成形させる。
A bending molding groove 2 for accommodating the tip shape portion 1 of the catheter K is formed in the molding mold portion 3. The bending molding groove 2 is formed so as to be recessed in the groove forming surface 3A which is one of the front and back sides of the molding mold portion 3, and the side facing (facing) the groove bottom of the bending molding groove 2 is the molding mold portion 3. It is formed as an open space 3B above the upper surface of the groove forming surface 3A (FIG. 3).
Therefore, when the molding part 3 is carried into the heating part 4, the hot air space of the heating part 4 becomes an open space 3B above the upper surface of the groove forming surface 3A, and the entire molding part 3 is heated. The tip shape portion 1 of the catheter K is heat-molded.

すなわち、屈曲成形溝2は、成形型部3の一面形状の溝形成面3Aのみに、凹むように形成し、従来のような上下一対の型部材で挟持して加熱成形するのではないので、屈曲成形溝2へのカテーテルKの先端形状部1の嵌合作業が容易でかつ正確に行える。
屈曲成形溝2は、カテーテルKの先端形状部1の外径と略同一か外径より深い溝形状にて形成されている(図3)。
すなわち、屈曲成形溝2の幅方向断面は、カテーテルKの外径を直径とする半円状またはU型形状あるいは断面縦向き「コの字」形状に形成する。
That is, the bending molding groove 2 is formed so as to be recessed only on the one-sided groove forming surface 3A of the molding mold portion 3, and is not sandwiched between a pair of upper and lower mold members as in the conventional case and heat-molded. The fitting operation of the tip shape portion 1 of the catheter K into the bending molding groove 2 can be easily and accurately performed.
The flexion-molded groove 2 is formed in a groove shape that is substantially the same as or deeper than the outer diameter of the tip shape portion 1 of the catheter K (FIG. 3).
That is, the widthwise cross section of the bending groove 2 is formed in a semicircular or U-shaped shape having the outer diameter of the catheter K as the diameter, or a "U-shaped" cross section in the vertical direction.

そのため、カテーテルKの外周面の全周を効率的に加熱することができ、屈曲成形溝2の形状に合わせてカテーテルKを確実に曲げ加工することができる。
但し、屈曲成形溝2の底面は、カテーテルKの外周面の全周を必ずしも覆う必要はなく、加熱工程中に先端形状部1の形状を保持する深さであれば良い。
更に、屈曲成形溝2は、先端形状部1の径より深い溝とし、屈曲成形溝2の深さにより、屈曲成形溝2の深さ方向に先端形状部1を3次元的形状の曲げ加工も可能となる。
Therefore, the entire circumference of the outer peripheral surface of the catheter K can be efficiently heated, and the catheter K can be reliably bent according to the shape of the bending molding groove 2.
However, the bottom surface of the bent molding groove 2 does not necessarily have to cover the entire circumference of the outer peripheral surface of the catheter K, and may be deep enough to maintain the shape of the tip shape portion 1 during the heating process.
Further, the bending forming groove 2 is a groove deeper than the diameter of the tip shape portion 1, and the tip shape portion 1 can be bent in a three-dimensional shape in the depth direction of the bending forming groove 2 depending on the depth of the bending forming groove 2. It will be possible.

すなわち、屈曲成形溝2はカテーテルKの先端形状部1を留置する箇所の血管形状を2次元的に形成したものであり、形状は任意であり、前記した冠動脈のジャドキンス左に使用するカテーテルKの先端形状部1の例を示すと、先端を本体部分10に対して略交差するように屈曲させた先端水平部15とし、先端水平部15の基部側を屈曲させて緩く弯曲させた第1弯曲部(プライマリーカーブ)16とし、弯曲部16の基部側は半円弧状に弯曲させた第2弯曲部17とし、第2弯曲部17にカテーテルKの本体部分10を嵌合させる直線部18を連設している(図4A)。 That is, the flexion molding groove 2 is a two-dimensional shape of the blood vessel at the place where the tip shape portion 1 of the catheter K is placed, and the shape is arbitrary. As an example of the tip shape portion 1, the tip horizontal portion 15 is bent so that the tip substantially intersects the main body portion 10, and the base side of the tip horizontal portion 15 is bent and gently curved. A portion (primary curve) 16 is provided, the base side of the curved portion 16 is a second curved portion 17 that is curved in a semicircular shape, and a straight portion 18 for fitting the main body portion 10 of the catheter K is connected to the second curved portion 17. It is installed (Fig. 4A).

同様に、図4Aには冠動脈のジャドキンス右およびピッグテールのカテーテルKの先端形状部1を例示し、また、図4Bでは脳血管のシモンズあるいはヘッドハンターのカテーテルKの先端形状部1を例示し、図4Cでは腹腔用のシェファードフックおよびコブラのカテーテルKの先端形状部1を例示しており、これらのカテーテルKの先端形状部1に合わせるための屈曲成形溝2を予め形成しておけばよい。
屈曲成形溝2は、成形型部3の金型部20の幅方向に複数並設する(図1)。本実施形態では5個の屈曲成形溝2を並設しているが、それ以上でもよい。
Similarly, FIG. 4A illustrates the tip-shaped portion 1 of the catheter K on the right side of the coronary artery and the pigtail, and FIG. 4B illustrates the tip-shaped portion 1 of the catheter K of the cerebrovascular Simmons or the head hunter. In 4C, the tip shape portion 1 of the catheter K of the shepherd hook for the abdominal cavity and the cobra is illustrated, and the flexion molding groove 2 for matching with the tip shape portion 1 of these catheters K may be formed in advance.
A plurality of bending molding grooves 2 are arranged side by side in the width direction of the mold portion 20 of the molding mold portion 3 (FIG. 1). In the present embodiment, five bending molding grooves 2 are arranged side by side, but more than that may be used.

成形型部3は金型部20をベース部21上に載置固定して形成する。
そのため、前記した複数のカテーテルKの先端形状部1に合わせた屈曲成形溝2を形成した金型部20を予め用意しておいて選択使用すればよく、廉価に構成できる。
したがって、金型部20はベース部21に対して着脱自在に取付ける。
金型部20をベース部21上に固定する固定手段は任意であり、本実施形態ではボルト23により固定している。
金型部20およびベース部21には上下方向に貫通する貫通孔22を複数形成する。貫通孔22は加温部4内にて加熱する際に、加温部4内の熱気の流通を良好にさせる。
The mold portion 3 is formed by placing and fixing the mold portion 20 on the base portion 21.
Therefore, the mold portion 20 in which the bending molding groove 2 formed in accordance with the tip shape portions 1 of the plurality of catheters K described above may be prepared in advance and selectively used, and the configuration can be made at low cost.
Therefore, the mold portion 20 is detachably attached to the base portion 21.
The fixing means for fixing the mold portion 20 on the base portion 21 is arbitrary, and in the present embodiment, the mold portion 20 is fixed by the bolt 23.
A plurality of through holes 22 penetrating in the vertical direction are formed in the mold portion 20 and the base portion 21. When the through hole 22 is heated in the heating portion 4, the through hole 22 improves the flow of hot air in the heating portion 4.

金型部20の所定位置にはサーミスター等により構成した温度センサー24Aを装着する装着穴24Bを形成する。
図6はカテーテルKおよび成形型部3の他の実施形態を示し、カテーテルKの先端形状部1の先端水平部15を第1弯曲部(プライマリーカーブ)16に対して交差方向に弯曲形成させて3次元的な立体先端水平部15Aに形成したものであり、このカテーテルKの立体先端水平部15Aを成形するため、成形型部3の金型部20には立体先端水平部15用の屈曲成形溝2を有するブロック状金型部20Aを設けている。
この場合、成形型部3の金型部20の屈曲成形溝2とブロック状金型部20Aの屈曲成形溝2とは、3次元的な立体先端水平部15Aを形成できるように連続カーブとなるように研削形成される。
A mounting hole 24B for mounting the temperature sensor 24A composed of a thermistor or the like is formed at a predetermined position of the mold portion 20.
FIG. 6 shows another embodiment of the catheter K and the mold portion 3, in which the tip horizontal portion 15 of the tip shape portion 1 of the catheter K is curved in the intersecting direction with respect to the first curved portion (primary curve) 16. It is formed on a three-dimensional three-dimensional tip horizontal portion 15A, and in order to mold the three-dimensional tip horizontal portion 15A of this catheter K, the mold portion 20 of the molding die portion 3 is flexed and molded for the three-dimensional tip horizontal portion 15. A block-shaped mold portion 20A having a groove 2 is provided.
In this case, the bending molding groove 2 of the mold portion 20 of the molding mold portion 3 and the bending molding groove 2 of the block-shaped mold portion 20A form a continuous curve so that a three-dimensional three-dimensional tip horizontal portion 15A can be formed. It is formed by grinding.

また、ブロック状金型部20Aは金型部20に着脱自在、かつ、固定状態に取付可能に構成する。
このカテーテルKの先端形状部1の成形方法の一例を示すと、金型部20の屈曲成形溝2にカテーテルKの先端形状部1の各部を嵌合させ、次に、金型部20の上面より上方に突出する立体先端水平部15Aに、ブロック状金型部20Aの屈曲成形溝2を嵌合させ、この状態でブロック状金型部20Aを金型部20の上面に任意の手段にて固定し、前記した手順により、カテーテルKの先端形状部1を加熱成形する。
Further, the block-shaped mold portion 20A is configured to be detachable and attachable to the mold portion 20 in a fixed state.
To show an example of the molding method of the tip shape portion 1 of the catheter K, each portion of the tip shape portion 1 of the catheter K is fitted into the bending molding groove 2 of the mold portion 20, and then the upper surface of the mold portion 20 is formed. The bent molding groove 2 of the block-shaped mold portion 20A is fitted into the three-dimensional tip horizontal portion 15A protruding upward, and in this state, the block-shaped mold portion 20A is placed on the upper surface of the mold portion 20 by any means. After fixing, the tip-shaped portion 1 of the catheter K is heat-molded according to the procedure described above.

加温部4の構成は任意であるが、成形型部3の屈曲成形溝2とカテーテルKの先端形状部1を収容する空間容積を有する箱状の加温庫(オーブン)25を有し、加温庫25を開閉する開閉シャッター26を設ける(図7)。
加温庫25内には熱源となる発熱体27を設ける。発熱体27の構成は任意であるが、本実施形態の発熱体27は軸棒形状に形成し、加温庫25内に設けた載置台28の上下に夫々前後一対で4本の発熱体27を設けている。
Although the configuration of the heating portion 4 is arbitrary, it has a box-shaped heating chamber (oven) 25 having a space volume for accommodating the bending molding groove 2 of the molding mold portion 3 and the tip-shaped portion 1 of the catheter K. An opening / closing shutter 26 for opening / closing the heating chamber 25 is provided (FIG. 7).
A heating element 27 as a heat source is provided in the heating chamber 25. The configuration of the heating element 27 is arbitrary, but the heating element 27 of the present embodiment is formed in the shape of a shaft rod, and four heating elements 27 are formed in pairs on the upper and lower sides of the mounting table 28 provided in the heating chamber 25, respectively. Is provided.

そのため、効率的に成形型部3及び先端形状部1を加熱することができる。
加温庫25内の左右何れか一方の側面には送風ファン29を設ける。
加温部4は、熱伝導性のある成形型部3と先端形状部1を加熱することができれば、その素材や発熱原理などは制限されない。本実施形態の発熱体27は、通電すると、発熱体27の有する電気抵抗により発熱する構成としている。
そのため、加温部4で、安定的に成形型部3および先端形状部1を加熱することができる。
なお、加温部4は、シーズヒータ、IHヒータなどといった様々なタイプのヒータでもよい。
Therefore, the molding die portion 3 and the tip shape portion 1 can be efficiently heated.
A blower fan 29 is provided on either the left or right side of the heating chamber 25.
As long as the heating portion 4 can heat the mold portion 3 having thermal conductivity and the tip shape portion 1, the material and the principle of heat generation are not limited. The heating element 27 of the present embodiment is configured to generate heat due to the electric resistance of the heating element 27 when energized.
Therefore, the heating portion 4 can stably heat the molding mold portion 3 and the tip-shaped portion 1.
The heating unit 4 may be various types of heaters such as a sheathed heater and an IH heater.

ただし、加温部4は、カテーテルKが軟化して屈曲した状態で成形される程度の発熱温度であって、かつ、カテーテルKがその内腔の挿通状態を維持できない程、溶融変形しない程度の発熱温度とする必要があり、このような条件を満たすように、加温部4を加熱制御する。
したがって、加温部4には、カテーテルKの外径や材質などに応じて、加熱制御するコントローラー35を設け、コントローラー35には温度表示部36を設けている(図7)。
温度表示部36は、加温部4の加温庫25内の温度を表示するが、温度センサー24Aによる金型部20の加熱温度を切替表示するように構成してもよい。
However, the heating portion 4 has a heat generation temperature such that the catheter K is formed in a softened and bent state, and the catheter K is not melted and deformed to such an extent that the catheter K cannot maintain the insertion state of its lumen. It is necessary to set the heat generation temperature, and the heating unit 4 is heated and controlled so as to satisfy such a condition.
Therefore, the heating unit 4 is provided with a controller 35 that controls heating according to the outer diameter and material of the catheter K, and the controller 35 is provided with a temperature display unit 36 (FIG. 7).
The temperature display unit 36 displays the temperature inside the heating chamber 25 of the heating unit 4, but may be configured to switch and display the heating temperature of the mold unit 20 by the temperature sensor 24A.

なお、本願では加温部4にてカテーテルKの先端形状部1を血管形状に合わせて加熱変形させ、その後、冷却して血管形状に合わせて変形させた形状を保持させればよく、コントローラー35の構成は要件ではないので、コントローラー35の構成の詳細についての記載は省略する。 In the present application, the tip shape portion 1 of the catheter K may be heated and deformed according to the blood vessel shape in the heating portion 4, and then cooled to maintain the deformed shape according to the blood vessel shape. Since the configuration of the controller 35 is not a requirement, the description of the details of the configuration of the controller 35 is omitted.

<成形装置>
このカテーテルKの先端形状部1の成形加工に使用する本願の成形装置5は、主な構成要素として、カテーテルKの先端形状部1を成形する成形型部3と、加温部4と、移送手段40を有する移送台41とを有して構成する(図8)。
上記した成形型部3は、移送台41の移送手段40上を移送可能にさせるため、移送テーブル42を介して移送手段40に供給する構成とし、移送テーブル42と成形型部3とは一体または別体で形成する構成とし、本実施形態では一体状に形成している。
<Molding equipment>
The molding apparatus 5 of the present application used for molding the tip shape portion 1 of the catheter K has a molding mold portion 3 for molding the tip shape portion 1 of the catheter K, a heating portion 4, and a transfer as main components. It is configured to have a transfer table 41 having the means 40 (FIG. 8).
The mold portion 3 described above is configured to be supplied to the transfer means 40 via the transfer table 42 in order to enable transfer on the transfer means 40 of the transfer table 41, and the transfer table 42 and the mold portion 3 are integrally or It is formed as a separate body, and is integrally formed in the present embodiment.

移送テーブル42は平板状に形成したテーブル部42Aと、テーブル部42Aの左右両側に起立する起立部42Bと、起立部42Bに設けた取手部42Cを有して形成している。
テーブル部42AにはカテーテルKの本体部分10を載置し、起立部42BはカテーテルKの本体部分10の落下を防止し、取手部42Cは移送テーブル42を移送台41に供給する際に使用し、供給運搬作業を容易にする。
The transfer table 42 is formed by having a table portion 42A formed in a flat plate shape, standing portions 42B standing on both left and right sides of the table portion 42A, and handle portions 42C provided on the standing portions 42B.
The main body portion 10 of the catheter K is placed on the table portion 42A, the upright portion 42B prevents the main body portion 10 of the catheter K from falling, and the handle portion 42C is used when supplying the transfer table 42 to the transfer table 41. , Facilitates supply and transportation work.

移送テーブル42は、カテーテルKの本体部分10を載置できればよく、その構成は任意であるが、移送台41の移送手段40への載置供給および移送手段40よる移送が可能な程度の剛性を有していればよい。
また、成形型部3は移送テーブル42とは一体または別体で形成する構成とすると共に、成形型部3のみが加温部4の加温庫25内に挿入される構成としている。
そのため、カテーテルKの先端形状部1の加熱成形を容易にできる。
The transfer table 42 only needs to be capable of mounting the main body portion 10 of the catheter K, and its configuration is arbitrary, but the transfer table 42 has a rigidity sufficient to be mounted and supplied to the transfer means 40 of the transfer table 41 and transferred by the transfer means 40. You just have to have it.
Further, the molding mold portion 3 is formed integrally or separately from the transfer table 42, and only the molding mold portion 3 is inserted into the heating chamber 25 of the heating portion 4.
Therefore, heat molding of the tip shape portion 1 of the catheter K can be easily performed.

移送台41は、前後方向に長い左右一対の移送フレーム43を有し、移送フレーム43に設けた支脚44により床上に載置される。なお、本実施形態の移送台41は支脚44を設けているが、支脚44を省略して、任意の台上に移送台41を直接設置してもよい。
移送台41の移送手段40の構成も任意であり、例えば、移送ローラーあるいは移送ベルトを設ければよい。
The transfer table 41 has a pair of left and right transfer frames 43 that are long in the front-rear direction, and is placed on the floor by a support leg 44 provided on the transfer frame 43. Although the transfer table 41 of the present embodiment is provided with the support legs 44, the transfer table 41 may be directly installed on any table by omitting the support legs 44.
The configuration of the transfer means 40 of the transfer table 41 is also arbitrary, and for example, a transfer roller or a transfer belt may be provided.

また、移送台41の移送手段40は、自動または手動により移送テーブル42を移送できればよく、本実施形態では、各移送ローラー45を駆動源(モーター)46の出力軸(図示省略)に取付けているが、所謂自由回転のフリーローラーを設けてもよい。
移送テーブル42を移送する移送手段40は移送テーブル42を往復移動可能に構成する。
したがって、駆動源46は正逆回転切替可能なモーターにより構成する。
Further, the transfer means 40 of the transfer table 41 only needs to be able to transfer the transfer table 42 automatically or manually, and in the present embodiment, each transfer roller 45 is attached to an output shaft (not shown) of the drive source (motor) 46. However, a so-called free-rotating free roller may be provided.
The transfer means 40 that transfers the transfer table 42 configures the transfer table 42 so that it can be reciprocated.
Therefore, the drive source 46 is configured by a motor capable of switching forward and reverse rotation.

移送ローラー45は 移送台41の左右の移送フレーム43を連結する連結杆47の左右中央位置に設ける。
そのため、移送テーブル42の左右中間位置に移送ローラー45が接触して、確実に移送する。
移送フレーム43の上方には左右一対のガイドレール48を設ける。ガイドレール48は、移送テーブル42の左右両側の起立部42Bと同じ左右幅に形成し、移送テーブル42の移送を案内する。
移送台41上の終端部位置には、前記加温部4を設ける。
The transfer roller 45 is provided at the left and right center positions of the connecting rod 47 that connects the left and right transfer frames 43 of the transfer table 41.
Therefore, the transfer roller 45 comes into contact with the left and right intermediate positions of the transfer table 42 to reliably transfer.
A pair of left and right guide rails 48 are provided above the transfer frame 43. The guide rail 48 is formed to have the same left-right width as the standing portions 42B on both the left and right sides of the transfer table 42, and guides the transfer of the transfer table 42.
The heating unit 4 is provided at the terminal position on the transfer table 41.

加温部4は、箱状の加温庫25の後側に開閉シャッター26を設ける。開閉シャッター26は手動または自動で開閉する構成としており、自動で開閉させるときには、開閉シャッター26をモーター等・エアシリンダ等のアクチュエーターにより自動開閉する構成とするとよい。
また、加温部4の加温庫25内に設けた載置台28は、移送手段40が移送する移送テーブル42の前端の成形型部3と略同じ高さに配置し、加温部4の開閉シャッター26を設けて移送テーブル42を移送すると、加温部4の加温庫25内に設けた載置台28上に移送テーブル42の前端の成形型部3が載置されるように構成する。
The heating unit 4 is provided with an opening / closing shutter 26 on the rear side of the box-shaped heating chamber 25. The opening / closing shutter 26 is configured to open / close manually or automatically, and when opening / closing automatically, the opening / closing shutter 26 may be automatically opened / closed by an actuator such as a motor or an air cylinder.
Further, the mounting table 28 provided in the heating chamber 25 of the heating unit 4 is arranged at substantially the same height as the molding mold portion 3 at the front end of the transfer table 42 to be transferred by the transfer means 40, and the heating unit 4 is arranged. When the transfer table 42 is transferred by providing the opening / closing shutter 26, the molding portion 3 at the front end of the transfer table 42 is placed on the mounting table 28 provided in the heating chamber 25 of the heating unit 4. ..

加温部4の手前側の移送台41の前後中間部には、加温部4にて加熱された成形型部3およびカテーテルKの先端形状部1を冷却する冷却部6を設ける。冷却部6は、ベルチェ素子(図示省略)を有する冷却板50を、移送台41の移送手段40の移送路に上下移動自在に取付け、成形型部3およびカテーテルKの先端形状部1を下方から冷却する構成としている。
すなわち、移送台41の終端側に加温部4を設け、移送台41の前後中間所定位置に冷却部6を設ける。
A molding portion 3 heated by the heating portion 4 and a cooling portion 6 for cooling the tip-shaped portion 1 of the catheter K are provided in the front-rear intermediate portion of the transfer table 41 on the front side of the heating portion 4. In the cooling unit 6, a cooling plate 50 having a Belche element (not shown) is attached to the transfer path of the transfer means 40 of the transfer table 41 so as to be vertically movable, and the molding portion 3 and the tip shape portion 1 of the catheter K are attached from below. It is configured to be cooled.
That is, a heating unit 4 is provided on the terminal side of the transfer table 41, and a cooling unit 6 is provided at a predetermined position between the front and rear of the transfer table 41.

そのため、移送台41の長さを短くしてコンパクトなカテーテルの先端形状部成形装置を提供できる。
また、冷却部6の冷却板50を、シリンダ51により上下自在に移送台41に設け、移送台41の移送手段40による移送テーブル42の往路移動中は移送路より下方に待機して移送テーブル42を通過させて加温部4で加熱成形し、加熱成形終了後の移送テーブル42を移送手段40により移送台41の始端側に戻し移送させて成形型部3およびカテーテルKの先端形状部1が冷却部6の下方に至ると、移送テーブル42の移送を停止させ、冷却板50を上昇させて成形型部3の下面に当接させて、カテーテルKの先端形状部1を冷却する。
Therefore, it is possible to provide a compact catheter tip shape forming device by shortening the length of the transfer table 41.
Further, the cooling plate 50 of the cooling unit 6 is provided on the transfer table 41 so as to be vertically movable by the cylinder 51, and the transfer table 42 waits below the transfer path during the outbound movement of the transfer table 42 by the transfer means 40 of the transfer table 41. The transfer table 42 after the completion of the heat molding is returned to the starting end side of the transfer table 41 by the transfer means 40 and transferred to the molding die portion 3 and the tip shape portion 1 of the catheter K. When it reaches the lower part of the cooling portion 6, the transfer of the transfer table 42 is stopped, the cooling plate 50 is raised and brought into contact with the lower surface of the molding portion 3, and the tip-shaped portion 1 of the catheter K is cooled.

この場合、冷却部6は、冷却部6の移送テーブル42の移送方向上手側に、一つの移送テーブル42の長さを有するように、移送台41の始端部より一つの移送テーブル42の長さ分の間隔を有して移送台41に設ける。
そのため、移送テーブル42の成形型部3を、冷却部6の上方に位置させたとき、移送テーブル42の後端は移送台1の始端部上に位置して移送台1により支持することができ、冷却部6上の移送テーブル42の成形型部3を安定姿勢で支持することができ、冷却効率を向上させられる。
In this case, the cooling unit 6 has a length of one transfer table 42 from the start end of the transfer table 41 so that the cooling unit 6 has the length of one transfer table 42 on the upper side of the transfer table 42 of the cooling unit 6 in the transfer direction. It is provided on the transfer table 41 with an interval of minutes.
Therefore, when the molding portion 3 of the transfer table 42 is positioned above the cooling portion 6, the rear end of the transfer table 42 is located on the start end portion of the transfer table 1 and can be supported by the transfer table 1. , The molding part 3 of the transfer table 42 on the cooling part 6 can be supported in a stable posture, and the cooling efficiency can be improved.

冷却板50には加熱面を冷却する送水ホース52を接続し、送水ホース52の中間部は冷却用水タンク53に接続する。冷却用水タンク53には図示は省略するが、送水ポンプを設け、冷却用水タンク53内の冷却水を送水ホース52により循環させて、冷却板50の加熱部を冷却する。 A water supply hose 52 for cooling the heating surface is connected to the cooling plate 50, and the intermediate portion of the water supply hose 52 is connected to the cooling water tank 53. Although not shown, the cooling water tank 53 is provided with a water pump, and the cooling water in the cooling water tank 53 is circulated by the water supply hose 52 to cool the heating portion of the cooling plate 50.

(実施形態の作用)
本発明は上記構成であり、成形型部3に、予め血管形状に合わせて屈曲成形溝2を形成しておき、成形型部3の屈曲成形溝2にカテーテルKの先端形状部1を嵌合(嵌入)させ、成形型部3ごと先端形状部1を加温部4内に入れ、加温部4内にて所定温度かつ所定時間で加熱(加温)し、カテーテルKの先端形状部1と成形型部3を任意の手段で冷却し、成形型部3の屈曲成形溝2からカテーテルKの先端形状部1を取り外すと、カテーテルKの先端形状部1を血管形状に合わせる成形工程が終了するので、先端形状部1を成形型部3の屈曲成形溝2に容易に嵌合させることができ、しかも、先端形状部1を屈曲成形溝2から取り外すのも容易であり、取外しの際の形状変化も生じない。
(Action of Embodiment)
The present invention has the above configuration, in which a bending molding groove 2 is formed in advance in the molding mold portion 3 according to the shape of a blood vessel, and the tip shape portion 1 of the catheter K is fitted into the bending molding groove 2 of the molding mold portion 3. (Insert), the tip shape portion 1 together with the molding portion 3 is placed in the heating portion 4, and the tip shape portion 1 of the catheter K is heated (heated) in the heating portion 4 at a predetermined temperature and for a predetermined time. When the molding part 3 is cooled by any means and the tip shape part 1 of the catheter K is removed from the bending molding groove 2 of the molding part 3, the molding step of matching the tip shape part 1 of the catheter K to the blood vessel shape is completed. Therefore, the tip shape portion 1 can be easily fitted into the bending molding groove 2 of the molding mold portion 3, and the tip shape portion 1 can be easily removed from the bending molding groove 2 at the time of removal. No shape change occurs.

すなわち、本発明では、カテーテルKの先端形状部1は、成形型部3の屈曲成形溝2に嵌合させて加熱して屈曲成形するので、従来のような、カテーテル内に血管形状に合わせた芯金となる芯金ワイヤーを挿入する方法に比し、成形作業が容易である。
また、加熱工程は加熱空間内に先端形状部1と成形型部3(屈曲成形溝2)を入れるだけで良く、グリセリン等に浸漬させて加熱する必要がないので、洗浄工程を省略でき、成形工程を簡便にするだけでなく、衛生面の問題も生じない。
成形型部3に形成する屈曲成形溝2は、カテーテルKの先端を挿入し、その後留置する血管形状に合わせて成形するので、屈曲成形溝2の成形は容易である。
That is, in the present invention, the tip shape portion 1 of the catheter K is fitted into the bending molding groove 2 of the molding mold portion 3 and heated for bending molding. The molding work is easier than the method of inserting the core metal wire to be the core metal.
Further, in the heating step, it is only necessary to insert the tip shape portion 1 and the molding mold portion 3 (bending molding groove 2) in the heating space, and it is not necessary to immerse in glycerin or the like for heating, so that the cleaning step can be omitted and molding can be performed. Not only does it simplify the process, it does not cause hygiene problems.
Since the bending molding groove 2 formed in the molding mold portion 3 is formed according to the shape of the blood vessel in which the tip of the catheter K is inserted and then placed, the bending molding groove 2 can be easily formed.

また、屈曲成形溝2は、成形型部3の表裏側の何れか一面となる溝形成面3Aに、凹むように形成し、屈曲成形溝2の溝底に対向(対面)する側は成形型部3の溝形成面3Aの上面より上方の開放空間3Bとして形成しているので、成形型部3を加温部4内に搬入すると、加温部4の熱気空間が溝形成面3Aの上面より上方の開放空間3Bとなって、成形型部3全体が加温され、カテーテルKの先端形状部1を加熱成形させる。 Further, the bending molding groove 2 is formed so as to be recessed in the groove forming surface 3A which is one of the front and back sides of the molding die portion 3, and the side facing (facing) the groove bottom of the bending molding groove 2 is a molding die. Since it is formed as an open space 3B above the upper surface of the groove forming surface 3A of the portion 3, when the molding portion 3 is carried into the heating portion 4, the hot air space of the heating portion 4 becomes the upper surface of the groove forming surface 3A. The upper open space 3B is formed, the entire molding mold portion 3 is heated, and the tip-shaped portion 1 of the catheter K is heat-molded.

それゆえ、屈曲成形溝2は、成形型部3の一面形状の溝形成面3Aのみに、凹むように形成し、従来のような上下一対の型部材で挟持して加熱成形するのではないので、屈曲成形溝2へのカテーテルKの先端形状部1の嵌合作業が容易でかつ正確に行える。 Therefore, the bent molding groove 2 is formed so as to be recessed only on the one-sided groove forming surface 3A of the molding die portion 3, and is not sandwiched between a pair of upper and lower mold members as in the conventional case and heat-molded. , The work of fitting the tip shape portion 1 of the catheter K into the bending molding groove 2 can be easily and accurately performed.

加熱成形加工されたカテーテルKの先端形状部1は、所謂ガイドワイヤーより柔軟であり、カテーテルK内にガイドワイヤーを挿入すると、ガイドワイヤーの形状に合わせて直線状となり、この状態で、患者の血管内へ挿入し、血管の所定部位まで挿入して、ガイドワイヤーを抜くと、ガイドワイヤーの剛性により直線形状に保持されていたカテーテルKの先端形状部1は、予め加熱成形加工されていた血管形状に合わせた形状に復帰し、この血管形状に合わせた先端形状部1を血管内に留置し、その後血管造影剤の注入して行う血管造影等の処置あるいは血栓除去等の手術を行う。 The tip shape portion 1 of the heat-molded catheter K is more flexible than the so-called guide wire, and when the guide wire is inserted into the catheter K, it becomes linear according to the shape of the guide wire, and in this state, the blood vessel of the patient. When the catheter K is inserted into the catheter, inserted to a predetermined portion of the blood vessel, and the guide wire is pulled out, the tip shape portion 1 of the catheter K, which is held in a linear shape due to the rigidity of the guide wire, has a blood vessel shape that has been heat-molded in advance. The tip shape portion 1 that matches the shape of the blood vessel is placed in the blood vessel, and then angiography or other treatment performed by injecting an angiographic agent or an operation such as removing a blood clot is performed.

屈曲成形溝2の幅方向断面は、カテーテルKの外径を直径とする半円形状としているので、カテーテルKの外周面の全周を効率的に加熱することができ、屈曲成形溝2の形状に合わせてカテーテルKを確実に曲げ加工することができる。
また、成形型部3の屈曲成形溝2は、先端形状部1の径より深い溝とし、屈曲成形溝2の深さを深くすることにより、先端形状部1を3次元形状とする曲げ加工も可能となる。
Since the cross section in the width direction of the flexion molding groove 2 has a semicircular shape with the outer diameter of the catheter K as the diameter, the entire circumference of the outer peripheral surface of the catheter K can be efficiently heated, and the shape of the flexion molding groove 2 The catheter K can be reliably bent according to the above.
Further, the bending molding groove 2 of the molding mold portion 3 is formed to be a groove deeper than the diameter of the tip shape portion 1, and the tip shape portion 1 can be bent into a three-dimensional shape by increasing the depth of the bending molding groove 2. It will be possible.

加温部4は、成形型部3の屈曲成形溝2とカテーテルKの先端形状部1を収容する空間容積を有する加温庫25を有し、加温庫25を開閉する開閉シャッター26を設けているので、加温部4の開閉シャッター26を開き、加温庫25内の載置台28上に成形型部3ごと屈曲成形溝2に嵌った先端形状部1を載置して加熱する。
加温庫25内には熱源となる発熱体27を設けているので、発熱体27に所定時間通電して加温庫25内の空気を熱し、先端形状部1を加熱する。
The heating unit 4 has a heating chamber 25 having a space volume for accommodating the bending molding groove 2 of the molding mold portion 3 and the tip-shaped portion 1 of the catheter K, and is provided with an opening / closing shutter 26 for opening and closing the heating chamber 25. Therefore, the opening / closing shutter 26 of the heating portion 4 is opened, and the tip-shaped portion 1 fitted in the bending molding groove 2 together with the molding portion 3 is placed on the mounting table 28 in the heating chamber 25 and heated.
Since a heating element 27 serving as a heat source is provided in the heating chamber 25, the heating element 27 is energized for a predetermined time to heat the air in the heating chamber 25 and heat the tip shape portion 1.

この場合、加温部4には、カテーテルKの外径や材質などに応じて、加熱制御するコントローラー35を設けているので、コントローラー35に加温庫25内の温度設定数値や加熱時間等の加熱条件を入力すると、加温部4は先端形状部1を自動的に加熱して成形加工をすることができる。
次に、本発明のカテーテル成形装置についての作動を説明すると、カテーテルKの先端形状部1を嵌合セットした成形型部3を、移送台41の移送手段40上に載置するための移送テーブル42上に載置し、この移送テーブル42を移送台41の移送手段40の始端部に載置供給する。
In this case, since the heating unit 4 is provided with a controller 35 that controls heating according to the outer diameter and material of the catheter K, the controller 35 is provided with a temperature setting value in the heating chamber 25, a heating time, and the like. When the heating conditions are input, the heating unit 4 can automatically heat the tip shape portion 1 to perform the molding process.
Next, the operation of the catheter molding apparatus of the present invention will be described. A transfer table for mounting the molding mold portion 3 in which the tip shape portion 1 of the catheter K is fitted and set on the transfer means 40 of the transfer table 41. It is placed on the transfer table 42, and the transfer table 42 is placed and supplied to the starting end of the transfer means 40 of the transfer table 41.

次に、加温部4の開閉シャッター26を開放し、この状態で、手動または自動で移送テーブル42を加温部4に向けて移送する。
加温部4は移送台41の上方に設けているので、移送テーブル42上の成形型部3の部分を加温部4内に搬入し、この状態で開閉シャッター26を閉め、所定時間・所定温度で加熱成形する。
Next, the opening / closing shutter 26 of the heating unit 4 is opened, and in this state, the transfer table 42 is manually or automatically transferred toward the heating unit 4.
Since the heating unit 4 is provided above the transfer table 41, the portion of the molding unit 3 on the transfer table 42 is carried into the heating unit 4, and the opening / closing shutter 26 is closed in this state for a predetermined time and predetermined time. Heat mold at temperature.

加熱成形が終了すると、前後側の開閉シャッター26を開放し、移送テーブル42を前側に移送し、移送テーブル42の成形型部3が冷却部6の下方に至ると、移送テーブル42の移送を停止させ、冷却部6にて成形型部3ごとカテーテルKの先端形状部1を所定時間冷却し、冷却が完了すると、カテーテルKの先端形状部1の成形が完了し、カテーテルKの先端形状部1を成形型部3の屈曲成形溝2から取り出す。
この場合、冷却部6は移送台41の移送路に対して上下動自在に構成しているので、移送テーブル42の往路移送するときには、移送路より下方に下降させて退避させられ、移送テーブル42の移送に冷却部6の存在は干渉せず、移送テーブル42を確実に移送させられる。
When the heat molding is completed, the opening / closing shutters 26 on the front and rear sides are opened, the transfer table 42 is transferred to the front side, and when the molding mold portion 3 of the transfer table 42 reaches below the cooling portion 6, the transfer of the transfer table 42 is stopped. Then, the cooling unit 6 cools the tip shape portion 1 of the catheter K together with the molding portion 3 for a predetermined time, and when the cooling is completed, the molding of the tip shape portion 1 of the catheter K is completed and the tip shape portion 1 of the catheter K is completed. Is taken out from the bending molding groove 2 of the molding mold portion 3.
In this case, since the cooling unit 6 is configured to be vertically movable with respect to the transfer path of the transfer table 41, when the transfer table 42 is transferred on the outward path, the cooling unit 6 is lowered below the transfer path and retracted, and the transfer table 42 is retracted. The presence of the cooling unit 6 does not interfere with the transfer of the transfer table 42, and the transfer table 42 can be reliably transferred.

また、カテーテルKの先端形状部1を冷却するときは、下降待機させていた冷却部6を成形型部3の冷却可能高さ位置まで上昇させて成形型部3ごとにカテーテルKの先端形状部1を冷却するので、確実に冷却することができる。
本発明のカテーテル成形装置は、移送台41上の終端部に加温部4を設け、移送台41の前後中間所定位置に冷却部6を上下自在に設け、カテーテルKの先端形状部1を嵌合させた成形型部3は移送テーブル42を介して往復移動可能に構成しているので、移送台41の長さを短くしてコンパクトなカテーテルの先端形状部成形装置を提供できる。
Further, when cooling the tip shape portion 1 of the catheter K, the cooling portion 6 which has been kept waiting for lowering is raised to the coolable height position of the molding mold portion 3, and the tip shape portion of the catheter K is raised for each molding mold portion 3. Since 1 is cooled, it can be reliably cooled.
In the catheter molding apparatus of the present invention, a heating unit 4 is provided at the terminal portion on the transfer table 41, a cooling unit 6 is provided vertically at a predetermined position in the middle of the front and rear of the transfer table 41, and the tip shape portion 1 of the catheter K is fitted. Since the combined molding mold portion 3 is configured to be reciprocally movable via the transfer table 42, the length of the transfer table 41 can be shortened to provide a compact catheter tip shape portion molding device.

さらに、コンパクトなカテーテル成形装置であるから、所謂殺菌処理したクリーンルーム内に搬入して成形作業を行うことができる。
これにより、カテーテルKの製造成形作業のすべての工程をクリーンルーム内で完結させることができ、作業効率を向上させられる。
すなわち、カテーテルKをクリーンルーム内に持ち込む際の洗浄工程が不要になり、カテーテルKをクリーンルーム内への持ち出しや持ち込みが減る分、管理が煩雑にならない。
Further, since it is a compact catheter molding apparatus, it can be carried into a so-called sterilized clean room to perform molding work.
As a result, all the steps of manufacturing and molding the catheter K can be completed in the clean room, and the work efficiency can be improved.
That is, the cleaning step when bringing the catheter K into the clean room becomes unnecessary, and the number of taking out and bringing in the catheter K into the clean room is reduced, so that the management is not complicated.

1…先端形状部、2…屈曲成形溝、3…成形型部、3A…溝形成面、3B…開放空間、4…加温部、6…冷却部、10…本体部分、15…先端水平部、16…弯曲部、17…第2弯曲部、18…直線部、20…金型部、21…ベース部、22…貫通孔、23…ボルト、24…温度センサー、24B…装着穴、25…加温庫、26…開閉シャッター、27…発熱体、28…載置台、29…送風ファン、35…コントローラー、36…温度表示部、40…移送手段 、41…移送台、42…移送テーブル、42A…テーブル部、42B…起立部、42C…取手部、43…移送フレーム、44…支脚、45…移送ローラー、46…駆動源、50…冷却板、51…本体ケース、52…送水ホース、53…冷却用水タンク。 1 ... Tip shape part, 2 ... Bending molding groove, 3 ... Molding mold part, 3A ... Groove forming surface, 3B ... Open space, 4 ... Heating part, 6 ... Cooling part, 10 ... Main body part, 15 ... Tip horizontal part , 16 ... Curved part, 17 ... 2nd curved part, 18 ... Straight part, 20 ... Mold part, 21 ... Base part, 22 ... Through hole, 23 ... Bolt, 24 ... Temperature sensor, 24B ... Mounting hole, 25 ... Heater, 26 ... Open / close shutter, 27 ... Heat generator, 28 ... Mounting stand, 29 ... Blower fan, 35 ... Controller, 36 ... Temperature display, 40 ... Transfer means, 41 ... Transfer table, 42 ... Transfer table, 42A ... Table part, 42B ... Standing part, 42C ... Handle part, 43 ... Transfer frame, 44 ... Support leg, 45 ... Transfer roller, 46 ... Drive source, 50 ... Cooling plate, 51 ... Body case, 52 ... Water supply hose, 53 ... Cooling water tank.

Claims (10)

カテーテルKの先端形状部1を嵌合させる屈曲成形溝2を形成した熱伝導性を有する成形型部3と、先端形状部1を嵌合させた成形型部3を収容しうる容積を有する加温庫25および加熱手段を有する加温部4とを備え、成形型部3は、金型部20の上面に、屈曲成形溝2を金型部20の幅方向に複数並設すると共に、屈曲成形溝2の上方を開放して形成したカテーテルの先端形状部成形装置。 An addition having a capacity capable of accommodating a mold portion 3 having thermal conductivity formed by forming a bending molding groove 2 into which the tip shape portion 1 of the catheter K is fitted and a molding mold portion 3 into which the tip shape portion 1 is fitted. A warming chamber 25 and a heating portion 4 having a heating means are provided, and the molding mold portion 3 has a plurality of bending molding grooves 2 arranged side by side in the width direction of the mold portion 20 on the upper surface of the mold portion 20, and is bent. A tip-shaped portion molding device for a catheter formed by opening the upper part of the molding groove 2. 請求項1において、屈曲成形溝2は、カテーテルKの先端形状部1の径より深い溝形状に形成したカテーテルの先端形状部成形装置。 In claim 1, the flexion molding groove 2 is a catheter tip shape molding device formed in a groove shape deeper than the diameter of the tip shape portion 1 of the catheter K. 請求項1または請求項2において、屈曲成形溝2は前記成形型部3の金型部20に形成し、金型部20はベース部21上に着脱交換自在に載置固定して形成したカテーテルの先端形状部成形装置。 In claim 1 or 2, a catheter formed by forming a bending molding groove 2 in a mold portion 20 of the molding mold portion 3 and mounting and fixing the mold portion 20 on a base portion 21 so as to be detachably replaceable. Tip shape molding device. 請求項1〜請求項3において、屈曲成形溝2にカテーテルKの先端形状部1を嵌合させた成形型部3を載置した移送テーブル42を手動または自動で移送する移送手段40を有する移送台41上の終端部に、前記加温部4を設け、移送台41の移送テーブル42の移送方向の前後中間所定位置には、成形型部3およびカテーテルKの先端形状部1を冷却する冷却部6を上下自在に設けたカテーテルの先端形状部成形装置。 In claims 1 to 3, a transfer having a transfer means 40 for manually or automatically transferring a transfer table 42 on which a molding portion 3 in which a tip-shaped portion 1 of a catheter K is fitted is placed in a bending molding groove 2 is manually or automatically transferred. The heating portion 4 is provided at the terminal portion on the table 41, and the molding portion 3 and the tip-shaped portion 1 of the catheter K are cooled at a predetermined position in the front-rear intermediate position in the transfer direction of the transfer table 42 of the transfer table 41. A device for forming a tip-shaped portion of a catheter in which a portion 6 is provided vertically. 請求項1〜請求項4において、成形型部3は移送テーブル42とは一体または別体で形成する構成とすると共に、成形型部3のみが加温部4の加温庫25内に挿入される構成としたカテーテルの先端形状部成形装置。 In claims 1 to 4, the molding die 3 is formed integrally or separately from the transfer table 42, and only the molding die 3 is inserted into the heating chamber 25 of the heating section 4. A device for forming the tip shape of a catheter. 請求項4または請求項5において、移送テーブル42を移送する移送手段40は移送テーブル42を往復移動可能に構成したカテーテルの先端形状部成形装置。 According to claim 4 or 5, the transfer means 40 for transferring the transfer table 42 is a catheter tip shape forming device configured so that the transfer table 42 can be reciprocated. 請求項4〜請求項6において、加温部4の加温庫25内に設けた載置台28は、移送手段40が移送する移送テーブル42の前端の成形型部3と略同じ高さに配置したカテーテルの先端形状部成形装置。 In claims 4 to 6, the mounting table 28 provided in the heating chamber 25 of the heating unit 4 is arranged at substantially the same height as the molding portion 3 at the front end of the transfer table 42 to be transferred by the transfer means 40. A device for forming the tip shape of a catheter. 請求項4〜請求項7において、冷却部6は、冷却部6の移送テーブル42の移送方向上手側に、一つの移送テーブル42の長さを有するように、所定間隔を有して移送台41に設けたカテーテルの先端形状部成形装置。 In claims 4 to 7, the cooling unit 6 has a predetermined interval so that the transfer table 42 of the cooling unit 6 has a length of one transfer table 42 on the upper side in the transfer direction. A device for forming the tip shape of a catheter provided in. 予め血管形状に合わせて形成した屈曲成形溝2を成形型部3の同一平面上に複数並設して形成し、成形型部3の各屈曲成形溝2にカテーテルKの先端形状部1を嵌合させ、先端形状部1を嵌合させた成形型部3を加温部4内に搬入して所定温度かつ所定時間加熱し、加熱後、カテーテルKの先端形状部1と成形型部3を冷却し、成形型部3の各屈曲成形溝2からカテーテルKの先端形状部1を取り外して成形するカテーテルの先端形状部の成形方法。 A plurality of bending molding grooves 2 formed in advance according to the shape of the blood vessel are formed side by side on the same plane of the molding mold portion 3, and the tip shape portion 1 of the catheter K is fitted into each bending molding groove 2 of the molding mold portion 3. The molded part 3 to which the tip-shaped part 1 is fitted is brought into the heating part 4 and heated at a predetermined temperature for a predetermined time, and after heating, the tip-shaped part 1 and the molding part 3 of the catheter K are combined. A method for molding a tip-shaped portion of a catheter, which is cooled and molded by removing the tip-shaped portion 1 of the catheter K from each bending molding groove 2 of the molding mold portion 3. カテーテルKの先端形状部1を嵌合させた成形型部3を、移送テーブル42を介して移送する移送台41の終端側に加温部4を設け、移送台41の移送テーブル42の移送方向の前後中間所定位置に上下自在に冷却部6を設け、成形型部3を冷却しうる冷却部6を、移送台41の移送手段40による成形型部3の移送路より下方の待機位置に下降待機させ、成形型部3の屈曲成形溝2にカテーテルKの先端形状部1を嵌合させ、カテーテルKの先端形状部1を嵌合させた成形型部3を、移送テーブル42を介して移送台41の移送手段40により往路移送させて移送台41上の加温部4内に搬入し、加温部4内にて成形型部3ごとカテーテルKの先端形状部1を所定温度で所定時間加熱し、加熱後、成形型部3を、移送台41の移送方向の前後中間所定位置の冷却部6まで、移送テーブル42を介して移送手段40により復路移送させ、成形型部3が冷却部6の下方に至ると、下降待機させていた冷却部6を成形型部3の冷却可能高さ位置まで上昇させて成形型部3ごとカテーテルKの先端形状部1を冷却し、冷却後、成形型部3の各屈曲成形溝2からカテーテルKの先端形状部1を取り外して成形するカテーテルの先端形状部の成形方法。 A heating unit 4 is provided on the terminal side of the transfer table 41 for transferring the molded portion 3 into which the tip shape portion 1 of the catheter K is fitted via the transfer table 42, and the transfer direction of the transfer table 42 of the transfer table 41. A cooling unit 6 is provided vertically at a predetermined position in the middle of the front and rear, and the cooling unit 6 capable of cooling the molding unit 3 is lowered to a standby position below the transfer path of the molding unit 3 by the transfer means 40 of the transfer table 41. The molding mold portion 3 in which the tip shape portion 1 of the catheter K is fitted into the bending molding groove 2 of the molding mold portion 3 and the tip shape portion 1 of the catheter K is fitted is transferred via the transfer table 42. It is transferred outbound by the transfer means 40 of the table 41 and carried into the heating portion 4 on the transfer table 41, and the tip-shaped portion 1 of the catheter K together with the molding portion 3 is moved at a predetermined temperature in the heating portion 4 for a predetermined time. After heating and heating, the molding die 3 is returned to the cooling section 6 at a predetermined position in the front-rear and intermediate positions in the transfer direction of the transfer table 41 by the transfer means 40 via the transfer table 42, and the molding die 3 is transferred to the cooling section. When it reaches the lower part of 6, the cooling portion 6 which has been kept waiting for lowering is raised to the cooling possible height position of the molding mold portion 3 to cool the tip shape portion 1 of the catheter K together with the molding mold portion 3, and after cooling, molding is performed. A method for molding the tip-shaped portion of a catheter, which is formed by removing the tip-shaped portion 1 of the catheter K from each bending molding groove 2 of the mold portion 3.
JP2019212160A 2019-11-25 2019-11-25 Catheter tip end shape part molding device, and molding method for catheter tip end shape part Pending JP2021083451A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001120655A (en) * 1999-10-29 2001-05-08 Kuraray Co Ltd Method for manufacturing catheter, and catheter
JP2006341074A (en) * 2006-03-20 2006-12-21 Asahi Intecc Co Ltd Fired mold and method of manufacturing guide wire using the fired mold
JP2017127904A (en) * 2016-01-15 2017-07-27 株式会社カネカ Wire feeding device, and manufacturing method of medical filament

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001120655A (en) * 1999-10-29 2001-05-08 Kuraray Co Ltd Method for manufacturing catheter, and catheter
JP2006341074A (en) * 2006-03-20 2006-12-21 Asahi Intecc Co Ltd Fired mold and method of manufacturing guide wire using the fired mold
JP2017127904A (en) * 2016-01-15 2017-07-27 株式会社カネカ Wire feeding device, and manufacturing method of medical filament

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