JPH01204676A - Deposit method of filter for medical drip chamber - Google Patents

Deposit method of filter for medical drip chamber

Info

Publication number
JPH01204676A
JPH01204676A JP63028540A JP2854088A JPH01204676A JP H01204676 A JPH01204676 A JP H01204676A JP 63028540 A JP63028540 A JP 63028540A JP 2854088 A JP2854088 A JP 2854088A JP H01204676 A JPH01204676 A JP H01204676A
Authority
JP
Japan
Prior art keywords
drip chamber
filter
main body
high frequency
wall
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.)
Granted
Application number
JP63028540A
Other languages
Japanese (ja)
Other versions
JPH0687897B2 (en
Inventor
Tetsuo Iga
伊賀　哲雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SB Kawasumi Laboratories Inc
Original Assignee
Kawasumi Laboratories Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasumi Laboratories Inc filed Critical Kawasumi Laboratories Inc
Priority to JP2854088A priority Critical patent/JPH0687897B2/en
Publication of JPH01204676A publication Critical patent/JPH01204676A/en
Publication of JPH0687897B2 publication Critical patent/JPH0687897B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/847—Drilling standard machine type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/857—Medical tube welding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/14—Filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags

Abstract

PURPOSE:To deposit a filter to the inner wall of a drip chamber by inserting the filter attached to a core bar body in the inner wall of the drip chamber body and pinching the drip chamber body with upper and lower metal molds to supply high frequency to the core bar, the lower metal mold and through an earth line to the upper metal mold. CONSTITUTION:A drip chamber body 14 is secured fixedly to an attaching groove 6a of a lower metal mold 6 and a filter 16 is attached to a body 9 of a core bar 7. Then, the filter 16 is inserted in the inner wall of drip chamber 14 and an attaching groove 5a of an upper metal mold 5 is attached to the drip chamber 14. Thereafter, the drip chamber 14 is pinched by the metal molds 5, 6 to supply high frequency to the core bar 7 and the lower metal mold 6. The high frequency supplied to the lower metal mold 6 is simultaneously supplied through an earth line 13 to the upper metal mold 5. Thus, melted resin in the filter 16 and the drip chamber 14 is absorbed and deposited to a groove 12 formed on the outer peripheral surface of a ring 10 inserted in the body 9 of core bar 7.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、本体内にフィルターを装填した医療用ドリッ
プチャンバーのフィルター溶着方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a filter welding method for a medical drip chamber in which a filter is loaded into the main body.

［従来の技術］ 第５図は、現在使用されている医療用ドリップチャンバ
ー３１の概略図である。[Prior Art] FIG. 5 is a schematic diagram of a currently used medical drip chamber 31.

チャンバー本体３２の内壁には、中リング３４を介して
フィルター３５が溶着されている。A filter 35 is welded to the inner wall of the chamber body 32 via a middle ring 34.

下端部には、液体流出口３５が形成され、上部キャップ
３３には、液体導入０３７と圧力モニターラインとの接
続口３８が装着されている。A liquid outlet 35 is formed at the lower end, and a connection port 38 between the liquid introduction 037 and the pressure monitor line is attached to the upper cap 33.

これら医療用ドリップチャンバー３１は、製造に際して
は第６図に示す方法で実施していた。These medical drip chambers 31 were manufactured by the method shown in FIG.

ドリップチャンバー本体３２を、下金型４１の装着溝４
１ａに固定した後、フィルター３５の内周面にポリ塩化
ビニル製の中リング３４を嵌挿し、該フィルター３５を
芯金４２の嵌挿部４３に装着してチャンバー本体３２の
内壁に固定し、上金型４０の装着溝４０ａによりチャン
バー本体３２をクランプする。Place the drip chamber body 32 into the mounting groove 4 of the lower mold 41.
1a, a polyvinyl chloride inner ring 34 is inserted into the inner peripheral surface of the filter 35, the filter 35 is attached to the insertion part 43 of the core bar 42, and fixed to the inner wall of the chamber body 32, The chamber body 32 is clamped by the mounting groove 40a of the upper mold 40.

高周波を芯金４２、下金型４１に通して中リング３４．
フィルター３５、チャンバー本体３２を溶融して溶着す
る゛（この時、高周波は上金型４２には通電されない）
。A high frequency wave is passed through the core metal 42 and the lower mold 41 to the middle ring 34.
The filter 35 and chamber body 32 are melted and welded (at this time, high frequency is not applied to the upper mold 42).
.

チャンバー本体３２下部（下金型４１と接融する面）が
溶着したらチャンバー本体３２を反転して、溶着してい
ない本体３２上部（上金型４０と接融する面）を反転し
て下金型４１の装着溝４Ｌａに押しあてて溶着する（又
は上金型４０と下金型４１に個別に高周波を通電して溶
着していた）。Once the lower part of the chamber body 32 (the surface to be welded to the lower mold 41) is welded, turn the chamber body 32 over, and then turn the upper part of the chamber body 32 (the surface to be welded to the upper mold 40) that is not welded to the bottom mold. It is pressed against the mounting groove 4La of the mold 41 and welded (or the upper mold 40 and the lower mold 41 were individually energized with high frequency to weld).

［発明が解決しようとする課題］ しかしながらこれらの方法では次のような問題点があっ
た。[Problems to be Solved by the Invention] However, these methods have the following problems.

■第７図の一部拡大図に示すようにチャン／＜　−本体
３２、フィルター３５、中リング３４を構成する溶融樹
脂が溶着部の内部に内留り３９となって隆起したり、ま
た中リング３４が本体３２内面に突出しているため、血
液の流れを部分的に阻害し、血液が残血、クロットしや
すい原因となっていた。■As shown in the partially enlarged view of FIG. Since the ring 34 protrudes from the inner surface of the main body 32, it partially obstructs the flow of blood, causing blood to remain and clot easily.

■中リング３４を使用するため部品点数が多くなり中リ
ング３４をフィルター３５に装着する工程が多くなり、
コスト高になっていた。■Since the middle ring 34 is used, the number of parts increases, and the process of attaching the middle ring 34 to the filter 35 increases.
The cost was getting high.

■本体の下部（下金型との接触面）を溶着した後、反転
して本体の上部を下金型と接触させて溶着しなければな
らなかったので反転する分だけの工程が余分である。■After welding the lower part of the main body (the surface that contacts the lower mold), we had to turn it over and weld the upper part of the main body in contact with the lower mold, so there was an extra step for reversing it. .

１問題点を解決するための手段］ そこで、本発明者は、以上の課題を解決するために鋭意
検討を重ねた結果、次の発明を提案するに到った。Means for Solving Problem 1] Therefore, as a result of intensive studies to solve the above problems, the present inventor has proposed the following invention.

（１）ドリップチャンバー本体１４を下金型６の装着溝
６ａに固定し、 （２）フィルター１６を芯金７の本体９に装着した後、
該フィルター１６をドリップチャンバー本体１４内壁に
嵌挿し く３）Ｊ：金型５の装着溝５ａをドリップチャンバー本
体１４に装着し く４）上金型５と下金型６よりドリップチャンバー本体
１４を挟持して高周波を芯金７、下金型６に通電して下
金型６に通電された高周波を、アース線１３を介して、
上金型５にも同時に通電する。(1) After fixing the drip chamber main body 14 to the mounting groove 6a of the lower mold 6, (2) mounting the filter 16 to the main body 9 of the core bar 7,
Insert the filter 16 into the inner wall of the drip chamber main body 14. 3) J: Install the mounting groove 5a of the mold 5 into the drip chamber main body 14. 4) Hold the drip chamber main body 14 between the upper mold 5 and the lower mold 6. Then, the high frequency is applied to the core metal 7 and the lower mold 6, and the high frequency energized to the lower mold 6 is passed through the ground wire 13.
The upper mold 5 is also energized at the same time.

（５）フィルター１６及びドリップチャンバー本体１４
の溶融樹脂を前記芯金７の本体９に嵌挿されたリング部
１０の外周面に形成された溝部１２に吸収させて溶着さ
せる。(5) Filter 16 and drip chamber body 14
The molten resin is absorbed into the groove 12 formed on the outer peripheral surface of the ring portion 10 fitted into the main body 9 of the core metal 7 and welded.

（６）以上の（１）〜（５）の工程によりフィルター１
６をドリップチャンバー本体１４内壁に溶着させる医療
用ドリップチャンバーのフィルター溶着方法を提供する
ものである。(6) Through the steps (1) to (5) above, the filter 1
6 to the inner wall of the drip chamber main body 14 is provided.

［作用］ フィルター１６をドリップチャンバー本体１４内壁に固
定する際には、芯金７のリング部１０に形成された点材
１１がフィルター１６をドリップチャンバー本体１４内
壁に強固に押し付けて固定しフィルター１６をドリップ
チャンバー本体１４内壁に融着する時は、フィルター１
６とドリップチャンバーを構成する溶融樹脂が溝部１２
で吸収されるので溶着部の表面がフラットに仕上る。こ
のため溶融樹脂がドリップチャンバー本体１４内壁に溶
出したり隆起したりすることがない。[Function] When fixing the filter 16 to the inner wall of the drip chamber main body 14, the dots 11 formed on the ring portion 10 of the core bar 7 firmly press and fix the filter 16 against the inner wall of the drip chamber main body 14. When welding the filter 1 to the inner wall of the drip chamber main body 14,
6 and the molten resin constituting the drip chamber are in the groove 12.
Since it is absorbed, the surface of the welded area is finished flat. Therefore, the molten resin does not elute or bulge on the inner wall of the drip chamber main body 14.

［実施例］ 第１図（ａ）は、本発明のドリップチャンバーのフィル
ター溶着方法に使用する高周波発振器１の概略図である
。高周波発振器１は、高周波の周波数、金型のプレス圧
力等を制御する制御装置２、高周波発振器本体３内に配
置された高周波発振装置３ａ、プレス機４、上金型５、
下金型６から構成される。[Example] FIG. 1(a) is a schematic diagram of a high frequency oscillator 1 used in the drip chamber filter welding method of the present invention. The high frequency oscillator 1 includes a control device 2 that controls the frequency of the high frequency, press pressure of the mold, etc., a high frequency oscillator 3a disposed in the high frequency oscillator main body 3, a press machine 4, an upper mold 5,
It is composed of a lower mold 6.

上金型５と下金型６は通電時に高周波が伝達できるよう
に銅製の薄片からなるアース１３線より連結されている
。The upper mold 5 and the lower mold 6 are connected by a ground wire 13 made of a thin piece of copper so that high frequency waves can be transmitted when electricity is applied.

第１図（ｂ）は、第１図（ａ）の上金型５と下金型６の
拡大図で、ドリップチャンバー本体１４の装着溝５ａ、
６ａが形成され、深さＤＩは、本体１４の半径Ｒと同程
度に形成され、直径Ｄ２は芯金７のリング部１ｏの直径
Ｄ３より若干大きく形成されている。FIG. 1(b) is an enlarged view of the upper mold 5 and lower mold 6 of FIG. 1(a), and shows the mounting groove 5a of the drip chamber body 14,
6a is formed, the depth DI is formed to be approximately the same as the radius R of the main body 14, and the diameter D2 is formed slightly larger than the diameter D3 of the ring portion 1o of the core metal 7.

第２図（ａ）は、フィルター１６を嵌挿してドリップチ
ャンバー本体１４内壁に挟持するための芯金７の概略図
である。FIG. 2(a) is a schematic diagram of the core bar 7 into which the filter 16 is inserted and held between the inner walls of the drip chamber main body 14.

芯金７は、鉄、ステンレス、黄銅、ジュラルミン等の導
電性材料からなる把手８とプラスチック等の非導電性材
料からなる本体９がら構成されていえうる。The core bar 7 may be composed of a handle 8 made of a conductive material such as iron, stainless steel, brass, or duralumin, and a main body 9 made of a non-conductive material such as plastic.

本体９には、前述の導電性材料からなり、かつ第２図（
ｂ）、（Ｃ）の一部拡大図に示すように外周面に煮付１
１、ＩＩＣと溝部１２．１２ｃが形成された（いわゆる
ａ−レット仕上げされた）リング部１０が嵌挿されてい
る。煮付１１、ｌｌｃは第２図（ｂ）に示すように格子
状に形成してもよいし、第２図（Ｃ）に示すように不規
則に点状に形成してもよい。The main body 9 is made of the above-mentioned conductive material and has a structure shown in FIG.
As shown in the partially enlarged view of b) and (C), the outer circumferential surface has 1
1. A ring portion 10 in which an IIC and a groove portion 12.12c are formed (so-called A-let finish) is inserted. The boiling points 11, llc may be formed in a grid shape as shown in FIG. 2(b), or may be formed in irregular dots as shown in FIG. 2(C).

さらに、本体１４には、第２図（ｄ）の−部拡大図にも
示すように外周面に０面カットのテーパー１８を形成し
たプラスチック等の非導電性材料からなる基端部１７が
一体に形成されている。Furthermore, as shown in the enlarged view of the minus part in FIG. 2(d), the main body 14 is integrally formed with a base end portion 17 made of a non-conductive material such as plastic and having a zero-cut taper 18 formed on the outer circumferential surface. is formed.

次に本発明のドリップチャンバーのフィルター溶着方法
について説明する。第３図に示すようにチャンバー本体
１４を、下金型６の装着溝６ａに固定した後、メツシュ
フィルター１６を、芯金７の本体９に装着して、本体９
と共にドリップチャンバー本体１４内壁に固定する。続
いて高周波を発振して、下金型６、芯金７に通電し下金
型６に通電された高周波をアース線１３を介して上金型
５にも同時に通電すると共に、プレス４９４を作動させ
て、上金型５を垂下してドリップチャンバー本体１４を
溝５ａにより挟持する。Next, the drip chamber filter welding method of the present invention will be explained. As shown in FIG. 3, after the chamber main body 14 is fixed to the mounting groove 6a of the lower mold 6, the mesh filter 16 is mounted on the main body 9 of the core bar 7, and the mesh filter 16 is mounted on the main body 9 of the core bar 7.
It is also fixed to the inner wall of the drip chamber main body 14. Next, a high frequency wave is oscillated to energize the lower mold 6 and the core metal 7, and the high frequency wave energized to the lower mold 6 is simultaneously energized to the upper mold 5 via the ground wire 13, and the press 494 is activated. Then, the upper mold 5 is lowered to sandwich the drip chamber main body 14 between the grooves 5a.

上金型５と下金型６及びリング部１０により挟持された
メツシュフィルター１６及びドリップチャンバー本体１
４の樹脂の部分は、高周波熱により溶融して融着する。Mesh filter 16 and drip chamber main body 1 held between upper mold 5, lower mold 6, and ring part 10
The resin portion 4 is melted and fused by high frequency heat.

上金型５と下金型６はアース１３により接続されている
ので、高周波熱がドリップチャンバー本体１４の周囲に
瞬時に均等に伝わるので均一に溶融できる。Since the upper mold 5 and the lower mold 6 are connected by the ground 13, the high frequency heat is instantaneously and evenly transmitted around the drip chamber main body 14, so that uniform melting can be achieved.

芯金７の本体８には、ローレット仕上げされたリング部
１０が嵌挿されているために、フィルター１６をドリッ
プチャンバー本体１４内壁へ固定する際には、煮付１１
がフィルター１６をドリップチャンバー本体１４内壁に
強固に挟持する役割を果たしフィルター１６を規則正し
く溶着することができる。さらに、フィルター１６をド
リップチャンバー本体１４内壁に溶着固定する際には、
ドリップチャンへ−本体１４とフィルター１６を構成す
る溶融樹脂を溝１２で全て吸収してしまうので、溶融樹
脂が、リング部１０の当接された箇所以外のところに流
出することはない。Since the knurled ring portion 10 is fitted into the main body 8 of the core bar 7, when fixing the filter 16 to the inner wall of the drip chamber main body 14, the boiling 11
serves to firmly sandwich the filter 16 to the inner wall of the drip chamber main body 14, and allows the filter 16 to be regularly welded. Furthermore, when welding and fixing the filter 16 to the inner wall of the drip chamber main body 14,
Since all of the molten resin constituting the main body 14 and the filter 16 is absorbed by the groove 12 into the drip chamber, the molten resin will not flow out to a place other than where the ring portion 10 is in contact.

このように溝１２は、溶融樹脂を全て吸収してしまうた
め溝１２内に流入し充填された溶融樹脂の溶着部表面を
フラットにすることができるので、溶融樹脂がドリップ
チャンバー本体１４内壁面に隆起することもない。Since the groove 12 absorbs all the molten resin, the surface of the welded part of the molten resin that flows into the groove 12 and is filled can be made flat. It doesn't bulge out either.

さらに、リング部１０と隣接する基端部１７の外周面に
０面カットのテーパー１８が形成されているので、第４
図の拡大図に示すようにフィルター１６の溶着後は、ド
リップチャンバー本体１４内壁面に、血流方向に沿った
テーパー１９が形成されることになリ、ドリップチャン
バー本体１４内を通過する血液の流れがより一層スムー
ズになり、血液が滞留することはない。Furthermore, since a taper 18 with a 0-plane cut is formed on the outer peripheral surface of the proximal end portion 17 adjacent to the ring portion 10, the fourth
As shown in the enlarged view of the figure, after the filter 16 is welded, a taper 19 along the blood flow direction is formed on the inner wall surface of the drip chamber main body 14, so that the blood passing through the drip chamber main body 14 is The flow becomes smoother and blood does not stagnate.

［発明の効果］ 以上説明したように本発明では、 ■フィルター１６とドリップチャンバー本体１４の内壁
の溶着部がフラットに仕上るので、残血、血栓の発生が
ほとんどない。[Effects of the Invention] As explained above, in the present invention, (1) the welded portion between the filter 16 and the inner wall of the drip chamber main body 14 is finished flat, so there is almost no residual blood or thrombus.

さらに、基端部１７の外周面をテーパー１８に形成する
ことにより、ドリップチャンバー本体１４の内壁に、血
流方向に沿ったテーパー１９が形成されるので、ドリッ
プチャンバー本体１４内を通過する血液の流れがより一
層スムーズになり、滞留がなくなる。Furthermore, by forming the outer peripheral surface of the proximal end portion 17 into a taper 18, a taper 19 along the blood flow direction is formed on the inner wall of the drip chamber main body 14, so that blood passing through the drip chamber main body 14 can be The flow becomes smoother and there is no stagnation.

■ローレット仕上げされたリング部１０を有する芯金を
使用するため従来のように中リング３４を溶着する手間
が省けて、コストダウンが図れる。(2) Since a core metal having a knurled ring portion 10 is used, the conventional process of welding the middle ring 34 is eliminated, resulting in cost reduction.

■さらに上金型５と下金型６をアース線１３により接続
して同時に高周波を通電するので均一にフィルター１６
とドリップチャンバー本体１４を溶着できる。■Furthermore, since the upper mold 5 and lower mold 6 are connected by a ground wire 13 and high frequency current is applied at the same time, the filter 16 is uniformly applied.
and the drip chamber main body 14 can be welded together.

等の効果を有する優れた発明である。This is an excellent invention that has the following effects.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は高周波発振器の概略図、第２図は第１図の金型
部分の拡大図、第３図は本発明のフィルターの溶着方法
を示す概略図、第４図はフィルターの溶着後のフィルタ
ーとドリップチャンバー本体内壁面付近の拡大図、第５
図はドリップチャンバーの概略図、第６図は従来のフィ
ルターの溶着方法を示す概略図、第７図は第６図の方法
で溶着したフィルターとドリップチャンバー本体内壁面
伺近の拡大図を示す。 図中、１は高周波発振器、２は制御装置、３は高周波発
振器本体、３ａは高周波発振装置、４はプレス機、５は
上金型、６は下金型、５ａ、６ａは装着溝、７は芯金、
８は把手、９は本体、ｌＯはリング部、１１は煮付、１
２は溝、１３はアース、１４はドリップチャンバー本体
、１６はフィルター、１７は基端部、１８．１９はテー
パーを示す。 特許出願人　　川澄化学工業株式会社 第４図 第５図 第７図 第６図Fig. 1 is a schematic diagram of a high-frequency oscillator, Fig. 2 is an enlarged view of the mold part in Fig. 1, Fig. 3 is a schematic diagram showing the filter welding method of the present invention, and Fig. 4 is a diagram after welding the filter. Enlarged view of filter and drip chamber inner wall surface, 5th
The figure is a schematic diagram of a drip chamber, FIG. 6 is a schematic diagram showing a conventional filter welding method, and FIG. 7 is an enlarged view of the filter welded by the method of FIG. 6 and a close view of the inner wall surface of the drip chamber main body. In the figure, 1 is a high frequency oscillator, 2 is a control device, 3 is a high frequency oscillator main body, 3a is a high frequency oscillator, 4 is a press machine, 5 is an upper mold, 6 is a lower mold, 5a, 6a are mounting grooves, 7 is the core metal,
8 is the handle, 9 is the main body, 1O is the ring part, 11 is the boiler, 1
2 is a groove, 13 is a ground, 14 is a drip chamber body, 16 is a filter, 17 is a base end, and 18 and 19 are tapers. Patent applicant Kawasumi Chemical Industry Co., Ltd. Figure 4 Figure 5 Figure 7 Figure 6

Claims (1)

【特許請求の範囲】 本体内にフィルターを装填した医療用ド リップチャンバーの溶着方法において （１）ドリップチャンバー本体を下金型の装着溝に固定
し （２）フィルターを芯金の本体に装着した 後、該フィルターをドリップチャンバー本体内壁に嵌挿
し （３）上金型の装着溝をドリップチャンバー本体に装着
し （４）上金型と下金型よりドリップチャン バー本体を峡持して高周波を芯金、下金型に通電して下
金型に通電された高周波を、アース線を介して、上金型
にも同時に通電する。 （５）フィルター及びドリップチャンバー本体の溶融樹
脂を前記芯金の本体に嵌挿されたリング部の外周面に形
成された溝部に吸収させて溶着させる。 （６）以上の（１）〜（５）の工程により フィルターをドリップチャンバー内壁に溶着させること
を特徴とする医療用ドリップチャンバーのフィルターの
溶着方法。[Claims] In a method for welding a medical drip chamber in which a filter is loaded into the main body, (1) the drip chamber main body is fixed in the mounting groove of the lower mold, (2) the filter is mounted on the main body of the core metal, and then , insert the filter into the inner wall of the drip chamber body, (3) attach the mounting groove of the upper mold to the drip chamber body, (4) hold the drip chamber body between the upper mold and the lower mold, and apply high frequency waves to the core metal. , the lower mold is energized, and the high frequency wave energized to the lower mold is simultaneously energized to the upper mold via the ground wire. (5) The molten resin of the filter and the drip chamber main body is absorbed and welded into the groove formed on the outer circumferential surface of the ring portion inserted into the main body of the core bar. (6) A method for welding a filter for a medical drip chamber, which comprises welding the filter to the inner wall of the drip chamber by the steps (1) to (5) above.
JP2854088A 1988-02-09 1988-02-09 Medical drip chamber and filter welding method for medical drip chamber Expired - Lifetime JPH0687897B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2854088A JPH0687897B2 (en) 1988-02-09 1988-02-09 Medical drip chamber and filter welding method for medical drip chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2854088A JPH0687897B2 (en) 1988-02-09 1988-02-09 Medical drip chamber and filter welding method for medical drip chamber

Publications (2)

Publication Number Publication Date
JPH01204676A true JPH01204676A (en) 1989-08-17
JPH0687897B2 JPH0687897B2 (en) 1994-11-09

Family

ID=12251499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2854088A Expired - Lifetime JPH0687897B2 (en) 1988-02-09 1988-02-09 Medical drip chamber and filter welding method for medical drip chamber

Country Status (1)

Country Link
JP (1) JPH0687897B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026884A1 (en) * 1999-10-14 2001-04-19 Kabushiki Kaisha Top Method of connection with synthetic resin member
CN104800922A (en) * 2015-04-30 2015-07-29 江西科伦医疗器械制造有限公司 Drip chamber of infusion apparatus and assembly technology thereof
CN108744137A (en) * 2018-08-22 2018-11-06 威海福瑞机器人有限公司 A kind of blood transfusion apparatus strainer is automatically separated and assembling device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026884A1 (en) * 1999-10-14 2001-04-19 Kabushiki Kaisha Top Method of connection with synthetic resin member
US7198746B1 (en) 1999-10-14 2007-04-03 Kabushiki Kaisha Top Method of connection with synthetic resin member
CN104800922A (en) * 2015-04-30 2015-07-29 江西科伦医疗器械制造有限公司 Drip chamber of infusion apparatus and assembly technology thereof
CN108744137A (en) * 2018-08-22 2018-11-06 威海福瑞机器人有限公司 A kind of blood transfusion apparatus strainer is automatically separated and assembling device
CN108744137B (en) * 2018-08-22 2024-02-27 威海福瑞机器人有限公司 Automatic separation and assembly device for blood transfusion device filter screen

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