JP2017176604A5

JP2017176604A5 -

Info

Publication number: JP2017176604A5
Application number: JP2016070385A
Authority: JP
Filing date: 2016-03-31
Publication date: 2019-04-11
Anticipated expiration: 2036-03-31

Description

本実施形態では、支柱部材３２ｇ，３２ｇは、略円弧状の断面形状を有する棒状（柱状）の部材で形成されている。また、支柱部材３２ｇ，３２ｇは、その長手方向が第１回転操作部材３２の板面（円形陥没部３２ｄの底面）に対して略直角方向（回転中心軸の方向）に沿うように立設されている。支柱部材３２ｇ，３２ｇの高さ（長手方向の寸法）は、後述する第２回転操作部材３３と一体化した状態（第１回転操作部材３２および第２回転操作部材３３が外力によって変形していないとき）において、その先端面が僅かな間隙をもって該第２回転操作部材３３の内面に対向するように設定されている。 In the present embodiment, the support members 32g and 32g are formed of rod-shaped (columnar) members having a substantially arc-shaped cross-sectional shape. The support members 32g and 32g are erected so that the longitudinal direction thereof is substantially perpendicular to the plate surface of the first rotation operation member 32 (the bottom surface of the circular recess 32d) (the direction of the rotation center axis). ing. The support members 32g and 32g are in a height (longitudinal dimension) integrated with a second rotation operation member 33 described later (the first rotation operation member 32 and the second rotation operation member 33 are not deformed by an external force). ), The tip surface is set to face the inner surface of the second rotation operation member 33 with a slight gap.

このように構成された操作部３がグリップ表部材４ａの保持部４２ａとグリップ裏部材４ｂの保持部４２ｂとで挟み込まれて一体化された際には、固定操作部材３１はグリップ表部材４ａおよびグリップ裏部材４ｂに固定されるとともに、環状突出部３６ａが保持部４２ａに形成された円形凹陥部（不図示）に僅かな間隙をもって遊嵌され、環状突出部３６ｂが保持部４２ｂに形成された円形凹陥部（不図示）に僅かな間隙をもって遊嵌されることにより、回転操作部材３２，３３がグリップ部４（保持部４２ａ，４２ｂ）に対して回転自在に保持されるようになっている。
When the operation unit 3 configured as described above is sandwiched and integrated between the holding portion 42a of the grip surface member 4a and the holding portion 42b of the grip back member 4b, the fixed operation member 31 is connected to the grip surface member 4a and the grip surface member 4a. While being fixed to the grip back member 4b, the annular protrusion 36a was loosely fitted in a circular recess (not shown) formed in the holding part 42a with a slight gap, and the annular protrusion 36b was formed in the holding part 42b. The rotary operation members 32 and 33 are rotatably held with respect to the grip part 4 (holding parts 42a and 42b) by loosely fitting with a circular recess (not shown) with a slight gap. .

Claims

カテーテルチューブと、
前記カテーテルチューブの遠位端近傍にそれぞれの遠位端が接続された第１ワイヤおよび第２ワイヤと、
前記カテーテルチューブの近位端に設けられた操作部とを備え、
前記操作部は、
第１保持部および第２保持部と、
前記第１保持部および前記第２保持部に挟み込まれた状態で、該第１保持部および該第２保持部に回転自在に保持された回転操作部材と、
前記第１保持部および前記第２保持部の略中央部分を互いに近接する方向に解除可能に押圧して、前記回転操作部材の回転を規制する回転規制手段とを備え、
前記回転操作部材は、
回転中心を中心とする略円弧状で第１端部および第２端部を有する円弧状溝が形成された第１回転操作部材と、
前記円弧状溝の前記第１端部に近い側に摺動可能に遊嵌された第１可動部材と、
前記円弧状溝の前記第２端部に近い側に摺動可能に遊嵌された第２可動部材と、
前記第１回転操作部材の内面との間に画成される内部空間に前記第１可動部材および前記第２可動部材が収容された状態で、該第１回転操作部材に一体的に取り付けられる第２回転操作部材とを備え、
前記第１回転操作部材および前記第２回転操作部材の一方の内面に、少なくとも前記回転規制手段により前記第１保持部および前記第２保持部の略中央部分が互いに近接する方向に押圧された場合において、その先端面が該第１回転操作部材および該第２回転操作部材の他方の内面に当接する、支柱部材を設けたことを特徴とする先端可動カテーテル。 A catheter tube;
A first wire and a second wire each having a distal end connected in the vicinity of the distal end of the catheter tube;
An operation portion provided at the proximal end of the catheter tube,
The operation unit is
A first holding part and a second holding part;
A rotation operation member rotatably held by the first holding unit and the second holding unit in a state of being sandwiched between the first holding unit and the second holding unit;
A rotation restricting means for restricting the rotation of the rotation operation member by releasably pressing the first holding portion and the substantially central portion of the second holding portion in directions close to each other;
The rotation operation member is
A first rotation operation member having a substantially arc shape centered on the rotation center and having an arc-shaped groove having a first end and a second end;
A first movable member slidably fitted on the side of the arcuate groove close to the first end;
A second movable member slidably fitted on the side of the arcuate groove close to the second end,
In a state where the first movable member and the second movable member are accommodated in an internal space defined between the inner surface of the first rotational operation member, the first rotational operation member is integrally attached to the first rotational operation member. A two-rotation operation member,
The inner surface of one of the first rotation operation member and the second rotation operation member is pressed by at least the rotation restricting means in a direction in which the substantially central portions of the first holding portion and the second holding portion are close to each other. A distal end movable catheter characterized by comprising a strut member whose tip surface abuts against the other inner surface of the first rotation operation member and the second rotation operation member.

前記操作部は、前記第１保持部および前記第２保持部に固定される固定操作部材を備え、
前記第１保持部は、その中心部に第１貫通穴を有し、
前記第２保持部は、その中心部に前記第１貫通穴に対応する第２貫通穴を有し、
前記回転操作部材は、その中心部に前記第１貫通穴および前記第２貫通穴に対応する第３貫通穴を有し、
前記回転規制手段は、
略円柱状の軸部の一端部に前記第２貫通穴よりも大きいフランジ部を、他端部に雌ねじ部を有し、該雌ねじ部が前記第２貫通穴を介して前記第３貫通穴に挿入された回転軸部材と、
前記第１貫通穴よりも小径の首部の一端部に前記第１貫通穴よりも大きい頭部を、他端部に前記回転軸部材の前記雌ねじ部に螺合される雄ねじ部を有するノブ部材とを備え、
前記第１回転操作部材および前記第２回転操作部材は、第１方向および該第１方向とは逆の第２方向に所定角度だけ回転するように前記固定操作部材に取り付けられ、
前記第１可動部材は、前記回転操作部材を前記第１方向に回転させた場合には、前記第１端部が当接することにより前記回転操作部材の回転に従って回転し、
前記第１可動部材には該第１可動部材が前記第１方向に回転された場合に、前記第１ワイヤが引っ張られるように該第１ワイヤの近位端が接続されており、
前記第２可動部材は、前記回転操作部材を前記第２方向に回転させた場合には、前記第２端部が当接することにより前記回転操作部材の回転に従って回転し、
前記第２可動部材には該第２可動部材が前記第２方向に回転された場合に、前記第２ワイヤが引っ張られるように該第２ワイヤの近位端が接続されていることを特徴とする請求項１に記載の先端可動カテーテル。 The operation part includes a fixed operation member fixed to the first holding part and the second holding part,
The first holding portion has a first through hole at the center thereof,
The second holding portion has a second through hole corresponding to the first through hole at the center thereof,
The rotation operation member has a third through hole corresponding to the first through hole and the second through hole at the center thereof,
The rotation restricting means is
A flange portion larger than the second through hole is provided at one end portion of the substantially cylindrical shaft portion, and a female screw portion is provided at the other end portion. The female screw portion is connected to the third through hole via the second through hole. The inserted rotating shaft member;
A knob member having a head larger than the first through-hole at one end of the neck having a smaller diameter than the first through-hole, and a male screw part screwed into the female screw part of the rotary shaft member at the other end; With
The first rotation operation member and the second rotation operation member are attached to the fixed operation member so as to rotate by a predetermined angle in a first direction and a second direction opposite to the first direction,
The first movable member rotates in accordance with the rotation of the rotation operation member by contacting the first end when the rotation operation member is rotated in the first direction;
A proximal end of the first wire is connected to the first movable member so that the first wire is pulled when the first movable member is rotated in the first direction;
The second movable member rotates in accordance with the rotation of the rotation operation member by contacting the second end when the rotation operation member is rotated in the second direction,
The proximal end of the second wire is connected to the second movable member so that the second wire is pulled when the second movable member is rotated in the second direction. The tip movable catheter according to claim 1 .

前記支柱部材は、前記第３貫通穴の周囲近傍の互いに略１８０度対向する位置に配置された一対の部材であることを特徴とする請求項２に記載の先端可動カテーテル。 3. The distal movable catheter according to claim 2, wherein the strut members are a pair of members disposed at positions that are substantially 180 degrees opposite each other in the vicinity of the periphery of the third through hole.