JP7295562B2 - Suction tube with blade - Google Patents

Suction tube with blade Download PDF

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JP7295562B2
JP7295562B2 JP2019134191A JP2019134191A JP7295562B2 JP 7295562 B2 JP7295562 B2 JP 7295562B2 JP 2019134191 A JP2019134191 A JP 2019134191A JP 2019134191 A JP2019134191 A JP 2019134191A JP 7295562 B2 JP7295562 B2 JP 7295562B2
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suction tube
main body
blade
central axis
medical
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JP2020089713A (en
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謙剛 田中
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YAMAGA CL LLC
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YAMAGA CL LLC
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Description

本発明は医療用の吸引管に関する。より詳しく説明すると，本発明は，筒の内部に刃を有する吸引管に関する。 The present invention relates to a suction tube for medical use. More specifically, the present invention relates to a suction tube having a blade inside the barrel.

特開平８－３３６５９５号公報には，刃を有する吸引管が記載されている。 Japanese Patent Application Laid-Open No. 8-336595 describes a suction tube having blades.

特開平８－３３６５９５号公報JP-A-8-336595

吸引管は，通常，施術中に対象となる液体を吸収するために用いられるのみである。一方，特に，はさみを開閉しにくいような狭い患部での施術の場合，吸引管で液体を吸収するついでに，組織や対象物を切除したい場合がある。そのような場合，医療機器を取り換えるのは煩雑である。よって，液体を回収するのみならず，組織をも切除できる医療機器が望まれた。 Suction tubes are usually only used to absorb the target fluid during the procedure. On the other hand, especially in the case of treatment in a narrow affected area where it is difficult to open and close the scissors, there are cases where it is desired to excise tissue or an object while absorbing liquid with a suction tube. In such cases, replacing the medical device is cumbersome. Therefore, there is a demand for a medical device that can not only recover liquid but also excise tissue.

本発明は，基本的には，医療用の細い吸引管の内部に，中心方向に向けられた刃を設けることで，切除対象物を吸引管内に導いて，吸引管を回転させることで，切除対象を容易に切除でき，しかも切除した対象を容易に回収できるという知見に基づく。 Basically, the present invention provides a thin medical suction tube with a blade directed toward the center, guides an object to be resected into the suction tube, and rotates the suction tube to perform resection. It is based on the knowledge that the object can be easily resected and the resected object can be easily recovered.

この明細書により開示される最初の発明は，医療用吸引管１（吸引管１）に関する。
この吸引管１は，筒状の本体部３と，本体部３と吸引装置５とを接続する接続部７とを有する医療用吸引管１である。
そして，本体部３の先端領域内部には，組織を切除するための刃９が設けられている。 The first invention disclosed by this specification relates to a medical suction tube 1 (suction tube 1).
This suction tube 1 is a medical suction tube 1 having a cylindrical main body 3 and a connecting part 7 connecting the main body 3 and a suction device 5 .
A blade 9 for excising tissue is provided inside the tip region of the main body 3 .

この吸引管１の好ましい例は，以下のものである。
刃９が，本体部内部に本体部の中心軸１１に対して傾斜して存在し，縁部が本体部内部と接する中空状の刃である。本体部の先端領域は，刃にそって本体部の中心軸に対して傾斜した形状を有する。 Preferred examples of this suction tube 1 are as follows.
The blade 9 is a hollow blade that exists inside the main body at an angle to the central axis 11 of the main body, and whose edge contacts the inside of the main body. The tip region of the body has a shape that is inclined with respect to the central axis of the body along the blade.

この吸引管１の好ましい例は，以下のものである。
刃は，縁部が本体部内部と接する，１又は複数の刃部を有する。 Preferred examples of this suction tube 1 are as follows.
The blade has one or more blades whose edges contact the interior of the body.

この吸引管１の好ましい例は，以下のものである。
刃は，縁部が本体部内部と接する複数の刃部を有し，複数の刃部は，本体部の中心軸に対して傾斜して存在する。 Preferred examples of this suction tube 1 are as follows.
The blade has a plurality of blade portions whose edges are in contact with the inside of the body portion, and the plurality of blade portions exist at an angle to the central axis of the body portion.

この吸引管１の好ましい例は，以下のものである。
本体部を回転させるための回転機構を含む。 Preferred examples of this suction tube 1 are as follows.
A rotation mechanism for rotating the body is included.

この吸引管１の好ましい利用例は，以下の組織回収装置である。
この組織回収装置は，吸引管１と，本体部と接続され，吸引された対象物が収容される溶液槽とを含む，組織回収装置である。 A preferred application example of this suction tube 1 is the following tissue recovery device.
This tissue recovery device is a tissue recovery device that includes a suction tube 1 and a solution tank that is connected to the main body and stores the suctioned object.

本発明の吸引管は，医療用の細い吸引管の内部に中心方向に向けられた刃が存在するので，切除対象物を吸引管内に導いて，吸引管を回転させることで，切除対象を容易に切除でき，しかも切除した対象を容易に回収できる。 Since the aspiration tube of the present invention has a blade directed toward the center inside the narrow aspiration tube for medical use, the resection target can be easily removed by guiding the resection target into the aspiration tube and rotating the aspiration tube. It can be resected quickly, and the resected object can be easily recovered.

図１は，吸引管の利用例を示す概念図である。FIG. 1 is a conceptual diagram showing a usage example of a suction tube. 図２は，吸引管の先端部の例を示す概念図である。図２Ａは吸引管の先端部の断面図を示し，図２Ｂは図２ＡのＸ－Ｘ断面図を示す。FIG. 2 is a conceptual diagram showing an example of the tip of the suction tube. 2A shows a cross-sectional view of the tip of the suction tube, and FIG. 2B shows a cross-sectional view taken along line XX of FIG. 2A. 図３は，切刃部分が，本体部の中心軸に対して垂直方向より傾斜して延びている例を示す概念図である。図３Ａは，切刃部分が，本体部の中心軸に対して垂直方向より上方に向かって傾斜して延びていてるものの例を示し，図３Ｂは，切刃部分が，本体部の中心軸に対して垂直方向より下方に向かって傾斜して延びていているものの例を示す。FIG. 3 is a conceptual diagram showing an example in which the cutting edge portion extends obliquely from the vertical direction with respect to the central axis of the main body. FIG. 3A shows an example in which the cutting edge portion extends obliquely upward from the vertical direction with respect to the central axis of the main body portion, and FIG. On the other hand, an example of one extending downward from the vertical direction is shown. 図４は，刃が，本体部内部に本体部の中心軸に対して傾斜して存在し，縁部が本体部内部と接する中空状の刃である吸引管の例を示す概念図である。FIG. 4 is a conceptual diagram showing an example of a suction tube that is a hollow blade that exists inside the main body at an angle with respect to the central axis of the main body and that has an edge in contact with the inside of the main body. 図５は，複数の刃部を有する吸引管の例を示す概念図である。図５Ａは吸引管を半分に割った際の概念図である。図５Ｂは，図５Ａの吸引管を上部から見た際の図である。FIG. 5 is a conceptual diagram showing an example of a suction tube having a plurality of blades. FIG. 5A is a conceptual diagram when the suction tube is split in half. FIG. 5B is a top view of the suction tube of FIG. 5A. 図６は，複数枚（３枚）の傾斜しており，切刃部分が，本体部の中心軸に対して垂直方向より傾斜して延びている例を示す概念図である。図６Ａは，吸引管を上方から見た概念図を示し，図６Ｂは，図６ＡのＸ－Ｘ断面図を示し，図６Ｃは，図６ＡのＹ－Ｙ断面図を示す。FIG. 6 is a conceptual diagram showing an example in which a plurality of (three) slanted cutting edge portions extend obliquely from the direction perpendicular to the central axis of the main body. 6A shows a conceptual diagram of the suction tube viewed from above, FIG. 6B shows a cross-sectional view taken along line XX of FIG. 6A, and FIG. 6C shows a cross-sectional view taken along line YY of FIG. 6A. 図７は，本体部を回転させるための回転機構を含む吸引管の例を示す概念図である。FIG. 7 is a conceptual diagram showing an example of a suction tube including a rotating mechanism for rotating the main body.

以下，図面を用いて本発明を実施するための形態について説明する。本発明は，以下に説明する形態に限定されるものではなく，以下の形態から当業者が自明な範囲で適宜修正したものも含む。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments for carrying out the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments described below, and includes appropriate modifications within the scope obvious to those skilled in the art from the following embodiments.

この明細書により開示される最初の発明は，医療用吸引管１（吸引管１）に関する。吸引管は，医療分野（例えば，耳鼻咽喉科用，歯科用，眼科用，涙道手術用，泌尿器科用，外科手術用，内視鏡手術用，腹腔鏡手術用，）や用途（例えば，凝固組織回収用，壊死組織回収用，分泌物回収用，粘液物回収用，血液回収用，涙回収用，唾液回収用）に応じて様々なものがある。 The first invention disclosed by this specification relates to a medical suction tube 1 (suction tube 1). Suction tubes are used in medical fields (for example, otolaryngology, dentistry, ophthalmology, lacrimal surgery, urology, surgery, endoscopic surgery, laparoscopic surgery) and applications (for example, For collection of coagulated tissue, collection of necrotic tissue, collection of secretions, collection of mucus, collection of blood, collection of tears, collection of saliva).

図１は，吸引管の利用例を示す概念図である。図２は，吸引管の先端部の例を示す概念図である。図２Ａは吸引管の先端部の断面図を示し，図２Ｂは図２ＡのＸ－Ｘ断面図を示す。この吸引管１は，筒状の本体部３と，本体部３と吸引装置５とを接続する接続部７とを有する医療用吸引管１である。吸引管は，本体部が直線状の筒状のもの，先端に向かう程径が小さくなる部分を有する円筒状のもの，途中から曲がった部分を有する筒状のものなど，様々な形状のものがある。筒状の本体部３の直径φの例は，０．５ｍｍ以上１ｃｍ以下であり，０．５ｍｍ以上５ｍｍ以下でもよいし，１ｍｍ以上３ｍｍ以下でもよい。本発明は，医療用のはさみの開閉がしにくい微小領域において用いられることが好ましいので，直径φは０．５ｍｍ以上２ｍｍ以下でもよい。図２に示されるように，本体部３の先端領域内部には，組織を切除するための刃９が設けられている。刃９は，縁（峰）の全体又は一部が吸引管の本体部３の内壁と接続されていることが好ましい。そして，組織など対象部分を切る部分（切刃部分）が，吸引管の内部において，吸引管の中心軸方向に向かっていることが好ましい。切刃部分は，本体部３の中心軸に対して垂直方向に延びていてもよいし，上方に傾斜して延びていてもよいし，下方に傾斜して延びていてもよい。 FIG. 1 is a conceptual diagram showing a usage example of a suction tube. FIG. 2 is a conceptual diagram showing an example of the tip of the suction tube. 2A shows a cross-sectional view of the tip of the suction tube, and FIG. 2B shows a cross-sectional view taken along line XX of FIG. 2A. This suction tube 1 is a medical suction tube 1 having a cylindrical main body 3 and a connecting part 7 connecting the main body 3 and a suction device 5 . Aspiration tubes come in a variety of shapes, including those with a straight main body, those with a portion whose diameter decreases toward the tip, and those with a portion that bends in the middle. be. Examples of the diameter φ of the tubular main body 3 are 0.5 mm or more and 1 cm or less, 0.5 mm or more and 5 mm or less, or 1 mm or more and 3 mm or less. Since the present invention is preferably used in a minute area where it is difficult to open and close medical scissors, the diameter φ may be 0.5 mm or more and 2 mm or less. As shown in FIG. 2, a blade 9 for excising tissue is provided inside the tip region of the main body 3 . It is preferable that all or part of the edge (ridge) of the blade 9 is connected to the inner wall of the main body 3 of the suction tube. Further, it is preferable that a portion (cutting edge portion) for cutting a target portion such as a tissue faces toward the center axis direction of the suction tube inside the suction tube. The cutting edge portion may extend in a direction perpendicular to the central axis of the body portion 3, may extend obliquely upward, or may extend obliquely downward.

吸引管は，吸引装置から吸引することで陰圧となる。このため，刃９は，図２Ａに示されるように，先端（図の上部）に近づくほど刃の幅が大きくなるようなテーパー（傾斜）を有するものであること（切刃部分が，本体部３の中心軸に対して，上方に向かうように傾斜して延びていること）が好ましい。そのような刃を有することで，吸引力を高めることができる。一方，図２Ｂに示されるように，刃が中空状（中心軸の周辺には刃が存在しない形状）とすることで，刃９の上部には吸引装置からの吸引が弱まる部分ができることとなり，吸気したくない微小組織がある場合は，刃９の上部に位置させることで，体液などを吸引しつつ，組織を保護できるため，好ましい。そのような観点から，刃の刃渡り（刃の幅：吸引管の内壁から刃先までの距離）は，吸引管の内径をφとした場合，φの１／２０以上１／３以下が好ましく，１／１０以上１／４以下でもよいし，１／１０以上１／５以下でもよい。刃の厚さは，吸引管が微小なので，それに合わせた厚さであればよく，例えば１０μｍ以上１ｍｍ以下でよく，５０μｍ以上０．５ｍｍ以下でもよいし，０．１ｍｍ以上０．５ｍｍ以下でもよい。刃９は，吸引管の先端に存在してもよいし，図２Ａに示されるように，刃の上部を確保し，刃の欠損を避けるため，先端より下方に存在してもよい。図２Ｂのものは，刃が中空円状になっている。一方，刃は弦状であってもよいし，完全な円ではなく，ゆがんだ円状や歯形のように部分部分に存在する状態のものであってもよい。 The suction tube becomes negative pressure by suctioning from the suction device. For this reason, as shown in FIG. 2A, the blade 9 should have a taper (inclination) such that the width of the blade increases as it approaches the tip (upper part of the figure) (the cutting edge part is the body part 3) preferably extends obliquely upward with respect to the central axis of 3). Having such a blade can increase the suction power. On the other hand, as shown in FIG. 2B, by making the blade hollow (a shape in which there is no blade around the central axis), there is a portion at the top of the blade 9 where the suction from the suction device is weakened. If there is a fine tissue that should not be aspirated, positioning it above the blade 9 is preferable because it can protect the tissue while aspirating body fluids and the like. From such a point of view, the blade length (width of the blade: distance from the inner wall of the suction tube to the cutting edge) is preferably 1/20 or more and 1/3 or less of φ, where φ is the inner diameter of the suction tube. /10 or more and 1/4 or less, or 1/10 or more and 1/5 or less. Since the suction tube is very small, the thickness of the blade may be any thickness that matches it. . The blade 9 may be at the tip of the aspiration tube or it may be below the tip to ensure an upper portion of the blade and avoid chipping of the blade, as shown in Figure 2A. The one in FIG. 2B has a hollow circular blade. On the other hand, the blade may be chord-shaped, or it may be not a perfect circle, but a distorted circle or a tooth shape that exists in a partial portion.

図１に示される例では，吸引管１が，ホース２１により吸引装置５と接続されている。そして，ホース２１の途中には，施術者が指で穴をふさげば吸引状態が続き，穴を開放すると吸引力が弱まる穴２３が存在している。この穴２３は，ホース２１といった吸引管と吸引装置とを連結するホース部分に存在してもよい。一方，この穴は，吸引管の接続部７や本体部分の接続部７側の部位に存在してもよい。吸引管は，接続部７があるので，ホースなどから取り外しでき，吸引管１を洗浄したり，吸引管を取り換えたりできるものが好ましい。 In the example shown in FIG. 1, the suction tube 1 is connected to the suction device 5 by means of a hose 21 . In the middle of the hose 21, there is a hole 23 in which the suction continues when the operator closes the hole with a finger, and the suction force weakens when the hole is opened. This hole 23 may be present in a hose portion such as hose 21 that connects the suction tube and the suction device. On the other hand, this hole may exist in the connecting portion 7 of the suction tube or in the portion of the main body portion on the connecting portion 7 side. Since the suction tube has a connection portion 7, it is preferable that the suction tube 1 can be removed from a hose or the like, and the suction tube 1 can be washed or replaced.

図３は，切刃部分が，本体部の中心軸に対して垂直方向より傾斜して延びている例を示す概念図である。図３Ａは，切刃部分が，本体部の中心軸に対して垂直方向より上方に向かって傾斜して延びていてるものの例を示し，図３Ｂは，切刃部分が，本体部の中心軸に対して垂直方向より下方に向かって傾斜して延びていているものの例を示す。図２のものは，刃９が本体部３の内壁から実質的に垂直に伸びているが，図３のものは，刃が傾斜している。図３Ａにおいてθは，切刃部分のテーパの角度を示し，θの例は１度以上４５度以下であり，５度以上３０度以下でもよいし，５度以上２０度以下でもよい。 FIG. 3 is a conceptual diagram showing an example in which the cutting edge portion extends obliquely from the vertical direction with respect to the central axis of the main body. FIG. 3A shows an example in which the cutting edge portion extends obliquely upward from the vertical direction with respect to the central axis of the main body portion, and FIG. On the other hand, an example of one extending downward from the vertical direction is shown. 2, the blade 9 extends substantially vertically from the inner wall of the body 3, whereas in FIG. 3 the blade is inclined. In FIG. 3A, .theta. indicates the taper angle of the cutting edge portion. Examples of .theta.

図４は，刃が，本体部内部に本体部の中心軸に対して傾斜して存在し，縁部が本体部内部と接する中空状の刃である吸引管の例を示す概念図である。この例では，吸引管の先端が注射針のように斜めにカットされており，カットされた先端に沿って刃９が存在している。一方，先端部分が筒状であってもよい。刃９が，本体部内部に本体部の中心軸１１に対して傾斜して存在し，縁部が本体部内部と接する中空状の刃であることで，小さな対象物を，容易に切除できる。本体部の先端領域は，刃にそって本体部の中心軸に対して傾斜した形状を有するものの場合，吸引管自体を注射針のように用いることができ，吸引管本体を用いて，対象を切除することや，組織に吸引管を挿入しつつ，血液などの液体を吸引し続けることができる。傾斜の角度は任意である。傾斜の例は，０度を中心軸１１に垂直とすれば，１度以上７０度以下であり，５度以上４５度以下でもよく，１０度以上３０度以下でもよいし，１０度以上５０度以下でもよい。 FIG. 4 is a conceptual diagram showing an example of a suction tube that is a hollow blade that exists inside the main body at an angle with respect to the central axis of the main body and that has an edge in contact with the inside of the main body. In this example, the tip of the suction tube is obliquely cut like an injection needle, and a blade 9 exists along the cut tip. On the other hand, the tip portion may be cylindrical. Since the blade 9 is a hollow blade that exists inside the main body at an angle with respect to the central axis 11 of the main body and whose edge contacts the inside of the main body, a small object can be easily excised. If the tip region of the body has a shape that is inclined with respect to the central axis of the body along the blade, the suction tube itself can be used like an injection needle, and the body of the suction tube can be used to You can continue to aspirate fluids such as blood while resecting or inserting a suction tube into the tissue. The angle of inclination is arbitrary. Examples of the inclination are 1 degree or more and 70 degrees or less, if 0 degrees is perpendicular to the central axis 11, may be 5 degrees or more and 45 degrees or less, may be 10 degrees or more and 30 degrees or less, or may be 10 degrees or more and 50 degrees. It can be below.

刃は，縁部が本体部内部と接するものであることが好ましい。刃の数は１枚でもよいし，又は複数の刃部を有するものであってもよい。図５は，複数の刃部を有する吸引管の例を示す概念図である。図５に示される例は，刃は，縁部が本体部内部と接する複数の刃部を有し，複数の刃部は，本体部の中心軸に対して傾斜して存在する。このような形状を有すると，対象となる組織などを容易に切除できることとなる。図５Ａは吸引管を半分に割った際の概念図である。図５Ｂは，図５Ａの吸引管を上部から見た際の図である。図５の例では，４枚の刃部が９０度ごとに設置されている。刃先は中心軸方向に面した部分に存在し，吸引管内に挿入された組織などの対象物を切除できる。吸引管が複数の刃９を有する場合，複数の刃９は同じ方向に傾斜していてもよいし（本体部３を展開したとき，刃９向きが，／，／，／，／のようにおよそ平行になる），隣接する刃９が互いに逆方向に傾斜してもよい（本体部３を展開したとき，刃９向きが，／，＼，／，＼のようになる）。 Preferably, the edge of the blade is in contact with the interior of the body. The number of blades may be one, or it may have a plurality of blades. FIG. 5 is a conceptual diagram showing an example of a suction tube having a plurality of blades. In the example shown in FIG. 5, the blade has a plurality of blade portions whose edges are in contact with the inside of the main body, and the plurality of blade portions exist at an angle to the central axis of the main body. With such a shape, the target tissue or the like can be easily excised. FIG. 5A is a conceptual diagram when the suction tube is split in half. FIG. 5B is a top view of the suction tube of FIG. 5A. In the example of FIG. 5, four blades are installed every 90 degrees. The cutting edge exists in the part facing the central axis direction, and can excise an object such as a tissue inserted into the suction tube. When the suction tube has a plurality of blades 9, the plurality of blades 9 may be inclined in the same direction (when the main body 3 is unfolded, the orientation of the blades 9 is /, /, /, /, etc.). approximately parallel), or adjacent blades 9 may be slanted in opposite directions (when the body 3 is unfolded, the orientation of the blades 9 is /, \, /, \).

図６は，複数枚（３枚）の傾斜しており，切刃部分が，本体部の中心軸に対して垂直方向より傾斜して延びている例を示す概念図である。図６Ａは，吸引管を上方から見た概念図を示し，図６Ｂは，図６ＡのＸ－Ｘ断面図を示し，図６Ｃは，図６ＡのＹ－Ｙ断面図を示す。吸引管の本体部を回転させることで，刃の切刃部分により対象となる組織を容易に切除できる。 FIG. 6 is a conceptual diagram showing an example in which a plurality of (three) slanted cutting edge portions extend obliquely from the direction perpendicular to the central axis of the main body. 6A shows a conceptual diagram of the suction tube viewed from above, FIG. 6B shows a cross-sectional view taken along line XX of FIG. 6A, and FIG. 6C shows a cross-sectional view taken along line YY of FIG. 6A. By rotating the main body of the suction tube, the target tissue can be easily excised by the cutting edge of the blade.

図７は，本体部を回転させるための回転機構を含む吸引管の例を示す概念図である。回転機構は，任意要素であるが，回転機構を有すると以下に説明する通り有利な効果がある。例えば，回転機構１３は中空であり，吸引管による液や対象物の吸引を妨げない。この吸引管は，圧を逃がすための穴があってもよい。回転機構１３の例は，ボールベアリングといった回転駆動機構を用いて，回転機構１３を指又は手で回転させると，それに伴って，接続部７に対して，本体部３が相対的に回転移動するように駆動できるものである。回転機構１３を指で移動させると，吸引管の本体部分の回転移動に連れて，刃が回転するので，施術中に容易に対象となる組織を切除できる。また，施術中に吸引管の吸引が悪くなった場合にも，回転機構１３を回転させることで，本体部に振動を与え，詰まりを防止できるので，施術の効率化にも寄与することとなる。また，小型モータやアクチュエータにより，接続部７に対して，本体部３を回転できるように駆動してもよい。回転機構１３は，図示しない電源と接続されており，施術者が電源をＯＮにする（回転動作を開始する）と，回転機構１３が駆動され，本体部３が電力により回転するようにされている。このようにすれば，効果的に，対象となる組織などを切除できる。。 FIG. 7 is a conceptual diagram showing an example of a suction tube including a rotating mechanism for rotating the main body. The rotation mechanism is an optional element, but having the rotation mechanism has an advantageous effect as explained below. For example, the rotating mechanism 13 is hollow and does not interfere with the suction of the liquid or the object by the suction tube. This suction tube may have a hole for relief of pressure. An example of the rotating mechanism 13 uses a rotating drive mechanism such as a ball bearing, and when the rotating mechanism 13 is rotated by a finger or hand, the body portion 3 rotates relative to the connecting portion 7 accordingly. It can be driven like this. When the rotating mechanism 13 is moved by a finger, the blade rotates along with the rotational movement of the main body of the aspiration tube, so that the target tissue can be easily excised during the operation. In addition, even if the suction of the suction tube becomes poor during the treatment, by rotating the rotating mechanism 13, it is possible to vibrate the main body and prevent clogging, which contributes to the efficiency of the treatment. . Alternatively, a small motor or actuator may be used to drive the main body 3 to rotate with respect to the connecting portion 7 . The rotating mechanism 13 is connected to a power supply (not shown), and when the operator turns on the power (starts rotating), the rotating mechanism 13 is driven and the main body 3 is rotated by electric power. there is In this way, the target tissue or the like can be effectively excised. .

この吸引管１の好ましい利用例は，吸引管１と，本体部３と接続され，吸引された対象物が収容される溶液槽とを含む，組織回収装置である。溶液槽は，接続部７と接続されたホースなどと連結されていればよい。例えば，液体と固体とは重さが異なるので，固体と液体とが遠心分離されるようにされており，液体は吸引装置５へ吸引され，固体は溶液槽に主に回収される。溶液槽には，例えば組織保存液が収容されているので，回収された組織などを分析することができる。 A preferred example of use of the suction tube 1 is a tissue recovery device that includes the suction tube 1 and a solution tank that is connected to the main body 3 and stores the suctioned object. The solution bath may be connected to a hose or the like connected to the connecting portion 7 . For example, since the liquid and the solid have different weights, the solid and the liquid are separated by centrifugation, the liquid is sucked into the suction device 5, and the solid is mainly collected in the solution bath. Since the solution bath contains, for example, a tissue preservation solution, the recovered tissue can be analyzed.

本発明は，医療機器の分野にて利用されうる。 INDUSTRIAL APPLICABILITY The present invention can be used in the field of medical equipment.

１ 医療用吸引管
３ 本体部
５ 吸引装置
７ 接続部
９ 刃
１１ 本体部の中心軸
１３ 回転機構 Reference Signs List 1 medical suction tube 3 main body 5 suction device 7 connecting portion 9 blade 11 central shaft of main body 13 rotation mechanism

Claims (3)

中空円柱状の本体部（３）と，前記本体部（３）と吸引装置（５）とを接続する接続部（７）とを有する医療用吸引管（１）であって，
前記本体部（３）の先端領域内部には，組織を切除するための刃（９）が設けられ，
前記本体部（３）の直径は，０．５ｍｍ以上１ｃｍ以下であり，
前記刃（９）は，前記本体部内部に前記本体部の中心軸（１１）に対して傾斜して存在し，縁部が前記本体部内部と接し，対象部分を切る部分である切刃部分が，前記医療用吸引管の内部において，前記医療用吸引管の中心軸方向に向かっている，中空状の刃であり，
前記本体部の先端が，前記本体部の中心軸に対して傾斜するように斜めにカットされた形状を有し，
前記刃（９）は，斜めにカットされた形状の前記本体部の先端に沿って存在する，医療用吸引管。 A medical suction tube (1) having a hollow columnar main body (3) and a connecting part (7) connecting the main body (3) and a suction device (5),
A blade (9) for excising tissue is provided inside the tip region of the main body (3),
The main body (3) has a diameter of 0.5 mm or more and 1 cm or less,
The blade (9) is present inside the main body at an angle with respect to the central axis (11) of the main body, and the edge is in contact with the inside of the main body, and is a cutting edge that cuts a target portion. The portion is a hollow blade inside the medical suction tube and facing in the direction of the central axis of the medical suction tube ,
The tip of the main body has a shape that is obliquely cut so as to be inclined with respect to the central axis of the main body,
A suction tube for medical use, wherein said blade (9) is present along the tip of said main body having an obliquely cut shape. 請求項１に記載の医療用吸引管（１）であって，
前記本体部を回転させるための回転機構（１３）をさらに含む，医療用吸引管。 A medical suction tube (1) according to claim 1,
A medical suction tube, further comprising a rotation mechanism (13) for rotating said body. 請求項１又は２に記載の医療用吸引管（１）と，前記本体部（３）と接続され，吸引された対象物が収容される溶液槽とを含む，組織回収装置。 3. A tissue recovery device comprising the medical suction tube (1) according to claim 1 or 2, and a solution tank connected to the main body (3) and containing the suctioned object.
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