JP5380122B2 - Medical device - Google Patents

Medical device Download PDF

Info

Publication number
JP5380122B2
JP5380122B2 JP2009072781A JP2009072781A JP5380122B2 JP 5380122 B2 JP5380122 B2 JP 5380122B2 JP 2009072781 A JP2009072781 A JP 2009072781A JP 2009072781 A JP2009072781 A JP 2009072781A JP 5380122 B2 JP5380122 B2 JP 5380122B2
Authority
JP
Japan
Prior art keywords
medical device
atrial septum
body rod
receiving surface
alignment means
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.)
Active
Application number
JP2009072781A
Other languages
Japanese (ja)
Other versions
JP2010220885A (en
Inventor
靖一 大坪
康 飯田
崇彦 川原
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.)
TRUMO KABUSHIKI KAISHA
Original Assignee
TRUMO KABUSHIKI KAISHA
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 TRUMO KABUSHIKI KAISHA filed Critical TRUMO KABUSHIKI KAISHA
Priority to JP2009072781A priority Critical patent/JP5380122B2/en
Publication of JP2010220885A publication Critical patent/JP2010220885A/en
Application granted granted Critical
Publication of JP5380122B2 publication Critical patent/JP5380122B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Laser Surgery Devices (AREA)
  • Surgical Instruments (AREA)

Description

本発明は、生体に生じた欠損を閉鎖する医療用デバイスの改良に関する。   The present invention relates to an improvement of a medical device for closing a defect generated in a living body.

最近、脳卒中や偏頭痛の心原性要因として卵円孔開存症(以下、PFO:Patent Foramen Ovale)が問題となっている。このPFOの治療デバイスは、器具を右心房から卵円孔を挿通し左心房に配置した後、卵円孔を閉鎖するように卵円孔弁を心房中隔に引き寄せて、卵円孔弁と心房中隔とを重積状に整列させ、電気エネルギを印加することにより卵円孔弁と心房中隔とを接合し、PFOを閉鎖するもので、例えば、下記特許文献1〜特許文献4に記載のものが提案されている。   Recently, patent foramen Ovale (PFO) has become a problem as a cardiogenic factor of stroke and migraine. In this PFO treatment device, the instrument is placed in the left atrium through the foramen from the right atrium, and then the foramen valve is drawn to the atrial septum so as to close the foramen. The atrial septum is aligned in a stacked manner, and the foramen valve and the atrial septum are joined by applying electrical energy to close the PFO. For example, in Patent Documents 1 to 4 listed below The described ones are proposed.

特許文献1のデバイスは、一対のワイヤーにより卵円孔弁を平坦化すると共に、位置決めして心房中隔と重積状に整列させ、カテーテルから突出した針状部材を卵円孔弁と心房中隔を貫通して穿刺するものである。   In the device of Patent Document 1, the foramen valve is flattened by a pair of wires, positioned and aligned with the atrial septum, and the needle-like member protruding from the catheter is placed in the foramen valve and the atrium. A puncture is made through the septum.

特許文献2のデバイスは、サクションにより卵円孔弁を心房中隔に引き寄せて重積状に整列させた状態で、カテーテルから突出した針状の挿通部材を卵円孔弁と心房中隔を貫通して穿刺するものである。   In the device of Patent Literature 2, the needle-like insertion member protruding from the catheter penetrates the foramen valve and the atrial septum in a state in which the foramen valve is drawn to the atrial septum by suction and aligned in a stack. And puncture.

特許文献3のデバイスは、一対のワイヤーにより卵円孔弁を平坦化すると共に、位置決めして心房中隔と重積状に整列させ、カテーテルから突出した針状部材を卵円孔弁と心房中隔を貫通して穿刺した後、この貫通孔に留め部材を配置し、卵円孔弁と心房中隔とを連結固定し、前記留め部材を留置するものである。   In the device of Patent Document 3, the foramen valve is flattened by a pair of wires, positioned and aligned with the atrial septum, and the needle-like member protruding from the catheter is placed in the foramen valve and the atrium. After puncturing through the septum, a retaining member is placed in the through hole, the foramen valvular valve and the atrial septum are connected and fixed, and the retaining member is placed.

特許文献4のデバイスは、本件出願人のものであるが、卵円孔弁と心房中隔を一対の電極により挟持するとき、一方を針電極、他方を平板状電極としたもので、針電極を卵円孔弁に穿刺した後、他方の電極との間で卵円孔弁と心房中隔を挟持し、両電極から電気エネルギを印加することにより生体組織を確実に接合させるものである。このデバイスは、先天性の心房中隔欠損症(ASD)、PFO、心室中隔欠損症(VSD)、動脈管開存症(PDA)といった欠損を閉鎖する場合にも使用でき、汎用性の高いものであり、特に、体内に異物を留置せず、構成が簡単で、手技も容易となり、確実に卵円孔弁と心房中隔を接合できる。   The device of Patent Document 4 belongs to the applicant of the present application. When the oval valve and the atrial septum are sandwiched by a pair of electrodes, one is a needle electrode and the other is a flat electrode. Is inserted into the foramen ovale valve, the oval valve and the atrial septum are sandwiched between the other electrode, and electrical energy is applied from both electrodes to reliably join the living tissue. This device can also be used to close defects such as congenital atrial septal defect (ASD), PFO, ventricular septal defect (VSD), patent ductus arteriosus (PDA), and is highly versatile In particular, no foreign substance is placed in the body, the structure is simple, the procedure is easy, and the foramen valve and the atrial septum can be reliably joined.

WO2007/024514A1WO2007 / 024514A1 WO2007/024519A1WO2007 / 024519A1 WO2007/024615A1WO2007 / 024615A1 WO2007/100067A1WO2007 / 100067A1

このようなデバイスを用いてPFOの治療を行う場合、卵円孔弁と心房中隔からなる生体組織を適切に融着乃至接合させる重要な要素は、加熱温度、加熱時間及び生体組織の把持力であり、これらが適切に設定されてはじめてPFOを治癒させることができる。これら要素の内、加熱温度及び加熱時間は、比較的精度よく制御できるものの、生体組織の把持力(つまり、卵円孔弁を心房中隔に引き寄せて両者が接触している状態を維持する力)に関しては、適切か否かの判断が極めて困難である。   When PFO treatment is performed using such a device, the important factors for appropriately fusing or joining the biological tissue composed of the foramen ovale and the atrial septum are the heating temperature, the heating time, and the grasping force of the biological tissue. The PFO can be cured only after these are set appropriately. Among these elements, although the heating temperature and heating time can be controlled with relatively high accuracy, the grasping force of the living tissue (that is, the force that pulls the foramen valve into the atrial septum and keeps them in contact with each other) ), It is extremely difficult to determine whether it is appropriate.

特に、卵円孔弁と心房中隔を重積状に整列させる手段は、極めて細いカテーテルの先端に設けられ、把持する範囲も限られており、卵円孔弁と心房中隔は人により極めて形状や大きさも異なっているので、両者の把持状態や把持力を適切に行うことは容易ではない。   In particular, the means for aligning the foramen valve and the atrial septum in a stacked manner is provided at the tip of an extremely thin catheter, and the gripping range is limited. Since the shapes and sizes are also different, it is not easy to appropriately perform the gripping state and gripping force of both.

例えば、従来のデバイスのように、カテーテルの先端に設けられている一対のワイヤーやサクション部材を用いて卵円孔弁と心房中隔を重積状に整列させ、この状態を保持して、針状の挿通部材を卵円孔弁に穿刺する場合には、予め心房中隔にカテーテルの先端を当てて、挿通部材の位置を確認した後に行うことになるが、心房中隔にカテーテルの先端が当っているか否かは、カテーテルを心房中隔に押し当てないと分からない。ところが、この押し当て力が大きいと心房中隔などに損傷を与えるおそれがある。   For example, like a conventional device, a pair of wires and suction members provided at the tip of a catheter are used to align the foramen ovale valve and the atrial septum in a stacked manner, and this state is maintained and the needle is When puncturing the foramen ovale valve, the tip of the catheter is applied to the atrial septum in advance and the position of the insertion member is confirmed, but the tip of the catheter is inserted into the atrial septum. Whether it is hit or not is not known unless the catheter is pressed against the atrial septum. However, if this pressing force is large, the atrial septum may be damaged.

また、卵円孔弁と心房中隔を重積状に整列させたとしても、卵円孔弁や心房中隔は、表面が平滑なものではなく、その厚さも均一な状態ではないため、重積状態を保持する把持力が適切か否かの確認も容易ではない。特に、PFOでは、心房中隔の下端部分が卵円孔弁との間で隙間なく確実に閉塞されていることが好ましいが、卵円孔弁の長さが一定でないため、適切に把持されているか否かの判断は容易ではない。   Even if the oval valve and the atrial septum are aligned in a stacked manner, the oval valve and the atrial septum are not smooth and the thickness is not uniform. It is not easy to confirm whether or not the gripping force for holding the stacked state is appropriate. In particular, in PFO, it is preferable that the lower end portion of the atrial septum is securely closed without any gap between the foramen valve, but the length of the foramen valve is not constant, It is not easy to determine whether or not.

さらに、熱エネルギを付与して卵円孔弁と心房中隔とを接合する場合においても、熱エネルギの付与により生体組織は熱収縮し、これにより生体組織の把持状態も変化することになり、把持力も低下し、場合によっては、生体組織とデバイスとの間に血流が流入し、血流の過熱により血栓が生じるおそれもある。万一血栓が生じると、これが脳へと流れ、脳梗塞を引き起こすおそれもある。   Furthermore, even when applying the heat energy to join the foramen ovale valve and the atrial septum, the living tissue is thermally contracted by the application of the heat energy, thereby changing the gripping state of the living tissue, The gripping force also decreases, and in some cases, blood flow flows between the living tissue and the device, and there is a possibility that thrombus may be generated due to overheating of the blood flow. If a thrombus occurs, it can flow into the brain and cause cerebral infarction.

本発明は、上述した課題を解決するためになされたもので、生体組織がいかなる形態であっても生体組織を損傷あるいは押し潰すことなく生体組織を適切に把持し、生体組織の接合をより確実に行うことができ、手技の容易化かつ確実化が図られ、しかも、手技中において生体組織の保護が確実な、使い勝手のよい、医療用デバイスを提供することを目的とする。   The present invention has been made in order to solve the above-described problem. Even if the biological tissue is in any form, the biological tissue is appropriately grasped without damaging or crushing the biological tissue, and the biological tissue can be more reliably joined. It is an object of the present invention to provide an easy-to-use medical device that can be performed easily, that facilitates and ensures the procedure, and that ensures the protection of living tissue during the procedure.

上記目的を達成する第1の発明に係る医療用デバイスは、生体組織を重積状に整列させた状態で接合手段により接合する医療用デバイスであって、カテーテル内に設けられた本体ロッドの先端部に、前記生体組織との接触圧を検知する圧力センサーを設けたことを特徴とする。   A medical device according to a first invention that achieves the above-described object is a medical device that joins biological tissues by joining means in a state where they are aligned in a stacked manner, and the tip of a body rod provided in a catheter A pressure sensor for detecting a contact pressure with the living tissue is provided in the part.

上記目的を達成する第2の発明に係る医療用デバイスは、本体ロッドの先端に設けられた整列手段により生体組織を重積状に整列させた状態で接合手段により接合する医療用デバイスであって、前記本体ロッドの先端部に前記生体組織との接触圧を緩衝する緩衝材を設けたことを特徴とする。   A medical device according to a second invention that achieves the above object is a medical device that is joined by a joining means in a state where biological tissues are aligned in a stacked manner by an aligning means provided at a tip of a main body rod. The body rod is provided with a cushioning material that cushions the contact pressure with the living tissue at the tip of the body rod.

第1の発明は、本体ロッドの先端部に生体組織との接触圧を検知する圧力センサーを設けたので、生体組織の端部などが接触したことを検知でき、生体組織の所定位置まで前記本体ロッドの先端部が到達したことが分かり、また、生体組織が重積状に整列した場合もその接触圧により整列状態の良否が判別でき、さらに接合時には接合手段が所定の把持力となるまで整列あるいは接合時の把持をやり直すことができ、手技の容易化かつ確実化が図られた、使い勝手のよい、医療用デバイスとなる。   In the first aspect of the invention, since the pressure sensor for detecting the contact pressure with the living tissue is provided at the distal end portion of the body rod, it is possible to detect that the end portion of the living tissue is in contact with the body tissue until a predetermined position of the living tissue. It can be seen that the tip of the rod has arrived, and even when living tissues are aligned in layers, the contact pressure can be used to determine whether the alignment state is good, and at the time of joining, the joining means is aligned until a predetermined gripping force is obtained. Alternatively, it is possible to redo the gripping at the time of joining, and it becomes an easy-to-use medical device that facilitates and ensures the procedure.

前記整列手段を収納し保持する支持具をカテーテルの先端部に設け、これに前記圧力センサーを設けると、圧力センサーの設置も容易で、最適な位置や状態に設置でき、操作性も向上し、しかも前記整列手段のユニット化が可能で、医療用デバイスの製造作業の面で有利となる。   When a support for storing and holding the alignment means is provided at the distal end of the catheter and the pressure sensor is provided on the catheter, it is easy to install the pressure sensor, it can be installed in an optimal position and state, and operability is improved. Moreover, the alignment means can be unitized, which is advantageous in terms of manufacturing work of the medical device.

前記整列手段を、生体組織を拡開し平坦化する拡張ワイヤーと、前記本体ロッド若しくは支持具に形成された受面部とから構成すれば、両生体組織を整列し易くなる。   If the aligning means is composed of an expansion wire for expanding and flattening the living tissue and a receiving surface portion formed on the main body rod or the support, both living tissues can be easily aligned.

前記整列手段を、前記本体ロッド若しくは支持具に形成された受面部と、負圧により前記生体組織の少なくとも一方を吸引し変位させるサクション部材とから構成すれば、薄い生体組織であっても両生体組織の整列が容易になる。   If the alignment means is composed of a receiving surface portion formed on the main body rod or the support and a suction member that sucks and displaces at least one of the living tissues by negative pressure, both living organisms can be obtained. Tissue alignment becomes easier.

前記整列手段を、前記本体ロッド若しくは支持具に形成された受面部と、生体組織の一方を引き寄せる位置決めワイヤーと、から構成すれば、比較的簡単な構成で、生体組織の整列や保持ができる。   If the alignment means comprises a receiving surface portion formed on the main body rod or the support and a positioning wire that draws one of the biological tissues, the biological tissues can be aligned and held with a relatively simple configuration.

前記整列手段を、前記本体ロッド若しくは支持具に形成された受面部と、当該受面部の平坦部との間で前記生体組織の端部などを挟持するように開き角度が付与された挟持ワイヤー、から構成すれば、どのような形態の生体組織であっても前記受面部と挟持ワイヤーとの間で保持でき、両生体組織の整列が容易になる。   A holding wire provided with an opening angle so as to hold the end of the living tissue between the receiving surface portion formed on the main body rod or the support and the flat portion of the receiving surface portion, the alignment means; If it comprises, it will be hold | maintained between the said receiving surface part and a clamping wire even if it is a biological tissue of any form, and alignment of both biological tissues becomes easy.

前記整列手段を、前記生体組織のいずれか一方に穿刺される穿刺部と、当該穿刺部と共働し前記両生体組織を挟持する挟持部材と、から構成すれば、前記穿刺部の穿刺により位置固定した状態で挟持部材との間で生体組織を挟持でき、どのような形態の生体組織であっても保持でき、両生体組織の整列が容易になるのみでなく、当該整列手段を接合手段としても使用でき、整列から接合という一連の操作がきわめて容易になる。   If the alignment means comprises a puncture part that is punctured into one of the biological tissues and a clamping member that cooperates with the puncture part and sandwiches both the biological tissues, the alignment means can be positioned by puncturing the puncture part. Biological tissue can be clamped between the clamping members in a fixed state, and any type of biological tissue can be held, not only facilitates alignment of both biological tissues, but also the alignment means as a joining means Can be used, and a series of operations from alignment to joining becomes extremely easy.

前記圧力センサーに、前記両生体組織と接する部位に緩衝材を設ければ、位置決め時などに前記生体組織を損傷せず、手技が容易でかつ安全なものとなる。   If the pressure sensor is provided with a cushioning material at a portion in contact with both living tissues, the living tissue is not damaged at the time of positioning or the like, and the procedure is easy and safe.

前記圧力センサーが、前記生体組織に対する押圧力が所定の閾値を越えると警告手段を作動させると、位置決め時などに前記生体組織を損傷せず、手技が容易でかつ安全なものとなる。   When the pressure sensor activates a warning means when the pressing force on the living tissue exceeds a predetermined threshold, the living tissue is not damaged at the time of positioning or the like, and the procedure is easy and safe.

前記接合手段を、前記両生体組織を穿刺し挿通する挿通部材と、手元操作部の操作により放射状に拡開される網状部材と、から構成すれば、前記両生体組織を穿刺した状態で網状部材を開き、前記受面部との間で前記両生体組織を挟持でき、手技が容易になる。   If the joining means is composed of an insertion member that punctures and penetrates both biological tissues and a net-like member that is radially expanded by the operation of the hand operation unit, the mesh-like member is punctured with both biological tissues. The two living tissues can be sandwiched between the receiving surface portion and the procedure becomes easy.

前記接合手段が、挟持した前記両生体組織を接合させる前記両生体組織を接合させる熱エネルギを前記整列手段に付与する熱エネルギ付与手段であれば、両生体組織の接合を外部操作で容易に行うことができ、手技の容易なデバイスになる。   If the joining means is a thermal energy application means for applying thermal energy for joining the two biological tissues to join the two biological tissues to the alignment means, the two biological tissues can be easily joined by an external operation. Can be a device that can be easily manipulated.

前記熱エネルギ付与手段が、前記両電極部材間の生体組織のインピーダンスにより電流を制御する高周波バイポーラ方式とすれば、人により相違する生体組織の状態に応じて容易に対応でき、安全性と手技の利便性が得られる。   If the thermal energy application means is a high-frequency bipolar system that controls the current according to the impedance of the living tissue between the electrode members, it can be easily handled according to the state of the living tissue that differs depending on the person, and safety and procedure can be improved. Convenience can be obtained.

前記接合手段を、挿通部材により形成された貫通孔に挿通され、両生体組織を貫通して挟持するクリップ手段とすれば、前記両生体組織の接合性が確実になる。   If the joining means is a clip means that is inserted through a through-hole formed by the insertion member and penetrates and sandwiches both living tissues, the joining properties of both living tissues are ensured.

第2の発明は、本体ロッドの先端部に生体組織との接触圧を緩衝する緩衝材を設けたので、手技中に、生体組織の端部などと本体ロッドが接触しても、不必要に生体組織を加圧したり傷つけることを防止でき、生体組織の保護が確実な、安全性の高い、使い勝手のよい、医療用デバイスとなる。   In the second aspect of the invention, since the buffer material for buffering the contact pressure with the living tissue is provided at the distal end portion of the main body rod, even if the end portion of the living tissue contacts the main body rod during the procedure, it is unnecessary. It is possible to prevent the biological tissue from being pressurized or damaged, and to provide a medical device with high safety, easy use, and reliable protection of the biological tissue.

第1の発明の第1実施形態に係るPFO閉鎖デバイスを示す全体概略図である。It is a whole schematic diagram showing a PFO closure device concerning a 1st embodiment of the 1st invention. 同第1実施形態の要部斜視図である。It is a principal part perspective view of the 1st embodiment. 同第1実施形態の挿通部材を示す斜視図である。It is a perspective view which shows the penetration member of the said 1st Embodiment. 同第1実施形態の整列手段の作動状態を示す斜視図である。It is a perspective view which shows the operation state of the alignment means of the said 1st Embodiment. (A)は同実施形態の接合手段の一例を示す正面図、(B)は同接合手段の作動状態を示す正面図、(C)は(B)のC−C線に沿う矢視図である。(A) is a front view showing an example of the joining means of the embodiment, (B) is a front view showing the operating state of the joining means, (C) is an arrow view along the CC line of (B). is there. 第1実施形態による生体組織の挟持状態を示す要部断面図である。It is principal part sectional drawing which shows the clamping state of the biological tissue by 1st Embodiment. 圧力センサーの変形例を示す要部断面図である。It is principal part sectional drawing which shows the modification of a pressure sensor. 本発明の第2実施形態に係るデバイスの要部斜視図である。It is a principal part perspective view of the device which concerns on 2nd Embodiment of this invention. 第2実施形態による生体組織の挟持状態を示す要部断面図である。It is principal part sectional drawing which shows the clamping state of the biological tissue by 2nd Embodiment. 本発明の第3実施形態に係るデバイスの要部斜視図である。It is a principal part perspective view of the device which concerns on 3rd Embodiment of this invention. 本発明の第4実施形態に係るデバイスの要部断面図である。It is principal part sectional drawing of the device which concerns on 4th Embodiment of this invention. 同実施形態による生体組織の挟持状態を示す要部断面図である。It is principal part sectional drawing which shows the clamping state of the biological tissue by the embodiment. 同実施形態の変形例を示す要部断面図である。It is principal part sectional drawing which shows the modification of the embodiment. (A)及び(B)はクリップ手段の一例を示す正面図である。(A) And (B) is a front view which shows an example of a clip means. 同クリップ手段によるクリップ状態を示す要部断面図である。It is principal part sectional drawing which shows the clip state by the clip means. 第2の発明に係るPFO閉鎖デバイスを示す要部概略図である。It is a principal part schematic diagram which shows the PFO closure device which concerns on 2nd invention.

以下、図面を参照して、本発明の実施の形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<第1実施形態>
第1の発明における第1実施形態の医療用デバイスは、PFO閉鎖デバイスである。図1に示すように、PFO閉鎖デバイスは、基端側に設けられた手元操作部10と、手元操作部10に基端が取り付けられたカテーテル11と、カテーテル11のルーメンL1内に設けられた長尺な本体ロッド12と、本体ロッド12の先端部分に設けられ、卵円孔弁M2及び心房中隔M1を重積状に整列させる整列手段20と、整列手段20により整列された卵円孔弁M2及び心房中隔M1を熱エネルギにより融着あるいは壊死し接合させる接合手段30と、を有している。なお、以下の説明において、デバイスの手元操作部側を「基端側」、整列手段20側を「先端側」と称す。また、図1中、「L」は左心房、「R」は右心房を示す。
<First Embodiment>
The medical device according to the first embodiment of the first invention is a PFO closure device. As shown in FIG. 1, the PFO closing device is provided in a proximal operation unit 10 provided on the proximal end side, a catheter 11 having a proximal end attached to the proximal operation unit 10, and a lumen L <b> 1 of the catheter 11. A long body rod 12, an alignment means 20 provided at the distal end portion of the body rod 12, and aligning the oval valve M2 and the atrial septum M1 in a stacked manner, and the oval holes aligned by the alignment means 20 And a joining means 30 for joining the valve M2 and the atrial septum M1 by heat energy. In the following description, the hand operating unit side of the device is referred to as “base end side”, and the alignment means 20 side is referred to as “tip side”. In FIG. 1, “L” indicates the left atrium and “R” indicates the right atrium.

さらに詳述する。整列手段20は、図2に示すように、本体ロッド12の先端部分に設けられた支持具21に収納保持されている。支持具21は、端部が丸み付けされた円柱体の先端部を削落することにより形成され、平坦な受面部22と直立壁23とを有し、背面側には軸線方向に伸延する溝部24が形成されている。   Further details will be described. As shown in FIG. 2, the aligning means 20 is housed and held in a support tool 21 provided at the distal end portion of the main body rod 12. The support 21 is formed by scraping the tip of a cylindrical body whose end is rounded, has a flat receiving surface 22 and an upright wall 23, and a groove extending in the axial direction on the back side. 24 is formed.

直立壁23には、比較的扁平なルーメンL2が開設され、ルーメンL2には、卵円孔Oを拡開するばね鋼などの弾性線材からなるY字状をした拡張ワイヤー26が常時は突出しないように収納されている。拡張ワイヤー26の基端側には、操作コード27が連結され、手元操作部10を操作することにより、図4に示すように、拡張ワイヤー26をルーメンL2から卵円孔Oに向って突出し、その弾性により卵円孔Oを引き伸ばし、デバイスを卵円孔Oに対して位置決めし、卵円孔弁M2と心房中隔M1を相互に重積状になるように整列させるようになっている。 A relatively flat lumen L2 is opened on the upright wall 23, and a Y-shaped extension wire 26 made of an elastic wire material such as spring steel for expanding the oval hole O does not always protrude in the lumen L2. So that it is stored. An operation cord 27 is connected to the proximal end side of the extension wire 26, and by operating the hand operation unit 10, the extension wire 26 protrudes from the lumen L2 toward the oval hole O as shown in FIG. Due to its elasticity, the foramen ovale O is stretched, the device is positioned with respect to the foramen ovale O , and the foramen valve M2 and the atrial septum M1 are aligned so as to overlap each other.

一方、受面部22は、整列された卵円孔弁M2と心房中隔M1が当接する部分として構成されており、ここには、受面部22の面に対し直交する貫通孔28が前述の溝部24と連通するように設けられている。   On the other hand, the receiving surface portion 22 is configured as a portion where the aligned oval valve M2 and the atrial septum M1 come into contact with each other, and the through hole 28 perpendicular to the surface of the receiving surface portion 22 includes the groove portion described above. 24 is provided so as to communicate with 24.

特に、本実施形態では、受面部22に、心房中隔M1の端面と当接する部位に圧力センサーSも設けられている。圧力センサーSは、カテーテル12の先端を心房中隔M1の端面に押し当てたとき、外部のモニターなどでその押圧力から後述の挿通部材31の位置の良否や、強い押圧力による心房中隔M1の損傷防止や、心房中隔M1を受面部22に引き寄せたときの卵円孔弁M2と心房中隔M1との密着状態の良否などを検知するものである。ただし、この押し当て力が大きいと心房中隔M1などに損傷を与えるおそれがあるので、心房中隔M1に対する押圧力が所定の閾値を越えると、例えば、モニターで表示したり、警報を発したりする警告手段(不図示)を作動させ、位置決め時における生体組織の損傷を防止している。   In particular, in the present embodiment, the pressure sensor S is also provided on the receiving surface portion 22 at a site that contacts the end surface of the atrial septum M1. When the distal end of the catheter 12 is pressed against the end surface of the atrial septum M1, the pressure sensor S uses an external monitor or the like to determine whether the insertion member 31 described later is good or bad from the pressing force, and the atrial septum M1 due to a strong pressing force. In addition, it is possible to detect whether or not the atrial septum M1 and the atrial septum M1 are in close contact with each other. However, if this pressing force is large, the atrial septum M1 and the like may be damaged. If the pressing force on the atrial septum M1 exceeds a predetermined threshold, for example, it is displayed on a monitor or an alarm is issued. A warning means (not shown) is activated to prevent damage to the living tissue during positioning.

圧力センサーSは、受面部22における心房中隔M1の端面が当接する部位、つまり、受面部22の表面のみでなく、図7に示すように、心房中隔M1の縁部が当接する部位、つまり、受面部22の直立壁23に設けてもよい。このようにすれば、挿通部材31の位置の良否や、心房中隔M1の損傷防止に有効なものとなる。   The pressure sensor S is a portion where the end surface of the atrial septum M1 contacts the receiving surface portion 22, that is, a portion where not only the surface of the receiving surface portion 22 but also the edge of the atrial septum M1 contacts, That is, you may provide in the upright wall 23 of the receiving surface part 22. FIG. If it does in this way, it will become effective for the quality of the position of the penetration member 31, and the damage prevention of the atrial septum M1.

また、圧力センサーSは、図7に示すように、圧力センサーSの表面の生体組織と接する部位に緩衝材Cを設けてもよい。緩衝材Cにより心房中隔M1の損傷をさらに確実に防止できる。 本実施形態の接合手段30は、図1,2に示すように、溝部24内に設けられた操作管33内に挿通された挿通部材31と、挿通部材31の先端部に設けられ、手元操作部10での操作により放射状に拡開され、受面部22との間で卵円孔弁M2と心房中隔M1を挟持する網状部材32(図5参照)と、受面部22と網状部材32との間に熱エネルギを付与する熱エネルギ付与手段50と、を有している。   Moreover, the pressure sensor S may provide the buffer material C in the site | part which contact | connects the biological tissue of the surface of the pressure sensor S, as shown in FIG. The buffer material C can more reliably prevent damage to the atrial septum M1. As shown in FIGS. 1 and 2, the joining means 30 of the present embodiment is provided at an insertion member 31 inserted in an operation tube 33 provided in the groove portion 24, and at a distal end portion of the insertion member 31. A net-like member 32 (see FIG. 5) that is radially expanded by the operation of the part 10 and sandwiches the foramen ovale valve M2 and the atrial septum M1 with the receiving surface part 22, and the receiving surface part 22 and the net-like member 32 And thermal energy application means 50 for applying thermal energy between the two.

挿通部材31は、図3に示すように、常時は中空の操作管33内に位置されている先端が尖った形状の穿刺部31aと、穿刺部31aに連設された中空の穿刺ロッド31bとから構成されている。操作管33は、先端が溝部24の頂部内面に形成される連結点35で回動可能に連結され、連結点35の近傍には変形可能な柔軟部36が設けられている。   As shown in FIG. 3, the insertion member 31 includes a puncture portion 31a having a pointed tip which is normally positioned in a hollow operation tube 33, and a hollow puncture rod 31b provided continuously to the puncture portion 31a. It is composed of The operation tube 33 is rotatably connected at a connecting point 35 formed at the tip inner surface of the groove portion 24, and a deformable flexible portion 36 is provided in the vicinity of the connecting point 35.

挿通部材31は、常時は、図2に示すように、支持具21内に直状をした状態で収納されているが、手元操作部10において、操作管33を、図3の矢印方向に押圧すると、図4に示すように、操作管33が連結点35を中心に回動すると共に、柔軟部36が変形し、その先端は貫通孔28と同一軸線となる。したがって、この状態で穿刺ロッド31bを手元操作部10で押し出し操作すれば、貫通孔28から突出する。   As shown in FIG. 2, the insertion member 31 is normally stored in a straight state in the support tool 21, but the operating tube 33 is pressed in the direction of the arrow in FIG. Then, as shown in FIG. 4, the operation tube 33 rotates around the connection point 35, and the flexible portion 36 is deformed, and the tip thereof is on the same axis as the through hole 28. Accordingly, if the puncture rod 31b is pushed out by the hand operation unit 10 in this state, it protrudes from the through hole 28.

網状部材32は、図5(A)に示すように、中空の穿刺ロッド31bの先端部近傍に一体に設けられ、拡開時の状態を示す図5(C)より明らかなように、細い形状記憶金属の線材により構成されている。つまり、手元操作部10で穿刺ロッド31bを押し出し操作し、網状部材32を支持具21の貫通孔28から穿刺部31aと共に突出させれば、網状部材32は、図5(B)(C)に示すように、自ら放射方向外方に拡開する。そして、この拡開状態から少し後退移動させれば、穿刺部31aが穿刺した心房中隔M1と卵円孔弁M2を受面部22との間で挟持することになる。   As shown in FIG. 5 (A), the mesh member 32 is integrally provided in the vicinity of the tip of the hollow puncture rod 31b, and as shown in FIG. 5 (C) showing the expanded state, has a narrow shape. It is made of a memory metal wire. That is, if the puncture rod 31b is pushed out by the hand operation unit 10 and the mesh member 32 is projected from the through hole 28 of the support tool 21 together with the puncture portion 31a, the mesh member 32 is shown in FIGS. As shown, it expands itself outward in the radial direction. And if it is moved slightly backward from this expanded state, the atrial septum M1 punctured by the puncture part 31a and the foramen ovale valve M2 will be clamped between the receiving surface part 22.

熱エネルギ付与手段50は、生体組織に電流を流すことにより生じるジュール熱により卵円孔弁M2と心房中隔M1を融着あるいは壊死し、相互に接合するものである。したがって、網状部材32と受面部22を電極として機能するものにより構成し、卵円孔弁M2と心房中隔M1を網状部材32と受面部22との間で挟持した状態で、網状部材32と受面部22との間に熱エネルギ付与手段50により電流を流すと、卵円孔弁M2及び心房中隔M1に熱エネルギを供給することができ、これにより両者を接合することができる。   The thermal energy application means 50 fuses or necroses the oval valve M2 and the atrial septum M1 by Joule heat generated by passing an electric current through the living tissue, and joins them together. Therefore, the mesh member 32 and the receiving surface portion 22 are constituted by those functioning as electrodes, and the mesh member 32 and the oval valve M2 and the atrial septum M1 are sandwiched between the mesh member 32 and the receiving surface portion 22. When a current is passed between the receiving surface portion 22 and the heat energy applying means 50, the heat energy can be supplied to the foramen ovale valve M2 and the atrial septum M1, thereby joining them together.

熱エネルギ付与手段50としては、電極部材間の生体組織のインピーダンスにより電流を制御する高周波バイポーラ方式とすれば、人により相違する生体組織の状態に応じて容易に対応でき、安全性と手技の利便性が得られ、好ましい。   As the thermal energy application means 50, if a high-frequency bipolar system that controls the current by the impedance of the biological tissue between the electrode members is used, it can be easily handled according to the state of the biological tissue that differs depending on the person, and safety and convenience of the procedure Property is preferable.

次に、本実施形態の作用を説明する。   Next, the operation of this embodiment will be described.

まず、ガイドワイヤールーメンL3からガイドワイヤーを先行挿入し、PFOを通って左心房に向って伸延した後、本体ロッド12を押すと、ガイドワイヤーに沿うように本体ロッド12の先端部がカテーテル11から突出し、支持具21がPFOの右心房R側に位置される。   First, a guide wire is inserted in advance from the guide wire lumen L3, and after extending through the PFO toward the left atrium, when the main body rod 12 is pushed, the distal end portion of the main body rod 12 extends from the catheter 11 along the guide wire. It protrudes and the support 21 is positioned on the right atrial R side of the PFO.

次に、操作コード27を操作して拡張ワイヤー26を支持具21から卵円孔Oに向って突出すると、卵円孔O内に入ったY字状の拡張ワイヤー26が開き、その弾性により卵円孔Oを引き伸ばし、また、この拡張ワイヤー26の卵円孔Oに対する開き固定により支持具21もPFOに対し位置決めされる。 Next, when the operation cord 27 is operated to project the extension wire 26 from the support 21 toward the foramen ovale O, the Y-shaped extension wire 26 that has entered the foramen ovale O opens, and the elasticity causes the egg. stretching the circular hole O, also support 21 by opening fixed relative to the foramen ovale O of the extension wire 26 is also positioned against PFO.

本実施形態では、支持具21の位置、つまりPFOに対する挿通部材31の位置の確認は、受面部22に設けられた圧力センサーSにより行う。カテーテル12の先端を心房中隔M1の端面に押し当てると、拡張ワイヤー26と受面部22との間の心房中隔M1が圧力センサーSに当接乃至押圧され、その押し当て力が外部のモニターなどで表示される。この押し当て力の値が所定の範囲内であれば、正常にカテーテル12の先端が心房中隔M1の端面に当接していることが分かる。この押し当て力の値が所定の閾値を越えると、心房中隔などに損傷を与えるおそれがあるので、心房中隔M1に対する押圧を停止する。   In the present embodiment, the position of the support member 21, that is, the position of the insertion member 31 with respect to the PFO is confirmed by the pressure sensor S provided on the receiving surface portion 22. When the distal end of the catheter 12 is pressed against the end surface of the atrial septum M1, the atrial septum M1 between the expansion wire 26 and the receiving surface 22 is brought into contact with or pressed against the pressure sensor S, and the pressing force is externally monitored. And so on. If the value of this pressing force is within a predetermined range, it can be seen that the distal end of the catheter 12 is normally in contact with the end surface of the atrial septum M1. If the value of the pressing force exceeds a predetermined threshold value, the atrial septum or the like may be damaged, so the pressing on the atrial septum M1 is stopped.

PFOに対する挿通部材31の位置が正常であれば、操作管33をカテーテル11内に押し込むように押圧する。この押圧により操作管33の先端は連結点35で回動し、柔軟部36が変形し、操作管33の先端が貫通孔28と同一軸線となる。手元操作部10で穿刺ロッド31bを操作し、貫通孔28から突出すると、図6に示すように、挿通部材31が卵円孔弁M2と心房中隔M1を貫通すると共に、網状部材32が自ら放射方向外方に拡開する。そして、穿刺ロッド31bを僅かに後退させるように牽引操作すると、網状部材32と受面部22との間で心房中隔M1と卵円孔弁M2を挟持し、心房中隔M1と卵円孔弁M2を密着させることができる。   If the position of the insertion member 31 with respect to the PFO is normal, the operation tube 33 is pressed so as to be pushed into the catheter 11. By this pressing, the distal end of the operation tube 33 is rotated at the connection point 35, the flexible portion 36 is deformed, and the distal end of the operation tube 33 becomes the same axis as the through hole 28. When the puncture rod 31b is operated by the hand operation unit 10 and protrudes from the through hole 28, the insertion member 31 penetrates the foramen ovale valve M2 and the atrial septum M1 as shown in FIG. Expands outward in the radial direction. When the puncture rod 31b is pulled so as to be slightly retracted, the atrial septum M1 and the foramen ovale valve M2 are sandwiched between the mesh member 32 and the receiving surface portion 22, and the atrial septum M1 and the foramen ovale valve are sandwiched. M2 can be adhered.

本実施形態では、この牽引操作時に、心房中隔M1が圧力センサーSを押すことになるので、この時点でも挟持状態の心房中隔M1と卵円孔弁M2との間に適正な圧力が掛けられているか否かを検知できる。特に、PFOでは、心房中隔M1の下端部分が卵円孔弁M2との間で隙間なく確実に閉塞されていることが好ましいが、本実施形態では、圧力センサーSが直立壁23の直近位置に配置されているので、心房中隔M1の下端部分での圧着状態を検知することができる。   In the present embodiment, the atrial septum M1 presses the pressure sensor S during this traction operation, so that an appropriate pressure is applied between the atrial septum M1 in the clamped state and the foramen ovale valve M2 even at this time. It is possible to detect whether or not In particular, in the PFO, it is preferable that the lower end portion of the atrial septum M1 is reliably closed without a gap with the foramen ovale valve M2, but in this embodiment, the pressure sensor S is positioned at the closest position of the upright wall 23. Therefore, the crimping state at the lower end portion of the atrial septum M1 can be detected.

この挟持状態が適正であれば、熱エネルギ付与手段50を作動し、網状部材32と受面部22との間により電流を流すと、卵円孔弁M2及び心房中隔M1に熱エネルギが供給され、卵円孔弁M2と心房中隔M1を相互に融着させることができる。   If this clamping state is appropriate, when the thermal energy application means 50 is operated and a current flows between the mesh member 32 and the receiving surface portion 22, thermal energy is supplied to the foramen ovale valve M2 and the atrial septum M1. The foramen valve M2 and the atrial septum M1 can be fused together.

<第2実施形態>
前述した実施形態では、整列手段20として拡張ワイヤー26を、卵円孔弁M2の引き寄せるときの接合手段30として網状部材32と穿刺ロッド31bをそれぞれ用いているが、本実施形態では、整列手段20として負圧により生体組織を吸引し変位させるサクション部材40を使用し、卵円孔弁M2を引き寄せる接合手段30として穿刺ロッド31bを使用している。
Second Embodiment
In the above-described embodiment, the expansion wire 26 is used as the aligning means 20, and the mesh member 32 and the puncture rod 31b are used as the joining means 30 when the foramen ovale valve M2 is pulled, but in this embodiment, the aligning means 20 is used. The suction member 40 for sucking and displacing the living tissue with a negative pressure is used, and the puncture rod 31b is used as the joining means 30 for attracting the foramen ovale valve M2.

図8は第2実施形態に係るデバイスの要部斜視図であり、図9は同実施形態による生体組織の挟持状態を示す要部断面図であるが、図1〜7に示す部材と共通する部材には同一符号を付し、説明は省略する。   FIG. 8 is a perspective view of a main part of a device according to the second embodiment, and FIG. 9 is a cross-sectional view of the main part showing a sandwiched state of a biological tissue according to the same embodiment, but is common to the members shown in FIGS. The same reference numerals are given to the members, and the description is omitted.

本実施形態のデバイスは、図8に示すように、本体ロッド12の先端部分に設けられた支持具21のルーメンL2に、整列手段20としてのサクション部材40が設けられている。サクション部材40も、基端側に連結された操作コード27の操作によりルーメンL2から出没自在に構成されているが、この基端部にはコンプレッサなどの吸引源(不図示)も連結され、負圧が導かれるようにしている。   In the device of the present embodiment, as shown in FIG. 8, a suction member 40 as the alignment means 20 is provided on the lumen L <b> 2 of the support 21 provided at the distal end portion of the main body rod 12. The suction member 40 is also configured to be able to protrude and retract from the lumen L2 by the operation of the operation cord 27 connected to the base end side. A suction source (not shown) such as a compressor is also connected to the base end portion, so The pressure is guided.

一方、接合手段30としての位置決めワイヤー41は、中空の穿刺ロッド31b内を挿通して設けられ、先端が、卵円孔弁M2を引き寄せ易いように穿刺部31a近傍から放射方向に突出するように構成されている。位置決めワイヤー41を放射方向に突出する構成としては、例えば、穿刺ロッド31b内に形成されている位置決めワイヤー41をガイドする通路形状を、いわばL字状に形成する。位置決めワイヤー41の基端側は、操作管33及び穿刺ロッド31bと共に、手元操作部10まで伸延されている。   On the other hand, the positioning wire 41 as the joining means 30 is provided so as to be inserted through the hollow puncture rod 31b so that the tip protrudes in the radial direction from the vicinity of the puncture portion 31a so as to easily attract the oval hole valve M2. It is configured. As a configuration for projecting the positioning wire 41 in the radial direction, for example, a passage shape for guiding the positioning wire 41 formed in the puncture rod 31b is formed in an L-shape. The proximal end side of the positioning wire 41 is extended to the hand operation unit 10 together with the operation tube 33 and the puncture rod 31b.

本実施形態の受面部22にも、心房中隔M1の端面若しくは縁部と当接する部位に圧力センサーSが設けられている。なお、本実施形態の接合手段30は、レーザーなどを照射することにより生体組織を融着乃至開始させるようにした熱エネルギ付与手段50Aである。第1実施形態のような電流を流すことにより生じるジュール熱により卵円孔弁M2と心房中隔M1を相互に融着あるいは壊死させて接合するものであってもよい。   The pressure sensor S is provided also in the site | part which contact | abuts the end surface or edge part of the atrial septum M1 also in the receiving surface part 22 of this embodiment. Note that the joining means 30 of the present embodiment is a thermal energy application means 50A in which living tissue is fused or started by irradiating a laser or the like. As in the first embodiment, the oval valve M2 and the atrial septum M1 may be fused or necrotated to each other by Joule heat generated by flowing an electric current.

本実施形態でも、まず、術者は、ガイドワイヤールーメンL3からガイドワイヤーを先行挿入し、PFOを通って左心房に向って伸延した後、本体ロッド12を押すことによりガイドワイヤーに沿うように本体ロッド12の先端部をカテーテル11から突出し、支持具21をPFOの右心房R側に位置させる。   Also in this embodiment, the surgeon first inserts the guide wire from the guide wire lumen L3, extends through the PFO toward the left atrium, and then pushes the main body rod 12 so as to follow the guide wire. The distal end portion of the rod 12 protrudes from the catheter 11 and the support 21 is positioned on the right atrial R side of the PFO.

次に、操作コード27を操作してサクション部材40を支持具21から卵円孔Oに向って突出すると、図9に示すように、負圧により卵円孔弁M2がサクション部材40に引き寄せられる。   Next, when the operation cord 27 is operated to protrude the suction member 40 from the support 21 toward the foramen ovale O, the foramen ovale valve M2 is attracted to the suction member 40 by a negative pressure as shown in FIG. .

本実施形態でも、カテーテル12の先端を心房中隔M1の端面に押し当てると、サクション部材40と受面部22との間の心房中隔M1が圧力センサーSに当接するかあるいは心房中隔M1により押圧されるので、支持具21の位置、つまりPFOに対する挿通部材31の位置の確認を、受面部22に設けられた圧力センサーSにより行うことができる。   Also in this embodiment, when the distal end of the catheter 12 is pressed against the end surface of the atrial septum M1, the atrial septum M1 between the suction member 40 and the receiving surface portion 22 comes into contact with the pressure sensor S, or the atrial septum M1. Since the pressure is pressed, the position of the support 21, that is, the position of the insertion member 31 with respect to the PFO can be confirmed by the pressure sensor S provided on the receiving surface portion 22.

PFOに対する挿通部材31の位置が正常であれば、操作管33を押圧し、挿通部材31を卵円孔弁M2と心房中隔M1に貫通する。この貫通後、位置決めワイヤー41を挿通部材31から突出し、牽引すると、図9に示すように、位置決めワイヤー41の先端が卵円孔弁M2の引き寄せ、心房中隔M1と卵円孔弁M2を密着させることができる。   If the position of the insertion member 31 with respect to the PFO is normal, the operation tube 33 is pressed, and the insertion member 31 penetrates the foramen ovale valve M2 and the atrial septum M1. After this penetration, when the positioning wire 41 protrudes from the insertion member 31 and is pulled, as shown in FIG. 9, the tip of the positioning wire 41 pulls the oval hole valve M2, and the atrial septum M1 and the oval hole valve M2 are brought into close contact with each other. Can be made.

この牽引時にも心房中隔M1が圧力センサーSを押すことになるので、圧力センサーSと生体組織との接触圧により心房中隔M1と卵円孔弁M2との間に適正な圧力が掛けられているか否か、つまり適正な挟持状態となっているか否かを検知できる。   Since the atrial septum M1 also presses the pressure sensor S during this pulling, an appropriate pressure is applied between the atrial septum M1 and the foramen ovale valve M2 by the contact pressure between the pressure sensor S and the living tissue. It can be detected whether or not it is in a proper clamping state.

挟持状態が適正であれば、熱エネルギ付与手段50Aを作動し、レーザー光を照射すると、卵円孔弁M2及び心房中隔M1に熱エネルギが供給され、卵円孔弁M2と心房中隔M1を融着乃至壊死させ、両者を接合させることができる。   If the clamping state is appropriate, when the thermal energy application means 50A is operated and laser light is applied, thermal energy is supplied to the foramen valve M2 and the atrial septum M1, and the foramen valve M2 and the atrial septum M1. Can be fused or necrotized to join them together.

<第3実施形態>
本実施形態は、整列手段20を、支持具21の直立壁23より受面部22に向って出没自在に設けられ、受面部22との間で心房中隔M1の端部若しくは縁部を挟持するように開き角度θが付与された挟持ワイヤー42により構成したものである。つまり、第2実施形態のサクション部材40を挟持ワイヤー42としたものである。
<Third Embodiment>
In this embodiment, the aligning means 20 is provided so as to be able to protrude and retract from the upright wall 23 of the support 21 toward the receiving surface portion 22, and the end portion or the edge portion of the atrial septum M <b> 1 is sandwiched between the alignment means 20 and the receiving surface portion 22. In this way, the holding wire 42 is provided with an opening angle θ. That is, the suction member 40 of the second embodiment is used as the holding wire 42.

図10は第3実施形態に係るデバイスの要部斜視図であり、図1〜9に示す部材と共通する部材には同一符号を付し、説明は省略する。   FIG. 10 is a perspective view of a main part of the device according to the third embodiment, and members common to those shown in FIGS.

本実施形態のデバイスは、図10に示すように、本体ロッド12の先端部分に設けられた支持具21のルーメンL2に、整列手段20としての挟持ワイヤー42を出没自在に設けている。挟持ワイヤー42は、前述の操作コード27と一体化され、牽引あるいは押し出し操作によりルーメンL2から出没自在に構成されている。   In the device of the present embodiment, as shown in FIG. 10, a clamping wire 42 as the aligning means 20 is provided so as to be able to appear and retract in the lumen L2 of the support 21 provided at the distal end portion of the main body rod 12. The sandwiching wire 42 is integrated with the operation cord 27 described above, and is configured to be able to appear and retract from the lumen L2 by a pulling or pushing operation.

本実施形態の受面部22にも、心房中隔M1の端面若しくは縁部と当接する部位に圧力センサーSを設けてもよいが、開き角度θが付与された挟持ワイヤー42と受面部22との間で心房中隔M1を挟持することになるため、圧力センサーSは、図10に示すように、直立壁23に設けることが好ましい。勿論、受面部22と直立壁23の両方に圧力センサーSを設けてもよいことはいうまでもない。なお、本実施形態の接合手段30も、レーザーなどを照射することにより生体組織を融着乃至開始させるようにした熱エネルギ付与手段50Aを使用することが好ましい。   The receiving surface portion 22 of the present embodiment may also be provided with a pressure sensor S at a site that contacts the end surface or edge of the atrial septum M1, but the holding wire 42 provided with an opening angle θ and the receiving surface portion 22 Since the atrial septum M1 is sandwiched between them, the pressure sensor S is preferably provided on the upright wall 23 as shown in FIG. Of course, it goes without saying that the pressure sensor S may be provided on both the receiving surface portion 22 and the upright wall 23. In addition, it is preferable that the joining means 30 of this embodiment also uses the thermal energy application means 50A in which the living tissue is fused or started by irradiating a laser or the like.

本実施形態も、ガイドワイヤーを先行挿入した後、本体ロッド12の先端部がカテーテル11から突出し、支持具21をPFOの右心房R側に位置させる。   Also in this embodiment, after the guide wire is inserted in advance, the distal end portion of the main body rod 12 protrudes from the catheter 11, and the support tool 21 is positioned on the right atrial R side of the PFO.

次に、操作コード27を操作して挟持ワイヤー42を支持具21から卵円孔Oに向って突出すると、図10に示すように、心房中隔M1の端面を受面部22と開き角度θが付与された挟持ワイヤー42との間で挟持する。開き角θは、特に限定されるものではないが、30度程度が好ましい。   Next, when the operation cord 27 is operated and the holding wire 42 protrudes from the support 21 toward the foramen ovale O, as shown in FIG. 10, the end surface of the atrial septum M1 is separated from the receiving surface 22 by the opening angle θ. It clamps between the provided clamping wires 42. The opening angle θ is not particularly limited, but is preferably about 30 degrees.

本実施形態も、カテーテル12の先端を心房中隔M1の端面に押し当てると、心房中隔M1が圧力センサーSに当接乃至押圧されるので、支持具21の位置の確認を圧力センサーSにより行うことができる。PFOに対する挿通部材31の位置が正常であれば、操作管33を押圧し、挿通部材31を卵円孔弁M2と心房中隔M1に貫通する。この貫通後、位置決めワイヤー41を挿通部材31から突出し、牽引すると、図10に示すように、位置決めワイヤー41の先端が卵円孔弁M2を引き寄せ、心房中隔M1と卵円孔弁M2を密着させることができる。   Also in this embodiment, when the distal end of the catheter 12 is pressed against the end face of the atrial septum M1, the atrial septum M1 is brought into contact with or pressed against the pressure sensor S, so that the position of the support 21 is confirmed by the pressure sensor S. It can be carried out. If the position of the insertion member 31 with respect to the PFO is normal, the operation tube 33 is pressed, and the insertion member 31 penetrates the foramen ovale valve M2 and the atrial septum M1. When the positioning wire 41 protrudes from the insertion member 31 and is pulled after this penetration, as shown in FIG. 10, the tip of the positioning wire 41 pulls the oval hole valve M2, and the atrial septum M1 and the oval hole valve M2 are brought into close contact with each other. Can be made.

この密着時にも心房中隔M1が圧力センサーSを押すことになるので、圧力センサーSと生体組織との接触圧により心房中隔M1と卵円孔弁M2との間に適正な圧力が掛かっているか否か、つまり適正な挟持状態となっているか否かを検知できる。なお、この場合の圧力センサーSの位置としては、受面部22とする方がより正確に挟持状態を検知できる。   Since the atrial septum M1 pushes the pressure sensor S even at the time of this close contact, an appropriate pressure is applied between the atrial septum M1 and the foramen ovale valve M2 by the contact pressure between the pressure sensor S and the living tissue. It can be detected whether or not it is in a proper clamping state. In addition, as a position of the pressure sensor S in this case, the clamping state can be detected more accurately by using the receiving surface portion 22.

挟持状態が適正であれば、熱エネルギ付与手段50Aを作動し、レーザー光を照射すると、卵円孔弁M2及び心房中隔M1に熱エネルギが供給され、卵円孔弁M2と心房中隔M1を融着乃至壊死させ、両者を接合させることができる。なお、第1実施形態のような電流を流すことにより生じるジュール熱により卵円孔弁M2と心房中隔M1を相互に融着あるいは壊死させて接合するものであってもよい。   If the clamping state is appropriate, when the thermal energy application means 50A is operated and laser light is applied, thermal energy is supplied to the foramen valve M2 and the atrial septum M1, and the foramen valve M2 and the atrial septum M1. Can be fused or necrotized to join them together. Note that, as in the first embodiment, the foramen ovale valve M2 and the atrial septum M1 may be joined to each other by fusion or necrosis by Joule heat generated by flowing current.

<第4実施形態>
本実施形態は、整列手段20として、卵円孔弁M2に穿刺する穿刺部材45と、心房中隔M1に当接し、穿刺部材45と共働して卵円孔弁M2と心房中隔M1の両者を挟持する挟持部材44と、から構成したものであり、また、この整列手段20は、前述の接合手段を兼用したものとなっている。穿刺部材45と挟持部材44との間に電流を流し、これにより生じるジュール熱で卵円孔弁M2と心房中隔M1を相互に融着あるいは壊死させて接合する熱エネルギ付与手段50が使用されている。
<Fourth embodiment>
In this embodiment, as the aligning means 20, the puncture member 45 that punctures the foramen ovale valve M2 and the atrial septum M1 are brought into contact with and cooperate with the puncture member 45 to establish the oval hole valve M2 and the atrial septum M1. The sandwiching member 44 sandwiches both of them, and the aligning means 20 also serves as the joining means described above. A thermal energy applying means 50 is used, in which an electric current is passed between the puncture member 45 and the pinching member 44 and the oval valve M2 and the atrial septum M1 are fused or necrotated to each other by Joule heat generated thereby. ing.

図11は第4実施形態に係るデバイスの要部斜視図、図12は同実施形態による生体組織の挟持状態を示す要部断面図であり、図1〜9に示す部材と共通する部材には同一符号を付し、説明は省略する。   FIG. 11 is a perspective view of a main part of a device according to the fourth embodiment, and FIG. 12 is a cross-sectional view of a main part showing a sandwiched state of a living tissue according to the embodiment. The members common to the members shown in FIGS. The same reference numerals are given, and description thereof is omitted.

本実施形態の整列手段20は、図11に示すように、心房中隔M1の一側面に直接接触する挟持部材44と、卵円孔弁M2に穿刺する穿刺部材45とから構成されている。挟持部材44と穿刺部材45は、いずれも電極部材として機能するものであり、基部が中空の本体ロッド12の先端に接合された支持具21に保持され、支持具21から突出されると、相互に対向する位置を取るように位置規制されて収納されている。   As shown in FIG. 11, the alignment means 20 of the present embodiment includes a clamping member 44 that directly contacts one side surface of the atrial septum M1, and a puncture member 45 that punctures the foramen ovale valve M2. Each of the holding member 44 and the puncture member 45 functions as an electrode member, and when the base portion is held by the support tool 21 joined to the tip of the hollow body rod 12 and protrudes from the support tool 21, It is housed in a position-restricted manner so as to take a position opposite to.

挟持部材44は、全体的に扁平な板状で所定の幅Wを有する平板部47と、基端部に接続された一対の線材部48とから構成され、支持具21のルーメンL4,L5によりその平面位置が規制されており、また、U字状に形成された線材部48の基端側に1本の操作コード27aが接続され、操作コード27aを軸方向に進退させることにより支持具21から突出したり、穿刺部材45側に向って近接するように変位する。   The sandwiching member 44 is composed of a flat plate portion 47 having a flat plate shape and a predetermined width W as a whole, and a pair of wire rod portions 48 connected to the base end portion, and is formed by the lumens L4 and L5 of the support tool 21. The planar position is restricted, and one operation cord 27a is connected to the proximal end side of the wire portion 48 formed in a U-shape, and the operation cord 27a is advanced and retracted in the axial direction to support the tool 21. It is displaced so as to protrude from or close to the puncture member 45 side.

線材部48は、折曲部48aと直状部48bを有し、直状部48bが支持具21のルーメンL4,L5に進退可能に挿通されているので、操作コード27aを牽引操作すれば、折曲部48aが支持具21のルーメンL4,L5の入口部分に入り込むとき、挟持部材44を穿刺部材45に対し、平面位置が規制された状態で近接離間するように変位させることができ、細い本体ロッド12の先端部であっても生体組織の挟持を容易にかつ円滑に行うことができる。   The wire portion 48 has a bent portion 48a and a straight portion 48b, and the straight portion 48b is inserted through the lumens L4 and L5 of the support 21 so as to be able to advance and retract. When the bent portion 48a enters the entrance portions of the lumens L4 and L5 of the support tool 21, the holding member 44 can be displaced so as to approach and separate from the puncture member 45 in a state where the planar position is regulated. Even at the tip of the main body rod 12, the living tissue can be easily and smoothly sandwiched.

挟持部材44は、平板部1aの材質としては、SUS材であってもよいが、電極としての機能を果たし、生体に悪影響を及ぼさないもの、例えば、金、銀、白金、タングステン、パラジウムまたはこれらを含む合金や、Ni-Ti合金、チタン合金等を使用することが好ましい。   The holding member 44 may be a SUS material as a material of the flat plate portion 1a, but functions as an electrode and does not adversely affect the living body, such as gold, silver, platinum, tungsten, palladium, or these It is preferable to use an alloy containing Ni, a Ti—Ti alloy, a titanium alloy, or the like.

穿刺部材45は、支持具21に形成されたルーメンL6,L7によりその平面位置が規制された状態で進退可能に保持されており、また、U字状に形成された基端側に接続されている操作コード27bを操作することにより先端部が支持具21より出没し得るようになっている。   The puncture member 45 is held so as to be able to advance and retreat in a state where the plane position thereof is regulated by the lumens L6 and L7 formed on the support tool 21, and is connected to the proximal end side formed in a U shape. By operating the operation code 27b, the distal end portion can appear and disappear from the support tool 21.

穿刺部材45は、軸直角断面が円形の、先端が鋭利に尖った極めて細い2本の針部材が相互に離間し、かつ、突出されると先端が拡開するように弾性が付与されている。このような穿刺部材45により卵円孔弁M2を穿刺すれば、様々な形態の卵円孔弁M2や心房中隔M1であっても、穿刺部材45を卵円孔弁M2に位置決めすることができ、卵円孔弁M2と心房中隔M1の挟持操作が容易になる。なお、先端が拡開するよう構成すれば、広範囲の卵円孔弁M2を融着させることができることになり、手技の容易化、迅速化、確実化に寄与する。   The puncture member 45 is provided with elasticity so that two extremely thin needle members having a circular cross section perpendicular to the axis and sharply pointed at the tip are separated from each other, and the tip expands when protruded. . If the foramen ovale valve M2 is punctured by such a puncture member 45, the puncture member 45 can be positioned at the foramen ovale valve M2, even in various forms of the foramen valve M2 and the atrial septum M1. This makes it easier to clamp the foramen valve M2 and the atrial septum M1. In addition, if it comprises so that a front-end | tip may be expanded, it will be possible to fuse | melt the wide-range oval valve M2, and it contributes to the simplification, speeding-up, and certainty of a procedure.

穿刺部材45は、針部材として機能するものであればどのようなものであってもよく、中実の針部材のみでなく、中空の円環状のものであってもよい。針部材の外径としては、0.1mm〜2mmのものが好ましい。材質としては、SUSが使用されるが、生体に悪影響を及ぼさないもの、例えば、金、銀、白金、タングステン、パラジウム、チタンまたはこれらを含む合金、Ni−Ti合金等を使用することもできる。本実施形態では、2本の針部材を使用しているが、さらに多数であってもよい。   The puncture member 45 may be any member as long as it functions as a needle member, and may be not only a solid needle member but also a hollow annular member. The outer diameter of the needle member is preferably 0.1 mm to 2 mm. As the material, SUS is used, but materials that do not adversely affect the living body, such as gold, silver, platinum, tungsten, palladium, titanium, alloys containing these, Ni-Ti alloys, and the like can also be used. In this embodiment, two needle members are used, but a larger number may be used.

挟持部材44や穿刺部材45を本体ロッド12から出没させる操作コード27a、27bとしては、細い線状の部材であり、ルーメンL1内で進退可能で、電気導通性があれば、どのようなものであってもよい。例えば、ステンレス、Ni-Ti、チタンなどのワイヤーを使用することが好ましい。   The operation cords 27a and 27b for moving the clamping member 44 and the puncture member 45 in and out of the main body rod 12 are thin linear members, can be moved back and forth in the lumen L1, and any electrical conductivity can be used. There may be. For example, it is preferable to use a wire such as stainless steel, Ni—Ti, or titanium.

各操作コード27a、27bは、本体ロッド12内を挿通し、手元操作部10及び熱エネルギ付与手段50と電気的に接続されている。   The operation cords 27 a and 27 b are inserted through the main body rod 12 and are electrically connected to the hand operation unit 10 and the thermal energy application means 50.

本実施形態では、挟持部材44や穿刺部材45は当初支持具21と共にカテーテル11のルーメンL1内に収容した状態とする。そして、術者は、ガイドワイヤールーメンL3からガイドワイヤーを先行挿入し、PFOを通って左心房に向って伸延した後、本体ロッド12を押すことによりガイドワイヤーに沿うように本体ロッド12の先端部をカテーテル11から突出し、支持具21をPFOの右心房R側に位置させる。   In the present embodiment, the holding member 44 and the puncture member 45 are initially housed in the lumen L <b> 1 of the catheter 11 together with the support tool 21. The surgeon inserts the guide wire from the guide wire lumen L3 in advance, extends toward the left atrium through the PFO, and then pushes the main body rod 12 so that the distal end portion of the main body rod 12 extends along the guide wire. Is protruded from the catheter 11 and the support 21 is positioned on the right atrial R side of the PFO.

本実施形態も、支持具21を心房中隔M1の端面に押し当てると、受面部22の圧力センサーSに心房中隔M1が当接乃至押圧されるので、支持具21の位置、つまりPFOに対する支持具21の位置の確認ができる。   Also in this embodiment, when the support tool 21 is pressed against the end surface of the atrial septum M1, the atrial septum M1 is brought into contact with or pressed against the pressure sensor S of the receiving surface portion 22, so that the position of the support tool 21, that is, the PFO The position of the support tool 21 can be confirmed.

PFOに対する支持具21の位置が正常であれば、操作コード27bを操作して穿刺部材45を支持具21から突出し、この状態で本体ロッド12を卵円孔Oに向って前進させ、穿刺部材45を卵円孔弁M2に穿刺する。この穿刺により穿刺部材45は卵円孔弁M2に位置決めされることになる。   If the position of the support tool 21 with respect to the PFO is normal, the operation cord 27b is operated to project the puncture member 45 from the support tool 21, and in this state, the main body rod 12 is advanced toward the foramen ovale O, and the puncture member 45 Is punctured into the foramen valve M2. By this puncturing, the puncture member 45 is positioned at the foramen ovale valve M2.

穿刺後、操作コード27aを操作して挟持部材44を支持具21から突出させる。この突出により挟持部材44は、穿刺部材45と対向した位置となる。次に、操作コード27aを牽引操作すると、挟持部材44は、折曲部48aが支持具21のルーメンL4,L5の入口部分に入り込むとき、穿刺部材45に近接するように変位し、穿刺部材45が穿刺している卵円孔弁M2に向かって心房中隔M1の一部を伴って近接し、図12に示すように、卵円孔弁M2と心房中隔M1とを挟持し密着させることができる。   After puncturing, the operation cord 27a is operated to cause the holding member 44 to protrude from the support tool 21. Due to this protrusion, the holding member 44 is positioned opposite the puncture member 45. Next, when the operation cord 27a is pulled, the clamping member 44 is displaced so as to be close to the puncture member 45 when the bent portion 48a enters the entrance portions of the lumens L4 and L5 of the support tool 21, and the puncture member 45 is moved. Is approached with a part of the atrial septum M1 toward the foramen ovale valve M2 punctured, and as shown in FIG. 12, the oval valve M2 and the atrial septum M1 are clamped and brought into close contact with each other. Can do.

本実施形態も、この挟持時に、心房中隔M1が圧力センサーSを押すことになるので、挟持状態の心房中隔M1と卵円孔弁M2との間に適正な圧力が掛けられているか否かを検知できる。   Also in this embodiment, since the atrial septum M1 pushes the pressure sensor S during this clamping, whether or not an appropriate pressure is applied between the atrial septum M1 in the clamping state and the foramen ovale valve M2 Can be detected.

この挟持状態が適正であれば、熱エネルギ付与手段50を作動し、挟持部材44と穿刺部材45との間に電流を流すと、卵円孔弁M2及び心房中隔M1に熱エネルギが供給され、所定の融着温度を維持しつつ加熱を継続すると、心房中隔M1と卵円孔弁M2の組織が溶融し、コラーゲンやエラスチンなどの接着因子により相互に融着される。   If this clamping state is appropriate, when the thermal energy application means 50 is operated and an electric current is passed between the clamping member 44 and the puncture member 45, thermal energy is supplied to the foramen ovale valve M2 and the atrial septum M1. When heating is continued while maintaining a predetermined fusion temperature, the tissues of the atrial septum M1 and the foramen ovale valve M2 are melted and fused to each other by an adhesion factor such as collagen or elastin.

なお、電気エネルギは、制御部により出力を低く制御し、血栓の付着が生じにくくしているので、挟持部材44と穿刺部材45の一部が血液中に露出していても、挟持部材44や穿刺部材45に血栓の付着を防止できる。ただし、挟持部材44や穿刺部材45の血液露出面に熱伝導を抑えるコーティングをすれば、血栓の付着は一層確実に防止されることになり、好ましい。   The electrical energy is controlled to be low by the control unit so that thrombus does not easily adhere. Therefore, even if part of the clamping member 44 and the puncture member 45 is exposed in the blood, the clamping member 44 and Thrombus can be prevented from adhering to the puncture member 45. However, it is preferable to apply a coating that suppresses heat conduction on the blood exposed surfaces of the holding member 44 and the puncture member 45, because adhesion of thrombus can be prevented more reliably.

融着が完了すると、電気エネルギの供給を停止し、穿刺部材45などを支持具21内に収容する。そして、ガイディングカテーテル11と手元操作部10との連結を解き、手元操作部10を外し、ガイディングカテーテル11をガイドとして本体ロッド12を引き出す。この後、ガイディングカテーテル11を生体から抜去すると、手技は完了する。なお、手技の完了後、穿刺部材45の抜去により卵円孔弁M2には極めて小さな穴が残るが、後に治癒され、血栓の発生などの悪影響が生じることはない。   When the fusion is completed, the supply of electric energy is stopped, and the puncture member 45 and the like are accommodated in the support tool 21. Then, the connection between the guiding catheter 11 and the hand operation unit 10 is released, the hand operation unit 10 is removed, and the main body rod 12 is pulled out using the guiding catheter 11 as a guide. Thereafter, when the guiding catheter 11 is removed from the living body, the procedure is completed. After the procedure is completed, an extremely small hole remains in the foramen ovale valve M2 by removing the puncture member 45, but it is healed later, and there is no adverse effect such as generation of a thrombus.

本実施形態は、圧力センサーSを支持具21に設けたものであるが、これのみでなく、図13に示すように、平板部47の一部に圧力センサーSを設けてもよい。圧力センサーSは、安全のため、平板部47内に埋設し、表面が同一面となるようにすることが好ましい。なお、図中47aは断熱材である。   In the present embodiment, the pressure sensor S is provided on the support 21. However, the pressure sensor S may be provided on a part of the flat plate portion 47 as shown in FIG. For safety, the pressure sensor S is preferably embedded in the flat plate portion 47 so that the surfaces thereof are the same surface. In the figure, 47a is a heat insulating material.

このように平板部47に圧力センサーSを設けると、挟持部材44と穿刺部材45とにより卵円孔弁M2と心房中隔M1とを密着させた状態が確認できるのみでなく、平板部47と穿刺部材45とにより生体組織に加えられる把持力も検知することができる。特に、卵円孔弁M2と心房中隔M1とを融着させるときは、安定した把持力で生体組織を挟持し、卵円孔弁と心房中隔とも密着状態を維持する必要がある。本変形例では、このような把持力を、平板部47に圧力センサーSを設けたことにより直接的に検知することができることから、融着の確実性、安全性などがより高められることになる。   Thus, when the flat plate portion 47 is provided with the pressure sensor S, not only can the state in which the oval valve M2 and the atrial septum M1 are brought into close contact with each other by the clamping member 44 and the puncture member 45 be confirmed, The grasping force applied to the living tissue by the puncture member 45 can also be detected. In particular, when the foramen valve M2 and the atrial septum M1 are fused, it is necessary to hold the living tissue with a stable gripping force and maintain a close contact state between the foramen valve and the atrial septum. In this modification, since such a gripping force can be directly detected by providing the flat plate portion 47 with the pressure sensor S, the reliability and safety of fusion are further improved. .

上述した実施形態では、接合手段30は、電気的あるいは光学的な熱エネルギ付与手段50であるが、本発明では、これのみでなく機械的な手段、例えば、図14(A)(B)に示すようなクリップ手段51a,51bを用いてもよい。   In the embodiment described above, the joining means 30 is the electrical or optical thermal energy applying means 50. However, in the present invention, not only this but also mechanical means, for example, FIG. 14 (A) (B). Clip means 51a and 51b as shown may be used.

これらクリップ手段51(51a,51bの総称)は、血栓が付着しないものであれば、形状記憶金属など種々のものを使用することができる。   As these clip means 51 (generic name of 51a, 51b), various types such as shape memory metal can be used as long as thrombus does not adhere to them.

クリップ手段51による接合は、例えば、図6に示すような挿通部材31内に操作ロッド(図示せず)を設け、操作ロッドの進退により挿通部材31の先端から押し出されるように構成し、挿通部材31が開設した卵円孔弁M2と心房中隔M1の下孔に押し出すようにすればよい。この押し出しによりクリップ手段51は、図15に示すように、卵円孔弁M2と心房中隔M1を密着させるように係合し、卵円孔Oを閉塞することになる。   For the joining by the clip means 51, for example, an operation rod (not shown) is provided in the insertion member 31 as shown in FIG. 6, and the insertion member 31 is pushed out from the tip of the insertion member 31 by the advancement and retraction of the operation rod. What is necessary is just to extrude into the lower hole of the foramen ovale valve M2 and the atrial septum M1 which 31 established. As shown in FIG. 15, the clip means 51 is engaged with the oval hole valve M <b> 2 and the atrial septum M <b> 1 in close contact with each other, thereby closing the oval hole O.

第2の発明の実施形態を説明するが、第1の発明と共通する部分は省略し、要部のみについて述べる。   Although an embodiment of the second invention will be described, parts common to the first invention are omitted, and only the main part will be described.

図16は、第2の発明に係るPFO閉鎖デバイスを示す要部概略図である。図16に示すように、本発明に係る医療デバイスは、本体ロッド12の先端部に、生体組織との接触圧を緩衝する緩衝材Cを設けたものである。緩衝材Cを設ける位置としては、前述した医療デバイスの整列手段20や接合手段30などの機能を邪魔しない部分であれば、どのような位置であってもよいが、本実施形態では、本体ロッド12の先端部に設けられた支持具21において、受面部22と直立壁23が生体組織と接触する部分としている。勿論、このような位置のみでなく、受面部22のみあるいは直立壁23のみであってもよく、さらに、図中一点鎖線で示すように、緩衝材Cが支持具21全体を覆うようにしてもよい。   FIG. 16 is a main part schematic diagram showing a PFO closure device according to the second invention. As shown in FIG. 16, the medical device according to the present invention is provided with a cushioning material C that cushions the contact pressure with the living tissue at the tip of the main body rod 12. The position where the cushioning material C is provided may be any position as long as it does not interfere with the functions of the alignment means 20 and the joining means 30 of the medical device described above. In the support tool 21 provided at the distal end portion of 12, the receiving surface portion 22 and the upright wall 23 are portions that come into contact with the living tissue. Of course, not only such a position, but also only the receiving surface portion 22 or the upright wall 23 may be used. Further, as shown by a one-dot chain line in the figure, the cushioning material C may cover the entire support 21. Good.

このようにすれば、生体組織の端部などと本体ロッド12が接触したとき、不必要に生体組織を加圧したり傷つけることを防止することができ、生体組織の保護が確実な、極めて安全性の高い、使い勝手のよい、医療用デバイスとなる。   In this way, when the end of the living tissue and the body rod 12 come into contact with each other, the living tissue can be prevented from being unnecessarily pressurized or damaged, and the living tissue is reliably protected and extremely safe. It becomes a high-use, easy-to-use medical device.

本発明は、上述した実施形態のみに限定されるものではなく、本発明の技術的思想内において当業者により種々変更が可能である。例えば、前述の実施形態では、PFOの閉鎖であるため、心房中隔M1と卵円孔弁M2の組織を熱融着するものであるが、本発明は、これのみに限定されるものではなく、左心耳閉鎖デバイス(Left Atrial Appendage)といった通路状の欠損を閉鎖する場合や、あるいは所定の部位の生体組織Mを熱的に壊死させる場合にも使用可能である。   The present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art within the technical idea of the present invention. For example, in the above-described embodiment, since the PFO is closed, the tissues of the atrial septum M1 and the foramen ovale valve M2 are heat-sealed. However, the present invention is not limited to this. It can also be used to close a passage-like defect such as a left atrial appendage closure device (Left Atrial Appendage) or to thermally necrotize a living tissue M at a predetermined site.

本発明は、生体組織の欠損部を、簡単かつ安全に閉鎖可能なデバイスとして利用できる。   INDUSTRIAL APPLICATION This invention can be utilized as a device which can close the defect | deletion part of a biological tissue simply and safely.

10…手元操作部、
11…カテーテル、
12…本体ロッド、
20…整列手段、
21…支持具、
22…受面部、
26…拡張ワイヤー、
30…接合手段、
31…挿通部材、
32…網状部材、
40…サクション部材、
41…位置決めワイヤー、
42…挟持ワイヤー、
44…挟持部材、
45…穿刺部、
50,50A…熱エネルギ付与手段、
51…クリップ手段、
C…緩衝材、
M1…心房中隔、
M2…卵円孔弁、
S…圧力センサー。
10: Hand control unit,
11 ... catheter,
12 ... Body rod,
20 ... alignment means,
21 ... Supporting tool,
22 ... receiving surface part,
26 ... Expansion wire,
30: Joining means,
31 ... insertion member,
32 ... mesh member,
40 ... Suction member,
41 ... positioning wire,
42 ... sandwiching wire,
44 ... clamping member,
45 ... Puncture part,
50, 50A ... thermal energy applying means,
51. Clip means,
C ... cushioning material,
M1 ... Atrial septum,
M2 ... foramen valve,
S: Pressure sensor.

Claims (14)

カテーテル内に軸線方向に進退可能に設けられた本体ロッドと、
当該本体ロッドの先端に設けられ、第1生体組織と第2生体組織を重積状に整列させる整列手段と、
前記カテーテルの基端部に設けられ前記整列手段を操作する手元操作部と、
前記整列された両生体組織相互を接合させる接合手段と、
を有する医療用デバイスであって、
前記本体ロッドの先端部に前記生体組織との接触圧を検知する圧力センサーを有し、
前記本体ロッドは、先端部に前記整列手段を収納し保持する支持具を有し、当該支持具における、前記整列手段が整列させる前記生体組織のいずれか一方の端部若しくは縁部と接する部位に前記圧力センサーを設けたことを特徴とする医療用デバイス。
A body rod provided in the catheter so as to be movable back and forth in the axial direction;
An alignment means provided at the tip of the main body rod for aligning the first biological tissue and the second biological tissue in a stacked manner;
A hand operating part that is provided at the proximal end of the catheter and operates the alignment means;
A joining means for joining the aligned biological tissues together;
A medical device comprising:
A pressure sensor for detecting a contact pressure with the living tissue at a tip of the body rod ;
The main body rod has a support that houses and holds the alignment means at the tip, and a portion of the support that is in contact with one end or edge of the living tissue to be aligned by the alignment means. A medical device comprising the pressure sensor .
前記整列手段は、前記第1組織と前記第2組織との間の孔を拡開する拡張ワイヤーと、前記本体ロッド若しくは前記支持具に形成された受面部と、から構成したことを特徴とする請求項1に記載の医療用デバイス。 The alignment means includes an extension wire that widens a hole between the first tissue and the second tissue, and a receiving surface portion formed on the main body rod or the support. The medical device according to claim 1. 前記整列手段は、前記本体ロッド若しくは前記支持具に形成された受面部と、当該本体ロッド若しくは前記支持具に設けられ、負圧により前記生体組織の少なくとも一方を吸引し変位させるサクション部材と、から構成したことを特徴とする請求項に記載の医療用デバイス。 The alignment means includes: a receiving surface portion formed on the main body rod or the support; and a suction member provided on the main body rod or the support and sucking and displacing at least one of the living tissue by negative pressure. The medical device according to claim 1 , wherein the medical device is configured. 前記整列手段は、前記本体ロッド若しくは前記支持具に形成された受面部と、前記整列手段により重積状に整列された前記両生体組織を穿刺し挿通する挿通部材と、前記挿通部材に出没自在に設けられ、前記生体組織の一方を引き寄せる位置決めワイヤーと、から構成したことを特徴とする請求項に記載の医療用デバイス。 The alignment means includes a receiving surface portion formed on the main body rod or the support, an insertion member that punctures and penetrates the two biological tissues aligned in a stacked manner by the alignment means, and can freely appear and disappear in the insertion member. The medical device according to claim 1 , wherein the medical device is provided with a positioning wire that attracts one of the living tissues . 前記接合手段は、前記挿通部材に設けられ前記手元操作部の操作により放射状に拡開され、前記受面部との間で前記両生体組織を挟持する網状部材を有する請求項4に記載の医療用デバイス。 The medical device according to claim 4 , wherein the joining unit includes a net-like member that is provided on the insertion member and is radially expanded by the operation of the hand operation unit, and sandwiches both the living tissues with the receiving surface unit . device. 前記整列手段は、前記本体ロッド若しくは前記支持具に形成された受面部と、当該本体ロッド若しくは前記支持具より前記受面部に向って出没自在に設けられ、当該受面部の平坦部との間で前記生体組織のいずれか一方の端部若しくは縁部を挟持するように開き角度が付与された挟持ワイヤーと、から構成したことを特徴とする請求項に記載の医療用デバイス。 The alignment means is provided between a receiving surface portion formed on the main body rod or the support and a flat portion of the receiving surface portion provided so as to be able to protrude from the main body rod or the support toward the receiving surface. The medical device according to claim 1 , comprising: a holding wire provided with an opening angle so as to hold any one end or edge of the living tissue. 前記整列手段及び前記接合手段は、前記生体組織のいずれか一方に穿刺される穿刺部材と、前記生体組織のいずれか他方に当接し、前記穿刺部材と共働して前記両生体組織を挟持する挟持部材と、から構成したことを特徴とする請求項に記載の医療用デバイス。 The alignment means and the joining means abut against either one of the living tissues and the other of the living tissues, and cooperate with the puncturing member to sandwich the living tissues. The medical device according to claim 1 , comprising a clamping member. 前記圧力センサーは、前記生体組織と接する部位に緩衝材を有することを特徴とする請求項に記載の医療用デバイス。 The medical device according to claim 1 , wherein the pressure sensor has a buffer material at a site in contact with the living tissue. 前記圧力センサーは、前記生体組織との接触圧が所定の閾値を越えると警告手段を作動させることを特徴とする請求項に記載の医療用デバイス。 The medical device according to claim 1 , wherein the pressure sensor activates a warning unit when a contact pressure with the living tissue exceeds a predetermined threshold value. 前記接合手段は、前記整列手段により重積状に整列された前記両生体組織を穿刺し挿通する挿通部材と、当該挿通部材に設けられ前記手元操作部の操作により放射状に拡開され、前記受面部との間で前記両生体組織を挟持する網状部材と、を有する請求項2、3、6のいずれかに記載の医療用デバイス。 The joining means includes an insertion member that punctures and penetrates the two biological tissues aligned in a stacked manner by the alignment means, and is radially expanded by the operation of the hand operation unit provided in the insertion member, The medical device according to claim 2 , further comprising: a net-like member that sandwiches both the living tissues with a surface portion. 前記接合手段は、挟持した前記両生体組織を接合させる熱エネルギを付与する熱エネルギ付与手段を有する請求項〜7又は10のいずれかに記載の医療用デバイス The medical device according to any one of claims 2 to 7 or 10, wherein the joining means includes thermal energy application means for applying thermal energy for joining the both living tissues sandwiched therebetween. 前記熱エネルギ付与手段は、挟持した前記両生体組織のインピーダンスにより電流を制御するバイポーラ方式である請求項11に記載の医療用デバイス。   The medical device according to claim 11, wherein the thermal energy applying unit is a bipolar system that controls an electric current based on an impedance of the sandwiched biological tissues. 前記接合手段は、前記整列手段により重積状に整列された前記両生体組織を穿刺し挿通する挿通部材と、当該挿通部材により形成された貫通孔に挿通され、前記両生体組織を挟持するクリップ手段と、から構成したことを特徴とする請求項2、3、6のいずれかに記載の医療用デバイス。 The joining means includes an insertion member that punctures and penetrates the two biological tissues aligned in a stack by the alignment means, and a clip that is inserted through a through-hole formed by the insertion member and sandwiches the two biological tissues. The medical device according to any one of claims 2 , 3 , and 6 , characterized by comprising: 前記接合手段は、前記挿通部材により形成された貫通孔に挿通され、前記両生体組織を挟持するクリップ手段を有する請求項4に記載の医療デバイス。  The medical device according to claim 4, wherein the joining means includes clip means that is inserted into a through hole formed by the insertion member and sandwiches both the living tissues.
JP2009072781A 2009-03-24 2009-03-24 Medical device Active JP5380122B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009072781A JP5380122B2 (en) 2009-03-24 2009-03-24 Medical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009072781A JP5380122B2 (en) 2009-03-24 2009-03-24 Medical device

Publications (2)

Publication Number Publication Date
JP2010220885A JP2010220885A (en) 2010-10-07
JP5380122B2 true JP5380122B2 (en) 2014-01-08

Family

ID=43038727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009072781A Active JP5380122B2 (en) 2009-03-24 2009-03-24 Medical device

Country Status (1)

Country Link
JP (1) JP5380122B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7487176B2 (en) * 2018-08-22 2024-05-20 マジック リープ, インコーポレイテッド Patient Visibility System
CN110960286A (en) * 2020-01-21 2020-04-07 福建骏格科技有限公司 Portable bullet wound trajectory internal hemorrhage rapid hemostasis device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001198136A (en) * 2000-01-19 2001-07-24 Olympus Optical Co Ltd Energy treating system for operation
US8062309B2 (en) * 2005-08-19 2011-11-22 Boston Scientific Scimed, Inc. Defect occlusion apparatus, system, and method
US7837619B2 (en) * 2005-08-19 2010-11-23 Boston Scientific Scimed, Inc. Transeptal apparatus, system, and method
US7998095B2 (en) * 2005-08-19 2011-08-16 Boston Scientific Scimed, Inc. Occlusion device
JP5236502B2 (en) * 2006-02-22 2013-07-17 ハンセン メディカル,インク. System and apparatus for measuring distal force of a work implement
EP1986559B1 (en) * 2006-02-24 2012-03-28 Terumo Kabushiki Kaisha Pfo closing device

Also Published As

Publication number Publication date
JP2010220885A (en) 2010-10-07

Similar Documents

Publication Publication Date Title
KR101299751B1 (en) Pfo closing device
JP5349852B2 (en) Medical device
US20190216536A1 (en) Ablation probe fixation
JP5380122B2 (en) Medical device
JP2009050588A (en) Pfo closing device
JP5451132B2 (en) Medical device
JP2010220883A (en) Medical device
JP5289808B2 (en) Biological tissue closure device
JP5311632B2 (en) Biological tissue closure device
JP5059670B2 (en) Biological tissue closure device
JP5311631B2 (en) Biological tissue closure device
JP5484803B2 (en) Medical device
JP5873475B2 (en) PFO closure device
JP2009050590A (en) Pfo closing device
JP2009050593A (en) Pfo closing device
JP2009050587A (en) Pfo closing device
WO2014049676A1 (en) Medical device
JP2009000445A (en) Medical device
JP2009050586A (en) Pfo closing device
JP2012200528A (en) Medical device
JP2009050585A (en) Pfo closing device
JP2014064623A (en) Medical device
JP2012200529A (en) Medical device
JP2012200280A (en) Medical device
JP2013252156A (en) Medical device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120306

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130509

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130514

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130710

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130910

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130930

R150 Certificate of patent or registration of utility model

Ref document number: 5380122

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250