JPH0422908U

JPH0422908U -

Info

Publication number: JPH0422908U
Application number: JP1990064651U
Authority: JP
Priority date: 1990-06-19
Filing date: 1990-06-19
Publication date: 1992-02-25
Anticipated expiration: 2003-12-06
Also published as: JPH0546419Y2

Description

[Brief explanation of the drawing]

第１図は本考案の実施例による管状器官の治療
具をカテーテル内に挿入した状態を示す断面図、
第２図は上記治療具における金属コイルの形状復
帰した状態を示す斜視図、第３図は上記治療具に
おけるキヤツプの装着状態の一例を示す部分断面
図、第４図は上記治療具におけるキヤツプの装着
状態の他の例を示す部分断面図、第５図は上記治
療具の金属コイルを芯線に保持させてカテーテル
から押し出した状態を示す断面図、第６図は上記
治療具の金属コイルから芯線を抜き出して形状復
帰させた状態を示す断面図、第７図は従来の拡張
具を用いて血管の狭窄部を拡張する方法を示す図
である。図中、１１は金属コイル、１２ａは一次コイル
、１２ｂは二次コイル、１３は線材、１４は頭部
、１５はキヤツプ、１６は挿通孔、１７は芯線、
１８はプツシヤー、２１はカテーテル、３１は血
管である。 FIG. 1 is a sectional view showing a state in which a tubular organ treatment device according to an embodiment of the present invention is inserted into a catheter;
FIG. 2 is a perspective view showing a state in which the metal coil in the treatment device has returned to its shape, FIG. 3 is a partial sectional view showing an example of the state in which the cap is attached to the treatment device, and FIG. 4 is a perspective view of the cap in the treatment device. A partial cross-sectional view showing another example of the installed state, FIG. 5 is a cross-sectional view showing a state in which the metal coil of the treatment device is held by the core wire and pushed out from the catheter, and FIG. 6 is a partial cross-sectional view showing the metal coil of the treatment device held by the core wire and pushed out from the catheter. FIG. 7 is a cross-sectional view showing a state in which the blood vessel has been extracted and restored to its shape, and FIG. 7 is a diagram showing a method of dilating a narrowed portion of a blood vessel using a conventional dilator. In the figure, 11 is a metal coil, 12a is a primary coil, 12b is a secondary coil, 13 is a wire, 14 is a head, 15 is a cap, 16 is an insertion hole, 17 is a core wire,
18 is a pusher, 21 is a catheter, and 31 is a blood vessel.

Claims

[Claims for Utility Model Registration] (1) A primary coil is formed by forming a metal wire into a coil, this primary coil is further formed into a coil to form a secondary coil, and a head is attached to the tip of the primary coil. a metal coil with a cap having an insertion hole attached to the rear end of the primary coil; a metal coil that is removably inserted into the primary coil of the metal coil through the insertion hole of the cap, and the tip of the metal coil is inserted into the primary coil of the metal coil through the insertion hole of the cap; a core wire that engages with the head and maintains the primary coil in a straight line; and a core wire that is arranged around the outer periphery of the core wire and whose tip engages with the cap that is attached to the primary coil to move the core wire away from the primary coil. A tubular organ treatment tool comprising: a tube-shaped pusher that prevents the primary coil from retreating when the primary coil is extracted. (2) The device for treating tubular organs according to claim 1, wherein the metal coil is made of a shape memory alloy having a transformation point lower than body temperature.