JPH0263858U

JPH0263858U -

Info

Publication number: JPH0263858U
Application number: JP14225588U
Authority: JP
Priority date: 1988-10-31
Filing date: 1988-10-31
Publication date: 1990-05-14
Also published as: JPH044730Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の第１実施例を示すカテーテ
ル本体の先端部の拡大断面図、第２図は同上の一
部省略した全体の平面図、第３図は第１実施例を
バルーン付きカテーテルに適用した例を示すカテ
ーテル本体の先端部の拡大断面図、第４図は第２
実施例を示すカテーテル本体の先端部の拡大断面
図、第５図は第２実施例の変形例を示すカテーテ
ル本体の先端部の拡大断面図、第６図Ａ，Ｂは第
３実施例を示すそれぞれカテーテル本体の先端部
の拡大断面図、第７図は従来例を示すカテーテル
本体の先端部の拡大断面図である。１…カテーテル、２，２′…環状段部、３…先
端筒、５…保持筒、６…テーパ、７，７′…先端
部材、１１…コネクター部、１２…内腔、１４…
バルーン、１５…取付筒部、１６…小孔、１８…
湾曲面。 Fig. 1 is an enlarged sectional view of the distal end of the catheter body showing the first embodiment of this invention, Fig. 2 is a plan view of the same as above with a part omitted, and Fig. 3 shows the first embodiment of the catheter as a catheter with a balloon. FIG. 4 is an enlarged sectional view of the distal end of the catheter body showing an example where
FIG. 5 is an enlarged sectional view of the tip of the catheter body showing a modification of the second embodiment; FIGS. 6A and B show the third embodiment. FIG. 7 is an enlarged sectional view of the distal end of the catheter main body, and FIG. 7 is an enlarged sectional view of the distal end of the catheter main body, respectively, showing a conventional example. DESCRIPTION OF SYMBOLS 1... Catheter, 2, 2'... Annular step part, 3... Tip tube, 5... Holding tube, 6... Taper, 7, 7'... Tip member, 11... Connector part, 12... Inner lumen, 14...
Balloon, 15... Attachment cylinder part, 16... Small hole, 18...
curved surface.

Claims

[Claims for Utility Model Registration] 1. A catheter whose main body is made of a flexible material such as resin, in which an annular step is cut out on the outer peripheral surface of the distal end of the catheter main body, and the annular step is covered with rubber. A distal tube with openings at both ends made of a soft elastic material, such as, has a distal end surface that protrudes a predetermined length from the distal end surface of the catheter body, is rounded, and has an outer peripheral surface flush with the outer peripheral surface of the catheter main body. A catheter characterized in that the catheter is fitted and bonded. 2. The catheter according to claim 1, wherein the protruding length of the tip tube is approximately equal to the wall thickness of the catheter body. 3. In the catheter according to claim 1, a ring-shaped holding tube, which is made of the same material as the tip tube and is made of the same material as the tip tube and holds the tip tube so as not to deform, is provided on the inner circumferential surface of the protruding portion of the tip tube. A catheter whose rear end surface is fitted and adhered to the distal end surface of the catheter body, and its rear end surface is aligned with the distal end surface of the catheter body. 4. The catheter according to claim 3, wherein the inner circumferential surface of the holding cylinder is formed to expand from the rear end toward the tip. 5. In a catheter whose catheter body is made of a flexible material such as resin, an annular stepped portion is cut out on the outer circumferential surface of the distal end of the catheter body, and openings at both ends are formed in the annular stepped portion made of a soft elastic material such as rubber. The distal end tube is fitted and bonded with its distal end surface aligned with the distal end surface of the catheter body and its outer peripheral surface flush with the outer circumferential surface of the catheter main body, and the distal end tube and the distal end tube are attached to both distal end surfaces of the catheter body. A catheter characterized in that a ring-shaped tip member made of the same material is bonded and the tip surface of the tip member is rounded.