Catheter handle and tip-deflectable steerable catheter

Abstract

The purpose of the present invention is to provide a handle capable of making the amount of operating wire drawn sufficiently long and capable of inserting a tube part extending from a lumen of a catheter shaft into the inside of a handle body without contacting a rotary plate or the operating wire. The handle (100) of the present invention is provided with a handle body (10), comprising a first handle member (11) and a second handle member (12), and a rotary operation part (20); the rotary operation part is provided with a rotary plate (25), a first spacer member (21) mounted non-rotatably on the handle body, and a second spacer member (22) mounted non-rotatably on the handle body; the rotary plate has a guide rail (251) that prescribes the route of the operating wires (501, 502) in the rotary operation part so as to detour along the circumferential direction of the rotary plate; and guide passages (211, 221) for tube parts are formed in each of the first spacer member and the second spacer member.

Description

technical field [0001] The invention relates to a catheter handle and a catheter whose front end can be deflected. Background technique [0002] A medical catheter is generally configured such that a handle is attached to the base end (proximal end) side of the catheter shaft. [0003] As the catheter handle, various catheter handles have been proposed depending on the type of catheter. For example, there are cases where it is desired to bend or extend the distal end portion (distal end) of the catheter by manipulating the handle for the catheter. In this way, as a mechanism for deflecting the front end portion of the catheter for operation on the hand side, the following mechanism has been introduced: the base end of the operation cable is connected to the rotating plate installed to be rotatable relative to the handle main body. The rotating plate is rotated to change (deflect) the direction of the distal end of the catheter (see Patent Document 1 below). [0004] In ad...

AI Technical Summary

Problems solved by technology

[0015] However, in the catheter handle described in Patent Document 3, there is no gap between the handle main body 331 and the rotating plate 3320 through which the tube member can pass.

Assuming that even if a gap through which the pipe member can pass is ensured between the handle main body 331 and the rotating plate 3320 , when the pipe member extending from the lumen opened on the other side of the rotating plate 3320 passes through one side of the rotating plate 3320 In the case of the above-mentioned gap between the handle body 331 and the handle body 331, it is considered that the pipe member is twisted due to the difference in height, the flow of the fluid is impaired, or the pipe member is damaged.

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