Title:
排液用トロカールカテーテル
Document Type and Number:
Japanese Patent JP3532206
Kind Code:
B2
Abstract:
A trocar catheter includes a trocar rod having a stepped diameter distal end for use with a catheter having a stepped diameter lumen wherein the trocar is inserted into the lumen of the catheter and the trocar is used to incise a patient and install the catheter after which the trocar is removed from the lumen of the catheter. The distal end of the trocar rod is provided with a stepped coaxial bore into which a piercing point rod, a spring and a safety sleeve are assembled. The piercing point rod has a proximal small diameter portion which is press fit into a correspondingly small diameter portion of the coaxial bore in the distal end of the trocar rod. The spring is carried on the small diameter portion of the piercing point rod and biases the safety sleeve in a distal direction. The distal end of the piercing point rod has a larger diameter portion tapering to a piercing tip and the safety sleeve has a stepped inner diameter which prevents it from moving beyond a predetermined distal position covering the piercing tip. The stepped coaxial bore has a large diameter portion for receiving the safety sleeve when it is pressed proximally against the spring. A protrusion on the distal outer surface of the safety sleeve prevents the catheter from accidentally slipping off the trocar.
Inventors:
コーエン，ハーバート
スカーフォン，フランク・エイ
ターケル，デビッド
スカーフォン，フランク・エイ
ターケル，デビッド
Application Number:
JP52567394A
Publication Date:
May 31, 2004
Filing Date:
May 11, 1994
Export Citation:
Assignee:
シンバイオシス・コーポレイション
International Classes:
A61B17/34; A61M25/06; A61B19/00; (IPC1-7): A61B17/34
Attorney, Agent or Firm:
青山 葆 （外１名）