초록 ▼

A catheter apparatus has an information detecting sensor which is capable of positively controlling an intended treatment effect at a selected position at which laser energy is irradiated, to treat conditions such as solidification or necrosis of tissue. The catheter apparatus comprises a rigid shea

A catheter apparatus has an information detecting sensor which is capable of positively controlling an intended treatment effect at a selected position at which laser energy is irradiated, to treat conditions such as solidification or necrosis of tissue. The catheter apparatus comprises a rigid sheath formed to be safely inserted into a body cavity. A window is provided at the front end portion of the sheath to allow a movable sensor to be moved in or out through the window. A balloon means having an inflatable balloon is provided in the sheath adjacent to the sensor. The balloon means is secured to the sheath and is biased through an opening on the opposite side of the sheath toward an adjacent wall portion of the body cavity in a direction opposite to the side of the window when the balloon is inflated. The sensor is thereby projected through the window and is brought into close contact with a correspondingly adjacent portion of the cavity wall by a reaction force of the inflated balloon.

대표청구항 ▼

A catheter apparatus having a sensor, which is insertable into a body cavity for detecting information receivable at a wall of the body cavity or transmitted therethrough, comprising: a rigid sheath which is to be inserted into said body cavity; a first window provided on a side of a front end porti

A catheter apparatus having a sensor, which is insertable into a body cavity for detecting information receivable at a wall of the body cavity or transmitted therethrough, comprising: a rigid sheath which is to be inserted into said body cavity; a first window provided on a side of a front end portion of the sheath to enable a sensor to move in or out therethrough, and a second window provided on a side opposite to said first window for a balloon to be inflated out therethrough; a sensor positioned within said first window and movable in or out therethrough in a radial direction of said sheath; and a balloon means comprising a rigid probe and a balloon mounted thereon, the balloon being inflated or deflated by adjustment of a fluid pressure provided therein, whereby said balloon means is inserted into said sheath and said balloon during use is biased to the wall of said body cavity through said second window when said balloon is inflated, said sensor being thereby positively brought into close contact with the wall of said body cavity through said first window by a reaction force exerted on said sensor by said inflated balloon.