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Guidable structure such as a catheter or an endoscope

A technology for manipulating structures and endoscopes, which is applied in the field of catheters or endoscope-type steerable structures, can solve the problems of inability to enter the machine, complicated inspection procedures, unsuitable for automatic control, etc., and achieve a good adjustment effect.

Active Publication Date: 2009-04-29
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION (S N E C M A) +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As a result, traditional non-destructive inspections, such as those using Foucault currents or ultrasound, have always been infeasible, even if required, if the access route is complex and if the dimensions of the passage to be traversed are too small. access to certain areas within the machine
Finally, these known devices are not suitable for automatic control, for which reason the inspection procedure is correspondingly complicated since it needs to be done manually

Method used

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  • Guidable structure such as a catheter or an endoscope
  • Guidable structure such as a catheter or an endoscope
  • Guidable structure such as a catheter or an endoscope

Examples

Experimental program
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Embodiment Construction

[0039] First refer to figure 1 , which shows a schematic diagram of a catheter or endoscopic steerable structure 10 according to the prior art, which includes a tubular flexible body 12 along a longitudinal axis 14, and includes a shrinkable material such as a shape memory alloy ( SMA) type—the actuator 16 is arranged along the tubular mechanism and its interior. The actuator is in the form of a metal wire and is connected to a power supply (not shown in the figure). The steerable structure 10 has a stationary proximal end 18 and a steerable distal end 20 .

[0040]Heating the shape-memory alloy (SMA) material through the Joule effect can cause the atoms that make up the wire to rearrange (when the activation temperature is reached), causing a contraction (response time of less than a second) that shortens its length. A wire 16 secured to the wall of the tubular structure 12 causes the distal end 20 of the tube to bend in a direction perpendicular to the axis 14 (Fig. 2). A...

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Abstract

The invention relates to a steerable structure (21, 27) of the catheter or endoscope type, the structure comprising an elastically or deformable longitudinal body (22, 28) including at least one actuator (16, 38) of material of the shape memory type incorporated longitudinally with the body (22, 28) together with Joule-effect heater means enabling the actuator (16, 38) to be contracted longitudinally in order to cause the longitudinal body (22, 28) to bend, wherein the actuator (16, 38) extends over at least one portion of the body (22, 28) that presents varying stiffness.

Description

technical field [0001] The present invention relates to a catheter or endoscopic steerable structure for internal inspection of a three-dimensional system, such as a turbine. Background technique [0002] Existing catheters or endoscopes are in the form of long tubes, either rigid or elastically deformable, one end of which is steerable relative to the longitudinal axis of the tube, allowing selection of a particular viewing angle and facilitating advancement of the catheter or endoscope . [0003] In order to bend specific regions of a catheter or endoscope accordingly, it is known to place along its structure actuators in the form of wires made of shape-memory material connected to Joule effect heating. Such actuators contract in length as the temperature increases, thereby changing the curvature of the catheter or endoscope in the region where the actuator is located. Controlling the various actuators along the length of the endoscope or catheter allows the distal end ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/01
CPCG02B23/2476A61M25/0158A61M25/0054A61B1/0055G01M13/028G01N27/904G01N29/043G01N2291/2636G01N2291/2693A61B1/0058
Inventor 赛蒂雅·博斯魁特热霍姆·祖维兹克
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION (S N E C M A)
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