FR2556205A1 - ENDOSCOPE PROVIDED WITH AN AUXILIARY INSTRUMENT WITH DISTAL END CAPABLE - Google Patents

Abstract

ENDOSCOPE PROVIDED WITH AN AUXILIARY INSTRUMENT WHOSE DISTAL END IS TILTING. THE OBJECT OF THE INVENTION IS TO REDUCE THE DIAMETER OF THE ENDOSCOPE CHANNEL 8 THROUGH WHICH THE AUXILIARY INSTRUMENT (CLAMP, BUNDLE OF GLASS FIBERS, PROBE, CANNULA) MUST BE PASSED. THIS INSTRUMENT HAS AN OBLIQUE 2 DISTAL PART AND IT IS FLEXIBLE AND ELASTIC AT LEAST AT THE LOCATION OF THE CONNECTION ELBOW OF THIS OBLIQUE PART WITH THE CENTRAL PART 4, SO THAT IT CAN BE INSERTED IN A NARROW CHANNEL 8 BY BEING PUT IN EXTENSION, AND THAT PART 2, WHICH TENDERS TO RETURN BY ELASTICITY TO ITS OBLIQUE ORIENTATION, CAN TAKE ANY INTERMEDIATE ORIENTATION BY PRESSING A STOP AND ADJUSTING THE SLIDING OF THE INSTRUMENT.

Description

1.

  The invention relates to an endoscope provided with an

  auxiliary instrument, such as a bundle of glass fibers,

  does not clip, a probe or an injection cannula

  vary the orientation of the distal end.

  It is known to pass an instrument

  in the stem or in a stem channel of an endosco-

  eg the orientation of the distal end of this instrument which can be modified, by means of a system comprising a

  proximal handle which controls an actuating member

  tal via pulling threads or the like.

  The existence of this distal actuator, the son of

  traction and their guide tubes, which must be done

  in the canal of the stem of the endoscope, has the effect of

  significantly increase the diameter of the endoscope shaft, which may in some cases result in considerable discomfort for the patient being treated, particularly when

  to introduce the endoscope into some narrow channels.

  With auxiliary instruments of the kind considered

  d, corresponding to the state of the art, it is not

  It is not possible to bring the distal end of the instrument

  xilarity opposite the laterally

  port to the deflection plane of the endoscope, without having to rotate along its longitudinal axis the endoscope driven into the body cavity of the patient, and this contingency may in certain cases impose on the operator a working position

very inconvenient.

  The object of the invention is to provide an endoscope

  of the kind defined above, whose stem may have a di-

  meter as small as possible, but which allows however to control at will and in a simple way the variable position of the end of the auxiliary instrument opposite to

  the operator; in order to reach all the places

  killed in the field of view of the optical system, without having

  however, to vary the position of the endoscope.

  According to the invention, these results are obtained by

  the fact that the auxiliary instrument, at the place of its ex-

  tremite opposite to the operator, has a bent limb which protrudes out of the channel of the rod of the endoscope, this

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  auxiliary instrument being flexible at least at the location of the corresponding elbow and that the orientation of said oblique portion can be controlled by axial displacement of the instrument

  compared to the stop, taking advantage of this flexibility.

  Preferably, a first stop is formed by the end of the channel opposite the operator, and another stop is constituted by the inner face of the channel opposite to the operator.

  the first stop. The flexible elbow of the auxiliary instrument

  area may be brought in whole or in part with regard to

  this second stop. In addition, you can rotate the

  auxiliary trunk along its longitudinal axis, in the

  of the endoscope intended for the passage of this instrument, so as to maneuver the variable obliquity portion situated at the end of the auxiliary instrument, to reach any point situated in the field of view of the optical system of the endoscope. Preferably, this optical system

  can also be maneuvered in the same way,

  longitudinally sliding.

  Thanks to the solution of the invention, it is possible to introduce

  using the auxiliary instrument in an instrument channel of appropriate diameter, or in another channel of the endoscope, where the oblique portion at the end of the auxiliary instrument is placed in the extended position flat, in order to tend to resume by itself by elasticity its original bent position, when it has crossed the distal end of the canal of the endoscope; following the depression more or less

  accented by the auxiliary instrument, the oblique part of this

  it can then take various oblique positions to

  shooting from its extended position flat.

  To bring the end of the instrument

  xile opposite the operator next to a chosen location

  of the patient's body cavity, simply slide

  use the instrument to push it deeper or deeper, and if necessary rotate the instrument around its longitudinal axis, to vary the position of the oblique part of the instrument on demand. Indeed, this part is

  rests on the distal end of the endosal canal.

  cope, and his elbow is resting on the upper part

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  3. Opposite opposite of the internal face of the channel of the endoscope, which makes it possible to vary the obliquity of the bent limb, to

  from its extended position flat to its obliqui-

  maximum, to obtain virtually any mandatory orientation

  only from this branch, I will. To control the position variations of

  the auxiliary instrument, one can operate by hand, or by

  intermediate of an actuator mounted on the endoscope,

  on the operator's side, and acting on the instrument

  an area whose position can thus be varied in a manner

  re very regular, over its entire range of travel.

  We will now describe as an example a mode

  embodiment of the invention, with reference to the drawings

  in which: - Figure 1 is a side view of an auxiliary instrument consisting of a clamp;

  - Figure 2 is an axial section on an enlarged scale

  distal end of a utero-renal endoscope,

  the maximum part of the auxiliary instrument.

  In the embodiment of the invention,

  As an example, the auxiliary instrument is constituted by a clamp, but this auxiliary instrument can also be constituted by a fiberglass bundle, or another

  instrument such as a probe or injection cannula.

  The clamp shown in the Figures comprises a spout 1 carried by an oblique part 2, which is connected by a

  elbow 3 at the long end 4 of the clamp. In a way that

  naked, one can actuate the beak 1 of the clamp by means of the

handle 5.

  According to the invention, at least the elbow 3 is flexible, or the assembly consisting of the parts 2, 3 and 4, is flexible, being made for example by a flexible coil formed of contiguous turns of a wire d spring steel. It is also possible to make the parts

  2 and 4 rigidly, providing for flexibility only

at the elbow 3.

  Thanks to this solution, it is possible to reduce

  re the obliquity of the part 2 carrying the beak 1 of the clamp,

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  4. to bring it in axial extension in the extension of the long part 4 of the clamp, part 2 then returning from itself

  always / by elasticity at its previous oblique position,

shown in Figure 1.

  This structure makes it possible to introduce the end of the clamp in a situation of complete extension through a channel 8 of the rod 6 of an endoscope. In the case considered by way of example in FIG. 2, this endoscope comprises a

  second channel 7, for a pivoting and sliding optical probe

health.

  As soon as the part 2 has crossed the end of the channel 8 opposite to the operator, it tends to automatically resume its initial oblique position shown in FIGS. 1 and 2. If the operator depresses the auxiliary instrument

  more or less deeply in the axial direction, the elbow

  xible 3 comes out more or less completely beyond the

  consequently, the channel 8, and the oblique part 2 forms / a more or less accentuated angle, up to its initial obliquity. In other words, the operator can thus introduce and place the spout 1 of the clamp in any desired position in a cavity of the body of a patient, by playing on the obliquity of the bent branch of the

  part 2, and on the pivoting position thereof.

  Thanks to the invention, it is possible to introduce suitable and flexible auxiliary instruments into the

  channel, intended for the passage of an instrument, a stem of

  endoscope, to position in all directions the former

  distal end of these instruments, as we have just

  expose with reference to Figures 1 and 2.

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Claims (4)

CLAIMS.   1. Endoscope with optics and instrumentation   auxiliary device such as a bundle of glass fibers, a clamp, a probe, or an injection cannula; this instrument passing in a channel of the endoscope, and having a distal portion whose orientation can be varied; characterized   in that the auxiliary instrument, at the location of its   distal side, has an oblique part (2) which   away from the channel, this auxiliary instrument being flexible   at least at the corresponding elbow (3) and that-   the orientation of said oblique portion (2) can be controlled by axial displacement of the auxiliary instrument relative to   to a stop, taking advantage of this flexibility.   2. Endoscope according to claim 1, characterized   in that a first stop is constituted by the end   mite of the channel (8) opposite the operator, and another-stop   consists of the inner face of the canal opposite the first first stop.   Endoscope according to one of the claims   1 or 2, characterized in that the auxiliary instrument is pivotable about its longitudinal axis, inside said channel.   Endoscope according to one of Claims 1 to 3,   characterized in that the endoscope optics can also   if sliding along its longitudinal axis   nal and pivot around it. 8360 FR