JP2007167542A - Scope of endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scope of endoscope allowing the distal end of a scope body to smoothly advancing in the intestines at a fixed speed, giving no discomfort and uneasiness to a subject by eliminating the excessive oppression to the intestine inner wall, facilitating the operation of an examiner, requiring no high technique and having superior operability and safety. <P>SOLUTION: The distal end of a scope body 1 having an operating body 2 at its proximal end is provided with a scope advancing mechanism 3 advancing the scope body 1. The scope advancing mechanism 3 is constituted by providing front/rear-side stoppers 4 and 5 and a magnetic annulus body therebetween in a line, and comprises a stator 6 operable from the operating body 2, a slider 7 slidably fitted around the outer circumference of the stator 6, and a locking body 8 having a diameter-contracting body and provided around the outer circumference of the slider 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an endoscope that is inserted into a small intestine, a large intestine or the like and used for inspection / treatment inside the intestine.

Endoscopes that have been used for decades have a scope body formed at the bendable portion at the distal end and a flexible portion at the middle, and a bent portion of the bendable portion provided at the base end of the scope body. It is composed of an operation body having a function, an air / water supply function, a forceps port, and the like. Endoscopes are inserted into the anus of the subject by the examiner, manually sent out while looking inside the intestine with a monitor, moved forward, pulled out and moved backward to position the tip side at the examination site.・ It treats.
JP 2005-12999 A

  In the conventional endoscope scope described above, the inspector operates the operating body according to the bending state of the intestinal inner wall of the small intestine or the large intestine to bend the bendable portion at the distal end, and push out or pull out the scope body. It is intended to move forward and backward. For this reason, depending on the amount of force applied, the mucous membrane of the intestinal lining may be compressed, causing problems such as discomfort and anxiety to the subject, and in situations where the force is too strong and damages the mucous membrane. Become. For this reason, there is a problem that operation of the endoscope scope requires appropriate training, and a high skill is always required even if experienced.

  The present invention has been made in view of the problems of the endoscope scope of the prior art, and the distal end side of the scope body can smoothly advance in the intestine at a constant speed and does not excessively press the intestinal inner wall. There is no discomfort or anxiety to the examiner, and the inspector who operates it only needs to send out or pull out the scope body while looking at the monitor. An object of the present invention is to provide an endoscope scope that is superior in safety and operability because it does not require a high degree of skill.

  The means of the present invention configured to solve the above-described problem is an endoscope comprising a scope main body and an operating body provided at the proximal end of the scope main body for performing various operations including imaging and forceps operations. In the mirror scope, a scope advance mechanism for advancing the scope body at a predetermined speed by controlling from the operating body is provided on the distal end side of the scope body.

  The scope advance mechanism includes a front stopper provided on the outer periphery of the scope main body, a rear stopper provided on the outer periphery of the scope main body so as to be axially spaced from the front stopper, the rear stopper, and the front stopper. It is composed of a plurality of magnetic rings arranged in the axial direction by being fitted to the scope body, and adjacent magnetic rings have different polarities, and the polarities are alternately controlled by the control from the operation unit. A stator that is configured to be switched to, a slider that is slidably fitted in the stator in the axial direction, and an outer periphery of the slider. And an umbrella-shaped locking body whose outer peripheral edge abuts against the intestinal inner wall, and locking body diameter-reducing means for reducing the diameter of the locking body to advance.

  And the said locking body diameter-reducing means is good to comprise in the magnetized body which consists of the fixed magnet provided in the said back side stopper, and the movable magnet which is provided in the said locking body and magnetically adheres to this fixed magnet.

  Moreover, the said locking body diameter-reducing means is good to comprise with the action body which is provided in the said locking body and contracts the diameter of this locking body by contact | abutting to the said rear side stopper.

  Further, the locking body may be provided with locking body diameter increasing means for expanding the diameter of the locking body by contacting the front stopper.

Since the present invention is configured as described in detail above, the following effects can be obtained.
(1) A scope advance mechanism is provided on the distal end side of the scope body so that the scope body can be advanced by hand operation without being pushed by the examiner. It can solve situations such as giving anxiety and anxiety, and hurting.
(2) The examiner need only pay attention to the position of the scope body while watching the monitor, and only pull out and pull the scope body. Therefore, it is possible to conduct examinations and treatments of better quality than the prior art.
(3) For the same reason as 2 above, it is possible to perform a safe examination and treatment even if it does not have a high level of skill unlike the prior art.
(4) Since the locking body has a structure in which the diameter is reduced directly or indirectly by magnetic force, and the diameter is increased by the elasticity of the material, the mechanism is simple, there is no risk of failure, and the operation is easy. Can be used with confidence.
(5) Since the locking body is provided with the locking body diameter increasing means that operates by contacting the front stopper, the locking body can be reliably expanded in diameter.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 8 show a first embodiment. In the figure, reference numeral 1 denotes a scope main body that constitutes an endoscope scope. The scope main body 1 is composed of a hollow tube formed of soft rubber or the like, and has a CCD, and has a distal end portion 1A having an illumination window and the like. The distal end side is a bendable portion 1B that can be bent by an operation from an operation body 2 described later.

  Reference numeral 2 denotes an operating body connected to the base end 1C of the scope body 1, and the operating body 2 is an up / down and left / right angle knobs 2B, 2C, an air / water feed button 2D for bending the bendable portion 1A on the body 2A, A suction button 2E, a forceps port 2F, and the like are provided. An optical fiber, a bending operation wire, and the like (not shown) connected to the operating body 2 are inserted into the scope body 1 over the distal end portion 1A via the bendable portion 1B. Since the basic configurations of the scope body 1 and the operation body 2 are not different from the known ones, a detailed description is omitted.

  Reference numeral 3 denotes a scope advance mechanism provided on the distal end side of the scope body 1. Reference numeral 4 denotes the scope advance mechanism 3, and is a synthetic resin-made front stopper located in the vicinity of the bendable portion 1B in an annular shape on the outer periphery of the scope main body 1. The front stopper 4 does not irritate the mucous membrane. The outer surface is formed in a convex curve shape. Reference numeral 5 denotes a synthetic resin rear stopper provided on the outer periphery of the scope main body 1 so as to be spaced apart from the front stopper 4 in the axial direction. The rear stopper 5 includes an annular base 5A inserted and fixed to the scope main body 1 and the annular base 5A. It is comprised from the base 5A and the receiving part 5B which spreads in an umbrella shape toward back.

  Reference numeral 6 denotes a stator provided on the outer periphery of the scope body 1 between the front stopper 4 and the rear stopper 5. The stator 6 is formed by arranging a plurality of magnetic ring bodies 6A, 6B,... 6N each having a coil wound around an annular core in the axial direction and covering the outer surface with a protective film made of a thin resin film. The adjacent magnetic ring bodies 6A, 6B,... 6N have different polarities of anode or cathode, and operate a forward operation button (not shown) provided on the operation body 2 to control the current. By changing the direction, the polarities of the magnetic rings 6A, 6B,... 6N are alternately switched.

  Reference numeral 7 denotes a slider fitted to the outer periphery of the stator 6 so as to be slidable in the axial direction. The slider 7 is formed by coating a cylindrical body made of magnetic metal with a thin resin film, and one side in the axial direction is magnetized as an anode and the other side is magnetized as a cathode. Then, by operating the operating body 2 as described above and changing the direction of the current supplied to the stator 6 to alternately switch the polarities of the magnetic ring bodies 6A, 6B,. The scope main body 1 moves forward by advancing in the distal direction with respect to the scope main body 1 by the attachment force and the repulsive force, and the slider 7 is stopped in the intestine.

  Next, 8 indicates an umbrella-like locking body provided on the outer periphery of the slider 7. The locking body 8 is for holding the slider 7 in a stopped state by the outer peripheral edge 8A coming into contact with the inner wall of the intestine when the diameter is expanded. When the slider 7 stays at a fixed position, the stator 6 advances, that is, the scope. The main body 1 can be moved forward. Therefore, the locking body 8 is made of a soft synthetic resin material to have an elastic restoring force, and a plurality of streaks 8B, 8B,... .

  Further, 9 indicates a magnetic body as a locking body diameter reducing means, and the magnetic body 9 is for reducing the diameter of the locking body 8 during the forward movement of the scope body 1. The magnetized body 9 includes a stationary magnet 10 composed of anode magnets 10 </ b> A and cathode magnets 10 </ b> B alternately provided on the outer surface side of the receiving portion 5 </ b> B of the rear stopper 5, and a circumferential surface on the inner surface side of the locking body 8. The movable magnet 11 is composed of cathode magnets 11 </ b> A and anode magnets 11 </ b> B provided alternately, and the magnetic force thereof is set to be weaker than the magnetic force acting between the stator 6 and the slider 7.

The present embodiment has the above-described configuration, and the operation thereof will be described next. In FIG. 2, the locking body 8 is located on the front stopper 4 side, and is expanded in diameter and the outer peripheral edge 8 </ b> A is in contact with the intestinal inner wall. When the polarity of the magnetic rings 6A, 6B,... 6N constituting the stator 6 in this state is changed by sequentially changing the direction of the current by operating the forward operation button, it is held in a stopped state by the intestinal inner wall. The stator 6, that is, the scope main body 1 moves forward by thrust generated from the adsorption and repulsion of the magnetic force with the slider 7, and the rear stopper 5 comes into contact with the locking body 8, whereby the forward movement of the scope main body 1 is temporarily stopped. .

When approaching the rear stopper 5 so that the locking body 8 is covered, the locking body 8 is magnetically attached to the receiving portion 5B side by the action of the magnetic body 9 in which the movable magnet 11 is attracted by the magnetic force of the fixed magnet 10. The locking body 8 is reduced in diameter in the direction indicated by the arrow (see FIG. 8) and separated from the intestinal inner wall, so that the slider 7 can be advanced. Since a magnetic attractive force and a repulsive force act between the stator 6 and the slider 7, the slider with the locking body 8 released is slid and displaced in the direction of the front stopper 4 by the magnetic force.

  Then, the locking body 8 gradually increases in diameter by the elastic restoring force of the material while moving forward, and is restored to a size that engages with the intestinal inner wall when reaching the front stopper 4 (see FIG. 2). In this way, the scope main body 1 and the locking body 8 can be advanced to a desired position by so-called movement of a scale insect by repeating the forward and stop operations alternately.

Thus, since the scope main body 1 is configured to move forward by the magnetic force, the configuration is simple, no failure occurs, the operation is easy, and there is no trouble during cleaning. In addition, when the slider 7 moves forward and the locking body 8 moves away from the receiving portion 5B, the locking body 8 is automatically restored and expanded in diameter by the elasticity of the material, so that neither complicated configuration nor control is required. .

Next, FIGS. 9 and 10 show a second embodiment. In the present embodiment and other embodiments described later, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the figure, reference numeral 21 denotes a scope advance mechanism. Reference numeral 22 denotes the scope advance mechanism 21, which is a rear stopper that is spaced from the front stopper 4 and is fitted to the scope body 1. Rear side stopper 22 is composed of an annular base portion 22A of the front becomes contact surface 22A _1, and the receiving portion 22B extending in an umbrella shape toward the rear from the annular base portion 22A, integrally molded of a synthetic resin material It is.

Reference numeral 23 denotes a slider fitted to the stator 6 so as to be slidable in the axial direction. The slider 23 is formed by coating a cylindrical body made of a magnetic metal with a thin resin film in the same manner as in the first embodiment. One side in the axial direction is magnetized on the anode and the other side is magnetized on the cathode.

Reference numeral 24 denotes a synthetic resin locking body integrally provided on the rear side of the slider 23. The locking body 24 includes a disc-shaped base portion 24A slidably fitted to the stator 6, an umbrella-shaped locking portion 24B provided on the outer periphery of the base portion 24A, and a radial shape radially to the locking portion 24B. Are formed so as to be displaceable in the axial direction and expandable / contractable in the radial direction so that the outer peripheral edge 24D abuts against the intestinal inner wall during diameter expansion. It has become.

  Reference numerals 25, 25,... Denote four diameter-reducing actuating bodies as diameter-reducing means provided on the locking body 24 in the cross direction. Each diameter-reducing actuating body 25 is composed of an actuating piece 25A and an interlocking piece 25B formed of a hard synthetic resin and bent into a substantially "<" shape, and the actuating piece 25A is embedded in the base 24A of the locking body 24, The interlocking piece 25B extends rearward in a state of being embedded in the locking portion 24B.

According to the present embodiment, when the scope body 1 moves forward and the locking body 24 approaches the rear stopper 22, the operating piece 25 </ b> A of the reduced diameter operating body 25 contacts the contact surface 22 </ b> A ₁ of the rear stopper 22. By pushing forward, the interlocking piece 25B is displaced downward, the locking portion 24B is displaced in the direction indicated by the arrow, and the locking body 24 is reduced in diameter. Further, when the slider 23 moves forward by operating the operating body 2 to change the direction of the current of the stator 6, the actuated piece 25 </ b> A that has been pushed is released, and the locking portion 24 </ b> B gradually returns due to the elasticity of the material. Accordingly, the locking body 24 is expanded in diameter.

  And according to this Embodiment, since the diameter reduction operation body 25 is provided in the state embed | buried under the latching body 24, the safety | security in an intestine is obtained, and the safety | security in hygiene, handling Excellent in properties.

  Further, FIG. 11 to FIG. 13 show a third embodiment. In the figure, reference numeral 31 denotes a scope advance mechanism. Reference numeral 32 denotes a slider constituting the scope advance mechanism 31, and the slider 32 is formed of an annular magnet body in which one side in the axial direction is an anode and the other side is a cathode, like the slider 7 of the first embodiment. Yes.

Reference numeral 33 denotes an engaging body fixedly provided in front of the slider 32. The engaging body 33 includes an annular base portion 33A made of a synthetic resin material slidably fitted to the scope body 1, and the annular base portion 33A. An opening 33B formed in four directions on the outer edge side, a locking portion 33C that expands in an umbrella shape from the outer edge side of the annular base portion 33A toward the rear, and a plurality of grooves 33D that are radially formed in the locking portion 33C. It is composed of

  Reference numerals 34, 34,... Show four diameter-expansion actuating bodies as diameter-expanding means provided on the locking body 33 in the cross direction when viewed from the front. Each of the diameter-expanding operating bodies 34 is formed by bending the operating piece 34A and the interlocking piece 34B into a substantially "<" shape with a hard synthetic resin, and the operating piece 34A protrudes from the opening 33B to the front of the annular base 33A, The interlocking piece 34B is embedded in the locking portion 33C. The operating piece 34A is covered integrally with the engaging portion 33C with a soft synthetic resin film 35, thereby preventing contamination of the instrument and preventing damage to the intestinal wall.

  According to the present embodiment, when the slider 32 moves forward, the operating piece 34A of the diameter-expanding operating body 34 comes into contact with the front stopper 4 and is pushed downward. As a result, the interlocking piece 34B rises radially outward, and the locking body 33 When the diameter of the slider 32 increases in the direction indicated by the arrow and contacts the intestinal inner wall, the slider 32 is stopped. Thereby, the slider 32 stops reliably and the scope main body 1 can move forward together with the stator 6 by magnetic force.

  Thus, according to the present embodiment, the diameter of the locking body 33 is not expanded by the elasticity of the synthetic resin material, but is expanded by the movement of the diameter expansion operating body 34 that contacts the front stopper 4. The locking body 33 can be reliably expanded in diameter.

1 to 8 relate to a first embodiment of the present invention, and FIG. 1 is an external view of an endoscope scope. It is an external view which shows the structure of the front end side of an endoscope scope. It is a partial external view of the distal end side of the endoscope scope showing a state in which the scope body moves forward. It is an enlarged vertical sectional view showing a scope advance mechanism. It is a VV arrow direction expanded sectional view in FIG. It is a VI-VI arrow direction enlarged sectional view in FIG. It is a VII-VII arrow direction enlarged sectional view in FIG. It is an expanded longitudinal cross-sectional view which shows the state which the latching body diameter-reduced. 9 and 10 relate to the second embodiment, and FIG. 9 is an enlarged longitudinal sectional view showing a scope advancement mechanism. It is an expanded longitudinal cross-sectional view which shows the state which the latching body diameter-reduced. 11 to 13 relate to the third embodiment, and FIG. 11 is an enlarged longitudinal sectional view showing a scope advancement mechanism. It is XII-XII arrow direction sectional drawing in FIG. It is explanatory drawing which shows the state which the latching body expanded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Scope main body 1B Bendable part 1C Base end 2 Operation body 3, 21, 31 Scope advance mechanism 4 Front side stopper 5, 22 Rear side stopper 6 Stator 6A, 6N Magnetic ring body 7, 23, 32 Slider 7A Anode 7B Cathode 8, 24, 33 Locking body 8A Outer peripheral edge 9 Magnetized body 10 Fixed magnet 11 Movable magnet 25 Reduced diameter operating body 34 Expanded diameter operating body

Claims (5)

  In an endoscope scope that includes a scope body and an operation body that is provided at a proximal end of the scope body and performs various operations including imaging and forceps operation, the operation body is disposed at a distal end side of the scope body. An endoscope scope characterized in that a scope advance mechanism for advancing the scope main body at a predetermined speed by being controlled from is provided.   The scope advance mechanism is located between the front stopper provided on the outer periphery of the scope main body, the rear stopper provided on the outer periphery of the scope main body so as to be axially spaced from the front stopper, and between the rear stopper and the front stopper. Then, it is composed of a plurality of magnetic rings arranged in the axial direction by being fitted to the scope body, adjacent magnetic rings have different polarities, and the polarities are alternately switched by the control from the operating body. A stator and an annular magnet body magnetized with different polarities on one side and the other side in the axial direction, a slider fitted to the stator so as to be displaceable in the axial direction, and provided on the outer periphery of the slider so as to be able to expand and contract. 2. The inner portion according to claim 1, comprising an umbrella-shaped locking body whose outer peripheral edge abuts against the intestinal inner wall when expanding the diameter, and locking body diameter-reducing means for reducing the diameter of the locking body for advancement. Mirror scope.   The locking body diameter-reducing means is a magnetized body comprising a fixed magnet provided on the rear stopper and a movable magnet provided on the locking body and magnetically attached to the fixed magnet. The endoscope scope according to claim 2.   The endoscope scope according to claim 2, wherein the locking body diameter reducing means is a diameter-reducing operation body that is provided on the locking body and contracts the diameter of the locking body by coming into contact with the rear stopper.   The endoscope scope according to claim 2, wherein the locking body is provided with locking body diameter increasing means for expanding the diameter of the locking body by abutting against the front stopper.

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