JP2017018288A - Baloon removal jig for ultrasonic endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a baloon removal jig for an ultrasonic endoscope capable of removing a baloon easily without damaging the ultrasonic endoscope.SOLUTION: The baloon removal jig for an ultrasonic endoscope removes a baloon 3 mounted on an ultrasonic endoscope 2 from the ultrasonic endoscope 2 and includes: a body 11 having a length in a longitudinal direction larger than a diameter of a band 31 positioned at an end of the baloon 3 mounted on the ultrasonic endoscope 2; two arms 12 extending from both ends of the body 11 in a direction orthogonal to the longitudinal direction respectively; a sharp part 13 projected so as to advance/retreat along the longitudinal direction of the body 11 from at least one of facing side faces of the two arms 12 and having a shape whose tip is sharp; and an accommodation mechanism arranged on a side face of the arm 12 on an opposite side to the projection side of the sharp part 13 and accommodating the sharp part 13 so as to advance/retreat.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a balloon removal jig for an ultrasonic endoscope.

  Conventionally, in an ultrasonic endoscope having an ultrasonic transducer at the tip, deaerated water is injected into a balloon arranged so as to cover the outer periphery of the ultrasonic transducer, and is brought into close contact with an observation site such as a digestive tract. An observation method is known (see, for example, Patent Document 1).

  In an ultrasonic endoscope that uses such a balloon for observation, it is necessary to remove the balloon from the ultrasonic endoscope after observation.

JP 2006-204642 A

  In the conventional ultrasonic endoscope, since the balloon is in close contact with the ultrasonic endoscope, it may be difficult for the user to remove the balloon after observation. In particular, the balloon band located at the end of the balloon is difficult to remove because it is fitted in the balloon groove.

  When it is difficult to remove the balloon as described above, the user may try to remove the balloon using a fingertip or tweezers. When removing a balloon using a fingertip or tweezers, there is a risk of damaging the ultrasonic endoscope.

  The present invention has been made in view of the above, and an object of the present invention is to provide a balloon removal jig for an ultrasonic endoscope that can easily remove the balloon without damaging the ultrasonic endoscope. And

  In order to solve the above-described problems and achieve the object, a balloon removal jig for an ultrasonic endoscope according to one aspect of the present invention includes a balloon attached to an ultrasonic endoscope, and the ultrasonic endoscope An ultrasonic endoscope balloon removing jig to be removed from a main body having a longitudinal length larger than a diameter of a band portion located at an end of the balloon mounted on the ultrasonic endoscope; , Two arm portions respectively extending in the direction perpendicular to the longitudinal direction from both ends of the longitudinal direction of the main body portion, and at least one of the opposing side surfaces of the two arm portions in the longitudinal direction of the main body portion. A sharp portion that protrudes forward and backward along the tip and has a sharp tip and a side surface of the arm portion that is opposite to the side from which the sharp portion protrudes, and accommodates the sharp portion so as to freely advance and retract. A storage mechanism And wherein the Rukoto.

  Moreover, in the balloon detaching jig for an ultrasonic endoscope according to one aspect of the present invention, the accommodation mechanism includes an accommodation portion that accommodates the sharp portion so as to advance and retreat, and a direction in which the sharp portion projects the sharp portion. An elastic portion that is biased in the opposite direction to the sharp portion, and an external force applied in a direction opposite to the elastic force of the elastic portion is input, and the tip of the sharp portion that is accommodated in the accommodating portion is It is comprised by the external force input part made to protrude from the said side surface which mutually opposes one arm part, It is characterized by the above-mentioned.

  In the ultrasonic endoscope balloon detaching jig according to one aspect of the present invention, the distal end of the sharp portion is along a direction orthogonal to the longitudinal direction of the main body portion and the direction in which the arm portion extends. A blade edge is formed, and the blade edge of the sharp portion protrudes from the side surfaces of the two arm portions facing each other.

  Moreover, the balloon removal jig for ultrasonic endoscopes according to one aspect of the present invention is characterized by comprising positioning means for positioning the blade edge of the sharp part and the band part of the balloon.

  Further, in the balloon removal jig for an ultrasonic endoscope according to one aspect of the present invention, the positioning means is in contact with a predetermined surface of the ultrasonic endoscope so that the cutting edge of the sharp part and the balloon A contact surface for positioning with the band portion is included.

  In addition, a balloon removal jig for an ultrasonic endoscope according to an aspect of the present invention is fixed to the housing mechanism and protrudes from the side surfaces of the two arm portions at the tip of the sharp portion that face each other. A stopper is provided that regulates the protruding length, which is the maximum length.

  Moreover, the balloon removal jig for ultrasonic endoscopes according to one aspect of the present invention is characterized in that the protruding length regulated by the stopper is variable.

  In the ultrasonic endoscope balloon removing jig according to one aspect of the present invention, the elastic portion is a coiled spring.

  Further, in the balloon removal jig for an ultrasonic endoscope according to one aspect of the present invention, a balloon groove into which the band portion is fitted is formed in the ultrasonic endoscope. The tip is formed with a cutting edge along a direction perpendicular to the longitudinal direction of the main body and the direction in which the arm extends, and perpendicular to the longitudinal direction of the main body and the direction in which the arm extends. The width of the cutting edge of the sharp portion in the direction is narrower than the width of the balloon groove formed in the ultrasonic endoscope.

  Further, in the balloon removal jig for an ultrasonic endoscope according to one aspect of the present invention, a balloon groove into which the band portion is fitted is formed in the ultrasonic endoscope. A width of the arm portion in a direction orthogonal to the longitudinal direction and a direction in which the arm portion extends is narrower than a width of the balloon groove formed in the ultrasonic endoscope.

  ADVANTAGE OF THE INVENTION According to this invention, the balloon removal jig | tool for ultrasonic endoscopes which can remove a balloon easily, without damaging an ultrasonic endoscope is realizable.

FIG. 1 is a schematic view of an ultrasonic endoscope balloon detaching jig according to Embodiment 1 of the present invention as viewed from the distal end side of the ultrasonic endoscope. FIG. 2 is a schematic cross-sectional view corresponding to the line AA in FIG. FIG. 3 is a schematic cross-sectional view corresponding to the line CC in FIG. FIG. 4 is a schematic partial cross-sectional view corresponding to the line DD in FIG. FIG. 5 is a schematic partial cross-sectional view showing a state in which the tip of the sharp part of FIG. 4 protrudes from the side surfaces of the arm part facing each other. FIG. 6 is a schematic diagram illustrating a modified example of the accommodating portion of the first embodiment. FIG. 7 is a schematic cross-sectional view corresponding to the line CC of FIG. 1 of the balloon removal jig for an ultrasonic endoscope according to the second embodiment of the present invention. FIG. 8 is a schematic view of the ultrasonic endoscope balloon detaching jig according to the second embodiment of the present invention as seen from the direction corresponding to the side of FIG.

  Embodiments of a balloon removal jig for an ultrasonic endoscope according to the present invention will be described below with reference to the drawings. Note that the present invention is not limited to these embodiments. The present invention can be generally applied to a balloon removing jig for an ultrasonic endoscope.

  In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals as appropriate. It should be noted that the drawings are schematic, and the relationship between the dimensions of each element, the ratio of each element, and the like may differ from the actual situation. Even between the drawings, there are cases in which portions having different dimensional relationships and ratios are included.

(Embodiment 1)
FIG. 1 is a schematic view of an ultrasonic endoscope balloon detaching jig according to Embodiment 1 of the present invention as viewed from the distal end side of the ultrasonic endoscope. FIG. 2 is a schematic cross-sectional view corresponding to the line AA in FIG. FIG. 3 is a schematic cross-sectional view corresponding to the line CC in FIG. FIG. 4 is a schematic partial cross-sectional view corresponding to the line DD in FIG. However, in FIG. 1, regarding the ultrasonic endoscope 2, a cross section corresponding to the line BB in FIG. 2 is shown. Moreover, in FIG. 2, the outline at the time of seeing the balloon removal jig | tool 1 from the side of FIG. 1 was described with the broken line.

  The balloon detachment jig 1 cuts a band portion 31 that is a balloon band located at the end of the balloon 3 that is mounted so as to cover the outer periphery of the distal end portion of the ultrasonic endoscope 2, and from the ultrasonic endoscope 2. 2 is a balloon removal jig for an ultrasonic endoscope for removing a balloon 3.

  The balloon removing jig 1 includes a main body part 11, an arm part 12, a sharp part 13, a storage part 14, an external force input part 15, a stopper 16, and an elastic part 17. 1 and 3 show a state in which a distal end 13a of a sharp part 13 to be described later protrudes from the accommodating part 14, and FIG. 4 shows a state in which a sharp part 13 to be described later is accommodated in the accommodating part 14.

  The main body 11 is a portion that is held by the user during use and supports the arm 12. The main body portion 11 has a length in the longitudinal direction (left and right direction in FIG. 1) larger than the diameter of the band portion 31 of the balloon 3 attached to the ultrasonic endoscope 2.

  The arm portion 12 is composed of two arm portions 12 respectively extending from both ends in the longitudinal direction of the main body portion 11 in a direction perpendicular to the longitudinal direction (up and down direction in the drawing of FIG. 1). The endoscope 2 is sandwiched. The distance between the two arm portions 12 is larger than the diameter of the band portion 31 of the balloon 3 attached to the ultrasonic endoscope 2. In addition, the structure which can change the space | interval of the two arm parts 12 may be sufficient. Further, the width Wa (see FIG. 3) of the arm portion 12 in the direction orthogonal to the longitudinal direction of the main body portion 11 and the direction in which the arm portion 12 extends is formed in the ultrasonic endoscope 2 and the band portion 31 of the balloon 3 is It is narrower than the width Wg (see FIG. 2) of the balloon groove 21 to be fitted.

  The sharp portion 13 protrudes from the wall surface 12a which is a side surface of the two arm portions 12 facing each other so as to advance and retreat along the longitudinal direction of the main body portion 11. The tip 13a of the sharp part 13 has a sharp shape, and a cutting edge is formed along a direction perpendicular to the longitudinal direction of the main body part 11 and the direction in which the arm part 12 extends. Further, the width Ws (see FIG. 3) of the cutting edge of the sharp portion 13 in the direction perpendicular to the longitudinal direction of the main body portion 11 and the direction in which the arm portion 12 extends is substantially the same as the width Wa of the arm portion 12, and The balloon groove 21 formed in the endoscope 2 is narrower than the width Wg (see FIG. 2). However, the width Wa of the arm part 12 and the width Ws of the cutting edge of the sharp part 13 may be different.

  The accommodating portion 14, the external force input portion 15, and the elastic portion 17 constitute an accommodating mechanism. The accommodation mechanism is provided on the side surface opposite to the wall surface 12a of each arm portion 12 of the two arm portions 12, and accommodates the sharp portion 13 so as to freely advance and retract.

  However, the sharp part 13 and the accommodation mechanism may be provided in any one of the arm parts 12, and in this case, the other arm part 12 may have a configuration in which only the arm part 12 extends.

  The accommodating part 14 is arrange | positioned at each of the two arm parts 12, and accommodates the sharp part 13 so that advancement / retraction is possible along the longitudinal direction of the main-body part 11. As shown in FIG. As shown in FIGS. 3 and 4, the accommodating portion 14 has a quadrangular prism shape. However, as long as an accommodation mechanism can be configured, the accommodation portion 14 may have a shape other than a quadrangular prism.

  The elastic part 17 urges the external force input part 15 in a direction opposite to the direction in which the sharp part 13 protrudes. The elastic part 17 is a coiled spring made of, for example, metal.

  The external force input part 15 is configured integrally with the sharp part 13, is input with an external force applied in the opposite direction to the elastic force of the elastic part 17, and the tip 13 a of the sharp part 13 accommodated in the accommodating part 14 is used as the wall surface of the arm part 12. Project from 12a. In the first embodiment, the sharp portion 13 and the external force input portion 15 are integrally formed. However, if the sharp portion 13 and the external force input portion 15 are connected, they are configured separately. May be.

  The stopper 16 is, for example, a pin that is inserted and fixed in a hole of the housing portion 14. FIG. 5 is a schematic partial cross-sectional view showing a state in which the tip of the sharp part of FIG. 4 protrudes from the side surfaces of the arm part facing each other. As shown in FIG. 5, when the external force input portion 15 is pushed in by an external force, the stopper 16 contacts a part of the external force input portion 15 and restricts the protruding length L of the tip 13 a of the sharp portion 13. In the present specification, the protruding length L is a length in which the length protruding from the wall surface 12a of the arm portion of the tip 13a of the sharp portion 13 is the maximum. However, as long as the protrusion length L of the tip 13a of the sharp portion 13 can be regulated, the installation position and the number of the stoppers 16 are not limited.

  Next, the operation of removing the balloon 3 from the ultrasonic endoscope 2 using the balloon removing jig 1 will be described. First, alignment between the balloon removing jig 1 and the band portion 31 of the balloon 3 is performed. When the balloon detachment jig 1 and the band 31 of the balloon 3 are aligned, the balloon detachment jig 1 and the ultrasonic endoscope 2 are in the positional relationship shown in FIGS. One arm portion 12 is placed along the band portion 31 of the balloon 3.

  Here, in the state shown in FIG. 4, the external force input portion 15 is urged toward the outside in the longitudinal direction of the main body portion 11 by the elastic portion 17, whereby the sharp portion 13 is accommodated in the accommodating portion 14. . At this time, the distal end 13 a of the sharp portion 13 is located outside the wall surface 12 a that is a side surface of the arm portion 12 facing each other in the longitudinal direction of the main body portion 11. Therefore, the tip 13a of the sharp part 13 is prevented from scratching the ultrasonic endoscope 2 during alignment.

  Subsequently, when an external force in the direction opposite to the elastic force of the elastic portion 17 is input to the external force input portion 15 from the state of FIG. 4, the tip 13 a of the sharp portion 13 is in the longitudinal direction of the main body portion 11. It protrudes inward from the wall surface 12a which is a side surface facing each other. Further, when the protruding tip 13 a of the sharp part 13 comes into contact with the band part 31 of the balloon 3, the band part 31 is cut by the tip 13 a of the sharp part 13. As a result, the balloon 3 is removed from the ultrasonic endoscope 2. At this time, the distal end 13a of the sharp part 13 contacts only the band part 31 of the balloon 3 and does not contact other parts of the ultrasonic endoscope 2, so that the ultrasonic endoscope 2 may be damaged. It is prevented. Accordingly, the balloon removal jig 1 is a balloon removal jig for an ultrasonic endoscope that can easily remove the balloon without damaging the ultrasonic endoscope.

  In the balloon removing jig 1, the width Wa of the arm portion 12 is narrower than the width Wg of the balloon groove 21, so that it is easy to see when aligning the balloon removing jig 1 and the band portion 31 of the balloon 3. Matching is easy. Furthermore, in the balloon removal jig 1, since the width Ws of the cutting edge of the sharp portion 13 is narrower than the width Wg of the balloon groove 21, the sharp portion 13 abuts only on the band portion 31 of the balloon 3, and the ultrasonic endoscope 2 is moved. Injury is prevented.

  In addition, the structure which can change the fixing position of the stopper 16 to the accommodating part 14 may be sufficient. FIG. 6 is a schematic diagram illustrating a modified example of the accommodating portion of the first embodiment. The accommodating portion 14A of the modification of the first embodiment has a hole 14Aa, a hole 14Ab, and a hole 14Ac. 6 is a direction in which the sharp portion 13 protrudes. As shown in FIG. 6, the accommodating portion 14 </ b> A has a plurality of holes 14 </ b> Aa, 14 </ b> Ab, and 14 </ b> Ac, and the fixing position of the stopper 16 to the accommodating portion 14 can be changed, so that the tip 13 a of the sharp portion 13 can be changed. The protrusion length L is variable. With this configuration, the balloon removal jig 1 can be used for various types of ultrasonic endoscopes, and versatility is improved.

(Embodiment 2)
Next, the balloon removal jig for ultrasonic endoscopes according to the second embodiment will be described. FIG. 7 is a schematic cross-sectional view corresponding to the line CC of FIG. 1 of the balloon removal jig for an ultrasonic endoscope according to the second embodiment of the present invention. FIG. 8 is a schematic view of the ultrasonic endoscope balloon detaching jig according to the second embodiment of the present invention as seen from the direction corresponding to the side of FIG. A balloon removal jig 4 that is a balloon removal jig for an ultrasonic endoscope according to the second embodiment includes a main body part 41, an arm part 42, a sharp part 43, a storage part 44, and an external force input part 45. The stopper 46 and an elastic part (not shown) are provided. In the following description, the description of the same configuration as that of the balloon removal jig 1 of Embodiment 1 will be omitted as appropriate. As shown in FIG. 8, the ultrasonic endoscope 2A is a perspective endoscope having an inclined surface 2Aa.

  The main body 41 has two contact surfaces, a first contact surface 41a and a second contact surface 41b, as positioning means.

  The arm portion 42 has the same width as the accommodating portion 44 in the direction perpendicular to the longitudinal direction of the main body portion 41 and the direction in which the arm portion 42 extends. As a result, the rigidity of the arm portion 42 is increased, and the arm portion 42 is prevented from being bent when an external force is applied to the external force input portion 45.

  As shown in FIG. 8, the accommodating portion 44 has a cylindrical shape. Thus, the shape of the accommodating portion is not particularly limited.

  Here, as shown in FIG. 8, the first contact surface 41 a contacts the upper surface of the ultrasonic endoscope 2 in FIG. 8. As a result, the vertical positioning of FIG. 8 is performed between the balloon removing jig 4 and the band portion 31 of the balloon 3. The second contact surface 41b contacts the inclined surface 2Aa extending in the oblique direction of the ultrasonic endoscope 2A. As a result, the positioning of the balloon removing jig 4 and the band portion 31 of the balloon 3 in the left-right direction in FIG. 8 is performed. Accordingly, the balloon removing jig 4 is positioned in the vertical and horizontal directions with respect to the band portion 31 of the balloon 3 by the first contact surface 41a and the second contact surface 41b, and the tip of the sharp portion 43 is placed on the band 3 of the balloon 3. The part 31 can be reliably brought into contact. By having the positioning means in this way, the position of the tip of the sharp part 43 and the band part 31 of the balloon 3 is displaced, and the tip of the sharp part 43 is prevented from scratching the ultrasonic endoscope 2A. It may be a configuration.

  And after positioning, when the external force opposite to the elastic force of the elastic part (not shown) is inputted to the external force input part 45 and the tip of the sharp part 43 is projected, the band part 31 of the balloon 3 can be cut. . Therefore, the balloon removing jig 4 is a balloon removing jig for an ultrasonic endoscope that can easily remove the balloon without damaging the ultrasonic endoscope.

  The contact surface may be only one surface or may be a plurality of three or more. Further, the positioning means is not limited to the contact surface. The ultrasonic endoscope balloon detaching jig may have a contact portion that comes into contact with the distal end of the ultrasonic endoscope. Moreover, the structure which has an engaging part which engages and positions a balloon groove | channel may be sufficient as the balloon removal jig | tool for ultrasonic endoscopes. Moreover, the balloon removal jig for ultrasonic endoscopes may include a marker for positioning and perform positioning by aligning the marker with a predetermined part of the ultrasonic endoscope. .

  Further, the present invention is not limited by the above embodiment. What was comprised combining each component mentioned above suitably is also contained in this invention. Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspect of the present invention is not limited to the above-described embodiment, and various modifications can be made.

1, 4 Balloon removal jig 2, 2A Ultrasound endoscope 2Aa Inclined surface 3 Balloon 11, 41 Body portion 12, 42 Arm portion 12a Wall surface 13, 43 Sharp portion 13a Tip 14, 14A, 44 Housing portion 14Aa, 14Ab, 14Ac hole 15, 45 External force input part 16, 46 Stopper 17 Elastic part 21 Balloon groove 31 Band part 41a First contact surface 41b Second contact surface L Projection length Wa, Wg, Ws Width

Claims (10)

A balloon removal jig for an ultrasonic endoscope that removes a balloon attached to the ultrasonic endoscope from the ultrasonic endoscope,
A main body having a length in a longitudinal direction larger than a diameter of a band portion located at an end of the balloon attached to the ultrasonic endoscope;
Two arm portions each extending in a direction orthogonal to the longitudinal direction from both longitudinal ends of the body portion;
A sharp portion that protrudes from and retracts along the longitudinal direction of the main body portion from at least one of the side surfaces facing each other of the two arm portions, and has a sharp tip.
An accommodation mechanism that is provided on a side surface of the arm portion that is opposite to a side on which the sharp portion protrudes, and that accommodates the sharp portion so as to freely advance and retract;
A balloon removal jig for an ultrasonic endoscope, comprising: The housing mechanism is
An accommodating portion for accommodating the sharp portion so as to freely advance and retract;
An elastic part that biases the sharp part in a direction opposite to the direction in which the sharp part protrudes;
Connected to the sharp part, an external force applied in the direction opposite to the elastic force of the elastic part is input, and the tip of the sharp part accommodated in the accommodating part protrudes from the side surfaces of the two arm parts facing each other. An external force input section
The balloon removal jig for an ultrasonic endoscope according to claim 1, comprising: At the tip of the sharp part, a cutting edge is formed along a direction orthogonal to the longitudinal direction of the main body part and the direction in which the arm part extends,
The balloon removal jig for an ultrasonic endoscope according to claim 1 or 2, wherein the cutting edge of the sharp part protrudes from the side surfaces of the two arm parts facing each other.   The balloon detachment jig for an ultrasonic endoscope according to claim 3, further comprising positioning means for positioning the blade edge of the sharp part and the band part of the balloon.   5. The positioning means includes an abutting surface that abuts a predetermined surface of the ultrasonic endoscope and positions the blade edge of the sharp portion and the band portion of the balloon. The balloon removal jig for ultrasonic endoscopes described in 1.   It is fixed to the accommodation mechanism, and includes a stopper that regulates a protruding length that is the maximum length protruding from the opposite side surfaces of the two arm portions at the tip of the sharp portion. The balloon removal jig for ultrasonic endoscopes according to any one of claims 1 to 5.   The balloon removal jig for an ultrasonic endoscope according to claim 6, wherein the protrusion length regulated by the stopper is variable.   The balloon removing jig for an ultrasonic endoscope according to claim 2, wherein the elastic part is a coiled spring. The ultrasonic endoscope is formed with a balloon groove into which the band portion is fitted,
At the tip of the sharp part, a cutting edge is formed along a direction orthogonal to the longitudinal direction of the main body part and the direction in which the arm part extends,
The width of the cutting edge of the sharp part in the direction perpendicular to the longitudinal direction of the main body part and the direction in which the arm part extends is narrower than the width of the balloon groove formed in the ultrasonic endoscope. The balloon removal jig for an ultrasonic endoscope according to any one of claims 1 to 8. The ultrasonic endoscope is formed with a balloon groove into which the band portion is fitted,
The width of the arm portion in a direction orthogonal to the longitudinal direction of the main body portion and a direction in which the arm portion extends is narrower than a width of the balloon groove formed in the ultrasonic endoscope. The balloon removal jig for ultrasonic endoscopes according to any one of 1 to 9.

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