JP4488300B2 - Ultrasound endoscope balloon device - Google Patents

Description

  The present invention relates to an ultrasonic endoscope that is attached to a distal end portion of an insertion portion including an ultrasonic transmission / reception unit including an ultrasonic transducer and is filled with an ultrasonic transmission medium liquid in an ultrasonic endoscope device. The present invention relates to a balloon device.

  A conventional ultrasonic endoscope inserts an insertion portion having a distal end portion including an ultrasonic transmission / reception unit including an ultrasonic transducer into a body cavity, transmits ultrasonic waves to a living tissue, and is reflected from the living tissue. An ultrasonic tomographic image is generated by reflected ultrasonic waves. Based on the generated ultrasonic tomographic image, the inside of the living tissue is observed by a doctor or the like.

  It is desirable that the ultrasonic transmission / reception unit incorporated in the distal end of the insertion unit and the living tissue are in close contact with each other. If a gap is generated between the ultrasonic transmission / reception unit and the biological tissue, the ultrasonic wave is generated by the gap. It attenuates and a desired ultrasonic tomographic image cannot be obtained. For this purpose, a balloon formed of an elastic member such as rubber is attached to the distal end portion of the insertion portion including the ultrasonic transmission / reception portion, and the ultrasonic transmission medium liquid is filled in the balloon.

  The ultrasonic wave transmitted from the ultrasonic transmission / reception unit provided at the distal end of the insertion unit is adhered to the balloon filled with the ultrasonic transmission medium solution to the living tissue, so that the ultrasonic transmission medium solution in the balloon is The reflected ultrasonic wave transmitted to the living tissue via the vortex and reflected from the living tissue is also input to the ultrasonic transmitting / receiving unit via the ultrasonic transmission medium liquid in the balloon.

  For example, Patent Literature 1 and Patent Literature 2 have proposed ultrasonic endoscopes that can attach a balloon to the distal end portion of the insertion portion in which the ultrasonic transmission / reception portion is built. The configuration of the distal end portion of the insertion portion of the ultrasonic endoscope to which the balloon proposed in Patent Documents 1 and 2 can be attached will be described with reference to FIG. FIG. 9 shows an ultrasonic endoscope that scans and transmits ultrasonic waves from an ultrasonic vibrator by mechanically driving the ultrasonic vibrator with a motor, and at the distal end of the insertion portion of the ultrasonic endoscope. It is a side view which shows the state with which the balloon was mounted | worn.

  A distal end hard portion 31 provided with an observation window, a forceps window, a water supply / air supply opening, a water intake / intake opening, and the like (not shown) at the distal end portion 30 of the insertion portion of the ultrasonic endoscope, and the distal end hard portion 31 And a tip cap portion 32 having a built-in ultrasonic transmission / reception portion including an ultrasonic transducer (not shown) formed in a projecting manner. A balloon rear end mounting groove 35 to which a balloon 21 to be described later is mounted is provided on the outer periphery continuous with the distal end hard portion 31 on the rear end side of the front end cap portion 32, and the front end side of the end cap 32 is provided. Is provided with a balloon tip mounting groove 34 to which a balloon 21 described later is mounted. Further, a water supply / water absorption groove 33 for water supply and water absorption of the ultrasonic transmission medium liquid is provided on the side of the balloon front end attachment groove 34 in the vicinity of the balloon rear end attachment groove 35 of the tip cap portion 32. Although not shown, the water supply / water absorption groove 33 communicates with the water supply and water absorption conduit of the ultrasonic transmission medium liquid provided from the distal end hard portion 31 to the insertion portion.

  The balloon 21 attached to the tip cap portion 32 is provided at a thin, substantially cylindrical balloon main body portion 22 formed of an elastic member such as rubber, and opening portions at both ends of the balloon main body portion 22. It consists of thick annular portions 23 and 24 formed integrally with the portion 22. The inner diameters of the thick annular portions 23 and 24 formed at the opening portions at both ends of the balloon main body portion 22 of the balloon 21 are the balloon tip mounting grooves 34 provided in the tip cap portion 32 in the normal state of the elastic member. Are formed smaller than the outer diameter of the balloon rear end mounting groove 35.

  When the annular portions 23 and 24 are attached to the balloon front end mounting groove 34 and the balloon rear end mounting groove 35, they are brought into close contact with the balloon front end and the rear end mounting grooves 34 and 35 by the elastic force of the annular portions 23 and 24. The inside of the balloon main body 22 is sealed in a watertight manner. After the balloon 21 is attached to the tip cap portion 32, the ultrasonic transmission medium liquid is injected into the balloon 21 from the water supply / water absorption conduit of the insertion portion through the water supply / absorption groove 33.

  That is, the annular portions 23 and 24 of the balloon 21 have a shape and elastic force that are watertightly attached to the balloon front and rear end attachment grooves 34 and 35. The inner diameter of the balloon main body 22 of the balloon 21 is slightly larger than the outer diameter of the tip cap 32 or is formed to have a size substantially equal to the shape of the balloon main body 22. The balloon main body 22 and the annular portions 23 and 24 of the balloon 21 having such a shape are spread against the elastic force and mounted on the balloon front end and the rear end mounting grooves 34 and 35 of the front end cap portion 32. It is very difficult and complicated.

  A mounting jig (for example, refer to Patent Document 3) for facilitating the mounting operation of the balloon 21 to the distal end cap 32 of this ultrasonic endoscope, and a balloon having a shape that can be easily mounted on the distal end cap 32 (for example, Patent Reference 4) is proposed.

By using the mounting jig proposed in Patent Document 3 or using the balloon proposed in Patent Document 4, the complexity of the mounting operation on the tip cap 32 can be eliminated.
Japanese Examined Patent Publication No. 2-57932 Japanese Patent Publication No.5-10098 Japanese Utility Model Publication No. 3-91312 Japanese Utility Model Publication No. 63-172406

  As shown in Patent Documents 3 and 4, a number of balloon attachment jigs for filling an ultrasound transmission medium liquid at the distal end of an insertion part of an ultrasonic endoscope and a balloon having an easy-to-wear shape have been proposed. ing.

  However, the balloon 21 attached to the distal end portion 30 of the insertion portion of the ultrasonic endoscope is inserted into the body cavity together with the distal end portion 30 and filled with the ultrasonic transmission medium liquid, and an ultrasonic diagnosis is performed. Later, it is necessary to pull out from the body cavity together with the distal end portion 30 and remove it from the distal end portion 30 for reliable disposal.

  The operation of removing the balloon 21 from the distal end portion 30 after the ultrasonic diagnosis is generally performed by picking up the balloon main body 22 with a finger and moving the annular portions 23 and 24 to the balloon distal end and the rear end of the distal end cap portion 32. The mounting grooves 34 and 35 are removed. However, in the body cavity, the surface of the balloon 21 used for ultrasonic diagnosis is wet with body fluid in the body cavity or a cleaning liquid projected from the observation window of the distal end hard portion 31. For this reason, when the balloon main body part 32 is picked up, it becomes difficult to slide and remove, and the removal work of the balloon 21 becomes complicated.

  The present invention has been made in view of such circumstances, and an ultrasonic wave that can be easily removed from the distal end of the insertion portion after the end of ultrasonic diagnosis and can reliably avoid reuse of a used balloon. An object of the present invention is to provide an endoscopic balloon device.

  The balloon device for an ultrasonic endoscope of the present invention includes an ultrasonic transmission / reception unit including an ultrasonic transducer, and is attached to a distal end portion of an insertion portion to be inserted into a body cavity and filled with an ultrasonic transmission medium liquid. In the balloon apparatus for an ultrasonic endoscope formed by the elastic member, the balloon main body formed by the elastic member and the balloon main body are integrally formed and provided on the outer periphery of the distal end of the insertion portion. A thick annular portion elastically mounted in the balloon mounting groove, and a towing cutting member embedded in the annular portion so as to tow and cut the annular portion provided in the balloon main body portion. It is said.

  The balloon main body of the balloon device for an ultrasonic endoscope according to the present invention is characterized in that it is formed in a substantially bag shape, and the thick annular portion is formed in the bag-like opening portion.

  The balloon main body of the balloon device for an ultrasonic endoscope of the present invention is characterized by being formed in a substantially cylindrical shape, and the thick annular portions are formed at the opening portions at both ends of the cylindrical shape. The pulling and cutting member of the balloon device for an ultrasonic endoscope according to the present invention is characterized in that it is embedded in either one of annular portions provided at both ends of the balloon main body portion formed in a substantially cylindrical shape. .

  The pulling and cutting members of the balloon device for an ultrasonic endoscope of the present invention are embedded in annular portions provided at both ends of the balloon main body portion formed in a substantially cylindrical shape, respectively, and inside the balloon main body portion. It is characterized by being inserted into space.

  In addition, the pulling and cutting member of the balloon device for an ultrasonic endoscope of the present invention is embedded in the annular portion of the balloon main body portion, and a grip portion is provided in a portion extending from the annular portion to the outside. It is characterized by.

  The balloon device for an ultrasonic endoscope according to the present invention is to remove the distal end portion of the insertion portion after diagnosis of the ultrasonic endoscope by pulling a pulling cutting member provided on the annular portion of the balloon to cut the annular portion. As a result, the efficiency of removing the balloon from the tip is improved, and the removed balloon is in a non-reusable state, so that erroneous reuse can be reliably prevented and the storage management of the balloon is facilitated. have.

  Hereinafter, embodiments of a balloon device for an ultrasonic endoscope according to the present invention will be described with reference to the drawings. First, in the ultrasonic transmission / reception unit built in the distal end of the insertion portion of the ultrasonic endoscope, a mechanical scanning ultrasonic endoscope in which an ultrasonic transducer is mechanically rotated by a motor and ultrasonic waves are scanned and transmitted. A balloon device used for a mirror will be described with reference to FIGS. FIG. 1 is a side view showing a state in which a balloon device for an ultrasonic endoscope according to a first embodiment of the present invention is mounted on a distal end portion of an insertion portion of a mechanical ultrasonic endoscope, and FIG. 1 shows an ultrasonic endoscope balloon device according to an embodiment, FIG. 2 (a) is an external side view, and FIG. 2 (b) is a cross-sectional view as seen from the side. Note that the same parts as those in FIG.

  The configuration of the balloon device for an ultrasonic endoscope according to the first embodiment of the present invention will be described with reference to FIG. The balloon 11 of the present invention is formed of an elastic member such as rubber, and is provided in a relatively thin substantially cylindrical balloon main body 12 and opening portions at both ends of the balloon main body 12, and is integrated with the balloon main body 12. It consists of the thick annular parts 13 and 14 formed in this.

  The inner diameters of the thick annular portions 13 and 14 formed at the opening portions at both ends of the balloon main body portion 12 of the balloon 11 are provided at the distal end cap portion 32 of the ultrasonic endoscope in the normal state of the elastic member. It is formed smaller than the outer diameter of the balloon front end mounting groove 34 and the balloon rear end mounting groove 35.

  One thread-like traction cutting member 15 is embedded in a specific portion of the annular portions 13 and 14. One end portion 15a of the traction cutting member 15 is embedded in the annular portion 13 and extends to the outside by a predetermined dimension, and the other end portion 15b of the traction cutting member 15 is embedded in the annular portion 14 and extends to the outside by a predetermined dimension. The intermediate portion of the pulling and cutting member 15 is inserted along the inner wall surface of the internal space of the balloon main body 12.

  Further, both end portions 15a and 15b of the traction cutting member 15 extending to the outside from the annular portions 13 and 14 extend to a length that can be grasped by the operator. Further, the pulling and cutting member 15 is formed in a thread shape, and is formed of a member that can cut the annular portions 13 and 14 of the balloon 11 when the both end portions 15a and 15b are pulled. That is, in the annular portions 13 and 14 of the balloon 11, a traction cutting member 15 capable of cutting the annular portions 13 and 14 by a traction operation is embedded.

  As shown in FIG. 1, the balloon 11 having the above-described configuration uses an ultrasonic transmission / reception unit provided at the distal end portion 30 of the insertion portion of the ultrasonic endoscope as shown in FIG. It is attached to the built-in tip cap part 32. The balloon 11 attached to the tip cap portion 32 has the annular portions 13 and 14 attached to the balloon tip attachment groove 34 and the balloon rear end attachment groove 35 of the tip cap portion 32, and the annular portions 13 and 14 of the balloon 11. Due to the elastic force, the balloon tip and rear end attachment grooves 34 and 35 are watertightly attached.

  After the balloon 11 is attached to the distal end cap portion 32, an ultrasonic transmission medium liquid is injected into the balloon main body portion 12 through the water supply / absorption groove 33 from the water supply / absorption conduit communicated with the insertion portion. Ultrasonic diagnosis is performed in a state where the ultrasonic transmission medium liquid is injected into the balloon main body 12.

  Next, after the ultrasonic diagnosis is completed, the insertion part of the ultrasonic endoscope is pulled out from the body cavity, and the ultrasonic transmission medium liquid injected into the balloon main body 12 is discharged, and then the insertion is performed. The balloon 11 attached to the tip cap part 32 of the part 30 is removed. The removal of the balloon 11 from the tip cap portion 32 extends from the annular portions 13 and 14 of the balloon 11 that are closely attached to the balloon tip mounting groove 34 and the balloon rear end mounting groove 35 of the tip cap portion 32, respectively. The end portions 15a and 15b of the traction cutting member 15 are gripped and pulled in the direction of the arrow in FIG. When the annular portions 13, 14 are cut by pulling the end portions 15 a, 15 b of the traction cutting member 15, the elastic force of the annular portions 13, 14 is collapsed, and the balloon main body portion 12 is easily removed from the tip cap portion 32. Can be removed.

  Therefore, since the annular portions 13 and 14 of the balloon 11 removed from the tip cap portion 32 are cut by the traction cutting member 15, it is impossible to remount the tip cap portion 32 and use it at a glance. It is possible to determine that it has been completed.

  Further, when the balloon 11 is mounted on the distal end cap part 32, the reference position of the ultrasonic transmission / reception unit incorporated in the distal end cap part 32, that is, the orientation of the distal end cap part 32, and the pulling of the balloon 11. The position of the cutting member 15 is adjusted and attached. Thereby, the image of the traction cutting member 15 generated by the reflected ultrasound reflected by the traction cutting member 15 of the balloon 11 can be displayed in the ultrasonic image, and the tip cap 32 in the ultrasonic image can be displayed by the image display of the traction cutting member 15. Can be determined.

  As explained above, the balloon device for an ultrasonic endoscope of the present invention has the traction cutting member 15 embedded in the annular portions 13 and 14 at both ends of the balloon 11, so that the insertion portion of the ultrasonic endoscope is provided. For attaching the tip portion 30 to the tip cap portion 32, the same attachment jig as in the prior art can be used. After the ultrasonic endoscopic diagnosis is completed, the towing cutting member 15 of the balloon 11 is pulled to pull the annular portions 13, 14 together. The balloon 11 can be easily removed from the tip cap portion 32 by cutting. Since the annular portions 13 and 14 of the removed balloon 11 are cut, reuse can be reliably prevented. Further, when the balloon 11 is attached to the distal end cap part 32, the orientation of the distal end cap part 32 in the ultrasonic image can be determined by matching the position of the traction cutting member 15 and the reference position of the distal end cap part 32. Become.

  Next, a first application example of the first embodiment of the balloon device for an ultrasonic endoscope of the present invention will be described with reference to FIG. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted. In the balloon 11-1 of the first application example, the traction cutting member 15 is embedded in a specific portion of one annular portion 13 among the annular portions 13 and 14 provided at the openings at both ends of the balloon main body portion 12. ing. That is, one end 15a of the traction cutting member 15 embedded in the one annular portion 13 extends outward from the annular portion 13, and the other end 15b extends from the inner space of the balloon main body 12 to the other annular shape. It extends from the opening of the portion 14 to the outside.

  The balloon 11-1 having such a configuration is attached to the distal end cap portion 32 of the distal end portion 30 of the ultrasonic endoscope using the same mounting jig as in the past. When detaching from the tip cap portion 32, the one end portion 15a of the traction cutting member 15 is pulled, the one annular portion 13 is cut, and the other end portion 15b of the traction cutting member 15 is pulled. The other annular portion 14 is removed from the balloon rear end mounting groove 35 of the tip cap portion 32 to release the mounting. As a result, similarly to the first embodiment described above, the balloon 11-1 can be easily removed from the tip cap portion 32, and reuse can be prevented and the orientation of the tip cap portion 32 can be determined.

  In this first application example, the annular portion 13 in which the one end 15a of the traction cutting member 15 is embedded is changed to the annular portion 14, and the other end 15b of the traction cutting member 15 is used in the internal space of the balloon body 12. The same effect can be obtained even if the annular portion 14 inserted and extended to the outside is changed to the annular portion 13.

  Next, a second application example of the first embodiment of the balloon device for an ultrasonic endoscope of the present invention will be described with reference to FIG. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted. In the balloon 11-2 of the second application example, both ends of the annular portions 13 and 14 provided at the opening portions at both ends of the balloon main body portion 12 are extended to specific portions of one annular portion 13 to the outside. A traction cutting member 16a is embedded, and a traction cutting member 16b having both ends extending to the outside is embedded in a specific portion of the other annular portion 14. The traction cutting member 16a and the traction cutting member 16b are independent of each other and are not connected. That is, the annular portion 13 is cut by gripping and pulling both ends of the pulling and cutting member 16 a embedded in the one annular portion 13. Further, the annular portion 14 is cut by grasping and pulling both end portions of the pulling member 16 b embedded in the other annular portion 14.

  The balloon 11-2 having such a configuration is attached to the distal end cap portion 32 of the distal end portion 30 of the ultrasonic endoscope using the same mounting jig as in the past. When removing from the front-end | tip cap part 32, the said tractive cutting members 16a and 16b are each pulled, and the cyclic | annular parts 13 and 14 are cut | disconnected. As a result, as in the first embodiment and the first application example described above, the balloon 11-2 can be easily removed from the distal end cap portion 32, and reuse can be prevented.

  Next, the 3rd application example of 1st Embodiment of the balloon apparatus for ultrasonic endoscopes of this invention is demonstrated using FIG. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted. The balloon 11-3 of the third application example embeds a traction cutting member 17 whose both ends are extended to the outside at a specific portion of only one annular portion 13 provided at the opening of both ends of the balloon main body 12. I am letting.

  The balloon 11-3 having such a configuration is mounted on the distal end cap 32 of the distal end portion 30 of the ultrasonic endoscope using the same mounting jig as in the past. When removing from the tip cap portion 32, the annular portion 13 is cut by gripping and pulling both ends of the traction cutting member 17 embedded in the one annular portion 13. The balloon 11-3 in which the one annular portion 13 is cut by the pulling and cutting member 17 grips the balloon main body portion 12 and attaches the other annular portion 14 to the balloon rear end attachment groove 35 of the tip cap portion 32. To cancel. As a result, as in the first embodiment and the first and second application examples described above, the balloon 11-3 can be easily removed from the tip cap portion 32, and reuse can be prevented. The same effect can be obtained even if the annular portion 13 in which the traction cutting member 17 is embedded is changed to the annular portion 14.

  Next, a second embodiment of the balloon device for an ultrasonic endoscope of the present invention will be described with reference to FIGS. The ultrasonic endoscope used in the second embodiment has a plurality of ultrasonic transducers arranged in a fan shape inside the ultrasonic transmission / reception unit 32a of the distal end portion 30a of the insertion unit, and the plurality of ultrasonic endoscopes. This is a convex scanning type in which ultrasonic waves are scanned by sequentially switching acoustic transducers electrically.

  FIG. 6 is a side view showing a state in which the balloon device for an ultrasonic endoscope according to the second embodiment of the present invention is attached to the distal end portion of the insertion portion of a convex scanning type ultrasonic endoscope, and FIG. The balloon apparatus for ultrasonic endoscopes which is the 2nd Embodiment of this invention is shown, Fig.7 (a) is an external appearance side view, FIG.7 (b) is sectional drawing seen from the side surface.

  As shown in FIG. 6, the convex scanning type ultrasonic endoscope provided in the balloon device for an ultrasonic endoscope of the second embodiment has a distal end portion 30a of the insertion portion of the ultrasonic endoscope. , A distal end hard portion 31a provided with an observation window, a forceps window, a water supply / air supply opening, a water suction / intake opening, etc., not shown, and a convex scanning type super-projection formed continuously from the tip hard portion 31a. And a sound wave transmitting / receiving unit 32a. A balloon mounting groove 35a in which a balloon 17 described later is mounted is provided on the outer periphery connected to the distal end hard portion 31a on the rear end side of the ultrasonic transmission / reception unit 32a. A water supply / water absorption groove 33a for water supply and water absorption of the ultrasonic transmission medium is provided on the ultrasonic transmission / reception unit 32a side near the balloon mounting groove 35a. Although not shown, the water supply / water absorption groove 33a is communicated from the distal end hard portion 31a to the water supply / water absorption conduit of the ultrasonic transmission medium liquid provided in the insertion portion.

  The balloon 17 attached to the ultrasonic transmission / reception unit 32a of the convex scanning type ultrasonic endoscope having such a configuration will be described with reference to FIG. The balloon 17 used for this convex scanning type ultrasonic endoscope is formed in a bag shape so as to cover the entire outer periphery of the ultrasonic transmission / reception unit 32a, and a balloon main body 18 formed thinly by an elastic member such as rubber. A thick annular portion 19 provided in an opening portion of the bag-shaped balloon main body portion 18 is integrally formed. The annular portion 19 of the balloon 17 is formed to have an inner diameter smaller than the outer diameter of the balloon mounting groove 35a of the distal end portion 30a, and is attached to the balloon mounting groove 35a in a watertight manner by the elastic force of the elastic member. Yes. The balloon body 18 is formed in a shape and dimensions that cover the entire outer periphery of the tip gap portion 32a when the annular portion 19 is mounted in the balloon mounting groove 35a of the tip portion 30a.

  A single thread-like traction cutting member 20 is embedded in a specific portion of the annular portion 19 of the balloon 17. Both ends of the traction cutting member 20 are extended to the outside by a predetermined dimension from the embedded annular portion 19. The pulling / cutting member 20 is configured to grasp both ends or one end extending from the annular portion 19 and pull it to cut the annular portion 19.

  The balloon 17 having such a configuration is mounted on the ultrasonic transmission / reception unit 32a of the distal end portion 30a using the same mounting jig as before, inserted into a body cavity, and the inside of the balloon 17 is filled with an ultrasonic transmission medium liquid. When ultrasonic observation is performed and the balloon 17 is removed from the ultrasonic transmission / reception unit 32a after ultrasonic observation, the end of the pulling / cutting member 20 extending from the annular portion 19 is pulled to cut the annular portion 19. Thus, the balloon 17 can be easily detached from the ultrasonic transmission / reception unit 32a, and the annular portion 19 of the removed balloon 17 is cut, so that it cannot be reused. It has the same effect.

  Next, a balloon device for an ultrasonic endoscope according to a third embodiment of the present invention will be described with reference to FIG.

  In the first and second embodiments of the present invention described above, the outer portions extend from the annular portions 13, 14, 19 of the traction cutting members 15, 20 embedded in the annular portions 13, 14, 19 of the balloons 11, 17, respectively. It has been described that the annular portions 13, 14, 19 are cut by pulling the end portions.

  However, the traction cutting members 15 and 20 are inserted into the body cavity and are wetted by body fluids or cleaning liquids, so that the traction cutting members 15 and 20 are slippery and difficult to grip when the traction cutting members 15 and 20 are pulled, or traction cutting is performed. It is also conceivable that the traction cutting members 15 and 20 come off from the annular portions 13, 14 and 19 depending on the traction direction of the members 15 and 20.

  Therefore, as shown in FIG. 8, a predetermined dimension is extended from the annular portions 13, 14, 19 of the traction cutting members 15, 20 embedded in the annular portions 13, 14, 19 of the balloon body portions 12, 18 to the outside. Knots 20a and 20b are formed at both ends. The knots 20a and 20b act as slip stoppers when towed and prevent the annular parts 13, 14, and 19 from coming off, and the annular parts 13, 14, and 19 can be easily cut.

  Although not shown in the figure, instead of the knots 20a and 20b, the same action can be obtained by forming a flat part obtained by flattening the alignment of the traction cutting members 15 and 20 or a hump-like deformed part. .

  That is, the index cutting members 15 and 20 embedded in the annular portions 13, 14, and 19 are provided with gripping portions such as knots, flat portions, or hump-shaped deformation portions, and the gripping portions are gripped. By pulling, it is possible to prevent slipping and detachment and to easily cut the annular portions 13, 14, 19.

[Appendix]
According to the embodiment of the present invention described in detail above, the following configuration can be obtained.

(Additional remark 1) The ultrasonic wave formed by the elastic member with which the ultrasonic transmission / reception part containing an ultrasonic transducer | vibrator was built in, and was mounted | worn with the front-end | tip part of the insertion part inserted in a body cavity and with which an ultrasonic transmission medium liquid was filled. In an endoscope balloon device,
A balloon body formed by the elastic member;
A thick annular portion integrally formed with the balloon main body and elastically mounted in a balloon mounting groove provided on the outer periphery of the distal end of the insertion portion;
A tow cutting member embedded in the annular part so as to tow and cut the annular part provided in the balloon body part;
A balloon device for an ultrasonic endoscope, comprising:

  (Additional remark 2) The said balloon main-body part is formed in a substantially bag shape, and the said thick cyclic | annular part is formed in the bag-shaped opening part, For ultrasonic endoscopes of Additional remark 1 characterized by the above-mentioned. Balloon device.

  (Additional remark 3) The said balloon main-body part is formed in the substantially cylindrical shape, and the said thick annular part is formed in the opening part of the both ends of the cylindrical shape, The ultrasonic endoscope of Additional remark 1 characterized by the above-mentioned Mirror balloon device.

  (Additional remark 4) The said pulling cutting member is embed | buried in either one of the cyclic | annular parts provided in the both ends of the said balloon main-body part formed in the substantially cylindrical shape, The ultrasonic inside of Additional remark 3 characterized by the above-mentioned Endoscopic balloon device.

  (Additional remark 5) The said traction cutting member is each embed | buried by the annular part provided in the both ends of the said balloon main-body part formed in the substantially cylindrical shape, and is penetrated by the internal space of the said balloon main-body part. The balloon device for an ultrasonic endoscope according to appendix 3, characterized by:

  (Additional remark 6) The said pulling cutting member is embed | buried under the annular part of the said balloon main-body part, and the holding part is provided in the part extended outside from the annular part, The additional notes 1 thru | or 5 characterized by the above-mentioned. The balloon device for an ultrasonic endoscope according to any one of the above.

  (Supplementary Note 7) The pulling and cutting member inserted into the internal space of the balloon main body is aligned with the reference position of the distal end of the insertion portion of the ultrasonic endoscope so that the balloon main body is moved into the ultrasonic wave. The balloon device for an ultrasonic endoscope according to any one of appendices 1 to 5, wherein the balloon device is attached to a distal end portion of an insertion portion of an endoscope.

  (Supplementary note 8) Any one of Supplementary notes 1 to 7, wherein the pulling and cutting member is generated by a thread-like member capable of cutting thick annular portions provided at both ends of the balloon main body. The balloon device for an ultrasonic endoscope according to 1.

  (Additional remark 9) The balloon apparatus for ultrasonic endoscopes as described in additional remark 6 characterized by the grip part provided in the said pull cutting member being a knot, a flat part, or a hump-shaped deformation | transformation part.

The side view which shows the state with which the balloon apparatus for ultrasonic endoscopes which is the 1st Embodiment of this invention was mounted | worn with the insertion part front-end | tip part of the ultrasonic endoscope. The structure of the balloon apparatus for ultrasonic endoscopes which is the 1st Embodiment of this invention is shown, Fig.2 (a) is an external appearance side view, FIG.2 (b) is sectional drawing seen from the side surface. Sectional drawing which shows the structure of the 1st application example of the balloon apparatus for ultrasonic endoscopes which is the 1st Embodiment of this invention. Sectional drawing which shows the structure of the 2nd application example of the balloon apparatus for ultrasonic endoscopes which is the 1st Embodiment of this invention. Sectional drawing which shows the structure of the 3rd application example of the balloon apparatus for ultrasonic endoscopes which is the 1st Embodiment of this invention. The side view which shows the state with which the balloon apparatus for ultrasonic endoscopes which are the 2nd Embodiment of this invention was mounted | worn with the insertion part front-end | tip part of an ultrasonic endoscope. The structure of the balloon apparatus for ultrasonic endoscopes which is the 2nd Embodiment of this invention is shown, Fig.7 (a) is an external appearance side view, FIG.7 (b) is sectional drawing seen from the side surface. The expanded sectional view of the annular part which shows the structure of the balloon apparatus for ultrasonic endoscopes which is the 3rd Embodiment of this invention. The side view which shows the state with which the conventional balloon for ultrasonic endoscopes was mounted | worn with the insertion part front-end | tip of an ultrasonic endoscope.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Balloon 12 Balloon main-body part 13 and 14 Annular part 15 Pulling cutting member 30 Ultrasound endoscope insertion part 31 Tip rigid part 32 Tip cap part 33 Water supply water absorption groove 34, 35 Balloon mounting groove Agent Patent attorney Susumu Ito

Claims (6)

For an ultrasonic endoscope having an ultrasonic transmission / reception unit including an ultrasonic transducer and formed by an elastic member that is attached to the distal end of an insertion unit that is inserted into a body cavity and is filled with an ultrasonic transmission medium liquid In the balloon device,
A balloon body formed by the elastic member;
A thick annular portion integrally formed with the balloon main body and elastically mounted in a balloon mounting groove provided on the outer periphery of the distal end of the insertion portion;
A tow cutting member embedded in the annular part so as to tow and cut the annular part provided in the balloon body part;
A balloon device for an ultrasonic endoscope, comprising:   The balloon device for an ultrasonic endoscope according to claim 1, wherein the balloon main body is formed in a substantially bag shape, and the thick annular portion is formed in the bag-like opening portion.   2. The balloon for an ultrasonic endoscope according to claim 1, wherein the balloon main body is formed in a substantially cylindrical shape, and the thick annular portions are formed in opening portions at both ends of the cylindrical shape. apparatus.   The ultrasonic endoscope according to claim 3, wherein the pulling and cutting member is embedded in one of annular portions provided at both ends of the balloon main body formed in a substantially cylindrical shape. Balloon device.   The traction cutting member is embedded in annular portions provided at both ends of the balloon main body formed in a substantially cylindrical shape, and is inserted into the internal space of the balloon main body. The balloon device for an ultrasonic endoscope according to claim 3.   6. The pulling and cutting member is embedded in an annular portion of the balloon main body, and a grip portion is provided in a portion extending from the annular portion to the outside. The balloon apparatus for an ultrasonic endoscope as described.

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