JP2012231833A - Mouthpiece for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mouthpiece reducing discomfort imparted to a subject.SOLUTION: This mouthpiece 1 includes: a cylindrical part 3 inserted into the oral cavity B of the subject; and a guide part 8 fitted in the cylindrical part 3, and guiding an endoscope 2 inserted on the inner circumference side into the esophagus by bending the endoscope 2 on the palate E side inside the oral cavity B to detour around a tongue root part H. The guide part 8 includes a protuberance part 12 rising to the palate E side from a tongue F side of an esophagus side end part 11, guides the endoscope 2 along the protuberance part 12, and bends the endoscope 2 on the palate E side inside the oral cavity B.

Description

  The present invention relates to an endoscope mouthpiece.

  Conventionally, a mouthpiece that can be inserted without causing a pharyngeal reflex to the subject as an auxiliary tool when orally inserting an endoscope such as a nasal endoscope or an oral endoscope into the esophagus Proposed.

  The mouthpiece includes a cylindrical portion that is inserted into the oral cavity of the subject, and a guide portion that is fitted into the cylindrical portion, and the guide portion is an esophageal side end portion of the cylindrical portion. It protrudes into the oral cavity from the mouth and has a shape curved upward and backward from the lingual side toward the palate. According to the mouthpiece, by inserting the endoscope into the inner peripheral side of the guide portion, the endoscope is bent toward the palate in the oral cavity along the shape of the guide portion, and the tongue base portion is It can be detoured and inserted into the esophagus (see, for example, Patent Document 1).

  Therefore, according to the mouthpiece, it is possible to prevent the subject from causing pharyngeal reflexes by bypassing the tongue base and inserting it into the esophagus.

JP 2008-289520 A

  However, the conventional mouthpiece has a shape in which the guide portion protrudes from the esophageal end of the cylindrical portion and is greatly curved toward the palate side. There is an inconvenience that it may come into contact and cause discomfort to the subject.

  An object of this invention is to provide the mouthpiece which can eliminate the inconvenience given to a subject and eliminate such an inconvenience.

  In order to achieve such an object, the present invention provides a cylindrical part inserted into the oral cavity of a subject, and an endoscope fitted into the cylindrical part and inserted into the inner peripheral side. A mouthpiece having a guide portion that bypasses the tongue base portion and guides it to the esophagus by curving to the palate side, and the guide portion is a straight tube and is raised from the tongue side of the esophagus side end portion to the palate side The endoscope is characterized in that the endoscope is guided along the raised portion and curved toward the palate in the oral cavity.

  In the mouthpiece of the present invention, the bulge portion is provided at the esophageal side end portion of the straight tubular guide portion, and the endoscope is guided by the bulge portion to be bent toward the palate in the oral cavity. , Bypass the tongue base and guided to the esophagus. As a result, the guide portion does not need to have a shape curved toward the palate side, and the amount of protrusion of the tubular portion from the esophageal end can be reduced.

  Therefore, according to the mouthpiece of the present invention, the overall length can be shortened as compared with the conventional mouthpiece, and it is provided to the subject by preventing contact with the palate when inserted into the oral cavity. Discomfort can be reduced.

  In the mouthpiece of the present invention, the guide portion is a straight tube, and a bay portion where the endoscope guided to the palate side in the oral cavity by the raised portion is held on the palate side of the esophagus side end portion. It is preferable to provide.

  Oral insertion of the endoscope is usually performed with the subject in the left lateral position. In this case, there is a concern that the endoscope guided to the palate side in the oral cavity by the raised portion may shift in the direction of gravity.

  Therefore, the mouthpiece of the present invention includes the bay entry portion on the palate side of the esophagus side end portion of the guide portion, and the endoscope is displaced in the direction of gravity by holding the endoscope by the bay entry portion. This can be prevented.

  In the mouthpiece of the present invention, the guide portion includes a grip portion protruding outward from the lip side end portion of the cylindrical portion, and the guide portion rotates relative to the cylindrical portion by operating the grip portion. It is preferable that it is movable and can be locked at a predetermined position with respect to the cylindrical portion.

  Oral insertion of the endoscope is usually performed with the subject in the left-side position as described above, but may also be performed in the right-side position depending on the necessity of the examination. In addition, it may be necessary to change the posture of the subject during the examination. In such a case, once the endoscope is removed and reinserted, the burden on the subject may increase.

  Therefore, the mouthpiece of the present invention operates the grip portion to rotate the guide portion and locks it at a predetermined position with respect to the cylindrical portion. By doing in this way, the direction of the endoscope can be changed without removing the endoscope once and reinserting it, thereby preventing an increase in the burden on the subject.

Explanatory sectional drawing which shows the usage condition of the mouthpiece of this invention. The front view which shows the structure of one Embodiment of the mouthpiece of this invention. III-III line explanatory sectional drawing of FIG. The top view seen from the arrow direction of FIG. Explanatory sectional drawing which shows the structure of other embodiment of the mouthpiece of this invention. The front view which shows the structure of other embodiment of the mouthpiece of this invention. VII-VII line explanatory sectional drawing of FIG. Operation | movement explanatory drawing of the mouthpiece shown in FIG.6 and FIG.7.

  Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

  As shown in FIG. 1, the mouthpiece 1 of the present embodiment is used to insert the endoscope 2 into the oral cavity B from the lip A side of the subject and guide the endoscope 2 to the esophagus C. Here, in the oral cavity B, there is a palate E separating the oral cavity B and the nasal cavity D, and a tongue F is opposed to the palate E. The esophagus C and the trachea G open at the junction of the oral cavity B and the nasal cavity D, and the tongue base H is between the esophagus C and the tongue F.

  As shown in FIG. 2, the mouthpiece 1 includes a flange portion 5 that extends outward from the periphery of the opening 4 at the lip side end portion of the tubular portion 3, and fixing belts ( A belt insertion hole 6 through which an unillustrated) is inserted is formed. Further, on the side of the belt insertion hole 6, there is provided a locking projection 7 which is pushed into the adjustment hole of the fixing belt and locks the fixing belt.

  The diameter of the opening 4 can be appropriately adjusted according to the outer diameter of the endoscope 2, and can be adjusted within a range of, for example, 13 to 16 mm. The flange portion 5 has a size capable of covering the lip A, and does not give a discomfort to the subject by hitting the gums. Further, the belt insertion hole 6 is formed in a size that allows the saliva suction tube (not shown) to be inserted into the oral cavity B while the fixing belt is inserted. By setting the belt insertion hole 6 to such a size, the saliva accumulated in the oral cavity B during the endoscopic examination can be easily sucked by the saliva suction tube.

  As shown in FIG. 3, the cylindrical portion 3 is fitted with a guide member 8 on the inner peripheral side, and has a plate-shaped pressing tongue 10 extending outward from the esophageal end portion 9 on the tongue F side. It has. The guide member 8 is a straight tube (straight cylindrical body) and includes a raised portion 12 that protrudes from the tongue F side to the palate E side at the esophageal side end portion 11.

  As shown in FIG. 1, the raised portion 12 guides the endoscope 2 inserted on the inner peripheral side of the guide member 8 from the opening 4 of the cylindrical portion 3 and curves toward the palate E side in the oral cavity B. In addition, a gentle slope is provided from the esophagus side end 11 side toward the inside. In addition, the height of the raised portion 12 can be adjusted as appropriate according to the outer diameter of the endoscope 2, and can be, for example, in the range of 1.0 to 5.0 mm.

  Moreover, the guide member 8 is provided with the bay part 13 as shown in FIG. The bay entrance 13 is composed of a narrow bay mouth opening at the esophageal side end 11 of the guide member 8 and a wide portion at the back thereof. As shown in FIG. 1, the bay entrance 13 holds the endoscope 2 guided to the palate B side by the raised portion 12 in the wide portion, and prevents the endoscope 2 from shifting in the direction of gravity.

  Further, the guide member 8 may be configured not to include the bay portion 13 as shown in FIG.

  As shown in FIGS. 6 and 7, the mouthpiece 1 is configured such that the guide member 8 is rotatable through the tubular portion 3, and the opening 4 at the lip side end of the tubular portion 3. It may be set as the structure provided with the holding part 14 which protrudes outward. In this case, the guide member 8 includes a protrusion 15 on the outer peripheral surface, and the protrusion 15 is engaged with any one of the locking portions 16a, 16b, and 16c provided around the opening 4 of the cylindrical portion 3. By combining, the cylindrical portion 3 is locked at a predetermined position. The locking portions 16a, 16b, and 16c are provided at an interval of, for example, 30 to 60 ° at the central angle of the opening 4, and with the locking portion 16a as the center, the locking portion 16b on the left and the locking portion on the right 16c is provided. In FIG. 6, the three locking portions 16a, 16b, and 16c are provided, but the number of the locking portions may be further increased.

  In the mouthpiece 1 shown in FIGS. 6 and 7, as shown in FIG. 8, the gripping portion 14 is gripped, and the engagement between the projection 15 and any of the locking portions 16 a, 16 b, and 16 c is released. After the guide member 8 is pulled out, the guide member 8 is rotated with respect to the tubular portion 3. Then, after rotating to a new locking position, the guide member 8 is pushed into the cylindrical portion 3 to engage the protrusion 15 with one of the locking portions 16a, 16b, 16c, thereby guiding the guide. The member 8 is locked with respect to the cylindrical portion 3.

  For example, as an initial state, when the projection 15 is engaged with the central locking portion 16a, the grip 14 is gripped until the engagement between the projection 15 and the locking portion 16a is released. After the guide member 8 is pulled out, the guide member 8 is rotated left or right with respect to the cylindrical portion 3. And after rotating the projection part 15 to the position latched by either of the latching | locking parts 16b and 16c, the guide member 8 is pushed in in the cylindrical part 3, and the projection part 15 is made into the latching | locking part 16b, Engage with any one of 16c.

  According to the mouthpiece 1 shown in FIG. 6 and FIG. 7, when the oral insertion of the endoscope 2 is performed in the right lateral position, or the posture of the subject during the examination regardless of the left lateral position and the right lateral position. Can be changed without removing the endoscope 2 once and performing re-insertion.

  DESCRIPTION OF SYMBOLS 1 ... Mouthpiece, 2 ... Endoscope, 3 ... Cylindrical part, 8 ... Guide member, 12 ... Raised part, 13 ... Bay entry part, 14 ... Grasping part.

Claims (3)

By detouring the tongue base by curving the cylindrical part inserted into the oral cavity of the subject and the endoscope fitted inside the cylindrical part and inserted on the inner peripheral side to the palate side in the oral cavity In the mouthpiece comprising a guide part that guides to the esophagus,
The guide portion has a straight tube shape and includes a raised portion that protrudes from the lingual side of the esophageal end portion toward the palate side, and guides the endoscope along the raised portion to bend toward the palate side in the oral cavity. A mouthpiece characterized by.   2. The mouthpiece according to claim 1, wherein the guide portion includes a bay portion where the endoscope guided to the palate side in the oral cavity by the raised portion is held on the palate side of the esophagus side end portion. A featured mouthpiece.   The mouthpiece according to claim 1 or 2, wherein the guide portion includes a grip portion protruding outward from a lip side end portion of the cylindrical portion, and the cylindrical portion is operated by operating the grip portion. A mouthpiece characterized in that it can be rotated with respect to the cylindrical portion and can be locked at a predetermined position with respect to the cylindrical portion.

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