JP4536699B2 - Endoscope hood - Google Patents

Description

  The present invention relates to an endoscope hood that includes a cleaning liquid supply tube that is attached to the distal end of an endoscope used in, for example, endoscopic submucosal dissection (ESD) and that sprays a cleaning liquid to clean an affected area.

  Conventionally, a cylindrical main body having an outer fitting portion fitted to the distal end of the endoscope, a space forming portion provided at the distal end of the endoscope mounting portion and having a through hole formed in the peripheral wall, and a space forming portion 2. Description of the Related Art An endoscope hood is known that includes a cleaning liquid supply tube that ejects from a distal end a cleaning liquid that is inserted into and fixed to a through-hole and that cleans an affected area from the tip, and that cleans the affected area with the cleaning liquid sprayed from the cleaning liquid supply tube. (For example, refer to Patent Document 1).

In the endoscope hood, there is a possibility that the cleaning liquid ejected from the cleaning liquid supply tube or the liquid such as blood flowing out from the affected part may accumulate in the space forming part. When liquid accumulates in the space forming part, there is a problem that the visual field of the endoscope is deteriorated.
Japanese Patent No. 3790866

  The present invention has been made in view of the above points, and an object thereof is to provide an endoscope hood that makes it difficult for liquid to accumulate in a space forming portion and makes it easy to maintain the visual field of an endoscope in a good state. .

In order to achieve the above object, the present invention includes a cylindrical main body that is detachably fitted to the distal end of an endoscope, and a cleaning liquid supply tube that is connected to the cylindrical main body and supplies a cleaning liquid for cleaning the affected area. In the endoscope hood, the cylindrical main body is provided with an outer fitting portion that is fitted on the distal end of the endoscope and a distance between the distal end of the endoscope and the affected portion that is provided at the distal end of the outer fitting portion. A space forming portion that forms a space for maintaining the space, and penetrates the peripheral wall of the space forming portion from the inside to the outside in the radial direction and inclined rearwardly, and into the space forming portion. A plurality of through holes for discharging the accumulated liquid are formed, and the inner peripheral surface of the space forming portion is a tapered surface that gradually increases in diameter toward the front .

  According to this invention, since a plurality of through holes are formed in the peripheral wall of the space forming portion, liquids such as blood and cleaning liquid that have entered the space forming portion flow out of the through holes. Thereby, it is possible to suppress the liquid from being accumulated in the space forming portion, and to easily maintain the visual field of the endoscope in a good state. Further, since the through hole is formed so as to penetrate through the peripheral wall of the space forming portion from the inside toward the radially outer side and in the rearward direction, the distal end of the endoscope faces upward. Even in the case of facing, the liquid in the space forming part is easily discharged from the through hole.

In the present invention, there is a tapered surface that the inner circumferential surface of the space forming part is gradually enlarged toward the other party. If comprised in this way, it will become easy for the liquid in a space formation part to flow away ahead. For this reason, it is easy to keep the liquid in the space forming portion and to maintain the field of view of the endoscope in a good state.

  Moreover, in this invention, it is preferable that the opening part inside the said through-hole is located in the location in which the front-end | tip of an endoscope is located when an endoscope is inserted. The liquid in the space forming part tends to accumulate at the tip of the endoscope. For this reason, by configuring as described above, the liquid accumulated at the distal end of the endoscope can easily flow into the through hole, and the liquid in the space forming portion can be efficiently discharged.

  An embodiment of an endoscope hood according to the present invention will be described with reference to FIG. FIG. 1 is an explanatory sectional view showing an endoscope hood according to this embodiment.

  The endoscope hood 1 according to the embodiment of the present invention has an outer fitting portion 31 that is detachably fitted to the distal end of the endoscope 2, and a constant distance from the distal end of the endoscope 2 to the affected portion. A cylindrical main body 3 having a space forming portion 32 for facilitating treatment and treatment with forceps or the like inserted into a channel of the endoscope 2 is provided. The inner diameter of the space forming portion 32 is formed larger than the inner diameter of the outer fitting portion 31. This facilitates medical practice without narrowing the field of view of the endoscope 2 fixed to the outer fitting portion 31 by the space forming portion 32.

  A plurality of through holes 32a are formed in the circumferential wall of the space forming portion 32 at equal intervals in the circumferential direction, penetrating from the inside to the outside in the radial direction and inclined rearward. In the drawing, the through-hole 32a is shown as having a straight shape, but other shapes may be used, for example, a tapered shape (a trumpet shape) that gradually increases in diameter from the inside toward the outside in the radial direction. In addition, the inner peripheral surface of the space forming portion 32 is a tapered surface 32b that gradually increases in diameter toward the front.

  The space forming portion 32 is provided with an insertion hole 4 penetrating in the axial direction from the rear toward the tapered surface 32b. A cleaning liquid supply tube 5 for supplying a cleaning liquid is inserted into and fixed to the insertion hole 4. The cleaning liquid supplied from the cleaning liquid supply tube 5 by a syringe or the like is ejected forward to clean the affected part.

  Next, a method for using the endoscope hood 1 of the present embodiment will be described.

  First, the outer fitting portion 31 of the endoscope hood 1 is fitted on the distal end of the endoscope 2. The cleaning liquid supply tube 5 is fixed to the outer peripheral surface of the endoscope 2 with a tape or the like. Then, the endoscope 2 is inserted into the body through a body hole such as a patient's mouth. When the distal end of the endoscope 2 approaches the affected area, the cleaning liquid is supplied from the cleaning liquid supply tube 5 and the cleaning liquid is ejected toward the affected area.

  Then, the distal end of the endoscope hood 1 is pressed around the affected area so as to wrap the affected area, and treatment / treatment is performed with forceps or the like inserted into the channel of the endoscope 2. Since the distance between the distal end of the endoscope 2 and the affected part is maintained constant by the space forming part 32, the medical staff can easily perform the treatment / treatment of the affected part. At this time, liquid such as blood or cleaning liquid may accumulate in the space forming portion 32, but the blood or the like accumulated from the through hole 32a formed in the peripheral wall of the space forming portion 32 can be discharged, and the endoscope The field of view of 2 can be kept good.

  According to the endoscope hood 1 of the present embodiment, since the through hole 32a is formed in the peripheral wall of the space forming part 32, the liquid in the space forming part 32 flows out from the through hole 32a. Moreover, since the inner peripheral surface of the space forming portion 32 is a tapered surface 32b that gradually increases in diameter toward the front, the liquid in the space forming portion 32 easily flows down to the front. Thereby, it can suppress that a liquid accumulates in the space formation part 32, and can make it easy to maintain the visual field of the endoscope 2 in a favorable state.

  Further, since the through hole 32a is inclined toward the rear of the endoscope 2, as shown in FIG. 1B, the through hole 32a is provided even when the distal end of the endoscope 2 faces upward. From this, the liquid in the space forming part 32 is easily discharged.

  Further, the liquid in the space forming portion 32 tends to accumulate at the distal end of the endoscope 2, but the distal end of the endoscope 2 is positioned in the opening inside the through hole 32a when the endoscope 2 is mounted. Since the liquid is accumulated at the position, the liquid accumulated at the distal end of the endoscope 2 can easily flow into the through hole 32a, and the liquid in the space forming portion 32 can be efficiently discharged.

Explanatory sectional drawing which shows the hood for endoscopes of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Endoscope hood, 2 ... Endoscope, 3 ... Cylindrical main body, 31 ... Outer fitting part, 32 ... Space formation part, 32a ... Through-hole, 32b ... Tapered surface, 4 ... Insertion hole, 5 ... Cleaning liquid Supply tube.

Claims (2)

In an endoscope hood comprising: a cylindrical main body that is detachably fitted to the distal end of an endoscope; and a cleaning liquid supply tube that supplies a cleaning liquid that is connected to the cylindrical main body and cleans the affected area.
The cylindrical main body forms an outer fitting portion that is fitted to the distal end of the endoscope, and a space that is provided at the distal end of the outer fitting portion to maintain a constant distance between the distal end of the endoscope and the affected portion. And a space forming portion to
A plurality of through-holes are formed in the peripheral wall of the space forming portion so as to penetrate from the inside toward the radially outer side and incline backward, and discharge the liquid accumulated in the space forming portion,
An endoscope hood, wherein an inner peripheral surface of the space forming portion is a tapered surface that gradually increases in diameter toward the front . 2. The endoscope hood according to claim 1, wherein the opening inside the through hole is located at a position where a distal end of the endoscope is positioned when the endoscope is attached.

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