JP3123801U - Endoscope holder - Google Patents

Abstract

[PROBLEMS] To provide a simple structure that allows a child or infant to easily open their mouth and visually observe the mouth in the mouth when observing the mouth of a child or infant with an endoscope. An endoscope holder is provided. A breast-shaped hollow mouthpiece 20 having a transparent convex portion 50 at the center and protecting the distal end 211 of the endoscope, and an open bottom portion 12 are provided. A baby bottle model 10 to which the mouthpiece 20 is attached, and the mouthpiece 20 having the tip 211 of the endoscope in contact with the convex portion 50 is attached to the baby bottle model 10 and the sucker attached. The mouth 20 is added to a patient who is inspecting the oral cavity. And it has the bottom part 61 and the opening end 62, is equipped with the transparent cylindrical member 60 which protects the front-end | tip 211 of an endoscope, and the suction port 20 has the circular hole 21 in the center, Comprising: Alternatively, the cylindrical member 60 having the tip 211 thereof in contact with the bottom portion 61 may be inserted into the circular hole 21, and the convex portion 50 may be formed by the bottom portion 61 of the cylindrical member protruding from the circular hole 21.
[Selection] Figure 2

Description

  The present invention relates to an endoscope holder that is inserted into the oral cavity while protecting the distal end of the endoscope.

When a doctor examines the oral cavity, such as the larynx and pharynx, it is common to operate a metal or wooden tongue depressor with one hand, and observe while illuminating a flashlight with the other hand. However, there is a problem that the details cannot be clearly observed if the patient is inspected while illuminating the oral cavity. Therefore, an intraoral observation fiberscope that illuminates the inside of the oral cavity with illumination light guided from behind by an optical fiber and forms an illuminated intraoral image using an optical member such as an optical fiber has been proposed. (See Patent Document 1). If this method is used, there is an advantage that even a minute part in the oral cavity can be clearly observed without using both hands, but in order to obtain a clear image, it is necessary to use a more advanced optical member, There is a problem that the fiber scope becomes expensive.
On the other hand, in recent years, miniaturization and high sensitivity of CCD cameras have progressed, and a video scope that incorporates a CCD camera and displays an image taken with the CCD camera on a monitor screen, or a video scope with a video scope. Technology to obtain clear and bright images by using digital technology, such as the combination of recorders and television receivers, leaving records, and developing intraoral video systems designed to allow many people to monitor Remarkably progressing.
However, when actually applying them to the medical site and inspecting the inside of the oral cavity, a holder for a small-sized television camera for intraoral endoscopy that facilitates operability has been proposed due to the inconvenience of moving operation inside and outside the mouth. (See Patent Document 2).
Japanese Utility Model Publication No. 60-69102 Japanese Utility Model Publication No. 63-302818

Today, endoscopes such as fiberscopes and videoscopes are becoming available at a relatively low cost, and are expected to become increasingly popular in the medical field. However, it is difficult to hold the distal end portion of the endoscope in the mouth or to boil and disinfect the distal end portion in the mouth because of the structure and material and safety and health reasons. When the inside of the oral cavity is examined by using a mouthpiece, it is necessary to keep the mouth open or use a mouthpiece or the like. On the other hand, when the patient who examines the oral cavity is an infant or child, the mouth is often closed when an unfamiliar object such as the tip of the endoscope is brought close to it, and the endoscope must be inserted into the oral cavity. It needs patience and ingenuity. Moreover, even if the mouth is once opened, the mouth is closed in a short time, and there is a possibility that the tip of the inserted endoscope may be bitten. Furthermore, it is sensitive to foreign matter, and the mouthpiece is often difficult to put on itself.
In view of the above circumstances, the present invention makes it possible for children and infants to easily open their mouths and observe the mouth with their mouths open when examining the mouths of children and infants with an endoscope. An object of the present invention is to provide an endoscope holder having a simple structure.

An endoscope holder according to the present invention has a transparent mouth portion at the center, a hollow mouthpiece having a breast shape that protects the distal end of the endoscope, and an open bottom portion. A baby bottle model to be mounted; the mouthpiece in which the tip of the endoscope is brought into contact with the convex portion is attached to the baby bottle model; and the mouthpiece is inspected in the oral cavity It is characterized by having the patient hold it.
In this way, a mouthpiece that protects the tip of the endoscope is formed using a transparent member that is safe to be added to the mouth, and the mouthpiece is attached to a miniature baby bottle, so the inside of the oral cavity is inspected. The infant holds the baby bottle with his / her hand without feeling uncomfortable, and adds a mouthpiece in which the tip of the endoscope is accommodated in the mouth. Therefore, it is possible to smoothly perform an oral examination without causing the infant to feel uncomfortable.
Also, it has a bottom and an open end, and includes a transparent cylindrical member that protects the tip of the endoscope, and the mouthpiece has a circular hole in the center, and the tip of the endoscope is at the bottom. It is also preferable that the cylindrical member brought into contact is inserted into the circular hole, and the convex portion is formed by the bottom portion of the cylindrical member protruding from the circular hole, and the cylindrical member has an outer diameter on the bottom side. It is also preferable to have a taper that gradually decreases.
Thus, if the convex part of a mouthpiece part is formed with a cylindrical member, it will be easy to fix the front-end | tip of an endoscope, and protection will also become easy. Further, if the cylindrical member is provided with a taper, the length of the bottom protruding from the circular hole is limited, so there is no possibility that the bottom hits the throat or pharynx when the infant holds the mouthpiece.
Moreover, it is preferable that the baby bottle model is provided with a handle to be grasped by a patient who visually observes the inside of the oral cavity.
If a miniature baby bottle has a handle, infants can easily hold it.
Furthermore, it is also preferable to include a lid having a locking portion for locking the mouthpiece and screwed onto the baby bottle model.
If the mouthpiece is locked to the lid, it is easy to remove the lid and disinfect the mouthpiece and the tubular member.

An endoscope holder according to the present invention includes a transparent cylindrical member having a bottom portion and an open end and protecting the distal end of the endoscope, and a food sample having a through-hole through which the cylindrical member is inserted and removed. And inserting the cylindrical member with the tip of the endoscope in contact with the bottom into the through-hole, and holding the bottom of the cylindrical member protruding from the through-hole to the patient who observes the inside of the oral cavity. It is characterized by.
In this way, a food sample, for example, a sample of corn-filled soft cream preferred by children, is provided with a through hole, and the bottom of the transparent cylindrical member in which the tip of the endoscope is accommodated protrudes from the through hole. A child who looks inside can hold the food sample in his / her hand without feeling uncomfortable, and put the bottom part in which the tip of the endoscope is contained in his / her mouth. Therefore, it is possible to smoothly perform an oral examination without causing the infant to feel uncomfortable. Furthermore, repeated use is easy by removing only the cylindrical member and disinfecting.
In addition, the food sample has a regulating member that regulates the outer diameter of the passing material at the inner edge of the through hole on the side from which the bottom protrudes, and the cylindrical member is predetermined from the bottom of the cylindrical member. It is also preferable to have an auxiliary member that thickens the outer diameter at the position, and the food sample has a regulating member that regulates the outer diameter of the passing material on the inner edge of the through hole on the side from which the bottom protrudes It is also preferable that the cylindrical member has a taper in which the outer diameter on the bottom side gradually decreases.
In this way, a regulating member is provided on the inner edge of the through hole, and an auxiliary member that increases the outer diameter is provided at a predetermined position of the cylindrical member, or a regulating member is provided on the inner edge of the through hole, If a taper having a smaller diameter on the bottom side is provided, the length of the bottom protruding from the through hole is limited, so that when the infant holds the mouthpiece, there is no possibility that the bottom hits the throat or pharynx.

  According to the endoscope holder of the present invention, since the outer shape is preferred by children and infants, the mouth can be easily opened and the inside of the oral cavity can be inspected with an endoscope while being held in the mouth. Therefore, oral examination of children and infants becomes easy. Moreover, since it is easy to attach and detach the part added to the mouth, it can be used repeatedly by performing boiling sterilization or the like.

(First embodiment)
FIG. 1 is a schematic configuration diagram illustrating an example of an endoscope applied to the endoscope holder according to the first embodiment.
As shown in FIG. 1, the endoscope 200 used in this embodiment includes a head unit 210, an eyepiece unit 230, an operation unit 220, and a flexible cord 240. The head unit 210 has a small-diameter tip 211 that radiates light and obtains a subject image in the oral cavity irradiated with the light, and a large-diameter rear end 212 connected to the flexible cord. The flexible cord 240 optically bends the head unit 210, the eyepiece unit 230, and the operation unit 220, and transmits light from a light source that does not appear in the drawing to the small-diameter tip 211. Then, the subject image acquired by the small-diameter tip 211 is transmitted to the eyepiece unit 230. The head unit 210 and the flexible cord 240 are detachably connected by a connector, and the eyepiece unit 230 and the operation unit 220 and the flexible cord 240 are fixedly connected. The eyepiece unit 230 can look into the enlarged or reduced object image with the naked eye using a built-in lens that does not appear in the figure. The operation unit 220 can manually operate blinking of a light source that transmits light to the tip 211.
The endoscope of the present embodiment uses a fiberscope that directly views a subject image with the eyepiece unit 230. However, the endoscope is not necessarily a fiberscope, and the subject image is photographed with a CCD camera. A video scope capable of observing the recorded digital image on a monitor screen and recording it in a memory may be used.
2 to 4 are a front view, a side view, and a plan view, respectively, of the endoscope holder shown as the first embodiment. The front view and the plan view are a state in which the endoscope is not set, a side view. The figure shows a state where the endoscope is set.
As shown in FIGS. 2 to 4, the endoscope holder 100 of the present embodiment is equipped with a miniature baby bottle 10 having an open bottom, a breast-shaped hollow mouthpiece 20, and a mouthpiece 20. A lid 30 screwed into the miniature baby bottle 10, a handle 40 held by the patient, and a transparent tubular member 60 that houses the head portion 210 of the endoscope and protects the distal end 211. ing.
Here, the miniature baby bottle 10 can be formed by extrusion or injection blow molding using a thermoplastic resin such as polyethylene, polypropylene, vinyl chloride resin, polystyrene, or ABS resin. On the other hand, the mouthpiece 20 is required to be safe when added to the mouth and to be boiled and disinfected, and polypropylene, polystyrene, ABS resin, methacrylic resin, or the like can be used. In addition, the cylindrical member 60 that protects the distal end of the endoscope is further required to have light transmission properties, be undamaged even when bitten, and not to be deformed. Methacrylic resin, borosilicate Glass or the like can be used. However, the above-described materials are examples, and are not necessarily limited thereto, and other materials may be used as long as the requirements are satisfied.
The miniature baby bottle 10 has a cylindrical shape having a mouth portion 11 and a bottom portion 12. The mouth portion 11 has a screw thread for rotating and screwing the lid 30, and the bottom portion 12 has a transparent thread. There is an opening (not shown) for inserting the tubular member 60. Further, the mouth portion 11 has two grips 40 at symmetrical positions, and the patient (infant) can hold the mouthpiece 20 by holding the grip 40 with both hands.
As shown in FIG. 4, the mouthpiece 20 is made of a hollow member formed in a breast shape, and a circular hole 21 is provided in the center. The lid 30 is formed in a circular shape, and has a large opening 31 through which the mouthpiece 20 protrudes and a locking portion 32 that locks the mouthpiece 20 around the opening 31 at the center.
The maximum diameter of the breast-shaped mouthpiece 20 is larger than the diameter of the lid opening 31 and smaller than the inner diameter of the lid 20. Therefore, by fitting the mouthpiece 20 from the back side of the lid 30 screwed into the miniature baby bottle 10, the locking portion 31 around the opening 31 is locked to the portion of the maximum diameter of the mouthpiece 20, The mouthpiece 20 is fixed to the lid 30. Therefore, if the lid 30 on which the mouthpiece 20 is locked is screwed to the miniature baby bottle 10, the mouthpiece 20 can be attached to the miniature baby bottle 10.
FIG. 5 is a front view of a transparent cylindrical member used for the endoscope holder of the present embodiment.
As shown in FIG. 5, the cylindrical member 60 is a transparent hollow container having one rounded bottom 61 and the other open end 62. The tubular member 60 of the present embodiment is provided with a taper in which the outer diameter is smaller on the bottom 61 side in the longitudinal direction, and the outer diameter is uniform on the opening end 62 side in the longitudinal direction. ing. Further, the outer diameter of the bottom portion 61 is smaller than the diameter of the circular hole 21, and the outer diameter of the opening end 62 is larger than the diameter of the circular hole 21. Therefore, if the cylindrical member 60 is inserted into the circular hole 21 from the bottom 61, a part of the cylindrical member 60 on the bottom 61 side protrudes from the circular hole 21.
As shown in FIGS. 2 to 4, when the cylindrical member 60 is inserted from the bottom portion 61 through the bottom portion 12 of the miniature baby bottle 10 and pushed into the circular hole 21, the cylindrical member 60 is inserted into the circular hole 21. The bottom portion 61 protrudes from the bottom to form the convex portion 50 of the present invention. At that time, due to the taper of the tubular member 60, the length of the bottom 61 protruding is limited.
Here, the length that the bottom 61 side protrudes from the mouthpiece 20 can be arbitrarily set by the diameter of the circular hole 21 and the taper on the longitudinal bottom 61 side of the tubular member 60. However, if the length is too long, an infant or the like will add the bottom 61 to the mouthpiece 20 and it will be difficult to observe in the oral cavity, so it is preferable to set the length to about 10 mm or less. If the maximum diameter of the mouthpiece 20 is made larger than the nipple that an infant usually holds in the mouth, the bottom 61 hits the throat or larynx when the child as a patient puts the mouthpiece 20 in the mouth. It is not.
When performing intraoral inspection using the endoscope holder 100 of the present embodiment, first, as shown in FIG. 2, the head portion 210 of the endoscope has a small-diameter tip 211 that emits light. Push into the cylindrical member 60 until it contacts the bottom 61. Then, the large-diameter rear end 212 of the head portion 210 is fitted into the opening end 62 so as to be fixed to the tubular member 60. Next, the bottom 61 of the transparent tubular member 60 in which the head portion 210 of the endoscope is accommodated is projected from the circular hole 21 of the mouthpiece 20 engaged with the lid 30. Then, the lid 30 with the bottom 61 protruding from the mouthpiece 20 is screwed into the miniature baby bottle 10. Next, as shown in FIG. 3, the flexible cord 240 of the endoscope is connected to the head unit 210, and the preparation for visual inspection in the oral cavity is completed.
When the preparation is completed, the patient holds the baby bottle handle 40 with both hands and holds the mouthpiece 20 in the mouth. When the patient holds the mouthpiece 20, the operation unit 220 of the endoscope is operated to emit illumination light from the small-diameter tip 211, and the illuminated intraoral image is inspected by the eyepiece unit 230, Identify symptoms. If necessary, the viewing angle can be changed by swinging the bottom 61 of the cylindrical member.
Here, the bottom 61 of the cylindrical member is swung to change the viewing angle. However, the operation of the operation unit 220 can change the direction of the small-diameter tip 211 or operate the zoom lens. An endoscope may be used, or an endoscope whose viewing angle can be changed by replacing the head unit 210 may be used.
In this way, if the appearance of the endoscope holder 100 is a miniature baby bottle, the infant who is a patient can grasp the endoscope holder 100 with his / her hands and hold the mouthpiece 20 in his / her mouth. The inside of the oral cavity can be inspected easily and sufficiently from the outside. In addition, if an endoscope having a sufficiently long flexible cord 240 is used, it is easy to make a diagnosis while being held by the mother. Furthermore, since the cylindrical member 60 and the mouthpiece 20 added to the mouth can be removed and easily boiled and disinfected, it can be used repeatedly.
In the present embodiment, the cylindrical member 60 has a taper, and the bottom 61 with a limited length protruding from the circular hole 21 of the mouthpiece 20 constitutes the convex portion 50 that protects the distal end of the endoscope. . However, a taper for limiting the protruding length is not necessarily required. The outer diameter is made uniform, and the outer diameter is increased by winding an adhesive tape or the like around a predetermined position on the bottom 61 side so that it cannot pass through the circular hole 21. The length protruding from the circular hole 21 may be limited by fixing the predetermined position on the bottom side to the circular hole 21. In that case, the cylindrical member 60 may be fixed by being bonded to the mouthpiece 20, or may be integrally formed and fixed.
The cylindrical member 60 is not always necessary. For example, the miniature baby bottle 10 is formed as a solid shape having a through hole through which the head portion 210 of the endoscope passes, while the mouthpiece is made of a transparent member. 20 and the convex part 50 may be integrally formed, and the head part 210 of the endoscope may be accommodated therein.

(Second Embodiment)
The endoscope holder of the second embodiment is similar to the first embodiment in that a cylindrical member that protects the distal end of the endoscope is used, but the body is not a miniature baby bottle but a food sample. And the outer diameter of the cylindrical member is uniform and thick.
6 to 8 are a front view, a side view, and a plan view, respectively, of the endoscope holder shown as the second embodiment. The front view and the plan view are a state in which the endoscope is not set, a side view. The figure shows a state where the endoscope is set.
As shown in FIGS. 6 to 8, the endoscope holder 110 of the present embodiment has a through-hole 115 and houses a food sample 111 having a cone-containing soft cream and a head portion 210 of the endoscope. A transparent cylindrical member 60 that protects the tip 211.
Here, the food sample 111 with corn-filled soft ice cream is made of corn-filled soft cream using, for example, silicon, and plastic such as vinyl chloride is poured into the finished silicon mold to look just like corn-filled soft cream. The molded product may be colored by using a brush or the like, or plastics colored in the colors of corn and soft cream may be formed by injection molding. On the other hand, the cylindrical member 60 that protects the distal end 211 of the endoscope is safe when held in the mouth, can be boiled and disinfected, has light transparency, and does not get damaged when bitten. It is an essential requirement that there is no fear, for example, methacrylic resin, borosilicate glass, or the like can be used. However, the material shown here is an example, and is not necessarily limited thereto, and other materials may be used as long as the requirements are satisfied.
As shown in FIG. 5, the cylindrical member 60 is a transparent hollow container, one of which is a rounded bottom 61 and the other of which is an open end 62. However, since the cylindrical member 60 of this embodiment does not have the taper on the bottom 61 side as described in the first embodiment, the outer diameter is uniform. In addition, the endoscope holder 110 according to the present embodiment directly holds the bottom 61 instead of the mouthpiece 20 according to the first embodiment. Therefore, the endoscope holder 110 has a larger outer diameter as compared with the bottom according to the first embodiment. A shaped member is used. Further, an auxiliary member 63 (not shown) that restricts the passage of the through hole 115 is attached to a predetermined position on the bottom 61 side of the cylindrical member 60.
Here, the auxiliary member 63 may be, for example, an adhesive tape wound around the tubular member 60 in order to increase the outer diameter, or may be a ring-shaped member attached to the tubular member 60. In addition, the cylindrical member 60 of the present embodiment is configured such that the outer diameter of the bottom portion 61 and the outer diameter of the opening end 62 are the same. The bottom 61 itself may be spherical, and the diameter of the bottom end 61 may be larger than the outer diameter of the opening end 62 so that the distal end 211 of the endoscope is accommodated in a narrow convex portion. If the cylindrical member 60 is configured in such a manner, the child, who is a patient, does not hit the throat or larynx when the bottom 61 is held in the mouth.
As shown in FIG. 6, the through-hole 115 of the food sample 111 has an inner diameter larger than the outer diameter of the cylindrical member 60, and a regulating member 116 (not shown in the figure) is installed on the top inner edge of the soft cream. Yes. The inner diameter of the regulating member 116 is smaller than the outer diameter of the auxiliary member 63 attached to the cylindrical member 60.
As shown in FIG. 8, the top side surface of the soft ice cream of the endoscope holder 110 of the present embodiment has a through hole 115 slightly below the center, and a regulating member 116 is provided at the edge of the through hole 115. Is installed. Therefore, when inserted into the cone side of the through-hole 115 from the bottom 61 of the transparent cylindrical member 60 having the rounded bottom 61 and the open end 62 shown in FIG. Since the regulated member 116 regulates the passage of the auxiliary member 63, the length of the bottom 61 side protruding from the top side of the soft cream is limited.
Thus, if the length which the bottom part 61 side of a cylindrical member protrudes from the food sample 111 is restrict | limited, there is no possibility that the bottom part 61 added to the mouth may hit a child's pharynx, a larynx, etc.
When performing an intraocular inspection using the endoscope holder 110 of the present embodiment, first, as shown in FIG. 6, the head portion 210 of the endoscope has a small-diameter tip 211 that emits light. Push into the cylindrical member 60 until it contacts the bottom 61. And the bottom part 61 of the cylindrical member in which the head part 210 of the endoscope is accommodated is inserted into the through hole 115 of the food sample 111 from the cone side and protrudes to the top side of the soft cream. Next, as shown in FIG. 7, the flexible cord 240 of the endoscope is connected to the head unit 210, and the preparation for visual inspection in the oral cavity is completed.
When the preparation is completed, the patient holds the endoscope holder 110 that looks just like soft ice cream and holds the bottom 61 of the cylindrical member in the mouth. When the patient holds the bottom 61, the operation unit 220 is operated to emit illumination light from the tip 211 of the head unit 210, and the illuminated intraoral image is inspected by the eyepiece unit 230 to identify the affected part and symptoms. .
Here, also in the endoscope holder 110 of the present embodiment, as in the first embodiment, the endoscopic range by the endoscope is changed by swinging the bottom 61 of the cylindrical member or the operation unit 220. Can be used to swing the tip 211 and adjust the viewing angle to change the scope of the endoscopic examination.
Thus, since the outer shell of the endoscope holder 110 is a cone-containing soft cream, the child who is a patient happily grabs it and holds the protruding bottom 61 in the mouth without a sense of incongruity. Can be examined easily. Moreover, since the cylindrical member 60 added to the mouth can be extracted from the through-hole 115 and boiled and sterilized, it can be used repeatedly.
The endoscope holder 110 according to the present embodiment limits the passage of the auxiliary member 63 through the regulating member 116 of the through hole 115 by attaching the auxiliary member 63 to the cylindrical member 60, and the length by which the bottom portion 61 protrudes. However, as described in the first embodiment, a taper in which the outer diameter on the bottom side of the cylindrical member 60 gradually decreases is provided, and the length by which the bottom 61 protrudes from the through hole 115 by the regulating member 116 is provided. Can also be restricted.

It is a schematic block diagram which shows an example of the endoscope applied to the endoscope holder of 1st Embodiment. It is a top view of an endoscope holder shown as a 1st embodiment. It is a front view of an endoscope holder shown as a 1st embodiment. It is a side view of an endoscope holder shown as a 1st embodiment. It is a front view of the transparent cylindrical member used for the endoscope holder of this embodiment. It is a top view of an endoscope holder shown as a 2nd embodiment. It is a front view of the endoscope holder shown as 2nd Embodiment. It is a side view of the endoscope holder shown as 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Miniature baby bottle 11 Mouth part 12 Bottom part 20 Suction mouth 21 Circular hole 30 Lid 31 Opening 32 Locking part 40 Handle 50 Convex part 60 Cylindrical member 61 Bottom part 62 Open end 63 Auxiliary member 100, 110 Endoscope holder 115 Through Hole 116 Restriction member 200 Endoscope 210 Head portion 211 Small diameter front end 212 Large diameter rear end
220 Operation unit 230 Eyepiece unit 240 Flexible cord

Claims (8)

A breast-shaped hollow mouthpiece having a transparent convex portion at the center and protecting the distal end of the endoscope, and a baby bottle model having an opened bottom portion to which the mouthpiece is attached. The sucking mouth with the tip of the endoscope being in contact with the convex portion is attached to the baby bottle model, and the attached mouth is added to a patient who observes the inside of the oral cavity. Endoscope holder.   A transparent cylindrical member having a bottom and an open end and protecting the distal end of the endoscope is provided, and the suction mouth has a circular hole in the center, and the distal end of the endoscope is in contact with the bottom. 2. The endoscope holder according to claim 1, wherein the cylindrical member is inserted into the circular hole, and the convex portion is formed by a bottom portion of the cylindrical member protruding from the circular hole.   The endoscope holder according to claim 1, wherein the baby bottle model is provided with a handle to be grasped by a patient to be inspected in the oral cavity.   The endoscope holder according to claim 1, further comprising a lid having a locking portion for locking the mouthpiece and screwed onto the baby bottle model.   The endoscope holder according to claim 2, wherein the cylindrical member has a taper in which an outer diameter on the bottom side gradually decreases. A transparent cylindrical member that has a bottom and an open end and protects the distal end of the endoscope; and a food sample having a through-hole through which the cylindrical member is inserted and removed. An endoscope holder characterized in that the cylindrical member brought into contact with the body is inserted into the through-hole, and a bottom portion of the cylindrical member protruding from the through-hole is held by a patient who observes the inside of the oral cavity.   The food sample has a regulating member that regulates an outer diameter of a passing material at an inner edge of the through hole on a side where the bottom portion protrudes, and the cylindrical member is located at a predetermined position from the bottom portion of the cylindrical member. The endoscope holder according to claim 6, further comprising an auxiliary member that increases an outer diameter of the endoscope. The food sample has a regulating member that regulates the outer diameter of the passing material at the inner edge of the through hole on the side where the bottom protrudes, and the cylindrical member has a taper that the outer diameter on the bottom side gradually decreases. The endoscope holder according to claim 6, wherein the endoscope holder is provided.