JP3620574B2 - Endoscope mouthpiece - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscope mouthpiece, and more particularly to an endoscope mouthpiece used for oral inspection of a small intestine.
[0002]
[Prior art]
As disclosed in Japanese Patent Laid-Open No. 10-234656, a mouthpiece used for endoscopic examination of the small intestine has a guide tube for inserting and guiding the insertion portion of the endoscope into the body cavity ( Guide tube) is attached.
The guide tube is inserted from the subject's mouth to the small intestine, and after the insertion length is adjusted, the guide tube is fixed to the mouthpiece body by a fixing member. That is, the mouthpiece used for the small intestine endoscopy is composed of a mouthpiece body and a fixing member.
[0003]
[Problems to be solved by the invention]
However, when the conventional mouthpiece is intended to correspond to subjects having various mouth sizes, it is necessary to prepare various kinds of mouthpiece bodies having different sizes of portions to be added to the subject. There were drawbacks. The mouthpiece main body needs to be processed for fixing the guide tube to each of the mouthpiece main bodies, and when various types of mouthpiece main bodies are prepared, there is a problem that the cost becomes very high. In addition, since many mouthpiece bodies are bulky, there is a problem that management of the mouthpiece becomes complicated when many kinds of mouthpiece bodies are prepared.
[0004]
The present invention has been made in view of such circumstances, and an object thereof is to provide an endoscope mouthpiece that is excellent in terms of management and cost.
[0005]
[Means for Solving the Invention]
In order to achieve the above object, the present invention provides a mouthpiece body in which an insertion hole through which a guide tube for inserting and guiding an endoscope insertion portion is inserted, and is detachably attached to an outer peripheral portion of the mouthpiece body. a tooth contact member applied to a subject, the said guide tube is inserted into the insertion hole of the mouthpiece body and a fixing means for fixing to the mouthpiece body, the mouthpiece of the guide tube by the fixing means When fixing to a main body, the said tooth | gear support member is simultaneously fixed to the said mouthpiece main body by the said fixing means .
[0006]
According to the first aspect of the present invention, since the tooth rest member constituting the mouthpiece is formed separately from the mouthpiece body, the mouthpiece corresponds to subjects having various mouth sizes. In this case, it is only necessary to prepare many kinds of tooth-contact members that can be directly attached to the subject according to the size of the mouth of the subject, and the mouthpiece body can be a common part. Since the tooth rest member does not need to be processed to fix the guide tube as in the mouthpiece body, the endoscope mouthpiece of the present invention is low-cost and has various mouth sizes. It is possible to correspond to the subject. Further, in the present invention, since it is only necessary to prepare many types of toothbrush members that are lighter and smaller than the mouthpiece body, it is easier to manage the mouthpiece than when many types of mouthpiece bodies are prepared.
[0007]
According to the first aspect of the present invention, when the guide tube is fixed to the mouthpiece body with the fixing member, the mouthpiece member of the mouthpiece can be fixed to the mouthpiece body at the same time. Can be fixed by simple operation.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of an endoscope mouthpiece according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an overall perspective view showing an endoscope mouthpiece 10 of this embodiment used for endoscopic examination for small intestine, and FIG. 2 is a cross-sectional view of the mouthpiece 10 shown in FIG. 3 is a 3-3 cross-sectional view of FIG.
[0009]
As shown in these drawings, the mouthpiece 10 includes a mouthpiece body 12, a fixing member 14, and a tooth rest member 18, and the mouthpiece body 12 and the fixing member 14 to which the tooth rest member 18 is externally fitted are provided. The guide tube 16 is inserted. The mouthpiece body 12 is formed with an insertion hole 12A through which the guide tube 16 is inserted, and the fixing member 14 is formed with an insertion hole 14A through which the guide tube 16 is inserted. Further, a male screw 12E is formed on the outer peripheral surface of the mouthpiece body 12, and a female screw 14E that is screwed into the male screw 12E is formed on the inner peripheral surface of the fixing member 14.
[0010]
The mouthpiece body 12 has a flange 12C formed at one end thereof, and the flange 18C of the tooth contact member 18 is brought into contact with the flange 12C. Further, a conical slope portion 12B is formed at the other end of the mouthpiece body 12, and a plurality of cutout portions 12D for making the slope portion 12B easily deformed inward is formed on the slope portion 12B. Is formed.
[0011]
On the other hand, the fixing member 14 is provided with a slope portion 14B on the inner peripheral surface. The slope portion 14 </ b> B is formed at a steeper angle than the slope portion 12 </ b> B of the mouthpiece body 12, and when the fixing member 14 is fitted into the mouthpiece body 12, the slope portion 14 </ b> B of the fixing member 14 becomes the slope of the mouthpiece body 12. The portion 12B is pressed, and the inclined surface portion 12B is deformed inward to fix the guide tube 16.
[0012]
A pair of flat surfaces (D-cut surfaces) 18A and 18A are formed on the outer peripheral surface of the tooth rest member 18 at positions facing each other, and the flat surface 18A is held by the subject. The tooth contact members 18 are prepared in various shapes. For example, several types of tooth contact members 18 having different flat surface intervals d1 and outer diameters d2 shown in FIG. 3 are prepared.
The mouthpiece 10 configured as described above is made of a material that can be disinfected and sterilized. For example, the mouthpiece body 12, the tooth rest member 18, and the fixing member 14 are heat-resistant such as polyetherimide resin so that autoclave sterilization (sterilization method using steam heated and pressurized at 2 atm and 132 ° C.) can be performed. Made of resin.
[0013]
On the other hand, as shown in FIG. 3, the guide tube 16 is a triple structure tube in which a tube 16C made of a resin such as urethane is covered with a chemical-resistant coat 16D and the inner side is protected with a lubrication coat 16E. Normally, the guide tube 16 having a length of about 850 mm is used when the length of the endoscope flexible portion is about 2300 mm. Since this guide tube 16 is covered with the chemical resistant coat 16D, it is not affected by body fluids such as disinfectant and gastric fluid, and is protected by the lubrication coat 16E, so that the endoscope insertion portion can be smoothed. Can be inserted into.
[0014]
Next, a method for handling the mouthpiece 10 will be described with reference to FIGS. First, as shown in FIG. 2, the tooth rest member 18 of the mouthpiece 10 is attached to the mouthpiece body 12, and the inner diameter of the inclined surface portion 12 </ b> B of the mouthpiece body 12 is larger than the outer diameter of the guide tube 16. The fixing member 14 is fitted into the mouthpiece body 12.
[0015]
Next, as shown in FIG. 4, the guide tube 16 is inserted into the endoscope insertion portion 102 in advance before inserting the small intestine endoscope 100 into the subject 1. Then, the guide tube 16 is pulled toward the hand operation section 104 along the endoscope insertion section 102, and the scope insertion port 16 </ b> A of the guide tube 16 is inserted into the distal end portion of the hand operation section 104.
[0016]
Next, the subject 1 of the mouthpiece 10 is held by the subject 1, and the endoscope insertion portion 102 is inserted to a predetermined position in the body cavity in this state. Next, the guide tube 16 is inserted into the body cavity along the endoscope insertion portion 102, and the insertion of the guide tube 16 is stopped when the distal end 16B of the guide tube 16 is positioned in the descending leg 2 of the duodenum. .
[0017]
Next, the fixing member 14 of the mouthpiece 10 shown in FIG. 2 is rotated and fitted into the mouthpiece body 12 to fix the guide tube 16 to the mouthpiece body 12. Furthermore, by inserting the endoscope insertion portion 102 of FIG. 4, an endoscope inspection up to the deep intestine by the endoscope 100 can be performed. The above is the method of handling the mouthpiece 10.
[0018]
Next, the operation of the mouthpiece 10 configured as described above will be described.
As described above, the mouthpiece 10 has the tooth rest member 18 formed separately from the mouthpiece body 12. Accordingly, when the mouthpiece body 12 is made to correspond to subjects having various mouth sizes, only a variety of tooth pad members 18 that can be directly added to the subject are prepared according to the mouth size of the subject. The mouthpiece body 12 may be a common part. For example, when preparing two types of mouthpieces 10 for children and adults, only two types of tooth rest members 18 having different flat surface intervals d1 and outer diameters d2 are prepared. Only one type of 14 is required. Since the tooth rest member 18 does not need to process a portion for fixing the guide tube 16 (that is, the slope portion 12B and the notch portion 12D) unlike the mouthpiece body 12, the mouthpiece body 12 and the tooth rest member 18 Compared to the case where a large number of the slabs are integrally formed, the cost is low. That is, the mouthpiece 10 of the present embodiment can deal with patients with various mouth sizes at a low cost. Further, the mouthpiece 10 according to the present embodiment is economical because only the tooth rest member 18 that is easily damaged by the subject can be replaced. Further, if the tooth rest member 18 can be made of an inexpensive material, the tooth rest member 18 can be made a disposable product.
[0019]
Moreover, the mouthpiece 10 of the present embodiment, the fixing member 14, since the guide tube 16 and the tooth contact member 18 can be simultaneously fixed to the mouthpiece body 12, a tooth contact member 18 separately from the mouthpiece body 12 Even if it forms, the operation for fixing does not become complicated. In the above-described embodiment, the tooth contact members 18 having different flat surface distances d1 and outer diameters d2 are prepared. However, the present invention is not limited to this, and any shape may be prepared. For example, a large number of tooth contact members 18 having different flange lengths d3 and flat surface lengths d4 in FIG. 2 may be prepared. Moreover, you may prepare the tooth | gear contact member 22 of the shape hollowed inward as shown in FIG. 5, In this case, it is preferable to prepare the thing according to the mesh | engagement of each subject. Further, several kinds of tooth-contact members 18 having different materials may be prepared. For example, a tooth contact member 18 made of fluorine rubber or fluorine TPE may be used. Thereby, the intensity | strength (biting response) etc. of the tooth pad member 18 can be changed according to a subject's liking etc. Further, if the tooth contact member 18 having elastic force is prepared, the tooth contact member 18 is deformed according to the size of the mouth of the subject, so the types of the tooth contact members 18 to be prepared can be reduced. .
[0020]
In the above-described embodiment, the tooth rest member 18 may be positioned by the fixing member 14. For example, as shown in FIG. 6, an engagement portion composed of a convex strip portion 14F and a concave strip portion 14F is provided on the contact surface between the fixing member 14 and the tooth strip member 18, and the axis of the tooth pad member 18 is a mouthpiece. It is ensured to overlap the shaft of the main body 12 and the fixing member 14. Thereby, the rattling of the tooth rest member 18 can be prevented. Moreover, you may provide an engaging part in the contact surface of the mouthpiece main body 12 and the tooth pad member 18, and it is also possible to prevent rotation of the tooth pad member 18 with respect to the mouthpiece 12 in this case.
[0021]
Moreover, the fixing method of the tooth rest member 18 and the mouthpiece body 12 by the fixing member 14 is not limited to the above-described embodiment, and may be fixed as shown in FIG. 7, for example. 7, the mouthpiece body 12 and the fixing member 14 shown in FIG. 2 are provided with a protruding portion 12G and a recessed portion 14G in place of the male screw 12E and the female screw 14E. The mouthpiece body 12 and the fixing member 14 are fixed by fitting the recess 14G with one touch.
[0022]
In the above-described embodiment, the guide tube 16 and the tooth rest member 18 are simultaneously fixed to the mouthpiece body 12 by the fixing member 14, but the guide tube 16 and the tooth rest member 18 are separately provided. It may be fixed to. For example, the tooth rest member 18 is formed in a shape (substantially C shape) in which a part of the annular member is cut out, and the tooth rest member 18 is fitted into the mouthpiece body 12 from the notched portion. 12 can also be fixed.
[0023]
【The invention's effect】
As described above, according to the endoscope mouthpiece according to the present invention, since the tooth rest member is formed separately from the mouthpiece main body, it corresponds to subjects having various mouth sizes. In addition, it is only necessary to prepare many types of tooth contact members according to the size of the subject's mouth, and the mouthpiece body can be a common part. Therefore, the present invention can reduce the cost of the mouthpiece and can manage the mouthpiece as compared with the case where many types of the mouthpiece body and the tooth rest member are integrally formed are prepared. It can be done easily. Further, according to the present invention, since the tooth rest member can be fixed to the mouthpiece body by the fixing means for fixing the guide tube to the mouthpiece body, the tooth rest member can be fixed by a simple operation.
[Brief description of the drawings]
1 is an overall perspective view showing an endoscope mouthpiece according to an embodiment of the present invention. FIG. 2 is an assembled cross-sectional view of the mouthpiece shown in FIG. 1. FIG. 4 is an operation explanatory view of the endoscope mouthpiece shown in FIG. 1. FIG. 5 is an explanatory view of a tooth contact member having a different shape from FIG. 2. FIG. 6 is an explanatory view of a positioning method of the tooth contact member. ] Explanation of mouthpiece with different shape from FIG.
DESCRIPTION OF SYMBOLS 10 ... Mouthpiece, 12 ... Mouthpiece main body, 14 ... Fixing member, 16 ... Guide tube, 18 ... Tooth rest member, 18A ... Flat surface

Claims (3)

A mouthpiece body formed with an insertion hole through which a guide tube for inserting and guiding the endoscope insertion portion is inserted;
A tooth rest member that is detachably attached to the outer periphery of the mouthpiece body and is added to the subject,
A fixing means for fixing the guide tube inserted into the insertion hole of the mouthpiece body to the mouthpiece body ,
An endoscope mouthpiece, wherein when the guide tube is fixed to the mouthpiece body by the fixing means, the tooth rest member is fixed to the mouthpiece body by the fixing means at the same time . By fitting the fixing means into the mouthpiece body, the fixing means presses the mouthpiece body and deforms it inward to fix the guide tube,
The endoscope mouthpiece according to claim 1, wherein the toothpiece member is sandwiched and fixed by a flange formed at an end portion of the mouthpiece body and the fixing means. The endoscope mouthpiece according to claim 1 or 2, wherein an engaging portion is provided on a contact surface between the fixing means and the tooth rest member.

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