JPH01274726A - Endoscope - Google Patents

Abstract

PURPOSE:To prevent the damage of the interior of a body cavity and to enable the safe use of an endoscope, by a method wherein a first index being a reference for insertion control is provided and a second index which can be clearly discriminated from the first index is provided in a position where it is situated nearer the hand side than the first index and not inserted in a cavity body. CONSTITUTION:A first index 15 is provided on the outer peripheral surface of an insertion part 1 of, for example, a womb endoscope and in a position at a given distance, e.g., 7cm, from the tip surface of a tip part 4. A second index 16 is provided in a position which is nearer the band side than the first index 15 and it is not inserted in a womb, for example, a position at a distance of 10cm from the tip surface of the tip part 4. The first and second indexes 15 and 16 can be clearly discriminated from each other even when observation is made from a direction near the axial direction of the insertion part 1. For sample, the first index 15 is formed by a single line and the second index 16 is formed by two lines. When, during insertion, the first index 15 being a reference enters through a cervix part 22, insertion operation is progressed based on the second index 16. This constitution enables reliable prevention of the insertion part 1 from being inserted more than necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endoscope whose insertion portion is inserted into a body cavity for observation.

[Conventional technology]

Generally, when using an endoscope to observe the inside of the body cavity of an organ such as the uterus, bladder, or kidney, the insertion section of the endoscope is inserted into the body cavity and the inside of the body cavity is examined using physiological saline or glucose solution. It is filled with a transparent liquid and the affected area is observed under the liquid. At this time, if the insertion section is inserted into the body cavity by more than the required amount, problems such as damage to the bottom of the body cavity and increased pain to the patient occur.

[Problem to be solved by the invention]

However, the length K from the entrance of the body cavity to the bottom of the body cavity varies from person to person, and the portion inserted into the body cavity is not visible from the outside, making it difficult for the operator to clearly determine the amount of insertion.

This invention was made based on the above circumstances, and its purpose is to clarify the degree of insertion of the insertion part, prevent damage to the inside of the body cavity, and enable safe use of the endoscope. It's about providing a mirror.

[Means and effects for solving the problems] In order to solve the above problems, the present invention provides an endoscope in which an index for displaying the length from the distal end is provided on the outer surface of the insertion part.
A first indicator is provided at a predetermined distance from the distal end and serves as a reference for the insertion operation of the endoscope, and an MIC is provided at a position closer to the hand than the first indicator that will not be inserted into the body cavity. and a second indicator that is clearly distinguishable from the first indicator.

Thereby, the insertion section is inserted into the body cavity using the first index as a reference, and if this first index is 9 people inside the body cavity due to individual differences, a second index provided on the proximal side of the first index 2
By using this index as a reference, it was determined that the insertion portion could be reliably prevented from being inserted more than the necessary amount into the body cavity.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an insertion section 1 of a uterine endoscope. This insertion section 1 is constructed by providing a distal end section 4 at the distal end of a flexible tube section 2 via a curved tube section 3 . Inside this insertion part 1, as shown in FIG. 2, an image guide fiber 5, a light guide fiber 6,
A channel pipe 7, a pair of operating wires 8 for bending the bending pipe section 3, and the like are inserted.

As shown in FIG. 3, the distal end surface of the insertion section 1 includes an observation window 9 to which the image guide fiber 5 is optically connected.
An illumination window 11 to which the light guide fiber 6 is optically connected, and a channel opening 1 through which the channel tube 7 communicates.
2 is provided.

One end of the operating wire 8 is connected to the distal end of the bending tube section 3, and the other end is connected to a bending operation mechanism provided in an operating section (not shown) connected to the proximal end of the insertion section 1. This bending operation mechanism allows the operation wire 8 to be pushed and pulled, thereby allowing the bending tube portion 3
can be curved, for example, as shown by the broken line in FIG.

In the case of the insertion section 1 of the uterine endoscope, in order to perform the bending operation safely without damaging the endometrium considering the anatomical average dimensions of the uterine cavity, K is a curved tube extending from the tip of the distal end section 4. The dimension t1 to the base end of the portion 3 is 15 to 35, and the tip portion 4 when curved.
The maximum amplitude (one side) t2 is 20 steps or less, and the bending angle is 45 to io on one side.

・It is desirable to be within the range.

A plurality of grooves 13 serving as communication passages are formed at predetermined intervals in the circumferential direction and with a predetermined length in the axial direction on the outer circumferential surface of the distal end portion of the flexible tube portion 2.

The width S1 of the groove portion 13 and the width sl of the peak portion 14 are s1≦
Also, one end of the groove part 13 is located on the proximal side of the curved pipe part 3 of the flexible pipe part 2, and the other end is located between 7 and 7 from the distal end surface of the distal end part 4.
It is located at the part at 15cInt.

In addition, the average length from the external cervix to the fundus of the uterus is approximately 7 cm (sb) for Japanese people, and if insertion part 1 is inserted into the uterus, there are risks such as damage to the endometrium and perforation of the fundus of the uterus. , so you need to be careful.

Therefore, on the outer circumferential surface of the insertion section 1, a first index 1 is provided at a predetermined distance from the distal end surface of the distal end section 4, for example, at a position of 7α.
5 is provided. In addition, due to individual differences etc.
If the first indicator 15 enters the cervix, the surgeon will not be able to tell the insertion length.
A second indicator 16 is provided at a position closer to the uterus than the uterus, for example, at a position 10 m from the distal end surface of the distal end portion 4. The first indicator 15 and the second indicator 16 are arranged so that they can be clearly identified even when observed from a direction close to the axial direction of the insertion section 1.
The index 15 is one line, and the second index 16 is two lines. Note that color coding may be used as another means.

The insertion section 1 of the endoscope configured in this manner is used as shown in FIG. 4. That is, the distal end portion 4 of the insertion portion 1 inserted through the external cervical os 21 passes through the cervical canal portion 22 and reaches the inside of the uterine cavity 23. Since the uterine cavity 23 is normally collapsed, a transparent liquid such as physiological saline or glucose solution is injected through the channel tube 7 to expand the lumen.

At this time, the insertion section 1 is inserted with reference to the first index 15 provided at a position of 7 m from the distal end surface of the distal end section 4, which is the average length from the external cervical os 21 to the fundus of the uterus. Then, due to individual differences, the insertion section 1 may be inserted more than 7 cIn into the uterine cavity 23, and the first indicator 15 may enter the cervical canal section 22. In this case, the second indicator 16 provided at a position 101 from the distal end surface of the distal end portion 4, which is not inserted into the cervical canal 22 on the proximal side of the first indicator 15, is used as a reference. Proceed with the insert operation as This allows the insertion length of the insertion section 1 to be clearly determined, and it is possible to reliably prevent the insertion section 1 from being inserted into the uterine cavity 23 by more than the required amount.

Therefore, damage to the bottom of the uterine cavity 23 can be prevented, and the endoscope can be used safely.

On the other hand, the inner diameter of the cervical canal section 22 is said to be 2 to 3 on average in nulliparous women, but because it is a highly elastic part, the insertion section 1 of the endoscope has an outer diameter of about 3 to 5 ω. It can also be passed through. In that case, the inner wall of the cervical canal section 22 comes into close contact with the outer peripheral surface of the flexible tube section 2. However, a groove portion 13 is formed on the outer circumferential surface of the flexible tube portion 2 . Therefore, a gap is secured between the inner wall of the cervical canal section 22 and the groove section 13 as shown in FIG. is excreted from the body. Therefore, transparency within the uterine cavity 23 is maintained, thereby ensuring a good observation field of view.

Note that the endoscope of the present invention is not limited to use in the uterus, but can of course be applied to the bladder and kidneys.

[Effects of the Invention] As described above, the present invention provides a first index that serves as a reference for the insertion operation of the endoscope at a position on the outer surface of the insertion section at a predetermined distance from the distal end. A second indicator that is clearly distinguishable from the first indicator is provided at a position that is closer to the hand than the indicator and is not inserted into the body cavity. Therefore, when the insertion section is inserted into the body cavity using the first index as a reference, and if the first index enters the body cavity due to individual differences, the second index provided on the proximal side of the first index By using this index as a standard, the degree of insertion of the insertion tube becomes clear, and it is possible to reliably prevent the insertion tube from being inserted more than the necessary amount into the body cavity, thereby preventing damage to the body cavity. This has the effect that it can be used safely.

[Brief explanation of the drawing]

1 is a side view of the insertion section showing the first embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, FIG. 3 is an end view of the distal end, and The figure is also an explanatory diagram of the state of use, and FIG. 5 is a sectional view taken along the line CC in FIG. 4. DESCRIPTION OF SYMBOLS 1... Insertion part, 4... Tip part, 15... First indicator, 16... Second indicator, 23... Uterine cavity. Applicant's agent Patent attorney Atsushi Tsuboi 42 Figure 4

Claims (1)

[Claims] In an endoscope in which an index is provided on the outer surface of the insertion portion to display the length from the distal end, a first indicator is provided at a predetermined distance from the distal end and serves as a reference for the insertion operation of the endoscope. It is characterized by comprising an indicator, and a second indicator that is provided at a position closer to the hand side than the first indicator and that is not inserted into the body cavity and that is clearly distinguishable from the first indicator. endoscope.