JPH0646978B2 - Endoscope with warning device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an endoscope with a warning device, and more specifically, an endoscope with a warning device that issues an alarm when the tip of the endoscope comes into close contact with the intestinal tract or the like. Regarding the mirror.

[Prior Art] When an endoscope is inserted into a body cavity for diagnosis and treatment of the body cavity, particularly in a narrow intestinal tract such as the large intestine, the endoscope is inserted into a target site while performing an angle operation. On the way, the tip of the endoscope often comes into close contact with the intestinal tract. In such a case, the operator of the endoscope (hereinafter referred to as an operator) can visually confirm the direction of the angle knob of the endoscope, or use his intuition to detect the contact direction. An angle operation was performed in the direction opposite to the close contact direction so that the distal end of the endoscope and the intestinal tract were separated from each other.

[Problems to be solved]

By the way, as described above, when the distal end of the endoscope can be moved in a direction away from the closely contacted portion by the angle operation, there is no particular problem, but the angle operation is complicatedly called up, down, left and right. When doing
Accidentally operating in a more closely contacting direction may cause patient pain or, in severe cases, may make a hole in the intestinal wall and immediately perform a separate surgery to treat the hole. There was probably a danger.

[Means and Actions for Solving Problems]

In order to solve the above-mentioned problems, the present invention provides a color detection means in the vicinity of the tip rigid portion, and issues a warning when the tip rigid portion approaches the inner wall surface of the insertion site where the tip rigid portion is inserted. The warning means is activated by an output signal from the color detecting means when the distance between the inner wall surface of the insertion portion and the hard tip portion is less than a predetermined value.

〔Example〕

 Hereinafter, the present invention will be described based on the illustrated embodiments.

1 (A), (B), (C), and (D) are an electric circuit diagram showing a first embodiment of the present invention, a front view of a distal rigid portion of an endoscope, and an image captured by the endoscope. It is a figure which shows the display operation of the screen in which the displayed image is displayed.

As shown in FIGS. 1 (A) and (B), the distal rigid portion 1a of the endoscope is
A forceps channel outlet 2 is formed in the upper part of the front end surface of the
An observation window 5 is arranged in the lower part. Illumination windows 3 and 4 are disposed on the left and right of the front end face, and a nozzle 12 for air and water supply is formed substantially in the middle of the illumination window 4 and the observation window 5. At the center of the front end surface of the tip rigid portion 1a, a sensor 11 is provided as a color detection means, which is covered with a suitable filter on a photoelectric conversion element so that only a red light having a constant light intensity or a constant light amount can be sensed. Has been done,
For example, at least when the distance between the inner wall surface of the inserted body cavity and the sensor becomes equal to or less than a predetermined value, light having a certain intensity or more reflected in the body cavity is incident and detected. Further, sensors 7 and 8 similar to the sensor 11 are arranged on the left and right side surfaces of the tip rigid portion 1a, respectively, and similar sensors 6 and 9 are arranged on the upper and lower side surfaces of the tip rigid portion 1a. It is set up.

The sensor 6 has an inverter 18 via an amplifier 13.
Is connected to the first input terminal of the input OR gate 24. The output terminal of the inverter 18 is connected to the output terminal of the light emitting diode 25.
The input terminal of is connected to a terminal that supplies an operating voltage Vcc via a resistor 31. Similarly, the sensor 7 is connected to the inverter 19 and the second input terminal of the OR gate 24 via the amplifier 14, and the output terminal of the inverter 19 is connected to the operating voltage Vc via the light emitting diode 26 and the resistor 32.
It is connected to the terminal that supplies c. Similarly, the sensor 8 includes the amplifier 15, the inverter 21, and the light emitting diode 2
7, the resistor 33 and the OR gate 24 and the like, the sensor 9 is connected to the amplifier 17, the inverter 23, the light emitting diode 29, the resistor 35 and the OR gate 24, and the sensor 11 is further connected to the amplifier 16, the inverter 22, the light emitting diode 28 and the resistor. 34 and the OR gate 24, etc., respectively. The output end of the OR gate 24 is connected to one end of a buzzer (BZ) 37 used as a warning means for emitting a warning sound via an inverter 36, and the other end of the buzzer 37 is connected to a terminal for supplying an operating voltage Vcc. Has been done.

Then, the light emitting diodes 25, 29, 27, 26,
When the front end surface of the tip end rigid portion 1a approaches a position where the front end face is inserted over a certain distance, the reference numeral 28 indicates the approach direction by lighting, and as shown in FIG. It is arranged above, below, to the left, to the right, and above the right corner outside the field mask of an almost square-shaped endoscope that can be seen when looking into That is, for example, when the upper side surface (in FIG. 1 (B)) of the rigid tip portion 1a of the endoscope approaches the intestinal wall, the light emitting diode 25 arranged above the visual field mask is turned on as described below. Thus, the operator is notified that the tip hard portion 1a is approaching the upper side surface.

The operation of the endoscope with a warning device configured as described above may be performed as follows. That is, as shown in FIG. 3, the surgeon operates the distal end rigid portion 1a, the angle portion 1b,
The soft part 1c is inserted into, for example, the intestinal tract 41 of the patient. Even if the tip hard portion 1a approaches the intestinal tract 41 having a large number of fold-shaped wall surfaces, or even if the tip hard portion 1a is in close contact with the intestinal canal 41, from the slight gap between the front end surface of the tip hard portion 1a and the wall of the intestinal tract 41. The so-called red-ball phenomenon in which the entire field of view of the field mask becomes reddish due to the light emitted from the illuminating window 3, that is, red light, which is often experienced when a hand is placed close to the light-emitting window of a portable electric lamp, leaks from the gap. A phenomenon occurs, but at this time, any of the sensors 6 to 11 detects this and at the same time any of the light emitting diodes 25 to 29 is turned on and displayed on the field mask (see FIG. 1 (C)). ). That is, any one of the sensors 6 to 11 reacts with the red color on the inner wall of the intestinal tract 41, and an electric signal is generated in each of the sensors 6 to 11, so that the amplifier 1 is used.
Sent to 3-17. And, for example, the sensor 6
Is amplified by the amplifier 13 and sent to the inverter 18 and the first input terminal of the OR gate 24. Then, the light emitting diode 25 connected to the output end of the inverter 18 lights up, and the buzzer 37 connected to the output end of the OR gate 24 via the inverter 36 sounds.

On the other hand, since the light emitting diode 25 is disposed above the visual field mask as shown in FIG. 1 (C), the upper end of the rigid tip portion 1a of the endoscope approaches the inner wall of the intestinal tract 41. It is understood that there is. Since the light emitting diode 25 is turned on in this manner, the operator immediately pulls in the direction in which the light emitting diode 25 is turned on, that is, the direction opposite to the direction in which the distal end rigid portion 1a of the endoscope is currently facing (that is, downward). To) It can be judged that the angle operation should be performed. This is not only the indication of the light emitting diode 25 to the sensor 6, but also the position where the respective side surfaces of the tip rigid portion displayed by each of the other light emitting diodes 26 to 29 are close to each other even when they are turned on. The angle operation may be performed so that the tip rigid portion faces in the opposite direction.

In addition, as shown in FIG. 1 (D), if the light emitting diodes arranged around the visual field mask are displayed in a triangular shape 25A to 29A, the moving direction of the tip rigid portion can be clearly displayed. It can be made easier for the person to understand.

Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, the same members as those shown in the first embodiment are designated by the same reference numerals and will not be described again. Further, in this embodiment, an optical fiber is arranged in the tip hard portion, the color of the affected area obtained by the optical fiber is detected by the photoelectric conversion element, and the output thereof is appropriately processed.

As shown in FIG. 2, there is 5 in the tip rigid part (1a) of the endoscope.
Book optical fibers 42 to 46 are provided. The tip end face 42a of the optical fiber 42 is the tip hard portion 1a.
Is disposed so as to be exposed on the upper side surface of the optical fiber 46, and the tip end surface 46a of the optical fiber 46 is disposed so as to be exposed on the lower side surface of the tip rigid portion 1a. The tip end surface 45a of the optical fiber 45 is disposed in the center of the front end surface of the endoscope tip rigid portion 1a, and the tip end surfaces 43a and 44a of the optical fibers 43 and 44 are provided on the left and right side surfaces of the tip rigid portion 1a. It is arranged. The optical fibers 42 to 46 are connected to the amplifiers 13 to 17 via photoelectric conversion elements 47 to 52, respectively.

Even with such a configuration, the intestinal tract 4 as in the first embodiment.
1 (see FIG. 3), when the endoscope is inserted into the body cavity inner wall surface when it is inserted within a certain distance, as in the above, where is the colored position on the visual field mask? An operator can be alerted by displaying with a light emitting diode and sounding a buzzer.

Although the present invention has been described with reference to an endoscope, the gastroscope or fiberscope or fiber is replaced by C instead.
Needless to say, the electronic scope using a CD can be applied to an endoscope having an angle operation mechanism. Furthermore, if a sensor that is sensitive to a predetermined color is used not only for an endoscope applied to the human body but also for an industrial endoscope,
Of course, the same can be applied.

〔effect〕

According to the present invention, the operator can easily know that the distal end hard portion of the endoscope is extremely close to the inner wall of the tube, and thus the operator must immediately treat the distal end hard portion in the direction away from the inner wall. You can Therefore, the risk of damaging the inner wall can be eliminated.

[Brief description of drawings]

1 (A), (B), (C), and (D) are electrical circuit diagrams of an endoscope with a warning device showing the first embodiment of the present invention, and a front view of a rigid tip portion of the endoscope. FIG. 2 is a diagram showing the display position of the screen, FIG. 2 is an electric circuit diagram of an endoscope with a warning device showing a second embodiment of the present invention, and FIG. 3 is an endoscope with a warning device inside the intestinal tract. It is a figure which shows the state at the time of inserting. 1a: rigid part of endoscope, 6, 7, 8, 9, 11 ... sensor (color detecting means), 25, 26, 27, 28, 29 ... light emitting diode (warning means), 37 ... Buzzer (warning means).

Claims (1)

[Claims] 1. A color detecting means is provided in the vicinity of the tip rigid portion, and a warning means is provided for issuing a warning when the tip rigid portion approaches the inner wall surface of the insertion portion into which the tip rigid portion is inserted. An endoscope with a warning device, characterized in that the warning means is activated by an output signal from the color detection means when the distance between the inner wall surface and the rigid tip portion becomes less than a predetermined value.