JPH0733765Y2 - Endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a treatment instrument raising lever as an operation member for raising the treatment instrument such as forceps when the treatment instrument is pulled out from the tip of the insertion portion. The present invention relates to an endoscope in which a main body operation unit is provided.

[Prior Art] An endoscope includes a main body operation part for an operator to hold and operate with an hand, an insertion part to be inserted into a body cavity or the like, and an optical fiber bundle. The light guide that transmits the illumination light is connected to the light source device and is connected to the LG flexible part. The inside of the body is inspected and diagnosed through the observation window provided at the tip of the insertion part. It is also used to draw out a treatment tool such as forceps from the treatment tool outlet to collect cells and excise the affected part.

Here, the endoscope is a so-called direct-view type in which the above-mentioned observation window, treatment instrument outlet, etc. are provided on the distal end surface of the insertion section, and the side provided on the side surface of the distal end section of the insertion section. Some are visual. In a side-view endoscope, a treatment instrument standing mechanism is provided in order to allow an operation in which a treatment instrument is led out from a treatment instrument lead-out port and a sniper is aimed at an affected part or the like. Further, some direct-viewing endoscopes are provided with a mechanism corresponding to the treatment tool standing mechanism.

The treatment instrument upright mechanism is provided on one side surface of the main body operation unit together with the treatment instrument upright table arranged at the connection portion of the treatment instrument insertion channel to the treatment instrument outlet and the angle knob for performing the angle operation of the insertion portion. A treatment tool stand-up lever and an operation wire connecting the treatment tool stand-up lever and the treatment tool stand, and when the treatment tool stand-up lever is rotated,
The operation wire is pulled, and the treatment instrument stand moves around a predetermined fulcrum.

3 and 4 show an endoscope according to the related art. In the figure, 1 is a main body operation part, 2 is an insertion part, 3 is a LG flexible part, 4 is an eyepiece part, respectively. Angle knobs 5a and 5b for bending the distal end portion of the insertion portion 2 are provided on one side surface of the main body operation portion 1. The angle knob 5a is for U / D operation for bending the insertion portion 2 up and down, and the angle knob 5b is for L / R operation for bending the insertion portion 2 left and right. Each of these angle knobs 5a A lock lever 6a and a lock knob 6b for locking 5 and 5b at desired positions are also provided.

Reference numeral 7 denotes a treatment instrument raising lever, which is disposed between a side surface of the main body operating portion 1 and the angle knob 5a, and a finger hook portion 7a at its tip portion is a lower surface of the main body operating portion 1. It is extended downward.

[Problems to be Solved by the Invention] By the way, in the endoscope of the related art described above, the LG flexible portion 3 is different from the side on which the angle knobs 5a, 5b and the treatment instrument raising lever 7 in the body operating portion 1 are mounted. Is extended obliquely downward from the side surface on the opposite side, and the LG flexible part 3 has a certain length and is also a heavy object, so when the main body operation part 1 is gripped, a weight balance is achieved. However, there is a problem in that the burden on the hand during operation becomes significantly large and fatigue becomes extremely large when operated for a long time.

In order to solve such a problem, as shown in FIG. 5, there is a configuration in which the LG flexible part 3 ′ is connected to the lower surface of the main body operating part 1. However, with such a configuration, a halfway space is formed between the connecting portion of the LG flexible portion 3 ′ to the main body operating portion 1 and the finger-holding portion 7a of the treatment instrument raising lever 7. For this reason, there is a problem in that when operating the treatment instrument erection lever 7, there is a risk that a finger may be caught between the finger hook 7a and the LG flexible portion 3 '. Further, in order to avoid this, when the treatment instrument raising lever 7 is moved away from the side surface of the main body operating section 1, the angle knobs 5a, 5b also move.
It becomes difficult to perform the operation with the fingers of the hand holding the main body operation unit 1 by moving away from.

The present invention has been made in view of the above points, and an object of the present invention is to provide an endoscope in which the endoscope can be gripped in a comfortable state and the operability of the treatment instrument raising lever is good. is there.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a main body operation part provided with an angle knob and a treatment tool stand-up lever on one side surface, and a lower surface of the main body operation part in a substantially central part. The LG soft part is connected to the LG soft part, and the LG soft part is obliquely extended from the connection part in the direction opposite to the one side surface, and the finger hook part of the treatment instrument standing lever is extended to the LG soft part. The feature is that it is arranged close to the position.

[Operation] In the present invention, first, the LG flexible portion is connected to the lower surface of the main body operating portion at a substantially central position in the width direction. As a result, when a pulling force acts on the LG flexible part while gripping and operating the main body operating part, a force is applied to the main body operating part in the direction of pressing it into the hand because the acting part is on the lower surface. Since the force acts in the direction of rotating the main body operation portion hardly acts, the burden on the hand can be reduced. However, if you extend the LG flexible part directly below the main body operation part,
Since the treatment tool stand-up lever and the angle knob are projected on the side surface of the main body operation part, in order to balance the weight with these protruding members, the LG flexible part is directed in the opposite direction to the side where the members project in this way. It extends diagonally toward. As a result, when the main body operating portion is gripped, the weight balance is further improved and the operability thereof is significantly improved. Here, the extension angle of the LG soft part is preferably about 5 to 20 ° in order to balance the weight.

Moreover, since the finger rest of the treatment instrument raising lever is made to extend in the direction in which the LG soft part escapes in this way, there is a halfway gap between the finger rest and the extension of the LG soft part. Since the pace cannot be formed, there is no risk that a finger will be caught when operating this treatment instrument raising lever.
In addition, since the treatment instrument stand-up lever is usually provided with a half-lock mechanism for locking the treatment instrument stand-up lever in a state in which the treatment instrument stand-up lever is rotated by a desired angle, the finger rest portion of the treatment instrument stand-up lever is used for resting a finger. It can also be used as a finger support.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2.

In the figure, 10 indicates a main body operation part that can be grasped by an operator with one hand, and the main body operation part 10 has an insertion part 11 inserted into a body cavity or the like, an LG flexible part 12 connected to a light source device, and An eyepiece unit 13 is connected, and a treatment instrument erection lever 14 is attached to one side surface of the main body operation unit 10, and angle knobs 15a and 15b are provided with lock levers 16a and lock knobs 16b thereof. The above points are the same as those of the above-mentioned conventional technique.

However, as is clear from FIG. 1, since the LG flexible portion 12 is connected to the lower surface of the main body operating portion 10 at a substantially central position in the width direction, when the main body operating portion 10 is gripped and operated,
LG flexible part 12 is located at the base of the thumb and forefinger of the hand,
Moreover, even if a tensile force acts on the LG flexible part 12, the main body operation part
Since the force acts on the lower surface of 10 and the force does not act on the side surface thereof, it is possible to suppress the action of the force in the direction in which the main body operation portion rotates. Therefore, the main body operation part 10 is stable in the hand, and further, it is arranged to extend obliquely downward by a predetermined angle with respect to the vertical center line XX of the main body operation part 10. . Thus, the extending direction of the LG flexible portion 12 is opposite to the side on which the treatment instrument raising lever 14 and the angle knobs 15a, 15b are provided, and the angle with respect to the center line XX of the main body operating portion 10. Is about 5 to 20 °. On the other hand, the finger hook portion 14a of the treatment instrument erection lever 14 extends to a position close to the LG soft portion 12 so that the gap therebetween is minimized.

This embodiment is configured as described above, and the LG flexible part 12
Is provided on the lower surface of the main body operating part 10, and is extended obliquely in the direction opposite to the side on which the treatment instrument raising lever 14 and the angle knobs 15a, 15b of the main body operating part 10 are provided. , The weight of the treatment instrument raising lever 14 and the angle knobs 15a, 15b on one side of the main body operating portion 10 is balanced by extending the LG flexible portion 12 at an angle in the opposite direction, and the main body Operating part 10
It becomes possible to bring the position of the center of gravity of the to the center line XX. As a result, the weight balance when the operator grips the main body operation unit 10 becomes extremely good, and moreover,
Since the LG flexible part 12 can be gripped by being sandwiched between the thumb and the index finger at the base part, the LG flexible part 12 can be gripped without difficulty and fatigue is reduced even when operated for a long time.

Further, since the finger hook portion 14a of the treatment instrument upright lever 14 is made to extend toward the escape direction of the LG flexible portion 12,
The finger-holding portion 14 can be widened, and the operation tool standing lever 14 can be operated smoothly.
Since there is substantially no gap between the flexible portion 12 and the connecting portion to the main body operating portion 10, there is no risk of fingers being caught when operating the treatment instrument raising lever 14.

Further, by widening the finger-holding portion 14 of the treatment instrument raising lever 14 in this manner, a finger can be attached to the finger-holding portion 14 even when the treatment instrument raising lever 14 is not operated.
Thus, of the fingers of the hand holding the main body operation unit 10 of the endoscope, the thumb operates the angle knobs 15a and 15b and the treatment instrument standing lever 14, and particularly the angle knobs for UD operation. 15a is frequently operated, and moreover, the thumb has to perform an unreasonable movement at the time of its operation, which causes the most fatigue of the thumb. Therefore, the finger hook 14 can be used as a finger support for resting when the thumb operation is not performed. In addition, normally, when the treatment tool raising lever 14 is operated and rotated,
A half-lock mechanism is provided to hold the treatment instrument upright position, and the treatment instrument upright lever 14 can be fixed at an arbitrary rotation position. Even when the tool stand is in the desired standing position, this finger hook 14a can be used as a finger support.

[Effects of the Invention] As described above, according to the present invention, the LG flexible portion is connected to the main body operation portion at a substantially central position in the width direction on the lower surface thereof.
The treatment tool stand-up lever and the angle knob are arranged so as to extend obliquely in the direction opposite to the side portion provided in a state of protruding from the substantially central position, and the finger-hook portion of the treatment tool stand-up lever is provided on this LG. Since it is arranged close to the extended part of the flexible part, even if a pulling force etc. acts on the LG flexible part when gripping and operating the main body operating part, this force will be applied to the bottom surface of the main body operating part. Since the main body operation part can be stored in a stable state in the hand and the weight balance can be well balanced against the treatment tool raising lever and the angle knob protruding from the side surface of the main body operation part, it can be used for a long time. There is no fatigue even when operated, and since there is no halfway gap between the treatment instrument stand-up lever and the LG soft part, the treatment instrument stand-up lever can be operated smoothly without pinching your finger. , And the treatment The finger hook standing lever also exhibits various effects such as can be used as finger subscript portion for rest of the finger.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention. FIG. 1 is an external view of the endoscope as seen from the eyepiece side, and FIG.
FIG. 3 is a right side view of the drawing, and FIGS. 3 to 5 show a prior art. FIG. 3 is an external view of an endoscope in one prior art as seen from the eyepiece side, and FIG. FIG. 5 is a perspective view and FIG. 5 is an external view of an endoscope according to another conventional technique as viewed from the eyepiece side. 10: body operation part, 11: insertion part, 12: LG flexible part, 14: treatment instrument raising lever, 14a: finger rest part, 15a, 15b: angle knob.

Claims (1)

[Scope of utility model registration request] 1. An LG soft part is connected to a main body operation part provided with an angle knob and a treatment tool erection lever on one side surface at a substantially central portion of the lower surface in the width direction, and the LG soft part is connected from this connection part. In addition to extending obliquely in a direction opposite to the one side surface, the finger hook portion of the treatment instrument erection lever is arranged close to the extending position of the LG soft portion. Endoscope.