JPS59181120A - Bending operation apparatus of endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] It relates to an operating device.

No. The endoscope 1 shown in FIG. 1 employs a conventional bending operation device 2 of the lever operation type. This endoscope consists of an insertion section 3, an operation section 4, and a universal cord 5. The insertion section 3 has a distal end component 8 connected to the distal end of a flexible tube 6 via a curved tube 7. universal coat 7
A connector 9 for connecting to a light source device (not shown) is attached to the extending end of the connector 5 .

The operation section 4 is provided with an eyepiece section 0 and an operation side portion of the bending operation device 2.

The operating lever l1 of the bending operating device 2 is pivotally connected to the sweeping section 4 via a pivot shaft 12, and is rotatable along the longitudinal axis t of the operating section 4.

When the doctor performs the bending operation, he/she grasps the operating section 4 with one hand and operates the operating lever 1 with the thumb of that hand. That is, as shown in FIG. 2, the thumb is placed on the head of the operating lever 11 and moved in the direction shown by the arrow and in the direction along the longitudinal axis t of the tb operating section 4. However, in order to achieve this movement, the thumb joint must be bent and stretched.

Repeatedly bending and stretching the first joint of the thumb is extremely tiring for humans, and it also makes it difficult for the operator to achieve the desired result, resulting in unstable operation. However, the endoscope was not able to perform diagnostic operations smoothly and quickly, but it had poor operability and was easily tiring.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide an endoscope bending operation device that is capable of stable, smooth, and quick bending operations and is easy to operate without causing fatigue. .

A first embodiment of the present invention will be described below with reference to FIGS. 3 to 8. Further, in this embodiment, descriptions of parts having the same configuration as the endoscope shown in FIGS. 1 and 2 will be omitted.

The operating lever 1 in this embodiment is made of a relatively thick belt-shaped plate bent into an L-shape, as in the case of FIG. The rotating side piece 13 is pivotally attached to the operating part 4.The rotating side piece 13 protrudes toward the thumb side of the operating hand. It is provided with an inclination parallel to or close to the center line of At this time, it is close to a plane that is perpendicular to the center line of the pivot shaft 12 and passes in the longitudinal axis direction t of the operating section 4.

Further, an operating knob 14 is attached to the rotating piece 13 so as to be movable along its longitudinal direction. That is, a recess 15 is formed in the surface of the rotating piece 13 along its longitudinal direction, and a protrusion 1 provided on the operation knob 14 side is formed in the recess 15.
6 is tightly fitted into the recess 15 for engagement. In addition, retaining grooves 17 and 17 are formed in the left and right side walls of the recess 15 as shown in FIG. The locking protrusion 18°18 fits and locks. and,
The kneading prevents the operating knob 14 from coming off the recess 15. That is, the protrusion 16 is engaged with the recess 15 so as not to come off, and supports the operation knob 14 so as to be movable in the longitudinal direction of the rotating piece 13.

Furthermore, the proximal end portion of the recess 15 is open,
When the projection 16 of the operating knob 14 is positioned in the opening 19, it can be removed from the recess 15. Further, this opening 19 is normally closed by fitting a lid 20 as shown in FIGS. 4 and 6. The lid body 2θ is pivoted to the rotating side piece 13 via a hinge 21 so that it can be opened and closed. Note that a groove for preventing slipping is formed on the finger contact surface 22 of the operation knob 14.

When using the bending operation device 2, as shown in FIG. put on. Then, by rotating the operating lever 1), the bending operation device 2 can be driven to remotely bend the bending tube 7 of the insertion section 3.

By the way, in this operation, the thumb can be operated while remaining in a substantially straight state. That is, when the operating lever 1 is on the eyepiece 10 side as shown in FIG.
is located at the tip of the operating lever 1. Operate it from that position. As you rotate the operating knob 11,
is the operating lever 1 along the longitudinal direction of the rotating side piece 13.
Move to the proximal end of 1. In other words, there is no need to bend or straighten the first joint of the thumb, and the thumb can be operated in a more or less straight state.

9 and 10 show a second embodiment of the present invention. That is, in this embodiment, a through-hole 23 is provided in the operating knob 14, and a member of the operating lever 1 is inserted into the through-hole 23 and is movably attached thereto. moreover,
A locking member 2 made of an elastic material is attached to the tip of the operating lever 1.
4 can be attached and detached freely, and an annular protrusion 25 is provided on the proximal end portion of the rotating piece 13 of the operation lever 11, and the locking member 24 and the protrusion 25 The operation knob 14 can be moved within a range between 1 and 2. The locking member 24 fits onto the tip of the operating lever 1.1, and the locking pawl 26 provided thereon engages the operating lever 11.
It is fitted and locked into a groove 22 provided on the side and is detachably attached. In other words, by removing this locking member 24, the operation knob 14 can also be removed and can also be attached. Further, a large number of grooves are formed on the finger contact surface 22 of the operating knob 14 to prevent slipping.

Therefore, the operation knob 14 of this embodiment is also used in the same manner as in the above embodiment.

FIGS. 11 and 12 show a third embodiment of the present invention. The operating knob 14 of this embodiment is attached to the operating lever 1 via an external sliding member 28 that can be divided into two. That is, with respect to the rotation ψ1j1-13 formed in the plate shape of the external sliding member 281-i, the upper frame 29 and the lower frame 30 are joined from the upper and lower surfaces of the external sliding member 281-i. The movable piece part 13 is inserted thereinto, and the movable piece part 13 is mounted so as to be movable along its longitudinal direction. Three holes are formed into which the external sliding member 28 of the operating knob 14Fi is fitted.

Then, insert the tip of the external sliding member 28 into the 12th hole.
As shown in the figure, the upper frame 29 and lower frame 30 are fixed as one body by fitting them together. In order to maintain this tilted state, the upper frame 29 has a recess 3 on the working knob 14 side.
2 is provided with a protrusion 33 that engages with it. In addition, operation knob 1
A large number of grooves are provided on the finger contact surface 22 of 14 to stop the bevel. Note that 34 is a stopper against which the external sliding member 28 is applied.

In each of the embodiments described above, the operating knob 14 is detachably attached to the operating lever 11, but it may not be detachable.

Alternatively, a finger fitting (not shown) for inserting a finger into the operation knob 14 may be provided.

As explained above, according to the present invention, there is no need to bend and extend the first joint of the thumb to rotate the operating lever of the bending operating device, and the operation can be performed while remaining in a straight position. can. Therefore, finger fatigue is reduced and operability is improved, that is, it can be easily rotated to a desired angular position. Moreover, the rotation operation can be performed smoothly and quickly.

Furthermore, there is no need for a particularly complicated structure, and the structure can be compact and manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional endoscope, FIG. 2 is an explanatory diagram of its operation status, and FIG. 3 is a front view of the vicinity of the operating lever 7 in an embodiment of the mud 1 of the present invention. Figure 4 is a front view of the imitation lever, Figure 5 is a sectional view taken along line v-■ in Figure 41, Figure 6 is ■-■m in Figure 4.
7 is a sectional view of the operating knob,
FIG. 8 is an explanatory diagram of the operation status of the operating lever, FIG. 9 is a partially cutaway front view of a portion of the operating lever of the second embodiment of the present invention, and FIG. 11 is a partially cutaway front sectional view of a portion of the operating lever of the third embodiment of the present invention, and 12F21 is a side sectional view of a portion of the operating lever. 2...Bending operation device, 1...Operation lever, J2.
...Pivot shaft, 13...Rotating side piece, 14...Operation knob. Applicant's agent Patent attorney Takehiko Suzue Figure 2

Claims (1)

[Claims] An endoscope opening operation device, in which a bending operation lever is pivotally supported on the operation section of the endoscope, and the bending operation is performed by rotating the operation lever with the fingers of the hand grasping the operation section. An endoscope bending operation device, characterized in that the operation lever is provided with an operation knob on which the child's finger is placed, and the operation knob is attached so as to be movable in a direction intersecting the movement direction of the operation lever.