JPH0443201Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rigid endoscope device composed of a sheath, a bridge, and a telescope.

[Problems to be solved by conventional techniques and ideas] In recent years, by inserting an elongated insertion section into a body cavity, it is possible to diagnose internal organs, etc., and to perform therapeutic procedures using treatment instruments as necessary. Endoscopes have become widely used.

The above-mentioned endoscopes are divided into two types: a flexible endoscope with a flexible insertion section that allows observation deep inside the body cavity through a curved insertion path, and a flexible endoscope with a rigid insertion section that allows observation deep into the body cavity through a curved insertion path. There is a rigid endoscope that is inserted into the

Conventionally, in the above-mentioned rigid endoscope, the telescope 27 is fixed to the bridge 26 by a position fixing pin 28 as shown in FIG.
When using the front strabismus or side view telescope 27,
When changing the observation range, sheath 25, bridge 2
6. It was necessary to rotate the telescope 27 as a unit and move it back and forth.

However, in the case of a rigid ureteroscope, the ureteral wall is in close contact with the sheath insertion part, the sheath insertion part is slightly curved due to the curvature of the ureter, and the cross-sectional shape of the sheath is generally circular. Because it is oval or oval in shape, it is difficult to rotate it because forceful rotation may damage the ureteral wall.

German utility model application to address the above issues
Publication No. 8604565.2 discloses a configuration in which a rubber cap is attached to a coupler fixed to a sheath, and a grasping forceps with a telescope attached therein can be moved back and forth. There is no structure to confirm or regulate the position relative to the sheath.

On the other hand, when observing in combination with a sheath whose tip has been cut off flat and a front oblique or side-viewing telescope, the telescope should protrude from the sheath tip so that the field of view is not restricted by the sheath opening. Because it was fixed, there was a high probability of damaging the renal pelvic mucosa with the tip of the telescope during surgery.

[Purpose of the invention] The present invention was developed in view of the above circumstances, and it allows the telescope to be rotated without difficulty and allows the tip of the telescope to be in a state where it protrudes from the tip of the sheath and a state where it is retracted. The purpose of the present invention is to provide a rigid endoscope whose position can be easily adjusted.

[Means and effects for solving the problem] The present invention provides an elastic connecting member at the connecting portion between the bridge and the telescope, so that the bridge and the telescope can be combined with each other while maintaining watertightness.
It is designed to be able to move back and forth or rotate.

[Example] Figs. 1 and 2 relate to the first embodiment of the present invention, and Fig. 1a is an explanatory diagram when the connecting member is extended;
Figure 1b is an explanatory diagram when the connecting member is compressed;
The figure is an explanatory diagram showing the configuration of a rigid endoscope device.

In FIG. 2, the sheath 1 is composed of a hollow and elongated sheath insertion section 2 and a large-diameter detachable section 3 formed at the rear end side of the sheath insertion section 2. As shown in FIG. A connecting portion (not shown) is formed at the rear of the detachable portion 3, and the front end portion of the bridge 4 is detachably connected thereto. The bridge 4 is hollow, and its distal end is provided with a connecting portion (not shown) that can be attached to and detached from the sheath 1, and its rear end is provided with a recess 5, which has elasticity. A connecting member 7 is attached.

The connecting member 7 includes a connecting part 13, a telescopic part 14, and a watertight part 15 in this order from the front. It is formed into a hollow, approximately spherical shape so that it can move back and forth. Watertight part 15
is provided with a hole 17 having a diameter smaller than the outer diameter of the insertion portion 9 of the telescope 8, and when the insertion portion 9 is inserted into the hole 17, the contraction force of the connecting member 7 maintains watertightness. It's starting to become easier. Further, on the rear end surface of the connecting member 7, there is a receiving section 18 on which the front end surface of the operating section 11 of the telescope 8 located at the rear comes into contact.
is provided so as to receive the compression force when the connecting member 7 is compressed.

At the rear of the connecting member 7, there is an insertion section 9 to be inserted into the body cavity, a large-diameter operation section 11 formed at the rear end of the insertion section 9, and an operation section 11 formed at the rear end of the operation section 11. A telescope 8 comprising an eyepiece 12 is inserted through the telescope 8 while being kept watertight by the connecting member 7.

Incidentally, during an observation procedure, the insertion portion 9 of the telescope 8 inserted into the sheath 1 is designed to be able to protrude and retreat from the sheath opening 19 as the connecting member 7 expands and contracts.

In other words, when the connecting member 7 is in an extended state,
The distal end of the telescope 8 is retracted into the sheath 1, and when observing the inside of the body cavity, the connecting member 7 is compressed so that the distal end of the telescope 8 protrudes from the sheath 1.

Further, when the telescope 8 is rotated, the telescope 8 is rotated using a rotational force that overcomes the frictional force generated by the contraction force of the hole 17 provided in the connecting member 7.

Note that the connecting member 7 may be formed in a bellows shape or the like, as long as it has elasticity and is freely expandable and contractible.

By using this embodiment, even when the ureteral wall is in close contact with the sheath insertion part as in the case of a rigid ureteroscope, the telescope can be rotated without difficulty, and the telescope can be rotated easily by expanding and contracting the connecting member. The tip of the scope protrudes from the tip of the sheath,
By adjusting the position to the retracted state, damage to the intrapelvic mucosa at the tip of the telescope during surgery is reduced.

[Effects of the invention] As explained above, according to the invention, the telescope can be rotated without difficulty, and the position of the telescope tip can be adjusted between a protruding state and a retracted state with respect to the sheath. This has the effect of being easy to perform.

[Brief explanation of the drawing]

Fig. 1 relates to the first embodiment of the present invention, Fig. 1a is an explanatory diagram when the connecting member is expanded, Fig. 1b is an explanatory diagram when the connecting member is compressed, and Fig. 2 is an explanatory diagram when the connecting member is compressed. FIG. 3 is an explanatory diagram showing the configuration of an endoscope apparatus, FIG. 3 is an explanatory diagram showing the configuration of a conventional rigid endoscope apparatus, and FIG. 4 is an explanatory diagram showing the configuration of a conventional bridge. 1... Sheath, 4... Bridge, 7... Connecting member, 8... Telescope.

Claims (1)

[Scope of claim for utility model registration] In a rigid endoscope device consisting of a sheath, a bridge, and a telescope, the telescope is connected to the telescope connection part of the bridge while maintaining watertightness in combination with the telescope. What is claimed is: 1. A rigid endoscope device, characterized in that a rigid endoscope device is provided with a connecting member that is elastic and expandable to allow the device to move back and forth or rotate.