JP3124083B2 - Endoscope treatment instrument raising device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment tool raising device for an endoscope for changing the direction in which the treatment tool protrudes from a distal end body provided at the distal end of an insertion portion of the endoscope.

[0002]

2. Description of the Related Art A conventional treatment instrument raising device for an endoscope generally has a treatment instrument raising piece made of metal provided rotatably or slidably on a distal end main body. By remotely moving the connected operation wire, the treatment instrument raising piece is operated to change the protruding direction of the treatment tools.

[0003]

However, during the clinical examination, dirt tends to adhere between the distal end main body and the treatment instrument raising piece rotatably or slidably provided on the distal end main body.
Moreover, since it is very difficult to completely clean the waste, there is a risk that infection between patients may occur through an endoscope.

Further, dirt easily enters a gap between the wire guide through which the operation wire is inserted and the operation wire, and it is not easy to clean the same. Accordingly, an object of the present invention is to provide a treatment instrument raising device for an endoscope that can be easily cleaned after a clinical test and can easily maintain a clean state.

[0005]

In order to achieve the above object, an endoscope treatment instrument raising apparatus according to the present invention includes a treatment instrument projecting port provided at a distal end body provided at a distal end of an insertion section of the endoscope. For covering the inside of the treatment tool projection opening with an elastic member, and for moving the treatment tool raising piece moved by remote control and the treatment tool raising piece by remote control inside the elastic coating. By disposing the operating wire and remotely moving the treatment tool raising piece, the elastic covering of the treatment tool protrusion port is deformed, thereby projecting the treatment tool from the treatment tool protrusion port. It is characterized in that the direction is changed.

The distal end body may be entirely covered with the elastic coating, and the elastic coating has electrical insulation, and the entire surface of the distal end body is electrically insulative. May be covered by the above member.

[0007]

An embodiment will be described with reference to the drawings. FIGS. 1 to 6 show an embodiment of the present invention, and FIGS.
1 shows a cross section taken along lines II and III-III in FIG. 2, and FIGS. 4, 5 and 6 show IV-IV and V-V in FIG.
6 shows a cross section taken along lines -V and VI-VI.

The distal end body 1 is formed at the distal end of a flexible endoscope insertion portion, and is connected to the distal end of a bending portion 5 which can be bent by remote control. 51, 52 and 53
Are a node ring, a mesh tube, and a jacket tube forming the curved portion 5.

The inner portion of the distal end body 1 is made of metal, and the outer surface thereof is water-tightly covered with an elastic member 3 entirely made of electrically insulating rubber.

As shown in FIGS. 2 and 3, the observation window 6 and the illumination window 7 are juxtaposed to the distal end body 1 sideways. As shown in FIG. 3, the observation optical system 60 and the illumination optical system 70 have a mirror frame 6 formed of an electrically insulating member.
The lens frames 61 and 71 are joined and fixed over the metal block 2 and the elastic coating 3 of the distal end body 1. In addition, both the lens frames 61 and 71 have flange portions projecting in the form of flanges, and the elastic covering 3 is sandwiched between the flange portions and the metal block 2 to be water-tightly fixed.

A solid-state image sensor 62 is arranged at an image forming position of the observation optical system 60, and a cable 64 connected to a substrate 63.
Transmits an image signal and the like. Note that an image may be optically transmitted by an image guide fiber bundle instead of the solid-state imaging device 62.

An emission end of the light guide fiber bundle 72 for illumination is arranged inside the illumination optical system 70, and the illumination light expanded by the illumination optical system 70 illuminates the observation range.

Air supply / water supply nozzles 8 and 9 for ejecting air and water toward the surfaces of the observation window 6 and the illumination window 7 are formed in the elastic coating 3 of the distal end main body 1, and the air supply nozzles are provided in the back. The pipe 11 and the water supply pipe 12 are communicatively connected.

A treatment tool 100 such as a biopsy forceps or a high-frequency snare
As shown in FIG. 2, the treatment tool projection port 20 for projecting is formed in the distal end portion main body 1 in a vertically elongated shape in parallel with the observation window 6 and the illumination window 7. As shown in FIG. 1, the rear end of the treatment tool outlet 20 is formed as a vertical wall 21, and the bottom surface of the front part of the treatment tool outlet 20 has a slope 2.
2 is formed.

The surface of the treatment tool outlet 20 is also entirely covered with the elastic coating 3 in a watertight manner.
Is formed in a cylindrical shape at a portion of the treatment instrument projecting port 20 which extends rearward from the bottom. The front end of the treatment instrument insertion channel 25 inserted through the entire length of the insertion section of the endoscope is connected to the rear end of the cylindrical portion 3a of the elastic coating 3 by the connection pipe 26.
Connected through.

Therefore, when the treatment instrument 100 is inserted into the treatment instrument insertion channel 25 from the operation section (not shown) connected to the base end of the insertion section, the distal end portion of the treatment instrument 100 is moved to the distal end main body 1. Projecting obliquely forward from the treatment instrument projection port 20 of FIG.

As shown in FIG. 1, a treatment instrument raising piece 30 is provided near the mouth of the treatment instrument protrusion port 20 at the front end portion of the distal end body 1 so as to be elastically coated in parallel with the axial direction of the distal end body 1. 3
It is slidably provided inside.

As shown in FIG. 4, the right and left ends of the treatment instrument raising piece 30 are connected to the metal block 2 of the distal end main body 1.
As shown in FIG. 5, a portion which abuts on the elastic covering 3 covering the treatment tool outlet 20 is halfway along the elastic covering 3. It is formed in a circular shape.

As shown in FIGS. 4 and 5,
An operation wire 31 remotely operated from the operation unit is
It is connected to the side of the treatment instrument raising piece 30. The operation wire 31 is disposed in the elastic coating 3 completely separated from the outside of the distal end main body 1, and as shown in FIG.
It passes through a guide coil 32 fixed to the rear end of the metal block 2 of the distal end main body 1 and reaches the operation section from inside the endoscope insertion section.

Therefore, the operation wire 31 is operated from the operation section side.
1 and FIG. 5, the elastic covering 3 is pushed near the mouth of the treatment tool outlet 20 by the treatment tool raising piece 30 pulled by the operation wire 31, as shown by the arrow A and the two-dot chain line in FIGS. Then, the treatment tool 100 is pushed up by the deformed portion of the elastic coating 3 and rises, and the protruding direction of the treatment tool 100 changes in a direction approaching the center of the observation visual field.

Conversely, if the operation wire 31 is pressed from the operation section side, the treatment instrument raising piece 30 moves to the distal end side, so that the elastic covering 3 returns to the original state, and the direction in which the treatment instrument 100 protrudes is also changed. Return to the direction.

The present invention is not limited to the above embodiment. For example, the treatment instrument raising piece may be of any shape and type. In addition, the treatment tool outlet 2
By coating or applying a material having good slip such as tetrafluoroethylene resin on the surface of the slope 22 at the bottom of the zero, the amount of advance / retreat operation force of the treatment tool can be reduced.

[0023]

According to the treatment instrument raising apparatus for an endoscope of the present invention, the inside of the treatment instrument protrusion is covered with the elastic member, and the treatment instrument raising piece and the operation wire are provided in the elastic covering. Since there is no place for collecting dirt, cleaning and the like after use are extremely easy. Since no dirt adheres to the operation wires and the like, there is no need to wash them after use, so that they are extremely clean.

Further, if the elastic coating is formed of an electrically insulating member and the entire surface of the distal end body is covered with the electrically insulating member, even if an electrical trouble occurs, electric shock, burns and the like may occur. No accidents occur and electrical safety can be ensured.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view (a cross-sectional view taken along a line II in FIG. 2) of an embodiment.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a side sectional view (a sectional view taken along line III-III in FIG. 2) of the embodiment.

FIG. 4 is a rear cross-sectional view (a cross-sectional view along IV-IV in FIG. 1) of the embodiment.

FIG. 5 is a plan sectional view (a sectional view taken along line VV in FIG. 1) of the embodiment.

FIG. 6 is a rear cross-sectional view (a VI-VI cross-sectional view in FIG. 1) of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tip main body 3 Elastic coating 20 Treatment tool outlet 30 Treatment tool raising piece 31 Operation wire 100 Treatment tool

Claims (2)

(57) [Claims] 1. A The endoscope insertion portion treatment instrument projection port to a metal <br/> tip body provided at a distal end to form, the distal end portion main body total
The body is covered with an elastic member to cover the
The end of the elastic coating is overlapped and connected to the tube, and the tube extends rearward from the bottom of the treatment tool outlet.
In the part, the above elastic coating is formed into a cylindrical shape and the end is treated.
Connected to the tool insertion channel to cover the above-mentioned treatment tool outlet
To the inner side of the elastic covering, the treatment instrument insertion channel
The treatment instrument elevator upper piece and the treatment instrument raising upper piece for causing the raising of the front end portion of a treatment instrument that is passed through the Le disposed an operation wire for moving by remote control, the treatment instrument elevator upper piece The endoscope is characterized in that the elastic covering of the treatment tool protrusion is deformed by moving the treatment tool by remote control, thereby changing the direction in which the treatment tool protrudes from the treatment tool protrusion. Treatment instrument raising device. 2. The method according to claim 1 , wherein the elastic coating has an electrical insulating property.
2. The treatment tool raising device for an endoscope according to claim 1, wherein the entire surface of the distal end portion main body is covered with an electrically insulating member.