JPH08266463A - Scope for endoscope - Google Patents

Abstract

PURPOSE: To provide a scope for an endoscope which enables fixing of a three- way branch pipe for branching a forceps pipeline inserted with forceps thereinto properly to achieve a higher assembling efficiency eventually. CONSTITUTION: This scope for an endoscope is provided with a grip part 101 to be gripped by an operator, an inserting part to be inserted into a celom, a forceps pipeline 107 inserted with forceps thereinto and a three-way branch pipe 3 to branch a forceps pipeline 107. It also has a ring 9 which is connected to an outer circumference part of the three-way branch pipe 3 and has the diameter thereof almost the same as the inner diameter of a cylindrical connection member 7 to connect the grip part 101 and the inserting part, a head part of a screw 5 to connect the ring 9 to the three-way branch pipe 3 and a notch which is provided at the connection member 7 and the width thereof is almost the same as the diameter of the head part of the screw.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical endoscope for diagnosing the inside of a body cavity, and more particularly to an endoscope capable of appropriately fixing a three-way branch pipe branching a forceps duct into which forceps is inserted. Regarding the mirror scope.

[0002]

2. Description of the Related Art As is well known, an endoscope scope 100 for diagnosing the inside of a body cavity, as shown in FIG. 3, has a grasping portion 101 grasped by an operator and an inserting portion 103 inserted into the body cavity.
Consists of. Further, the grip portion 101 is provided with a forceps port 105 into which forceps are inserted. This forceps port 105
It is connected to a forceps duct 107 that passes through the grasping portion 101 and the insertion portion 103 to the tip on the subject side. The forceps duct 107 is branched and a suction device (not shown) is provided at the tip.
Is connected to the suction pipe line 109 connected to.

The forceps duct 107 is branched by using a three-way branch pipe 111 which is branched in three directions as shown in FIG. One end of the three-way branch pipe 111 is provided inside the forceps port 105, and is joined to a gripper case 101a which is a cover body of the gripper 101, and is a forceps base 11.
3, the other end is connected to the forceps conduit 107, and the other end is connected to the suction conduit 109. The three-way branch pipe 111 and the forceps base 113 are fixed by screwing a nut 117 to a fixing member 115 provided at one end of the three-way branch pipe 111 and provided with a screw on the surface.

[0004]

However, since the three-way branch pipe 111 of the conventional endoscope scope 100 is fixed only to the forceps mouthpiece portion 113, the endoscope scope 10
When assembling 0, the three-way branch pipe 11 is attached to the forceps base 113.
By the time of fixing 1, there was a possibility of damaging other built-in objects such as the light guide, the air / water supply channel, and the signal cable. Further, the fixing member 115 and the nut 117 have to be aligned in a narrow space such as the inside of the grip portion 101, which causes a problem of poor workability. Further, when connecting the three-way branch pipe 111 and the forceps duct 107, the three-way branch pipe 111 must be temporarily fixed with a jig or tweezers so that the corresponding end portion faces the forceps duct 107 side. There was a problem that it took.

The present invention has been made in view of the above problems, and it is possible to appropriately fix the three-way branch pipe that branches the forceps conduit into which the forceps is inserted, and it is possible to improve the assembly efficiency. It is intended to provide an endoscope scope.

[0006]

In order to achieve the above object, a first invention of the present application is to provide a gripping portion gripped by an operator,
An insertion portion to be inserted into a body cavity, a forceps duct that is penetrated from the forceps port provided on the surface of the grip portion to the subject side through the grip portion and the insertion portion, and forceps is inserted, and a forceps tube. In an endoscope scope including a three-way branch pipe branching a path, the diameter is approximately the same as the inner diameter of a cylindrical connection member connected to the outer peripheral portion of the three-way branch pipe and connecting the grip portion and the insertion portion. The gist of the present invention is to have a ring, a protrusion provided on the outer peripheral portion of the ring, and a notch provided on the connecting member and having a width substantially the same as the diameter of the protrusion. Further, preferably, the protrusion is a head of a screw that connects the ring to the outer peripheral portion of the three-way branch pipe.

[0007]

According to the endoscope of the first aspect of the present invention, the grasping portion grasped by the operator, the inserting portion inserted into the body cavity, and the grasping portion from the forceps port provided on the surface of the grasping portion. In the endoscope scope including a forceps duct that penetrates the subject side through the insertion section and the forceps is inserted, and a three-way branch tube that branches the forceps duct, the grip section and the insertion section are combined. A ring, which has a diameter substantially the same as the inner diameter of the cylindrical connecting member to be connected and which is provided with a protrusion on the outer peripheral portion, is connected to the outer peripheral portion of the three-way branch pipe, and the connection member is cut to have a width substantially the same as the diameter of the protruding portion. Make a notch. The ring is inserted into the connecting member by inserting the protrusion into the notch to limit the circumferential movement of the three-way branch pipe within the connecting member. Therefore, the three-way branch pipe can be properly fixed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an endoscope according to the present invention. Since the external configuration of the endoscope 1 according to the present invention is the same as that of the conventional endoscope 100 shown in FIG. 4, the same members are designated by the same reference numerals, and illustration and description thereof are omitted.

As shown in FIG. 1, an endoscope scope 1 of the present embodiment is provided on a grip portion 101 to be gripped by an operator, an insertion portion 103 to be inserted into a body cavity, and the grip portion 101. From the forceps opening 105 to the grip portion 101 and the insertion portion 103
Forceps duct 107 penetrating to the subject side through the three-way branch pipe 3 that branches the forceps duct 107, and is connected to the outer peripheral portion of the three-way branch pipe 3 via a screw 5 and inserted into the grip portion 101. A ring 9 having a diameter substantially the same as the inner diameter of the cylindrical connecting member 7 for connecting the portion 103, and a diameter of the head 5a of the screw 5 provided corresponding to the installation position of the three-way branch pipe 3 of the connecting member 7. A notch 11 (see FIG. 2) having substantially the same width is provided.

Next, the connecting operation of the three-way branch pipe 3 of the endoscope scope 1 of this embodiment will be described. First, the ring 9 is fixed with screws 5 at a desired position on the outer circumference of the three-way branch pipe 3. In addition, as shown in FIG. 3, the ring 9 is fixed to the three-way branch pipe 3 by a hole 9a provided in the outer periphery of the ring 9 and a screw receiver 3a provided in the three-way branch pipe 3 and screwed with a screw 5. This is done by inserting the screw 5 and screwing it together.

In this state, as shown in FIG. 2, the forceps duct 107 is connected to the corresponding end of the three-way branch pipe 3, and the ring 9 is inserted so that the head 5a of the screw 5 is inserted into the notch 11. Insert into the connecting member 7. At this time, the installation position of the three-way branch pipe 3 is determined by the length of the forceps conduit 107, but since the forceps conduit 107 has elasticity, the installation position of the three-way branch pipe 3 can be finely adjusted. As a result, the movement of the three-way branch pipe 3 in the circumferential direction within the connecting member 7 is limited. still,
In this state, the movement of the three-way branch pipe 3 in the front-rear direction (longitudinal direction) is not yet completely limited. Also, cutout 1
If 1 is made slightly larger than the head 5a of the screw 5, the position adjustment range of the three-way branch pipe 3 can be widened.

Next, the suction conduit 109 is connected to the corresponding end of the three-way branch pipe 3, and is further joined to the grip case 101a, which is the cover body of the grip 101, with the forceps base portion 13.
Are fitted from the side of the forceps opening 105 to the corresponding ends of the three-way branch pipe 3. Then, the nut (1) is attached to a screw (not shown) provided at the end of the forceps mouthpiece portion 13 on the side facing the three-way branch pipe 3.
The forceps mouthpiece portion 13 is fixed to the grip portion case 101a by screwing 5 together.

As a result, the three-way branch pipe 3 is also restricted in its movement in the front-rear direction and is completely fixed to the connecting member 7. The forceps mouthpiece portion 13 and the three-way branch pipe 3 can be easily fitted to each other because the three-way branch pipe 3 is accurately positioned to some extent by the ring 9.

Thus, the three-way branch pipe 3 is completely fixed,
Further, one end of the three-way branch pipe 3 is connected to the forceps base portion 13, the other end is connected to the forceps pipe passage 107, and the other end is connected to the suction pipe passage 109.

Thus, the endoscope scope 1 of the present embodiment
Is a ring 9 having a diameter substantially the same as the inner diameter of the cylindrical connecting member 7 that connects the three-way branch pipe 3 and the forceps duct 107 to the outer peripheral portion of the three-way branch pipe 3 via a screw 5, Head 5
A notch 11 having substantially the same width as the diameter of a is provided corresponding to the installation position of the three-way branch pipe 3 of the connection member 7, the forceps duct 107 is connected to the corresponding end of the three-way branch pipe 3, and the head of the screw 5 is connected. Part 5a
The ring 9 is inserted into the connecting member 7 so that the ring is inserted into the notch 11, and then the forceps mouthpiece portion 13 is inserted into the three-way branch pipe 3.
Since the three-way branch pipe 3 can be appropriately fixed because it is fitted to the corresponding end portions of the two, it is possible to improve the assembly efficiency.

[0016]

As described above, the present invention has an effect that a three-way branch pipe for branching a forceps duct into which forceps is inserted can be appropriately fixed, and as a result, assembling efficiency can be improved. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an endoscope according to the present invention.

FIG. 2 is a view of a connecting portion between a ring and a connecting member when viewed from a screw head side.

FIG. 3 is a view showing a cross section of a connecting portion between a ring and a connecting member.

FIG. 4 is a diagram showing an external configuration of an endoscope.

FIG. 5 is a view showing a cross section of a three-way branch pipe portion of a conventional endoscope scope.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Endoscope 3 Three-way branch pipe 5 Screw 7 Connection member 9 Ring 11 Notch 13 Forceps mouthpiece part 15 Nut 100 Endoscope scope 101 Grasping part 103 Insertion part 105 Forceps port 107 Forceps channel 109 Suction channel

Claims (2)

[Claims] 1. A gripping part to be gripped by an operator, an insertion part to be inserted into a body cavity, and a forceps port provided on the surface of the gripping part, passing through the gripping part and the insertion part to the subject side. In an endoscope scope including a forceps duct that penetrates and inserts forceps, and a three-way branch pipe that branches the forceps duct, in an endoscope scope, the grasping part and the insertion part are connected to an outer peripheral part of the three-way branch pipe. A ring having a diameter substantially the same as the inner diameter of a cylindrical connecting member for connecting to each other, a protrusion provided on the outer periphery of the ring, and a notch provided on the connecting member and having a width substantially the same as the diameter of the protrusion. An endoscope comprising: a ring, the ring being inserted into the connecting member by inserting the protrusion into the notch to limit the circumferential movement of the three-way branch pipe in the connecting member. scope. 2. The endoscope according to claim 1, wherein the protrusion is a head of a screw that connects the ring to the outer peripheral portion of the three-way branch pipe.