JPH0721003U - Parent-child endoscope - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a parent-child endoscope that allows a guide wire inserted into a guide channel of a mother scope to be smoothly inserted into the guide channel of a baby scope from its proximal end side without being caught. The purpose is to do. [Structure] A main guide wire 13 which is freely inserted into a guide channel 21 of a baby scope 1 over its entire length and is previously inserted into a guide channel 121 of a mother scope 101.
0, the auxiliary guide wire 30 which can be inserted into the guide channel 21 of the baby scope 1 over the entire length and is inserted into the guide channel 21 of the baby scope 1 in advance.
And a wire connecting means 100 for connecting the proximal end of the main guide wire 130 and the distal end of the auxiliary guide wire 30 is formed with a thickness not exceeding the outer diameter of the main guide wire 130. It is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a parent-child endoscope in which a child endoscope (hereinafter referred to as “baby scope”) is inserted into a guide channel of a parent endoscope (hereinafter referred to as “mother scope”) for use.

[0002]

[Prior art]

 In the parent-child endoscope, the tip of the mother scope is positioned, for example, in the duodenum, the baby scope is inserted into the guide channel of the mother scope, and the tip of the baby scope is made to protrude from the tip of the mother scope. It is used for observing the inside of the pancreatic duct and bile duct that open in the wall of the body.

However, it is not easy to insert a baby scope that protrudes from the tip of a mother scope into the pancreaticobiliary duct. Therefore, insert a thin guide wire that can be inserted into the guide channel of the baby scope into the guide channel of the mother scope in advance, insert the tip into the pancreaticobiliary duct, and insert the guide wire from the proximal end side into the baby. By inserting it into the guide channel of the scope, the baby scope is guided along the guide wire from the guide channel of the mother scope into the bile duct.

Therefore, as the device, a baby scope having a guide channel in the insertion portion, a mother scope having a guide channel for inserting the insertion portion of the baby scope, and a total length inserted in the guide channels of both scopes. A single guide wire that can be used is used.

[0005]

[Problems to be solved by the device]

 When inserting the baby scope, the proximal end of the guide wire is inserted into the guide channel of the baby scope from the distal end side of the baby scope.

Then, as shown in FIG. 5, for example, in the operating portion 6 of the baby scope 1, the guide wire 50 is caught in the branch portion 23 between the guide channel 21 and the suction conduit 22 or is directed to the suction conduit 22 side. There was a problem that it got in and did not come out to the inlet 21a side of the guide channel 21, which made the operation troublesome.

Since the branch portion 23 must be formed in a shape that does not cause a catch when a treatment instrument is inserted into the guide channel 21 from the inlet 21a side, as described above, the guide wire 50 is formed. When an operation of inserting it from the outlet side is performed, it is an unavoidable phenomenon that a catch or the like is generated at the branch portion 23.

Therefore, the present invention provides a parent-child endoscope in which a guide wire inserted into a guide channel of a mother scope can be smoothly inserted into a guide channel of a baby scope from its proximal end side without catching. The purpose is to do.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, a parent-child endoscope of the present invention comprises a baby scope having a guide channel in an insertion portion, a mother scope having a guide channel for inserting the insertion portion of the baby scope, The main guide wire that can be inserted into the guide channel of the baby scope over its entire length and is inserted into the guide channel of the mother scope in advance, and the main guide wire that can be inserted into the guide channel of the baby scope along its entire length and is inserted in advance into the guide channel of the baby scope And a wire guide means for connecting the base end of the main guide wire and the tip end of the sub guide wire, the wire guide means having a thickness not exceeding the outer diameter of the main guide wire. It is characterized by being.

[0010]

Embodiments Embodiments will be described with reference to the drawings. In FIG. 1, reference numeral 101 denotes a mother scope which is a thick side-viewing type duodenal fiberscope, and a bending portion 103 is connected to the front side of a flexible tube 102 that constitutes an insertion portion, and further, to the tip thereof. An observation window, an illumination window, and the like (not shown) are connected to the tip portion main body 104 provided sideways.

An operating portion 106 is connected to a proximal end portion of the flexible tube 102, and a bending operation knob 107 for bending the bending portion 103 in an arbitrary direction by a distance operation, a suction operation valve 108, and a feed valve. An air / water supply operation valve 109 and the like are provided on the operation unit 106 in a protruding manner.

In the guide channel 121 which is inserted and arranged over the entire length in the insertion portion, the inlet 121 a opens obliquely upward in the vicinity of the connecting portion of the lower end portion of the operation portion 106 with the flexible tube 102, and the outlet 121 b. Are opened in the same direction as the observation direction in the tip end main body 104.

Therefore, when the main guide wire 130 is inserted into the guide channel 121 from the inlet 121 a, the tip of the main guide wire 130 projects laterally from the outlet 121 b in the tip body 104.

Reference numeral 111 denotes a raising base arranged in the tip end main body 104 at the outlet 121b portion of the guide channel, which is remotely rocked by an operating lever 112 provided on the operating unit 106, whereby a main guide is provided. The protruding direction of the tip of the wire 130 can be changed.

In the operation unit 106, a suction tube 122 is connected to the guide channel 121 in a Y-shape obliquely from above at a position slightly entering from the inlet 121a of the guide channel. Therefore, when an insert such as the main guide wire 130 is inserted into the guide channel 121 from the inlet 121a side, the tip of the insert does not catch on the branch portion 123 with the suction tube 122 and smoothly moves there. Pass through.

Reference numeral 1 is a front-viewing thin baby scope, the insertion portion of which has a thickness such that it can be freely inserted into the guide channel 121 of the mother scope 101 and can project from the tip of the mother scope 101. Thus, it is formed longer than the insertion portion of the mother scope 101.

The insertion portion of the baby scope 1 has a bending portion 3 connected to the front side of the flexible tube 2, and further has an observation window, an illumination window, etc. (not shown) provided at the front end thereof toward the front. The main parts 4 are connected to each other.

An operation portion 6 is connected to a proximal end portion of the flexible tube 2, and a bending operation knob 7 for bending the bending portion 3 in an arbitrary direction by remote operation, a suction operation valve 8 and An air / water supply operation valve 9 and the like are provided on the operation unit 6 so as to project therefrom.

In the guide channel 21 inserted and arranged over the entire length in the insertion portion, the inlet 21 a opens obliquely upward near the connection portion of the lower end portion of the operation portion 6 with the flexible tube 2, and the outlet 21 b. On the tip end main body 4 is open in the same direction as the observation direction.

Therefore, when the sub guide wire 30 is inserted into the guide channel 21 from the inlet 21 a, the tip of the sub guide wire 30 projects forward from the outlet 21 b of the tip body 4.

In the operation section 6, a suction tube 22 is connected to the guide channel 21 in a Y-shape obliquely from above at a position slightly entering from the inlet 21a of the guide channel. Therefore, when an insert such as the sub guide wire 30 is inserted into the guide channel 21 from the inlet 21a side, the tip of the insert does not catch on the branch portion 23 with the suction tube 22 and smoothly moves there. Pass through.

The main guide wire 130 is formed of, for example, a flexible coil pipe tightly wound with a stainless steel wire, and its maximum outer diameter is smaller than the minimum inner diameter of the guide channel 21 of the baby scope 1, and It can be inserted into the guide channel 21 of the baby scope 1 over its entire length.

The main guide wire 130 is formed so that its entire length is longer than the combined length of the guide channels 121 and 21 of the mother scope 101 and the baby scope 1.

The auxiliary guide wire 30 is made thinner than the main guide wire 130 by, for example, a stranded wire formed by twisting a plurality of thin stainless steel wires, and has a total length longer than the length of the guide channel 21 of the baby scope 1. Thus, the baby scope 1 can be inserted into the guide channel 21 over the entire length.

FIG. 2 shows a connecting portion 100 for connecting the proximal end of the main guide wire 130 and the distal end of the auxiliary guide wire 30. In this embodiment, the base end of the main guide wire 130 extends to a close-wound coil pipe, and a rod 31 having a thickness that can be press-fitted into the coil pipe is attached to the tip of the sub guide wire 30 by, for example, silver brazing. It is fixed.

Therefore, by strongly pushing the rod 31 at the tip of the auxiliary guide wire 30 into the main guide wire 130 and press-fitting it, both guide wires 130, 30 are connected together as shown in FIG. . At this time, the outer diameter of the main guide wire 130 hardly expands.

In this way, the outer diameter of the connecting portion 100 is formed so as not to exceed the outer diameter of the main guide wire 130 before and after the connection, and the inside of the guide channel 21 of the baby scope 1 is formed. Can pass through.

When using the parent-child scope configured as described above, first, the distal end body 104 of the mother scope 101 is brought close to the target site, and the main guide wire 130 is inserted into the guide channel 121 from the inlet 121a side. Insert the tip into the target site (for example, in the pancreatic duct).

Next, the auxiliary guide wire 30 is inserted into the guide channel 21 of the baby scope 1 from the inlet 21 a side, and its tip is projected from the tip of the baby scope 1, and the rod 31 at the tip is attached to the main guide wire 130. The both guide wires 130 and 30 are press-fitted to the proximal end to connect them together.

In this state, if the baby scope 1 is pushed into the guide channel 121 of the mother scope 101 along the guide wires 130 and 30, the base end of the main guide wire 130 connected to the sub guide wire 30 is pushed. The part enters the guide channel 21 of the baby scope 1 from the outlet 21b side, is guided by the auxiliary guide wire 30 protruding to the inlet 21a side, and projects toward the inlet 21a side without being caught at the branching portion 23. .

Then, if the baby scope 1 is further pushed into the guide channel 121 of the mother scope 101 by pressing the protruding end of the main guide wire 130 with a hand, the tip of the baby scope 1 is mainly moved as shown in FIG. It projects from the tip of the mother scope 101 along the guide wire 130 and is guided to the target site.

The present invention is not limited to the above embodiment, and for example, the means for connecting the two guide wires 130, 30 may be of a thickness that does not exceed the outer diameter of the main guide wire 130. It may be formed in any way.

[0033]

[Effect of device]

 According to the parent-child type endoscope of the present invention, the base end of the main guide wire that is previously inserted into the guide channel of the mother scope and the tip of the sub guide wire that is previously inserted into the guide channel of the baby scope from its inlet side are provided. Since the main guide wire can be connected with a wire connecting means that does not exceed the outer diameter of the main guide wire, insert the main guide wire into the guide channel of the baby scope from its outlet side, and make a branch at some midpoint. It has a great effect that it can be passed smoothly without being caught, and thus the baby scope can be easily guided to the target site along the main guide wire.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment before insertion.

FIG. 2 is a partially enlarged view of the wire connecting portion of the embodiment before connection.

FIG. 3 is a partially enlarged view of the wire connecting portion of the embodiment after connection.

FIG. 4 is a side view of the embodiment after insertion.

FIG. 5 is a schematic sectional view showing a partial side surface of a conventional example.

[Explanation of symbols]

 1 Baby Scope 21 Guide Channel 30 Sub Guide Wire 31 Rod 100 Connecting Part 101 Mother Scope 121 Guide Channel 130 Main Guide Wire

Claims (1)

[Scope of utility model registration request] 1. A baby scope having a guide channel in the insertion portion, a mother scope having a guide channel for inserting the insertion portion of the baby scope, and a mother scope capable of being inserted into the guide channel of the baby scope over the entire length. Of the main guide wire, which has a main guide wire that is preliminarily inserted into the guide channel of the baby scope and a sub guide wire that is freely inserted into the guide channel of the baby scope over the entire length and that is previously inserted into the guide channel of the baby scope. A parent-child endoscope, wherein a wire connecting means for connecting an end and a tip of the sub guide wire is formed with a thickness not exceeding an outer diameter of the main guide wire.