JP2008228951A - Endoscopic treatment appliance system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly safe endoscopic treatment appliance system allowing a user to optionally combine or disconnect a flexible sheath, an operation unit and a control part unit, capable of preventing occurrence of a burn accident caused by false connection of the system by eliminating the possibility of a high-frequency current flowing through an operating wire if a conductive coil sheath is used as the flexible sheath. <P>SOLUTION: A proximal end connection mouthpiece 11A of the conductive coil sheath 11 can be connected to a sheath connection part 31A of a non-high-frequency control part unit 3A, but can not be connected to a sheath connection part 31B of a high-frequency control part unit 3B. A proximal end connection mouthpiece 12B of an insulated coating sheath 12 can be connected to the sheath connection part 31B of the high-frequency control part unit 3B, but can not be connected to the sheath connection part 31A of the non-high-frequency control part unit 3A. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an endoscope treatment tool system.

As an endoscope treatment instrument system, a user arbitrarily combines or uncombines a flexible sheath, an operation unit (that is, a distal treatment member and a unit of an operation wire connected thereto) and an operation unit. There is something that can be done. Such an endoscope treatment tool system is not only convenient for cleaning and repair, but also avoids duplication of members to be prepared, so that it is highly economical (for example, Patent Document 1).
JP-A-10-309284

  In the endoscope combination treatment instrument system as described above, a conductive coil sheath in which a conductive metal coil is exposed on the outer surface is prepared for a treatment that does not perform a high frequency treatment, and is electrically insulative. An insulating sheath in which the entire outer surface of the tube is coated is prepared as a flexible sheath for performing high-frequency treatment.

  In addition, since the high-frequency treatment is performed or not performed with one type of operation unit, the operation unit is always provided with a high-frequency power connection terminal for connecting a high-frequency power cord, and only when high-frequency treatment is performed. A high frequency power cord is to be connected to the power connection terminal.

  However, when many are used at hospital sites, a conductive coil sheath is used as a flexible sheath due to misunderstanding or inadequate communication, etc., but a high-frequency power cord is connected to the high-frequency power connection terminal and an operation wire is used. A high-frequency current was passed through, and there was a risk of a burn accident due to a leakage current from the conductive coil sheath.

  The present invention relates to a conductive coil sheath as a flexible sheath in an endoscope treatment instrument system in which a user can arbitrarily combine or unlink a flexible sheath, an operation unit, and an operation unit. To provide a highly safe endoscopic treatment instrument system that prevents the occurrence of burn accidents due to erroneous connection of the system so that there is no possibility of high-frequency current flowing through the operation wire when the is used With the goal.

  In order to achieve the above object, an endoscopic treatment instrument system according to the present invention includes a flexible sheath that is inserted into and removed from the distal end side of the endoscope treatment instrument insertion channel, and an insertion / removal into the flexible sheath. An operation unit having an operation wire freely passed through and a distal treatment member connected to the distal end of the operation wire so as to operate at the distal end portion of the flexible sheath by the advancement and retraction of the operation wire; A sheath connecting portion to which a base end connection cap provided at the base end is connected / separably connected and a slide operation member to which a base end connecting member connected to the base end of the operation wire is connected / separably connected In an endoscopic treatment instrument system comprising an operation unit unit having a conductive coil sheath in which a conductive metal coil is exposed on the outer surface and an electrically insulating tube forms the entire outer surface as a flexible sheath You A non-high-frequency operation unit unit that does not have a high-frequency power connection terminal for connecting a high-frequency power cord, and a high-frequency operation unit unit that has a high-frequency power connection terminal. The base end connection cap of the conductive coil sheath can be connected to the sheath connection part of the non-high frequency operation unit, but cannot be connected to the sheath connection part of the high frequency operation unit. The base end connection cap of the sheath can be connected to the sheath connection part of the high-frequency operation unit, but cannot be connected to the sheath connection part of the non-high-frequency operation unit.

  The proximal end connection cap of the conductive coil sheath and the proximal end connection cap of the insulating coating sheath may have the same cross-sectional shape and different diameters, or may have different cross-sectional shapes.

  According to the present invention, the user can arbitrarily combine or unset the flexible sheath, the operation unit, and the operation unit, and the base end connection cap of the conductive coil sheath can be used for the non-high frequency operation unit. It is connectable to the sheath connecting portion of the unit, but cannot be connected to the sheath connecting portion of the high frequency operation unit, and the base end connection cap of the insulating sheath is the sheath connection portion of the high frequency operation unit. Can be connected to the sheath, but cannot be connected to the sheath connection part of the non-high-frequency operation unit. Therefore, when a conductive coil sheath is used as the flexible sheath, a high-frequency current can flow through the operation wire. It is possible to completely prevent the occurrence of burn accidents due to erroneous connection of the system.

  A flexible sheath inserted into and removed from the treatment instrument insertion channel of the endoscope from the distal end side, an operation wire that is detachably inserted into the flexible sheath, and a forward and backward movement of the operation wire A sheath in which an actuating unit having a distal treatment member coupled to the distal end of the operation wire so as to operate at the distal end portion and a proximal end coupling base provided at the proximal end of the flexible sheath are coupled / separably coupled In an endoscope treatment instrument system comprising: an operation unit unit having a connection unit and a slide operation member to which a base end connection member connected to a base end of an operation wire is connected / separably connected; As a conductive sheath, a conductive coil sheath in which a conductive metal coil is exposed on the outer surface and an insulating sheath in which an electrically insulating tube forms the entire outer surface are provided. A non-high-frequency operation unit unit that does not have a high-frequency power connection terminal for connecting a power cord and a high-frequency operation unit unit that has a high-frequency power connection terminal are provided. Can be connected to the sheath connecting portion of the operating unit for the high frequency unit, but cannot be connected to the sheath connecting portion of the operating unit for the high frequency unit. It can be connected to the sheath connecting portion, but cannot be connected to the sheath connecting portion of the non-high frequency operation unit.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a combination of units for non-high-frequency treatment constituting the endoscope treatment instrument system of the present invention.

  Reference numeral 1 denotes a flexible sheath that is inserted into and removed from a treatment instrument insertion channel (not shown) of the endoscope from the distal end side, and a conductive coil sheath 11 provided in a state where the conductive metal coil 1a is exposed to the outer surface as it is. It is formed by.

At the base end of the conductive coil sheath 11, a non-high-frequency base end connection cap 11A made of a rigid body for connecting to the non-high-frequency operation unit unit 3A is attached. The diameter of the insertion portion of the non-high frequency basal end connecting ferrule 11A formed in a cylindrical shape is d _a. 15 is a constricted portion having a smaller diameter than the insertion portion, and 16 is a flange portion having a larger diameter than the insertion portion.

  2 is connected to the distal end of the operation wire 21 so as to be operated at the distal end portion of the flexible sheath 1 by the operation wire 21 that is removably inserted into the flexible sheath 1 and the operation wire 21 is advanced and retracted. It is an operation | movement unit which has the tip treatment member 22 made. A proximal end connecting member 23 that can be connected to the operation unit (both the non-high frequency operation unit unit 3A and the high frequency operation unit unit 3B) is attached to the proximal end of the operation wire 21.

  The non-high-frequency operation unit unit 3A is provided with a non-high-frequency sheath connection part 31A to which a non-high-frequency base end connection cap 11A provided at the base end of the conductive coil sheath 11 is connected / separably connected.

  The non-high-frequency sheath coupling portion 31A formed in a cylindrical shape by a plastic material is divided by a plurality of slits 311 from the front side (left side in the figure), and the non-high-frequency base end coupling base 11A is inserted into the axial position. It is.

At the opening of the non-high frequency sheath coupling portion 31A, a retaining portion 312 having a slightly smaller diameter than the internal space in which the insertion portion of the non-high frequency base end coupling base 11A is accommodated is formed. The inner diameter D _a of the retaining portion 312 is slightly larger than the diameter d _a of the insertion portion of the non-high frequency basal end connecting ferrule 11A. That is, D _a > d _a .

  When the fastening ring 313 that surrounds the outer periphery of the non-high-frequency sheath coupling portion 31A and is rotatably attached around the axis is rotated, the non-high-frequency sheath coupling portion 31A is elastically deformed into a constricted state, and the fastening ring If 313 is reversely rotated, the non-high-frequency sheath coupling portion 31A returns to its original state. Since such a mechanism is known from Patent Document 1 (paragraphs [0020] to [0022]) and the like, detailed description thereof is omitted.

  With such a configuration, as shown in FIG. 2, the non-high-frequency base end connection cap 11A of the conductive coil sheath 11 is inserted into the non-high-frequency sheath connection portion 31A of the non-high-frequency operation unit unit 3A to rotate the fastening ring 313. If this is done, the retaining portion 312 of the non-high frequency sheath coupling portion 31A is narrowed and bites into the constricted portion 15 of the non-high frequency base end coupling base 11A, and the conductive coil sheath 11 becomes non-high frequency operation portion unit 3A. It becomes the state connected to.

  Returning to FIG. 1, reference numeral 32 denotes a slide operation member provided in the non-high-frequency operation unit unit 3 </ b> A for operating the operation wire 21 in the axial direction, and a proximal end connected to the proximal end of the operation wire 21. The connecting member 23 is connected so as to be freely connected / separated and can be slid in the arrow X direction.

  Reference numeral 33 denotes a wire fixing screw member that can be manually screwed / released in order to press and fix the proximal end connecting member 23 of the operating wire 21 to the wire connecting member 34 that slides integrally with the slide operating member 32. The high frequency power supply connection terminal for connecting the high frequency power cord is not provided in the non-high frequency operation unit 3A.

  FIG. 3 shows a combination of units for high-frequency treatment constituting the endoscope treatment instrument system of the present invention. As the flexible sheath 1, an electrically insulating tube 12b forms an entire outer surface. A sheath 12 is used. 12a is a conductive metal coil disposed on the inside thereof, but is not exposed on the outer surface.

The base end of the insulation sheath 12 is attached with a high-frequency base end connection cap 12B made of a rigid body for connection to the high-frequency operation unit 3B. The diameter of the insertion portion of the cylindrically formed for high frequency basal end connecting ferrule 12B is d _b. Reference numeral 15 is a constricted portion, and 16 is a buttocks.

  2 is an operation unit 2 similar to the operation unit 2 shown in FIG. 1, and the base end of the operation wire 21 can be connected to both the non-high frequency operation unit unit 3A and the high frequency operation unit unit 3B. A base end connecting member 23 is attached.

  The high-frequency operation unit 3B is provided with a high-frequency sheath connection portion 31B to which a high-frequency base end connection cap 12B provided at the base end of the insulating sheath 12 is connected / separably connected.

  Similarly to the non-high-frequency sheath coupling portion 31A, the high-frequency sheath coupling portion 31B is divided by a plurality of slits 311 from the front side, and the high-frequency proximal end coupling base 12B is inserted into the axial position. Reference numeral 313 denotes a ring.

A retaining portion 312 having a diameter slightly smaller than the internal space in which the insertion portion of the high-frequency base end coupling cap 12B is accommodated is formed in the opening of the high-frequency sheath coupling portion 31B. The inner diameter D _b of the retaining portion 312 is slightly larger than the diameter d _b of the insertion portion of the high frequency basal end connecting ferrule 12B, it is formed smaller than the diameter d _a of the insertion portion of the non-high frequency basal end connecting ferrule 11A Yes. Therefore, D _a > d _a > D _b > d _b .

  With such a configuration, when the high-frequency base end coupling base 12B is inserted into the high-frequency sheath coupling portion 31B and the fastening ring 313 is rotated, as in the case of the unit for non-high-frequency treatment shown in FIG. The retaining portion 312 of the high-frequency sheath coupling portion 31B is narrowed and bites into the constricted portion 15 of the high-frequency proximal end coupling base 12B, and the insulation sheath 12 is coupled to the high-frequency operation unit unit 3B. Become.

  32 and 33 shown in FIG. 3 are the same slide operation member and wire fixing screw member as those in the non-high frequency operation unit unit 3A shown in FIG. However, a high frequency power supply connection terminal 35 for connecting a high frequency power cord (not shown) is provided in the cylindrical portion of the wire fixing screw member 33 of the high frequency operation unit 3B, and there is a high frequency power cord there. By connecting a high frequency current to the operation wire 21 can be performed.

In such a configuration of the entire system, as shown in FIG. 4, even if the conductive coil sheath 11 shown in FIG. 1 is to be connected to the high-frequency operation unit unit 3B shown in FIG. The diameter d _a of the insertion portion of the base end connection base 11A is larger than the inner diameter D _b of the retaining portion 312 of the high frequency sheath connection portion 31B of the high frequency operation unit unit 3B (ie, d _a > D _b ). The high-frequency base end connection cap 11A cannot be inserted into the high-frequency sheath connection portion 31B. Therefore, the conductive coil sheath 11 cannot be connected to the high frequency operation unit 3B.

Further, FIG. As shown in 5, also the insulating coating sheath 12 attempts to connect to a non-high-frequency operation section unit 3A shown in FIG. 1, shown in FIG. 3, D _a >> d _b So high frequency proximal The connection cap 12B is too thin with respect to the hole of the retaining portion 312 of the non-high frequency sheath connection portion 31A and cannot be fixed to the non-high frequency sheath connection portion 31A. Accordingly, the insulating sheath 12 cannot be connected to the non-high frequency operation unit 3A.

  In addition, this invention is not limited to the said Example, For example, the cross-sectional shape of each insertion part of 11 A of non-high frequency base end connection caps and the high frequency base end connection base 12B, and the non-high frequency sheath corresponding to it As shown in FIG. 6, the cross-sectional shape of each retaining portion 312 of the coupling portion 31A and the high-frequency sheath coupling portion 31B is a square and a regular hexagon having substantially the same size as that shown in FIG. As shown in FIG. 7, compatibility may be lost due to a difference in shape, for example, by eliminating a compatibility by making a perfect circle and an ellipse thinner and longer than that, for example. In these cases, the non-high-frequency base end connection base 11A cannot be inserted into the high-frequency sheath connection part 31B, and the high-frequency base end connection base 12B cannot be inserted into the non-high-frequency sheath connection part 31A. .

It is side surface sectional drawing which shows the combination of the unit for the non-high frequency treatment of the Example of this invention. It is side surface sectional drawing which shows the connection state of the unit for the non-high frequency treatment of the Example of this invention. It is side surface sectional drawing which shows the combination of the unit for the high frequency treatment of the Example of this invention. FIG. 5 is a side cross-sectional view showing a state where the conductive coil sheath cannot be connected to the high-frequency operation unit unit in the endoscope treatment instrument system according to the embodiment of the present invention. FIG. 5 is a side cross-sectional view showing a state where the insulation coating sheath cannot be connected to the non-high frequency operation unit unit in the endoscope treatment instrument system according to the embodiment of the present invention. It is the schematic which shows the cross-sectional shape of the connection part of the sheath and operation part of the modification of this invention. It is the schematic which shows the cross-sectional shape of the connection part of the sheath and operation part of the 2nd modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flexible sheath 2 Actuation unit 3A Non-high-frequency operation part unit 3B High-frequency operation part unit 11 Conductive coil sheath 11A Non-high-frequency base end connection base 12 Insulation sheath 12B High-frequency base end connection base 21 Operation wire 22 End treatment member 23 Base end connection member 31A Non-high frequency sheath connection portion 31B High frequency sheath connection portion 32 Slide operation member 35 High frequency power supply connection terminal 312 Retaining portion

Claims (3)

A flexible sheath that is inserted into and removed from the treatment instrument insertion channel of the endoscope from the distal end side;
An operation wire that is removably inserted into the flexible sheath, and a distal treatment member coupled to the distal end of the operation wire so as to operate at the distal end portion of the flexible sheath by advancing and retreating operation of the operation wire. An actuating unit having
A sheath connecting portion to which a base end connection cap provided at a base end of the flexible sheath is connected / separably connected and a base end connecting member connected to the base end of the operation wire are connected / separated. An operation unit having a slide operation member,
In an endoscopic treatment instrument system comprising:
As the flexible sheath, a conductive coil sheath in which a conductive metal coil is exposed on the outer surface, and an insulating sheath in which an electrically insulating tube forms the entire outer surface are provided,
As the operation unit, a non-high-frequency operation unit unit that does not have a high-frequency power connection terminal for connecting a high-frequency power cord and a high-frequency operation unit unit that has the high-frequency power connection terminal are provided.
The base end connection cap of the conductive coil sheath is connectable to the sheath connection portion of the non-high frequency operation unit, but cannot be connected to the sheath connection unit of the high frequency operation unit.
The base end connection cap of the insulation sheath is connectable to the sheath connection part of the high-frequency operation unit unit, but cannot be connected to the sheath connection part of the non-high-frequency operation unit unit. An endoscopic treatment instrument system.   The treatment instrument system for an endoscope according to claim 1, wherein the proximal end connection base of the conductive coil sheath and the proximal end connection base of the insulation sheath have the same cross-sectional shape and different diameters.   The endoscopic treatment instrument system according to claim 1, wherein a cross-sectional shape is different between a base end connection cap of the conductive coil sheath and a base end connection cap of the insulation coating sheath.

Images