Handle assembly and endoscope treatment instrument

Abstract

This invention provides a handle assembly and an endoscope treatment device. The endoscope treatment device reliably ensures electrical connection between a connector supplied with high-frequency current and longitudinal components such as wire members connected to a high-frequency treatment device. The handle assembly includes: a handle body; a transmission member that transmits high-frequency current; a conductive connector extending in a direction intersecting the length axis of the transmission member; and a conductive elastomer that applies force to the transmission member in the direction of extension toward the connector and pushes the transmission member toward the connector. The elastomer contacts the transmission member in a compressed state, and while the transmission member is pressed against the connector, the transmission member is slidable relative to the connector.

Description

Technical Field

[0001] This utility model relates to an endoscope treatment device. This application claims the benefit of U.S. Provisional Application No. 63 / 569,475, filed March 25, 2024, the entire contents of which are incorporated herein by reference. Background Technology

[0002] In the past, endoscopic treatment instruments used in endoscopic procedures included hemostatic forceps for cauterizing bleeding objects to stop bleeding, high-frequency electrosurgical units, and other high-frequency treatment devices that energize high-frequency currents. High-frequency current was supplied to longitudinal members such as wire members connected to the high-frequency treatment devices via a power cable connected to a connector located in the operating part of the endoscopic treatment instrument (e.g., Patent Document 1, Patent Document 2).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2008-295905

[0006] Patent Document 2: Japanese Patent Application Publication No. 2009-034388 Utility Model Content

[0007] Problems to be solved by utility models

[0008] However, in endoscopic treatment devices equipped with high-frequency processing devices, if the electrical connection between the connector supplied with high-frequency current and the longitudinal components such as the wire member connected to the high-frequency processing device cannot be reliably ensured, the high-frequency processing device cannot perform well.

[0009] Based on the above, the purpose of this utility model is to provide a handle assembly and an endoscope treatment device that can reliably ensure the electrical connection between the connector supplied with high-frequency current and the longitudinal components such as the wire member connected to the high-frequency processing device.

[0010] Solution for solving the problem

[0011] To address the aforementioned issues, this utility model proposes the following methods.

[0012] The first embodiment of the present invention provides a handle assembly, characterized in that the handle assembly comprises: a handle body; a transmission member for transmitting high-frequency current; a conductive connector extending in a direction intersecting the length axis of the transmission member; and an elastic body that pushes the transmission member toward the connector, the elastic body contacting the transmission member, and the transmission member being able to slide relative to the connector while the transmission member is being pushed toward the connector.

[0013] The second embodiment of the handle assembly of this utility model is based on the first embodiment of the handle assembly, characterized in that a plug is provided at the first end of the conductive connector, the plug being capable of being connected to a power cable that transmits the high-frequency current, and a through-path extending along the length axis of the handle body is formed at the second end of the conductive connector, the transmission member being inserted into the through-path, and the transmission member being pushed against the inner surface of the through-path by the elastomer.

[0014] The third embodiment of the handle assembly of this utility model is based on the handle assembly of the first embodiment, characterized in that the transmission member includes a tube member, a wire member passes through the tube member, the elastic body is in direct contact with the tube member, and pushes the tube member toward the connector.

[0015] The fourth embodiment of the present invention is based on the first embodiment of the handle assembly, characterized in that the elastic body is a helical compression spring.

[0016] The fifth embodiment of the present invention is a handle assembly according to the first embodiment, characterized in that the elastomer is configured to be sandwiched between the transmission member and the connector in a compressed state.

[0017] The sixth embodiment of the present invention provides a handle assembly according to the first embodiment, characterized in that the connector has: a first end having a plug capable of connecting to a power cable for transmitting the high-frequency current; and a second end toward which the transmission member is pressed, the connector having a flange located between the plug and the transmission member, the elastomer being configured to be clamped between the transmission member and the flange in a compressed state, the elastomer applying force to the transmission member toward the second end.

[0018] The seventh embodiment of the present invention is based on the sixth embodiment of the handle assembly, characterized in that the elastic body is a helical compression spring, and at least a portion of the connector penetrates the compression spring.

[0019] The handle assembly of the eighth embodiment of this utility model is based on the handle assembly of the second embodiment, characterized in that, in the state where the transmission member is pressed against the second end of the connector by the elastomer, the transmission member flexes toward the second end of the connector.

[0020] The ninth embodiment of the present invention is a handle assembly according to the first embodiment, characterized in that, when the transmission member is pressed against the connector, the transmission member is capable of sliding relative to the connector in a direction about the length axis of the transmission member.

[0021] The handle assembly of the tenth embodiment of this utility model is based on the handle assembly of the first embodiment, characterized in that, in the state where the transmission member is pressed against the connector, the transmission member is capable of sliding relative to the connector in a direction along the length axis of the transmission member.

[0022] The handle assembly of the eleventh aspect of this utility model is based on the handle assembly of the first aspect, characterized in that the elastomer is conductive, applies force to the transmission member in the extension direction of the connector, and contacts the transmission member in a compressed state.

[0023] The twelfth embodiment of this utility model is a handle assembly, characterized in that the handle assembly comprises: a handle body; a transmission member for transmitting high-frequency current; a conductive connector extending in a direction intersecting the transmission member; and a spring disposed in a compressed state between the transmission member and the connector, wherein the transmission member and the spring are in direct contact, thereby electrically connecting the transmission member and the connector.

[0024] The handle assembly of the thirteenth embodiment of this utility model, according to the handle assembly of the twelfth embodiment, is characterized in that the transmission member and the spring are in direct contact, thereby the transmission member, the spring and the connector are electrically connected.

[0025] The fourteenth embodiment of this utility model is an endoscope treatment device, characterized in that the endoscope treatment device comprises: a sheath; an end effector disposed at the front end of the sheath; a longitudinal member connected to the end effector; and a handle assembly as described in any one of the first to thirteenth embodiments, wherein the transmission member transmits a high-frequency current to the longitudinal member.

[0026] The fifteenth aspect of this utility model discloses an endoscopic treatment device, characterized in that the endoscopic treatment device comprises: a sheath; an end effector disposed at the front end of the sheath; a handle connected to the base end of the sheath; a longitudinal member connected to the end effector; and a transmission member for transmitting high-frequency current to the longitudinal member, wherein the handle has: a conductive connector extending in a direction intersecting the transmission member; and an elastomer that pushes the transmission member toward the connector, wherein the transmission member is slidable relative to the connector while being pressed against the connector.

[0027] According to the sixteenth embodiment of the present invention, the endoscope treatment device is based on the fifteenth embodiment of the endoscope treatment device, characterized in that a plug is provided at the first end of the conductive connector, the plug being connectable to a power cable for transmitting the high-frequency current, a through path extending along the length axis of the handle is formed at the second end of the conductive connector, the connector having a flange located between the plug and the transmission member, and the elastomer being configured to be clamped between the transmission member and the flange in a compressed state, the elastomer applying force to the transmission member toward the second end.

[0028] The seventeenth embodiment of the present invention is an endoscope treatment device according to the fifteenth embodiment, characterized in that the longitudinal member penetrates the sheath, and the end effector rotates relative to the sheath.

[0029] The endoscopic treatment device of the eighteenth embodiment of this utility model, according to the endoscopic treatment device of the fifteenth embodiment, is characterized in that the longitudinal member has a linear member.

[0030] The nineteenth embodiment of the present invention is an endoscope treatment device according to the eighteenth embodiment, characterized in that the transmission member has a tubular member, and the elastic body contacts the tubular member in a compressed state, thereby applying force to the tubular member.

[0031] According to the 15th embodiment of the endoscopic treatment device of the present invention, the connector has a through-path, the transmission member passes through the through-path, and the elastomer causes a force to act so as to electrically connect at least part of the transmission member and the through-path.

[0032] The endoscopic treatment device of the 21st embodiment of this utility model, according to the 15th embodiment of the endoscopic treatment device, is characterized in that the elastic body is a helical spring, and the pitch of the end turns at both ends of the helical spring is narrower than that of the other parts.

[0033] According to the 15th embodiment of the endoscopic treatment device of the present invention, the connector is disposed at a position away from the transmission member, and the elastomer electrically connects the transmission member and the connector by applying a force to the transmission member.

[0034] The endoscopic treatment device of the 23rd embodiment of this utility model, according to the endoscopic treatment device of the 15th embodiment, is characterized in that the elastomer is disposed on both sides sandwiching the transmission member.

[0035] Effects of the utility model

[0036] The endoscope processing device of this invention can reliably ensure the electrical connection of the connector supplied with high-frequency current and the longitudinal components such as the wire component connected to the high-frequency processing device. Attached Figure Description

[0037] Figure 1 This is an overall diagram of the endoscopic treatment system according to the first embodiment.

[0038] Figure 2 This is an overall diagram showing the endoscopic treatment instruments of the endoscopic treatment system.

[0039] Figure 3 This is a cross-sectional view of the operating section of the endoscopic treatment device.

[0040] Figure 4 This is a cross-sectional view of the slider of the operating part.

[0041] Figure 5 This is a diagram showing the helical spring of the operating part.

[0042] Figure 6 This is a cross-sectional view of the helical spring.

[0043] Figure 7 This is a diagram showing an elastic spring as a variation of the helical spring.

[0044] Figure 8 This is a diagram showing another way of representing the helical spring.

[0045] Figure 9 This is a diagram showing another way of representing the helical spring.

[0046] Figure 10 This is a cross-sectional view of the operating section of the endoscope treatment device according to the second embodiment.

[0047] Figure 11 This is a diagram showing a leaf spring, a modified example of the helical spring that serves as the operating part.

[0048] Figure 12 This is a diagram representing the leaf spring.

[0049] Figure 13 This is a diagram representing the leaf spring.

[0050] Figure 14 This is a cross-sectional view of the operating section of the endoscope treatment device according to the third embodiment.

[0051] Figure 15 This is a cross-sectional view of the operating section of the endoscope treatment device according to the fourth embodiment.

[0052] Figure 16This is a 3D view of the operating unit.

[0053] Figure 17 This is a diagram showing the energizing path from the self-energizing connector to the tube component.

[0054] Figure 18 This is a diagram showing a variation of the aforementioned operating unit.

[0055] Figure 19 This is a diagram representing the processing unit (end effector).

[0056] Explanation of reference numerals in the attached figures

[0057] 300. Endoscopic treatment system; 200. Endoscope; 100, 100B, 100C, 100E. Endoscopic treatment apparatus; 110. Treatment unit (end-effector); 1. Sheath; 13. Coil sheath; 2. Longitudinal member; 21. Wire member (longitudinal member); 2A. Transmission member; 22. Tube member (transmission member); 3. Support member; 4. Pliers (pliers member); 41. First pliers blade; 42. Second pliers blade; 5. 5B, 5C, 5D, 5E. Operating unit (handle, handle assembly); 6. 6E. Handle body; 6s. Internal space; 60. First handle body; 61. Second handle body; 62. Thumb ring; 64. Connecting 65. Connector support; 66. Through hole; 67. Socket; 68. Coil spring support; 79. Fitting part; 70. Upper end (second end); 71. Connecting part; 72. Through path; 73. Engaging part (second end); 74. Power plug (first end); 75. Reduced diameter part; 76. Flange; 8. Sliding member; 81. Operating line support; 9. Coil spring (elastic member, elastic body); 9A. Elastic spring (elastic member, elastic body); 9B. Coil spring (elastic member, elastic body); 9G. Leaf spring (elastic member, elastic body); 9C. Coil spring (elastic member, elastic body). Detailed Implementation

[0058] (First Implementation)

[0059] Reference Figures 1-9 This invention describes an endoscope treatment system 300 comprising an endoscope treatment appliance 100 according to a first embodiment of the present invention. Figure 1 This is an overall diagram of the endoscopic treatment system 300.

[0060] [Endoscopic handling system 300]

[0061] like Figure 1 As shown, the endoscope treatment system 300 includes an endoscope treatment device 100 and an endoscope 200. The endoscope treatment device 100 is inserted into the endoscope 200 and used.

[0062] [Endoscope 200]

[0063] Endoscope 200 is a known flexible endoscope, comprising an insertion part 210 inserted into the body from the tip, an operation part 220 mounted at the base of the insertion part 210, and a universal cable 230 mounted on the operation part 220.

[0064] The insertion part 210 is a slender, longitudinally elongated member capable of being inserted into a lumen. The insertion part 210 has a front end portion 211, a curved portion 214, and a flexible portion 215. The front end portion 211, the curved portion 214, and the flexible portion 215 are connected sequentially from the front end side. Inside the insertion part 210 is a channel 216 for inserting an endoscopic instrument 100. The front end portion 211 has a front opening 212 of the channel 216 and a camera portion 213.

[0065] The camera unit 213 is equipped with an image sensor such as a CCD or CMOS, and is capable of capturing images of the area to be processed. The bending part 214 bends according to the user's operation of the operating unit 220. The flexible part 215 is a flexible tubular part.

[0066] The operating unit 220 is connected to the flexible part 215. The operating unit 220 has a gripping part 221, an input part 222, and a clamping jaw 223. The gripping part 221 is a member supported by the user. The input part 222 receives an operating input for bending the bending part 214. The clamping jaw 223 is the base opening of the channel 216.

[0067] A general-purpose cable 230 connects the endoscope handling device 100 to external equipment. A camera cable, fiber optic cable, or similar cable is inserted into the general-purpose cable 230 to output the camera signal obtained by the camera unit 213 to the outside.

[0068] [Endoscopic treatment instruments 100]

[0069] Figure 2 This is an overall view of the endoscopic treatment device 100.

[0070] The endoscopic treatment instrument 100 (also referred to as treatment instrument 100) is a hemostatic forceps used to cauterize and stop bleeding in a affected area. The treatment instrument 100 includes a sheath 1 and a longitudinal member 2 (see reference). Figure 3 ), Transfer component 2A (refer to) Figure 3 ), support member 3, forceps (forceps member) 4, and operating part 5. In the following description, along the length axis A of the treatment device 100, the side that is inserted into the patient's body will be referred to as "the front side (distal side) A1" and the side of the operating part 5 will be referred to as "the base side (proximal side) A2".

[0071] The sheath 1 is flexible and has a longitudinally elongated coil sheath 13 extending from the front end 1a to the base end 1b. The sheath 1 has an outer diameter capable of insertion into the channel 216 of the endoscope 200. The sheath 1 may also be insulating; for example, the coil sheath 13 may be covered by a heat-shrinkable tube made of resin. Figure 1 As shown, with the sheath 1 inserted into the channel 216, the front end 1a of the sheath 1 can protrude into the front opening 212 of the channel 216. The base end 1b of the sheath 1 is connected to the operating part 5.

[0072] Figure 3 This is a cross-sectional view of the operating section 5.

[0073] The elongated member 2 penetrates the internal space of the coil sheath 13. The front end of the elongated member 2 is connected to the clamp 4, and the base end of the elongated member 2 is connected to the operating part 5. The elongated member 2 is conductive, transmitting high-frequency current to the clamp 4. The elongated member 2 is preferably a metal wire member 21. However, the elongated member 2 is not limited to a wire member 21; it can also be a conductive member such as a metal spiral tube.

[0074] The transmission member (shaft) 2A penetrates the internal space 6s of the handle body 6. The transmission member 2A is preferably a tube member 22. In addition, the transmission member 2A is not limited to tube member 22, as long as it is a member that is at least partially conductive and has a stiffness higher than that of the wire member 21.

[0075] The front end of the wire member 21 is connected to the pliers 4 via the support member 3. The base end of the wire member 21 passes through the tube member (transfer member) 22 in the handle body 6. The wire member 21 and the tube member 22 are fixed in place so that they cannot move relative to each other, for example by chemical bonding such as adhesive or mechanical bonding such as riveting. The wire member 21 passes through the coil sheath 13, and the front end of the tube member 22 is inserted into the base end 13a of the coil sheath 13.

[0076] The support member 3 is located at the front end 1a of the sheath 1, supporting the pliers 4 so that they can be opened and closed. The support member 3 has a linkage mechanism 34 that converts the forward and backward movement of the wire member 21 into the opening and closing movement of the pliers 4 (see reference). Figure 19 ).

[0077] The forceps (forceps component) 4 is a component for grasping biological tissue. The forceps 4 is supported by the support member 3 and can be opened and closed toward the front end A1. The forceps 4 is made of a metal material such as stainless steel and has a first forceps plate 41 and a second forceps plate 42. The support member 3 and the forceps 4 constitute a "treatment unit (end effector) 110" for treating the affected area. The forceps 4 is an example of a high-frequency treatment device.

[0078] like Figure 2As shown, the operating part (handle, handle assembly) 5 is provided on the base end side A2 of the sheath 1. The operating part 5 includes a handle body 6, an electrical connector 7, a slider 8, and a coil spring 9. In this embodiment, the electrical connector 7 is mounted on the handle body 6.

[0079] In the following description of the operating section 5, the direction in which the electrical connector 7 is located relative to the handle body 6 is designated as the lower side B2 in the vertical direction B, and the opposite side of the lower side B2 in the vertical direction B is designated as the "upper side B1". In addition, the direction perpendicular to the length axis direction A and the vertical direction B is designated as the "width direction C" or the "left-right direction C". The direction to the right when viewing the base end side A2 from the front end side A1 is designated as the "right side C1" in the width direction C, and the direction to the left is designated as the "left side C2" in the width direction C.

[0080] like Figure 3 As shown, the handle body 6 has an internal space 6s through which the wire member 21 can pass. The wire member 21 extends through the internal space of the sheath 1 and the internal space 6s of the handle body 6 to the slider 8. The handle body 6 has a thumb ring 62, a connector support 64, and a coil sheath support 69.

[0081] The handle body 6 has a first handle body 60 and a second handle body 61. The second handle body 61 is connected to the base end of the first handle body 60. The first handle body 60 and the second handle body 61 are rotatably connected relative to each other about a rotation axis extending along the length axis direction A. The internal space 6s is a continuous space formed in the first handle body 60 and the second handle body 61. The internal space 6s has an internal space 6t formed in the first handle body 60 and an internal space 6u formed in the second handle body 61.

[0082] A thumb ring 62 is located at the base A2 of the second handle body 61. The surgeon passes his thumb through the thumb ring 62 to support the second handle body 61.

[0083] like Figure 3 As shown, a connector support 64 is provided on the first handle body 60. The connector support 64 supports the electrical connector 7. The connector support 64 has a through hole 65 extending in the vertical direction B, a cylindrical insertion hole 66 formed on the lower side B2 of the through hole 65, and a coil spring support 67.

[0084] like Figure 3 As shown, the electrical connector 7 is supported by the connector support 64 and is a conductive member extending in a direction intersecting the length axis of the tube member 22, and is formed in a generally cylindrical shape. Furthermore, "generally cylindrical" includes not only a strictly cylindrical shape but also a shape that approximates a cylindrical shape. In this embodiment, the electrical connector 7 extends in the vertical direction B.

[0085] The electrical connector 7 has an upper end portion 70, a connecting portion 71, a power plug 74, a reduced diameter portion 75, and a flange 76. The electrical connector 7 extends between the power plug (first end portion) 74 and the upper end portion 70 supported by the helical spring support portion 67. The connecting portion 71 and the reduced diameter portion 75 are located between the power plug 74 and the upper end portion 70. The upper end portion 70 is provided on the upper side B1 of the connecting portion 71. The extending direction of the electrical connector 7 intersects the extending direction of the tube member 22 (wire member 21).

[0086] The connecting portion 71 is generally cylindrical and is located on the upper side B1 of the electrical connector 7. The connecting portion 71 is connected to the tube member 22 within the internal space 6t of the first handle body 60. A through path 72 is formed in the connecting portion 71. That is, a through path 72 extending along the longitudinal axis of the first handle body 60 is formed at the base end of the electrical connector 7.

[0087] A tube member 22 is inserted into the through-path 72. That is, the through-path 72 is a through hole formed along the longitudinal axis direction A of the tube member 22, through which the tube member 22 and the wire member 21 passing within the tube member 22 can move forward and backward. In the following description, the portion of the wire member 21 and the tube member 22 that can pass through the through-path 72 is also referred to as the "base end connection portion 2b".

[0088] The power plug 74 is a plug located on the lower side B2 (first end of the electrical connector 7) of the electrical connector 7, and is connected to a power cable (active cable).

[0089] A reduced diameter portion 75 is located in the middle of the vertical direction B and is between the through-path 72 and the power plug 74. The outer diameter of the reduced diameter portion 75 is smaller than the outer diameter of the connecting portion 71 and the outer diameter of the power plug 74. The reduced diameter portion 75 passes through the through hole 65 of the first handle body 60 and is fixed therein. Specifically, by providing a flange 76 between the reduced diameter portion 75 and the connecting portion 71 and by clamping a portion of the connector support portion 64 between the flange 76 and the power plug 74, the electrical connector 7 is mechanically fixed to the first handle body 60 (connector support portion 64). However, the method of fixing the electrical connector 7 and the first handle body 60 is not limited to this; it can also be fixed by means of adhesives or the like.

[0090] The connecting portions 71 and the power plug 74, which are arranged on both sides of the reduced diameter portion 75 in the vertical direction B, cannot penetrate the through hole 65 of the first handle body 60. The connecting portions 71 and the power plug 74 engage with the openings at both ends of the through hole 65 in the vertical direction B, thereby limiting the range of movement of the electrical connector 7 in the vertical direction B to a predetermined range.

[0091] The through hole 65 is a through hole through which the reduced diameter portion 75 of the power supply connector 7 passes. The length of the through hole 65 in the vertical direction B can also be slightly shorter than the length of the reduced diameter portion 75 in the vertical direction B.

[0092] The socket 66 is cylindrical and surrounds the power plug 74 of the electrical connector 7. A gap is provided between the power plug 74 of the electrical connector 7 and the socket 66 for installing a power cable (active cable).

[0093] The electrical connector (connecting member, plug) 7 can be connected to a high-frequency power supply device (not shown) via a power cable, and is electrically and physically connected to the base connection portion 2b. The base connection portion 2b, which connects to the electrical connector 7, is not equipped with a coil sheath 13, but instead has a wire member 21 and a tube member 22. The electrical connector 7 can supply high-frequency current from the high-frequency power supply device to the clamp 4 via the tube member 22 and the wire member 21.

[0094] The helical spring support 67 is a circular recess on its inner circumference, which supports the helical spring 9.

[0095] The coil sheath support 69 supports the base end of the coil sheath 13 in a manner that allows it to rotate about its length axis but does not move forward or backward relative to the handle body 6 along the length axis direction A. Figure 3 As shown, the front end of the tube member 22 overlaps with the base end of the coil sheath 13 within the handle body 6. An electrical connector 7 is disposed on the front end side A1 of the tube member 22. Along the longitudinal axis A of the wire member 21, the base end 13p of the coil sheath 13 is disposed between the front end 22b of the tube member 22 and the electrical connector 7.

[0096] Figure 4 This is a cross-sectional view of slider 8.

[0097] The slider 8 is retractable along the length axis direction A of the second handle body 61. The slider 8 is retractable relative to the second handle body 61 along the length axis. The base end of the wire member 21 and the base end of the tube member 22 are connected to the slider 8. The surgeon moves the slider 8 relative to the second handle body 61, thereby moving the wire member 21 and the tube member 22. The surgeon rotates the second handle body 61 and the slider 8 relative to the first handle body 60 about the length axis, thereby rotating the wire member 21 and the tube member 22.

[0098] The sliding member 8 has an operating line support portion 81 that supports the line member 21 and the tube member 22. The line member 21 and the tube member 22 are fixed to the operating line support portion 81. Specifically, the line member 21 and the tube member 22 are fixed to the operating line support portion 81 by passing through it in an S-shape between the two separate operating line support portions 81. Furthermore, it is not necessary to fix both the line member 21 and the tube member 22 to the sliding member 8. For example, the base end of the line member 21 can be fixed to any position of the tube member 22, and only the tube member 22 can be fixed to the sliding member 8. In addition, the tube member 22 does not need to be a strictly tubular member. As long as it functions as a transmission member 2A, it can be a tube member with a spiral groove or a metal spiral tube with high rigidity.

[0099] Figure 5 This is a diagram representing helical spring 9.

[0100] The helical spring (elastic member, elastic body) 9 electrically connects the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7 by applying a force to the tube member 22. The helical spring 9 is supported by the helical spring support 67 and is able to elastically deform along the vertical direction B. That is, the helical spring 9 is supported by the helical spring support 67 (recess) and is able to elastically deform along the extension direction of the electrical connector 7. The helical spring 9 is a conductive compression spring, and the elastic force acts in the direction extending along the vertical direction B. Specifically, the helical spring 9 is in direct contact with the tube member 22 and pushes the tube member 22 toward the electrical connector 7 (the connection part 71 of the electrical connector 7). While applying a force to the tube member 22 toward the electrical connector 7 (the connection part 71 of the electrical connector 7), the helical spring 9 also pushes the tube member 22 toward the inner surface of the through-path 72 of the electrical connector 7. The helical spring 9 is in contact with the tube member 22 in a compressed state. While the tube member 22 is pressed against the inner surface of the through-path 72 of the electrical connector 7, the tube member 22 and the wire member 21 passing through the tube member 22 can move forward and backward relative to the electrical connector 7 within the through-path 72, and can also rotate relative to the electrical connector 7. That is, while the tube member 22 is pressed against the electrical connector 7, the tube member 22 and the wire member 21 passing through the tube member 22 can move forward and backward (slide) relative to the electrical connector 7 along the length axis of the tube member 22, and can also rotate (slide) relative to the electrical connector 7 in a direction about the length axis of the tube member 22.

[0101] In this embodiment, the upper end (second end) 70 of the electrical connector 7 is inserted into the helical spring 9. The helical spring 9 is disposed in a compressed state between the bottom surface of the recess of the helical spring support 67 and the tube member 22. The helical spring 9 pushes the tube member 22 through the through-path 72 downward to B2 by applying force, thereby establishing at least a partial electrical connection between the tube member 22 (the wire member 21 passing through the tube member 22) and the through-path 72 of the electrical connector 7.

[0102] Figure 6 This is a cross-sectional view of the helical spring 9.

[0103] In this embodiment, an end turn 91 is provided at the lower end (the portion in contact with the tube member 22) of the helical spring 9. The end turn 91 has, for example, one or two turns. Because the pitch of the helix in the end turn 91 is narrow, the tube member 22 will not enter the end turn 91. Specifically, the pitch of the helix in the end turn 91 is smaller than the outer diameter of the tube member 22 that passes through the through-path 72. Therefore, even when the tube member 22 rotates, it is possible to prevent the tube member 22 from entering the interior of the helical spring 9 from the lower end (B2) of the helical spring 9, and the smooth rotation of the tube member 22 will not be hindered. Alternatively, the upper end of the helical spring 9 may also have an end turn with a similarly narrow pitch.

[0104] In this embodiment, the upper end 70 of the electrical connector 7 is inserted into the helical spring 9. Therefore, the helical spring 9 can push the tube member 22 downwards to the B2 from both sides across the electrical connector 7. Thus, a stable electrical connection can be achieved between the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7. Furthermore, the contact area between the tube member 22 and the electrical connector 7 is relatively large. Therefore, an increase in resistance caused by a small contact area between the tube member 22 and the electrical connector 7 can be prevented. However, if the elastic force of the helical spring 9 is too strong, there is a concern that the through-path 72 will come into excessive and forceful contact with the tube member 22, affecting the forward and backward movement of the tube member 22 and the forward and backward movement of the slider 8. Therefore, it is desirable that the helical spring 9 has an elastic force that does not cause excessive resistance to the forward and backward movement of the slider 8. Similarly, it is desirable that the helical spring 9 has an elastic force that does not cause excessive resistance to the rotational movement of the tube member 22 and the rotational movement of the slider 8.

[0105] The surgical operator moves the forceps 4 forward, backward, or rotates it by holding the slider 8 and performing forward, backward, or rotation operations to position the forceps 4 in the appropriate treatment position. Even when the slider 8 moves forward or backward relative to the second handle body 61 or when the second handle body 61 and the slider 8 rotate relative to the first handle body 60, the coil spring 9 presses the tube member 22 against the electrical connector 7, thereby reliably ensuring the electrical connection of the tube member 22, the wire member 21 passing through the tube member 22, and the electrical connector 7.

[0106] Even when the slider 8 is rotated around the length axis of the sheath 1, the power cable (active cable) connected to the electrical connector 7 will not get tangled in the operating part 5 because the electrical connector 7 does not rotate around the length axis of the sheath 1.

[0107] The surgical operator supplies a high-frequency current to the base connection 2b (wire member 21 and tube member 22). Regardless of which direction the operating part 5 faces vertically downwards from the direction perpendicular to the length axis A, at least a portion of the through-path 72 can make electrically contact with the tube member 22. Therefore, regardless of the orientation of the operating part 5, a high-frequency current can be supplied from the electrical connector 7 to the wire member 21 and the tube member 22, enabling the use of forceps 4 to perform hemostasis, incision, and other procedures on bleeding sites.

[0108] According to the endoscopic treatment device 100 of this embodiment, the electrical connection between the electrical connector 7 supplied with high-frequency current and the wire member 21 and tube member 22 connected to the pliers 4 can be reliably ensured regardless of the posture of the operating part 5.

[0109] The first embodiment of this utility model has been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment, and design changes that do not depart from the spirit of this utility model are also included. In addition, the constituent elements shown in the above embodiments and variations can be appropriately combined to form a configuration.

[0110] Figure 7 This is a diagram showing an elastic spring 9A, which is a modified example of a helical spring 9.

[0111] The elastic spring (elastic member, elastic body) 9A is an elastic component such as rubber. Similar to the coil spring 9, the elastic spring 9A electrically connects the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7 by applying a force to the tube member 22. That is, the elastic member that electrically connects the tube member 22 and the electrical connector 7 can be a conductor like the coil spring 9, or a non-conductive material like the elastic spring 9A.

[0112] Figure 8 This is a diagram showing another way of representing the helical spring 9.

[0113] Alternatively, the helical spring 9 may not be positioned on the outer periphery of the upper end 70 of the electrical connector 7. For example... Figure 8 As shown, the coil spring 9 can also be positioned away from the electrical connector 7 and apply force to the tube member 22, thereby electrically connecting the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7.

[0114] Figure 9This is a diagram showing another way of representing the helical spring 9.

[0115] Multiple helical springs 9 can also be configured. Multiple helical springs 9 enable proper connection between the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7.

[0116] (Second Implementation)

[0117] Reference Figure 10 This description describes the endoscopic treatment device 100B according to the second embodiment of the present invention. In the following description, the same reference numerals are used for structures that are common to those already described, and repeated descriptions are omitted.

[0118] [Endoscopic treatment device 100B]

[0119] Endoscopic treatment instrument 100B (also known as treatment instrument 100B) is a hemostatic forceps used to cauterize and stop bleeding in a affected area. Treatment instrument 100B includes a sheath 1, a longitudinal member 2, a transmission member 2A, a support member 3, forceps (forceps member) 4, and an operating part 5B.

[0120] Figure 10 This is a sectional view of the operating unit 5B.

[0121] An operating part (handle, handle assembly) 5B is provided on the base end side A2 of the sheath 1. The operating part 5B includes a handle body 6, an electrical connector 7B, a slider 8, and a coil spring 9B. In this embodiment, the electrical connector 7B is mounted on the handle body 6.

[0122] The electrical connector (connecting member, plug) 7B can be connected to a high-frequency power supply device (not shown) via a power cable, and is electrically connected to the tube member 22 (the base end of the wire member 21) via a helical spring 9B. The base end connection portion 2b connected to the electrical connector 7B is not equipped with a coil sheath 13, but instead has the wire member 21 and the tube member 22. The electrical connector 7B can supply high-frequency current from the high-frequency power supply device to the clamp 4 via the tube member 22 and the wire member 21. The electrical connector 7B is positioned away from the wire member 21 and the tube member 22.

[0123] The handle body 6 has a connector support 64. The connector support 64 is provided on the first handle body 60. The electrical connector 7B is supported by the connector support 64 and is formed into a generally cylindrical shape extending in a direction intersecting the length axis of the tube member 22. Furthermore, "generally cylindrical" includes not only a strictly cylindrical shape but also a shape that is approximately cylindrical. In this embodiment, the electrical connector 7B extends in the vertical direction B.

[0124] Electrical connector 7B extends in a direction intersecting the length axis of tube member 22. Electrical connector 7B has an engaging portion 73, a power plug 74, and a reduced diameter portion 75. Engaging portion 73 is located at the upper end of electrical connector 7B and engages with helical spring 9B. Electrical connector 7B extends between power plug (first end) 74 and engaging portion (second end) 73.

[0125] The connector support 64 supports the electrical connector 7B and has a socket 66 that covers the power plug 74 around it with a gap S. The connector support 64 has a through hole 65 that connects the gap S and the internal space 6t. With the electrical connector 7B inserted into the through hole 65, the electrical connector 7B is positioned relative to the connector support 64.

[0126] The electrical connector 7B is supported by the connector support portion 64. Specifically, the electrical connector 7B is fixed relative to the connector support portion 64 by providing a flange 76 in the engagement portion 73 and using the flange 76 and the power plug 74 to clamp a portion of the connector support portion 64 (the edge of the through hole 65).

[0127] Flange 76 is a protrusion that projects radially outward from the electrical connector 7B. Flange 76 is disposed between the power plug 74 and the tube member 22.

[0128] A helical spring (elastic member, elastic body) 9B electrically connects the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7B. The helical spring 9B is configured to be compressed and clamped between the tube member 22 and the electrical connector 7B (more specifically, the engaging portion 73 or flange 76) within the internal space 6t of the handle body 6. The helical spring 9B is a conductive compression spring, and its elastic force acts in the direction in which the electrical connector 7B extends. Specifically, the helical spring 9B is in direct contact with the tube member 22 and pushes the tube member 22 away from the engaging portion (second end) 73 of the electrical connector 7B. That is, the helical spring 9B pushes the tube member 22 in a direction intersecting the length axis of the tube member 22. When the tube member 22 is pushed by the helical spring 9B, the tube member 22 elastically deforms, generating a restoring force that pushes the helical spring 9B back to its original shape. Thus, the tube member 22 and the helical spring 9B are maintained in constant contact. Furthermore, in the base connection portion 2b, the inner circumferential surfaces of the wire member 21 and the tube member 22 are always in contact. When the tube member 22 is pushed away from the engagement portion (second end) 73 of the electrical connector 7B by the helical spring 9B, the tube member 22 slightly flexes in the opposite direction. In this state, the tube member 22 and the wire member 21 passing within the tube member 22 can move forward and backward relative to the electrical connector 7B, and can rotate relative to the electrical connector 7B. That is, when the tube member 22 is pushed away from the electrical connector 7B, the tube member 22 and the wire member 21 passing within the tube member 22 can move forward and backward (slide) relative to the electrical connector 7B in the direction along the length axis of the tube member 22, and can rotate (slide) relative to the electrical connector 7B in the direction about the length axis of the tube member 22.

[0129] In this embodiment, the helical spring (elastic member, elastic body) 9B electrically connects the tube member 22, the wire member 21 passing through the tube member 22, and the electrical connector 7B by applying a force to the tube member 22. The helical spring 9B is supported in the internal space 6t of the handle body 6 so that it can elastically deform along the vertical direction B. The helical spring 9B is a conductive compression spring, and the elastic force acts in the direction extending along the vertical direction B.

[0130] In this embodiment, the helical spring 9B is disposed in a compressed state in the space between the tube member 22 and the engagement portion 73 of the electrical connector 7B. The helical spring 9B uses its force to push the tube member 22 upward to B1, thereby electrically connecting the tube member 22, the wire member 21 passing through the tube member 22, and the engagement portion 73 of the electrical connector 7B. Furthermore, narrow-pitch end turns may be provided at the upper and lower ends of the helical spring 9B.

[0131] According to the endoscopic treatment device 100B of this embodiment, the electrical connection between the electrical connector 7B supplied with high-frequency current and the wire member 21 and tube member 22 connected to the clamp 4 can be reliably ensured regardless of the posture of the operating part 5B.

[0132] The second embodiment of this utility model has been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment, and design changes that do not depart from the spirit of this utility model are also included. In addition, the constituent elements shown in the above embodiments and variations can be appropriately combined to form a configuration.

[0133] Figures 11-13 This is a diagram showing a leaf spring 9G, which is a variation of the helical spring 9B.

[0134] The leaf spring 9G electrically connects the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7B by applying a force to the tube member 22. The leaf spring 9G is disposed in a compressed state in the space between the tube member 22 and the engagement portion 73 of the electrical connector 7B. The leaf spring 9G electrically connects the tube member 22 (the wire member 21 passing through the tube member 22) and the engagement portion 73 of the electrical connector 7B by using a force to push the tube member 22 upward to B1.

[0135] (Third Implementation)

[0136] Reference Figure 14 This invention describes an endoscope treatment device 100C according to a third embodiment of the present invention. In the following description, the same reference numerals are used for structures that are common to those already described, and repeated descriptions are omitted.

[0137] [Endoscopic treatment equipment 100C]

[0138] Endoscopic treatment instrument 100C (also known as treatment instrument 100C) is a hemostatic forceps used to cauterize and stop bleeding in a affected area. Treatment instrument 100C includes a sheath 1, a longitudinal member 2, a transmission member 2A, a support member 3, forceps (forceps member) 4, and an operating part 5C.

[0139] Figure 14 This is a sectional view of the operating unit 5C.

[0140] An operating part (handle, handle assembly) 5C is provided on the base end side A2 of the sheath 1. The operating part 5C includes a handle body 6, an electrical connector 7B, a slider 8, and a coil spring 9C. In this embodiment, the electrical connector 7B is mounted on the handle body 6.

[0141] A helical spring (elastic member, elastic body) 9C electrically connects the tube member 22 and the electrical connector 7B by applying a force to the tube member 22. The helical spring 9C has a first helical spring 91C and a second helical spring 92C. The first helical spring 91C is supported by a helical spring support 67 within the internal space 6t of the handle body 6, allowing it to elastically deform along the vertical direction B. That is, the first helical spring 91C is a conductive compression spring supported by the helical spring support 67 (recess). The first helical spring 91C is positioned in a compressed state between the helical spring support 67 and the tube member 22. Specifically, the first helical spring 91C directly contacts the tube member 22 and pushes the tube member 22 towards the engaging portion (second end) 73 of the electrical connector 7B. That is, the first helical spring 91C pushes the tube member 22 from a direction intersecting the length axis of the tube member 22. The second helical spring 92C is a conductive compression spring, disposed in a compressed state between the electrical connector 7B (more specifically, the engaging portion 73 or flange 76) and the tube member 22. Specifically, the second helical spring 92C is in direct contact with the tube member 22 and pushes the tube member 22 away from the engaging portion (second end) 73 of the electrical connector 7B. That is, the second helical spring 92C pushes the tube member 22 in a direction intersecting the length axis of the tube member 22. The first helical spring 91C pushes the tube member 22 in the opposite direction to the direction in which the second helical spring 92C pushes the tube member 22, thus properly maintaining the tube member 22 in constant contact with the second helical spring 92C. Furthermore, in the base end connection portion 2b, the inner circumferential surfaces of the wire member 21 and the tube member 22 are always in contact. With both the first helical spring 91C and the second helical spring 92C pressing against the tube member 22, the tube member 22 and the wire member 21 passing through the tube member 22 can move forward and backward relative to the electrical connector 7B, and can rotate relative to the electrical connector 7B. That is, with the tube member 22 pressed against the second helical spring 92C, the tube member 22 and the wire member 21 passing through the tube member 22 can move forward and backward (slide) relative to the electrical connector 7B in the direction along the length axis of the tube member 22, and can rotate (slide) relative to the electrical connector 7B in the direction about the length axis of the tube member 22.

[0142] In this embodiment, the helical spring 9C is disposed within the internal space 6t of the handle body 6, in the space between the upper inner wall 6a of the handle body 6 and the engaging portion 73 of the electrical connector 7B. The tube member 22 passes through the helical spring 9C along the length axis direction A. That is, the helical spring 9C is disposed on both sides in the vertical direction B, sandwiching the tube member 22. The helical spring 9C can be a single spring, or it can be divided into two parts and disposed on both sides in the vertical direction B, sandwiching the tube member 22 respectively.

[0143] Even when the tube member 22 moves in the vertical direction B, the helical spring 9C can maintain contact with the tube member 22 through its force, and electrically connect the tube member 22 and the engagement portion 73 of the electrical connector 7B. In addition, narrow-pitch end turns can be provided at the upper and lower ends of the first helical spring 91C and the upper and lower ends of the second helical spring 92C.

[0144] According to the endoscopic treatment device 100C of this embodiment, the electrical connection between the electrical connector 7B supplied with high-frequency current and the wire member 21 and tube member 22 connected to the clamp 4 can be reliably ensured regardless of the posture of the operating part 5C.

[0145] The third embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment, and design changes that do not depart from the spirit of the present invention are also possible. Furthermore, the constituent elements shown in the above embodiments and variations can be appropriately combined to form a configuration.

[0146] (Fourth Implementation)

[0147] Reference Figures 15-16 This invention describes an endoscope treatment device 100E according to a fourth embodiment of the present invention. In the following description, the same reference numerals are used for structures that are common to those already described, and repeated descriptions are omitted.

[0148] [Endoscopic Handling Instruments 100E]

[0149] Endoscopic treatment instrument 100E (also known as treatment instrument 100E) is a hemostatic forceps used to cauterize and stop bleeding in a affected area. Treatment instrument 100E includes a sheath 1, a longitudinal member 2, a transmission member 2A, a support member 3, forceps (forceps member) 4, and an operating part 5E.

[0150] Figure 15 This is a sectional view of the operating section 5E. Figure 16 This is a 3D view of the 5E operating unit.

[0151] An operating part (handle, handle assembly) 5E is provided on the base end side A2 of the sheath 1. The operating part 5E includes a handle body 6E, an electrical connector 7E, a slider 8, and a coil spring 9E. In this embodiment, the electrical connector 7E is mounted on the handle body 6E.

[0152] The handle body 6E has an internal space 6s through which the wire member 21 can pass. The wire member 21 extends to the slider 8 through the internal space of the sheath 1 and the internal space 6s of the handle body 6. The handle body 6E has a thumb ring 62, a connector support 64E, and a coil sheath support 69.

[0153] The handle body 6E has a first handle body 60 and a second handle body 61. The second handle body 61 is connected to the base end of the first handle body 60. The first handle body 60 and the second handle body 61 are rotatably connected relative to each other about a rotation axis extending along the length axis direction A. The internal space 6s is a continuous space formed in the first handle body 60 and the second handle body 61. The internal space 6s has an internal space 6t formed in the first handle body 60 and an internal space 6u formed in the second handle body 61.

[0154] like Figure 15 As shown, the front end of the tube member 22 overlaps with the base end of the coil sheath 13 within the handle body 6E, and the electrical connector 7E is disposed on the front end side A1 of the tube member 22. In the longitudinal axis direction A of the wire member 21, the base end 13p of the coil sheath 13 is disposed between the front end 22b of the tube member 22 and the electrical connector 7E.

[0155] The electrical connector 7E is a conductive member extending in a direction intersecting the length axis of the tube member 22, and is formed in a generally cylindrical shape. Furthermore, "generally cylindrical" includes not only a strictly cylindrical shape but also a shape that approximates a cylindrical shape. In this embodiment, the electrical connector 7E extends in the vertical direction B.

[0156] The electrical connector 7E has an upper end 70, a connecting portion 71, a power plug 74, a reduced diameter portion 75, and a flange 76. For example... Figure 15 As shown, the electrical connector 7E extends between the power plug (first end) 74 and the upper end (second end) 70. A connecting portion 71 and a reduced-diameter portion 75 are located between the power plug (first end) 74 and the upper end (second end) 70. The connecting portion 71 has a through-path 72 extending in a direction intersecting the direction in which the electrical connector 7E extends.

[0157] A connector support portion 64E is provided on the first handle body 60. The connector support portion 64E supports the electrical connector 7E and has a socket 66 that covers the power plug 74 with a gap S around it. The connector support portion 64E has a through hole 65 that connects the gap S and the internal space 6t. With the electrical connector 7E inserted into the through hole 65, the electrical connector 7E is positioned relative to the connector support portion 64E.

[0158] The handle body 6E has a mating portion 68. The mating portion 68 is a recess with a circular inner circumferential surface that supports the upper end 70 of the electrical connector 7E. The gap between the upper end 70 of the electrical connector 7E and the mating portion 68 is narrow, which can prevent the electrical connector 7E from shaking.

[0159] The electrical connector 7E (specifically, the power plug 74) can be connected to a high-frequency power supply device (not shown) via a power cable, and is electrically and physically connected to the base connection portion 2b. The base connection portion 2b, connected to the electrical connector 7E, does not have a coil sheath 13, but instead has a wire member 21 and a tube member 22. The electrical connector 7E can supply high-frequency current from the high-frequency power supply device to the clamp 4 via the tube member 22 and the wire member 21.

[0160] The electrical connector 7E is supported by a connector support portion 64E and a mating portion 68. Specifically, the electrical connector 7E is fixed relative to the connector support portion 64E by clamping a portion (the edge of the through hole 65) of the connector support portion 64E into it using a flange 76 and a power plug 74. The electrical connector 7E extends in a direction intersecting the length axis of the wire member 21. The flange 76 is disposed between the power plug 74 and the tube member 22.

[0161] A flange 76 is provided between the power plug 74 and the upper end 70. Specifically, it is provided between the reduced diameter portion 75 and the connecting portion 71 of the electrical connector 7E. The flange 76 is a protrusion that projects radially outward from the electrical connector 7E.

[0162] A helical spring (elastic member, elastic body) 9E electrically connects the tube member 22 (the wire member 21 passing through the tube member 22) and the electrical connector 7E by applying force to the tube member 22. A portion (connection 71) of the electrical connector 7E passes through the helical spring 9E. This prevents the helical spring 9E from shifting position along the longitudinal axis of the tube member 22, thus suppressing the occurrence of electrical failure. The helical spring 9E is configured to be compressed and clamped between the tube member 22 and the electrical connector 7E (more specifically, the flange 76) within the internal space 6t of the handle body 6E. The helical spring 9E is a conductive compression spring, and its elastic force acts in the direction in which the electrical connector 7E extends. Specifically, the helical spring 9E is in direct contact with the tube member 22 and pushes the tube member 22 toward the electrical connector 7E (the inner surface of the through-path 72 of the electrical connector 7E). That is, the helical spring 9E pushes the tube member 22 from a direction intersecting the longitudinal axis of the tube member 22. When the tube member 22 is pressed by the helical spring 9E, the tube member 22 elastically deforms, generating a restoring force to return to its original shape, and pushes the helical spring 9E back. This maintains the state where the helical spring 9E is always in contact with the tube member 22. Furthermore, in the base connection portion 2b, the inner circumferential surfaces of the wire member 21 and the tube member 22 are always in contact. The helical spring 9E applies force to the tube member 22 toward the upper end 70 of the electrical connector 7E. While the tube member 22 is pressed against the upper end 70 of the electrical connector 7E by the helical spring 9E, the tube member 22 slightly flexes toward the upper end 70 of the electrical connector 7E. The helical spring 9E contacts the tube member 22 in a compressed state, and while pressing the tube member 22 against the inner surface of the through-path 72 of the electrical connector 7E, the tube member 22 and the wire member 21 passing through the tube member 22 can move forward and backward relative to the electrical connector 7E within the through-path 72 of the electrical connector 7E, and can rotate relative to the electrical connector 7E. That is, when the tube member 22 is pressed against the electrical connector 7E, the tube member 22 and the wire member 21 passing through the tube member 22 can slide (advance) relative to the electrical connector 7E in the direction along the length axis of the tube member 22, and can rotate (slide) relative to the electrical connector 7E in the direction about the length axis of the tube member 22.

[0163] Figure 17 This is a diagram showing the energizing path from the self-energizing connector 7E to the tube member 22.

[0164] The energizing path from the electrical connector 7E to the tube member 22 (base end connection 2b) consists of three paths: path R1, path R2, and path R3. Path R1 is the path from the electrical connector 7E (upper end 70) to the tube member 22 (base end connection 2b). Path R2 is the path from the connection portion 71 of the electrical connector 7E via the helical spring 9E to the tube member 22 (base end connection 2b). Path R3 is the path from the flange 76 of the electrical connector 7E via the helical spring 9E to the tube member 22 (base end connection 2b). In particular, in path R3, the flange 76 is always in contact with the helical spring 9E. By providing such a structure with multiple energizing paths, the occurrence of energizing failures can be reduced. As a result, the sliding resistance of the tube member 22 and the wire member 21 passing through the tube member relative to the electrical connector 7E during rotation and movement can be reduced, and stable energizing can be achieved. Alternatively, narrow-pitch end turns can be provided at the upper and lower ends of the helical spring 9E.

[0165] The length L1 of the socket 66 in the vertical direction B is longer than the length L2 of the plug 74 in the vertical direction B. Therefore, the plug 74 is less likely to be connected to the power cable in an inclined position relative to the vertical direction B. Furthermore, the upper fitting portion 68 prevents the electrical connector 7E from wobbling, so the power cable and the plug 74 can be easily connected in a straight line along the vertical direction B. As a result, it is possible to prevent the electrical connector 7E from bending and becoming difficult to connect to the power cable.

[0166] like Figure 15 and Figure 16 As shown, a concave surface 6e is formed on the handle body 6E, which can be gripped by the thumb or the like. An electrical connector 7E and a socket 66 are fixed in a position overlapping the concave surface 6e along the longitudinal axis A of the operating part 5E. Therefore, the surgical operator can easily grip the handle body 6E.

[0167] According to the endoscopic treatment device 100E of this embodiment, regardless of the posture of the operating part 5E, the electrical connection of the electrical connector 7E supplied with high-frequency current and the wire member 21 and tube member 22 connected to the clamp 4 can be reliably ensured, and the rotation and movement of the wire member 21 relative to the electrical connector 7E can be taken into account.

[0168] The fourth embodiment of this utility model has been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to this embodiment, and design changes that do not depart from the spirit of this utility model are also included. In addition, the constituent elements shown in the above embodiments and variations can be appropriately combined to form a configuration.

[0169] Figure 18This diagram shows operation part 5D, a variation of operation part 5, operation part 5B, and operation part 5C. In operation part 5D, the electrical connector 7 is mounted on the slider 8. Even when the electrical connector 7 is mounted on the slider 8, the electrical connection between the electrical connector 7 and the longitudinal member 2 can be reliably ensured by using a helical spring (elastic member, elastic body).

[0170] Figure 19 This is a diagram showing the processing unit (end effect actuator) 110. The processing unit (end effect actuator) 110 will be further described below.

[0171] The support member 3 has a cylindrical support body 30, a frame 31, a connecting member 32, a rod 33, and a linkage mechanism 34. The support body 30 is mounted on the front end 1a of the sheath 1 and can rotate about a rotation axis along the length axis direction A. The frame 31 is mounted on the support body 30 and protrudes from the front end 1a of the sheath 1 toward the front end side A1. The connecting member 32 connects the front end of the wire member 21 and the rod 33. The rod 33 is a rod-shaped member that protrudes from the front end 1a of the sheath 1 toward the front end side A1. The rod 33 moves forward and backward along the frame 31 in the length axis direction A. The front end of the rod 33 is connected to the linkage mechanism 34. The base end of the rod 33 is connected to the connecting member 32. The linkage mechanism 34 converts the forward and backward movement of the rod 33 into the opening and closing movement of the clamp 4. The linkage mechanism 34 has a first link 341 and a second link 342.

[0172] The pliers 4 have a pin 40, a first pliers plate 41, and a second pliers plate 42. The first pliers plate 41 and the second pliers plate 42 have gripping portions 4a that hold tissues. The pin 40 is fixed to a frame 31. The first pliers plate 41 and the second pliers plate 42 are rotatably connected around the pin 40, which extends in a direction perpendicular to the length axis A, and can be opened and closed toward the front end side A1. The first pliers plate 41 is connected to a first link 341 at a position A2 closer to the base end of the pin 40. The second pliers plate 42 is connected to a second link 342 at a position A2 closer to the base end of the pin 40. Advancing the lever 33 causes the first link 341 and the second link 342 to move away radially R, opening the first pliers plate 41 and the second pliers plate 42. Retracting the lever 33 causes the first link 341 and the second link 342 to move closer radially R, closing the first pliers plate 41 and the second pliers plate 42.

Claims

1. A handle assembly, characterized in that, This handle assembly features: handle body; Transmission components that transmit high-frequency current; A conductive connector extending in a direction intersecting the length axis of the transmission member; and An elastomer that pushes the transmission member toward the connector. The elastomer contacts the transmission member, and the transmission member is able to slide relative to the connector when the transmission member is pressed against the connector.

2. The handle assembly according to claim 1, characterized in that, The first end of the conductive connector has a plug that can be connected to a power cable that transmits the high-frequency current. A through-path extending along the longitudinal axis of the handle body is formed at the second end of the conductive connector. The transmission member is inserted into the through-path, and the transmission member is pushed against the inner surface of the through-path by the elastomer.

3. The handle assembly according to claim 1, characterized in that, The transmission component includes a tubular component, through which a wire component passes. The elastomer is in direct contact with the tubular component and pushes the tubular component toward the connector.

4. The handle assembly according to claim 1, characterized in that, The elastic body is a helical compression spring.

5. The handle assembly according to claim 1, characterized in that, The elastomer is configured to be sandwiched between the transmission member and the connector in a compressed state.

6. The handle assembly according to claim 1, characterized in that, The connector has: a first end having a plug capable of connecting to a power cable that transmits the high-frequency current; and a second end toward which the transmission member is pressed. The connector has a flange located between the plug and the transmission member. The elastomer is configured such that it is clamped between the transmission member and the flange in a compressed state. The elastomer applies force to the transmission member toward the second end.

7. The handle assembly according to claim 6, characterized in that, The elastic body is a helical compression spring. The connector extends at least partially through the compression spring.

8. The handle assembly according to claim 2, characterized in that, With the transfer member pressed against the second end of the connector by the elastomer, the transfer member flexes toward the second end of the connector.

9. The handle assembly according to claim 1, characterized in that, With the transfer member pressed against the connector, the transfer member can slide relative to the connector in a direction about the length axis of the transfer member.

10. The handle assembly according to claim 1, characterized in that, With the transfer member pressed against the connector, the transfer member is able to slide relative to the connector in a direction along the length axis of the transfer member.

11. The handle assembly according to claim 1, characterized in that, The elastomer is conductive, applies force to the transmission member in the direction of extension of the connector, and contacts the transmission member in a compressed state.

12. A handle assembly, characterized in that, This handle assembly features: handle body; Transmission components that transmit high-frequency current; A conductive connector extending in a direction intersecting the transmission member; and A spring, which is configured in a compressed state between the transmission member and the connector. The transmission member and the spring are in direct contact, thereby electrically connecting the transmission member and the connector.

13. The handle assembly according to claim 12, characterized in that, The transmission member and the spring are in direct contact, thereby electrically connecting the transmission member, the spring, and the connector.

14. An endoscopic treatment device, characterized in that, The endoscopic apparatus includes: jacket; An end effector, which is disposed at the front end of the sheath; A longitudinal member, which is connected to the end effector; as well as The handle assembly according to any one of claims 1 to 13, The transmission component transmits high-frequency current to the longitudinal component.

15. An endoscopic treatment device, characterized in that, The endoscopic apparatus includes: jacket; An end effector, which is disposed at the front end of the sheath; A handle, which is connected to the base end of the sheath; A longitudinal member, which is connected to the end effector; as well as A transmission component that transmits high-frequency current to the longitudinal component. The handle has: A conductive connector that extends in a direction intersecting the transmission member; as well as An elastomer that pushes the transmission member toward the connector. With the transfer member pressed against the connector, the transfer member is able to slide relative to the connector.

16. The endoscopic treatment device according to claim 15, characterized in that, The first end of the conductive connector has a plug that can be connected to a power cable that transmits the high-frequency current. A through-path extending along the length axis of the handle is formed at the second end of the conductive connector. The connector has a flange located between the plug and the transmission member. The elastomer is configured such that it is clamped between the transmission member and the flange in a compressed state. The elastomer applies force to the transmission member toward the second end.

17. The endoscopic treatment device according to claim 15, characterized in that, The longitudinal member penetrates the sheath, and the end effector rotates relative to the sheath.

18. The endoscopic treatment device according to claim 15, characterized in that, The longitudinal member has a linear component.

19. The endoscopic treatment device according to claim 18, characterized in that, The transmission component has a tubular component. The elastomer contacts the tube component in a compressed state, thereby applying force to the tube component.

20. The endoscopic treatment device according to claim 15, characterized in that, The connector has a through-path, through which the transmission member passes. The elastomer causes the force to be applied, thereby electrically connecting at least a portion of the transmission member and the through path.

21. The endoscopic treatment device according to claim 15, characterized in that, The elastic body is a helical spring. The pitch of the end turns at both ends of the helical spring is narrower than that of the other parts.

22. The endoscopic treatment device according to claim 15, characterized in that, The connector is positioned away from the transmission member. The elastomer electrically connects the transmission member and the connector by applying a force to the transmission member.

23. The endoscopic treatment device according to claim 15, characterized in that, The elastomer is disposed on both sides, sandwiching the transmission member.

Images