Medical device

Abstract

The utility model provides a medical instrument. A medical device is provided with: a sheath extending in the longitudinal direction; a treatment part disposed on the tip side of the sheath; a wire member which is inserted into the sheath and to which the treatment part is fixed; a handle which is disposed on the base end side of the sheath and to which the wire member is fixed; and a transmission member disposed on the outer peripheral side of the sheath and extending from the handle to the tip side, the treatment part, the wire member, the handle, and the transmission member being rotatable in the circumferential direction with respect to the longitudinal direction with respect to the sheath.

Description

Technical Field

[0001] This utility model relates to a medical device having an endoscopic treatment unit.

[0002] This application claims priority based on U.S. Provisional Patent Application No. 63 / 649,465, filed May 20, 2024, the contents of which are incorporated herein by reference. Background Technology

[0003] In endoscopic treatment, a treatment unit including clamp units and forceps is used. The treatment unit is introduced to the treatment position by a feeder (introducing device) that can pass through the endoscope. The feeder may include, for example, a wire member connected to the treatment unit, a handle for operating the treatment unit via the wire member, and a sheath through which the wire member passes.

[0004] When using the treatment unit for treatment, it is necessary to rotate the treatment unit appropriately. For example, Patent Document 1 describes a medical device having a structure in which the treatment instrument can be rotated by rotating the sheath. When using the treatment unit for treatment, the sheath extends through the endoscope channel; therefore, by rotating the portion of the sheath exposed through the endoscope channel, the treatment instrument can be rotated.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: U.S. Patent Application Publication No. 2017 / 0224341 Utility Model Content

[0008] Problems to be solved by utility models

[0009] However, in the medical device described in Patent Document 1, when the treatment unit is rotated by rotating the sheath, the sheath comes into contact with the inner wall of the endoscope channel and causes friction. Therefore, there is a problem that the rotation of the sheath is difficult to transmit to the treatment unit and the treatment unit is difficult to rotate.

[0010] Based on the above, the purpose of this utility model is to provide a medical device that allows the treatment section to rotate easily when the sheath passes through the endoscope channel.

[0011] Solution for solving the problem

[0012] To address the aforementioned problems, this utility model proposes the following solution.

[0013] The first embodiment of the present invention provides a medical device characterized in that the medical device comprises: a sheath extending in the length direction; a treatment part disposed at the front end of the sheath; a thread member passing through the sheath, and the treatment part being fixed to the thread member; a handle disposed at the base end of the sheath, and the thread member being fixed to the handle; and a transmission member disposed on the outer periphery of the sheath, extending from the handle toward the front end, wherein the treatment part, the thread member, the handle, and the transmission member are capable of rotating in conjunction with respect to the sheath in the circumferential direction relative to the length direction.

[0014] The second embodiment of the medical device of this utility model, based on the first embodiment, is characterized in that the transmission member is formed as a cylinder through which the sheath passes.

[0015] The third embodiment of the medical device of this utility model, based on the first embodiment, is characterized in that the handle has: a handle body; and a slider supported on the handle body, capable of moving forward and backward in the length direction; the wire member is connected to the slider and is capable of moving forward and backward in the length direction in conjunction with the slider; the transmission member has higher flexibility than the handle and is capable of bending along the sheath.

[0016] The fourth embodiment of the medical device of this utility model is based on the first embodiment of the medical device, characterized in that the outer diameter of the handle is larger than the inner diameter of the endoscope channel through which the treatment part can pass, and the outer diameter of the transmission member is smaller than the inner diameter of the endoscope channel.

[0017] The fifth embodiment of the medical device of this utility model is based on the first embodiment of the medical device, characterized in that, in the length direction, the length of the transmission member is longer than the length of the handle.

[0018] The sixth embodiment of the medical device of this utility model, based on the first embodiment, is characterized in that, in the length direction, the length of the transmission member is shorter than the length of the sheath.

[0019] The seventh embodiment of the medical device of this utility model, based on the first embodiment of the medical device, is characterized in that, in the length direction, the length from the front end of the treatment part to the front end of the transmission member is shorter than the length of the endoscope channel through which the treatment part can pass.

[0020] The medical device of the eighth embodiment of this utility model, based on the medical device of the seventh embodiment, is characterized in that, with the treatment part penetrating through the endoscope channel and the treatment part protruding from the front end of the endoscope channel, the front end of the transmission member is received in the endoscope channel.

[0021] The ninth embodiment of the medical device of this utility model, based on the first embodiment, is characterized in that, with the treatment part penetrating the endoscope channel and the treatment part protruding from the front end of the endoscope channel, the length between the front end of the transmission member and the forceps jaw of the endoscope channel is less than 30 cm.

[0022] The tenth embodiment of the medical device of this utility model, according to the first embodiment of the medical device, is characterized in that the handle has: a first part connected to the transmission member and capable of rotating in conjunction with the transmission member; and a second part capable of rotating relative to the first part.

[0023] According to the medical device of the eleventh embodiment of this utility model, the handle has the following characteristics: a handle body; and a slider supported on the handle body, which is capable of moving forward and backward in the length direction, the slider being disposed in the first part.

[0024] The medical device of the twelfth embodiment of this utility model, according to the medical device of the tenth embodiment, is characterized in that the handle has: a handle body; and a slider supported on the handle body, which is capable of moving forward and backward in the length direction, the slider being disposed in the second part.

[0025] The medical device of the thirteenth aspect of this utility model, according to the medical device of the tenth aspect, is characterized in that the handle has a stop between the first part and the second part to restrict the relative rotation between the first part and the second part.

[0026] The medical device of the fourteenth embodiment of this utility model, according to the medical device of the thirteenth embodiment, is characterized in that the stop member is a friction member that generates friction with the first part and with the second part.

[0027] According to the medical device of the fifteenth aspect of this utility model, and the medical device of the fourteenth aspect, the friction between the stop member and the first part and the friction between the stop member and the second part are determined by the rotational transmission property of the transmission member when the treatment part passes through the endoscope channel through which the treatment part can pass.

[0028] The medical device of the sixteenth embodiment of this utility model, according to the medical device of the thirteenth embodiment, is characterized in that the friction between the stop member and the first part and the friction between the stop member and the second part are greater than 10 mN·m.

[0029] The medical device of the seventeenth embodiment of this utility model, according to the medical device of the first embodiment, is characterized in that the transmission member has higher flexibility than the handle, and the transmission member has: an inner layer; an outer layer; and a middle layer disposed radially between the inner layer and the outer layer, and has a higher hardness than the inner layer and the outer layer.

[0030] The medical device of the eighteenth embodiment of this utility model, according to the medical device of the first embodiment, is characterized in that the transmission member can be transformed into a shortened state having a first length in the length direction and an extended state having a second length longer than the first length in the length direction.

[0031] The nineteenth embodiment of the present invention provides a medical device based on the first embodiment of the medical device, characterized in that the medical device is configured such that the force causing the transmission member to rotate can be transmitted to the treatment unit via the handle and the wire member.

[0032] The medical device of the twentieth embodiment of this utility model is characterized in that the medical device comprises: a sheath extending in the length direction; a treatment part disposed at the front end side of the sheath; a thread member passing through the sheath, and the treatment part fixed to the thread member; and a handle disposed at the base end side of the sheath, and the thread member fixed to the handle, the sheath and the handle being fixed together, the treatment part, the thread member, the handle and the sheath being able to rotate in a circumferential direction relative to the length direction, and the treatment part being able to rotate relative to the sheath in the circumferential direction.

[0033] The medical device of the 21st embodiment of this utility model, according to the medical device of the 20th embodiment, is characterized in that the medical device has a gripping part connected to the sheath, the gripping part being slidable on the sheath and having an outer diameter larger than the outer diameter of the sheath.

[0034] Effects of the utility model

[0035] In the medical device of this invention, when the sheath passes through the endoscope channel, the treatment unit can be easily rotated, enabling the treatment using the treatment unit to be carried out smoothly. Attached Figure Description

[0036] Figure 1 This is a side view showing the clamping device of the first embodiment.

[0037] Figure 2 This is a perspective view showing the clamping and guiding device.

[0038] Figure 3 This is a side view showing the operating part, with a partial cross-section shown.

[0039] Figure 4 This is a perspective view showing the outer sheath, illustrating its structure.

[0040] Figure 5 This is a perspective view showing the fixture unit.

[0041] Figure 6 This is a top view showing the box.

[0042] Figure 7 This is a diagram showing the clamp unit to be connected to the clamp guide device.

[0043] Figure 8 This is a diagram showing the clamp unit connected to the clamp guide device.

[0044] Figure 9 This is a diagram showing the situation where the clamping unit is pulled out of the box.

[0045] Figure 10 This shows the state in which the sheath of the aforementioned clamping device passes through the endoscope's treatment instrument channel.

[0046] Figure 11 This is a three-dimensional diagram showing the use of an endoscopic system.

[0047] Figure 12 This shows the state in which the sheath of the aforementioned clamping device passes through the endoscope's treatment instrument channel.

[0048] Figure 13 This is a three-dimensional diagram showing the use of an endoscopic system.

[0049] Figure 14 This is a cross-sectional view of the operating part of Modified Example 1, showing a section along the length direction.

[0050] Figure 15 yes Figure 14 An enlarged view of the area shown by the dashed line D13 of the aforementioned operating section.

[0051] Figure 16 This is a side view showing the operating part of modified example 2, showing a partial cross-section.

[0052] Figure 17 This is a cross-sectional view of the aforementioned operating part, showing a section along the length direction.

[0053] Figure 18 yes Figure 16 The above-mentioned operating part shown is a cross-sectional view along line F14-F14.

[0054] Figure 19 yes Figure 18 An enlarged view of the area shown by the dashed line D17 of the aforementioned operating section.

[0055] Figure 20 This is a side view showing the main body of the operating part, and a cross-section of the slider is shown.

[0056] Figure 21 yes Figure 16 The above-mentioned operating part is shown as a cross-sectional view along line F19-F19.

[0057] Figure 22 yes Figure 21 An enlarged view of the area shown by the dashed line D20 of the aforementioned operating section.

[0058] Figure 23 This is a cross-sectional view of the operating part of variant example 3, showing a section along the length direction.

[0059] Figure 24 This is a side view showing the outer sheath of variant example 4.

[0060] Figure 25 This is a side view showing an outer sheath that is configured to be retractable.

[0061] Figure 26 This is a side view showing a transmission member configured to be extendable and retractable in the length direction.

[0062] Figure 27 This is a side view showing the clamping device of the second embodiment.

[0063] Figure 28 This shows the state in which the sheath of the aforementioned clamping device passes through the endoscope's treatment instrument channel.

[0064] Figure 29 This is a side view showing the fixture device of variant 5.

[0065] Explanation of reference numerals in the attached figures

[0066] 300, Fixture device; 300F, Fixture device; 300G, Fixture device; 200, Fixture guide device (feeder); 200F, Fixture guide device (feeder); 200f, Connecting part; 200g, Grip part; 220, Sheath; 221, Front end head; 222, Front end side coil; 224, Hand-side side coil; 230, Operating line; 231, Arrow hook; 231a, Engaging part; 231b, Line connecting part; 232, Line component; 232a. Rotary transmission component; 232b. Anti-detachment component; 240. Operating part; 240B. Operating part; 240C. Operating part; 240D. Operating part; 240a. First part; 240b. Second part; 241. Main body of operating part; 241a. Slit part; 241b. Rotary grip part; 241c. Anti-detachment component; 241d. Groove part; 241t. Base end; 242. Sliding component; 242a. Receiving space; 243. Rotary operating part ; 243a, Through path; 248, Thumb ring; 248s, Front end; 249, Stop; 250, Outer sheath (transfer member); 250E, Outer sheath (transfer member); 251, Inner layer; 252, Outer layer; 253, Middle layer; 1, Clamping unit; 2, Clamp; 21, Arm; 211, First arm; 212, Second arm; 22, Tissue holding part; 3, Pressing member (holding member); 3A, Pressing tube; 3B, Pressing guide tube; 4. Connecting structural components; 100, box system; 5, box; 70, box body (outer shell); 67, insertion port (opening); 7S, treatment instrument storage area; 71, first area; 74, sheath insertion area; 500, endoscope system; 400, endoscope; 410, insertion part; 420, endoscope operating part; 430, treatment instrument channel; 440, forceps jaw; 450, forceps bolt; K, length direction; K1, front end side; K2, base end side; S, circumferential direction. Detailed Implementation

[0067] Hereinafter, embodiments of the medical device of this utility model will be described with reference to the accompanying drawings. In the following description, structures having the same or similar functions will be labeled with the same reference numerals. Furthermore, repeated descriptions of these structures will sometimes be omitted. In this embodiment, a clamping device will be described as an example of a medical device.

[0068] (First Embodiment)

[0069] [Clamping Device 300]

[0070] Reference Figures 1 to 26 The clamping device 300 of the first embodiment of the present invention will now be described.

[0071] Figure 1 This is a side view showing the clamping device 300 of the first embodiment.

[0072] The clamping device 300 includes a clamping guide device (supplyer) 200 and a clamping unit 1. The clamping unit 1 is loaded into the clamping guide device 200.

[0073] [Clamping guide device 200]

[0074] Figure 2 This is a perspective view showing the clamp guide device 200.

[0075] like Figure 2 As shown, the clamp guide device 200 includes a sleeve 220, an operating line 230, an operating part (handle) 240, and an outer sleeve (transfer member) 250.

[0076] In the clamp guide device 200, the direction in which the sheath 220 extends is defined as the length direction K. Furthermore, the front end side in the length direction K is defined as K1, and the base end side in the length direction K is defined as K2. Moreover, the circumferential direction relative to the length direction K is defined as the circumferential direction S.

[0077] like Figure 2 As shown, the sheath 220 includes a front end head 221, a front side coil 222, and a side coil 224, and is integrally formed into an elongated tubular shape. The sheath 220 is a component extending in the length direction K. The front side coil 222 is disposed at the front end of the sheath 220. The front end head 221 is disposed at the front end of the front side coil 222.

[0078] The sheath 220 extends through the instrument channel (endoscope channel) 430 of the endoscope 400 (described later) and is used in conjunction with the endoscope. Therefore, the sheath 220 is formed to be sufficiently longer than the length M6 of the instrument channel 430. The sheath 220 is flexible and bends to fit the instrument channel 430.

[0079] The sheath 220 is configured to rotate relative to the operating line 230 in the circumferential direction S. The sheath 220 is configured to rotate relative to the operating part 240 in the circumferential direction S. The sheath 220 is configured to rotate relative to the outer sheath 250 in the circumferential direction S. The sheath 220 is configured to rotate relative to the clamping unit 1 in the circumferential direction S.

[0080] like Figure 2 As shown, the operating line (power transmission part) 230 passes through the sheath 220. The operating line 230 has an arrow hook (connecting part) 231 that is connected to the clamp unit 1 and a line member 232 for operating the arrow hook 231.

[0081] like Figure 2As shown, the arrow hook 231 has a generally conical engaging portion 231a that engages with the clamp unit 1, and a wire connecting portion 231b provided at the base end of the engaging portion 231a. The arrow hook 231 is formed of a metal material such as stainless steel.

[0082] The wire member 232 extends through the sheath 220 in a manner that allows it to move freely relative to the sheath 220. The front end of the wire member 232 is fixed to the base end of the wire connector 231b, for example, by welding.

[0083] The operating line 230 is configured to rotate relative to the sheath 220 in the circumferential direction S. The operating line 230 is fixed relative to the operating part 240 and rotates in the circumferential direction S in conjunction with the operating part 240. The operating line 230 is also configured to not rotate relative to the outer sheath 250 in the circumferential direction S. The operating line 230 is connected to the clamping unit 1 and rotates in the circumferential direction S in conjunction with the clamping unit 1.

[0084] Figure 3 This is a side view showing the operation unit 240, showing a partial cross-section.

[0085] like Figure 2 As shown, the operating part 240 is disposed on the base end side K2 of the sheath 220. Figure 3 As shown, the operating unit 240 includes an operating unit body (handle body) 241, a slider 242, and a thumb ring 248. The operating unit body 241, slider 242, and thumb ring 248 are, for example, injection molded from resin material. The operating unit body 241 includes a slit portion 241a and a rotating grip portion 241b at the front end. The slit portion 241a supports the slider 242 in a manner that allows the slider 242 to move forward and backward.

[0086] The slider 242 is mounted on the operating part body 241 in a manner that allows it to move forward and backward relative to the operating part body 241 in the length direction K, and the base end of the wire member 232 is mounted thereon. The slider 242 is supported on the operating part body 241. By moving the slider 242 along the operating part body 241, the wire member 232 moves forward and backward relative to the sheath 220, and the arrow hook 231 moves forward and backward.

[0087] The thumb ring 248 is mounted on the base of the operating part body 241 in a manner that allows it to rotate circumferentially in the direction S relative to the operating part body 241. The thumb ring 248 rotates circumferentially in the direction S about the length direction K as its axis of rotation.

[0088] like Figure 3As shown, an anti-detachment member 241c is provided inside the main body 241 of the operating unit. The anti-detachment member 241c is formed into a cylindrical shape extending in the length direction K. The anti-detachment member 241c is provided in a manner that allows it to rotate in the circumferential direction S relative to the main body 241 of the operating unit. The anti-detachment member 241c rotates in the circumferential direction S relative to the main body 241 of the operating unit about the length direction K as the axis of rotation. The range of movement of the anti-detachment member 241c in the length direction K is limited. The range of movement of the anti-detachment member 241c in the length direction K is shorter than the length of the anti-detachment member 241c in the length direction K. Alternatively, the anti-detachment member 241c may not be able to move in the length direction K. A protective sleeve 220 is fixed to the front end of the anti-detachment member 241c. The protective sleeve 220 and the anti-detachment member 241c move integrally.

[0089] The operating part 240 has a first part 240a connected to the outer sheath 250 and a second part 240b connected to the first part 240a in a manner that allows it to rotate relative to the first part 240a in the circumferential direction S. The first part 240a has an operating part body 241 and a slider 242. The second part 240b has a thumb ring 248.

[0090] The operating part 240 is configured to rotate relative to the sheath 220 in the circumferential direction S. The operating part 240 is fixed relative to the operating line 230 and rotates in the circumferential direction S in conjunction with the operating line 230. The operating part 240 is fixed relative to the outer sheath 250 and rotates in the circumferential direction S in conjunction with the outer sheath 250.

[0091] Figure 4 This is a perspective view showing the outer sheath 250, illustrating the structure of the outer sheath 250.

[0092] like Figure 1 As shown, the outer sheath 250 is disposed on the outer periphery of the sheath 220. Specifically, the sheath 220 extends through the outer sheath 250. Figure 4 As shown, the outer sheath 250 is formed into a cylindrical shape through which the sheath 220 passes. (As...) Figure 3 As shown, the outer sheath 250 extends from the front end of the operating part body 241 toward the front end side K1 in the length direction K. The outer sheath 250 is fixed to the operating part body 241. The outer sheath 250 has higher flexibility than the operating part 240 and can be bent along the sheath 220. The length M5 of the outer sheath 250 in the length direction K is longer than the length M4 of the operating part 240 in the length direction K. The length M5 of the outer sheath 250 in the length direction K is shorter than the length M9 of the sheath 220 in the length direction K.

[0093] like Figure 4As shown, the outer sheath 250 has an inner layer 251, an outer layer 252, and a middle layer 253 disposed radially between the inner layer 251 and the outer layer 252. The outer sheath 250 is, for example, a tube containing a braided layer. The inner layer 251 is formed to contain resin. The outer layer 252 is formed to contain resin. The middle layer 253 is a component with a higher hardness than the inner layer 251. The middle layer 253 is a component with a higher hardness than the outer layer 252. Alternatively, the outer layer 252 may also be a component with a higher hardness than both the inner layer 251 and the middle layer 253. The middle layer 253 is formed to contain metal wire.

[0094] The outer sheath 250 is configured to rotate relative to the sheath 220 in the circumferential direction S. The outer sheath 250 is configured to not rotate relative to the operating line 230 in the circumferential direction S. The outer sheath 250 is fixed relative to the operating part 240 and rotates in the circumferential direction S in conjunction with the operating part 240. The clamping unit 1, the operating line 230, the operating part 240, and the outer sheath 250 are all capable of rotating relative to the sheath 220 in the circumferential direction S.

[0095] [Clamping Unit 1]

[0096] Figure 5 This is a perspective view showing the fixture unit 1.

[0097] like Figure 1 As shown, the clamping unit 1 is positioned at a position K1 closer to the front end of the sheath 220. Figure 5 As shown, the clamp unit 1 includes a clamp 2, a pressing member 3, and a connecting member 4.

[0098] The clamp unit 1 is a "treatment section" that extends through the treatment instrument channel 430 of the endoscope 400 for the treatment of the affected area.

[0099] The clamp unit 1 and the sheath 220 are not fixed together. Moreover, the clamp unit 1 is capable of rotating relative to the sheath 220 in the circumferential direction S.

[0100] In the following description, the clamp 2 side of the clamp unit 1 along the length direction A is designated as the front end side (far side) A1 of the clamp unit 1, and the connecting member 4 side is designated as the base end side (proximal side) A2 of the clamp unit 1. Furthermore, the direction perpendicular to the length direction A is designated as "second direction B" or "left-right direction B". Additionally, the direction perpendicular to both the length direction A and the second direction B is designated as "first direction C" or "up-down direction C".

[0101] The clamp (clamp arm) 2 is formed by bending a sheet metal at its center. For example... Figure 5 As shown, the clamp 2 has a pair of arms 21 that can be opened and closed. The base end A2 of the clamp 2 is inserted into the internal space of the pressing member 3.

[0102] like Figure 5 As shown, a pair of arms 21 have a first arm 211 and a second arm 212. The first arm 211 and the second arm 212 are arranged on both sides of each other, separated by the central axis O1 in the longitudinal direction A of the clamping unit 1. In addition, the clamp 2 may also have three or more arms.

[0103] like Figure 5 As shown, tissue holding portions 22 are formed at the ends of the front end sides A1 of the first arm 211 and the second arm 212. The tissue holding portions 22 are formed by bending the front ends of the first arm 211 and the second arm 212 inward.

[0104] The pressing member (tubular member) 3 is a cylindrical tubular member capable of accommodating at least a portion of the clamp 2. The pressing member 3 has an internal space for the clamp 2 to move forward and backward in the longitudinal direction A. The pressing member 3 can fix the clamp 2, pulled into the internal space, in a closed state. Figure 5 As shown, the pressing member 3 has a pressing tube 3A disposed on the base end side A2 and a pressing conduit 3B disposed on the front end side A1.

[0105] The press tube (second tubular component) 3A is formed in a cylindrical shape. The press tube 3A is formed by injection molding using a soft material compared to the clamp 2, such as a thermoplastic resin with moderate elasticity, such as PPA (polyphthalamide), PA (polyamide), PEEK (polyether ether ketone), or LCP (liquid crystal polymer). Alternatively, the press tube 3A can also be formed from metal instead of thermoplastic resin.

[0106] The pressing conduit (first tubular member) 3B is a cylindrical metal member. The pressing conduit 3B is pressed into the front end of the pressing tube 3A. The pressing tube 3A and the pressing conduit 3B can also be connected by heat fusion, bonding, or threaded fastening.

[0107] The connecting member 4 is detachably connected to the base end of the clamp 2. Additionally, the connecting member 4 is detachably connected to the arrow hook 231 that passes through the sheath 220. That is, the connecting member 4 connects the clamp 2 and the arrow hook 231.

[0108] [Box 5]

[0109] Figure 6 This is a top view of box 5.

[0110] The system having a clamp unit 1 and a box 5 capable of housing the clamp unit 1 is designated as box system 100. Box system 100 is an auxiliary system for easily loading the clamp unit 1 into the clamp feeding device 200.

[0111] like Figure 6As shown, box 5 is the outer shell of the storage clamp unit 1. Box 5 is about 40mm wide, about 70mm to 80mm long, and about 5mm thick. Box 5 is shaped to be an easy size to hold.

[0112] Box 5 is manufactured, for example, by injection molding of a transparent resin material with appropriate hardness, such as ABS, PC, PP, PS, acrylic, or cyclic olefin polymers. Using a transparent resin material to form box 5 makes it easy for the user to determine whether the clamping unit 1 is present inside.

[0113] like Figure 6 As shown, one of the two directions perpendicular to and mutually perpendicular to the length direction (through direction) L of the box 5 is designated as the "width direction W", and the other direction is designated as the "height direction". Furthermore, the surface parallel to both the length direction L and the width direction W is designated as the "horizontal plane". The surface parallel to both the length direction L and the height direction is designated as the "vertical plane". Additionally, in the box 5 housing the clamping unit 1, the side with the pair of arms 21 is designated as the front end side L1 of the box 5, and the side with the connecting member 4 is designated as the base end side L2 of the box 5.

[0114] like Figure 6 As shown, box 5 has a box body (outer shell body) 70 that is formed in a generally rectangular box shape. An insertion port (opening) 67 is formed in the box body 70. A storage area 7S for handling utensils is formed inside the box body 70.

[0115] The box body 70 has a processing device storage area 7S that houses the clamping unit 1 in a manner that allows the clamping unit 1 to move in the length direction (forward and backward direction) L. For example... Figure 6 As shown, the treatment device storage area 7S includes a first area 71 and a sheath insertion area 74. The first area 71 and the sheath insertion area 74 are arranged from the front end side L1 toward the base end side L2 in the length direction L of the box 5.

[0116] An insertion port (opening) 67 is formed in the box body 70, into which a sheath 220 can be inserted. The opening surface of the insertion port 67 is formed approximately perpendicular to the length direction L. The insertion port 67 is formed on the side of the base end L2 of the box body 70. The insertion port 67 communicates with the sheath insertion area 74.

[0117] The first region 71 is the internal space for housing the clamp unit 1 in a manner that allows the clamp unit 1 to move in the length direction L. The first region 71 is connected to the sheath insertion region 74.

[0118] The sheath insertion area 74 is the area for inserting the front end of the sheath 220, which has passed through the insertion port 67. The sheath insertion area 74 is located on the base end side L2 of the first area 71 and is in communication with the first area 71.

[0119] [Filling method for fixture unit 1]

[0120] Next, refer to Figures 7-9 The loading method of fixture unit 1 will be explained.

[0121] Figures 7-9 This is a diagram illustrating the method of loading the fixture unit 1 into the fixture guide device 200 using the box 5.

[0122] Figure 7 This is a diagram showing the clamp unit 1 to be connected to the clamp guide device 200.

[0123] The user moves the sheath 220 toward the front end of the box 5. At this time, the user holds the box 5 with one hand while moving the sheath 220 with the other hand. By moving the sheath 220 further forward, the user brings the arrow hook 231 into contact with the connecting member 4.

[0124] Figure 8 This is a diagram showing the clamp unit 1 connected to the clamp guide device 200.

[0125] The user connects the engaging portion 231a of the arrow hook 231 to the connecting member 4 by advancing the sheath 220 further.

[0126] Figure 9 This is a diagram showing the situation where the clamp unit 1 is pulled out from the box 5.

[0127] The user moves the sheath 220 backward toward the base end L2 of the box 5. At this time, the user holds the box 5 with one hand while moving the sheath 220 with the other hand. The sheath 220 pulls the clamp unit 1 toward the base end L2. By moving the sheath 220 backward toward the base end L2 of the box 5, the user can pull the clamp unit 1 loaded in the clamp guide device 200 out of the box 5.

[0128] The clamp unit 1, which is pulled out from the box 5, can be used by passing through the treatment instrument channel 430 of the endoscope 400, which will be described later.

[0129] [Endoscopic System 500]

[0130] Here, refer to Figure 10 and Figure 11 The endoscopic system 500 will now be described.

[0131] Figure 10 This shows the state in which the sheath 220 of the clamping device 300 passes through the treatment instrument channel 430 of the endoscope 400. Figure 11 This is a perspective view showing the use of the endoscope system 500.

[0132] The system having clamp device 300 and endoscope 400 is designated as endoscope system 500. Endoscope system 500 is a system used during endoscopic treatment.

[0133] Endoscope 400 is a known direct-viewing flexible endoscope, comprising an elongated insertion portion 410, an endoscope operating portion 420, and a treatment instrument passage 430. The endoscope operating portion 420 is located at the proximal end of the insertion portion 410. In the following description, the side of endoscope 400 with the endoscope operating portion 420 is referred to as the proximal side. The side of the insertion portion 410 opposite to the endoscope operating portion 420 in the longitudinal axis direction is referred to as the distal side of the endoscope 400. The treatment instrument passage 430 allows treatment instruments such as clamping devices 300 to pass through. The treatment instrument passage 430 is a component through which treatment portions such as clamping units 1 can pass. Endoscope 400 may also be a side-viewing flexible endoscope.

[0134] A forceps jaw 440, communicating with the instrument passage 430, is provided at a position distal to the endoscope operating section 420. The user can insert endoscopic instruments such as clamping devices 300 through the forceps jaw 440. A forceps stopper 450 is installed in the forceps jaw 440 to prevent leakage of bodily fluids.

[0135] Here, the structure of the clamp device 300, which is compared with the endoscope 400, will be described.

[0136] The operating part 240 is configured not to penetrate the treatment device channel 430. Specifically, the outer diameter M1 of the operating part 240 is larger than the inner diameter M3 of the treatment device channel 430. The outer sheath 250 is configured to penetrate the treatment device channel 430. Specifically, the outer diameter M2 of the outer sheath 250 is smaller than the inner diameter M3 of the treatment device channel 430.

[0137] The length M7 of the clamping device 300 in the longitudinal direction K, from the front end of the clamping unit 1 to the front end of the outer sheath 250, is shorter than the length M6 of the treatment device channel 430. Specifically, with the sheath 220 extending through the treatment device channel 430 and the clamping unit 1 protruding from the front end of the treatment device channel 430, the front end of the outer sheath 250 is received within the treatment device channel 430.

[0138] In addition, such as Figure 12 and Figure 13As shown, alternatively, with the clamping unit 1 protruding from the front end of the treatment device channel 430, the front end of the outer sheath 250 may not be contained within the treatment device channel 430. Specifically, with the clamping unit 1 protruding from the front end of the treatment device channel 430, the length M8 between the front end of the outer sheath 250 and the jaws 440 may be less than 30 cm. In this case, the user can simultaneously rotate and move forward and backward near the jaws 440 while grasping a point on the outer sheath 250, allowing for intuitive operation.

[0139] [Function of clamping device 300]

[0140] Next, refer to Figure 10 and Figure 11 The function of the fixture device 300 will be explained.

[0141] like Figure 10 As shown, the clamping device 300 is used with the sheath 220 extending through the treatment device channel 430. The user extends the sheath 220 until the clamping unit 1 protrudes from the treatment device channel 430. At this time, the front end of the outer sheath 250 is received in the treatment device channel 430.

[0142] like Figure 11 As shown, the user operates the endoscope operating unit 420 with one hand and the outer sheath 250 with the other hand. When using the endoscope system 500, in addition to the user operating the endoscope 400, an assistant is needed to operate the operating unit 240 of the clamping device 300.

[0143] The user needs to rotate the clamp unit 1 appropriately. The user can rotate the clamp unit 1 circumferentially in the S direction by rotating the outer sleeve 250. When the outer sleeve 250 rotates circumferentially in the S direction, the rotation is transmitted sequentially to the operating unit body 241 and the operating line 230, causing the clamp unit 1 to rotate circumferentially in the S direction. That is, the force that rotates the outer sleeve 250 can be transmitted to the processing unit via the operating unit 240 and the operating line 230, and the outer sleeve 250 itself has the rigidity to transmit the force of rotation of the outer sleeve 250 to the operating unit 240. By rotating the clamp unit 1 circumferentially in the S direction, the user can operate the clamp unit 1 in a suitable orientation.

[0144] According to the clamping device 300 of this embodiment, the clamping unit 1 can be rotated by rotating the outer sheath 250, so the user can rotate the clamping unit 1 in the circumferential direction S while operating the endoscope 400. Specifically, the user can operate the endoscope operating part 420 with one hand and operate the outer sheath 250 with the other hand to rotate the clamping unit 1 in the circumferential direction S. Therefore, the clamping device 300 is very convenient to use.

[0145] According to the clamping device 300 of this embodiment, the operation line 230, which is the component that transmits the rotation of the outer sheath 250 to the clamping unit 1, is not subject to friction from the treatment instrument channel 430, thus rotation is easily transmitted. Specifically, the operation line 230 passes through the sheath 220, so it can rotate without friction from the treatment instrument channel 430. Therefore, when the sheath 220 passes through the treatment instrument channel 430, the clamping unit 1 can be easily rotated, and treatment using the clamping unit 1 can be performed smoothly.

[0146] According to the clamp device 300 of this embodiment, the outer sheath 250 can rotate relative to the sheath 220. Therefore, when the outer sheath 250 rotates in the circumferential direction S, the sheath 220 does not rotate in the circumferential direction S and is not affected by the friction between the sheath 220 and the treatment instrument channel 430. Thus, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be carried out smoothly.

[0147] According to the clamp device 300 of this embodiment, the outer sheath 250 is formed as a cylinder through which the sheath 220 passes, so that the user can easily rotate the outer sheath 250 in the circumferential direction S. Therefore, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be carried out smoothly.

[0148] According to the clamping device 300 of this embodiment, the outer sheath 250 has higher flexibility than the operating part 240, and can be bent along the sheath 220. Therefore, the clamping unit 1 can be rotated at a position far from the operating part 240, and the shape of the sheath 220 can be deformed. Thus, the clamping device 300 is easy to use.

[0149] According to the clamping device 300 of this embodiment, the outer diameter M2 of the outer sheath 250 is smaller than the inner diameter M3 of the treatment instrument channel 430, so it can be used with the outer sheath 250 extending through the treatment instrument channel 430. Therefore, it is possible to suppress factors that hinder operation, such as the front end of the outer sheath 250 contacting the jaws 440 when operating the clamping device 300, and the clamping device 300 is easy to use.

[0150] According to the clamping device 300 of this embodiment, the length M5 of the outer sheath 250 in the longitudinal direction K is longer than the length M4 of the operating part 240, so the user can operate the clamping unit 1 from a position farther away from the operating part 240. Therefore, the clamping device 300 has good ease of use.

[0151] According to the clamp device 300 of this embodiment, the length M5 of the outer sheath 250 in the longitudinal direction K is shorter than the length M9 of the sheath 220. Therefore, when the sheath 220 passes through the treatment instrument channel 430, the length of the outer sheath 250 passing through the treatment instrument channel 430 is shorter. Consequently, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be performed smoothly.

[0152] According to the clamping device 300 of this embodiment, the length M7 from the front end of the clamping unit 1 to the front end of the outer sheath 250 in the longitudinal direction K is shorter than the length M6 of the treatment instrument channel 430, so it can be used with the outer sheath 250 extending through the treatment instrument channel 430. When the front end of the treatment instrument channel 430 is aligned with the front end of the clamping unit 1, the front end of the outer sheath 250 also extends through the treatment instrument channel 430. Therefore, it is possible to suppress factors that hinder operation, such as the front end of the outer sheath 250 contacting the jaws 440 when operating the clamping device 300, and the clamping device 300 has good ease of use.

[0153] According to the clamping device 300 of this embodiment, with the sheath 220 penetrating through the treatment instrument channel 430 and the clamping unit 1 protruding from the front end of the treatment instrument channel 430, the front end of the outer sheath 250 is received within the treatment instrument channel 430. Therefore, it can be used with the outer sheath 250 penetrating through the treatment instrument channel 430. Consequently, factors that hinder operation, such as the front end of the outer sheath 250 contacting the jaws 440 during operation of the clamping device 300, can be suppressed, resulting in good ease of use for the clamping device 300.

[0154] According to the clamp device 300 of this embodiment, the operating part 240 has a first part 240a that can rotate in conjunction with the outer sheath 250 and a second part 240b that is connected to the first part 240a in a manner that allows it to rotate relative to the first part 240a. Therefore, when the user rotates the outer sheath 250 in the circumferential direction S and the first part 240a rotates in the circumferential direction S, the assistant operating the operating part 240 can support the second part 240b without obstructing the rotation of the first part 240a. Consequently, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be performed smoothly.

[0155] According to the clamping device 300 of this embodiment, the slider 242 is disposed in the first part 240a, so the assistant who operates the operation part 240 can easily move the slider 242 forward and backward in the length direction K, and the clamping device 300 is easy to use.

[0156] According to the clamp device 300 of this embodiment, the outer sheath 250 has an inner layer 251, an outer layer 252, and a middle layer 253 disposed radially between the inner layer 251 and the outer layer 252, and having a higher hardness than the inner layer 251 and the outer layer 252. Therefore, the outer sheath 250 can transmit the rotation applied to its front end to the operating part 240. Consequently, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be performed smoothly.

[0157] According to the clamp device 300 of this embodiment, the inner layer 251 is formed to contain resin, the outer layer 252 is formed to contain resin, and the middle layer 253 is formed to contain metal wire. Therefore, the outer sheath 250 has appropriate rigidity, which can transmit the rotation applied to its front end to the operating part 240. Thus, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be carried out smoothly.

[0158] (Variation Example 1)

[0159] [Operations Section 240B]

[0160] Next, refer to Figure 14 and Figure 15 The operation unit 240B of Modified Example 1 will be explained.

[0161] Figure 14 This is a cross-sectional view of the operating part 240B of Modified Example 1, showing a section along the length direction K.

[0162] Operating unit 240B is a variation of operating unit 240. Operating unit 240B differs from operating unit 240 in that it has a stop member 249.

[0163] The stop 249 is a member that restricts relative rotation between the first part 240a and the second part 240b. In the operating part 240B, the stop 249 is a member that restricts relative rotation between the operating part body 241 and the thumb ring 248. The stop 249 is, for example, an O-ring. Figure 14 As shown, the stop 249 is provided in the connection part between the operating part body 241 and the thumb ring 248.

[0164] Figure 15 yes Figure 14 An enlarged view of the area shown by the dashed line D13 of the operation unit 240B shown in the figure.

[0165] like Figure 15As shown, a radially embedded groove 241d is formed at the base end portion 241t of the operating part body 241. The groove 241d is formed on the outer periphery of the base end portion 241t of the operating part body 241. The stop member 249 is formed in an annular shape and is embedded in the groove 241d. The front end portion 248s of the thumb ring 248 is formed in a cylindrical shape and is installed to cover the outer periphery of the stop member 249. The stop member 249 is radially pressed by the outer peripheral surface of the base end portion 241t of the operating part body 241 and the inner peripheral surface of the front end portion 248s of the thumb ring 248.

[0166] The stop member 249 is a friction member that generates friction with the first part 240a. In the operating part 240B, the stop member 249 is a friction member that generates friction with the operating part body 241. The stop member 249 is a friction member that generates friction with the second part 240b. In the operating part 240B, the stop member 249 is a friction member that generates friction with the thumb ring 248. The stop member 249 is formed to include rubber.

[0167] The friction between the stop 249 and the operating part body 241 is determined by the rotational transmission capability of the outer sleeve 250. Specifically, the frictional force between the stop 249 and the operating part body 241 is greater than {rotation angle of the outer sleeve 250 × (1 - rotational transmission rate of the outer sleeve 250)} × torque required to rotate the outer sleeve 250 by 1 degree (N·mm / deg). For example, when the rotation operating angle of the outer sleeve 250 is 90°, the rotational transmission rate of the outer sleeve 250 is 33%, and the torque required to rotate the outer sleeve 250 is 10 N·mm / deg, a 60° torsion accumulates in the outer sleeve 250, therefore the frictional force of the stop 249 is, for example, greater than 600 N·mm. The friction between the stop 249 and the operating part body 241, and between the stop 249 and the thumb ring 248, is preferably greater than 10 mN·m. Furthermore, the friction between the stop 249 and the operating part body 241, as well as between the stop 249 and the thumb ring 248, can be 5 mN·m or more, or 10 mN·m or less.

[0168] With the outer sheath 250 extending through the handling instrument channel 430, friction occurs between the outer sheath 250 and the pliers bolt 450 when the outer sheath 250 rotates in the circumferential direction S. Therefore, even when the user rotates the outer sheath 250 in the circumferential direction S with a force less than the frictional force between the outer sheath 250 and the pliers bolt 450, the outer sheath 250 and the pliers bolt 450 do not rotate relative to each other in the circumferential direction S. Even when the outer sheath 250 and the pliers bolt 450 do not rotate relative to each other in the circumferential direction S, the clamp unit 1 will still rotate via the operating part 240 and the operating line 230 by twisting the outer sheath 250. However, if the twist of the outer sheath 250 is released, the clamp unit 1 will return to its original state. Therefore, the user needs to use a force greater than the frictional force between the outer sheath 250 and the pliers bolt 450 to rotate the outer sheath 250 in the circumferential direction S.

[0169] The operating part 240B has a stop 249, which allows the user to rotate the outer sheath 250 in the circumferential direction S with a force greater than or equal to that limited by the stop 249. This prevents the clamp unit 1 from rotating due to the torsion of the outer sheath 250. Therefore, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be performed smoothly.

[0170] By generating friction between the operating part body 241 and the stop 249, and friction between the thumb ring 248 and the stop 249, the user can rotate the outer sheath 250 in the circumferential direction S using a force greater than the frictional force between the operating part body 241 and the stop 249 and the frictional force between the thumb ring 248 and the stop 249. This prevents the clamp unit 1 from rotating due to the torsion of the outer sheath 250. Therefore, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, allowing for smooth treatment using the clamp unit 1.

[0171] When a force greater than a predetermined amount is applied to the operating unit body 241 and the treatment device channel 430 in the circumferential direction S, the operating unit body 241 and the treatment device channel 430 will rotate relative to each other in the circumferential direction S. Therefore, the user can rotate the outer sheath 250 in the circumferential direction S by a force greater than the frictional force between the operating unit body 241 and the stop 249 and the frictional force between the thumb ring 248 and the stop 249. Thus, the rotation of the clamp unit 1 due to the torsion of the outer sheath 250 can be suppressed, and the clamp unit 1 can be easily rotated when the sheath 220 passes through the treatment device channel 430, so that treatment using the clamp unit 1 can be carried out smoothly.

[0172] The stop 249 shown in Modification 1 is formed in a ring shape, but the shape of the stop 249 is not limited. The stop 249 only needs to be configured to restrict the relative rotation between the operating part body 241 and the thumb ring 248.

[0173] (Variation Example 2)

[0174] [Operations Section 240C]

[0175] Next, refer to Figures 16-22 The operation unit 240C of Modified Example 2 will be explained.

[0176] Figure 16 This is a side view showing the operating part 240C of Modified Example 2, showing a partial cross-section.

[0177] Operation unit 240C is a variation of operation unit 240. Operation unit 240C differs from operation unit 240 in that it has a rotary operation unit 243.

[0178] The rotating operating unit 243 is a component that is capable of rotating relative to the operating unit body 241 in the circumferential direction S. For example... Figure 16 As shown, the rotating operation unit 243 is disposed on the front end side of the operation unit body 241. The rotating operation unit 243 rotates relative to the operation unit body 241 in the circumferential direction S.

[0179] like Figure 16 As shown, the sheath 220 is connected to the rotary operating unit 243 via the anti-detachment member 241c. The sheath 220 is connected to the rotary operating unit 243 in a manner that prevents it from moving forward or backward relative to the rotary operating unit 243 in the longitudinal direction K. The sheath 220 is connected to the rotary operating unit 243 in a manner that allows it to rotate relative to the rotary operating unit 243 in the circumferential direction S.

[0180] Figure 17 This is a cross-sectional view of the operating unit 240C, showing a section along the length direction K.

[0181] like Figure 16 and Figure 17 As shown, the line member 232 passes through the through-path 243a formed inside the rotation operation part 243 and is connected to the slider 242 towards the base end side.

[0182] Figure 18 yes Figure 16 The cross-sectional view of the operating part 240C shown along line F14-F14. Figure 19 yes Figure 18 An enlarged view of the area shown by the dashed line D17 of the operating unit 240C shown in the figure.

[0183] The wire member 232 is configured to move forward and backward in the length direction K relative to the rotating operating part 243. The wire member 232 is configured to rotate in the circumferential direction S relative to the operating part body 241 in conjunction with the rotating operating part 243.

[0184] The online component 232 is provided with a rotation transfer component 232a that transfers the rotation of the rotating operation unit 243 along the circumferential S direction to the online component. For example... Figures 17-19 As shown, the rotary transmission member 232a is disposed on the outer periphery of the line member 232. The rotary transmission member 232a is disposed in the region of the outer periphery of the line member 232 that passes through the through path 243a in the length direction K. The rotary transmission member 232a is fixed relative to the line member 232.

[0185] The rotational transmission member 232a is a member that extends in the length direction K. The rotational transmission member 232a has a non-rotationally symmetric shape when viewed from the length direction K. For example, the rotational transmission member 232a has a U-shaped shape when viewed from the length direction K.

[0186] The through-path 243a through which the rotation transmission member 232a passes is shaped to restrict the rotation of the rotation transmission member 232a in the circumferential direction S when viewed from the longitudinal direction K. The through-path 243a is non-rotationally symmetric when viewed from the longitudinal direction K. The through-path 243a is, for example, generally rectangular. Therefore, the rotation transmission member 232a can move forward and backward in the through-path 243a in the longitudinal direction K, while simultaneously transmitting the rotation of the rotational operating unit 243 in the circumferential direction S to the linear member.

[0187] Figure 20 This is a side view showing the main body 241 of the operating unit, and a cross-section showing the slider 242. Figure 21 yes Figure 16 The shown is a cross-sectional view of the operating unit 240C along line F19-F19. Figure 22 yes Figure 21 An enlarged view of the area shown by the dashed line D20 of the operating unit 240C.

[0188] The line member 232 is configured to move forward and backward in the length direction K in conjunction with the slider 242. The line member 232 is configured to rotate relative to the slider 242 in the circumferential direction S.

[0189] The online component 232 is provided with an anti-detachment component 232b that transmits the sliding component 242 along the longitudinal direction K of the forward and backward direction of the online component 232. For example... Figures 20-22 As shown, the anti-detachment member 232b is disposed on the outer periphery of the wire member 232. The anti-detachment member 232b is disposed in the region of the outer periphery of the wire member 232 that overlaps with the sliding member 242 in the length direction K. The anti-detachment member 232b is disposed at the base end of the wire member 232. The anti-detachment member 232b is fixed relative to the wire member 232.

[0190] The anti-detachment component 232b is a member that extends in the length direction K. The anti-detachment component 232b is circular when viewed from the length direction K.

[0191] The anti-detachment component 232b is housed within a receiving space 242a formed inside the slider 242. For example... Figure 20 As shown, the length of the receiving space 242a in the longitudinal direction K is slightly longer than the length of the anti-detachment member 232b in the longitudinal direction K. Therefore, the movement of the anti-detachment member 232b relative to the receiving space 242a in the longitudinal direction K is restricted, and the forward and backward movement of the sliding member 242 in the longitudinal direction K is transmitted to the linear member 232. Figure 21 and Figure 22 As shown, the receiving space 242a, when viewed from the longitudinal direction K, is sized such that the anti-detachment member 232b can rotate in the circumferential direction S. Specifically, when viewed from the longitudinal direction K, the length of the largest portion of the anti-detachment member 232b is shorter than the length of the smallest portion of the receiving space 242a. For example, the receiving space 242a, when viewed from the longitudinal direction K, is formed as a roughly rectangular shape with sides larger than the diameter of the anti-detachment member 232b. Therefore, the anti-detachment member 232b can rotate in the circumferential direction S, while simultaneously transmitting the forward and backward movement of the sliding member 242 along the longitudinal direction K to the forward and backward movement of the linear member 232.

[0192] In the operating section 240C, the thumb ring 248 is fixed relative to the operating section body 241.

[0193] Similar to operation unit 240, operation unit 240C has a first portion 240a connected to the outer sheath 250 and a second portion 240b connected to the first portion 240a in a manner that allows it to rotate relative to the first portion 240a in the circumferential direction S. In operation unit 240C, the first portion 240a has a rotating operation part 243. In operation unit 240C, the second portion 240b has an operation part body 241, a slider 242, and a thumb ring 248.

[0194] According to the operating unit 240C, when the outer sheath 250 rotates in the circumferential direction S, the rotating operating unit 243 rotates in conjunction with it in the circumferential direction S, while the operating unit body 241 and the sliding member 242 rotate independently. Therefore, it is easy for the operator of the operating unit 240C to maintain the position of the sliding member 242. The clamping device 300 equipped with the operating unit 240C offers excellent ease of use.

[0195] The operating part 240C has a rotation transmission member 232a and an anti-detachment member 232b, but the structure of the operating part 240C is not limited. The operating part 240C can be any structure in which the first part 240a has a rotating operating part 243 and the second part 240b has an operating part body 241, a sliding member 242 and a thumb ring 248.

[0196] (Variation Example 3)

[0197] [Operations Department 240D]

[0198] Next, refer to Figure 23 The operation unit 240D of Modified Example 3 will be explained.

[0199] Figure 23 This is a cross-sectional view of the operating part 240D of Modified Example 3, showing a section along the length direction K.

[0200] Operating section 240D is a variation of operating section 240C. Operating section 240D differs from operating section 240C in that it has a stop member 249.

[0201] In the operating section 240D, the stop member 249 is a component that restricts the relative rotation in the circumferential direction S between the rotating operating section 243 and the operating section body 241. For example... Figure 23 As shown, the stop 249 is provided in the connection portion between the rotary operating part 243 and the operating part body 241.

[0202] According to the operating unit 240D, the user rotates the outer sheath 250 in the circumferential direction S with a force greater than or equal to that limited by the stop member 249, thereby preventing the clamp unit 1 from rotating due to the torsion of the outer sheath 250. Therefore, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be carried out smoothly.

[0203] (Variation Example 4)

[0204] [Outer Sheath 250E]

[0205] Next, refer to Figures 24-26 The outer sheath 250E of variant example 4 will be explained.

[0206] Figure 24 This is a side view showing the outer sheath 250E of variant example 4.

[0207] The outer sheath 250E is a variation of the outer sheath 250. The outer sheath 250E is configured to be able to stretch and retract in the length direction K.

[0208] The outer sheath 250E is a component capable of transitioning between a shortened state and an extended state. The shortened state refers to a state having a first length in the length direction K. The extended state refers to a state having a second length in the length direction K that is longer than the first length. For example, as... Figure 24 As shown, the outer sheath 250E is corrugated. Whether in the shortened or extended state, the outer sheath 250E can rotate circumferentially in the S direction relative to the sheath 220.

[0209] The outer sheath 250E is designed to be telescopic, allowing adjustment of its length in the longitudinal direction K. Therefore, the clamping device 300 equipped with the outer sheath 250E offers good ease of use.

[0210] Figure 25 This is a side view showing the outer sheath 250E configured to be retractable.

[0211] The structure of the 250E outer sheath is not specified. For example... Figure 25 As shown, the outer sheath 250E can also be a structure in which multiple cylindrical components of different sizes in the radial direction are connected together in the longitudinal direction K.

[0212] Figure 26 This is a side view showing a transmission member 250Ea configured to extend and retract in the length direction K.

[0213] like Figure 26 As shown, the outer sheath 250E can also be replaced by a transmission member 250Ea configured to extend and retract in the length direction K in the clamping device 300. Figure 26 The transmission member 250Ea shown is a member formed by cutting a notch in a plate-shaped member that is capable of elastic deformation.

[0214] In the clamping device 300 of this embodiment, an outer sheath 250 is provided, but it is sufficient to provide a transmission member that is fixed to the operating part 240 and can transmit rotation in the circumferential direction S to the operating part 240.

[0215] In the clamping device 300 of this embodiment, the outer sheath 250 has an inner layer 251, an outer layer 252, and a middle layer 253, but the structure of the outer sheath 250 is not limited. The outer sheath 250 may be, for example, a single-layer tube. The outer sheath 250 may also be, for example, a coil. The outer sheath 250 is only required to have a structure that can transmit rotation in the circumferential direction S to the operating part 240.

[0216] In the fixture device 300 of this embodiment, the fixture unit 1 is loaded into the fixture unit 1 using the box 5, but the structure of the fixture unit 1 is not limited. The fixture unit 1 may also be pre-installed in the fixture guide device 200. Alternatively, a new fixture unit 1 may be reloaded (re-loaded) into the fixture guide device 200 using the box 5.

[0217] In this embodiment, the treatment unit is the clamp unit 1, but the treatment unit is not limited to this. The treatment unit can be any component that is mounted relative to the clamp guide device 200 and used for endoscopic treatment, such as forceps or a knife.

[0218] In this embodiment, the clamp device 300 is used as an example of a medical device, but in medical devices such as forceps or knives where the treatment part is connected to the feeder, the clamp guide device 200 can be used as the feeder.

[0219] 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 possible. In addition, the constituent elements shown in the above-described embodiments and variations can be appropriately combined to form a complete system.

[0220] (Second Implementation)

[0221] [Clamping Device 300F]

[0222] Reference Figure 27 and Figure 29 The clamping device 300F according to the second embodiment of the present invention will now be described. The clamping device 300F of the second embodiment differs in structure from the clamping device 300 of the first embodiment in that the clamping guide device has a different structure. In the following description, the same reference numerals are used to denote structures common to those already described, and repeated descriptions are omitted.

[0223] Figure 27 This is a side view showing the clamping device 300F of the second embodiment.

[0224] The fixture device 300F includes a fixture guide device 200F and a fixture unit 1. The fixture unit 1 is loaded into the fixture guide device 200F.

[0225] The clamp unit 1 and the sheath 220 are not fixed together. Moreover, the clamp unit 1 is capable of rotating relative to the sheath 220 in the circumferential direction S.

[0226] [Clamping guide device 200F]

[0227] The fixture guide device 200F includes a protective sleeve 220, an operating line 230, and an operating part 240. Unlike the fixture guide device 200, the fixture guide device 200F does not require an outer protective sleeve 250.

[0228] In the clamp guide device 200F, the sheath 220 is fixed together with the operating part 240. The connecting part 200f between the sheath 220 and the operating part 240 is, for example, glued together.

[0229] If the sheath 220 rotates in the circumferential direction S, the operating part 240 also rotates in the circumferential direction S in a coordinated manner. The clamping unit 1, the operating line 230, the operating part 240, and the sheath 220 can rotate in the circumferential direction S in a coordinated manner. Therefore, by rotating the sheath 220 in the circumferential direction S, the user can rotate the clamping unit 1 via the operating part 240 and the operating line 230.

[0230] Figure 28 The image shows the state in which the sheath 220 of the clamping device 300F passes through the treatment instrument channel 430 of the endoscope 400.

[0231] like Figure 28 As shown, the clamping device 300F is used with the sleeve 220 extending through the treatment device channel 430. The user extends the sleeve 220 until the clamping unit 1 protrudes from the treatment device channel 430.

[0232] The user operates the endoscope operating unit 420 with one hand and the sheath 220 with the other. In addition to the user operating the endoscope 400, an assistant is required to operate the operating unit 240 of the clamping device 300F.

[0233] The user needs to rotate the clamp unit 1 appropriately. The user can rotate the clamp unit 1 by rotating the sleeve 220 in the circumferential direction S. If the sleeve 220 rotates in the circumferential direction S, the rotation is transmitted sequentially to the operating part body 241 and the operating line 230, and the clamp unit 1 rotates. By rotating the clamp unit 1, the user can operate the clamp unit 1 in a suitable orientation.

[0234] According to the clamping device 300F of this embodiment, the clamping unit 1 can be rotated by rotating the sheath 220 in the circumferential direction S, so the user can operate the endoscope 400 while rotating the clamping unit 1. Specifically, the user can operate the endoscope operating part 420 with one hand and operate the sheath 220 with the other hand to rotate the clamping unit 1. Therefore, the clamping device 300F is very convenient to use.

[0235] According to the clamping device 300F of this embodiment, the operation line 230, which is the component that transmits the rotation of the sheath 220 in the circumferential S direction to the clamping unit 1, is not subject to friction from the treatment device channel 430, thus the rotation is easily transmitted. Specifically, the operation line 230 passes through the sheath 220, so it can rotate in the circumferential S direction without friction from the treatment device channel 430. The sheath 220 passes through the treatment device channel 430, but as Figure 28As shown, the portion that transmits rotation in the circumferential S direction to the operating part 240 is exposed from the treatment instrument channel 430. Therefore, when the rotation in the circumferential S direction of the sheath 220 is transmitted to the operating part 240, it is less affected by friction between the sheath 220 and the treatment instrument channel 430. Consequently, when the sheath 220 passes through the treatment instrument channel 430, the clamp unit 1 can be easily rotated, and treatment using the clamp unit 1 can be performed smoothly.

[0236] (Variation Example 5)

[0237] [Clamping components 300G]

[0238] Next, refer to Figure 29 The fixture device 300G of Modified Example 5 will be described.

[0239] Figure 29 This is a side view showing the clamp device 300G of variant 5.

[0240] The clamping device 300G is a variation of the clamping device 300F. The clamping device 300G differs from the clamping device 300F in that it has a gripping part 200g.

[0241] The grip 200g is a component held by the user when the sleeve 220 is rotated in the circumferential direction S. The grip 200g is provided on the sleeve 220. The grip 200g is connected to the outer periphery of the sleeve 220. The grip 200g is a component capable of sliding along the length direction K on the sleeve 220. The outer diameter of the grip 200g is larger than the outer diameter of the sleeve 220. The grip 200g has a shape that is easy to grip. The grip 200g has an outer diameter that is easy to grip.

[0242] The grip portion 200g is, for example, a component with a slit formed on its inner diameter side, which can be flattened by the user's grip, allowing the user to hold the sheath 220. The grip portion 200g is, for example, a cylindrical rubber component. The user can move the grip portion 200g to an easy-to-grip position and hold it.

[0243] By providing a grip 200g, the user can easily rotate the sheath 220 in the circumferential direction S. Therefore, the clamping device 300F is easy to use.

[0244] 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-described embodiments and variations can be appropriately combined to form a configuration.

Claims

1. A medical device, characterized in that, This medical device has the following features: Sheath, which extends in the length direction; A processing unit is disposed on the front end side of the sheath; A wire component that penetrates the sheath, and the disposal part that is fixed to the wire component; A handle is disposed on the base end side of the sheath, and the wire member is fixed to the handle; as well as A transfer member, disposed on the outer periphery of the sheath, extends from the handle toward the front end. The processing unit, the line member, the handle, and the transmission member are capable of rotating in conjunction with the sheath in a circumferential direction relative to the length direction.

2. The medical device according to claim 1, characterized in that, The transmission member is formed into a cylindrical shape through which the sheath passes.

3. The medical device according to claim 1, characterized in that, The handle has: Handle body; and A slider, supported on the handle body, is capable of moving forward and backward along the length direction. The linear component is connected to the sliding member and can move forward and backward in the length direction in conjunction with the sliding member. The transmission member has greater flexibility than the handle and is able to bend along the sheath.

4. The medical device according to claim 1, characterized in that, The outer diameter of the handle is larger than the inner diameter of the endoscope channel through which the treatment section can pass. The outer diameter of the transmission component is smaller than the inner diameter of the endoscope channel.

5. The medical device according to claim 1, characterized in that, In the longitudinal direction, the length of the transmission member is longer than the length of the handle.

6. The medical device according to claim 1, characterized in that, In the length direction, the length of the transmission member is shorter than the length of the sheath.

7. The medical device according to claim 1, characterized in that, In the longitudinal direction, the length from the front end of the treatment section to the front end of the transmission member is shorter than the length of the endoscope channel through which the treatment section can pass.

8. The medical device according to claim 7, characterized in that, With the treatment section extending through the endoscope channel and protruding from the front end of the endoscope channel, The front end of the delivery component is housed within the endoscope channel.

9. The medical device according to claim 1, characterized in that, With the treatment section extending through the endoscope channel and protruding from the front end of the endoscope channel, The length between the front end of the transmission component and the forceps jaw of the endoscope channel is less than 30 cm.

10. The medical device according to claim 1, characterized in that, The handle has: The first part, which is connected to the transmission member and is capable of rotating in conjunction with the transmission member; and The second part is capable of rotating relative to the first part.

11. The medical device according to claim 10, characterized in that, The handle has: Handle body; and A slider, supported on the handle body, is capable of moving forward and backward along the length direction. The slider is disposed in the first part.

12. The medical device according to claim 10, characterized in that, The handle has: Handle body; and A slider, supported on the handle body, is capable of moving forward and backward along the length direction. The slider is configured in the second part.

13. The medical device according to claim 10, characterized in that, The handle has a stop between the first part and the second part to limit relative rotation between the first part and the second part.

14. The medical device according to claim 13, characterized in that, The stop is a friction member that generates friction with the first part and with the second part.

15. The medical device according to claim 14, characterized in that, With the treatment section penetrating through the endoscope channel through which the treatment section can pass. The friction between the stop and the first part, and the friction between the stop and the second part, are determined by the rotational transmission property of the transmission member.

16. The medical device according to claim 13, characterized in that, The friction between the stop and the first part, and the friction between the stop and the second part, are greater than 10 mN·m.

17. The medical device according to claim 1, characterized in that, The transmission component has greater flexibility than the handle. The transmission component has: Inner layer; Outer layer; and The middle layer, which is disposed radially between the inner layer and the outer layer, has a higher hardness than the inner layer and the outer layer.

18. The medical device according to claim 1, characterized in that, The transmission member can be transformed into a shortened state having a first length in the length direction and an extended state having a second length longer than the first length in the length direction.

19. The medical device according to claim 1, characterized in that, The medical device is configured such that the force that causes the transmission member to rotate can be transmitted to the treatment unit via the handle and the wire member.

20. A medical device, characterized in that, This medical device has the following features: A sheath that extends along its length; A processing unit is disposed on the front end side of the sheath; A wire component that penetrates the sheath, and the disposal part that is fixed to the wire component; as well as A handle is disposed on the base end side of the sheath, and the wire component is fixed to the handle. The sheath is fixed to the handle. The processing unit, the wire component, the handle, and the sheath are capable of rotating in a coordinated manner in the circumferential direction relative to the length direction. The treatment unit is capable of rotating relative to the sheath in the circumferential direction.

21. The medical device according to claim 20, characterized in that, The medical device has a grip portion connected to the sheath. The gripping part is slidable on the sheath and has an outer diameter larger than the outer diameter of the sheath.

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