WO2017183151A1 - 内視鏡用処置具 - Google Patents
内視鏡用処置具 Download PDFInfo
- Publication number
- WO2017183151A1 WO2017183151A1 PCT/JP2016/062617 JP2016062617W WO2017183151A1 WO 2017183151 A1 WO2017183151 A1 WO 2017183151A1 JP 2016062617 W JP2016062617 W JP 2016062617W WO 2017183151 A1 WO2017183151 A1 WO 2017183151A1
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- WIPO (PCT)
- Prior art keywords
- shaft
- index
- tip
- distal end
- treatment tool
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/273—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
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- A—HUMAN NECESSITIES
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- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
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- A61B17/2909—Handles
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- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1482—Probes or electrodes therefor having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
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- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
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- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
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- A61B2018/00482—Digestive system
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- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0807—Indication means
- A61B2090/0811—Indication means for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
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- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
- A61B90/37—Surgical systems with images on a monitor during operation
- A61B2090/376—Surgical systems with images on a monitor during operation using X-rays, e.g. fluoroscopy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3937—Visible markers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/007—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests for contrast media
Definitions
- the present invention relates to an endoscope treatment tool.
- a technique for imaging a bile duct or pancreatic duct by inserting a catheter inside the bile duct or pancreatic duct is known.
- a catheter used in such a procedure is inserted into the bile duct and pancreatic duct from the duodenum of the patient through the duodenal papilla under an endoscopic view.
- Patent Document 1 discloses a shape memory member that can bend in a predetermined direction when the temperature of the endoscope treatment instrument having a tube that is inserted into the bile duct or pancreatic duct through the duodenal papilla becomes higher than the body temperature. It is disclosed that it is attached to the distal end portion of the tube.
- the endoscope When inserting an endoscopic treatment tool such as a catheter into the bile duct or pancreatic duct under endoscopy, the endoscope is used to observe the duodenal papilla and enter the bile duct or pancreatic duct from the duodenal papilla. Insert an endoscopic treatment tool. At this time, the part inserted into the bile duct or pancreatic duct in the endoscope treatment tool cannot be visually recognized by the endoscope. For this reason, the position and posture of the portion inserted into the bile duct or pancreatic duct are confirmed using an X-ray image.
- An object of the present invention is to provide an endoscopic treatment instrument that can easily grasp the posture of an endoscopic treatment instrument inserted into a bile duct or pancreatic duct using an endoscopic image.
- One aspect of the present invention relates to a treatment instrument insertion channel, an elevator for raising a treatment instrument inserted through the channel, and an endoscope having an observation optical system.
- a long-axis member having a base end and a lumen along the longitudinal axis, a blade provided between a tip end and a base end of the long-axis member, and a tip-side index disposed on the blade
- the distal-side index may be disposed between a position 5 cm from the distal end of the long-axis member and a position 10 cm from the distal end of the long-axis member, and the proximal-side index is defined by the long-axis member. You may arrange
- the base end side index is set so that the base end of the blade is positioned closer to the base end side of the long-axis member than the base end of the raising base in a state where the base end side index is located in an observation field of view by the observation optical system. It may be.
- the long shaft member is disposed between a tip of the tip side index and a tip of the long shaft member, and has a curved shape in which the longitudinal axis of the long shaft member is curved, and has a restoring force to the curved shape.
- the tip end of the tip side index may be arranged near the base end of the precurve portion in the longitudinal axis direction of the long shaft member.
- a long-axis member having a distal end and a base end and having a lumen along the longitudinal axis, and the longitudinal axis of the long-axis member rotatably with respect to the long-axis member.
- a pre-curve portion provided at a distal end portion of the long-axis member and having a restoring force to a curved shape in which the long axis of the long-axis member is curved, and A proximal end of the long shaft member that is located on the proximal end side of the long shaft member relative to the proximal end; a blade fixed to the distal end of the wire; the long shaft member; a proximal end index disposed on an outer peripheral surface of the blade;
- An endoscope treatment tool comprising: a distal-side index disposed on an outer peripheral surface of the blade on the distal side of the long shaft member with respect to a side index.
- the endoscope treatment tool includes a treatment portion provided at a distal end portion of the pre-curve portion, an operation portion provided at a proximal end portion of the long shaft member, and operating the treatment portion, A rotation torque input unit that protrudes from an opening formed in the operation unit and inputs a rotation torque to the wire.
- the treatment tool for a mirror has a joint for joining the distal end of the wire and the blade, and the joint is located in the observation field of view by the observation optical system. It is the treatment tool for endoscopes set so that it may be located in the base end side of the shaft rather than the base end.
- the posture of the endoscopic treatment tool inserted into the bile duct or pancreatic duct can be easily grasped using the endoscopic image.
- FIG. 1 is an overall view showing a state in which an endoscope treatment tool according to a first embodiment of the present invention is attached to an endoscope. It is a fragmentary sectional view in the side view of the treatment tool for endoscopes.
- FIG. 3 is a cross-sectional view taken along line A1-A1 of FIG. It is a fragmentary sectional view in side view when the precurve part of the treatment tool for endoscopes is in a curved state.
- FIG. 5 is a cross-sectional view taken along line A2-A2 of FIG. It is a mimetic diagram showing the endoscopic treatment tool reflected in the endoscopic image in the state where the endoscopic treatment tool is inserted into the bile duct through the duodenal papilla.
- FIG. 21 is a cross-sectional view taken along line A7-A7 in FIG.
- FIG. 21 is a cross-sectional view taken along a cutting line A8-A8 in FIG.
- FIG. 21 is a sectional view taken along line A9-A9 in FIG.
- FIG. 1 is an overall view showing a state in which an endoscope treatment tool (including a bile duct insertion catheter) according to the present embodiment is inserted into a treatment tool channel of an endoscope.
- FIG. 2 is a partial cross-sectional view of the endoscope treatment tool in a side view.
- 3 is a cross-sectional view taken along line A1-A1 of FIG.
- FIG. 4 is a partial cross-sectional view in a side view when the pre-curve portion of the endoscope treatment tool is in a curved state.
- FIG. 5 is a sectional view taken along line A2-A2 of FIG.
- the endoscope treatment tool 1 of this embodiment includes a shaft 2.
- the shaft 2 has a distal end 2a and a proximal end 2b, and extends along the longitudinal axis L1. As shown in FIGS. 2 and 3, the shaft 2 includes a lumen tube 3 and a blade 8.
- the lumen tube 3 is a tube having at least one lumen. This lumen is used for various purposes, such as for inserting a guide wire or for feeding a liquid such as a contrast medium.
- the lumen tube 3 may be a multi-lumen tube 3x as shown in FIG. Three lumens (first lumen 4, second lumen 5, third lumen 6) are formed in the multi-lumen tube 3x.
- the first lumen 4 is a lumen for inserting a medical guide wire (not shown).
- the second lumen 5 is a lumen for feeding a liquid such as a contrast medium from the proximal end 2b of the shaft 2 to the distal end 2a.
- the third lumen 6 may be used as a lumen through which the treatment portion can be inserted, other than for inserting a guide wire and feeding a liquid such as a contrast medium.
- the blade 8 is a cylindrical member surrounding the lumen tube 3.
- the blade 8 is disposed in a part of the lumen tube 3 near the tip 3a.
- the tip 8a of the blade 8 of the present embodiment is located a predetermined distance away from the tip 3a of the lumen tube 3 toward the base end 3b.
- the blade 8 is formed, for example, in a tubular shape by knitting a bundle of wire rods made of a plurality of thin stainless steels in a lattice shape.
- the blade 8 is not limited to this, but a wire rod such as a stainless steel wire or a stainless steel wire is wound into a single or multi-strand coil shape to form a tubular shape, or the winding direction of the single or multi-strand coil is alternately changed.
- the blade 8 reinforces the shaft 2 so that the rotation of the shaft 2 at the tip 8a of the blade 8 preferably follows the rotation of the shaft 2 at the base end 8b of the blade 8.
- the predetermined region in the vicinity of the tip of the shaft 2 refers to a region that is assumed to be inserted into the bile duct or pancreatic duct in a procedure using the endoscope treatment tool 1 of the present embodiment.
- the longitudinal axis L2 of the blade 8 is coaxial with the longitudinal axis L1 of the shaft 2, as shown in FIGS.
- the length of the blade 8 in the direction of the longitudinal axis L2 of the blade 8 is such that when the procedure is performed by inserting the shaft 2 from the distal end 2a of the shaft 2 into the bile duct or pancreatic duct, a part of the blade 8 on the proximal end 8b side is always in the duodenum. It is set in consideration of being located from the nipple to the duodenum.
- the base end 8b of the blade 8 is located at a position 15 cm or more away from the tip 2a of the shaft 2 toward the base end 2b.
- a covering member 9 that covers the outer peripheral surface of the blade 8 may be provided.
- the outer peripheral surface 9 c of the covering member 9 constitutes the outer peripheral surface 2 c of the shaft 2 between the distal end 9 a and the base end 9 b of the covering member 9.
- the covering member 9 covers at least the tip 8 a of the blade 8 to the base end 8 b of the blade 8.
- the covering member 9 is transparent or translucent, and the outer peripheral surface of the blade 8 can be imaged by the imaging unit (observation optical system) 102 of the endoscope 100.
- Disposed on the outer peripheral surface of the blade 8 are a distal-side index 11 and a proximal-side index 12 that can be imaged by the imaging unit 102 of the endoscope 100.
- the covering member 9 is transparent or semi-transparent, so that the distal end side index 11 and the proximal side index 12 are imaged by the imaging unit 102. it can.
- the distal end side index 11 and the proximal end side index 12 are not necessarily arranged on the outer circumferential surface of the blade 8, and may be arranged on the outer circumferential surface 9 c of the covering member 9, for example.
- the distal-side index 11 and the proximal-side index 12 arranged on the outer circumferential surface of the blade 8 are also the distal-side index arranged on the outer circumferential surface 9 c of the covering member 9 that covers the outer circumferential surface of the blade 8.
- 11 and the proximal index 12 are also described as being arranged on the outer peripheral surface of the blade 8.
- the distal index 11 takes into account that the distal index 11 is exposed from the duodenal papilla to the duodenum when the shaft 2 is rotated while the shaft 2 is inserted from the distal end 2a into the bile duct or pancreatic duct through the duodenal papilla. Is set. Specifically, the distal end side index 11 indicates that when the shaft 2 is raised by the raising base 106 of the endoscope 100, the distal end 2a of the shaft 2 is connected to the common bile duct and gallbladder in the body as shown in FIG.
- the distal-side index 11 When positioned at a branching portion with the tube, the distal-side index 11 is arranged so as to be positioned within an observation field of view by the imaging unit (observation optical system) 102, as shown in FIG.
- the tip side index 11 is disposed at least between a position 5 cm from the tip of the shaft 2 and a position 10 cm from the tip of the shaft 2.
- the tip side indicator 11 arranged between the position 5 cm from the tip of the shaft 2 and the position 10 cm from the tip of the shaft 2 may be arranged in the whole area between them, or locally (partially). It may be arranged.
- the tip side index 11 extends in the direction of the longitudinal axis L1 of the shaft 2. That is, it is preferable that at least a part of the tip side index 11 extends in a direction intersecting with the winding direction of the wire constituting the blade 8. Further, when a colored marker made of paint or the like is used as the tip side index 11, it is preferable that the color is different from the color of the outer peripheral surface of the blade 8. For example, when the outer peripheral surface of the blade 8 is gray, the color is green. And blue are preferred.
- the proximal index 12 When the shaft 2 is rotated while the shaft 2 is inserted from the distal end 2a into the bile duct or pancreatic duct through the duodenal papilla, the proximal index 12 is exposed from the duodenal papilla into the duodenum. Is set in consideration of Specifically, the proximal-side index 12 indicates that the distal end 2a of the shaft 2 is connected to the right hepatic duct and the left as shown in FIG. 13 in a state where the shaft 2 is raised by the raising base 106 of the endoscope 100.
- the proximal index 12 When located at the branching portion with the hepatic duct, the proximal index 12 is arranged so as to be located within the observation field of view by the imaging unit (observation optical system) 102 as shown in FIG.
- the proximal end index 12 is disposed at least between a position 10 cm from the tip of the shaft 2 and a position 15 cm from the tip of the shaft 2.
- tip of the shaft 2 may be distribute
- the shaft 2 When the shaft 2 is inserted into the nipple in a state where the nipple is caught in the observation field of view by the imaging unit 102 of the endoscope 100, the shaft 2 needs to be largely curved with a small curvature radius by the raising base 106 of the endoscope 100. is there. At this time, the shaft 2 curved by the elevator 106 is greatly curved with a smaller radius of curvature than the channel 51 curved by the insertion body 101 of the endoscope 100 being curved.
- the base end 8 b of the blade 8 is positioned closer to the base end side of the shaft 2 than the base end 106 a of the elevator 106 in a state where the base end side index 12 is positioned within the observation field of view by the imaging unit 102.
- the blade 8 that is excellent in flexibility and torque transmission is set in a region curved by the elevator 106. Therefore, torque transmission from the proximal end side to the distal end side of the shaft 2 can be maintained while maintaining the state in which the proximal end index 12 is captured in the observation visual field range of the imaging unit of the endoscope 100.
- the base end side index 12 extends in the direction of the longitudinal axis L1 of the shaft 2. That is, it is preferable that at least a part of the base end side index 12 extends in a direction intersecting the winding direction of the wire constituting the blade 8. Moreover, when using the marker colored by a paint etc. as the base end side parameter
- the distal end side index 11 and the proximal end side index 12 are arranged in substantially the same straight line. More preferably, the tip side index 11 may include a tip side first index 11x and a tip side second index 11y. Further, the base end side indicator 12 may also have a base end side first indicator 12x and a base end side second indicator 12y.
- the distal-side first index 11 x and the proximal-side first index 12 x extend along the longitudinal axis L 1 of the shaft 2.
- the distal-side first index 11x and the proximal-side first index 12x are arranged in a region that is less than or equal to a half circumference of the outer periphery of the shaft 2 in the circumferential direction of the shaft 2.
- the widths of the distal-side first index 11x and the proximal-side first index 12x when measured in the circumferential direction of the shaft 2 along the outer peripheral surface 2c of the shaft 2 are both constant in the longitudinal axis L1 direction of the shaft 2.
- the distal-side second index 11y and the proximal-side second index 12y also extend along the longitudinal axis L1 of the shaft 2, similarly to the distal-side first index 11x and the proximal-side first index 12x.
- the distal-end-side second indicator 11 y and the proximal-end-side second indicator 12 y are arranged in a region that is less than or equal to a half circumference of the outer periphery of the shaft 2 in the circumferential direction of the shaft 2.
- the widths of the distal-end-side second indicator 11y and the proximal-end-side second indicator 12y when measured in the circumferential direction of the shaft 2 along the outer peripheral surface of the shaft 2 are both constant in the longitudinal axis L1 direction of the shaft 2. Some are preferred.
- the tip-side second indicator 11y is arranged on the opposite side in the radial direction of the shaft 2 with respect to the tip-side first indicator 11x.
- the proximal second index 12y is arranged on the opposite side in the radial direction of the shaft 2 with respect to the proximal first index 12x.
- the tip-side second indicator 11y is disposed on the opposite side of the tip-side first indicator 11x with the longitudinal axis L1 (center line) of the shaft 2 interposed therebetween.
- the proximal second index 12y is disposed on the opposite side of the proximal first index 12x with the longitudinal axis L1 (center line) of the shaft 2 interposed therebetween.
- the base end 12b of the base end side indicator 12 may be located at a position farther toward the tip 2a side than the base end 2b of the shaft 2.
- the front end 11a of the front end side index 11 may be at a position farther toward the base end 2b side than the front end 2a of the shaft 2, for example.
- the distal end side index 11 may be in the vicinity of the distal end 8 a of the blade 8, for example, a position slightly away from the distal end 8 a of the blade 8 toward the proximal end 2 b of the shaft 2. Further, as shown in FIG.
- the width of the tip side index 11 when measured in the circumferential direction of the shaft 2 along the outer circumferential surface of the shaft 2 is the circumferential direction of the shaft 2 along the outer circumferential surface of the shaft 2. It may be equal to the width of the base end side index 12 measured in
- the tip side first indicator 11x and the tip side second indicator 11y are not continuous with the tip side first indicator 11x and the tip side second indicator 11y in the circumferential direction of the shaft 2. That is, in the circumferential direction of the shaft 2, there is a gap between the tip side first index 11x and the tip side second index 11y. Further, in the base end side first index 12x and the base end side second index 12y, the base end side first index 12x and the base end side second index 12y are not continuous in the circumferential direction of the shaft 2. That is, in the circumferential direction of the shaft 2, there is a gap between the proximal first index 12x and the proximal second index 12y.
- the distal-side first index 11x and the distal-side second index 11y are not limited to this, and the distal-side first index 11x and the distal-side second index 11y may be adjacent to each other in the circumferential direction of the shaft 2 without a gap. .
- the color of the tip side first index 11x is such that the boundary between the tip side first index 11x and the tip side second index 11y can be discriminated on the endoscopic image.
- the color of the tip side second index 11y is different from each other.
- the distal-side first index 11x and the distal-side second index 11y have been described, but the same applies to the proximal-side first index 12x and the proximal-side second index 12y. That is, in the proximal end side first indicator 12x and the proximal end side second indicator 12y, the proximal end side first indicator 12x and the proximal end side second indicator 12y may be adjacent to each other without any gap in the circumferential direction of the shaft 2. .
- the color and proximal side of the proximal first indicator 12x are such that the boundary between the proximal first indicator 12x and the proximal second indicator 12y can be discriminated on the endoscopic image.
- the color of the second index 12y is different from each other.
- the endoscope treatment tool 1 may be provided with a pre-curved portion 7 having a predetermined curved shape in the vicinity of the distal end 3a of the lumen tube 3 as shown in FIG.
- the pre-curve portion 7 is arranged between the tip 11 a of the tip-side index 11 and the tip 2 a of the shaft 2.
- the pre-curve portion 7 is provided with a predetermined bending curve with respect to the lumen tube 3. That is, the pre-curve portion 7 has a restoring force to the predetermined curved shape. For this reason, after the precurve portion 7 receives an external force and is linearized, when the external force is eliminated, the precurve portion 7 can be restored to the original curved shape.
- the curved shape of the pre-curved portion 7 is such that when the shaft 2 is projected from the distal end of the treatment instrument channel 103 of the side-view type endoscope 100 (see FIG. 1), the distal end 2a of the shaft 2 is made into the duodenal papilla. It is configured taking into account that the posture is easy to insert.
- the precurve portion 7 is provided in the vicinity of the distal end 3a of the lumen tube 3, the distal end 8a of the blade 8 is located closer to the proximal end 3b than the proximal end 7b of the precurved portion 7 as shown in FIG. ing.
- the distal end side first index 11 x and the proximal end side first index 12 x are associated with the shape of the pre-curve portion 7 of the shaft 2.
- the front end 2a of the shaft 2 is positioned within the range of the width of the front end side first index 11x and the base end side first index 12x in a front view from the direction along the longitudinal axis L1 of the shaft 2. That is, the direction X1 that is orthogonal to the longitudinal axis L1 of the shaft 2 and goes from the longitudinal axis L1 to the distal end side first indicator 11x and the proximal end first indicator 12x is a front view from the direction along the longitudinal axis L1 of the shaft 2.
- the pre-curve portion 7 substantially coincides with the curve direction.
- the distal-end-side second index 11 y and the proximal-side second index 12 y are also associated with the shape of the pre-curved portion 7 of the shaft 2.
- the front end 2a of the shaft 2 is located within the range of the width of the front end side second indicator 11y and the base end side second indicator 12y in a front view from the direction along the longitudinal axis L1 of the shaft 2.
- a direction X2 perpendicular to the longitudinal axis L1 of the shaft 2 and extending from the longitudinal axis L1 toward the distal end side second indicator 11y and the proximal end second indicator 12y is a pre-curve in a front view from the direction along the longitudinal axis L1 of the shaft 2. It is opposite to the direction in which the part 7 curves.
- the endoscope treatment tool 1 of the present embodiment may include a treatment unit 13 and an operation unit 20.
- the treatment portion 13 is provided on the distal end side of the shaft 2, and the operation portion 20 is provided on the proximal end side of the shaft 2.
- the treatment section 13 includes a knife fixing section 18 fixed near the tip 3a (knife support section 14) of the multi-lumen tube 3x, and a knife wire 15 connected to the knife fixing section 18.
- the aforementioned third lumen 6 may be used as a lumen through which the knife wire 15 of the treatment section 13 is inserted. As shown in FIGS.
- two through holes 6 a and 6 b that are separated from each other in the direction of the longitudinal axis L ⁇ b> 1 of the shaft 2 are formed near the tip of the third lumen 6.
- the two through holes 6a and 6b are both in communication with the third lumen 6 and open on the outer peripheral surface of the multi-lumen tube 3x.
- a knife wire 15 is inserted through the two through holes 6a and 6b.
- the through-hole 6a on the tip 2a side of the shaft 2 is located slightly away from the tip 2a of the shaft 2 toward the base end 2b.
- the through hole 6 b on the base end 2 b side of the shaft 2 is located closer to the tip 2 a side of the shaft 2 than the tip 8 a of the blade 8.
- the distance between the two through holes 6a and 6b in the direction of the longitudinal axis L1 of the shaft 2 may be about 30 mm, for example.
- the above-described openings in the two through holes 6a and 6b face the inside (inner peripheral side) of the curve of the pre-curve portion 7 described above.
- the distal end 11a of the distal end side index 11 is positioned in the vicinity of the proximal end side through hole 6b formed in the multi-lumen tube 3x and closer to the proximal end side than the through hole 6b, for example, in the longitudinal axis L1 direction of the shaft 2. To do.
- the knife wire 15 is connected to the knife fixing portion 18 and is connected to the knife portion 16 disposed outside the multi-lumen tube 3x, and a conductive wire extending to the base end 2b of the shaft 2 through the third lumen 6 of the multi-lumen tube 3x.
- the knife wire 15 is connected to the multi-lumen tube 3x by a knife fixing portion 18 in the through-hole 6a on the tip 2a side of the two through-holes 6a, 6b arranged in the vicinity of the tip 3a of the multi-lumen tube 3x. That is, the tip of the knife wire 15 is fixed to the vicinity of the tip of the shaft 2 (knife support 14) by the knife fixing portion 18.
- the knife portion 16 is exposed to the outside of the multi-lumen tube 3x between the two through holes 6a and 6b arranged in the vicinity of the tip 3a of the multi-lumen tube 3x.
- the knife part 16 and the conductive wire part 17 are comprised by the knife wire 15 which consists of a continuous metal wire.
- the knife portion 16 refers to a portion that can be exposed to the outside of the multi-lumen tube 3x between the two through holes 6a and 6b disposed in the vicinity of the tip 3a of the multi-lumen tube 3x.
- the knife wire 15 is located at a position away from the center of the shaft 2 (position of the longitudinal axis L1) in a cross section orthogonal to the longitudinal axis L1 of the shaft 2. It is arranged.
- the tip region of the shaft 2 including the through hole 6a on the tip side can be actively bent by pulling the knife wire 15 to the operation unit side.
- the tip region curved by pulling the knife wire 15 toward the operation portion side substantially coincides with the position where the knife portion 16 is exposed from the shaft 2 in a front view from the direction along the longitudinal axis L1 of the shaft 2.
- the distal end side index 11 and the proximal end side index 12 substantially coincide with the position where the knife portion 16 is exposed from the shaft 2.
- the operation unit 20 includes a main body 21 and a slider 26.
- the main body portion 21 includes a guide wire port 22, a liquid feeding port 23, and a shaft portion 24.
- the guide wire port 22 communicates with the first lumen 4 of the shaft 2.
- the liquid feeding port 23 communicates with the second lumen 5 of the shaft 2.
- the shaft portion 24 has a rod shape and has a finger ring 25 at the end.
- the slider 26 is coupled to the shaft portion 24 so as to be able to advance and retract relative to the shaft portion 24.
- the slider 26 has a finger ring 27 and a plug 28.
- the plug 28 provided on the slider 26 is connected to the base end 15b of the knife wire 15 (base end 17b of the conductive wire portion 17). For this reason, the plug 28 is connected to a high frequency power supply device (not shown), so that a high frequency current can be applied to the knife portion 16 through the conductive wire portion 17.
- An endoscope 100 used with the endoscope treatment tool 1 is a so-called side-view type flexible endoscope as shown in FIG.
- the endoscope 100 includes a long insertion body 101 and an operation body 104 disposed at an end of the insertion body 101.
- a side-view-type imaging unit 102 having a visual field center oriented in a direction intersecting the center line of the insertion body 101 is disposed.
- a distal end opening 103a of a treatment instrument channel 103 through which the shaft 2 of the endoscope treatment instrument 1 is inserted is disposed at the distal end 101a of the insertion body 101.
- the operation body 104 includes a knob 105 and the like for controlling the bending operation of the insertion body 101, and a proximal end opening 103 b of the treatment instrument channel 103.
- FIG. 6 is a schematic view showing the endoscopic treatment tool reflected in the endoscopic image in a state where the endoscopic treatment tool is inserted into the bile duct through the duodenal papilla.
- FIG. 7 is a schematic diagram showing the endoscope treatment tool in a state where it is inserted into the bile duct through the duodenal papilla.
- an operator inserts the endoscope 100 from the mouth, and the distal end 101a of the insert 101 of the endoscope 100 reaches the vicinity of the duodenal papilla (indicated by symbol P in the figure). Guide (see FIG. 7).
- an operator inserts the shaft 2 of the endoscope treatment tool 1 into the treatment tool channel 103 of the endoscope 100 and the distal end of the treatment tool channel 103.
- the tip 2a of the shaft 2 is protruded from the opening 103a, and the tip 2a of the shaft 2 is inserted into the duodenal papilla.
- the operator can observe the shaft 2 entering the bile duct and pancreatic duct through the duodenal papilla with an X-ray image.
- the surgeon can observe the traveling of the shaft 2 as shown in FIG. 7 by an X-ray image.
- a member that does not transmit X-rays for example, a metal knife wire 15
- the shaft 2 is made of a material that does not transmit X-rays, the position and orientation of the shaft 2 can be grasped by checking the X-ray image.
- the shaft 2 when the shaft 2 is rotated about the longitudinal axis L1 of the shaft 2, it is difficult to grasp how much the tip 2a of the shaft 2 is rotated even if an X-ray image is confirmed. . Further, when the shaft 2 protruding from the proximal end opening 103b disposed on the operation body 104 of the endoscope 100 is rotated, the shaft 2 is rotated because the shaft 2 has flexibility. The operation amount does not match the operation amount by which the tip 2a of the shaft 2 rotates. Of the entire length of the shaft 2, the region from the base end 2b of the shaft 2 to the base end 8b of the blade 8 is long, so that the operation amount for rotating the shaft 2 and the operation amount for rotating the tip end 2a of the shaft 2 The shift is large.
- the region from the base end 8 b of the blade 8 to the tip end 2 a of the shaft 2 is shorter than the region from the base end 2 b of the shaft 2 to the base end 8 b of the blade 8, and rotation followability is enhanced by the blade 8. Therefore, the deviation between the operation amount for rotating the shaft 2 and the operation amount for rotating the tip 2a of the shaft 2 is small.
- the orientation of the distal end 2a of the shaft is determined by X-ray using the imaging unit 102 of the endoscope 100. Even when the image cannot be grasped, the rotational position of the distal end 2 a of the shaft 2 can be easily estimated based on the positions of the distal end side index 11 and the proximal end side index 12.
- FIG. 8 is a schematic diagram showing the endoscopic treatment tool reflected in the endoscopic image in a state where the distal end of the shaft of the endoscopic treatment tool reaches the branch portion between the common bile duct and the gallbladder duct. is there.
- FIG. 9 is a schematic diagram showing the endoscope treatment tool in a state where the distal end of the shaft of the endoscope treatment tool reaches a branch portion between the common bile duct and the gallbladder duct.
- FIG. 10 is a schematic diagram showing the endoscopic treatment tool reflected in the endoscopic image in a state where the distal end of the sheath of the endoscopic treatment tool is rotated at a branch portion between the common bile duct and the gallbladder duct. It is.
- FIG. 11 is a schematic view showing the endoscope treatment tool in a state where the distal end of the sheath of the endoscope treatment tool is rotated at a branch portion between the common bile duct and the gallbladder
- the shaft 2 When the shaft 2 is inserted into the intrahepatic bile duct through the common bile duct after the distal end 2a of the shaft 2 reaches the branch portion between the common bile duct and the gallbladder duct as shown in FIG. 9, and when the shaft 2 is inserted into the gallbladder duct There is. If the shaft 2 is pushed into the pipe as it is, depending on the meandering state of the shaft 2 in the pipe, the branched pipe may be inserted into a pipe different from the pipe where the shaft 2 is to be inserted. In such a case, the operator needs to turn the shaft 2 so that the tip 2a of the shaft 2 is directed to the tube to be inserted (the intrahepatic bile duct side or the gallbladder side).
- the direction of the tip 2a of the shaft 2 can be changed as shown in FIG. Thereby, the surgeon can orient the tip 2a of the shaft 2 in the direction of the tube into which the tip 2a of the shaft 2 is to be inserted.
- the distal-side index 11 protrudes from the nipple into the duodenum.
- the nipple and its vicinity can be captured in the observation field by the imaging unit 102.
- the surgeon uses the endoscopic image to check the position of the distal end side index 11, more specifically, the distal end side first index 11x and the distal end side second index 11y in the circumferential direction. 2 can be grasped.
- FIG. 12 is a schematic diagram showing the endoscopic treatment tool reflected in the endoscopic image in a state where the distal end of the sheath of the endoscopic treatment tool reaches the bifurcation portion of the intrahepatic bile duct.
- FIG. 13 is a schematic diagram showing the endoscope treatment tool in a state where the distal end of the sheath of the endoscope treatment tool has reached the bifurcation portion of the intrahepatic bile duct.
- FIG. 14 is a schematic diagram showing the endoscopic treatment tool reflected in the endoscopic image in a state where the distal end of the sheath of the endoscopic treatment tool is rotated at the bifurcation portion of the intrahepatic bile duct.
- FIG. 15 is a schematic diagram showing the endoscope treatment tool in a state in which the distal end of the sheath of the endoscope treatment tool is rotated at a branch portion of the intrahepatic bile duct.
- the distal end 2a of the shaft 2 When the distal end 2a of the shaft 2 is moved toward the intrahepatic bile duct, the distal end 2a of the shaft 2 reaches a branch portion in the intrahepatic bile duct. As shown in FIG. 13, after the distal end 2a of the shaft 2 reaches the branch portion between the right and left hepatic ducts, the shaft 2 is inserted into the right hepatic duct and the shaft 2 is inserted into the left hepatic duct. There is. If the shaft 2 is pushed into the pipe as it is, depending on the meandering state of the shaft 2 in the pipe, the branched pipe may be inserted into a pipe different from the pipe where the shaft 2 is to be inserted.
- the surgeon needs to turn the shaft 2 so that the tip 2a of the shaft 2 is directed to the tube to be inserted (right liver tube side or left liver tube side).
- the direction of the tip 2a of the shaft 2 can be changed as shown in FIG. Thereby, the surgeon can point the front end 2a of the shaft 2 in the direction of the tube into which the front end 2a of the shaft 2 is to be inserted.
- the proximal index 12 projects from the nipple into the duodenum. Therefore, it can be captured within the observation field by the imaging unit 102. For this reason, the surgeon uses the endoscopic image to confirm the positions of the proximal index 12, specifically the proximal first index 12 x and the proximal second index 12 y in the circumferential direction. Thus, the rotation state of the shaft 2 can be grasped.
- the region where the distal end side index 11 and the proximal end index 12 are arranged is Excellent rotation followability. For this reason, there is little deviation between the amount of rotation of the tip side index 11 and the amount of rotation of the tip 2 a of the shaft 2. Further, there is little deviation between the rotational movement amount of the proximal end index 12 and the rotational movement amount of the distal end 2a of the shaft 2. That is, the rotation amounts of the distal end side index 11 and the proximal end side index 12 can be regarded as the rotation amount of the distal end 2 a of the shaft 2.
- the surgeon observes how much the distal-side index 11 and the proximal-side index 12 are rotated with respect to the operation of rotating the shaft 2 by using an endoscopic image, so that the distal end 2a of the shaft 2 is observed. It is possible to accurately estimate how much has been rotated.
- the position and orientation of the shaft 2 can be estimated with higher accuracy if used together with confirmation by X-ray images.
- a pre-curve portion 7 having a predetermined curved shape is provided in the vicinity of the distal end 3a of the lumen tube 3, as shown in FIG. Further, when the treatment portion 13 is provided on the distal end side of the shaft 2 and the operation portion 20 is provided on the proximal end side of the shaft 2, the same effect as described above can be obtained.
- each index is associated with the shape of the pre-curve portion 7.
- the posture of the endoscope treatment tool 1 inserted into the bile duct or pancreatic duct can be easily grasped using the endoscope image.
- the rotation operation of the shaft 2 can be minimized.
- the endoscope 2 is viewed in the state where the shaft 2 is inserted into the bile duct or pancreatic duct through the duodenal papilla.
- the operator can easily grasp the direction of the distal end 2a of the shaft 2.
- the posture of the endoscope treatment tool 1 inserted into a bile duct or pancreatic duct can be easily grasped using an endoscope image. can do.
- the distal end side indicator 11 and the proximal end side indicator 12 disclosed in the above embodiment may be discontinuous in the longitudinal axis direction of the shaft 2.
- the distal end side indicator 11 and the proximal end side indicator 12 may be configured by a dot pattern arranged with a space in the direction along the longitudinal axis L1 of the shaft 2.
- the dot pattern may be equally spaced or may not be equally spaced.
- the tip side first index 11x and the tip side second index 11y have a width corresponding to a half circumference in the circumferential direction of the shaft 2, they are adjacent to each other.
- One of the first indicator 11x and the tip-side second indicator 11y (tip-side first indicator 11x in FIG. 18) is colored in a color different from the material of the shaft 2, and the other (tip-side second indicator in FIG. 18).
- the index 11y) may be the material of the shaft 2 itself (the color of the covering member 9 in FIG. 18). That is, the colored portion on the outer peripheral surface of the shaft 2 is the front end side first indicator 11x, and the uncolored portion is the front end side second indicator 11y.
- the base end side first index 12x and the base end side second index 12y may have the same configuration.
- the front end side indicator 11 and the proximal end side indicator 12 disclosed in the above embodiment may be configured by a X-ray opaque paint.
- the distal-side index and the proximal heel index can be confirmed on the X-ray image, and the twisted state of the sheath inside the bile duct and pancreatic duct can be easily grasped.
- FIG. 20 is a side cross-sectional view schematically showing the endoscope treatment tool of the present embodiment.
- FIG. 21 is a sectional view taken along section line A7-A7 in FIG. 22 is a cross-sectional view taken along section line A8-A8 in FIG.
- FIG. 23 is a cross-sectional view taken along line A9-A9 in FIG. FIG.
- FIG. 24 is an exploded perspective view of a multi-lumen tube and a torque transmission member used in the endoscope treatment tool.
- FIG. 25 is a perspective view showing a state in which a torque transmission member is attached to the multi-lumen tube.
- FIG. 26 is a diagram for explaining a procedure using the endoscope treatment tool.
- the endoscope treatment tool 60 is provided at the shaft 90, the treatment portion 113 provided on the distal side of the shaft 90, and the proximal end portion of the shaft 90. And an operation unit 120 for operating the treatment unit 113.
- the shaft 90 in this embodiment uses a multi-lumen tube (long shaft member) 91 as shown in FIGS. 24 and 25, the covered tube 111 is not shown in the torque transmission member 95 described later.
- the multi-lumen tube 91 has a larger outer diameter on the base end side than the outer diameter on the front end side, and a transition portion 91a is formed at the boundary between the front end side and the base end side. ing.
- the multi-lumen tube 91 is formed with at least the three lumens 116, 117, 118 described above over the entire length.
- the multi-lumen tube 91 is formed with a torque lumen (lumen) 92 from the base end to the transition portion 91a.
- the proximal end side of the intermediate portion between the distal end of the multi-lumen tube 91 and the transition portion 91a is the tube main body 91b, and the distal end side of the tube main body 91b is the knife support portion 91c.
- the guide wire lumen 116 of the tube main body 91b is formed with a narrow notch 91d that reaches the outer peripheral surface of the tube main body 91b.
- the narrow notch 91d is formed over substantially the entire length of a shaft region R2, which will be described later, on the base end side with respect to the transition portion 91a.
- the width of the narrow notch 91d is slightly smaller than the outer diameter of the guide wire W (see FIG.
- a wide notch 91e having a width larger than the outer diameter of the guide wire W to be combined with the endoscope treatment tool 60 is formed at the proximal end of the narrow notch 91d.
- the wide cutout 91e and the narrow cutout 91d constitute a cutout 91f.
- the shaft 90 includes the above-described tube main body 91b and a torque transmission member 95 provided on the tube main body 91b.
- the torque transmission member 95 covers the blade 109, a metal cylindrical blade 109, a wire 110 whose tip is fixed to the outer peripheral surface of the blade 109, and the blade 109. And a covering tube 111.
- the wire 110 is configured by arranging a plurality of strands 110a parallel to the axis C1 and fixing only the front end and the rear end to each other by welding or the like.
- the strand 110a can be formed of, for example, a stainless steel wire or a nickel titanium alloy.
- Some of the plurality of strands 110a are extended to the distal end side, and are fixed to the outer peripheral surface of the base end portion of the blade 109 by welding as shown in FIGS. That is, the blade 109 and the wire 110 are fixed by the welded portion (joined portion) 115.
- the welded portion 115 is sandwiched between the base end portion of the blade 109 and the base end portion of the covering tube 111.
- the wire 110 may be formed of one thick nickel titanium alloy.
- a grip (rotary torque input portion) 107 having a diameter larger than that of the wire 110 is fixed to the proximal end portion of the wire 110.
- the operation unit 120 can adjust the exposure amount of the knife portion 19 a exposed to the outside of the multi-lumen tube 91 between the two through holes arranged in the vicinity of the tip of the multi-lumen tube 91.
- an opening 122 is formed at the base end of the operation unit main body 121 of the operation unit 120, and the torque lumen 92 is formed to communicate with the opening of the base end of the operation unit main body 121.
- the grip 107 is provided so as to protrude from the opening 122 and is configured to be able to input rotational torque to the wire 110.
- the configurations of the blade 109 and the covering tube 111 are the same as those of the blade 8 and the covering member 9 in the first embodiment described above.
- the knife supporting portion 91c, the blade 109, and the covering tube 111 are fixed with a flexible adhesive so that the rotational torque can be easily transmitted even in the bent endoscope channel, or the original inner diameter is the blade.
- the cover tube 111 is configured by a contraction tube smaller than the outer diameter of 109, and the blade 109 is configured to be in close contact with the contraction force of the cover tube 111 so as to be easily bent.
- the distal end side of the shaft 90 is a shaft region R1 in which the blade 109 and the covering tube 111 are attached to the outside of the outer peripheral surface of the knife support portion 91c.
- the wire 110 is not attached to the outside of the outer peripheral surface of the tube main body 91b, and the wire 110 is rotatably disposed in the torque lumen 92 of the tube main body 91b.
- the proximal end side of the shaft 90 is a shaft region R2.
- the portion corresponding to the shaft region R2 of the multi-lumen tube 91 is formed of a material that has a smaller rotational torque transmission force than the torque transmission member 95, in other words, is easily twisted.
- the shaft 90 When the shaft 90 is inserted into the nipple in a state where the nipple is captured in the observation field of view by the imaging unit of the endoscope 100, the shaft 90 needs to be largely curved with a small curvature radius by the raising base 106 of the endoscope 100. . At this time, the shaft 90 curved by the elevator 106 is greatly curved with a smaller radius of curvature than the channel 51 curved by the insertion body 101 of the endoscope 100 being curved.
- the material and shape of the wire 110 can be set so that the torque transmission property of the wire 110 is improved, but if so, flexibility is reduced.
- the welded part 115 is in the channel 51, and the base of the elevator 106. It is set so as to be located on the base end side with respect to the end 106a. That is, the distal end of the wire 110 is set to be located closer to the proximal end side than the proximal end 61-1 of the elevator 106 in the channel 51, and the region between the distal end and the proximal end of the blade 109 is It is raised by the raising stand 106.
- the shaft region R2 is set so as to be located on the base end side of the base end 61-1 of the elevator base 106. Therefore, it is not necessary to cancel the raising of the raising base 106, and the torque transmission to the blade 109 is maintained while maintaining the state where the proximal index 12 is captured in the observation visual field range of the imaging unit of the endoscope 100. it can.
- the treatment unit 113 has the same configuration as the treatment unit 13 described in the first embodiment.
- the distal end side index 11 and the proximal end side index 12 are arranged on the outer peripheral surface of the blade 109 as shown in FIG. Details of the distal end side index 11 and the proximal end side index 12 are the same as the distal end side index 11 and the proximal end side index 12 described in the first embodiment, respectively, and thus description thereof is omitted.
- the endoscope treatment tool 60 configured in this way constitutes an endoscope system 207 in combination with the endoscope 100 as shown in FIG.
- the guide wire W is inserted into the channel 51 through the through hole 73 a of the forceps plug 73 of the endoscope 100.
- the portion of the shaft 90 in which the narrow notch 91 d is formed is inserted into the forceps plug 73 so that the wide notch 91 e is positioned on the proximal side of the forceps plug 73.
- This guide wire W is introduced into the bile duct P2 through the duodenum P0.
- the proximal end portion of the guide wire W is inserted into the distal end of the guide wire lumen 116 of the endoscope treatment instrument 60, and the guide wire W is pulled out from the wide notch 91e of the shaft 90 to the outside.
- the shaft 90 of the endoscope treatment tool 60 is inserted into the channel 51 through the through hole 73 a of the forceps plug 73.
- a frictional force acts between the valve of the forceps plug 73 and the outer peripheral surface of the shaft 90, and the forceps plug 73 and the shaft 90 are sealed in a substantially watertight manner.
- the user adjusts the insertion amount of the shaft 90 to be inserted into the channel 51 of the endoscope 100 to bring the endoscopic treatment tool 60 into an orientation adjustment state in which the treatment portion 113 protrudes from the channel 51.
- the forceps plug 73 is inserted with the shaft 90 of the shaft region R2, that is, the tube body 91b.
- the frictional force acts between the forceps plug 73 and the outer peripheral surface of the tube body 91b in the shaft region R2.
- the rotational torque is transmitted to the blade 109 and the covering tube 111 via the wire 110 inserted through the torque lumen 92 of the tube main body 91b and transmitted to the shaft region R1.
- the rotational torque is transmitted from the shaft region R1 to the shaft region R2.
- the multi-lumen tube 91 is made of a material having a lower rotational torque transmission force than the torque transmission member 95 and easily twisted, the rotational torque applied to the tip of the shaft region R2 is absorbed by the multi-lumen tube 91 being twisted.
- the rotational torque is not transmitted to the operation unit main body 121, and it is not necessary to rotate the operation unit main body 121 around the axis C1 at hand. Further, since the wire 110 is inserted through the torque lumen 92, the rotational torque transmitted from the grip 107 is suppressed from being affected by the frictional force by the forceps plug 73.
- a notch 91f is formed in the guide wire lumen 116 of the tube main body 91b in the shaft region R2. For this reason, it is possible to easily perform the procedure of drawing the guide wire W inserted through the guide wire lumen 116 to the outside from the notch 91f and inserting the shaft 90 along the guide wire W.
- the narrow notch 91d is made with a width slightly smaller than the outer diameter of the guide wire W. Since the multi-lumen tube 91 is made of a resin material, it can be elastically deformed, and by elastically deforming the multi-lumen tube 91, the guide wire W can be pulled out from the narrow notch 91d. Further, when the procedure is started only with the endoscope treatment tool 60 and the guide wire W is to be inserted from the guide wire lumen on the way, the narrow notch 91d is smaller than the outer diameter of the guide wire W. However, the guide wire W can be inserted up to the distal end of the endoscope treatment tool 60 without going out in the middle of the narrow notch 91d.
- a pre-curve portion may be provided as in the first embodiment.
- the blade 8 is positioned on the proximal end 3 b side with respect to the proximal end of the pre-curved portion 7 and is fixed to the distal end of the wire 110 and the multi-lumen tube 91. Yes.
- the present invention can be used for a treatment instrument introduced into the body using an endoscope.
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Abstract
Description
本発明は、胆管や膵管等に挿入された内視鏡用処置具の姿勢を内視鏡画像を用いて容易に把握することができる内視鏡用処置具を提供することを目的とする。
本発明の第1実施形態について説明する。図1は、本実施形態の内視鏡用処置具(胆管挿入用のカテーテルを含む)が内視鏡の処置具チャンネルに挿入された状態を示す全体図である。図2は、内視鏡用処置具の側面視における部分断面図である。図3は、図2のA1-A1線における断面図である。図4は、内視鏡用処置具のプリカーブ部が湾曲状態にあるときの側面視における部分断面図である。図5は、図4のA2-A2線における断面図である。
図2及び図3に示すように、シャフト2は、ルーメンチューブ3と、ブレード8とを有している。
第一ルーメン4は、医療用ガイドワイヤ(不図示)を挿入するためのルーメンである。
第二ルーメン5は、造影剤等の液体をシャフト2の基端2bから先端2aへ送液するためのルーメンである。
第三ルーメン6は、ガイドワイヤの挿入用および造影剤等の液体の送液以外で、処置部を挿通可能なルーメンとして使用されて良い。
ブレード8は、例えば、複数の細いステンレス鋼からなる線材の束を格子状に編んで管状に形成したものである。また、ブレード8は、これに限らず、ステンレス線やステンレスの帯等の線材を1条または多条のコイル状に巻いて管状にしたり、1条または多条のコイルを巻き方向を交互に違えながら多層に巻いて管状に形成したものでも良い。ブレード8は、ブレード8の基端8bにおけるシャフト2の回転に対してブレード8の先端8aにおけるシャフト2の回転が好適に追従するように、シャフト2を補強する。ブレード8は、シャフト2が可撓性を有することと、シャフト2に対する術者の回転操作によるシャフト2の先端2aの回転が好適に追従することとを、シャフト2の先端近傍の所定の領域において両立させる。本実施形態において、シャフト2の先端近傍の所定の領域とは、本実施形態の内視鏡用処置具1を用いた手技において胆管又は膵管内に挿入されることが想定される領域を指す。
なお、先端側指標11と基端側指標12は、必ずしもブレード8の外周面の面上に配される必要はなく、例えば、被覆部材9の外周面9cに配されても良い。
本実施形態では、ブレード8の外周面の面上に配される先端側指標11と基端側指標12も、ブレード8の外周面を覆う被覆部材9の外周面9cに配される先端側指標11と基端側指標12も、ブレード8の外周面上に配されるものとして記載する。
また、先端側指標11として、塗料等による色付きマーカーを使用する場合は、ブレード8の外周面の色とは異なる配色である方が好ましく、例えば、ブレード8の外周面が灰色である場合、緑色や青色が好ましい。
本実施形態では、基端側指標12が、撮像部102による観察視野内に位置した状態において、ブレード8の基端8bが起上台106の基端106aよりもシャフト2の基端側に位置するように設定されている。すなわち、起上台106により湾曲される領域に、可撓性およびトルク伝達性に優れたブレード8が位置するように設定されている。
そのため、基端側指標12を内視鏡100の撮像部の観察視野範囲に捉えた状態を維持しながら、シャフト2の基端側から先端側へのトルク伝達性を維持できる。
また、基端側指標12として、塗料等による色付けされるマーカーを使用する場合は、ブレード8の外周面の色とは異なる配色である方が好ましく、例えば、ブレード8の外周面が灰色である場合、緑色や青色が好ましい。
より好ましくは、先端側指標11は、先端側第一指標11xおよび先端側第二指標11yを有しても良い。
また、基端側指標12も、基端側第一指標12xおよび基端側第二指標12yを有しても良い。
先端側第二指標11yおよび基端側第二指標12yも、先端側第一指標11xおよび基端側第一指標12xと同様に、シャフト2の長手軸L1に沿って延びている。先端側第二指標11yおよび基端側第二指標12yは、シャフト2の周方向においてシャフト2の外周の半周以下の領域に配されている。シャフト2の外周面に沿ってシャフト2の周方向に測ったときの先端側第二指標11yおよび基端側第二指標12yの幅は、何れもシャフト2の長手軸L1方向において一定の幅である方が好ましい。
また、先端側指標11は、ブレード8の先端8aの近傍、例えば、ブレード8の先端8aから僅かにシャフト2の基端2b側に離れた位置にあってもよい。
また、図4に示すように、例えば、シャフト2の外周面に沿ってシャフト2の周方向に測ったときの先端側指標11の幅は、シャフト2の外周面に沿ってシャフト2の周方向に測った時の基端側指標12の幅と等しくても良い。
なお、上記では、先端側第一指標11x及び先端側第二指標11yについて説明したが、基端側第一指標12x及び基端側第二指標12yについても同様である。すなわち、基端側第一指標12x及び基端側第二指標12yは、基端側第一指標12xと基端側第二指標12yとがシャフト2の周方向において隙間なく隣接していてもよい。色付きマーカーを使用する際は、基端側第一指標12xと基端側第二指標12yとの境界を内視鏡画像上で判別できる程度に基端側第一指標12xの色と基端側第二指標12yの色とが互いに異なっている。
なお、ルーメンチューブ3の先端3a近傍にプリカーブ部7が設けられている場合、図4に示すように、ブレード8の先端8aは、プリカーブ部7の基端7bよりも基端3b側に位置している。
この場合、前述の第三ルーメン6は、処置部13のナイフワイヤ15が挿通されたルーメンとして使用しても良い。
また、図2及び図3に示すように、第三ルーメン6の先端近傍には、シャフト2の長手軸L1方向に互いに離間する2つの貫通孔6a,6bが形成されている。2つの貫通孔6a,6bは、いずれも、第三ルーメン6に連通し、マルチルーメンチューブ3xの外周面に開口されている。2つの貫通孔6a,6bにはナイフワイヤ15が挿通されている。2つの貫通孔6a,6bのうちシャフト2の先端2a側の貫通孔6aは、シャフト2の先端2aよりもわずかに基端2b側に離れた位置にある。2つの貫通孔6a,6bのうちシャフト2の基端2b側の貫通孔6bは、ブレード8の先端8aよりもシャフト2の先端2a側に位置している。シャフト2の長手軸L1方向における2つの貫通孔6a,6bの距離は、例えば30mm程度であってよい。
2つの貫通孔6a,6bにおける前述した開口は、前述のプリカーブ部7の湾曲の内側(内周側)に向いている。
先端側指標11の先端11aは、シャフト2の長手軸L1方向において、例えば、マルチルーメンチューブ3xに形成された基端側の貫通孔6b近傍で、且つ、貫通孔6bよりも基端側に位置する。
マルチルーメンチューブ3xに形成された2つの貫通孔6a,6bの間では、シャフト2の長手軸L1と直交する断面においてシャフト2の中心(長手軸L1の位置)から離間した位置にナイフワイヤ15が配されている。先端側の貫通孔6aを含むシャフト2の先端領域は、ナイフワイヤ15を操作部側に牽引することで能動的に湾曲可能となる。
なお、ナイフワイヤ15を操作部側に牽引することで湾曲された先端領域は、シャフト2の長手軸L1に沿う方向からの正面視において、ナイフ部16がシャフト2から露出する位置と略一致している。また、シャフト2の長手軸L1に直交する面への投影面において、先端側指標11および基端側指標12は、ナイフ部16がシャフト2から露出する位置と略一致する。
本体部21は、ガイドワイヤポート22と、送液ポート23と、軸部24とを有している。
ガイドワイヤポート22は、シャフト2の第一ルーメン4に連通している。
送液ポート23は、シャフト2の第二ルーメン5に連通している。
軸部24は、棒状をなし、端部に指掛けリング25を有している。
スライダ26に設けられたプラグ28は、ナイフワイヤ15の基端15b(導電ワイヤ部17の基端17b)に接続されている。このため、プラグ28が高周波電源装置(不図示)に接続されることで、導電ワイヤ部17を通じてナイフ部16に高周波電流を通電させることができる。
内視鏡用処置具1とともに使用される内視鏡100は、図1に示すように、所謂側視型の軟性内視鏡である。たとえば、内視鏡100は、長尺の挿入体101と、挿入体101の端部に配された操作体104とを有している。
挿入体101の先端101aには、挿入体101の中心線に対して交差する方向へ視野中心が向けられた側視型の撮像部102が配されている。また、挿入体101の先端101aには、内視鏡用処置具1のシャフト2を挿通する処置具チャンネル103の先端開口部103aが配されている。
操作体104は、挿入体101の湾曲動作を制御するためのノブ等105と、処置具チャンネル103の基端開口部103bとを有する。
図6は、同内視鏡用処置具が十二指腸乳頭部を通じて胆管内へ挿入されている状態において、内視鏡画像に映った同内視鏡用処置具を示す模式図である。図7は、十二指腸乳頭部を通じて胆管内へ挿入されている状態における同内視鏡用処置具を示す模式図である。
内視鏡用処置具1の使用時には、術者(例えば執刀医)が、内視鏡100の処置具チャンネル103に内視鏡用処置具1のシャフト2を挿入し、処置具チャンネル103の先端開口部103aからシャフト2の先端2aを突出させて、シャフト2の先端2aを十二指腸乳頭部へと挿入する。
本実施形態の内視鏡用処置具1では、先端側指標11および基端側指標12が設けられているので、内視鏡100の撮像部102を用いてシャフトの先端2aの向きをX線画像で把握できない場合でも、先端側指標11及び基端側指標12の位置に基づいてシャフト2の先端2aの回転位置を容易に推測することができる。
図10に示すように、シャフト2を回転させると、図11に示すように、シャフト2の先端2aの向きを変えることができる。これにより、術者は、シャフト2の先端2aを挿入したい管の方向にシャフト2の先端2aを向けることができる。
図14に示すように、シャフト2を回転させると、図15に示すように、シャフト2の先端2aの向きが変えることができる。これにより、術者は、シャフト2の先端2aを挿入したい管の方向にシャフト2の先端2aを向けることができる。
また、プリカーブ部7の湾曲形状と先端側指標11および基端側指標12の位置とが関連付けられているので、シャフト2が十二指腸乳頭部を通じて胆管や膵管の内部に挿入された状態において、内視鏡画像上における先端側指標11および基端側指標12の位置及びX線画像上におけるシャフト2の走向とを考慮することにより、シャフト2の先端2a向きを術者が容易に把握可能である。
次に、本発明の第2実施形態について図20から図26を参照しながら説明するが、前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。図20は、本実施形態の内視鏡用処置具を模式的に示した側面の断面図である。図21は、図20中の切断線A7-A7の断面図である。図22は、図20中の切断線A8-A8の断面図である。図23は、図20中の切断線A9-A9の断面図である。図24は、同内視鏡用処置具に用いられるマルチルーメンチューブおよびトルク伝達部材を分解した斜視図である。図25は、同マルチルーメンチューブにトルク伝達部材を取付けた状態を示す斜視図である。図26は、同内視鏡用処置具を使用する手技を説明する図である。
マルチルーメンチューブ91は、図24に示すように、先端側の外径よりも基端側の外径の方が大きく、先端側と基端側との境となる部分に移行部91aが形成されている。マルチルーメンチューブ91には、図21から図23に示すように、全長にわたって、少なくとも前述の3つのルーメン116、117、118が形成されている。また、マルチルーメンチューブ91には、基端から移行部91aまでトルクルーメン(ルーメン)92が形成されている。
マルチルーメンチューブ91の先端と移行部91aとの中間部分よりも基端側がチューブ本体91bであり、チューブ本体91bよりも先端側がナイフ支持部91cである。図20および図22に示すように、チューブ本体91bのガイドワイヤルーメン116には、チューブ本体91bの外周面に達する幅狭切欠き91dが形成されている。幅狭切欠き91dは、移行部91aよりも基端側の後述するシャフト領域R2のほぼ全長にわたり形成されている。幅狭切欠き91dの幅は、内視鏡用処置具60と組み合わせて使用するガイドワイヤW(図26参照。)の外径よりわずかに小さく形成されている。また、幅狭切欠き91dの基端には、内視鏡用処置具60と組み合わせるガイドワイヤWの外径よりも大きな幅の幅広切欠き91eが形成されている。
この幅広切欠き91eおよび幅狭切欠き91dで、切欠き91fを構成する。
トルク伝達部材95は、図20、図24および図25に示すように、金属製の筒状のブレード109と、先端部がブレード109の外周面に固定されたワイヤ110と、ブレード109を被覆する被覆チューブ111とを有している。
ワイヤ110は、図21および図24に示すように、本実施形態では、複数の素線110aを軸線C1に平行に並べ、先端と後端のみを溶接などで互いに固定して構成している。素線110aは、例えばステンレス線やニッケルチタン合金で形成することができる。
複数の素線110aのうちの何本かは先端側に延ばされ、図20および図25に示すようにブレード109の基端部の外周面に溶接により固定されている。すなわち、ブレード109とワイヤ110とは溶接部(接合部)115により固定されている。溶接部115は、ブレード109の基端部と被覆チューブ111の基端部との間に挟まれている。また、ワイヤ110は、1本の太いニッケルチタン合金で形成しても良い。
操作部120は、マルチルーメンチューブ91の先端近傍に配された2つの貫通孔の間において、マルチルーメンチューブ91の外部に露出したナイフ部19aの露出量を調整できる。
操作部120の操作部本体121の基端には、図20に示すように、開口122が形成されており、トルクルーメン92は操作部本体121の基端の開口まで連通して形成されている。グリップ107は、開口122から突出して設けられており、ワイヤ110に回転トルクを入力することができるように構成されている。
マルチルーメンチューブ91のシャフト領域R2に対応する部分は、トルク伝達部材95よりも回転トルクの伝達力が小さい、言い換えるとねじれやすい材料で形成されている。
内視鏡100の撮像部による観察視野内に乳頭を捉えた状態で、乳頭にシャフト90を挿入する場合、内視鏡100の起上台106によりシャフト90を小さな曲率半径で大きく湾曲させる必要がある。このとき、起上台106により湾曲されたシャフト90は、内視鏡100の挿入体101が湾曲することによって湾曲されたチャンネル51よりも小さな曲率半径で大きく湾曲している。
ワイヤ110のトルク伝達性が高くなるように、ワイヤ110の材質や形状を設定できるが、そうすると、可撓性が低下してしまう。ワイヤ110の可撓性が低下した場合、起上された起上台106に沿わせてシャフト90(シャフト領域R2)を進退させ難くなる。そのような場合、起上台106の起上を一旦解除する必要があるが、起上台106の起上を解除すると、基端側指標12を内視鏡100の撮像部の観察視野範囲に捉えられなくなる。
そのため、起上台106の起上を解除する必要もなくなり、基端側指標12を内視鏡100の撮像部の観察視野範囲に捉えた状態を維持しながら、ブレード109へのトルク伝達性を維持できる。
内視鏡用処置具60を使用した手技は、ガイドワイヤWを内視鏡100の鉗子栓73の貫通孔73aを通してチャンネル51に挿通する。シャフト90における幅狭切欠き91dが形成された部分が鉗子栓73に挿通され、幅広切欠き91eが鉗子栓73よりも基端側に位置するようにする。このガイドワイヤWを、十二指腸P0を通して胆管P2内に導入しておく。
内視鏡用処置具60のガイドワイヤルーメン116の先端にガイドワイヤWの基端部を挿通し、ガイドワイヤWをシャフト90の幅広切欠き91eから外部に引出す。鉗子栓73の貫通孔73aを通してチャンネル51に、内視鏡用処置具60のシャフト90を挿入させる。鉗子栓73にシャフト90が挿通されると、鉗子栓73の弁とシャフト90の外周面との間に摩擦力が作用し、鉗子栓73とシャフト90とがほぼ水密に封止される。
使用者は、内視鏡100のチャンネル51に挿入するシャフト90の挿入量を調整入して、内視鏡用処置具60をチャンネル51から処置部113を突出させた向き調整状態にする。このとき、鉗子栓73にはシャフト領域R2のシャフト90、すなわち、チューブ本体91bが挿通されている。摩擦力は鉗子栓73とシャフト領域R2のチューブ本体91bの外周面との間に作用している。
また、ワイヤ110はトルクルーメン92に挿通されているため、グリップ107から伝達される回転トルクが鉗子栓73による摩擦力の影響を受けることが抑制される。
また、内視鏡用処置具60だけで手技を開始し、途中でガイドワイヤWをガイドワイヤルーメンから挿入したいときも、幅狭切欠き91dはガイドワイヤWの外径より小さいため、ガイドワイヤWが幅狭切欠き91dの途中で外に出てしまうということがなく、内視鏡用処置具60の先端までガイドワイヤWを挿入することができる。
さらに、本実施形態においても、第一実施形態と同様に、プリカーブ部を設けてもよい。
マルチルーメンチューブ91の先端近傍にプリカーブ部が設けた場合、ブレード8は、プリカーブ部7の基端よりも基端3b側に位置し、且つ、ワイヤ110の先端とマルチルーメンチューブ91に固定されている。
2 シャフト
3 ルーメンチューブ
3x マルチルーメンチューブ
4 第一ルーメン
5 第二ルーメン
6 第三ルーメン
7 プリカーブ部
8 ブレード
9 被覆部材
11 先端側指標
12 基端側指標
13 処置部
14 ナイフ支持部
15 ナイフワイヤ
16 ナイフ部
17 導電ワイヤ部
18 ナイフ固定部
20 操作部
21 本体部
22 ガイドワイヤポート
23 送液ポート
24 軸部
25 指掛けリング
26 スライダ
27 指掛けリング
28 プラグ
51 チャンネル
60 内視鏡用処置具
73 鉗子栓
90 シャフト
91 マルチルーメンチューブ(長軸部材)
92 トルクルーメン
95 トルク伝達部材
100 内視鏡
101 挿入体
102 撮像部
103 処置具チャンネル
104 操作体
105 ノブ
106 起上台
107 グリップ(回転トルク入力部)
109 ブレード
110 ワイヤ
111 被覆チューブ
113 処置部
115 溶接部(接合部)
116、117、118 ルーメン
120 操作部
121 操作部本体
122 開口
207 内視鏡システム
Claims (7)
- 処置具挿通用チャンネル、該チャンネルに挿通される処置具を起上させる起上台、および観察光学系を有する内視鏡と共に使用される内視鏡用処置具において、
先端と基端を有し、長手軸に沿ってルーメンを有する長軸部材と、
前記長軸部材の先端と基端との間に設けられたブレードと、
前記ブレード上に配置された先端側指標と、
前記ブレード上に前記先端側指標よりも前記長軸部材の基端側に配置された基端側指標と、を有し、
前記長軸部材を前記起上台により起上させた状態において、
前記長軸部材の先端が総胆管と胆嚢管との分岐部分に位置するときに、前記先端側指標は、前記観察光学系による観察視野内に位置し、
前記長軸部材の先端が右肝管と左肝管との分岐部分に位置するときに、前記基端側指標は、前記観察光学系による観察視野内に位置する
内視鏡用処置具。 - 前記先端側指標は、前記長軸部材の先端から5cmの位置と前記長軸部材の先端から10cmの位置との間に配置され、
前記基端側指標は、前記長軸部材の先端から10cmの位置と前記長軸部材の先端から15cmの位置との間に配置されている、請求項1に記載の内視鏡用処置具。 - 前記基端側指標は、前記観察光学系による観察視野内に位置した状態において、
前記ブレードの基端が前記起上台の基端よりも前記長軸部材の基端側に位置するように設定されている、請求項1に記載の内視鏡用処置具。 - 前記長軸部材は、前記先端側指標の先端と前記長軸部材の先端との間に配され、前記長軸部材の前記長手軸が湾曲する湾曲形状を有し前記湾曲形状への復元力を有するプリカーブ部を備え、
前記先端側指標の先端は、前記長軸部材の前記長手軸方向における前記プリカーブ部の基端近傍に配されている、請求項1に記載の内視鏡用処置具。 - 先端、基端を有し、長手軸に沿ってルーメンを有する長軸部材と、
前記長軸部材に対して回動自在に前記長軸部材の前記長手軸に沿って前記ルーメン内に設けられたワイヤと、
前記長軸部材の先端部に設けられ、前記長軸部材の前記長手軸が湾曲する湾曲形状への復元力を有するプリカーブ部と、
前記プリカーブ部の基端よりも前記長軸部材の基端側に位置し、前記ワイヤの先端と前記長軸部材に固定されたブレードと、
前記ブレードの外周面に配された基端側指標と、
前記基端側指標よりも前記長軸部材の先端側において前記ブレードの外周面に配された先端側指標と、
を備える内視鏡用処置具。 - 前記プリカーブ部の先端部に設けられた処置部と、
前記長軸部材の基端部に設けられ、前記処置部を操作する操作部と、
前記操作部に形成された開口から突出され、前記ワイヤに回転トルクを入力する回転トルク入力部と、
を有する請求項5記載の内視鏡用処置具。 - 処置具挿通用チャンネル、該チャンネルに挿通される処置具を起上させる起上台、および観察光学系を有する内視鏡と共に使用される請求項5記載の内視鏡用処置具において、
前記ワイヤの先端と前記ブレードとを接合する接合部を有し、
前記基端側指標が前記観察光学系による観察視野内に位置した状態において、前記接合部が前記起上台の基端よりも前記シャフトの基端側に位置するように設定されている、
内視鏡用処置具。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16899423.4A EP3446647B1 (en) | 2016-04-21 | 2016-04-21 | Endoscopic treatment tool |
| JP2017537322A JP6275347B1 (ja) | 2016-04-21 | 2016-04-21 | 内視鏡用処置具 |
| PCT/JP2016/062617 WO2017183151A1 (ja) | 2016-04-21 | 2016-04-21 | 内視鏡用処置具 |
| CN201680084694.9A CN109069175B (zh) | 2016-04-21 | 2016-04-21 | 内窥镜用处置器具 |
| US16/157,871 US11559370B2 (en) | 2016-04-21 | 2018-10-11 | Endoscopic treatment tool |
| US18/084,008 US20230122303A1 (en) | 2016-04-21 | 2022-12-19 | Endoscopic treatment tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/062617 WO2017183151A1 (ja) | 2016-04-21 | 2016-04-21 | 内視鏡用処置具 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US16/157,871 Continuation US11559370B2 (en) | 2016-04-21 | 2018-10-11 | Endoscopic treatment tool |
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| Publication Number | Publication Date |
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| WO2017183151A1 true WO2017183151A1 (ja) | 2017-10-26 |
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| PCT/JP2016/062617 Ceased WO2017183151A1 (ja) | 2016-04-21 | 2016-04-21 | 内視鏡用処置具 |
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| Country | Link |
|---|---|
| US (2) | US11559370B2 (ja) |
| EP (1) | EP3446647B1 (ja) |
| JP (1) | JP6275347B1 (ja) |
| CN (1) | CN109069175B (ja) |
| WO (1) | WO2017183151A1 (ja) |
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| US9986893B2 (en) | 2009-12-15 | 2018-06-05 | Cornell University | Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same |
| US11986150B2 (en) | 2009-12-15 | 2024-05-21 | Lumendi Ltd. | Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same |
| JP6856759B2 (ja) | 2017-09-06 | 2021-04-14 | オリンパス株式会社 | 高周波処置具および内視鏡システム |
| US20210361272A1 (en) * | 2020-05-22 | 2021-11-25 | Lumendi Ltd. | Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same |
| JP7766052B2 (ja) * | 2020-06-11 | 2025-11-07 | ボストン サイエンティフィック メディカル デバイス リミテッド | 医療システム、機器、及び関連する方法 |
| US12053195B2 (en) * | 2020-09-18 | 2024-08-06 | Olympus Medical Systems Corp. | Method and device of inserting treatment device into hollow organ |
| CN116916838A (zh) * | 2021-03-02 | 2023-10-20 | 奥林巴斯医疗株式会社 | 处置器件及进入胆管的进入路径形成方法 |
| CN119908638B (zh) * | 2025-04-01 | 2026-02-13 | 湖南省华芯医疗器械有限公司 | 一种管鞘及内窥镜系统 |
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- 2016-04-21 JP JP2017537322A patent/JP6275347B1/ja active Active
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2018
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3446647B1 (en) | 2022-08-31 |
| CN109069175A (zh) | 2018-12-21 |
| EP3446647A1 (en) | 2019-02-27 |
| US11559370B2 (en) | 2023-01-24 |
| US20190038376A1 (en) | 2019-02-07 |
| JP6275347B1 (ja) | 2018-02-07 |
| US20230122303A1 (en) | 2023-04-20 |
| CN109069175B (zh) | 2021-09-03 |
| JPWO2017183151A1 (ja) | 2018-04-26 |
| EP3446647A4 (en) | 2019-11-27 |
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