WO2007034708A1 - 内視鏡用処置具 - Google Patents
内視鏡用処置具 Download PDFInfo
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- WO2007034708A1 WO2007034708A1 PCT/JP2006/318032 JP2006318032W WO2007034708A1 WO 2007034708 A1 WO2007034708 A1 WO 2007034708A1 JP 2006318032 W JP2006318032 W JP 2006318032W WO 2007034708 A1 WO2007034708 A1 WO 2007034708A1
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- treatment
- endoscope
- treatment tool
- valley
- cutting means
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- A—HUMAN NECESSITIES
- 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
-
- A—HUMAN NECESSITIES
- 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
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- 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
-
- A—HUMAN NECESSITIES
- 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
- A61B18/149—Probes or electrodes therefor bow shaped or with rotatable body at cantilever end, e.g. for resectoscopes, or coagulating rollers
-
- A—HUMAN NECESSITIES
- 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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
-
- A—HUMAN NECESSITIES
- 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
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00269—Type of minimally invasive operation endoscopic mucosal resection EMR
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320071—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with articulating means for working tip
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- A—HUMAN NECESSITIES
- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00482—Digestive system
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- A—HUMAN NECESSITIES
- 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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00601—Cutting
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- A—HUMAN NECESSITIES
- 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
- A61B18/1206—Generators therefor
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/126—Generators therefor characterised by the output polarity bipolar
-
- A—HUMAN NECESSITIES
- 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
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1422—Hook
-
- A—HUMAN NECESSITIES
- 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
- A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
-
- 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
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
Definitions
- the present invention relates to a treatment tool for endoscope, and in particular to a treatment tool for endoscope used in endoscopic submucosal dissection (ESD).
- ESD endoscopic submucosal dissection
- Endoscopic mucosal resection is recognized as useful as a minimally invasive and reliable treatment as a radical treatment for neoplastic mucosal lesions such as early gastric cancer and early colorectal cancer.
- ESD endoscopic submucosal dissection
- a mucous membrane surrounding the tumor is dissected, and then the submucosal layer between the mucous membrane and the intrinsic muscle layer is cut to collectively remove the tumor mucous membrane.
- the treatment tool for endoscope described in Patent Document 1 is a hook knife in which the high-frequency electrode at the tip is formed by a bent bar, and the tip of the hook knife is hooked on mucosal tissue and pulled into a sheet. Mucosal tissue is resected.
- the treatment tool for endoscope described in Patent Document 2 is an IT knife in which an insulator is attached to the tip of a needle-shaped scalpel, and the insulator prevents piercing of the intrinsic muscle layer. Attempts have been made to eliminate any technical difficulty of endoscopic submucosal dissection by using these endoscopic treatment tools.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-27751
- Patent Document 2 JP-A-8-299355
- the endoscope treatment tool of Patent Document 1 While the force is applied, the endoscope treatment tool of Patent Document 1 is fixed by the angle and posture of the distal end. There is a risk that the striated layer may be damaged, and the operation is difficult.
- the treatment tool for endoscope of Patent Document 2 has a problem that it requires a skilled technique because treatment is performed outside the range of the observation image of the endoscope.
- the conventional endoscope treatment tool has a problem that it is difficult to perform treatment promptly and safely, which makes operation difficult when performing endoscopic submucosal layer dissection.
- the conventional endoscope treatment tool has a problem that it is difficult to cut the submucosal layer quickly and safely (exfoliation).
- the present invention has been made in view of such circumstances, and an object thereof is to provide a treatment tool for endoscope suitable for endoscopic submucosal dissection.
- a treatment tool for endoscope provided with a treatment section having a cutting means at the tip of an insertion section to be inserted into the body.
- a peak portion and a valley portion are provided on the front end side and the base end side, and the cutting means is provided on the valley portion.
- a treatment tool for endoscope provided with a treatment section having cutting means at the tip of an insertion section to be inserted into the body.
- a plurality of radially arranged plate-like bodies, the outer peripheral portion of the distal end side and the proximal end side of the plate-like body being protruded to form a peak portion, thereby forming a valley portion in the central portion
- the cutting means is provided in the valley.
- the treatment section A gear-like shape having peak portions and valley portions alternately, and the cutting means is provided in the valley portions.
- the inventor of the present invention has noted that the physical properties of the mucous membrane and the intrinsic muscle layer and the submucosal layer are significantly different, and the submucosal layer to be cut has a reticular fibrous softness and elasticity. It was possible to cut only the submucosa using the point having That is, in the first, second, and third aspects of the present invention, since the treatment portion is provided with the peak portion and the valley portion and the valley portion is provided with the cutting means, when the treatment portion is pushed into the submucosal layer The ridge enters the lower fiber, and the submucosal fiber is collected in the valley, and the submucosal layer is cut by the cutting means.
- the treatment tool for endoscopes of such a configuration when the treatment portion is pushed into the intrinsic muscle layer or mucous membrane, even if the peak portion abuts on the intrinsic muscle layer or mucous membrane, it does not contact the cutting means of the valley portion. There is no risk of damaging the intrinsic muscle layer or mucous membrane. Thus, only the submucosal layer to be cut can be cut quickly and safely. Further, since the cutting means is provided on the proximal side, the fibrous submucosa can be formed into valleys by performing a pulling operation to move the treatment portion to the proximal side. It can be collected and cut into pieces.
- the cutting means is a conductor connected to a high frequency current supply means.
- the high-frequency treatment instrument may be a monopolar type in which the conductor forms one of the pair of electrodes or a bipolar type in which the conductor forms both of the pair of electrodes.
- the monopolar high-frequency treatment tool is simple in structure and can provide an inexpensive treatment tool.
- the bipolar high-frequency treatment tool does not require a return electrode plate to be attached to the subject, and can provide a high safety V and a treatment tool.
- a fifth aspect of the present invention is characterized in that in the first to third aspects, the cutting means performs cutting by irradiating a laser. According to the fifth aspect, by irradiating a laser, the submucosa can be cut safely.
- the cutting means oscillates ultrasonic waves to perform cutting. According to the sixth aspect, it is possible to cut the thin film lower layer safely by emitting ultrasonic waves.
- a seventh aspect of the present invention is characterized in that, in any one of the first to sixth aspects, the treatment portion is inserted into a forceps channel of an endoscope.
- the endoscopic treatment tool can be inserted into and removed from the forceps channel of the endoscope. Therefore, replacement with another treatment tool is possible, and treatment such as endoscopic submucosal dissection can be easily performed.
- An eighth aspect of the present invention is the method according to any one of the first to seventh aspects, wherein the treatment portion expands or shrinks the distance between the mountain portions.
- the treatment portion expands or shrinks the distance between the mountain portions.
- between the mountains By widening the gap and widening the valley, treatment can be performed quickly by widening the range that can be cut in one operation.
- the treatment section can be made smaller by reducing the distance between the mountain portions, and for example, it can be inserted into the forceps channel of the endoscope.
- a ninth aspect of the present invention is characterized in that, in any one of the first to eighth aspects, the treatment section is supported via a swing mechanism that adjusts the posture of the treatment section. . According to the eighth aspect, since the treatment section is supported via the swing mechanism, the posture of the treatment section can be adjusted to be independent, and treatment can be easily performed.
- the valley portion is provided with a plurality of cutting means, and the cutting means to be used is selected from the plurality of cutting means. Selecting means is provided.
- the treatment section is provided with a plurality of cutting means so that the cutting means to be used can be selected. For example, the cutting depth can be adjusted.
- the eleventh aspect of the present invention is characterized in that, in any one of the first to tenth aspects, the cutting means is disposed at a position where the end face force in the thickness direction of the treatment portion is also separated. According to the eleventh aspect, the cutting means is disposed at a position distant from the end face in the thickness direction.
- a twelfth aspect of the present invention is the method according to any one of the first to eleventh aspects, wherein the peak portion is formed in a tapered shape that tapers toward the tip end, and the tip is rounded. It is characterized by having an openability. Therefore, according to the twelfth aspect of the present invention, it is possible to prevent the peak from being inserted into the submucosal layer of the fiber or immediately cutting the proper muscle layer by the peak. In addition, non-incision means that it does not cut
- the treatment portion is composed of the peak portion and the valley portion and the cutting means is provided only in the valley portion, only the fibrous submucosa layer can be cut. Submucosal dissection can be performed quickly and safely.
- FIG. 1 A perspective view showing a first embodiment of a treatment tool for an endoscope according to the present invention
- FIG. 2 Front view of the treatment unit of Fig. 1
- FIG. 3 A sectional view of a treatment section showing a section taken along line 3--3 of FIG.
- FIG. 4 A sectional view of the treatment portion showing a section taken along line 4-4 of FIG.
- FIG. 5 An explanatory view showing the operation method of the endoscopic treatment tool
- FIG. 5A shows a state in which marking is performed around the lesion
- FIG. 5B shows a state in which the lesion is expanded.
- Fig. 5C shows the state in which the mucous membrane is incised
- Fig. 5D shows the state in which the mucous membrane is incised
- Fig. 5E shows the state in which the submucosal layer is incised
- FIG. 7 A perspective view showing a second embodiment of the endoscopic treatment tool according to the present invention
- FIG. 8 A sectional view showing the treatment unit of FIG.
- FIG. 9 A front view showing a treatment portion of a third embodiment of a treatment tool for endoscopes according to the present invention
- FIG. 10 A sectional view of the treatment portion of FIG.
- FIG. 11 A front view showing a treatment portion of a fourth embodiment of the endoscopic treatment tool according to the present invention
- FIG. 12 A sectional view showing the treatment unit of FIG.
- FIG. 13 A perspective view showing the treatment portion of the fifth embodiment of the endoscopic treatment tool according to the present invention
- FIG. 14 An exploded perspective view showing the treatment unit of FIG.
- FIG. 15 A perspective view showing the treatment portion of the sixth embodiment of the endoscopic treatment tool according to the present invention
- FIG. 16 A side view of the treatment unit of FIG.
- FIG. 17 A sectional view of the treatment section taken along line 17-17 in FIG.
- FIG. 18 An explanatory view for explaining the operation method of the endoscopic treatment tool of FIG.
- FIG. 19 A cross-sectional view showing the endoscopic treatment tool swingably supporting the treatment section
- FIG. 20 A sectional view showing a state in which the curved portion of FIG. 19 is curved.
- FIG. 21 is a cross-sectional view showing a treatment tool for an endoscope having a swing mechanism different in configuration from FIG.
- FIG. 22 An explanatory view for explaining a treatment unit having a configuration different from that in FIG. 3.
- FIG. 22A shows a state in which the distance between peak portions 30A, 30A and 3 OA is narrowed. It shows the state where the interval is extended.
- FIG. 23 A diagram showing a treatment portion having a peak portion different in shape from the treatment portions of FIGS. 3 and 4; Shows a plan sectional view of the treatment unit, and FIG. 23B shows a side sectional view of the treatment unit.
- FIG. 24 A view showing a treatment portion having a peak portion different in shape from the treatment portions in FIGS. 16 and 17;
- FIG. 24B shows a plan sectional view of the treatment unit.
- FIG. 25 A perspective view showing the treatment portion of a seventh embodiment of the endoscopic treatment tool according to the present invention
- FIG. 26 A plan sectional view of the treatment portion of FIG.
- FIG. 27 A side sectional view of the treatment portion of FIG.
- FIG. 28 Rear view of the treatment section of Fig. 25
- FIG. 29 A perspective view showing the treatment section of the eighth embodiment of the endoscopic treatment tool according to the present invention
- FIG. 30 A plan sectional view of the treatment section of FIG.
- FIG. 31 Front view of the treatment unit of FIG.
- FIG. 32 A rear view of the treatment unit of FIG.
- FIG. 33 A plan sectional view showing the treatment portion of the ninth embodiment of the endoscopic treatment tool according to the present invention
- FIG. 34 A side view of the treatment unit of FIG.
- FIG. 35 A plan sectional view showing a deformed state of the processing unit of FIG.
- FIG. 36 A plan sectional view showing a deformed state of the treatment unit of FIG.
- FIG. 37 A perspective view showing a deformed state of the treatment unit of FIG.
- 10 ... endoscope treatment tool, 12 ... insertion section, 14 ... operation part, 16 ... flexible sheath, 18 ... wire, 20 ... treatment portion, 30 ... main body , 30A ... Yamabe, 30 ⁇ ... valley, 30D ... 30F ... 30E ... valley, 32 ... electrode plate, 33 ... electrode plate, 80 ...
- FIG. 1 is a perspective view showing the endoscopic treatment tool 10 according to the first embodiment.
- the endoscopic treatment tool 10 mainly comprises an insertion portion 12 inserted into a body cavity and a hand operation portion 14 connected to the insertion portion 12.
- the insertion portion 12 is non-conductive.
- a conductive wire 18 disposed inside the flexible sheath 16, and a treatment portion 20 attached to the distal end of the flexible sheath 16.
- the distal end of the wire 18 is connected to the treatment unit 20, and the proximal end of the wire 18 is connected to the connector 22 of the hand operation unit 14.
- the connector 22 is electrically connected to a high frequency supply device (not shown) for supplying a high frequency current. Further, an operation button 26 is provided on the grip 24 of the hand operation unit 14, and by pressing the operation button 26, a high frequency current is supplied to the wire 18.
- the endoscope treatment tool 10 configured as described above is operated by gripping the grip portion 24 of the hand operation portion 14 and inserting and removing the insertion portion 12 into a forceps channel (not shown) of the endoscope.
- FIG. 2 is a front view of the treatment unit 20 of FIG. 1 as viewed in the direction of arrow A.
- 3 is a plan sectional view of the treatment unit 20 taken along line 3-3 of FIG. 2
- FIG. 4 is a side sectional view of the treatment unit 20 taken along line 4-4 of FIG.
- the main body 30 of the treatment section 20 is made of a nonconductive material such as ceramic or plastic, and provided between two peak portions 30A, 30A on the tip side and the peak portions 30A, 30A. It is formed in a sawtooth shape having a valley 30B, two proximal ridges 30D and 30D, and a valley 30E provided between the valleys 30D and 30D.
- the tips of the ridges 30A, 30A are formed into an blunt blunt shape so that pressing the ridges 30A, 30A against the mucous membrane 34 or the intrinsic muscle layer 36 (see FIG. 6) described later does not cut the tissue. Configured That is, the mountain portions 30A, 30A are configured to be non-cuttable to the mucous membrane 34 and the intrinsic muscle layer 36.
- An electrode plate 32 is provided in the valley portion 30 B of the main body 30.
- the electrode plate 32 is also a conductive force such as metal and is electrically connected to the wire 18 as shown in FIG.
- the wire 18 is electrically connected to the connector 22 of FIG. 1 as described above, and by connecting the connector 22 to a high frequency current supply means (not shown), a high frequency current can be supplied to the electrode plate 32.
- the endoscope treatment tool 10 according to the first embodiment is a monopolar type in which only one electrode is provided in the treatment section 32, and the other electrode (counter electrode plate) is attached to the subject.
- the electrode plate 32 is provided in the valley portion 30 B, and the tip of the electrode plate 32 is a mountain portion 30 B. It is disposed approximately at an intermediate position between the top of A and the bottom of the valley 30B. Therefore, when the peak portions 30A, 30A are brought into contact with the mucous membrane or the intrinsic muscle layer, the electrode plate 32 of the valley portion 30B does not come in contact with the mucous membrane or the intrinsic muscle layer. Since the electrode plate 32 is not formed in the mountain portion 30A, the formation range of the electrode plate 32 is not particularly limited. Therefore, the electrode plate 32 may be formed only at the bottom of the valley portion 3 OB, or may be formed in a wide range excluding the vicinity of the top of the peak portion 30A.
- the electrode plate 32 is disposed at a substantially intermediate position of the main body 30 in the thickness direction of the main body 30. That is, the electrode plate 32 is disposed so as to be about 1Z 2 of the distance t of the distance h from the lower surface 30 C of the main body 30. Therefore, when the lower surface 30C of the main body 30 is brought into contact with, for example, the proper muscle layer, since the electrode plate 32 is separated from the proper muscle layer by the distance h, there is no risk of damaging the proper muscle layer.
- the height position (that is, the distance h) of the electrode plate 32 is not limited to 1Z2 of the thickness t of the main body 30.
- the lower surface 30C of the main body 30 can also be set at an arbitrary position. The cutting position can be set freely in the height direction.
- the electrode plate 33 provided on the mountain portion 30D, the valley portion 30E, and the valley portion 30E has the same configuration as the mountain portion 30A, the valley portion 30B, and the electrode plate 32, respectively, and the description thereof is omitted. Do.
- a method for performing endoscopic submucosal dissection using the above-described endoscopic treatment tool 10 will be described based on FIGS. 5A, 5B, 5C, 5D, 5E and 5F.
- a lesion 34A is present in the mucous membrane 34, and this procedure is a procedure for removing the lesion 34A without damaging the intrinsic muscle layer 36.
- the lesion 34 A is confirmed by an observation optical system (not shown) provided in the endoscope insertion portion 40. At that time, a pigment such as indigo carmine is sprayed from the jet port of the endoscope insertion portion 40 to stain the lesion 34A.
- markings 42, 42,... are performed around the lesion 34A at predetermined intervals.
- the method of marking 42 is not particularly limited, for example, a high-frequency knife 44 having a needle-like tip is used.
- the high frequency knife 44 has a thin metal wire inserted into the inside of the insulating tube, and the tip of the metal wire is protruded by a predetermined length at the end of the insulating tube, and the protruding portion of the metal wire is an electrode And the high frequency current flows Thus, the internal cavity wall is incised or excised.
- the injection needle 46 is inserted into the forceps channel of the endoscope insertion unit 40 to derive the tip force. Then, the injection needle 46 locally injects (locally injects) the drug solution into the submucosal layer 38 (see FIG. 6) of the mucous membrane 34 around the lesion 34A.
- the drug solution sodium hyaluronate with high force viscosity generally used for physiological saline may be used.
- the injection needle 46 is pulled out of the forceps channel of the endoscope insertion portion 40 and the high frequency knife 44 is passed. Then, as shown in FIG. 5C, along the positions of the markings 42, 42 ⁇ , the mucous membrane 34 on the outer periphery of the lesion 34A is incised with the high frequency knife 44. When the incision is complete, as shown in FIG. 5D, the mucous membrane 34 of the lesion 34A contracts and the submucosal layer 38 becomes visible.
- the forceps channel force of the endoscope insertion portion 40 also withdraws the high frequency knife 44, inserts the endoscopic treatment tool 10 of the present embodiment into the forceps channel, and causes the treatment portion 20 to be drawn out. Then, the treatment portion 20 is pushed into the submucosal layer 38 at the incision position. Next, as shown in FIG. 6, the treatment section 20 is pressed against the submucosal layer 38 below the lesion 34A. At that time, since the peaks 30A and 30A of the treatment section 20 enter into the fibers of the submucosa layer 38, the fibers of the submucosa layer 38 penetrate between the peaks 30A and 30A, that is, the valleys 30B.
- the fibrous material of the submucosal layer 38 touches the electrode plate 32 which is the cutting means, the high frequency current flows intensively and the submucosal layer 38 is cut.
- the lesion 34A is gradually exfoliated from the submucosa 38, as shown in FIG. 5E. Thereby, the lesion 34A can be separated as shown in FIG. 5F.
- the electrode plate 32 is separated by the distance 30C from the lower surface 30C. There is no risk of contact with muscle layer 36. Therefore, since the high frequency current is not likely to concentrate and flow in the intrinsic muscle layer 36, damage to the intrinsic muscle layer 36 can be prevented.
- the intrinsic muscle layer 36 and the mucous membrane 34 that are not fibrous are in the valley portion 30B. Get in Because there is a risk that the intrinsic muscle layer 36 and the mucous membrane 34 will be cut.
- the cutting can be performed also at the time of the pullback operation for moving the treatment unit 20 to the proximal side. That is, when the treatment unit 20 is pulled back, the valleys 3 OD and 30 D of the main body 30 are inserted between the fibrous submucosal sublayers 38, and the submucosa sublayers 38 are collected in the valleys 32E and brought into contact with the electrode plate 33. Therefore, the submucosal layer 38 can be cut safely. At this time, since the cutting is performed while pulling back the treatment unit 20, as soon as a force is applied to the treatment unit 20, the submucosal layer 38 can be cut quickly and safely.
- the endoscopic treatment tool 10 cuts only the fibrous submucosal sublayer 38, it quickly cuts the submucosal sublayer 38 without any risk of accidentally cutting the proper muscular layer 36 or the mucous membrane 34. And it can be done safely.
- the peak 30A, the valley 30B, and the electrode plate 32 may be provided only on the distal end side of the treatment section 20.
- the mountain portion 30D, the valley portion 30E, and the electrode plate 33 may be provided only on the proximal end side of the treatment unit 20. In the case of V, displacement, the submucosal layer 38 can be cut safely.
- FIG. 7 is a perspective view showing the endoscope treatment tool according to the second embodiment
- FIG. 8 is a side sectional view showing the treatment portion.
- the example which provides a cutting part (a peak part, a valley part, and an electrode plate) only in a front end side is shown in FIG. 7, FIG. 8, the cutting part of the same structure as a front end side is provided also in a base end side. .
- an embodiment in which the cutting portion is provided only on the distal end side or an embodiment in which the cutting portion is provided only on the proximal end side (not shown) is also possible.
- the treatment tool 50 for an endoscope of the second embodiment is provided with three electrode plates 32, 32, 32 S at the valley 30B of the treatment section 20.
- the electrode plates 32, 32, 32 are arranged in parallel at different distances on the lower surface 30C of the main body 30.
- the electrode plates 32, 32, 32 are respectively connected to different wires 18, 18, 18.
- the three wires 18, 18, 18 are connected to the switching switch 52 of the hand operation unit 14.
- the changeover switch 52 is configured to alternatively connect one of the three wires 18, 18, 18 to the connector 22. Therefore, switching By operating the switch 52, any one of the electrode plates 32, 32, 32 can be selected to pass high frequency current.
- the wires 18, 18, 18 are disposed in a state in which they are separated by a cover covered with the non-conductive member shell or a non-conductive partition member so as not to short circuit.
- the endoscope treatment tool 50 configured as described above can select one of the three electrode plates 32, 32, 32 to pass high-frequency current, so the cutting position is set at the treatment section 20.
- the thickness direction of the body 30 can be selected. That is, according to the endoscope treatment tool 50, the cutting depth can be adjusted in three steps, and peeling at a stable depth becomes possible.
- three electrode plates 32, 32, 32 are provided, but the number of electrode plates 32 is not limited to this, and two or four or more electrodes are provided. Place a plate 32 and make a choice.
- FIGS. 9 and 10 are a front view and a plan sectional view showing the treatment unit 54 of the third embodiment, respectively.
- 9 and 10 show an example in which the cut portion (peak portion, valley portion and electrode plate) is provided only on the distal end side, but a cut portion having the same configuration as the distal end side is also provided on the proximal end side.
- a mode in which the cutting portion is provided only on the distal end side or a state (not shown) in which the cutting portion is provided only on the base end side are also possible.
- the endoscope treatment tool of the third embodiment is a bipolar treatment tool in which a pair of electrodes for supplying high frequency current is provided in the treatment unit 54. That is, in the treatment section 54, two electrode plates 32A and 32B are provided in the valley portion 30B of the main body 30. As shown in FIG. 9, each electrode plate 32A, 32B is disposed at a predetermined distance h from the lower surface 30C of the main body 30. Also, two electrode plates 3
- 2A and 32B are disposed to face the side surface of the valley 30B, and the wires 18A and 18B are electrically connected to the electrode plates 32A and 32B.
- the wires 18A and 18B are connected to the connector 22 of the hand operation unit 14 (see FIG. 1), and high frequency current is transmitted to the two electrode plates 18A and 18B by connecting high frequency current supply means (not shown) to the connector 22. It is energized.
- the two wires 18A and 18B may be covered with the non-conductive shell or separated by a non-conductive partition member so as not to short.
- body tissue is cut when a high frequency current flows between the pair of electrode plates 32A and 32B. Therefore, only the fibrous submucosal sublayer 38 which has entered the valley portion 30B is cut, so that the submucosal layer 38 can be cut safely and quickly without the possibility of cutting the mucous membrane 34 or the intrinsic muscle layer 36.
- the treatment tool for an endoscope described above is a bipolar type
- a return electrode plate (not shown) attached to the subject is not necessary, and the risk of perforation is small, and the high circumference to the peripheral region is high. There is little influence of wave current.
- the arrangement of the two electrode plates 32A, 32B is not limited to the above embodiment.
- two electrode plates 32A, 32B may be provided in parallel at different height (depth) positions. It is also good.
- FIGS. 11 and 12 are a front view and a plan cross-sectional view, respectively, showing the treatment unit 56 of the fourth embodiment.
- the cutting part a peak part, a valley part, and an electrode plate
- FIGS. 11 and 12 an embodiment in which the cutting portion is provided only on the distal end side, or an embodiment (not shown) in which the cutting portion is provided only on the base end side is also possible.
- the treatment portion 56 of the endoscopic treatment tool shown in these figures is formed in a sawtooth shape in which the main body 30 is provided with three peak portions 30A, 3 OA, 30A and two valley portions 30B, 30B. , And the valleys 30B, 30B are provided with electrode plates 32, 32, respectively.
- Each electrode plate 32, 32 is electrically connected to a wire 18 through a metal plate 58, and the wire 18 is connected to the connector 22 of the hand operation unit 14 (see FIG. 1). Therefore, by connecting high-frequency current supply means (not shown) to the connector 22, high-frequency current can be made to flow simultaneously from both electrode plates 32, 32.
- the endoscopic treatment tool configured as described above can simultaneously cut the submucosa layer 38 (see FIG. 6) in the two valleys 30B and 30B, so the area to be cut becomes large.
- the lower layer 38 of the thin film can be cut efficiently.
- the number of valleys 30 B and 30 B is not limited to one or two, and three or more valleys 30 B may be provided, and the electrode plate 32 may be provided in each valley 30 B.
- the electrode plate 32 may be provided in each valley 30 B.
- the cutting range is expanded, and the submucosa 38 can be cut more quickly.
- a plurality of valleys 30B and 30B are provided, a plurality of electrode plates 32 may be provided in each valley 30B as in the second embodiment so that the cutting depth can be selected, or A single valley 30B with both electrodes may be bipolar! //.
- FIG. 13 and FIG. 14 are a perspective view and an exploded perspective view, respectively, showing the treatment unit 60 of the fifth embodiment.
- the treatment section 60 mainly includes an upper piece 62, a lower piece 64, and a pedestal 66.
- a cradle 66 is secured to the distal end of the flexible sheath 16. Further, the pedestal 66 is provided with a shaft 68 for swingably supporting the upper piece 62 and the lower piece 64.
- a flange 68A is provided at the upper end of the body 68, and engagement of the upper piece 62 described later prevents the upper piece 62 from coming off. Further, control pins 72, 74 for restricting the movement range of the upper piece 62 and the lower piece 64 are erected on the pedestal 66.
- the upper piece 62 is formed in a substantially V-shape, and includes peaks 62A and 62A and a valley 62B.
- An electrode plate 32 is provided in the valley portion 62 B, and the electrode plate 32 is electrically connected to the wire 18 when the upper piece 62 is mounted on the receiving table 66.
- the upper piece 62 is provided with a hole 62D, and the upper piece 62 is supported swingably on the receiving stand 66 by inserting the shaft body 68 of the receiving stand 66 through the hole 62D.
- a restricting groove 62E is formed in the upper piece 62, and the aforementioned restricting pin 72 is engaged with the restricting groove 62E to restrict the swing range of the upper piece 62.
- a groove 62F is formed on the lower surface 62C of the upper piece 62, and a spring 76 described later is disposed inside the groove 62F.
- the lower piece 64 is formed in a substantially V-shape, and includes peaks 64A and 64A and a valley 64B.
- An electrode plate 32 is provided in the valley portion 64B, and the electrode plate 32 is electrically connected to the wire 18 when the lower piece 64 is attached to the receiving base 66.
- a hole 64D is formed in the lower piece 64, and the lower piece 64 is swingably supported by the receiving stand 66 by inserting the shaft body 68 of the receiving stand 66 through the hole 64D.
- a restriction groove 64E is formed, and the above-mentioned restriction pin 74 is engaged with the restriction groove 64E. The swing range is restricted.
- a groove 64F is formed on the upper surface 64C of the lower piece 64, and a spring 76 is disposed inside the groove 64F.
- the spring 76 is disposed inside the groove 62F of the upper piece 62 and the groove 64F of the lower piece 64, thereby biasing the upper piece 62 and the lower piece 64 in the expanding direction as shown in FIG.
- the upper piece 62 and the lower piece 64 are swingably supported. Accordingly, by overlapping the upper piece 62 and the lower piece 64, the treatment portion 56 can be made smaller, and the treatment portion 56 can be inserted into the forceps channel of the endoscope insertion portion 40 (see FIG. 5).
- the forceps channel force is also derived from the treatment portion 56, the upper piece 62 and the lower piece 64 are opened by the biasing force of the spring 76, so the cutting range by the electrode plates 32, 32 is broadened, and the cutting operation is performed. Can be done efficiently.
- the swing between the upper piece 62 and the lower piece 64 is configured to open or close the gap between the peak portions, but the configuration is the same as that described above. It is not limited to the above embodiment.
- the main body 30 is made of nonconductive rubber, and the electrode plates 32, 32 are made of conductive rubber. , 32 are bonded to the body 30.
- the gaps between the ridges 30A, 30A, and 30A are open as shown in FIG. 22B.
- the main body 30 can be elastically deformed so as to narrow the distance between the mountain portions 30A, 30A, 30A as shown in FIG.
- the treatment unit 20 returns to the original shape as shown in FIG. 22B, and the distance between the ridges 30A, 30A, and 30A increases. Therefore, since the valleys 30B, 30B are spread, the cutting of the submucosal layer 38 can be performed in a wide range by the electrode plates 32, 32.
- the shape of the force main body 30 in which the main body 30 of the treatment portion 20 is formed in a sawtooth shape by arranging the peak portions 30A and the valley portions 30B in a straight line is
- the main body 30 may be formed in a gear shape by arranging the non-peak portions 30A and the valley portions 30B circumferentially. The embodiment will be described below.
- FIG. 15 is a perspective view showing the endoscopic treatment tool 80 according to the sixth embodiment.
- Figure 16 16 is a side view of the treatment section 82
- FIG. 17 is a cross-sectional view of the treatment section 82 taken along line 17-17 in FIG.
- the main body 84 of the treatment section 82 is attached to the tip of the flexible sheath 16.
- a main body 84 of the treatment portion 82 is formed in a gear shape, and a plurality of U-shaped or V-shaped valleys (grooves) 84B are formed on the outer peripheral surface of the main body 84 at regular intervals. That is, on the outer peripheral surface of the main body 84, peak portions 84A and valley portions 84B are alternately and repeatedly formed.
- Each valley portion 84B is provided with an electrode portion 86B made of a conductor such as metal. As shown in FIG.
- the electrode portion 86B is constituted by a single metal plate 86 embedded in the inside of the main body 84, and a part of the metal plate 86 is exposed to the outside at the valley portion 82B. Portion 86B is formed.
- the metal plate 86 is electrically connected to the wire 18, and the sheather 18 is inserted into the flexible sheath 16 and connected to the connector 22 of the hand operation unit 14.
- high frequency current supply means not shown
- the electrode portion 86B is disposed at a predetermined distance h from the bottom surface 84C of the main body 84, and when the bottom surface 84C abuts on the intrinsic muscle layer 36 (see FIG. 6), The electrode portion 86 B is not in contact with the intrinsic muscle layer 36.
- the electrode portions 86 ⁇ , 86 ⁇ ⁇ may have a configuration in which a conductor is individually disposed in each valley portion 84B.
- the forceps channel force of the endoscope insertion portion 40 also leads out the treatment portion 82, and the treatment portion 82 is brought out of the treatment portion 82, as shown in FIG. Approach the submucosal layer 38 after dissection by pushing in (arrow A direction). Then, the treatment unit 82 is moved in the radial direction (the arrow B direction) of the main body 84 together with the endoscope insertion unit 40. As a result, the peaks 84A, 84A, ... of the main body 84 enter the fibers of the submucosal layer 38, and the fibers of the submucosa layer 38 are collected in the valleys 84, 84 ⁇ . Then, when the fibrous material of the submucosal layer 38 touches the electrode portion 86B of the valley portion 84B, the high-frequency current concentrates on the submucosal layer 38 and is cut.
- the endoscopic treatment tool 80 can easily cut the submucosal layer 38 simply by moving the treatment section 82 in the radial direction of the main body 84. At that time, since the treatment section 82 is always disposed in front of the endoscope insertion section 40, it is possible to always observe the cutting operation with the endoscope. Operation can be performed easily.
- the treatment tool 80 for an endoscope is provided with the electrode portion 86B in the valley portion 84B of the main body 84, so it is possible to cut only the submucosal layer 38 which is fibrous. That is, in the case of the non-fibrous mucous membrane 34 and the intrinsic muscle layer 36, it does not enter the valleys 84B and 84B by coming into contact with the ridges 84 and 84 and therefore the mucous membranes 34 and specific Muscle layer 36 may not be damaged.
- the electrode portion 86B is disposed at a predetermined distance h away from the lower surface 84C of the main body 84, so that the lower surface 84C of the main body 84 abuts on the intrinsic muscle layer 36 Also in this case, there is no possibility that the intrinsic muscle layer 36 is cut. Therefore, according to the endoscopic treatment tool 80, only the submucosal layer 38 can be cut safely and quickly.
- the endoscopic treatment tool 80 is pushed in the derivation direction from the forceps channel to approach the submucosa layer 38, the approach to the cut portion is easy, and the operability is good.
- the cutting depth may be adjusted as in the second embodiment, or a bipolar treatment tool may be configured.
- the shapes of the mountain portions 30A, 62A, 64A, 84A are not particularly limited, but the shapes of the mountain portions 30A, 62A, 64A, 84A are not particularly limited.
- the shape is such as to prevent cutting of the intrinsic muscle layer 36.
- the peak portions 30A and 30A on the tip side are formed in a substantially conical tapered shape that becomes thinner toward the tip, and the tips of the peak portions 30A and 30A are rounded. Become non-incisive.
- FIGS. 23A and 23B show an example in which the cutting means is provided only on the distal end side, it is preferable to provide a cutting means having the same configuration on the proximal end side. That is, it is preferable to form the proximal side peaks 30D and 30D (see FIG. 3 and FIG. 4) into a substantially conical tapered shape that becomes thinner toward the tip, and to make the tip rounded and non-cutting. .
- a cutting means only in the proximal end side it can comprise similarly.
- peak portions 84A and 84A shown in FIGS. 16 and 17 may be formed as shown in FIGS. 24A and 24B.
- the ridges 84A and 84A shown in FIGS. 24A and 24B have a generally conical shape that tapers toward the tip. It has a tapered shape, and its tip has a rounded shape and is non-openable. This prevents the damage to the intrinsic muscle layer 36 when the peak portions 84A and 84A are immediately inserted into the fibrous submucosal layer 38 and the peak portions 84A and 84A are pressed against the intrinsic muscle layer 36. can do.
- FIG. 25 to FIG. 27 are respectively a perspective view, a plan sectional view and a side sectional view showing the treatment section 130 of the seventh embodiment, and FIG. 28 is a rear view of the treatment section 130 seen from the proximal direction. .
- the treatment section 130 of the seventh embodiment shown in these figures is provided with cutting means on the distal end side and the proximal end side of the non-conductive main body 132, respectively. That is, the electrode plate 134 is provided on the distal end side of the main body 132, and the electrode plate 136 is provided on the proximal end side of the main body 132.
- the main body 132 of the treatment section 130 is provided with two peak portions 132A, 132A on the distal end side, and a valley portion 132B is formed between the peak portions 132A, 132A, and two peaks are formed on the proximal end side.
- the distance between the peak portions 132A and 132A on the distal end side is smaller than the distance between the peak portions 132C and 132C on the proximal end side, and in the entire main body 132, the distal end side is smaller than the proximal end.
- the size of the body 132 is substantially smaller than the inner dimension of the forceps channel of the endoscope, and can be inserted into the forceps channel of the endoscope.
- the ridges 132A and 132C are formed in a substantially conical tapered shape in which the tip is gradually tapered, and the tip is rounded. It is designed to have a non-cutting property. Therefore, the ridges 132A and 132C can be smoothly inserted into the fibrous submucosal layer 38, and when the ridges 132A and 132C are pressed against the muscle layer 36, the muscle layer 36 is cut. Can be prevented
- Electrode plates 134 and 136 are provided in the valley portion 132 B and the valley portion 132 D, respectively.
- the electrode plates 134 and 136 are provided substantially at an intermediate position in the thickness direction of the main body 132, as shown in FIG. 27, and when the intrinsic muscle layer 36 contacts the upper and lower surfaces of the main body 132, There is an electrode plate 134, 136 [This insect pest! In addition, as shown in FIG.
- the inner plate of valley 132 B, 132 D, ie, the top of valley 132 A, the top of valley 132 C The electrode plates 134 and 136 are not in contact with the intrinsic muscle layer 36 when the apex of the peak portion 132A and the apex of the peak portion 132C are pressed against the eigen-muscle layer 36. It is The electrode plate 134 and the electrode plate 136 are electrically connected by the conductor 138 and further connected to the wire 18.
- the treatment unit 130 of the seventh embodiment configured as described above first pushes the body 132 into the interior of the submucosa layer 38 by moving it to the distal end side. .
- the ridges 132A, 132A on the distal end side are inserted into the fibrous submucosal sublayer 38, and the submucosal layer 38 is collected in the valleys 132B and brought into contact with the electrode plate 134.
- a high frequency current flows in the submucosal layer 38 and the submucosal layer 38 is cut. Therefore, the treatment section 130 can be advanced to the distal end side while cutting the submucosal layer 38.
- the main body 132 After all the main body 132 is pushed into the submucosal layer 38, the main body 132 is moved to the proximal side, and a pullback operation is performed. As a result, the peaks 132C and 132C on the proximal end side of the main body 132 are inserted between the fibrous submucosa lower layers 38, and the submucosa lower layers 38 are collected in the valleys 132D and brought into contact with the electrode plate 136. As a result, a high frequency current flows in the submucosal layer 38 and the submucosal layer 38 is cut. Thus, the treatment section 130 can be advanced to the proximal side while cutting the submucosal layer 38.
- a pushing and cutting operation is performed to cut the submucosal layer 38 while advancing the treatment unit 130 to the distal end side again, and then, a drawing and cutting operation is performed to cut the submucosal layer 38 while pulling the treatment unit 130 back to the proximal end.
- a pushing and cutting operation is performed to cut the submucosal layer 38 while advancing the treatment unit 130 to the distal end side again, and then, a drawing and cutting operation is performed to cut the submucosal layer 38 while pulling the treatment unit 130 back to the proximal end.
- the lower film layer 38 is cut. Therefore, according to the seventh embodiment, the submucosal layer 38 is cut when the treatment section 130 is pushed in and pulled back, so that the submucosal layer 38 can be cut rapidly.
- the force can be transmitted to the submucosal layer 38, and the submucosal layer 38 can be cut as soon as possible.
- the operation can be performed while observing the cut portion from the observation optical system of the endoscope.
- the cutting means is provided on both the distal end side and the proximal end side of the treatment section 130, but the cutting means may be provided only on the proximal end side. That is, in the treatment tool of FIGS. 25 to 28, the distal end side of the main body 132 has a tapered shape which becomes smaller toward the distal end side, and The tip may be formed in a rounded shape. In this case, the submucosal layer 38 can be cut by moving the body 132 distally to push it into the fibrous submucosal layer 38 and then pulling the body 132 back. In the seventh embodiment described above, it is also possible to provide the cutting means only on the tip side. In that case, it is preferable that the proximal end be shaped so as not to be a large resistance when pulling back.
- FIGS. 29 to 32 are a perspective view, a plan sectional view, a front view from the distal end side, and a rear view of the proximal force side, respectively, showing the treatment unit 140 of the eighth embodiment.
- the treatment section 140 of the eighth embodiment shown in these figures is formed in a shape in which a non-conductive main body 142 is formed by combining four plate members in a cross shape. That is, the main body 142 is formed in a cross shape in which four plate members are disposed at an interval of 90 ° and connected on the central axis side of the treatment section 140.
- ridges 142A, 142A,... are formed by the outer peripheral portions of the plate members protruding to the front end side.
- a valley portion 142 B is formed between the peak portions 142 A, 142 A,.
- peak portions 142C, 142C are formed by the outer peripheral portions of the respective plate members protruding to the base end side, and valleys between the peak portions 142C, 142C.
- Part 142D is formed.
- a cross-shaped electrode plate 144 is provided in the valley portion 142B on the tip side.
- the electrode plates 144 are disposed apart from each other at the peak force of each peak portion 142A, so that the electrode plate 144 does not contact the intrinsic muscle layer 36 even when the peak portions 142A contact the specific muscle layer 36.
- a cross-shaped electrode plate 146 is provided in the valley portion 142D on the proximal end side.
- the electrode plate 146 is disposed apart from each peak 142C, and even when the peak 142C contacts the intrinsic muscle layer 36, the electrode plate 146 does not contact the intrinsic muscle layer 36.
- the electrode plate 144 and the electrode plate 146 are electrically connected by the conductor 148, as shown in FIG. 30, and the electrode plate 146 is electrically connected to the wire 18 to form an electrical connection.
- the distal end side of the main body 142 is smaller than the proximal end side, and the main body 142 can be easily pushed into the submucosal layer 38.
- each peak portion 142A, 142C of the main body 142 is formed to be smaller toward the tip end, and the tip is rounded so as to have non-cutting properties. Be done. Therefore, it is possible to prevent the specific muscle layer 36 from being damaged by the peak 142A or the peak 142C immediately after pushing the peak 142A or the peak 142C into the fibrous submucosal layer 38.
- the size of the main body 142 is substantially smaller than the inner dimension of the forceps channel of the endoscope, and can be inserted into the forceps channel of the endoscope without any problem.
- a push-out operation to cut the submucosa layer 38 while advancing the treatment unit 140 to the distal end side, and the proximal end of the treatment unit 140 The submucosal layer 38 is cut by repeating the drawing operation to cut the submucosal layer 38 while pulling back to the side. Therefore, the submucosal layer 38 is cut when the treatment section 140 is pushed and pulled back, so that the submucosal layer 38 can be cut rapidly.
- the electrode plates 144 and 146 are disposed at the center (on the central axis side) of the treatment instrument 140, the electrode plate can be rotated even if the treatment instrument 140 rotates around the axis. 144 and 146 are always centered. Therefore, the submucosal layer 38 can be cut without being affected by the posture of the treatment section 140.
- cutting means are provided on both the distal end side and the proximal end side of the treatment section 140, but cutting means may be provided only on the proximal end side. That is, the distal end side of the main body 142 is tapered so as to become smaller toward the distal end side, and the distal end thereof is slightly rounded.
- the main body 142 is formed by combining four plate members, but the number of plate members may be three or five or more. In any case, it is preferable to arrange the plate-like members at angular intervals, etc.
- FIG. 33 and FIG. 34 respectively show a plan sectional view and a side view showing a treatment unit 150 of the ninth embodiment. Further, FIG. 35 shows the treatment unit 150 when it is moved to the distal end side, and FIG. 36 shows the treatment unit 150 when it is moved to the base end side.
- the main body 152 is formed in a shape (or H shape) of an elastic member such as non-conductive rubber. Therefore, the main body 152 has the peaks 152A, 152A on the distal end side, and the valley 152B is formed between them, and the peak 152C, 1 on the proximal side. 52C, between which a valley 152D is formed. As shown in FIG. 33 and FIG. 34, each peak 152A and each peak 152C has a tapered shape that becomes thinner toward the tip, and is configured to be non-cutable with a rounded tip.
- Electrodes 154 and 156 are provided in the valleys 152 B and 152 D, respectively.
- the electrode body 154, 156 is disposed at a substantially intermediate position in the thickness direction of the main body 152.
- the electrode body 154 and the electrode body 156 are connected by the conductor 158 and further connected to the electrode plate 156 and the force S wire 18.
- the electrode bodies 154 and 156 are made of a conductive elastic member such as conductive rubber, and are elastically deformed together with the main body 152.
- Oka IJ bodies 160, 160 are embedded inside the main body 152.
- the rigid body 160 is disposed at a position connecting the peak portion 152A on the distal end side and the peak portion 152C on the proximal end side. Therefore, the main body 152, which is also an elastic member, becomes elastically deformed except for the portion in which the rigid body is contained !. Specifically, as shown in FIG. 35, the distance between the peak portions 152A and 152A on the distal end side is expanded and the distance between the peak portions 152C and 152C on the proximal end side is elastically deformed or narrowed as shown in FIG.
- the distance between the peak portions 152A and 152A on the distal end side is narrowed, and the distance between the peak portions 152C and 152C on the proximal end side is elastically deformed or the like.
- the rigid bodies 160, 160 are in parallel, and the maximum outer diameter of the treatment section 150 is minimized.
- the submucosa layer 38 when advancing to the end side inside the submucosa layer 38, the submucosa layer 38 becomes a resistance, as shown in FIG.
- the interval between the mountain portions 152A, 152A automatically spreads. Therefore, the wide submucosal lower layer 38 can be gathered in the valley portion 152 B on the distal end side, and the submucosal layer 38 can be rapidly cut by the electrode body 154 of the valley portion 152 B.
- the submucosal layer 38 on the proximal side becomes a resistance, and as shown in FIG. 36, the mountain portions 152C and 152C The interval spreads automatically. Therefore, a wide range of the submucosal layer 38 can be collected in the proximal valley portion 152D, and the sublayer 38 can be rapidly cut by the electrode body 156 of the valley portion 152D. Further, according to the treatment unit 150 of the ninth embodiment, the main body 152 after cutting returns to the natural state shown in FIG. 34, so the maximum outer diameter dimension of the main body 152 is reduced, and the treatment unit 150 is removed. It can be easily inserted into the forceps channel of the endoscope.
- the treatment section 150 be configured to be fixable in the state where the maximum outer diameter dimension is the smallest (that is, the state of FIG. 33).
- a ring-shaped fitting member to be fitted into the base end side is provided on the ridges 152C and 152C, and this fitting member is provided along the sheath 16 so as to be slidable, and further fitted to the hand operation portion 14 It is preferable to provide slide operation means for the member.
- the ridges 152C and 152C of the treatment unit 150 can be fixed by the fitting members, the treatment unit 150 can be fixed with the smallest maximum outer diameter dimension. It can be securely inserted into the forceps channel of the mirror.
- each treatment portion 20, 54, 56, 60, 82, 130, 140, 150 is fixed to the distal end of the flexible sheath 16, but is limited thereto Alternatively, each treatment unit 20, 54, 56, 60, 82, 130, 140, 150 may be supported via a swing mechanism.
- FIG. 19 is a cross-sectional view of the endoscopic treatment tool 90 in which the bending portion 92 (swinging mechanism) is provided between the treatment portion 82 and the flexible sheath 16.
- the treatment section 82 is supported via a plurality of (for example, five) cup members 100 and a bending section 92 composed of 100 ⁇ .
- Each cup member 100 is formed with a hole 100A through which the wire 18 is inserted.
- the distal end of the wire 18 is fixed to the main body 84 of the treatment section 82, and the proximal end is connected to the slider 94 of the hand operation section 14.
- the slider 94 is slidably supported on the main body 96 of the hand operation unit 14, and locking and unlocking of the slider 94 and the main body 96 are performed by operating a lock screw 98 provided on the slider 94.
- the slider 94 is formed with a flange 94A for putting the index finger and the middle finger of the operator, and a ring 96A for putting the operator's thumb is formed at the proximal end of the main body 96, Ru.
- the flexible sheath 16 is fixed at its proximal end to the main body 96 of the hand operation unit 14 and at its distal end to the most proximal cup member 100. Also, the flexible sheath 16 has appropriate rigidity The flexible sheath 16 is prevented from breaking or collapsing when the slider 94 is slid proximally to increase the tension of the wire 18.
- the curved portion 92 is covered by a coated tube 102 which also provides a soft material force such as rubber.
- the distal end of the covering tube 102 is fixed to the main body 84 of the treatment section 82, and the proximal end of the covering tube 102 is attached to the proximal end of the flexible sheath 16.
- the endoscope treatment tool 90 configured as described above is caused to slide the slider 94 of the hand operation unit 14 toward the distal end with respect to the main body 96, the tension of the wire 18 is lowered, and each force is removed. The friction between the sliding members 100 decreases. Therefore, the bending portion 92 can be freely bent, for example, as shown in FIG.
- the endoscopic treatment tool 90 since the bending portion 92 can be bent, the posture of the treatment portion 82 can be freely adjusted and fixed. As a result, the approach to the submucosal layer 38 of the treatment section 82 is facilitated, and the cutting operation of the submucosal layer 38 can be easily performed.
- each treatment unit 20, 54, 56, 60, 82, 130, 140, 150 is not limited to the embodiment described above, and may be configured as shown in FIG. 21, for example. It is also good.
- the treatment portion 82 is supported via the bending portion 112.
- the curved portion 112 has a plurality of cylindrical joint rings 114, 114..., And the joint rings 114 are rotatably connected to each other by a pin 116.
- the node ring 114 at the tip of the plurality of node rings 114 is fixed to the treatment section 82, and the tip of the operation wires 118, 118 is fixed to the node ring 114.
- the operation wires 118, 118 are threaded into the flexible sheath 16 and are put on the pulley 120 of the hand operation unit 14.
- the bending portion 112 can be freely bent, and the posture of the treatment portion 82 can be freely adjusted. Therefore, the approach to the submucosal layer 38 of the treatment section 82 is facilitated, and the cutting operation of the submucosal layer 38 can be easily performed.
- FIG. 21 shows a curved structure in which bending is performed only in two directions (upper and lower).
- the force bending direction is not limited to this, and a structure in which the bending is performed in four directions, upper, lower, left, and right
- each treatment unit 20, 54, 56, 60, 82, 130, 140, 150 rotates the treatment unit 82 using, for example, rack and pin.
- the treatment portion 82 may be supported by a linear member made of a shape memory material, and the posture of the treatment portion 82 may be changed by electrically heating and deforming the linear member.
- the cutting means of the above-described embodiment is to cut by flowing a high frequency current.
- the type of the force cutting means is not limited to this, and cutting means using laser or ultrasonic wave is used. I'm sorry.
- the tip of the optical fiber is disposed at the position of the electrode plate 32, 33, 86B, 134, 136, 144, 146, 154, 156 described above, and the optical fiber is inserted into the flexible sheath 16.
- the laser is irradiated to the submucosal sublayer 38 which has entered the valley, the submucosal layer 38 can be cut by the laser.
- the irradiation means of the laser may be provided inside the valley and on one peak side, and the laser may be irradiated toward the other peak side.
- the irradiation means of the laser may be provided inside the valley and on one peak side, and the laser may be irradiated toward the other peak side.
- each treatment section 20, 54, 56, 60, 82, 130, 140, 150 is substantially larger than the forceps channel of the endoscope. Are made smaller Preferably, it can be inserted into the forceps channel of the endoscope.
- substantially small means that each treatment section 20, 54, 56, 60, 82, 130, 140, 150 can be drawn into the forceps channel of the endoscope without any trouble, for example, the main body 30, 84, When 132, 142, 152 are made of an elastic material such as rubber and the outer periphery is rounded, the outer size of the main body 30, 84, 132, 142, 152 is larger than the inner size of the insulator channel.
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- Cardiology (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Surgical Instruments (AREA)
- Endoscopes (AREA)
- Laser Surgery Devices (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06797839.5A EP1943972B1 (en) | 2005-09-26 | 2006-09-12 | Instrument for endoscopic treatment |
JP2007536455A JP4794564B2 (ja) | 2005-09-26 | 2006-09-12 | 内視鏡用処置具 |
US11/992,515 US9220560B2 (en) | 2005-09-26 | 2006-09-12 | Instrument for endoscopic treatment |
KR1020137000530A KR101278556B1 (ko) | 2005-09-26 | 2006-09-12 | 내시경용 처치구 |
EP12197490.1A EP2572666B1 (en) | 2005-09-26 | 2006-09-12 | Instrument for endoscopic treatment |
KR1020087007289A KR101278555B1 (ko) | 2005-09-26 | 2006-09-12 | 내시경용 처치구 |
CN2006800353539A CN101272744B (zh) | 2005-09-26 | 2006-09-12 | 内窥镜用处置工具 |
EP12197488.5A EP2572667B1 (en) | 2005-09-26 | 2006-09-12 | Instrument for endoscopic treatment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005278473 | 2005-09-26 | ||
JP2005-278473 | 2005-09-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007034708A1 true WO2007034708A1 (ja) | 2007-03-29 |
Family
ID=37888759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/318032 WO2007034708A1 (ja) | 2005-09-26 | 2006-09-12 | 内視鏡用処置具 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9220560B2 (ja) |
EP (3) | EP2572667B1 (ja) |
JP (1) | JP4794564B2 (ja) |
KR (2) | KR101278556B1 (ja) |
CN (3) | CN101810511B (ja) |
WO (1) | WO2007034708A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2168516A1 (en) | 2008-09-30 | 2010-03-31 | Jichi Medical University | Treatment instrument for endoscope |
JP2014004333A (ja) * | 2012-06-26 | 2014-01-16 | Taewoong Medical Co Ltd | 高周波処置装置 |
WO2015045431A1 (ja) * | 2013-09-27 | 2015-04-02 | オリンパスメディカルシステムズ株式会社 | プローブユニット、処置具及び処置システム |
US9526517B2 (en) | 2013-09-27 | 2016-12-27 | Olympus Corporation | Probe, treatment device, and treatment system |
US10555749B2 (en) | 2013-09-27 | 2020-02-11 | Olympus Corporation | Probe unit, treatment instrument, and treatment system |
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EP2453807A4 (en) * | 2009-07-17 | 2017-06-21 | Richard B. North | Shaped electrode and dissecting tool |
EP2380482A1 (en) * | 2010-04-21 | 2011-10-26 | Koninklijke Philips Electronics N.V. | Extending image information |
KR101056698B1 (ko) * | 2011-02-22 | 2011-08-12 | 정명준 | 복수개의 모드를 멀티시술모듈을 통해 하나의 장치로 동작시키는 내시경하 점막하층 멀티용 시술기구 |
WO2012114333A1 (en) | 2011-02-24 | 2012-08-30 | Ilan Ben Oren | Hybrid catheter for vascular intervention |
CN102138824B (zh) * | 2011-04-29 | 2012-10-10 | 田成龙 | 腹腔镜用多功能操作器 |
US9526570B2 (en) * | 2012-10-04 | 2016-12-27 | Cook Medical Technologies Llc | Tissue cutting cap |
KR101479686B1 (ko) * | 2012-10-18 | 2015-01-07 | 국립암센터 | 의료용 수술 기구 |
TWI482609B (zh) * | 2012-12-19 | 2015-05-01 | Metal Ind Res & Dev Ct | 內視鏡操控裝置 |
US10398461B2 (en) * | 2013-11-08 | 2019-09-03 | The Cleveland Clinic Foundation | Excising endocap |
WO2017191644A1 (en) | 2016-05-05 | 2017-11-09 | Eximo Medical Ltd | Apparatus and methods for resecting and/or ablating an undesired tissue |
US10293061B2 (en) * | 2016-12-06 | 2019-05-21 | Shiu Kum LAM | Two-endoscope technique of endoscopic mucosal resection and kit with a set of endoscopes for the method |
CN113453605B (zh) * | 2018-12-27 | 2024-07-16 | 奥林巴斯株式会社 | 电极单元及内窥镜系统 |
US12038322B2 (en) | 2022-06-21 | 2024-07-16 | Eximo Medical Ltd. | Devices and methods for testing ablation systems |
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- 2006-09-12 CN CN2010101433149A patent/CN101810511B/zh active Active
- 2006-09-12 EP EP12197490.1A patent/EP2572666B1/en active Active
- 2006-09-12 JP JP2007536455A patent/JP4794564B2/ja active Active
- 2006-09-12 WO PCT/JP2006/318032 patent/WO2007034708A1/ja active Application Filing
- 2006-09-12 KR KR1020137000530A patent/KR101278556B1/ko active IP Right Grant
- 2006-09-12 CN CN2006800353539A patent/CN101272744B/zh active Active
- 2006-09-12 KR KR1020087007289A patent/KR101278555B1/ko active IP Right Grant
- 2006-09-12 EP EP06797839.5A patent/EP1943972B1/en active Active
- 2006-09-12 CN CN2010101433134A patent/CN101803949B/zh active Active
- 2006-09-12 US US11/992,515 patent/US9220560B2/en active Active
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2168516A1 (en) | 2008-09-30 | 2010-03-31 | Jichi Medical University | Treatment instrument for endoscope |
JP2010104776A (ja) * | 2008-09-30 | 2010-05-13 | Jichi Medical Univ | 内視鏡用処置具 |
US8425510B2 (en) | 2008-09-30 | 2013-04-23 | Jichi Medical University | Treatment instrument for endoscope including a sheath having a tapered portion at a distal end portion thereof |
JP2014004333A (ja) * | 2012-06-26 | 2014-01-16 | Taewoong Medical Co Ltd | 高周波処置装置 |
WO2015045431A1 (ja) * | 2013-09-27 | 2015-04-02 | オリンパスメディカルシステムズ株式会社 | プローブユニット、処置具及び処置システム |
US9526517B2 (en) | 2013-09-27 | 2016-12-27 | Olympus Corporation | Probe, treatment device, and treatment system |
US10555749B2 (en) | 2013-09-27 | 2020-02-11 | Olympus Corporation | Probe unit, treatment instrument, and treatment system |
Also Published As
Publication number | Publication date |
---|---|
EP2572667B1 (en) | 2018-12-12 |
KR20130018373A (ko) | 2013-02-20 |
EP2572667A1 (en) | 2013-03-27 |
EP2572666A1 (en) | 2013-03-27 |
US9220560B2 (en) | 2015-12-29 |
US20090247823A1 (en) | 2009-10-01 |
CN101272744A (zh) | 2008-09-24 |
CN101272744B (zh) | 2010-08-25 |
KR20080060229A (ko) | 2008-07-01 |
EP1943972A1 (en) | 2008-07-16 |
JP4794564B2 (ja) | 2011-10-19 |
CN101810511B (zh) | 2012-05-09 |
EP1943972B1 (en) | 2018-03-07 |
JPWO2007034708A1 (ja) | 2009-03-19 |
CN101803949A (zh) | 2010-08-18 |
KR101278556B1 (ko) | 2013-06-25 |
EP1943972A4 (en) | 2013-03-06 |
CN101803949B (zh) | 2011-11-09 |
KR101278555B1 (ko) | 2013-06-25 |
CN101810511A (zh) | 2010-08-25 |
EP2572666B1 (en) | 2018-11-07 |
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