WO2014156221A1 - 医療器具及び医療システム - Google Patents
医療器具及び医療システム Download PDFInfo
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- WO2014156221A1 WO2014156221A1 PCT/JP2014/050414 JP2014050414W WO2014156221A1 WO 2014156221 A1 WO2014156221 A1 WO 2014156221A1 JP 2014050414 W JP2014050414 W JP 2014050414W WO 2014156221 A1 WO2014156221 A1 WO 2014156221A1
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- Prior art keywords
- treatment
- unit
- wire
- flexible spring
- distal end
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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
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00098—Deflecting means for inserted tools
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B34/71—Manipulators operated by drive cable mechanisms
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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
- A61B1/00131—Accessories for endoscopes
- A61B1/00133—Drive units for endoscopic tools inserted through or with the endoscope
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- 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
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
- A61B2017/00318—Steering mechanisms
- A61B2017/00323—Cables or rods
- A61B2017/00327—Cables or rods with actuating members moving in opposite directions
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- 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
- A61B2018/00577—Ablation
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- A61B2018/00601—Cutting
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- A61B2018/00982—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
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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
- A61B18/14—Probes or electrodes therefor
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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
- A61B18/14—Probes or electrodes therefor
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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
- A61B18/14—Probes or electrodes therefor
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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
- 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 medical instrument and a medical system.
- This application claims priority based on provisional application 61 / 806,101 filed in the United States on March 28, 2013, the contents of which are incorporated herein by reference.
- a medical instrument in the field of medical instruments used together with endoscopes, a medical instrument is provided with a storage part in which a treatment part for treating a treatment target site is housed for the purpose of protecting the inner surface of the endoscope channel. It is known (see, for example, Patent Document 1).
- a medical instrument may have a needle-like, rod-like, or hook-like electrode that protrudes toward the distal end, or forceps that protrude toward the distal end, as a treatment portion.
- this medical device When this medical device is inserted into a channel of a manipulator such as an endoscope, the inner surface of the channel may be damaged or may interfere with the inner surface of the channel and may not pass through the channel smoothly.
- a cover member outside an electrode, forceps, or the like, or to provide a medical instrument with a mechanism for drawing the electrode, forceps, or the like inside the cover member.
- the cover member when a cover member is provided, the cover member covers electrodes, forceps, and the like, so that the outer diameter tends to increase.
- a mechanism for moving the cover member with respect to the electrode, forceps, or the like needs to be provided separately in the medical instrument.
- An object of the present invention is to reduce the size of a medical instrument including a mechanism for changing the orientation and posture of a treatment section and a mechanism for storing the treatment section.
- the medical instrument includes an insertion portion that can be inserted into the body, and a drive mechanism coupled to the insertion portion.
- the insertion portion is connected to the treatment portion that performs a treatment on a treatment target portion, a joint portion that supports the treatment portion and is capable of changing the orientation of the treatment portion, and the treatment portion.
- a driving force transmission unit configured to transmit a driving force for changing a direction of the unit to the joint unit.
- the driving mechanism includes a driving force generation unit that is connected to the driving force transmission unit and configured to generate the driving force.
- a storage portion configured to store the treatment portion in the joint portion is formed in the joint portion by the driving force transmitted from the driving force generation portion to the joint portion via the driving force transmission portion.
- the joint portion is configured to be bent so as to change the direction of the treatment portion and has a substantially cylindrical shape.
- the driving force transmission unit may include a plurality of linear members provided corresponding to a bending direction in the bending operation of the joint unit and fixed to the distal end of the flexible spring unit.
- the flexible spring portion may be curved by pulling at least one of the plurality of linear members. When at least two of the plurality of linear members are evenly pulled or pressed so that the tip of the flexible spring portion moves forward or backward along the central axis direction of the flexible spring portion,
- the storage portion may be formed near the tip of the flexible spring portion.
- the medical device may further include a cladding tube portion covering an outer surface of the flexible spring portion.
- the storage portion may be formed in the cladding tube portion by a distal end of the flexible spring portion being retracted toward the proximal end side by the plurality of linear members.
- the treatment portion may be inserted into the flexible spring portion.
- the storage portion may be formed in the flexible spring portion by advancing the distal end of the flexible spring portion toward the distal end side by the plurality of linear members.
- the treatment section cuts a living tissue upon receiving a supply of a high-frequency current.
- the incision electrode may be provided.
- the joint portion may include a switching mechanism configured to switch an energization state of the high-frequency current to the incision electrode.
- the insertion portion may include a power feeding cable that is connected to the switching mechanism and configured to pass the high-frequency current.
- the drive mechanism may include a plug configured to be connected to the power supply cable and connectable to a high frequency power supply device. The switching mechanism shuts off the power supply between the power supply cable and the incision electrode when the incision electrode is located in the housing portion, and the power supply cable when the incision electrode is located outside the housing portion.
- the cutting electrode may be electrically connected.
- a medical system includes a medical instrument according to any one of the first to fifth aspects, and a master configured to accept an operation input from an operator.
- a manipulator, a control unit connected to the master manipulator, a slave manipulator connected to the control unit and connected to the drive mechanism, and the control unit, and the treatment unit is in the storage unit
- a determination unit configured to determine a state and a state in which the treatment unit is outside the storage unit.
- the medical instrument includes a switch mechanism configured to cause the determination unit to determine a state in which the treatment unit is positioned in the storage unit and a state in which the treatment unit is positioned outside the storage unit. Have.
- a mechanism for optimizing the orientation and posture of the treatment section and a mechanism for moving the treatment section to store the treatment section in the storage section can be used. For this reason, a medical instrument can be reduced in size compared with the case where a medical instrument is separately provided with the mechanism specialized in accommodating a treatment part.
- FIG. 1 is a schematic view showing a medical instrument according to the first embodiment of the present invention.
- FIG. 2 is a schematic view showing a state in which the medical instrument is attached to an endoscope.
- FIG. 3 is an enlarged partial cross-sectional view of the distal end portion of the medical device.
- FIG. 4 is a partial cross-sectional view showing an enlarged distal end portion of the medical device.
- 5 to 7 are diagrams for explaining the operation of the medical instrument.
- the medical instrument 1 includes an insertion portion 2 that can be inserted into the body, and a drive mechanism 30 connected to the insertion portion 2.
- the insertion part 2 has an elongated shape.
- the insertion section 2 can be inserted into the channel 101 or the like in an endoscope 100 (see FIG. 2) or other known manipulator.
- the insertion portion 2 includes a treatment portion 3, a joint portion 10, a flexible tube portion 20, a driving force transmission portion 21, and a power feeding cable 26.
- the side where the treatment part 3 of the insertion part 2 is provided is referred to as a distal end, and the side opposite to the side where the treatment part 3 is provided is referred to as a proximal end. .
- the treatment unit 3 performs a treatment on the treatment target site.
- the treatment unit 3 according to the present embodiment includes an incision electrode 4 that incises a living tissue by receiving a high-frequency current.
- the incision electrode 4 has a rod-shaped shaft portion 6 and a hook portion 5 provided at the tip of the shaft portion 6.
- the shaft portion 6 and the hook portion 5 are made of a conductive metal wire.
- the metal wire to be the cutting electrode 4 has a shape bent at the boundary portion between the shaft portion 6 and the hook portion 5.
- the shaft portion 6 may be provided with an insulating film that covers the outer surface of the metal wire.
- the hook portion 5 of the incision electrode 4 may be formed in an arc shape, for example.
- the incision electrode 4 may not have the hook portion 5.
- the joint portion 10 includes a cladding tube portion 11, a bending tube 12, and a switching mechanism 16.
- the cladding tube portion 11 is formed by extending a flexible cylindrical member constituting the flexible tube portion 20 toward the distal end side.
- the bending tube 12 is disposed in the cladding tube portion 11 and supports the cutting electrode 4.
- the switching mechanism 16 switches the energization state of the high-frequency current to the incision electrode 4.
- a stopper 11 a and a terminal 17 are provided at the tip of the cladding tube portion 11.
- the stopper 11 a regulates the position of the distal end of the bending tube 12.
- the terminal 17 is connected to a power feeding cable 26 for energizing a high-frequency current and constitutes a part of the switching mechanism 16.
- the stopper 11a can contact the tip of the bending tube 12.
- the stopper 11 a regulates the movement of the distal end portion of the bending tube 12 so that the distal end of the bending tube 12 does not protrude from the distal end of the cladding tube portion 11.
- the curved tube 12 has a substantially cylindrical shape.
- the bending tube 12 includes a distal end support portion 13, a flexible spring portion 14, and a proximal end support portion 15.
- the distal end support portion 13, the flexible spring portion 14, and the proximal end support portion 15 are arranged in this order from the distal end to the proximal end.
- the distal end support portion 13 is fixed to the proximal end of the shaft portion 6 of the incision electrode 4.
- a distal end of a first wire (linear member) 24 and a distal end of a second wire (linear member) 25, which will be described later, are fixed to the distal end support portion 13, respectively.
- the tip support part 13 has a cylindrical outer surface. A clearance is formed between the outer surface of the tip support portion 13 and the inner surface of the cladding tube portion 11 so that the tip support portion 13 can slide with respect to the cladding tube portion 11.
- a terminal 18 is provided on the tip-side surface of the tip support portion 13. The terminal 18 constitutes a part of the switching mechanism 16.
- the terminal 18 is made of a conductor and is electrically connected to the cutting electrode 4.
- the flexible spring portion 14 is an elastic member having a spiral shape.
- the flexible spring portion 14 has a substantially cylindrical shape.
- the flexible spring portion 14 is spirally wound from the distal end to the proximal end along the inner surface of the cladding tube portion 11 inside the cladding tube portion 11.
- a through hole 14 a and a through hole 14 b are formed at positions facing the radial direction in the flexible spring portion 14.
- a first wire 24 is inserted through the through hole 14a.
- the second wire 25 is inserted through the through hole 14b.
- a further wire for bending the joint portion 10 may be provided in the medical device 1.
- through holes may be formed in the flexible spring portion 14 at different positions.
- the proximal end support portion 15 is fixed to the inner surface of the cladding tube portion 11.
- the proximal end support portion 15 is provided to bias the flexible spring portion 14 toward the distal end side.
- the base end support 15 has a through hole (not shown) through which the first wire 24 is inserted and a through hole (not shown) through which the second wire 25 is inserted at positions radially opposed to the base end support 15. Are formed).
- the proximal end support portion 15 is fixed to the inner surface of the cladding tube portion 11.
- the flexible spring portion 14 biases the distal end support portion 13 toward the distal end side.
- the distal end of the distal end support portion 13 urged toward the distal end side by the flexible spring portion 14 comes into contact with the stopper 11 a of the cladding tube portion 11.
- the tip support portion 13 is in contact with the stopper 11a
- the terminal 17 and the terminal 18 of the switching mechanism 16 are in contact with each other.
- the distal end support portion 13 is separated from the stopper 11a toward the proximal end side, the contact between the terminal 17 and the terminal 18 of the switching mechanism 16 is released (see FIG. 4).
- the inside of the cladding tube portion 11 is a storage portion 19 for storing the incision electrode 4 of the treatment portion 3. That is, in the inside of the cladding tube portion 11, the distal end support portion 13 moves to the proximal end side, whereby a storage portion 19 for storing the incision electrode 4 is formed in the cladding tube portion 11.
- the amount of the cutting electrode 4 drawn into the storage unit 19 is set to such an extent that the cutting electrode 4 does not interfere with the inner surface of the channel 101.
- the joint portion 10 may be configured such that the incision electrode 4 is completely drawn into the storage portion 19.
- the flexible tube portion 20 shown in FIG. 1 is a flexible cylindrical member.
- a first wire 24 and a second wire 25 and a power supply cable 26 constituting the driving force transmission unit 21 are inserted into the flexible tube unit 20.
- the driving force transmission unit 21 includes a first wire 24 and a second wire 25.
- the distal end of the first wire 24 is fixed to the distal end support portion 13.
- the distal end of the second wire 25 is fixed to the distal end support portion 13.
- first wire 24 a linear member made of a known material such as stainless steel or resin may be appropriately employed.
- the first wire 24 is not limited to a so-called wire, and may be a cable, for example.
- second wire 25 a wire made of a known material such as stainless steel or resin may be appropriately employed.
- the first wire 24 and the second wire 25 may be made of the same material, or may be made of different materials.
- the second wire 25 is not limited to a so-called wire, and may be a cable, for example.
- the proximal end of the first wire 24 and the proximal end of the second wire 25 are drawn into the drive mechanism 30 through the flexible tube portion 20 of the insertion portion 2.
- the proximal end of the first wire 24 and the proximal end of the second wire 25 are connected to the driving force generator 32.
- the driving force generator 32 generates driving force for moving the first wire 24 and the second wire 25 in the direction of their center lines.
- the driving force generated by the driving force generator 32 is a driving force that bends the joint portion 10 in order to change the direction of the treatment portion 3, and the incision electrode 4 of the treatment portion 3 is accommodated in the storage portion. It is also a driving force for pulling it into 19.
- the distal end of the power feeding cable 26 is connected to a terminal 17 disposed at the distal end of the cladding tube part 11.
- the proximal end of the power supply cable 26 is fixed to a plug 35 described later in the drive mechanism 30.
- the drive mechanism 30 includes a base 31, a drive force generator 32, and a plug 35.
- the driving force generator 32 has a first actuator 33 and a second actuator 34.
- the first actuator 33 generates a driving force that pulls the first wire 24.
- the second actuator 34 generates a driving force that pulls the second wire 25.
- Specific configurations of the first actuator 33 and the second actuator 34 are not limited as long as appropriate traction force can be transmitted to the first wire 24 and the second wire 25.
- the first actuator 33 and the second actuator 34 can be operated independently of each other. That is, the first actuator 33 can pull the first wire 24, and the second actuator 34 can release the pulling force on the second wire 25 so that the second wire 25 can freely operate. Further, the first actuator 33 can release the pulling force with respect to the first wire 24 so that the first wire 24 can freely operate, and the second actuator 34 can pull the second wire 25.
- the first wire 24 and the second wire 25 can be pulled simultaneously by the first actuator 33 and the second actuator 34.
- the first actuator 33 and the second actuator 34 pull the first wire 24 and the second wire 25 by converting the driving force of the motor into a linear movement by rack and pinion.
- a mechanism or a mechanism having a pulley around which the first wire 24 and the second wire 25 are wound and rotating these pulleys using a motor may be used.
- the plug 35 is made of a conductor and can be connected to a known high-frequency power supply device.
- the plug 35 is connected to the proximal end of the power supply cable 26.
- the medical instrument 1 is inserted into a channel 101 provided in a manipulator such as the endoscope 100 shown in FIG.
- the channel 101 is provided to guide forceps and other instruments to a treatment target site.
- the first wire 24 and the second wire 25 are pulled by the driving force generator 32 so that the treatment unit 3 moves into the storage unit 19.
- the first actuator 33 and the second actuator 34 simultaneously pull the first wire 24 and the second wire 25 to the proximal end side.
- the distal end support portion 13 moves toward the proximal end side so as to be translated along the central axis of the cladding tube portion 11. Accordingly, the distal end support portion 13 moves relative to the cladding tube portion 11 toward the proximal end without being locked to the cladding tube portion 11.
- the flexible spring portion 14 contracts, and a storage portion 19 for storing the incision electrode 4 in the cladding tube portion 11 is formed in the cladding tube portion 11. For this reason, when the channel 101 is curved, the treatment unit 3 is unlikely to interfere with the inner surface of the channel 101, and the treatment unit 3 is less likely to damage the inner surface of the channel 101.
- the treatment unit 3 In a state where the treatment unit 3 is stored in the storage unit 19, the treatment unit 3 is guided to the vicinity of the treatment target site.
- the treatment unit 3 is moved out of the storage unit 19
- the first wire 24 and the second wire 25 are pulled by the first actuator 33 and the second actuator 34. Is released.
- the flexible spring portion 14 in the contracted state is extended, and the cutting electrode 4 is fed out from the tip of the cladding tube portion 11.
- the terminal 17 and the terminal 18 come into contact with each other and become conductive. As a result, a high-frequency current can be supplied to the incision electrode 4.
- the direction and posture of the incision electrode 4 can be changed by bending the joint portion 10.
- the bending operation of the joint unit 10 is performed by the operations of the first actuator 33 and the second actuator 34.
- the distal end support portion 13 When either one of the first wire 24 and the second wire 25 is pulled to the proximal end side, the distal end support portion 13 is slightly inclined and is locked to the inner surface of the cladding tube portion 11 by friction. Is done. This frictional force acts on the distal end support portion 13 and the cladding tube portion 11 so as to suppress the distal end support portion 13 from moving relative to the cladding tube portion 11 toward the proximal end side of the cladding tube portion 11. Thereby, the cladding tube part 11 is bent according to the bending operation of the flexible spring part 14. Thereby, the joint part 10 curves as a whole.
- the other of the first actuator 33 and the second actuator 34 When only one of the first actuator 33 and the second actuator 34 is pulling, the other of the first actuator 33 and the second actuator 34 is connected to the other wire. May be pressed toward the tip side. In this case, the joint portion 10 can be easily bent regardless of the magnitude of friction between the tip support portion 13 and the inner surface of the cladding tube portion 11. However, when the first wire 24 and the second wire 25 have a flexible configuration that is easily buckled by pressing, the first actuator 33 and the second actuator 34 move the first wire 24 and the second wire 25 to the distal end side. It may be better not to press.
- a high frequency current is supplied to the incision electrode 4 of the treatment section 3 through the power supply cable 26, so that the treatment target site can be incised.
- the treatment unit 3 is pulled by pulling both the first wire 24 and the second wire 25 toward the proximal end side. Is stored in the storage unit 19 again. Thereby, the medical instrument 1 can be extracted from the channel 101 without the treatment section 3 coming into contact with the inner surface of the channel 101.
- the joint portion 10 bends.
- the storage portion 19 is formed in the covering tube portion 11 of the joint portion 10, and the incision electrode 4 is stored in the storage portion 19. That is, according to the medical instrument 1 according to the present embodiment, the mechanism for optimizing the orientation and posture of the treatment unit 3 when the treatment unit 3 is treated using the treatment unit 3 and the treatment unit 3 are stored. It can also be used as a mechanism for moving the treatment section 3 for storage in the section 19. Therefore, the medical instrument 1 can be reduced in size as compared with a medical instrument that additionally includes a configuration specialized for housing the treatment section 3. Thereby, the insertion part 2 of the medical instrument 1 can be easily passed through the channel 101 in a curved state.
- the medical instrument 1 has a configuration in which the storage portion 19 is formed in a part of the bending joint portion 10. For this reason, compared with the case where the cover member etc. for accommodating the treatment part 3 are provided in the front-end
- FIG. 8 is a schematic side view showing an enlarged distal end portion of the medical device according to the second embodiment of the present invention.
- 9 and 10 are views for explaining the operation of the medical device.
- the medical instrument 1A has an expandable tube portion 40 having a structure different from that of the flexible tube portion 20 instead of the flexible tube portion 20 described in the first embodiment. is doing.
- the telescopic tube portion 40 has a substantially cylindrical shape.
- the telescopic tube part 40 has a distal end support part 41, a flexible spring part 42, and a proximal end support part 43.
- a distal end support portion 41, a flexible spring portion 42, and a proximal end support portion 43 are arranged in this order from the distal end to the proximal end.
- the tip support portion 41 has a cylindrical shape.
- the tip support portion 41 has a space in which the incision electrode 4 can be inserted.
- the terminal 17 of the switching mechanism 16 described in the first embodiment is disposed on the inner surface of the tip support portion 41.
- the tip support portion 41 has a stopper 41a that engages with the tip of a shaft extension 45 described later.
- the stopper 41 a maintains the state where the terminal 17 and the terminal 18 of the switching mechanism 16 are in contact with each other when the tip support portion 41 is engaged with the shaft extension portion 45.
- the distal end of the first wire 24 and the distal end of the second wire 25 are fixed to the distal end support portion 41.
- the flexible spring portion 42 is an elastic member having a spiral shape.
- the flexible spring portion 42 is spirally wound from the distal end to the proximal end.
- a through hole through which the first wire 24 and the second wire 25 are inserted is formed in the same manner as in the first embodiment.
- the flexible spring portion 42 includes a soft spring portion 42a disposed on the distal end side and a hard spring portion 42b disposed on the proximal end side.
- the soft spring portion 42a is a spring material.
- the wires (element wires) constituting the soft spring portion 42a are separated from each other.
- the soft spring portion 42a is configured such that the strands are brought into close contact with each other when the first wire 24 and the second wire 25 are simultaneously pulled toward the proximal end side.
- the hard spring portion 42b is a spring material.
- the rigid spring portion 42b is configured such that there is a gap between the strands constituting the rigid spring portion 42b even when the strands of the flexible spring portion 42a are in close contact with each other.
- the spring constant of the rigid spring portion 42b is larger than the spring constant of the soft spring portion 42a.
- the proximal end support portion 43 is fixed to the distal end of the flexible tube portion 20.
- the proximal end support portion 43 is provided with a holding portion 44 that holds the shaft portion 6 of the incision electrode 4 of the treatment portion 3.
- the holding part 44 has a shaft extension part 45 and a spring part 46.
- the shaft extension 45 is connected to the proximal end of the shaft 6 of the cutting electrode 4.
- the spring part 46 connects the base end of the shaft extension part 45 and the base end support part 43.
- a terminal 18 of the switching mechanism 16 is disposed on the outer peripheral surface at the tip of the shaft extension 45. Thereby, when the terminal 17 and the terminal 18 of the switching mechanism 16 are in contact, a high-frequency current can be supplied to the incision electrode 4 through the power supply cable 26.
- the spring portion 46 urges the shaft extension portion 45 toward the distal end side with respect to the proximal end support portion 43 so as to keep the contact between the terminal 17 and the terminal 18.
- the attachment / detachment mechanism (not shown) that maintains the terminal 17 and the terminal 18 in contact with each other may be provided in the medical instrument 1A according to the present embodiment.
- This attachment / detachment mechanism may be configured to separate the terminal 17 and the terminal 18 by the spring force of the soft spring portion 42a.
- the first wire 24 and the second wire 25 are simultaneously pulled to the proximal end side.
- the flexible spring part 42 is contracted (see FIG. 9).
- the flexible spring part 42a that is easily contracted contracts first, so that the strands constituting the soft spring part 42a are brought into close contact with each other. It is not essential that the soft spring portion 42a is in close contact.
- the incision electrode 4 is extended from the tip of the tip support portion 41. Since the terminal 18 disposed on the shaft extension portion 45 contacts the terminal 17 disposed on the tip support portion 41, a high frequency current can be supplied to the cutting electrode 4.
- the rigid spring portion 42b is curved. At this time, the soft spring portion 42a may be bent together with the hard spring portion 42b.
- the storage portion 47 that stores the incision electrode 4 is formed by the flexible spring portion 42 and the first wire 24 and the second wire 25 that bend the flexible spring portion 42, and the telescopic tube portion. 40 can be formed.
- a mechanism for optimizing the orientation and posture of the treatment section 3 and a mechanism for storing the treatment section 3 in the storage section 47 are combined when the treatment section 3 is treated using the treatment section 3. can do. Therefore, the medical instrument 1A can be reduced in size as compared with a medical instrument that is separately provided with a configuration specialized for housing the treatment unit 3. Thereby, the insertion part 2 of the medical instrument 1A can be easily passed through the channel 101 in a curved state.
- FIG. 11 is a schematic overall view of a medical system according to the third embodiment of the present invention.
- FIG. 12 is a schematic partial cross-sectional view of a medical instrument according to a third embodiment of the present invention provided in the medical system.
- FIG. 13 is a diagram for explaining the operation of the medical system.
- the medical system 150 includes a manipulator device 110 and a medical instrument 1B.
- the manipulator device 110 is configured such that an operator Op who performs an operation on a patient performs an operation on the patient.
- the medical instrument 1B is attached to the manipulator device 110.
- the manipulator device 110 includes a slave manipulator 111, a master manipulator 115, and a control unit 120.
- the slave manipulator 111 is attached with the medical instrument 1B.
- the master manipulator 115 is electrically connected to the slave manipulator 111 and issues an operation command to the slave manipulator 111.
- the control unit 120 controls the entire medical system 150.
- the slave manipulator 111 has a slave arm 112, an actuator (not shown), and a sensor (not shown).
- the slave arm 112 is attached with at least the above-described medical instrument 1B.
- the actuator operates the slave arm 112.
- the sensor detects the position of the slave arm 112.
- Slave manipulator 111 receives an operation command from master manipulator 115.
- the slave manipulator 111 operates the slave arm 112 and the medical instrument 1B according to the operation command. That is, in the present embodiment, the slave manipulator 111 is connected to at least the driving force generator 32 of the medical instrument 1B.
- the slave manipulator 111 can operate the driving force generator 32 in response to an operation command from the master manipulator 115.
- the slave arm 112 has a soft long shaft member 113 inserted into the body.
- the long shaft member 113 is formed with a channel 101A (see FIG. 13) through which the insertion portion 2 of the medical instrument 1B is passed.
- An imaging mechanism (not shown) for observing the treatment target site is provided at the distal end of the long axis member 113 of the slave arm 112. This imaging mechanism acquires an image of a treatment target region.
- the master manipulator 115 has a master arm 116 and a display unit 117.
- the master arm 116 is configured to operate the medical instrument 1B when the operator Op holds it in his hand and moves it.
- the display unit 117 displays an image acquired by the imaging mechanism provided on the long axis member 113 of the slave arm 112.
- the master manipulator 115 according to the present embodiment includes a storage state control switch 118 that issues a trigger signal to the control unit 120.
- the trigger signal is used to store the treatment unit 3 in the medical instrument 1B in the storage unit 19 or to feed the treatment unit 3 out of the storage unit 19.
- the control unit 120 outputs to the slave manipulator 111 a signal for operating the slave manipulator 111 based on an operation command and a trigger signal issued from the master manipulator 115 when the master arm 116 is operated in the master manipulator 115.
- the control unit 120 outputs a signal for operating the driving force generation unit 32 of the medical instrument 1B.
- the control unit 120 includes a determination unit 121 that determines a state in which the treatment unit 3 is in the storage unit 19 and a state in which the treatment unit 3 is outside the storage unit 19.
- the medical instrument 1B has a signal line 51 for detecting conduction between the terminal 17 and the terminal 18 of the switching mechanism 16.
- the tip of the signal line 51 is connected to the terminal 18 of the switching mechanism 16.
- the base end of the signal line 51 is connected to the determination unit 121.
- the power supply cable 26 can be electrically connected to the determination unit 121. That is, in the present embodiment, when the terminal 17 and the terminal 18 of the switching mechanism 16 are conductive, the power supply cable 26 and the signal line 51 are conductive. When the terminal 17 and the terminal 18 of the switching mechanism 16 are separated from each other, the power feeding cable 26 and the signal line 51 are insulated. That is, in the present embodiment, a switch unit (switch mechanism) 50 including the power supply cable 26, the terminal 17, the terminal 18, and the signal line 51 is provided in the medical instrument 1B.
- the driving force generator 32 (see FIG. 1) of the medical instrument 1B is connected to the controller 120 of the manipulator device 110.
- the driving force generator 32 corresponds to an operation command based on an operation input from the master arm 116 and corresponds to a trigger signal issued from the storage state control switch 118 of the master manipulator 115 and the first wire 24 and the second wire 24.
- the two wires 25 are configured to be pulled.
- the insertion / extraction of the treatment unit 3 with respect to the storage unit 19 is started based on a trigger signal generated from the storage state control switch 118 when the storage state control switch 118 of the master manipulator 115 is pushed by the operator Op.
- the determination unit 121 detects whether the terminal 17 and the terminal 18 of the switching mechanism 16 are conducted. That is, in the determination unit 121, the terminal 17 and the terminal 18 are electrically connected (that is, the treatment unit 3 is outside the storage unit 19, see FIG. 12), and the terminal 17 and the terminal 18 are not electrically connected. (That is, the state in which the treatment unit 3 is in the storage unit 19, see FIG. 13).
- the determination unit 121 returns to the control unit 120 that the treatment unit 3 is out of the storage unit 19 and the treatment target region is ready for treatment. If the terminal 17 and the terminal 18 are not electrically connected, the determination unit 121 returns to the control unit 120 that the treatment unit 3 is stored in the storage unit 19 and treatment is not possible.
- the determination unit 121 is configured to return to the control unit 120 that the treatment unit 3 is stored in the storage unit 19 and the medical instrument 1B can be replaced when the terminal 17 and the terminal 18 are not conductive. May be.
- the control unit 120 causes the display unit 117 to display a status indicating that the operation input using the master arm 116 of the master manipulator 115 is possible based on the determination result in the determination unit 121 if the treatment is possible.
- the control unit 120 transmits the operation of the master arm 116 of the master manipulator 115 to the slave manipulator 111 as an operation command for the slave manipulator 111.
- the control unit 120 performs an operation using the master arm 116 of the master manipulator 115 on the display unit 117 when treatment is not possible or the medical instrument 1B is replaceable. The status that the input is impossible and the medical device 1B can be replaced is displayed.
- the control unit 120 invalidates the operation command based on the operation of the master arm 116 of the master manipulator 115.
- the operator Op of the medical system 150 for example, manually performs the medical instrument 1B, which is similar to the medical instrument 1B according to the present embodiment, but has a different configuration of the treatment unit 3, for example, or the medical instrument according to the present embodiment.
- the instrument 1B can be replaced with a spare one.
- the medical system 150 can switch between a treatment mode in which a treatment using the treatment unit 3 is possible and a device exchange mode in which a medical device can be exchanged.
- the treatment section 3 is stored in the storage section 19.
- the treatment unit 3 of the medical instrument 1B is drawn out from the storage unit 19 by the operator Op pressing the storage state control switch 118. It is. Thereby, the treatment using the treatment unit 3 is possible.
- the switch unit 50 of the medical instrument 1B can cause the determination unit 121 to determine whether or not the treatment unit 3 is outside the storage unit 19. Since the determination unit 121 determines whether the treatment unit 3 is stored in the storage unit 19 or whether the treatment unit 3 is outside the storage unit 19, the operator Op can obtain an image obtained by imaging the treatment target region. It is possible to reliably grasp that the treatment unit 3 is stored in the storage unit 19 without depending on the above.
- the treatment unit 3 can be taken in and out of the storage unit 19 using the master manipulator 115.
- a mechanism for optimizing the orientation and posture of the treatment section and a mechanism for moving the treatment section to store the treatment section in the storage section can be used. For this reason, a medical instrument can be reduced in size compared with the case where a medical instrument is separately provided with the mechanism specialized in accommodating a treatment part. Thereby, the insertion part of a medical device can be easily passed through the channel in a curved state.
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Abstract
Description
本発明の第1実施形態に係る医療器具(medical device)について説明する。図1は、本発明の第1実施形態に係る医療器具を示す模式図である。図2は、前記医療器具が内視鏡に取り付けられた状態を示す模式図である。図3は、前記医療器具の先端部分を拡大して示す部分断面図である。図4は、前記医療器具の先端部分を拡大して示す部分断面図である。図5から図7までは、前記医療器具の作用を説明するための図である。
次に、本発明の第2実施形態に係る医療器具について説明する。なお、以下では、既に説明された実施形態に記載された構成と同様の構成要素には同一の符号が付されており、重複する説明は省略されている。
次に、本発明の第3実施形態に係る医療システムについて説明する。
2 挿入部
3 処置部
10 関節部
19、47 収納部
21 駆動力伝達部
30 駆動機構
32 駆動力発生部
50 スイッチ部(スイッチ機構)
111 スレーブマニピュレータ
115 マスタマニピュレータ
120 制御部
121 判定部
Claims (6)
- 体内に挿入可能な挿入部と、
前記挿入部に連結された駆動機構と、
を備え、
前記挿入部は、
処置対象部位に対して処置を行う処置部と、
前記処置部を支持し、前記処置部の向きを変更可能に構成された関節部と、
前記関節部に接続され、前記処置部の向きを変更する駆動力を前記関節部に伝達するように構成された駆動力伝達部と、
を有し、
前記駆動機構は、前記駆動力伝達部に接続され前記駆動力を発生させるように構成された駆動力発生部を有し、
前記駆動力発生部から前記駆動力伝達部を介して前記関節部に伝達される前記駆動力によって、前記処置部を前記関節部内に収納するように構成された収納部が前記関節部に形成される
医療器具。 - 請求項1に記載の医療器具であって、
前記関節部は、前記処置部の向きを変えるように湾曲可能に構成され略円筒形状を有する可撓バネ部を有し、
前記駆動力伝達部は、前記関節部の湾曲動作における湾曲方向に対応して設けられ前記可撓バネ部の先端に固定された複数の線状部材を有し、
前記複数の線状部材のうちの少なくとも一つが牽引されることによって、前記可撓バネ部は湾曲し、
前記複数の線状部材のうちの少なくとも二つが、前記可撓バネ部の先端が前記可撓バネ部の中心軸線方向に沿って前進または後退するように均等に牽引または押圧されることにより、前記可撓バネ部の先端近傍に前記収納部が形成される
医療器具。 - 請求項2に記載の医療器具であって、
前記可撓バネ部の外面を覆う被覆管部をさらに備え、
前記収納部は、前記可撓バネ部の先端が前記複数の線状部材によって基端側へと後退されることで前記被覆管部内に形成される
医療器具。 - 請求項2に記載の医療器具であって、
前記可撓バネ部の内部に前記処置部が挿通されており、
前記収納部は、前記可撓バネ部の先端が前記複数の線状部材によって先端側へと前進されることで前記可撓バネ部内に形成される
医療器具。 - 請求項1から請求項4のうちのいずれか1項に記載の医療器具であって、
前記処置部は、高周波電流の供給を受けて生体組織を切開するように構成された切開電極を有し、
前記関節部は、前記切開電極に対する前記高周波電流の通電状態を切り替えるように構成されたスイッチング機構を有し、
前記挿入部は、前記スイッチング機構に接続され前記高周波電流が通電されるように構成された給電ケーブルを有し、
前記駆動機構は、前記給電ケーブルに接続され高周波電源装置に接続可能に構成されたプラグを有し、
前記スイッチング機構は、前記切開電極が前記収納部内に位置しているときには前記給電ケーブルと前記切開電極との通電を遮断し、前記切開電極が前記収納部外に位置しているときには前記給電ケーブルと前記切開電極とを導通させる
医療器具。 - 請求項1から請求項5のうちのいずれか1項に記載の医療器具と、
操作者からの操作入力を受け付けるように構成されたマスタマニピュレータと、
前記マスタマニピュレータに接続された制御部と、
前記制御部に接続されているとともに前記駆動機構に接続されたスレーブマニピュレータと、
前記制御部に設けられ、前記処置部が前記収納部内にある状態と前記処置部が収納部外にある状態とを判定するように構成された判定部と、
を備え、
前記医療器具は、
前記処置部が前記収納部内に位置している状態と、前記処置部が前記収納部外に位置している状態とを前記判定部に判定させるように構成されたスイッチ機構を有する
医療システム。
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JP2015508108A JP6116667B2 (ja) | 2013-03-28 | 2014-01-14 | 医療器具及び医療システム |
CN201480016571.2A CN105101899B (zh) | 2013-03-28 | 2014-01-14 | 医疗器具和医疗系统 |
US14/847,170 US20160128766A1 (en) | 2013-03-28 | 2015-09-08 | Medical instrument and medical system |
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- 2014-01-14 CN CN201480016571.2A patent/CN105101899B/zh active Active
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US11058503B2 (en) | 2017-05-11 | 2021-07-13 | Distalmotion Sa | Translational instrument interface for surgical robot and surgical robot systems comprising the same |
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US11844585B1 (en) | 2023-02-10 | 2023-12-19 | Distalmotion Sa | Surgical robotics systems and devices having a sterile restart, and methods thereof |
Also Published As
Publication number | Publication date |
---|---|
EP2979657A4 (en) | 2016-12-21 |
CN105101899B (zh) | 2017-07-14 |
EP2979657B1 (en) | 2018-07-04 |
JPWO2014156221A1 (ja) | 2017-02-16 |
JP6116667B2 (ja) | 2017-04-19 |
EP2979657A1 (en) | 2016-02-03 |
US20160128766A1 (en) | 2016-05-12 |
CN105101899A (zh) | 2015-11-25 |
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