Abstract: A unipolar electrosurgical electrode or probe that is configured for use in MIS electrosurgical procedures. The electrosurgical electrode comprises an elongated tubular member configured to cooperate with the small cannula of a mini-endoscope to reach interior tissue. The active end comprises a pair of jaws that can be normally closed and operative by the surgeon to open and close down on and grasp tissue to excise same. When energized, a unipolar discharge is generated at the working end of the electrode.

Abstract: The present invention provides systems and methods for selectively applying electrical energy to a target location within the head and neck of a patient's body, particularly including tissue in the ear, nose and throat. In one aspect, a method is provided for reducing the volume of enlarge swollen tissue in the patient's nose, such as swollen nasal tissue, mucus membranes, turbinates, polyps, neoplasms, cartilage (e.g., the nasal septum) or the like. In particular, the turbinates are treated by positioning one or more electrode terminal(s) adjacent to the turbinates, and delivering electrically conductive fluid, such as isotonic saline, to the nasal cavity to substantially surround the electrode terminal(s) with the fluid.

Abstract: An electrosurgical system and method for ablating, resecting, or cutting body structures, with minimal or no damage to tissue adjacent to the treatment site. The system includes an electrosurgical probe having a shaft with a shaft distal end bifurcated to provide first and second arms. First and second electrode supports are disposed on the first and second arms, respectively. At least one active electrode, in the form of a loop or partial loop, is arranged between the first and second electrode supports. A return electrode, also in the form of a loop or partial loop, is arranged between the first and second electrode supports distal to the active electrode. The active and return electrodes are configured to promote substantially high electric field intensities and associated high current densities between the active portion and the target site when a high frequency voltage is applied to the electrodes.

Abstract: A high-frequency cutting instrument for an endoscope is provided. The instrument is provided with a flexible sheath formed of insulating material, a high-frequency electrode placed to be exposed on a lateral part of the flexible sheath in the vicinity of a tip of the flexible sheath, and a conductive wire inserted into the flexible sheath and electrically connected to the high-frequency electrode. In this structure, the flexible sheath is separated into a distal sheath and a proximal sheath at a separating position along the flexible sheath. The distal sheath and the proximal sheath are connected together at the separating position to be rotatable relative to each other around an axis line of the flexible sheath. Further, the distal sheath is rotated relative to the proximal sheath around the axis line by rotating the conductive wire around the axis line at a proximal end of the proximal sheath.

Abstract: A system and method for performing an electrosurgical procedure are disclosed. The method includes obtaining information indicative of at least one physical characteristic of the patient and generating a reference voltage that is derived, at least in part, from the information. The reference voltage is coupled to a body of the electrosurgical apparatus, and the reference voltage is generated to a level so as to limit any difference between a voltage of the patient and a voltage of the body of the electrosurgical apparatus. In variations, the reference voltage is varied on an ongoing basis so as to adapt the reference voltage to one or more changing physical characteristics of the patient.

Abstract: An electrocautery device is disclosed. In accordance with one aspect of the invention, the electrocautery electrode/tip is provided with a hollow, conductive tube terminating at its distal end in a ball point type tip. Fluid, preferably conductive fluid, is applied to the proximal end of the hollow electrode/tip, and expelled from the distal end thereof during electrocautery. The ball point distal tip allows the distal tip to be directly applied to the tissue and “rolled” or slid along the tissue. This allows the distal tip to be moved across the tissue without dragging or snagging on the tissue. In addition, the conductive fluid expelled from the distal tip further lubricates the distal tip as it moves across the tissue. If conductive fluid is used, the conductive fluid emanating from the electrode/tip conducts the RF electrocautery energy away from the distal tip so that it is primarily the fluid, rather than the distal tip that actually accomplishes the cauterizing of tissue.

Abstract: In order to improve a surgical instrument having at least one tool comprising a carrier and at least one functional component adhesively bonded to the carrier, in such a way that the carrier can be easily and securely adhesively bonded to the functional component, whilst maintaining the desired function of the instrument, it is proposed that the carrier comprise a first contact surface, that the functional component comprise a second contact surface, and that the first contact surface bear on the second contact surface without any gap therebetween.

Abstract: A unitary dissector/harvester device for dissecting and harvesting a vessel has an elongated dissector tool for insertion into a body having the vessel to be harvested and a harvester tool axially positioned within the dissector tool.

Abstract: A ring dissector/harvester device for dissecting and harvesting a vessel has a capture tool that is co-axially positioned around the vessel to at least temporarily hold the vessel. A sealing tool is coaxially positioned within the capture tool and is axially movable with respect to the capture tool. The sealing tool and the capture tool are engaged to cauterize a branch from the vessel and to seal the cauterized branch and vessel.

Abstract: The present invention relates to an arthroscopy apparatus, comprising at least three elements selected from: a conventional arthroscopic lens (12), to which there is coupled a power supply device or capsule, in the inside of which is the power source (1), and a miniature camera (8), characterized by not comprising connecting cables.

Abstract: A high frequency treatment instrument for an endoscope is provided. The high frequency treatment instrument is provided with an insulative flexible sheath, an operation wire inserted in the flexible sheath so as to be movable along an axial direction of the operation wire in the flexible sheath, and a hook-like electrode attached to a tip of the operation wire. The hook-like electrode includes a rod-like part which is elongated in parallel with the axial direction along a line shifted from an axis line of the operation wire, and a hook part elongated from the rod-like part to cross the axis line of the operation wire.

Abstract: A medical device for simultaneously cutting tissue with a heating element, cauterizing the tissue with sealing elements, and stapling the tissue together. The heating elements comprise bipolar RF electrodes.

Abstract: A laparoscopic bipolar electrosurgical instrument for sealing tissue includes a handle having an elongated tube affixed thereto. The tube includes first and second jaw members having electrically conductive sealing surfaces attached to a distal end thereof which are movable from a first position for approximating tissue to a second position for grasping tissue therebetween. The handle includes a fixed handle and a handle which is movable relative to the fixed handle to effect movement of the jaw members from the first position to the second position for grasping tissue. The jaw members connect to a source of electrosurgical energy such that the opposable sealing surfaces are capable of conducting electrosurgical energy through tissue held therebetween. A stop is included for maintaining a minimum separation distance between opposing sealing surfaces. A ratchet is also included to maintain a closure force in the range of about 7 kg/cm2 to about 13 kg/cm2 between opposing sealing surfaces.

Abstract: Various devices and methods for dissecting and/or coagulating tissue are provided. In one embodiment, a surgical device is provided that includes an elongate member having proximal and distal ends, an energy emitter coupled to the distal end of the elongate member, and an insulating element that is disposed around the energy emitter. The insulating element can have an opening for receiving energy from the energy emitter, and the opening can be shaped to control a direction of energy emitted from the energy emitter.

Abstract: RF power is applied to a circular RF electrode cutting a side opening in a graft material of a main stent-graft in situ. As the side opening is formed by the applied RF power and the associated plasma discharge, the side opening is formed with a minimal application of force to the graft material. Further, the side opening is circular and has a fused edge.

Abstract: An electrocautery device is disclosed. In accordance with one aspect of the invention, the electrocautery electrode/tip is provided with a hollow, conductive tube terminating at its distal end in a ball point type tip. Fluid, preferably conductive fluid, is applied to the proximal end of the hollow electode/tip, and expelled from the distal end thereof during electrocautery. The ball point distal tip allows the distal tip to be directly applied to the tissue and “rolled” or slid along the tissue. This allows the distal tip to be moved across the tissue without dragging or snagging on the tissue. In addition, the conductive fluid expelled from the distal tip further lubricates the distal tip as it moves across the tissue. If conductive fluid is used, the conductive fluid emanating from the electrode/tip conducts the RF electrocautery energy away from the distal tip so that it is primarily the fluid, rather than the distal tip that actually accomplishes the cauterizing of tissue.

Abstract: Disclosed herein are embodiments of an electrosurgical device that include one or more floating electrodes and are specifically adapted to remove, cut, resect, ablate, vaporize, denaturize, drill, coagulate and form lesions in soft tissues, with or without externally supplied liquids, preferably in combination with a resectoscope, particularly in the context of urological, gynecological, laparoscopic, arthroscopic, and ENT procedures. Specific adaptations for urological and gynecological applications, for example kidney stone removal and BPH treatment, are also described.

Abstract: A high frequency incision tool for an endoscope includes a flexible insulating tube configured to be inserted into and pulled out of a treatment tool insertion channel of the endoscope, a conductive wire connectable with a high frequency power supply, the conductive wire being inserted and arranged in the flexible insulating tube, a protruded portion formed to be partially protruded forward at a distal end portion of the flexible insulating tube, the protruded portion having a rounded leading edge, and a high frequency electrode provided as a portion of the conductive wire that is exposed out of the flexible insulating tube, the high frequency electrode including at least a portion, closest to the leading edge, which is substantially perpendicular to a virtual plane including therein an axis line of the flexible insulating tube and the leading edge.

Abstract: An endoscope for high-frequency treatment includes a flexible inserting section and an operation unit connected thereto. At least one terminal is provided to the operation unit and is connected to a high-frequency power supply. The endoscope further includes a hood having at least one treatment electrode for the high-frequency treatment and at least one contact, which are connected with at least one conductive line. The endoscope further includes a tip unit provided to a tip end of the inserting section. The tip unit has a hood receiving portion to which the hood is detachably coupled and one power supply electrode which contacts the at least one contact of the hood when the hood is coupled to the tip unit. The at least one power supply electrode is connected with the at least one terminal provided to the operation unit through a conductive wire which is inserted in the inserting section.

Abstract: A medical device for performing a therapeutic procedure on a patient. The medical device comprises a probe having an applicator end and at least two injection needles connected to the probe adjacent the applicator end of the probe. Each injection needle is communicative with a fluid source for delivering fluid to the respective needle and an energy source for delivering energy to the respective needle when performing the therapeutic procedure on the patient. The medical device also includes a spreader positioned adjacent the applicator end between the injection needles for spreading tissue of the patient during the therapeutic procedure.

Abstract: A high-frequency (hf) endoscopic instrument (1) through which runs a metal stem tube (3) enclosing an operative conduit (10), fitted with a longitudinally displaceable electrode (13) supported in the operative conduit (10) and connected by an electric lead (14) crossing said operative conduit (10) to one of the two terminals of an hf generator (18). The metal stem tube (3) is connected to the other terminal of the generator (18) and in that the distal end zone of the operative conduit (10) is enveloped by an insulating tube (19) projecting beyond the distal end of the operative conduit (10) by a distance which corresponds to the safety separation (20) between the terminals in an electrically conductive liquid.

Abstract: An endoscopic biopsy device having an outer sheath that is transparent, at least along a portion thereof, to allow visualization of at least a portion of the inside of the device. A distal portion of the outer sheath may be relatively more opaque or relatively less reflective to avoid glare that may otherwise result due to the sheath reflecting light from the endoscopic light source.

Abstract: Electrosurgical methods and apparatus for treating tissue at a target site of a patient. An electrosurgical instrument includes a shaft, having a shaft distal end and a shaft proximal end, and an electrode assembly disposed at the shaft distal end. The electrode assembly includes at least one active electrode disposed on an electrode support. The instrument is adapted for coupling to a high frequency power supply or electrosurgical generator. Each active electrode is adapted for removing tissue from a target site and/or for localized coagulation of the target tissue. In one embodiment, the instrument is adapted for laparoscopic procedures.

Abstract: Treatment instrument 1 for endoscope is provided with a treatment portion 4 at the distal end of an elongated flexible insertion portion 3. The treatment portion 4 is configured such that the substantially cylindrical shaped distal end insertion portion 27 extends integrally from the treatment portion body 21, and the first forceps piece 22 is rotatably attached by the pin 23. The distal end position of the first forceps piece 22 and the distal end position of the distal end insertion portion are substantially the same. The distal end insertion portion 27 works together with the first forceps piece 22 and functions as the second forceps piece which holds the biological tissue. According to the treatment instrument for endoscope, cut-out of openings formed in biological body can be performed easily and reliably.

Abstract: An endoscopic treatment instrument is provided which includes: a sheath 2 having electrical insulating properties; a pair of arm portions 3A and 3B which are disposed opposite to each other, which protrude and retract with respect to the sheath 2, and which accordingly open and close to thereby hold an object to be treated; a cutting electrode 5 which is protruded from and fixed to the distal end of the sheath 2 and which supplies a high-frequency electric current when it touches the object to be treated.

Abstract: The invention relates to a connecting device for an electrosurgical instrument, which comprises at least one gas supply line and one power supply line. Said connecting device comprises a housing into which passes the gas supply line including the power supply line disposed therein. The connecting device is also provided with a branching device that is located in the housing, and by way of which the power supply line is diverted out of the gas supply line in order to form a gas-connection end piece and a power-connection end piece, and with a plug fixed to the housing in order to make connection to a socket in an appliance or to connecting leads running to the appliance. The gas-connection end piece and the power-connection end piece are coupled to the plug and a filter is disposed within the housing in the gas-connection end piece.

Abstract: The present invention provides methods for indirect imaging of the internal shape and structure of a heart. The invention can be practiced by injecting fluoroscopic contrast medium into the left atrium and ventricle of a heart, and by placing a radiopaque wire marker in the coronary sinus to provide a known reference location while fluoroscopic contrast medium is injected into the chambers of a heart. The invention provides for simultaneously injecting fluoroscopic contrast medium into both ventricles to characterize the ventricular septum and other cardiac structure. When using the disclosed methods, alone or in a combination with other methods and devices, a clinician can take multiple images of a heart in dyastole and systole. These images can be taken from different angles or the same angle and they can be superimposed upon each other to provide the clinician with a good image of the heart structure and the valve annulus.

Abstract: A high-frequency treatment tool for an endoscope is provided with a transparent hood to be detachably coupled to a distal end of an endoscope provided with at least one electrode, at least one high-frequency electrode provided at a tip end of the transparent hood, at least one contact which is to electrically contact the at least one electrode of the endoscope, and at least one conductive member that electrically connects the at least one high-frequency electrode and the at lease one contact. The at least one conductive member is arranged to be located at an inner position with respect to an outer surface of the transparent hood.

Abstract: The present invention provides a novel and most useful working tool for a resectoscope, adapted to side-to-side resection of biological tissue using predetermined lateral movement. Said resectoscope is adapted to either cold or hot resection and is either flexible or rigid. The present invention also provides for a suitable cutting member assembly and to a method useful for lateral resection.

Abstract: The invention relates to an instrument for surgery, in particular minimally invasive surgery. The instrument includes means for feeding back a force which is exerted on the working element of the instrument to the operating element. These means include at least a first force sensor for measuring the force which is exerted on the working element, a control unit and a first actuator. On the basis of a signal which originates from the first force sensor, the control unit controls at least the first actuator in order to control the operating element. Furthermore, the means preferably include a first position sensor for measuring a position of the working element with respect to the frame. The control unit advantageously determines an impedance which the working element is subject to as a result of the presence of a tissue or the like, on the basis of which impedance the control unit controls at least the first actuator.

Abstract: A first medical instrument includes a medical catheter, a rotatable member, an injection needle, and at least one medical-treatment electrode supported by the rotatable member. The medical catheter has a distal end. The rotatable member is connected to the medical catheter and is rotatable with respect to the medical catheter. The injection needle is movable to extend from, and to retract within, the distal end of the medical catheter. A second endoscope adjunct includes a medical catheter, a rotatable member, and at least one medical-treatment electrode supported by the rotatable member. The medical catheter has a distal end and has a lumen adapted to receive the injection needle. The rotatable member is connected to the medical catheter is rotatable with respect to the medical catheter.

Abstract: A system and method are disclosed for removing a uterus using a fluid enclosure inserted in the peritoneal cavity of a patient so as to enclose the uterus. The fluid enclosure includes a distal open end surrounded by an adjustable loop, that can be tightened, a first proximal opening for inserting an electrosurgical instrument into the fluid enclosure, and a second proximal opening for inserting an endoscope. The loop is either a resilient band extending around the edge of the distal open end or a drawstring type of arrangement that can be tightened and released. The fluid enclosure is partially inserted into the peritoneal cavity of a patient in a deflated condition and then manipulated within the peritoneal cavity over the body and fundus of the uterus to the level of the uterocervical junction. The loop is tightened around the uterocervical junction, after which the enclosure is inflated using a conductive fluid.

Abstract: A medical treatment instrument for an endoscope includes: an insulated sheath; a treatment member that is provided at a distal end of the sheath; and a wire loop that surround the treatment member and is capable of expansion and contraction by an operation at a proximal side of the sheath.

Abstract: A bipolar high-frequency treatment tool for an endoscope comprising a flexible sheath having a multi-lumen tube which is rotatable about an axis of the flexible sheath and is formed to have a pair of guide lumens, a pair of high-frequency electrodes which are arranged to be movable at a tip end of the flexible sheath and are adapted to be electrically insulated from each other, a pair of operating wires which are made of an electrically conductive material but are adapted to be electrically insulated from each other, wherein each of the pair of operating wires is respectively arranged in each of the guide lumens, and wherein the pair of high-frequency electrodes is rotated as the pair of operating wires is rotated and as the multi-lumen tube is rotated about the axis of the flexible sheath accordingly, is provided.

Abstract: A working instrument for use in a resectoscope with a pushing force-transmitting elongated support, whose proximal end area includes an attachment section for attachment in a resectoscope, and whose distal end area carries a working device. The working instrument includes, in its distal end area, a handle element. The handle element projects in a distal direction beyond the support and the working device and is connected to the working instrument so as to transmit pushing forces and can be removed.

Abstract: Electrosurgical methods and apparatus for the controlled ablation of tissue from a target site of a patient. The instrument includes a shaft having proximal and distal end portion and an active screen electrode on the distal end portion; a return electrode arranged on the shaft spaced from the screen electrode; at least one electrical connector extending through the shaft that connects the active electrode with a high frequency power supply; at least one electrical coupling member (such as a ball wire) adapted to secure the active screen electrode to the shaft and to electrically couple the screen electrode to the at least one electrical connector; and an aspiration lumen within the shaft having a distal opening coupled to the single active electrode wherein the screen electrode inhibits clogging of the aspiration lumen.

Abstract: An endoscopic morcellator device and method for use is provided. The morcellator device includes an elongate shaft having a proximal end and a distal end and a lumen extending therethrough, a handle coupled to the proximal end of the shaft, at least one active electrode disposed about a periphery of the distal end of the shaft, at least one return electrode disposed at the distal end of the shaft and electrically insulated from the at least one active electrode, and at least one fluid conduit extending along the shaft and having an outlet at the distal end of the shaft.

Abstract: The invention relates to an acoustic probe for treating cancerous tissue, for introduction into a natural or surgically created cavity in the patient, in close proximity to a tissue area which includes cancerous cells. The probe includes an acoustic transmitter arranged for transmitting an acoustic signal having characteristics which causes damage of said cancerous cells and means for administering chemotherapeutic substances. The invention further relates to a corresponding method and a system for treating cancerous tissue. The use of the invention may be combined with the use of encapsulated cytostatica within micelles or therapeutic molecules.

Abstract: An electrosurgical probe (10) comprises a shaft (13) having an electrode array (58) at its distal end and a connector (19) at its proximal end for coupling the electrode array to a high frequency power supply (28). The shaft includes a return electrode (56) recessed from its distal end and enclosed within an insulating jacket (18). The return electrode defines an inner passage (83) electrically connected to both the return electrode and the electrode array for passage of an electrically conducting liquid (50). By applying high frequency voltage to the electrode array and the return electrode, the electrically conducting liquid generates a current flow path between the return electrode and the electrode array so that target tissue may be cut or ablated. The probe is particularly useful in dry environments, such as the mouth or abdominal cavity, because the electrically conducting liquid provides the necessary return current path between the active and return electrodes.

Abstract: A laparoscopic bipolar electrosurgical instrument can apply a large closure force between its jaws without damaging the small yoke assembly.

Abstract: An endoscopic forceps for treating tissue includes a handle assembly having a elongated shaft extending therefrom which is movable relative to the handle assembly by an actuator. The forceps also including an end effector assembly attached to a distal end of the shaft which has first and second jaw members which are movable about a pivot from a first position in spaced relation relative to one another to a second position for clamping tissue. Each of the jaw members include: an insulative outer housing having an electrically conductive, inwardly facing tissue contacting surface and a proximal flange with a camming surface. The proximal flange being provided with a spring-like tail which mounts within the distal end of the elongated shaft to bias the jaw members in an open configuration. The actuator is movable relative to the handle to actuate the elongated shaft to cam the proximal flanges to pivot the jaw members toward the second position to clamp tissue.

Abstract: Apparatuses and methods for removing solid tissue from beneath a tissue surface are described. The methods rely on positioning an energy conductive element at a target site beneath the tissue surface and energizing the element so that it can vaporize tissue. The element is then moved in a pattern which provides the desired tissue removal geometry, such as spherical, ovoid, or cylindrical. Usually, the shaft is moved, typically rotated or reciprocated, and the energy conductive element is moved relative to the shaft, typically by pivoting a rigid element or bowing a flexible element.

Abstract: A dual throw advancer/retractor has a pair of finger rings that can independently advance or retract a medical device into a catheter. The advancer/retractor has a body and a channel wherein each finger ring moves independently in the channel. One end of the medical device is preferably secured to the body and forms a loop within the finger ring such that movement of the finger ring creates an amplified movement in the medical device.

Abstract: A ureter resectoscope with an elongate flexible stem tube (4) of substantial length and small external diameter, of which the distal end piece (5) is made from insulating material and which accommodates an optical unit (6) as well as a rod-shaped instrument carrier (11). The instrument carrier is disposed so as to be longitudinally displaceable parallel to the optical unit and bears on its distal end an electrode (12, 12?) that can be supplied with high-frequency current and, on its proximal end after passing through a bore in a main body (1) disposed on the proximal end of the stem tube, is fixed and electrically contacted on a slider (13) mounted so as to longitudinally displaceable.

Abstract: An electrocautery device is disclosed. In accordance with one aspect of the invention, the electrocautery electrode/tip is provided with a hollow, conductive tube terminating at its distal end in a ball point type tip. Fluid, preferably conductive fluid, is applied to the proximal end of the hollow electrode/tip, and expelled from the distal end thereof during electrocautery. The ball point distal tip allows the distal tip to be directly applied to the tissue and “rolled” or slid along the tissue. This allows the distal tip to be moved across the tissue without dragging or snagging on the tissue. In addition, the conductive fluid expelled from the distal tip further lubricates the distal tip as it moves across the tissue. If conductive fluid is used, the conductive fluid emanating from the electrode/tip conducts the RF electrocautery energy away from the distal tip so that it is primarily the fluid, rather than the distal tip that actually accomplishes the cauterizing of tissue.

Abstract: A catheter device for treating a vascular disease is provided. The catheter device includes an energy delivery device such as an optical fiber for delivering laser energy and a catheter. The catheter lumen receives the optical fiber and a fluid such as an anesthetic agent or vasoconstricting agent. According to the invention, a plurality of exits are formed in the sidewall of the catheter. The exits are in communication with the catheter lumen and administer the fluid into the blood vessel. By administering the fluid from within the catheter lumen, the present catheter device eliminates the need to make numerous external punctures to deliver fluid injections.

Abstract: An endoscopic bipolar forceps includes a housing and a shaft affixed to the housing. The shaft includes a longitudinal axis defined therethrough and a pair of jaw members attached to a distal end thereof. The forceps also includes a drive assembly for moving one of the jaw members relative to the other jaw member from a first position wherein the movable jaw members are disposed in spaced relation relative to each other to a second position wherein the jaw members are closer one another for manipulating tissue. A movable handle is included which is rotatable about a pivot to force a drive flange of the movable handle into mechanical cooperation with the drive assembly to move the jaw members from the open and closed positions. The pivot is located a fixed distance from the longitudinal axis and the drive flange is located generally along the longitudinal axis.

Abstract: A physician access system comprising a catheter for use with an endoscope, the catheter including a wire guide lumen having a plurality of access ports disposed along an intermediate portion thereof to permit the insertion of a wire guide at different locations. The location of each access port corresponds to a specific length of the catheter exiting from the distal end of the endoscope. The access ports are located so that at least one of the access ports will be positioned near the endoscope handle when the distal end of the catheter, and any operational tool attached thereto, has been extended a short distance past the distal end of the endoscope. A physician may select the access port which best allows simultaneous control of the wire guide and the endoscope depending on the length of the catheter that the physician desires to have extend from the end of the endoscope.

Abstract: An electrosurgical instrument and method is provided for transecting an organ. The electrosurgical instrument includes an introducer having a channel therein, and a conductive wire positioned in and deployable from the channel. A deployment device on the introducer is capable of moving the conductive wire between an undeployed position wherein it is substantially positioned within the channel, and a deployed position wherein a portion is deployed from and positioned outside of the channel and has a substantially looped configuration. A capture element at the distal end of the introducer can secure the distal end of the wire to the introducer, and the deployment device can subsequently move the wire toward the undeployed position to thereby cinch the conductive wire.

Abstract: An endoscope hood comprises a cap section which has A cap section which has a nail section inside of an inner surface of a tip margin, an attaching section which is disposed to a base terminal of the cap section to be attached to a tip of an inserting section of the endoscope, a soft tube 16 of which tip aperture connects to an inside of the cap section so as to insert the snare sheath therethrough, a snare wire which is inserted in the cap section via the soft tube 16, and a snare wire feeding section which is formed by making a notch section in a part of the soft tube in the nail section in a corresponding position to the tip aperture, such that the snare wire can be spread in the cap section so as to be disposed inside of the nail section, and the center axis of the soft tube is disposed so as to pass through a range of the snare wire feeding section.