An exemplary embodiment providing one or more improvements includes a micro endoscope having steering, rotation and tool control function which can be utilized for insertion using a needle and catheter for performing arthroscopy and endoscopic procedures.

An endoscope includes a control body, an insertion tube, a bending section, and an angulation drive assembly. The control body includes a first body and a second body. The first body includes a first stepped interface having a first upper surface, a second upper surface, and a first intermediate surface. The second body is coupled to the first body and includes a second stepped interface having a first lower surface, a second lower surface, and a second intermediate surface. The bending section is secured to the insertion tube. The angulation drive assembly is coupled to the bending section and is operable to articulate the bending section. When the first body and the second body are connected to each other, the first lower surface abuts against the first upper surface, the second lower surface abuts against the second upper surface, and the first intermediate surface abuts against the second intermediate surface.

An overtube includes a first tube member has a first distal opening end; a second tube member has a second distal opening end; a substantially tubular coupling member has first and second through-holes communicating with inside of the first and second tube member respectfully; a tapered surface forms part of a conical surface; a tube holding member fixed to an outer circumference surface of the second distal opening end of the second tube member; an operation wire coupled to the tube holding member and be operable to be moved along a longitudinal axis; and a guide member guides a distal part of the second tube member in movable manner, wherein the tube holding member coincides with the tapered surface or is located further inside the coupling member than the tapered surface in a state where the second tube member has the straight tube shape inside the coupling member.

An endoscope bending portion includes a circular cylindrical member on which a plurality of slots for bending are formed in a manner penetrating in a radial direction, a first slot among the plurality of slots for bending, a groove formed on the circular cylindrical member, a protrusion portion that is provided by being inserted into the circular cylindrical member through the groove from outside and by protruding on an inner circumference of the circular cylindrical member, where a wire hole is disposed inside the circular cylindrical member, a pulling wire that has a maximum outer diameter portion formed at a distal end portion, and that is inserted in the wire hole to have the maximum outer diameter portion engaged with the protrusion portion, and a restriction portion that is provided inside the circular cylindrical member.

An endoscope according to the present invention includes: a bending tube including ring-like members pivotally joined via pairs of pivots facing each other relative to a center axis, the bending tube being bendable; a pair of first pull wire guides projecting inward of a ring-like member; a forceps channel disposed so as to be contactable with the pair of first pull wire guides; and a pair of second pull wire guides being provided so as to project inward of the ring-like member and being disposed so that a distance between distal end portions extending toward an inner circumferential side of the ring-like member is a distance that is smaller than an outer diameter of the forceps channel.

A driving force transmission mechanism for medical devices, includes a tubular portion including: an opening edge portion which allows a support portion of a drive shaft to be supported at an output end in a state where at least a part of the output end is accommodated in the tubular portion; and a first adjustment section which is configured to fix a gear train in a state where the drive shaft is inserted into the tubular portion and a distal portion of the drive shaft is arranged at a predetermined position where a driven portion is able to be driven and a state where a position of the output end of the gear train is adjusted relative to a position of the support portion of the drive shaft.

An elongate catheter is provided. The catheter includes an elongate shaft with a lumen and a distal end portion repositionable between a relatively straight configuration and an arcuate configuration. The distal end portion includes a plurality of rigid segments that are disposed in series and in a consistent orientation therealong and within the sheath, the plurality of rigid segments each include a top edge and a bottom edge and an inner cavity disposed therethrough. A wire is disposed through the sheath and fixed with respect to a distal tip of the catheter, the first wire extending outboard of each of the plurality of rigid segments.

An endoscopic multi-clip dispensing apparatus has elongated inner and outer conduits sleeved together, wherein the inner conduit reciprocates between extension and retraction. A plunger rod pushes a line of clips through the core of the inner conduit at an indexed rate of one clip at a time. Each C-shaped clip has a pair of elongated jaws mated together at a hinge end. The clips are loaded into the inner conduit in head to tail fashion, with the jaw ends of a trailing clip pushing the hinge end of a leading clip. There further is a pair of wedge-shaped flared structures proximate the dispensing end of the conduits, for prying open the jaws of the lead clip during the progression of it being dispensed. Ultimately, after the lead clip passes clear of the flared structures, its jaws are free to snap shut and ‘bite’ into a target anatomy.

Embodiments of the present disclosure include a medical device. The medical device may include an elongate member, a first control member and a second control member each coupled to a distal end of the elongate member, an actuator coupled to the first control member and the second control member and configured to selectively move the first control member and the second control member to steer the elongate member, and a holding mechanism deflecting a path of the first control member from the actuator to the distal end of the elongate member and a path of the second control member from the actuator to the distal end of the elongate member. The holding mechanism may be configured to apply tension on one of the first control member and the second control member as the other is moved to steer the elongate member.

A surgical tool with a bendable shaft. At least one inelastic cable and at least one elastic cable (288) extend along the shaft. The shaft moves relative to the body to which the shaft is attached. When the shaft is so displaced, the shat bends around the inelastic cable. The inelastic and elastic cables cooperate to hold the bendable section of the shaft in compression so the bendable section of the shaft resists deformation.