Abstract: An endoscope has a tubular shaft whose interior contains components, in particular lenses, spacers, diaphragms, prisms and filters of an optical system, said components being at least partially surrounded by a support piece made of shrunk material. It is proposed that the components be surrounded by a transparent and tube-sleeve-shaped shrunk material which has been shrunk before the components are introduced into the tubular shaft.

Abstract: An arthroscopic inflow and outflow sheath providing an improved inflow and outflow system reducing the diameter of a continuous flow system while providing fluid management during arthroscopy. The improved arthroscopic inflow and outflow sheath comprises an elongated atraumatic sheath having an inner surface, outer surface, proximal end, and distal end. The atraumatic sheath further comprises plurality of ribs or webs extending from the inner surface of the sheath and designed to contact an outer surface of the arthroscope thereby creating outer lumens facilitating the inflow and outflow of fluid to a surgical site.

Abstract: A treatment device according to the present invention includes: an elongated sheath having flexibility, the sheath being passed through an endoscope and introduced to an object to be treated; an incision knife section disposed approximately along an axial line of the sheath around an outer periphery at the distal end thereof, the incision knife section being used for incising tissue of the object to be treated; and a rotation-torque-transmitting section extending from a proximal end of the elongated sheath maneuvered by an endoscopist to an intermediate section of the incision knife section in the axial line direction, the rotation-torque-transmitting section rotating the sheath by transmitting rotation torque input at the proximal end of the sheath.

Abstract: An arthroscopic inflow and outflow sheath providing an improved inflow and outflow system reducing the diameter of a continuous flow system while eliminating the need for a third portal during arthroscopy. The improved arthroscopic inflow and outflow sheath comprises an elongated atraumatic sheath having an inner surface, outer surface, proximal end, and distal end. The atraumatic sheath further comprises plurality of ribs or webs extending from the inner surface of the sheath and designed to contact an outer surface of the arthroscope creating outer lumens facilitating the inflow and outflow of fluid to a surgical site.

Abstract: Described herein are endoscopes having outer perimeter shapes configured to conform to the particular anatomy through which they will navigate. The outer perimeter cross-section of the endoscope may have one or more regions (e.g., longitudinal protuberances, edges, or narrow regions) that may allow the endoscope to conform with or fit within narrow or irregularly shaped regions of a body lumen, channel or passageway. Thus, the cross-sectional shape of the insertion tube of the endoscope may have an outer perimeter cross-section that is substantially D-shaped, oval, triangular, lobular, teardrop shaped, or the like. These non-circular cross-sectional shapes are matched approximately to the geometry of the region of the body into which the endoscope will be inserted, thereby allowing the endoscope to more precisely fit within a body lumen.

Abstract: A variable direction of view endoscope generally comprising an endoscope shaft, an objective optical system disposed in the distal end of the shaft that defines a view vector movable relative to the longitudinal axis of the shaft, and a viewing window located in the distal end of the shaft through which the view vector scans over a range of different view vector directions when moved relative to the longitudinal axis of the shaft. A portion of the distal section of the endoscope shaft adjacent and proximal to the viewing window has a cross-section perpendicular to the longitudinal axis of the shaft, and at least two regions within the cross section are connectable by a straight line that does not lie within or on the boundary of the cross section. In certain embodiments, cross section comprises at least two disjoint closed sets of points.

Abstract: At the time of irradiation of illumination light rays of an endoscope, a shadow is eliminated by leading illumination light rays passing through a second concave portion of a protruding portion of a hood main body to a shadow part of the protruding portion of the hood main body formed in an observation visual field range of the endoscope.

Abstract: A colonoscope includes an elongated body extending between a proximal and a distal end, a tip arranged on the distal end of the elongated body, and a handle arranged on the proximal end of the elongated body, wherein the elongated body generally increases in diameter and flexibility from the distal end to the proximal end. The elongated body preferably has a plurality of segments, each more proximal segment having a larger diameter than each adjacent more distal segment and/or each more proximal segment being more flexible than each adjacent more distal segment. A method for manufacturing a colonoscope includes selecting a length for each segment such that a most distal segment will extend far enough into a corresponding most distal section of the colon to be examined with each more proximal segment advanced through a corresponding more proximal section of the colon.

Abstract: An endoscope device includes an insertion portion cover as an insertion portion main body insertable into an examinee's body and having flexibility, and a helical shaped portion as a propulsion force generating portion which is rotatably placed around an outer circumference of the insertion portion cover, centered around the axis thereof, and formed in a clockwise winding toward a distal end side of the insertion portion cover. The endoscope device can thus achieve good operationality of the insertion portion, low cost, and improved insertability into a deep part in a body cavity without inflicting a pain on a patient.

Abstract: An endoscope hood has a protrusion portion which protrudes in an observation visual field direction of an endoscope at an end of a cylindrical press fitting fixing portion attached by press fitting in a state that an attachment position in a circumferential direction is positioned at a distal end portion of an endoscope insertion portion in an appropriate direction. Further, there is provided attachment state confirming device which increases an area of the protrusion portion displayed in an endoscope observation image when the press fitting fixing portion is attached to a distal end portion of a second endoscope insertion portion having a size different from that of a first endoscope insertion portion to which the press fitting fixing portion can be appropriately attached, and gives a warning about an inappropriate attachment state.

Abstract: An endoscopic device for use at a site within a body includes an inner portion and a sheath surrounding the inner portion. The inner portion defines an operative channel and an optical channel. The operative channel provides a path for fluid to or from the body site. The sheath defines a pressure-sensing channel and a fluid channel that provides a path for fluid to or from the body site. The pressure-sensing channel and the fluid channel are defined between the sheath and the inner portion. The pressure-sensing channel is configured to couple to a pressure sensor to sense pressure at the body site.

Abstract: The capsule-type medical device in accordance with the present invention is advanced the inside of the somatic cavities and lumens of humans being or animals for conducting examination, therapy, or treatment. The capsule-type medical device comprises a plurality of hard units and a soft linking unit which links the plurality of hard units and has a diameter less than that of any of the hard units, wherein one of the plurality of hard units is different in size from other hard units.

Abstract: The invention relates to a deformable endoscope that has one or more light/image transmission passages and in which at least one additional instrument is provided, wherein the unit of endoscope and additional instrument has a non-round cross-section along a longitudinal section (insertion section) to be inserted into a human or animal body orifice. The light/image transmission passage or the plurality of light/image transmission passages form—in particular together with at least one work passage—a closed unit (fiberscope part) which can be separated from the additional instrument. The fiberscope part and the additional instrument can be displaced relatively relative to one another along their longitudinal directions. A holding unit is provided for the holding and/or guiding of the fiberscope part and the additional instrument relative to one another.

Abstract: In an outer sheathed endoscope, an outer sheath (20) for shielding a flexible insertion portion (11, 12, 13) from the outside is disposed to detachably cover the flexible insertion portion (11, 12, 13). The basal end of the flexible insertion portion is connected to an operation portion (15). In the outer sheathed endoscope, A break prevention member (100) which is formed by an elastic material is disposed to surround a basal end part of the flexible insertion portion (11, 12, 13), and the outer sheath (20) is formed to cover continuously the flexible insertion portion (11, 12, 13) and the break prevention member (100).

Abstract: The invention is directed toward a micro-endoscope assembly for the removal of tissue and cells from breast ducts comprising a cylindrical guide tube with a beveled distal end defining an internal cylindrical passageway and a first smaller cylindrical tube eccentrically formed in the cylindrical passageway of a smaller diameter than the tube internal cylindrical passageway and adapted to receive and guide an endoscope with a handle assembly wherein the smaller cylindrical tube together with an inner wall surface of the cylindrical guide tube forms a second passageway. A second conduit of a smaller diameter than the smaller cylindrical tube is mounted in the second passageway to divide the second passageway into two separate divided sections and is of sufficient diameter to receive a laser fiber and a micro-endoscope is mounted in the smaller cylindrical tube and a laser is mounted in the second cylindrical tube in the second passageway.

Abstract: A guide system for use with an endoscope, and a method of use is disclosed. The guide system can include a track, in the form of a rail, and a mating member for engaging the rail. The guide system can also include an accessory, such as an accessory guide tube through which a medical instrument can be carried external of the endoscope. An end cap can be provided to support the track relative to the distal end of the endoscope.

Abstract: An endoscope system is provided with a light guide including a plurality of optical paths, and a low-coherent light source that emits a low-coherent light beams. The low-coherent light source is provided at a proximal end side of the light guide. The light beams emitted by the low-coherent light source are incident on the plurality of optical paths, respectively. The endoscope system is further provided with an interferometer unit.

Abstract: A continuously rinsing double-sheath endoscope, which includes an inner sheath and an outer sheath. The inner sheath includes a feed duct and receives an optics. The outer sheath surrounds the inner sheath and cooperates with the inner sheath to subtend a return flow duct. The outer sheath is fitted at its distal end zone with at least one aperture to establish fluid communication between the return duct and the ambience of the outer sheath. Cross-sectional geometric centers of gravity of the inner and outer sheaths are mutually shifted along most of the length of the return-flow duct subtended between them.

Abstract: An enhanced endotracheal tube utilizing a fiber optic bundle positioned in its wall section to transmit light and a reflectively coated bore to transmit images is disclosed. Additional passages formed in the wall of the endotracheal tube are adapted to receive a stylette and to act as an air passage for inflating an inflatable cuff formed on the inner end of the endotracheal tube. The light transmitted through the fiber optic bundle aids in illuminating the patient's laryngeal area and the image is reflected along the reflectively coated bore to aid the physician in intubating the patient. Alternative embodiments using a bore with a sleeve having a different refractive index from that of the tube material and an enhanced endotracheal tube for use with children are shown.

Abstract: The invention relates to an endoscope shaft comprising a hose body which forms a central working conduit and a number of functional conduits. According to the invention, the hose body is manufactured of an extruded synthetic material surrounded by a silicone clothing or cover which forms the outer layer of the endoscope shaft.

Abstract: An anoscope for use with a medical instrument insertable within the interior of the anoscope. The anoscope comprises a tubular member having a longitudinal axis with a proximal end and a distal end. The distal end is insertable into the rectum of a patient while the proximal end remains outside the body. A first longitudinal slot extends from the distal end toward the proximal end, and a second longitudinal slot extends from the proximal end toward the distal end. The first and second longitudinal slots are separated by about 180° on the surface of the tubular member. The first longitudinal slot is adapted to permit access to a site to be treated within the rectum and the second longitudinal slot is adapted to accommodate pivoting of the medical instrument at an angle to the longitudinal axis of the tubular member to improve access to the site to be treated.

Abstract: The present invention relates to a completely implantable intracranial pressure monitor, which can couple to existing fluid shunting systems as well as other internal monitoring probes. The implant sensor produces an analog data signal which is then converted electronically to a digital pulse by generation of a spreading code signal and then transmitted to a location outside the patient by a radio-frequency transmitter to an external receiver. The implanted device can receive power from an internal source as well as an inductive external source. Remote control of the implant is also provided by a control receiver which passes commands from an external source to the implant system logic. Alarm parameters can be programmed into the device which are capable of producing an audible or visual alarm signal. The utility of the monitor can be greatly expanded by using multiple pressure sensors simultaneously or by combining sensors of various physiological types.

Abstract: A thinned array of ultrasound transducers includes plural transmitters configured so that each transmitter insonates one segment of a volume at a time and an array of receivers electronically aimed at and dynamically focused upon subsegments of the insonated segment. The spacing between receivers is greater than one-half the transmitted wavelength. Echoes are received in a pattern that is aligned with the insonates segment so that receiver grating lobes nearest the echoes coincide with first transmitter nulls, minimizing the deleterious effects of grating lobes.

Abstract: A proximal housing for a full-thickness resection device (FTRD) is provided with a plurality of chambers through which fasteners are introduced into a portion of tissue to be resected. The proximal housing has a noncircular cut-out opposite the plurality of chambers to receive a noncircular endoscope. The proximal housing also is provided with a resection cavity into which the tissue to be resected is to be received. In addition, shaft openings are provided through which mounting shafts may be inserted. A noncircular endoscope is also disclosed for insertion into the cut-out whereby the endoscope has passages to house the functions of remote viewing, illumination, insufflation and irrigation.

Abstract: A self-retaining endoscope includes an observation base portion which can be inserted into a body cavity through a mouth of a patient to be examined and which is provided with an objective optical system and an illumination window, and a flexible catheter portion which is provided with an image transmission system for transmitting an image formed by the objective optical system and a light transmission system for causing the illumination window to emit illumination light and which can be inserted into the body through a nasal cavity of the patient. The catheter portion is connected to the observation base portion. An external device is detachably attached to a distal end of the catheter portion and has a monitor portion adapted to view the image through the image transmission system and a lighting device which provides light energy to the light transmission system.

Abstract: An insertion facilitating device for an intestinal endoscope has a cylindrical body in which an insertion portion of an endoscope for a large intestine is inserted while holding an anal sphincter of a patient in an open position. The cylindrical body is provided at one end thereof with a conical opening.

Abstract: An endoscope has an outer shaft, in which an optical channel receiving an optical system is arranged, wherein in the outer shaft, further, a channel for receiving a working element, at least one supply channel extending longitudinally for a medium and at least one discharge channel extending longitudinally for the discharge of a medium, the discharge being separated from the supply, are arranged. The optical channel and the at least one supply channel and/or the at least one discharge channel are configured as chambers of a profiled shaft, which is chambered in its cross section and received in the outer shaft.

Abstract: An apparatus including a handle; a first tubular body coupled to the handle and a second tubular body comprising a polymer material coupled to a distal end of the first tubular body and the distal end defining a guide face, wherein the first tubular body and the second tubular body are co-linearly aligned and collectively define a first lumen therethrough extending from an entry port to the guide face; wherein the second tubular body has a dimension adequate for insertion into a uterus of a human subject, and wherein the guide face comprises an outside diameter less than an outside diameter of the second tubular body. Also, a method of using a hysteroscope having a single operating channel.

Abstract: A multi-lumen medical device such as an endoscope or a catheter includes a shaft and a distal tip which are formed as multi-lumen extrusions having a large central working channel and a plurality of surrounding auxiliary lumens. The auxiliary lumens are arranged around the central working channel in a uniform manner so that the flexibility of the extruded member is uniform in a plurality of different directions. Use of the multi-lumen extrusion for the medical device provides a balanced device with a flexibility which is substantially the same in all directions. The medical device may be provided with four way tip deflection by providing four pull wires within four of the auxiliary lumens.

Abstract: A resectoscope for internal surgery generally comprising an operating handle having extendible instruments such as a cutting tool, viewing means such as a telescope and a light conduit and passageways to supply and remove aspirating fluid to lubricate and to wash the surgical site wherein said extendible instruments are contained within a tube divided in cross section by longitudinal wall into first and second sectors, said first sector being smaller than the second sector and containing the viewing means and providing a passageway for the supply of aspirating fluid, said second sector containing the cutting tool and providing a large passageway for the removal of aspirating fluid and surgical morsels for collection and optionally having a valving mechanism activated by retraction or extension of the cutting tool

Abstract: A continuously rinsing double-sheath endoscope, which includes an inner sheath and an outer sheath. The inner sheath includes a feed duct and receives an optics. The outer sheath surrounds the inner sheath and cooperates with the inner sheath to subtend a return flow duct. The outer sheath is fitted at its distal end zone with at least one aperture to establish fluid communication between the return duct and the ambience of the outer sheath. Cross-sectional geometric centers of gravity of the inner and outer sheaths are mutually shifted along most of the length of the return-flow duct subtended between them.

Abstract: A continuous flow endoscope comprising a working element and an outer sheath assembly. The working element comprises a frame including a telescope guide tube and a fluid passage through the frame and into the telescope guide tube. The outer sheath assembly is connected to the frame. The outer sheath assembly comprises an outer tube located around a portion of the telescope guide tube. The outer tube and the telescope guide tube form a fluid outflow conduit therebetween along a majority of the length of the outer tube.

Abstract: An endoscope has a removable suction tube to facilitate cleaning and reduce the risk of patient infection. The endoscope includes an elongated flexible probe with a slot extending along its length and an opening on the distal end of the probe. The housing at the proximal end of the probe is used to control the direction and operation of the probe, and for viewing images from the distal end of the probe. The suction tube can be removably inserted into the slot on the probe. Optionally, the distal tip of the probe can be equipped with a connector within the slot that removably secures the distal opening of the suction tube in communication with a suction opening on the distal tip of the probe. A suction tube connector at the proximal end of the suction tube allows the suction tube to be removably secured to the housing and also provides a connector for removable attachment to an external suction line.

Abstract: At the tip of an insertion part of an endoscope, an object window for regular observation use is positioned at almost the center, directly connected to which, said object window for fluorescent observation use is provided, and at the both sides of the object window for regular observation use and the object window for fluorescent observation use, two illumination windows are provided. A forceps hole which is an opening part at the tip side of a forceps channel which is inserted into the insertion part is provided at the lower right of the object window for regular observation use, and a treatment tool which is inserted through a forceps insertion channel is to be extruded from this forceps hole. By this way, on monitor images at both of white light observation and fluorescent observation, the treatment tool such as a forceps or the like is designated at almost the same position to improve the manipulation capability.

Abstract: An endoscope apparatus includes a handle assembly and an outer tube having a distal end and a proximal end, the latter being fixed to the handle assembly. The outer tube is provided with a groove in an outermost surface of the outer tube and extending lengthwise of the outer tube. The apparatus further includes an irrigation tube for disposal in the groove for conducting fluid in a direction from the proximal end to the distal end.

Abstract: An instrument for endoscopic subfascial discission of perforans veins (ESDP) consists of a surgical endoscope (1) and a tube (9). The surgical endoscope (1) contains an optical image recording and transmission system, a fiber-optic lighting system and a working channel (4). A lateral handle (14) forms in an obtuse angle with the surgical endoscope and has at least one reproduction and lighting system (8, 6) guided to coupling spots (5, 7) provided at the proximal end of tube instrument. The distal end of the tube (9) extends beyond the distal end of be surgical endoscope (1) and is designed as a thicker, atraumatic lip (10) that contains a suction channel (12) diametrically arranged to a front lens system (16) and connected through a space (11) between the shaft (2) and the tube (9) to a connection fitting (13) for a suction hose (15).

Abstract: A method for forming an arthroscope having an inclined angle of view includes providing an inner lens tube member, an outer tube member, and an annular shim member. The annular shim member is positioned about an outer peripheral portion of the inner lens tube member and includes an upper portion defining an outer positioning surface and side edges angularly offset relative to an optical axis. The inner lens tube member and annular shim member are positioned within the outer tube member while a plurality of optical fibers are positioned therebetween. The optical fibers are oriented about the outer positioning surface and side edges such that the optical fibers are angularly offset relative to the optical axis. Alternatively, a shim member may be provided that is arcuate and defines a cross-sectional dimension approximating a maximum inner dimension of the outer tube member, wherein the shim member engages the outer tube member to stabilize the inner lens tube member therein.

Abstract: A device for measuring incident light in a remote situs such as a body cavity which includes a central tubular member through which light is delivered to the remote situs and one or more auxiliary tubular members through which incident light in the remote situs is transmitted to a light detector. Each auxiliary tubular member receives incident light from a different portion of the remote situs. The apparatus is particularly useful for conducting phototherapy in body cavities and has been demonstrated in the phototherapy treatment of superficial cancer in a bladder.

Abstract: An endoscope includes a first tube having a proximal end and distal end, a second tube having a proximal end and distal end, and a control rod movably coupled to the first tube and secured to the second tube for allowing the second tube to be rotated out of lengthwise alignment with and axially movable with respect to the first tube. The first tube includes concentrically disposed optical fibers with ends terminating at the distal end of the first tube. The second tube includes separate concentrically disposed optical fibers with ends terminating at both the proximal and distal ends of the second tube. When the first and second tubes are longitudinally aligned, at least some of the optical fibers in the second tube are substantially aligned with those in the first tube such that light is coupled therebetween. Both of the first and second tubes are capable of receiving imaging means.

Abstract: An obturator for measuring incident light in a remote situs such as a body cavity which includes a treatment tubular member through which light is delivered to the remote situs and one or more auxiliary tubular members through which incident light in the remote situs is transmitted to an external light detector. The treatment and auxiliary tubular members are attached to a connector element which is in turn connected to a cystoscope lens port. The treatment and auxiliary tubular members are aligned off-center with respect to the central axis of the obturator so that a cystoscope lens can be inserted in the lens port and pass through the axial center of the obturator. Each auxiliary tubular member receives incident light from a different portion of the remote situs. The apparatus is particularly useful for conducting phototherapy in body cavities and has been demonstrated in the phototherapy treatment of superficial cancer in the bladder.

Abstract: An electronic endoscope having an internal circuit board bearing an electronic circuit arrayed thereon and coupled with a solid-state image pick-up element, with wires of the circuit board connected to lead wires passing through the insertion portion of the endoscope. The circuit board is folded along lines extending the axial direction of the distal end of the insertion portion, so as to divide the circuit board into a plurality of planar surfaces. The electronic circuit wiring portion and the lead wire connecting portion are laid out on the different planar surfaces.