摘要:
A flexible tube insertion apparatus (10) includes an insertion section (40), a stiffness variable portion (51), and a detection unit (60). The flexible tube insertion apparatus (10) includes a bend determination portion (121) that determines, based on shape information, whether or not a bent part is present in the insertion section (40), and a control portion (127) that controls a stiffness of the stiffness variable portion (51) provided in a segment arranged in the bent part to be a stiffness that makes the bent part substantially straight, when the bend judgment portion (121) determines that the bent part is present in the insertion section (40).
摘要:
The present invention relates to a nanoparticle, a preparation method thereof, a stone removing device and its application. The nanoparticle includes a nanoparticle core made of a magnetic material, and a nanoparticle shell formed by attaching a surface modifier monomer to the nanoparticle core with an initiator and / or a crosslinking agent. The prepared nanoparticle can surround stones in ureter, and then small stone remaining in body can be removed quickly without damage from the body under the action of an externally applied magnetic field, that is, the stone can be drawn and moved without injuring ureteral wall, and meanwhile the nanoparticles are placed conveniently without shift.
摘要:
The integrated optical system (100, 100', 100'', 100''') comprises a distal microendoscopic probe (102) having a prevalently longitudinal extension, capable of penetrating into a tissue to be observed, through which light radiations, directed towards the tissue and/or coming from the tissue, are able to pass; and a substantially plate-shaped proximal element (104), which is integral with the probe (102) and extends transversally to said probe (102). The element (104) can be coupled to a frame (16) of a microscopic investigation apparatus (10), and is optically transparent at least in an input optical interface region (104a) towards which the optically usable output area (102a) of the probe (102) faces. Between the optically usable area (102a) and the input interface region (104a) an optically transparent adhesive (105) is directly interposed, which constrains the probe (102) securely to the element (104). The probe (102) has an elongated body (106) comprising a lens with microfabricated aspherical curvature.
摘要:
A medical device comprising an endoscope accessory for attachment to the working end of an endoscope. The coupler device provides a flexible working channel extension from the endoscope so that instruments can exit the endoscope at various angles. The device also provides a protective cover to reduce the ingress of debris, fluid, bacteria, or other unwanted matter from the working end of the endoscope which could lead to infection.
摘要:
Several embodiments of the present invention are generally directed to medical visualization systems that comprise combinations of disposable and resuable components, such as catheter, functional handles, hubs, optical devices, etc. Other embodiments of the present invention are generally directed to features and aspects of an in-vivo visualization system that comprises an endoscope having a working channel through which a catheter having viewing capabilities is routed. The catheter may obtain viewing capabilities by being constructed as a vision catheter or by having a fiberscope or other viewing device selectively routed through one of its channels. The catheter is preferably of the steerable type so that the distal end of the catheter may be steered from its proximal end as it is advanced with the body. A suitable user for the in-vivo visualization system includes but is not limited to diagnosis and/or treatment of the duodenum, and particularly the biliary tree.
摘要:
An endoscopic mucous membrane lifting instrument includes: a cap mounted at a distal end of an insertion portion of an endoscope device; a first wire disposed at the cap and configured to be capable of protruding from an outer circumferential portion of the distal end of the insertion portion toward a direction more distal than the insertion portion and in a direction approaching an extension line of a central line of the insertion portion; a second wire disposed at the cap and be capable of protruding from the outer circumferential portion of the insertion portion along the central line of the insertion portion in the distal direction than the insertion portion; and a wire-manipulating portion configured to independently operate the first wire and the second wire.
摘要:
Improved systems, methods, and devices relating to optical fiber scanners are provided. In one aspect, a scanning apparatus includes an optical fiber and a piezoelectric actuator coupled to the optical fiber to deflect a distal end of the optical fiber in a scanning pattern. The apparatus can include drive circuitry coupled to the piezoelectric actuator, sense circuitry electrically coupled to the piezoelectric actuator and the drive circuitry to determine displacement of the piezoelectric actuator, and a processor coupled to the drive circuitry and the sense circuitry to drive the piezoelectric actuator in response to the displacement.
摘要:
The present invention provides an intraoral imaging and illumination apparatus (10) comprising a rear portion (12) and a front portion (14) removably connected to the rear portion (12). The front portion (14) is formed as a light guide (29). The rear portion (12) comprises an imaging device (16) and an illumination device (18). The illumination device (18) is adapted to couple light into the front portion (14) and towards a leading end (30) of the front portion (14) opposite the rear portion (12) so as to illuminate a first object (66). The imaging device (16) is adapted to image the first object (66).