Patents Examined by Peter A. Aschenbrenner
  • Patent number: 5423797
    Abstract: An acoustic catheter reduces transmission losses and unwanted heating of the transmission member by driving the catheter a rotary motor. The catheter includes an elongated body and a shaft extending longitudinally therethrough. The shaft is adapted for coupling to a rotary motor. A rotary-to-axial motion converter is coupled to the shaft at distal end of the catheter, for converting rotary shaft motion into axial acoustic motion. In one embodiment, the rotary-to-axial motion converter includes a swash plate driven by the shaft. The swash plate defines a surface which, at an angularly fixed reference point, moves axially in response to the rotary motion of the swash plate. A follower bears on the swash plate, for moving axially in response to axial motion of the follower. The follower includes a projection bearing on the swash plate and a spring urging the follower toward the swash plate. In one embodiment, the swash plate has a sinusoidal surface, while another embodiment has notches cut into the surface.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: June 13, 1995
    Assignee: Medelex, Inc.
    Inventors: Sorin Adrian, Peter A. Lewin, Sorin Siegler, Paul Walinsky, Richard C. Hayes
  • Patent number: 5423848
    Abstract: A trocar comprises an obturator having a piercing tip, and a cannula for forming a passage in tissue that is punched by the piercing tip. The cannula is formed from a flexible tube or a coil tube and transforms and libitum in accordance with the shape of the surgical tool that is to be inserted into the body cavity through the cannula. Therefore, the trocar of the invention allows insertion of a surgical tool curved in a circular arc into the body cavity without requiring no enlargement of the inside diameter of the cannula.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: June 13, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Nobuhiko Washizuka, Yasuhiko Oomagari, Tsuruo Hatori, Tsuyoshi Tsukagoshi, Minoru Tsuruta, Seiji Kuramoto, Shuichi Kimura, Akio Nakada, Shiro Bito, Shinichi Nishigaki, Kenji Yoshino, Keisuke Saito, Yasuo Goto
  • Patent number: 5423796
    Abstract: The present invention relates to a trocar adapted to provide a surgeon with an indication when the trocar has penetrated body tissue. The trocar includes an obturator assembly and a cannula assembly. The obturator assembly has an obturator housing and an obturator shaft. The shaft has a proximal end portion connected to the housing and a distal end portion adapted to conduct electricity and penetrate body tissue. An electric connection assembly is associated within the obturator housing and provides a conductive path between the conductive portion of the obturator shaft and an outer surface portion of the obturator housing. The connection assembly is also adapted to receive an external electrical connector.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: June 13, 1995
    Assignee: United States Surgical Corporation
    Inventors: Oleg Shikhman, Sidney D. Autry
  • Patent number: 5421825
    Abstract: The vascular introduction device is of the lateral arm type. It comprises a tubular body defining an introduction channel enabling, after installation of the distal part of the introduction device in a blood vessel of a patient to be treated, the introduction of a catheter into the vascular system up to where the operation is be performed. The introduction device is provided over part of its length with a longitudinal bulge whose inner wall defines a cavity merged with the introduction channel and communicating directly with the lateral arm. The tubular body is provided with blood inlet orifices arranged at least in the wall defining the cavity. The lateral arm thus enables feeding of a closed external blood circuit comprising a perfusion pump, with a sufficient blood rate in terms of pressure and flow, equal to the rate that would be obtained by a contralateral puncture point. The blood thus sampled off can be reinjected into the patient via the dilatation catheter.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: June 6, 1995
    Inventor: Jean-Christian Farcot
  • Patent number: 5421818
    Abstract: A therapeutic treatment apparatus for use in the middle and inner ear. The apparatus includes a tubular stem portion attached to a medicine-retaining reservoir with an internal cavity. The reservoir includes multiple pores therethrough or an opening having a semipermeable membrane therein which enables medicine delivery from the reservoir. Such delivery occurs when the reservoir comes in contact with selected middle-inner ear interface tissues. A conductive member for receiving electrical potentials from ear tissues is affixed to the apparatus. Alternatively, the apparatus may include tubular first and second stem portions secured on opposite sides of a reservoir along with a conductive member attached thereto of the type indicated above. This apparatus is surgically inserted so that the first stem portion is placed within the inner ear. At least part of the apparatus (the second stem portion) resides within the external auditory canal.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: June 6, 1995
    Assignee: Inner Ear Medical Delivery Systems, Inc.
    Inventor: Irving K. Arenberg
  • Patent number: 5417687
    Abstract: The invention provides an electrosurgical tissue penetrating probe (e.g., a trocar) for use with surgical procedures such as a laproscopy. The trocar has a stylet disposed within the housing member, having an active electrode disposed on a distal end thereof to deliver electrosurgical energy to the target tissue in contact with the stylet. A return electrode is disposed on the housing member to form part of a return electrical path to the delivery electrosurgical energy. The invention also provides an electrosurgical trocar system having an impedance monitor and associated power regulating circuitry to control the amount of electrosurgical energy delivered to tissue so that the measured tissue impedance is maintained within a preselected range.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 23, 1995
    Assignees: Medical Scientific, Inc., Ethicon Endo-Surgery, Inc.
    Inventors: Paul C. Nardella, David C. Yates
  • Patent number: 5417684
    Abstract: A medical grasper device (10) that is useful for holding and manipulating a body organ is described. Grasper device (10) is inserted into a body cavity through a cannula port and in the form of a flexible strap (26) preferably made of a plastic material having traction formations, in the form of openings (34, 34D), ridges (34C) or scalloped edges (34B) provided along the length of a holding section and serving to prevent the strap from releasing from a position encircling the organ. The strap is housed within a tube (12) that is provided with a handle (68). During the laparoscopic procedure, the strap is moved by hand or by suitable manipulation mechanism out through the opposite, distal end (20) of the tube to define a loop (28) of adjustable size. The loop is thus useful for holding and manipulating body organs and body tissue.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: May 23, 1995
    Assignee: Wilson Greatbatch Ltd.
    Inventors: Robert C. Jackson, Jack A. Belstadt, Paul D. Putt, Jr.
  • Patent number: 5417694
    Abstract: A distal femoral cutting instrument includes an intramedullary rod for referencing the patient's intramedullary canal. A valgus block with a flat reference surface mounts to the intramedullary rod at a bore of the valgus block. The bore of the block has a slant with respect to the flat reference surface on the valgus block. The reference surface defines a line that is normal to the mechanical axis of the patient while the bore of the valgus block tracks the patient's biomechanical axis. A distal femoral cutting block removably attaches to the valgus block and provides a flat cutting guide surface for shaping the patient's distal femur. The valgus block, intramedullary rod, and a stylus (for connecting the valgus block and cutting together) are removed as a unit before shaping of the distal femur. An indexing system includes a gauge having a series of openings corresponding to "anterior" referencing and to "posterior" referencing.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: May 23, 1995
    Assignee: Smith & Nephew Richards Inc.
    Inventors: Gregory C. Marik, Jennifer J. Lackey, M. Scott Elliott
  • Patent number: 5415182
    Abstract: A biopsy needle instrument for capturing a plurality of discrete specimens. The instrument includes a housing, for supporting a plurality of axially elongated stylets and cannulas disposed about each stylet to form a plurality of biopsy needles. The cannula and stylet associated with each needle can be controlled independently or in conjunction with some other needles or all the needles. An elongated sheath supports the needles, can reposition the needles and control the specimen depth.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: May 16, 1995
    Assignee: Boston Scientific Corporation
    Inventors: Yem Chin, Michael S. H. Chu
  • Patent number: 5415654
    Abstract: A laser balloon catheter apparatus emits laser light, received through optical fiber, via a balloon for irradiating tissue. It includes a laser light emitting means, a coolant supply passage located in the balloon, a coolant discharge passage located in the balloon for discharging the coolant, and a coolant circulating means for supplying the coolant to the balloon through the coolant supply passage to inflate the balloon while discharging the coolant through the coolant discharge passage.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: May 16, 1995
    Assignee: S.L.T. Japan Co., Ltd.
    Inventor: Norio Daikuzono
  • Patent number: 5415160
    Abstract: A method and apparatus for lifting an abdominal wall during laparoscopic diagnostic and surgical procedures. The surgical lift device includes a gripping portion for contacting and holding an external skin surface adjacent the abdominal wall. The gripping portion is selectively detachable from the skin surface. The device further includes a lifting portion that extends outwardly from the gripping portion. In accordance with alternative embodiments, the gripping portion may comprise an adhesive sheet or a suction member and the lifting portion may comprise a wire member or a portion of a hook and loop-type fastener.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: May 16, 1995
    Assignee: Ethicon, Inc.
    Inventors: Mark S. Ortiz, Stephen J. Failla, Jean-Pierre Kinet, Frederic Marie
  • Patent number: 5415652
    Abstract: A method and apparatus for the ablation of hard biological material, such hard dental material, using a rapidly pulsed laser employ a crystal disposed in the propagation path of the laser radiation, the crystal being disposed at the laser output and serving as an interface with an optical conductor which conveys the laser radiation to the treatment site. The crystal smooths the time/intensity characteristics of the pulsed laser radiation to the extent that transmission to the treatment site using optical wave guides is possible. Additional protective features are provided to prevent the ablated biological material to destroy the exposed optical end surfaces of the treatment applicator. Additional design features improve the ergonomic efficiency of the handpiece and its ability to be sterilized.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: May 16, 1995
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gerhard Mueller, Thomas Ertl
  • Patent number: 5415653
    Abstract: A catheter having an axis extending between a proximal end and an opposing distal end includes a plurality of optical fibers arranged to spiral in a first direction to form a circumferential layer around the axis. Rotation of the catheter in the first direction tends to expand the layer while rotation of the catheter in a second opposite direction tends to contract the circumferential layer. An outer jacket limits the expansion of the circumferential layer while an inner core limits the contraction of the circumferential layer to increase torquability of the catheter. The stranded fibers equalize bending stresses to maintain a circular cross-sectional configuration, increase flexibility and a reduced diameter for the catheter.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: May 16, 1995
    Assignee: Advanced Interventional Systems, Inc.
    Inventors: John L. Wardle, Tsvi Goldenberg
  • Patent number: 5415665
    Abstract: There is disclosed herein a device for clamping and cutting an umbilical cord so as to enable blood samples from the umbilical cord to be collected and/or tested. The device provides for the clamping of a severed end of an umbilical cord and the automatic ejection of that clamped end. The device also provides for the cutting of an umbilical cord without using excessive force regardless of the size of the umbilical cord. Additionally, the device provides for the valved use of vacuum tubes to collect umbilical cord blood samples. Furthermore, the device enables the measurement of blood values at the moment of cutting the umbilical cord. Finally, the device also provides for the protection of users and others from exposure to sharps and blood.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: May 16, 1995
    Assignee: Utah Medical Products, Inc.
    Inventors: Stephen R. Hessel, H. Theodore Young, Michael Katz
  • Patent number: 5413579
    Abstract: A set of surgical instruments which comprises a saw guide and a drill guide respectively for guiding a saw blade cutting a bone and for guiding a drill bit for thereafter forming a passage in the bone. The saw guide has a seat formation for seating against the bone, and a guide formation for guiding the saw. The drill guide comprises a bit guide and an anchor to align the bit guide relative to the cut. Also provided are a saw guide and a drill guide; and a method of carrying out an osteotomy procedure by making an oblique cut through a long bone at a position where bone portions which are misaligned intersect each other to provide two bone fragments, whereafter they are loosely bolted together and then rotated about the axis provided by the bolting until the misalignment is reduced, after which they are bolted tightly together.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: May 9, 1995
    Assignee: Technology Finance Corporation (Proprietary) Limited
    Inventor: Guilluame Tom Du Toit
  • Patent number: 5413555
    Abstract: A laser delivery system which may be coupled to a stereomicroscope or camera equivalent, may be three dimensionally positioned such that a laser beam may irradiate a wide range of treatment sites from a variety of angles and distances, and where the laser beam may be positioned at an angle to the viewing axis and track along therewith. A laser delivery system including a filter/mirror system which allows only proper wavelengths to be transmitted.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 9, 1995
    Inventor: William H. McMahan
  • Patent number: 5413575
    Abstract: A multifunction electrocautery tool includes an elongated housing within which a generally cylindrical suction tube is slidably supported. A slide control is mechanically coupled to the suction tube and movable to control the retraction and extension thereof. The slide control includes an aperture coupled to the suction passage of the suction tube to facilitate a single finger or thumb control of the suction tube position and suctioning action. A cauterizing and cutting blade is supported proximate the suction tube and is coupled to a source of RF electrical energy by a connecting wire. In one embodiment, electrical controls for the cauterizing blade are supported upon the upper surface of the elongated housing while a pair of oppositely positioned slide controls are provided on right hand and left hand side surfaces to facilitate either right or left hand operation.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: May 9, 1995
    Assignee: Innovative Medical Technologies, Ltd.
    Inventor: Thomas J. Haenggi
  • Patent number: 5413573
    Abstract: The invention relates to a surgical procedures device in connection with a medical procedure, the device comprising an orientation arm (3) adapted to be used for performing and/or guiding the movements required by the procedure, and said orientation arm (3) being protected or protectable by means of a sterile or sterilizable protection means (11), and to which orientation arm (3) or equivalent means a surgical instrument (4), such as a needle, an ultrasonic probe or equivalent means is connected or connectable, and the orientation arm (3) being connected or connectable to the surgical instrument (4) by means of an intermediate piece (12) or equivalent, made of a sterilizable material. The intermediate piece (12) and orientation arm (3) comprise identification means (15, 16) for generating an identification signal specific to the surgical instrument and for permitting the identification of the surgical instrument (4).
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: May 9, 1995
    Assignee: Onesys Oy
    Inventor: John Koivukangas
  • Patent number: 5411500
    Abstract: A hand-held portable arthroscope has a housing and a disposable cap removably attached to the distal end of the housing. A probe which includes a fiber optic image guide and a plurality of optical illuminating fibers is mounted on the cap, and is insertable into a body for imaging the internal structure of the body. The illuminating fibers extend through the cap and are connected in light communication with a quartz halogen lamp for illuminating the internal body structure being imaged. To gather light from the illuminated internal structure of a body into which the probe has been inserted, a GRIN rod is attached to the distal end of the image guide. Focussing optics are mounted in the housing in light communication with the image guide. These focussing optics are axially movable within the housing for focussing the image from the image guide. Light which passes through the focussing optics enters a camera head which is also mounted in the housing.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: May 2, 1995
    Assignee: Sofamor Danek Properties, Inc.
    Inventors: Michael Lafferty, Daniel Kline, Charles S. Slemon
  • Patent number: 5409497
    Abstract: This invention relates to an orbital aiming device for aiming a puncturing instrument to a targeted object for use with an isocentric mammo fluoro X-ray apparatus.The device comprises a guide supporting the puncturing instrument so that it aims at the isocenter of the mammo X-ray apparatus, which guide is mounted on an arcuate member orbitally movable and supported by a swiveling arm swiveling about an axis passing through the isocenter so that the puncturing instrument can be pivoted about the isocenter around two rotational axis for real-time selection of the penetration path, which path can be from any direction around a patient's breast.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: April 25, 1995
    Assignee: Fischer Imaging Corporation
    Inventors: Bernard M. Siczek, Aldona A. Siczek