Reciprocating Patents (Class 606/177)
  • Patent number: 9833317
    Abstract: Catheter devices provide for rolling movement between the inner and outer catheter tubes with a roller assembly in a radial gap between the inner and outer catheter tubes. Devices of the invention are particularly useful in minimally invasive implantations, such as the implantation of a vascular implant. A particular application is interventional catheter-assisted aortic valve implantation.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 5, 2017
    Assignee: Biotronik AG
    Inventor: Ralf Kaufmann
  • Patent number: 9498832
    Abstract: A saw blade assembly for a power saw includes a housing blade assembly having a plurality of saw teeth depending therefrom and a blade disposed within the housing blade assembly, the blade and the housing blade assembly being drivable in opposite directions by a reciprocating driver mechanism.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 22, 2016
    Assignees: Richpower Industries Inc., NingBo Gemay Industry Co., Ltd.
    Inventors: Lifeng Zhou, Xuefeng Xu
  • Patent number: 9101992
    Abstract: A saw blade assembly for a power saw includes a housing blade assembly having a plurality of saw teeth depending therefrom and a blade disposed within the housing blade assembly, the blade and the housing blade assembly being drivable in opposite directions by a reciprocating driver mechanism.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 11, 2015
    Assignee: Ningbo Gemay Industry Co., Inc
    Inventors: Lifeng Zhou, Xuefeng Xu
  • Patent number: 8961521
    Abstract: Reciprocating rasps for the surgical preparation of the bone prior to the implantation of a glenoid or acetabular component with complex geometry are disclosed. Surgical methods for the use of such reciprocating rasps are also disclosed.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: February 24, 2015
    Assignee: DePuy Synthes Products, LLC
    Inventors: Ryan C. Keefer, Sarah M Anthony, Conrad L. Klotz, Kyle E. Lappin, Van A. Flamion, James A. Caywood, Francisco A. Amaral, Michael J. Fortin, Gabriel M. Surma, Joanna L. Surma
  • Patent number: 8888783
    Abstract: A tool (1, 31) for cutting bone comprises an elongate blade (7,37) connectable to a generator of longitudinal-mode ultrasonic vibrations. The blade (7,37) has two lateral cutting edges (9,10) linked by a rounded distal tip (8). A series of triangular teeth (13) extends along each cutting edge (9,10) and the distal tip (8). The blade (37) may taper towards each cutting edge (9,10) and the distal tip (8). A variant of the tool (21) comprises an elongate part-cylindrical blade (27) connectable to a generator of torsional-mode ultrasonic vibrations. The blade (27) has a cutting edge at its distal tip (28) provided with a plurality of triangular teeth (23). All forms of the tool (1, 21, 31) are particularly suitable for cutting cancellous bone around an implant to be removed during revision of a joint arthroplasty.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: November 18, 2014
    Assignee: Orthosonics Limited
    Inventor: Michael John Radley Young
  • Patent number: 8858559
    Abstract: A surgical system for cutting tissue of a patient includes an outer housing and a reciprocating assembly structurally configured to carry a cutting tool in a reciprocating motion. An actuator knob is manually accessible to the user and may be fixed axially to the outer housing. The reciprocating assembly may reciprocate relative to the actuator knob. The actuator knob may be configured for rotational movement between a lock position and an unlock position. The system may also include a locking mechanism configured to retain a cutting tool within the reciprocating assembly. The locking mechanism may be responsive to movement of the actuator knob to maintain the tool within the output shaft when the actuator knob is in the lock position and permit removal of the tool when the actuator knob is in the unlock position. Surgical cutting tools, such as blades include thickness enhancing features.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: October 14, 2014
    Assignee: Medtronic PS Medical, Inc.
    Inventors: Thaddeus Scott Milburn, Bret Randal Hauser, R. Mitchell Sherry, S. Shane Dexter
  • Patent number: 8777956
    Abstract: A tissue repair device. The tissue repair device includes a tubular shaft having a longitudinal bore for delivering biological material to a soft tissue defect, and an awl having a distal end configured for microfracturing bone underlying the defect. The tubular shaft and the awl are movable relative to one another such that the awl is at least partially positioned within the longitudinal bore of the tubular shaft.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: July 15, 2014
    Assignee: Biomet Sports Medicine, LLC
    Inventors: Jacy C. Hoeppner, Kevin T. Stone
  • Patent number: 8702710
    Abstract: A surgical sagittal saw capable of actuating an assembly that includes a static bar and at least one drive rod and a blade head, both of which are pivotally mounted to the bar. The saw includes a receiving surface on which the blade assembly bar is seated. A clamp removably holds bar in a static position against the receiving surface. The saw includes at least one drive pin. When the bar is mounted to the plate, the drive pin engages the assembly drive rod. A motor is connected to the drive pin to oscillate the pin.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: April 22, 2014
    Assignee: Stryker Corporation
    Inventor: Steve Carusillo
  • Patent number: 8702738
    Abstract: A tissue cutting device that is especially suited for neurosurgical applications is disclosed and described. The device includes a handpiece and an outer cannula in which a reciprocating inner cannula is disposed. The inner cannula includes a hinge between a body section and a cutting section that allows the cutting section to pivot when the inner cannula reciprocates within the outer cannula. A tissue collector is also provided and is in fluid communication with the lumen of the inner cannula. The handpiece includes a proximal section that is angled with respect to a distal section.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: April 22, 2014
    Assignee: Nico Corporation
    Inventor: Joseph L. Mark
  • Patent number: 8636739
    Abstract: A surgical saw includes a shaft, a first saw blade mounted on the shaft, a second saw blade mounted on the shaft parallel to the first saw blade, the first saw blade having a first tooth having two distal tips, and the second saw blade having a second tooth with a distal tip, the second tooth bent towards the first saw blade and the distal tip of the second tooth aligned with a centerline between the two distal tips of the first tooth.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: January 28, 2014
    Assignee: Synvasive Technology, Inc.
    Inventors: Michael G. Fisher, John Anes
  • Patent number: 8585704
    Abstract: A device for removing tissue from a patient may include an elongate flexible body having a proximal end, a distal end, and a longitudinal axis therebetween, the elongate body having opposed first and second major surfaces with a lateral orientation across the axis, and a plurality of blades distributed laterally across the first major surface. Each blade may have a first end adjacent the first surface and extending to a cantilevered second end, a first edge between the first and second ends of the blade being oriented toward the distal end of the elongate body, a second edge between the first and second ends of the blade being oriented toward the proximal end of the elongate body, a height of the blade between its first and second ends, and an axial length of the blade between its first and second edges.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: November 19, 2013
    Assignee: Baxano Surgical, Inc.
    Inventors: Gregory P. Schmitz, Jeffery L. Bleich, Steven A. Spisak, Roy Leguidleguid, Jefferey Bleam
  • Patent number: 8556901
    Abstract: Reciprocating rasps for the surgical preparation of the bone prior to the implantation of a glenoid or acetabular component with complex geometry are disclosed. Surgical methods for the use of such reciprocating rasps are also disclosed. A reciprocating rasp for use in the surgical preparation of a glenoid includes a shaft having a first end configured to be secured in a chuck of a reciprocating tool, and a cutting head secured to a second end of the shaft. The cutting head includes a cutting surface having a plurality of cutting teeth arranged in a geometry that corresponds with a geometry of the glenoid prosthesis, and an inwardly curved concave guide surface that is devoid of cutting teeth and configured to receive a guide pin inserted in the glenoid of the patient when the cutting head is secured to the second end of the shaft.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: October 15, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Sarah M. Anthony, Conrad L. Klotz, Kyle E. Lappin, Van A. Flamion, Gabriel M. Surma, Joanna L. Surma, Joseph P. Iannotti
  • Patent number: 8535317
    Abstract: A spherical osteotomy device for the efficient surgical sectioning of bone includes a part spherical body and a shank. The part spherical body includes an outer surface, an inner surface, a cutting end between the outer surface and the inner surface, an axis extending from the outer surface through the inner surface, and an origin on the axis. The inner surface has a substantially constant radius extending from the origin. The shank extends outwardly from the outer surface of the body and is substantially aligned with the axis. Other embodiments of an osteotomy device are described. Also provided is a method of using the osteotomy device for performing spherical osteotomies.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: September 17, 2013
    Inventor: Zsigmond Szanto
  • Patent number: 8518045
    Abstract: A spherical osteotomy device for the efficient surgical sectioning of bone includes a part spherical body and a shank. The part spherical body includes an outer surface, an inner surface, a cutting end between the outer surface and the inner surface, an axis extending from the outer surface through the inner surface, and an origin on the axis. The inner surface has a substantially constant radius extending from the origin. The shank extends outwardly from the outer surface of the body and is substantially aligned with the axis. Other embodiments of an osteotomy device are described. Also provided is a method of using the osteotomy device for performing spherical osteotomies.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: August 27, 2013
    Inventor: Zsigmond Szanto
  • Patent number: 8206392
    Abstract: A surgical saw includes a shaft, a first saw blade mounted on the shaft, a second saw blade mounted on the shaft parallel to the first saw blade, the first saw blade having a first tooth having two distal tips, and the second saw blade having a second tooth with a distal tip, the second tooth bent towards the first saw blade and the distal tip of the second tooth aligned with a centerline between the two distal tips of the first tooth.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: June 26, 2012
    Assignee: Synvasive Technology, Inc.
    Inventors: Michael G. Fisher, John Anes
  • Patent number: 7909822
    Abstract: A debrider apparatus is disclosed. The debrider includes a first tubular member that is adapted to connect to a first potential of an electrosurgical generator. A second tubular member is at least partially disposed within the first tubular member and is adapted to connect to a second potential of the electrosurgical generator. At least one tubular member is selectively movable relative to the other. A first set of teeth is disposed around at least a portion of a distal periphery of the first tubular member. A second set of teeth is disposed around at least a portion of a distal periphery of the second tubular member. At least one switch is operably coupled to at least one of the tubular members and activates movement of one tubular member and supplies respective electrical potentials to the tubular members.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: March 22, 2011
    Assignee: TYCO Healthcare Group LP
    Inventor: Paul Guerra
  • Patent number: 7744616
    Abstract: A sagittal saw blade wherein the teeth are arranged so that relative to the teeth located closer to the outer sides of the blade, the inner located teeth are located closer to the proximal end of the blade. The blade is further formed to have an opening between at least two of the teeth that extends proximally rearward. The opening increases in width as the opening extends proximally along the length of the blade. The opening opens into a void space that functions as a chip catchment space.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: June 29, 2010
    Assignee: Stryker Ireland, Ltd.
    Inventor: Denis A O'Donoghue
  • Patent number: 7722548
    Abstract: A soft tissue biopsy device is provided which allows for the recovery of a biopsy of tissue flat in shape, particularly suitable for lymph node biopsy. The device includes twin opposing primary blades preferably aligned in parallel planes, to cut the upper and lower surfaces of the biopsy. A detachment blade is provided to cut the side walls and distal ends of the biopsy. In a preferred embodiment, each primary blade has a sharpened tip set at an angle with a sharpened point to assist tissue penetration. The detachment blade, preferably has inwardly curving flexible sharpened tips at its distal end, and is attached to the handle at its proximal end by a slider such that when in a retracted position, the detachment blade is retracted from the tip of the twixt blades; and when in an advanced position, the tip of the detachment blade abuts the tip of the twin blades.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: May 25, 2010
    Inventor: Paul Laurence Cervi
  • Patent number: 7699846
    Abstract: A surgical instrument comprises a hollow tube (18) having a cutting window (16) at the distal end portion. An inner tube (15) is disposed within the tube (18) and is mounted for rotation about its longitudinal axis. A cutting tool (17) is located at the distal end of the tube (15), and is positioned adjacent to the cutting window (16). An outer tube (14) is provided over the tube (18). A motor (5) is provided for rotating the inner tube (15), and saline is fed to the cutting window (16) via a passageway (25) between the tubes (15) and (18). The inner tube (15) has a central lumen (24) through which tissue cut by the cutting tool (17) is removed under the action of a source of suction (12). The outer surface of the tube (18) is covered with an electrically insulating layer (22) and coagulating RF signals are supplied between the tube (18) and the outer tube (14) so as to coagulate tissue at the cutting window (16).
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: April 20, 2010
    Assignee: Gyrus ENT L.L.C.
    Inventor: Phillip A. Ryan
  • Patent number: 7682360
    Abstract: A debrider apparatus is disclosed. The debrider includes a first tubular member that is adapted to connect to a first potential of an electrosurgical generator. A second tubular member is at least partially disposed within the first tubular member and is adapted to connect to a second potential of the electrosurgical generator. At least one tubular member is selectively movable relative to the other. A first set of teeth is disposed around at least a portion of a distal periphery of the first tubular member. A second set of teeth is disposed around at least a portion of a distal periphery of the second tubular member. At least one switch is operably coupled to at least one of the tubular members and activates movement of one tubular member and supplies respective electrical potentials to the tubular members.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 23, 2010
    Assignee: TYCO Healthcare Group LP
    Inventor: Paul Guerra
  • Patent number: 7527628
    Abstract: A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided. The surgical saw blade may have a distal end having at least one pair of teeth configured to be adjacent to each other and each of the pair of teeth is configured as a right triangle each having a hypotenuse which is oriented at least one of towards and away from the centrally positioned long axis.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: May 5, 2009
    Assignee: Synvasive Technology, Inc.
    Inventors: Henry Hasbrouck Fletcher, Michael Gerard Fisher
  • Publication number: 20090105740
    Abstract: The present invention relates to a facial bone surgery apparatus for medical treatment assembled to a hand piece having a straight reciprocating part, a saline solution supply part and a foreign substance discharge part, which includes: an inner pipe reciprocally movable together the straight reciprocating means and having a hollow shape of a soft flexible material; an outer pipe connected to a main body of the hand piece and installed at an outer periphery of the inner pipe to guide reciprocal movement of the inner pipe, and having a bent section formed between both ends thereof, the outer pipe being formed of a hard material; and a cutting tool assembled at an end of the inner pipe to reciprocate therewith and reciprocally guided by the outer pipe.
    Type: Application
    Filed: January 7, 2009
    Publication date: April 23, 2009
    Applicant: Medikan Co., Ltd
    Inventors: HeeYoung Lee, JunSeok Lee
  • Patent number: 7294131
    Abstract: An apparatus and method for positioning and controlling the movement of a bone removal device, and thus of controlling the profile of material removed by the device. Also an improved drive mechanism for a bone removal device, where the drive shaft is readily removable for maintenance or replacement, without significant disassembly of the device.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: November 13, 2007
    Assignee: Warsaw Orthopedic, Inc.
    Inventor: Alex Kunzler
  • Patent number: 7070604
    Abstract: A novel cutter instrument uses radiofrequency (RF) electrosurgery and RF energy to achieve the desired cutting action with minimum of mechanical force, thereby reducing the risk of tissue damage due to excessive mechanical cutting action. Preferably, a cutter head of the instrument comprises an outer tube of electrically-insulating material with an aperture into which is telescoped an inner electrically-conductive tube. When the working or leading end of the latter is reciprocated across the aperture in the outer tube while RF electrosurgical currents are applied to the inner tube, the cutting action of tissue entering the aperture takes place primarily via the RF electrosurgical currents.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: July 4, 2006
    Inventors: Jon C. Garito, Alan G. Ellman
  • Patent number: 7001403
    Abstract: A saw blade for medical, in particular surgical, applications having a recess for mounting the saw blade inside a saw which exerts an saw movement, especially an oscillating saw movement, to the saw blade. In order to improve the dynamic behavior of the saw blade, longitudinal flat areas of a surface of the saw blade are provided with a plurality of superficial impressions of a defined contour that are aligned at an angle to the longitudinal axis of the saw blade.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: February 21, 2006
    Inventors: Thomas Hausmann, Christian Hendrich
  • Patent number: 6916328
    Abstract: A percutaneous cellulite removal needle of the present invention can be used to make the appearance of cellulite less obvious by cutting the fibrous bridges that connect the skin to muscle/fascia or fibrous septae in the subcutaneous fat in a minimally invasive manner. The percutaneous cellulite removal needle of the present invention preferably includes a body having an internal chamber that ends at a laterally disposed aperture. A cutting mechanism is substantially positioned within the internal chamber in a retracted position and at least partially protrudes through the laterally disposed aperture in a cutting position. A situating mechanism transitions the cutting mechanism between the retracted position and the cutting position. The present invention also includes a method in which the percutaneous cellulite removal needle is inserted through the skin with the cutting mechanism in the retracted position. The cutting mechanism is then extruded so that the cutting mechanism is in the cutting position.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: July 12, 2005
    Assignee: Expanding Concepts, L.L.C
    Inventor: Darrell C. Brett
  • Publication number: 20040006335
    Abstract: A surgical saw and method for cauterizing tissue, especially bone tissue, substantially immediately after the tissue is cut. The saw preferably includes a body portion defining a handle. A saw blade extends from the body portion of the saw and defines a cutting surface. A cauterizing element is fixed for movement with the saw and generally trails the cutting surface of the saw blade when the saw is moved in a cutting direction. The cauterizing element may be disposed on at least a portion of the saw blade. The saw may also comprise a blade guard and a cauterizing element may optionally be disposed on the blade guard. The cauterizing element may be activated simultaneously with activation of the saw blade.
    Type: Application
    Filed: July 8, 2002
    Publication date: January 8, 2004
    Inventor: Lawrence L. Garrison
  • Patent number: 6638290
    Abstract: A connector assembly for connecting a surgical saw blade to a housing of a surgical instrument. The connector assembly allows a surgeon to align, insert and lock the surgical blade in the collect of the surgical instrument without any special tools, and further provides a stable and robust platform for mounting the surgical saw blade thereto. The connector assembly includes a gripper having a centrally located bore and a pair of opposing shelves. A shaft having shoulders is slidably fitted within the bore of the gripper. The shoulders communicate with ledges of the shelves to prohibit movement of the finger gripper. This same mechanism also prevents movement of a surgical saw blade, once inserted within the slot of the shaft, from becoming dislodged or ejected from the connector assembly. A biasing spring biases the gripper in a first position, but the gripper can move between the first position and a second position.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: October 28, 2003
    Assignee: Microaire Surgical Instruments, Inc.
    Inventors: John Pascaloff, Joseph Ventura
  • Publication number: 20020068952
    Abstract: A connector assembly for connecting a surgical saw blade to a housing of a surgical instrument. The connector assembly allows a surgeon to align, insert and lock the surgical blade in the collet of the surgical instrument without any special tools, and further provides a stable and robust platform for mounting the surgical saw blade thereto. The connector assembly includes a gripper having a centrally located bore and a pair of opposing shelves. A shaft having shoulders is slidably fitted within the bore of the gripper. The shoulders communicate with ledges of the shelves to prohibit movement of the finger gripper. This same mechanism also prevents movement of a surgical saw blade, once inserted within the slot of the shaft, from becoming dislodged or ejected from the connector assembly. A biasing spring biases the gripper in a first position, but the gripper can move between the first position and a second position.
    Type: Application
    Filed: December 6, 2000
    Publication date: June 6, 2002
    Inventors: John Pascaloff, Joseph Ventura
  • Patent number: 6302406
    Abstract: A connector assembly for connecting a surgical saw blade to a housing of a surgical instrument. The connector assembly allows a surgeon to align, insert and lock the surgical blade in the collet of the surgical instrument without any special tools, and further provides a stable and robust platform for mounting the surgical saw blade thereto. The connector assembly includes a tapered conical shaped sleeve which is positioned within the housing and rotatable in both a clockwise and counter-clock wise direction. A pair of grippers are mounted within the connector assembly and engage the surgical saw blade when the tapered conical shaped gripper sleeve is rotated in a first position. A sternum guard is also mounted to the housing.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: October 16, 2001
    Assignee: Microaire Surgical Instruments, Inc.
    Inventor: Joseph Ventura
  • Patent number: 6048345
    Abstract: A motor driven reciprocating surgical file apparatus and method for trimming and shaping hard body materials. A small file is detachably mounted on the distal end of a reciprocating offset arm. The offset arm allows the file to be inserted and manipulated in a surgical site. The file is comprised of a slender elongated upward extending arm and an adjoining lower file portion. A plurality of teeth surround the file portion and are arranged to shape and trim bone and cartilage in a direction which is substantially parallel to the reciprocating motion of a motor's output shaft. A coupling is provided on the reciprocating arm for detachably mounting optional files. A control circuit allows a surgeon to vary the rate at which the file reciprocates. In a first aspect of the invention, the reciprocating file is driven by a battery operated electric motor. In a second aspect of the invention, the reciprocating arm is driven by an AC motor.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: April 11, 2000
    Assignee: Joseph J. Berke
    Inventors: Joseph J. Berke, Charles T. Michael
  • Patent number: 6007541
    Abstract: The invention relates to a handheld surgical power saw intended to be an integrated surgical tool or an attachment to a motorized surgical tool. The tool consists of two arms that reciprocate in opposite directions at all times. Attached to each arm is a set of cam followers and a saw blade. The arms are driven by a cam with outer surfaces that smoothly undulate between the two sets of cam followers.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: December 28, 1999
    Assignee: Midas Rex, L.P.
    Inventor: Tony D. Scott
  • Patent number: 5919203
    Abstract: A powered surgical tool includes a battery-operated motor that has an eccentrically mounted drive wheel for engaging a longitudinally movable drive wire that operates to incrementally rotate a ratchet wheel. A work wheel in the form of a cutting blade or a grinding wheel is mounted for rotational movement with the ratchet wheel at the distal end of the surgical tool. In another version, the cutting blade has a periphery of cutting teeth, which are driven directly by the longitudinally movable drive wire. A grinding wheel version discloses two grinding wheels that are incrementally driven in opposite angular directions by a pair of longitudinally movable drive wires.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: July 6, 1999
    Assignee: Royce H. Husted
    Inventors: Royce H. Husted, Joel P. Husted
  • Patent number: 5797938
    Abstract: An electrosurgical hemostatic instrument including a curved end effector. A preferred embodiment of the invention provides a bipolar endoscopic clamping, coagulation and cutting device. In this device, a substantially straight, axially flexible knife is used to cut tissue grasped by the jaws of the end effector. The end effector includes a knife channel which is wider than the knife. The knife may include sacrificial contact points adapted to contact the walls of the knife channel as the knife moves through the channel, protecting the cutting edges of the knife blade from damage.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: August 25, 1998
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Joseph F. Paraschac, Kenneth S. Wales, Rudolph H. Nobis, Kip Rupp
  • Patent number: 5766184
    Abstract: An endoscopic treatment tool according to the present invention is led into the body through the endoscope channel. A treatment section (2) is operated by transmitting the operating power of an operating section (4) on the operator's side to the treatment section (2) at the forward end thereof. The endoscopic treatment tool is characterized in that a tubular sheath (28) is adapted to be inserted into the endoscope channel, rotative operation means (55) is arranged in the operating section (4) for rotatively operating the treatment section (2), and an operating wire (33) is rotatably inserted into the sheath (28) and has a torque transmissivity for coupling the treatment section (2) and the rotative operation means (55) and capable of transmitting the rotation torque from the rotative operation means (55) to the treatment section (2).
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: June 16, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Kiyotaka Matsuno, Yukio Sato, Akihito Sadamasa, Minoru Shinozuka, Yutaka Yanuma
  • Patent number: 5676680
    Abstract: A method and apparatus for use as a wenchless and adapterless collet system for attaching an elongated surgical cutting blade to an oscillating surgical saw. The system comprises a collet adapted to mate with a particularly shaped blade hub. The collet has a transverse clamping head attached to a longitudinally slidable, axially aligned shaft which is adapted to slide axially along the axis of the handpiece. The handpiece has an annular anchor sleeve having an annular groove proximally adjacent to the collet clamping head. The hub at the proximal end of the blade is provided with a radially inwardly extending locking flange adapted to engage the clamping head and a radially inwardly extending anchor flange adapted to engage the annular groove in the anchor sleeve. The longitudinal spacing between the hub flanges enables the hub to be received adjacent the anchor groove in an interdigitating mating of complementarily shaped surfaces.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: October 14, 1997
    Assignee: Linvatec Corporation
    Inventor: Joepert Lim
  • Patent number: 5609603
    Abstract: A surgical cutting device having a powered handpiece adapted to receive a cutting blade. The cutting blade is locked to the drive shaft by a locking ball holding member which is locked in place by a cylindrical cam ring which urges the balls of the locking device into corresponding notches in the blade. A second locking ball holding member is provided on the housing of the handpiece to lock the cylindrical cam ring itself. A blade guard extends from the cylindrical cam ring to produce a surgical cutting device having an improved safety feature which prevents its operation without the guard in proper position.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: March 11, 1997
    Assignee: Hall Surgical Div. of Zimmer Inc.
    Inventor: Harry A. Linden
  • Patent number: 5591170
    Abstract: A powered bone cutting saw is used from within the intramedullary canal of a bone. A cutting blade is inserted through a bored intramedullary canal to a predetermined cutting depth. A motor is coupled to the cutting blade to rotate the cutting blade. The blade is extended to a cutting position and operated by a surgeon to cut the bone radially from the inside outwardly, transversely, to the intramedullary canal. Gearing selectable by the surgeon permits the blade to oscillate. The motor can also be coupled to a reamer tip for boring the intramedullary canal. The apparatus, including the reamer tip, can be cannulated to accept a guide wire.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: January 7, 1997
    Assignee: Genesis Orthopedics
    Inventors: Alan R. Spievack, Fernando A. de Toledo
  • Patent number: 5433457
    Abstract: A saw blade retention system for retaining a saw blade to a reciprocating saw includes a shaft connected to the saw for reciprocation and having a slot for receiving the saw blade. The saw blade retention system also includes a chuck disposed about the shaft and having a slot aligned with the slot in the shaft in an unlocked position for allowing the saw blade to be disposed in the slot for the shaft. The saw blade retention system further includes a cam-type mechanism for allowing the chuck to rotate angularly relative to the saw blade and shaft to a locked position to prevent the saw blade from exiting the slots and for allowing the chuck to move axially relative to the shaft to prevent axial movement of the saw blade between the chuck and the shaft. Complementary inclined surfaces are provided on the blade and the chuck to center the blade relative to its intended path of reciprocation.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: July 18, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David W. Wright
  • Patent number: 5340129
    Abstract: A saw blade retention system for retaining a saw blade to a reciprocating saw includes a shaft connected to the saw for reciprocation and having a slot for receiving the saw blade. The saw blade retention system also includes a chuck disposed about the shaft and having a slot aligned with the slot in the shaft in an unlocked position for allowing the saw blade to be disposed in the slot for the shaft. The saw blade retention system further includes a cam-type mechanism for allowing the chuck to rotate angularly relative to the saw blade and shaft to a locked position to prevent the saw blade from exiting the slots and for allowing the chuck to move axially relative to the shaft to prevent axial movement of the saw blade between the chuck and the shaft. Complementary inclined surfaces are provided on the blade and the chuck to center the blade relative to its intended path of reciprocation.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: August 23, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David W. Wright
  • Patent number: 5306285
    Abstract: A surgical saw blade comprises a cutting edge, blade body and hub for connecting the blade body to a handpiece. The cutting edge comprises two rows of cutting teeth. Each tooth has a face and an opposing hollow trough at the base thereof, the distal end of the trough terminating at beveled sides. The beveled sides and face opposing the hollow trough terminate at a cutting point. The hollow trough and cutting point combine to provide a straight, fast and accurate cut with no cutting debris build up. The dispersion of cutting debris dramatically reduces the danger of thermal necrosis, produces a cooler cut and extends the saw blade life.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: April 26, 1994
    Assignee: Komet Medical
    Inventors: Alex M. Miller, Robert L. Stranahan
  • Patent number: 5201749
    Abstract: A circularly oscillating saw, used mainly in the surgical field which, while having minimal dimensions, must have a high cutting capacity with an atraumatic cool cut, without running hot itself. The saw provides a direct connection of the saw blade with an eccentric and a suitable bearing approximately in the center between the saw blade tip and the eccentric, which provides a circularly oscillating cutting. The saw allows a cut to take place not only in parallel to the saw blade but in all directions of a plane. In addition, contamination of a wound by lubricants and bearing debris is prevented because of the excellent transport of chips and coolant. Also, the saw is to easily cleaned, sterilized and repaired while the manufacturing of this precision instrument is efficient. An internal cooling protects from the saw running-hot and ensures an optimal coolant supply. Drive-side and output-side sealing devices achieve a hermetic sealing-off of the saw mechanism.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: April 13, 1993
    Inventors: Rainer E. Sachse, Hans Sachse
  • Patent number: 5087261
    Abstract: A saw-blade for sawing living human bone during surgical operations, the saw-blade (1) presenting on at least one side (10) at least two saw portions (8, 9) and said saw-blade (1) having at least one inner space (14) through which coolant (18) is adapted to flow for cooling the saw-blade (1) during sawing. For efficient direct cooling of the saw portions (8, 9) and continuous cleaning thereof during sawing, the space (14) extends up to the two saw portion (8, 9) and is open between them in order, on one hand, to conduct coolant (18) to the saw portions (8, 9) for cooling them, and, on the other hand, to cause coolant (18) to emerge between the saw portions (8, 9) for carrying off bone residues or other saw residues in a direction away from the saw portions (8, 9).
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: February 11, 1992
    Assignee: MIT AB
    Inventors: Leif E. S. H. Ryd, Anders O. Bertilsson-Lindstrand, Soren Toksvik-Larsen
  • Patent number: 4986826
    Abstract: The removal of prosthetic cement from the medullary canal of a patient's long bone such as the femur during replacement of a joint prosthesis.
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: January 22, 1991
    Inventor: Gregory J. Roger
  • Patent number: 4985031
    Abstract: An osteotomy blade saw is provided in left-offset and right-offset embodiments for performing sagittal ramus osteotomies. The blade saw has first and second straight arm portions forming an obtuse angle between them, the end of the second arm terminating in a neck portion which angles acutely away from the plane containing the arms and terminates in an end portion on which a cutting blade is mounted. The blade lies in a plane parallel to the plane containing the arms and is offset to the right and left depending on the embodiment. Supplying reciprocating linear motion to the first arm allows the saw to be used in cutting bone. The blade saw in its two preferred embodiments can be used to score and cut the underside of the right and left inferior borders of the mandible, respectively, through incisions inside the mouth.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: January 15, 1991
    Assignee: Techmedica, Inc.
    Inventors: Rick A. Buss, Wilbur M. Davis
  • Patent number: RE36269
    Abstract: A saw blade retention system for retaining a saw blade to a reciprocating saw includes a shaft connected to the saw for reciprocation and having a slot for receiving the saw blade. The saw blade retention system also includes a chuck disposed about the shaft and having a slot aligned with the slot in the shaft in an unlocked position for allowing the saw blade to be disposed in the slot for the shaft. The saw blade retention system further includes a cam-type mechanism for allowing the chuck to rotate angularly relative to the saw blade and shaft to a locked position to prevent the saw blade from exiting the slots and for allowing the chuck to move axially relative to the shaft to prevent axial movement of the saw blade between the chuck and the shaft. Complementary inclined surfaces are provided on the blade and the chuck to center the blade relative to its intended path of reciprocation.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: August 17, 1999
    Assignee: Minnesota Mining And Manufacturing Company
    Inventor: David W. Wright