Smith & Nephew Dyonics, Inc.

Dyonics, Inc.

Other

Douglas D Sjostrom

Terry L Whipple

Lanny L Johnson

Parviz Kambin

Leonard J Bonnell

Edward H McHugh

Edvin Zemgals

A forceps having forceps jaws operated by manually operable handle also has a cable connected between the forceps jaws and a manually operable actuator such that the forceps jaws are swung to a desired position when the actuator is operated.

Deflecting forceps

A surgical device including a handpiece adapted to receive a surgical tool, a motor driven drive shaft for rotating the tool about an axis, a static seal element sealed to the motor assembly, and a dynamic seal element sealed to the drive shaft, the seal elements having mating sealing portions defining a face seal in a surface transverse to the axis of rotation of the drive shaft.

Motor driven hand piece for a surgical tool

A needle guide is provided which includes a hub and a needle connected to the hub. A stylet may also be provided for insertion into the hollow interior of the needle to aid in the insertion of the needle through tissue. The needle has a transverse breaking section, preferably a groove, adjacent to the hub. The breaking section is configured so that the needle will break cleanly in two at the breaking section when the hub is bent back and forth relative to the portion of the needle distal to the breaking section. An alternative embodiment of the needle guide provides a handle which extends from the hub over the needle. A hinge is provided in alignment with the needle breaking section to permit the handle to be flexed relative to the hub when the hub is moved back and forth in the manner described.

Breakable needle and hinged needle guide

An arthroscopic surgical instrument consists of an outer stationary member having a distal aperture, the wall of the outer member defining a first cutting edge at the aperture; an internal movable member disposed within the outer member, adapted to be power driven and having a second cutting edge arranged to move toward and closely past the first cutting edge in rapid, repetitive fashion to sever tissue. The instrument further includes a table extension provided at the aperture, projecting outwardly from the general contour of the body of the outer stationary member. The table extension is constructed and arranged to engage tissue against which the operator urges the instrument, in a manner to improve the repetitive cutting action. In one embodiment, the internal movable member disposed within the outer member has at least a pair of second cutting edges arranged to move sequentially toward and closely past fixed cutting edge to sever tissue at a shearing point, each second cutting edge defining one or more cutting points arranged longitudinally along the second cutting edge, and a cutting point of one second cutting edge being offset longitudinally from a cutting point of the next following second cutting edge, whereby the sequential second cutting edges have different cutting patterns.

Arthroscopic surgical instrument

A single-motor surgical system for operating a set of different surgical devices having different operational limits, consisting of a handpiece containing the motor and adapted to alternately receive a proximal portion of each of the surgical devices, each device having an indicator on its proximal portion that denotes its operational limit, the handpiece including an automatic sensor for sensing the indicator, and controls responsive to the sensor to automatically establish the operational limit of the motor in accordance with the respective surgical device received by the handpiece. In preferred embodiments, the system includes an arthroscopic handpiece as above and has a plurality of surgical devices adapted to receive different removable rotary tips that have different operational limits of rotation, each of the plurality of devices having a vacuum passage connectible at one end to a vacuum passage of the respective rotary tip and adjacent the other end, to a vacuum passage associated with the handpiece, whereby tissue severed by the rotary tip can be removed from the surgical site, the surgical device indicating to the sensor the rotational limits of the tips which the devices are adapted to receive.

Surgical system for powered instruments

Cutting-suctioning instrument having an elongated support and first and second, opposed distal jaws, at least one of which is pivotable about a transverse axis and adapted to be closed by an actuator, and a suction throat defined between proximal portions of the two jaws. Preferably, a sliding inner tube, which defines the suction passage, serves as actuator to move the pivotable jaw. As a cutter for meniscal cartilage, a hollow tube defining a tissue-fragment transport, suction passage is arranged to communicate through the open throat with the region between the jaws to receive cut tissue while suction is associated with the proximal end of the instrument for enabling tissue to be drawn from between the jaws, through the throat and thence through the transport passage while the instrument remains in situ for repeated cutting. Preferred embodiments of the instrument are especially useful in arthroscopic surgery.

Surgical instrument

Cutting-suctioning instrument having an elongated support and first and second, opposed distal jaws, at least one of which is pivotable about a transverse axis and adapted to be closed by an actuator, and a suction throat defined between proximal portions of the two jaws. Preferably, a sliding inner tube, which defines the suction passage, serves as actuator to move the pivotable jaw. As a cutter for meniscal cartilage, a hollow tube defining a tissue-fragment transport, suction passage is arranged to communicate through the open throat with the region between the jaws to receive cut tissue while suction is associated with the proximal end of the instrument for enabling tissue to be drawn from between the jaws, through the throat and then through the transport passage while the instrument remains in situ for repeated cutting. Preferred embodiments of the instrument are especially useful in arthroscopic surgery.

A surgical instrument useful in joint surgery for instance closed surgery of the knee. When in the form of a rotary vacuum shaver it comprises an external stationary tube having a side-facing, axially extending shaving port and an internal rotary blade capable of rotating at a slow speed, of the order of 200 rpm or below. Radial bearing portions at both proximal and distal ends radially support the blade in shearing relation to the external tube. A vacuum conduit draws fluid and articles to be shaved into the shaving port, and draws discrete shavings through the instrument, while the blade is driven at shearing speeds.

Growing community of inventors

Wakefield, MA, United States of America

Douglas D Sjostrom