55 results about "Blunt dissection" patented technology

An ultrasonic surgical instrument having a handle with a finger actuator, and more particularly, an ultrasonic surgical device adapted to be held by a surgeon and fingers-operated with precise movements while opening and closing an ultrasonic instrument while meeting the ergonomic requirements of the surgeon with regard to comfort and imparting the surgeon with an enhanced dextral control for easy maneuverability of the instrument. The instrument incorporates a thimble-shaped lever at the distal end of the handle for actuating the clamp arm of the ultrasonic surgical instrument, and votator structure for selective rotation of the surgical device whereby the ergonomic thimble-shaped lever and pencil grip provide the physician with an improved degree of control, greater comfort in manipulating the instrument, and the ability to perform blunt dissections.

Methods and devices for treating female stress urinary incontinence are disclosed. The methods include transvaginally accessing the pelvic cavity and introducing a suburethral sling into the retropubic space. In some embodiments the ends of the sling are attached to an anatomical support structure. In other embodiments, the ends of the suburethral sling are not attached to an anatomical support structure. The devices include a surgical instrument for blunt dissection of the pelvic cavity which includes a curved shaft and a blunt distal end. A hook deployment device may optionally be attached to the surgical instrument.

A balloon endoscope device having a shaft with a distal end that allows for blunt dissection is provided. The shaft utilizes a plurality of separately inflatable balloons that alone or together with exterior functional channels (e.g., instrument channels, air channels, water channels, suction channels) circumferentially surround the distal end of the shaft to better position and maneuver the distal end as it advances through tissue planes and once it reaches a target working space or operative site.

A surgical instrument for dissecting tissue and inserting a surgical implant device thereat includes first and second blades which are pivotally joined together. Each of the first and second blades has an elongated length which includes a first section and a second section, the first section of each blade including a free end having a flattened tip for blunt dissection of tissue and a non-cutting, clamping portion situated adjacent to and encompassing the flattened tip for selectively grasping a surgical implant device. The second section of each blade includes a finger ring for grasping and manipulation by a surgeon. The blades are pivotally joined together at the junctures of the first and second sections to allow the first and second blades to pivotally move with respect to one another within a plane of pivotal movement. The non-cutting, clamping portions of each blade has a clamping face, and the clamping faces of the blades reside in parallel planes and are angled to the plane of pivotal movement of the blades.

A handheld medical instrument designed for efficient, atraumatic blunt tissue dissection and / or elevation during surgery. The instrument generally comprises an elongated shaft having a cottonoid or similar disposable dissection device at one or both ends. Attachment to the cottonoid may be direct or the shaft may include grasping constructs designed to grasp the cottonoid or to grasp a support structure which is attached to the dissection device. The devices may have reusable components or may be disposable.

A surgical instrument is provided that comprises at least three, and preferably four forceps elements with hook-shaped distal sections having free ends and associated proximal sections that are connected to actuators for moving the distal sections. The distal sections are shaped and movably disposed in such a way that they can be brought together to form a single hook, which can be used in particular for blunt dissection, and can be combined in groups, for example groups of two, to form at least one pair of forceps which can be moved with respect to one another in order to grasp tissue or spread it apart. This design allows a single instrument to be used for many different dissection procedures.

An electrosurgical Cobb elevator instrument, a soft tissue dissection and / or retraction tool, can be used with and without suction, and is capable of delivering monopolar or bipolar RF energy for cutting and coagulating soft tissue. The device is capable of footswitch or handswitch activation. The tool has a spoon-shaped edge that is preferably sharp to provide blunt dissection in addition to the energy-driven dissection. The instrument of the invention could be used in any procedure that requires soft tissue dissection and / or coagulation.

An apparatus for use in fascial cleft surgery adapted to perform blunt dissection between two layers of anatomically named fascia. The dissection performed by the apparatus extends to the limits of anatomic space defined by fusion of said two layers of fascia in a minimally invasive manner. The apparatus is formed of a hollow tube body member including a malleable introducing flange having a spoonbill-like shape. Further, the apparatus includes an elastic dissection balloon movably positioned within the applicator. The dissection balloon is reversibly expandable between a deflated condition and an expanded condition and is movable from a first storage position within the hollow tube body of the applicator to a position exterior thereof. The dissection balloon is formed of a chosen elastic material having a tensile strength less than the tensile strength of the points of fusion between two layers of fascia such that the dissection balloon fails prior to achieving pressures that would destroy the anatomic boundaries of the fascial cleft such that a working space is demonstrated not created. The apparatus also includes a gripping handle and introducing rod slideably positioned within said applicator for positioning said dissection balloon exterior said applicator to within an anatomic space for subsequent inflation and deflation. Finally, a fill tube extends through the hollow introducing rod to the dissection balloon and operably associated therewith for inflating and deflating the dissection balloon.

A dissector including a body, a first arm, a second arm, and a string and methods for use thereof. The first arm extending from the body towards a distal end thereof and the second arm extending from the body towards a distal end thereof. One end of the string is coupled to the first arm adjacent the distal end thereof and the other end of the string is coupled to the second arm adjacent the distal end thereof. The first and second arms have an expanded configuration such that the string is taut and have a collapsed configuration such that the string is slack. The string is configured to dissect tissue when the first and second arms are in the expanded configuration. The string may oscillate to dissect tissue. The distal ends of the first and second arms may atraumatically dissect tissue.

A dissector including a body, a first arm, a second arm, and a string. The first arm extending from the body towards a distal end thereof and the second arm extending from the body towards a distal end thereof. One end of the string is coupled to the first arm adjacent the distal end thereof and the other end of the string is coupled to the second arm adjacent the distal end thereof. The first and second arms have an expanded configuration such that the string is taut and have a collapsed configuration such that the string is slack. The string is configured to dissect tissue when the first and second arms are in the expanded configuration. The string may oscillate to dissect tissue. The distal ends of the first and second arms may atraumatically dissect tissue.

The invention relates to the technical field of biomedical research, and in particular relates to a construction method of a bone defect model manufactured by adopting osteotomy on bilateral fibula ofmacaca fascicularis. The technical scheme is as follows: the method comprises the following steps: under the aseptic condition, carrying out anesthetization on an animal, on the limb under the surgery, processing a small stabbing incision at the tail end of the fibula by adopting a scalpel, inserting a kirschner wire from the tail end of the fibula, and after fixing, inserting the kirschner wireinto a marrow cavity of the fibula for 2cm; and later, processing an incision on the fibula, carrying out blunt dissection on the muscle on the fibula, so that the fibula is exposed, pulling open thesoft tissue surrounding the fibula, marking the part needing osteotomy, cutting off the part with the length being 1.5cm on the fibula, after the osteotomy is completed, checking the bone breakage end, further inserting the kirschner wire placed at the tail end of the fibula so that the kirschner wire stretches over the cut-off part, cutting off the part, exposed out of the far-end fibula, of thekirschner wire, and pegging the broken end after cutting into the fibula by using a punch and a hammer for the orthopedics department. For the method provided by the invention, experimental data morerelevant to human beings is provided for exploring the disease cause of bone defect and providing an effective clinical treatment scheme.

A vessel dissector for harvesting a target vessel has a tubular member carrying a blunt transparent tip with a terminus for blunt dissection of tissue and a base affixed to the tubular member. An active ring set has first and second ring segments mounted to distal ends of respective manipulator bars in the tubular member. The ring segments juxtapose to define a closed loop with an inner diameter larger than the outside diameter of the tip base. The ring segments are movable between a retracted position nested at the base and respective extended positions distally forward of the terminus. At least one of the ring segments is energizable to cut and cauterize a cylindrical pedicle including the target vessel. The ring segments independently extend longitudinally to provide a variable gap between the ring segments to capture, cut, and cauterize side branches to the target vessel between the ring segments.