Abstract: A power operated trimming tool including a head assembly affixed to a handle assembly. The head assembly includes a frame body supporting a feed roll, a blade, a blade support and a blade retainer plate. The frame body includes an interface portion affixed to the handle assembly and a support portion extending from the interface portion. The blade support includes a cross member defining a blade support plate receiving the blade. The blade retainer plate is pivotally coupled to the frame body, in a first position, the blade retainer plate overlies the blade and, in a second position, the blade retainer plate is spaced from the blade. An in-line, clutch engagement assembly provides a pair of clutch engagement plates coupled between a flexible shaft drive transmission and a driver assembly insertable into the handle assembly of the tool to provide one-handed actuation and de-actuation of the feed roll.

Abstract: A power operated trimming tool including a head assembly affixed to a handle assembly. The head assembly includes a frame body supporting a feed roll, a blade, a blade support and a blade retainer plate. The frame body includes an interface portion affixed to the handle assembly and a support portion extending from the interface portion. The blade support includes a cross member defining a blade support plate receiving the blade. The blade retainer plate is pivotally coupled to the frame body, in a first position, the blade retainer plate overlies the blade and, in a second position, the blade retainer plate is spaced from the blade. An in-line, clutch engagement assembly provides a pair of clutch engagement plates coupled between a flexible shaft drive transmission and a driver assembly insertable into the handle assembly of the tool to provide one-handed actuation and de-actuation of the feed roll.

Abstract: An exemplary hand-held, power operated rotary knife dermatome comprises a blade housing assembly and a depth gauge assembly. The blade housing assembly includes an annular blade housing and a blade lock ring for rotatably supporting an annular rotary knife blade. The annular blade housing includes a shield extending radially inwardly from a blade receiving body and including an inner wall defining a tissue directing surface, the tissue directing surface including a first tissue guide surface extending upwardly from a lower end of the shield, the first tissue guide surface extending substantially parallel to the blade housing axially extending center line. The blade receiving body includes an annular blade channel extending axially upwardly from a lower surface of the blade receiving body, a bearing surface axially spaced from a lower surface of the blade receiving body, and a threaded portion formed on the outer surface of the annular blade housing.

Abstract: A blade housing assembly for a power operated rotary knife including a split blade housing and a cam mechanism for changing a blade housing diameter between blade supporting and blade changing positions. The split blade housing includes an annular blade support section, a mounting section and a split extending through the mounting section and an inner wall of the blade support section and defining a split distance between first and second circumferential ends of the inner wall. The split includes a radial split section and an angled split section adjacent the inner wall. The mounting section includes first and second body portions on opposite sides of the split. The cam mechanism includes a cam plate bridging the first and second body portions and a cam member rotatably supported by the cam plate. The cam member is rotatable between closed and open positions to change the blade housing diameter.

Abstract: An exemplary hand-held, power operated rotary knife dermatome comprises a blade housing assembly and a depth gauge assembly. The blade housing assembly includes an annular blade housing and a blade lock ring for rotatably supporting an annular rotary knife blade. The annular blade housing includes a shield extending radially inwardly from a blade receiving body and including an inner wall defining a tissue directing surface, the tissue directing surface including a first tissue guide surface extending upwardly from a lower end of the shield, the first tissue guide surface extending substantially parallel to the blade housing axially extending center line. The blade receiving body includes an annular blade channel extending axially upwardly from a lower surface of the blade receiving body, a bearing surface axially spaced from a lower surface of the blade receiving body, and a threaded portion formed on the outer surface of the annular blade housing.

Abstract: A blade housing assembly for a power operated rotary knife including a split blade housing and a cam mechanism for changing a blade housing diameter between blade supporting and blade changing positions. The split blade housing includes an annular blade support section, a mounting section and a split extending through the mounting section and an inner wall of the blade support section and defining a split distance between first and second circumferential ends of the inner wall. The split includes a radial split section and an angled split section adjacent the inner wall. The mounting section includes first and second body portions on opposite sides of the split. The cam mechanism includes a cam plate bridging the first and second body portions and a cam member rotatably supported by the cam plate. The cam member is rotatable between closed and open positions to change the blade housing diameter.

Abstract: A blade housing assembly for a power operated rotary knife including a split blade housing and a cam mechanism for changing a blade housing diameter between blade supporting and blade changing positions. The split blade housing includes an annular blade support section, a mounting section and a split extending through the mounting section and an inner wall of the blade support section and defining a split distance between first and second circumferential ends of the inner wall. The split includes a radial split section and an angled split section adjacent the inner wall. The mounting section includes first and second body portions on opposite sides of the split. The cam mechanism includes a cam plate bridging the first and second body portions and a cam member rotatably supported by the cam plate. The cam member is rotatable between closed and open positions to change the blade housing diameter.

Abstract: A combination (2290) of an annular rotary knife blade (2300) and blade housing assembly (2400) for a power operated dermatome (2000). The rotary knife blade includes an inner wall (2310) defining an interior region (2301) and including a lower tissue-directing surface (2370) adjacent a cutting edge (2360) and a radially recessed upper portion (2380). The blade housing assembly includes a blade housing (2410) having a first end (2412) and an axially spaced apart second end (2414) and an inner wall (2416) and a radially spaced apart outer wall (2418). The blade housing includes a blade housing cover (2450) extending from the inner wall into the blade interior region. The blade housing cover includes a shield (2470) extending along the recessed upper portion of the rotary knife blade inner wall and having an inner surface (2472) adjacent and continuing the lower tissue-directing surface of the rotary knife blade inner wall.

Abstract: A combination (2290) of an annular rotary knife blade (2300) and blade housing assembly (2400) for a power operated dermatome (2000). The rotary knife blade includes an inner wall (2310) defining an interior region (2301) and including a lower tissue-directing surface (2370) adjacent a cutting edge (2360) and a radially recessed upper portion (2380). The blade housing assembly includes a blade housing (2410) having a first end (2412) and an axially spaced apart second end (2414) and an inner wall (2416) and a radially spaced apart outer wall (2418). The blade housing includes a blade housing cover (2450) extending from the inner wall into the blade interior region. The blade housing cover includes a shield (2470) extending along the recessed upper portion of the rotary knife blade inner wall and having an inner surface (2472) adjacent and continuing the lower tissue-directing surface of the rotary knife blade inner wall.

Abstract: An exemplary hand-held, power operated dermatome comprises a blade housing assembly, a skin deflector, an annular rotary knife blade, a cutting plane, and a depth gauge. The rotary knife blade has an inner region, an upper body portion, and a lower cutting portion. The lower cutting portion has an inner surface, an outer surface, and a bottom surface. A cutting edge of the rotary knife blade is formed by the intersection between the inner surface and the bottom surface of the lower cutting portion. The cutting plane of the dermatome is defined by the cutting edge of the rotary knife blade, and the depth gauge is disposed within the inner region of the rotary knife blade.

Abstract: An exemplary hand-held, power operated rotary knife dermatome comprises a blade housing assembly and a depth gauge assembly. The blade housing assembly includes an annular blade housing and a blade lock ring for rotatably supporting an annular rotary knife blade. The annular blade housing includes a shield extending radially inwardly from a blade receiving body and including an inner wall defining a tissue directing surface, the tissue directing surface including a first tissue guide surface extending upwardly from a lower end of the shield, the first tissue guide surface extending substantially parallel to the blade housing axially extending center line. The blade receiving body includes an annular blade channel extending axially upwardly from a lower surface of the blade receiving body, a bearing surface axially spaced from a lower surface of the blade receiving body, and a threaded portion formed on the outer surface of the annular blade housing.

Abstract: A totally implantable method for occluding the urethra or bladder neck utilizing an occlusive cuff connected to a control mechanism via a conduit tube. The occlusive cuff is reversibly changed from an activated (occlusive condition) to a deactivated (non-occlusive) condition by depressing a deactivation button contained within a resilient, elastomeric sheath surrounding the control mechanism. The occlusive condition is once again obtained by depressing an activation button also situated within the resilient sheath. In the occlusive condition, a preset tension is applied to a flexible diaphragm through a tensioning suture by a constant force spring contained within the control mechanism. This tension is translated into an occlusive pressure applied to the urethra or bladder neck sufficient to prevent urinary leakage.

Abstract: A head assembly (200) for a power operated dermatome (100) including a frame body or housing (202) supporting a gear train (520), a blade housing assembly (400), an annular rotary knife blade (300) supported for rotation about an axis of rotation (R) by the blade housing assembly (400). The rotary knife blade (300) includes an inner wall (365) defining an interior region (301) and has a cutting edge (360) at one end (368) defining a cutting plane (CP). The head assembly (200) further includes a depth gauge assembly (600) including a depth gauge support (602) and a depth gauge (620) including a depth gauge plate (622) supported by the depth gauge support (602) for axial movement along the axis of rotation (R), the depth gauge plate (622) extending into the interior region (301) and the depth gauge support (602) attached to and extending from the frame body (202).

Abstract: An exemplary hand-held, power operated dermatome comprises a blade housing assembly, a skin deflector, an annular rotary knife blade, a cutting plane, and a depth gauge. The rotary knife blade has an inner region, an upper body portion, and a lower cutting portion. The lower cutting portion has an inner surface, an outer surface, and a bottom surface. A cutting edge of the rotary knife blade is formed by the intersection between the inner surface and the bottom surface of the lower cutting portion. The cutting plane of the dermatome is defined by the cutting edge of the rotary knife blade, and the depth gauge is disposed within the inner region of the rotary knife blade.

Abstract: An exemplary hand-held, power operated dermatome comprises a blade housing assembly, a skin deflector, an annular rotary knife blade, a cutting plane, and a depth gauge. Pulling the dermatome across a skin surface while maintaining an acute angle between 30 and 45 degrees between the cutting plane and a skin surface requires at least 30 percent less force than pushing a standard oscillating flat-plane dermatome across a skin surface.

Abstract: A totally implantable method for occluding the urethra or bladder neck utilizing an occlusive cuff connected to a control mechanism via a conduit tube. The occlusive cuff is reversibly changed from an activated (occlusive condition) to a de-activated (non-occlusive) condition by depressing a deactivation button contained within a resilient, elastomeric sheath surrounding the control mechanism. The occlusive condition is once again obtained by depressing an activation button also situated within the resilient sheath. In the occlusive condition, a preset tension is applied to a flexible diaphragm through a tensioning suture by a constant force spring contained within the control mechanism. This tension is translated into an occlusive pressure applied to the urethra or bladder neck sufficient to prevent urinary leakage.

Abstract: A hand-held, power operated debridement tool (2000) includes a rotary disk knife blade (2300) with a cutting edge (2360) on an outer peripheral edge (2362) of the knife blade, the cutting edge defining a cutting plane (CP) of the disk knife blade. The debridement tool further includes an annular skin guide (2700) including an outer wall (2716) defining a skin contact surface (2720) disposed above the cutting plane (CP) of the disk knife blade and positioned radially inwardly of the disk knife blade cutting edge to receive and direct an excised layer of skin tissue (EST) cut by the disk knife blade upwardly away from the blade cutting edge. The debridement tool additionally includes an axially adjustable depth gauge (2620) including a depth gauge plate (2622) disposed above the cutting plane of the disk knife blade and positioned radially outwardly of the cutting edge of the disk knife blade.

Abstract: A totally implantable method for occluding the urethra or bladder neck utilizing an occlusive cuff connected to a control mechanism via a conduit tube. The occlusive cuff is reversibly changed from an activated (occlusive condition) to a deactivated (non-occlusive) condition by depressing a deactivation button contained within a resilient, elastomeric sheath surrounding the control mechanism. The occlusive condition is once again obtained by depressing an activation button also situated within the resilient sheath. In the occlusive condition, a preset tension is applied to a flexible diaphragm through a tensioning suture by a constant force spring contained within the control mechanism. This tension is translated into an occlusive pressure applied to the urethra or bladder neck sufficient to prevent urinary leakage.

Abstract: An implantable vessel occlusive device and method for occluding a vessel are described, for example to occlude the urethra or bladder neck. The devices and methods described utilize an occlusive member connected to a control mechanism. The occlusive member is reversibly changed from a non-occlusive condition to an occlusive condition, for example by depressing an activation button contained within a resilient, elastomeric cover surrounding the control mechanism. In the occlusive position, an initial tension is applied to the occlusive member through a tensioning suture. The tension is translated into an occlusive pressure applied to the urethra or bladder neck that is sufficient to prevent urinary leakage. The non-occlusive position can be obtained by depressing the de-activation button. The occlusive member is constructed to allow elution of drugs, such as may be required to combat infection or tissue encapsulation from its surface.

Abstract: A combination (2290) of an annular rotary knife blade (2300) and blade housing assembly (2400) for a power operated dermatome (2000). The rotary knife blade includes an inner wall (2310) defining an interior region (2301) and including a lower tissue-directing surface (2370) adjacent a cutting edge (2360) and a radially recessed upper portion (2380). The blade housing assembly includes a blade housing (2410) having a first end (2412) and an axially spaced apart second end (2414) and an inner wall (2416) and a radially spaced apart outer wall (2418). The blade housing includes a blade housing cover (2450) extending from the inner wall into the blade interior region. The blade housing cover includes a shield (2470) extending along the recessed upper portion of the rotary knife blade inner wall and having an inner surface (2472) adjacent and continuing the lower tissue-directing surface of the rotary knife blade inner wall.