Abstract: A needle assembly for medical or surgical use is disclosed, such as for hemodialysis. A representative needle assembly comprises an outer needle assembly and an integral needle tip protector. A representative outer needle assembly comprises: an outer needle comprising: a first lumen; a first aperture with a sharp needle tip at a first distal end of the outer needle; and a second aperture arranged opposite the first aperture. In another embodiment, the outer needle has a longitudinal slot and the integral needle tip protector includes a sliding connector which is slidable in the longitudinal slot. The integral needle tip protector is arranged within the first lumen and moveable between a retracted configuration and an extended configuration, and comprises: a needle tip cover arranged to shield the sharp needle tip in the extended configuration, the needle tip cover having a smooth or beveled distal surface forming a blunt tip.

Abstract: A surgical apparatus comprises a body, a shaft assembly, and an end effector. The end effector comprises a clamp arm and an ultrasonic blade in acoustic communication with an ultrasonic transducer via an acoustic waveguide that extends through the shaft assembly. The clamp arm is configured to pivot about a first pivot point toward and away from the ultrasonic blade along a first angular path from a first position to a second position to thereby provide a tissue sealing mode of operation. The clamp arm is further configured to pivot about a second pivot point toward and away from the ultrasonic blade along second angular path from the second position to a third position to thereby provide a tissue cutting and sealing mode of operation. The second pivot point is proximal to the first pivot point.

Abstract: In some embodiments, a vitrectomy probe may include an inner cutting tube reciprocating in an outer tube. The outer tube includes a side port and the inner tube includes a distal cutting port, and, in some embodiments, an additional side port. In some embodiments, the inner tube may also include a flat upper edge that cuts across the outer tube side port. In some embodiments, a diaphragm drives the inner tube and may have an open-stroke side with a lower hardness material than a closed-stroke side. In some embodiments, an aspiration tube coupled to the vitrectomy probe may include a first aspiration tubing and a second aspiration tubing with a lower hardness than the first aspiration tubing. In some embodiments, the vitrectomy probe may be coupled to pneumatic tubing that is stepped or tapered.

Abstract: A surgical instrument includes a shaft having a proximal end and a distal end and end effector coupled to the distal end of the shaft. An electrical transmission conduit extends along the shaft from the proximal end to the distal end and is configured to deliver electrical energy to energize the end effector. A connector assembly electrically couples the electrical transmission conduit to the end effector, and the end effector is pivotably coupled to the connector assembly. In another aspect, a surgical instrument includes a pin, an electrically conductive connector including a contact portion and an attachment, the contact portion surrounding the pin. An electrical conduit is electrically coupled to the attachment of the connector. An electrically conductive jaw including an aperture is pivotable around the contact portion, and the contact portion electrically contacts the jaw at the aperture of the jaw.

Abstract: An ultrasonic instrument includes a body, an actuation assembly, a shaft assembly, and an end effector. The actuation assembly includes a mode selection member and an activation member. The shaft assembly extends distally from the body. The shaft assembly includes an acoustic waveguide. The end effector includes an ultrasonic blade. The ultrasonic blade is in acoustic communication with the acoustic waveguide. The end effector is configured to be activated in a first activation mode in response to actuation of the activation member when the mode selection member is in a first position. The end effector is configured to be activated in a second activation mode in response to actuation of the activation member when the mode selection member is in a second position.

Abstract: Disclosed herein is a medical device. The medical device includes a blade tube section, a solenoid, and a mechanical arrangement. The blade tube section includes an outer blade tube, an inner blade tube, and a cutting window at a distal end of the blade tube section. The solenoid is offset from a central axis of the blade tube section. The mechanical arrangement is between the inner blade tube and the solenoid.

Abstract: Various embodiments disclosed relate to drug-coated balloon catheters for treating, preventing, or reducing the recurrence of a stricture and/or cancer, or for treating benign prostatic hyperplasia (BPH), in a non-vascular body lumen and methods of using the same. A drug-coated balloon catheter for delivering a therapeutic agent to a target site of a body lumen stricture includes an elongated balloon having a main diameter. The balloon catheter includes a coating layer overlying an exterior surface of the balloon. The coating layer includes one or more water-soluble additives and an initial drug load of a therapeutic agent. In some embodiments, the balloon catheter includes a length-control mechanism which stretches and elongates the balloon when it is in a deflated state, giving the balloon a smaller cross-sectional deflated profile for tracking through the body lumen and for removal after treatment.

Abstract: A surgical instrument includes a housing including an actuator disposed thereon and an elongated shaft extending therefrom. The elongated shaft includes an end effector assembly including a pair of opposing jaw members including a knife channel defined therein. An articulation section is disposed between the housing and the end effector assembly and is configured to articulate the end effector assembly upon actuation of the actuator, the articulating section and a proximal end of the knife channel defining a first distance therebetween. A knife assembly includes a knife having a length, the proximal end including an engagement feature disposed thereon. A knife drive rod is configured to engage the engagement feature to secure the knife drive rod to the knife such that the distal end of the knife extends beyond the engagement feature and wherein the knife length is less than the length of the first distance.

Abstract: A forceps includes a drive assembly and an end effector assembly having first and second jaw members movable between a spaced-apart position, a first approximated position, and a second approximated position. The drive assembly includes a drive housing and a drive bar. The proximal end of the drive bar is coupled to the drive housing, while the distal end of the drive bar is coupled to at least one of the jaw members. The drive housing and the drive bar are selectively movable in conjunction with one another between a first position and a second position to move the jaw members between the spaced-apart position and the first approximated position. The drive assembly is selectively activatable to move the drive bar independent of the drive housing from the second position to a third position to move the jaw members from the first approximated position to the second approximated position.

Abstract: A surgical instrument includes a support frame defining first and second non-circular apertures each defining at least one stop surface, and a jaw member having a structural body including a proximal flange portion and an elongated distal portion extending distally from the proximal flange portion. A jaw liner is engaged with the elongated distal portion and defines a tissue-contacting surface. A first and a second pivot boss protrude from opposite sides of the proximal flange portion and at least partially into the first and second non-circular apertures, respectively. Each pivot boss is non-circular and defines at least one stop surface configured to mate with the at least one stop surface of the respective non-circular aperture to stop rotation of the jaw member before the jaw liner is forced into contact with a blade from the surgical instrument. A surgical instrument including such a jaw member is also provided.

Abstract: A tissue dissector includes a handle portion and a head portion. The handle portion includes an actuation assembly having an actuator. The head portion includes an annular body having a blade assembly rotatably supported in the annular body. The blade assembly includes a blade member defining an aperture configured to receive tissue therethrough. The blade member is operatively coupled with the actuator for rotation about a central axis defined by the aperture. The handle portion and the head portion define a longitudinal axis that is disposed at an angle relative to the central axis.

Abstract: An intra-cardiac myocardial resection device comprises an outer-layer protective sleeve and an inner-layer scalpel sleeve. An upper sidewall of the outer-layer protective sleeve is provided with a resection window, and an upper edge of the resection window is provided with a downward hook; and a sidewall of the outer-layer protective sleeve is provided with an axial sliding groove. The inner-layer scalpel sleeve is mounted in the outer-layer protective sleeve, and an upper end of the inner-layer scalpel sleeve is provided with an annular blade having an upward edge. A sidewall of the inner-layer scalpel sleeve is provided with a hollow operation handle, and the hollow operation handle extends out of the sliding groove. During a surgery, performed by using the intra-cardiac myocardial resection device, a resection extent and a resection effect can be monitored, and the surgical treatment effect for such patients is improved.

Abstract: Systems and methods for harvesting tissue from a donor site include first and second conduits through which a flexible saw component is guided. Certain embodiments include a mechanism which facilitates insertion of a flexible cutting member component parallel to a transverse plane and slicing a graft parallel to the coronal plane to extract the graft.

Abstract: A trocar assembly for releasable engagement with an adapter assembly of a surgical stapling instrument includes a trocar mechanism that includes a trocar member that is at least one of rotatable or articulable relative to a housing of the trocar assembly.

Abstract: A unique vitrectomy probe with an interfacing component for attenuating vibrations during a vitrectomy procedure. The component may be of elastomeric construction tailored to attenuating the vibrations. Additionally, the component may strategically reside at an interface between the housing that accommodates moving parts of the probe and an ergonomic shell meant for resting at purlicue a surgeon's hand. In this way, vibrations are largely attenuated before reaching the shell and distracting the surgeon. Additionally, the shell, housing and interface are architecturally constructed for user-friendly shell removal for surgeons wishing to perform vitrectomy procedures in absence of the shell.

Abstract: Methods and apparatuses for automatically switching different aspiration levels to an ocular probe are disclosed herein. The probe may be a phacoemulsification probe. A first aspiration level, supplied by a first pump, may be applied to the probe simultaneously with ultrasonic energy. A second aspiration level, supplied by a second pump, may be automatically switched from the first aspiration level. Control feed back of the pumps may be varied according to set thresholds.

Abstract: An atherectomy catheter includes an elongate catheter body, a cutter at a distal end of the catheter body, and a nosecone attached to a distal end of the catheter body. The cutter is configured to excise tissue from the body. The nosecone is configured to hold tissue excised from the cutter. The nosecone includes a distal section, a proximal section, and a connection mechanism that is configured to allow the distal section to attach and detach from the proximal section during use. The distal section includes a plug configured to sit within an inner diameter of the proximal section when the proximal section is connected to the distal section.

Abstract: A system and method for harvesting autologous tissue, mincing it into fragments that are visible and measureable when filtered, and delivering a portion of the tissue back into the patient without the need to directly touch the tissue. During the same surgical procedure, the tissue can be mixed with a biocompatible agent before introduction into the repair site.

Abstract: An ultrasonic surgical instrument includes an elongated assembly releasably engagable with an ultrasonic transducer and including a waveguide having a blade at a distal end and a torque adapter towards a proximal end. Fixed and movable sleeves are disposed about the waveguide and support and operably couple to a jaw member at the respective distal ends thereof. A drive tube is fixed to the movable sleeve such that translation of the drive tube pivots the jaw member relative to the blade. A torque housing is slidably disposed about the drive tube, longitudinally fixed about the fixed sleeve, and fixedly about the torque adapter. A rotation knob is longitudinally fixed about the torque housing and operably coupled to the torque housing such that the torque housing and the rotation knob cooperate to define a torque wrench inhibit application of additional torque to the waveguide above a torque limit.

Abstract: A surgical instrument includes a housing, an end effector assembly, and a shaft. The end effector assembly includes first and second jaw members each defining a curved configuration. At least one of the jaw members is movable relative to the other between a spaced-apart position and an approximated position. The shaft includes a proximal portion coupled with and extending distally from the housing and a distal portion extending distally from the proximal portion and having the end effector assembly coupled thereto at the distal end thereof. The proximal portion defines a circular cross-sectional configuration to facilitate formation of a fluid-tight seal thereabout. The distal portion defines a rectangular cross-sectional configuration configured to facilitate insertion through a cannula.

Abstract: Methods and apparatuses for performing an orthopedic procedure in the sacroiliac region are disclosed. In one form, an aperture is formed that at least partially extends through at least one of an ilium and a sacrum. An undercutting system is inserted into the aperture. The undercutting system includes an insertion apparatus, a probe assembly and a cutting assembly. The probe assembly is moved with respect to the insertion apparatus from a retracted position to an extended position. The probe assembly is manipulated within a joint between the ilium and the sacrum while the probe assembly is in the extended position. The cutting assembly is moved with respect to the insertion apparatus from a retracted position to an extended position. The cutting assembly is manipulated within the joint between the ilium and the sacrum while the cutting assembly is in the extended position to form a fusion region.

Abstract: A tissue resecting end effector includes a housing, a shaft extending from the housing, and a drive assembly operably coupled to the shaft such that a rotational input provided to the drive assembly effects the rotation and reciprocation of the shaft relative to the housing. The assembly includes a proximal portion translationally fixed and rotatably coupled to the housing and configured to receive the rotational input and to rotate relative to the housing in response thereto, a distal portion translationally and rotatably coupled to the housing and operably coupled to the proximal portion such that the rotation of the proximal portion relative to the housing effects rotation and reciprocation of the distal portion relative to the housing to thereby rotate and reciprocate the first shaft relative to the housing, and a seal member disposed on the proximal portion or the distal portion and configured to selectively establish a seal therebetween.

Abstract: A surgical instrument includes an end effector including a first jaw and a second jaw, a drive beam disposed inside the end effector, a first blade, and a second blade. The drive beam is slidably attached to the first jaw. The drive beam includes a cut-out defining a first surface, a second surface, and a vertical strut. The first blade is attached to the first surface and the vertical strut. The second blade is attached to the first blade and the second surface.

Abstract: A disposable tattoo needle cartridge (14) for connecting to a tattoo machine drive unit comprises a cartridge housing (26) and a needle assembly (28) comprising a needle driver connector (36) and at least one needle (16), the needle driver connector (36) being connectable to a needle driver (38) of the tattoo machine drive unit (12) for receiving a reciprocating motion, the needle assembly (28) being slidingly arranged in the tattoo needle cartridge (26) to allow said reciprocating motion along a reciprocation axis (A), wherein the cartridge housing (26) has a front end portion provided with a needle nozzle for allowing the at least one needle (16) to reciprocatingly protrude from the tattoo needle cartridge (14); and a rear end portion (30) configured to be connected to the tattoo machine drive unit (12), wherein the needle driver connector (36) comprises a needle assembly magnet (44) for connecting to a mating drive magnet (46) of the needle driver (38) in a contact-less manner in a radial, with respect to

Abstract: The invention relates to a device for separating tissue parts, wherein the device has two parallel clamping plates, wherein at least one part of one clamping plate can be pivoted away from the other clamping plate in order to receive a tissue part and can be pivoted back in order to fix the tissue part, wherein the device has at least two interconnected blades arranged at an angle to each other or has one curved or kinked blade, wherein the blade or blades is/are insertable and displaceable in guide rails of the clamping plates, and wherein a cutting edge of the blade or blades extends between the clamping plates.

Abstract: A biopsy sampling device comprises a handle with a flexible cannula extending from the handle. The flexible cannula includes: an inner catheter, which defines an opening in a lateral wall surface thereof, and further defines a central lumen in fluid communication with the opening; an outer catheter positioned around and moveable relative to the inner catheter; and a cutting element positioned at a distal end of the outer catheter. The flexible cannula is configured such that a vacuum can be applied through the central lumen of the inner catheter to create a suction that draws a piece of tissue into the opening defined in the lateral wall surface of the inner catheter. The handle is configured to move the inner catheter relative to the outer catheter, such that the cutting element shears and severs the piece of tissue that has been drawn into the opening.

Abstract: An electrosurgical system can include an electrosurgical generator, a feedback circuit or controller, and an electrosurgical tool. The feedback circuit can provide an electrosurgery endpoint by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio/visual performance indicators. The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances.

Abstract: A direction adjustable surgical tissue removal device, including: an insert rod having a stopping step at a front end; a slider slidably coupled to the insert rod, moving forward and backward with respect to the stopping step, and having a punching portion forming a jaw in cooperation with the stopping step; a rotary shaft being a hollow member fixed behind the insert rod and rotated by a user; a pushing rod having a front end fixed to the slider sequentially through the rotary shaft and the insert rod and a rear end extending backward; a spring disposed between the rotary shaft and the rear end of the pushing rod and elastically supporting the pushing rod backward; and a handle accommodating a portion of the rotary shaft and moving the pushing rod forward such that the punching portion is pushed toward the stopping step.

Abstract: An implantable delivery system has an inner shaft (20) with a device-carrying region (28) and an outer shaft (40) surrounding the inner shaft. A sheath (41) at a distal end of the outer shaft covers the device-carrying region when the outer shaft is in an advanced position. A sleeve (50) surrounding the outer shaft is in proximity to the sheath when the sleeve is in an advanced position. After insertion, the sleeve is retracted to increase flexibility of the distal end of the device. A handle (62) includes a control element for retracting the outer shaft and sheath relative to the inner shaft to release the implantable device. The sleeve may be fixed to the body of the handle when the sleeve is retracted. Engagement between the sleeve and an introducer at the insertion site can stabilize the handle and inner shaft against movement relative to the patient during retraction of the outer shaft.

Abstract: A surgical instrument includes a body, an ultrasonic transducer assembly, and a transducer lock having a lock member configured to move between unlocked and locked positions. The transducer assembly is rotatably mounted along a longitudinal axis within the body such that the transducer assembly is configured to selectively rotate about the longitudinal axis. With the lock member in the unlocked position, the transducer assembly is configured to be selectively rotated about the longitudinal axis relative to the body. With the lock member in the locked position, the transducer lock is configured to seize the transducer assembly and inhibit rotation relative to the housing for coupling with an acoustic waveguide. The surgical instrument may also include an integral torque wrench for coupling the acoustic waveguide with a predetermined torque and an integral torque indictor for signaling to a user that the acoustic waveguide is coupled with the predetermined torque.

Abstract: A surgical instrument includes an instrument body, an ultrasonic transducer assembly, and a slip lock having an arrester. The transducer assembly is rotatably mounted along a longitudinal axis within the body such that the transducer assembly is configured to selectively rotate. The arrester is configured to move relative to the ultrasonic transducer assembly between an engaged position and a disengaged position and has a catch portion and a deflectable portion. The catch portion is configured to seize the transducer assembly and selectively inhibit rotation for rotatably coupling with the acoustic waveguide up to a predetermined torque. The deflectable portion is configured to deflect relative to the transducer assembly upon receiving a torque greater than the predetermined torque. Accordingly, the catch portion releases the transducer assembly to slip relative to the catch portion for limiting coupling of the transducer assembly with the acoustic waveguide to the predetermined torque.

Abstract: An instrument for treating a sinus cavity includes a cutter member, a rotatable member, and a fluid passage. The cutter member has a lumen extending therealong, and the rotatable member is received within the lumen. The rotatable member has a helical blade projecting from a distal end portion. The cutter member is configured to translate relative to the rotatable member. Thereby, the cutter member and the rotatable blade are configured to form an opening into the sinus cavity. The fluid passage extends through the cutter member from an inlet to an outlet. The outlet is positioned proximal to the helical blade such that the outlet is configured to fluidly communicate with the sinus cavity. The inlet is configured to receive at least one of a fluid and a vacuum in order to communicate the respective fluid or vacuum to the outlet for irrigating or suctioning the sinus cavity.

Abstract: The present disclosure relates to adapter assemblies for use with and to electrically and mechanically interconnect electromechanical surgical devices and surgical loading units, and to surgical systems including handheld electromechanical surgical devices and adapter assemblies for connecting surgical loading units to the handheld electromechanical surgical devices.

Abstract: Disclosed is an ultrasonic medical device that may include a surgical tool having a proximal end, an end effector, and a waveguide between them, a first transducer in mechanical communication with a first face of the surgical tool, and a second transducer in mechanical communication with an opposing face of the surgical tool, opposite the first transducer. The first transducer and the second transducer are configured to operate in a D31 mode with respect to the waveguide of the surgical tool. Another aspect comprises a method of fabricating the ultrasonic medical device, in which the surgical tool is machined from a portion of a flat metal stock so that the surgical tool has a longitudinal axis oriented at an angle with respect to a grain direction of the flat metal stock thereby optimizing an operational characteristic of the surgical tool.

Abstract: An intraocular lens injector (1) includes: a hollow body having an injector body (5) provided with a lens placement portion (11) on which an intraocular lens is placed, and a screw member (8) with a first threaded portion (8b) formed thereon and connected to a rear end portion of the injector body (5), and rotatable around an axis of the injector body (5) without moving in an axial direction of the injector body; and a moving member (9, 10) having a second threaded portion (9c) that engages with the first threaded portion (8b) from an initial state before use, and configured to release the intraocular lens from a tip of an injection tube 7 by moving in an axial direction of the injector body (5) independently from the screw member (8) due to an engagement of the first threaded portion (8b) and the second threaded portion (9c), during a rotating operation of the screw member (8).

Abstract: Systems, apparatuses, and methods include a surgical apparatus with a handle for grasping by a user and a multi-function surgical portion extending therefrom. The multi-function surgical portion may include an illuminator portion arranged to provide illumination to a surgical region of a patient during a surgical procedure, and tissue-treating portion coaxially aligned with the illuminator portion.

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 device is configured to provide multiple functions during a surgical procedure, in addition to resecting tissue, with a single insertion of the device into a patient.

Abstract: A surgical instrument includes a body, an elongate shaft extending distally from the body, an end effector disposed at a distal end of the elongate shaft, and a firing beam. The end effector has a first jaw and a second jaw. The first jaw is pivotable toward and away from the second jaw to capture tissue. The end effector further comprises at least one electrode. The at least one electrode is operable to apply RF energy to tissue captured between the first jaw and the second jaw.

Abstract: An electrosurgical system can include an electrosurgical generator, a feedback circuit or controller, and an electrosurgical tool. The feedback circuit can provide an electrosurgery endpoint by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio/visual performance indicators. The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances.

Abstract: An endoscopic bipolar forceps includes an elongated shaft having opposing jaw members at a distal end thereof. The jaw members are movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The jaws members are connected to a source of electrical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. At least one non-conductive and spaced-apart stop member is disposed on an inner-facing surface of the jaw members to regulate the gap distance between the jaw members when tissue is held therebetween. The forceps also includes a longitudinally reciprocating knife which severs the tissue after sealing at a location which is proximate the sealing site.

Abstract: An endoscopic bipolar forceps includes an elongated shaft having opposing jaw members at a distal end thereof. The jaw members are movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The jaws members are connected to a source of electrical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. At least one non-conductive and spaced-apart stop member is disposed on an inner-facing surface of the jaw members to regulate the gap distance between the jaw members when tissue is held therebetween. The forceps also includes a longitudinally reciprocating knife which severs the tissue after sealing at a location which is proximate the sealing site.

Abstract: A knife assembly of a surgical end effector assembly includes a knife body defining a longitudinal axis and having first and second arms. The first arm has a first head including a cutting edge at a distal end thereof and the second arm has a second head. The first head is pivotable relative to the second head to reduce a cutting height during translation of the knife assembly through a knife channel defined within the end effector assembly.

Abstract: A bipolar electrosurgical instrument includes a housing and an elongated shaft. An end effector is coupled to a distal end of the elongated shaft. A handle assembly includes a movable handle movable relative to a fixed handle for effecting movement of the jaw members from a first position to a second position. Each jaw member is configured to connect to a source of electrosurgical energy. A switch is disposed on the fixed handle and configured to be depressed between a first position and at least one subsequent position upon biasing engagement with a switch engaging surface disposed on the movable handle. The first position of the switch causes the relay of information to the user corresponding to a desired pressure on tissue grasped between the jaw members and the at least one subsequent position is configured to activate the source of electrosurgical energy.

Abstract: Systems and methods are provided for displaying an image of a tracked tool on a user interface, wherein at least a portion of the tool is hidden from view in any image on a user interface at any point during a procedure. The tool may include a cutting tool having jaws for clamping a material and a knife for cutting the clamped material, and superimposing an indicator of a knife position on the display during and/or after cutting. The knife position may include a location and/or orientation of the knife, including any or all of a pre-cut, cut-complete, cut-incomplete and an exposed position. The disclosed systems and methods allows a user to view the knife position in applications where the knife may not be visible to a user, which is particularly useful for clamping and cutting a body tissue with a robotic surgical system in minimally invasive procedures.

Abstract: The invention relates to a transmission device for engagement with a photosensitive drum having a drum axis, which includes a housing detachably attached to the photosensitive drum; a sleeve coupled with the housing and arranged coaxially to the drum axis; and a transmission unit having a shaft disposed to the sleeve and being rotatable about and movable along the drum axis relative to the sleeve. The shaft includes a first part, a second part and a bushing, each part has a body, the bodies of the first and second parts are detachably attached to each other, and the bushing is disposed outside the bodies of the first and second parts so that the first and second parts can be attached to each other firmly. Accordingly, the transmission device will not separate apart when it is driven to rotate.

Abstract: A surgical instrument includes a housing, a shaft extending therefrom and supporting an end effector, a knife, and a trigger assembly. The knife is configured to translate between retracted and extended positions. The trigger assembly includes a trigger movable relative to the housing between un-actuated and actuated positions, and a linkage including an apex and first and second bases. The apex is rotatably coupled to the housing about a pivot. The first base is disposed on a first side of the apex and coupled to the trigger. The second base is disposed on a second side of the apex and coupled to the knife. In response to movement of the trigger from the un-actuated to the actuated position, the first base is moved proximally, the apex is rotated about the pivot, and the second base is moved distally to move the knife from the retracted to the extended position.

Abstract: Provided is a steerable electrode catheter assembly capable of easily contacting an affected part of a patient when performing an operation on a human body while adjusting a direction of the electrode catheter assembly. In detail, provided is a steerable electrode catheter assembly whereby a length by which a catheter is inserted into an affect part of a patient during an operation on a human body may be easily adjusted and also an angle of a tip portion of the catheter may be easily adjusted by a user.

Abstract: A surgical tool arrangement for performing endoscopic surgical procedures which includes a powered handpiece and a cutting accessory which detachably connects to the handpiece and incorporates a cutting head configuration which provides both aggressive tissue resection and a smooth-cut finish on treated tissue.

Abstract: The present devices and methods relate generally to vacuum or suction powered medical devices and methods for cutting, resecting, excising, morcellating and/or evacuating tissue from various regions of a patient's body. In certain variations, the devices may produce a rotational motion by converting a linear reciprocating motion to a rotational motion, causing a cutting shaft or other tool to rotate to perform work on a tissue in various regions of the body.

Abstract: Electric vitrectomy handpieces are provided. The handpiece includes a motor, a clutch mechanism, an oscillating drive mechanism, a cutting tip and a handle. The motor is attached to the clutch, and the clutch is attached to the oscillating drive mechanism. When the motor is operational, the clutch expands to engage the oscillating drive mechanism and the oscillating drive mechanism converts the rotational motion of the clutch to the reciprocating motion of the cutting tip. When the motor is at rest, the clutch retracts to allow aspiration.