22451results about How to "Prevent movement" patented technology

A surgical instrument for laparoscopic and endoscopic clinical procedures simultaneously severs and staples tissue clamped in an end effector comprising an elongate channel, which holds a staple cartridge, and a pivotally attached anvil. An E-beam firing bar engages the channel and selectively engages the anvil during distal firing movements, wherein the tissue is severed and stapled driven upward from the staple cartridge to form against the anvil. In particular, a wedge integral to the staple cartridge is driven distally by a middle pin of the firing bar to effect stapling. A lockout mechanism of the staple cartridge responds to the presence of the wedge sled in its unfired position to allow the firing bar to fire. Otherwise, the lockout mechanism prevents firing when the staple cartridge is spent.

A surgical instrument for laparoscopic and endoscopic clinical procedures simultaneously severs and staples tissue clamped in an end effector comprising an elongate channel, which holds a staple cartridge, and a pivotally attached anvil. An E-beam firing bar engages the channel and selectively engages the anvil during distal firing movements, wherein the tissue is severed and stapled driven upward from the staple cartridge to form against the anvil. In particular, a wedge integral to the staple cartridge is driven distally by a middle pin of the firing bar to effect stapling. A single lockout of the elongate channel responds to the presence of the wedge sled in its unfired position to allow the firing bar to fire. Otherwise, the single lockout prevent firing when the staple cartridge is missing or spent.

This application is directed to a surgical stapling device for performing circular anastomoses. The stapling device includes a retractable trocar which is slidably supported by an anvil retainer and movable from a retracted position located within the anvil retainer to an advanced position extending from the anvil retainer. The trocar defines a sensor and is operatively connected to an indicator assembly. The indicator assembly is operatively associated with an anvil assembly such that the indicator will not move from a fire-not ready position to a fire-ready position until an anvil assembly has been mounted to the anvil retainer.

A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one exemplary embodiment, a surgical clip applier is provided having a housing with a trigger movably coupled thereto and an elongate shaft extending therefrom with opposed jaws formed on a distal end thereof. The trigger is adapted to advance a clip to position the clip between the jaws, and to move the jaws from an open position to a closed position to crimp the clip positioned therebetween.

A surgical instrument including a handle assembly, a safety mechanism, an elongated body portion and a head portion is disclosed. The handle assembly includes a stationary handle, an approximation mechanism, and a firing trigger. A lever of the safety mechanism is movable between a first position where the firing trigger is prevented from being actuated, and a second position where the firing trigger is able to be actuated. A first jaw member of the head portion is movable in relation to a second jaw member of the head portion between spaced and approximated positions. Movement of the first jaw member in relation to the second jaw member from the approximated position towards the spaced position causes the lever of the safety mechanism to move from its second position to its first position.

A surgical instrument for performing surgery includes a housing defining an axial bore. A lock is slidably disposed in the transverse bore to engage and disengage a tube adaptor. A latch extends from the lock to move the latch into and out of the axial bore. The lock and latch allow for interchangeability of tip assemblies inserted into the surgical instrument. A first and second handle are pivotally attached to the housing. A first ratchet member is rotatably attached to the first handle and includes serrated teeth. A second ratchet member extends from the second handle. The second ratchet member including a finger for engagement with the serrated tooth to prevent movement of said first handle relative to the second handle. The first ratchet member is rotatable about the rotational axis to disengage from the second ratchet member and allow the first handle to move relative to the second handle.

The invention relates to a surgical stapler for applying at least two rows of staples, said surgical stapler comprising a cartridge housing said rows of staples and having a slot extending along the cartridge between two rows of staples, said surgical stapler further comprising a cutting means movable along said slot and a lockout mechanism for preventing movement of said cutting means, wherein said lockout mechanism comprises a blocking member movable between a first position, in which the blocking member blocks movement of said cutting means, and a second position, in which the blocking member permits movement of said cutting means, and a biasing member for biasing said blocking member towards said first position and wherein said cartridge comprises a release member for moving said blocking member towards said second position upon insertion of said cartridge into said surgical stapler.

Methods for treating tissue, and surgical assemblies and related methods are disclosed in which a single input is used to sequentially articulate two members. A surgical assembly includes an end effector, a base supporting the end effector, an input link movable relative to the base through a range of motion between a first configuration and a second configuration, and an actuation mechanism. The end effector includes a first articulated member and a second articulated member. The actuation mechanism drivingly couples the input link to the first articulated member within a first portion of the range of motion and drivingly coupling the input link with the second articulated member within a second portion of the range of motion so that a movement of the input link from the first configuration to the second configuration articulates the first articulated member and then articulates the second articulated member.

The present invention relates to apparatus for methods for endovascularly replacing a patient's heart valve. The apparatus includes an expandable anchor with leaflet engagement elements on the proximal end of the anchor and a replacement valve. The leaflet engagement elements can be used to prevent distal migration and insure proper positioning of the apparatus.

Several embodiments of the present invention are generally directed to medical visualization systems that comprise combinations of disposable and resuable components, such as catheters, functional handles, hubs, optical devices, etc. Other embodiments of the present invention are generally directed to features and aspects of an in-vivo visualization system that comprises an endoscope having a working channel through which a catheter having viewing capabilities is routed. the catheter may obtain viewing capabilities by being constructed as a vision catheter or by having a fiberscope or other viewing device selectively routed through one of its channels. The catheter is preferably of the steerable type so that the distal end of the catheter may be steered from its proximal end as it is advanced with the body. A suitable use for the in-vivo visualization system includes but is not limited to diagnosis and / or treatment of the duodenum, and particularly the biliary tree.

A cartridge of a surgical instrument includes a housing, a lead screw mounted for rotation in the housing, a drive member operatively coupled with the lead screw, and a knife member. The knife member is driven distally by the drive member and is configured to cut when moved distally. During an initial distal movement of the drive member, the knife member is coupled with the housing to restrain the knife member from moving distally. Subsequent to the initial distal movement of the drive member, the drive member drives the knife member toward the distal end.

A surgical instrument for laparoscopic and endoscopic clinical procedures simultaneously severs and staples tissue clamped in an end effector comprising an elongate channel, which holds a staple cartridge, and a pivotally attached anvil. An E-beam firing bar engages the channel and selectively engages the anvil during distal firing movements, wherein the tissue is severed and stapled driven upward from the staple cartridge to form against the anvil. In particular, a wedge integral to the staple cartridge is driven distally by a middle pin of the firing bar to effect stapling. A single lockout of the elongate channel responds to the presence of the wedge sled in its unfired position to allow the firing bar to fire. Otherwise, the single lockout prevents firing when the staple cartridge is missing or spent.

Apparatus and methods provide distal protection while accessing blood vessels within a patient's vasculature. A flexible sheath and distal protection element, e.g., a balloon or filter, are carried by a stiffening member. The sheath is lubricious and has a relatively thin wall, thereby providing a collapsible / expandable guide for delivering fluids and / or instruments. The sheath is advanced into a blood vessel in a contracted condition, expanded to an enlarged condition to define a lumen, and the distal protection element is deployed within the vessel beyond the sheath. Fluids and / or instruments are introduced into the vessel via the sheath lumen, the distal protection element retaining the fluids and / or capturing emboli released by the instruments. Upon completing the procedure, the sheath, distal protection element, and stiffening member are removed from the vessel.

A suture anchor (e.g. 100) for knotlessly securing nearby tissue to bone is formed from an anchor body (e.g. 101 / 102) that includes a mechanism for being securely anchored to the bone, an elongated suture puller (e.g. 122) extending through the anchor body with a proximal end for being pulled in a proximal direction by a surgeon and a distal end (e.g. 125) with a suitable mechanism for engaging suture (e.g. 127), suture (e.g. 132) carried by the engaging mechanism (e.g. 127) at the distal end (e.g. 125) of the elongated suture puller (e.g. 122), and a suture locking mechanism (e.g. 110) that substantially prevents the suture (e.g. 122) from moving in at least a first direction after being pulled into and through the anchor body (e.g. 101 / 102) by the elongated suture puller (e.g. 122).

Catheter based systems and methods for securing tissue including the annulus of a mitral valve. The systems and methods employ catheter based techniques and devices to plicate tissue and perform an annuloplasty.

An intervertebral implant comprising a spacer for engaging between two spinous processes of two vertebrae of the spine. The spacer has two elements each presenting a first part suitable for being connected to a spinous process and bearing second parts opposite from the first part, the bearing second parts being situated facing each other. An elastically-compressible member is disposed between the bearing second parts. Links are provided which are distinct from the elastically-compressible member for linking together the two elements, the link member being suitable for blocking translation movement of the two elements relative to each other when the two elements are driven apart from each other.

The present invention relates to apparatus for methods for endovascularly replacing a patient's heart valve. The apparatus includes an expandable anchor with leaflet engagement elements on the proximal end of the anchor and a replacement valve. The leaflet engagement elements can be used to prevent distal migration and insure proper positioning of the apparatus.

The present disclosure is directed to a surgical stapling device (10) for performing circular anastomoses. The surgical stapling device includes a handle portion (12), an elongated body portion (14) and a head portion (16) including an anvil assembly (30) and a shell assembly (31). The handle portion (12) includes a rotatable approximation knob (22) for approximating the anvil and shell assemblies (30,31) and a firing trigger (20) for actuating a firing mechanism for ejecting staples positioned within the shell assembly (31). The firing trigger (20) forms one link of a two bar linkage provided to actuate the firing mechanism. The anvil assembly (30) includes a tiltable anvil which will tilt automatically after firing of the device and unapproximating the anvil and shell assemblies (30,31). The head portion (16) also includes a retractable trocar assembly (240) which is slidably positioned within an anvil retainer (38) and is automatically advanced and retracted upon attachment and detachment of the anvil assembly (30) onto the anvil retainer (38). A lockout tube (270) is provided and is positioned about the anvil retainer (38) for releasably engaging an anvil assembly (30). The lockout tube (270) prevents inadvertent detachment of the anvil assembly (30) from the anvil retainer (38). The surgical stapling device (10) also includes a firing lockout assembly which prevents actuation of the firing trigger (20) until an anvil has been attached to the device and the anvil (129) has been approximated. A tactile indication mechanism is also provided for notifying a surgeon that the device has been fired and for notifying a surgeon that the anvil head has been unapproximated a distance sufficient to permit the anvil head to tilt.