70 results about "STAPLE DRIVER" patented technology

An instrument including a clamping jaw with an anvil defining an elongated slot and staple forming cups on opposing sides of the elongated slot. A housing rotatably mounts on the anvil and a pusher rotatably mounts within the housing. A handle actuates the clamping jaw from the open to the intermediate position by rotating the housing towards the clamping jaw. To move from the intermediate position to the closed position, the pusher rotates towards the anvil. A staple cartridge, disposed in the housing, includes a staple track for retaining two rows of staples on opposing sides of the elongated slot. Two staple drivers align with the distal most staples. The drivers slidably mount in the staple cartridge and couple to the pusher such that each staple driver forces a staple into the forming cups and, in turn, staples the body tissue as the pusher rotates from the intermediate to closed position. A knife rotatably mounts on the staple cartridge and couples to the pusher such that the knife passes into the elongated slot and, in turn, cuts the body tissue as the pusher rotates from the intermediate to closed position.

A linear stapler comprises a support base having a proximal end and a distal end; a trigger located at the proximal end of the support base; an end effector located at the distal end of the support base, fired by the trigger and including a cartridge. The cartridge comprises a cartridge body. The cartridge body includes staple slots for accommodating staples; and a cartridge lockout which is forced into an open position to abut against an outer side of a staple driver when the cartridge is not fired and which springs back toward the inside direction of the cartridge body after the staples in the cartridge are fired by the staple driver. Another linear stapler comprises a support base having a proximal end and a distal end; a trigger located at the proximal end of the support base; an end effector located at the distal end of the support base, fired by the trigger and including a cartridge, the cartridge comprising a cartridge body including a spent cartridge indicator.

A surgical instrument for being endoscopically or laparoscopically inserted into a surgical site for simultaneous stapling and severing of tissue includes force adjusted spacing between an upper jaw (anvil) and a lower jaw (staple cartridge engaged to an elongate staple channel) so that the height of staple formation corresponds to the thickness of the tissue, yet does not exceed the height range that may be accommodated by the length of the staples. In particular, collapsible staple drivers may be supported within the cartridge for driving a staple or staples supported thereon into forming contact with an underside of an anvil attached to the instrument. As the staples contact the anvil, the drivers can compress or collapse to control the overall formed height of the staple or staples based upon the amount of compression forces experienced by the drivers during the stapling process.

A surgical instrument is disclosed. The surgical instrument includes a handle portion, a channel, an anvil, and staple cartridge, a wedge member, a reciprocating firing device, and a lockout arm. The handle portion is operably configured to produce a firing motion and is coupled to the channel portion. The staple cartridge is engaged by the channel and includes a plurality of staple drivers to cam the staples toward the anvil, which is pivotally attached to the channel. The wedge member is proximal to and longitudinally aligned with the staple drivers, and the reciprocating firing device is responsive to the firing motion to progressively drive the wedge member from an unfired to a fired position. The lockout arm is pivotally attached to the channel and operably configured to pivot between a locked position and an unlocked position with respect to the firing device based upon a position of the wedge member.

A surgical instrument including a switching mechanism which allows a surgeon to selectively advance or retract a staple driver and/or cutting member within a staple cartridge. In various embodiments, the surgical instrument can include a handle, a trigger operatively coupled to the handle, a firing drive, and an end effector. The firing drive can include a first ratchet assembly configured to advance a cutting member in the end effector and a second ratchet assembly configured to retract the cutting member. The trigger can include first and second pawls pivotably mounted thereon which are configured to be selectively engaged with the first and second ratchet assemblies, respectively. In at least one embodiment, the trigger can be configured to slide between a first position in which the first pawl is engaged with the first ratchet assembly and a second position in which the second pawl is engaged with the second ratchet assembly.

A surgical instrument including a drive mechanism configured to advance a staple driver and/or cutting member at a first rate and retract the staple driver and/or cutting member at a different rate. In at least one embodiment, the rate at which the driver and cutting member is advanced and/or retracted is the distance that the driver and/or cutting member is translated per actuation of a trigger, for example. In various embodiments, the cutting member can be retracted at a faster rate as compared to the rate in which it is advanced. In such embodiments, the surgical instrument can, owing to the slower advancing rate, provide a greater torque or advancing force to the cutting member while, owing to the faster retracting rate, reduce the time required for the surgeon to retract the cutting member.

A surgical instrument including a trigger which can be configured to close a jaw member upon a first actuation of the trigger and advance a staple driver and/or cutting member upon a subsequent, or second, actuation of the trigger. Such a surgical instrument can allow a surgeon to position the surgical instrument in a surgical site and close the jaw member with an initial actuation of the trigger without deploying any staples into, or incising, the tissue. As a result, the surgeon can manipulate the position of the surgical instrument and then actuate the trigger a second time to deploy staples into, and/or incise, the tissue. In at least one such embodiment, the first actuation of the trigger which closes the jaw member can also unlock a firing drive configured to advance the staple driver and cutting member during the second actuation of the trigger.

A surgical instrument including a firing drive configured to advance a cutting member and/or staple driver within an end effector, and a brake configured to prevent, or at least partially inhibit, the relative movement of the cutting member and/or staple driver. The surgical instrument can further include a firing member operably engaged with the cutting member, for example, a band connected to the firing member, and a reel, where the band can be configured to be wound around the reel. In various embodiments, the brake can be selectively engageable with the reel and/or band to prevent, or limit, the movement of the band. The brake can include a brake surface where relative movement between the band and the brake surface can generate a friction force therebetween which can hold the firing member in position until a sufficient force is applied to the firing member to overcome the friction force.

Stapler, in particular for hemorrhoidal use, includes a body, an elongate, fixed jaw part connected to the body and including a curved anvil defining staple-forming pockets and a curved portion defining an opening bound on lateral and longitudinal sides, an actuating jaw part including a curved staple driver and optionally a cutting knife, a trigger coupled to the body for actuating the actuating jaw part and an adjustment mechanism for moving the actuating jaw part to vary a longitudinal dimension of the opening defined between a staple cartridge and the anvil. When the actuating jaw part is actuated by the trigger, the staple driver forces staple blanks in the staple cartridge into staple-forming pockets of the anvil to form staples in tissue retained in the opening, while the cutting knife, when present, amputates the tissue.

The present invention disclosed a surgical staple (50) and staple pocket (57) for forming kidney-shaped staple therefor, with the staple pocket (57) being recessed inward on the tissue contacting surface of the staple anvil (58), and with M-shaped staple (50) being used, wherein the degree of projection of the middle portion of the back span (51) of the M-shaped staple (50) arranged at the inner circle or arrangd at a proximal side of a cutter slot (121) is larger than that of the back span (51) of the M-shaped staple (50) arranged at the outer circle or arranged at a distal side of the cutter slot (121), so that when the staple (50) of the same height are adapted to staple tissues to be stapled of different thickness, staple driver (68) bends the M-shaped staple (50) on the staple pocket (57) to form kidney-shaped staple (50) so as to achieve the operational effect of being able to seal the stapled tissue, to stop bleeding and to heal the tissue therearound.

A stapler includes a housing having a hand grip portion constructed and arranged to be manually grasped by an operator, a staple drive track disposed in the housing, a staple feed track leading to the staple drive track configured to guide staples toward the drive track, and a staple driver mounted within the staple drive track, the staple driver configured to drive staples into a workpiece. The stapler further includes a guide pivotally mounted in a body portion of the housing. The guide has an elongated member receiving region. The guide is configured to pivot between a stored position in which the guide is disposed within the housing and a deployed position in which the guide extends out of the housing.

An articulating surgical instrument is provided including a handle, an articulating portion extending distally of the handle and an end effector positioned on a distal end of the articulating portion. A flexible drive band is provided for movement through the articulating portion and end effector. The flexible drive band includes a first portion having a first height and the second portion having a second height greater than the first height. The difference in heights being sufficient to eject staples from a body portion of the end effector into an anvil member of the end effector. An actuation mechanism is provided for drawing the flexible drive band through the articulating surgical instrument.