摘要:
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, resilient structures may be formed into one or more of the elongate channel that supports the staple cartridge, the anvil that is pivotally attached to the elongate channel, and/or a firing member that includes a cutting surface (knife) that severs tissue between a top pin that engages the anvil and a lower foot that engage the elongate channel. The resilience responds to the force exerted by clamped tissue to vary the spacing between the anvil and the staple cartridge supported within the elongate channel.
摘要:
A surgical stapling and severing instrument enables minimally invasive surgical procedures by having upper and lower jaws (i.e., anvil and staple channel) that are positioned with an elongate shaft and handle through a surgical opening, and in particular through a cannula of a trocar. A pair of fluid bladders (lift bags) are positioned in the staple channel beneath a proximally projecting lever tray so that transfer of fluid from the handle causes closing and clamping of the anvil. The bi-directional fluid control may be mechanically produced at the handle or by activating an electroactive polymer actuator. Once firing is sensed, an EAP plunger in a medical substance syringe inserted into the elongate shaft is activated to dispense a medical substance (e.g., anesthetics, adhesives, cauterizing substances, antibiotics, etc.) and is guided along a firing bar to a cutting surface of an E-beam placing the substance on tissue as severed.
摘要:
A surgical cutting and fastening instrument is disclosed. According to various embodiments, the instrument includes an end effector, a main drive shaft assembly connected to the end effector, and a gear drive train connected to the main drive shaft assembly. The end effector comprises a movable cutting instrument for cutting an object positioned in the end effector. The instrument also includes a main motor for actuating the gear drive train and a firing trigger for actuating the main motor. The instrument also includes a tactile position feedback system for applying force to the firing trigger such that the position of the firing trigger is related to the position of the cutting instrument in the end effector.
摘要:
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, resilient structures are formed into an E-beam firing bar that includes a cutting surface (knife) that severs tissue between a top pin that engages the anvil and a middle pin and lower foot that engage the lower jaw. The resilience responds to the force exerted by clamped tissue to vary the spacing.
摘要:
A surgical stapling device. The device comprises an end effector that comprises an anvil having a staple forming surface defining a plurality of staple forming pockets. A first quantity of the plurality of staple forming pockets has a first depth and a second quantity of the plurality of staple forming pockets has a second depth. The first depth is greater than the second depth.
摘要:
A staple cartridge for use with a surgical stapling device. The stapling device has an actuator that is selectively actuatable in an axial direction and an anvil that is moveable between open and closed positions. The staple cartridge comprises a plurality of staples and a first plurality of staple drivers. Each staple driver has an upper staple supporting surface for supporting one of the staples such that, when actuated, each staple driver drives the staple into the anvil. The upper staple supporting surface supports staples of different wire diameters in an upright position.
摘要:
A surgical stapling device comprising an end effector. According to various embodiments, the end effector comprises an anvil having a staple forming surface and a plurality of staples facing the staple forming surface of the anvil. The end effector also comprises a plurality of staple drivers moveable supported within the staple cartridge. Each staple driver is in contact with one of the plurality of staples such that when the staple drivers are actuated, the plurality of staples are formed against the staple forming surface of the anvil. A first quantity of the staple drivers have a first height and a second quantity of the staple drivers have a second height, wherein the first height is less than the second height such that the staples driven by the first quantity of staple drivers have a longer formed length than the staples driven by the second quantity of staple drivers.
摘要:
A hydraulically actuated surgical instrument. The instrument may comprise a handle portion and a shaft. The shaft is mechanically coupled to the handle. The instrument may also include an end effector mechanically coupled to the shaft along its longitudinal axis. The end effector may comprise a surgical implement and a hydraulic device. At least a portion of the surgical implement may be translatable along a transverse axis, wherein the transverse axis is substantially perpendicular to the longitudinal axis of the shaft. Also, the hydraulic device may be positioned to be expandable toward the surgical instrument in a direction substantially parallel to the transverse axis of the shaft.
摘要:
A medical agent dispensing system can be provided that may be structured for use with a surgical severing/stapling instrument that is designed for severing and stapling tissue. The dispensing system may include at least one storage reservoir structured for storing at least a component of a medical agent; a gear pump casing in communication with the storage reservoir; a screw pump auger positioned within the gear pump casing capable of rotational manipulation to move the medical agent through the gear pump casing; and, at least one agent tube in communication with the gear pump casing. The agent tube may be structured for communication with a least one agent port formed in a staple cartridge of the surgical instrument for dispensing the medical agent therethrough.
摘要:
A surgical stapling device. According to various embodiments, the stapling device comprises an end effector and a plurality of stacked actuatable wedge band sets. The end effector comprises an anvil having a staple forming surface and a staple cartridge facing the staple forming surface of the anvil. The staple cartridge comprises a plurality of staples and a plurality of staple drivers moveable supportable within the staple cartridge. Each staple driver is in contact with one of the staples and configured such that when the staple drivers are actuated, the staple drivers drive the staples through the staple cartridge so that the staples are formed against the staple forming surface of the anvil. Each stacked wedge band set comprises at least two different-level wedge bands for axially traversing the end effector. Each wedge band comprises a wedge cam at its distal end for driving certain ones of the staple drivers when the wedge band is actuated. A first of the two wedge bands in the stacks rides on a second of the two wedge bands in the stacks such that the staple drivers are driven in successive stages by the at least two wedge bands when the wedge bands are driven in succession. The cumulative height of a first of the plurality of stacked wedge band sets is less than a cumulative height of a second of the plurality of stacked wedge band sets.