摘要:
Methods and equipment are disclosed relating to three-dimensional printing that include positioning an array of nozzles within a bed of loose solid material, moving the array of nozzles through the bed of loose solid material while injecting a liquid from the array of nozzles in a controlled pattern causing the liquid to react with a portion of the bed of loose solid material forming a solid concrete three-dimensional object. An unreacted portion of the bed of loose solid material may then be separated from the solid three-dimensional object.
摘要:
Methods and equipment are disclosed relating to three-dimensional printing that include positioning an array of nozzles within a bed of loose solid material, moving the array of nozzles through the bed of loose solid material while injecting a liquid from the array of nozzles in a controlled pattern causing the liquid to react with a portion of the bed of loose solid material forming a solid concrete three-dimensional object. An unreacted portion of the bed of loose solid material may then be separated from the solid three-dimensional object.
摘要:
A retainer for assembling tissue thickness compensators to a surgical stapler can comprise a grip, a first surface for supporting a first tissue thickness compensator, a second surface for supporting a second tissue thickness compensator, and clips for aligning and attaching the retainer to the surgical stapler. The clips may align and attach the retainer to a staple cartridge of the surgical instrument. The clips may align the retainer with an anvil of the surgical instrument. An insertion tool may be used in combination with the retainer to insert the retainer into the surgical stapler and to push the tissue thickness compensators against the anvil and/or the staple cartridge of the surgical instrument.
摘要:
Bowel retractor devices. In various forms, the bowel retractor devices are configurable from a collapsed position wherein the retractor may be inserted through a trocar cannula or other opening in a patient's body to a second expanded position wherein at least a portion of the patient's bowel may be advantageously supported in a desired position.
摘要:
In various embodiments, a surgical stapling instrument can include a handle, a shaft extending from the handle, wherein the shaft defines an axis, and a disposable loading unit which is assembled to the shaft in a direction which is transverse to the shaft axis. Such a connection between the disposable loading unit and the shaft can prevent, or at least inhibit, the disposable loading unit from being unintentionally displaced proximally and/or distally relative to the shaft of the surgical instrument. The surgical stapling instrument and/or disposable loading unit can further include a threaded collar and/or detent assembly configured to hold the disposable loading unit in place. In various embodiments, a disposable loading unit can include a lockout feature which can prevent, or at least inhibit, an expended disposable loading unit from being reassembled to the elongated body of the surgical instrument.
摘要:
A tissue treatment device comprises a housing having a chamber that receives a treatment fluid mixture of tissue morsels and a scaffold material. A debriding shaft including a plurality of cutters is coupled with the housing. The debriding shaft extends proximally within the chamber and extends distally from the end of the housing. The debriding shaft is inserted within a treatment site such as a fistula tract and is rotated and reciprocated such that the debriding shaft removes tissue cells along the site. The site is flushed with saline or other irrigating fluid followed by application of the treatment fluid mixture. The chamber of the housing comprises agitators positioned adjacent the debriding shaft. The treatment fluid mixture passes through the chamber of the housing along and between the outer surface of the debriding shaft and the agitators for thorough mixing before exiting the device at the treatment site.
摘要:
An apparatus and method of reducing the effects of hydrodynamic forces of waves and water currents in coastal environments (e.g., oceans, and coastal, river, lake, and reservoir banks). The apparatus is an oysterbreak having two basic designs adapted to allow for the attachment of oysters and other bio-fouling marine organisms, using the least amount of material. In one embodiment, the oysterbreak comprises a support structure and plurality of slats (i.e., relatively planar sections or surfaces) having growth layers made from tubing coated with a material capable of inducing aquatic sessile organism attachment and growth. In another embodiment, the oysterbreak comprises a plurality (e.g., two, three, four, five, six, etc.) of growth layers of regular polygonal-shaped members made from a material capable of inducing aquatic sessile organism attachment and growth that when stacked, form a relatively portable, breakwater module.
摘要:
A surgical stapling apparatus. Various embodiments include a rotatable elongated body that extends from a rotatable shroud on handle assembly and has a distal end configured for attachment to a disposable loading unit. The apparatus further includes a lockable rotation system for selectively locking the rotatable shroud to prevent rotation thereof about a longitudinal axis.
摘要:
In various embodiments, a surgical stapling instrument can comprise a plurality of magnetic elements configured to articulate an end effector of the surgical instrument. The surgical instrument can comprise at least one electromagnet which can be selectively activated, or polarized, to generate a magnetic field sufficient to motivate a second magnetic element, such as a permanent magnet and/or an iron core, for example, mounted to the end effector. In certain embodiments, a surgical stapling instrument can comprise a plurality of magnetic elements configured to open and/or close an end effector of the surgical instrument. In at least one embodiment, a surgical stapling instrument can comprise a plurality of magnetic elements configured to advance and/or retract a firing bar, cutting member, and/or staple sled within the surgical instrument in order to incise and/or staple tissue positioned within an end effector of the surgical instrument.
摘要:
In various embodiments, a surgical stapling instrument can comprise a plurality of magnetic elements configured to articulate an end effector of the surgical instrument. The surgical instrument can comprise at least one electromagnet which can be selectively activated, or polarized, to generate a magnetic field sufficient to motivate a second magnetic element, such as a permanent magnet and/or an iron core, for example, mounted to the end effector. In certain embodiments, a surgical stapling instrument can comprise a plurality of magnetic elements configured to open and/or close an end effector of the surgical instrument. In at least one embodiment, a surgical stapling instrument can comprise a plurality of magnetic elements configured to advance and/or retract a firing bar, cutting member, and/or staple sled within the surgical instrument in order to incise and/or staple tissue positioned within an end effector of the surgical instrument.