A sleeve insertion assembly includes a sleeve inserter defining an inner chamber and having a distal end and a proximal end opposite the distal end, a sleeve receivable within the inner chamber, and a blade guard receivable within the sleeve and having a cylindrical body that defines an interior and an open end. The open end is sized to receive jaw members of an end effector into the interior but prevent the end effector from entering the interior, and the blade guard is forced out of the sleeve when the sleeve is installed on the end effector.

A portable and passive safety intraosseous device to allow for direct introduction of medications, etc., within the intermedullary space of a subject patient's bone or, if needed, the removal of certain substances from such a subject patient's bone. Such a device permits direct drilling and placement of a cannula within the subject bone with access external to the subject patient's skin, permitting, as well, connection of a tube for such introduction/removal purposes. The ability to provide a passive safety unit allows for facilitated utilization in, for instance, emergency situations with the entire device provided for utilization thereof. The device includes a drilling component with a permanently attached stylet and a removable cannula, a power supply for a single drilling operation, a mechanism to draw the stylet back into the drill component after use and disengagement from the cannula, and an automatic closure that activates with the separation of the cannula.

A puncture needle can comprise an elongate portion, a puncture component associated with a distal end of the elongate portion, and a spacer associated with a distal portion of the elongate portion, where the spacer can be configured to contact a wall of the delivery catheter lumen to prevent contact between the puncture component and the wall. A puncture needle can comprise an elongate portion and a puncture component associated with a distal end of the elongate portion, where the puncture component comprises a blade edge on a distal edge, and where the puncture component is configured to be advanceable through a lumen of a delivery catheter without the blade edge sticking to a wall of the lumen.

A catheter system having one or more needle position indicators to assist an operator in withdrawing the introducer needle to a “parked” position, as part of a catheterization procedure, wherein the needle position indicator provides a visual indication to the operator.

A device for loading a trocar assembly with an adapter assembly of a surgical stapling instrument is provided. The trocar loading device includes a base member and an engagement member operatively secured to the base member. The base member defines a longitudinal passage for receipt of a trocar assembly and the engagement member releasably secures the trocar member within the base member. The base member includes an alignment feature for aligning the trocar assembly with an adapter assembly.

An actuator for a marking device includes a cannula mount, a stylet mount, and a trigger. The cannula mount is configured to slidably support a cannula. The cannula mount includes an elongated cannula support shaft. The stylet mount is configured to slidably support a stylet. The stylet mount includes an elongated stylet support shaft. The trigger is rotatably mounted to a trigger mount of a handle. The actuator is mounted to the handle to effect movement of a stylet and a cannula to eject an imaging marker from the marking device and to retract the cannula into the handle following the ejection of the imaging marker from the marking device

A surgical stapling device includes an adaptor assembly and a reload assembly supported on a distal end portion of the adaptor assembly. The reload assembly includes a shell housing, a staple cartridge supporting staples, a staple pusher, a staple actuator, a knife carrier, and a locking member. The staple pusher is movable from a retracted position to an advanced position to eject the staples from the staple cartridge. The staple actuator is movable from a retracted position to an advanced position to move the staple pusher from its retracted position to its advanced position. The knife carrier is movable between a retracted position and an advanced position. The locking member is supported on the knife carrier. The locking member is configured to engage the staple actuator in its advanced position while engaging the knife carrier in its retracted position such that the locking member inhibits re-advancement of the knife carrier.

A needle guide apparatus for endocavity ultrasound intervention is provided, comprising a plastic bracket and a needle guiding passage made of metal that is provided in the plastic bracket, wherein the plastic bracket has a mounting structure that is detachably mounted to an endocavity ultrasound probe, and the needle guiding passage comprises a needle insertion groove provided by a metal head and a guiding groove provided by a metal guiding tube, the metal guiding tube is at least partially housed in the plastic bracket, and at least an inlet end of the metal head is exposed outside the plastic bracket. The needle guide apparatus for endocavity ultrasound intervention forms an all-metal needle guiding passage in the plastic bracket, so that the needle can smoothly and cleanly enter the human body during the ultrasonic interventional operation, and the interventional operation is safe, reliable and easy to operate.

A reload assembly includes a shell housing, a knife carrier, and a one-way collar. The knife carrier is movably positioned about an inner housing portion of the shell housing between retracted and advanced positions and supports a snap-ring. The one-way collar is movably supported about the inner housing portion of the shell housing from a retracted position to an advanced position in response to movement of the knife carrier from its retracted position to its advanced position. The snap-ring is movable with the knife carrier to a position proximally of the one-way collar when the one-way collar is in its advanced position to obstruct movement of the knife carrier back towards its advanced position.

A surgical loading unit includes an anvil assembly, a staple cartridge assembly pivotably coupled to the anvil assembly, and a knife configured to approximate the staple cartridge assembly and the anvil assembly. The staple cartridge assembly has a staple cartridge chassis having a support protruding outwardly from a proximal end thereof. The knife includes an upper plate coupled to the staple cartridge chassis and a lower plate coupled to the anvil assembly. The support of the staple cartridge chassis has an upper surface that is coplanar with or above an upper surface of the upper plate when the knife is in a proximal position for preventing the knife from catching on a surgical port during use.