The invention relates to a valvulotome comprising a catheter tube (4) and an expandable basket (5) with cutting elements (7), wherein the catheter tube (4) being designed to accommodate within itself the expandable basket (5) in a non-expanded state, wherein the basket (5) is fixed to the distal end of a wire element (3) extending in the catheter tube (4) and the basket (5) distally comprises an atraumatically configured resilient tip (8).

Hollow vector support multifunctional protection devices and systems for minimally invasive surgery are disclosed. In an embodiment, a hollow vector support multifunctional protection device includes a protective head, a pitching mechanism for the protective head, an inner cylinder, an axial movement mechanism for the inner cylinder, and a shell. The protective head includes a flap ring, a plurality of first rotating shafts, a plurality of flaps uniformly arranged on the flap ring through the first rotating shafts, and a torsion spring arranged on the first rotating shafts. The torsion spring is configured to provide a force for opening the plurality of flaps along the first rotating shafts, and the first rotating shafts are provided with limiting structures configured to limit a maximum opening degree of the flaps.

Provided herein are methods for treating nephrolithiasis and protecting the urothelium and inner lining of the kidney from thermal damage during lithotripsy by use of a thermosensitive bio-adhesive hydrogel. The described method dramatically improved the efficiency and effectiveness of stone clearance compared to conventional techniques while providing protection to the urothelium from potentially damaging temperature spikes.

A guide device for cannulas for the collection of micro-fragmented subcutaneous adipose tissue includes a handle which has an axial cavity intended to house a syringe equipped with a collection cannula. The axial cavity has an open proximal end, an open distal end and a central axis. A lip protrudes cantilevered from the distal end at a distance from the central axis and from said cannula. An intermediate anti-flexion element of the cannula is arranged between the handle and the lip.

Medical guidewire assembly is movable through guidewire introducer positionable proximate to a biological wall located within the body of a patient. Medical guidewire assembly has flexible distal shaft section configured to extend along the guidewire introducer. Medical guidewire assembly has a predetermined spatial geometry once the flexible distal shaft section is removed from guidewire introducer. Medical guidewire assembly also has a piercing stylet device configured to puncture the biological wall in response to placement of guidewire introducer (in use) proximate to the biological wall, and movement of the flexible distal shaft section through the guidewire introducer. The predetermined spatial geometry is configured to prevent physical contact between the piercing stylet device and adjacently positioned tissue of the patient in response to formation of the predetermined spatial geometry.

A medical guidewire assembly is movable through an exit portal of a guidewire introducer. The guidewire introducer and the medical guidewire assembly are each insertable, at least in part, into a patient. The medical guidewire assembly is configured to reduce, at least in part, the hoop stress surrounding a puncture hole extending through the tissue of the patient. This is done in response to movement, at least in part, of the medical guidewire assembly relative to the puncture hole (after the puncture hole has been initially formed).

A surgical stapling device includes an end effector configured to accommodate prolapsed tissue to perform an anastomosis externally of a body cavity. The surgical stapling device has an anvil assembly and a shell assembly. The anvil assembly includes an anvil plate and anvil rods that extend proximally from the anvil shaft and are positioned about the shell assembly. The anvil plate has a proximally facing surface that defines staple forming pockets. The shell assembly includes a shell housing that defines a cavity, an annular pusher that is movable within the cavity from a retracted position to an advanced position, an annular staple cartridge, and an annular knife blade. The staple cartridge includes staple receiving pockets that receive staples, and the knife blade is secured to the pusher radially outwardly of the staple receiving pockets.

A wedge osteotomy device including a cutting guide coupled to a base plate via a joint. The cutting guide configured to pivot relative to the base plate about a pivot axis extending through the joint. The cutting guide including a guide body including a cutting slot extending through the guide body, an arcuate slot extending through the guide body and defining a radius to the joint, and a plurality of markers on the guide body identifying a position of the cutting guide relative to the base plate. The base plate including planar top and bottom surfaces.

Systems and methods are described for correcting sagittal imbalance in a spine including instruments for performing the controlled release of the anterior longitudinal ligament through a lateral access corridor and hyper-lordotic lateral implants.

A surgical stapler can comprise an anvil comprising a staple pocket formed in a tissue contacting surface. The staple pocket can comprise a midline or centerline, a first forming cup, and a second forming cup. The first forming cup can comprise a first interior sidewall comprising a first vertical portion which is substantially perpendicular to the tissue contacting surface. The second forming cup can comprise a second interior sidewall comprising a second vertical portion which is substantially perpendicular to the tissue contacting surface. The first vertical portion and the second vertical portion can extend through the centerline, wherein the first interior sidewall and the second interior sidewall can comprise a trap for deforming a first staple leg of a staple to a first side of the centerline and for deforming a second staple leg of the staple to a second side of the centerline.