A vascular clamp and forceps systems. The clamp has a pair of clamping blades which are spring-loaded closed, and the forceps has a pair of jaws which are also spring-loaded closed. Forceps-engaging means is connected to the blades, and clamp-engaging means is carried by the jaws. When the jaws are forced apart and then relaxed onto the clamp, the clamping blades are spread apart to receive the tissue to be clamped upon, and when the handles of the forceps are pressed together against their spri...

A method for vascular reconstruction comprises the steps of advancing a catheter having a position sensor into the vessel, acquiring position information from the sensor at a plurality of points in the vessel, calculating a center-line of the vessel based on said position information, and calculating the inner surface of the vessel. The method of the invention preferably further comprises displaying the vessel reconstruction. The invention is also directed to apparatus for reconstructing vessels...

A vascular prosthesis (50) comprises a tube (52) of material other than autologous vascular tissue, the tube having an end formation for surgical connection direct to an opening formed in an artery, the formation comprising an enlarged chamber (54) having a heel (56) and a toe (58) at opposite ends of a first longer diameter parallel to the axis of the tube and a second shorter transverse diameter the enlarged chamber serving to promote localised movement of blood having a non-laminar nature wit...

A bifurcated vascular graft having a tubular trunk with an inner diameter. Tubular limbs having respective inner diameters extend longitudinally from the trunk, and the diameter of at least one of the limbs is unequal to half the trunk diameter. In one embodiment, the graft is flared such that the combined diameters of the limbs exceed the diameter of the trunk. In another embodiment, the graft is tapered such that the diameter of the trunk exceeds the combined diameters of the limbs. In a third...

Described herein are an apparatus and range of techniques used to study the retinal vasculature near the fovea, a description of the need and rationale for noninvasive in vivo monitoring of the retinal vasculature, a presentation of theoretical and practical considerations which demonstrate that entoptic visualization of the smallest capillaries near the fovea is optimized by a small short wavelength source (1 mm or less) rotating at 3.5 Hz in a circular path (radius 2 mm) imaged in the plane of...

The present invention relates to a vascular filter (1) which can beplaced in a blood vessel, and which comprises at least one passage with a circumference suitable for the purpose of intercepting thrombus, wherein the filter (1) comprises a longitudinal body member (6) with, in a position of use, a circumference corresponding to the internal diameter of the blood vessel transverse to the longitudinal direction thereof. The invention also relates to a method for manufacturing vascular filter (1).

In order to provide better guidance for the two branches in the region of a cross-over point of a vascular clip having a first and a second branch which are pivotal resiliently into a closed position whereby, in the region of the cross-over point, the first branch passes through a longitudinal slot in the second branch formed between two parallel webs, it is proposed that a bridge piece be arranged laterally of the first branch which passes through the second branch, and that the bridge piece ex...

A self-supporting retractor for holding open an anatomic space for performing endoscopic surgical procedures. The retractor includes a substantially rigid elongate member, having proximal and distal ends, and having an arch shape or "C" cross-section, defining a passage and longitudinal working window along the retractor. The distal end is preferably rounded or streamlined to facilitate insertion along a dissected space with minimized tissue trauma, and may include a hooded portion enclosing the...

The present invention relates to a vascular stent comprising wide vertical branches and narrow horizontal branches having wave-form projections, which has a vertically denser distribution. The vascular stent of the present invention comprises stainless steel-based vertical branches and horizontal branches having wave-form projections. The widths of the vertical branch and horizontal branch range 0.09 to 0.12 mm and 0.05 to 0.09 mm, respectively, while each thickness of those are identical to eac...

The invention provides materials and methods for modeling human blood vessels. Including panels of anatomically accurate vascular phantoms, such as carotid artery phantoms, comprising a range of stenotic conditions and other geometric variations; methods of making anatomically accurate vascular phantoms using stereolithography with an input data set representation of a natural vascular lumenal surface to construct an anatomically accurate vascular phantom comprising a physical representation of ...