A method of manufacturing a catheter shaft includes extruding an inner polymeric layer having a main lumen and two or more side lumens spaced about the main lumen; forming an outer polymeric layer about the inner polymeric layer; and inserting at least one elongate member, such as a wire, through each side lumen of the inner polymeric layer. The side lumens are less than about ⅕ the size of the main lumen. The method may further include the step of forming a braided layer between the inner polymeric layer and the outer polymeric layer. In an alternate embodiment, the method includes co-extruding an inner polymeric layer and a multi-lumen layer, the multi-lumen layer having two or more side lumens; forming an outer polymeric layer about the multi-lumen layer; and inserting at least one elongate member through each side lumen. Catheter assemblies made according to the described methods are also disclosed.

Methods for additive manufacturing are provided. In embodiments, such a method comprises illuminating a photothermal base with light, the photothermal base comprising a photothermal material and mounted in an additive manufacturing system to form a first interface between a surface of the photothermal base and a curable composition comprising thermally curable components, wherein the light induces light-to-energy conversion in the photothermal base to generate heat at the first interface, thereby inducing curing of the thermally curable components to form a first cured region. Additive manufacturing systems and photothermal bases are also provided.

Provided is a porous polytetrafluoroethylene membrane in which an absolute value of a difference in lightness between one principal surface and the other principal surface is 1.0 or more, where the lightness is lightness L* of CIE 1976 (L*, a*, b*) color space specified in JIS Z8781-4: 2013. The porous polytetrafluoroethylene membrane may be colored black or gray. The porous polytetrafluoroethylene membrane provided can have properties with a reduced coloring-induced deterioration.

An embolic filter balloon is disclosed. The embolic filter balloon may comprise an inflatable balloon portion. Further, the inflatable balloon portion may be coupled to a filter member. The embolic filter balloon may be disposed in a body lumen. In some embodiments, the embolic filter balloon may be configured such that when the inflatable balloon portion is at least partially inflated the filter member extends at least partially across the body lumen. Such a configuration may allow the embolic filter balloon, when deployed, to filter particles greater than a predetermined size from a fluid in the body lumen.

A hot press cushioning material includes a cushioning material body in the form of a plate; and surface materials provided on the front and back sides of the cushioning material body. The surface material includes a core layer composed of a heat resistant fiber material for a nonwoven structure, and a front-side resin layer covering the entire front side of the core layer. The core layer has an air permeability of 5 cm.sup.3.Math.cm.sup.−2.Math.s.sup.−1 or less and a bulk density of 0.8 g/cm.sup.3 or more.

A double-layer longitudinal wrapping mold is disclosed, including a base, a first longitudinal wrapping structure, a first pressing structure, a second longitudinal wrapping structure, a second pressing structure and a first necking structure. The first longitudinal wrapping structure is disposed on the base and has a first guide hole, a first outer layer wrapping hole and an inner layer wrapping hole. The first pressing structure is disposed on the base and has a first pressing hole and a second outer layer wrapping tape hole. The second longitudinal wrapping structure is disposed on the base and has a second guide hole and a third outer layer wrapping tape hole. The second pressing structure is disposed on the base and has a second pressing hole and a fourth outer layer wrapping tape hole. The first necking structure is disposed on the base and has a necking hole.

Systems and methods for controlling a pump system for use in negative pressure wound therapy are described herein. In some embodiments, a method for controlling a pump system includes causing provision of negative pressure, via a flow path, to a wound dressing configured to be positioned over a wound, the flow path configured to fluidically connect the pump system to the wound dressing, measuring a first pressure value in the flow path at a first time, measuring a second pressure value in the flow path at a second time, calculating a first rate of pressure change using the first and second pressure values, and in response to determining that the calculated first rate of pressure change satisfies a threshold rate of change, providing an indication that the wound dressing is full, wherein the method is performed under control of a controller of the pump system.

Systems and methods for controlling a pump system for use in negative pressure wound therapy are described herein. In some embodiments, a method for controlling a pump system includes causing provision of negative pressure, via a flow path, to a wound dressing configured to be positioned over a wound, the flow path configured to fluidically connect the pump system to the wound dressing, measuring a first pressure value in the flow path at a first time, measuring a second pressure value in the flow path at a second time, calculating a first rate of pressure change using the first and second pressure values, and in response to determining that the calculated first rate of pressure change satisfies a threshold rate of change, providing an indication that the wound dressing is full, wherein the method is performed under control of a controller of the pump system.

In some examples, a catheter comprises an inner liner, an outer jacket, and a structural support member positioned between at least a portion of the inner liner and the outer jacket. The inner liner, the outer jacket, and the structural support member define a catheter body that comprises a proximal portion having a first outer diameter, a distal portion having a second outer diameter less than the first outer diameter, the distal portion including a distal end of the catheter body, and a medial portion positioned between the proximal portion and the distal portion, the medial portion tapering from the first outer diameter to the second outer diameter.

Provided is a melt processible fluororesin composition for injection molding of articles that has melt flow that facilitates injection molding, that can enhance strength of a fluororesin weld line area in an injection molded article, and that achieves excellent release from a mold. The fluororesin composition includes two or more types of melt processible fluororesins having different melt flow rates; one of the melt processible fluororesins being a high melt flow rate melt processible fluororesin having a melt flow rate of 35 g/10 min or greater, and another being a low melt flow rate melt processible fluororesin having a melt flow rate of 10 g/10 min or greater but less than 35 g/10 min; and wherein the ratio of the melt flow rate (MFRa) of the high MFR melt processible fluororesin to the melt flow rate (MFRb) of the low MFR melt processible fluororesin (MFRa/MFRb) is from 1 to 10.