Patent classifications
A61L15/50
Dynamic and switchable slippery surfaces
The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS) that can be modified as desired. Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of objects, referred to herein as Object A (Solid A or Liquid A). Use of an external stimuli or degradation of the Liquid B can be utilized to change the characteristics of SLIPS structures reversibly or irreversibly that may be desired in a number of different applications. Numerous characteristics, such as adhesion, optical, mechanical, and the like, can be dynamically changed.
Dynamic and switchable slippery surfaces
The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS) that can be modified as desired. Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of objects, referred to herein as Object A (Solid A or Liquid A). Use of an external stimuli or degradation of the Liquid B can be utilized to change the characteristics of SLIPS structures reversibly or irreversibly that may be desired in a number of different applications. Numerous characteristics, such as adhesion, optical, mechanical, and the like, can be dynamically changed.
Hydrogel Wound Dressings Exhibiting Reduced Fiber Losses In Use
A wound dressing comprising: a water-absorbent fabric comprising at least about 10 wt. % of hydrogel-forming absorbent fibers based on the dry weight of the fabric; and an adhesion-resistant, water-permeable wound contacting surface textile layer that is substantially continuously bonded to at least one surface of said fabric. The surface textile layer may be formed by surface treatment of the fabric, or by bonding a suitable textile web to the surface of the fabric.
Hydrogel Wound Dressings Exhibiting Reduced Fiber Losses In Use
A wound dressing comprising: a water-absorbent fabric comprising at least about 10 wt. % of hydrogel-forming absorbent fibers based on the dry weight of the fabric; and an adhesion-resistant, water-permeable wound contacting surface textile layer that is substantially continuously bonded to at least one surface of said fabric. The surface textile layer may be formed by surface treatment of the fabric, or by bonding a suitable textile web to the surface of the fabric.
Absorbent article
An absorbent article is provided with a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorbent body between the top sheet and the back sheet. The top sheet has a non-woven fabric having multiple convex portions and multiple concave portions. The individual convex portions and concave portions contain a blood lubricity-imparting agent that has a kinetic viscosity of 0.01-80 mm.sup.2/s at 40 C., a water retention rate of 0.01-4.0 mass % and a weight-average molecular weight of less than 1,000. The amount of the blood lubricity-imparting agent at the top of the convex portions is larger than in the parts other than the top of the convex portions. The amount of the blood lubricity-imparting agent at the bottom of the concave portions is larger than in the parts other than the bottom of the concave portions.
Absorbent article
An absorbent article is provided with a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorbent body between the top sheet and the back sheet. The top sheet has a non-woven fabric having multiple convex portions and multiple concave portions. The individual convex portions and concave portions contain a blood lubricity-imparting agent that has a kinetic viscosity of 0.01-80 mm.sup.2/s at 40 C., a water retention rate of 0.01-4.0 mass % and a weight-average molecular weight of less than 1,000. The amount of the blood lubricity-imparting agent at the top of the convex portions is larger than in the parts other than the top of the convex portions. The amount of the blood lubricity-imparting agent at the bottom of the concave portions is larger than in the parts other than the bottom of the concave portions.
Sanitary device
A sanitary device for insertion into a body cavity having a perforated casing in which a medicant is located within a distal portion of the casing and a semi-rigid absorbent material is located within a proximal portion of the casing. A plunger extends into the casing from the proximal portion and is movable to force the semi-rigid absorbent material into contact with the medicant which forces the medicant out of the distal portion of the casing. Unwanted body fluids can drain into the proximal portion and are absorbed by the semi-rigid absorbent material. A second embodiment of the invention includes an applicator for inserting a body insert into the body cavity. The body insert includes a semi-rigid absorbent material surrounded by a thin sheet of a lubricating material such as Telfa. The body insert may also include a medicant.
Hydrogel wound dressings exhibiting reduced fiber losses in use
A wound dressing comprising: a water-absorbent fabric comprising at least about 10 wt. % of hydrogel-forming absorbent fibers based on the dry weight of the fabric; and an adhesion-resistant, water-permeable wound contacting surface textile layer that is substantially continuously bonded to at least one surface of said fabric. The surface textile layer may be formed by surface treatment of the fabric, or by bonding a suitable textile web to the surface of the fabric.
Hydrogel wound dressings exhibiting reduced fiber losses in use
A wound dressing comprising: a water-absorbent fabric comprising at least about 10 wt. % of hydrogel-forming absorbent fibers based on the dry weight of the fabric; and an adhesion-resistant, water-permeable wound contacting surface textile layer that is substantially continuously bonded to at least one surface of said fabric. The surface textile layer may be formed by surface treatment of the fabric, or by bonding a suitable textile web to the surface of the fabric.