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US 11,266,534 B2Granted
Extensible dressings
AssigneeJohnson & Johnson Consumer Inc.
InventorsMarisha Gogolowski, Carmine Rizzo
Life of this patent
Estimating the term…
Abstract
The present invention generally relates to dressings such as bandages or tapes having improved extensibility and conformability to human skin and joints.
Claims19
A dressing comprising:
- a layer of non-cellulosic material having:
- (i) a length direction (L), a width direction (W), and a thickness direction (T) respectively defining axes in three mutually orthogonal directions, the length direction (L) and the width direction W defining a horizontal plane (“the LW plane”), and the thickness direction (T) defining an up-down direction or a vertical direction relative to the LW plane, the layer of material having a thickness taken in the thickness direction;
- and
- (ii) a plurality of material free regions, each of the material free regions extending through the thickness of at least a portion of the layer of material and the plurality of the material free regions being arranged in the form of a pattern of concentric slitted annuli having a center point (P) in the LW plane, the pattern of concentric slitted annuli having, relative to center point P, a radially innermost concentric annulus and a radially outermost concentric annulus, the innermost and the outermost concentric annuli respectively having the shortest and the longest diameters,
- wherein the plurality of the material free regions is arranged end to end, separated by a plurality of spatial intervals, such that any material free region In located in any concentric annulus I subtends a non-zero valued angle, αIn, at the center point P, where n represents the number identifying a material free region in an annulus having material free regions arranged numerically consecutively in such annulus,
- wherein the sum of the non-zero valued angles subtended by the plurality of the material free regions at the center point P, within any one of the concentric annuli, is less than 360 degrees, and
- wherein the material free regions of any one of the concentric annuli are in a radially staggered relation with respect to the material free regions in any adjacent inner and/or adjacent outer concentric annulus,
- wherein material free regions that are resiliently openable in the thickness direction T of the dressing to expand at least a portion of the dressing into a three dimensional configuration that is conformable to a three dimensional contour of a skin surface to which the dressing may be applied.
5 more elements
A dressing comprising:
- a layer of non-cellulosic material having:
- (i) a length direction (L), a width direction (W), and a thickness direction (T) respectively defining axes in three mutually orthogonal directions, the length direction (L) and the width direction W defining a horizontal plane (“the LW plane”), and the thickness direction (T) defining an up-down direction or a vertical direction relative to the LW plane, the layer of material having a thickness taken in the thickness direction;
- and
- (ii) a plurality of material free regions, each of the material free regions extending through the thickness of at least a portion of the layer of material and the plurality of the material free regions being arranged in the form of a pattern of concentric slitted annuli having a center point (P) in the LW plane, the pattern of concentric slitted annuli having, relative to center point P, a radially innermost concentric annulus and a radially outermost concentric annulus, the innermost and the outermost concentric annuli respectively having the shortest and the longest diameters,
- wherein the plurality of the material free regions is arranged end to end, separated by a plurality of spatial intervals, such that any material free region In located in any concentric annulus I subtends a non-zero valued angle, αIn, at the center point P, where n represents the number identifying a material free region in an annulus having material free regions arranged numerically consecutively in such annulus,
- wherein the sum of the non-zero valued angles subtended by the plurality of the material free regions at the center point P, within any one of the concentric annuli, is less than 360 degrees, and
- wherein the material free regions of any one of the concentric annuli are in a radially staggered relation with respect to the material free regions in any adjacent inner and/or adjacent outer concentric annulus,
- wherein material free regions are resiliently openable in the thickness direction T of the dressing to expand at least a portion of the dressing into a three dimensional configuration that is conformable to a three dimensional contour of a skin surface to which the dressing may be applied, and
- wherein any material free region of any radially concentric annulus has an axis of symmetry bisecting the angle subtended by the material free region at the center point P.
6 more elements
A dressing comprising:
- a layer of non-cellulosic material having:
- (i) a length direction (L), a width direction (W), and a thickness direction (T) respectively defining axes in three mutually orthogonal directions, the length direction (L) and the width direction W defining a horizontal plane (“the LW plane”), and the thickness direction (T) defining an up-down direction or a vertical direction relative to the LW plane, the layer of material having a thickness taken in the thickness direction;
- and
- (ii) a plurality of material free regions, each of the material free regions extending through the thickness of at least a portion of the layer of material and the plurality of the material free regions being arranged in the form of a pattern of concentric slitted annuli having a center point (P) in the LW plane, the pattern of concentric slitted annuli having, relative to center point P, a radially innermost concentric annulus and a radially outermost concentric annulus, the innermost and the outermost concentric annuli respectively having the shortest and the longest diameters,
- wherein the plurality of the material free regions is arranged end to end, separated by a plurality of spatial intervals, such that any material free region In located in any concentric annulus I subtends a non-zero valued angle, αIn, at the center point P, where n represents the number identifying a material free region in an annulus having material free regions arranged numerically consecutively in such annulus,
- wherein the sum of the non-zero valued angles subtended by the plurality of the material free regions at the center point P, within any one of the concentric annuli, is less than 360 degrees, and
- wherein the material free regions of any one of the concentric annuli are in a radially staggered relation with respect to the material free regions in any adjacent inner and/or adjacent outer concentric annulus,
- wherein material free regions are resiliently openable in the thickness direction T of the dressing to expand at least a portion of the dressing into a three dimensional configuration that is conformable to a three dimensional contour of a skin surface to which the dressing may be applied, and
- wherein:
- (a) any material free region In further has an axis of symmetry that bisects the non-zero valued angle αIn;
- (b) any material free region Kn located in any concentric annulus K that is adjacent to concentric annulus I and proximate to material free region In, subtends a non-zero valued angle αKn at the center point P and has an axis of symmetry that bisects the non-zero valued angle αKn;
- (c) the axis of symmetry of the material free region In is staggered by an angle φ from the axis of symmetry of the material free region Kn;
- and
- (d) the angle φ has a value that falls within a range specified by the equation:
- 0° <φ<(αIn+αKn).
12 more elements
A dressing comprising:
- a layer of non-cellulosic material having:
- (i) a length direction (L), a width direction (W), and a thickness direction (T) respectively defining axes in three mutually orthogonal directions, the length direction (L) and the width direction W defining a horizontal plane (“the LW plane”), and the thickness direction (T) defining an up-down direction or a vertical direction relative to the LW plane, the layer of material having a thickness taken in the thickness direction;
- and
- (ii) a plurality of material free regions, each of the material free regions extending through the thickness of at least a portion of the layer of material and the plurality of the material free regions being arranged in the form of a pattern of concentric slitted annuli having a center point (P) in the LW plane, the pattern of concentric slitted annuli having, relative to center point P, a radially innermost concentric annulus and a radially outermost concentric annulus, the innermost and the outermost concentric annuli respectively having the shortest and the longest diameters,
- wherein the plurality of the material free regions is arranged end to end, separated by a plurality of spatial intervals, such that any material free region In located in any concentric annulus I subtends a non-zero valued angle, αIn, at the center point P, where n represents the number identifying a material free region in an annulus having material free regions arranged numerically consecutively in such annulus,
- wherein the sum of the non-zero valued angles subtended by the plurality of the material free regions at the center point P, within any one of the concentric annuli, is less than 360 degrees, and
- wherein the material free regions of any one of the concentric annuli are in a radially staggered relation with respect to the material free regions in any adjacent inner and/or adjacent outer concentric annulus,
- wherein material free regions are resiliently openable in the thickness direction T of the dressing to expand at least a portion of the dressing into a three dimensional configuration that is conformable to a three dimensional contour of a skin surface to which the dressing may be applied, and wherein each concentric annulus has a concentric centerline.
5 more elements
Dependencies are inferred from the claim text.