Tampon assembly having a shaped pledget

Patent metadata

Field	Value
Publication number	US-10105267-B2
Application number	US-201715398298-A
Country	US
Kind code	B2
Filing date	Jan 4, 2017
Priority date	May 2, 2003
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A tampon assembly having a barrel, a plunger, and a pledget is provided. The plunger is slidably received in the barrel. The pledget is in the barrel between the insertion tip and the plunger so that a force applied on the plunger can expel the pledget from the barrel. The barrel has a plurality of petals defining an insertion tip, which has a first taper ratio of more than about 0.3 to less than 1.0. The pledget has a shaped tip that is disposed in the insertion tip.

First claim

What is claimed is:

1. A tampon assembly comprising:
a barrel comprised of a single layer tubular wall comprised of low density polyethylene, having a first end and a second end, the barrel having a cylindrical section located between the first end and the second end and a plurality of discrete petals at the first end that define a tapered insertion tip section, the discrete petals being separated from each other by a plurality of cuts through the tubular wall, each of the plurality of cuts having a terminal end adjacent a base region of the plurality of discrete petals, the tapered insertion tip section extending a first length measured from the cylindrical section of the barrel to the first end of the barrel, the cylindrical section of the barrel being longer than the first length of the tapered insertion tip section, the tapered insertion tip section having a first taper ratio defined as a radius of the barrel at the base region divided by the first length of the tapered insertion tip section, the first taper ratio being between about 0.3 to less than 1.0;
a pledget located within the barrel, the pledget having a cylindrical portion that is located within the cylindrical section of the barrel, the pledget having an insertion end region that has been compressed to form a tapered pledget tip, the tapered pledget tip having an outer radial dimension that is at least about 85% of an inner radial dimension of the insertion tip section such that the tapered pledget tip supports a portion of an inner surface area of the plurality of petals when the pledget tip is positioned adjacent the first end, the tapered pledget tip having a second taper ratio that is defined as a radius of the pledget at the cylindrical portion divided by a second length of the tapered pledget tip, the second taper ratio being greater than the first taper ratio, the tapered pledget tip fitting within the tapered insertion tip section and occupying at least about 50% of the first length of the tapered insertion tip section of the barrel, and
a plunger slidably received in the second end of the barrel and extending beyond the plurality of protrusions on the outer circumference of the tubular wall, the plunger moving through the cylindrical section of the barrel while expelling the pledget from the barrel.

2. The tampon assembly according to claim 1 , wherein the tapered pledget tip occupies at least about 75% of the first length of the tapered insertion tip section.

3. The tampon assembly according to claim 1 , wherein the tapered pledget tip has a greater density than an adjacent region of the pledget prior to the tampon assembly being inserted into a user.

4. The tampon assembly according to claim 1 , wherein the tapered insertion tip section is generally elliptical in shape.

5. The tampon assembly according to claim 1 , wherein the tapered pledget tip occupies at least about 50% of the volume of the tapered insertion tip section.

6. The tampon assembly according to claim 1 , wherein the tapered pledget tip occupies at least about 75% of the volume of the tapered insertion tip section.

7. The tampon assembly according to claim 1 , wherein the first taper ratio is about 0.6.

8. The tampon assembly according to claim 1 , wherein the barrel is further comprised of a friction-reducing material.

9. The tampon assembly according to claim 1 , wherein the pledget is comprised of rayon fibers that are compressed to form the tapered pledget tip.

10. The tampon assembly according to claim 1 , wherein the plunger is comprised of high-density polyethylene.

11. A tampon assembly comprising:
a barrel comprised of a single layer tubular wall comprised of low density polyethylene, having a first end and a second end, the barrel having a cylindrical section located between the first end and the second end and a plurality of discrete petals at the first end that define a tapered insertion tip section, the discrete petals being separated from each other by a plurality of cuts through the tubular wall, each of the plurality of cuts having a terminal end adjacent a base region of the plurality of discrete petals, the tapered insertion tip section extending a first length measured from the cylindrical section of the barrel to the first end of the barrel, the cylindrical section of the barrel being longer than the first length of the tapered insertion tip section, the tapered insertion tip section having a first taper ratio defined as a radius of the barrel at the base region divided by the first length of the tapered insertion tip section, the first taper ratio being between about 0.6, the barrel including a friction-reducing material;
a pledget located within the barrel, the pledget having a cylindrical portion that is located within the cylindrical section of the barrel, the pledget having an insertion end region that has been compressed to form a tapered pledget tip having a density that is greater than an adjacent region of the pledget, the tapered pledget tip having an outer radial dimension that is at least about 85% of an inner radial dimension of the insertion tip section such that the tapered pledget tip supports a portion of an inner surface area of the plurality of petals when the pledget tip is positioned adjacent the first end, the tapered pledget tip having a second taper ratio that is defined as a radius of the pledget at the cylindrical portion divided by a second length of the tapered pledget tip, the second taper ratio being greater than the first taper ratio, the tapered pledget tip fitting within the tapered insertion tip section and occupying at least about 50% of the first length of the tapered insertion tip section of the barrel; and
a plunger slidably received in the second end of the barrel, the plunger moving through the cylindrical section of the barrel while expelling the pledget from the barrel.

12. The tampon assembly according to claim 11 , wherein the tapered pledget tip occupies at least about 75% of the first length of the tapered insertion tip section.

13. The tampon assembly according to claim 11 , wherein the friction-reducing material is in the form of a coating.

14. The tampon assembly according to claim 11 , wherein the tapered insertion tip section is generally elliptical in shape.

15. The tampon assembly according to claim 11 , wherein the plunger is comprised of high-density polyethylene.

16. A tampon assembly comprising:
a barrel comprised of a single layer tubular wall comprised of low density polyethylene, having a first end and a second end, the barrel having a cylindrical section located between the first end and the second end and a plurality of discrete petals at the first end that define a tapered insertion tip section, the discrete petals being separated from each other by a plurality of cuts through the tubular wall, each of the plurality of cuts having a terminal end adjacent a base region of the plurality of discrete petals, the tapered insertion tip section extending a first length measured from the cylindrical section of the barrel to the first end of the barrel, the cylindrical section of the barrel being longer than the first length of the tapered insertion tip section, the tapered insertion tip section having a first taper ratio defined as a radius of the barrel at the base region divided by the first length of the tapered insertion tip section, the first taper ratio being between about 0.3 to less than 1.0;
a pledget located within the barrel, the pledget having a cylindrical portion that is located within the cylindrical section of the barrel, the pledget having an insertion end region that has been comp

Assignees

• Edgewell Personal Care Brands Llc
• Edgewell Personal Care Brands Llc

Inventors

• Edgett Keith
• Gorham Patrick
• Jarmon George
• Lemay Jessica

Classifications

• A61F13/208

  having means for avoiding leakage, e.g. liquid impermeable withdrawal end (A61F13/204 takes precedence) · CPC title

• A61F2013/15365

  Dimensions · CPC title

• A61F13/202

  Catamenial tampons (A61F13/2022-A61F13/34 take precedence) · CPC title

• A61F13/266 Primary

  Insertion devices, e.g. rods or plungers, separate from the tampon · CPC title

• A61F13/26

  Means for inserting tampons {, i.e. applicators} · CPC title