Patent Application
20240091076
This application is directed to a system of pantiliners and menstrual pads that can be used to alleviate undesirable conditions associated with dysmenorrhea. By including a top layer of composite material that includes a body heat-loss decelerating and bacteria repelling material and a ventilation layer, the system of pantiliners and menstrual pads of the invention are able to bring about a decrease of number of days of cramp, and a decrease of pain during menstrual cycle.
Menstrual pads, or female sanitary napkins, are common consumer products that females use to take care of menstrual blood during their menstrual cycle. To achieve the primary function of absorbing and retaining the menstrual blood, most menstrual pads focus on using materials that are suitable as absorbents.
The Chinese utility model patent ZL 200820188997.8 (the '997 patent) (Chinese Publication CN201260741) describes the use of nanoparticles as part of menstrual pads to stabilize the normal body temperature as a way to modify and decrease pain sensation during the menstrual period. On the other hand, the Chinese utility model patent ZL 201020229032.6 (the '032 patent) (Chinese Publication CN201755286) describes the use of materials that can allow the ventilation of moisture and warm air as part of menstrual pads. However, menstrual pads according to these two Chinese documents (the '997 and '032 patents) do not satisfy female consumers because: (a) they are not effective in diminishing the sensation of pain, and (b) any imprecise placement of the menstrual pad often would lead to leakage and falling off.
The Health Gate pantiliners and menstrual pads (https://healthgate.me/anion-sanitary-napkins/) are supposed to inhibit reproduction of anaerobic bacteria, improve micro-circulation, increase the growth of bio-enzyme, regulate acidic secretions in the vaginal and improve women's self-protection and disease prevention ability. In addition, strontium ferrite is also added in the anion chip, which is bio-magnetic and activates the human bio-current, preventing various diseases and vaginal itching. But the Health Gate article does not provide scientific reasoning behind these biological effects. The Health Gate products also use water-absorbing particles that are fully wrapped by strictly sterilized, and dust-free paper. However, the Health Gate products do not disclose much detail on how the anion layer and the water-absorbing components are constructed. Furthermore, the Health Gate products do not suggest how to deal with leakage that a user would encounter.
Technological advances have provided new techniques for delivering far infrared radiation (FIR) to the human body. Specialty lamps and saunas, delivering pure FIR radiation, have become safe, effective, and widely used sources to generate therapeutic effects. Fibers impregnated with FIR emitting ceramic nanoparticles or coated with nano Zn/ZnO particles by the method of physical vapor deposition (PVD), are also found to be effective to alleviate muscle and joint pains.
Far infrared radiation has been reported to exhibit many biological effects by Vatansever et al. (Photonics Laser Med. 2012, 4, 225-266). The Vatansever report refers to another study using far infrared radiation emitting sericite belt to treat primary dysmenorrhea was carried out by C. H. Lee et al. (Complementary Therapies in Medicine 2011, 19, 187-193). It was found that the level of pain among the group of patients wearing the sericite belt was reduced more significantly than the patients wearing the placebo. However, no major difference was observed regarding the number of patients needing analgesics. Because this study according to C. H. Lee et al. involves a belt with infrared emitting sericite, this approach of using an infrared emitting belt is not suitable for pantiliners and menstrual pads.
Another study of the inhibitory effects of the far infrared emitting belt on primary dysmenorrhea was reported by B. Y. Liau et al. (International J. Photoenergy, 2012, Article 238468). It was shown that such treatment led to increasing regional surface temperature and abdominal blood flow and, reducing the level of pain. However, in this study according to B. Y. Liau et al., the far infrared emitting belt requires preheating at 50° C. for 30 minutes, and thus would not be suitable for pantiliners and menstrual pads.
Therefore, there is still a need to provide a system of pantiliners and menstrual pads that can provide alleviation of painful sensation during the menstrual period.
Menstruation is the preparation for the next ovulation to take place. The menstrual cycle is an integral part of the physiology of females from puberty to menopause. Each menstrual cycle is about 28 days long, that includes:
Menstruation usually lasts for 3-6 days, with a flow volume of about 2 ml to 10 ml each for 12 to 20 times. The total flow volume should not exceed 80 ml to 100 ml for each menstruation. If fertilization fails to complete or does not occur, menstruation will resume after about 28 days from the first day of the previous menstrual cycle.
Premenstrual syndrome (PMS) is a combination of uncomfortable feelings that occur during days 23-28 of the menstrual cycle. PMS symptoms include:
Treatments of PMS are primarily using medication, exercising, or healthy diet to relieve the symptoms. However, there is no cure or prevention of PMS in today's medical service.
Primary dysmenorrhea and secondary dysmenorrhea are different types of pain being experienced during menstruation. According to the Cleveland Clinic, primary dysmenorrhea, or otherwise known as menstrual cramps, is related to the common and recurring pain that is not due to any disease (https://my.clevelandclinic.org/health/articles/dysmenorrhea). Menstrual cramps usually take place during days 1-3 of the menstrual cycle. To treat menstrual cramps in primary dysmenorrhea, taking pain-relieving medications such as ibuprofen, aspirin, or acetaminophen is common but not as effective as to other pains such as headaches, fever, etc. In addition, using heat pads (heat source facilitator), yoga (aerobic exercise), and massaging are the common approaches to relieve the pain of menstrual cramps.
Furthermore, primary dysmenorrhea, or menstrual cramps usually originate from pelvic organs, and the affected areas include the lower abdomen, spinal, back, and thigh. Menstrual cramps arise when the uterine muscle is tense and fatigue due to the slow restoration of adenosine triphosphate (ATP) for muscle movement. For muscles to relax, the myosin filaments are required to detach from the actin filaments, and such process requires ATP. Menstrual cramp is common if the body temperature is lower than 37° C. for a long time. According to traditional Chinese medicine (TCM) theory, when the body is cold or being affected by bad weather, primary dysmenorrhea is more likely to happen.
Secondary dysmenorrhea is related to a disorder of the woman's reproductive system such as endometriosis, adenomyosis, uterine fibroids, and infections. Muscle cramps encountered in secondary dysmenorrhea could be more sustained and intense. If secondary dysmenorrhea is suspected, immediate consultation with a medical professional and the performance of laboratory tests and pelvic examination are recommended because secondary dysmenorrhea can be very serious to body wellness.
According to a study of the prevalence of primary dysmenorrhea by Burnett et al. (J. Obstet. Gynecol. Can. 2005, 27, 765-70):
Although cramps will usually subside as menstruation tapers off, analgesics and hormones cannot reduce pains effectively. However, if wrong and improper medications are used, then there could be more harm being done to the body. Therefore, it is the intention of the invention to achieve the goal of relieving painful conditions associated with menstrual cramps without the use of any medication.
According to an embodiment of the invention, a pantiliner of the invention includes: (1) a top layer of composite material; (2) a ventilation layer; and (3) a bottom layer of breathable material. The top layer of composite material includes: (a) at least one layer of liquid permeable and breathable material, (b) at least one layer of structured glue, and (c) at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric. The pantiliner is adapted and arranged to be useful during the premenstrual phase of a user of the pantiliner.
According to an embodiment of the pantiliner of the invention, regarding the top layer of composite material, the at least one layer of liquid permeable material comprises a polyethylene synthesized from non-woven fabric. The at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric comprises fibers; and each fiber has a core part and a sheath part. The core part of the fiber comprises polypropylene as the primary material and nanosized metal compound as the secondary material. The sheath part of the fiber comprises polyethylene as the primary material and nanosized metal compound as the secondary material.
According to an embodiment of the pantiliner of the invention, the nanosized metal compound in the fibers is a far infrared emitting metal compound that is a member of the group consisting of aluminum oxide, aluminum silicate, calcium carbonate, iron oxide, magnesium oxide, nickel oxide, silicon carbide, silicon dioxide, tin dioxide, titanium dioxide, zinc oxide, zirconium carbide, zirconium dioxide, and zirconium silicate, whereby the nanosized metal compound provides the user of the pantiliner: (a) relief of premenstrual syndrome by reducing body heat loss, and (b) reduced risk of infection by repelling bacteria that are mostly negatively charged.
According to an embodiment of the pantiliner of the invention, the ventilation layer is a non-woven sheet treated with polyethylene, and is sponge-like in structure having sufficient spaces for air ventilation, and the ventilation layer is rectangular in shape, having a width of 5.0 cm to 8.0 cm, and a length of 14.0 cm to 16.0 cm, whereby the ventilation layer provides the user of the pantiliner sufficient airflow by maintaining ventilation.
According to an embodiment, a menstrual pad of the invention includes: (1) a top layer of composite material having a skin contact surface; (2) an air-laid sheet; (3) a layer of super absorbent polymer inside the air-laid sheet; (4) a ventilation layer; and (5) a bottom layer of breathable material. The top layer of composite material comprises: (a) at least one layer of liquid permeable material, (b) at least one layer of structured glue, and (c) at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric. The air-laid sheet is in the shape of an extendible tube that creates a wrap enclosure, and the menstrual pad is adapted and arranged to be useful during menstrual phase of a user of the menstrual pad.
According to an embodiment of the menstrual pad of the invention, regarding the top layer of composite material, the at least one layer of liquid permeable and breathable material comprises a polyethylene synthesized from non-woven fabric. The at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric comprises fibers; and each fiber has a core part and a sheath part. The core part of the fiber comprises polypropylene as the primary material and nanosized metal compound as the secondary material. The sheath part of the fiber comprises polyethylene as the primary material and nanosized metal compound as the secondary material.
According to an embodiment of the menstrual pad of the invention, the nanosized metal compound in the fibers is a far infrared emitting metal compound that is a member of the group consisting of aluminum oxide, aluminum silicate, calcium carbonate, iron oxide, magnesium oxide, nickel oxide, silicon carbide, silicon dioxide, tin dioxide, titanium dioxide, zinc oxide, zirconium carbide, zirconium dioxide, and zirconium silicate, whereby the nanosized metal compound provides the user of the menstrual pad: (a) relief of premenstrual syndrome by reducing body heat loss, and (b) reduced risk of infection by repelling bacteria that are mostly negatively charged.
According to an embodiment of the menstrual pad of the invention, with respect to the air-laid sheet, the extendible tube has a first edge and a second edge, the first edge and the second edge have an overlapping zone. The wrap enclosure has a lateral width, and the overlapping zone of the extendible tube has a length that is at least larger than one-half of the lateral width of the wrap enclosure. The air-laid sheet comprises polypropylene spun-bond fabric that is liquid permeable.
According to an embodiment of the pantiliner of the invention, the ventilation layer is a non-woven sheet treated with polyethylene, and is sponge-like in structure having sufficient spaces for air ventilation, whereby the ventilation layer provides the user of the menstrual pad sufficient airflow by maintaining ventilation.
According to an embodiment of the invention, the menstrual pad further includes: (6) a right placement mark on the right side of the menstrual pad, and a left placement mark on the left side of the menstrual pad. The right placement mark and the left placement mark each has a diameter of 3 mm to 8 mm. The right placement mark and the left placement mark each is printed or embossed on the skin contact surface.
According to an embodiment of the invention, the menstrual pad further includes: (7) a right split wing on the right side of the menstrual pad, and a left split wing on the left side of the menstrual pad. The right split wing can be split into an upper right split wing and a lower right split wing along a right split line. The left split wing can be split into an upper left split wing and a lower left split wing along a left split line.
According to an embodiment of a menstrual pad for use in daytime during the menstrual phase, the top layer of composite material and the bottom layer of breathable material each has an overall shape that is essentially identical with each other. The overall shape is dumbbell oval, having a minimal lateral width, a first maximal lateral width at an anterior end, a second maximal lateral width at a posterior end, and a longitudinal length. The minimal lateral width is 6.5 cm to 7.5 cm, the first maximal lateral width is 9.0 cm to 11.0 cm, the second maximal lateral width is 9.5 cm to 11.0 cm, and the longitudinal length is 23.0 cm to 26.0 cm.
According to an embodiment of a menstrual pad for use in nighttime during the menstrual phase, the top layer of composite material and the bottom layer of breathable material each has an overall shape that is essentially identical with each other. The overall shape is calabash oval, having a minimal lateral width, a first maximal lateral width at an anterior end, a second maximal lateral width at a posterior end, and a longitudinal length. The minimal lateral width is 7.5 cm to 9.5 cm, the first maximal lateral width is 9.5 cm to 11.0 cm, the second maximal lateral width is 14.0 cm to 16.0 cm, and the longitudinal length is 28.0 cm to 38.0 cm.
According to an embodiment of the invention, a method of using pantiliners and menstrual pads, includes the steps of: (a) using pantiliners during premenstrual phase, (b) using menstrual pads for use in daytime during daytime in menstrual phase, and (c) using menstrual pads for use in nighttime during nighttime in menstrual phase. The premenstrual phase can be 5-6 days, and the menstrual phase can be 4-6 days.
According to an embodiment of the invention, a method of determining primary dysmenorrhea in a user of a menstrual pad, includes the steps of: (a) observing a number of days of menstrual cramps without using the menstrual pad; (b) observing a number of days of menstrual cramps with using the menstrual pad; (c) subtracting the number of days of menstrual cramps with using the menstrual pad from the number of days of menstrual cramps without using the menstrual pad to obtain a shortened number of days of menstrual cramps, wherein the shortened number of days of menstrual crams is 1, 2, 3, 4, 5, or 6; (d) ranking effectiveness of the menstrual pad in shortening menstrual cramp as: (1) not effective, if the shortened number of days of menstrual cramp is 0; (2) moderately effective if the shortened number of day of menstrual cramp is 1; and (3) significantly effective if the shortened number of days of menstrual cramp is 2 or longer; (e) numerically describing a level of pain at the start of menstrual period with respect to a scale from 1 to 10, with “1” as the mildest level of pain, and “10” as the most severe level of pain; (f) numerically describing a level of pain at the end of menstrual period with respect to a scale from 1 to 10, with “1” as the mildest level of pain, and “10” as the most severe level of pain; (g) subtracting the level of pain at the end of menstrual period from the level of pain at the start of menstrual period to obtain a decrease level of pain, wherein the decrease level of pain is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; (h) ranking effectiveness of the menstrual pad in decreasing pain as: (1) not effective, if the decrease level of pain is 0; (2) moderately effective, if the decrease level of pain is 1, 2, or 3; and (3) significantly effective, if the decrease level of pain is 4 or more, and (i) determining the user of the menstrual pad as having primary dysmenorrhea: (1) if the effectiveness of the menstrual pad in shortening the number of days of menstrual cramp is moderately effective, or significantly effective, or (2) if the effectiveness of the menstrual pad in decreasing level of pain is moderately effective, or significantly effective.
According to an embodiment of the invention, a package of pantiliners and menstrual pads includes (1) a plurality of pantiliners; (2) a plurality of menstrual pads for use in daytime; and (3) a plurality of menstrual pads for use in nighttime. The plurality of pantiliners is 10 to 12 pieces, the plurality of menstrual pad for use in daytime is 15 to 18 pieces, and the plurality of menstrual pad for use in nighttime is 4 to 6 pieces.
The invention uses a System of Pantiliners and Menstrual Pads that include a top layer of composite material that consists of a heat-loss decelerating, bacteria repelling and magnetic lines material, and a ventilation layer. As shown below in Example 1 and Table 2, by using pantiliners and menstrual pads according to the invention, users experience a reduced level of pain in menstrual cramps: (a) for some users, their level of pain changes from severe to moderate; (b) for some users, their level of pain changes from moderate to mild, and (c) for some users, their level of pain changes from mild to minimal.
This invention uses a heat-loss decelerating and bacteria repelling layer that contains far infrared radiation as well as negative ion emitting materials. It is generally believed that: (a) heat energy is transferred from the human body to the far infrared radiation emitting materials, and (b) heat energy is transferred from the far infrared radiation emitting materials back to the surface of the human body. As a result, in the presence or close proximity of the far infrared radiation emitting materials, heat loss from the body is minimized or decelerated. Thus, the consumption of ATP to keep the body warm is reduced, resulting in an abundance level of ATP. A higher level of ATP is beneficial because ATP also contributes to the relaxation of muscle by its binding to the myosin fibers and the detachment from the actin filaments. And also, it is generally believed that negative ion can give rise a bacteria-free environment as over 99.5% of bacteria carries negative charges in a warm and wet environment. This invention also uses a ventilation layer that can greatly reduce heat and moisture around so that fresh and clean air with ambient temperature around that further ensures user comfortability.
This invention is about delivering an effective solution to help alleviate premenstrual symptom PMS and primary dysmenorrhea without the addition of any additives including drugs, herbals, fragrances or chemicals. Although this invention cannot treat pains due to secondary dysmenorrhea, it can be used as a tester to decide whether seeking immediate medical treatments by gynecologist when appropriates.
On the other hand, this invention enables the ownership of a SMALL HEALTH ENVIRONMENT for childbearing age women attributing to (a) up-keeping the temperature of the uterus constant at 37° C., (b) maintaining surface temperature same as the ambient temperature, and (c) providing and maintaining a ventilated and sanitized surrounding.
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According to an embodiment, a pantiliner of the invention includes: (1) a top layer of composite material; (2) a ventilation layer; and (3) a bottom layer of breathable material. The top layer of composite material includes: (a) at least one layer of liquid permeable material, (b) at least one layer of structured glue, and (c) at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric. The pantiliner is adapted and arranged to be useful during the premenstrual phase of a user of the pantiliner.
Referring to
According to an embodiment of the pantiliner of the invention, regarding the top layer of composite material, the at least one layer of liquid permeable material comprises a polyethylene synthesized from non-woven fabric. The at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric comprises fibers; and each fiber has a core part and a sheath part. The core part of the fiber comprises polypropylene as the primary material and nanosized metal compound as the secondary material. The sheath part of the fiber comprises polyethylene as the primary material and nanosized metal compound as the secondary material.
The description of the top layer of composite material can be found in
According to an embodiment of the pantiliner of the invention, the nanosized metal compound in the second layer of the top sheet of the fiber is a far infrared emitting metal compound that is a member of the group consisting of aluminum oxide, aluminum silicate, calcium carbonate, iron oxide, magnesium oxide, nickel oxide, silicon carbide, silicon dioxide, tin dioxide, titanium dioxide, zinc oxide, zirconium carbide, zirconium dioxide, and zirconium silicate.
As a result, the nanosized metal compound provides the user of the pantiliner: (a) relief of premenstrual syndrome by reducing heat loss, and (b) reduced risk of infection by repelling bacterial that are mostly negatively charged.
Additional examples of far infrared radiation emitting metal compounds have been reported by J. Y. Dea (U.S. Pat. No. 6,591,142) and J. H. Tsai (U.S. Pat. No. 7,754,345).
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One advantage of using nanosized far infrared emitting compounds is the effect of heat loss reduction. The embodiment of the invention is not about providing a heat-releasing pad, but a system of pantiliners and menstrual pad that generate FIR radiation to reduce the rate of body heat loss at the FIR radiation skin surface.
Another advantage is that the nanosized metal compound used in the shield casing (18) is capable of delivering 350 to 530 numbers of negative ions (anion) per cm3 per second statically. As over 99.5% of bacteria are carrying negative charges, releasing of static anion by the fiber (14) ensures there will not be any bacteria around the pantiliner (1) and the menstrual pad (2) because same electric charges repels each other.
The existence of magnetic lines here provides a simple means to identify the fabric is built with the FIR and anion releasing properties by a handy magnetic reader. All physical properties of FIR radiation, negative ions as well as magnetic lines are made to meet the highest standard of safety requirement to our body.
According to an embodiment of the pantiliner of the invention, the ventilation layer is a non-woven sheet treated with polyethylene, is sponge-like in structure having sufficient spaces for air ventilation. The ventilation layer is rectangular in shape, having a width of 5.0 cm to 8.0 cm, and a length of 14.0 cm to 16.0 cm. As a result, the ventilation layer provides the user of the pantiliner sufficient airflow by maintaining ventilation.
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According to an embodiment of the pantiliner of the invention, the bottom layer of breathable material is polyethylene PE being extruded into very thin film with thickness of 0.02 mm to 0.05 mm with breathable holes for air coming in and out but not possible for water or body liquid.
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According to an embodiment of the pantiliner of the invention, the top layer of composite material and the bottom layer of breathable material each has an overall shape that is essentially identical with each other. The overall shape is a dumbbell oval, having a minimal lateral width, a first maximal lateral width at an anterior end, a second maximal lateral width at a posterior end, and a longitudinal length.
The minimal lateral width is 5.0 cm to 6.0 cm, the first maximal lateral width is 6.0 cm to 8.0 cm, the second maximal lateral width is 6.0 cm to 8.0 cm, and the longitudinal length is 14.0 cm to 16.0 cm.
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According to an embodiment, a menstrual pad of the invention includes: (1) a top layer of composite material having a skin contact surface; (2) an air-laid sheet in the shape of a wrap-closure; (3) a layer of super absorbent polymer inside the air-laid wrap enclosure; (4) a ventilation layer; and (5) a bottom layer of breathable material.
The top layer of composite material comprises: (a) at least one layer of liquid permeable material, (b) at least one layer of structured glue, and (c) at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric. The air-laid sheet is in the shape of an extendible tube that creates a wrap enclosure, and the menstrual pad is adapted and arranged to be useful during menstrual phase of a user of the menstrual pad.
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According to an embodiment of the menstrual pad of the invention, regarding the top layer of composite material, the at least one layer of liquid permeable material comprises a polyethylene synthesized from non-woven fabric. The at least one layer of spun-bond polyethylene-polypropylene sheath-core bi-component fabric comprises fibers; and each fiber has a core part and a sheath part. The core part comprises polypropylene as the primary material and nanosized metal compound as the secondary material. The sheath part comprises polyethylene as the primary material and nanosized metal compound as the secondary material.
Similarly, the description of the top layer of composite material can be found in
According to an embodiment of the menstrual pad of the invention, the nanosized metal compound which is capable of releasing far-infrared radiation, bacteria repelling negative ions well as magnetic lines, is a member of the group consisting of aluminum oxide, aluminum silicate, calcium carbonate, iron oxide, magnesium oxide, nickel oxide, silicon carbide, silicon dioxide, tin dioxide, titanium dioxide, zinc oxide, zirconium carbide, zirconium dioxide, and zirconium silicate.
As a result, the nanosized metal compound provides the user of the menstrual pad: (a) relief of premenstrual syndrome by reducing heat loss, and (b) reduced risk of infection by repelling bacterial that are mostly negatively charged.
Referring to the various parts in
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One advantage of using nanosized far infrared emitting metal compounds is the effect of heat loss reduction. The embodiment of the invention is not about providing a heat-releasing pad, but a system of pantiliners and menstrual pad that generate FIR radiation to reduce the rate of body heat loss at the FIR radiation skin surface.
Another advantage is that the nanosized metal compound used in the shield casing (18) is capable of delivering 350 to 530 numbers of negative ions (anion) per cm3 per second statically. Over 99.5% of bacteria are carrying negative charges, releasing of static anion by the fiber (14) ensures there will not be any bacteria around the pantiliner (1) and the menstrual pad (2) because same electric charges repels each other.
The existence of magnetic lines here provides a simple means to identify the fabric is built with the FIR and anion releasing properties by a handy magnetic reader. All physical properties of FIR radiation, negative ions as well as magnetic lines are made to meet the highest standard of safety requirement to our body.
According to an embodiment of the menstrual pad of the invention, the extendible tube has a first edge and a second edge, the first edge and the second edge have an overlapping zone. The wrap enclosure has a lateral width, and the overlapping zone of the extendible tube has a length that is at least larger than one-half of the lateral width of the wrap enclosure. The air-laid sheet comprises polypropylene spun-bond fabric that is liquid permeable.
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According to an embodiment of the menstrual pad of the invention, the layer of super absorbent polymer or called SAP-sheet (33) comprises super absorbent polymer granules that are pressed between two thin wood dust pulps. The granules have a diameter of 0.03 mm to 0.05 mm when dry, and 1.1 mm to 1.8 mm when wet or swollen.
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The Super Absorbent Polymer (SAP) granules (31), measures 0.03-0.05 mm and 1.1-1.8 mm as diameter in dry mode and wet swollen mode respectively. The polymeric absorbing material (31) that is substantially super body liquid absorbable, water-insoluble and naturally neutralized, weights 150 gsm (grams per square meter) to 200 gsm.
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According to an embodiment of the menstrual pad of the invention, the ventilation layer is a non-woven sheet treated with polyethylene PE, is sponge-like in structure having sufficient spaces for air ventilation. As a result, the ventilation layer provides the user of the menstrual pad sufficient airflow by maintaining ventilation.
Referring to
According to an embodiment of the menstrual pad of the invention, the bottom layer of breathable material is polyethylene PE being extruded to very thin film with thickness of 0.02 mm to 0.05 mm with breathable holes for air coming in and out but not possible for water or body liquid.
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According to an embodiment of the invention, the menstrual pad further includes a right placement mark on the right side of the menstrual pad, and a left placement mark on the left side of the menstrual pad. The right placement mark and the left placement mark each has a diameter of 3 mm to 8 mm. The right placement mark and the left placement mark each is printed or embossed on the skin contact surface.
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, or company logo with diameter 3-8 mm being printed or embossed on the two anterior corner adjacent to the left wing and the right wing.
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According to an embodiment of the invention, the menstrual pad further includes a right split wing on the right side of the menstrual pad, and a left split wing on the left side of the menstrual pad. The right split wing can be split into an upper right split wing and a lower right split wing along a right split line. The left split wing can be split into an upper left split wing and a lower left split wing along a left split line.
Referring to
According to an embodiment of a menstrual pad for use in daytime during the menstrual phase, the top layer of composite material and the bottom layer of breathable material each has an overall shape that is essentially identical with each other. The overall shape is dumbbell oval, having a minimal lateral width, a first maximal lateral width at an anterior end, a second maximal lateral width at a posterior end, and a longitudinal length. The minimal lateral width is 6.5 cm to 7.5 cm, the first maximal lateral width is 9.0 cm to 11.0 cm, the second maximal lateral width is 9.0 cm to 11.0 cm, and the longitudinal length is 23.0 cm to 26.0 cm.
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According to an embodiment of a menstrual pad for use in daytime during the menstrual phase, the wrap enclosure is rectangular in shape, having a width of 5.0 cm to 6.0 cm, and a length of 19.0 cm to 23.0 cm. The layer of super adsorbent polymer inside the wrap enclosure is rectangular in shape, having a width of 4.5 cm to 5.5 cm, and a length of 15.0 cm to 19.0 cm.
Referring to
According to an embodiment of a menstrual pad for use in daytime during the menstrual phase, the ventilation layer is rectangular in shape, having a width of 5.5 cm to 6.5 cm, and a length of 20.0 cm to 24.0 cm.
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According to an embodiment of a menstrual pad for use in nighttime during the menstrual phase, the top layer of composite material and the bottom layer of breathable material each has an overall shape that is essentially identical with each other. The overall shape is calabash oval, having a minimal lateral width, a first maximal lateral width at an anterior end, a second maximal lateral width at a posterior end, and a longitudinal length. The minimal lateral width is 7.5 cm to 9.5 cm, the first maximal lateral width is 9.5 cm to 11.5 cm, the second maximal lateral width is 14.0 cm to 16.0 cm, and the longitudinal length is 28.0 cm to 38.0 cm.
Referring to FIG. V, a top view of the menstrual pad (2) for use in nighttime during the menstrual cycle, and in
According to an embodiment of a menstrual pad for use in nighttime during the menstrual phase, the wrap enclosure is rectangular in shape, having a width of 6.5 cm to 7.5 cm, and a length of 24.0 cm to 32.0 cm. The layer of super adsorbent polymer inside the wrap enclosure is rectangular in shape, having a width of 5.5 cm to 7.0 cm, and a length of 18.0 cm to 28.0 cm.
Referring to FIG. V, an out-lined top-view of the nighttime menstrual pad (4), and in
According to an embodiment of a menstrual pad for use in nighttime during the menstrual phase, the ventilation layer is rectangular in shape, having a width of 7.0 cm to 8.5 cm, and a length of 28.0 cm to 38.0 cm.
Referring to
According to an embodiment of the invention, a method of using pantiliners and menstrual pads, includes the steps of: (a) using pantiliners according to claim 1 during premenstrual phase, (b) using menstrual pads for use in daytime according claim 16 during daytime in menstrual phase, and (c) using menstrual pads for use in nighttime according to claim 19 during nighttime in menstrual phase. The premenstrual phase can be 5-6 days, and the menstrual phase can be 4-6 days.
A method of determining primary dysmenorrhea in a user of a menstrual pad, includes the steps of:
In summary, for a user of menstrual pad having primary dysmenorrhea, the menstrual pad is considered to be effective in shortening the number of days of menstrual cramp if the menstrual pad can at least show “moderately effective,” or “significantly effective” in shortening the number of days having menstrual cramps. Similarly, the menstrual pad is considered to be effective in decreasing pain if the menstrual pad can at least show moderately effect,” or “significantly effective” in lowering the level of pain.
On the other hand, if the user of the menstrual pad does not experience any positive effect with regard to (a) shortening the number of days of menstrual cramp, or (b) decreasing the level of pain, then such user is likely to have secondary dysmenorrhea. Immediate medical diagnosis and treatment are recommended.
Referring to Tables 2, 3, and 4, the use of the menstrual pad system according to the invention is useful: (a) in shorting the number of days of menstrual cramps, and (b) in decreasing the level pain. Users with primary dysmenorrhea will experience moderate effectiveness or significant effectiveness in either: (a) shortening the number of days of cramps, or (b) decreasing the level of pain. The users are recommended to continue to use the menstrual pad system of the invention.
In contrast, users with secondary dysmenorrhea will experience no effectiveness in either (a) shortening the number of days of cramps, or (b) decreasing the level of pain. They are recommended to seek help from a medical professional as soon as possible.
According to an embodiment of the invention, a package of pantiliners and menstrual pads includes: (1) a plurality of pantiliners; (2) a plurality of menstrual pads for use in daytime; and (3) a plurality of menstrual pads for use in nighttime. The plurality of pantiliners is 10 to 12 pieces, the plurality of menstrual pad for use in daytime is 15 to 18 pieces, and the plurality of menstrual pad for use in nighttime is 4 to 6 pieces.
Preferably, the plurality of pantiliners is 12 pieces that will be sufficient for 6 days with 1 for daytime and 1 for nighttime; preferably the plurality of menstrual pad for use in daytime is 18 pieces; and preferably the plurality of menstrual pad for use in nighttime is 6 pieces.
In summary, the invention provides a number of advantages to the pantiliners and the menstrual pads:
The following example is set forth so as to provide those of ordinary skill in the art with a complete disclosure and description of how to make and use the present invention. The example is not intended to limit the scope of what the inventors regard as their invention, nor are they intended to represent that the evaluation and testing described below are all or the only evaluation and testing performed.
A group of 29 users, having an average age 36 and a range of age from 24 to 55, was asked to report the effects of using menstrual pads that are equipped with a body heat-loss decelerating layer (Table 2). Each user started using the menstrual pads before the menstrual phase began for a certain number of days (column 3).
The users reported the number of days of menstrual cramps without using menstrual pads (column 4), and the number of days of menstrual cramps using pads (column 5). The data was analyzed and categorized in the following way (column 6): (a) if there was no change, the data is categorized as “none”; (b) if there was shortening of the number of days of menstrual cramps by one day, the data is categorized “moderate”; and (c) if there was shortening of the number of days of menstrual cramps by at least two days, the data is categorized as “significant”.
It can be observed that, with respect to the number of days experiencing menstrual cramps, 11 users showed no change of the number of days of cramp, 12 users showed “moderate” change, and 6 users showed “significant” change. Therefore, a combined 18 users out of 29 users showed that the use of a menstrual pad was effective in decreasing the number of days experiencing menstrual cramps.
The users also reported: (a) the level of pain at the start of period (column 7), with “1” as the mildest level of pain, and “10” as the most severe level of pain, and (b) the level of pain at the end of the period (column 8) with respect to a scale from 1 to 10, with “1” as the mildest level of pain, and “10” as the most severe level of pain. The data was analyzed and categorized in the following way (column 10): (a) if there was no change of the level of pain, the data is categorized as “none”; (b) if there was a decrease of pain by −1, −2, or −3, the data is categorized as moderate; and (c) if there was a decrease of pain by −4, −5, −6, or −7, the data is categorized as “significant”.
It can be observed that, with respect to the level of pain, 3 users showed no change of the level of pain, 10 users showed “moderate” change, and 16 users showed “significant” change. Therefore, a combined 26 users out of 29 users showed that the use of pad was effective in decreasing the level of pain.
It should be noted that user #1 and user #10 of the menstrual pad do not experience any improvement in terms of (a) the shortening of the number of days of menstrual cramps, and (b) the decrease of level of pain from the start of the menstrual period to the end of the menstrual period. A possible explanation is that both of these users do not have primary dysmenorrhea. Instead, they likely have secondary dysmenorrhea, which is related to a disorder of the woman's reproductive system such as endometriosis, adenomyosis, uterine fibroids, and infections. These users should seek medical help as soon as possible.
This application is a Continuation Application to U.S. patent application Ser. No. 18/105,787, filed on Feb. 3, 2023, which in turn is a Continuation Application to U.S. patent application Ser. No. 16/600,744, filed on Nov. 8, 2019, now U.S. Pat. No. 11,596,559, issued on Mar. 7, 2023. The entire teaching of the above applications is incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 18105787 | Feb 2023 | US |
| Child | 18514180 | US | |
| Parent | 16600744 | Nov 2019 | US |
| Child | 18105787 | US |
