CN112603660A

CN112603660A - Capacity adaptive fluid collection and storage container

Info

Publication number: CN112603660A
Application number: CN202110132211.0A
Authority: CN
Inventors: 高文
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-31
Filing date: 2021-01-31
Publication date: 2021-04-06

Abstract

The utility model provides a capacity self-adaptation storage container, can be used to the fluid collection storage, and the holding chamber wall of this container has fold structural feature, and the inflatable support holds the chamber behind the absorbent absorption fluid of holding the intracavity, through changing absorbent composition ratio, can adjust the saturated volume of container, changes container repeatedly usable behind the absorbent of absorbed fluid, reduces the discarded object economy more and environmental protection. The container can be used for female physiological period health care and body fluid detection sample collection, compared with the existing products in the same field comprehensively, has larger capacity, smaller overall dimension and stronger compression resistance, leakage resistance and backflow resistance, can realize the health care full-period coverage of the ovulatory period and the menstrual period, is safer to use for a long time in all weather, and is comfortable and reassuring in use experience.

Description

Capacity adaptive fluid collection and storage container

Technical Field

The present invention relates to a container for collecting and storing fluid, particularly to a container which is very critical to the size or capacity of a user, such as a container which is placed in a vaginal cavity for collecting and storing secretion, menstrual blood and other fluids during the female menstrual period.

Background

Cervical secretion, vaginal secretion and menstrual blood discharged from uterus during the period of female ovulation increase are discharged out of the body through the vagina, and how to make sanitary nursing during the female physiological period is particularly important for the female body health, particularly the health of the reproductive system. The sanitary products for women in physiological period which are industrially produced and sold in the market at present mainly comprise two major products of external use type and internal use type.

When the sanitary article is used, the sanitary article needs to be tightly attached to the vulva part of a female vagina, is sticky and stuffy and has peculiar smell when being used in summer, the menstrual blood amount is large or the sanitary article is easy to leak laterally when the body moves, harmful bacteria are easy to breed after secretions and the menstrual blood contact air and human excrement, if the sanitary article is not changed in time, the private parts are itchy and red and swollen when the pollutants contact the body for a long time, and various gynecological inflammations are easy to cause after long-term use.

When the built-in menstrual period article represented by a tampon and a menstrual cup is used, the built-in menstrual period article is placed in a vaginal cavity, the problem that menstrual blood contacts air and pollutants to breed bacteria and the like is basically avoided, no trace is exposed when a woman wears close-fitting single thin clothes, bathing, swimming and other activities can be carried out in a physiological period, and great convenience is brought to daily work and life of the woman.

Chinese patent document "built-in menstrual period sanitary article" CN208726050U (2019-04-12) provides a technical scheme, in which the basic structure of the collecting and storing container is similar to a hollow mushroom body, the container jacket is made of a water-tight flexible material, and the container is filled with a water absorbing material, the scheme (mushroom type sanitary article) does not actively absorb moisture of vaginal mucosa except for collecting and storing fluid flowing into the container, mainly solves the problems that a tampon placed in the vagina for a long time excessively absorbs moisture of mucosa and is easy to cause Toxic Shock Syndrome (TSS), and also avoids the defect that tampon fibers are easy to fall off in the vagina, and compared with a menstrual cup, the technical scheme is small in container size and suitable in body feeling, and the operation method using an auxiliary push tube is simpler and easier to use than that a menstrual cup is placed by hands.

If the tampon is not taken out in time after full menstrual blood is absorbed, the menstrual blood absorbed by the tampon usually seeps reversely due to the extrusion of internal organs of a body, and often leaks out of the vagina to pollute clothes, and the stored menstrual blood overflows and flows back into the vaginal cavity due to the body movement of a menstrual cup in the vagina. The environment in the healthy vaginal cavity is weakly acidic, harmful pathogens can be inhibited from breeding in the vagina by the weak acidity, and body infection such as vaginitis, cervicitis and the like can be caused by a large number of bred harmful pathogens. Menstrual blood is weakly alkaline, and if sanitary articles are taken out and poured out in time, the menstrual blood is remained in the vagina for a long time and can destroy acid-base balance in the vagina to cause pathogen breeding. Particularly, when the built-in sanitary product is used, the user is often in an anxiety state due to the worry that the user cannot directly obtain the menstrual blood collection amount, and the user is worried that the sanitary product cannot be taken out in time, so that the health hidden trouble is caused.

In the aspect of production and application, the sanitary product for menstrual period produced according to the prior art needs to be increased in size of a single sanitary product if the absorption capacity is increased, for example, the length of a sanitary towel with a small size is generally not more than 200 mm and is used when the menstrual blood amount is less or the secretion is increased, while the length of a sanitary towel with a large size is more than 400 mm, the sanitary towel is used when the menstrual blood amount is large or during sleeping, and the sanitary towel with the large size is hot and has peculiar smell when being used in summer; the diameter of the product is increased when the absorbent capacity of a single product is increased, for example, the diameter range of a single tampon is about 10-20 mm, the corresponding fluid absorbent capacity is about 6-15 ml, the diameter of the cup opening of a menstrual cup is about 35-45 mm, and the corresponding capacity of the menstrual cup is about 15-30 ml. The advantage of the increase of the absorption capacity or the capacity is that the change interval of single products is prolonged, the desire of female users for long using time and low change frequency of the product is met, but the operation difficulty of the sanitary product when the sanitary product is placed into the vagina after the diameter is increased, the discomfort in the body is increased, particularly, the menstrual cup is easy to be inserted into the vagina only after the cup body is folded, and the cup body can be restored into the original cup shape in the vaginal cavity only by having enough thickness and elasticity, so the elastic cup body with the caliber of 35-45 mm can generate oppression to the bladder and the rectum in the vaginal cavity, and the large-size menstrual cup and the obvious foreign body feeling are the main reasons that many women are unwilling to use. The mushroom type sanitary products have the problem of increasing the capacity and increasing the size, the mushroom type sanitary products which can contain 10 ml of liquid have the head diameter of 25 mm and the containing cavity diameter of 16 mm, the mushroom head diameter which can contain 15 ml of liquid is 29 mm and the containing cavity diameter is 20 mm, and the caliber of an auxiliary push tube for placing the products into the vagina is increased. In summary, two main requirements of a user for the hygienic product, namely 'comfortable use' and 'large absorption capacity', cannot be met by the conventional menstrual hygienic product and the technical scheme at the same time.

In addition, when the mushroom-type product is used, if only a small amount of fluid (1-2 ml) enters the front part of the accommodating cavity of the container, the water absorbing material absorbs the fluid and then expands, gel lumps are easily formed in the front part of the accommodating cavity, a head inlet passage is easily blocked, and then subsequent fluid is prevented or slowed from entering the bottom of the accommodating cavity, so that the absorption capacity of the product is reduced or the absorption speed of the fluid is reduced.

Moreover, after the mushroom-type product collects and contains fluid, the original air in the containing cavity can be discharged into the vaginal cavity, because the mushroom-type product seals the outlet at the lower part of the vaginal cavity like a plug, the discharged air can be retained at the upper part of the vaginal cavity to form a small air bag, and part of users can directly cause discomfort of intra-abdominal distension after using the product, when the air is too much, the discharged air of the product with larger size is more, and the discomfort of the intra-abdominal distension after using the product is more obvious.

The content of the water-absorbent resin in sanitary care products such as sanitary napkins and medical pads is considered to be, in chinese patent document "water-absorbent sheet structure" CN102686196B (2017-05-24): the total content is required to be 10 g/m or more from the viewpoint of exhibiting sufficient liquid absorption performance of the water-absorbent sheet structure, particularly, suppressing rewet, and is required to be less than 100 g/m from the viewpoint of suppressing occurrence of gel blocking phenomenon, exhibiting liquid diffusion performance of the water-absorbent sheet structure, and further improving liquid permeation rate.

Disclosure of Invention

Technical problem

The technical problem to be solved by the invention is as follows: under the prerequisite that does not increase the overall dimension that the container was made, showing the fluid collection memory space that increases the container, improving the absorption efficiency of fluid simultaneously, or on the contrary, under the prerequisite that the fluid collection memory space equals, reducing the overall dimension of container, showing improvement container use comfort level to under these containers received the extrusion condition, the difficult reverse osmosis of fluid of collecting in the container and storing spills over.

Solution scheme

The invention discloses a container for collecting and storing fluid, which comprises a coat and an absorber, wherein the top end of the head part of the coat is provided with an opening, the fluid can enter an accommodating cavity of the coat through the opening, and the absorber is filled in the accommodating cavity of the coat, and the container is characterized in that: the cavity wall of the outer sleeve containing cavity is provided with a fold structure, and the volume of the absorber can expand and enlarge the containing cavity after absorbing fluid.

Preferably, the cavity wall material of the containing cavity is flexible material and the folding of gathering by the cavity wall forms fold structure.

Preferably, the material of the cavity wall of the accommodating cavity is a high-elasticity material, and the fold structure is formed by the thickness change of the cavity wall.

Preferably, the absorber adjusts the saturated absorption amount of the absorber and the saturated volume of the container by changing the distribution ratio.

Preferably, the ratio of the approach line of the cavity wall fold to the radius of the envelope is reduced, and the ratio of the ultimate volume to the base volume of the container is increased.

Preferably, the number of folding ridges of the chamber wall is increased, increasing the ratio of the ultimate volume to the base volume of the container.

Preferably, the complexity of the way the walls are folded is increased, increasing the ratio of the ultimate volume to the basic volume of the container.

Preferably, the thickened portion of the wall of the receiving chamber forms a reinforcing rib.

Preferably, after the outer sleeve is emptied of the fluid-absorbed absorbent body, the walls of the containment chamber can be returned to the original folded state and the absorbent body can be refilled, enabling the container to be reused.

Preferably, the absorbent body has a water retention (lock) amount of physiological saline of more than 5 g.

Preferably, the absorber is a strip-shaped or sheet-shaped absorber profile.

Preferably, the absorbent body profile is provided with indicia.

Advantageous effects of the invention

The container can be applied to physiological period health care or body fluid detection sample collection, and as the cavity wall of the accommodating cavity is folded inwards, and the diameter of the outer envelope line of the cross section of the folded cavity wall is obviously reduced, the container can be easily placed into the small-caliber auxiliary push tube and placed into the vaginal cavity by virtue of the push tube, so that the discomfort of a user can be reduced to the minimum degree. And the absorber expands the wall of the corrugated cavity by volume after absorbing fluid, the expanding absorber expands the wall of the corrugated cavity, the absorber can finally expand the accommodating cavity into a nearly cylindrical body as the fluid continuously flows into the accommodating cavity and is absorbed by the absorber, and the limit volume of the accommodating cavity (the volume of the accommodating cavity when the wall of the cavity expands to the maximum limit) is expanded by a plurality of times compared with the basic volume (the volume of the cylinder with the same diameter as the envelope curve of the cross section of the wall of the cavity when the fluid is not absorbed).

The volume of the accommodating cavity of the invention is gradually increased along with the increase of the fluid absorption capacity and the expansion of the wall of the folded cavity, the volume self-adaptive (self-adaptive) characteristic of the container for automatically adjusting the volume of the container according to the flow is particularly suitable for users with uncertain menstrual discharge time and irregular menstrual flow: the user can put the container into the vaginal cavity hours or even a day in advance, the cavity wall keeps a wrinkled state when menses are not absorbed, the container is small and soft, so the user hardly feels the existence of the container (the pressure of the menstrual cup in the body is avoided), the user can not feel any discomfort when sitting or lying, then the absorber in the containing cavity gradually expands and becomes larger as secretion, menses and other fluids continuously flow into the containing cavity, the volume of the containing cavity gradually increases along with the increase of the inflowing fluid amount, the occurrence time of the discomfort of the container is delayed to the maximum extent, and at the moment, if the body feels that the volume of the container expands and the weight of the container increases, or the user feels that 'foreign bodies' in the body become hard, the user can be reminded to take out or replace new hygienic products in time. Therefore, compared with the mandatory limit of the ' 8-hour placement time ' of the tampon product, the container can be placed for a longer time, a user does not need to worry about the risk of the toxic shock syndrome, and the user can judge the time for replacing the sanitary product according to the ' foreign body sensation ' more easily, so that the anxiety of the user about worrying about the delay of replacement and causing health problems ' is eliminated.

After the absorber absorbs the fluid inflation, hold the chamber wall and expand gradually, the product comfort level can change, and further, to the difference of the comfortable sensitive degree of user, through the composition ratio that changes the absorber material, realize that the absorber has different absorptivity or inflation rate: for users with small amount of menstrual blood and sensitive comfort, the absorbing material with low absorption capacity or low expansion rate can be adopted, when the filled absorber reaches absorption saturation, the wall of the accommodating cavity is slightly expanded or is not expanded to a medium degree, and the volume of the container is called saturated volume; for those users who have a high menstrual flow and are not sensitive to product comfort (e.g. women who have a natural birth through the birth canal), the maximum expansion of the container cavity wall and the ultimate volume of the container cavity can be achieved by using an absorbent material with a high absorption capacity and a high expansion rate. The measure of realizing the adjustability of the saturated capacity of the container by changing the component proportion of the absorber can ensure that the container (taking 35 ml limit volume as an example) with the same size and specification has multi-level saturated capacity (such as 10 ml, 15 ml, 20 ml, 25 ml, 30 ml, 35 ml and the like) to meet different user requirements with wide menstrual blood flow range and large somatosensory adaptation difference.

When the container is applied to the sanitary nursing in the physiological period, the jacket is preferably made of medical materials, so that the container is safe and non-irritant to a human body, cannot actively absorb moisture of vaginal mucosa, cannot damage the moisture balance in the vagina and cannot damage the weak acid environment in the vagina, and after the absorber filled in the container absorbs fluid, the water can be locked even under the condition of body extrusion, secretions, menstrual blood and the like stored in the container are not easy to reverse seep and return to the vaginal cavity, so that a plurality of gynecological health hidden dangers such as 'pathogenic pathogen breeding' and 'endometriosis' are eliminated, and the safety performance of the container in long-term use is superior to that of a tampon and a menstrual cup.

The flow guide grooves leading from the head to the bottom of the accommodating cavity are formed in the container cavity wall in a folded state, the flow guide grooves distributed in a surrounding mode are beneficial to enabling fluid to flow to the bottom of the accommodating cavity, the absorber can uniformly contact the fluid from the head to the bottom, all parts of the absorber can uniformly absorb and expand, the gel blocking phenomenon of the water-absorbent resin is well inhibited, the fluid absorption speed and the fluid absorption capacity are increased, meanwhile, air in the accommodating cavity is discharged from the flow guide grooves, and the fluid replaces the air to enter the bottom of the accommodating cavity. In the whole absorption and expansion process, the diversion groove is always reserved between the absorber and the cavity wall, so that fluid smoothly and evenly flows into the accommodating cavity until the absorber expands to finally be completely attached to the expanded cavity wall or expand to reach the limit volume.

Before fluid is not absorbed, the internal space contained by the folded cavity wall of the container is obviously reduced relative to the basic volume, and the air quantity contained in the container after the absorber is deducted is also greatly reduced, so that after the container is placed in a vaginal cavity to absorb the fluid, a small amount of stagnant air is discharged into the vaginal cavity, and the influence of discomfort of a human body caused by the discharged air is reduced.

After the used container of the invention is cleaned of the absorber which has absorbed the fluid in the containing cavity and the jacket is thoroughly cleaned and strictly disinfected, the appropriate absorber can be refilled to realize the secondary utilization of the container jacket, and the reduction of the amount of waste is economical and beneficial to environmental protection.

Before describing the embodiments, the term "fluid" refers to a flowable substance, and the fluid is a generic term for liquid and gas, and the menstrual fluid often contains exfoliated endometrium fragments, and the menstrual blood containing fine solid fragments can be treated as a fluid. Although the embodiments of the present invention have been described with reference to liquid substances such as secretions and menstrual blood, and absorbent materials capable of absorbing moisture, the scope of the present invention is not intended to be limited thereto, and other embodiments with adaptive capacity obtained by materials involved in fluid collection and storage and fluid expansion absorption, which are not inventive by the skilled person, are within the scope of the present invention.

Drawings

The following drawings illustrate only some embodiments of the invention and are therefore not to be considered limiting of its scope;

FIG. 1 is a basic configuration and a constructional exploded view of a container (chamber wall folded type) according to the invention;

FIG. 2 is a basic pattern and cross-sectional view of a cavity wall fold configuration;

FIG. 3 is a basic operation principle demonstration of the folding structure of the container of the present invention;

FIG. 4 illustrates various positional variations of the ridges of the folded cavity walls;

FIG. 5 shows the folding structure of the cavity wall with different ratio of the approach line to the envelope radius and the same number of ridges;

FIG. 6 shows the folding structure of the chamber wall with the same ratio of the approach line to the envelope radius and different numbers of ridges;

FIG. 7 is a view of the folded configuration of the centrosymmetric geometry and the corrugated cell walls and absorber profile;

FIG. 8 shows a snowflake, fishbone, propeller-like fold structure and corrugated chamber walls and absorber profiles;

FIG. 9 measures to increase the complexity of the cavity wall folding structure;

FIG. 10 is a perspective and sectional view of the "clover" folded configuration container and mushroom type container;

FIG. 11 is a wall of a corrugated chamber in the form of a spiral twist;

FIG. 12 is a basic configuration and working principle demonstration of a container with a corrugated cavity wall formed by thickness change;

figure 13 creases, graduations, water drop markings on the absorbent body profile.

Detailed Description

The structural components and material materials of the embodiments of the invention described herein and shown in the drawings may be designed in various different configurations, i.e., the technical features of the embodiments of the invention may be combined with each other without conflict. The following detailed description of the embodiments of the invention, therefore, is not intended to limit the scope of the invention as claimed, but is merely representative of some (but not all) preferred embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that, in the description of the embodiments and implementations of the present invention, the term "basic volume" refers to "a volume of a cylinder having a diameter equal to an envelope of a cross section of a cavity wall and a height equal to a height of a housing cavity in a condition that the cavity wall of the container is not expanded", the term "saturation volume" refers to "a volume of the housing cavity when an absorber has reached an absorption saturation state and the expansion of the cavity wall of the container is stopped", and the term "limit volume" refers to "a volume of the housing cavity when the cavity wall of the container is expanded to a maximum limit". For a container with a cylindrical accommodating cavity, such as a scheme related to the built-in type menstrual sanitary product CN208726050U (2019-04-12), the basic volume, the saturated volume and the ultimate volume can be considered to be basically consistent (ignoring the wall thickness and the material expansion and contraction), while the wall of the container provided by the invention has a corrugated structure, the ultimate volume is larger than the basic volume, and the saturated volume is smaller than or equal to the ultimate volume.

Before beginning to describe embodiments of the present invention, a preliminary understanding of the characteristics of the female reproductive system will be helpful in understanding the present invention's technical solutions and embodiments: the vagina is a channel for female menstrual blood discharge and fetal delivery, the vagina is a muscular cavity organ consisting of mucosa, a muscular layer and an outer membrane, and the cavity tube has the length of about 110 mm and the diameter of about 25 mm; women of childbearing age have menstrual blood formed by shedding of endometrium and bleeding each month and then are discharged through the vagina. The time, frequency and flow of menstrual blood discharge vary from person to person, and a female of child-bearing age with a healthy body and a moderate weight can discharge 20-60 ml of menstrual blood in average in each menstrual cycle, but some people have more menstrual blood and less menstrual blood, and even if the same person is caused by the change of the physical health condition, the menstrual blood discharge time and frequency are regular sometimes and may be advanced or delayed for several days sometimes. Due to the physiological conditions of the female body, the flow of menstrual blood and the comfort requirements of the user, the size range of the built-in sanitary product is necessarily limited, and the limited size range limits the upper limit of the absorption capacity of the product. If the sanitary article in menstrual period has larger absorption amount, long placing time, less replacement times per day, comfortable body feeling and easy operation, the basic sanitary requirement and comfortable and good experience of most menstrual women can be certainly met.

When the container is applied to the field of menstrual hygiene care, the jacket is preferably made of medical materials safe to the human body, such as silicon rubber, natural latex rubber or plastics and the like, the head of the container is in a mushroom-shaped structure and has enough thickness and elasticity, the opening at the top can be kept smooth under the condition of being extruded by internal organs of the body, meanwhile, the mushroom-shaped structure is beneficial to embedding the protruding edge of the head into the folds of vaginal mucosa, the container is ensured to be anchored in the vaginal cavity and cannot move up and down, and the head can also prevent menstrual blood from leaking from the side like a plug; based on the fact that the average diameter of a cavity tube of a human body vaginal cavity is about 25 mm, the container is used as an article placed in the vaginal cavity, the diameter of the head of the container is not more than 30 mm, preferably 20-25 mm, the thickness of the cavity wall of a containing cavity of the container is less than 1 mm, preferably the wall thickness is less than 0.5 mm, the original shape structure of the cavity wall can be kept under the condition of no external force extrusion, and the container is easy to expand and extend to the periphery when being expanded and extruded by an internal absorber.

When the container is applied to the field of menstrual hygiene care, the absorber is preferably a mixture consisting of macromolecular water-absorbent resin and hydrophilic fibers, the mixture has high water absorption and strong water locking capacity, the macromolecular water-absorbent resin is a synthetic resin which contains macromolecules with hydrophilic groups and a cross-linked structure, can absorb a large amount of water and swell, can keep the water under pressure and does not flow out, can generally absorb pure water which is more than 100 times of the volume of the resin, can reach 1000 times at most, and is a common water-absorbent material for producing paper diapers, sanitary napkins and medical mattresses. The absorbent adopted in the invention forms solid gel after absorbing moisture, can still keep moisture without separating out under certain pressure, can lock moisture and store the moisture in the containing cavity, and the volume is expanded continuously along with the increase of the absorbed moisture content, and the wall of the folding cavity is expanded to expand, so that the volume of the containing cavity is increased continuously.

The basic construction of the container (chamber wall folding type) of the invention is shown in a drawing in fig. 1, and b drawing in fig. 1 is a structural exploded view of the container. The basic structure of the container comprises a head part 1, a containing cavity 2 and a tail part 3 of the container, wherein the top end of the head part 1 is provided with an opening 4 communicated with the containing cavity 2, and the containing cavity 2 is filled with an absorber 7 for absorbing fluid. The container can be made of flexible materials, the thin flexible materials are easy to fold, soft and easy to deform, and the user feels comfortable when using the container. The container head 1 of the present invention has a sufficient thickness to obtain a certain elasticity, is less deformed and easily restored under the squeezing of the internal organs of the body, can keep the opening 4 of the top portion free, and can prevent the leakage of menstrual blood from the side as a plug.

The basic mode of the folding structure of the cavity wall of the accommodating cavity 2 of the container is shown in figure 2, and is seen from the internal view angle of the accommodating cavity 2: the part of the cavity wall which is folded and raised towards the direction close to the central axis 8 is a convex ridge 5, and the part between two adjacent convex ridges 5 is a groove 6. In fig. 2 the receiving chamber 2 is shown in cross-section a-a, with the dotted circle with its centre on the central axis 8 of the container and tangent to the ridge 5 closest to the central axis 8 being the approach line 9, the dotted circle with its centre on the central axis 8 of the container and tangent to the outermost part of the chamber wall being the envelope 10, the folded chamber wall being located between the envelopes of the approach line 9 and the envelope 10, the central space enclosed by the approach line 9 being generally filled with an absorbent body. In fig. 2 the four ridges 5 of the corrugated chamber wall are all tangent to the approach line 9, i.e. the four ridges 5 of the chamber wall have the same elevation. It should be noted that although the receiving chamber 2 in the drawings and the description of the embodiments of the present invention is basically a "straight tube structure" with a uniform thickness from the head to the tail, other tubular structures like "thick at one end and thin at one end", "thick at the middle between two ends" and the like also belong to the protection scope of the present invention.

Fig. 3 illustrates the basic operation of the container (folded cavity wall type) according to the present invention, as shown in fig. 3-a, the absorbent body 7 filled in the container cavity 2 has not absorbed the fluid, the cavity wall of the container cavity 2 maintains the original folded state, and the envelope 10 has a smaller radius as seen in the cross-sectional view a-a, since the cavity wall of the container cavity 2 is folded toward the center, a plurality of guide grooves 6 are formed around the absorbent body 7, and the inner area surrounded by the cavity wall is significantly reduced relative to the area surrounded by the envelope 10. When the invention is applied to menstrual period sanitary products, the accommodating cavity 2 in the original fold state is small and soft, the surrounding groove 6 can play a role of air cushion, the container is placed in the vaginal cavity without hard foreign body feeling, and the container can be placed for a long time without influencing daily activities. As shown in fig. 3-B, when the absorbent body 7 absorbs the fluid and expands, and is pressed by the expansion force of the absorbent body 7, the folded cavity wall of the containing cavity 2 gradually extends and expands to the periphery, as seen from the cross-sectional view B-B, the volume of the absorbent body 7 increases and expands the folded cavity wall, the height of the ridge 5 decreases, the groove 6 widens and becomes shallow, the diameter of the envelope 10 significantly increases, the internal area enclosed by the cavity wall of the containing cavity 2 significantly increases, the volume of the containing cavity 2 increases as a result of the increase of the fluid flow, and if the absorbent body 7 reaches the absorption saturation state at this time and does not continue to absorb the fluid expansion, the volume of the containing cavity 2 at this time is the saturation volume of the container. If the absorbent body 7 continues to absorb fluid and expand, as shown in fig. 3-c, and eventually the folded cavity walls expand to be fully expanded, i.e. the ridges 5 and grooves 6 disappear, the absorbent body 7 abuts against the cavity walls, and the diameter of the envelope 10 expands to the maximum, at which point the volume of the receiving cavity 2 is the limit volume of the container.

Fig. 4 shows the various position changes that can be implemented for the ridges 5 of the corrugated chamber wall, fig. 4-a shows a structure of four ridges 5 with the same ridge height and the same ridge-to-ridge distance (90 ° distance) of the ridges 5, the ridge-to-ridge distance reflecting the width of the groove 6, fig. 4-b shows a structure of four ridges 5 with different ridge heights but the same ridge-to-ridge distance (90 ° distance), and fig. 4-c shows a structure of four ridges 5 with the same ridge height but different ridge-to-ridge distance. Generally speaking, the corrugated cavity wall ridge 5 has the advantages of uniform ridge height and ridge-to-ridge angular distance: the absorber can be supported and fixed at the central position of the accommodating cavity, the extrusion force of the expansion of the absorber can be balanced, and the balance (the width and the depth are consistent) of the flowing space of the peripheral diversion grooves is ensured. In the description of the embodiments of the present invention, the embodiments of the corrugated cavity wall with the same ridge height and the same ridge-to-ridge angular distance of the ridges 5 are mainly used, but based on these embodiments, other embodiments obtained by changing or adjusting the positions of the ridges 5 by those skilled in the art are within the protection scope of the present invention.

The envelope curves 10 of the corrugated chamber walls of the three container receiving chambers 2 in fig. 5 are of equal radius, all have four ridges 5, and the receiving chambers 2 are of the same length. Here the ratio of the radii of the approach line 9 and the envelope line 10 reflects the amplitude of the ridge 5 bulging or the depth of the cavity wall folding inwards. When viewed from the cross section of the corrugated cavity wall, the ratio of the radius of the approach line 9 to the radius of the envelope line 10 in fig. a is 0.75, the ratio of the perimeter of the cavity wall section (the cavity wall is shown by a thick solid line in the figure, and the thickness of the cavity wall is ignored) to the perimeter of the envelope line 10 is about 1.10, and the expansion ratio of the limit volume of the container to the basic volume is about 1.21; in the graph b, the ratio of the radius of an approach line 9 to the radius of an envelope line 10 is 0.50, the ratio of the section perimeter of the cavity wall to the perimeter of the envelope line 10 is about 1.40, and the expansion ratio of the limit volume of the container to the basic volume is about 1.96; in the graph c, the ratio of the radius of the approach line 9 to the radius of the envelope line 10 is 0.25, the ratio of the perimeter of the cross section of the cavity wall to the perimeter of the envelope line is about 1.80, and the expansion ratio of the limit volume of the container to the basic volume is about 3.24. It can be seen that, under the condition that the envelope radius 10 is equal and the number of the ridges 5 is equal, the smaller the radius ratio of the approach line 9 to the envelope 10, the larger the expansion rate of the limit volume of the container relative to the basic volume, that is, the smaller the radius ratio of the approach line 9 to the envelope 10, the more the capacity of the container to absorb and store the fluid can be significantly increased.

In fig. 6, the ratio of the radius of the approach line 9 of the corrugated cavity wall of the three container accommodating cavities 2 to the radius of the envelope line 10 is equal (the ratio of the three shown in the figure is 0.50), and the lengths of the accommodating cavities 2 are the same, but the number of the ridges 5 is different. In fig. a, the cavity wall ridges 5 are 3, the ratio of the perimeter of the cavity wall section (shown by a thick solid line in the figure and ignoring the thickness of the cavity wall) to the perimeter of the envelope line 10 is about 1.25, and the expansion ratio of the limit volume of the container to the basic volume is about 1.56; in fig. b, the cavity wall ridges 5 are 4, the ratio of the cavity wall section perimeter to the envelope line 10 perimeter is about 1.40, and the expansion ratio of the limit volume to the basic volume of the container is about 1.96; in fig. c, there are 6 ridges 5 on the chamber wall, the ratio of the perimeter of the cross-section of the chamber wall to the perimeter of the envelope 10 is about 1.57, and the expansion ratio of the ultimate volume to the fundamental volume of the container is about 2.46. Therefore, under the condition that the ratio of the radii of the approach line 9 and the envelope line 10 is equal, the expansion ratio of the limit volume of the container to the basic volume can be increased by increasing the number of the cavity wall ridges 5.

Fig. 7 shows three folding structures with centrosymmetric geometric profiles, corrugated cavity walls and absorbers 7, wherein the ratio of the approximate line radius of the corrugated cavity walls to the envelope radius 10 is equal, the number of the convex ridges 5 is 6, the lengths of the accommodating cavities 2 are the same, and the absorbers 7 are all cylinders. Comparing the "starlight" folded configuration of fig. 7-a to the "splash" folded configuration of fig. 7-c, the "starlight" configuration has a container limit volume expansion ratio of about 2.56 times the base volume expansion ratio, while the "splash" configuration has an expansion ratio of about 5 times. Under the conditions that the ratio of the radii of the approach line and the envelope line is equal and the number of ridges is the same, the complexity of the folding mode of the cavity wall is increased, for example, a C-shaped arc corner is used for replacing a V-shaped folding angle, and an S-shaped curve is used for replacing a short straight line between the folding angles (see fig. 9), so that the expansion rate of the limit volume of the container relative to the basic volume can be obviously increased.

In addition to the central symmetrical geometry of the folded structure, fig. 8 shows a snowflake-like, fishbone-like, propeller-like folded structure and corrugated chamber walls, as well as an absorbent body 7 which is in the shape of a hexagonal prism, a thin sheet, a cylinder each. Comparing the ' starlight ' folding structure in fig. 7-a with the ' snowflake ' folding structure in fig. 8-a, the short straight connecting lines between the folding angles are folded again to form a plurality of ' small branches ', and the snowflake ' folding structure can improve the expansion ratio of the limit volume relative to the basic volume by more than 6 times by increasing the plurality of ' small branches '. Even if the folding structure of the wall of the accommodating cavity is simple, but the wall with a smooth surface is subjected to W-shaped or bow-shaped micro-folding treatment, as shown in FIG. 9, the expansion ratio of the limit volume to the basic volume can be increased remarkably. The complexity of the cavity wall folding mode is increased, the expansion multiplying power of the relative basic volume of the limit volume can be obviously improved, certainly, the limit volume is not larger and better, the proper folding structure is selected, the limit volume size (the diameter when the accommodating cavity is expanded to the limit) meets the requirements of use scenes and comfort level, the economic requirements of die processing cost, production period and the like are considered in the complexity of the folding structure, and the absorption expansion multiplying power of the absorber 7 is also considered.

Fig. 10 shows in parallel the shape of a container with a "clover" folded structure (fig. a, b) and a mushroom-type container (fig. c, d) representative of the solution of CN208726050U (2019-04-12) in the patent document "built-in type catamenial sanitary article" (no absorbent body) and its containing cavity in cross section (not included). The diameters of the heads of the two containers are 25 mm, the envelope line diameter of the accommodating cavity is 16 mm, the length of the accommodating cavity is 50 mm, the basic volumes (the actual volumes of the mushroom containers) are 10 ml, and the air volume of the clover container is only less than 5 ml. The expanded envelope diameter of the cavity wall of the clover container is about 22.5 mm when the saturation volume of the clover container is 20 ml, the limit volume of the clover container is 30 ml and the limit volume envelope diameter is 27 mm, the limit volume of the clover container is 3 times of the actual volume of the mushroom container and is equivalent to the volume of a menstrual cup, and the diameter of the container is only half or more of the diameter of the menstrual cup.

If the limiting volume of the clover container is limited to 15 ml and the length of the containing cavity is still 50 mm, the diameter of the head of the container can be reduced to 20 mm, the envelope diameter of the containing cavity is 11.5 mm, the basic volume is about 5.2 ml, the envelope diameter of the expanded cavity wall is about 16 mm when the saturated volume is 10 ml, and the envelope diameter of the cavity wall is about 19.5 mm when the limiting volume is 15 ml. In contrast, a mushroom container with a capacity of 15 ml and a holding chamber length of 50 mm, with a head diameter of 29 mm and a holding chamber wall diameter of about 20 mm, was found to be able to absorb 15 ml of fluid as well, with a head diameter of the clover container reduced by 9 mm and an envelope diameter of the folded chamber wall (in its original unexpanded state) reduced by approximately 9 mm.

Unlike the previous embodiment of the "straight tube type" housing, fig. 11 shows a corrugated structure with walls folded spirally around the central axis of the container, which obtains an effect similar to the mutual engagement of the screw-in nut (vaginal cavity) of the bolt (housing wall), with the advantages compared to the previous straight tube type housing: the spiral fold structure increases the resistance of the cavity wall (container) to move up and down along the vaginal cavity, and prevents the container from sliding up and down in the vaginal cavity after the weight of the collected and stored fluid is increased.

Fig. 12 illustrates the formation of a corrugated structure by variation of the thickness of the chamber walls, which are made of a highly elastic material, such as a rubber material. The chamber wall of the receiving chamber 2 is smooth in appearance (fig. 12-a), whereas the thickened (raised) chamber wall forms a centrally directed ridge 5 inside the receiving chamber 2, as seen in the sectional view 12-b of the chamber wall of the receiving chamber 2. As can be seen from the sectional view 12-c of the wall of the receiving chamber 2, the absorbent body 7, after absorbing fluid, expands volumetrically against the ridges 5 and expands circumferentially, so that the thin wall of the chamber at the location of the grooves 6 between the ridges 5 is stretched transversely, as the rubber membrane is stretched after the balloon has been inflated, and the receiving chamber 2 bulges. Although unlike the previous embodiments, in which the folded cavity wall expands the internal volume by unfolding the folded structure, the high elasticity and easy stretch characteristics of rubber are related to its molecular structure, which is formed by many very thin and long molecular chains, usually, these molecular chains curl into irregular coils, and when stretched by an external force, the molecular chains stretch, and after the external force is removed, the molecular chains return to a curled and contracted state, so that the stretching and expanding of the cavity wall is actually the effect of unfolding the folded structure on the molecular scale of the material of the cavity wall. Due to the presence of the ridge 5, the surrounding groove 6 around the absorption body 7 (in particular the bottom spaces on both sides of the ridge 5) ensures that fluid can pass freely into the interior of the receiving chamber 2. More importantly, the convex ridge 5 from the head part to the bottom part forms a reinforcing rib with certain thickness and stretching resistance, fig. 12-D is a cavity wall 3D structure diagram drawn by cutting the middle section of the containing cavity, and the reinforcing rib has the functions of enhancing the stretching resistance of the cavity wall of the containing cavity along the axial direction and avoiding the containing cavity from expanding too long (more than 10%) along the axial direction, and the reinforcing rib is connected with the tail part, so that the containing cavity 2 is ensured to be prevented from being stretched too long (more than 10%) along the axial direction (like an elastic rubber belt) when the container is taken out. The container of the invention made of elastic material has the following advantages: the container is removed after the absorbent body is removed, and the walls of the containing cavity can restore the original folded state.

When the container of the present invention is used in the field of menstrual hygiene care, the absorbent member 7 is preferably a mixture of a high-molecular water-absorbent resin and hydrophilic fibers, which has a high water absorption rate and a strong water-holding capacity. For the industrially produced high molecular water-absorbent resin, the water absorption performance of the same batch of products can be obtained by laboratory detection, and the main detection data includes "how many grams of physiological saline (instead of menstrual blood test) can be absorbed by 1 gram of water-absorbent resin", and the data of the absorption rate of the physiological saline is slightly different due to different products, generally between 35 and 80 rates, that is, 35 to 80 grams of physiological saline can be absorbed by 1 gram of water-absorbent resin. By changing the component proportion of the absorber material, the maximum water absorption weight of the absorber can be increased by increasing the weight percentage of the high polymer water absorption resin in the absorber, and conversely, the maximum water absorption weight of the absorber can be reduced by reducing the weight percentage of the high polymer water absorption resin in the absorber, so that the saturated volume index of the container disclosed by the invention is adjusted.

The saturation volume of the container of the invention is adjustable, which can lead the container with the same structure size to have multi-level saturation volume under one limit volume: taking a container with a limit volume of 30 ml as an example, aiming at menses liquid with 10 ml, 15 ml, 20 ml, 25 ml and 30 ml of saturated absorption, 0.2 g, 0.3 g, 0.4 g, 0.5 g and 0.6 g of water-absorbing resin (calculated by 50 g/g of water-absorbing multiplying power) can be correspondingly added into the absorber, so as to produce the physiological period sanitary products with different specifications, and provide multi-body crowds and multi-scene applications of young women or born women, daily-use or night-use, cycling, swimming and body building and the like; if the ultimate volume after the size reduction of the container is 15 ml, 0.1 g, 0.2 g and 0.3 g of water-absorbent resin (calculated by 50 g/g water absorption capacity) can be correspondingly added into the absorber for saturated absorption of secretion or menstrual fluid of 5 ml, 10 ml and 15 ml.

The mixture composed of the high-molecular water-absorbing resin and the hydrophilic fiber can be pressed into absorber profiles such as prisms, cylinders or sheets, the mixture of the water-absorbing resin and the fiber has uniform appearance expansion after absorbing water, the absorber after absorbing water forms solid gel, has no fluidity, is not easy to overflow a container under the extrusion condition, and has strong water retention (water locking) capability. In addition to the above-described press-molded absorbent body, a powdery or granular absorbent material may be sealed in an interlayer of a water-permeable dust-free paper or nonwoven fabric sheet, or filled in a mesh of a bulky nonwoven fabric as a packaging sheet absorbent body. It is of course also possible to enclose the particulate absorbent material in a water (paper) permeable bag like a tea bag. Referring to patent document "water-absorbent sheet structure" CN102686196B, compared with a sheet absorber generally used for sanitary napkins, the content of water-absorbent resin in the sheet is 10 to 100 g/m, and the water retention (water locking) capacity of physiological saline is 35 to 80 g/g, while the wall of the corrugated cavity of the container of the present invention forms a surrounding flow guide channel around the absorber, which inhibits the occurrence of gel blocking phenomenon of water-absorbent resin, and significantly improves the fluid permeation rate, therefore, in order to ensure that the absorber has a significant swelling effect, the sheet absorber used in the present invention is required to have a water-absorbent resin content of more than 100 g/m, preferably a water-absorbent resin content of more than 200 g/m, and a water retention (water locking) capacity of more than 50 g/g. In summary, the absorbent body of the present invention has a water-absorbent resin content of more than 0.1 g, and the absorbent body has a water retention (water lock) amount of physiological saline of more than 5 g.

For the used container of the invention, the resilient containment chamber walls automatically recover the original pleated configuration after the absorbent body, which has been expanded by the absorbed fluid, has been completely removed. After thorough cleaning and rigorous disinfection of the emptied casing, the container can be refilled with a suitable absorbent body for re-use. According to fig. 13, in order to realize the advantage of adjustable saturated volume of the container of the present invention, and facilitate the user to select the absorption capacity himself, the absorber profile is marked with a marked cutting scale line 11 or a marked water drop 12, for example, the absorber 7 absorbing 10 ml is marked with a marked water drop 12 (as shown in fig. 13-a), the absorber 7 absorbing 20 ml is marked with two marked water drops 12 (as shown in fig. 13-b), the user is facilitated to select the absorber 7 according to the required absorption capacity, or for the absorber 7 absorbing ultra-large absorption capacity, as shown in fig. 13-c, the absorber 7 profile is marked with a scale line 11, the user is facilitated to cut the absorber 7 according to the scale line 11, for example, the absorber 7 absorbing 30 ml of fluid is marked with a scale line 11 and a marked water drop 12, and when the 10 ml capacity is required, a marked water drop 12 is cut, 2 water drops are cut to be marked by 12 when the capacity of 20 milliliters is needed, the cut absorber is directly filled in a container for reuse, or the absorber 7 with the folded paper shape and the crease 13 (or die-cut crease) marks is manufactured as shown in figure 13-d, so that a user can conveniently tear one (or two) pieces of absorbing paper along the crease 13 (or the die-cut crease) to be filled in the container at each time, and the content of the absorbing resin of the folded paper absorber is preferably more than 200 grams per square meter for ensuring the absorbing and expanding efficiency.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical solution of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiment of the present invention, for example, the corrugated chamber wall of the container of the present invention can have both the folding structure and the thickness structure: the folding cavity wall with high elasticity gradually opens the folding and unfolding cavity wall after the absorption body expands, and if the absorption body continues to expand after the folding structure is completely unfolded by the cavity wall, the cavity wall with high elasticity (the part with the smaller thickness) starts to stretch and extend to adapt to the volume of the absorption body which continues to expand. Any modification, equivalent replacement, modification or combination of changes and alterations made by those skilled in the art without any inventive step within the spirit and principle of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-adaptive fluid collection and storage container comprising a casing having an opening at a top end of a head portion thereof through which fluid can enter a receiving chamber of the casing, and an absorbent body filled in the receiving chamber of the casing, wherein: the cavity wall of the outer sleeve containing cavity is provided with a fold structure, and the volume of the absorber can expand and enlarge the containing cavity after absorbing fluid.

2. The adaptive-capacity fluid collection and storage container of claim 1, wherein: the wall material of the cavity is flexible and is gathered by the wall of the cavity and folded to form a fold structure.

3. The adaptive-capacity fluid collection and storage container of claim 1, wherein: the material of the cavity wall of the outer sleeve accommodating cavity is a high-elasticity material, and a fold structure is formed by the thickness change of the cavity wall.

4. The adaptive-capacity fluid collection and storage container of claim 1, wherein: the absorber adjusts the saturated absorption amount of the absorber and the saturated volume of the container by changing the distribution ratio.

5. The adaptive-capacity fluid collection and storage container of claim 2, wherein: the smaller the ratio of the approach line of the cavity wall fold to the radius of the envelope, the larger the ratio of the ultimate volume to the basic volume of the container.

6. The adaptive-capacity fluid collection and storage container of claim 2, wherein: the greater the number of folding ridges of the chamber wall, the greater the ratio of the ultimate volume to the base volume of the container.

7. The adaptive-capacity fluid collection and storage container of claim 2, wherein: the more complex the way the wall folds, the greater the ratio of the ultimate volume to the basic volume of the container.

8. A self-adaptive capacity fluid collection and storage container according to claim 3, wherein: the thickened part of the wall of the accommodating cavity forms a reinforcing rib.

9. The adaptive-capacity fluid collection and storage container of claim 1, wherein: after the outer sleeve empties the fluid-absorbed absorber, the cavity wall of the accommodating cavity can be restored to the initial folded state, and the absorber can be refilled, so that the container can be reused.

10. The adaptive-capacity fluid collection and storage container of claim 4, wherein: the water retention (water locking) amount of the normal saline of the absorber is more than 5 g.

11. The adaptive-capacity fluid collection and storage container of claim 1, wherein: the absorber is a strip-shaped or sheet-shaped absorber section.

12. The adaptive volume fluid collection and storage container of claim 11, wherein: the absorber profile is marked with indicia.