JPH03500611A - contraceptive cervical cap - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Contraceptive cervical cap Technical field The present invention covers a portion of the cervix to prevent the migration of sperm from the vagina to the cervix. With regard to devices for cap removal (or displacement), use a particularly cervical grip. A suitable raised section (ridg) for blocking (or increasing the stability of the cap) The present invention relates to a cervical cap having a cervix cap.

Background technology Cervical canal to prevent pregnancy by blocking the migration of sperm from the vagina to the cervix. Cervical caps designed to cover the area of the cervix are known. But it takes The known caps had several drawbacks and deficiencies.

Known cervical caps pose medical problems for users, such as abnormal cramps. (cramp) + abnormal bleeding, abnormal discharge from the uterus (discharge) and mucosal erythema. moreover, Known caps, due to their size and shape, pose a problem to users and their partners. It was very uncomfortable.

Other problems with traditional cervical caps include leakage from the cervix. There is a frequency of vibration that causes disconnection. These caps are rim When pressed gently, the groin rotates on the cervical canal or slides on the cervical surface. Out of place If this happens, not only will discomfort increase, but the true eye behind the use of the cervical cap This would defeat the purpose. The dislodgement allows sperm to migrate to the cervix, resulting in pregnancy. This is because it causes

Therefore, it is important to ensure a secure fit to the neck and to avoid any problems related to the medical problems mentioned above. Attempts have been made to design a secure cervical cap that avoids inconvenience and discomfort. ing. Such attempts have been made in various ways. For example, a spring mechanism inside a wall There are things that are designed to have. Also, for adhering the cap to the cervical canal. Some are provided with an adhesive (see, for example, U.S. Pat. No. 3,952,737).

Furthermore, some have protrusions on the inner surface. However, with these caps Not only cannot the above-mentioned problems be solved, but other problems also occur. For example, No. 3,952,737 is an O-ring.

Notch, internal bead and internal sealing ring Discloses a cervical cap adapted to be retained in the cervical canal by a ring. This outfit Attempts have been made to solve the problem of dislodgement, but due to its complexity, manufacturing This increased cost and made it difficult to use. Insert using applicator. After inserting the cap into the cervical canal and positioning the cap, control the O-ring from the bottom position to the top position. This is because it is something that must be done.

Cervical caps must be comfortable (and reliable) for contraceptive use. be. Additionally, such non-offensive and secure caps are easy to use and It must not be very expensive and must not have an adverse effect on the health of the user.

Disclosure of invention The present invention seeks to obviate the above-mentioned problems and drawbacks of the prior art. .

The present invention includes a cap having an inner and outer surface and an open end to cover a portion of the cervical canal. Provide a covering device. Its inner surface has a raised section adjacent the open end . Raised section grips the cervical canal when the cap is placed over the cervical area suitable for doing so. The raised section has first and second raised portions; These project inwardly from the inner surface of the cap. Opening end and first protrusion The distance between the opening end and the second protrusion is smaller than the distance between the opening end and the second protrusion.

Additionally, in one embodiment, the first and second ridges are generally annular and approximately one to the other. They are arranged in a nearly parallel relationship. Preferably, the first ridge is shaped into the rim of the cap. will be accomplished. The inner diameter of the raised section in the first raised portion is the same as that of the raised section in the second raised portion. Approximately equal to the inner diameter of the section. The cap further includes the first and second ridges and approximately a third annular ridge disposed between the first and second ridges in a parallel relationship; You can leave it there. The cap preferably has a rounded edge area at the open end. has.

The cap has a rim section of reduced diameter relative to the diameter of the raised section. You may do so. Alternatively, a rim separator with an enlarged diameter relative to the diameter of the raised section may be used. It may also have a function. Tape the area of the cap adjacent to the raised section. The inner diameter of the area may be smaller than the inner diameter of the raised section. good. The raised section of the cap is also tapered so that the distance between the inner and outer surfaces is greater than the first ridge. The starting portion may be larger than the second raised portion.

In other embodiments of the invention, the first and second ridges of the cap are connected and continuous. The inner diameter of the cap is approximately the same in the raised section. It is designed to be constant or gradually decrease as it moves away from the open end. Preferably, The first ridge is formed on the rim of the cap. The cap is rounded at the open end. It may have a sharp edge area. or extending outwardly from the open end. A protrusion, such as a flange, may be formed on the rim of the cap. cap bulge The section is tapered such that the distance between the inner and outer surfaces is greater than the first ridge and the second ridge. It may be made larger.

The cap further has a dome shape, preferably of uniform thickness, opposite the open end. It may also have a shaped part. Its dome shaped part is properly sealed and raised It has an inner diameter that gradually increases toward the section.

Brief description of the drawing Various objects, features and attendant effects of the present invention will be described below with reference to the accompanying drawings. By considering the detailed description of the invention, it will be better understood and fully appreciated. will be recognized. Here, FIG. 1 is a sectional view for explaining a preferred embodiment of the cervical cap of the present invention; FIG. 2 is a sectional view of another embodiment of the cervical cap of the present invention; FIG. 3 is a sectional view of still another embodiment of the cervical cap of the present invention; FIG. 4 is a cross-sectional view of a further embodiment of the cervical cap.

BEST MODE FOR CARRYING OUT THE INVENTION Some embodiments of the invention are shown in longitudinal section.

In other words, the cap should be dome-shaped or have its axis of rotation within the plane of the drawing. is bell-shaped. Similar reference numbers preceded by respective drawing numbers refer to them. Corresponding parts are shown in each figure. Therefore, the cervical cap of the present invention , reference number 10 in FIG. 1, 20 in FIG. 2, 30 in FIG. 3, 40 in FIG. are shown respectively. The cervical cap is preferably made of natural or synthetic rubber. It is inserted and covers the virginal portion of the cervix. . It is also designed to prevent sperm from penetrating during normal use, allowing sperm to enter the cervix. This prevents pregnancy from occurring.

In the embodiment shown in FIG. 1, the cervical cap lO has an outer surface 100 and an inner surface. It has a surface 110. The cervical cap lO includes a dome part 120, a rim 130 and and an aperture 140. The opening 140 is delimited by the rim 130. It is located so as to face the dome part 120, and is located at the knee part of the cervix. It is large enough to cover the entire area. Rim 130 is the terminal end of cap 10 It has a rounded edge apex 132 located in an opening 140 forming a shape.

The dome portion 120 is generally hemispherical and is preferably used to form a dome. It has a uniform thickness of about 0.8 mm to about 1 mm depending on the material used. Dome 12 0 is properly sealed and effectively prevents sperm migration into the cervix. Dome part 1 20 is tapered, so the inner diameter of the cap IO is directed toward the tip 122 of the dome. It decreases accordingly. In a suitable and convenient form, also by women. Cervical canal changes in range and can also change in women who have given birth. Depending on the size, the inner diameter Dl of the maximum cross section of the dome portion 120 of the cap 10 is approximately 19 It can be varied in the range from mm to about 32 mm. This allows small It is easy to use, does not cause any discomfort during use, and is highly reliable. A cervical cap is provided.

The rim 130 has a circumferential raised section 1 between the top portion 132 and the dome portion 120. 50. Section 150 includes a plurality of ridges on its interior surface. Elevated center The function 150 effectively fixes the cap 10 to the cervical canal. Not only does it exert pressure on the uterine cervix, but it also functions to gently press down on the surface of the cervix.

This uniquely shaped raised section 150 is airtight and virtually liquid-tight. This helps to ensure a proper fit and also prevents the cap from coming off and the possibility of pregnancy. prevent increase in potential. Spermicide preferably in gelatin, cream or foam form. When the child drug is used in the space defined by the dome part 120, more reliable contraception is required. be done.

FIG. 1 shows an embodiment of a cervical cap IO of the present invention having a raised section 150. , the raised section 150 includes three annular ridges 152, 154 and and 156. These three annular ridges 152, 154 and 156 are suitable are arranged parallel to each other, and the outer ridges 152 form one part of the rim 130 of the cap 10. form a section. A space or recess 153 is formed between the outer ridge 152 and the central ridge 154. A space or recess 155 is formed between the central ridge 154 and the inner ridge 156. formed between. The three ridges 152, 154 and 156 are preferably of equal width. Alternatively, the thickness Wl is such that the thickness between the inner surface 110 and the outer surface 100 is The distances at ridges 152, 154 and 156, respectively, will be approximately equal. suitable fruit In the example, Wl is approximately 4 mm. Further, preferably, each recess 153 and 155 has a depth of approximately 1.5 mm. The outer diameter E1 of the rim portion 130 is preferably It will be about 28mm to 40mm.

It is clear that a suitable range of cap sizes is provided. Cap diameter The cap 10 can be effectively attached to the neck of the individual wearer by selecting the values of the height and the bulge. Can be fixed.

Finally, the cap 10 shown in FIG. Along portion 132, it tapers slightly inward.

The specifications of the cervical cap shown in Figure 2 are mainly in the bulge section. Different from what is shown in the figure. In the embodiment of FIG. 2, the raised area 250 corresponds to It is thicker than the raised region 150 of FIG. That is, the thickness W2 of the region 250 is equal to Wl. It's big. Portion 202 connects rim region 234 and dome region 220 and is shown in FIG. has a longer sloped portion than the corresponding portion 102 of. The outer diameter E2 of the rim 230 is It will be about 32 mm to 44 mm. Preferably, the thickness of the raised region 250 or The width W2 is from the outer ridge 252 to the inner ridge 256 as shown in FIG. This allows the desired combination of stiffness and flexibility to be achieved.

Figure 3 shows a cervical cap with parallel annular ridges to hold the cervix in place. In addition, other examples will be shown.

Cap 30 has a raised section 350 with an outer ridge. A raised ridge 352, a medial ridge 354 and an inner ridge 356 are included. The recess 353 is on the outside The recess 355 is formed between the ridge 352 and the intermediate ridge 354. and the inner ridge 356. Raised section 350 has a tapered shape Therefore, the distance between inner surface 310 and outer surface 300 is from outer ridge 352 to inner ridge 3. It decreases towards 56. This makes the width of ridges 352, 354 and 356 Yes, the thickness varies. In some embodiments, the outer surface between the outer surface 300 and the inner surface 310 The thickness T1 at the side ridges 352 is preferably about 5 mm, and the thickness T1 at the middle ridges 354 is preferably about 5 mm. Its thickness T2 at the inner ridge 356 is approximately 4 mm; The length is approximately 3rnrn. Other dimensional relationships may be used to achieve the same function and results. It is clear that this is possible depending on the person in charge.

The embodiment of the cervical cap of FIG. a flange 336 extending outwardly from the flange 336; In contrast, a suitable cap It can be configured without including the flange 336 in the specification.

In a further preferred variant, as shown in the embodiments shown in FIGS. 1, 2 and 4, , the rim is rounded.

FIG. 4 shows a further embodiment of the cervical cap according to the invention. Cap 40 is inside Raised section 450 with spiral shaped ridges 452 formed on surface 410 have. The helical-shaped ridge 452 indicates that the cap 40 is on the outer surface of the cervix. This allows for a secure fit.

In the embodiment illustrated in FIG. It has been extended since then. The rim 430 preferably terminates in a rounded area 432. . The helical ridge 452 terminates at an inner end 458 that connects the wall region 434 to the dowel. It is adjacent to the portion 402 that joins the frame region 420. On the spiral ridge 452 The width or thickness W of the raised region 450 between the inner surface 410 and the outer surface 400 along 4 is approximately constant (or the inner portion 458 is of the same level as the inner surface 440). It is preferable to gradually decrease the amount until it reaches a bell. The space or recess 457 Formed between adjacent rows of spiral ridges 452. Cap 1 in space 457 0 has an inner diameter of about 18 mm to about 35 mm.

When inserting the cervical cap according to the present invention, use your fingers or a suitable The insert works a bulge over the pupil of the cervix to firmly secure that area of the cervix. Grip gently and effectively to prevent the cap from falling off. . To increase certainty, such as the unique dimensions of the cap, including the shape and dimensions of the dome. It is not necessary to add additional features. Special features to ensure cap positioning The same goes for different locations and formations. . Easy insertion and secure fit for both ring-shaped and spiral-shaped ridges It is advantageous to do this.

Various changes and modifications can be made to the present invention in light of the above disclosure. Of course. Accordingly, the invention herein is particularly described in light of the following claims. It can also be implemented as something other than a solid one.

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Claims (19)

[Claims] 1. In the cervical cap that covers the cervix, a dome part, a rim part and an opening end; the dome portion and the rim portion and adjacent to the open end portion; a raised section extending around the inner surface of the cap; A raised section includes at least a first and a first raised section projecting inwardly from said inner surface. 2 ridges, said ridge section being such that said cap is disposed over a portion of the cervix. characterized by being adapted to grip the external surface of the cervix when placed Cervical cap. 2. Claim 1, wherein the first and second raised portions have a generally annular shape. Cervical keys characterized in that they are arranged in substantially parallel relation to each other. Cap. 3. Claim 2, wherein the raised section comprises: having a wall thickness at the first ridge substantially equal to a wall thickness of the raised section; A cervical cap featuring: 4. Claim 3, wherein the edge is rounded at the open end. 1. A cervical cap, characterized in that it has a region that is 5. In claim 3, between the raised section and the dome portion, and a tapered region connecting the two. P. 6. In claim 1, the first and second protrusions are integrally continuous threads. A cervical cap characterized by the formation of a linear bulge. 7. Claim 6, wherein the inner portion of the cervical cap at the protuberance is A cervix whose diameter gradually decreases as it moves away from the open end. cap. 8. Claim 7, wherein the first protuberance is provided on an edge of the cap. A cervical cap characterized by: 9. Claim 8, wherein the cap has a rounded end at its open end. Cervical cap characterized by a region with a tinge of color. 10. It consists of a periphery, an opening, a raised section and a dome-shaped part, the dome-shaped portion is located on the opposite side of the open end; The raised section has an inner surface and an outer surface, and the raised section further has an inner surface and an outer surface. having first and second ring-shaped protuberances protruding from the center and arranged parallel to each other; death, The raised section is adjacent to the open end and the cap is adjacent to the cervix. The cervix is adapted to grasp the cervix when the cervix is covered. Cervical cap for covering the cervix. 11. Claim 10, wherein the dome-shaped portion is a hermetically sealed cervix. Department cap. 12. Claim 11, wherein the cervical cap further comprises the first and a third ring-shaped ridge disposed between the second ridges; The ring-shaped raised portion is substantially parallel to the first and second raised portions. Cervical cap. 13. In claim 11, the inner diameter of the dome-shaped portion is larger than the raised section. A cervical cap characterized by a diameter that gradually increases toward the cervix. 14. The rim part and an open end; a dome-shaped part disposed opposite to this opening end; provided near the opening end, and when attached to cover the cervix, the cervix a raised section that engages the the raised section has an inner surface and an outer surface, and the raised section has an inner surface and an outer surface; Cervical cap characterized by having a spiral ridge extending from the cervix. P. 15. Claim 14, wherein the dome of the cervical cap A cervical cap characterized in that the shaped part is sealed. 16. Claim 15, wherein the raised section on the cervical cap The inner diameter of the section is characterized in that it gradually decreases toward the dome portion. cervical cap. 17. 17. The dome of the cervical cap according to claim 16. characterized in that the internal diameter of the profile gradually increases towards the raised section. Cervical cap. 18. Claim 17, wherein the inner and outer surfaces of the raised section the raised section such that the distance from the surface gradually increases towards the open end; A cervical cap characterized by a tapered neck. 19. Claim 18, wherein the dome-shaped portion has a substantially uniform thickness. A cervical cap characterized by: