Vaginal pessary device for pelvic organ prolapse with improved collapsible construction
A pessary providing various structures, parts, and components to enable the pessary to remain deployed in a supportive position so that it may reliably provide the desired supportive capabilities. A ridge structure prevents over-rotation of the supportive members. The pessary can be formed preferably by injection molding where the mold has at least one insert. The geometry of the pessary can enable the pessary to have the required stiffness, flexibility, hinged capability, and softness where needed to achieve a pessary that is superior to prior art pessaries.
1. A pessary device, comprising:
a stem;
a plurality of support members hingedly connected to the stem; wherein each of the plurality of support members include an upper support portion and a lower support portion hingedly connected to each other by a central hinge, the lower support portion being hingedly connected to the stem with a respective lower hinge;
a ridge circumferentially located about the stem; wherein the ridge contacts an outer face of the lower support portion and prevents the lower support portion from rotating past a predetermined position;
whereby the ridge provides a stop to prevent pivoting of the support members past the predetermined position.
2. The pessary device of claim 1 ,
wherein the pessary is made of a first material and a second material, and
wherein the first material is more rigid than the second material.
3. The pessary device of claim 1 , wherein the respective upper support portions are connected to a top apex portion by a respective upper hinge.
4. The pessary device of claim 1 , wherein there is webbing arranged between each of the respective support members.
5. The pessary device of claim 1 , wherein the respective lower hinges are fixed at a height on the stem above the ridge.
6. The pessary device of claim 1 , wherein the pessary is a unitary piece of material.
7. The pessary device of claim 1 , wherein the stem and the plurality of support members are formed of at least two distinct parts.
8. The pessary device of claim 1 ,
wherein, in a first condition the support members have a first height and a first outer diameter,
wherein, in a second condition the support member have a second height and a second outer diameter, and
wherein the first height is greater than the second height and the first outer diameter is smaller than the second outer diameter.
9. The pessary device of claim 8 ,
wherein the support members have an intermediate condition between the first condition and the second condition, and in the intermediate condition the support members have a third height and a third outer diameter,
wherein the third height is less than the first height and greater than the second height, and
wherein the third outer diameter is greater than both the first and second outer diameters.
10. The pessary device of claim 1 , further comprising webbing extending between respective neighboring supportive members of the plurality of support members.
11. The pessary device of claim 1 , wherein the plurality of supportive members is four supportive members.
12. The pessary device of claim 11 , wherein the four supportive members are equally spaced circumferentially about the stem.
13. A pessary, comprising:
a stem;
a circumferential ridge extending radially outward from the stem at a distal end of the stem; and
a support member including a plurality of support member petals, wherein each support member petals includes an upper support member and a lower support member, where the upper and lower support members are attached together via a central hinge and the lower support member attaches to the stem via a lower hinge;
wherein the circumferential ridge contacts an outer face of the respective lower support members and prevents the lower support members from rotating past a predetermined position.
14. The pessary of claim 13 ,
wherein, in a first configuration the support member has a first height and a first outer diameter,
wherein, in a second configuration the support member has a second height and a second outer diameter, and
wherein the first height is greater than the second height and the first outer diameter is smaller than the second outer diameter.
15. The pessary device of claim 14 ,
wherein the support member has an intermediate configuration between the first configuration and the second configuration, and in the intermediate configuration the support member has a third height and a third outer diameter,
wherein the third height is less than the first height and greater than the second height, and
wherein the third outer diameter is greater than both the first and second outer diameters.
16. The pessary device of claim 13 , wherein the respective lower hinges are fixed at a height on the stem above the circumferential ridge.