Applicator device
An applicator device capable of housing an insertable element includes a plunger member that is slideably engaged with the insertion member and has an insertion end and a gripper end. The gripper end of the plunger member consists of a locking mechanism having a diameter greater than the diameter of the plunger member. The insertion member also includes a locking mechanism that is capable of engaging the locking mechanism of the plunger member that may prevent the plunger member from withdrawal.
1. An applicator device capable of housing an insertable element comprising:
a. an insertion member having a cylindrical central portion, an insertion end and an opposed gripper end having a smaller outer diameter than the cylindrical central portion of the insertion member,
b. a plunger insertable into the smaller diameter of the gripper end of the insertion member and having an insertion end and an opposed gripper end, and
c. a locking mechanism comprising at least one plunger lock element and at least one insertion member lock element;
wherein (1) the plunger is slidable in the insertion member between a second position, substantially withdrawn from the insertion member and a first position, substantially contained within the insertion member with the plunger insertion end disposed toward the insertion member insertion end to expel the insertable element contained within the insertion member; (2) the at least one plunger lock element and the at least one insertion member lock element are arranged and configured to engage when the plunger is disposed in the first position after expulsion of the insertable member; (3) at least one lock element has a taper lead; (4) the outer diameter of the gripper end of the plunger decreases in a direction towards the insertion end to create a sloped surface, the outer diameter of the gripper end of the tubular insertion member decreases in a direction away from the insertion end to create a sloped outer surface such that the outer diameter of the applicator device is substantially continuous where the gripper end of the plunger abuts the gripper end of the tubular insertion member; and (5) whereby the outer diameter of the plunger decreases to create a shoulder on the outer surface of the plunger such that the gripper end of the tubular insertion member is flush against the shoulder of the plunger.
2. The applicator device of claim 1 , wherein the at least one plunger lock element is disposed proximate the gripper end of the plunger, and the at least one insertion member lock element is disposed proximate the gripper end of the insertion member.
3. The applicator device of claim 1 , wherein the at least one insertion member lock element is located on an interior surface of the insertion member.
4. The applicator device of claim 1 , wherein the at least one plunger lock element comprises a raised element.
5. The applicator device of claim 4 , wherein the raised element comprises a radial protrusion.
6. The applicator device of claim 1 , wherein the at least one insertion member lock element comprises a raised element.
7. The applicator device of claim 6 , wherein the raised element comprises a radial ledge.
8. A method of inserting an element into a body cavity comprising the steps of:
a. inserting an applicator into the body cavity, the applicator comprising:
i. an insertion member having a cylindrical central portion, an insertion end and an opposed gripper end having a smaller outer diameter than the cylindrical central portion of the insertion member;
ii. a plunger insertable into the smaller diameter of the gripper end of the insertion member and having an insertion end and an opposed gripper end; and
iii. a locking mechanism comprising at least one plunger lock element and at least one insertion member lock element;
wherein the plunger is slidable in the insertion member between a second position, substantially withdrawn from the insertion member and a first position, substantially contained within the insertion member with the plunger insertion end disposed toward the insertion member insertion end to expel the insertable element contained within the insertion member; the outer diameter of the gripper end of the plunger decreases in a direction towards the insertion end to create a sloped surface, the outer diameter of the gripper end of the tubular insertion member decreases in a direction away from the insertion end to create a sloped outer surface such that the outer diameter of the applicator device is substantially continuous where the gripper end of the plunger abuts the gripper end of the tubular insertion member; and whereby the outer diameter of the plunger decreases to create a shoulder on the outer surface of the plunger such that the gripper end of the tubular insertion member is flush against the shoulder of the plunger;
b. sliding the plunger of the applicator into the insertion member to cause the at least one plunger lock element to engage the at least one insertion member lock element;
c. expelling an insertable device from the insertion end of the applicator and into the body cavity; and
d. withdrawing the applicator from the body cavity by withdrawing its plunger;
wherein at least one lock element has a taper lead.
9. The method of claim 8 , further comprising detecting the engagement of the at least one plunger lock element and the at least one insertion member lock element thereby signaling to the user the appropriate deployment of the insertable device in the body cavity.
10. The method of claim 8 , wherein the at least one plunger lock element and the at least one insertion member lock element remain engaged during the withdrawal of the plunger.