Sample collection

1. A saliva collection apparatus comprising:

an open ended container to receive a saliva sample; and

a projecting surface that extends generally outwardly and upwardly from the open end of the container;

wherein the projecting surface is arranged to aid the collection of the saliva sample;

wherein the saliva sample comprises drool;

wherein the projecting surface comprises a roll-top edge;

wherein the roll-top edge comprises a lip engaging portion configured to match a shape of an anatomy of a user's lip;

wherein the projecting surface provides a funneling region of the lip engaging portion, arranged in use to funnel sample material downward, toward the open end of the container;

wherein the funneling region is provided as a dip between wings that angle upward at a plurality of sides of the projecting surface;

wherein the wings are provided on either side of a median line of the projecting surface;

wherein the funneling region comprises a concave surface extending between the wings in a direction generally perpendicular to the median line;

wherein the roll-top edge extends generally along the median line;

wherein the roll-top edge comprises a convex surface which intersects with the concave surface of the funneling region at a saddle point; and

wherein the saddle point is a local maximum of the convex surface and a local minimum of the concave surface.

2. The saliva collection apparatus according to claim 1 , wherein the open end comprises a first portion from which the projecting surface extends, and a second portion from which it does not extend, such that the second portion is generally inward of projecting surface and generally there-below.

3. The saliva collection apparatus according to claim 1 , wherein the projecting surface provides a contact region of the lip engaging portion, arranged in use to contact the lip of a user.

4. The saliva collection apparatus according to claim 3 , wherein the contact region comprises one of: a straight outer edge, and a concave outer edge.

5. The saliva collection apparatus according to claim 1 , wherein the projecting surface provides a funneling region of the lip engaging portion, arranged in use to funnel sample material downward, toward the open end of the container.

6. The saliva collection apparatus according to claim 5 , wherein the concavity of a contact region of a lip engaging portion transitions into the funneling region of the lip engaging portion such that material passed onto the projecting surface at the contact region is funneled there-from by the funneling region.

7. The saliva collection apparatus according to claim 1 , wherein the projecting surface extends from the open end, said open end being generally circular when viewed from above.

8. The saliva collection apparatus according to claim 1 , wherein the projecting surface comprises a low-friction surface.

9. The saliva collection apparatus according to claim 1 , wherein the projecting surface comprises an extension of a wall of the container.

10. The saliva collection apparatus according to claim 1 , wherein the projecting surface comprises an extension of a cylindrical wall of the container.

11. A method of saliva collection using a saliva collection apparatus comprising an open ended container to receive a sample from a user, the method comprising the steps of:

arranging a projecting surface, comprising a roll-top edge, that extends generally outwardly and upwardly from the open end of the container to form an ergonomic lip engaging portion, against the body of the user at or below the lip of the user;

wherein the projecting surface provides a funneling region of the lip engaging portion, arranged in use to funnel sample material downward, toward the open end of the container;

wherein the funneling region is provided as a dip between wings that angle upward at a plurality of sides of the projecting surface;

wherein the wings are provided on either side of a median line of the projecting surface;

wherein the funneling region comprises a concave surface extending between the wings in a direction generally perpendicular to the median line;

wherein the roll-top edge extends generally along the median line;

wherein the roll-top edge comprises a convex surface which intersects with the concave surface of the funneling region at a saddle point; and

wherein the saddle point is a local maximum of the convex surface and a local minimum of the concave surface;

engaging the roll-top edge of the projecting surface against the user's lip; and

collecting drool from the user while the roll-top edge is engaged against the user's lip, into the container, from the projecting surface.