Two-part medical instrument
View Patent ↗A two-part medical instrument is proposed, comprising a first part having a peg and a second part having a peg receiver, wherein first part and second part are connected to one another by a peg/peg receiver connection and the first part is made of a plastics material, wherein the peg has a peripheral edge bead.
1. Two-part medical instrument, comprising:
a first part having an integral peg; and
a second part having a peg receiver;
wherein:
the first part and the second part are connected to one another by a peg/peg receiver connection;
the first part is made of a plastics material;
the peg has a one-piece peg body with a continuous cylindrical surface and a continuous surrounding edge bead;
said edge bead has a larger diameter than the peg body for securing the peg in the peg receiver and forming the peg/peg receiver connection;
said peg receiver has a first opening that receives the peg body and a second opening that receives the edge bead;
said edge bead having a larger diameter than the first opening;
said second opening having a larger diameter than the first opening;
said second opening having a contact surface which prevents the movement of the second part and the first part away from each other by contact with the edge bead; and
the peg with the peg body and edge bead is elastic and pushable through the first opening into said peg receiver.
2. Two-part medical instrument according to claim 1 , wherein a height of the second opening in a longitudinal direction of the peg receiver is smaller than a height of the first opening.
3. Two-part medical instrument according to claim 1 wherein the second opening is disposed at a surface of the second part.
4. Two-part medical instrument according to claim 3 , wherein the second opening is disposed in a countersunk manner.
5. Two-part medical instrument according to claim 1 , wherein the second opening has an annular cross section around the peg receiver.
6. Two-part medical instrument according to claim 1 , wherein the peg has a central recess.
7. Two-part medical instrument according to claim 6 , wherein the central recess is of a cylindrical shape.
8. Two-part medical instrument according to claim 6 , wherein the central recess has a greater height than the peg.
9. Two-part medical instrument according to claim 6 , wherein the central recess extends below a surface of the first part.
10. Two-part medical instrument according to claim 1 , wherein the second part is made of a plastics material.
11. Two-part medical instrument according to claim 1 , wherein the peg receiver is of a rotationally symmetrical shape.
12. Two-part medical instrument according to claim 1 , wherein the peg receiver has an insertion recess for the peg that faces the first part.
13. Two-part medical instrument according to claim 1 , wherein the peg is bevelled at its top end.
14. Two-part medical instrument according to claim 1 , wherein the peg body and the edge bead are adapted so that the peg is insertable with the edge bead into second opening.
15. Two-part medical instrument according to claim 1 , wherein the peg is adapted to be rotatable in the peg receiver.
16. Two-part medical instrument according to claim 1 , wherein the edge bead is adapted so that the first part and the second part are detachably fastened to one another by said edge bead.
17. Two-part medical instrument according to claim 1 , wherein the peg is adapted so that it has an elastic extensibility of between 1% and 5% transversely of a height direction.
18. Two-part medical instrument according to claim 1 , wherein the edge bead projects in one direction by a width of 1% to 5% beyond the peg body.
19. Two-part medical instrument according to claim 1 , wherein the edge bead projects transversely of a longitudinal direction of the peg beyond the peg body.
20. Two-part medical instrument, comprising:
a first part having an integral peg; and
a second part having a peg receiver;
wherein:
the first part and the second part are connected to one another by a peg/peg receiver connection;
the first part is made of a plastics material;
the peg has a one-piece peg body with a continuous cylindrical surface and a continuous surrounding edge bead;
said edge bead has a larger diameter than the peg body for securing the peg in the peg receiver and forming the peg/peg receiver connection;
said peg has a central recess which extends to a top end of the peg and through the edge bead arranged at said top end of said peg; and
the peg with the peg body and edge bead is elastic and pushable into said peg receiver.
21. Two-part medical instrument, comprising:
a first part having a peg; and
a second part having a peg receiver;
wherein:
the first part and the second part are connected to one another by a peg/peg receiver connection;
the first part is made of a plastics material;
the peg has a peg body and a surrounding edge bead;
the peg has a central recess which has a greater height than the peg;
said edge bead has a larger diameter than the peg body for securing the peg in the peg receiver and forming the peg/peg receiver connection;
said peg receiver has a first opening that receives the peg body and a second opening that receives the edge bead;
said edge bead having a larger diameter than the first opening;
said second opening having a larger diameter than the first opening;
said second opening having a contact surface which prevents the movement of the second part and the first part away from each other by contact with the edge bead; and
the peg with the peg body and edge bead is elastic and pushable into said peg receiver.