1. An intramedullary nail, comprising:
a proximal portion, a middle portion and a distal portion, said proximal portion having a longitudinal axis, a longitudinal slot exending parallel to the longitudinal axis and a longitudinal bore extending over said slot in the distal direction, said longitudinal bore having an internal thread receiving a compression screw;
an insert having an internal diameter, an external diameter, a through-going bore along the longitude of the insert and at least one guiding bore transverse to the longitudinal axis of the insert, the guiding bore adapted to receive a fixing element, the insert positioned with respect to the compression screw such that the insert is movable in a proximal direction when the compression screw is entered in the internal thread; and
means for providing rotationally fixed positioning of the insert inside the longitudinal bore in the proximal portion of the nail.
2. The intramedullary nail of claim 1, wherein the means for providing rotationally fixed positioning of the insert includes a pin that cooperates with a guiding groove formed in the insert.
3. The intramedullary nail of claim 2, further comprising a cap screw adapted to be inserted in the internal thread.
4. The intramedullary nail of claim 3, wherein the external diameter of the cap screw corresponds to the external diameter of the insert.
5. An intramedullary nail, comprising:
a proximal portion, a middle portion and a distal portion, said proximal portion having a longitudinal axis, a longitudinal slot extending parallel to the longitudinal axis and a longitudinal bore extending over said slot in the distal direction, said longitudinal bore having an internal thread receiving a compression screw;
an insert having a through-going bore along the longitude of the insert and at least one guiding bore transverse to the longitudinal axis of the insert, the guiding bore adapted to receive a fixing element, the insert positioned with respect to the compression screw such that the insert is movable in a proximal direction when the compression screw is entered in the internal thread; and
a pin that cooperates with a guiding groove formed in the insert to provide rotationally fixed positioning of the insert inside the longitudinal bore.
6. The intramedullary nail of claim 4, wherein the means for providing rotationally fixed positioning of the insert includes a pin that cooperates with a guiding groove formed in the insert.
7. The intramedullary nail of claim 5, further comprising a cap screw adapted to be inserted in the internal thread.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
I claim:
1. An injection molding head designed for receiving epoxy based adhesive materials from an extruder, and designed to extrude relatively large slabs of said epoxy based adhesive materials into a mold cavity, said injection molding head comprising:
an inlet end portion having an inlet opening;
an outlet end portion having an outlet opening;
a center member disposed between first and second transfer units, said center member comprising a center bore, an inlet passage in fluid communication with the inlet end portion, and an outlet passage in fluid communication with the outlet end portion;
wherein the inlet opening having an approximate 4-12 square inch cross section;
wherein the outlet opening having an approximate 0.75 square inch cross section.
2. The injection molding head as recited in claim 1, further comprising a rotary valve, said rotary valve comprising a rotary member.
3. The injection molding head as recited in claim 2, wherein the rotary member rotatably extends within the center bore of the center member defining a first partitioned area and a second partitioned area.
4. The injection molding head as recited in claim 1, wherein the outlet end portion and the inlet end portion is on an axis.
5. The injection molding head as recited in claim 3, wherein the rotary member defining a first flow channel that directs the material to the first transfer unit, and a second flow channel that directs the material to the second transfer unit.
6. An injection molding head designed for receiving epoxy based adhesive materials from an extruder, and designed to extrude relatively large slabs of said epoxy based adhesive materials into a mold cavity, said injection molding head comprising:
a main body portion;
an inlet end portion;
first and second outlet end portions disposed on opposite sides of the main body portion;
said main body portion comprising a center bore, an inlet passage in fluid communication with the inlet end portion, a first outlet passage in fluid communication with the first outlet end portion, and a second outlet passage in fluid communication with the second outlet end portion;
a rotary valve that extends within the center bore of the main body portion defining a first partitioned area and a second partitioned area;
wherein the inlet end portion having an opening, said opening having an approximate 4-12 square inch cross section;
wherein the first and second outlet end portions each having an opening, each of said openings having an approximate 0.75 square inch cross section.
7. The injection molding head as recited in claim 6, wherein the rotary valve defining a first flow channel that directs the material to the first outlet end portion, and a second flow channel that directs the material to the second outlet end portion.
8. An injection molding head designed for receiving epoxy based adhesive materials from an extruder, and designed to extrude relatively large slabs of said epoxy based adhesive materials into a mold cavity, said injection molding head comprising:
a main body portion;
an inlet end portion;
first and second outlet end portions disposed on opposite sides of the main body portion;
said main body portion comprising a center bore, an inlet passage in fluid communication with the inlet end portion, a first outlet passage in fluid communication with the first outlet end portion, and a second outlet passage in fluid communication with the second outlet end portion;
a slide valve comprising a first channel in fluid communication with the first outlet passage, and a second channel in fluid communication with the second outlet passage, said slide valve extends within the center bore of the main body portion defining a first partitioned area and a second partitioned area;
a cylinder attached to the slide valve;
wherein the inlet end portion having an opening, said opening having an approximate 4-12 square inch cross section;
wherein the first and second outlet end portions each having an opening, each of said openings having an approximate 0.75 square inch cross section.
9. The injection molding head as recited in claim 8, wherein the slide valve further defining a first flow channel that directs the material to the first channel, and a second flow channel that directs the material to the second channel.
10. The injection molding head as recited in claim 8, wherein the cylinder is a hydraulic cylinder.