1. A polymeric stent, comprising:
a repeating unit comprising a unit cell having a shape of a closed figure that looks like a V-letter and comprising a first hinge portion bent inwardly to the unit cell and a second hinge portion facing the first hinge portion and bent outwardly from the unit cell; and a linker portion extended outwardly from a bent portion of the second hinge portion,
wherein the repeating units are disposed such that an end of a linker portion of one repeating unit is connected to a bent portion of a first hinge portion of another adjacent repeating unit, or
an end of a first hinge portion and an end of a second hinge portion of one repeating unit are connected to an end of a first hinge portion and an end of a second hinge portion of the another adjacent repeating unit, respectively.
2. The polymeric stent of claim 1, wherein the polymeric stent comprises three or more repeating units,
the repeating units are disposed such that an end of a linker portion of one repeating unit is connected to a bent portion of a first hinge portion of another adjacent repeating unit, and
an end of a first hinge portion and an end of a second hinge portion of one repeating unit are connected to an end of a first hinge portion and an end of a second hinge portion of further another adjacent repeating unit, respectively.
3. The polymeric stent of claim 1, wherein in the polymeric stent, all corners and ends of one repeating unit are connected to corners and ends of another adjacent repeating unit.
4. The polymeric stent of claim 1, wherein when the polymeric stent is a tube type, 4 to 15 repeating units are disposed in a circumferential direction of the polymeric stent.
5. The polymeric stent of claim 1, wherein an interior angle of the second hinge portion is 100 degrees or more.
6. The polymeric stent of claim 1, wherein in the repeating unit, an area of a rectangle that passes through both ends of the first hinge portion, both ends of the second hinge portion and an end of the linker portion is 0.1 to 45 mm2.
7. The polymeric stent of claim 1, wherein the repeating unit comprises a strut of the unit cell, which is a line that forms the shape of a closed figure that looks like a V-letter of the unit cell and a strut of the linker portion, which is a line that forms the linker portion.
8. The polymeric stent of claim 7, wherein an area of the strut of the unit cell and the strut of the linker portion is 5 to 46%, based on an area of a rectangle which passes through both ends of the first hinge portion, both ends of the second hinge portion, and an end of the linker portion.
9. The polymeric stent of claim 7, wherein a thickness of the strut of the unit cell and the strut of the linker portion is 80 to 160 \u03bcm.
10. The polymeric stent of claim 1, wherein when the polymeric stent is a tube type, a diameter of the polymeric stent is 2 to 8 mm.
11. The polymeric stent of claim 1, wherein the polymeric stent comprises a biodegradable polymer.
12. The polymeric stent of claim 1, wherein the repeating unit is formed by processing a polymeric tube using laser.
13. A method for manufacturing a polymeric stent, comprising:
forming a repeating unit including a unit cell having a shape of a closed figure that looks like a V-letter and including a first hinge portion bent inwardly to the unit cell and a second hinge portion facing the first hinge portion and bent outwardly from the unit cell; and a linker portion extended outwardly from the bent portion of the second hinge portion; and
disposing the repeating units, such that an end of a linker portion of one repeating unit is connected to a bent portion of a first hinge portion of another adjacent repeating unit, or
forming the repeating units continuously such that an end of a first hinge portion and an end of a second hinge portion of one repeating unit are connected to an end of a first hinge portion and an end of a second hinge portion of the another adjacent repeating unit, respectively.
14. The method of claim 13, wherein the repeating unit is formed by using laser.
15. The method of claim 13, wherein the repeating unit is formed on a side surface of a polymeric tube.
16. The method of claim 14, wherein the repeating unit is formed on a side surface of a polymeric tube.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An aircraft landing gear assembly comprising a bogie beam, an axle extending through the bogie beam and a jacking dome fitting extending through a sidewall of the bogie beam and arranged to be in contact with the axle during jacking so as to transfer vertical loads applied to the jacking dome fitting directly to the axle.
2. The aircraft landing gear assembly according to claim 1, wherein the bogie beam sidewall includes a region of increased thickness through which the jacking dome fitting extends and which is arranged to react lateral loadings applied to the jacking dome fitting.
3. The aircraft landing gear assembly according to claim 2, wherein the region of increased thickness is either integrally formed in the bogie beam sidewall or comprises a separate element secured to the bogie beam sidewall.
4. The aircraft landing gear assembly according to claim 1, wherein the jacking dome fitting is biased into contact with the axle.
5. The aircraft landing gear assembly according to claim 4, wherein the jacking dome fitting is secured to one end of an elongate resilient element, the elongate resilient element biasing the jacking dome fitting into contact with the axle.
6. The aircraft landing gear assembly according to claim 4, wherein one or more wedge elements are located between a portion of the jacking dome fitting and the bogie beam sidewall, thereby urging the jacking dome fitting into contact with the axle.
7. The aircraft landing gear assembly according to claim 4, wherein the jacking dome fitting includes a threaded collar in engagement with a threaded portion of the jacking dome fitting and in engagement with the bogie beam sidewall, whereby the threaded collar urges the jacking dome fitting into contact with the axle.
8. The aircraft landing gear assembly according to claim 1, wherein the jacking dome fitting is biased away from the axle when said jacking dome fitting is not loaded by a jack.
9. The aircraft landing gear assembly according to claim 1, wherein the jacking dome fitting comprises a further portion in mechanical engagement with the axle, whereby lateral loads applied to the jacking dome fitting are transmitted to the axle.
10. The aircraft landing gear assembly according to claim 9, wherein the further portion encircles a region of the axle, and the further portion and the axle include aligned recesses arranged to receive a locking spigot pin.