1. An apparatus comprising:
a caliper configured to measure at least one physical dimension;
a display configured to present a first representation and a second representation of a measurement provided by the caliper, wherein a format of the first representation is different from a format of the second representation, and the first representation is approximately simultaneously displayed with the second representation, and wherein the display is configured to present a representation of an approximate difference between the first representation and the second representation of the measurement.
2. The apparatus of claim 1, wherein the format of the first representation includes one of a decimal format and a fractional format.
3. The apparatus of claim 2, wherein the format of the second representation includes one of a decimal format and a fractional format, and is different from the format of the first representation.
4. The apparatus of claim 1, wherein the format of the first representation has metric units and the format of the second representation has U.S. units.
5. The apparatus of claim 1, wherein the resolution of the first representation is selectable.
6. The apparatus of claim 1, wherein the format of the first representation includes a first measurement unit and the format of the second representation includes a second measurement unit, different from the first measurement unit.
7. The apparatus of claim 1, further comprising:
an electronics package that includes the display.
8. The apparatus of claim 1, wherein the display includes a unit indicator.
9. The apparatus of claim 1, wherein the display includes a variance indicator.
10. The apparatus of claim 1, further comprising:
an electronics package configured to provide data representative of the first representation and the second representation to an external display module.
11. The apparatus of claim 10, wherein a hardwire connection provides the data from the electronics package to the external display module.
12. The apparatus of claim 10, wherein a wireless connection provides the data from the electronics package to the external display module.
13. A method comprising:
simultaneously displaying on a display of a caliper, a first representation and a second representation of a measurement provided by the caliper, wherein a format of the first representation is different from a format of the second representation, and displaying a representation of an approximate difference between the first representation and the second representation of the measurement.
14. The method of claim 13, further comprising:
providing data that represents the first representation and the second representation to an external display module.
15. The method of claim 13, wherein the format of the first representation includes one of a decimal format and a fractional format.
16. The method of claim 13, wherein the format of the first representation has metric units and the of the second representation format has U.S. units.
17. A computer program product, encoded on a computer-readable medium, operable to cause a data processing apparatus to perform operations comprising:
simultaneously displaying on a display of a caliper, a first representation and a second representation of a measurement provided by the caliper, wherein a format of the first representation is different from the format of the second representation, and displaying a representation of an approximate difference between the first representation and the second representation of the measurement.
18. The computer program product of claim 17, further operable to cause the data processing apparatus to perform operations comprising:
providing data that represents the first representation and the second representation to an external display module.
19. The computer program product of claim 17, wherein the format of the first representation includes one of a decimal format and a fractional format.
20. The computer program product of claim 17, wherein the format of the first representation has metric units and the of the second representation format has U.S. units.
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. A stent comprising:
a rolled sheet of material forming a tube having a plurality of layers, wherein said sheet is perforated with a plurality of perforations, said perforations are shaped as waveforms, and wherein perforations on each layer overlap perforations on each of the other layers to form gaps in the tube formed by the rolled sheet.
2. The stent of claim 1 wherein said rolled sheet of material is sized and proportioned to fit within a blood vessel of the brain of a patient.
3. The stent of claim 2 wherein the perforations comprise at least about 80% of the surface area of the rolled sheet.
4. The stent of claim 2 wherein the perforations are arranged in circumferentially extending bands around a circumference of the stent, and wherein a plurality of said circumferentially extending bands of perforations are disposed along the length of the stent.
5. The stent of claim 1 wherein the perforations comprise at least about 80% of the surface area of the rolled sheet.
6. The stent of claim 1 wherein the perforations are arranged in circumferentially extending bands around a circumference of the stent, and wherein a plurality of said circumferentially extending bands of perforations are disposed along the length of the stent.
7. A stent comprising:
a rolled sheet of material forming a tube having first and second layers, wherein said sheet is perforated with a plurality of perforations, said perforations are shaped as waveforms, wherein perforations on the first layer overlap perforations on the second layer to form gaps in the tube formed by the rolled sheet, and wherein said rolled sheet of material is sized and proportioned to fit within a blood vessel of the brain of a patient.
8. The intent of claim 7 wherein the perforations comprise at least about 80% of the surface area of the rolled sheet.
9. The stent of claim 7 wherein the perforations are arranged in circumferentially extending bands around a circumference of the stent, and wherein a plurality of said circumferentially extending bands of perforations are disposed along the length of the stent.
10. A stent comprising:
a sheet of material, said sheet being capable of rolling into a tubular structure having at least two layers, said sheet characterized by a transverse edge which, in the rolled tubular structure corresponds to the circumference of the stent, said sheet characterized by a longitudinal edge which, in the rolled tubular structure corresponds to the longitude of the stent;
said sheet being perforated by a plurality of perforations said perforations shaped as sinusoidal waves, said perforations being placed on the sheet so that a first group of said perforations are circumferentially aligned along a first longitudinal location on the intent, and a second group of said perforations are circumferentially aligned along a second longitudinal location on the stent, and subsequent groups of perforations are likewise circumferentially aligned along the length of the stent, thus forming a plurality of generally circumferentially extending sinuous hoops connected by longitudinally extending staves in the stent;
said sheet being sized and proportioned to fit within a blood vessel of the brain of a patient.
11. A method of treating a blood vessel in a patient, wherein said blood vessel has an aneurysm located on the wall of the blood vessel, said method comprising the steps of:
providing a stent comprising:
a sheet of material, said sheet being capable of rolling into a tubular structure having at least two layers, said sheet characterized by a transverse edge which, in the rolled tubular structure corresponds to the circumference of the stent, said sheet characterized by a longitudinal edge which, in the rolled tubular structure corresponds to the longitude of the stent;
said sheet being perforated by a plurality of perforations, said perforations shaped as sinusoidal waves, said perforations being placed on the sheet so that a first group of said perforations are circumferentially aligned along a first longitudinal location on the stent, and a second group of said perforations are circumferentially aligned along a second longitudinal location on the stent, and subsequent groups of perforations are likewise circumferentially aligned along length of the stent, thus forming a plurality of generally circumferentially extending sinuous hoops connected by longitudinally extending staves in the stent;
percutaneously inserting the stent into the blood vessel and positioning the stent so that the stent bridges the aneurysm; and
releasing the stent within the blood vessel.
12. The method of claim 11 wherein the blood vessel is disposed within the brain of the patient.