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US 7,546,775 B2Granted
Bend tool
AssigneeBose Corporation
InventorJason Chinavare
Life of this patent
Estimating the term…
Abstract
A tool for multi-axis mechanical testing of medical implant devices includes a plurality of pins arranged to form a contacting surface with a sample holder. The pins maintain rolling contact with the sample holder during a bending phase of a fatigue cycle and reduce the effects of friction and localized differential strain on the sample holder.
Claims20
An apparatus comprising:
- a bend tool comprising:
- a first end cap;
- a second end cap;
- and
- an array of pins, each pin in the array of pins having a first end rotatably supported by the first end cap and a second end rotatably supported by the second end cap, wherein the pins in the array of pins are arranged along a desired bend curve;
- and
- a sample holder having a tubular structure of elastic material with first and second ends to hold a stent therein and to be bent by contact with the bend tool.
4 more elements
A fatigue testing device for a stent, the device comprising:
- a bend tool, the bend tool including a first end cap, a second end cap, and an array of pins, each pin in the array of pins having a first end rotatably supported by the first end cap and a second end rotatably supported by the second end cap;
- and
- an upper strain relief tool, the upper strain relief tool having a first relief end cap, a second relief end cap, and an array of relief pins, each relief pin in the array of relief pins having a first end rotatably supported by the first relief end cap and a second end rotatably supported by the second relief end cap.
An apparatus comprising:
- a bend tool comprising:
- a first end cap;
- a second end cap;
- and
- an array of pins, each pin in the array of pins having a first end held by the first end cap and a second end held by the second end cap, each pin in the array supporting a rotatable sheath, wherein a first pin in the array of pins supports a first sheath characterized by a first length and a second pin in the array of pins supports a second sheath characterized by a second length, the second length different from the first length;
- and
- a sample holder having a tubular structure of elastic material with first and second ends to hold a stent and to be bent by contact with the bend tool.
4 more elements
Dependencies are inferred from the claim text.