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US 7,063,716 B2Granted
Uniform stress needle
AssigneeTyco Healthcare Group LP
InventorScott Cunningham
Life of this patent
Estimating the term…
Abstract
A linear surgical needle is provided having a body portion including a proximal end section; a central section; and a distal end section. The distal end section has a substantially parabolic configuration for producing a substantially uniform stress profile along a length thereof.
Claims8
A uniform stress needle, comprising:
- a proximal end section configured and adapted to secure a suture thereto;
- a central section having a uniform transverse cross-sectional profile;
- and
- a distal end section having a parabolic surface profile for producing a substantially uniform stress along a length thereof, the surface profile being defined by the following equation:
- d=(((32W)/(πσ))*(Xn))^(⅓)
- where
- d=measured diameter at location Xn;
- W=load normal to the needle;
- Xn=distance from a distal-most end of the needle;
- and
- σ=chosen stress restraint.
8 more elements
A surgical needle, comprising:
- a linear body portion including:
- a proximal end section;
- a central section;
- and
- a distal end section, the distal end section having a substantially parabolic configuration for producing a substantially uniform stress profile along a length thereof;
- wherein the distal end section has a diameter determined according to the following equation:
- d=(((32W)/(πσ))*(Xn))^(⅓)
- where
- d=measured diameter at location Xn;
- W=load normal to the needle;
- Xn=distance from a distal-most end of the needle;
- and
- σ=chosen stress restraint.
10 more elements
Dependencies are inferred from the claim text.