초록 ▼

A method for upgrading a crutch, comprising the steps of providing a crutch having a leg, a first saddle, a first handle and a first foot; providing a second saddle different from the first saddle; removing the first saddle from the leg; and attaching the second saddle to the leg, wherein the first

A method for upgrading a crutch, comprising the steps of providing a crutch having a leg, a first saddle, a first handle and a first foot; providing a second saddle different from the first saddle; removing the first saddle from the leg; and attaching the second saddle to the leg, wherein the first saddle has an upper surface that is symmetric about two planes and wherein the second saddle has an upper surface that is symmetric about only one plane, and certain crutches to use therewith.

대표청구항 ▼

1. A method for upgrading a crutch, comprising the steps of providing a crutch having a leg, a first saddle, a first handle and a first foot, the first saddle comprising a frame and a resilient member, the frame having a perimeter with a hyperbolic paraboloid shape and the resilient member being an

1. A method for upgrading a crutch, comprising the steps of providing a crutch having a leg, a first saddle, a first handle and a first foot, the first saddle comprising a frame and a resilient member, the frame having a perimeter with a hyperbolic paraboloid shape and the resilient member being an elastomeric molded member attached to the perimeter, wherein the first saddle is configured to be removable and replaceable by a user;providing a second saddle different from the first saddle, the second saddle comprising a frame and a resilient member, the frame having a perimeter with a hyperbolic paraboloid shape and the resilient member being an elastomeric molded member attached to the perimeter, wherein the second saddle is configured to be removable and replaceable by a user;removing the first saddle from the leg;attaching the second saddle to the leg. 2. The method of claim 1 wherein the first saddle has an upper surface that is symmetric about two planes and wherein the second saddle has an upper surface that is symmetric about only one plane. 3. The method of claim 1 wherein the resilient member of the second saddle is breathable. 4. The method of claim 1, further comprising the steps of providing a second handle that is different from the first handle;removing the first handle from the leg;attaching the second handle to the leg.