Process of manufacturing an aneurysm clip

A process of manufacturing an aneurysm clip having a coil spring, a first arm ending in a first clamping jaw, a first element connecting the first arm to the coil spring, a second arm ending in a second clamping jaw, and a second element connecting the second arm to the coil spring, said method comprising:

• providing a single, continuous, solid, elongated, resilient, cylindrical member of one of titanium and titanium alloy;
• shaping said member into a center section forming the coil spring, two end sections forming the clamping jaws, and two connecting sections forming the connecting elements;
• coining the two end sections of said member at a temperature between approximately 900.degree. and up to 1000.degree. F. to form the clamping jaws;
• and
• bending said clamping jaws to form the clip.

A process of manufacturing an aneurysm clip having a coil spring, a first arm ending in a first clamping jaw, a first element connecting the first arm to the coil spring, a second arm ending in a second clamping jaw, and a second element connecting the second arm to the coil spring, said arms exhibiting a deflection when a load is applied thereto, said method comprising:

• providing a single, continuous, solid, elongated, resilient, cylindrical member of one of titanium and titanium alloy;
• winding said member about a mandrel to form the coil spring, said winding providing the arms with a non-zero free angle therebetween which is predetermined to incorporate the deflection of the arms into the clamping force of the clip;
• and
• bending said clamping jaws to a position assuring that said clamping jaws are substantially parallel when clamped onto tissue.

A process of manufacturing an aneurysm clip having a coil spring, a first arm ending in a first clamping jaw, a first element connecting the first arm to the coil spring, a second arm ending in a second clamping jaw, and a second element connecting the second arm to the coil spring, said arms exhibiting a deflection when a load is applied thereto, said method comprising:

• providing a solid, cylindrical starting rod of one of titanium and titanium alloy;
• cold drawing said starting rod to reduce the outside diameter of said starting rod and increase the strength of said starting rod to an ultimate tensile strength of at least 145,000 lb/in.sup.2 ;
• cutting said starting rod to form a single, continuous, elongated, resilient member;
• winding said member about a mandrel to form the coil spring, said winding providing the arms with a non-zero free angle therebetween which is predetermined to incorporate the deflection of the arms into the clamping force of the clip;
• shaping said member into two end sections forming the clamping jaws and two connecting sections forming the connecting elements;
• coining the two end sections of said member at a temperature between approximately 900.degree. and up to 1000.degree. F. to form the clamping jaws;
• and
• bending said clamping jaws to a position assuring that said clamping jaws are substantially parallel when clamped onto tissue.