Orthopedic tool made of a plastic material

Abstract

The present invention relates to an orthopedic tool made of a plastic material (M) comprising at least one semi-aromatic polyamide (P) comprising more than 50 mole % of recurring units obtained by the polycondensation reaction between at least one aliphatic diacid or derivative thereof and at least one aromatic diamine. In particular, hip rasp consisting essentially of at least one plastic material comprising at least one PMXDA polymer.

1 - An orthopedic tool consisting essentially of at least one plastic material (M), wherein the plastic material (M) comprises at least one semi-aromatic polyamide (P) comprising more than 50 mole % of recurring units obtained by the polycondensation reaction between at least one aliphatic diacid or derivative thereof and at least one aromatic diamine. 
   
   
       2 - The orthopedic tool according to  claim 1 , which is chosen from instruments and ancillaries used to remove bones for hip or knee prosthetic surgery. 
   
   
       3 - The orthopedic tool according to  claim 2 , which is a hip rasp. 
   
   
       4 - (canceled) 
   
   
       5 - The orthopedic tool according to  claim 1 , wherein the semi-aromatic polyamide (P) is a PMXDA polymer. 
   
   
       6 - The orthopedic tool according to  claim 1 , wherein the semi-aromatic polyamide (P) is contained in the plastic material (M) in an amount of from 35 to 50 wt. %, based on the total weight of the plastic material (M). 
   
   
       7 - The orthopedic tool according to  claim 1 , wherein the plastic material (M) further comprises glass fiber, in an amount of from 40 to 60 wt. %, based on the weight of the plastic material (M). 
   
   
       8 - The orthopedic tool according to  claim 1 , wherein the plastic material (M) further comprises an aliphatic polyamide (P*) selected from the group consisting of nylon 6, nylon 66 and nylon 12, in an amount of from 3 to 15 wt. %, based on the weight of the semi-aromatic polyamide (P). 
   
   
       9 - In an orthopedic tool consisting essentially of a USP Class VI compliant plastic material, the improvement which comprises:
 said USP Class VI compliant plastic material comprising from 25 to 60 wt. % of a PMXDA polymer and from 30 to 60 wt. % of glass fiber, all percentages being based on the total weight of the plastic material.   
   
   
       10 - A hip rasp consisting essentially of at least one plastic material comprising at least one PMXDA polymer. 
   
   
       11 - The orthopedic tool according to  claim 1 , wherein the plastic material (M) further comprises a pigment. 
   
   
       12 - An orthopedic tool comprising at least one part consisting essentially of at least one plastic material (M), wherein the plastic material (M) comprises at least one semi-aromatic polyamide (P) comprising more than 50 mole % of recurring units obtained by the polycondensation reaction between at least one aliphatic diacid or derivative thereof and at least one aromatic diamine. 
   
   
       13 - The orthopedic tool according to  claim 12 , which is chosen from instruments and ancillaries used to remove bones for hip or knee prosthetic surgery. 
   
   
       14 - The orthopedic tool according to  claim 13 , which is a hip rasp. 
   
   
       15 - The orthopedic tool according to  claim 12 , wherein the semi-aromatic polyamide (P) is a PMXDA polymer. 
   
   
       16 - The orthopedic tool according to  claim 12 , wherein the semi-aromatic polyamide (P) is contained in the plastic material (M) in an amount of from 35 to 50 wt. %, based on the total weight of the plastic material (M). 
   
   
       17 - The orthopedic tool according to  claim 12 , wherein the plastic material (M) further comprises glass fiber, in an amount of from 40 to 60 wt. %, based on the weight of the plastic material (M). 
   
   
       18 - The orthopedic tool according to  claim 12 , wherein the plastic material (M) further comprises an aliphatic polyamide (P*) selected from the group consisting of nylon 6, nylon 66 and nylon 12, in an amount of from 3 to 15 wt. %, based on the weight of the semi-aromatic polyamide (P). 
   
   
       19 - The orthopedic tool according to  claim 12 , wherein the plastic material (M) further comprises a pigment. 
   
   
       20 - In an orthopedic tool comprising at least one part consisting essentially of, a USP Class VI compliant plastic material, the improvement which comprises:
 said USP Class VI compliant plastic material comprising from 25 to 60 wt. % of a PMXDA polymer and from 30 to 60 wt. % of glass fiber, all percentages being based on the total weight of the plastic material.