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Method of manufacturing a surgical instrument or prosthesis

  • US 9,770,855 B2
  • Filed: 05/11/2012
  • Issued: 09/26/2017
  • Est. Priority Date: 05/12/2011
  • Status: Active Grant
First Claim
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1. A method of manufacturing a surgical instrument or prosthesis, comprising the steps of:

  • injecting a first material into a first mold to form an interim component; and

    injecting a second material into a second mold containing at least part of the interim component to form the surgical instrument or prosthesis such that portions of the first and second materials are exposed at the external surface of the surgical instrument or prosthesis;

    wherein the first and second materials are visually distinct such that at least one exposed portion of the first or second material adjacent to an exposed portion of the other material forms a marking which is visible to a user,wherein in the step of injecting the second material into the second mold comprises injecting the second material such that the second material is deposited upon a selected portion of the surface of the interim component such that the second material in contact with the selected portion forms a marking;

    wherein the selected portion of the surface of the interim component has a recess arranged to receive the second material to form the marking;

    wherein the recess communicates with at least one blind hole formed in the interim component, the at least one blind hole spaced apart from the surface of the interim component surrounding the recess; and

    wherein the blind hole is arranged to receive gas within the recess during the step of injecting the second material into the second mold.

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