The following report is a part of a thesis project for product development at an undergraduate
level. The originator of the project is Orthopedic Care Scandinavia AB that is located in
Stockholm and is focused on medical technology. The thesis comprises 15 credits and is
carried out the spring semester of 2015 by the two authoring mechanical engineering students
at Mälardalen University.
The mission includes a product development concept of a surgical instrument detail used in
endoscopic surgery. The detail is a suture anchor that is especially adapted to attach sutures
for arthroscopic surgery, mostly for hip and shoulder repairs.
The product development project has been conducted after an extensive study in medical
technology and the regulations that are relevant for working in this subject area. The
originator Ortopedic Care Scandinavia AB ordered the project with the hope of getting a
concept that they would be able to patent, manufacture and produce for resale. The originator
wanted a suture anchor with a simple mounting method, and with smaller dimensions than the
suture anchors they are currently using.
The product development study was based on the following problem formulation:
• Does the product simplify the technical procedure for attachment of the suture when
working with arthroscopy?
• What is the most e
fficient way to optimize the tension in the thread while putting the suture
anchor into place?
• What kind of changes of existing technical solutions is required for a new suture anchors to
achieve a sufficient inventive step to be patentable?
To achieve the goal of creating a new type of suture anchors the product development group
made a comprehensive theoretical framework that includes both medical technology and
product development. In order to scientifically establish its result a number of product
development tools were used, including a competitive analysis of existing products in the
market which analyze different types of fastening techniques and validate various properties
of suture anchors.
The result of the project work became the suture anchor Enkel Infästning that is presented in
rendered CAD images and a description of the intended fastening technology. Arguments for
height of the technical solution and what makes this invention patentable is presented in the
results. Manufacturing method and strength strain is presented using computer-aided design
tools where the simulation of injection molding is made and FEM analysis demonstrates that
the construction of the product will contain for the intended purpose.
2015. , 46 p.