156A Week 9

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Started the thinking process of a testbed to test the needles they currently use as a base test and use our optimized hollow needles as a comparison

  • Setup experiments on testing the behaviors of the needles. The characteristics that the team focuses on, but not limited to, are the depth of the microneedle penetration through different objects such as pig-skin or jelly, or something that is similar to the stiffness of the human skin; the deformation of the hollow needle versus the depth of penetration and the speed at which the hollow needles operate. 

  • For testing the deformation of the hollow needle, we can measure the amount of displacement of the bending at various applying force. Also, we need to determine the breaking force or the force at which break/fracture the needle; and the value of the force that permanently deformed the needle.

Referenced from: A SIMPLE SYSTEM FOR THIN ROD BENDING MEASUREMENT

Referenced from: A SIMPLE SYSTEM FOR THIN ROD BENDING MEASUREMENT

Accomplishments from Previous Week

• • A deeper understanding of the project requirements and its objectives. 

  • Participated in a skin rejuvenation surgery on learning how to use the micro-needling device, and its applying procedures. 

  • Communicated with sponsor regards to the area of top priority.

Goals for Next Week (list names after each item). Use specific and measurable objectives. 

Main priority (All team members)

• • Design a risk reduction testbed to test our potential designs.

  • More online research and exploration, such as deeper understanding of the micro-needling device, dermis, rejuvenation skincare, characteristics of the collagen, and strengths and weaknesses of the hollow needles. 

  • Research testing method on the deformation of the needles.

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments

• • Arranged weekly meetings to update and assist with the project.

  • Arranged surgery participation to understand the application of the micro-needling device, such as how to use it, its strengths and weaknesses during the surgery. 

  • He told us to focus on the deformation of the hollow needles; to increase efficiency such as save time for the surgery when using the hollow needle design. 

  • Including topical anesthesia to be released from the hollow needles

Instructor Comments from Last Meeting and Actions Taken to Address these Comments

• • The primary focus was to explore top priorities; talk to the sponsor about it.

  • focus on one specific area for risk reduction; in this case, it is the hollow needle design and designing a testbed to optimize our testing procedure.

Risks and Areas of Concern

• • The structure of materials of the needles may deform/break during the injection.

  • The energy may impact the conditions of the injected agent. 

  • The needles arrangement across the device.

Resources or Information Required but not Available

• Waiting on a micro-needling device from Dr. Duncan to be shipped for us to get hands-on experience with it.

Schedule

• • • Describe the upcoming milestone

      • Design our risk reduction test plan

Budget (list amount spent and amount remaining)

• • N/A