#1 GADGET TOOLS Kawabe-san_En

Created Date: 2023-05-10/ updated date: 2023-05-12
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            • Currently a first year university student. he lives with his mothis, older sister, and grandparents.
              Congenital forearm defect. It takes about 50 minutes to commute to the university (30 minutes by train, 20 minutes on foot). 
            • In college he belongs to the literary circle. His hobbies include reading and writing novels, cooking, making sweets, and making bread. he prefers to read books rathis than e-books. he longs to read a book while holding a sling while commuting to school by train. 
            • His cooking and sweets are made when thise is something he wants to make or eat. His favorite food is pizza. he doesn't use his prosthetic hand when he cooks, he does it with one hand. When he goes out to eat, he likes to cut the steak hisself with the restaurant's knife and fork.
            • Congenital forearm defect. I usually use a decorative prosthesis. Life at home is often done without using prosthetic hands. Since it is congenital, there is no phantom limb pain and no abnormal sensations.
            •  The stump feels like a fingertip, and it is more stable to operate and work at a position close to the stump. The body tends to be left-right asymmetrical, and the muscles on the left side are difficult to develop overall. 
            • When using a decorative prosthesis, it is convenient to have the patient hold a toothbrush, but it is easier to remove the device and use the left stump instead of pressing paper. 
            • Because it is a decorative prosthetic hand, she can use her left hand to the extent that she can hold it, but it is difficult to use both hands practically.
            • ・Frequency: Make when there is something you want to make
              ・Situation: Do not use a prosthesis, fix something on the stump or hold a ball under the arm
            • ・Frequency: Using the train when commuting to school
              ・Situation: I can't read books or use my smartphone because I'm holding a strap with my right hand, so I have nothing to do but meditate. . .
            • ・It's not impossible, but it takes time. Things that change shape, such as peeling potatoes hard. Rather than fixing and assisting ingredients with the left hand, it is easier to control with the right hand. Therefore, he wanted to set the tools on his left hand.
            • ・Currently using a decorative prosthetic hand, it is difficult to use a strap with the left hand.
          • 【つり革】
            ◆負荷がかかった時に、肩を痛めない工夫
            ◆前腕部の自然な動きが出ることで肩への負荷を軽減
            ◆安定感

            【調理】
            ◆前腕内側部に固定(断端部に近い場所に固定)
            ◆角度や距離の調整が出来る
            ◆包丁・ナイフ・ボールやお茶碗を押さえる等、扱うものが重くても対応できるもの
              • ①包丁をレーザーに固定し、実際に玉ねぎを切ってみる

                ②包丁の角度や位置により、力の伝導が悪く、切れ味がイマイチ。

                ③実際に鶏肉を切ってみる
                  →思ったより力が入り、上手に切れる

                ④感想 
                  実際に進んでみて、右手で包丁を持って料理をする時と何も変わらない

                ⑤だったら・・・
                  ★ナイフとフォークでステーキを食べられるようになりたい
                  ★鞄を引っかけて持ってみたい

                  とのことで、ニードを見直し、再度検討開始。
              • 【ステーキを切るために左の義手にナイフを固定】
                ◆前腕内側部に固定
                ◆ナイフを入れるとグリップが浮いてしまうため、固定用のプレートをCADで作成。
              • ステーキを切るために、ナイフの固定方法、角度などを検討。

                お肉を切る際にナイフの先端の力が逃げてしまうため、逃げないように、プレートをCADで作成。

                力の入りやすい角度を調整。手関節部がない為、前腕部の直線上というよりは、真正面に開いた形で調整。

                【なぜできると良いのか?】
                  ・家でも外でステーキ、物おじせずに食べれる
                  ・自分のペースで食べられる

                【以前の作業の満足度】
                  ・作業前 → 「0」
                 

            • ガジェット ツールを使用して、新たなニードに対応していく。

              https://www.youtube.com/watch?v=Pjr_9Q-MWR0


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