After Kidney Stone Laser Surgery. Now?

My Brother Had 18MM Kidney Stone Which Has Been Removed By A Laser Surgery, It's Been 10 Days Now Since The Surgery And Doctor Had Told Us That There's A Hole In His Back For Microscope, Which Has Been Closed By 1-2 Stitches, And Now It's Been 10 Days But Some Part Of Stitches Wire Is Outside, And We Did Surgery In A Different City So Can't Go For A Follow Back Visit, So My Questions Are :- 1) Will These Stitches Get Dissolved Or They Have To Be Removed? 2) Can The Patient Bath Without Covering The Stitches Or Not? And Will There Be Any Infection? 3) And Does The Patient Have To Follow A Proper Diet Even After The Surgery? And Can The Patient Eat Whatever He Want Cuz The Stone Has Been Removed Now? I Have Attached A Picture Of The Stitches Please Have A Look, Thak You !