Leatham is best known for designing a new and improved version of the stethoscope, and for inventing the world's first endocardial cardiac pacemaker.
Leatham Waziwa kakhulu ukuklama inguqulo entsha futhi ngcono of the Lokusebenza Oluhlelekile, futhi owasungula endocardial pacemaker inhliziyo wokuqala emhlabeni.