Researchers will compare the time spent in the target glucose range of 70-180 mg/mL during the last 12 weeks of the study between the patients randomised to the Open Loop group and those randomised to the Closed Loop group. conditions: Type 1 Diabetes studyType: OBSERVATIONAL observationalModel: COHORT timePerspective: PROSPECTIVE count: 160 type: ESTIMATED name: Insulin Management System in Manual mode of operation name: Insulin Management System in Automatic mode of operation measure: Superiority of the algorithm on Time In Range (TIR) between the 2 randomised groups measure: Evolution of TIR measure: Evolution of coefficient of glycemic variation measure: Superiority in Glycated Haemoglobin (HbA1c) improvement measure: Evolution of Time spent Above Range (TAR) measure: Evolution of Time spent Below Range (TBR) measure: Body Mass Index change measure: Glucose sensor measurement change measure: Percentage of patients with TIR > 70% measure: Percentage of patients with TIR > 70% and TBR < 4%, and with TIR > 70% and TBR < 1% measure: Evolution of glucose management indicator (GMI) measure: Evolution of dosage of insulin measure: Time of device usage and time in automatic mode of insulin delivery (hybrid closed loop) measure: Evolution of Self-administered Questionnaires scores measure: Evolution of Diabetes Treatment Satisfaction score measure: Safety Events measure: Extension phase: Assessment of Automatic Meal Management function in Hybrid Closed Loop group on TIR measure: Extension phase: Assessment of Automatic Meal Management function in Hybrid Closed Loop group on glucose sensor measurements measure: Extension phase: Assessment of Automatic Meal Management function in Hybrid Closed Loop group on TAR measure: Extension phase: Assessment of Automatic Meal Management function in Hybrid Closed Loop group on TBR measure: Extension phase: Assessment of Automatic Meal Management function in Hybrid Closed Loop group on GMI measure: Extension phase: Assessment of Automatic Meal Management function in Hybrid Closed Loop group on dosage of insulin measure: Extension phase: Assessment of Automatic Meal Management function in Hybrid Closed Loop group on Self-administered Questionnaires scores sex: ALL minimumAge: 7 Years maximumAge: 75 Years stdAges: CHILD stdAges: ADULT stdAges: OLDER_ADULT facility: CHU Angers city: Angers country: France name: Regis COUTANT role: CONTACT name: Regis COUTANT role: PRINCIPAL_INVESTIGATOR lat: 47.46667 lon: -0.55 facility: CHU Besançon city: Besançon country: France name: Sophie BOROT role: CONTACT name: Sophie BOROT role: PRINCIPAL_INVESTIGATOR lat: 47.24878 lon: 6.01815 facility: CHU Bordeaux city: Bordeaux country: France lat: 44.84044 lon: -0.5805 facility: CHU Caen city: Caen country: France name: Michael JOUBERT role: CONTACT name: Michael JOUBERT role: PRINCIPAL_INVESTIGATOR lat: 49.18585 lon: -0.35912 facility: Centre Hospitalier Sud-Francilien city: Corbeil-Essonnes country: France name: Freddy PENFORNIS role: CONTACT name: Freddy PENFORNIS role: PRINCIPAL_INVESTIGATOR name: Thanh-Lan DANG DUY role: PRINCIPAL_INVESTIGATOR lat: 48.60603 lon: 2.48757 facility: Centre Hospitalier de Gonesse city: Gonesse country: France name: Jennifer ALLAIN role: CONTACT name: Jennifer ALLAIN role: PRINCIPAL_INVESTIGATOR lat: 48.98693 lon: 2.44892 facility: Centre Hospitalier Saint-Louis city: La Rochelle country: France name: Didier GOUET role: CONTACT name: Didier GOUET role: PRINCIPAL_INVESTIGATOR lat: 46.16667 lon: -1.15 facility: Hôpital Hôtel-Dieu city: Le Creusot country: France name: Sylvaine CLAVEL role: CONTACT name: Sylvaine CLAVEL role: PRINCIPAL_INVESTIGATOR lat: 46.80714 lon: 4.41632 facility: Hospices Civils de Lyon city: Lyon country: France lat: 45.74848 lon: 4.84669 facility: Hôpital Européen city: Marseille country: France name: Denis RACCAH role: CONTACT name: Denis RACCAH role: PRINCIPAL_INVESTIGATOR lat: 43.29551 lon: 5.38958 facility: Hôpital La Timone city: Marseille country: France name: Rachel REYNAUD role: CONTACT name: Rachel REYNAUD role: PRINCIPAL_INVESTIGATOR lat: 43.29551 lon: 5.38958 facility: CHU Montpellier city: Montpellier country: France name: Fabienne DALLA VALE role: CONTACT name: Fabienne DALLA VALE role: PRINCIPAL_INVESTIGATOR lat: 43.61092 lon: 3.87723 facility: CHU Nantes city: Nantes country: France lat: 47.21725 lon: -1.55336 facility: Hôpital Lariboisière city: Paris country: France name: Jean-Pierre RIVELINE role: CONTACT name: Jean-Pierre RIVELINE role: PRINCIPAL_INVESTIGATOR lat: 48.85341 lon: 2.3488 facility: Hôpital Necker city: Paris country: France name: Jacques BELTRAND role: CONTACT name: Jacques BELTRAND role: PRINCIPAL_INVESTIGATOR lat: 48.85341 lon: 2.3488 facility: Hôpital Robert Debré city: Paris country: France name: Elise BISMUTH role: CONTACT name: Elise BISMUTH role: PRINCIPAL_INVESTIGATOR lat: 48.85341 lon: 2.3488 facility: Hôpital Rangueil city: Toulouse country: France name: Vincent MELKI role: CONTACT name: Vincent MELKI role: PRINCIPAL_INVESTIGATOR lat: 43.60426 lon: 1.44367 hasResults: False