diff --git a/src/main/kotlin/entity/healthcareuser/Patient.kt b/src/main/kotlin/entity/healthcareuser/Patient.kt
new file mode 100644
index 0000000..9205e45
--- /dev/null
+++ b/src/main/kotlin/entity/healthcareuser/Patient.kt
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2023. Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package entity.healthcareuser
+
+/**
+ * Id of [HealthcareUser] under a surgery.
+ * @param[value] the id.
+ */
+data class PatientID(val value: String) {
+    init {
+        // Constructor validation: The id must not be empty
+        require(this.value.isNotEmpty())
+    }
+}
+
+/**
+ * [VitalSign]s of a patient.
+ * - [heartBeat]
+ * - [diastolicBloodPressure]
+ * - [systolicBloodPressure]
+ * - [respiratoryRate]
+ * - [saturationPercentage]
+ * - [bodyTemperature]
+ */
+data class PatientVitalSigns(
+    val heartBeat: VitalSign.HeartBeat? = null,
+    val diastolicBloodPressure: VitalSign.DiastolicBloodPressure? = null,
+    val systolicBloodPressure: VitalSign.SystolicBloodPressure? = null,
+    val respiratoryRate: VitalSign.RespiratoryRate? = null,
+    val saturationPercentage: VitalSign.SaturationPercentage? = null,
+    val bodyTemperature: VitalSign.BodyTemperature? = null,
+)
diff --git a/src/main/kotlin/entity/healthcareuser/PatientID.kt b/src/main/kotlin/entity/healthcareuser/PatientID.kt
deleted file mode 100644
index 1fcb517..0000000
--- a/src/main/kotlin/entity/healthcareuser/PatientID.kt
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Copyright (c) 2023. Smart Operating Block
- *
- * Use of this source code is governed by an MIT-style
- * license that can be found in the LICENSE file or at
- * https://opensource.org/licenses/MIT.
- */
-
-package entity.healthcareuser
-
-/**
- * Id of [HealthcareUser] under a surgery.
- * @param[value] the id.
- */
-data class PatientID(val value: String) {
-    init {
-        // Constructor validation: The id must not be empty
-        require(this.value.isNotEmpty())
-    }
-}