Abstract: An interventional medical device includes an insertion tube extending between a proximal end and a distal end. The distal end configured to be inserted into internal tissues of a patient during a medical procedure. The insertion tube has an internal channel. The interventional medical device includes a tool received in the internal channel of the insertion tube. The tool has a tool body and a needle at an end of the tool body forms a tip of the tool. The tool body forms a tool channel. The interventional medical device includes a pressure sensor module received in the tool channel. The pressure sensor module includes a pressure sensor and a carrier holding the pressure sensor. The carrier is coupled to the tool body to position the pressure sensor in the tool channel proximate to the tip of the tool for measuring pressure of fluid of the internal tissues of the patient.