An ablation probe (100, 200), comprising: an applicator arranged to apply radiation to heat surrounding tissue; a feeding cable arranged to supply electromagnetic energy to the applicator; a coolant flow path (106, 108) forming a coolant supply circuit; a tubular member housing at least part of the feeding cable; and a coupling body, the coupling body comprising: a cavity in which the applicator is at least partly encapsulated; a coupling interface at which the coupling body is coupled to the tubular member; and a pointed distal tip adapted for piercing tissue, the coupling body being adapted to structurally couple the applicator and the tubular member together, wherein the coupling body is formed from nylon or glass reinforced nylon, and wherein: i) the tubular member is formed at least partly from a polymeric material; and/or ii) the ablation probe further comprises a deformable member (110, 210) surrounding at least part of the tubular member, the deformable member (110, 210) being arranged to move between an insertion configuration and a deployed configuration, and wherein a part of the coolant path (106, 108) is defined between the deformable member (110, 210) and the tubular member when the deformable member is in the deployed configuration, and wherein the coupling body comprises a coupling interface at which the coupling body is coupled to the deformable member, the deformable member (110, 210) being formed at least partly from nylon. an applicator arranged to apply radiation to heat surrounding tissue; a feeding cable arranged to supply electromagnetic energy to the applicator; a coolant flow path (106, 108) forming a coolant supply circuit; a tubular member housing at least part of the feeding cable; and a coupling body, the coupling body comprising: a cavity in which the applicator is at least partly encapsulated; a coupling interface at which the coupling body is coupled to the tubular member; and a pointed distal tip adapted for piercing tissue, the coupling body being adapted to structurally couple the applicator and the tubular member together, wherein the coupling body is formed from nylon or glass reinforced nylon, and wherein: i) the tubular member is formed at least partly from a polymeric material; and/or ii) the ablation probe further comprises a deformable member (110, 210) surrounding at least part of the tubular member, the deformable member (110, 210) being arranged to move between an insertion configuration and a deployed configuration, and wherein a part of the coolant path (106, 108) is defined between the deformable member (110, 210) and the tubular member when the deformable member is in the deployed configuration, and wherein the coupling body comprises a coupling interface at which the coupling body is coupled to the deformable member, the deformable member (110, 210) being formed at least partly from nylon. a cavity in which the applicator is at least partly encapsulated; a coupling interface at which the coupling body is coupled to the tubular member; and a pointed distal tip adapted for piercing tissue, the coupling body being adapted to structurally couple the applicator and the tubular member together, wherein the coupling body is formed from nylon or glass reinforced nylon, and wherein: i) the tubular member is formed at least partly from a polymeric material; and/or ii) the ablation probe further comprises a deformable member (110, 210) surrounding at least part of the tubular member, the deformable member (110, 210) being arranged to move between an insertion configuration and a deployed configuration, and wherein a part of the coolant path (106, 108) is defined between the deformable member (110, 210) and the tubular member when the deformable member is in the deployed configuration, and wherein the coupling body comprises a coupling interface at which the coupling body is coupled to the deformable member, the deformable member (110, 210) being formed at least partly from nylon. i) the tubular member is formed at least partly from a polymeric material; and/or ii) the ablation probe further comprises a deformable member (110, 210) surrounding at least part of the tubular member, the deformable member (110, 210) being arranged to move between an insertion configuration and a deployed configuration, and wherein a part of the coolant path (106, 108) is defined between the deformable member (110, 210) and the tubular member when the deformable member is in the deployed configuration, and wherein the coupling body comprises a coupling interface at which the coupling body is coupled to the deformable member, the deformable member (110, 210) being formed at least partly from nylon.