Systems, apparatuses, and methods for medical devices

A medical device, comprising:

• a handle;
• a shaft having a first portion, having a rigid outer sheath, and a second portion, having a flexible outer sheath, wherein each of the first portion and the second portion of the shaft is configured to be inserted into a body lumen of a subject;
• and
• a rigid ram that is configured to be transitioned from a first configuration, in which a distal-most end of the ram is proximal of the second portion of the shaft, to a second configuration, in which the distal-most end of the ram is within the second portion of the shaft, wherein a proximal end of the ram protrudes from a proximal end of the handle, and wherein the ram is transitioned from the first configuration to the second configuration by moving the proximal end of the ram in a distal direction.

A medical method, the method comprising:

• inserting a distal end of a shaft of a medical device into a body lumen of a subject;
• navigating the distal end of the shaft to a treatment location;
• after navigating the distal end of the shaft to the treatment location, moving a ram distally from a first configuration to a second configuration, wherein a portion of shaft is bendable in the first configuration, and wherein the portion of the shaft is rigid in the second configuration;
• in the second configuration, extending a needle from a distal tip of the shaft;
• and
• delivering a vapor from the needle.