Endoscope sheath apparatuses

An endoscope sheath device configured to prevent contamination of an endoscope, the endoscope sheath device comprising:

• a tubular external sheath having a lumen, the tubular external sheath configured to form a fluid-impermeable external contamination barrier when the endoscope is within the lumen of the tubular external sheath, wherein the tubular external sheath is configured to be transitioned between a flexible configuration and a rigid configuration by an application or release of pressure;
• a cap sealingly coupled to a distal end of the tubular external sheath, wherein the cap comprises an engagement region that is configured to secure to a distal end of the endoscope, wherein the engagement region is configured to mate with the distal end of the endoscope when compressed from an oval resting cross-sectional configuration into a substantially circular mating cross-sectional configuration;
• and
• one or more internal sheaths each comprising an elongate flexible body having one or more internal lumens, each of the one or more internal sheaths extending within the lumen of the tubular external sheath, wherein each of the one or more internal sheaths are configured to pass through a lumen of the endoscope to form a fluid-impermeable internal contamination barrier, wherein each of the one or more internal sheaths is sealingly coupled to the cap so that the one or more internal lumens are open through the cap.

An endoscope sheath device configured to prevent contamination of an endoscope, the endoscope sheath device comprising:

• a tubular external sheath configured to fit over the endoscope, wherein the tubular external sheath has a lumen and is configured to be transitioned between a flexible configuration and a rigid configuration by an application or release of pressure;
• a cap sealingly coupled to a distal end of the tubular external sheath, the cap comprising an engagement region configured to secure the cap to a distal end of the endoscope, wherein the engagement region is configured to mate with the distal end of the endoscope when compressed from an oval resting cross-sectional configuration into a substantially circular mating cross-sectional configuration;
• one or more internal sheaths each comprising an elongate flexible body extending within the lumen of the tubular external sheath and configured to fit within a lumen extending through the endoscope, wherein each of the one or more internal sheaths has one or more internal lumens, further wherein each of the one or more internal sheaths is sealingly coupled to the cap so that the one or more internal lumens is open through the cap;
• and
• a sealing region at a proximal end of the one or more internal sheaths that is configured to be sealed after use to prevent contamination during removal of the one or more internal sheaths from within the lumen extending through the endoscope.

An endoscope sheath device configured to prevent contamination of an endoscope, the endoscope sheath device comprising:

• an external sheath having a lumen therethrough that is configured to be transitioned between a flexible configuration and a rigid configuration;
• a cap sealingly coupled to a distal end of the external sheath, the cap comprising an engagement region configured to secure the cap to a distal end of the endoscope, wherein the engagement region is configured to mate with the distal end of the endoscope when compressed from an oval resting cross-sectional configuration into a substantially circular mating cross-sectional configuration;
• and
• an internal sheath comprising a catheter extending within the lumen of the external sheath, wherein the internal sheath is sealingly coupled to the cap so that a lumen of the catheter is open through the cap, further wherein the internal sheath is configured to extend through a lumen of the endoscope;
• and
• a sealing region at a proximal end region of the internal sheath that is configured to heat sealed to close off the lumen of the catheter after use to prevent contamination during removal of the internal sheath from within the lumen of the endoscope.