Medical tube

Abstract

A medical tube provided with: a tube body (13) having a duct (13a) penetrating therethrough from the tip to the rear end thereof, the duct (13a) allowing the insertion section (3) of a cholangioscope (1) to be inserted therethrough; a side hole (13b) formed at a position between the tip and the rear end of the tube body (13) and interconnecting the outer peripheral side surface of the insertion section (3) and the duct (13a); and a hardness changing section (14) capable of changing, according to an operation by the operator, the hardness of at least that part of the tube body (13) which includes the side hole (13b).

Description

technical field [0001] The present invention relates to a medical tube for guiding medical equipment inserted into a body cavity. Background technique [0002] Generally, endoscopic duodenal papillotomy is used for non-invasive treatment of common bile duct stones. However, there are few cases of common bile duct stones complicated with intrahepatic stones, and sometimes it is necessary to undergo endoscopic duodenal papillatomy. The case of intrahepatic stones treated after papillotomy to remove common bile duct stones. Therefore, it is desired to be able to diagnose and treat intrahepatic calculi using oral cholangioscopy. [0003] However, in the case of an endoscope as a representative of medical equipment inserted from the stomach side, the outlet opening of the biliary tract is directed in the return direction with respect to the duodenum, so when you want to insert the endoscope into the biliary tract In the case of the endoscope, it is necessary to bend the front e...

AI Technical Summary

Problems solved by technology

[0009] When the periphery of the side hole 101a of the tubular member 101 is bent, in order to make the front end of the insertion portion 103 of the choledochoscope 102 point to the observation direction, the insertion portion 103 must be bent more. However, since the amount of bending of the insertion portion 103 is limited, There is a problem that it is difficult to accurately guide the tip of the insertion part 103 in the direction of observation, resulting in poor operability.

[0010] In order to cope with this situation, it is conceivable to increase the hardness around the side hole 101a of the tubular member 101 to make it difficult to bend. (For example, in the case of the duodenal bulb), it is difficult to bend the front end of the tubular member 101, which reduces the operability

[0011] Also, it is considered that after guiding the tubular member 101 to the duodenal papilla A etc. located in the viewing direction, for example, the wire-shaped hard member 52 disclosed in Japanese Patent Laying-Open No. 9-258441, or the Japanese The restricting body 10 disclosed in JP-A-11-76182 is inserted through a tubular member to increase rigidity. However, since the tubular member is bent in the body cavity, it is difficult to insert the rigid member or the restricting body orally into the near the tip of the tubular member

Images