JPH0748268Y2 - Balloon catheter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in balloon catheters that adhere to medical devices.

(Prior Art) Depending on the purpose of medical treatment, a medical instrument, for example, a technique of fitting a balloon portion of a balloon catheter to the tip of an endoscope outer cylinder and inserting the balloon portion into a body cavity may be used. For example, in endoscopic sclerotherapy for esophageal varices, a sclerosing agent is injected into and around the esophageal varices by using a dedicated injection needle via the puncture channel of the anterior endoscope. When the aneurysm is to be eliminated, the balloon portion of the balloon catheter previously fitted to the distal end of the endoscope outer tube is inflated in order to temporarily fix the endoscope inside the esophagus. The forward-looking endoscope used for the therapy has conventionally not been provided with a channel for sucking blood other than the puncture channel to be discharged to the outside of the body, and when suctioning, the channel and the puncture needle are used. I was only able to suck a little through the gap.

(Problems to be Solved) As described above, when the puncture needle is being inserted into the puncture channel and blood or the like cannot be sufficiently sucked and discharged to the outside, it is difficult to secure a visual field necessary for the procedure. When cleaning the lumen of the esophagus, for example, there is a drawback that sufficient cleaning cannot be performed medically because only a small amount of water discharged from the air channel of the endoscope is used. An object of the present invention is to propose a catheter that can eliminate these obstacles.

(Technical Means for Solving the Problems) In order to solve the above problems, the conventional medical mounting balloon catheter is improved in that it is intended only to be fixed in the body cavity of the medical device. In order to achieve the purpose of temporarily fixing the medical device to a desired position in a body cavity as will be described later with reference to Examples, the balloon catheter according to the present invention complements the function of the medical device and provides a sufficient medical effect. It was configured to have the necessary functions.

Embodiment An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the outer cylinder in a stretched state, and FIG. 2 is a rear view of the tube and the branch pipe. Balloon part (1)
Is an outer cylinder (2) and an inner cylinder made of silicone rubber according to a size according to the outer diameter of a medical device (for example, an endoscope) that is fitted to this and temporarily fixed at a desired position in the body cavity. The outer cylinder (2) and the inner cylinder (3) are bonded to each other only at the both-end bonding portions (4), and the balloon portion (1) is formed between them. ) The tube (6) is attached parallel to the axis of (1) so that the tip portion thereof protrudes from the outer cylinder (2). A fixed ring (5) made of natural / synthetic fiber / thread, metal (for example, aluminum) or synthetic resin is attached to the outer cylinder (2) or inner cylinder (3) of the bonded portion. With this, it is possible to prevent the end of the balloon portion (1) from rolling up and hindering the procedure when it is attached to the medical device and inserted into the human body.

The tube (6) has a branch pipe (7) formed integrally or separately formed at the end thereof, and the opening (12) /
A main lumen (8) and a sub-lumen (9) communicating with (13) are provided, the main lumen (8) is opened to a suction hole (10) at the tip of the tube (6), and the sub-lumen (9) is a tube. A balloon hole (11) drilled so as to be located in the outer cylinder (2) and the inner cylinder (3) which are not bonded when the (6) is attached to the balloon part (1).
Is in communication with.

(Operation and effect of the present invention) The balloon catheter according to the present invention is operated by expanding or restoring the outer cylinder (2) by sending and discharging a fluid by a device connected to the opening (13) of the branch pipe. Not only does it temporarily fix an attached medical device, for example, an endoscope to the insertion site of the human body, but also suctions blood and the like from the suction hole (10) to the outside of the body by a device connected to the opening (12).・ Effect or prevent the obstruction of the field of view of the endoscope in the treatment of esophageal varices, etc., and generally facilitate the injection of medicinal solutions and the cleaning of body cavities. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a side view of the embodiment, and FIG. 2 is a back view of the tube and the branch pipe. 1 …… Balloon part 2 …… Outer cylinder 3 …… Inner cylinder 4 …… Adhesive part 6 …… Tube 7 …… Branch tube 8 …… Main lumen 9 …… Sub lumen 10 …… Suction hole 11 …… Balloon hole 12 …… Aperture 13 …… Aperture

Claims (1)

[Scope of utility model registration request] 1. A balloon part (1) fitted to a separate medical device having a two-layer structure of an outer cylinder (2) and an inner cylinder (3) formed in a substantially cylindrical shape, and an outer cylinder (parallel to the axis thereof). 2) and inner cylinder (3)
And a tube (6) attached so that the tip projects from the outer cylinder (2), and the outer cylinder (2) and the inner cylinder (3) are bonded at the bonding portions (4) at both ends. ,
The tube (6) is provided with a branch pipe (7) at one end and a main lumen (8) and a sub-lumen (9) which communicate with the openings (12) and (13) of the main lumen (8), respectively. Communicates with the suction hole (10) opened at the tip of the tube (6), and the sub-lumen (9) is connected to the balloon hole (11) opened between the unbonded outer cylinder (2) and inner cylinder (3). Balloon catheter characterized by being in communication