JPH0717281Y2 - Balloon device for endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a balloon device attached to the distal end portion of an insertion portion when a laser beam is applied to a diseased part or the like in the body using an endoscope. It is a thing.

[Prior Art] As a treatment performed using an endoscope, a laser scalpel may be used to thermally coagulate a bleeding portion or perform bloodless surgery by the action of heat by a laser beam. In order to irradiate the affected part with this laser beam, a treatment tool insertion channel is used, a laser probe is inserted into this treatment tool insertion channel, and the emission end of the laser beam is seen from the tip of the insertion part to the affected part. Laser ablation toward.
During this cauterization, vapor, smoke, etc. are filled and the laser beam is scattered, resulting in uneven irradiation and carbides adhering to the laser emission end. It must be configured so that it is not exposed. Therefore, before inserting the insertion portion of the endoscope into the body, a balloon made of a transparent flexible bag such as latex is attached to the tip portion of the insertion portion in advance.

Further, the balloon is also used to secure a sufficient observation visual field in the stenotic lumen tube. That is, if the insertion portion is positioned inside the body cavity tube and the balloon is inflated, the body cavity tube is expanded and the observation window provided at the distal end of the insertion section can be separated from the body cavity wall. .

Thus, the balloon according to the prior art is designed to be directly attached to the tip of the insertion part, and in a state where the insertion part has been sent to a predetermined part in the body, water and air are supplied through the air / water supply pipe. Such a fluid has been pressure-fed to inflate the balloon.

[Problems to be Solved by the Invention] By the way, when a fluid is supplied from an air / water supply pipe to inflate a balloon, it takes a long time to inflate the balloon by a necessary amount. In addition, there is a problem that it is difficult to control the amount of bulging, and if the fluid supplied in the balloon is retained, the temperature of the fluid in the balloon rises. , The heat generated when cauterizing the wall of the body cavity is a narrow part and concentrates on the body skin part, so this part is carbonized immediately, and there is a problem that it is not possible to cauterize deep inside the body skin is there.

The present invention has been made in view of the above points, and an object of the present invention is to provide a balloon device for an endoscope capable of smoothly circulating the fluid supplied into the balloon. .

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention inserts a laser probe through a processing tool insertion channel provided in an insertion portion of an endoscope, and outputs a laser beam from the laser probe. For irradiating a diseased part or the like, and a ring-shaped connecting member is detachably attached to the distal end hard portion at the tip of the insertion portion, and a transparent plate is attached to the ring portion of the connecting member. At the same time, a balloon body made of a transparent flexible bag is attached to the outer surface of the balloon body, the balloon body, and a connecting member,
A closed chamber is formed by the transparent plate, and a fluid supply port and a fluid discharge port are opened in the closed chamber in order to perfuse the fluid in the closed chamber, and the laser beam emitted from the laser probe is emitted from the closed chamber. It is characterized in that the light is emitted through the light guide section.

[Operation] By adopting such a configuration, for example, when a laser probe is used, the balloon device is previously attached to the distal end portion of the insertion portion of the endoscope. Also, a fluid supply port is connected to a fluid supply pipe for supplying a fluid for inflating the balloon body, and this fluid supply pipe is
It is made to extend along the insertion part toward the main body operation part side. On the other hand, the fluid discharge port is connected to the fluid discharge pipe by extending along the insertion portion as in the case of the fluid supply pipe described above, or a check valve is attached to direct the fluid from the inside of the balloon body to the outside. Fluid is allowed to drain, but backflow is prevented.

In this state, the insertion portion is inserted into the body and guided to the site to be treated, and if the fluid is supplied from the fluid supply pipe, the fluid is supplied from the fluid supply port into the balloon main body, and the balloon main body Will be able to swell. Then, when the balloon body bulges to some extent, the fluid is discharged from the fluid discharge port. Therefore, by inserting the laser probe into the treatment instrument insertion channel and emitting the laser beam from the front side of the transparent plate, the closed chamber formed by the balloon body, the connecting member, and the transparent plate becomes the light guide section. Then, the affected area is irradiated with the laser beam through the light guide section. Then, by continuing the supply of the fluid during the treatment using the laser, the perfusion of the fluid is performed inside the balloon body, and the body cavity wall is brought to an appropriate temperature state for laser ablation. You will be able to hold. Further, by connecting the fluid discharge pipe to the fluid discharge port and controlling the discharge amount of the fluid in this fluid discharge pipe, the bulging amount of the balloon body can be controlled.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.

First, FIG. 1 shows a cross section of a state in which a balloon device is attached to a distal end portion of an insertion portion of an endoscope, FIG. 2 shows its appearance, and FIG. 3 shows an explanatory view of a use state.

In the figure, reference numeral 1 denotes an insertion portion of the endoscope, and the insertion portion 1
The distal end hard portion 1a is provided with a treatment tool insertion channel 2 together with an illumination window, an observation window and the like. Also, this tip hard part 1a
A screw portion 3 is provided on the outer peripheral portion of the. The balloon device 10 is adapted to be screwed onto the threaded portion 3 of the distal end hard portion 1a.

Here, the balloon device 10 has a connecting ring 11 provided on its inner surface with a threaded portion 11a to be screwed into the threaded portion 3 of the distal end hard portion 1a, and the transparent glass plate 12 is provided on the front surface of the connecting ring 11. The transparent glass plate (12) is kept airtight around the mounting portion by filling a sealing material or the like. A groove 13 is formed on the outer peripheral side of the connecting ring 11, and the groove 13 has an end portion of the balloon body 14 formed of a transparent flexible bag such as latex. It is supposed to be worn. This balloon body
A rubber ring 15 is fitted in the groove 13 to fix the groove 14.

With such a configuration, a space between the balloon body 14 and the portion of the connecting ring 11 where the transparent glass plate 12 is attached becomes a sealed space, and the balloon body 14 is always contracted, as shown in FIG. The state is shown by an imaginary line, and when a fluid such as water or air is supplied into the balloon main body 14, it is inflated as shown by a solid line in the figure.

Here, a fluid such as water can be circulated in the balloon body 14. A fluid supply port 16 and a fluid discharge port 17 are formed in the connecting ring 11 to enable the circulation of the fluid. Then, connecting pipes 18 and 19 are connected to the fluid supply port 16 and the fluid discharge port 17, respectively.
Are connected, and a fluid supply tube 20 connected to a water pump and a fluid discharge tube 21 connected to a tank are connected to these connection pipes 18 and 19, respectively. Furthermore, in order to bundle these tubes 20 and 21, the insertion part 1
An appropriate number of bundling tools 22 are provided at an intermediate position of.

The present embodiment is configured as described above, and when inserting the insertion portion 1 of the endoscope into the body of a patient, first, the balloon device 10 in which the balloon body 14 is attached to the connecting ring 11 is used.
Is attached to the tip hard portion 1a. In this state, the front surface of the tip rigid portion 1a is provided with the transparent glass plate 12 and the balloon body 14, but since these are both transparent members, they are provided on the tip surface of the tip rigid portion 1a. The observation field of view through the observation window is not obstructed.

Thus, in order to bulge the balloon body 14 in order to secure an observation field of view in a narrow body cavity tube, water is supplied from the fluid supply tube 20 to the fluid supply port 16 via the connecting pipe 18. As a result, the body cavity tube is expanded and a wide observation visual field can be obtained. Here, since the fluid supply tube 20 can be formed to have a diameter larger than that of the air / water supply pipe, the fluid can be supplied into the balloon body 14 quickly and efficiently. When the balloon body 14 is inflated to secure this observation field of view, it is not always necessary to circulate the fluid, and therefore the fluid discharge tube 21 may be closed.

On the other hand, the bulging of the balloon body 14 is also performed when the laser probe 23 inserted through the treatment instrument insertion channel 2 is used to perform thermal coagulation or bloodless surgery of the affected area.
In this case, in order to perfuse the water supplied into the balloon body 14, the balloon body is passed through the fluid supply tube 20.
The fluid is supplied into the balloon body 14 and the fluid in the balloon body 14 is discharged through the fluid discharge tube 21. As a result, the fluid in the balloon body 14 can hold the portion of the body cavity wall where laser ablation should be performed in an optimal state for laser ablation. Therefore, in this state, the emitting end 23a of the laser probe 23 is connected to the transparent glass 12 of the balloon device 10.
To a position in contact with or close to. Thus, if the laser probe 23 directly contacts the balloon body 14, the balloon body 14 made of a thin flexible bag will be damaged, but the transparent glass 12 will be present inside the balloon body 14. Since the laser probe 23 is arranged, even if the laser probe 23 is inadvertently projected from the treatment instrument insertion channel 2, the balloon body 14 is protected without directly contacting the balloon body 14. Here, when the laser beam B is emitted from the emission end 23a of the laser probe 23 toward the affected area, the inside of the balloon body 14 functions as a light guide portion, and furthermore, the perfusion is performed inside the light guide portion. The temperature of the fluid in the balloon body 14 is controlled by the irrigation, which absorbs and dissipates the heat during cauterization and prevents the vicinity of the surface of the body cavity wall from being carbonized early. , Cauterization can be performed over a wide range up to deeper areas. As a result, heat coagulation of the affected area,
Operations such as bloodless surgery can be efficiently performed.

As shown by the phantom line in the drawing, if the opening 24 is provided so as to be located closer to the screw portion 11a than the position where the transparent glass plate 12 is provided on the side portion of the connecting ring 11, it is possible to supply air or water. And so on. Further, it is not always necessary to connect the fluid discharge tube 21 to the fluid discharge port 17, and for example, the fluid in the balloon body 14 is discharged to the outside only when the inside of the balloon body 14 is in a predetermined pressure state. A check valve capable of performing the above may be provided. Further, the connection of the balloon device 10 to the insertion portion 1 is not limited to the screw connection, but may be a bayonet mechanism, a snap action mechanism, or the like.

[Advantages of the Invention] As described above, the balloon device according to the present invention is detachably attached to the distal end hard portion of the insertion portion of the endoscope and functions as a light guide portion of the laser beam.
In this balloon device, a transparent plate is attached to the ring portion of the connecting member, and a balloon body made of a transparent flexible bag is attached to the outer surface of the connecting member to form between the balloon body and the transparent plate. Since the fluid supply port and the fluid discharge port for supplying and discharging the fluid are provided in the closed chamber, the fluid supply is provided to the light guide part of the laser beam that is formed when performing treatment using a laser knife or the like. It becomes possible to manage the temperature of the light guide section by performing appropriate perfusion without retaining the fluid supplied from the mouth, and during treatment with a laser knife, absorption and dispersion of heat is achieved, This is extremely advantageous because it can prevent early carbonization and transpiration of the body cavity wall, can obtain an appropriate cauterization heat to the deep part under the body, and can cauterize it to a wide range and deeper part. Not just a treatment tool The transparent plate directly faces the communication channel, and the balloon body made of a flexible bag of a fragile thin film is arranged in front of this transparent plate. Therefore, the laser probe was projected from the treatment instrument insertion channel. Sometimes, there is no inconvenience such as accidentally damaging the balloon body with the tip of the laser probe, and more efficient than when supplying fluid into the balloon body via an air / water supply pipe. Therefore, it is possible to supply the fluid to the body and to control the bulging amount of the balloon body.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a sectional view showing a state in which a balloon device is attached to the distal end portion of the insertion portion of an endoscope, FIG. 2 is its external view, and FIG. It is explanatory drawing of a state. 1: insertion part, 1a: hard tip part, 2: treatment tool insertion channel,
3: screw part, 10: balloon device, 11: connecting ring, 11a: screw part, 12: transparent glass plate, 13: concave groove, 14: balloon body, 15:
Rubber ring, 16: fluid supply port, 17: fluid discharge port, 18 and 19: connecting pipe, 20: fluid supply tube, 21: fluid discharge tube, 23: laser probe, 23a: emission end.

Claims (1)

[Scope of utility model registration request] 1. A laser probe is inserted through a treatment tool insertion channel provided in an insertion portion of an endoscope, and a laser beam is irradiated from the laser probe to an affected area or the like, at the tip of the insertion portion. A ring-shaped connecting member is detachably attached to the hard tip portion, a transparent plate is attached to the ring portion of the connecting member, and a balloon body made of a transparent flexible bag is attached to the outer surface thereof. A closed chamber is formed by the balloon body, the connecting member, and the transparent plate, and a fluid supply port and a fluid discharge port are opened in the sealed chamber for perfusing a fluid in the sealed chamber. A balloon device for an endoscope, wherein the emitted laser beam is configured to be radiated through a light guide portion formed of the closed chamber.