WO2014054771A1 - Coupling tool and guide instrument for body cavity insertion tool, and body cavity illuminating device - Google Patents

Description

Coupling tool, guide device for insertion tool in body cavity, and illumination device for body cavity

The present invention relates to a connecting tool, a guide device for an insertion tool in a body cavity, and an illumination device for a body cavity, and more particularly to a technique for stably arranging an insertion tool in a body cavity inserted in a body cavity.

In recent years, endoscopic surgery using a rigid endoscope (rigid endoscope) such as a laparoscope has been widely performed because the invasiveness to patients is small compared to surgical operations for performing abdominal surgery, thoracotomy, etc. . For example, in laparoscopic surgery, a cylindrical trocar is inserted into several positions on the patient's abdomen, and an endoscope (laparoscope) or a treatment instrument is inserted into the abdominal cavity through this trocar, and the monitor is used for internal surgery. Treatment is performed using a treatment tool while observing an endoscopic image.

Recently, single-hole laparoscopic surgery (SPS), in which a single hole is made in the umbilicus and laparoscopic surgery is performed, has been rapidly spreading. In this single-hole laparoscopic surgery, the post-surgical scar is only one place on the umbilical portion, so it is not noticeable and is cosmetically superior.

However, in single-hole laparoscopic surgery, since there is only one opening (insertion hole) formed in the body wall to access the body cavity, the endoscope and the treatment tool interfere inside and outside the body cavity. Easy to operate and easy to cramp. In addition, when the endoscope and the treatment tool interfere with each other, the endoscope may not be positioned conveniently for observation, which may hinder observation and treatment of the treatment target site.

Against this background, there is an increasing demand for reducing the diameter of the insertion portion of the endoscope. If it is possible to reduce the diameter of the insertion portion of the endoscope, even if an opening for the endoscope is formed in a portion other than the umbilicus, the opening size is reduced and the postoperative scar is made inconspicuous. be able to. In addition, problems on the operation surface and the observation surface can be eliminated as compared with the case of accessing the body cavity from one opening.

Here, in general, the endoscope has a function for illuminating the inside of the body cavity as well as a function for observing the inside of the body cavity. In other words, a light guide for transmitting illumination light from the light source device is inserted through the insertion portion of the endoscope, and the illumination light emitted from the emission end is irradiated into the body cavity through the illumination window. It has come to be. For this reason, if the insertion portion of the endoscope is made too thin, the occupied space for inserting and arranging the light guide is insufficient, and the brightness of the illumination light is insufficient.

On the other hand, Patent Document 1 includes an endoscope for observing the inside of a body cavity, and an illumination tool (illumination probe) that is configured separately from the endoscope and illuminates the inside of the body cavity. A system is disclosed. According to this system, even when the brightness of the illumination light emitted from the endoscope is insufficient, the desired brightness can be secured by the illumination light emitted from the illumination tool. Moreover, since illumination light can be irradiated to an observation position from various directions, it becomes easier to observe the observation position.

JP-A-10-137184

By the way, in the system disclosed in Patent Document 1, when the illuminator is inserted in a direction perpendicular to the body skin (outer surface of the body wall), the distance from the observation target portion is shortened and illumination light can be irradiated. Range becomes narrower. In this case, the illuminator must be inserted from a position close to the observation target site, and the position where the illuminator can be inserted is limited.

For this reason, it is desirable that the illuminator is inserted in an oblique direction with respect to the body skin. However, when the illuminator is inserted into the body cavity in such a state, the illuminator should be stably disposed. There is a problem that can not be. That is, if the lighting tool inserted into the body cavity is not sufficiently fixed to the body wall, for example, if the light guide cable connected to the lighting tool swings even a little, the lighting tool also swings according to the swing. For this reason, the illumination in the body cavity becomes unstable, and there is a problem that observation and treatment in the body cavity are difficult to perform. Moreover, there is a possibility that the organ is damaged by the tip of the lighting device.

Patent Document 1 does not pay attention to such a problem, and does not propose any method for stably arranging a lighting device inserted into a body cavity.

The present invention has been made in view of such circumstances, and a connecting tool capable of stably arranging a body cavity insertion tool inserted into a body cavity, a guide tool for the body cavity insertion tool, and a body cavity illumination device. The purpose is to provide.

In order to achieve the above object, a connector according to one aspect of the present invention includes a first mantle tube having an insertion passage for guiding a first body cavity insertion tool into a body cavity, and a second body cavity insertion tool. A connecting tool for connecting a second mantle tube having an insertion passage for guiding the body into the body cavity, comprising a connecting member for connecting the first and second mantle tubes, A first holding part for holding and fixing the outer tube and a second holding part for holding and fixing the second outer tube are provided, and the first and second holding parts are the first and second outer tubes. The first and second mantle tubes are each held and fixed in a state where the relative positional relationship between the tubes is constant.

In a preferred aspect of the present invention, the first and second holding sections hold and fix the first and second outer tubes in a state where the axial directions of the first and second outer tubes are parallel to each other.

In a preferred aspect of the present invention, the first and second holding portions are inclined in such a manner that the axial directions of the first and second outer tubes are away from each other toward the distal end side. Each of the two outer tubes is held and fixed.

Further, in a preferred aspect of the present invention, the connecting body is provided with a stepped portion composed of a plurality of bent portions.

In a preferred aspect of the present invention, the connecting body is provided with an angle adjusting mechanism capable of adjusting a relative angle between the axial direction of the first outer tube and the axial direction of the second outer tube.

According to a preferred aspect of the present invention, the connector includes a first outer tube, a second outer tube, and a third outer tube having an insertion passage for guiding the third body cavity insertion device into the body cavity. The connecting body is provided with a third holding portion for holding the third mantle tube, and the third holding portion has a direction in which the first and second holding portions are arranged. Are arranged in different directions.

In a preferred aspect of the present invention, the first and second body cavity insertion tools are lighting tools for illuminating the body cavity.

In order to achieve the above object, a guide device for an intra-body-cavity insertion tool according to another aspect of the present invention includes a first outer tube having an insertion passage for guiding the first intra-body-cavity insertion tool into the body cavity. And a second outer tube having an insertion passage for guiding the second insertion tool in the body cavity into the body cavity, and a connecting body for connecting the first and second outer tubes, the connecting body including the first outer tube. A first holding part for holding and fixing the outer tube and a second holding part for holding and fixing the second outer tube are provided, and the first and second holding parts are the first and second outer tubes. The first and second mantle tubes are each held and fixed in a state where the relative positional relationship between the tubes is constant.

In order to achieve the above object, a body cavity lighting device according to still another aspect of the present invention includes a first and second lighting tools for illuminating the body cavity, and the first lighting tool in the body cavity. A first mantle tube having an insertion passage for guiding the second illuminator, a second mantle tube having an insertion passage for guiding the second lighting device into the body cavity, and a coupling body for connecting the first and second mantle tubes. The connecting body is provided with a first holding portion for holding and fixing the first mantle tube and a second holding portion for holding and fixing the second mantle tube, and the first and second The holding portion holds and fixes the first and second outer tubes in a state where the relative positional relationship between the first and second outer tubes is fixed.

According to the present invention, the first and second mantle tubes are connected in a state where the relative positional relationship between the first and second mantle tubes is fixed by the connecting body, so that the first and second mantle tubes are inserted into the body cavity. The resistance that the first and second mantles receive from the body wall can be increased. For this reason, the first and second outer tubes are securely fixed to the body wall. Accordingly, the first and second body cavity insertion tools guided into the body cavity by the first and second mantle tubes can be stably disposed in the body cavity.

Overall configuration diagram showing an embodiment of a medical observation system Schematic showing a configuration example of an endoscope Schematic showing a configuration example of a needle light External perspective view showing a configuration example of a needle light guide device 4 is an exploded perspective view of the needle light guide device shown in FIG. Explanatory drawing which showed a mode that the guide instrument for needle lights was inserted in the body cavity Explanatory drawing which showed a mode that the needle light was guide | introduced into the body cavity through the guide instrument for needle lights Schematic showing a first modification of the needle light guide device The figure which showed the use condition of the guide instrument for needle lights which concerns on a 1st modification. Schematic showing a second modification of the needle light guide device The figure which showed the use condition of the guide instrument for needle lights which concerns on a 2nd modification. Schematic showing a third modification of the needle light guide device The figure which showed the use condition of the guide instrument for needle lights which concerns on a 3rd modification. Schematic showing a fourth modification of the needle light guide device The top view which showed the coupling body which concerns on a 3rd modification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Medical observation system]
FIG. 1 is an overall configuration diagram showing an embodiment of a medical observation system. As shown in FIG. 1, a medical observation system 10 according to the present embodiment includes an endoscope 100 for observing a portion to be observed in a body cavity, and a needle light (illumination) that irradiates illumination light into the body cavity of the subject. G) 200A, 200B, a light source device 400 that supplies illumination light to the needle lights 200A, 200B, and a processor device 500 that generates an endoscopic image. The processor device 500 is connected to a monitor 600 for displaying an endoscopic image.

In this embodiment, the needle lights 200A and 200B are inserted into the body cavity via a needle light guide device 300 (corresponding to the “intra-body cavity insertion tool guide device” of the present invention) described later.

[Endoscope]
FIG. 2 is a schematic diagram illustrating a configuration example of the endoscope 100. An endoscope (electronic endoscope) 100 shown in FIG. 2 includes a rigid insertion portion 102 to be inserted into a body cavity of a subject, a grip portion 104 provided at the rear end of the insertion portion 102, and a grip portion 104. And a signal cable 122 extending from the rear end. A connector 124 that is detachably connected to the processor device 500 is provided at the end of the signal cable 122.

The observation window 110 for taking in the image light of the subject is attached to the tip of the insertion unit 102. An objective optical system 112 and a solid-state image sensor 120 (CMOS sensor, CCD sensor, etc.) are disposed behind the observation window 110. Subject light that has passed through the observation window 110 and the objective optical system 112 is incident on the imaging surface (light receiving surface) of the solid-state imaging device 120. The solid-state imaging device 120 photoelectrically converts incident subject light to convert it into an electrical signal (imaging signal) and output it. The electrical signal output from the solid-state imaging device 120 is input to the processor device 500 via the signal cable 122 and the connector 124.

As shown in FIG. 2, the processor device 500 includes a CPU 502, a DSP 504, a DIP 506, and a display control circuit 508. The CPU 502 controls the overall operation of the processor device 500.

The DSP 504 performs various signal processing such as color separation, color interpolation, gain correction, white balance adjustment, and gamma correction on the electrical signal output from the solid-state imaging device 120 to generate image data. Image data generated by the DSP 504 is input to a DIP (digital image processing circuit) 506.

The DIP 506 performs various types of image processing such as electronic scaling, color enhancement, and edge enhancement on the image data processed by the DSP 504. Image data that has been subjected to various types of image processing by the DIP 506 is input to the display control circuit 508.

The display control circuit 508 converts the image data from the DIP 506 into a video signal corresponding to a signal format corresponding to the monitor 600 and outputs the video signal to the monitor 600. Thereby, an observation image (endoscopic image) is displayed on the monitor 600.

In this embodiment, the insertion unit 102 of the endoscope 100 does not include an illumination unit that illuminates the body cavity. That is, there is no illumination window or light guide provided in a general endoscope, and an occupied space for arranging these members is unnecessary. For this reason, the outer diameter of the insertion portion 102 can be reduced, thereby reducing the opening size of the opening (insertion hole) formed in the body wall in order to guide the insertion portion 102 into the body cavity. it can. This makes it possible to make post-operative scars inconspicuous and reduce the burden on the subject.

In the present embodiment, the outer diameter of the insertion portion 102 is preferably 3 mm or less. In this example, the outer diameter of the insertion portion 102 is configured to 2.9 mm. By setting the outer diameter of the insertion portion 102 to 3 mm or less, the opening size of the opening (insertion hole) formed in the body wall in order to guide the insertion portion 102 into the body cavity can be reduced. This eliminates the need for suturing the opening and makes postoperative scars less noticeable. If the outer diameter of the insertion portion 102 is made too thin, the space occupied by a built-in object (for example, an image guide) built in the insertion portion 102 is insufficient, and therefore the outer diameter of the insertion portion 102 is 2 mm or more. It is preferable.

The endoscope 100 configured as described above is inserted into a body cavity through a trocar 130 (see FIG. 1) that is a guide member for guiding the endoscope 100 into the body cavity. Since a known trocar 130 is used, a description of its configuration is omitted. In general, a trocar consists of a mantle tube and an inner needle and is partially incised with a scalpel or the like, and is inserted into the body cavity from the incised part or without special incision. There is a type in which a very slight incision is made and then directly inserted into the body cavity from the body epidermis, and any type can be used.

In the present embodiment, the endoscope 100 is configured by an electronic endoscope (electronic scope), but may be configured by an optical endoscope (fiber scope).

[Needle light]
Next, the configuration of the needle light will be described. Since the configurations of the needle lights 200A and 200B are common, the needle light will be indicated by the reference numeral 200 as a representative of them.

FIG. 3 is a schematic view showing a configuration example of the needle light 200. As shown in FIG. 3, the needle light 200 includes an insertion portion 202 that is inserted into a body cavity, a grip portion 204 that is provided at the rear end of the insertion portion 202, and a light that extends from the rear end of the grip portion 204. And a guide cable 206. A light source connector 208 that is detachably connected to the light source device 400 is provided at the end of the light guide cable 206.

The insertion portion 202 is made of an elongated cylindrical member having flexibility, and an illumination window 214 is attached to the distal end surface thereof. In the back of the illumination window 214, an illumination lens 216 for irradiating illumination light toward the body cavity is disposed. The illumination lens 216 faces the emission end of the light guide 218. The light guide 218 is inserted into the insertion portion 202, the grip portion 204, and the light guide cable 206, and its incident end is exposed from the end portion of the light source connector 208. When the light source connector 208 is connected to the light source device 400, the incident end of the light guide 218 is inserted into the light source device 400. Illumination light from the light source device 400 is guided to the distal end portion of the insertion portion 202 by the light guide 218 and is irradiated into the body cavity from the illumination lens 216 and the illumination window 214.

As shown in FIG. 3, the light source device 400 includes a light source 402, a light source driver 404, an aperture adjustment mechanism 406, an iris driver 408, and a CPU 410 that controls these units. The light source 402 is turned on and off under the control of the light source driver 404 and irradiates illumination light toward the condensing lens 412 positioned in front. As the light source 402, for example, a xenon lamp, a halogen lamp, an LED (light emitting diode), a fluorescent light emitting element, or an LD (laser diode) can be used. The light source 402 is appropriately selected depending on what endoscopic image (a visible image, a fluorescent image, or the like) is captured, that is, a wavelength to be used.

The aperture adjustment mechanism 406 is disposed between the light source 402 and the condenser lens 412 so that the endoscopic image captured by the solid-state imaging device 120 (see FIG. 2) of the endoscope 100 has substantially constant brightness. Adjust the amount of illumination light. The aperture adjustment mechanism 406 includes an aperture blade that changes the diameter (diaphragm diameter) of an aperture opening through which illumination light passes, and a motor that drives the aperture blade. The iris driver 408 adjusts the amount of illumination light incident on the light guide 218 by changing the illumination light passage area by opening and closing the aperture blades of the aperture adjustment mechanism 406.

In the present embodiment, the outer diameter of the insertion portion 202 is preferably 3 mm or less, and more preferably 2.3 mm or less. In this example, the outer diameter of the insertion portion 202 is 2.1 mm. As a result, similar to the insertion portion 102 of the endoscope 100, the opening size of the opening (insertion hole) formed in the body wall for guiding into the body cavity can be reduced, thereby reducing postoperative scars. It can be inconspicuous.

In the present embodiment, as the needle light 200, the illumination light from the light source device 400 is guided to the distal end portion of the insertion portion 202 by the light guide 218, and is irradiated into the body cavity from the illumination lens 216 and the illumination window 214. Although the configuration is shown, the configuration of the needle light is not limited to this, and a configuration in which an LED light source is built in the tip of the needle light may be used.

[Needle light guide device]
Next, the configuration of the needle light guide device 300 will be described. FIG. 4 is an external perspective view showing a configuration example of the needle light guide device 300. FIG. 5 is an exploded perspective view of the needle light guide device 300 shown in FIG.

As shown in FIGS. 4 and 5, the needle light guide device 300 (hereinafter referred to as “guide device 300”) includes a first outer tube 302A, a second outer tube 302B, and first and second tubes. And a coupling body 304 that couples the outer tubes 302A and 302B. Since the first and second outer tube 302A and 302B have the same configuration, the outer tube is indicated by reference numeral 302 as a representative of them.

The outer tube 302 includes an insertion portion 305 that is elongated along the longitudinal direction, and a main body portion 306 provided on the proximal end side of the insertion portion 305. An insertion passage 308 through which the insertion portion 202 of the needle light 200 can be inserted is provided in the insertion portion 305 and the main body portion 306 along the axial direction. Openings 308a and 308b are provided on the distal end side and the proximal end side of the insertion passage 308, respectively.

The insertion portion 305 is a portion formed at a portion surrounded by the body wall when the mantle tube 302 is inserted into the body cavity, and is formed of a hard member such as hard resin or metal. On the proximal end side of the insertion portion 305, a male screw portion 310 formed slightly thicker than the distal end side is provided. The male screw part 310 is configured to be able to be screwed into a through hole (female screw part) 314 of the coupling body 304 described later.

The main body portion 306 is connected to the proximal end side of the insertion portion 305 and is formed of a molded product made of a resin such as plastic. A seal member (not shown) is disposed inside the main body 306 in order to maintain airtightness in the body cavity.

The connecting body 304 is a connecting tool for connecting the first and second mantle tubes 302A and 302B, and is composed of a flat plate-like body. The coupling body 304 is provided with first and second holding portions 312A and 312B to which the first and second outer tube 302A and 302B are detachably held and fixed, respectively.

Each holding part 312A, 312B is provided with a through hole 314 through which the insertion part 305 of the outer tube 302 is inserted. On the inner wall surface of the through hole 314, a female screw portion that can be screwed with the male screw portion 310 of the insertion portion 305 is formed.

As shown in FIGS. 4 and 5, the guide device 300 configured as described above is inserted into the insertion portions 305 of the outer tubes 302A and 302B with respect to the through holes 314 of the holding portions 312A and 312B of the coupling body 304. Is inserted from the tip side. At this time, the male screw part 310 provided on the base end side of the insertion part 305 is screwed into the through-hole (female screw part) 314, and the front end side end face 306a of the main body part 306 is connected to the base end side end face (see FIG. 5 is brought into contact with the upper surface). Thus, the outer tubes 300A and 300B are connected by the connecting body 352 in a state where the axial directions of the outer tubes 302A and 302B are parallel to each other.

Next, a method of using the guide device 300 will be described with reference to FIGS. FIG. 6 is an explanatory view showing a state where the guide device 300 is inserted into the body cavity. FIG. 7 is an explanatory view showing a state where the needle lights 200A and 200B are guided into the body cavity by the guide device 300.

First, as shown in FIG. 6, the outer tubes 302A and 302B connected by the connecting body 304 are inserted into the body cavity. At this time, the inner tube (not shown) is incorporated in each of the outer tubes 302A and 302B. The inner needle has a sharp tip that can penetrate the body wall, and is inserted into the body wall with the tip of the inner needle protruding a predetermined length from the tip of each outer tube 302A, 302B. The After the distal end portion of the inner needle incorporated in each outer tube 302A, 302B penetrates the body wall, and the insertion portion 305 of each outer tube 302A, 302B is inserted to a predetermined depth position, then from each outer tube 302A, 302B Remove the inner needle.

Next, as shown in FIG. 7, the needle lights 200A and 200B are inserted into the proximal end side openings 308b (see FIG. 4) of the outer tube 302A and 302B, respectively. And the front-end | tip part of each needle light 200A, 200B is derived | led-out from the front end side opening part 308a of the outer-tube 302A, 302B through the insertion path 308 of each outer-tube 302A, 302B. Thereby, the inside of a body cavity will be in the state which can be illuminated with the illumination light radiate | emitted from the front-end | tip part of each needle light 200A, 200B.

As described above, in this embodiment, the outer tube 302A, 302B is inserted into the body cavity in a state where the axial directions of the outer tube 302A and 302B are parallel to each other. This increases the resistance received from the body wall as compared to the case where one mantle tube is inserted alone into the body cavity. Further, by inserting each outer tube 302A, 302B in an oblique direction with respect to the body skin (outer surface of the body wall), the insertion portion 305 of each outer tube 302A, 302B can be compared with the case where it is inserted in the vertical direction. The resistance received from the body wall increases. Thereby, each outer tube 302A, 302B is securely fixed to the body wall. As a result, the needle lights 200A and 200B guided into the body cavity by the mantle tubes 302A and 302B are securely fixed obliquely with respect to the body epidermis, so that the irradiation range is not reduced and the treatment target site is not narrowed. The illumination light can be irradiated in a stable state.

[Modification]
FIG. 8 is a schematic view showing a first modification of the needle light guide device 300. In FIG. 8, members that are the same as those in FIG. 4 are given the same reference numerals, and descriptions thereof are omitted.

In the first modified example, as shown in FIG. 8, the connecting body 316 is provided with two bent portions 316a and 316b between the first holding portion 312A and the second holding portion 312B. Each of the bent portions 316a and 316b is bent 90 degrees in the opposite direction to each other, thereby forming a stepped portion. Accordingly, the first and second outer tube 302A and 302B connected by the connecting body 316 are held and fixed in a state where the axial directions of the first and second outer tubes 302A and 302B are parallel to each other and shifted by a predetermined length in the axial direction.

According to the first modified example, when the guide instrument 300 is inserted into the body cavity, the bent portion 316b can be brought into contact with the body skin together with the end portion 316c of the connecting body 316 as shown in FIG. Become. Thereby, compared with the case shown in FIG. 7, it becomes possible to fix each outer tube 302A, 302B inserted diagonally with respect to the body skin to the body wall more stably.

FIG. 10 is a schematic view showing a second modification of the needle light guide device 300. In FIG. 10, members that are the same as those in FIG. 4 are given the same reference numerals, and descriptions thereof are omitted.

In the second modification example, as shown in FIG. 10, the connecting body 318 is provided with two bent portions 318a and 318b between the first holding portion 312A and the second holding portion 312B. Although common to the first modification, the bending angles of the bent portions 318a and 318b are different. In the second modification, the outer tubes 302A and 302B are held and fixed in an inclined state by the holding portions 312A and 312B so that the axial directions of the outer tubes 302A move away from the distal end side.

According to the second modified example, when the guide instrument 300 is inserted into the body cavity, the bent portion 318b can be brought into contact with the body skin together with the end portion 316c of the connecting body 316 as shown in FIG. In addition, the second mantle tube 302B can be inserted into the body cavity in a state where the second mantle tube 302B is more inclined than the first mantle tube 302A. For this reason, since the resistance which each outer tube 302A, 302B receives from a body wall increases, it becomes possible to fix each outer tube 302A, 302B to a body wall more stably. Moreover, since the irradiation range of the illumination light of each needle light 200A, 200B guided into the body cavity by each outer tube 302A, 302B is expanded as a whole, observation and treatment are facilitated.

FIG. 12 is a schematic view showing a third modification of the needle light guide device 300. In FIG. 12, members that are the same as those in FIG. 4 are given the same reference numerals, and descriptions thereof are omitted.

In the third modification, as shown in FIG. 12, the coupling body 320 includes a first fixing member 322 fixed to the first outer tube 302A and a second fixing member fixed to the second outer tube 302B. A coupling body 324 and a coupling member 326 that connects the first and second fixing members 322 and 324 are provided.

The first and second angle adjusting screws 328 and 330 (corresponding to the “angle adjusting mechanism” of the present invention) are connected to both ends of the connecting member 326 at the positions where the first and second fixing members 322 and 324 are connected, respectively. ) Is provided.

When the angle adjusting screws 328 and 330 are loosened, the fixing members 322 and 324 are rotatable relative to the connecting member 326 around the angle adjusting screws 328 and 330, The relative angle with each of the fixing members 322 and 324 can be varied. On the other hand, when the angle adjusting screws 328 and 330 are tightened, the fixing members 322 and 324 cannot be rotated relative to the connecting member 326, and the connecting member 326 and the fixing members 322 and 324 are at an arbitrary relative angle. Can be fixed. As a result, for example, as shown in FIG. 13, the first and second outer tube 302A, 302B can be held and fixed at an arbitrary angle by the connecting body 320.

According to the third modification, since the coupling body 320 includes an angle adjustment mechanism, the axial direction of each of the outer tube 302A and 302B can be held and fixed at an arbitrary angle. Accordingly, the axial direction of each of the mantle tubes 302A and 302B can be changed to an arbitrary angle according to the surgical procedure and the treatment site, and it is possible to deal with various uses with one connecting body 320, which is convenient. improves.

FIG. 14 is a schematic view showing a fourth modification of the needle light guide device 300. FIG. 15 is a plan view showing a connector 304 according to a fourth modification. 14 and 15, members that are the same as those in FIG. 4 are given the same reference numerals, and descriptions thereof are omitted.

In the fourth modified example, as shown in FIGS. 14 and 15, the first to third holding tubes in which the first to third outer tube 302A to 302C are detachably held and fixed to the coupling body 304, respectively. Portions 312A to 312C are provided. The first to third holding portions 312A to 312C are not arranged so as to be aligned on the same straight line, but are arranged two-dimensionally. In other words, the third holding unit 312C is arranged in a direction different from the direction in which the first and second holding units 312A and 312B are arranged.

According to the fourth modified example, when the guide device 300 is inserted into the body cavity, the three outer tube 302A to 302C are supported at three points so that the guide device 300 is fixed to the body wall in a more stable state. Is possible.

In the fourth modified example, the first to third outer tube 302A to 302C connected by the connecting body 316 are parallel to each other in the axial direction. It is also possible to use in combination.

As described above, the connection tool, the guide device for the intra-body-cavity insertion tool, and the intra-body-cavity illumination device according to the present invention have been described in detail. However, the present invention is not limited to the above examples and is within the scope not departing from the gist of the present invention. Of course, various improvements and modifications may be made.

In the present embodiment, the case where the needle light 200 is applied as an intra-body-cavity insertion tool has been described as an example. However, the present invention is not limited to this, and can be applied to other intra-body-cavity insertion tools.

DESCRIPTION OF SYMBOLS 10 ... Medical observation system, 100 ... Endoscope, 102 ... Insertion part, 104 ... Grip part, 110 ... Observation window, 112 ... Objective optical system, 120 ... Solid-state image sensor, 200 ... Needle light, 202 ... Insertion part, 204 ... Grip part 206 ... Light guide cable 208 ... Light source connector 214 ... Illumination window 216 ... Illumination lens 218 ... Light guide 300 ... Guiding instrument 302A ... First outer tube 302B ... Second Outer tube, 302C ... third outer tube, 304 ... connector, 305 ... insertion portion, 306 ... main body portion, 308 ... insertion passage, 312A ... first holding portion, 312B ... second holding portion, 312C ... first 3 holding portions, 316... Linking body, 318... Linking body, 320 .. linking body, 322... First fixing member, 324. Degree adjustment screw, 400 ... light source apparatus, 500 ... processor unit, 600 ... monitor

Claims (9)

A first mantle tube having an insertion passage for guiding the first body cavity insertion tool into the body cavity is connected to a second mantle tube having an insertion passage for guiding the second body cavity insertion tool into the body cavity. A connecting tool for
A connecting body for connecting the first and second outer tubes;
The coupling body is provided with a first holding part for holding and fixing the first outer tube and a second holding part for holding and fixing the second outer tube,
The first and second holding portions are connectors that hold and fix the first and second outer tubes, respectively, in a state where the relative positional relationship between the first and second outer tubes is fixed. The said 1st and 2nd holding | maintenance part hold | maintains and fixes the said 1st and 2nd mantle tube, respectively in the state which mutually made the axial direction of the said 1st and 2nd mantle tube parallel. Connector. The first and second holding portions are configured so that the first and second outer tubes are respectively inclined in a state where the axial directions of the first and second outer tubes are away from each other toward the distal end side. The coupling tool according to claim 1, which is held and fixed. The connector according to any one of claims 1 to 3, wherein the connecting body is provided with a stepped portion including a plurality of bent portions. The connector according to claim 1, wherein the connecting body is provided with an angle adjusting mechanism capable of adjusting a relative angle between an axial direction of the first outer tube and an axial direction of the second outer tube. The connector connects the first mantle tube, the second mantle tube, and a third mantle tube having an insertion passage for guiding the third body cavity insertion tool into the body cavity. And
The connection body is provided with a third holding portion for holding the third outer tube,
The connector according to any one of claims 1 to 5, wherein the third holding portion is arranged in a direction different from a direction in which the first and second holding portions are arranged. The coupling tool according to any one of claims 1 to 6, wherein the first and second body cavity insertion tools are lighting tools for illuminating the body cavity. A first mantle tube having an insertion passage for guiding the first body cavity insertion tool into the body cavity;
A second mantle tube having an insertion path for guiding the second body cavity insertion tool into the body cavity;
A connecting body for connecting the first and second outer tubes,
The coupling body is provided with a first holding part for holding and fixing the first outer tube and a second holding part for holding and fixing the second outer tube,
The first and second holding portions are insertion devices for body cavities that hold and fix the first and second mantle tubes, respectively, in a state where the relative positional relationship between the first and second mantle tubes is fixed. Guidance equipment. First and second illuminators for illuminating the body cavity;
A first mantle tube having an insertion path for guiding the first lighting device into a body cavity;
A second mantle tube having an insertion path for guiding the second lighting device into the body cavity;
A connecting body for connecting the first and second outer tubes,
The coupling body is provided with a first holding part for holding and fixing the first outer tube and a second holding part for holding and fixing the second outer tube,
The intra-body-cavity illumination device that holds and fixes the first and second mantle tubes in a state where the relative positional relationship between the first and second mantle tubes is fixed, respectively. .

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