JP5687534B2 - Operation handle device for in-vivo diagnostic device - Google Patents

Description

  The present invention relates to an operation handle device of an in-vivo diagnostic device such as an endoscope that is operated by inserting a long cylindrical insertion portion into a human body, and in particular, by bending an optical fiber inserted through the long cylindrical insertion portion. The present invention relates to an operation handle device of an in-vivo diagnostic device that prevents damage and is easy to operate.

  In general, an operation handle device of an in-vivo diagnostic device such as an endoscope that operates a long cylindrical insertion portion having a curved tip is described in, for example, the following Patent Document 1, which includes a long cylindrical shape. A structure is described in which an operation wire for bending the distal end of the insertion portion and an optical fiber through which laser light passes are inserted, and light passing through the optical fiber is irradiated at the distal end portion of the long cylindrical insertion portion.

Japanese Patent Laid-Open No. 11-188107

  The operation handle device described in Patent Literature 1 includes a cylindrical first member that holds the rear end of the insertion portion, and a cylindrical second member that holds the rear end of the operation wire. The distal end of the insertion portion is bent by a separation operation that relatively widens or narrows the distance between the member and the second member.

  In the operation handle device, the distal end portion of the optical fiber is fixed to the distal end electrode at the distal end of the insertion portion with an adhesive or the like, passes through the insertion portion, and extends movably from the guide tube attached to the first member. The optical fiber and the guide tube run through a second, larger plastic guide tube attached to the inside of the second member. As a result, the guide tube and the optical fiber can slide in the longitudinal direction. In this conventional operation handle device, the optical fiber is slid by being compressed or extended in the operation handle device by the separation operation of the first member and the second member, and the optical fiber enters and exits from the second member. As the entrance / exit portion wears out, the optical fiber enters and exits, so that it touches the operator's body and is easily bent by the movement of the hand. And once it breaks, it becomes difficult to slide in the longitudinal direction, and the bending operation may be repeated, and the optical fiber may be damaged. In the worst case, when the distal end of the insertion portion is bent There was a problem that the optical fiber could buckle and the curvature could not return in the body.

  Further, in the case of an endoscope according to the prior art, the operation handle device is increased in weight and weight because it includes a bending mechanism for observing a desired body part and a fluid switching mechanism for supplying a fluid such as air. The left hand with the palm facing upward, and the bending knob of the insertion handle holding handle needs to bend the tip of the insertion section. For this reason, there is a problem that it is difficult to adjust the fine bending angle.

  In view of such a problem, an object of the present invention is to provide an operation handle device of an in-vivo diagnostic device that can easily bend the tip and prevent the optical fiber from being damaged.

  In order to achieve the above object, the present invention provides an insertion portion having a long cylindrical shape, an operation wire that is inserted through the insertion portion, has one end fixed to the distal end portion of the insertion portion, and bends the distal end portion. An optical fiber with one end fixed to the distal end of the insertion portion, an insertion portion holding handle for holding the rear end of the insertion portion, and a slide piece for holding the other end of the operation wire are fixed to the inner wall to hold the insertion portion. An operation handle device for an in-vivo diagnostic device comprising an operation wire holding handle for slidably holding the handle, and a long cylindrical guide tube for holding an optical fiber fixedly in the inner tube. The first feature is that the cylindrical insertion portion is fixed in the extending direction.

  The present invention also includes an insertion portion having a long cylindrical shape, an operation wire that is inserted into the insertion portion, one end is fixed to the distal end portion of the insertion portion, and the distal end portion is bent, and the other end is inserted into the insertion portion. An optical fiber fixed to the distal end of the insertion section, an insertion section holding handle that holds the rear end of the insertion section, and a slide piece that holds the other end of the operation wire are fixed to the inner wall, allowing the insertion section holding handle to slide freely. An operation handle device of an in-vivo diagnostic device comprising an operation wire holding handle for holding, an insertion portion holding handle holding a guide tube having a long cylindrical shape that holds an optical fiber fixedly in the inner tube, and a guide tube And a rear end cap portion that covers the cylinder opening portion at the rear end of the insertion portion holding handle, and the guide tube is fixed to the rear end cap portion in a direction in which the long cylindrical insertion portion extends. And

  According to the third aspect of the present invention, in the operation handle device according to the first or second feature, the optical fiber is covered with a fiber-coated tube covering an outer periphery of the optical fiber, and the guide tube holds the fiber-coated tube fixedly. It is characterized by.

  Further, according to the present invention, in the operation handle device according to any one of the first to third features, the optical fiber includes a light supply fiber that guides light from the light source device that generates illumination light, and a distal end portion of the insertion portion. And a light receiving fiber that guides the light to the eyepiece.

  Further, according to the fifth aspect of the present invention, in the operation handle device according to any one of the first to third features, the optical fiber is a cauterization fiber that guides light from a light source device that generates laser light for cauterization. It is characterized by.

  Therefore, from the above description, according to the operation handle device of the in-vivo diagnostic apparatus according to the present invention, the distal end of the operation wire and the distal end of the optical fiber are fixed to the distal end of the insertion portion, and the rear end of the insertion portion and the insertion portion holding handle Since the optical fiber is fixed and the operation wire held by the operation wire holding handle moves through the slide piece in the insertion portion holding handle, it is fixed to the insertion portion holding handle. Even if the extending optical fiber is bent at the distal end, it is not compressed, stretched, or slid in the insertion portion holding handle, and stably fits in the insertion portion holding handle. There is an effect that it is possible to reduce bending due to hand movements without interfering with wear on the hands and the operation of the operator.

The external view which shows the operation handle apparatus by embodiment of this invention. Sectional drawing which shows the internal structure of the operation handle apparatus by this embodiment. Sectional drawing which shows the optical fiber arrangement | positioning state of the operation handle apparatus by this embodiment. The figure for demonstrating the slide piece of the operation handle apparatus by this embodiment. The figure which shows other embodiment of the optical fiber holding structure by this invention.

  Hereinafter, an operation handle device of an in-vivo diagnostic device according to an embodiment of the present invention will be described in detail with reference to the drawings. The operation handle device 20 according to the present embodiment is for operating an in-vivo diagnostic device such as an endoscope, for example, and bends the distal end portion 1a of the insertion portion 1 as shown in FIG. For this purpose, a cylindrical operation wire holding handle 21 for holding the rear end of the operation wire 4 inserted through the insertion portion 1 and having the distal end attached to the distal end portion 1a of the insertion portion 1 by the slide piece 15, and a long cylindrical insertion portion And an insertion portion holding handle 22 for moving the distance in the length direction of the insertion portion 1 relative to the operation wire holding handle 21 while holding the rear end of the operation wire holding handle 21.

  The insertion portion holding handle 22 is connected to the rear end portion on the operator side to the light supply fiber 14 for guiding laser light or illumination light from the light source device 100 and the eyepiece portion 11 for visual confirmation by the operator. A power cable 13a is connected to the power supply device 200 to supply power to the flexible fiber-coated tube 16 that covers the light receiving fiber 18 and to a conducting wire 13c that is connected to an electrode (not shown) or to measure a body potential difference. A rear end cap portion 30 into which the power connector 13b that is electrically connected through the optical connector is inserted, and the laser beam or illumination light from the light source device 100 is transmitted through the light supply fiber 14 to the distal end portion 1a of the insertion portion 1; The reflected light (image or the like) received by the tip 1a is made visible to the operator through the light receiving fiber 18 and is shown in FIG. Further, the operation wire holding handle 21 is operated so as to increase the distance between the insertion wire holding handle 22 and the insertion portion holding handle 22 in the direction of arrow A in the figure. The distal end portion 1a of the insertion portion 1 to which the distal end of the operation wire 4 is attached is curved by performing an operation to move the distal end of the operation wire 4. In the present embodiment, an example in which the distal end portion of the insertion portion 1 is curved by the movement in the direction of the arrow A has been described, but conversely, the operation wire holding handle 22 may be moved in the direction opposite to the arrow. Although the part 1 was made into the cylinder shape, it is not restricted to this, For example, you may use a multi-lumen tube.

  The operation handle device 20 according to the present embodiment has a cylindrical operation wire holding handle 21 that holds the slide piece 15 to which the operation wire 4 is fixed inside as shown in FIGS. In addition, the insertion portion 1 is fixed, and the slide piece 15 has an elongated slit 8a formed from the rear end side toward the intermediate portion so that the slide piece 15 can slide in the axial direction. A slide cylinder portion 8, a finger hook portion 9 projecting to the outer peripheral portion for an operator to operate with a finger, and a rear end cap portion 30 covering a cylindrical open portion on the rear end side of the slide cylinder portion 8. The insertion portion holding handle 22 is constituted. The operation handle device 20 configured in this manner increases the distance between the finger holding portion 9 of the insertion portion holding handle 22 and the operation wire holding handle 21 in a state where the operator holds the operation wire holding handle 21. The slide cylinder portion 8 is configured to move upward in the drawing as shown in FIG. 2B by sliding the tip in the direction of the tip 1a (upward in FIG. 2).

  As shown in FIGS. 4B and 4C, the slide piece 15 has a substantially plate shape in which a hole 15c for attaching the operation wire 4 is opened at the center, and stepped portions 15b are formed at both ends of the plate shape. A thin portion 15a having a narrow plate width is provided, and this thin portion 15a passes through the slit 8a of the slide cylinder portion 8 as shown in FIG. 4A showing the AA cross section of FIG. At the same time, it is fitted and fixed to a guide slit 25 provided in a groove shape so as to face the inner cylinder of the operation wire holding handle 21. The operation handle device configured as described above moves the finger hooking portion 9 of the insertion portion holding handle 22 to the upper side in the figure while holding the operation wire holding handle 21, so that the inside of the inner cylinder of the operation wire holding handle 21 is moved. The slide cylinder portion 8 is configured to slide upward in the figure.

  As shown in FIG. 2, the rear end cap portion 30 according to the present embodiment, which is placed on the rear end portion of the slide cylinder portion 8 of the insertion portion holding handle 22, includes the light supply fiber 14 from the light source device 100 and the eyepiece. A guide tube 17 made of stainless steel or the like for inserting the fiber-coated tube 16 integrally covering the light receiving fiber 18 connected to the section 11 into the operation wire holding handle 21, and the power supply device 200 via the power cable 13a. The guide cylinder 17 is attached to the inner wall of the hole formed in the rear end cap part 30 with an adhesive and is inserted into the cylinder. The fiber-coated tube 16 is also bonded by an adhesive. With this configuration, the light supply fiber 14 and the light receiving fiber 18 are fixed to the rear end side of the insertion portion holding handle 22 via the fiber covered tube 16 and the guide tube 17.

  Further, as shown in FIG. 3A, the operation handle device exposes the light supply fiber 14 and the light receiving fiber 18 from the fiber-coated tube 16 at a position inside the slide cylinder portion 8 of the insertion portion holding handle 22. Thus, the light supply fiber 14 and the light receiving fiber 18 are inserted into the insertion portion 1, and the light supply fiber 14 and the light receiving fiber 18 are bonded to the distal end of the insertion portion 1. For this reason, in the operation handle device according to the present embodiment, the light supply fiber 14 and the light receiving fiber 18 are fixed to the distal end of the insertion portion 1 and the rear end side of the insertion portion holding handle 22. As shown in FIG. 3B from the state in which the distal end portion 1a of 1 is linear (FIG. 3B), the light receiving fiber from the fiber-coated tube 16 even in the state in which the distal end portion 1a of the insertion portion 1 is curved. The distance L between the ejection position of the optical fiber 18 and the light supply fiber 14 and the insertion position into the insertion portion 1 does not change. Accordingly, since the light receiving fiber 18 and the light supplying fiber 14 do not enter and exit from the operation handle device even if the operator operates the operation handle device, the light receiving fiber 18 and the light supply fiber 14 may be worn by the vicinity of the guide tube 17 or the movement of the operator's hand. It is possible to prevent the light receiving fiber 18 and the light supplying fiber 14 from being damaged due to the bending and the bending operation being repeated in the bent state.

  In addition, the operation handle device for an endoscope according to the present embodiment is for operating the optical fiber for monitoring the affected part and the bending of the bending operation wire, so that it is small and lightweight, and the palm of the right hand is directed downward. It can be held and operated with the thumb of the right hand, and the affected part can be easily observed, bent, or the like.

  In the operation handle device according to the present embodiment, the guide tube 17 for inserting the fiber-coated tube 16 into the rear end cap portion 30 is disposed, and the insertion direction of the fiber-coated tube 16 is directed toward the insertion portion 1. Accordingly, even when the operator rotates the operation handle device 20, the optical fiber is not bent, and it is possible to prevent breakage due to bending while maintaining the passage of light.

In the above-described embodiment, the example in which the guide cylinder 17 is used as the means for guiding the fiber-coated tube 16 has been described. However, the present invention is not limited to this, and as shown in FIG. By providing a rear end cap part 40 having a cylindrical protruding cylinder part 40a having a groove, and a guide cylinder 50a screwed onto the outer periphery of the protruding cylinder part 40a, and screwing the guide cylinder 50a into the protruding cylinder part 40a, The guide mechanism 50 may be configured to fasten and fix the fiber-coated tube 16 to the projecting cylinder 40a, and may be configured to be fixed to the operation wire holding handle 21. Reference numeral 50b denotes a folding-preventing rubber for preventing the fiber-coated tube from being broken.
The folding stop rubber 50b attached to the guide mechanism unit 50 may be used by being fitted to the guide cylinder 17 or may be used in various ways such as by extending the guide cylinder 50a without using the folding stop rubber. Can be changed. In the case of using as a handle device for muscle ablation that does not require observation, for example, only the laser light supply fiber may be used instead of the light supply fiber 14 and the light receiving fiber 18. In addition, it can be used for physiological examinations such as Ph measurement and body secretion measurement.

DESCRIPTION OF SYMBOLS 1 Insertion part 1a Tip part 4 Operation wire 8 Slide cylinder part 8a Slit 9 Finger part 11 Eyepiece part 13a Power cable 13b Power connector 13c Conductor 14 Light supply fiber 15 Slide piece 15a Thin part 15b Step part 15c Hole 16 Fiber covering tube 17 Guide tube 18 Light receiving fiber 20 Operation handle device 21 Operation wire holding handle 22 Insertion portion holding handle 25 Guide slit 30 Rear end cap portion 40 Rear end cap portion 40a Projection tube portion 50a Guide tube 50b Folding prevention rubber 100 Light source device 200 Power supply

Claims (5)

A long cylindrical insert,
An operation wire that is inserted through the insertion portion and has one end fixed to the distal end portion of the insertion portion and bending the distal end portion;
An optical fiber inserted through the insertion portion and having one end fixed to the distal end of the insertion portion;
An insertion portion holding handle for holding a rear end of the insertion portion;
Holding a slide piece that holds the other end of the operating wire to the inner side, the insertion portion holding handle an operation handle device body diagnostic apparatus and an operation wire holding handle for holding slidably,
Wherein the insertion portion holding the handle, the operating handle apparatus characterized by fixing the length cylindrical guide tube to be fixed to the inner tube of the optical fiber in a direction insertion portion extends in the long cylindrical shape. A long cylindrical insert,
An operation wire that is inserted through the insertion portion and has one end fixed to the distal end portion of the insertion portion and bending the distal end portion;
An optical fiber inserted through the insertion portion and having one end fixed to the distal end of the insertion portion;
An insertion portion holding handle for holding a rear end of the insertion portion;
Holding a slide piece that holds the other end of the operating wire to the inner side, the insertion portion holding handle an operation handle device body diagnostic apparatus and an operation wire holding handle for holding slidably,
The insertion portion holding the handle, the length cylindrical guide tube to be fixed to the inner tube of the optical fiber, and the rear cap portion which holds the guide tube covers the cylindrical opening portion of the rear end of the insertion portion holding the handle The operation handle device is characterized in that the guide tube is fixed to the rear end cap portion in a direction in which the elongated cylindrical insertion portion extends. The optical fiber is covered by a fiber coating tube covering the optical fiber outer peripheral portion, the operation handle device according to claim 1 or 2, wherein the guide tube is characterized in that fixed to the fiber coating tube.   The optical fiber includes a light supply fiber that guides light from a light source device that generates illumination light, and a light receiving fiber that guides light from a distal end portion of an insertion portion to an eyepiece portion. The operation handle device according to any one of 1 to 3.   The operating handle device according to any one of claims 1 to 3, wherein the optical fiber is a cauterizing fiber that guides light from a light source device that generates laser light for cauterization.

Images