JPS61231509A - Optical fiber cable - Google Patents

Abstract

PURPOSE:To prevent the opening of a hand piece part from being contaminated with body liquid by providing an opening/closing lid to a projection part, and sliding the hand piece part and an optical fiber and controlling the opening/ closing lid. CONSTITUTION:When the optical fiber is inserted into the body, the lid 8 is formed of an elastic body or resin film and closes the opening part 7 by slackening or with a compressive force. Then, when laser beam 20 is irradiated in the body, the handle 21 of a protection tube 12 energized by a compression spring 13 and the handle 22 of the hand piece part 3 are held and force is pressed against the compression spring 13 to slide the protection tube 12 in the hand piece part 3, so that it projects by pressing and opening the lid 8. Consequently, the projection part 10 of the optical fiber 9 enters an open state and the laser beam 20 can be irradiated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an optical fiber cable that guides laser light or the like to a target site.

BACKGROUND OF THE INVENTION Conventionally, in a laser scalpel or a laser processing machine as shown in FIG. 1, an optical fiber cable 2 with excellent operability is used to guide a laser beam in a device 1 equipped with a laser oscillation tube. For example, in a laser scalpel using this, the handpiece part 3 of the optical fiber cable 2, which has a small diameter and excellent flexibility, is inserted into the body using an endoscope or a rigid scope.
- Treatment without opening the affected area is attracting attention, and when the laser emitting unit 4 is inserted into the body, the end face of the optical fiber 6 is contaminated with bodily fluids, etc., and if the laser is irradiated in that state, the optical fiber 6 is burnt out.

Therefore, a method is adopted in which the assist gas 6 is inserted into the body while flowing out from the emission part 3. However, depending on the part of the body (e.g. eyeballs, stomach, intestines, etc.), if too much assist gas is introduced into the body, internal pressure will increase, which is undesirable, so a method of flowing assist gas while measuring this internal pressure is not recommended. This is a state in which the assist gas cannot flow out sufficiently to prevent the optical fiber 6 from being contaminated. Therefore, the present invention has a structure in which a stain-preventing lid is provided on the emission part to prevent the emission end from becoming dirty when inserted into the body.

Means for Solving the Problems The technical means of the present invention for solving the above problems is to provide an opening/closing lid on the emission section, and to control the opening/closing lid by sliding the hand piece section and an optical fiber. The structure is such that it can be carried out.

Effect The effect of this technical means is as follows. That is, when the optical fiber cable is inserted into the body, the optical fiber is recessed inside the hand piece, and the opening of the hand piece is closed with a lid to prevent it from being contaminated by body fluids and the like. When irradiating the inside of the body with laser light, the lid is opened by sliding the light 7 eye bar in the handpiece, and irradiation can be performed with the optical fiber protruding.

Therefore, there is no dirt on the emitting part when it is inserted into the body.
Furthermore, since more assist gas than necessary is not injected into the body, safe and reliable surgery can be performed.

Embodiment Figures 2.3 and 4.5 show an optical cable 1 according to an embodiment of the present invention.
This is the configuration of the handpiece section 3 in .

FIG. 2 is a diagram in which the opening 7 of the hand piece 3 is closed with the lid 8 in a state such as when the hand piece is inserted into the body.

Reference numeral 9 denotes an optical fiber, and a window 11 is provided in the output section 10. The optical fiber 9 is inserted into the protective tube 12, and one end of the lid 8 of the opening 7 is fixed to the distal end of the protective tube 12, and the other end of the lid 8 is fixed to the distal end of the handpiece section 3. has been done. This lid may be made of a resin film material or an elastic material such as silicone rubber, and has a cylindrical shape fixed to each tip. The protection tube 12 is configured to be slidable inside the handpiece part 3, and a compression spring 13 is provided at the part where it comes out from the handpiece part 3, and normally the cover 8 is moved in the direction in which the opening 7 is closed. is energized by

The protective tube 1 is
2, the protective tube 12 is removed from the opening 7.
is projected and the lid 8 is opened.

In FIGS. 3 and 4, an assist gas path 14 is formed in the protective tube 12, and an assist gas inlet 17 is provided in the handpiece portion 3 through which the assist gas flows from an external pump 16 through a pressure 5W1e. The assist gas inlet 18 of the protective tube 12 is normally connected to the handpiece section 3.
When the lid 8 is opened, that is, when the protective tube 12 is slid, the inlet 1 does not match the assist gas inlet 17 of the
7 and 18 are configured to match. Pressure 16 is connected to a laser control device 19 and is connected to inlets 17 and 18.
The structure is such that when they match, laser light irradiation is possible, and when they do not match, laser light is not emitted.

The handpiece section 3 will be explained in detail below with reference to FIGS. 2 and 3. When inserted into the body, this time difference 8 is made of an elastic material (such as silicone rubber) or a resin film in the state shown in Fig.
is closed, but this state is sufficient for simple dirt prevention. If the lid is to be made more firmly, this will be explained with reference to FIGS. 4 and 5. Next, when irradiating the laser beam 2o inside the body, the handle 2 of the protective tube 12 is biased by the compression spring 13.
1 and the handle 22 of the handpiece part 3, and hold the compression spring 13.
When a force is applied against the protective tube 12, the protective tube 12 slides inside the handpiece portion 3, pushes the lid 8 apart, and protrudes. As a result, the output portion 1o of the optical fiber 9 becomes open, and the laser beam 20 can be irradiated. next,
Another embodiment of the present invention will be described with reference to FIGS. 4 and 6. When the lid is firmly closed when inserted into the body, assist gas is injected into the handpiece section 3 from the pump 16 through the pressure switch 16 and from the inlet 17. At this time, the assist gas applies pressure to the inlet lid 8 between the protective tube 12 and the handpiece section 3. As a result, the assist gas does not leak to the outside, and the lid 8 is firmly attached.

At this time, by turning on the pressure switch 16, a signal is sent to the laser control section 19, so that the laser irradiation is not performed. Therefore, when the lid 8 is on, there is no chance of accidentally irradiating the laser and burning out the lid 8 and the like. Next, in the case of irradiation inside the body, the cover 8 is opened by sliding the protective tube 12, the assist gas inlet 18 of the protective tube 12 is aligned with the inlet 17 of the hand piece part 3, and the assist gas is The gas flows out from the emission section 10 through the gas path 14 . Therefore, the pressure switch 16 is turned OFF, and the laser light 2o can be emitted by operating a 7-way switch (not shown) by the laser control device.

If the structure exceeds the effect of the invention, it will be possible to create a thin and deep hole (for example, inside the body).
When inserting an optical fiber cable into the body, etc., it is possible to perform laser treatment inside the body without contaminating the laser emitting part, and to perform effective work without using unnecessary assist gas in places subject to pressure restrictions (such as inside the body). By being able to do this, you can perform work safely and reliably. Furthermore, if the lid at the tip of the handpiece is made of a resin film or an elastic material, there will be less damage to the contact body during insertion and operation, and it will be safe, and from the above, its industrial value is great.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a laser irradiation device in which the optical fiber cable of the present invention is used, Fig. 2 is a sectional view of the handpiece portion of an optical 7 eyeper cable in one embodiment of the present invention when inserted into the body, and Fig. 3 4 is a cross-sectional view of the handpiece when the optical fiber cable is irradiated with a laser according to an embodiment of the present invention, FIG. 4 is a cross-sectional view of the handpiece when the optical fiber cable is inserted into the body according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view of the handpiece according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of the hand piece in another embodiment of the optical fiber cable during laser irradiation, and FIG. 6 is a cross-sectional view of the hand piece in the conventional example. 2...Optical fiber cable, 9...
Optical fiber, 3... fist - handpiece part, 12...
φ...-protective tube, 8...lid. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (3)

[Claims] (1) A fiber that guides the laser beam to the irradiation position, a tube that houses and holds the optical fiber, a hand piece that holds the output end of the optical fiber, an assist gas path, and an opening/closing lid on the hand piece opening, An optical fiber cable configured to open and close the lid by sliding the optical fiber and tube. (2) The optical fiber cable according to claim 1, wherein the assist gas path is opened and closed simultaneously with the opening and closing of the opening/closing cover by sliding the optical fiber and the tube. (3) The optical fiber cable according to claim 2, wherein means for controlling the opening/closing of the assist gas path and the emission of the laser beam are connected.