JP2005027949A - Adapter for endoscope light source apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adapter for an endoscope light source apparatus for preventing a connector from being exposed when a light guide connector is connected. <P>SOLUTION: The adapter 20 is arranged between the illumination light emitting port of the endoscope light source apparatus and the light guide connector of an endoscope, so as to connect the both. The adapter 20 includes: a connector connection unit 20b having a connector receiving part 34 to which the connector 4b is removably inserted; a protecting member 45 arranged so as to be slidable between a set position where the member is projected from the connector connection unit 20b, so as to cover the circumference of the connector 4b, and a stand-by position where the member approaches the connector connection unit 20b; and a protecting cover movement mechanism for moving the protecting member 45 from the stand-by position to the set position in the case of a connector connection when the connector 4b is inserted to the connector receiving part 34. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an endoscope light source device adapter disposed between an illumination light exit port of an endoscope light source device and a light guide connector of the endoscope.

  A light source device for an endoscope that is used to supply illumination light that irradiates a subject from a distal end portion of an insertion portion of the endoscope is generally known. An end portion of a light guide that guides illumination light projects from the light guide connector of the endoscope. A light guide fiber bundle in which a number of optical fibers are bundled in a tubular body made of a metal material is accommodated at the end of the light guide. Further, the illumination light exit port of the light source device and the light guide connector of the endoscope may be connected via an adapter for an endoscope light source device (hereinafter referred to as an adapter).

For example, Patent Document 1 discloses an endoscope light source device. The front panel of the light source device includes a plurality of sockets for connecting the light guide connector of the endoscope. Since each socket has a different shape, a light guide connector having various shapes can be connected to this light source device depending on the type and manufacturer of the endoscope.
JP-A-1-45891

  When the light guide connector of the endoscope is connected to the adapter (socket) of the light source device disclosed in Patent Document 1, depending on the shape of the light guide connector, a part of the connector (for example, one of the tubular members made of a metal material). Part) may be held exposed to the outside. In this state, when the light emitted from the illumination light exit of the light source device is incident on the end of the light guide fiber bundle of the light guide connector, a part of the incident light irradiates the connector and the tubular body of the light guide connector May be hot. For this reason, it is necessary to cover the part exposed to the outside of the adapter.

  The present invention has been made to solve such problems, and an object thereof is to provide an adapter for an endoscope light source device that prevents exposure of a connector when a light guide connector is connected.

In order to solve the above problems, an adapter for an endoscope light source device according to the present invention is disposed between an illumination light exit port of an endoscope light source device and a light guide connector of an endoscope. Connect. The adapter includes an adapter main body having a connector receiving portion into which the connector is removably inserted, a set position that protrudes from the adapter main body and covers the periphery of the connector, and a standby position on the adapter main body side. And a protective cover moving mechanism that moves the protective cover from the standby position to the set position in conjunction with a connector connecting operation in which the connector is inserted into the connector receiving portion. This is the first feature.
With such a configuration, the light guide connector can be covered when the light guide connector is connected to the connector receiving portion of the adapter.

The protective cover moving mechanism includes an urging means for urging the protective cover in the set position direction, an engaging means for locking the protective cover at a standby position, and the light guide connector including the connector receiving portion. When the connector is inserted into the connector receiving portion in a state where the protective cover is placed in the insertion track inserted in the standby position, the connector is brought into contact and pushed out from the insertion track of the connector. A second feature is that it includes a contact member to be pressed and a pressing member that presses the protective cover in a direction to release the locking of the locking means in conjunction with the operation of the contact member.
With such a configuration, when the abutting member comes into contact with the light guide connector, the protective cover is pressed by the pressing member to release the locking of the protective cover and move the protective cover to the set position. it can. For this reason, the light guide connector can be covered when the light guide connector is connected to the connector receiving portion of the adapter.

The adapter main body includes a plurality of connector receiving portions that respectively receive a plurality of types of light guide connectors having different shapes.
Since it has such a configuration, a plurality of types of light guide connectors can be connected to one adapter.

  ADVANTAGE OF THE INVENTION According to this invention, the adapter for endoscope light source devices which prevents exposure of a connector when a light guide connector is connected can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. First, a first embodiment will be described with reference to FIGS.

As shown in FIG. 1, the endoscope apparatus 1 mainly includes an endoscope 2 and a light source device 3 connected to the endoscope 2. The endoscope 2 is provided with a light guide cable 4 incorporating a light guide. The endoscope 2 and the light source device 3 are connected via the light guide cable 4.
The endoscope 2 is provided with an insertion portion 5 that is inserted into a subject. A camera head 7 for observing the subject from the distal end portion of the insertion portion 5 is connected to the proximal end portion of the insertion portion 5. The camera head 7 incorporates a CCD element (not shown) that captures an observation image of the subject by the endoscope 2 and converts the subject image into an electrical signal. The camera head 7 is connected to a camera control unit (hereinafter referred to as CCU) 8. A monitor 9 is connected to the CCU 8. For this reason, when the subject image is picked up by the CCD element in the camera head 7, the subject image is converted into an electrical signal, and this electrical signal is transmitted to the CCU 8. The CCU 8 processes the electrical signal and transmits the electrical signal (video signal) to the monitor 9 to display a subject image of the subject on the monitor 9.

  The light source device 3 described above includes a lamp 11, a diaphragm 12 that narrows the light emitted from the lamp 11, and a light control circuit 13 that controls (adjusts) the diaphragm amount of the diaphragm 12. The dimming circuit 13 controls the aperture 12 so that the brightness of the subject 15 is constant. For this reason, the brightness of the light emitted from the lamp 11 to the outside of the light source device 3 is adjusted. The emitted light from the lamp 11 illuminates the subject 15 through the diaphragm 12, the light guide cable 4, and the endoscope 2. An image of the subject 15 photographed by the endoscope 2 is converted into an electric signal by a CCD element in the camera head 7, processed by the CCU 8, and then observed by sending a video signal to the monitor 9.

  As shown in FIG. 2, the housing 3 a of the light source device 3 includes a connector socket 22. The connector socket 22 includes two socket holes 24 and 25. Of the two socket holes 24, 25, one end 24 a of one socket hole 24 is at a position where the emitted light from the lamp 11 shown in FIG. That is, the socket hole 24 is on the optical axis of the lamp 11. One end of the other socket hole 25 is closed. The connector socket 22 includes an illumination light emission port 26 in which a connecting portion main body 30 of a light source device connecting portion 20a described later is disposed at the other end of the socket holes 24 and 25.

  An endoscope light source device adapter (hereinafter referred to as an adapter) 20 for guiding light to a light guide connector 4b (to be described later) of the endoscope 2 is connected to the connector socket 22 of the light source device 3. As shown in FIGS. 3 and 4, the adapter 20 is connected to a light source device connection portion 20 a detachably coupled to a connector socket 22 of the light source device 3 and a light guide connector 4 b described later of the endoscope 2. And a connector connection unit 20b.

  The light source device connection portion 20a includes a connection portion main body 30 having a substantially cylindrical shape. A lens connector 31 and a positioning shaft member 32 project from one end surface of the connection portion main body 30. The lens connector 31 and the positioning shaft member 32 protrude in the same direction from one end surface of the connection portion main body 30. The positioning shaft member 32 is formed so that the protruding length from the connection portion main body 30 is shorter than the lens connector 31.

  As shown in FIGS. 5 and 6, when connecting the light source device 3 and the adapter 20, the connection portion main body 30 is connected to the illumination light exit port 26 of the socket 22 of the light source device 3. The positioning shaft member 32 is inserted into the other socket hole 25. The lens connector 31 is inserted into the socket hole 24 of the light source device 3. At this time, since the socket hole 24 is on the optical axis of the lamp 11, the lens connector 31 is disposed on the optical axis of the lamp 11.

  As shown in FIG. 4, a locking ring 28 that expands and contracts in the radial direction is provided on a part of the outer peripheral surface of the connection portion main body 30. The locking ring 28 is urged outward in the radial direction. For this reason, when the light source device connection portion 20a of the adapter 20 is connected to the socket 22 (illumination light emission port 26) of the light source device 3, the locking ring 28 is locked to the wall portion of the illumination light emission port 26 of the socket 22. Is done.

  The lens connector 31 includes a connection tube 31a formed of a metal member, and a lens portion 31b disposed inside the connection tube 31a. A locking ring 33 that expands and contracts in the radial direction is provided on a part of the outer peripheral surface of the connection pipe 31a. The locking ring 33 is urged outward in the radial direction. For this reason, when the connection tube 31 a is disposed in the socket hole 24 of the socket 22 of the light source device 3, the locking ring 33 is locked to the wall portion of the socket hole 24.

  A shaft 36 projects from the other end surface of the connection portion main body 30 of the light source device connection portion 20a. A connector connecting unit 20b is coupled to the shaft 36 so as to be rotatable about the axis of the shaft 36. Specifically, the connector connecting unit 20b is rotatably supported by a ball bearing 37 that contacts the outer periphery of the shaft 36 (center of the connector connecting unit 20b). That is, the connector connection unit 20b rotates around the shaft 36 as a central axis. Although not shown, the connector connection unit 20b includes a switching mechanism that can be switched between a fixed state that is fixed at a desired rotational position and a rotatable state that is unlocked and freely rotatable.

  As shown in FIG. 3B, the connector connecting unit 20b is provided with four connector receiving portions 34. The connector receiving portions 34 are arranged at substantially equal intervals on the same circumference having the same center (shaft 36) in the connector connection unit 20b, and are formed as circular holes, respectively. Each connector receiving portion 34 includes an axis parallel to the central axis of the connector connecting unit 20b. When the connector connecting unit 20b is rotated with respect to the light source device connecting portion 20a, the selected one of the four connector receiving portions 34 is disposed on the same axis as the lens connector 31.

  The plurality of connector receiving portions 34 are provided in the connector connecting unit 20b in order to arrange light guide connectors 4b (described later) having different shapes on the lens connector 31 described above. When the desired connector receiving portion 34 is arranged on the same axis as the lens connector 31, the switching mechanism is operated to restrict the rotation with respect to the light source device connecting portion 20a.

  As shown in FIG. 4, each connector receiving portion 34 is provided with a contact spring 35 urged from the wall portion of the connector receiving portion 34 toward the inside of the connector receiving portion 34. When a light guide connector 4b, which will be described later, is inserted into the connector receiving portion 34, the contact spring 35 is brought into contact with the outer periphery of the light guide connector 4b and is held by the biasing force.

  Further, a protective member (connector protective cover) 45 is disposed on the outer periphery of the connector connection unit 20b so as to be slidable along the central axis direction of the connector connection unit 20b. The protective member 45 is formed in a substantially bottomed cylindrical shape and covers the outer periphery of the connector connection unit 20b from one side. The protective member 45 is formed with openings 45a corresponding to the openings of the connector receiving portion 34, respectively. The protective member 45 covers the tubular body 60 made of a metal material of the light guide connector 4b when the light guide connector 4b is connected.

  Two annular grooves (first and second annular grooves) 47 and 48 are provided on the outer peripheral surface of the connector connection unit 20b as movement restricting portions (locking means) for restricting the movement of the protection member 45. The first annular groove 47 is provided at a position close to the light source device connection portion 20a, and the second annular groove 48 is provided at a position separated from the light source device connection portion 20a. On the other hand, an annular convex portion 49 is provided at a portion of the inner peripheral surface of the protection member 45 that is close to the light source device connection portion 20a. The annular protrusion 49 engages with the first and second annular grooves 48. For this reason, the protection member 45 slides to nearly twice the height of the connector connection unit 20b with respect to the axial direction of the connector connection unit 20b. That is, the slide is performed until almost the entire outer peripheral surface of the connector connection unit 20b is exposed.

  A groove 51 is formed on one end face of the connector connection unit 20b concentrically with the central axis of the connector connection unit 20b. A circular spring (biasing member) 52 is disposed in the groove 51 so as to urge the protection member 45 in a direction away from the connector connection unit 20b. For this reason, the protection member 45 is urged in a direction away from the socket 22 of the light source device 3 by the spring 52 of the connector connection unit 20b. At this time, when the engagement between the first annular groove 47 and the annular convex portion 49 is released, the protection member 45 slides along the axial direction of the connector connecting unit 20b to form an annular shape with the second annular groove 48. The convex part 49 is engaged.

  The connector connecting unit 20b is provided with a moving mechanism (protective cover moving mechanism) that slides the protective member 45 within a predetermined range with respect to the connector connecting unit 20b. A passage 55 is formed in the connector connection unit 20b as a moving mechanism. The passage 55 is formed in the vicinity of each connector receiving portion 34 and parallel to the axial direction of the connector receiving portion 34. That is, the passage 55 is formed in parallel to the central axis of the connector connection unit 20b. Further, the passage 55 is opened on the side separated from the light source device connection portion 20a. The passage 55 is provided with a hard driving rod (protective cover pressing member) 56 as a moving member that moves in the passage 55. A rotating member 57 having, for example, a rectangular surface is pivotally supported on the connector connecting unit 20b so that the driving rod 56 is moved along the passage 55 at the distal end side of the driving rod 56. One end (one end portion) of the rotating member 57 is abutted so as to receive the tip of the drive rod 56 in a plane. Further, the position (the other end portion) that is symmetric with respect to the pivot shaft of the rotation member 57 rotates between the position exposed in the hole of the connector receiving portion 34 and the position removed from the hole. .

  As shown in FIG. 7A, when the first annular groove 47 of the connector connection unit 20b and the annular convex portion 49 of the protection member 45 are engaged, the base end of the drive rod 56 is the protection member. 45 is in contact with the inner peripheral surface of 45, or is in a state of being sunk with respect to the connector connection unit 20b. At this time, the tip of the drive rod 56 is in contact with the rotating member 57.

  Further, as shown in FIG. 7B, in the state where the second annular groove 48 of the connector connecting unit 20b and the annular convex portion 49 of the protection member 45 are engaged, the base end of the drive rod 56 is free. It is in a state of protruding from the connector connection unit 20b. At this time, the tip of the drive rod 56 is in contact with the rotating member 57.

  As shown in FIGS. 7A and 7B, the light guide cable 4 includes a light guide cable body 4a and a light guide connector 4b. The light guide connector 4b is connected to the light guide cable body 4a. The light guide connector 4b covers the outer periphery of a bundle of light guide fibers (not shown) bundled with a tubular body 60 made of a metal material. A locking ring 61 that expands and contracts in the radial direction is provided on a part of the outer peripheral surface of the tubular body 60. The locking ring 61 is urged outward in the radial direction so as to be locked to the connector receiving portion 34. In addition, the length of the tubular body 60 of the light guide connector 4b is longer than the length provided in the connector receiving portion 34 of the connector connection unit 20b. The length of the tubular body 60 is preferably smaller than twice the height of the connector connecting unit 20b so that the entire tubular body 60 is covered. That is, it is preferable that almost all of the outer peripheral surface of the tubular body 60 is covered with the protective member 45 when the light guide connector 4b is disposed in the connector receiving portion 34 of the connector connection unit 20b.

  Next, an operation of the endoscope light source device adapter 20 according to this embodiment will be described.

  The lens connector 31 and the positioning shaft member 32 of the light source device connection portion 20a of the adapter 20 shown in FIG. 4 are respectively inserted into the socket holes 24 and 25 through the illumination light emission ports 26 of the connector socket 22 of the light source device 3 shown in FIG. To do. Then, as shown in FIG. 6, the connection portion main body 30 of the light source device connection portion 20 a of the adapter 20 is connected to the illumination light emission port 26 of the light source device 3. At this time, the locking ring 33 of the lens connector 31 is locked to the wall portion of the socket hole 24 by the biasing force, and the locking ring 28 of the connection portion main body 30 is locked by the biasing force. 26 is locked to the wall portion. The lens connector 31 and the shaft member 32 are disposed in the socket holes 24 and 25, respectively. For this reason, the light source device connection portion 20a (connection portion main body 30) of the adapter 20 is prevented from rotating with respect to the illumination light exit port 26 of the light source device 3. That is, the adapter 20 is connected to the light source device 3 (see FIGS. 5 and 6).

  When the adapter 20 is connected to the light source device 3 in this way, the connector connection unit 20b of the adapter 20 is related to the annular convex portion 49 of the protection member 45 and the first annular groove 47 of the connector connection unit 20b. It is assumed that the vehicle is in a stopped standby state (standby position) (see FIG. 6).

  The connector connecting unit 20b is rotated around the shaft 36 together with the protective member 45. And the connector receiving part 34 which adapts to the light guide connector 4b of the endoscope 2 to be used is arrange | positioned on the same axis | shaft as the lens connector 31 of the light source device connection part 20a. Thereafter, the switching mechanism is operated to restrict the connector connection unit 20b from rotating with respect to the connection portion main body 30 of the light source device connection portion 20a.

  As shown in FIG. 7A, the light guide connector 4 b of the endoscope 2 is inserted into the connector receiving portion 34 of the connector connecting unit 20 b disposed on the lens connector 31. Then, one end of the rotating member (contact member) 57 comes into contact with the tip of the light guide connector 4b. The turning member 57 shown in FIG. 7A is rotated in the clockwise direction by the pushing force for pushing the light guide connector 4b into the connector receiving portion 34. Then, the drive rod 56 whose tip is in contact with the other end of the rotating member 57 moves along the passage. The movement direction of the drive rod 56 is a direction opposite to the direction in which the protection member 45 is pushed out, that is, the insertion direction in which the light guide connector 4 b is inserted into the connector receiving portion 34. Accordingly, the base end of the drive rod 56 protrudes with respect to the connector connection unit 20 b and presses the protective member 45 at the base end of the drive rod 56. This pressing direction is opposite to the insertion direction in which the light guide connector 4b is inserted into the connector receiving portion 34. At this time, the tubular body 60 of the light guide connector 4b protrudes outside the connector connection unit 20b.

  When the protection member 45 is pressed by the base end of the drive rod 56, the annular protrusion 49 of the protection member 45 gets over the first annular groove 47 of the connector connection unit 20b. That is, the engagement of the annular convex portion 49 engaged with the first annular groove 47 is released. The protection member 45 is urged by the spring 52 and slides to a set position where the annular convex portion 49 of the protection member 45 is engaged with the second annular groove 48. Then, the tubular body 60 of the light guide connector 4b is covered with the protective member 45.

  Then, as shown in FIG. 7B, the light guide connector 4b is inserted into the connector receiving portion 34 of the connector connecting unit 20b until no further insertion is possible. At this time, the connector receiving portion 34 is urged and locked radially outward by the locking ring 61 provided on the outer periphery of the tubular body 60 of the light guide connector 4b. That is, the light guide connector 4b is attached to the connector receiving portion 34 of the connector connection unit 20b.

  In this state, light is emitted from the lens 11 of the lens connector 31 through the aperture 12 from the lamp 11 of the light source device 3 to guide the light to the light guide fiber of the light guide connector 4 b covered with the tubular body 60. Then, the subject is irradiated from the distal end portion of the insertion portion 5 of the endoscope 2, the irradiated subject 15 is imaged by the CCD element in the camera head 7, and an image of the subject 15 is displayed on the monitor 9 through the CCU 8.

  On the other hand, when the light guide connector 4b is removed from the connector receiving portion 34 of the adapter 20, the operator of the endoscope 2 presses the protection member 45 from the set position in the connection (insertion) direction of the light guide connector 4b. Then, the annular convex portion 49 of the protection member 45 gets over the second annular groove 48 of the connector connection unit 20b. That is, the engagement of the annular convex portion 49 engaged with the first annular groove 47 is released. When the protective member 45 is further pressed, the base end of the drive rod 56 is brought into contact with the inner peripheral surface of the protective member 45. For this reason, the drive rod 56 is pressed in the distal direction along the passage 55. Then, the rotation member 57 shown in FIG. 7A with which the tip of the drive rod 56 is in contact rotates in the counterclockwise direction. And the annular convex part 49 of the protection member 45 is engaged with the 1st annular groove 47 of the connector connection unit 20b. At this time, the rotating member 57 and the tip of the light guide connector 4b come into contact with each other, and the light guide connector 4b is pushed out in the removal (removal) direction by the counterclockwise turning force of the rotating member 57. At this time, the light guide connector 4b is pulled out from the connector receiving portion 34 against the urging force of the locking ring 61. Thereafter, the light guide connector 4b is completely removed from the connector receiving portion 34 of the connector connection unit 20b. Then, the protection member 45 returns to the standby position with respect to the connector connection unit 20b.

As described above, according to this embodiment, the following effects can be obtained.
The adapter 20 is connected to the illumination light exit 26 of the light source device 3, and the light guide connector 4 b is attached to the connector receiving portion 34 with the protection member 45 of the adapter 20 in the standby state. Then, the turning member 57 can turn to move the drive rod 56 and press the protective member 45. Therefore, the engagement between the first annular groove 47 of the connector connection unit 20 b and the annular protrusion 49 of the protection member 45 is released, and the protection member 45 is moved along the connector connection unit 20 b by the biasing force of the spring 52. The two annular grooves 48 can be slid. When the second annular groove 48 and the annular protrusion 49 are engaged, the protection member 45 covers the tubular body 60 of the connector 4b. That is, when the light guide connector 4b is attached to the connector receiving portion 34, the tubular body 60 that can be heated to a high temperature can be covered. For this reason, it can prevent that an operator touches the high temperature tubular body 60 during use, and can be used safely. Even when the light guide connector 4b having a different shape is connected to the endoscope light source device adapter 20, the tubular body 60 of the light guide connector 4b can be prevented from being touched and used safely. Further, when the light guide connector 4b is attached, the protection member 45 can be automatically released from the locked state with a single touch. Further, when the light guide cable 4 is not used, that is, when the light guide connector 4b is not attached to the connector receiving portion 34 of the adapter 20, the adapter 20 is engaged with the first annular groove 47 and the annular convex portion 49. It is possible to enter a standby state. If it does so, the adapter 20 for endoscope light source devices can make the external appearance size compact.

  In this embodiment, the spring 52 is provided in the connector connection unit 20b, and the protective member 45 is slid with respect to the connector connection unit 20b by the urging force of the spring 52. In addition, in order to slide the protection member 45 to a desired position with respect to the connector connection unit 20b, the operator may hold the protection member 45 by hand and slide it.

  Further, the rotating member 57 cooperates with the drive rod 56 as a detection member for detecting that the light guide connector 4b is attached to the connector receiving portion 34 of the connector connection unit 20b and detecting that the attachment is released. Also works.

  As shown in FIGS. 3B and 5, four connector receiving portions 34 of the adapter 20 are provided in different shapes. The four connector receiving portions 34 are provided to receive the light guide connectors 4b having different shapes. FIGS. 8A to 8F show configuration diagrams when light guide connectors 4b having different shapes are respectively connected to the connector receiving portions 34 in the connector connection unit 20b. The tubular member 60 made of a metal material of the light guide connector 4b having a different shape includes a long one and a short one. 8A to 8D show a long tubular body 60 portion, and FIG. 8E and FIG. 8F show a short one. As for the short one, as shown in FIGS. 8E and 8F, the illumination light is diverged and the light is not efficiently transmitted only by the lens part (main lens part) 31b described above. One auxiliary lens portion 63 is provided in the vicinity of the lens portion 31 b in the connector receiving portion 34. One end of the sub lens portion 63 is disposed on the same axis in a state of approaching the lens portion 31b described above. The other end of the sub-lens portion 63 is disposed with the tip of the light guide connector 4b approaching.

  The tip of the light guide connector 4b approaches the connector connection unit 20b of the adapter 20 shown in FIGS. 8A to 8D to the vicinity of the lens portion 31b of the light source device connection portion 20a.

  Here, the connector receiving portion 34 shown in FIG. 8A is the same as the connector receiving portion 34 shown in FIG. 4 described above. The connector receiving portion 34 that receives the light guide connector 4b shown in FIG. 8B is slightly different from the connector receiving portion 34 shown in FIG. Different. That is, the tubular body 60 of the light guide connector 4b shown in FIG. 8A is thicker than the tubular body 60 of the light guide connector 4b shown in FIG.

  The connector receiving portions 34 of the adapter 20 that receive the light guide connector 4b shown in FIGS. 8C and 8D have the same shape. The shape of the connector receiving portion 34 of the adapter 20 shown in FIGS. 8A and 8C is different in the position of the step portion. The shapes of the connector receiving portions 34 of the adapter 20 shown in FIGS. 8B and 8C are different in thickness.

  Moreover, the connector receiving part 34 which receives the light guide connector 4b shown in FIG.8 (E) and FIG.8 (F) has the mutually same shape. As described above, the light guide connectors 4b having different shapes are mounted on the four connector receiving portions 34 shown in FIGS. For this reason, the switching mechanism is operated to rotate the connector connecting unit 20b relative to the light source device connecting portion 20a so that the axis of the connector receiving portion 34 to be used coincides with the lens connector 31.

  Therefore, the adapter 20 according to this embodiment can be used by appropriately selecting and attaching a plurality of types of light guide connectors 4b to the connector receiving portion 34 of the adapter 20.

Next, a second embodiment will be described with reference to FIG. This embodiment is a modification of the first embodiment, and the same members as those of the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.
As shown in FIGS. 9A and 9B, the connector connecting unit 20b of the adapter 20 according to this embodiment is brought into contact with the tip of the drive rod 56, and this drive rod 56 is placed in the passage 55. A pivoting member 70 bent in an L-shape is pivotally supported as a moving mechanism that moves along the axis. The rotating member 70 is formed in the same manner as the rotating member 57 described in the first embodiment at the portion that is in contact with the drive rod 56. When the light guide connector 4b is connected, the portion exposed on the connector receiving portion 34 and abutted against the tip of the light guide connector 4b is located at a position from the illumination light exit port 26 of the light source device 3 when the protective member 45 is in a standby state. A protrusion 70a bent at a substantially right angle is provided so as to prevent light emission (light leakage).

  For this reason, as shown in FIG. 9A, when the light guide connector 4b is not completely connected to the connector receiving portion 34 (in the standby state described above), the protruding portion 70a of the rotating member 70 is It protrudes so as to close the connector receiving portion 34. On the other hand, as shown in FIG. 9B, when the light guide connector 4b is connected to the connector receiving portion 34, the rotating member 70 and the protruding portion 70a are on the optical path of the light source device 3 (in the connector receiving portion 34). Removed from the side. For this reason, the illumination light emitted from the illumination light exit 26 of the light source device 3 enters the light guide fiber. Since other operations are the same as those of the first embodiment, description thereof is omitted.

As described above, according to this embodiment, the following effects can be obtained.
When the light guide connector 4b is not connected, light leakage of illumination light by the light source device 3 can be prevented. Since other effects are the same as those of the first embodiment, description thereof is omitted.

  Although several embodiments have been specifically described so far with reference to the drawings, the present invention is not limited to the above-described embodiments, and all the embodiments performed without departing from the scope of the invention are described. Including implementation.

  According to the above description, the following matters can be obtained. Combinations of the terms are also possible.

[Appendix]
(Additional Item 1) In order to connect a plurality of different types of light guide connectors provided in the endoscope for connection with the light source device to the illumination light exit port with a plurality of connection ports so as to be individually adapted. In the endoscope light source device adapter, a detection member that detects and rotates the connection of the light guide cable by pressing at the tip of the light guide connector when the light guide connector of a different shape is connected,
Along with the rotation of the detection means, in parallel with the light guide connector connection direction, the pushing member that presses,
A protective member that slides with an elastic member so as to cover the metal portion of the light guide connector in conjunction with the push member;
An adapter for an endoscope light source device, characterized by comprising:

    (Additional Item 2) One end of the detection member has an angle so that illumination light from the light source device is blocked when the light guide connector is not connected, and the detection member is separated from the light path of illumination light from the light source device when the light guide connector is connected. The adapter for an endoscope light source device according to appendix 1, wherein the adapter is used.

Schematic which shows the structure of the endoscope apparatus which has the adapter for endoscope light source devices concerning 1st Embodiment. Sectional drawing of the light source device to which the adapter concerning 1st Embodiment is connected. The adapter concerning 1st Embodiment is shown, (A) is a side view, (B) is the front view seen from the arrow 3B direction shown to (A). Sectional drawing which shows the adapter concerning 1st Embodiment. Schematic which shows the state which connected the adapter concerning 1st Embodiment to the light source device. FIG. 3 is a schematic cross-sectional view showing a state where the adapter according to the first embodiment is connected to the light source device. The adapter concerning 1st Embodiment is shown, (A) is schematic sectional drawing which shows the state when attaching a light guide connector to an adapter, (B) shows the state which attached the light guide connector to the adapter. FIG. The state which attached the light guide connector to the adapter concerning 1st Embodiment is shown, (A) thru | or (F) are each schematic sectional drawings. The adapter concerning 2nd Embodiment is shown, (A) is a schematic sectional drawing which shows the state when attaching a light guide connector to an adapter, (B) shows the state which attached the light guide connector to the adapter. FIG.

Explanation of symbols

  4 ... Light guide cable, 4a ... Light guide cable body, 4b ... Light guide connector, 20 ... Endoscope light source device adapter, 20a ... Light source device connection part, 20b ... Connector connection unit (adapter body), 26 ... Illumination light Output port, 31b ... lens part, 34 ... connector receiving part, 36 ... shaft, 37 ... ball bearing, 45 ... protective member, 47 ... first annular groove, 48 ... second annular groove, 49 ... annular convex part, 55 ... passage, 56 ... drive rod, 57 ... rotating member, 60 ... metal part

Claims (3)

In the endoscope light source device adapter, which is disposed between the illumination light exit port of the endoscope light source device and the light guide connector of the endoscope, and connects both,
An adapter body having a connector receiving portion into which the connector is removably inserted;
A protective cover provided so as to be slidable between a set position that protrudes with respect to the adapter body and covers the periphery of the connector, and a standby position on the adapter body side;
A protective cover moving mechanism that moves the protective cover from the standby position to the set position in conjunction with a connector connecting operation in which the connector is inserted into the connector receiving portion. adapter. The protective cover moving mechanism is
Urging means for urging the protective cover toward the set position;
Locking means for locking the protective cover at a standby position;
When the connector is inserted into the connector receiving portion in a state where the protective cover is disposed in the insertion track where the light guide connector is inserted into the connector receiving portion when the protective cover is in the standby position, the connector is brought into contact with the light receiving connector. A contact member pushed out from the insertion track of the connector,
The endoscope light source according to claim 1, further comprising: a pressing member that presses the protective cover in a direction to release the locking of the locking means in conjunction with the operation of the contact member. Device adapter.   The adapter for an endoscope light source device according to claim 1, wherein the adapter main body includes a plurality of connector receiving portions that respectively receive a plurality of types of light guide connectors having different shapes. .

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