JP2012050589A - Medical apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical apparatus which can easily vary a direction of the visual field of a medical instrument installed inside a body based on the operation from the outside the body, to a desired direction, and has excellent operability, and good responsiveness of the variable visual field based on the operation.SOLUTION: The medical apparatus 1 having an image pickup unit 2 retained and fixed in a body wall 102 of the inside an introduced body 101 and a plurality of operation wires 26-29 includes: an observation direction controller 3 for changing the observation direction of the image pickup section 2; a cable 4 in which the plurality of the operation wires 26-29 are inserted in a state that the image pickup section 2 is fixed and retained in the body wall 102, drawn out to the outside the body; a connecting mechanism 57, wherein retainers 26a-29a are arranged at end parts of the plurality of the operation wires 26-29, respectively and the cable 4 are connected outside thereof for retaining and connecting the retainers 26a-29a; and an observation direction operation section 5 for operating the observation direction controller from the outside the body.

Description

  The present invention relates to a medical device having an imaging device that is introduced into a body and observes a region to be examined.

  As is well known, an endoscope, which is a medical device, includes an imaging device. The endoscope is introduced into a body cavity of a patient, and various examinations and various treatments of an affected part in the body are performed based on an observation image captured by the imaging device. Is to do.

  Medical endoscopes are those that are introduced into the digestive organs such as the esophagus, stomach, large intestine, and duodenum, which are luminal ducts in the body, through the anus or mouth, and the body wall is punctured from the vicinity of the umbilicus There are those that penetrate the body wall and introduce into the abdominal cavity. The conventional endoscope has a long insertion portion, and this insertion portion is inserted into the digestive tract or the abdominal cavity. In recent years, there is also known a medical device that does not include an insertion portion but has an imaging device and observes a body part to be examined.

  For example, Patent Document 1 discloses a medical device that includes a medical device that is fixed to a body wall in a body cavity and includes an imaging unit, and a posture control unit that moves the posture of the medical device from the outside of the body. . In this conventional medical device, a technique for changing the visual field direction of the imaging unit by changing the posture of the medical device fixed to the body wall without contact by the magnetic force of the magnet by operating the posture control unit is disclosed. ing.

  Further, for example, Patent Document 2 discloses a medical device that includes a medical device that is fixed to a body wall in a body cavity by a fixing unit, includes an imaging unit, and includes a visual field adjustment unit that adjusts the visual field direction of the imaging unit. ing. This conventional medical device discloses a technique for changing the visual field direction of an imaging unit of a medical device by searching the visual field adjusting means with a treatment tool such as a grasping forceps from the inside of the body.

JP 2009-72367 A JP 2010-5338 A

  However, the technique of the conventional medical device disclosed in Patent Document 1 is a technique in which the magnetic force of the magnet provided in the posture control unit in the body is variably controlled from the outside of the body, and the view direction of the medical device is variably controlled. Depending on the thickness, the magnet separation distance, etc., there is a problem that it is difficult to control the posture of the medical device only with the magnetic force of the magnet. That is, since the medical device of Patent Document 1 is a variable control of the visual field direction of the medical device in a non-contact manner, the mechanical responsiveness according to the user's operation is poor and the angle of the medical device is changed to the desired visual field direction. There was a problem that it was difficult to adjust the operation of the attitude control unit.

  In addition, the technique of the conventional medical device disclosed in Patent Document 2 requires operability when performing treatment with a treatment of an affected area in the body because it is necessary to introduce a treatment tool into the body every time the visual field of the medical device is changed. There is a problem of being bad.

  Therefore, the present invention has been made in view of the above problems, and the visual field direction of a medical device installed in the body can be easily changed to a desired direction based on an operation from the outside of the body, and its operability is good. It is another object of the present invention to provide a medical device with good response performance with variable visual field based on operation.

  In order to achieve the above object, a medical device of the present invention is indwelled and fixed to a body wall of an introduced body, has an imaging means for imaging the body, a plurality of operation wires, and pulls the plurality of operation wires. An observation direction control means for changing the observation direction of the imaging means by relaxation; a cable that is pulled out to the outside of the body in a state in which the plurality of operation wires are inserted and the imaging means is detained and fixed to the body wall; A holding body disposed at each end of the plurality of operation wires; and a connection mechanism that connects the cable to the outside of the body, holds the holding body, and connects to the plurality of operation wires. Observation direction operation means for operating the observation direction control means from the outside.

  According to the present invention, the visual field direction of a medical device installed in the body can be easily changed to a desired direction based on an operation from the outside of the body, the operability is good, and the visual field variable response performance based on the operation. A good medical device can be provided.

The perspective view which shows the whole structure of the abdominal-camera system concerning the 1st Embodiment of this invention. The perspective view which shows the structure of the camera set in the abdominal cavity provided with the observation direction control unit Sectional drawing which shows the structure of the camera set in the abdominal cavity provided with the observation direction control unit FIG. 3 is a sectional view of the observation direction control unit taken along line IV-IV in FIG. The perspective view which shows the front-end | tip part structure of the composite cable with which the cover cap was mounted | worn with the same The front view which shows the tip part composition of the composite cable The perspective view which shows the front-end | tip part structure of the composite cable from which the cover cap was removed similarly The perspective view which shows an example which used the composite cable as the multilumen tube structure similarly The perspective view which shows the structure of an observation direction change operation unit similarly Side view showing the configuration of the observation direction changing operation unit Sectional drawing which shows the structure of the observation direction changing operation unit The figure for demonstrating a motion of four holding bodies of a composite cable similarly The perspective view for demonstrating a motion of the holding body guided by the anchor same as the above The figure for demonstrating the angle variable operation | movement of the camera installed in the abdominal cavity fixed to the abdominal wall similarly The figure for demonstrating the angle variable operation | movement of the camera set in the abdominal cavity fixed to the abdominal wall of the state seen from the direction different from FIG. The perspective view which shows a 1st modification and shows the structure of a cable latching member similarly The perspective view which shows the structure of the observation direction change operation unit by which the release lever of the cable latching member was arrange | positioned at the side part same as the above Sectional drawing which shows the state before locking a composite cable by a cable locking member Sectional drawing which shows the state which latched the composite cable with the cable latching member The perspective view which shows the 2nd modification and shows the electrical contact part which protrudes from the edge part of a composite cable similarly Sectional drawing which shows the state in which the electrical contact part of FIG. 20 was connected to the connector of the housing | casing similarly The perspective view which concerns on the 2nd Embodiment of this invention and shows the structure of the latching body arrange | positioned at the front-end | tip of a composite cable. Sectional drawing which shows the structure of the latching body arrange | positioned at the front-end | tip of a composite cable Sectional drawing which shows partially the structure of the observation direction change operation unit before a composite cable is connected Sectional drawing which shows partially the structure of the observation direction change operation unit after a composite cable is connected The perspective view which concerns on the 3rd Embodiment of this invention and shows the structure of the latching body arrange | positioned at the front-end | tip of a composite cable. The perspective view which shows an example structure which provided the electrical contact part in the nozzle | cap | die end surface arrange | positioned at the front-end | tip of a composite cable similarly The top view which shows the anchor mechanism part and cancellation | release operation member in an observation direction change operation unit same as the above The exploded perspective view showing the configuration of the anchor mechanism The perspective view for demonstrating the anchor mechanism part which hold | maintains a latching body similarly The perspective view for demonstrating the state of the anchor mechanism part which hold | maintained the latching body similarly The top view which shows the anchor mechanism part and release operation member of the state which hold | maintained the latching body similarly The figure for demonstrating the state which cancels | releases holding | maintenance of the latching body by an anchor mechanism part by a release operation member similarly The perspective view which concerns on the 4th Embodiment of this invention and shows the structure of the latching body arrange | positioned at the front-end | tip of a composite cable. Sectional drawing which shows the structure of the latching body arrange | positioned at the front-end | tip of a composite cable Sectional drawing for demonstrating the anchor mechanism part which hold | maintains a locking body similarly Sectional drawing for demonstrating the anchor mechanism part holding the latching body of a 1st modification same as the above Sectional drawing for demonstrating the anchor mechanism part holding the latching body of a 2nd modification same as the above The perspective view which shows a structure of an observation direction control unit according to the third modification. Partial sectional view showing the structure of the lever holding portion of the observation direction control unit The perspective view which shows the structure of an observation direction control unit concerning a 4th modification similarly. Sectional drawing for demonstrating the stopper structure holding an anchor mechanism part similarly The perspective view which concerns on the 5th Embodiment of this invention and shows the structure of the latching body arrange | positioned at a composite cable. Sectional drawing which shows the structure of the anchor mechanism part holding a locking body similarly Sectional drawing which shows the state which an anchor mechanism part hold | maintains a latching body, and moves The perspective view which concerns on the 6th Embodiment of this invention and shows the structure of the observation direction change operation unit to which a composite cable is connected. Sectional drawing which shows the structure of the latching body arrange | positioned at a composite cable same as the above Sectional drawing which shows the structure of the observation direction changing operation unit Sectional drawing which shows the structure of the observation direction change operation unit along the 4XIX-4XIX line of FIG. The perspective view which shows an example structure of the operation lever and the magnet of the holding body The perspective view which concerns on the 7th Embodiment of this invention and shows the structure of the latching body arrange | positioned at the front-end | tip of a composite cable. The perspective view which shows the structure of the anchor mechanism part which hold | maintains a latching body similarly Sectional drawing showing the structure of the anchor mechanism The perspective view which shows the structure of the cylindrical gear by which an anchor mechanism part is arrange | positioned similarly Sectional drawing which shows the structure of the observation direction changing operation unit The perspective view which shows the structure of an observation direction change operation unit similarly The perspective view which concerns on the 8th Embodiment of this invention and shows the edge part structure of a composite cable. The perspective view which shows the structure of a fixed unit similarly The top view which shows the structure of a wire branch part same as the above Sectional view showing the configuration of the fixed unit to which the composite cable is connected Sectional drawing of the wire branch part which shows an example of the holding means holding an operation wire

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, for example, a medical device that performs laparoscopic surgery is illustrated. In the following description, the drawings based on the respective embodiments are schematic, and the relationship between the thickness and width of each part, the ratio of the thickness of each part, and the like are different from the actual ones. It should be noted that the drawings may include portions having different dimensional relationships and ratios between the drawings.

(First embodiment)
First, an abdominal camera system which is a medical device of the present invention used for laparoscopic surgery will be described below with reference to FIGS. 1 to 21 relate to the first embodiment of the present invention, FIG. 1 is a perspective view showing the overall configuration of the abdominal camera system, and FIG. 2 shows the configuration of the intra-abdominal camera provided with the observation direction control unit. FIG. 3 is a cross-sectional view showing the configuration of an intraperitoneal camera provided with an observation direction control unit, FIG. 4 is a cross-sectional view of the observation direction control unit along line IV-IV in FIG. 3, and FIG. FIG. 6 is a front view showing the front end portion configuration of the composite cable with the cover cap attached, FIG. 6 is a front view showing the front end portion configuration of the composite cable, and FIG. 7 is a perspective view showing the front end portion configuration of the composite cable with the cover cap removed. 8 is a perspective view showing an example of the composite cable having a multi-lumen tube configuration, FIG. 9 is a perspective view showing the configuration of the observation direction changing operation unit, and FIG. 10 is a side showing the configuration of the observation direction changing operation unit. 11 is a cross-sectional view showing the configuration of the observation direction changing operation unit, FIG. 12 is a view for explaining the movement of the four holding bodies of the composite cable, and FIG. 13 is a view for explaining the movement of the holding body guided by the anchor. FIG. 14 is a diagram for explaining the angle changing operation of the intra-abdominal camera fixed to the abdominal wall, and FIG. 15 is the intra-abdominal installation fixed to the abdominal wall in a state different from FIG. FIG. 16 is a perspective view showing the configuration of the cable locking member, and FIG. 17 is a side view showing the release lever of the cable locking member. FIG. 18 is a sectional view showing a state before the composite cable is locked by the cable locking member, and FIG. 19 is a state in which the composite cable is locked by the cable locking member. A cross-sectional view showing 20 is a perspective view showing an electrical contact portion protruding from the end of the composite cable, showing a second modification, and FIG. 21 is a cross-sectional view showing a state where the electrical contact portion of FIG. 20 is connected to the connector of the housing. is there.

  An abdominal camera system (hereinafter sometimes simply referred to as a camera system) 1 which is a medical device according to the present embodiment is an imaging device (imaging means) serving as a medical device body as shown in FIG. Then, an intra-abdominal camera 2 (hereinafter simply referred to as a camera) 2 in which the composite cable 4 is extended from the upper center and an observation in which the composite cable 4 is inserted and the orientation of the camera 2 is changed to control the observation direction. An observation direction control unit 3 serving as a direction control mechanism (observation direction control means) and an extracorporeal device provided outside the body, which constitutes a repeater to which a composite cable 4 extending from the camera 2 is connected. An observation direction changing operation unit (hereinafter simply referred to as an operation unit) 5 serving as an observation direction operation device (observation direction operation means) of the camera 2 and a communication cable 6 extending from the operation unit 5 are connected. A camera control unit (hereinafter abbreviated as CCU) 7 constituting a video processor, which is one of the extracorporeal devices, and a monitor 9, which is one of the extracorporeal devices connected to the CCU 7 via the cable 8. Has mainly composed.

  The camera 2 and the observation direction control unit 3 according to the present embodiment serve as an introduction port into the abdominal cavity 101 punctured in the abdominal wall 102, and through a trocar (also referred to as a trocar) not shown here, It is introduced into the abdominal cavity 101, which is a body cavity (see, for example, FIG. 3). The camera 2 introduced into the abdominal cavity 101 is hooked to the abdominal cavity 101 by a puncture needle (not shown) and the like, and the composite cable 4 is hooked to the outside of the body so as to penetrate the abdominal wall 102. Pulled out. Further, the camera 2 is pulled up until the observation direction control unit 3 comes into contact with the inner surface of the abdominal wall 102 and is fixedly placed in the abdominal cavity 101.

Here, a specific configuration of the camera 2 according to the present embodiment will be described in detail with reference to FIGS. 2 and 3.
The camera 2 is disposed in the main body 11 serving as an exterior housing, on both sides of the imaging unit 15 serving as an imaging unit and on the both sides of the imaging unit 15, and electrically connected to the control unit 12. Here, a plurality of illumination units 16 of illumination means having LED light sources are incorporated.

  The imaging unit 15 includes a CCD or CMOS solid-state imaging device 17 mounted on a processing substrate, and an object disposed on the subject side (photographed object point side) that is in front (downward here) of the solid-state imaging device 17. And a lens group 18. The imaging unit 15 and each illuminating unit 16 are electrically connected to the communication cable 10 inserted into the composite cable 4.

  Further, the imaging unit 15 captures an image of a body part to be examined through a cover glass 11 a serving as an observation window disposed in the main body 11. The cover glass 11 a is disposed at a position opposite to the communication cable 10 extending from the upper center of the main body 11, that is, at the lower center of the main body 11.

Next, a specific configuration of the observation direction control unit 3 serving as the observation direction control mechanism (observation direction control means) of the present embodiment will be described in detail with reference to FIGS.
As shown in FIGS. 2 and 3, the observation direction control unit 3 according to the present embodiment includes two substantially rectangular blocks, and a substantially spherical member interposed between these blocks. ing.

  More specifically, the observation direction control unit 3 includes a camera fixing portion 21 serving as one block body on the camera 2 side located below (downward viewed toward the paper surface) and one end of the composite cable 4. Here, the abdominal wall fixing part 22 which is the other block body connected to the upper surface (upward as viewed in the drawing) and each fixing part so that the fixing parts 21 and 22 are separated from each other by a predetermined distance. The rotating part 23 interposed between 21 and 22 is mainly configured.

  The camera fixing portion 21 is formed of, for example, a metal hard material and is on the camera 2 side. A circular surface 21a formed on the lower surface of the camera fixing portion 21 so as to substantially match the outer shape of the main body portion 11 of the camera 2 and a rotating surface. A spherical concave portion 21b having a crown shape formed on the upper surface here so as to substantially coincide with the spherical surface of the outer surface of the rotating portion 23, and extending from the camera 2 in the vertical direction at a substantially central position. And a hole 21c through which the communication cable 10 is inserted and arranged.

  Further, the end portions of the four operation wires 26 to 29 inserted into the composite cable 4 are connected and fixed to the upper surface of the camera fixing portion 21. The end portions of these four operation wires 26 to 29 are at positions farther to the edge side than the spherical concave portion 21 b and are at substantially equal intervals around the center of the camera fixing portion 21, that is, the camera fixing portion 21. It is connected and fixed at a position shifted from each other by about 45 ° around the center.

  Note that the camera fixing portion 21 holds the camera 2 in a predetermined direction by the arcuate surface 21a coming into surface contact with and engaging with the outer surface portion of the upper center of the main body portion 11 of the camera 2.

  The abdominal wall fixing part 22 is also formed of, for example, a metal hard material and is on the rotating part 23 side. Here, a spherical crown shape is formed on the lower surface so as to substantially match the spherical surface of the outer surface of the rotating part 23. The spherical recess 22a and the hole 22b communicating with the composite cable 4 are formed. The hole 22b of the abdominal wall fixing part 22 is formed so as to penetrate in the vertical direction at a substantially central position of the abdominal wall fixing part 22, and the communication cable 10 extending from the camera 2 is inserted therethrough. The hole portion 22b branches from the upper halfway portion into four directions at substantially equal intervals around the center (direction shifted by about 45 ° around the center), and the four wires through which the operation wires 26 to 29 are respectively inserted. It communicates with the insertion path.

  As shown in FIG. 4, these branched four wire insertion paths are located farther on the edge side than the spherical recess 22a, and are located at substantially equal intervals around the center of the abdominal wall fixing portion 22 (each other around the center). 3 are formed in an L shape extending in the horizontal direction so as to communicate with the hole 22b and extending downward in the abdominal wall fixing portion 22, as shown in FIG. ing. Further, pulleys 24 for reducing sliding resistance of the operation wires 26 to 29 in the wire insertion passages are provided at the corners of the four wire insertion passages in the abdominal wall fixing portion 22 and the opening portions on the hole 22b side. 25 is provided.

  The rotating part 23 is also made of, for example, a metal hard material, and a wire insertion hole part 23a through which the communication cable 10 is inserted is formed at the center thereof. The wire insertion hole 23a is formed in a tapered conical shape from the upper side of the abdominal wall fixing part 22 in this case to the middle part toward the camera fixing part 21 in the lower side.

  The camera fixing portion 21 and the abdominal wall fixing portion 22 are separated from each other with a predetermined clearance L when the surfaces facing each other, that is, the upper surface of the camera fixing portion 21 and the lower surface of the abdominal wall fixing portion 22 are parallel to each other. (See FIG. 3). At this time, the camera fixing unit 21 is in an initial state (neutral state) in which the pulling / relaxing operation by the operation wires 26 to 29 is not performed.

  That is, the observation direction control unit 3 rotates the abdominal wall fixing portion 22 with respect to the camera fixing portion 21 when the upper surface of the abdominal wall fixing portion 22 is in contact with the abdominal wall 102 so as to make surface contact (see FIG. 3). The center of the part 23 can be inclined as a fulcrum.

  The observation direction control unit 3 having such a configuration rotates around the center of the rotating portion 23 as a fulcrum within a range in which the camera fixing portion 21 is in contact with the abdominal wall fixing portion 22 in a state where it is placed and fixed to the abdominal wall 102 in the abdominal cavity 101. It has a movable configuration. The rotation operation of the camera fixing portion 21 with respect to the abdominal wall fixing portion 22 is performed by pulling and loosening the four operation wires 26 to 29 described above.

  As a result, in the state in which the abdominal wall 102 in the abdominal cavity 101 is indwellingly fixed, the outer surface portion of the upper center of the main body 11 of the camera 2 is engaged and held on the circular arc surface 21a of the camera fixing portion 21. Along with the camera fixing unit 21 that is tilted by pulling and loosening the wires 26 to 29, the camera 2 is also interlocked to tilt its posture. Therefore, the observation direction of the photographing light incident on the imaging unit 15 of the camera 2 (inclination of the photographing optical axis O) is changed. That is, the shooting direction of the camera 2 indwelling and fixed in the body is changed by the pulling and loosening operation of the four operation wires 26 to 29 from the outside of the body.

Next, a specific configuration of the composite cable 4 according to the present embodiment will be described in detail with reference to FIGS.
As shown in FIG. 5, a drip-proof cover cap 30 is provided at the extended end from the camera 2 at the distal end portion of the composite cable 4. As described above, a loop for hooking a puncture needle or the like (not shown) punctured into the abdominal cavity 101 to pull out the composite cable 4 so as to penetrate the abdominal wall 102 as described above. (See FIG. 2) of the retaining wire 31 is provided.

In the composite cable 4, the communication cable 10 and the four operation wires 26 to 29 are inserted and arranged in the flexible tube that is the outer skin, as described above. A hard substantially cylindrical base 32 made of metal or the like is disposed at the distal end portion of the composite cable 4.
As shown in FIGS. 5 to 7, the base 32 is formed with a keyway 33 along the longitudinal direction, and a plurality of electrical contacts to which the communication cable 10 is connected are insulated by a synthetic resin or the like in the middle. And an engaging concave portion 35 that is a circumferential groove having a semicircular cross section around the outer peripheral longitudinal direction on the rear side of the electric contact portion 34. Further, at the tip of the base 32, four holding bodies 26a to 29a having a triangular block shape (cone block shape) connected to respective ends of the operation wires 26 to 29 are disposed.

  The four operation wires 26 to 29 are in a state where no tension is applied in the composite cable 4 in a state where the holding bodies 26a to 29a are located at the end face positions of the base 32 as shown in FIG. It is inserted and arranged with a predetermined play. That is, the composite cable 4 from which the cover cap 30 has been removed is, as shown in FIG. 7, a predetermined length that leads to the four operation wires 26 to 29 so that the holding bodies 26a to 29a can be easily separated from the base 32. The insertion is located.

  Further, as shown in FIG. 8, the composite cable 4 is a multi-lumen tube in which the communication cable 10 and the four operation wires 26 to 29 are individually inserted, and in this case, five wire insertion passages are formed. Thus, the communication cable 10 and the four operation wires 26 to 29 can be prevented from being entangled.

Next, a specific configuration of the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment will be described in detail with reference to FIGS. 9 to 13.
As shown in FIG. 9, the operation unit 5 includes a casing 41 that is an outer cylindrical main body portion, and a main body that is externally fitted to the casing 41 so as to be movable up and down within a predetermined range. And a leg portion 42 constituting a position adjusting portion.

  From the upper surface of the housing 41, a rod-like operation lever 43 that is rotatably disposed protrudes. The operation lever 43 is covered with a soft cover boot 44 having a triangular pyramid shape from midway to the upper surface portion of the housing 41.

  The leg portion 42 is formed of a hard member, and is arranged at a point-symmetrical position with respect to the center of the substantially disc-shaped bottom surface portion so as to extend upward from the bottom surface portion. It has two arc-shaped arm portions 42a along the shape of the part. As shown in FIG. 10, a plurality of convex portions 42b are formed along the horizontal direction on the inner surface portions of these two arm portions 42a. In addition, a plurality of concave portions 41 a with which the plurality of convex portions 42 b are engaged are formed on the outer surface portion of the casing 41 with which the arm portions 42 a of the leg portions 42 come into contact.

  That is, the relative positions of the casing 41 and the legs 42 in the vertical direction are maintained by engaging the plurality of concave portions 41a of the casing 41 with the plurality of convex portions 42b of the two arm portions 42a.

  As shown in FIG. 11, the operation lever 43 is connected to a sphere 45 whose lower end is in contact with and held by a spherical crown-shaped recess 50 formed in the upper portion of the housing 41. As described above, the operation lever 43 is disposed so as to be rotatable with respect to the housing 41 by the spherical body 45 being held in contact with the concave portion 50 of the housing 41.

  Further, four wires 46 to 49 are extended from the upper part of the surface portion of the sphere 45. These four wires 46 to 49 have respective one end portions so as to extend in four substantially equal intervals around the central axis of the operation lever 43 (four directions shifted from each other by about 45 ° around the central axis). Is connected to the sphere 45.

  The casing 41 is formed with four wire insertion passages 51 through which each of the four wires 46 to 49 is inserted and opened at the top of the recess 50. Each of these four wire insertion passages 51 extends in the horizontal direction around the central axis in the vertical direction of the casing 41 and extends vertically in the casing 41 downward. The four wire insertion passages 51 extend in the horizontal direction from the vertical direction toward the center of the casing 41 at the lower part of the casing 41.

  As described above, the wires 46 to 49 are inserted into the four wire insertion passages 51 formed in the housing 41 so as to communicate in the horizontal and vertical directions. And the pulley 52 which reduces the sliding resistance of each wire 46-49 penetrated to each wire insertion path 51 is provided in the corner | angular part in which each wire insertion path 51 in the housing | casing 41 was formed.

  In the four wires 46 to 49 inserted and arranged in each wire insertion passage 51, a rectangular parallelepiped rack 54 having gears formed on one surface is disposed in a vertical portion in the housing 41. The rack 54 communicates with the wire insertion passage 51 and is disposed in a guide hole 53 which is a rectangular parallelepiped hole formed in a vertical portion, and the guide hole 53 guides the vertical movement.

  The casing 41 has a pawl block that stops the downward movement of the rack 54 by engaging the claw portion with the gear of the rack 54 by the biasing force of the coil spring 55a so as to be exposed from the outer peripheral portion. A release button 55 that can be rotated is disposed. That is, when the release button 55 is pushed against the urging force of the coil spring 55 a and rotates, the engagement of the claw portion with the gear of the rack 54 is released, and the rack 54 is free in the guide hole 53. . The rack 54 and the release button 55 constitute a so-called ratchet mechanism that stops the downward movement of the rack 54 disposed in the guide hole 53.

  In addition, the four wires 46 to 49 are anchors that serve as a connection mechanism that engages and connects the holding bodies 26 a to 29 a of the composite cable 4 to the lower end portions that are inserted and arranged in the housing 41. An anchor 57 constituting the mechanism unit is connected. These four anchors 57 are disposed in a space portion 56 that communicates with each wire insertion passage 51.

  In addition, each wire 46 to 49 has an anchor 57 abutting on one end thereof, and a bias spring 58 that biases each anchor 57 toward the center of the housing 41 is externally inserted. Each anchor 57 is guided by the wall surface (inner wall) of the housing 41 that forms the space portion 56 to move forward and backward in the center direction and outward of the housing 41.

  The upper surface of the inner surface of the casing 41 forming the space 56 is formed with four arcuate surfaces in four directions (four directions shifted from each other by about 45 ° around the center) at substantially equal intervals around the center. ing. These four circular arc surfaces constitute a holding body guide surface 56a that moves to a position where the ends of the holding bodies 26a to 29a of the composite cable 4 come into contact with each anchor 57.

  The housing 41 communicates with the space 56 from the center of the bottom surface, and is formed with a cable arrangement hole 41b into which the composite cable 4 is inserted. The cable arrangement hole 41b is provided with a projection (not shown). This protrusion engages with a key groove 33 formed in the base 32 of the composite cable 4, and the insertion position of the composite cable 4 into the housing 41 in the direction around the axis is positioned. A hole 42c through which the composite cable 4 is inserted is also formed at the bottom center of the leg 42.

  An electric connector 59 that is electrically connected to the electrical contact portion 34 of the composite cable 4 and a ball plunger 60 that locks the locking recess 35 of the composite cable 4 are arranged in the cable arrangement hole 41 b of the housing 41. It is installed. Thus, in the state where the composite cable 4 is connected to the operation unit 5, the electrical contact portion 34 is electrically connected to the electrical connector 59, and the ball plunger 60 that locks the locking recess 35 causes the operation of the operation unit 5. It is fixedly connected to the housing 41.

  By the way, when the composite cable 4 is connected to the operation unit 5, the composite cable 4 is pushed once in the internal direction (upward) in the housing 41 by the user. That is, the locking recess 35 of the composite cable 4 exceeds the ball plunger 60 of the housing 41 and the composite cable 4 is pushed into the housing 41.

  At this time, the holding bodies 26a to 29a of the composite cable 4 are guided with their respective end portions in contact with the respective holding body guide surfaces 56a. As shown in FIG. Fall down towards the four sides.

  As shown in FIG. 13, each of the four anchors 57 includes a rectangular parallelepiped block body 57a to which the wires 46 to 49 are connected to one end, and an arc extending from the upper surface of the other end of the block body 57a. It has two guide arms 57b provided and a slit 57c formed by these guide arms 57b.

  That is, when the composite cable 4 is pushed into the housing 41, the holding bodies 26 a to 29 a are guided so that the upper end portions (tip portions) come into contact with the respective holding body guide surfaces 56 a of the housing 41 and fall down. The lower end portion (base end portion) comes into contact with the two guide arms 57b of the anchor 57, and falls into the upper surface of the block body 57a. At this time, the operation wires 26 to 29 connected to the holding bodies 26a to 29a are introduced into the slits 57c between the two guide arms 57b.

  Then, the composite cable 4 is slightly pulled out of the housing 41 by the user to a position where the locking recess 35 and the ball plunger 60 are engaged. Then, each of the holding bodies 26 a to 29 a is locked to the anchors 57 with the ends to which the operation wires 26 to 29 are connected abutting against the two guide arms 57 b of the anchors 57.

  The electrical connector 59 is electrically connected to the internal wiring of the communication cable 6 (see FIG. 1) connected to the CCU 7, and the camera 2 and the CCU 7 are connected in a state where the composite cable 4 is connected to the operation unit 5. Are electrically connected.

  As described above, the camera system 1 of the present embodiment configured as described above has a camera 2 and a trocar (not shown) in which the observation direction control unit 3 is punctured in the abdominal wall 102. The body cavity is introduced into the abdominal cavity 101. Then, the latching wire 31 of the cover cap 30 covered on the end of the composite cable 4 is latched by a puncture needle or the like (not shown), and the composite cable 4 is pulled out of the body so as to penetrate the abdominal wall 102. Then, the cover cap 30 is removed from the composite cable 4, and the end of the composite cable 4 provided with the cap 32 is connected to the operation unit 5.

  Thereafter, in the operation unit 5, the bottom surface portion of the leg portion 42 is placed on the abdominal wall 102, and the casing 41 is pulled upward with respect to the leg portion 42 to adjust the overhang of the composite cable 4. That is, the composite cable 4 connected to the housing 41 is pulled as the housing 41 moves upward. At this time, as shown in FIGS. 14 and 15, the adjustment of the upward movement of the casing 41 is performed by pulling up the composite cable 4 until the observation direction control unit 3 comes into contact with the body inner surface of the abdominal wall 102. The camera 2 is placed and fixed in the abdominal cavity 101 via the observation direction control unit 3.

  As described above, the camera system 1 according to the present embodiment has the operation unit disposed on the abdominal wall 102 outside the body in a state where the camera 2 is placed and fixed on the abdominal wall 102 in the abdominal cavity 101 via the observation direction control unit 3. When the operation lever 43 is tilted, the observation (observation) direction of the camera 2 (the direction of the photographing optical axis O) can be changed.

  More specifically, in the operation unit 5, when the operation lever 43 is tilted, the sphere 45 rotates, and the wires 46 to 49 connected to the rotating sphere 45 are pulled and loosened. When these wires 46 to 49 are pulled, the anchor 57 of the operation unit 5 moves forward and backward from the center of the housing 41 against the biasing force of the bias spring 47 according to the tilting direction of the operation lever 43. To do. And any of the operation wires 26-29 is pulled with the holding bodies 26a-29a latched by the anchor 57 which moved forwards and backwards.

  That is, according to the tilting operation of the operation lever 43 of the operation unit 5, one of the four operation wires 26 to 29 is pulled and loosened, and the camera 2 is moved to the abdominal cavity via the observation direction control unit 3 as shown in FIG. In the state in which it is detained and fixed to the abdominal wall 102 in 101, the orientation angle in the short direction of the body portion 11 of the camera 2 and the orientation angle in the longitudinal direction of the body portion 11 of the camera 2 are controlled as shown in FIG. By changing the inclination with the center of the rotation unit 23 of the unit 3 as a fulcrum, the observation (field of view) direction of the imaging unit 15 of the camera 2 can be easily changed to a user's desired direction.

  In addition, in the camera system 1, one of the four operation wires 26 to 29 is pulled or loosened according to the tilting operation of the operation lever 43 of the operation unit 5, so that the observation direction control is performed based on the operation of the operation lever 43. Since the response to the tilting operation of the camera fixing unit 21 of the unit 3 is fast, there is also an advantage that the operation response performance when the observation (field of view) direction of the imaging unit 15 of the camera 2 is changed is good.

  As described above, the camera system 1 according to the present embodiment observes (views) the camera 2 installed in the abdominal cavity 101 inside the body based on the tilting operation of the operation lever 43 of the operation unit 5 from the outside of the body. Since the direction can be easily changed to the direction desired by the user, the operability is improved, and the response performance of changing the observation (field of view) based on the operation can be improved.

  Since the rack 54 provided on the pulled wires 46 to 49 is engaged with the claw portion of the release button 55 by the tilting operation of the operation lever 43 of the operation unit 5, the movement position where the wires 46 to 49 are pulled. Is stopped and held. Thereby, the moving position of the pulled operation wires 26 to 29 is also stopped and held, and the observation (field of view) direction of the imaging unit 15 of the camera 2 that has been changed is maintained. That is, the rack 54 and the release button 55 constitute a visual field fixing means for fixing the visual field of the camera 2 here.

  Further, when the user presses the release button 55, the meshing with the rack 54 is released, and the wires 46 to 49 are relaxed by the biasing force of the bias spring 47. Thereby, the operation wires 26 to 29 are also relaxed, and the user can cancel the maintenance of the observation (field of view) direction of the imaging unit 15 of the camera 2.

  When the composite cable 4 is removed from the operation unit 5 after using the camera system 1, the user moves the casing 41 of the operation unit 5 to the leg portion 42 side (downward side), and releases all the release buttons 55. Press. At this time, each anchor 57 in the housing 41 receives the biasing force of the bias spring 58 and moves to the initial position in the center direction of the housing 41.

  Then, the user once inserts the composite cable 4 in the inner direction (upward direction) of the casing 41, whereby the holding bodies 26 a to 29 a are pulled by the operation wires 26 to 29, and the anchors 57 are locked. Canceled. That is, the operation wires 26 to 29 are pulled by the camera 2 in the abdominal cavity 101 and the observation direction control unit 3 in the vertical drop direction due to gravity, so that the holding bodies 26a to 29a are connected to the holding body guide surface 56a. It moves to the base 32 side of the composite cable 4 along the guide arm 57b. As a result, the holding bodies 26a to 29a are unlocked by the anchors 57, so that the user applies a predetermined force that the locking recess 35 of the composite cable 4 exceeds the ball plunger 60 of the housing 41, so that the composite The cable 4 can be easily pulled out from the housing 41.

(First modification)
Note that the operation unit 5 is inserted into the housing 41 by moving forward and backward as shown in FIGS. 16 to 19, for example, instead of the ball plunger 60 that locks the locking recess 35 of the composite cable 4. Alternatively, the cable locking member 61 that can fix and release the connection of the composite cable 4 may be provided.

  The cable locking member 61 includes a locking body 63 formed in a concave shape by a notch 63a so as to fit in the locking recess 35 of the composite cable 4 on one side, and a release lever extending from the side of the locking body 63 64 and a rod-like holding portion 65 that protrudes rearward from the locking body 63 and holds the bias spring 62 by extrapolation.

  As shown in FIG. 17, the release lever 64 of the cable locking member 61 protrudes from a long groove 41 d formed in the outer peripheral portion of the housing 41 so that the user can advance and retract. Further, for example, a rectangular hole portion 42 d is formed in the arm portion 42 a of the leg portion 42 so as to prevent vertical movement of the casing 41 and interference of the release lever 64.

  As shown in FIGS. 18 and 19, the cable locking member 61 is formed in the housing 41 so as to project and retract toward the cable arrangement hole 41 b formed in the housing 41 by the advance / retreat operation of the release lever 64. It is arrange | positioned so that it can advance and retreat freely.

  In the cable locking member 61, the notch 63 a (see FIG. 16) is fitted into the locking recess 35 of the base 32 of the composite cable 4 inserted into the cable placement hole 41 b by the biasing force of the bias spring 62. The composite cable 4 is held so as not to come off from the housing 41.

  The user operates the release lever 64 against the biasing force of the bias spring 62 to move the cable locking member 61 forward and backward, thereby releasing the connection between the casing 41 of the operation unit 5 and the composite cable 4. can do.

  Further, the connection and fixing of the composite cable 4 and the housing 41 are the ball plunger 60 or the cable locking member 61 that locks the locking recess 35, but the present invention is not limited to this. It is good also as the uneven | corrugated fixation which arrange | positioned the convex part which only latches 35 to the cable arrangement | positioning hole 41b.

(Second modification)
As shown in FIGS. 20 and 21, the composite cable 4 may be a rod-shaped electrical contact portion 34 a extending from the tip of the base 32. Furthermore, long groove-like recesses 26b to 29b are formed in the four holding bodies 26a to 29a in accordance with the shape of the electrical contact portion 34.

  The four holding bodies 26a to 29a are formed so that the concave portions 26b to 29b are electrically contact portions when the composite cable 4 is disposed adjacent to the tip portion of the base 32 before connection to the operation unit 5. 34 is engaged. The housing 41 of the operation unit 5 is provided with a female electrical connector 59a into which the rod-shaped electrical contact portion 34a is electrically inserted and connected at a portion where the four holding body guide surfaces 56a of the space portion 56 intersect. ing.

(Second Embodiment)
Next, a second embodiment according to the abdominal camera system of the present invention will be described below with reference to FIGS. FIGS. 22 to 25 relate to the second embodiment of the present invention, FIG. 22 is a perspective view showing the structure of the locking member disposed at the tip of the composite cable, and FIG. 23 is the tip of the composite cable. FIG. 24 is a cross-sectional view partially showing the structure of the observation direction changing operation unit before the composite cable is connected, and FIG. 25 is a view showing the connection of the composite cable. It is sectional drawing which shows partially the structure of the subsequent observation direction change operation unit.
Moreover, in the following description, the same code | symbol is used about the component same as the camera system 1 of 1st Embodiment mentioned above, and detailed description of these components is abbreviate | omitted.

  The camera system 1 according to the present embodiment includes four holding bodies 71 to 74 disposed on the end face portion of the base 32 of the composite cable 4 extending from the camera 2 shown in FIGS. 22 and 23. As shown in FIGS. 24 and 25, the holding bodies 71 to 74 are connected by moving forward and backward in the horizontal direction (lateral direction) by pulling and loosening the wires 46 to 49 in the casing 41 of the operation unit 5. An anchor mechanism portion 75 which is a connecting mechanism for holding and connecting is provided.

  More specifically, each of the four holding bodies 71 to 74 of the present embodiment has a shape obtained by dividing a cylindrical block into four equal parts around the center. The four holding bodies 71 to 74 are formed with engagement hole portions 71 a to 74 a that open at the center of the respective upper surfaces (see FIGS. 23 and 24). The holders 71 to 74 are connected to the operation wires 26 to 29 inserted into the composite cable 4.

  As described above, the operation unit 5 serving as the observation direction operation device (observation direction operation means) according to the present embodiment includes four tubular anchor mechanism portions 75 connected to the respective holding bodies 71 to 74. Arranged so as to extend in four directions with substantially equal intervals around the center (four directions shifted from each other by about 45 °), each of which is arranged to be able to advance and retract in the horizontal direction (lateral direction). (See FIG. 24).

  These four anchor mechanism portions 75 include a substantially cylindrical holding member connecting portion 76 disposed at one end of the tube, a connecting pin 77 protruding from the lower surface of the holding member connecting portion 76, A rod body 78 that is inserted in the center and has wires 46 to 49 connected to the ends thereof. In addition, a bias spring 79 is disposed in the tubular body of each anchor mechanism portion 75 so as to be extrapolated to the rod body 78.

  In addition, each anchor mechanism part 75 has, for example, a cross-sectional D-cut shape at the tube portion. Further, the bias spring 79 biases the anchor mechanism portion 75 toward the center of the housing 41. In addition, each connecting pin 77 has an engagement hole 71a of each holding body 71 to 74 of the composite cable 4 connected to the housing 41 at an initial position where the anchor mechanism 75 is not pulled by each wire 46 to 49. To 74a.

  The housing 41 communicates with the space 56 and the wire insertion passage 51 and has four guide holes 56b formed in the horizontal direction (lateral direction) for guiding the forward and backward movement of the anchor mechanism 75. These four guide holes 56b are formed so as to extend in four directions at substantially equal intervals around the center of the casing 41 (four directions shifted from each other by about 45 ° around the center).

  The guide hole 56b has a D-cut shape in accordance with the cross section of the tubular body of the anchor mechanism portion 75, and guides the anchor mechanism portion 75 so that the anchor mechanism portion 75 does not rotate around the longitudinal axis. Thereby, the anchor mechanism part 75 moves forward and backward along the guide hole 56b in a state where the connecting pin 77 of the holding body connecting part 76 is always positioned below.

  The operation unit 5 serving as the observation direction operation device (observation direction operation means) according to the present embodiment is configured such that when the wires 46 to 49 are pulled and loosened in response to a tilting operation of the operation lever 43 (not shown here), the casing. Each anchor mechanism part 75 in 41 is configured to move forward and backward in the horizontal direction (lateral direction). In addition, each component of the camera system 1 in the present embodiment is the same as that in the first embodiment.

  In the configuration of the camera system 1 according to the present embodiment described above, the composite cable 4 is connected to the housing 41 of the operation unit 5 and at the same time, the holding bodies 71 to 74 are coupled to the anchor mechanism unit 75. That is, the composite cable 4 is inserted to the position where the locking recess 35 is locked by the ball plunger 60 disposed in the cable arrangement hole 41b of the housing 41, and at the same time, the engagement of the holding bodies 71 to 74 is increased. The connecting pin 77 of the anchor mechanism portion 75 is inserted into the hole portions 71a to 74a (see FIG. 25).

  In other words, when the composite cable 4 is connected to the housing 41 of the operation unit 5, the connection pin 77 of the anchor mechanism portion 75 is inserted into the engagement holes 71a to 74a of the holding bodies 71 to 74 at a time (with one touch). The holding bodies 71 to 74 are connected to the anchor mechanism portion 75.

  When the operation lever 43 of the operation unit 5 is tilted, each anchor mechanism portion 75 moves forward and backward in the horizontal direction (lateral direction) according to the tilt direction of the operation lever 43. Therefore, each holding body 71 to 74 connected to each anchor mechanism portion 75 also moves back and forth in the horizontal direction (lateral direction) within the space portion 56 of the housing 41. Thus, the operation wires 26 to 29 connected to the holding bodies 71 to 74 are pulled and loosened, and the observation (field of view) direction of the imaging unit 15 of the camera 2 is changed.

  Of course, the camera system 1 of the present embodiment configured as described above has the same effect as the first embodiment, and is in the body based on the tilting operation of the operation lever 43 of the operation unit 5 from the outside of the body. A configuration in which the observation (field of view) direction of the camera 2 installed in the abdominal cavity 101 can be easily changed to a user's desired direction, so that the operability is improved and the response performance of observation (field of view) change based on the operation is good. It can be.

(Third embodiment)
Next, a third embodiment according to the abdominal camera system of the present invention will be described below with reference to FIGS. FIGS. 26 to 33 relate to the third embodiment of the present invention, FIG. 26 is a perspective view showing the structure of the locking member disposed at the tip of the composite cable, and FIG. 27 is the tip of the composite cable. FIG. 28 is a plan view showing an anchor mechanism portion and a release operation member in the observation direction changing operation unit, and FIG. 29 is a plan view showing the anchor mechanism portion. FIG. 30 is a perspective view for explaining an anchor mechanism portion that holds a locking body, FIG. 31 is a perspective view for explaining a state of the anchor mechanism portion that holds the locking body, and FIG. 32 is a plan view showing the anchor mechanism portion and the release operation member in a state in which the locking body is held, and FIG. 33 is a view for explaining a state in which the holding of the locking body by the anchor mechanism portion is released by the release operation member. .
Also in the following description, the same reference numerals are used for the same components as those of the camera system 1 of the first embodiment described above, and detailed descriptions of those components are omitted.

  The camera system 1 according to the present embodiment has four substantially triangular pyramid-shaped holding bodies 81 disposed on the end face portion of the base 32 of the composite cable 4 extending from the camera 2 as shown in FIGS. 28 and 29, as shown in FIGS. 28 and 29, the wires 46 to 49 are moved forward and backward in the casing 41 of the operation unit 5 by the pulling and loosening operation, and the holding bodies 81 to 84 are hooked. An anchor mechanism portion 85 which is a connecting mechanism for stopping and connecting is provided.

  More specifically, each of the four holding bodies 81 to 84 of the present embodiment has a substantially triangular pyramid shape (cone shape), and around the center of the base 32 provided at the end of the composite cable 4. At the position divided into four equal parts, it is disposed in contact with the end face of the base 32. The operation wires 26 to 29 inserted into the composite cable 4 are connected to the center of the bottom surface of the four holding bodies 81 to 84. In addition, the taper which made hemispherical shape etc. is formed in the bottom face part of each holding body 81-84.

  Further, the base 32 disposed at the end portion of the composite cable 4 is formed with four hole portions 32 a that open at the end face and through which the operation wires 26 to 29 are inserted. The hole 32 a has a smaller diameter than the bottom surfaces of the four holding bodies 81 to 84, and the four holding bodies 81 to 84 are held in contact with the end face of the base 32. . In addition, as shown in FIG. 27, you may arrange | position the electrical contact part 34b connected to the electrical connector in the housing | casing 41 in the center part of the end surface of the nozzle | cap | die 32 here.

  As shown in FIG. 28, the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment has four anchor mechanism portions 85 that hold and hold the holding bodies 81 to 84. It extends in four directions at approximately equal intervals around the center of the casing 41 (four directions that are offset from each other by about 45 °), and each of them is guided straight in the casing 41 in the vertical direction (vertical direction). It is arranged so as to freely advance and retreat in a state.

  Further, a release operation member 90 for releasing the state in which the holding bodies 81 to 84 are hooked and held by the four anchor mechanism portions 85 is rotatably disposed in the housing 41. The release operation member 90 includes a release lever 91 whose end protrudes from the side peripheral surface of the housing 41, four L-shaped arms 92, a release lever 91, and the four arms 92 at the center of the housing 41. And a shaft body 93 that is pivotally supported by the portion.

  The four arms 92 are arranged so as to extend in four directions at substantially equal intervals around the center of the shaft body 93 (four directions shifted from each other by about 45 ° around the center). A projecting portion 92 a having a slope is disposed at the end of each arm 92. Each L-shaped arm 92 is disposed on the shaft body 93 so that the protrusion 92a extends around the shaft body 93 in the same direction.

  As shown in FIG. 29, the anchor mechanism 85 includes a base body 86 to which the wires 46 to 49 are connected, an anchor member 87 that moves forward and backward on the base body 86, and a bias that biases the anchor member 87. And a spring 88.

  The base body 86 includes a box-shaped portion to which the wires 46 to 49 are connected to the upper surface portion, and includes an anchor holding body 86a in which the box-shaped bottom surface portion extends in a plate shape. In the base body 86, a hole 86b is formed in a plate-like portion where the bottom surface of the anchor holding body 86a extends, and an edge portion 86c for linearly guiding the anchor member 87 extending upward on both sides of the plate-like portion. Is provided. In addition, each anchor mechanism part 85 is arrange | positioned in the housing | casing 41 so that each hole 86b may oppose each holding body 81-84 of the composite cable 4 connected to the housing | casing 41. FIG.

  The anchor member 87 protrudes on one end of the plate body, and has a triangular prism-shaped convex portion 87a with the inclined surface 87b facing the other end side, and a concave notch portion 87c formed from the other end side toward the center side, have. The anchor member 87 has a bias spring 88 connected to the end surface of the convex portion 87a opposite to the inclined surface 87b.

  The anchor member 87 is disposed on the upper surface of the plate-like portion of the anchor holding body 86a so as to be movable back and forth along the edge 86c. The bias spring 88 is connected within the box shape of the anchor holding body 86a so as to bias the anchor member 87 toward the other end on the side of the hole 86b formed in the plate-like member of the anchor holding body 86a. The

  In the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment, when the wires 46 to 49 are pulled or loosened in response to the tilting operation of the operation lever 43 (not shown here), the housing Each anchor mechanism 85 in 41 is configured to move forward and backward in the vertical direction (vertical direction). In addition, each component of the camera system 1 in the present embodiment is the same as that in the first embodiment.

  In the configuration of the camera system 1 according to the present embodiment described above, when the composite cable 4 is inserted and connected to the casing 41 of the operation unit 5 as shown in FIG. It is inserted into the hole 86b of each anchor holding body 86a. At this time, each of the holding bodies 81 to 84 comes into contact with the end portion of the anchor member 87. Then, the anchor member 87 is pushed into the box-shaped portion side that is opposite to the biasing direction of the bias spring 88 against the biasing force of the bias spring 88.

  The composite cable 4 is inserted to the position where the locking recess 35 is locked by the ball plunger 60 provided in the cable arrangement hole 41b of the housing 41, and at the same time, the holding bodies 81 to 84 are connected to the anchors 81 to 84, respectively. The hole 86b of the holding body 86a is penetrated, and the anchor member 87 moves to the hole 86b side by the biasing force of the bias spring 88.

  At this time, the operation wires 26 to 29 connected to the holding bodies 81 to 84 enter the notches 87c of the anchor members 87, and the bottom surfaces of the holding bodies 81 to 84 abut against the anchor members 87. The base body 86 is held so as not to fall out from the hole 86b (see FIG. 31).

  That is, when connecting the composite cable 4 to the casing 41 of the operation unit 5, the holding bodies 81 to 84 are held by the anchor members 87 at a time (with one touch), and as shown in FIG. 81 to 84 are connected to each anchor mechanism portion 85.

  When the operation lever 43 of the operation unit 5 is tilted, each anchor mechanism 85 moves forward and backward in the vertical direction (up and down direction) according to the tilt direction of the operation lever 43. Therefore, each holding body 81 to 84 connected to each anchor mechanism unit 85 also moves forward and backward in the vertical direction (up and down direction) in the housing 41. Thus, the respective operation wires 26 to 29 connected to the respective holding bodies 81 to 84 are pulled and loosened, and the observation (field of view) direction of the imaging unit 15 of the camera 2 is changed.

  Of course, the camera system 1 of the present embodiment configured as described above also has the same effect as that of the first embodiment, and is in the body based on the tilting operation of the operation lever 43 of the operation unit 5 from the outside of the body. A configuration in which the observation (field of view) direction of the camera 2 installed in the abdominal cavity 101 can be easily changed to a user's desired direction, so that the operability is improved and the response performance of observation (field of view) change based on the operation is good. It can be.

  When the composite cable 4 is removed from the operation unit 5, the user operates the release operation member 90 to rotate around the shaft body 93 by the release lever 91 in order to release the holding bodies 81 to 84 from the anchor mechanism portions 85. To do. Then, each arm 92 also rotates around the shaft body 93 and moves toward each anchor mechanism portion 85.

  Then, the protrusion 92 a of each arm 92 abuts on the protrusion 87 a formed on the anchor member 87 of each anchor mechanism 85. At this time, the slope 87b of the convex portion 87a contacts the slope of the projection 92a, and the anchor member 87 is opposed to the biasing force of the bias spring 88 so that the anchor member 87 is in a direction opposite to the biasing direction of the bias spring 88. It pushes in to the part side (refer FIG. 33).

  Then, the holding members 81 to 84 whose bottom surface portions are in contact with the respective anchor members 87 are released from the contact and holding by the movement of the respective anchor members 87. Thus, the respective holding bodies 81 to 84 inserted through the hole portions 86b of the respective base bodies 86 can pass through the hole portions 86b, and the respective holding bodies 81 to 84 can be extracted from the respective anchor mechanism portions 85.

  Therefore, the composite cable 4 can be detached from the operation unit 5. In addition, a rotation urging spring is provided on the shaft body 93 of the release operation member 90, and the protrusion 92a of each arm 92 is urged in a rotation direction away from the anchor mechanism 85 by the rotation urging spring. You may do it.

(Fourth embodiment)
Next, a fourth embodiment according to the abdominal camera system of the present invention will be described below with reference to FIGS. 34 to 42 relate to the fourth embodiment of the present invention, FIG. 34 is a perspective view showing the structure of the locking member disposed at the tip of the composite cable, and FIG. 35 is the tip of the composite cable. FIG. 36 is a cross-sectional view for explaining an anchor mechanism portion that holds the locking body, and FIG. 37 holds the locking body of the first modified example. 38 is a cross-sectional view for explaining the anchor mechanism, FIG. 38 is a cross-sectional view for explaining the anchor mechanism holding the locking body of the second modified example, and FIG. 40 is a perspective view showing the configuration of the control unit, FIG. 40 is a partial sectional view showing the configuration of the lever holding portion of the observation direction control unit, and FIG. 41 is a perspective view showing the configuration of the observation direction control unit according to the fourth modification. FIG. 42 is a cross-sectional view for explaining a stopper configuration for holding the anchor mechanism portion.
Also in the following description, the same reference numerals are used for the same components as those of the camera system 1 of the first embodiment described above, and detailed descriptions of those components are omitted.

  The camera system 1 according to the present embodiment has four holding bodies that are plate-like connecting portions projecting and sunk at the end surface portion of the base 32 of the composite cable 4 extending from the camera 2 shown in FIGS. 34 and 35. 36, as shown in FIG. 36, the wires 46 to 49 are moved forward and backward in the casing 41 of the operation unit 5 by the pulling and loosening operation, and the holding bodies 111 to 114 are latched. An anchor mechanism unit 120 which is a coupling mechanism for coupling is provided.

  More specifically, each of the four holding bodies 111 to 114 of the present embodiment is an elongated plate, and is divided into four equal parts around the center of the base 32 disposed at the end of the composite cable 4. The base plate 32 is arranged so as to be able to project and retract. These four holding bodies 111 to 114 are connected to the operation wires 26 to 29 inserted and arranged in the composite cable 4 in the middle.

  The four holding bodies 111 to 114 have recesses 111 a to 114 a formed by cutting out the middle part of the tip side, which is the upper side, at the side of the base 32 in the outer diameter direction.

  These four holders 111 to 114 are guided to advance and retract in the vertical direction (vertical direction) by a guide hole 115 formed in the base 32. In addition, the four holding bodies 111 to 114 are formed with stepped portions 111b to 114b in the middle portion, and projecting portions 111c to 114c that are outwardly directed to the base end portion as the lower portion.

In each holding body 111 to 114, the step portions 111 b to 114 b come into contact with the wall surface of the guide hole 115 and are linearly guided, and the protrusions 111 c to 114 c abut against the peripheral portion where the guide hole 115 in the base 32 opens at the lower part. The upward movement is restricted. Each holding body 111 to 114 is moved downward by contacting the base end surface on which the protrusions 111c to 114c are formed with the upper end of the insulating member in the electrical contact portion 34 serving as a stopper. Be regulated.
Each of the holding bodies 111 to 114 has slope portions 111d to 114d formed by cutting off the upper end corner of the base 32 in the outer diameter direction.

  In the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment, four anchor mechanism portions 120 that hold and hold the holding bodies 111 to 114 are arranged around the center of the casing 41. Arranged in substantially equal-spaced outer diameter directions (outer diameter directions shifted from each other by about 45 ° around the center), each can be moved forward and backward in a state of being guided in a straight line inside the casing 41 in the vertical direction (vertical direction). (See FIG. 36).

  Each of the four anchor mechanism portions 120 is connected to each wire 46-49 inserted and disposed in the housing 41, and the movement in the vertical direction is guided straight by a guide hole 132 formed in the housing 41.

  Each anchor mechanism portion 120 has an anchor portion 120a in which the holding bodies 111 to 114 are inserted and held on the lower side, and the pin support portion 120b extends from the side portion of the anchor portion 120a to the outside of the housing 41. It extends in the horizontal direction toward the radial side. Each anchor mechanism portion 120 is disposed in the housing 41 so as to face the holding bodies 111 to 114 of the composite cable 4 connected to the housing 41.

  A lock / release pin 121 is inserted into the pin support portion 120b, and a bias spring 123 that urges the lock / release pin 121 toward the anchor portion 120a is disposed therein. The lock / release pin 121 has an outward flange 121a in contact with the bias spring 123 in the pin support portion 120b, and a slope portion 121b that is cut obliquely is formed at one end portion on the anchor portion 120a side. The lock / release pin 121 is provided with a knob 122 at the other end extending from the side of the housing 41.

  The housing 41 communicates with the guide hole 132 and has a slide groove 131 formed in a space so that the anchor mechanism 120 and the lock / release pin 121 can move forward and backward. Further, the anchor mechanism portion 120 has a step portion formed with the anchor portion 120 a facing outward, and the upper surface of the step portion of the anchor portion 120 a is a surface around the guide hole 132 that forms the slide groove 131 in the housing 41. The upper movement is regulated by contacting the head. Further, the anchor mechanism portion 120 is restricted from moving downward by the lower surface of the anchor portion 120a coming into contact with the lower inner surface forming the slide groove 131 in the housing 41.

  In the configuration of the camera system 1 according to the present embodiment described above, when the composite cable 4 is inserted and connected to the casing 41 of the operation unit 5, the holding bodies 111 to 114 are connected to the anchor mechanisms 120. It is inserted into the portion 120a from below to above. At this time, each holding body 111-114 contacts the lock / release pin 121 whose upper end protrudes within the anchor portion 120a.

  Then, the slopes 111 d to 114 d of the holding bodies 111 to 114 come into contact with the slope 121 b of the lock / release pin 121, and the lock / release pin 121 resists the biasing force of the bias spring 123 and It is moved horizontally and pushed into the outer diameter side of the casing 41 which is opposite to the urging direction.

  Further, when the holding bodies 111 to 114 are inserted into the anchor portions 120 a, the end portions of the lock / release pins 121 are brought into contact with the side portions of the holding bodies 111 to 114 by the bias spring 123. It becomes a state. The composite cable 4 is inserted to the position where the locking recess 35 is locked by the ball plunger 60 (not shown here) disposed in the cable arrangement hole 41b of the housing 41, and at the same time, each holding body The end of the lock / release pin 121 is fitted into and engaged with the recesses 111a to 114a of 111-114.

  In this way, each holding body 111 to 114 is connected and held by each anchor mechanism part 120. That is, when the composite cable 4 is connected to the housing 41 of the operation unit 5, the holding bodies 111 to 114 are held in the anchor portions 120a at a time (with one touch), and the holding bodies 111 to 114 are connected to the anchors. It is connected to the mechanism unit 120.

  When the operation lever 43 of the operation unit 5 is tilted, each anchor mechanism 120 moves forward and backward in the vertical direction (up and down direction) according to the tilt direction of the operation lever 43. Therefore, the holding bodies 111 to 114 connected to the anchor mechanism portions 120 also move forward and backward in the vertical direction (up and down direction) in the housing 41. In this way, the operation wires 26 to 29 connected to the holding bodies 111 to 114 are pulled and loosened, and the observation (field of view) direction of the imaging unit 15 of the camera 2 is changed.

  Of course, the camera system 1 of the present embodiment configured as described above also has the same effect as that of the first embodiment, and is in the body based on the tilting operation of the operation lever 43 of the operation unit 5 from the outside of the body. A configuration in which the observation (field of view) direction of the camera 2 installed in the abdominal cavity 101 can be easily changed to a user's desired direction, so that the operability is improved and the response performance of observation (field of view) change based on the operation is good. It can be.

  When the composite cable 4 is removed from the operation unit 5, in order to release the holding bodies 111 to 114 from the anchor mechanism portions 120, the user moves the lock / release pin 121 forward, that is, outward of the housing 41. pull. Then, the lock / release pin 121 moves horizontally to the outer diameter side of the housing 41 against the biasing force of the bias spring 123, and the engagement / holding with the recesses 111 a to 114 a of the holding bodies 111 to 114 is performed. Canceled. Therefore, each holding body 111-114 can be extracted from each anchor part 120a. Thus, the composite cable 4 can be detached from the operation unit 5.

  The anchor mechanism 120 is not limited to the configuration using the lock / release pin 121, and may be configured as shown in FIG. 37 or 38, for example.

(First modification)
Specifically, as shown in FIG. 37, a leaf spring 124 that engages and holds the concave portions 111a to 114a of the holding bodies 111 to 114 may be provided in the anchor portion 120a.

  The leaf spring 124 is fixed in the anchor portion 120a by a screw 125, and has an arc-shaped fitting portion 124a provided at one end portion. The holders 111 to 114 are held in the anchor portions 120a by fitting the fitting portions 124a into the recesses 111a to 114a of the holders 111 to 114, respectively.

  In such a configuration, when the composite cable 4 is inserted and connected to the housing 41 of the operation unit 5, the slope portions 111 d to 114 d of the holding bodies 111 to 114 come into contact with the fitting portions 124 a of the leaf springs 124. The fitting portion 124a comes into contact with the urging force of the leaf spring 124 so as to ride on the side surfaces of the holding bodies 111 to 114, and then fits into and engages with the concave portions 111a to 114a. In this way, each holding body 111 to 114 is connected to each anchor mechanism part 120.

  Further, when the composite cable 4 is removed from the operation unit 5, the user pulls the composite cable 4 with a predetermined force, so that the fitting portion 124a of the leaf spring 124 that engages with each of the recesses 111a to 114a is released and each holding is performed. The connection between the bodies 111 to 114 and each anchor mechanism 120 is released.

(Second modification)
Further, as shown in FIG. 38, a rotatable L-shaped locking body 126 that engages and holds the concave portions 111a to 114a of the holding bodies 111 to 114 may be disposed in the anchor portion 120a. good.

  The locking body 126 is pivotally supported by the rotation shaft 127 and is urged to one side around the rotation shaft 127 by a torsion coil spring 126a. In addition, the locking body 126 is formed with a sloped portion 126b at an end portion close to each holding body 111-114. Here, the release / release pin 121 is biased by the bias spring 123 toward the outer side of the housing 41.

  In such a configuration, when the composite cable 4 is inserted and connected to the housing 41 of the operation unit 5, the slope portions 111 d to 114 d of the holding bodies 111 to 114 come into contact with the slope portion 126 b of the locking body 126. Thus, the locking body 126 is rotated in one direction around the rotation shaft 127 against the urging force of the torsion coil spring 126a. Therefore, the locking body 126 comes into contact with the side surfaces of the holding bodies 111 to 114 so that one end thereof rides on, and thereafter, the one end is fitted into and engaged with the recesses 111a to 114a. In this way, each holding body 111 to 114 is connected to each anchor mechanism part 120.

  Further, when removing the composite cable 4 from the operation unit 5, the user pushes the lock / release pin 121 toward the housing 41, so that the end of the lock / release pin 121 abuts on the locking body 126, The stop body 126 is rotated in the other direction around the rotation shaft 127. Then, the engagement between the locking body 126 and the recesses 111a to 114a is released, and the connection between the holding bodies 111 to 114 and the anchor mechanism portions 120 is released.

  The operation unit 5 serving as the observation direction operation device (observation direction operation means) of each embodiment described above is not limited to the configuration of the operation lever 43 that changes the visual field direction of the camera 2 by tilting operation. 39 to 41 may be adopted.

(Third Modification)
Specifically, the operation unit 5 shown in FIG. 39 includes four slide levers 143a to 143d in four directions with substantially equal intervals around the center (four directions shifted from each other by about 45 ° around the center). A cross-shaped plate 142 that is slidably disposed is continuously provided on the upper portion of the housing 41.

  Each slide lever 143a-143d has the axis | shaft 145 provided with the outward flange 145a. A portion extending in four directions of the plate body 142 accommodates the shaft 145 of each slide lever 143a to 143d and the outward flange 145a, and holds each slide lever 143a to 143d with a predetermined frictional resistance. A box-shaped lever holding portion 144 is provided. In the lever holding portion 144, a long groove 146 that linearly guides the shaft 145 of each of the slide levers 143a to 143d is formed in the longitudinal direction at the center of the upper surface. The wires 46 to 49 inserted through the wire insertion passage 51 are connected to the shafts 145 of the slide levers 143a to 143d.

  In such an operation unit 5, when the slide levers 143a to 143d are slid, the wires 46 to 49 are pulled and loosened, and the observation (field of view) direction of the imaging unit 15 of the camera 2 is set to the user's desired direction. It can be changed easily.

  The slide levers 143a to 143d are disposed at the lever holding portion 144 with a predetermined frictional resistance, so that the slide levers 143a to 143d are slid and moved so as to hold the pulling / relaxation amounts of the wires 46 to 49. It stops and the position of the imaging unit 15 of the camera 2 in the observation (field of view) direction is maintained. That is, the visual field fixing means here for fixing the visual field of the camera 2 is configured. Further, the lever holding portion 144 may be provided with a brake mechanism that holds and brakes the amount of pulling / relaxation of the wires 46 to 49 by the slide levers 143a to 143d.

  In addition, the plate body 142 may be provided with indicator portions indicating directions in which the camera 2 is tilted at the four extending portions. Therefore, the user can change the observation (field-of-view) direction of the imaging unit 15 of the camera 2 in a desired direction by operating the slide levers 143a to 143d according to the index portion.

(Fourth modification)
Further, the operation unit 5 shown in FIG. 41 has four slide levers 146a to 146d that move slidably up and down along the longitudinal axis (axis along the vertical direction) of the substantially cylindrical casing 41. Are arranged in four directions at substantially equal intervals around the center (four directions shifted from each other by about 45 ° around the center).

  As shown in FIG. 42, each of the slide levers 146a to 146d is integrally connected to the upper portion of the anchor mechanism 120, and is connected to a shaft 128 that is bent and provided in an L shape in the outer diameter direction of the housing 41. ing. The shaft 128 is linearly guided to slide in the vertical direction by a guide groove 147 formed in the housing 41. That is, the operation unit 5 here has a configuration in which the wires 46 to 49 connected to the anchor mechanism unit 120 are not provided in the housing 41.

  In such an operation unit 5, each of the slide levers 146a to 146d is slid in the vertical direction, and accordingly, the anchor mechanism unit 120 is moved up and down to observe the imaging unit 15 of the camera 2 (view field of view). ) The direction can be easily changed to the direction desired by the user.

  Further, the anchor mechanism portion 120 has a protrusion 128a formed on the upper end side portion. The protrusions 128 a are hooked on the plurality of protrusions 129 a of the stopper 129 disposed on the inner wall of the guide groove 147 on the housing 41. Therefore, the anchor mechanism unit 120 stops at a position moved in the vertical direction by the slide levers 146a to 146d. Thereby, the tilt of the camera 2 is held at an arbitrary location. That is, the visual field fixing means here for fixing the visual field of the camera 2 is configured.

(Fifth embodiment)
Next, a fifth embodiment according to the abdominal camera system of the present invention will be described below with reference to FIGS. FIGS. 43 to 45 relate to the fifth embodiment of the present invention, FIG. 43 is a perspective view showing the structure of the locking body disposed on the composite cable, and FIG. 44 holds the locking body. FIG. 45 is a cross-sectional view showing a state in which the anchor mechanism unit moves while holding the locking body.
Also in the following description, the same reference numerals are used for the same components as those of the camera system 1 of the first embodiment described above, and detailed descriptions of those components are omitted.

  The camera system 1 according to the present embodiment includes four holding bodies 151 to 154 on the base 32 of the composite cable 4 extending from the camera 2 shown in FIG. 43, and as shown in FIG. An anchor mechanism 150 is provided that moves forward and backward in the horizontal direction (lateral direction) by pulling and loosening the wires 46 to 49 in the housing 41 and grips the holding members 151 to 154 with magnetic force.

  More specifically, the four holding bodies 151 to 154 of the present embodiment are arranged in four directions around the center of the base 32 disposed at the end of the composite cable 4 (four directions shifted from each other by about 45 ° around the center). ). Each of these four holding bodies 151 to 154 is connected to each operation wire 26 to 29 inserted and arranged in the composite cable 4.

  The holding bodies 151 to 154 are detachably engaged with the holes 151 a to 154 a formed in the base 32. That is, in the state where the four holding bodies 151 to 154 are engaged with the hole portions 151a to 154a, the hole portions 151a to 154a are closed and the base 32 has a substantially cylindrical shape. Note that an electrical contact portion 34 b connected to an electrical connector 159 (see FIG. 44) disposed in the casing 41 of the operation unit 5 is disposed at the center of the upper end surface of the base 32.

  As shown in FIG. 44, the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment adsorbs and holds the holding bodies 151 to 154 that are magnetic bodies such as metal pieces by magnetic force. The four anchoring mechanism portions 150 extend in four directions at substantially equal intervals around the center of the casing 41 (four directions shifted from each other by about 45 ° around the center), and each of them is in the horizontal direction (lateral direction). The housing 41 is disposed so as to be able to advance and retreat in a state of being guided straightly inside the housing 41.

  Each anchor mechanism portion 150 includes a shaft member 155 to which the wires 46 to 49 are connected, a magnet 156 that is disposed at one end of the shaft member 155 and holds each of the holding members 151 to 154 by magnetic force, and a shaft member. And a bias spring 157 that is extrapolated to 155 and biases the magnet 156 toward the center of the housing 41. The shaft member 155 is guided to move in the horizontal direction (lateral direction) by a guide hole 158 formed in the housing 41. The magnet 156 may be a permanent magnet or an electromagnet.

  In the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment, when the wires 46 to 49 are pulled or loosened in response to the tilting operation of the operation lever 43 (not shown here), the housing Each anchor mechanism 150 in 41 is configured to move forward and backward in the horizontal direction (lateral direction). In addition, each component of the camera system 1 in the present embodiment is the same as that in the first embodiment.

  In the configuration of the camera system 1 of the present embodiment described above, the composite is made up to the position where the locking recess 35 of the base 32 is locked by the ball plunger 60 disposed in the cable arrangement hole 41b of the housing 41. When the cable 4 is inserted into the casing 41 of the operation unit 5, the holding bodies 151 to 154 are attracted to the magnets 156 of the anchor mechanism portions 150.

  In the operation unit 5, the wires 46 to 49 are pulled and loosened in response to the tilting operation of the operation lever 43 (not shown here), and the holding bodies 151 to 154 to which the magnets 156 of the anchor mechanism portions 150 are attracted. At the same time, it moves forward and backward from the center of the housing 41 against the biasing force of the bias spring 157 (see FIG. 45).

  Therefore, the holding bodies 151 to 154 attracted and held by the anchor mechanism portions 150 also move forward and backward in the horizontal direction (lateral direction) within the housing 41. In this way, the operation wires 26 to 29 connected to the holding bodies 151 to 154 are pulled and loosened, and the observation (field of view) direction of the imaging unit 15 of the camera 2 is changed.

  Of course, the camera system 1 of the present embodiment configured as described above also has the same effect as that of the first embodiment, and is in the body based on the tilting operation of the operation lever 43 of the operation unit 5 from the outside of the body. A configuration in which the observation (field of view) direction of the camera 2 installed in the abdominal cavity 101 can be easily changed to a user's desired direction, so that the operability is improved and the response performance of observation (field of view) change based on the operation is good. It can be.

(Sixth embodiment)
Next, a sixth embodiment according to the abdominal camera system of the present invention will be described below with reference to FIGS. 46 to 50 relate to the sixth embodiment of the present invention, FIG. 46 is a perspective view showing the configuration of the observation direction changing operation unit to which the composite cable is connected, and FIG. 47 is arranged in the composite cable. 48 is a cross-sectional view showing the configuration of the observation direction changing operation unit. FIG. 49 is a cross-sectional view showing the configuration of the observation direction changing operation unit along line 4XIX-4XIX in FIG. 50 and 50 are perspective views showing an example configuration of the operation lever and the magnet of the holding body.
Also in the following description, the same reference numerals are used for the same components as those of the camera system 1 of the first embodiment described above, and detailed descriptions of those components are omitted.

  As shown in FIG. 46, the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment has the cable arrangement hole 41b opened at the lower surface of the casing 41 eccentric from the center of the casing 41. It is provided at the position. Further, the operation unit 5 is surrounded by four operation levers 171 to 174 that project and sink on the upper surface of the housing 41 and serve as an anchor mechanism portion as a connection mechanism here, and these four operation levers 171 to 174. In addition, a rotation lever 175 disposed at the center of the upper surface of the housing 41 is provided.

  In the composite cable 4 of the present embodiment, four holding bodies 161 to 164 formed of a magnetic body such as a columnar metal are arranged in a column in order from the tip in the base 32. The operation wires 26 to 29 are connected to the four holding bodies 161 to 164. In addition, nonmagnetic portions 161 a to 164 a are provided below the four holding bodies 161 to 164.

  As shown in FIGS. 48 and 49, the operation unit 5 described above has a rotating body 176 that is a circular cylindrical rotating portion having a rotating lever 175 connected to the upper center. In a state of being accommodated in the casing 41, it is rotatably disposed via a bearing 177.

  The rotating body 176 is provided with four holes 176a for slidingly holding the operation levers 171 to 174 in the vertical direction at substantially equal intervals around the center, that is, at positions shifted from each other by about 45 °. Yes. In addition, the rotating body 176 has recesses 176b formed at the outer periphery of the substantially equal interval around the center, that is, at the outer periphery where the centers are shifted from each other by about 45 ° (see FIG. 49).

  By engaging these concave portions 176b with a ball plunger 178 provided in the housing 41, the rotational position of the rotational body 176 is defined. A stopper 176c protruding outward is disposed on the outer peripheral portion of the rotating body 176. The stopper 176c comes into contact with the ball plunger 178 without getting over it, and restricts the rotation of the rotating body 176. That is, the rotating body 176 is configured to rotate only approximately 360 ° because the rotating body 176 cannot rotate any more when the stopper 176c contacts the ball plunger 178.

The operation levers 171 to 174 disposed in the holes 176a of the rotating body 176 have outward flanges 171a to 174a at the ends located in the holes 176a. ) Are provided with magnets 171b to 174b. The outward flanges 171a to 174a prevent the operation levers 171 to 174 from falling out from the holes 176a of the rotating body 176.
In addition, each component of the camera system 1 in the present embodiment is the same as that in the first embodiment.

  In the configuration of the camera system 1 of the present embodiment described above, the composite is made up to the position where the locking recess 35 of the base 32 is locked by the ball plunger 60 disposed in the cable arrangement hole 41b of the housing 41. The cable 4 is inserted into the casing 41 of the operation unit 5. At this time, the holding body 161 positioned at the top of the base 32 of the composite cable 4 is opposed to the magnet 171b of the operation lever 171 and is attracted to the magnet 171b. At this time, the rotating body 176 of the operation unit 5 has an initial position in a state in which the recess 176b closest to the stopper 176c is engaged with the ball plunger 178 provided in the housing 41 and the rotation position is defined. To do.

  Then, the rotating lever 175 is operated by the user, and then the rotating body 176 is rotated to a position where the concave portion 176b is engaged with the ball plunger 178. Then, the second holding body 163 from above in the base 32 faces the magnet 173b of the operation lever 173 and is attracted to the magnet 173b.

  Further, the rotation lever 175 is operated to the position where the concave portion 176 b is next engaged with the ball plunger 178, the rotation body 176 is rotated, and the third holding body 162 from the upper side of the base 32 is moved to the position of the operation lever 172. Opposing to the magnet 172b, the magnet 173b is attracted. Finally, when the rotating body 176 is rotated to a position where the recess 176b engages with the ball plunger 178, the holding body 164 positioned at the bottom of the base 32 faces the magnet 174b of the operation lever 174, and this magnet 174b is adsorbed.

  That is, each of the four holding bodies 161 to 164 is attracted to the magnets 171b to 174b of the operation levers 171 to 174 and lifted into the hole 176a.

  From this state, when the operation levers 171 to 174 are slid up and down, the holding bodies 161 to 164 also move up and down. Therefore, the operation wires 26 to 29 connected to the holding bodies 161 to 164 are pulled and loosened, and the observation (field of view) direction of the imaging unit 15 of the camera 2 is changed.

  Of course, the camera system 1 of the present embodiment configured as described above also has the same effect as that of the first embodiment, and is in the body based on the tilting operation of the operation lever 43 of the operation unit 5 from the outside of the body. A configuration in which the observation (field of view) direction of the camera 2 installed in the abdominal cavity 101 can be easily changed to a user's desired direction, so that the operability is improved and the response performance of observation (field of view) change based on the operation is good. It can be.

  As shown in FIG. 50, the magnets 171b to 174b of the operation levers 171 to 174 are assumed to have polarities (SN poles) that are not front and back, but are divided into left and right on the surface. , And the polarity (SN pole) may be divided into left and right on the surface instead of the front and back. In such a configuration, when the magnets 171b to 174b of the operation levers 171 to 174 and the holding bodies 161 to 164 face each other with different polarities, the magnets are attracted to each other, and the operation levers 171 to 174 are rotated. When the magnets 171b to 174b and the holding bodies 161 to 164 have the same polarity, the connection / release can be switched so that they repel each other.

(Seventh embodiment)
Next, a seventh embodiment according to the abdominal camera system of the present invention will be described below with reference to FIGS. FIGS. 51 to 56 relate to the seventh embodiment of the present invention, FIG. 51 is a perspective view showing the structure of the locking body disposed at the tip of the composite cable, and FIG. 52 shows the locking body. 53 is a perspective view showing the structure of the anchor mechanism part to be held, FIG. 53 is a sectional view showing the structure of the anchor mechanism part, FIG. 54 is a perspective view showing the structure of the cylindrical gear in which the anchor mechanism part is arranged, and FIG. FIG. 56 is a perspective view showing the configuration of the observation direction changing operation unit.
Also in the following description, the same reference numerals are used for the same components as those of the camera system 1 of the first embodiment described above, and detailed descriptions of those components are omitted.

  The camera system 1 according to the present embodiment includes four holding bodies 181 to 184 disposed on the end surface portion of the base 32 of the composite cable 4 extending from the camera 2 shown in FIGS. 51 and 52. As shown in FIGS. 52 to 55, the connection is made to move up and down in the vertical direction by pulling and loosening the wires 46 to 49 in the casing 41 of the operation unit 5 and to hook and hold the holding bodies 181 to 184. An anchor mechanism 190, which is a mechanism, is provided.

  More specifically, each of the four holding bodies 181 to 184 of the present embodiment has a cylindrical shape having protrusions 181 a to 184 a from the upper surface, and the base 32 disposed at the end of the composite cable 4. Is arranged in contact with the end face of the base 32 at a position divided into four equal parts around the center of the base. These four holding bodies 181 to 184 are connected to the operation wires 26 to 29 inserted and arranged in the composite cable 4.

  As shown in FIGS. 52 to 54, the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment includes four anchors that hold the protrusions 181a to 184a of the holding bodies 181 to 184. The mechanism units 190 are arranged in four directions at substantially equal intervals around the center of the casing 41 (four directions shifted from each other by about 45 ° around the center). These four anchor mechanism portions 190 are arranged so as to be able to advance and retreat in a state in which each of the four anchor mechanism portions 190 is linearly guided inside the casing 41 in the vertical direction (vertical direction).

  Each anchor mechanism 190 includes a pipe (pipe) -shaped shaft body 191 having a thread groove 191a formed on the outer peripheral portion thereof, and a gear portion 193 that is externally projected at a tip portion of the shaft body 191 and protrudes outward in the middle portion. And a cylindrical block-shaped chuck portion 192 provided.

  The shaft body 191 has a collet portion 194 having a small diameter at the lower end portion, and a taper 194b is formed outwardly from the collet portion 194. The shaft body 191 has a plurality of, for example, four slits 194a formed upward from the collet portion 194. The shaft body 191 has an upper end connected to the operation wires 26 to 29.

  The chuck portion 192 has an inner surface gear 192a that is threadedly engaged with the thread groove 191a of the shaft body 191 on the inner surface, and the inner surface is in contact with the outer surface of the taper 194b of the shaft body 191 having a lower end formed on the upper portion of the collet portion 194. A taper 192b is provided. That is, each anchor mechanism portion 190 is a so-called drill chuck mechanism having a simple structure in which the chuck portion 192 rotates and moves up and down with respect to the shaft body 191, and the width of the slit 194a of the collet portion 194 is closed by tightening. It has become.

  As shown in FIGS. 54 and 55, each anchor mechanism 190 includes a chuck portion 192 by a cylindrical gear 201 in which gear grooves 201 a and 201 b are formed on the outer and inner peripheral surfaces in the housing 41. Is rotated with respect to the shaft body 191.

  Each anchor mechanism 190 is engaged with a gear groove 201b carved in the inner periphery of the cylindrical gear 201. Further, the four anchor mechanism portions 190 are arranged in the housing 41 at four positions at substantially equal intervals around the center of the cylindrical gear 201 (four positions shifted from each other by about 45 ° around the center). Each anchor mechanism 190 is disposed in the housing 41 so as to face the holding bodies 181 to 184 of the composite cable 4 connected to the housing 41.

  The four anchor mechanism portions 190 are in a state where the shaft body 191 is inserted and disposed in each of the four guide holes 211 formed in the casing 41 and is linearly guided in the vertical direction. The shaft body 191 includes, for example, a key groove that engages with a protrusion formed in the guide hole 211 so that the shaft body 191 does not rotate together with the chuck portion 192, or the guide hole 211 and the shaft body 191 have a cross-sectional shape of D. It has a cut shape.

  Note that the center position of the cylindrical gear 201 of the present embodiment is arranged on the center axis of the housing 41. As shown in FIGS. 55 and 56, the housing 41 has a knurl 202 that partially protrudes from the side surface portion, and a plurality of rotating the cylindrical gear 201 by rotating this knurl 202. Here, a gear train constituted by three gears 203 to 205 is provided. That is, when the knurl 202 is rotated, the rotation is transmitted to the cylindrical gear 201 via the gear train of the gears 203 to 205.

  In the four anchor mechanism portions 190, the rotation of the cylindrical gear 201 is transmitted to the chuck portion 192. Thus, in the four anchor mechanism parts 190, the chuck part 192 moves up and down with respect to the shaft body 191, and the collet part 194 opens and closes.

  In the operation unit 5 serving as the observation direction operation device (observation direction operation means) of the present embodiment, when the wires 46 to 49 are pulled or loosened in response to the tilting operation of the operation lever 43 (not shown here), the housing Each anchor mechanism 190 in 41 is configured to move forward and backward in the vertical direction (vertical direction). In addition, each component of the camera system 1 in the present embodiment is the same as that in the first embodiment.

  In the configuration of the camera system 1 according to the present embodiment described above, when the composite cable 4 is inserted and connected to the casing 41 of the operation unit 5, the protrusions 181a to 184a of the holding bodies 181 to 184 are respectively connected. It is inserted into the collet part 194 of the anchor mechanism part 190. When the knurl 202 is rotated by the user, the collet portions 194 of the four anchor mechanism portions 190 are closed, and the inserted protrusions 181a to 184a are gripped.

  Thus, after the composite cable 4 is connected to the casing 41 of the operation unit 5, the holding bodies 181 to 184 are coupled to the anchor mechanism portions 190.

  When the operation lever 43 of the operation unit 5 is tilted, each anchor mechanism 190 moves forward and backward in the vertical direction (up and down direction) according to the tilt direction of the operation lever 43. Therefore, each holding body 181 to 184 connected to each anchor mechanism 190 also moves forward and backward in the vertical direction (up and down direction) within the housing 41. Thus, the respective operation wires 26 to 29 connected to the respective holding bodies 181 to 184 are pulled and loosened, and the observation (field of view) direction of the imaging unit 15 of the camera 2 is changed.

  Of course, the camera system 1 of the present embodiment configured as described above also has the same effect as that of the first embodiment, and is in the body based on the tilting operation of the operation lever 43 of the operation unit 5 from the outside of the body. A configuration in which the observation (field of view) direction of the camera 2 installed in the abdominal cavity 101 can be easily changed to a user's desired direction, so that the operability is improved and the response performance of observation (field of view) change based on the operation is good. It can be.

(Eighth embodiment)
Next, an eighth embodiment according to the abdominal camera system of the present invention will be described below with reference to FIGS. 57 to 61 relate to the eighth embodiment of the present invention, FIG. 57 is a perspective view showing the end configuration of the composite cable, FIG. 58 is a perspective view showing the configuration of the fixed unit, and FIG. 60 is a plan view showing the configuration of the wire branching section, FIG. 60 is a sectional view showing the configuration of the fixing unit to which the composite cable is connected, and FIG. 61 is a sectional view of the wire branching section showing an example of the holding means for holding the operation wire. .
Also in the following description, the same reference numerals are used for the same components as those of the camera system 1 of the first embodiment described above, and detailed descriptions of those components are omitted.

  In the composite cable 4 of the present embodiment, as shown in FIG. 57, the four operation wires 26 to 29 and the communication cable 10 are each extended from the end of the base 32. In addition, convex portions 26c to 29c that also serve as stoppers from the composite cable 4 are provided at the extended ends of the operation wires 26 to 29, respectively.

  These convex portions 26c to 29c can change the angle of the camera 2 according to, for example, the top, bottom, left, and right of the image captured by the imaging unit 15 of the camera 2 when the operation wires 26 to 29 to which the convex portions 26c to 29c are individually attached are pulled. As described above, it is preferable to provide an indicator portion that can easily recognize the operation direction. In addition, the communication cable 10 here is provided with an electrical connector (not shown) that is electrically connected to the CCU 7 (see FIG. 1) of the extracorporeal device at the extended end.

  In the camera system 1 of the present embodiment, instead of the operation unit 5, the camera 2 introduced into the abdominal cavity 101 shown in FIGS. 58 to 60 is placed and fixed to the abdominal wall 102, which is a body wall. A fixing unit 200 serving as an indwelling fixing device (indwelling fixing means) is provided.

  The fixed unit 200 includes a housing 207 in which a wire branching portion 210 placed on the patient's abdomen is provided at the lower portion, and the composite cable of the camera 2 is penetrated vertically from the center of the housing 207. A hole 207a through which 4 is inserted is formed.

  The fixing unit 200 is provided with a fixing lever 208 that fixes the composite cable 4 of the camera 2 on the outside of the body. A hole 208a through which the composite cable 4 is inserted is formed in the middle of the fixing lever 208. The hole 208a is positioned on one side of the housing 207 by a spring 209 provided in the housing 207 so that the position of the hole 208a is displaced from the position of the hole 207a formed in the housing 207 of the fixed unit 200. It is biased in the direction.

  That is, the user pushes the fixing lever 208 into the housing 207 against the biasing force of the spring 209 until the hole 207a of the housing 207 and the hole 208a of the fixing lever 208 substantially coincide with each other. The composite cable 4 can be easily moved relative to the housing 207 of the fixed unit 200 (sliding).

  Note that the camera 2 and the observation direction control unit 3 (see FIG. 1 and the like) are pulled to the outside of the body where the composite cable 4 and the communication cable 10 inserted through the composite cable 4 are both separated from the patient. The base 32 is connected to the fixed unit 200. The communication cable 10 is led out from the upper opening of the hole 207a of the fixed unit 200. In this manner, the camera 2 is held in the fixed unit 200 in a state where the camera 2 is lifted by the communication cable 10 inserted through the composite cable 4. Thus, the camera 2 is placed and fixed in the abdominal cavity 101 in the abdominal wall 102 in the abdominal cavity 101 through the observation direction control unit 3 in a stable state.

  The wire branch portion 210 is a cylindrical block body formed of an elastic body such as rubber, and is fixed to the lower surface of the housing 207. The wire branch portion 210 communicates with the hole portion 207a of the housing 207, and a connection hole portion 210a to which the base 32 of the composite cable 4 is connected is formed at the center. The wire branching portion 210 has four operation wire insertion passages 211 that open at the side peripheral portion and communicate with the connection hole portion 210a. The four operation wire insertion passages 211 are arranged in four directions at approximately equal intervals around the center of the connection hole portion 210a. It is extended in 4 directions that are offset by °.

  Further, the wire branching portion 210 is formed with four slits 212 communicating from the connection hole portion 210a along the operation wire insertion passage 211 toward the operation wire insertion passage 211 from the lower surface. Each slit 212 passes from the lower surface of the wire branching portion 210 to insert the operation wires 26 to 29 into the operation wire insertion passages 211 when the cap 32 of the composite cable 4 is connected to the fixed unit 200. Thus, the operation wire is inserted into each operation wire passage 211.

  In addition, the operation wires 26 to 29 inserted through the operation wire insertion passages 211 are provided with locking portions such as clips at the root portions extending from the side peripheral surfaces of the wire branching portions 210 to prevent the operation wires 26 to 29 from coming off. 218 is disposed. In addition, even if the notch part 213 which pinches | interposes and locks each operation wire 26-29 to the upper part side of each operation wire insertion path 211 as shown in FIG. good. As a result, it is not necessary to attach the locking portion 218 for retaining to the operation wires 26 to 29.

  From the above, the camera system 1 of the present embodiment also determines the observation (field of view) direction of the camera 2 installed in the abdominal cavity 101 in the body based on the operation of the two operation wires 26 and 27 from the outside of the body. It can be easily changed in a desired direction and has a good response performance with variable observation (field of view) based on the operation.

  In addition, the invention described in each embodiment is not limited to the embodiment and modifications, and various modifications can be made without departing from the scope of the invention in the implementation stage. Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

  For example, even if some constituent requirements are deleted from all the constituent requirements shown in each embodiment, the stated requirements can be deleted if the stated problem can be solved and the stated effect can be obtained. The structure thus constructed can be extracted as an invention.

DESCRIPTION OF SYMBOLS 1 ... Abdominal camera system 2 ... Intra-abdominal installation camera 3 ... Observation direction control unit 4 ... Composite cable 5 ... Observation direction change operation unit 6 ... Communication cable 7 ... Camera control unit 8 ... Cable 9 ... Monitor 10 ... Communication cable 11 ... Main body Part 11a ... Cover glass 12 ... Control part 15 ... Imaging unit 16 ... Illumination part 17 ... Solid-state imaging device 18 ... Objective lens group 21 ... Camera fixing part 21a ... Arc surface 21b ... Spherical concave part 21c ... Hole 22 ... Abdominal wall fixing part 22a ... spherical concave portion 22b ... hole portion 23 ... rotating portion 23a ... wire insertion hole portions 24, 25 ... pulley 26-29 ... operating wire 26a-29a ... holding body 26b-29b ... concave portion 26c-29c ... convex portion 30 ... cover cap 31 ... Hook wire 32 ... Base 32a ... Hole 33 ... Key groove 34 ... Electric contact point 35 ... Locking recess 41 ... Case 41a ... Recess 41 b ... cable arrangement hole 41d ... long groove 42 ... leg 42a ... arm 42b ... convex 42c ... hole 42d ... hole 43 ... operation lever 44 ... soft cover boot 45 ... sphere 47 ... bias spring 46-49 ... wire 50 ... Recess 51 ... Wire insertion passage 52 ... Pulley 53 ... Guide hole 54 ... Rack 55 ... Release button 55a ... Coil spring 56 ... Space part 56a ... Holding body guide surface 56b ... Guide hole 57 ... Anchor 57a ... Block body 57b ... Guide arm 57c ... Slit 58 ... Bias spring 59 ... Electric connector 59a ... Electric connector 60 ... Ball plunger 61 ... Cable locking member 62 ... Bias spring 63 ... Locking body 63a ... Notch 64 ... Release lever 65 ... Holding part 101 ... Abdominal cavity 102 ... Abdominal wall L ... Clearance O ... Optical axis

Claims (6)

An imaging means for indwelling and fixing the introduced body wall and imaging the body;
An observation direction control means that has a plurality of operation wires and changes the observation direction of the imaging means by pulling and loosening the plurality of operation wires;
In a state where the plurality of operation wires are inserted and the imaging means is detained and fixed to the body wall, a cable that is pulled out to the outside of the body,
A holder disposed at each end of the plurality of operation wires;
An observation direction operation means for operating the observation direction control means from the outside of the body, comprising a coupling mechanism for connecting the cable to the outside of the body, holding the holding body and coupling to the plurality of operation wires;
A medical device comprising:   The medical apparatus according to claim 1, wherein the observation direction operation unit includes a visual field fixing unit that holds a pulling / relaxation position of the plurality of operation wires and fixes an observation direction of the imaging unit.   The medical apparatus according to claim 1, wherein the observation direction operation unit includes a release unit that releases the holding of the holding body by the coupling mechanism.   The medical device according to claim 3, wherein the coupling mechanism holds the plurality of holding bodies simultaneously with the connection of the cable to the observation direction operation unit.   The medical device according to any one of claims 1 to 4, wherein the coupling mechanism includes an anchor that locks the holding body.   The medical device according to any one of claims 1 to 4, wherein the coupling mechanism includes a magnet that attracts and holds the holding body formed of a magnetic body by a magnetic force.

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