JP2006130238A - Imaging device for endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging device for an endoscope having a fracture prevention part constituted to secure a favorable assemblage, to provide a sure waterproofing performance and facilitate disassembling and assembling for a repair and the like. <P>SOLUTION: This imaging device 3 for an endoscope is provided with an imaging unit 10, a signal cable 19 extending from the imaging unit, and a cable protection member 27 provided near an extension portion of the signal cable and protecting the signal cable. The inside of the cable protection member is molded to be directly and closely attached on the surface of an outer sheath 21 of the signal cable, its outside is connected to the external member 30 of the imaging device for the endoscope via a flange projection part 17a for watertight sealing and is molded to project the tip side of the signal cable by a predetermined length, the outer surface of the tip projecting portion of the signal cable is provided with a cable shield layer 22 and a metal member 23, and the cable shield layer and the metal member are so constituted as to conduct to a metal member 17 on the imaging device side for the endoscope. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an endoscope imaging apparatus, and more particularly to an endoscope imaging apparatus including an imaging unit that is connected to an endoscope eyepiece and obtains an electronic endoscope image.

  Conventionally, by inserting an elongated insertion portion into a body cavity, a medical device capable of observing organs in the body cavity or performing various treatments using a treatment instrument inserted into a treatment instrument channel as necessary Endoscope devices for use are widely used.

  As an observing means for the endoscopic image in such an endoscope apparatus, for example, a means for directly observing with the naked eye from an endoscope eyepiece provided on the operation unit on the hand side, or an endoscope in the endoscope eyepiece. There is means for attaching an endoscope imaging device, transmitting an electronic image signal obtained by the endoscope imaging device to a display device, and displaying an endoscope image using the display unit.

  This endoscope imaging apparatus processes a camera head unit having an imaging element that receives an endoscopic image from an endoscope eyepiece and converts it into an electrical signal, and an electrical signal obtained by the camera head unit. And a camera control unit that outputs the video signal formed in this way to a display device. In this case, the signal cable extending from the rear end of the camera head unit is connected to the camera control unit via the connector, so that the camera head unit and the camera control unit are electrically connected.

  When the endoscope imaging apparatus is attached to the endoscope apparatus for observation or the like, stress may be applied to a portion where the signal cable extends from the camera head portion. The stress may be bent suddenly by this stress. In this case, the internal signal cable may be disconnected due to a sudden bending stress applied to the extension part of the signal cable.

  Therefore, in a conventional endoscope imaging apparatus, a bend preventing member made of an elastic member or the like is provided at a portion where the signal cable extends from the camera head portion. Accordingly, there are some which protect the internal signal cable from disconnection or the like. And, the inner and outer diameters of the interface between the anti-bending member and the outer sheath of the signal cable inserted into the inner part of the anti-bending member are in close contact with each other, or both are bonded to each other. Usually, it is fixed so that there is no gap between them.

  For example, in an endoscope imaging device disclosed in Japanese Patent Laid-Open No. 10-286228, the bending resistance of the signal cable is improved by configuring the bend preventing portion so that the signal cable has directivity. Is.

Some connecting portions between the insertion portion and the operation portion of the endoscope are provided with a folding member made of a similar elastic member or the like in order to prevent the insertion portion from being bent. For example, in Japanese Patent Laid-Open No. 2000-116593, Japanese Patent Laid-Open No. 2001-321327, and Japanese Patent Laid-Open No. 5-228097, an insertion portion of an endoscope and an anti-bending portion are formed integrally, There has been disclosed a configuration in which a seal portion with an exterior is formed on the outer peripheral side.
Japanese Patent Laid-Open No. 10-286228 JP 2000-116593 A JP 2001-321327 A JP-A-5-228097

  However, according to the means disclosed in Japanese Patent Laid-Open No. 10-286228, for example, when the inner surface side of the anti-bending member and the cable sheath are displaced due to bending or the like, the bending prevention effect is reduced. . Further, when the interface between the anti-bending member and the outer sheath of the signal cable is bonded using a stronger adhesive, there arises a problem that it cannot be disassembled when repairing, for example.

  On the other hand, the means described in Japanese Patent Laid-Open No. 2000-116593, Japanese Patent Laid-Open No. 2001-321327, and Japanese Patent Laid-Open No. 5-228097 are mainly applied to the configuration of the insertion portion and the folding prevention portion of the endoscope. It is. Therefore, when this is applied to an endoscope imaging apparatus, it is necessary to consider the connection means of the shield layer of the signal cable. For this reason, in order to apply the means described in the above publications to the endoscope imaging apparatus, further contrivance is required.

  The present invention has been made in view of the above-described points, and the object of the present invention is to ensure good assembling and ensure the function while protecting the signal cable of the endoscope imaging device. It is an object of the present invention to provide an imaging apparatus for an endoscope provided with a bend preventing portion having a structure that can obtain a good waterproof property and that can be easily disassembled and assembled for repair or the like.

  In order to achieve the above object, an endoscope imaging apparatus according to the present invention includes an imaging unit and a signal cable extending from the imaging unit, and is provided in the vicinity of an extension portion of the signal cable. In the endoscope imaging device having a cable protection member for protection, the cable protection member is molded so as to be in direct contact with the outer surface of the signal cable on the inner surface, and the endoscope imaging on the outer surface. Connected to the exterior member of the apparatus through a water-tight seal portion, and is formed by projecting the distal end side of the signal cable by a predetermined length, on the outer surface of the distal end projecting portion of the signal cable Includes a cable shield layer and a metal member, and the cable shield layer and the metal member are located between the metal member on the endoscope imaging apparatus side. Characterized in that it is configured to conduct.

  ADVANTAGE OF THE INVENTION According to this invention, while maintaining the function which protects the signal cable of the imaging device for endoscopes, favorable assemblability can be ensured and reliable waterproofness can be obtained, and disassembly and assembly for repair etc. Therefore, it is possible to provide an endoscope imaging apparatus including a bend preventing portion configured to facilitate the above.

The present invention will be described below with reference to the illustrated embodiments.
FIG. 1 is a system configuration diagram illustrating an outline of an endoscope system to which an endoscope imaging apparatus according to a first embodiment of the present invention is applied. FIG. 2 is an enlarged cross-sectional view of a main part showing a part of the endoscope imaging device (in the vicinity of the folding prevention part) in the endoscope system of FIG. 1 in an enlarged manner.

  An endoscope system 1 to which the endoscope imaging apparatus of the present embodiment is applied is applied to an endoscope system as shown in FIG. The endoscope system 1 is detachably attached to an endoscope 2 having an endoscope eyepiece 2a for observing an optical endoscope image, and the endoscope eyepiece 2a of the endoscope 2. A camera cable 4 that is configured to be connectable and includes an imaging unit 10 that includes an imaging optical system 3a and an imaging element 3b, and a signal cable 19 that extends from the imaging unit 10 and transmits various electrical signals. An endoscope imaging device 3, a control device 5 to which one end of the camera cable 4 is connected, and to control the entire endoscope system 1 as a whole, and a cable 6 a from the control device 5. An illumination light beam for illuminating the subject is connected between the endoscope 2 and the display device 6 that receives an image signal output via the light guide cable 8 and displays the endoscope image. Mainly by the light source device 7 etc. It is configured.

  In the endoscope imaging device 3 according to the present embodiment applied to the endoscope system 1 configured as described above, the folding stop 9 is provided at a connection portion between the endoscope imaging device 3 and the camera cable 4. Is provided. The configuration in the vicinity of the bend preventing portion 9 and its internal configuration will be described in detail below with reference to FIG.

  As described above, the imaging unit 10 including the imaging optical system 3a, the imaging element 3b, and the like (not shown in FIG. 2; see FIG. 1) is disposed inside the endoscope imaging apparatus 3 of the present embodiment. ing. The imaging unit 10 is protected from the outside by a metal imaging unit case 14 as shown in FIG.

  A hermetic connector 13 having a plurality of electrical contact pins 12 is hermetically sealed at the rear end of the imaging unit case 14 (the end on the side to which the camera cable 4 is connected) using a joining means such as laser welding. It is joined to. In FIG. 2, in order to avoid complication of the drawing, the illustration of the plurality of electrical contact pins 12 is omitted, and only a part is shown.

  A flexible substrate 15 is soldered to one surface of the hermetic connector 13 (a surface facing the internal space of the imaging unit 10). The flexible substrate 15 is electrically connected to the image pickup device 3b and is mounted with a drive circuit for the image pickup device 3b.

  One surface of the receptacle 16 is engaged with the hermetic connector 13. The receptacle 16 is fixed by a nut portion 18 that is screwed and fixed to one end edge portion on the inner peripheral side of the cylindrical metal frame 17. Further, a cable insertion hole 17 b is formed in the other end portion of the metal frame 17. The cable insertion hole 17b is a hole formed with a diameter smaller than the maximum outer diameter of the metal frame 17, and the signal cable 19 is inserted into the hole.

  The receptacle 16, the metal frame 17, and the signal cable 19 constitute a cable unit 11.

  The signal cable 19 is formed by an outer sheath 21, a shield braid 22 that is a cable shield layer, and a plurality of cable core wires 20. Accordingly, the cable insertion hole 17b is set to be approximately equal to or slightly larger than the maximum diameter of the outer skin 21. A projecting portion 17c is formed at the peripheral edge of the cable insertion hole 17b.

  Further, a rear end exterior member 30 constituting a part of the exterior member is disposed on the outer peripheral side of the metal frame 17. The metal frame 17 is fitted to the inner peripheral side of the rear end of the hermetic connector 13 and is fixed by the rear end exterior member 30.

  The signal after being inserted into the metal frame 17 through the cable insertion hole 17b of the metal frame 17 on the other surface of the receptacle 16 (the surface opposite to the engagement surface with the hermetic connector 13). A plurality of cable core wires 20 of the cable 19 are respectively soldered. In addition, as shown in FIG. 2, a core wire accommodating portion 17 a that can accommodate a length including a margin length of the plurality of cable core wires 20 is secured inside the metal frame 17.

  The length of the shield braid 22 of the signal cable 19 is set so that the tip portion protrudes from the outer skin 21. The protruding portion of the shield braid 22 is folded back so as to cover the most distal portion from the inner peripheral side of the distal end portion of the outer skin 21 and further cover a part of the outer peripheral side near the distal end portion of the outer skin 21. A metal ring 23 made of a metal member is provided at the folded portion of the shield braid 22 so as to be covered from the outer peripheral side. The metal ring 23 is fixed by caulking at the tip of the signal cable 19. In this state, the distal end portion of the signal cable 19 is fitted in the cable insertion hole 17 b of the metal frame 17.

  Accordingly, the electromagnetic shield of the signal cable 19 in the endoscope imaging device 3 of the present embodiment is thereby formed by the shield braid 22, the metal frame 17, the hermetic connector 13, and the imaging unit case 14.

  The metal ring 23 is accommodated in advance in the cable insertion hole 17b of the projecting portion 17c of the metal frame 17 at the time of assembly. In this case, the metal ring 23 comes into contact with a stepped portion 17cc formed near the rear end in the cable insertion hole 17b inside the protruding portion 17c, so that the positioning of the metal ring 23 in the cable insertion hole 17b is performed. Has been made. The metal ring 23 is fastened and fixed by a plurality of screws 26 inserted from the side surface of the metal frame 17 (the axial direction of the metal frame 17; the direction orthogonal to the insertion direction of the signal cable 19). The metal ring 23 and the metal frame 17 are grounded (GND; ground) through the screw 26.

  An anti-bending member 27 serving as a cable protection member is provided at a portion from the outer peripheral side of the rear end side (projecting portion 17c) of the metal frame 17 to the outer peripheral side near the tip of the outer skin 21. The anti-bending member 27 is a component molded from an elastomer material or the like, for example. The inner peripheral surface of the bend preventing member 27 is in close contact with the outer skin 21 so as to ensure waterproofness between the two.

  A flange convex portion 27 a that protrudes to the outer peripheral side is provided at the base end portion of the anti-bending member 27 over the entire circumference. The flange convex portion 27 a forms a watertight seal portion that performs a watertight seal with the rear end exterior member 30.

  That is, on the rear end side of the rear end exterior member 30, a flange portion 30a that protrudes inward is formed. The flange convex portion 27a of the folding preventing member 27 is fixed between the flange portion 30a and the abutting step portion 17d of the metal frame 17 so as to be sandwiched. Thereby, the cable unit 11 and the imaging unit 10 are firmly and integrally fixed together with the fixing by the screw 26.

  On the other hand, a stepped portion 30 b is formed on the front end side of the rear end exterior member 30. One end surface of the intermediate exterior member 36 constituting a part of the exterior member is in contact with the stepped portion 30b. An O-ring 35 serving as a water-tight seal portion is disposed on the stepped portion 30 b of the rear end exterior member 30 on the contact surface with the intermediate exterior member 36. Thereby, the watertightness between the rear end exterior member 30 and the intermediate exterior member 36 is maintained.

  On the other hand, the inner peripheral surface on the distal end side of the intermediate exterior member 36 is inscribed with one end portion of the distal exterior member 37 constituting a part of the exterior member. An O-ring 38 for watertight sealing is disposed on an inscribed surface at one end of the tip exterior member 37. Thereby, the watertightness between the intermediate exterior member 36 and the front end exterior member 37 is maintained. In this case, a nut portion 24 is fixed to the outer peripheral edge portion of the imaging unit case 14. An O-ring groove for holding the O-ring 38 is formed by a portion on the outer peripheral side of the nut portion 24 and one end edge portion of the tip exterior member 37.

  The rear end exterior member 30 mainly functions as a protective member that covers the outer surface of the metal frame 17. The tip exterior member 37 mainly functions as a protective member that covers the outer surface of the imaging unit 10. The intermediate exterior member 36 functions as a protective member that connects the rear end exterior member 30 and the front end exterior member 37 and covers a part of the outer surface of the metal frame 17 and a part of the outer surface of the imaging unit 10. ing.

  In the endoscope imaging apparatus 3 of the present embodiment configured as described above, for example, when disassembling for repair or the like, the following procedure is performed.

  First, the screwed state between the rear end exterior member 30 and the hermetic connector 13 is released, and the rear end exterior member 30 is lowered rearward. As a result, the rear end exterior member 30 is separated from the hermetic connector 13 and the intermediate exterior member 36.

  Next, the connection state between the hermetic connector 13 and the receptacle 16 is released, and the cable unit 11 is separated from the imaging unit 10.

  Subsequently, the nut portion 18 is removed, and the receptacle 16 is moved forward by the margin length of the cable core wire 20. In this state, the solder of the plurality of cable core wires 20 is removed.

  The endoscope imaging apparatus 3 can be easily disassembled by the procedure as described above. Therefore, for example, in the case of repair due to the disconnection of the signal cable 19, the endoscope imaging apparatus 3 is disassembled according to the above-described procedure, and then the signal cable 19 is cut and replaced with another new signal cable 19. do it. In this case, after the rear end exterior member 30 and the metal frame 17 are removed from the failed signal cable 19 and attached to the signal cable 19 to be replaced this time, they can be reused without any problem.

  As described above, according to the first embodiment, the folding preventing member 27, which is a cable protection member, and the outer cover 21 of the signal cable 19 are configured to be in close contact with each other. The effect of preventing the cable 19 from bending can be enhanced.

  In addition, by simplifying the configuration of the watertight seal portion provided on the inner and outer diameters of the bend preventing member 27, it is possible to contribute to a reduction in the number of parts while reliably improving the watertightness. At the same time, the disassembly and assembly work that is performed at the time of repair or the like can be easily performed, which can contribute to improvement of maintenance such as repair management, maintenance, and maintenance.

  Next, an endoscope imaging apparatus according to a second embodiment of the present invention will be described below.

  The basic configuration of this embodiment is substantially the same as that of the first embodiment described above. Therefore, about the structure similar to the above-mentioned 1st Embodiment, description is abbreviate | omitted using the same code | symbol, and only a different site | part is explained in full detail below.

  FIG. 3 is an enlarged cross-sectional view of a main part showing a part of the endoscope imaging apparatus according to the second embodiment of the present invention (in the vicinity of the folding prevention part).

  The endoscope imaging apparatus 3A of this embodiment is applied to an endoscope system 1 as shown in FIG. 1 similar to the first embodiment described above.

  The configuration in the vicinity of the bend preventing portion 9A and its internal configuration in the endoscope imaging apparatus 3A of the present embodiment are as shown in FIG.

  In the endoscope imaging apparatus 3A of the present embodiment, an imaging unit 10 including an imaging optical system 3a, an imaging element 3b, and the like (not shown in FIG. 3, see FIG. 1) is disposed. This is the same as in the first embodiment. As shown in FIG. 3, the imaging unit 10 is protected from the outside by a metallic imaging unit case 14A.

  A hermetic connector 13A is hermetically joined to the rear end of the imaging unit case 14A (the end on the side to which the camera cable 4 is connected) using a joining means such as laser welding.

  One surface of the receptacle 16 is engaged with the rear end surface of the hermetic connector 13A. A cable core wire 20 is soldered to the electrical contact pin 12 of the receptacle 16.

  Further, a cylindrical fitting portion 39 is projected from the outer peripheral edge portion of the rear end portion of the hermetic connector 13A. The first metal frame 17 </ b> A is fitted on the inner peripheral surface side of the fitting portion 39. The first metal frame 17 </ b> A is fixed to the fitting portion 39 by screws 40.

  The first metal frame 17A has an inner surface step portion 17Aa formed on the inner peripheral surface of the end portion on the side to be fitted with the fitting portion 39, and the inner surface step portion 17Aa is in contact with the end surface of the receptacle 16. In the state, the first metal frame 17A is fixed. This prevents unintentional removal of the receptacle 16.

  Further, the rear end portion of the first metal frame 17A opens in a direction inclined at a predetermined angle. The second metal frame 17B is fitted on the inner peripheral side of the opening end. The second metal frame 17B is fixed to the first metal frame 17A with a predetermined screw (not shown). In addition, the length of the cable core wire 20 is set to a length having a sufficient margin inside the first metal frame 17A and the second metal frame 17B.

  The signal cable 19 is formed by an outer skin 21, a shield braid 22, and a plurality of cable core wires 20 in the same manner as in the first embodiment, and the assembly configuration thereof is the same as that in the first embodiment. .

  And the metal ring 23 provided in the one end part of the signal cable 19 is stored in the inner surface side of the rear end small diameter part 17Bc formed in the rear end side of the second metal frame 17B. At this time, the metal ring 23 comes into contact with the stepped portion 17Bcc, so that it is positioned with respect to the second metal frame 17B of the signal cable 19, that is, the endoscope imaging device 3A.

  On the rear end side (rear end small diameter portion 17Bc) of the second metal frame 17B, a bend preventing member 27A, which is a cable protection member, is molded so as to cover the outer peripheral side near the front end of the outer skin 21. The anti-bending member 27A is a component molded from, for example, an elastomer material. The inner peripheral surface of the anti-bending member 27A is in a state of being in close contact with the outer skin 21, thereby ensuring waterproofness between the two.

  The folding member 27A may be molded at a predetermined interval with respect to a single cable wound in a reel, for example, and the folding cable unit may be cut for use.

  A flange convex portion 27Aa projecting to the outer peripheral side is provided at the base end portion of the bend preventing member 27A over the entire circumference. The flange convex portion 27Aa is fixed in a form that is sandwiched between the rear end surface of the second metal frame 17B and the flange portion 30Aa of the rear end exterior member 30A. Thereby, the bend preventing member 27A is watertightly fixed between the second metal frame 17B and the rear end exterior member 30A.

  Further, as described above, the flange portion 30Aa of the rear end exterior member 30A sandwiches the flange convex portion 27Aa of the bend preventing member 27A with the second metal frame 17B, thereby fixing the bend preventing member 27A and the cable sheath 21. Also serves. Therefore, the cable unit 11A and the imaging unit 10 are firmly and integrally fixed together with the fixing by the screw 26.

  A step 30Ab is formed on the end surface on the front end side of the rear end exterior member 30A. In the step 30Ab, a watertight seal member 41 made of, for example, an elastomer material having an L-shaped cross section is disposed on the rear end and the inner peripheral surface of the intermediate exterior member 36A. Thereby, a watertight structure of the rear end portion of the intermediate exterior member 36A and the rear end exterior member 30A is formed.

  Further, a screw portion is formed on the inner peripheral surface of the rear end exterior member 30A on the proximal end side. On the other hand, a screw portion corresponding to the inner peripheral screw portion of the rear end exterior member 30A is formed on the outer peripheral surface on the base end side of the second metal frame 17B. The inner peripheral screw portion of the rear end exterior member 30A and the outer peripheral screw portion of the second metal frame 17B are screwed together so that both are connected. Other configurations are substantially the same as those in the first embodiment.

  In the endoscope imaging apparatus 3A of the present embodiment configured as described above, for example, when disassembling for repair or the like, the following procedure is performed.

  First, the screwed state between the rear end exterior member 30A and the second metal frame 17B is released, and the rear end exterior member 30 is lowered rearward. Thereby, the rear end exterior member 30 and the second metal frame 17B are separated.

  Next, the intermediate exterior member 36A is lowered rearward.

  Next, the screw 26 is loosened to release the connection between the second metal frame 17B and the anti-bending member 27A. Then, the folding preventing member 27 </ b> A and the cable unit 11 </ b> A are lowered rearward by the margin length of the cable core wire 20.

  Subsequently, a screw (not shown) for fixing the second metal frame 17B and the first metal frame 17A is removed, and the second metal frame 17B is lowered rearward. Next, the nut portion 24 is removed, and the tip exterior member 37A (see FIG. 3) is lowered. Further, the screw 40 is removed and the first metal frame 17A is lowered rearward.

  Next, the connection state between the hermetic connector 13 </ b> A and the receptacle 16 is released, and the cable unit 11 </ b> A is separated from the imaging unit 10. Then, the solder of the plurality of cable core wires 20 is removed.

  By the procedure as described above, the endoscope imaging apparatus 3A can be easily disassembled. For example, in the case of repair due to disconnection of the signal cable 19, each member can be reused by removing each member from the proximal end side of the cable unit 11 and reassembling after repairing the disconnection. .

  As described above, according to the second embodiment, the same effects as those of the first embodiment can be obtained.

  In addition, since the cable sheath 21 and the anti-bending member 27A are formed in a state of being in close contact with each other in advance, it is not necessary to set the semi-assembled product in a rubber molding machine.

1 is a system configuration diagram showing an outline of an endoscope system to which an endoscope imaging apparatus according to a first embodiment of the present invention is applied. The principal part expanded sectional view which expands and shows a part (near folding part vicinity) of the imaging device for endoscopes in the endoscope system of FIG. The principal part expanded sectional view which expands and shows a part (near folding part vicinity) of the imaging device for endoscopes of the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Endoscopy system 2 ... Endoscope 2a ... Endoscope eyepiece 3 ... Endoscope imaging device 3a ... Imaging optical system 3b ... Imaging element 4 ... Camera cable 5 ... Control device 6... Display device 6 a... Cable 7... Light source device 8... Light guide cables 9 and 9 A. 13A: Hermetic connectors 14, 14A ... Imaging unit case 15 ... Flexible substrate 16 ... Receptacle 17 ... Metal frame 17a ... Core wire housing portion 17A ... First metal frame 17B ... Second metal frame 19 ... Signal cable 20 ... Cable core wire 21 ... Outer sheath 22 ... Shield braid 23 ... Metal rings 27 and 27A ... Anti-bending members 30 and 30A ... Rear end exterior members 36 and 36A ... Intermediate exterior member 3 , 37A ...... distal outer member 35 and 38 ...... O-ring 41 ...... watertight seal Attorney Attorney Susumu Ito

Claims (4)

In an endoscope imaging apparatus comprising an imaging unit and a signal cable extending from the imaging unit and having a cable protection member that is provided in the vicinity of an extension portion of the signal cable and protects the signal cable.
The cable protection member is molded so that the inner surface directly adheres to the outer surface of the signal cable, and the outer surface is connected to the exterior member of the endoscope imaging device via a watertight seal portion. And the front end side of the signal cable is projected by a predetermined length, and is molded,
On the outer surface of the tip protruding portion of the signal cable, a cable shield layer and a metal member are provided,
The endoscope image pickup apparatus, wherein the cable shield layer and the metal member are configured to be electrically connected to a metal member on the endoscope image pickup apparatus side. The endoscope imaging apparatus according to claim 1, wherein the cable protection member is made of an elastomer material. The endoscope imaging apparatus according to claim 1, wherein the cable protection member is formed by using the metal member that conducts to the cable shield layer as a part of a mold. The endoscope imaging apparatus according to claim 1, wherein the cable protection member is molded substantially integrally with the signal cable.

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