JP7181170B2 - Endoscope imaging device and endoscope - Google Patents

Description

The present invention relates to an endoscope imaging device and an endoscope for acquiring an image of an observation target, and more particularly to a holding member that connects a glass member and a lens barrel, and a connecting member that holds a signal cable with respect to the holding member. It relates to an endoscope imaging device and an endoscope having an engaging portion that engages the .

2. Description of the Related Art In recent medical care, diagnosis using an endoscope system including a light source device for an endoscope, an endoscope (endoscope), and a processor device is widely performed.
It has an insertion section that is inserted into the body of the subject, and illumination light from the endoscope light source device is irradiated onto the observation target through the insertion section. 2. Description of the Related Art An endoscope uses an imaging device to capture an image of an observation target irradiated with illumination light to generate an image signal. The processor device processes the image signal generated by the endoscope to generate an observation image for display on the monitor. The imaging element is electrically connected to a signal cable via a flexible wiring board, and the signal cable is electrically connected to the processor device. As for the endoscope, it is desired that the insertion portion inserted into the body of the subject is thinner because the physical burden on the subject is smaller.

In addition, the image pickup device, lens barrel, etc. are provided at the distal end of the insertion section. The tip of the insertion section is also bendable. In this case, since the tip of the insertion portion inserted into the body is bent in the state where the imaging device and the lens barrel are provided as described above, force is applied to the joints of each member, and the joints peel off. etc., may be damaged. Endoscopes have been proposed in which joints are strengthened in order to suppress damage such as detachment.

For example, Patent Literature 1 discloses an electronic endoscope provided with a connecting member that connects a lens barrel and a signal cable and covers at least one surface of a prism. In the electronic endoscope of Patent Document 1, the end of the cable cover of the signal cable is adhered to the inside of one end of the connecting member with an adhesive, and the other end of the connecting member is formed on the flange of the lens barrel. A pair of claws are engaged. Therefore, even if the signal cable is pulled away from the connecting member, peeling of the joint between the signal cable and the circuit board or breakage of the signal cable will not occur.

Patent Document 2 discloses an image area sensor that photoelectrically converts an optical image formed through a photographing lens, a flexible substrate electrically connected to the image area sensor, and a signal cable electrically connected to the flexible substrate. a prism holder for holding a photographing lens or a prism; and a connecting member for connecting the prism holder and the signal cable, one end of which is fixed to the signal cable and the other end of which is provided with a claw for engaging the prism holder. and a ring member attached to at least part of the outer circumference of the prism holder, the ring member being fixed to the main body of the endoscope. This structure prevents deformation of the optical member holding portion due to an external force via the connecting member.

JP 2012-157472 A JP 2016-158770 A

In both Patent Document 1 and Patent Document 2, claws are used for fixing. When attempting to firmly fix the claw portion using the claw portion as in Patent Documents 1 and 2, the claw portion needs to be enlarged because the claw portion is configured to be hooked, and the insertion portion of the endoscope is increased. Make larger. However, as described above, as an endoscope, a thin insertion section is desired because the physical burden on the subject is small. As described above, it is difficult to achieve strong fixation using the claw portion without increasing the size.

An object of the present invention is to provide an endoscope imaging apparatus and an endoscope that suppress an increase in size and achieve firm fixation.

In order to achieve the above object, the present invention provides a lens barrel having an imaging lens therein, an imaging device that receives light that has passed through the imaging lens and photoelectrically converts the light, and a lens barrel and the imaging device. at least one glass member disposed between; a holding member connecting the glass member and the lens barrel; a signal cable electrically connected to the imaging device; and a signal cable connected to the holding member. , a connecting member for holding, a holding member, and an engaging portion for engaging the connecting member, wherein the engaging portion is provided on at least one projection provided on the holding member and on the connecting member Also provided is an endoscopic imaging device having a recess that engages the protrusion of the retaining member.

The holding member has two projections that face each other with the glass member interposed therebetween, and the connecting member has a pair of arms that face each other. is provided, and it is preferable that the concave portion at the tip of the arm portion of the connecting member engages with the convex portion of the holding member.
It is preferable that the convex portion of the holding member covers at least part of the side surface of the glass member.
At least one glass member has a prism having an incident surface and an output surface perpendicular to each other, the prism is arranged such that the incident surface faces the imaging lens and the output surface faces the imaging element, and the convex portion of the holding member is , are arranged so as to face each other across a side surface orthogonal to the entrance surface and the exit surface of the prism.
It is preferable that the pair of arms be bent such that the distal ends of the arms are closer to each other than the proximal ends of the arms.
The recess preferably includes an opening therethrough.
Another object of the present invention is to provide an endoscope having the endoscopic imaging device of the present invention.

ADVANTAGE OF THE INVENTION According to this invention, the endoscope which can suppress the enlargement of a size and can implement|achieve firm fixation, and an endoscope which has an endoscope imaging device can be provided.

1 is a schematic perspective view showing an example of an endoscope system having an endoscope according to an embodiment of the invention; FIG. 1 is a schematic perspective view showing a first example of an endoscope imaging device for an endoscope according to an embodiment of the present invention; FIG. 1 is a schematic perspective view showing a first example of an endoscope imaging device for an endoscope according to an embodiment of the present invention; FIG. 1 is a schematic side view showing a first example of an endoscope imaging device for an endoscope according to an embodiment of the present invention; FIG. 1 is a schematic perspective view showing a connecting member of a first example of an endoscope imaging device for an endoscope according to an embodiment of the present invention; FIG. 1 is a schematic diagram showing an example of a circuit board of a first example of an endoscope imaging device according to an embodiment of the present invention; FIG. FIG. 2 is a schematic perspective view showing a second example of an endoscope imaging device for an endoscope according to an embodiment of the present invention; FIG. 2 is a schematic side view showing a second example of an endoscope imaging device for an endoscope according to an embodiment of the present invention;

The endoscope imaging apparatus and endoscope of the present invention will be described in detail below based on preferred embodiments shown in the accompanying drawings.
It should be noted that the drawings described below are examples for explaining the present invention, and the present invention is not limited to the drawings shown below.
In addition, the angles and the like in the following description include the error range that is generally allowed in the relevant technical field.

[Endoscope system]
An endoscope system irradiates illumination light (not shown) to an observation site such as the body of a subject to be observed, captures an image of the observation site, and displays the observation site based on an image signal obtained by imaging. It generates an image and displays a display image.
Here, FIG. 1 is a schematic perspective view showing an example of an endoscope system having an endoscope according to an embodiment of the present invention.
As shown in FIG. 1, an endoscope system 10 includes an endoscope 12 that captures an image of an observation site in a living body (inside a subject) that is an observation target, and illumination light that irradiates the observation site to the endoscope 12. A light source device for an endoscope (hereinafter simply referred to as a light source device) 14 that supplies the It has An operation input unit 19 such as a keyboard and a mouse is connected to the processor device 16 .

The endoscope 12 includes an insertion section 12a to be inserted into a subject such as a patient's body, and an operation section 12b provided at the proximal end portion of the insertion section 12a. In the endoscope 12, the insertion section 12a side is the distal end side. A universal cord 12c is connected to an operation portion 12b of the endoscope 12. As shown in FIG. The universal cord 12c is connected to the light source device 14 via the connector 12d. Also, the light source device 14 and the processor device 16 are connected.
The processor unit 16 receives an image signal output from the endoscope imaging device 20 (see FIGS. 2 and 3) of the endoscope 12 via the universal code 12c, generates a video signal, and outputs it to the monitor 18. do. As a result, a display image of an observation site such as the inside of the body is displayed on the monitor 18 .
The operation portion 12b of the endoscope 12 is connected to the light source device 14 as described above. Light is supplied from the light source device 14 to the distal end portion 12e of the endoscope 12 and emitted from the distal end surface 12f. Also, the distal end portion 12e of the endoscope 12 can be bent.
An angle knob 13a of the operation portion 12b is provided. When the user operates the angle knob 13a, the distal end portion 12e is bent and can be directed in various directions.

In addition to the angle knob 13a, the operation unit 12b also includes a forceps port for inserting a treatment instrument, an air/water supply button operated when air or water is supplied from the air/water supply nozzle, and a still image. A freeze button (not shown), a zoom operation section 13b, and a mode changeover switch 13c are provided for this purpose. The zoom operation unit 13b is used when enlarging or reducing the observation target. The mode changeover switch 13c is used for switching observation modes when the endoscope system 10 has a plurality of observation modes.

[First example of endoscope imaging device]
2 and 3 are schematic perspective views showing a first example of an endoscope imaging device for an endoscope according to an embodiment of the present invention. 2 and 3, the orientation of the endoscope imaging device is different, showing different sides. FIG. 4 is a schematic side view showing a first example of an endoscope imaging device for an endoscope according to an embodiment of the present invention.
The endoscope imaging device 20 shown in FIGS. 2 and 3 is mounted on the distal end portion 12e of the insertion section 12a of the endoscope system 10 shown in FIG.
The endoscope imaging apparatus 20 acquires an image of an object to be observed, and includes, for example, a lens barrel 22, a holding member 24, an imaging device 25, a circuit board 26 on which the imaging device 25 is mounted, and a holding device. and a connecting member 30 that holds the signal cable 28 against the member 24 . The endoscope imaging apparatus 20 also has a holding member 24 and an engaging portion 32 that engages the connecting member 30 .

The signal cable 28 is electrically connected to the imaging element 25 , and the imaging element 25 is electrically connected to the processor unit 16 (see FIG. 1) via the circuit board 26 and the signal cable 28 . The signal cable 28 is arranged within the universal cord 12c (see FIG. 1). Note that the configuration of the signal cable 28 is not particularly limited. The signal cable 28 is, for example, a multi-core cable in which a large number of signal lines 29 are bundled, a shield conductor is provided around the cable, and the cable is housed in a cylindrical jacket. For example, four signal lines 29 are provided. The number of signal lines is not particularly limited, and may be two, three, or five or more.

The lens barrel 22 is a cylindrical member, and an imaging lens 23 for imaging an observation target is provided inside. The configuration of the imaging lens 23 is not particularly limited, and may be a configuration having a plurality of lenses arranged side by side in the direction of the optical axis C, or a configuration having a single lens.
Here, as shown in FIGS. 2 and 3, the direction parallel to the optical axis C is defined as the X direction. Of the two directions perpendicular to the optical axis C, one is the Y direction and the other is the Z direction. The Y direction corresponds to the width direction of the endoscope imaging device 20 , and the Z direction corresponds to the height direction of the endoscope imaging device 20 .

The holding member 24 has a cylindrical attachment tube portion 24a fitted to the outer periphery of the lens barrel 22, and a base portion 24b that is integrally provided continuously with the attachment tube portion 24a. A prism 34 is provided on the rear surface 24e of the base 24b. The holding member 24 connects the glass member such as the prism 34 and the lens barrel 22 .
The prism 34 is, for example, a right-angle prism having an incident surface 34a and an exit surface 34b perpendicular to each other. The incident surface 34a is arranged to face the rear surface 24e of the base 24b. Thereby, the incident surface 34 a faces the imaging lens 23 .
A cover glass 33 is arranged on the imaging element 25 . A prism 34 is arranged on the cover glass 33, and the output surface 34b of the prism 34 and the imaging device 25 face each other.
The cover glass 33 protects the light receiving surface (not shown) of the imaging device 25 . The prism 34 guides the light that has passed through the imaging lens 23 to the light receiving surface of the imaging device 25 .

The imaging element 25 is provided, for example, on a surface 26a at one end of the circuit board 26 in parallel with the optical axis C of the imaging lens 23, and arranged below the base 24b of the holding member 24. . A plurality of connection terminals (not shown) for inputting/outputting signals or electric power to/from the image sensor 25 and the electronic component 36 are provided on the back surface 26b of the circuit board 26 opposite to the light receiving surface of the image sensor 25. .

The circuit board 26 is composed of a flexible board, for example, a flexible wiring board. As shown in FIGS. 2 to 4, the circuit board 26 is bent at two points and has a first curved portion 26c and a second curved portion 26d. Two electronic components 36, for example, are provided on the surface 26a of the circuit board 26 between the first curved portion 26c and the second curved portion 26d. For example, three electronic components 36 are provided on the surface 26a of the circuit board 26 that is continuous with the second curved portion 26d. The electronic component 36 will be explained later.
By bending the circuit board 26 at two points and providing a first curved portion 26c and a second curved portion 26d, the size can be reduced in the X direction, and the endoscope imaging device 20 can be downsized in the X direction. can be done. That is, the endoscope imaging device 20 can be shortened. As shown in FIG. 4, a signal line 29 of a signal cable 28 is electrically connected to a connection terminal (not shown) provided on the back surface 26b of the other end of the circuit board 26. As shown in FIG.
The number of bends of the circuit board 26 is not limited to two, and may be determined as appropriate according to the device configuration such as the number of electronic components 36, the size of the device, or the like.

The imaging device 25 receives light that has passed through the imaging lens 23 and photoelectrically converts the light. The imaging element 25 photoelectrically converts the optical image of the observation target to obtain an imaging signal.
In the endoscope imaging device 20, at least one glass member is arranged between the lens barrel 22 and the imaging element 25. The at least one glass member is, for example, the cover glass 33 and the prism 34 described above. However, the at least one glass member is not particularly limited to the cover glass 33 and the prism 34 described above.

The engaging portion 32 has at least one protrusion provided on the holding member 24 and a recess provided on the connecting member 30 that engages with the protrusion of the holding member 24 . At the engaging portion 32 , the holding member 24 and the connecting member 30 can be firmly fixed by engaging the convex portion of the holding member 24 and the concave portion of the connecting member 30 . In addition, the concave portion of the connecting member 30 also includes a penetrating opening portion, which will be described later.

Two protrusions are provided on the base 24b of the holding member 24 shown in FIGS. 2 and 3 so as to face each other with the prism 34 interposed therebetween. The two convex portions 24c and 24d cover a part of the side surface 34c of the prism 34, and the prism 34 is sandwiched and fixed by the two convex portions 24c and 24d. A side surface 34c of the prism 34 is a surface orthogonal to the entrance surface 34a and the exit surface 34b.
In the holding member 24, the convex portion 24c (see FIG. 2) of the base portion 24b is, for example, square. A convex portion 24d (see FIG. 3) of the base portion 24b is, for example, a pentagon. By making the two projections different shapes, it is easy to grasp the orientation of the holding member at the time of assembly. Furthermore, by pressing the prism against the larger projection, the prism can be easily positioned and assembled easily.

The connecting member 30 holds the signal cable 28 with respect to the holding member 24 .
Here, FIG. 5 is a schematic perspective view showing a connecting member of the first example of the endoscope imaging device for the endoscope according to the embodiment of the present invention.
As shown in FIG. 5, the connecting member 30 has a circular arc formed by bending one plate material, and a holding portion 40a having a plate-like base portion 40f continuous with the circular arc. In the connecting member 30, the holding portion 40a side is the proximal end 41a. When the base portion 40 f is crimped so as to press the signal cable 28 , the base portion 40 f is bent along the outer skin of the signal cable 28 .
Arm portions 40b are provided on flat plate-shaped base portions 40f that face each other across an opening in the holding portion 40a. The connecting member 30 has a pair of arm portions 40b. The arm portion 40b is bent outward from the holding portion 40a at the proximal end 41a side, and then extends linearly. For this reason, the pair of arm portions 40b has a larger distance between the distal ends 41b than the proximal ends 41a, and this distance is appropriately determined according to the projections of the holding member 24. As shown in FIG. Openings 40c and 40d are provided at the tip 41b of each arm 40b.

The opening 40c of the arm portion 40b engages with the convex portion 24c of the holding member 24. As shown in FIG. The opening 40d of the arm portion 40b engages with the convex portion 24d of the holding member 24. As shown in FIG. The shape of the opening 40c is the same as the outer shape of the projection 24c in size and shape. Further, the shape of the opening 40d is the same as the outer shape of the projection 24d in size and shape.
Here, the shape of the opening 40c described above should be the same as the outer shape of the protrusion 24c in size and shape, and the shape of the opening 40d should be the same as the outer shape of the protrusion 24d in size and shape. Being includes a margin of error that is generally accepted in the relevant technical field. For this reason, the opening 40c and the protrusion 24c may be any of so-called clearance fit, intermediate fit, and interference fit. The opening 40d and the projection 24d may be either clearance fit, intermediate fit or interference fit.
It should be noted that, in the following description as well, "same size and shape" includes the error range that is generally allowed in the relevant technical field as described above.

As described above, due to the configuration having the engaging portions 32 that engage the openings 40c and 40d of the pair of arm portions 40b and the convex portions 24c and 24d of the holding member 24, the concave portions fit into the convex portions. The length of the endoscopic imaging device 20 in the Y direction orthogonal to the optical axis C can be shortened, and an increase in the size of the endoscopic imaging device 20 can be suppressed. Moreover, strong fixation between the holding member 24 and the connecting member 30 can be realized.
By matching the thickness of the arm portion 40b with the height of the projections 24c and 24d, the openings 40c and 40d of the pair of arm portions 40b are engaged with the projections 24c and 24d of the holding member 24, respectively. , the length in the Y direction orthogonal to the optical axis C of the endoscope imaging device 20 can be further shortened, and with this configuration, the endoscope imaging device 20 can be made more compact.

In the connecting member 30, the pair of arm portions 40b are preferably bent so that the distal ends 41b of the arm portions 40b are closer to each other than the proximal ends 41a of the arm portions 40b. That is, it is preferable that the pair of arm portions 40b be bent in the closing direction. Accordingly, by spreading the arm portion 40b once, the openings 40c and 40d of the arm portion 40b can be fitted into the protrusions 24c and 24d of the holding member 24, thereby facilitating assembly.
As described above, the pair of arm portions 40b is preferably bent so that the distal ends 41b of the arm portions 40b are closer to each other than the proximal ends 41a of the arm portions 40b, but this is the state of the parts before assembly. good,
Further, although the openings 40c and 40d are provided through the arm portion 40b, the present invention is not limited to this.
The connecting member 30 is held with the signal cable 28 attached to the inner side 40e of the holding portion 40a. The method of attaching the signal cable 28 is not particularly limited as long as the signal cable 28 does not come off from the holding portion 40a and the signal line 29 does not come off when the endoscope is used. Attached using adhesive.

In addition, in the holding member 24, the two protrusions 24c and 24d may have different sizes and shapes as described above, or may have the same size and shape, that is, congruent.
In addition, in the holding member 24, the shape of the protrusions is not particularly limited to the above-described quadrangle and pentagon, and may be a circle, an ellipse, or a polygon such as a triangle or hexagon. It may be a shape made by hand. Furthermore, it is not limited to one shape, but may be a plurality of same shapes arranged or a specific pattern.
In the engaging portion 32, one convex portion and one concave portion are engaged at one portion, but the engaging portion is not limited to one, and one convex portion is engaged with a plurality of portions. A configuration having a part may be used.

It should be noted that the size of the convex portion of the holding member is preferably, for example, a size that covers at least a portion of the side surface 34c of the prism 34. As shown in FIG. By setting the size of the convex portion to cover at least a part of the side surface 34c of the prism 34, the prism 34 can be held and fixed more stably, and when assembled, the prism 34 can be attached to the holding member. can be used to position the prism in the Y direction.
The upper limit of the size of the convex portion of the holding member can be a size that covers the entire side surface 34 c of the prism 34 .
Furthermore, in the holding member 24, the prism 34 and the circuit board 26 are surrounded by the arm portion 40b by providing the convex portion 24c and the convex portion 24d facing each other. Thereby, the engagement between the holding member 24 and the connecting member 30 can be stabilized, and the prism 34 and the circuit board 26 can be protected.
Although the holding member 24 is configured to have two projections 24c and 24d, it is not limited to this and may have three or more projections as long as the size is not increased. That is, the number of engaging portions can be three or more.

The prism 34 guides the light from the imaging lens 23 to the imaging device 25, and is not limited to a rectangular prism. Note that the prism 34 is not necessarily required depending on the arrangement position of the imaging device 25 .

As the imaging element 25, a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor can be used. For example, by using the prism 34 that bends the optical axis C of the imaging lens 23 at a right angle, the degree of freedom of the arrangement position of the imaging device 25 can be increased, and the size of the base 24b of the holding member 24 is not limited. A large imaging element 25 can be used.
After the holding member and the prism are adhesively fixed, they are sandwiched between the arm portions from the side surfaces, and the arm portion, the holding member and the prism are connected by adhesion. Bonding between the holding member and the prism is also strengthened by adhering the arm portion from the side. Further, by bonding not only the side surface of the holding member but also the side surface of the prism and the arm portion, the fixing strength of the arm portion is increased.
The strength of the connection between the holding member and the arm is that the protrusion and the opening (recess) have the same shape and size, and that the cross section of the arm receives forces in the X and Z directions. The mechanical strength of the endoscope imaging device 20 is increased. On the other hand, if the claw portion is used for fixing as in the above-mentioned Patent Documents 1 and 2, when the distal end portion of the insertion portion of the endoscope is bent and force is applied in the X direction, The claw will open and come off.

<Circuit board>
Next, the circuit board 26 will be explained.
FIG. 6 is a schematic diagram showing an example of the circuit board of the first example of the endoscopic imaging device according to the embodiment of the present invention. 6 shows the circuit board 26 before being bent.
For example, as shown in FIG. 6, the circuit board 26 has an image sensor 25 and electronic components 36 arranged at predetermined positions on a surface 26a. For example, at the other end of the circuit board 26, the rear surface 26b and the shield conductor (not shown) of the signal cable 28 are joined by soldering, for example. A signal line 29 of the signal cable 28 is electrically connected to a connection terminal (not shown) provided on the rear surface 26b.
By joining the shield conductor of the signal cable 28 to the rear surface 26b, the heat generated from the imaging element 25 and the electronic components 36 can be discharged from the circuit board 26 via the signal cable 28, thereby improving the endoscope imaging apparatus. The heat dissipation of 20 can be improved.

In FIG. 6, for example, the imaging element 25 and two electronic components 36 are provided on the surface 26a of the circuit board 26 with a first bending region 27a therebetween. are provided with a second bending region 27b therebetween. The first bending region 27a corresponds to the first curved portion 26c, and the second bending region 27b corresponds to the second curved portion 26d.
In the circuit board 26, the first bending area 27a is bent so that the imaging element 25 and the electronic component 36 face each other, and the second bending area 27b is bent so that the back surface 26b of the circuit board 26 faces each other. As a result, the circuit board 26 has a first curved portion 26c and a second curved portion 26d as shown in FIGS.

The electronic component 36 is for driving the imaging device 25 and includes, but is not limited to, a regulator, a resistor, a capacitor, and the like.

[Second example of endoscope imaging device]
The endoscope imaging device 20 is not limited to the configuration shown in FIGS. 2 to 4. FIG. A second example of the endoscope imaging apparatus will be described below.
FIG. 7 is a schematic perspective view showing a second example of the endoscope imaging device for the endoscope of the embodiment of the present invention, and FIG. 8 is an endoscope imaging device for the endoscope of the embodiment of the present invention. It is a schematic side view showing a second example of.
7 and 8, the same components as those of the endoscope imaging apparatus 20 shown in FIGS. 2 to 4 and the connecting member 30 shown in FIG. 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The endoscope imaging device 21 shown in FIGS. 7 and 8 differs from the endoscope imaging device 20 shown in FIGS. Further, it differs in that the prism 34 is not provided. Other configurations are the same as those of the endoscope imaging apparatus 20 shown in FIGS.

In the endoscope imaging device 21 shown in FIGS. 7 and 8, the circuit board 50 has a configuration in which the supporting portion 50b is provided perpendicularly to the flat base portion 50a. An imaging element 25 is provided on the support surface 50d of the support portion 50b. A cover glass 33 is provided on the imaging device 25 and covers a light receiving surface (not shown) with the cover glass 33 .
A cover glass 33 is arranged on the rear surface 24 e of the base portion 24 b of the holding member 24 , and an imaging device 25 is arranged with a light receiving surface (not shown) facing the imaging lens 23 .
A surface 50c of the circuit board 50 is provided with a plurality of connection terminals (not shown) for inputting/outputting signals or electric power to/from the imaging device 25 and the electronic component 36. FIG. A signal line 29 of a signal cable 28 is electrically connected to a connection terminal on the surface 50 c of the circuit board 50 .
The configuration of the circuit board 50 is not particularly limited, and may be a flexible wiring board or a rigid board. A printed wiring board can be used as the rigid board.

The endoscope image pickup device 21 shown in FIGS. 7 and 8 can also obtain the same effect as the endoscope image pickup device 20 . Also in the endoscope imaging device 21, the openings 40c and 40d of the pair of arm portions 40b and the engaging portions 32 that engage the convex portions 24c and 24d of the holding member 24 are provided, so that the convex portions and the concave portions are formed. , the length of the endoscopic imaging device 20 in the Y direction perpendicular to the optical axis C can be shortened, and an increase in the size of the endoscopic imaging device 20 can be suppressed. Moreover, strong fixation between the holding member 24 and the connecting member 30 can be achieved.

The present invention is basically configured as described above. Although the endoscopic imaging apparatus and endoscope of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the scope of the present invention. Of course you can.

10 endoscope system 12 endoscope 12a insertion portion 12b operation portion 12c universal cord 12d connector 12e tip portion 12f tip surface 13a angle knob 13b zoom operation portion 13c mode changeover switch 14 light source device 16 processor device 18 monitor 19 operation input portion 20 , 21 endoscope imaging device 22 lens barrel 23 imaging lens 24 holding member 24a mounting cylinder portion 24b base portion 24c, 24d convex portion 24e rear surface 25 imaging element 26 circuit board 26a front surface 26b rear surface 26c first curved portion 26d second Curved portion 27a First bending region 27b Second bending region 28 Signal cable 29 Signal wire 30 Connecting member 32 Engaging portion 33 Cover glass 34 Prism 34c Side 36 Electronic component 40a Holding portion 40b Arm portion 40c Opening 40d Opening 40e Inside 40f Base 41a Base 41b Tip 50 Circuit Board 50a Base 50b Support 50c Surface 50d Support Surface C Optical Axis

Claims (6)

a lens barrel in which an imaging lens is provided;
an imaging device that receives light that has passed through the imaging lens and performs photoelectric conversion;
at least one glass member disposed between the lens barrel and the imaging element;
a holding member that connects the glass member and the lens barrel;
a signal cable electrically connected to the imaging device;
a connecting member that holds the signal cable with respect to the holding member;
Having the holding member and an engaging portion that engages the connecting member,
The engaging portion has at least one protrusion provided on the holding member and a recess provided on the connecting member that engages with the protrusion of the holding member ,
Two of the protrusions of the holding member are provided so as to face each other and sandwich the glass member,
The connecting member has a pair of arm portions facing each other, and the recess is provided at the tip of each of the arm portions,
An imaging apparatus for endoscopes, wherein the concave portion at the tip of the arm portion of the connecting member is engaged with the convex portion of the holding member . The endoscopic imaging apparatus according to claim 1 , wherein said convex portion of said holding member covers at least part of a side surface of said glass member. The at least one glass member has a prism having an incident surface and an output surface perpendicular to each other, and the prism is arranged such that the incident surface faces the imaging lens and the output surface faces the imaging device,
3. The endoscopic image pickup apparatus according to claim 1 , wherein said convex portions of said holding member are arranged to face each other across a side surface orthogonal to said entrance surface and said exit surface of said prism. 2. The endoscopic imaging apparatus according to claim 1 , wherein said pair of arm portions are bent such that distal ends of said arm portions are closer to each other than proximal ends of said arm portions. The endoscopic imaging device according to any one of claims 1 to 4 , wherein the recess includes an opening that penetrates. An endoscope having the endoscopic imaging device according to any one of claims 1 to 5 .

Images