CN214965300U

CN214965300U - Illuminating mechanism of portable endoscope

Info

Publication number: CN214965300U
Application number: CN202120679026.9U
Authority: CN
Inventors: 韩庆; 夏鹏; 葛波
Original assignee: Eaglescope Medical Technology Co ltd
Current assignee: Eaglescope Medical Technology Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-12-03
Anticipated expiration: 2031-04-01

Abstract

The utility model relates to a lighting mechanism of portable endoscope, its innovation point lies in: including handle casing, LED module, light source frame, optical lens group and leaded light optic fibre to box-like structure, the light source frame is established in the handle casing, LED module and optical lens group are all established in the light source frame, be equipped with reflector or reflective coating on the inner wall of light source frame, leaded light optic fibre's one end is located one side of optical lens group, and the other end inserts in the optical lens of endoscope, the light that the LED module sent is in reflector or reflective coating reflection entering optical lens group, passes through again after that optical lens group is with optical transmission to leaded light optic fibre in. The utility model discloses a built-in lighting mechanism has not only simplified the illumination structure, has reduced the length of optic fibre greatly, the cost is reduced, and the illuminating effect has also obtained great improvement.

Description

Illuminating mechanism of portable endoscope

Technical Field

The utility model relates to an illuminating mechanism, concretely relates to illuminating mechanism of portable endoscope.

Background

The medical endoscope camera system is widely applied to clinical minimally invasive surgery, has the advantages of small wound, less pain, quick recovery and the like, and ensures that a high-quality real-time image is crucial to smooth operation. Wherein the light source equipped for the medical endoscope camera system provides a good illumination environment for high-quality image acquisition. With the development of LED technology, the LED light source gradually replaces a xenon lamp as the first choice of the endoscope light source due to stable performance, reliable light emitting time and little heat dissipation. The traditional endoscope light source is generally an external illuminating device, has a large volume and provides a light source for endoscopic surgery by transmitting light to the front end of a lens through an optical fiber, and the illuminating structure has the following defects: firstly, the external light source is provided with independent machine frames, a mainboard, heat dissipation parts and the like, so that the cost is higher, and the whole power consumption of the light source is high, the volume is large and the operation is inconvenient; secondly, not only need longer optic fibre, and the higher luminous flux loss just needs to select the higher led module of power in the design among the light transmission process, and thereby the led lamp module of high power needs the fan heat dissipation to cause the power consumption increase of complete machine and great environmental noise also has certain influence to the operation environment.

Disclosure of Invention

The utility model aims at: the built-in illuminating mechanism of the portable endoscope not only simplifies the illuminating structure, greatly reduces the length of optical fibers and the cost, but also greatly improves the illuminating effect.

In order to achieve the above purpose, the technical scheme of the utility model is that: the lighting mechanism of a portable endoscope has the innovation points that: including handle casing, LED module, light source frame, optical lens group and leaded light optic fibre to box-like structure, the light source frame is established in the handle casing, LED module and optical lens group are all established in the light source frame, be equipped with reflector or reflective coating on the inner wall of light source frame, leaded light optic fibre's one end is located one side of optical lens group, and the other end inserts in the optical lens of endoscope, the light that the LED module sent is in reflector or reflective coating reflection entering optical lens group, passes through again after that optical lens group is with optical transmission to leaded light optic fibre in.

In the above technical scheme, a cavity is formed in the handle shell, the light source frame is arranged in the cavity, one end of the light guide fiber is fixed on the handle shell, and the end of the light guide fiber extends into the light source frame and is arranged opposite to the optical lens group.

In the above technical solution, the light source frame is a U-shaped frame.

In the technical scheme, the handle shell is internally provided with the image sensor and the heat insulation layer, and the heat insulation layer is positioned between the image sensor and the light source frame.

In the technical scheme, the heat insulation layer is made of asbestos or glass fiber.

In the technical scheme, the optical lens group is formed by integrating a double convex lens and a meniscus lens through ultraviolet photosensitive adhesive, one side surface of the double convex lens is combined with the concave surface of the meniscus lens into a whole, the other side surface of the double convex lens is arranged opposite to the LED module, and the convex surface of the meniscus lens is arranged opposite to the light guide optical fiber.

In the above technical solution, the optical lens group is an aspheric condenser lens, and two side surfaces of the aspheric condenser lens are respectively arranged opposite to the LED module and the light guide fiber.

In the above technical solution, the handle case is a heat dissipation case made of aluminum alloy, or a heat dissipation case made of stainless steel.

In the above technical scheme, the reflective mirror is an acrylic reflective mirror or a stainless steel reflective mirror.

In the above technical solution, the light reflecting coating is a silver coating or a chromium coating.

The utility model discloses the positive effect who has is: after the lighting mechanism of the portable endoscope is adopted, the utility model comprises a handle shell, a LED module, a light source frame, an optical lens group and a light guide optical fiber which are of an opposite-combined structure, wherein the light source frame is arranged in the handle shell, the LED module and the optical lens group are both arranged in the light source frame, a reflector or a reflecting coating is arranged on the inner wall of the light source frame, one end of the light guide optical fiber is positioned at one side of the optical lens group, the other end of the light guide optical fiber is inserted into an optical lens of the endoscope, light emitted by the LED module is reflected into the optical lens group through the reflector or the reflecting coating, and then the light is transmitted into the light guide optical fiber through the optical lens group;

the utility model discloses an in placing the handle of endoscope in the LED module in, the light that the LED module sent scribbles the reflection through reflector or leaded light and gets into optical lens group, and passes to the optical lens of endoscope through leaded light optic fibre in the transmission and illuminate the inspection position after optical lens group's effect to provide reliable light source for endoscopic surgery's application scene. Because the utility model discloses place the handle of endoscope in the lighting mechanism in, replaced external lighting device's among the prior art structural scheme, not only reduced because the luminous flux of diffuse reflection loss to increase the utilization ratio of light, reduced the length of optic fibre moreover greatly, the cost is reduced, and the illuminating effect has also obtained great improvement.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a first embodiment of the illumination mechanism of the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the illumination mechanism of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, but is not limited thereto.

As shown in fig. 1, 2 and 3, an illumination mechanism of a portable endoscope includes a handle housing 1, an LED module 2, a light source frame 3, an optical lens group 5 and a light guide optical fiber 6, wherein the handle housing 1 is of an opposite-type structure, the light source frame 3 is disposed in the handle housing 1, the LED module 2 and the optical lens group 5 are both disposed in the light source frame 3, a reflective mirror 41 or a reflective coating 42 is disposed on an inner wall of the light source frame 3, one end of the light guide optical fiber 6 is disposed on one side of the optical lens group 5, the other end of the light guide optical fiber is inserted into an optical lens of the endoscope, light emitted by the LED module 2 is reflected into the optical lens group 5 via the reflective mirror 4 or the reflective coating, and then the light is transmitted into the light guide optical fiber 6 via the optical lens group 5.

As shown in fig. 1, in order to facilitate the rapid positioning and installation of the light source frame 3 and improve the assembly efficiency, a cavity 11 is formed in the handle housing 1, the light source frame 3 is disposed in the cavity 11, one end of the light guide fiber 6 is fixed on the handle housing 1, and the end of the end extends into the light source frame 3 and is arranged opposite to the optical lens group 5.

As shown in fig. 2 and 3, in order to make the structure more reasonable and reduce the light flux lost by diffuse reflection, thereby increasing the utilization rate of light, the light source frame 3 is a U-shaped frame.

As shown in fig. 1, in order to prevent the image sensor from affecting the working stability due to heat generated by the LED module and prolong the service life of the image sensor, an image sensor 7 (CMOS) and a thermal insulation layer 8 are disposed in the handle housing 1, and the thermal insulation layer 8 is disposed between the image sensor 7 and the light source frame 3. Because the handle is peeped in the handle still includes the button among the endoscope system, handle preliminary treatment FPGA chip, pcb board and video long line output unit, in order to prevent that the heat that the light source produced from transmitting for handle preliminary treatment FPGA chip and optical assembly (image sensor 7), influence the normal operating of chip and optical assembly, through set up the insulating layer between sensor and light source cavity to can insulate off the heat well, play the effect of protection chip and CMOS.

Further, in order to improve the heat insulation effect, the heat insulation layer 8 is made of asbestos or glass fiber.

As shown in fig. 2, in order to facilitate light energy generated by the LED to converge, the optical lens assembly 5 is more excellent in eliminating chromatic aberration, the optical lens assembly 5 is formed by bonding a double convex lens 51 and a meniscus lens 52 into a whole through an ultraviolet photosensitive adhesive, one side surface of the double convex lens 51 is combined with a concave surface of the meniscus lens 52 into a whole, the other side surface of the double convex lens 51 is disposed opposite to the LED module 2, and a convex surface of the meniscus lens 52 is disposed opposite to the light guide fiber 6.

Of course, the structure of the optical lens assembly of the present invention is not limited to this, and as shown in fig. 3, the optical lens assembly 5 may also be an aspheric condensing lens 53, and two side surfaces of the aspheric condensing lens 53 are respectively disposed opposite to the LED module 2 and the light guide fiber 6.

Further, in order to ensure that the heat dissipation effect of the handle is good, the handle housing 1 is a heat dissipation housing made of aluminum alloy or a heat dissipation housing made of stainless steel. After the host computer circular telegram of endoscope, the heat transmission that LED module 2 produced arrives on light source frame 3's the inner wall, because the handle is the heat dissipation casing, is made by aluminium alloy material or stainless steel that have good heat dispersion, works as light source frame 3 and the inner wall direct contact of handle casing can discharge the heat well because the good heat conductivility of metal finished piece to reach the purpose that reduces handle inner chamber temperature, provide the guarantee for endoscope camera system's steady operation.

Certainly, work as LED module 2 produces the heat, and light source frame 3 can dispel the heat to it for the first time, light source frame 3 is the light source frame that aluminum alloy or stainless steel made, and light source frame 3 is through the fix with screw on handle casing 1, and like this, the heat that LED module 2 produced can implement twice heat dissipation through light source frame and handle casing 1, further improves the radiating effect.

The reflector 4 is an acrylic reflector or a stainless steel reflector.

Alternatively, the light reflecting coating is a silver coating or a chromium coating.

The light that LED module 2 produced transmits through direct projection and reflection through reflector 41 or reflective coating 42 5 one side is organized to the optics, optics group 5 assembles the most intensive point of formation LED light after carrying out multiple optical action with the LED light of incident, arranges LED light in the center of leaded light optic fibre incident surface and assembles the most intensive point department, wherein LED module 2 and optics group 5 are arranged in proper order and are located in the light source frame 3, and they all with leaded light optic fibre income light point on same axis, leaded light optic fibre conveys LED light to the optical lens of endoscope in the end then illuminates the inspection site to provide reliable light source for endoscopic surgery's application scene. Wherein, the LED module selects a cold light source with power more than 5 watts to ensure that enough luminous flux can be provided for the endoscopic surgery.

Because the utility model discloses place the handle of endoscope in the lighting mechanism in, replaced external lighting device's among the prior art structural scheme, not only reduced because the luminous flux of diffuse reflection loss to increase the utilization ratio of light, reduced the length of optic fibre moreover greatly, the cost is reduced, and the illuminating effect has also obtained great improvement.

Compared with the prior art, the utility model, following advantage and effect have: firstly, the structure design is reasonable, the cost is saved by the built-in LED light source, the brightness is higher when the LED lamps with the same power are used, the light source frame 3 is fixed in the handle shell by the bolts, and the replacement is convenient when the LED assembly is abnormal; secondly, reflectors are reasonably arranged or a reflective coating is utilized, so that the utilization rate of light is improved, and an LED module with low power can be selected; and thirdly, the heat dissipation effect is achieved by contacting the inner side surface of the aluminum alloy handle in a limited handle space, so that the service life of the LED lamp is prolonged, devices such as a fan do not need to be arranged, and the purpose of saving cost is achieved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An illumination mechanism for a portable endoscope, comprising: including handle casing (1), LED module (2), light source frame (3), optical lens group (5) and leaded light optic fibre (6) to box-like structure, establish in handle casing (1) light source frame (3), LED module (2) and optical lens group (5) are all established in light source frame (3), be equipped with reflector (4) or reflective coating on the inner wall of light source frame (3), the one end of leaded light optic fibre (6) is located one side of optical lens group (5), and the other end inserts in the optical lens of endoscope, the light that LED module (2) sent gets into optical lens group (5) through reflector (4) or reflective coating reflection, passes through again after that optical lens group (5) are with optical transmission to leaded light optic fibre (6).

2. The illumination mechanism of a portable endoscope according to claim 1, characterized in that: the novel optical fiber handle is characterized in that a cavity (11) is formed in the handle shell (1), the light source frame (3) is arranged in the cavity (11), one end of the light guide optical fiber (6) is fixed on the handle shell (1), and the end part of the end extends into the light source frame (3) and is arranged opposite to the optical lens group (5).

3. The illumination mechanism of a portable endoscope according to claim 1 or 2, characterized in that: the light source frame (3) is a U-shaped frame.

4. The illumination mechanism of a portable endoscope according to claim 1, characterized in that: an image sensor (7) and a heat insulation layer (8) are arranged in the handle shell (1), and the heat insulation layer (8) is located between the image sensor (7) and the light source frame (3).

5. The illumination mechanism of a portable endoscope according to claim 4, characterized in that: the heat insulation layer (8) is made of asbestos or glass fiber.

6. The illumination mechanism of a portable endoscope according to claim 1, characterized in that: optical lens group (5) are glued as an organic wholely through ultraviolet photosensitive glue by biconvex lens (51) and meniscus lens (52), a side of biconvex lens (51) combines as an organic wholely with the concave surface of meniscus lens (52), the another side and LED module (2) mutual disposition of biconvex lens (51), the convex surface and leaded light optic fibre (6) mutual disposition of meniscus lens (52).

7. The illumination mechanism of a portable endoscope according to claim 1, characterized in that: the optical lens group (5) is an aspheric condenser lens (53), and two side faces of the aspheric condenser lens (53) are respectively arranged opposite to the LED module (2) and the light guide optical fiber (6).

8. The illumination mechanism of a portable endoscope according to claim 1, characterized in that: the handle shell (1) is a heat dissipation shell made of aluminum alloy or made of stainless steel.

9. The illumination mechanism of a portable endoscope according to claim 1, characterized in that: the reflector (4) is an acrylic reflector or a stainless steel reflector.

10. The illumination mechanism of a portable endoscope according to claim 1, characterized in that: the light reflecting coating is a silver coating or a chromium coating.