CN102743147A - Tool shaft for medical electronic endoscope and medical electronic endoscope - Google Patents
Tool shaft for medical electronic endoscope and medical electronic endoscope Download PDFInfo
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- CN102743147A CN102743147A CN2012102589666A CN201210258966A CN102743147A CN 102743147 A CN102743147 A CN 102743147A CN 2012102589666 A CN2012102589666 A CN 2012102589666A CN 201210258966 A CN201210258966 A CN 201210258966A CN 102743147 A CN102743147 A CN 102743147A
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- 238000003384 imaging method Methods 0.000 claims abstract description 90
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000005286 illumination Methods 0.000 claims description 18
- 239000013307 optical fiber Substances 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 210000001835 viscera Anatomy 0.000 description 2
- 238000001467 acupuncture Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
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- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a tool shaft for a medical electronic endoscope. The tool shaft comprises an imaging sensor which is arranged on the front end part of the tool shaft. The tool shaft comprises a body and the imaging sensor, wherein the imaging sensor is arranged on one side close to the far end of the body in the body; a photosensitive surface of the imaging sensor is parallel to the axis of the body and faces towards the exterior of the body; and the peripheral surface of the body is provided with a light transmitting optical window at the position corresponding to the photosensitive surface of the imaging sensor. According to the tool shaft for the medical electronic endoscope, the size of a wound caused by a tool is greatly reduced, and images of higher sizes can be acquired at one time. The invention also provides the medical electronic endoscope.
Description
Technical Field
The present invention relates to the field of medical devices. In particular to a tool shaft for a medical electronic endoscope, and the invention also relates to the medical electronic endoscope using the tool shaft.
Background
The medical electronic endoscope is a medical electronic optical instrument which can be inserted into the internal cavities of human tissues and organs to directly observe, diagnose and treat. The tissue morphology of human tissues and internal organs can be directly observed through the device, and the diagnosis accuracy is improved.
The main structure of the electronic endoscope comprises an image pickup device, an illuminating device, a signal transmission cable, a video processing system, an output system and the like which are arranged at the distal end part of a tool shaft (wherein the tool shaft is a part of the electronic endoscope which is inserted into the front end part of a human tissue or an internal organ cavity and is used for bearing the image pickup device and the illuminating device). The front end of the camera device is composed of an imaging sensor and a processing circuit thereof. The imaging sensor is disposed at the front end of the tool shaft of the cylindrical body or the body similar to the cylindrical body (i.e., the end of the tool shaft inserted into the human body, also referred to as the distal end, and the end opposite to the distal end, referred to as the proximal end), and the imaging surface of the imaging sensor is perpendicular to the end surface of the tool shaft and faces outward. The imaging sensor may be a Charge Coupled Device (CCD) or a metal oxide semiconductor (CMOS) image sensor.
When the device works, the illumination device (cold light source illumination device) is used for illuminating a part to be detected, an illuminated object is imaged on the photosensitive surface through the imaging sensor, the imaging sensor converts an optical signal into an electric signal, the electric signal is transmitted to the video processor through the cable, and the electric signal is displayed on a monitor screen after being processed and restored.
It can be seen that the electronic endoscope is different from the conventional optical endoscope that images and transmits images using optical fibers. The electronic endoscope is imaged by an imaging sensor mounted at the distal end of the endoscope. Due to advances in semiconductor manufacturing technology today, the pixels of the light-sensitive surface of an imaging sensor can be made small. The resolution of the electronic endoscope is greatly improved relative to the optical endoscope on the same-size imaging surface. This means that the electronic endoscope tool shaft radial dimension can be made small.
The small radial size can reduce the pain of the patient and shorten the recovery time of the operation. The radial size of the current electronic endoscope (and optical endoscope) is generally several millimeters, and the size of the traditional Chinese medicine acupuncture needle is expected to be less than 1 millimeter. The reduction in the radial size of the endoscope means a smaller imaging surface, which results in failure to acquire sufficient examined information at a time, causing inconvenience in medical diagnosis. How to not only reduce the axial radial dimension of the tool and reduce the pain of a patient, but also image a larger area and acquire an image satisfying medical diagnosis is a problem which researchers have to face.
Disclosure of Invention
The invention provides a medical electronic endoscope, which solves the problems of the conventional electronic endoscope.
The invention provides a tool shaft for a medical electronic endoscope, which comprises an imaging sensor arranged at the front end part of the tool shaft, a main body and an imaging sensor, wherein the imaging sensor comprises a main body and a plurality of first connecting rods; wherein,
the imaging sensor is arranged on one side of the body close to the far end of the body, and the photosensitive surface of the imaging sensor is parallel to the axis of the body and faces the outer side of the body; and a light-transmitting optical window is arranged on the peripheral surface of the body corresponding to the position of the photosensitive surface of the imaging sensor.
Optionally, the photosensitive surface of the imaging sensor is rectangular, and the number of pixels of the photosensitive surface along the axial direction of the body is greater than the number of pixels perpendicular to the axial direction of the body.
Optionally, the short side of the light-sensitive surface of the imaging sensor perpendicularly intersects the axis of the body.
Optionally, the imaging device further comprises an illumination device, and the illumination device is integrally arranged on the periphery of the imaging sensor.
Optionally, the imaging device further comprises an illuminating device, and the illuminating device is arranged on the long side and/or the short side of the photosensitive surface of the imaging sensor and is separately arranged from the imaging sensor.
Optionally, the lighting device is a light emitting diode.
Optionally, the light emitting diode is a monochromatic light emitting diode or a white light emitting diode.
Optionally, the illumination device is a conducting optical fiber.
Optionally, the imaging sensor further comprises a processing circuit, which is disposed inside the body and on a side of the back of the photosensitive surface or on a side of the imaging sensor away from the distal end along the axial direction of the body.
Optionally, an imaging lens or a lens group is further included between the optical window and the photosensitive surface of the imaging sensor.
Optionally, the imaging sensor is a charge coupled device or a metal oxide semiconductor image sensor.
Optionally, the front end of the body is gradually reduced in size in the direction close to the end, and the edge is rounded.
Optionally, a protective layer is disposed on the outer side of the body.
The invention also provides a medical electronic endoscope which uses any one of the tool shafts.
Optionally, the system further comprises a tool shaft rotating device and an image splicing device;
wherein the tool shaft rotating device is used for controlling the tool shaft to rotate along the axis;
the image splicing device is used for splicing the images acquired by the tool shaft at different rotation angles sequentially from head to tail.
In one aspect of the invention, the photosurface of the imaging sensor is parallel to the axis of the tool shaft; and the photosensitive surface faces the outer side of the tool shaft, namely the peripheral surface direction of the tool shaft; because the axial size of the tool shaft is larger, the imaging sensor has a larger space in the direction to arrange a photosensitive surface, so that more pixels can be arranged along the axial direction of the tool shaft; the photosensitive surface of the imaging sensor can be made into a strip shape, so that the imaging range is enlarged, and the radial size of the tool shaft does not need to be enlarged, so that discomfort or pain of a user can not be increased; in addition, the short-side direction pixel deficiency can be compensated in a mode of rotating the tool shaft, so that the effective imaging surface is greatly increased, and the method is favorable for acquiring larger-size imaging at one time.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a tool shaft for a medical electronic endoscope according to the present invention.
FIG. 2 is a schematic view of a processing circuit disposed on a side of an imaging sensor away from a distal end of a tool shaft according to another embodiment of the tool shaft for a medical electronic endoscope;
FIGS. 3, 4 and 5 are schematic structural views II, III and IV, respectively, of an embodiment of a tool shaft for a medical electronic endoscope of the present invention;
FIG. 6 is a schematic view of an illumination device provided independently of an imaging sensor in another embodiment of a tool shaft for a medical electronic endoscope according to the present invention;
fig. 7 and 8 are one and two schematic views, respectively, of an imaging sensor photosurface disposed on the tool shaft axis for another embodiment of a tool shaft for a medical electronic endoscope.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather construed as limited to the embodiments set forth herein.
The electronic endoscope includes an imaging device provided at the distal end of a tool shaft, an illumination device, a transmission cable for transmitting a captured image signal, a processing device for restoring the image signal, and an output device such as a monitor and a printer for displaying an image. In the present invention, the front end image pickup device and the illumination device of the electronic endoscope are improved, and only the image pickup device and the illumination device will be described in detail in the following detailed description. The rest of the components can be any existing components for forming the electronic endoscope, and are not listed and described.
Fig. 1 is a schematic structural view of an embodiment of a tool shaft for a medical electronic endoscope according to the present invention. Fig. 3, 4 and 5 are schematic structural views two, three and four of the tool shaft embodiment for medical electronic endoscope of the present invention, respectively.
Referring to fig. 1, in the present embodiment, a tool shaft for a medical electronic endoscope includes a main body 1 and an imaging sensor 1-1, and the tool shaft main body 1 has a cylindrical shape or a shape similar to a cylindrical shape. It should be at least cylindrical and have a continuous smooth outer peripheral surface. In this embodiment, a cylindrical body will be described as an example.
The imaging sensor 1-1 is arranged in the body 1 and close to one side of the far end of the body 1. The imaging sensor 1-1 may be a charge coupled device or a metal oxide semiconductor (CMOS) image sensor, or any other device capable of collecting optical signals and converting the optical signals into electrical signals. The light-sensitive surface of the imaging sensor 1-1 is parallel to the axis of the tool shaft body 1. And the photosensitive surface faces the outer side of the tool shaft body 1, namely the peripheral surface direction of the tool shaft body. An optical window 1-4 is provided on the outer peripheral surface of the tool shaft body 1 at a position corresponding to the photosensitive surface of the imaging sensor 1-1, so that light can enter the tool shaft body through the optical window 1-4 and irradiate onto the photosensitive surface.
In this embodiment, the photosensitive surface of the imaging sensor 1-1 is rectangular, the long side of the photosensitive surface is parallel to the axis of the tool shaft body 1, and the short side of the photosensitive surface is perpendicular to the axis of the tool shaft body. Since the tool shaft body has a large axial dimension, the imaging sensor 1-1 has a larger space in the direction in which the photosurface is arranged, so that more pixels can be arranged in the direction of the axis of the tool shaft body. The photosensitive surface of the imaging sensor can be made into a strip shape, so that the imaging range is enlarged, and the discomfort or pain of a user is not increased. And to the broadside direction of photosurface, can be not being greater than instrument axle body radial dimension within range rational arrangement, moreover, can also compensate the minor face direction pixel not enough through the mode of rotatory instrument axle to make effective imaging greatly increased, and the wound size greatly reduced that causes is favorable to once only obtaining bigger size's formation of image. For example, as shown in fig. 7 and 8, the photosensitive surface of the imaging sensor has been placed on the tool axis with the broadside dimensions up to the maximum dimension that the tool axis can accommodate.
Referring to fig. 1, in the present embodiment, an imaging lens or an imaging lens group 1-2 is further disposed in the tool shaft body 1 and between the optical window 1-4 and the imaging sensor 1-1, and is used for imaging an object to be detected on the photosensitive surface. The structure of the imaging lens or imaging lens group 1-2 can refer to the design of the imaging lens when the existing imaging sensor is disposed at the distal end, and those skilled in the art can easily design the imaging lens or lens group meeting the application of the present embodiment under the teaching of the present invention, and will not be described herein again.
In this embodiment, an illumination device is further disposed in the tool spindle body 1 for illuminating an object to be detected when an image is captured, wherein the illumination devices 1-6 are disposed in a manner as shown in fig. 3, 4 or 5, and may be integrally disposed on a long side or a short side of the imaging sensor, or disposed around the imaging sensor, or disposed on a single side or disposed on a long side and a short side. The illumination device may be a Light Emitting Diode (LED), including a monochromatic LED or a white LED, among others.
In other embodiments, the illumination device may be disposed inside the tool shaft body 1 independently of the imaging sensor, as shown in fig. 6, the illumination device is disposed on the long side of the imaging sensor, and of course, it may be disposed on the short side, when the illumination device 1-6 is disposed separately from the imaging sensor, the illumination device 1-6 may be a light emitting diode, or may be a conducting optical fiber, the light emitting end of the conducting optical fiber is disposed on the periphery (including one side, two sides, or four sides) of the imaging sensor, the conducting optical fiber extends to the outside of the body in the same manner as the cable, and the light entering portion thereof is connected to the illumination light source. And will not be discussed further herein.
With reference to fig. 1, in this embodiment, the tool shaft body 1 may be configured to gradually decrease in size in the direction from the distal end to the proximal end, and the edge may be rounded, which may reduce the resistance when the electronic endoscope is inserted into the human body for detection, and alleviate the pain of the user. Other structures, such as flow channels, etc., may also be provided at the distal end, and are not described in detail herein.
In the embodiment of the present invention, the present invention further comprises a processing circuit 1-3, for processing the signal converted by the photosensitive surface of the imaging sensor, which can be disposed inside the tool shaft and on one side of the back of the photosensitive surface in the manner shown in fig. 1; it may also be disposed along the tool shaft axis on the side of the imaging sensor distal from the distal end in the manner shown in fig. 2. Due to the position arrangement of the imaging sensor in the embodiment of the invention, the arrangement of the processing circuits 1-3 has more flexibility, and the requirement for size reduction is greatly reduced, so that the arrangement is easier.
Since the tool shaft body 1 of the medical electronic endoscope is required to extend into the human body and is difficult to be protected from the corrosion of body fluid, a protective layer 1a is further arranged on the outer surface of the tool shaft body to protect the imaging sensor inside the tool shaft body from being corroded by secretions, mucus, water and the like.
The tool shaft is applied to the medical electronic endoscope, and the size of an image acquired by the tool shaft in the axial direction can be obviously improved. For a smaller or insufficient number of radial pixels, this can be compensated by rotating the tool shaft. Thus, the medical electronic endoscope may comprise rotation means for controlling the tool shaft to rotate along the axis, which may be continuous or stepwise in steps. The images collected by different angles of the tool shaft after rotation can be sequentially spliced end to end through the image splicing device to form a complete image. When the tool shaft continuously rotates, sampling can be carried out according to a certain frequency, the image splicing device can determine the sampling frequency according to the size of the photosensitive surface and the rotating angle, pictures collected at different times are subjected to identification of the tail end of the previous picture and the top end of the next picture, and if the same parts exist, the same parts are overlapped, so that the two pictures are spliced. When the tool shaft rotates in a stepping mode, the stepping step length needs to be determined according to the size and the rotating angle of the photosensitive surface, and the pictures obtained each time are spliced according to the mode, so that the complete picture can be obtained.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto, and variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (15)
1. The utility model provides a instrument axle for medical electronic endoscope, is including setting up in the imaging sensor of instrument axle front end portion which characterized in that: comprises a body and an imaging sensor; wherein,
the imaging sensor is arranged on one side of the body close to the far end of the body, and the photosensitive surface of the imaging sensor is parallel to the axis of the body and faces the outer side of the body; and a light-transmitting optical window is arranged on the peripheral surface of the body corresponding to the position of the photosensitive surface of the imaging sensor.
2. A tool shaft for a medical electronic endoscope according to claim 1 and characterized in that: the photosensitive surface of the imaging sensor is rectangular, and the number of pixels of the imaging sensor along the axial direction of the body is larger than that of pixels perpendicular to the axial line of the body.
3. A tool shaft for a medical electronic endoscope according to claim 2 and characterized in that: the short side of the light-sensitive surface of the imaging sensor is perpendicularly intersected with the axis of the body.
4. A tool shaft for a medical electronic endoscope according to claim 1 and characterized in that: still include lighting device, lighting device is integrative to be set up in imaging sensor periphery.
5. A tool shaft for a medical electronic endoscope according to claim 2 and characterized in that: the lighting device is arranged on the long side and/or the short side of the photosensitive surface of the imaging sensor and is separately arranged with the imaging sensor.
6. A tool shaft for a medical electronic endoscope according to claim 4 or 5, characterized in that: the lighting device is a light emitting diode.
7. A tool shaft for a medical electronic endoscope according to claim 6 and characterized in that: the light emitting diode is a monochromatic light emitting diode or a white light emitting diode.
8. The tool shaft for a medical electronic endoscope according to claim 5, characterized in that: the illumination device is a conducting optical fiber.
9. A tool shaft for a medical electronic endoscope according to claim 1 and characterized in that: the imaging sensor is characterized by further comprising a processing circuit which is arranged in the body and on one side of the back surface of the photosensitive surface or on one side of the imaging sensor far away from the far end along the axial direction of the body.
10. A tool shaft for a medical electronic endoscope according to claim 1 and characterized in that: an imaging lens or lens group is also included between the optical window and the imaging sensor photosurface.
11. A tool shaft for a medical electronic endoscope according to claim 1 or 2 or 3 or 4 or 5 or 8 or 9 or 10 characterized in that: the imaging sensor is a charge coupled device or a metal oxide semiconductor image sensor.
12. A tool shaft for a medical electronic endoscope according to claim 1 or 2 or 3 or 4 or 5 or 8 or 9 or 10 characterized in that: the size of the front end of the body is gradually reduced along the direction close to the end part, and the edge of the front end of the body is rounded.
13. A tool shaft for a medical electronic endoscope according to claim 1 or 2 or 3 or 4 or 5 or 8 or 9 or 10 characterized in that: and a protective layer is arranged on the outer side of the body.
14. An electronic endoscope for medical use, characterized by using the tool shaft according to any one of claims 1 to 13.
15. The medical electronic endoscope of claim 14, further comprising a tool shaft rotation device and an image stitching device;
wherein the tool shaft rotating device is used for controlling the tool shaft to rotate along the axis;
the image splicing device is used for splicing the images acquired by the tool shaft at different rotation angles sequentially from head to tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102589666A CN102743147A (en) | 2012-07-24 | 2012-07-24 | Tool shaft for medical electronic endoscope and medical electronic endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102589666A CN102743147A (en) | 2012-07-24 | 2012-07-24 | Tool shaft for medical electronic endoscope and medical electronic endoscope |
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| Publication Number | Publication Date |
|---|---|
| CN102743147A true CN102743147A (en) | 2012-10-24 |
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|---|---|---|---|
| CN2012102589666A Pending CN102743147A (en) | 2012-07-24 | 2012-07-24 | Tool shaft for medical electronic endoscope and medical electronic endoscope |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126518A (en) * | 1984-11-26 | 1986-06-14 | Olympus Optical Co Ltd | Endoscope device |
| US5253638A (en) * | 1992-03-25 | 1993-10-19 | Welch Allyn, Inc. | Right-angle detachable variable-position reflector assembly |
| JP2004008638A (en) * | 2002-06-10 | 2004-01-15 | Olympus Corp | Endoscope |
| CN100500093C (en) * | 2003-01-14 | 2009-06-17 | 株式会社森田制作所 | diagnostic camera |
| JP2009297421A (en) * | 2008-06-17 | 2009-12-24 | Fujinon Corp | Endoscope |
| CN101716077A (en) * | 2009-12-03 | 2010-06-02 | 西交利物浦大学 | Method and system for processing images based on photographing in vivo by wireless capsule endoscopy or video endoscope |
| WO2011143269A1 (en) * | 2010-05-10 | 2011-11-17 | Nanamed, Llc | Method and endoscopic device for examining or imaging an interior surface of a corporeal cavity |
-
2012
- 2012-07-24 CN CN2012102589666A patent/CN102743147A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126518A (en) * | 1984-11-26 | 1986-06-14 | Olympus Optical Co Ltd | Endoscope device |
| US5253638A (en) * | 1992-03-25 | 1993-10-19 | Welch Allyn, Inc. | Right-angle detachable variable-position reflector assembly |
| JP2004008638A (en) * | 2002-06-10 | 2004-01-15 | Olympus Corp | Endoscope |
| CN100500093C (en) * | 2003-01-14 | 2009-06-17 | 株式会社森田制作所 | diagnostic camera |
| JP2009297421A (en) * | 2008-06-17 | 2009-12-24 | Fujinon Corp | Endoscope |
| CN101716077A (en) * | 2009-12-03 | 2010-06-02 | 西交利物浦大学 | Method and system for processing images based on photographing in vivo by wireless capsule endoscopy or video endoscope |
| WO2011143269A1 (en) * | 2010-05-10 | 2011-11-17 | Nanamed, Llc | Method and endoscopic device for examining or imaging an interior surface of a corporeal cavity |
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Application publication date: 20121024 |