CN119055162B - Front end assembly, insertion portion and endoscope - Google Patents
Front end assembly, insertion portion and endoscope Download PDFInfo
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- CN119055162B CN119055162B CN202411541772.6A CN202411541772A CN119055162B CN 119055162 B CN119055162 B CN 119055162B CN 202411541772 A CN202411541772 A CN 202411541772A CN 119055162 B CN119055162 B CN 119055162B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00066—Proximal part of endoscope body, e.g. handles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00131—Accessories for endoscopes
- A61B1/00133—Drive units for endoscopic tools inserted through or with the endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/273—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
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- Endoscopes (AREA)
Abstract
本发明涉及内窥镜技术领域，并具体公开了一种前端组件、插入部及内窥镜，前端组件包括镜头座、摄像模组、分光件、遮光件和驱动机构，镜头座具有第一视窗和第二视窗，第一视窗朝向镜头座的远端，第二视窗朝向镜头座的侧方，摄像模组和分光件设于镜头座内，且分光件分布在摄像模组的远端，经第一视窗或第二视窗进入镜头座内的光线经分光件传导至摄像模组，遮光件活动设于镜头座，驱动机构与遮光件相连，以驱动遮光件活动以遮挡第一视窗和第二视窗中的一者；上述方案中，通过驱动机构驱动遮光件遮挡第一视窗或第二视窗，能够使光线从远端或侧面进入镜头座内并被传导至摄像模组，从而实现内窥镜向前方看或向侧方看，降低内窥镜的置入难度。
The present invention relates to the technical field of endoscopes, and specifically discloses a front end component, an insertion part and an endoscope, wherein the front end component comprises a lens seat, a camera module, a spectrometer, a shading member and a driving mechanism, wherein the lens seat has a first window and a second window, wherein the first window faces the distal end of the lens seat, and the second window faces the side of the lens seat, the camera module and the spectrometer are arranged in the lens seat, and the spectrometer is distributed at the distal end of the camera module, and the light entering the lens seat through the first window or the second window is transmitted to the camera module through the spectrometer, the shading member is movably arranged in the lens seat, and the driving mechanism is connected to the shading member to drive the shading member to move to block one of the first window and the second window; in the above scheme, the shading member is driven by the driving mechanism to block the first window or the second window, so that light can enter the lens seat from the distal end or the side and be transmitted to the camera module, thereby enabling the endoscope to look forward or sideways, thereby reducing the difficulty of inserting the endoscope.
Description
Technical Field
The invention relates to the technical field of endoscopes, in particular to a front end assembly, an insertion part and an endoscope.
Background
The endoscope is a medical instrument which stretches the insertion part into the human body, and observes the internal tissues of the human body through the camera module at the distal end of the insertion part, so that doctors can be helped to judge the pathological change position and the tissue structure characteristics of the pathological change position in the patient. The endoscope comprises an operating handle and an inserting part, and in actual operation, the pulling wheel is driven to rotate by pulling the pulling rod on the operating handle so as to adjust the posture of the active bending section of the inserting part, thereby adjusting the orientation of the far-end module and realizing the functions of fixed point observation and the like.
There are duodenums in the related art that are specifically used for examination and treatment of the duodenum and its associated areas (e.g., biliary tract and pancreas), and most are side view mirror designs to better access and view the duodenum and its adjacent biliary tract and pancreas openings. However, due to the design of the side view mirror based on the duodenoscope, in the process that the duodenoscope is inserted into the cavity of the human body, operators are difficult to observe the front part of the cavity, so that the duodenoscope is difficult to insert and has low insertion efficiency, and the inner wall of the cavity of the human body is easily damaged.
Disclosure of Invention
The invention discloses a front end component, an insertion part and an endoscope, which are used for solving the technical problems in the related art.
In order to solve the problems, the invention adopts the following technical scheme:
In a first aspect, the application provides a front end assembly for an endoscope, the front end assembly comprising a lens mount, a camera module, a beam splitter, a light shield and a driving mechanism, wherein:
The lens seat is provided with a first window and a second window, the first window faces the far end of the lens seat, and the second window faces the side of the lens seat;
the camera shooting module and the light splitting piece are arranged in the lens seat, the light splitting piece is distributed at the far end of the camera shooting module, and light entering the lens seat through the first window or the second window is conducted to the camera shooting module through the light splitting piece;
The light shielding piece is movably arranged on the lens seat, and the driving mechanism is connected with the light shielding piece to drive the light shielding piece to move so as to shield one of the first window and the second window.
Further, the driving mechanism comprises a sliding block and a driving piece connected with the sliding block, the lens seat is provided with a first guide groove extending along the axial direction of the first guide groove, the shading piece is provided with a spiral guide groove extending along the axial direction of the shading piece, the sliding block is in sliding fit with the first guide groove and the spiral guide groove, and the driving piece is configured to drive the sliding block to move along the first guide groove, so that the shading piece is in rotating fit with the lens seat.
Further, the driving mechanism further comprises an elastic piece, wherein the elastic piece is arranged in the lens seat and is configured to apply elastic acting force to the sliding block so that the first window is shielded by the shading piece.
Further, the shading piece comprises an annular base body and a covering part connected with the annular base body, the covering part is located at the far end of the annular base body and used for covering the first window, and the annular base body is used for covering the second window. The shading piece is provided with an opening area penetrating through the annular base body and the covering part, and the light can penetrate through the first window or the second window to enter the lens seat through the opening area.
Further, one of the lens mount and the cover portion is provided with a positioning shaft, and the other is provided with a positioning recess in which the positioning shaft is rotatably fitted.
Further, a gap is provided between the distal end face of the lens holder and the inner wall face of the cover portion.
Further, the front end assembly further comprises an adapter, wherein the adapter is rotatably arranged in the lens holder and used for accommodating the distal end portion of the instrument tube so as to adjust the orientation of the distal end portion of the instrument tube.
Further, the front end assembly further comprises a guide assembly, and the guide assembly is connected with the adapter to drive the adapter to rotate. The guide assembly comprises a guide tube and a traction piece, wherein the distal end of the guide tube is bent and arranged to face the outer edge of the adapter piece, the traction piece penetrates through the guide tube and is connected with the outer edge of the adapter piece, and the adapter piece is provided with a containing groove for containing the traction piece.
In a second aspect, the present application also provides an insert comprising the front end assembly described above.
In a third aspect, the application also provides an endoscope comprising the insertion section described above.
The technical scheme adopted by the invention can achieve the following beneficial effects:
According to the front end assembly, the insertion part and the endoscope, the driving mechanism drives the shading piece to move relative to the lens seat, so that the camera shooting module can be switched between acquiring the distal end image information of the lens seat and acquiring the lateral image information of the lens seat, in the process of the endoscope penetrating into a human body cavity, the driving mechanism can be controlled to act, so that the camera shooting module can acquire the distal end image information of the lens seat, an operator can clearly see a front tissue structure and possibly existing obstacles in the process of the endoscope, the operator can conveniently and accurately judge the path and the position of the endoscope entering into the body, the operator can be helped to accurately guide the endoscope to a target area, and meanwhile, collision or friction with surrounding tissues can be avoided based on the visualization of the endoscope penetrating path, so that the risk of damage is reduced.
After the distal end of the endoscope reaches a target area, such as the duodenum and related parts, the driving mechanism can be controlled to act so that the camera module can acquire image information on the side of the lens seat, and the camera module can observe the duodenal papilla and bile duct and pancreatic duct openings around the duodenal papilla through the second window, so that a visual field blind area possibly existing in the right angle lens is avoided. That is, the front end assembly according to the embodiment of the application controls the action of the light shielding member, so that the same camera module can realize forward looking observation to facilitate the operation of placing the endoscope, and can also realize side looking observation of the duodenum and related parts, thereby improving the diagnosis judgment.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a front end assembly according to an embodiment of the present application;
FIG. 2 is a schematic view of a lens mount according to an embodiment of the present application;
FIG. 3 is a schematic view of a light shielding member according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating an assembly of a driving mechanism and a lens holder according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a driving mechanism according to an embodiment of the present application;
FIG. 6 is a second schematic diagram of a driving mechanism according to an embodiment of the present application;
FIG. 7 is a schematic diagram illustrating the distribution of the beam splitter, the camera module and the adapter inside the lens holder according to an embodiment of the present application;
FIG. 8 is a schematic diagram illustrating a distribution of light splitting elements inside a lens holder according to an embodiment of the present application;
FIG. 9 is a schematic diagram of a spectroscopic assembly according to an embodiment of the present application;
FIG. 10 is a second schematic diagram of a beam splitter according to an embodiment of the application;
FIG. 11 illustrates the assembly of the support, adapter and instrument tube of an embodiment of the present application.
In the figure:
100. The lens comprises a lens seat, 110, a first window, 120, a second window, 130, a first guide groove, 140, a positioning shaft, 150, a side opening, 160, a supporting piece, 170, a limiting piece, 200, a camera module, 300, a light splitting piece, 310, a first light splitting part, 311, a first light splitting surface, 320, a second light splitting part, 321, a second light splitting surface, 400, a shading piece, 410, an annular base body, 411, a spiral guide groove, 420, a covering part, 430, an opening area, 500, a driving mechanism, 510, a sliding block, 520, a driving piece, 530, an elastic piece, 540, a guide wire, 600, a switching piece, 610, a containing groove, 700, an instrument tube, 800, a guiding component, 810, a guiding tube, 811, a bending part, 820 and a traction piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In view of this, the embodiment of the present application provides a front end module, an insertion portion, and an endoscope, and the front end module, the insertion portion, and the endoscope provided by the embodiment of the present application are described in detail below with reference to fig. 1 to 11 by way of specific embodiments and application scenarios thereof.
Referring to fig. 1, 2, 3 and 4, an embodiment of the present application discloses a front end assembly, which is applied to an endoscope, particularly a duodenal endoscope in an endoscope, and specifically includes a lens holder 100, an image capturing module 200, a beam splitter 300, a light shielding member 400 and a driving mechanism 500, wherein the lens holder 100 is a base member of the front end assembly, and is capable of providing an installation and protection foundation for the image capturing module 200, the beam splitter 300, the light shielding member 400 and the driving mechanism 500.
In the embodiment of the application, the lens holder 100 has an accommodating space, the camera module 200 and the beam splitter 300 are disposed in the accommodating space, the beam splitter 300 is disposed at the distal end of the camera module 200, the lens holder 100 is provided with a first window 110 and a second window 120, wherein the first window 110 faces the distal end of the lens holder 100, the second window 120 faces the lateral side of the lens holder 100, light rays located at the distance of the lens holder 100 can enter the lens holder 100 through the first window 110 and be conducted to the camera module 200 after passing through the beam splitter 300, that is, the camera module 200 can acquire image information of the distal end of the lens holder 100 through the first window 110, and light rays located at the lateral side of the lens holder 100 can enter the lens holder 100 through the second window 120 and be conducted to the camera module 200 after passing through the beam splitter 300, that is, the camera module 200 can acquire image information at the lateral side of the lens holder 100 through the second window 120.
In the embodiment of the application, the light shielding member 400 is movably disposed on the lens base 100, and the driving mechanism 500 is connected with the light shielding member 400 to drive the light shielding member 400 to move relative to the lens base 100, so as to shield one of the first window 110 and the second window 120 and make the other one in an exposed state. Specifically, the light shielding member 400 has a first state in which the light shielding member 400 shields the first window 110 on the lens holder 100 and the second window 120 is exposed, and at this time, light in a far direction of the lens holder 100 cannot be obtained by the image capturing module 200 through the first window 110, but only light in a side direction of the lens holder 100 can be obtained by the image capturing module 200, that is, the image capturing module 200 can only obtain image information in a side direction of the lens holder 100 in the first state, and a second state in which the light shielding member 400 shields the second window 120 on the lens holder 100 and the first window 110 is exposed, and at this time, light in a side direction of the lens holder 100 cannot be obtained by the image capturing module 200 through the second window 120, but only light in a far direction of the lens holder 100 can be obtained by the image capturing module 200, that is, the image capturing module 200 can only obtain image information in a far direction of the lens holder 100 in the second state.
Based on the above technical solution, in a specific application of the front end assembly according to the embodiment of the present application, an operator can drive the light shielding member 400 to move relative to the lens holder 100 through the driving mechanism 500, so that the image capturing module 200 can switch between acquiring the distal image information of the lens holder 100 and acquiring the side image information of the lens holder 100. In the process of the endoscope penetrating into the human body cavity, the driving mechanism 500 can be controlled to act so that the camera module 200 can acquire the far-end image information of the lens seat 100, so that operators can clearly see the tissue structure in front and the possible obstacle in the process of placing the endoscope, the operators can conveniently and accurately judge the path and the position of the endoscope entering into the body, the operators can be helped to accurately guide the endoscope to the target area, and meanwhile, based on the visualization of the endoscope penetrating path, the collision or friction between the far end of the endoscope and surrounding tissues can be avoided, so that the risk of damage is reduced.
After the distal end of the endoscope reaches the target area, for example, the duodenum and related parts, the driving mechanism 500 can be controlled to act so that the image pickup module 200 obtains the image information on the side of the lens holder 100, and the image pickup module 200 can observe the duodenal papilla and the bile duct and pancreatic duct openings around the duodenal papilla through the second window 120, so that the operator can observe or operate intuitively. That is, the front end assembly according to the embodiment of the present application controls the light shielding member 400 to act, so that the same camera module 200 can realize both forward looking observation to facilitate the operation of inserting an endoscope and side looking observation of the duodenum and related parts, thereby realizing multiple functions of the camera module 200 and improving the convenience of diagnosis.
In an alternative embodiment of the present application, referring to fig. 2,3 and 4, the light shielding member 400 is rotatably engaged with the lens holder 100 to switch between the first state and the second state. Specifically, the driving mechanism 500 includes a slider 510 and a driving member 520 connected to the slider 510, the lens holder 100 is provided with a first guide groove 130 extending along an axial direction thereof, the light shielding member 400 has a spiral guide groove 411 extending along an axial direction thereof, the slider 510 is slidably fitted in the first guide groove 130 and the spiral guide groove 411, and when the slider 510 moves along the first guide groove 130, the light shielding member 400 can be driven to rotate, so that the light shielding member 400 can be switched between a first state and a second state.
In some embodiments of the present application, referring to fig. 4 and 5, the driving member 520 may be a traction rope, where a distal end of the traction rope is fixedly connected to the slider 510, and the traction rope can pull the slider 510 to slide in the first guide groove 130 when traction force is applied to the traction rope, so as to switch the light shielding member 400 from the first state to the second state.
In a further embodiment, the driving mechanism 500 may further include an elastic member 530, where the elastic member 530 is disposed in the lens holder 100, a distal end of the elastic member 530 abuts against the slider 510, and a proximal end of the elastic member 530 abuts against the limiting member 170 embedded in the proximal end of the first guide slot 130. The elastic member 530 may be a spring, and the elastic member 530 applies an elastic force to the slider 510 to make the slider 510 be in contact with the distal end of the first guide groove 130 when no traction force is applied to the traction rope, and the light shielding member 400 is in a first state of shielding the first window 110 when traction force is applied to the traction rope, and the slider 510 slides in the first guide groove 130 and compresses the elastic member 530 to switch the light shielding member 400 from the first state to the second state.
Based on the above-mentioned scheme, when no driving force is applied to the driving member 520, the light shielding member 400 is under the elastic force of the elastic member 530 and is in the first state, and the driving force needs to be applied to make the light shielding member 400 in the second state during the process of the endoscope penetrating into the body cavity, that is, the elastic member 530 is in the initial state, and the image capturing module 200 is viewed from the side. In this way, after the distal end of the endoscope reaches the target area, the operator can obtain the image information on the side of the lens holder 100 by himself only by removing the driving force applied to the driving member 520, so that the problem of inconvenience in operation, which is caused by the need of the operator to intentionally maintain the side view of the image capturing module 200, is avoided.
In some embodiments of the present application, referring to fig. 6, the driving element 520 may be a tubular member, which has a certain strength and rigidity in the axial direction, the distal end of the tubular member is fixedly connected to the sliding element 510, the distal end of the tubular member may extend to the operation handle at the proximal end of the endoscope, and the sliding of the sliding element 510 in the first guide slot 130 may be achieved by pulling or pushing the tubular member proximally, so as to drive the light shielding element 400 to switch between the first state and the second state. Illustratively, the shutter 400 switches from the first state to the second state when the driver 520 is pulled proximally, and the shutter 400 switches from the second state to the first state when the driver 520 is pushed distally.
In a further technical solution, in the case where the driving element 520 is a tubular member, referring to fig. 6, the driving mechanism 500 may further include a guide wire 540, where a distal end of the guide wire 540 is fixedly connected to the lens holder 100, and illustratively, the distal end of the guide wire 540 may be fixedly connected to the lens holder 100 by gluing, welding, tying, or the like, and a proximal end of the guide wire 540 extends to an operation handle of the proximal end of the endoscope, the tubular member is slidably sleeved on the guide wire 540, and the guide wire 540 can provide a specific sliding path for the tubular member, so that the tubular member is prevented from being bent and deformed by external force interference, and thus the state of the light shielding element 400 cannot be effectively switched.
In some embodiments of the present application, the hauling cable may further include a first hauling segment and a second hauling segment (not shown), wherein the first hauling segment is connected to the proximal end of the slider 510, and the second hauling segment is connected to the distal end of the slider 510 and extends at the operation handle of the bending backward and proximal end, such that pulling the first hauling segment can switch the shade 400 from the first state to the second state, and pulling the second hauling segment can switch the shade 400 from the second state to the first state. In a preferred embodiment, the slider 510 is in a damping sliding fit in the first guide slot 130, so that the light shielding member 400 can be prevented from uncontrollable rotation caused by interference of external human tissues and the like in the human body cavity, so that the light shielding member 400 can be stably maintained in the first state or the second state, and further the camera module 200 can obtain stable image information.
In an embodiment of the present application, referring to fig. 2 and 3, the light shielding member 400 includes an annular base 410 and a covering portion 420 connected to the annular base 410, the covering portion 420 is located at a distal end of the annular base 410, so that the entire light shielding member 400 is in a sleeve-shaped structure, the light shielding member 400 is rotatably sleeved on the lens holder 100, wherein the covering portion 420 is used for covering the first window 110, and the annular base 410 is used for covering the second window 120.
Referring to fig. 7,8, 9 and 10, the light splitting member 300 may include a first light splitting portion 310 and a second light splitting portion 320, where the first light splitting portion 310 and the second light splitting portion 320 are disposed adjacent to each other, so that the entire light splitting member 300 has a columnar structure coaxially disposed with the camera module 200, for example, a quadrangular prism structure, the first light splitting portion 310 has a first light splitting surface 311 disposed obliquely with respect to an axial direction of the camera module 200, the second light splitting portion 320 has a second light splitting surface 321 disposed obliquely with respect to the axial direction of the camera module 200, and the first light splitting surface 311 is adhered to the second light splitting surface 321. Referring to fig. 9, in the case where the second window 120 is blocked by the annular substrate 410, light rays far from the front end component can enter the lens holder 100 through the first window 110, part of the light rays are refracted by the first light splitting surface 311, collimated and transmitted along the axial direction of the camera module 200 and acquired by the camera module 200, so that the camera module 200 observes image information far from the front end component, and the other part of the light rays are reflected by the first light splitting surface 311 and then emitted to the inner wall of the lens holder 100, while referring to fig. 10, in the case where the first window 110 is blocked by the cover portion 420, light rays on the side of the front end component can enter the lens holder 100 through the second window 120, part of the light rays are reflected by the second light splitting surface 321, collimated and transmitted along the axial direction of the camera module 200 and acquired by the camera module 200, so that the camera module 200 observes image information on the side of the front end component, and the other part of the light rays are reflected by the second light splitting surface 321 and emitted to the inner wall of the lens holder 100. It can be understood that the light reflected by the first light splitting surface 311 and directed to the inner wall of the lens holder 100 or the light refracted by the second light splitting surface 321 and directed to the inner wall of the lens holder 100 is the non-used light not received by the image capturing module 200.
In the embodiment of the present application, the first window 110 and the second window 120 may be an opening structure penetrating through the lens holder 100, and of course, the first window 110 and the second window 120 may also be transparent structures embedded on the lens holder 100, for example, the first window 110 and the second window 120 may be lens structures, which can prevent tissue fluid in a human body from entering the lens holder 100 through the first window 110 and/or the second window 120.
In a preferred embodiment of the present application, referring to fig. 4, in the case that the second window 120 has a lens structure, the outer wall surface of the second window 120 may be a convex spherical surface, and the convex spherical surface of the second window 120 can effectively focus light onto the photosensitive element of the image capturing module 200, so as to improve brightness and definition of an image, further improve imaging quality, and facilitate an operator to perform an operation on duodenum.
The light shielding member 400 is provided with an opening area 430 penetrating the annular base 410 and the covering portion 420, when the covering portion 420 covers the first window 110, the second window 120 is opposite to the opening area 430, light on the side of the front end assembly can enter the lens holder 100 through the opening area 430, and when the annular base 410 covers the second window 120, the first window 110 is opposite to the opening area 430, and light on the far side of the front end assembly can enter the lens holder 100 through the opening area 430.
In the embodiment of the present application, one of the lens holder 100 and the cover part 420 is provided with a positioning shaft 140, and the other is provided with a positioning recess (not shown), and the positioning shaft 140 is rotatably fitted in the positioning recess. The positioning shaft 140 is disposed at the distal end of the lens holder 100, the positioning recess is disposed on the inner wall of the cover portion 420, a gap is formed between the distal end surface of the lens holder 100 and the inner wall surface of the cover portion 420, and the positioning shaft 140 is in running fit with the positioning recess, so that on one hand, the stability of the light shielding member 400 in the rotation process can be ensured, the light shielding member 400 is prevented from swinging or shifting relative to the lens holder 100, and thus, the rotation blocking is prevented, on the other hand, the contact area between the light shielding member 400 and the lens holder 100 can be reduced, and the contact area is prevented from being too large to generate larger friction resistance, that is, the design can enable the light shielding member 400 to be smoother in rotation.
In the embodiment of the present application, referring to fig. 4, 7, 8 and 11, the front end assembly further includes an adaptor 600, the adaptor 600 is rotatably disposed in the lens holder 100, the adaptor 600 is used for accommodating a distal end portion of the instrument tube 700, specifically, a side opening 150 is further disposed on the lens holder 100, a portion of the adaptor 600 may protrude through the side opening 150, so that the distal end portion of the instrument tube 700 protrudes from the side, and during a surgical operation, a treatment instrument may protrude from the distal end portion of the instrument tube 700 to perform a surgical operation on a target area, and by adjusting an orientation of the adaptor 600, an orientation of the distal end portion of the instrument tube 700 may be adjusted, so that the treatment instrument may fall within an observation range of the second window 120.
With continued reference to fig. 8 and 11, the lens holder 100 is further provided with a support 160, where the support 160 may be fixed in the accommodating space by means of gluing, the support 160 may provide a mounting base for the adapter 600, the adapter 600 has a rotation axis, and the adapter 600 is rotatably fitted to the support 160 through the rotation axis.
In the embodiment of the present application, referring to fig. 11, the front end assembly further includes a guiding assembly 800, and the guiding assembly 800 is connected to the adaptor 600 to drive the adaptor 600 to rotate. Specifically, the guide assembly 800 includes a guide tube 810 and a traction member 820, wherein the distal end of the guide tube 810 is bent to form a bending portion 811, the bending portion 811 faces the outer edge of the adapter 600, and the traction member 820 is connected to the outer edge of the adapter 600 through the guide tube 810. On the one hand, the traction member 820 is connected to the outer edge of the adaptor 600 based on the guiding action of the guiding tube 810, so that the distance between the joint of the traction member 820 and the adaptor 600 relative to the center of the adaptor 600 is large, that is, the arm of force for applying traction force is large, on the other hand, the direction in which the traction member 820 applies traction force is approximately along the circumferential direction of the adaptor 600, but not along the radial direction of the adaptor 600 based on the guiding action of the bending portion 811, so that the adaptor 600 can overcome resistance force more easily when being pulled by the traction member 820, and smooth rotation of the adaptor 600 is realized.
Meanwhile, based on the protective effect of the guide tube 810, the traction member 820 and the supporting member 160 can be prevented from being scratched and worn, the stability of the traction effect of the traction member 820 is ensured, and based on the pre-bending setting of the bending part 811, the guide tube 810 can limit the adaptor 600 to enable the adaptor 600 to rotate to the limit position.
It will be appreciated that in the embodiment of the present application, where the traction member 820 is one, the guide assembly 800 should further include an elastic restoring member (not shown), which may be a torsion spring and is sleeved on the rotating shaft of the adaptor 600, for example, one end of the elastic restoring member is connected to the supporting member 160, the other end of the elastic restoring member is connected to the adaptor 600, and when the adaptor 600 is pulled to rotate by the traction member 820, the elastic restoring member is elastically deformed and stores elastic potential energy, and an operator can control the traction force applied to the traction member 820 to make the adaptor 600 toward the target position.
The embodiment of the application also discloses an insertion part, which comprises the front end component, wherein the front end component is arranged at the distal end of the insertion part.
The embodiment of the application also discloses an endoscope, which comprises an operating handle and the inserting part, wherein the proximal end of the inserting part is connected with the operating handle.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (9)
1. The front end assembly is applied to an endoscope and is characterized by comprising a lens seat (100), an imaging module (200), a light splitting piece (300), a shading piece (400) and a driving mechanism (500), wherein:
the lens seat (100) is provided with a first window (110) and a second window (120), the first window (110) faces the far end of the lens seat (100), and the second window (120) faces the lateral side of the lens seat (100);
the light shielding piece (400) is rotationally arranged on the lens seat (100), the light shielding piece (400) comprises an annular base body (410) and a covering part (420) connected with the annular base body (410), the covering part (420) is positioned at the far end of the annular base body (410), the covering part (420) is used for covering the first window (110), the annular base body (410) is used for covering the second window (120), an opening area (430) penetrating through the annular base body (410) and the covering part (420) is arranged on the light shielding piece (400), and light can penetrate through the first window (110) or the second window (120) through the opening area (430) to enter the lens seat (100);
the camera module (200) and the light splitting piece (300) are arranged in the lens seat (100), the light splitting piece (300) is distributed at the far end of the camera module (200), and light entering the lens seat (100) through the first window (110) or the second window (120) is conducted to the camera module (200) through the light splitting piece (300);
the driving mechanism (500) is connected with the shading piece (400) to drive the shading piece (400) to rotate so as to shade one of the first window (110) and the second window (120).
2. The front end assembly of claim 1, wherein the driving mechanism (500) comprises a slider (510) and a driving member (520) connected to the slider (510), the lens holder (100) is provided with a first guide groove (130) extending along an axial direction thereof, the light shielding member (400) has a spiral guide groove (411) extending along an axial direction thereof, the slider (510) is slidably fitted in the first guide groove (130) and the spiral guide groove (411), and the driving member (520) is configured to drive the slider (510) to move along the first guide groove (130) so that the light shielding member (400) is rotatably fitted in the lens holder (100).
3. The front end assembly of claim 2, wherein the drive mechanism (500) further comprises an elastic member (530), the elastic member (530) being disposed within the lens mount (100), the elastic member (530) being configured to apply an elastic force to the slider (510) such that the light shielding member (400) shields the first window (110).
4. The front end assembly of claim 2, characterized in that one of the lens mount (100) and the cover portion (420) is provided with a positioning shaft (140), the other is provided with a positioning recess, and the positioning shaft (140) is rotatably fitted in the positioning recess.
5. The front end assembly according to claim 4, wherein a gap is provided between a distal end surface of the lens holder (100) and an inner wall surface of the cover portion (420).
6. The front end assembly according to any one of claims 1 to 5, further comprising an adapter (600), wherein the adapter (600) is rotatably disposed in the lens holder (100), and the adapter (600) is configured to receive a distal end portion of the instrument tube (700) so as to adjust an orientation of the distal end portion of the instrument tube (700).
7. The front end assembly of claim 6, further comprising a guide assembly (800), the guide assembly (800) coupled to the adapter (600) to drive rotation of the adapter (600);
The guide assembly (800) comprises a guide tube (810) and a traction piece (820), wherein the distal end of the guide tube (810) is bent and arranged to face the outer edge of the adapter piece (600), the traction piece (820) penetrates through the guide tube (810) to be connected with the outer edge of the adapter piece (600), and the adapter piece (600) is provided with a containing groove (610) for containing the traction piece (820).
8. An insert comprising the front end assembly of any one of claims 1-7.
9. An endoscope comprising the insertion portion according to claim 8.
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| CN202411541772.6A CN119055162B (en) | 2024-10-31 | 2024-10-31 | Front end assembly, insertion portion and endoscope |
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| CN110234264A (en) * | 2017-02-01 | 2019-09-13 | 波士顿科学国际有限公司 | Endoscope with multiple viewing directions |
| CN118717348A (en) * | 2024-09-04 | 2024-10-01 | 四川省畜牧科学研究院 | A sterile insemination gun for cattle |
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| JP4459771B2 (en) * | 2004-09-30 | 2010-04-28 | Ｈｏｙａ株式会社 | Processor for electronic endoscope |
| JP2006288759A (en) * | 2005-04-11 | 2006-10-26 | Olympus Medical Systems Corp | Endoscope insertion part and endoscope |
| JP5318142B2 (en) * | 2011-03-31 | 2013-10-16 | 富士フイルム株式会社 | Electronic endoscope |
| JP5318148B2 (en) * | 2011-04-08 | 2013-10-16 | 富士フイルム株式会社 | Endoscope camera module |
| JP6081424B2 (en) * | 2014-09-16 | 2017-02-15 | 富士フイルム株式会社 | Ultrasound endoscope hood and ultrasound endoscope |
| EP3422922B1 (en) * | 2016-03-01 | 2022-10-19 | Cook Medical Technologies LLC | Deflecting endoscope accessory channels |
| CN221886605U (en) * | 2024-03-01 | 2024-10-22 | 杭州海康威视数字技术股份有限公司 | Video camera with electrochromic window |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110234264A (en) * | 2017-02-01 | 2019-09-13 | 波士顿科学国际有限公司 | Endoscope with multiple viewing directions |
| CN118717348A (en) * | 2024-09-04 | 2024-10-01 | 四川省畜牧科学研究院 | A sterile insemination gun for cattle |
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