CN116195956A

CN116195956A - Hysteroscope with ultra-large view field

Info

Publication number: CN116195956A
Application number: CN202310153821.8A
Authority: CN
Inventors: 郭亮生; 郑丽君; 薛人峰; 徐通
Original assignee: Suzhou Ouchang Medical Technology Co ltd; Nuclear Industry General Hospital
Current assignee: Suzhou Ouchang Medical Technology Co ltd; Nuclear Industry General Hospital
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-06-02

Abstract

The invention provides an ultra-large field hysteroscope, which comprises: an endoscope tube, an operating handle, a control mechanism and a front end head; the operating handle includes: a rotary power assembly; the control mechanism comprises: the first transmission piece, the second transmission piece, the third transmission piece and the traction rope; the first transmission piece is in transmission connection with the output end of the rotary power assembly, the second transmission piece is in transmission connection with the first transmission piece through a bevel gear, the third transmission piece is matched with the second transmission piece and can be driven by the second transmission piece to pivot or move back and forth, one end of the traction rope is connected with the third transmission piece, and the other end of the traction rope penetrates through the endoscopic tube and stretches out; the front end head is pivotally connected to the front end of the endoscope tube and is in transmission connection with a traction rope extending out of the endoscope tube, and the front end head can be driven by the traction rope to swing. The front end of the hysteroscope is of a flexible bendable structure, large-angle bending can be realized in a short distance, multi-angle observation of focus positions can be realized, and the problem of single angle of the traditional hysteroscope is solved.

Description

Hysteroscope with ultra-large view field

Technical Field

The invention relates to the technical field of medical instruments, in particular to a hysteroscope with an ultra-large field of view.

Background

Hysteroscopes are devices with imaging devices at the front end, which enter the human body through natural ducts of the human body or through small incisions made by surgery. When in use, the hysteroscope is led into the organ to be inspected, the image of the relevant focus part can be directly peeped, the doctor can be helped to more comprehensively inspect the condition in the cavity, and the operation can be performed under the condition, so that the safety of the operation is greatly improved.

Hysteroscopes are mainly divided into hard tubes and soft tubes, and are also called hard hysteroscopes and soft hysteroscopes.

The hard hysteroscope comprises three parts of image transmission, illumination and air holes. The image transmission part is divided into an optical module composed of an objective lens, a relay system and an eyepiece lens for transmitting images. The illumination portion is formed by a cold light source penetrating the interior with a light-conducting fiber. The air holes only exist in part of hysteroscopes, and air supply, water supply and biopsy forceps are used. The hard hysteroscope products include arthroscopes, hysteroscopes, thoracoscopes, proctoscopes, hysteroscopes and the like.

Most of soft hysteroscopes use fiber light beams to transmit images and guide light or CCD to transmit images. It has been widely used in medicine because of its good flexibility and convenient handling properties. There are gastroscopes, duodenoscopes, colonoscopes, choledochoscopes, enteroscopes, bronchoscopes, nasopharyngeal laryngoscopes, ureteroscopes, and the like. The soft hysteroscope has the main advantages of having certain flexibility, being capable of conveniently entering into complex inner cavity organs of a human body, reducing pain of a patient, reaching places where the hard hysteroscope cannot reach, and eliminating vision blind areas of the lens to a certain extent by utilizing the bending guide mechanism of the head.

The soft hysteroscope can be divided into a fiber endoscope and an electronic endoscope.

The fiber endoscope structure comprises a tip part, a bending part, an inserting part, an operating part, a light guide hose, a light guide connecting part and an eyepiece. The front end is hard and small, and there are direct-view type (front-view type), side-view type and oblique-view type. The gastroscope colonoscope adopts a direct-view mode, the duodenum esophagoscope adopts a side-view mode. The front end part is provided with an objective lens hole (an image guide beam), a light hole (an image guide beam), an air-water hole (a nozzle) and a biopsy hole. The bending part adopts a steel wire traction method, the head part is provided with a steel wire connected to the handle, and the control wheel of the handle is rotated to respectively pull the steel wires in different directions, so that the bending head part swings towards the corresponding direction. The bending part is internally provided with a light guide beam, an image guide beam, various pipelines, a traction device, a bending pipe and a bending rubber. The hose portion comprises a curved portion and an insertion portion, also called a coil. Is provided with a light guide beam, an image guide beam, a water-gas pipeline, a biopsy pipeline (also called an aspiration pipeline), a traction steel wire, a stainless steel belt hose and a metal net pipe, and the outermost layer is a smooth plastic sleeve. The image conduction system of the fiber hysteroscope consists of fiber bundles, and consists of tens of thousands of superfine glass fibers, and according to the optical total reflection principle, all the glass fibers are required to be coated with a film with lower refractive index, so that the total reflection of light rays conducted by all inner core fibers can be ensured. The transmission of a single fiber can only produce one light spot, a large number of fibers must be integrated into a bundle in order to see an image, and the same image must be transmitted to the other end, so that the positions of each fiber at both ends are the same, called image-guiding bundles. One image guide beam is disconnected, and imaging is performed by one black point. The light guide beams do not need to be arranged at the same position, and the brightness is obviously reduced when a plurality of light guide beams are disconnected. Therefore, the image conduction mode has higher requirements on the manufacturing process of the fiber bundle and the preservation mode of the hysteroscope, and the damage of the fiber bundle can directly influence the imaging effect of the hysteroscope, and is also the imaging mode of the traditional hysteroscope at present.

The electronic hysteroscope uses CCD to replace image-guiding beam to transmit image signal, and then uses image processing center to process and convert it into video signal. The CCD solid-state imaging device is called a CCD image sensor, and is constructed by arranging a plurality of photodiodes (pixels) on a silicon substrate, converting imaging light thereon into an electric signal, and then transmitting the electric signal as it is to obtain an image signal. The structure of the electric hysteroscope is basically the same as that of a fiber endoscope, and the CCD is simply understood to replace an image guide beam, so that many functions are not achieved by the fiber endoscope. The electric hysteroscope has the advantages of clear images, convenient observation, low manufacturing cost and the like, and is one of the development directions of the current hysteroscopes.

With the development of semiconductor technology, integrated circuit technology and image sensors, the module volume of hysteroscope cameras is becoming smaller and smaller, and pixels are also higher and higher, and the traditional optical fiber image transmission mode is gradually replaced.

The hysteroscope is a new minimally invasive gynecological diagnosis and treatment technology, is used for intrauterine examination and treatment, and comprises a hysteroscope, an energy system, a light source system, a perfusion system and an imaging system; the anterior part of the endoscope body is used for entering the uterine cavity, and the endoscope body has an amplifying effect on the observed part, so that the endoscope body is a first-choice inspection method for gynecological hemorrhagic diseases and intrauterine lesions intuitively and accurately. In the prior art, when examining the uterus of a patient, a hysteroscope is usually required to be stretched into the uterus from the patient, the patient is observed, and after a focus is found, the hysteroscope is taken out to treat the patient, or the hysteroscope is reserved in the patient, and a therapeutic instrument is stretched into the patient at the same time to treat the patient.

In the process of performing an operation using a hysteroscope which is commonly used in the market at present, some problems exist as follows:

1. the tilt angle of the prior hysteroscope front end objective lens is a fixed angle, the visual field range is smaller, the front end cannot flexibly move, the imaging angle in the operation process cannot be adjusted, and the better visual field can be obtained only by swinging left and right and advancing and retreating the hysteroscope body, so that a certain degree of trouble is caused to patients and doctors. The imaging angle can be adjusted in real time in the operation through controlling the bendable part at the front end of the hysteroscope and rotating the extending part of the hysteroscope, and meanwhile, the shielding of surgical instruments can be avoided, and the auxiliary effect on the operation of a clinician is enhanced; the operation difficulty of doctors in the operation process is reduced, and the imaging angle and the angle of the surgical instrument can be adjusted in real time along with the focus part;

2. most of the prior hysteroscopes are reused, while most of the prior hysteroscopes can meet the requirements of repeated cleaning and sterilization, the time for cleaning and sterilizing the hysteroscopes after each operation is over is long, manpower is wasted, the cost of sterilizing equipment is high, the service life of the hysteroscopes can be shortened due to repeated sterilization, an image conduction system of the hysteroscopes is easy to damage, and the imaging effect is greatly affected;

3. the objective lens at the front end of the conventional hysteroscope is mostly an optical lens, and compared with electronic components, the production and manufacturing cost of the objective lens is much more expensive, and the objective lens is more easily damaged. Meanwhile, the conditions of disinfection, maintenance and storage of the optical lens are more severe, for example, the miniature electronic camera module is used for replacing the lens, so that the cost of the hysteroscope can be greatly reduced;

4. the conventional hysteroscope is a pure optical mechanism, the core component is an optical lens (an ocular lens and an objective lens) and an optical fiber, and the hysteroscope itself does not have the capability of providing a light source for a surgical field, and the hysteroscope needs to be externally connected with the light source through an interface of a handle part. The light source wire harness is closer to the position of the doctor holding the hysteroscope, and has certain interference to the operation of the doctor in the operation. The invention packages the light source together with the front-end camera module, avoids externally connecting a light source cable, and brings great convenience for doctors to operate;

5. the ocular lens of the prior hysteroscope is mostly a precise optical part, has higher cost and is easy to damage.

Therefore, in view of the above problems, it is necessary to propose a further solution.

Disclosure of Invention

The invention aims to provide an ultra-large visual field hysteroscope which overcomes the defects in the prior art.

To achieve the above object, the present invention provides an ultra-large field hysteroscope, comprising: an endoscope tube, an operating handle, a control mechanism and a front end head;

the operating handle includes: a rotary power assembly;

the control mechanism includes: the first transmission piece, the second transmission piece, the third transmission piece and the traction rope;

the first transmission piece is in transmission connection with the output end of the rotary power assembly, the second transmission piece is in transmission connection with the first transmission piece through a bevel gear, the third transmission piece is matched with the second transmission piece and can be driven by the second transmission piece to perform pivoting movement or back and forth movement, one end of the traction rope is connected with the third transmission piece, and the other end of the traction rope penetrates through the endoscopic tube and stretches out;

the front end head is pivotally connected to the front end of the endoscope tube and is in transmission connection with the traction rope extending out of the endoscope tube, and the front end head can be driven by the traction rope to swing in a preset angle range.

As an improvement of the ultra-large field hysteroscope, the rotary power assembly comprises: a driving gear and a driven gear; the driven gear is coaxially connected with the first transmission part, the driving gear is a gear ring, the gear ring is pivotally connected to the end part of the operating handle, and the inner side wall of the gear ring is meshed with the outer side wall of the driven gear.

As an improvement of the ultra-large field hysteroscope, the first transmission part is a worm which is coaxially sleeved on the output end of the rotary power assembly; the second transmission part is a worm wheel, and the worm wheel is coaxially sleeved on the pivot shaft of the rope wheel.

As an improvement of the super-large visual field hysteroscope, the third driving medium is a rope wheel, rope holes are respectively formed in two sides of the rope wheel, the rope holes on any side are communicated with the side face and the top face of the rope wheel, two traction ropes are arranged, and one ends of the two traction ropes penetrate through the corresponding rope holes and are locked on the top face of the rope wheel.

As an improvement of the ultra-large visual field hysteroscope, the rope wheel is provided with two locking wheels which are arranged in a central symmetry manner, and the end parts of the two traction ropes are fixed by the corresponding locking wheels.

As an improvement of the ultra-large visual field hysteroscope, the first transmission part is a bevel gear which is coaxially sleeved on the output end of the rotary power assembly; the second transmission piece is a combined gear which is pivotally connected to the inner side wall of the shell.

As an improvement of the ultra-large visual field hysteroscope, the third transmission part is a push rod, the push plate is arranged in a sliding way along a sliding groove on the inner side wall of the shell, the push plate is meshed with the combined gear, and one end of the traction rope is connected with the push plate.

As an improvement of the ultra-large field hysteroscope, the rear end face of the front end head comprises: the first limiting surface and the second limiting surface form an angle with the first limiting surface;

when the front end head is positioned at the initial position, the first limiting surface is abutted against the vertical surface of the front end of the endoscope tube, and when the front end head rotates to the limit position, the second limiting surface is abutted against the inclined surface of the front end of the endoscope tube.

As an improvement of the ultra-large visual field hysteroscope, when the number of the traction ropes is two, the first traction rope is connected to the first limiting surface, and the second traction rope is connected to the second limiting surface.

As an improvement of the ultra-large visual field hysteroscope, the front end head consists of at least two sections of snake bones; the end surface of any section of snake bone facing to the adjacent snake bone consists of a plane and an inclined plane, and the plane and the inclined plane form an incision between the two adjacent sections of snake bone.

As an improvement of the ultra-large visual field hysteroscope, all the incisions are arranged in the same direction or in spiral dislocation.

As an improvement of the ultra-large visual field hysteroscope, when the front end consists of two sections of snake bones, the two sections of snake bones are controlled by a rocker arranged on the ultra-large visual field hysteroscope shell to respectively and independently act.

As an improvement of the ultra-large field hysteroscope, the rocker comprises: a rocker handle movably arranged on the shell and a connecting part extending to the inside of the shell;

the connecting part is in transmission connection with the secondary section of the two sections of snake bones through the first steel wire rope and the second steel wire rope, and in transmission connection with the first section of the two sections of snake bones through the third steel wire rope and the fourth steel wire rope; the rocker handle drives the secondary section to act through the first steel wire rope and the second steel wire rope when swinging according to a first direction, and drives the primary section to act through the third steel wire rope and the fourth steel wire rope when swinging according to a second direction.

As an improvement of the ultra-large field hysteroscope, an imaging device is integrated in the front end head; the image forming apparatus includes: the device comprises a camera module and an illumination module; the camera module comprises an electronic camera; the illumination module comprises a plurality of LED light sources which are circumferentially distributed around the electronic camera at intervals.

As an improvement of the ultra-large field hysteroscope, the imaging device is arranged as one group or more than two groups; when the imaging devices are more than two groups, the imaging devices are circumferentially distributed in a plane according to a preset included angle, or the imaging devices are spirally staggered.

As an improvement of the ultra-large field hysteroscope, the ultra-large field hysteroscope also comprises an outer sheath tube; two channels are arranged in the outer sheath tube side by side, the endoscope tube is positioned in one of the channels, the front end head extends out of the channel, and a water filling port is further connected to the channel where the endoscope tube is positioned.

Compared with the prior art, the invention has the beneficial effects that:

the front end of the super-large visual field hysteroscope is of a flexible bendable structure, large-angle bending can be realized in a short distance, multi-angle observation of focus positions can be realized, and the problem of single angle of the traditional super-large visual field hysteroscope is solved.

Compared with the traditional super-large visual field hysteroscope, the cost of the super-large visual field hysteroscope is greatly reduced, the super-large visual field hysteroscope can be used as a disposable consumable without disinfection, the risk of infection caused by incomplete disinfection of the traditional super-large visual field hysteroscope is avoided, the waiting for disinfection and sterilization before each operation is avoided, and the operation preparation time is greatly shortened.

The lens in the ultra-large visual field hysteroscope uses the electronic camera module, the resolution of imaging can reach 1080p or even higher, and the imaging is clearer.

The lens in the ultra-large visual field hysteroscope uses the LED light source which is integrated with the electronic camera module, so that an extra light source cable and light source equipment are omitted, and the operation is more convenient.

The imaging module in the ultra-large visual field hysteroscope is mainly composed of electronic components, and compared with the traditional optical imaging module, the storage and maintenance difficulty is greatly reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic perspective view of embodiment 1 of the ultra-large field hysteroscope of the present invention;

FIG. 2 is an enlarged perspective view of the front head of FIG. 1;

FIG. 3 is an enlarged perspective view of the front head of FIG. 1 at another angle;

FIG. 4 is a perspective view of the oversized view hysteroscope of FIG. 1 with the housing removed;

FIG. 5 is a schematic perspective view of the extra-large field hysteroscope of FIG. 1 with the housing removed at another angle;

FIG. 6 is a partial perspective view of the oversized view hysteroscope of FIG. 1 with the housing removed at another angle;

FIG. 7 is a schematic perspective view of embodiment 2 of the ultra-large field hysteroscope of the present invention;

FIG. 8 is a perspective view of an embodiment 3 of the ultra-large field hysteroscope of the present invention with two imaging devices;

fig. 9 is a schematic perspective view of the imaging devices in embodiment 3 in three groups, and each imaging device is circumferentially distributed in a plane according to a preset included angle;

fig. 10 is a schematic perspective view of three imaging devices in embodiment 3, wherein each imaging device is spirally staggered;

FIG. 11 is a perspective view of a four-section snake bone at the front end of the embodiment 4 of the ultra-large field hysteroscope of the invention;

FIG. 12 is a schematic perspective view of the front end of FIG. 11 when bent;

fig. 13 is a perspective view of the rocker ball hinge of embodiment 4 connected to the housing;

FIG. 14 is an enlarged perspective view of the rocker in example 4;

fig. 15 is an exploded perspective view of the rocker of example 4 connected to the secondary and primary sections by four wires.

Description of the embodiments

The present invention will be described in detail with reference to the following embodiments, but it should be understood that these embodiments are not limiting, and functional, method, or structural equivalents and alternatives thereof by those skilled in the art are within the scope of the present invention.

The invention provides an ultra-large visual field hysteroscope which has a simple structure and low cost. Therefore, the disposable hysteroscope can be used as disposable consumable without disinfection, avoids the risk of infection caused by incomplete disinfection of the traditional oversized view hysteroscope, does not need to wait for disinfection and sterilization before each operation, and greatly shortens the operation preparation time. The technical scheme of the ultra-large field hysteroscope of the present invention is illustrated below with reference to examples 1 and 2.

Examples

As shown in fig. 1, the ultra-large field hysteroscope of this embodiment includes: endoscope 10, operating handle 20, control mechanism 30, head 40, and outer pin 50.

Front end 40 is pivotally connected to the front end of endoscope 10, so that front end 40 can be introduced into the body for medical observation through the natural canal of the body or through a small incision made by surgery by means of endoscope 10.

As shown in fig. 2 and 3, an imaging device 60 is also integrated into the front tip 40 for ease of medical viewing. The imaging device 60 includes: a camera module 41 and an illumination module 42. The illumination module 42 is used for providing illumination, and the camera module 41 is used for collecting images within an imaging range and transmitting the images to the display end for observation by a doctor. In this embodiment, the camera module 41 includes an electronic camera; the illumination module 42 includes a plurality of LED light sources circumferentially spaced around the electronic camera.

Therefore, as the lens in the ultra-large field hysteroscope of the embodiment uses the electronic camera module, the resolution of imaging can reach 1080p or even higher, and the imaging is clearer. Meanwhile, the lens in the ultra-large visual field hysteroscope is an LED light source which is integrated with the electronic camera module, so that an extra light source cable and light source equipment are omitted, and the operation is more convenient. In addition, since the image pickup module 41 in the hysteroscope with an ultra-large field of view in the embodiment is mainly composed of electronic components, the storage and maintenance difficulties are greatly reduced compared with the conventional optical image pickup module 41.

The control mechanism 30 can be manipulated by operating the handle 20 such that the control mechanism 30 rotates the front head 40 within a range of angles. Therefore, the front end can realize large-angle bending in a short distance, can realize multi-angle observation of focus positions, and solves the problem of single angle of the traditional super-large-view hysteroscope.

As shown in fig. 4 and 5, the operation handle 20 includes: and a rotary power assembly 21. In one embodiment, the rotary power assembly 21 includes: a driving gear 211 and a driven gear 212; the driven gear 212 is coaxially connected to the first transmission member, and the driving gear 211 is a ring gear pivotally connected to the end of the operating handle 20, and the inner side wall thereof is engaged with the outer side wall of the driven gear 212. Thus, when the driving gear 211 is manually rotated, it can drive the driven gear 212 fixedly disposed in the radial direction to rotate, and the driven gear 212 can be used as the output end of power.

The control mechanism 30 includes: the first transmission member 31, the second transmission member 32, the sheave 33, the first traction rope 34, and the second traction rope 35. The first transmission member 31 is in transmission connection with the output end of the rotary power assembly 21, and the second transmission member 32 is in transmission connection with the first transmission member 31 through a bevel gear. Thus, when the first transmission member 31 rotates, the second transmission member 32 is driven to axially rotate.

In one embodiment, the first transmission member 31 is a worm coaxially sleeved on the output end of the rotary power assembly 21; the second transmission member 32 is a worm wheel coaxially sleeved on the pivot shaft of the sheave 33. Thus, the axial power input can be converted into radial power output.

The rope wheel 33 is coaxially connected with the second transmission member 32, one end of the first traction rope 34 is wound and locked on one side of the rope wheel 33, the other end of the first traction rope penetrates through the endoscope tube 10 and stretches out, one end of the second traction rope 35 is wound and locked on the other side of the rope wheel 33, and the other end of the second traction rope penetrates through the endoscope tube 10 and stretches out. Thus, when the rope pulley 33 rotates under the drive of the second transmission member 32, the rope pulley 33 can further drive the traction ropes at two sides to stretch. In one embodiment, the first traction rope 34 and the second traction rope 35 are both steel wires.

As shown in fig. 6, two rope holes 331 are respectively formed on two sides of the rope pulley 33, and the rope holes 331 on either side are communicated with the side surface and the top surface of the rope pulley 33. One end of the traction rope passes through the corresponding rope hole 331 and is locked to the top surface of the sheave 33. In order to facilitate the traction ropes on both sides to extend out and be locked on the rope pulley 33, the rope pulley 33 is provided with two locking wheels 332 which are arranged in a central symmetry manner. At this time, the ends of the first traction rope 34 and the second traction rope 35 are fixed by the corresponding locking wheels 332.

The head 40 is in driving connection with a first pull cord 34 and a second pull cord 35 extending from the endoscope 10. Thus, when the control mechanism 30 drives the sheave 33 to rotate, the front end 40 can be driven by the first traction rope 34 and the second traction rope 35 to swing within a preset angle range.

The rear end face of the front head 40 includes: the first limiting surface 41 and the second limiting surface 42 forming an angle with the first limiting surface 41. At this time, the first traction rope 34 is connected to the first limiting surface 41, and the second traction rope 35 is connected to the second limiting surface 42. Thus, when the front tip 40 is in the initial position, it is abutted against the vertical surface of the front end of the endoscope tube 10 by the first limiting surface 41; when the front end 40 rotates to the limit position, the front end abuts against the inclined surface of the front end of the endoscope tube 10 through the second limiting surface 42. By providing the first and second stopper surfaces 41 and 42, the front head 40 can swing within a certain angle range. In one embodiment, front tip 40 oscillates through an angle ranging from 0 to 90.

By pulling the traction rope, the front end 40 can swing in the angle range of 0 to 90 °. Meanwhile, the field angle of the camera module 41 is 120 °, plus 90 ° rotatable, and the field angle of the oversized view hysteroscope of the present embodiment is 210 °. In addition, the total viewing angle is not constant, and as the viewing angle increases with the technical progress of the camera module 41, the total viewing angle can also increase, and the rotation angle 90 ° is also not a fixed value, and can be increased and decreased according to the requirements.

The outer sheath 50 is provided with two

channels

51, 52 arranged side by side, the endoscope 10 is positioned in one of the channels 51, the front end 40 extends out of the channel 51, and a water filling port 53 is also connected to the channel 51 in which the endoscope 10 is positioned. The other channel 52 serves as a working channel.

Examples

As shown in fig. 7, this embodiment is different from embodiment 1 in that the first transmission member and the second transmission member are different in structural form, and the sheave is replaced with a push rod. Specifically, in this embodiment, the first transmission member 31 is a bevel gear, and the bevel gear is coaxially sleeved on the output end of the rotary power assembly; the second transmission member 32 is a combination gear pivotally connected to the inner sidewall of the housing. Meanwhile, the third transmission member 33 is a push rod, the push plate is slidably arranged along a chute on the inner side wall of the housing, and is meshed with the combined gear, and one end of the traction rope is connected with the push plate. Thus, the operating handle 20 can control the push rod to stretch the traction rope, so as to drive the front end 40 to swing.

Examples

As shown in fig. 8, 9, 10, the present embodiment differs from embodiment 1 in that the imaging device 60 is provided in two or more groups. When the imaging devices 60 are more than two groups, each imaging device 60 is circumferentially distributed in a plane according to a preset included angle, or each imaging device 60 is spirally staggered.

When the imaging devices 60 are two groups, the two imaging devices 60 are placed at a certain angle, and the imaging videos of the two imaging devices 60 are spliced after imaging, so that an ultra-large imaging range can be seen. Thus, the angle of view of the single imaging device 60 is 120 °, and the two imaging devices 60 are spliced into a 165 ° angle of view by a certain angle, and it is obvious that the angle between the two imaging devices 60 can be adjusted according to the actual use requirement, and is not constant.

Examples

As shown in fig. 11 and 12, this embodiment is different from embodiment 1 in that the front tip 40 is composed of at least two snake bones to cover a larger visual angle. The end face of any section of snake bone facing to the adjacent snake bone consists of a plane and an inclined plane, and the plane and the inclined plane enable an incision to be formed between the two adjacent sections of snake bone. Wherein, the cuts are arranged in the same direction or in spiral dislocation. Thus, the front end 40 can swing spirally, and compared with a single-section mode, the multi-section imaging can be reversely performed, and the imaging angle requirement of more drilling is realized. It will be apparent that the incision angle and the snake bone pitch can be adjusted according to specific requirements.

As shown in fig. 13, 14 and 15, when the front end 40 is composed of two sections of snake bones, the two sections of snake bones are controlled by a rocker 70 arranged on the outer casing of the hysteroscope with an oversized view field to respectively and independently act. In this way, the movement of the front end 40 is facilitated to be more flexible, and different requirements in actual operation are met.

Specifically, the rocker 70 includes: a rocker handle 71 movably disposed on the housing and a connecting portion 72 extending into the housing. Wherein, the rocker handle 71 is in spherical hinge connection with the shell.

The connecting part 72 is in transmission connection with the secondary section of the two sections of snake bones through a first steel wire rope 73 and a second steel wire rope 74, and is in transmission connection with the first section of the two sections of snake bones through a third steel wire rope 75 and a fourth steel wire rope 76; the rocker handle 71 drives the secondary section to act through the first wire rope 73 and the second wire rope 74 when swinging in the first direction, and drives the primary section to act through the third wire rope 75 and the fourth wire rope 76 when swinging in the second direction.

Because of the cuts between the snake bones, when the rocker 70 is rocked left and right (here, left, right, up, down are those of the paper surface), the first wire rope 73 and the second wire rope 74 drive the snake bones to extend and retract one by one, and the cut angle between the minor segment and the end segment is changed. Similarly, swinging rocker 70 up and down, three 75 and four 76 wire ropes change the angle of the cut between the first and second sections.

The above-mentioned change is the case of independent movement of each section, but in the practical operation, the required angle may be more rounded, so that the combined movement of the rocker 70 up, down, left and right is that the angles of the two cuts at the front end are changed at the same time. Therefore, the four steel wires are combined with the rocker 70, so that the movement of the front end 40 is more diversified, and the applicable scene range is wider. In addition, the notch angle and the two-notch stagger angle described in this example can be adjusted and designed according to practical situations.

In conclusion, the front end of the super-large visual field hysteroscope is of a flexible bendable structure, large-angle bending can be achieved in a short distance, multi-angle observation of focus positions can be achieved, and the problem that the angle of a traditional super-large visual field hysteroscope is single is solved. Compared with the traditional super-large visual field hysteroscope, the cost of the super-large visual field hysteroscope is greatly reduced, the super-large visual field hysteroscope can be used as a disposable consumable without disinfection, the risk of infection caused by incomplete disinfection of the traditional super-large visual field hysteroscope is avoided, the waiting for disinfection and sterilization before each operation is avoided, and the operation preparation time is greatly shortened. The lens in the ultra-large visual field hysteroscope uses the electronic camera module, the resolution of imaging can reach 1080p or even higher, and the imaging is clearer. The lens in the ultra-large visual field hysteroscope uses the LED light source which is integrated with the electronic camera module, so that an extra light source cable and light source equipment are omitted, and the operation is more convenient. The imaging module in the ultra-large visual field hysteroscope is mainly composed of electronic components, and compared with the traditional optical imaging module, the storage and maintenance difficulty is greatly reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. An oversized field-of-view hysteroscope, characterized in that it comprises: an endoscope tube, an operating handle, a control mechanism and a front end head;

the operating handle includes: a rotary power assembly;

2. The oversized field hysteroscope of claim 1, characterized in that the rotary power assembly comprises: a driving gear and a driven gear; the driven gear is coaxially connected with the first transmission part, the driving gear is a gear ring, the gear ring is pivotally connected to the end part of the operating handle, and the inner side wall of the gear ring is meshed with the outer side wall of the driven gear.

3. The ultra-large field hysteroscope according to claim 1 or 2, characterized in that the first transmission member is a worm coaxially sleeved on the output end of the rotary power assembly; the second transmission part is a worm wheel, and the worm wheel is coaxially sleeved on the pivot shaft of the rope wheel;

the third transmission part is a rope wheel, rope holes are respectively formed in two sides of the rope wheel, the rope holes on any side are communicated with the side face and the top face of the rope wheel, two traction ropes are arranged, and one ends of the two traction ropes penetrate through the corresponding rope holes and are locked on the top face of the rope wheel; the rope wheel is provided with two locking wheels which are arranged in a central symmetry mode, and the end parts of the two traction ropes are fixed by the corresponding locking wheels.

4. The ultra-large field hysteroscope according to claim 1 or 2, characterized in that the first transmission member is a bevel gear coaxially sleeved on the output end of the rotary power assembly; the second transmission part is a combined gear which is pivotally connected to the inner side wall of the shell; the third transmission piece is a push rod, the push plate is arranged in a sliding way along a sliding groove on the inner side wall of the shell, the push plate is meshed with the combined gear, and one end of the traction rope is connected with the push plate.

5. The ultra-large field hysteroscope according to claim 1, wherein the rear face of the front tip comprises: the first limiting surface and the second limiting surface form an angle with the first limiting surface;

when the front end head is positioned at the initial position, the front end head is propped against the vertical surface of the front end of the endoscope tube through the first limiting surface, and when the front end head rotates to the limit position, the front end head is propped against the inclined surface of the front end of the endoscope tube through the second limiting surface; when the number of the traction ropes is two, the first traction ropes are connected to the first limiting surface, and the second traction ropes are connected to the second limiting surface.

6. The ultra-large field hysteroscope according to claim 1 or 5, wherein the front tip is composed of at least two sections of snake bones; the end face of any section of snake bone facing to the adjacent snake bone consists of a plane and an inclined plane, and the plane and the inclined plane form a notch between the two adjacent sections of snake bones; the cuts are arranged in the same direction or in spiral dislocation.

7. The super large field hysteroscope according to claim 6, wherein when the front end is composed of two sections of snake bones, the two sections of snake bones are controlled by a rocker provided on the super large field hysteroscope housing to act independently.

8. The ultra-large field hysteroscope according to claim 7, wherein the rocker comprises: a rocker handle movably arranged on the shell and a connecting part extending to the inside of the shell;

9. The ultra-large field hysteroscope according to claim 1, wherein the front tip further has an imaging device integrated therein; the image forming apparatus includes: the device comprises a camera module and an illumination module; the camera module comprises an electronic camera; the lighting module comprises a plurality of LED light sources which are circumferentially distributed around the electronic camera at intervals;

the imaging device is arranged as one group or more than two groups; when the imaging devices are more than two groups, the imaging devices are circumferentially distributed in a plane according to a preset included angle, or the imaging devices are spirally staggered.

10. The oversized field hysteroscope of claim 1 further comprising an outer sheath; two channels are arranged in the outer sheath tube side by side, the endoscope tube is positioned in one of the channels, the front end head extends out of the channel, and a water filling port is further connected to the channel where the endoscope tube is positioned.