Hemispherical push-and-pull visual puncture cannula

Abstract

The invention relates to the technical field of arthroscopes, and provides a hemispherical push-and-pull visual puncture cannula which comprises an arthroscope core and a handle, the end, away from the handle, of the arthroscope core is the front end, the front end is of a semi-spherical protruding structure, the front end is provided with a first groove, the first groove is of a semi-spherical structure, and the hemispherical push-and-pull visual puncture cannula further comprises a camera part arranged in the first groove. By means of the technical scheme, the problem that in the prior art, after an arthroscope enters joint tissue, the tissue cannot be effectively separated is solved.

Description

Technical Field

[0001] The invention relates to the technical field of arthroscopy, and in particular to a hemispherical push-pull visual puncture sleeve. Background Art

[0002] In the field of modern orthopedics and sports medicine, arthroscopic surgery has become an indispensable diagnostic and treatment method. With the continuous advancement of science and technology, electronic arthroscopy has emerged, which combines optical imaging technology with electronic sensor technology to provide doctors with clearer and more accurate images of the inside of the joint to assist in more delicate surgical operations.

[0003] Electronic arthroscopes are usually composed of a body, a light source, an imaging system, and an operating channel. The body is responsible for entering the joint cavity, and the optical or electronic components at the front end are used to collect images; the light source provides sufficient lighting for the observation area; and the imaging system converts the collected light signals into electrical signals and processes them into images that can be observed by doctors. However, in actual clinical applications, electronic arthroscopy has a significant problem. When the arthroscope enters the joint tissue, it cannot effectively separate the tissue due to the design characteristics of the arthroscope itself. In many cases of joint diseases, the internal tissues of the joint may adhere and accumulate together due to inflammation, trauma or lesions. When the electronic arthroscope enters such an environment, the surrounding tissues will adhere to the lens of the arthroscope, blocking the field of view. Summary of the invention

[0004] The present invention provides a hemispherical push-pull visual puncture sleeve, which solves the problem in the related art that after the arthroscopy enters the joint tissue, the tissue cannot be effectively separated.

[0005] The technical solution of the present invention is as follows: A hemispherical push-pull visual puncture cannula comprises a lens core and a handle, wherein the end of the lens core away from the handle is a front end, the front end is a hemispherical protrusion structure, the front end has a first groove, the first groove is a hemispherical structure, and further comprises: The camera is arranged in the first groove.

[0006] Optionally, the camera element has a lens, the lens has a second groove, the second groove is a semi-spherical structure, and the first groove is smoothly connected to the second groove.

[0007] Optionally, the first groove is obliquely arranged at the front end, and the lens is oriented in an inclination angle range of 0 to 70° with respect to the lens core.

[0008] Optionally, the front end may extend 7 to 8 mm.

[0009] Optionally, the front end has a circular chamfer.

[0010] Optionally, the end of the mirror core close to the handle is the rear end, and the mirror core has the front end, the bending section and the rear end arranged in sequence, and the bending section is a hose.

[0011] Optionally, it also includes: There are a plurality of first circular rings, the first circular rings are slidably disposed on the bending section and are located in the mirror core, the plurality of first circular rings are arranged at intervals along the direction of the mirror core, and the first circular rings are of a truncated cone structure; A mounting plate, disposed on the first ring near the rear end; A first sliding rod, slidably disposed in the mirror core, wherein one end of the first sliding rod is disposed on the mounting plate, and the other end is a first control end, and the first control end is used to control the sliding of the first sliding rod; A second slide bar is slidably arranged in the mirror core, one end of the second slide bar is arranged on the mounting plate, the first slide bar and the second slide bar are symmetrically arranged along the central axis of the mounting plate, the other end of the second slide bar is a second control end, and the second control end is used to control the sliding of the second slide bar, after the first slide bar or the second slide bar slides respectively, the bending section is driven to bend, and after the first slide bar and the second slide bar slide synchronously, the bending section is driven to straighten.

[0012] Optionally, it also includes: There are a plurality of rubber pads, which are respectively arranged on a plurality of the first circular rings. When the first circular rings are close to each other, the rubber pads are squeezed.

[0013] Optionally, it also includes: There are a plurality of second circular rings, all of which are sleeved outside the mirror core and slidably arranged outside the mirror core. The plurality of second circular rings are spaced apart along the direction of the mirror core, and adjacent second circular rings form a bending gap near one end of the first sliding rod, and the ends near the second sliding rod abut against each other.

[0014] Optionally, the other ends of the first slide bar and the second slide bar have teeth, and the other ends of the first slide bar and the second slide bar extend into the handle, further comprising: There are two gears, both of which are rotatably and slidably arranged in the handle. After the gears slide, they are used to mesh with the teeth. After the gears rotate, they are used to drive the first slide bar and / or the second slide bar to slide. The working principle and beneficial effects of the present invention are: In the present invention, in order to solve the problem that the arthroscopy in the related art cannot effectively separate the tissue after entering the joint tissue, this solution designs the front end of the mirror core as a semi-spherical protrusion structure, so that after the mirror core penetrates the tissue, the front end can separate the tissue, which is convenient for observing the tissue. The front end is not only provided with a camera but also with an LED light for lighting. In arthroscopic surgery, when using this hemispherical push-pull visual puncture sleeve, the operator holds the handle and slowly pushes the front end of the mirror core toward the joint tissue. Since the front end is a semi-spherical protrusion structure, the shape of the semi-spherical can naturally push and separate the surrounding tissues during the process of penetrating the tissue. Unlike traditional arthroscopy, it does not require additional complex operations to separate tissues. In this process, the LED light is turned on to illuminate the internal environment of the joint. At the same time, the camera in the first groove starts to work, capturing the image inside the joint in real time, and transmitting the image information to an external display device, providing doctors with a clear and comprehensive internal view of the joint.

[0015] During the operation, if the observation angle or depth needs to be adjusted, the position of the lens core in the joint is controlled by pushing and pulling the handle. The front end of the semi-spherical protrusion can always maintain the separation effect on the tissue, ensuring that the field of view of the camera is not blocked by the tissue, ensuring continuous and stable observation effects.

[0016] By designing the front end of the lens core into a semi-spherical convex structure, the problem that the traditional arthroscope cannot effectively separate the tissue after entering the joint tissue is successfully solved. During the surgical operation, this structure can naturally push and separate the surrounding tissue when the lens core penetrates the tissue, avoiding the situation where the tissue adheres to the lens and blocks the field of view. The camera and LED light equipped on the front end complement each other. The LED light provides sufficient illumination for the inside of the joint, ensuring that the camera can work in a bright environment. And the camera can obtain clear and comprehensive images of the inside of the joint under the guarantee of the semi-spherical convex structure to effectively separate the tissue, greatly reducing the blind spot of observation. This enables doctors to accurately observe the lesions inside the joint, improves the accuracy of diagnosis, and provides a reliable basis for subsequent surgical treatment. Due to the separation function of the semi-spherical convex structure itself, the dependence on the introduction of instruments from the operating channel for tissue separation is reduced. This not only simplifies the operation process and reduces the complexity of the surgical operation, but also reduces the damage to the surrounding normal tissues that may be caused by the operation of the operating instrument in a limited space, improves the safety of the operation, and also helps to shorten the operation time and promote the patient's postoperative recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of point A; Figure 3 It is a cross-sectional schematic diagram of the present invention; Figure 4 for Figure 3 An enlarged schematic diagram of point B; Figure 5 for Figure 3 An enlarged schematic diagram of point C; Figure 6 It is a schematic diagram of the gear structure of the present invention; Figure 7 It is a partial cross-sectional schematic diagram of the handle of the present invention; Figure 8 This is a schematic diagram of the first groove structure of the present invention.

[0019] In the figure: 1, mirror core, 2, handle, 11, front end, 111, first groove, 3, camera element, 31, lens, 311, second groove, 112, arc chamfer, 12, rear end, 13, bending section, 4, first ring, 5, mounting plate, 6, first slide bar, 61, first control end, 7, second slide bar, 71, second control end, 8, rubber pad, 9, second ring, 91, bending gap, 10, teeth, 110, gear. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, they can also be understood as further technical solutions without creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] Reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, proposes a hemispherical push-pull visual puncture cannula, including a lens core 1 and a handle 2, the end of the lens core 1 away from the handle 2 is a front end 11, the front end 11 is a hemispherical protrusion structure, the front end 11 has a first groove 111, the first groove 111 is a hemispherical structure, and also includes: a camera 3, which is arranged in the first groove 111.

[0024] In this embodiment, in order to solve the problem that the arthroscopy in the related art cannot effectively separate the tissue after entering the joint tissue, this embodiment designs the front end 11 of the mirror core 1 as a semi-spherical protrusion structure, so that after the mirror core 1 penetrates the tissue, the front end 11 can separate the tissue, which is convenient for observing the tissue. The front end 11 is not only provided with a camera 3 but also with an LED light for lighting. In arthroscopic surgery, when using this hemispherical push-pull visual puncture sleeve, the operator holds the handle 2 and slowly pushes the front end 11 of the mirror core 1 toward the joint tissue. Since the front end 11 is a semi-spherical protrusion structure, the shape of the semi-spherical shape can naturally push and separate the surrounding tissues during the process of penetrating the tissue. Unlike traditional arthroscopy, it does not require additional complex operations to separate tissues. In this process, the LED light is turned on to illuminate the internal environment of the joint. At the same time, the camera 3 in the first groove 111 starts to work, capturing the image inside the joint in real time, and transmitting the image information to an external display device, providing a clear and comprehensive internal view of the joint for the doctor.

[0025] During the operation, if the observation angle or depth needs to be adjusted, the position of the lens core 1 in the joint is controlled by pushing and pulling the handle 2. The front end 11 of the semi-spherical protrusion can always maintain the separation effect on the tissue, ensuring that the field of view of the camera 3 is not blocked by the tissue, thereby ensuring a continuous and stable observation effect.

[0026] By designing the front end 11 of the lens core 1 into a semi-spherical convex structure, the problem that the traditional arthroscope cannot effectively separate the tissue after entering the joint tissue is successfully solved. During the surgical operation, this structure can naturally push away and separate the surrounding tissue when the lens core 1 penetrates the tissue, avoiding the situation where the tissue adheres to the periphery of the lens and blocks the field of view. The camera 3 and the LED light equipped on the front end 11 complement each other. The LED light provides sufficient lighting for the inside of the joint, ensuring that the camera 3 can work in a bright environment. And the camera 3 can obtain a clear and comprehensive image of the inside of the joint under the guarantee of the semi-spherical convex structure for effective separation of tissue, greatly reducing the blind spot of observation. This enables doctors to accurately observe the pathological conditions inside the joint, improves the accuracy of diagnosis, and provides a reliable basis for subsequent surgical treatment. Due to the separation function of the semi-spherical convex structure itself, the dependence on the introduction of instruments from the operating channel for tissue separation is reduced. This not only simplifies the operation process and reduces the complexity of the surgical operation, but also reduces the damage to the surrounding normal tissues that may be caused by the operation of the operating instrument in a limited space, improves the safety of the operation, and also helps to shorten the operation time and promote the patient's postoperative recovery.

[0027] Furthermore, the camera element 3 has a lens 31 , and the lens 31 has a second groove 311 . The second groove 311 is a semi-spherical structure, and the first groove 111 is smoothly connected to the second groove 311 .

[0028] In this embodiment, the lens 31 of the camera 3 is a second groove 311 structure, and the second groove 311 is also a semi-spherical structure, and the first groove 111 is smoothly connected to the second groove 311. During the operation, when the medical staff inserts the sleeve into the joint tissue, the semi-spherical protrusion of the front end 11 of the lens core 1 smoothly separates the tissue. At this time, the camera 3 starts to work. Since the second groove 311 of the lens 31 is a semi-spherical structure, on the one hand, when the surrounding tissue moves during the operation or an instrument approaches, this shape can prevent the tissue or instrument from directly colliding with the lens 31, so that the tissue slides along its curved surface, effectively protecting the lens 31. On the other hand, this structure allows for closer observation of the tissue. In some delicate joint surgeries, it is necessary to observe the tiny ligaments and joint surfaces in detail. The semi-spherical structure of the second groove 311 brings the lens 31 closer to the observation target. Without affecting the field of view, the doctor can obtain clearer and more detailed tissue images, just like using an observation device with special protection and magnification functions, which can more accurately observe the lesions, degree of damage and relationship of the tissue with the surrounding tissues.

[0029] The smooth connection between the semi-spherical structure of the second groove 311 of the lens 31 and the first groove 111 provides a strong protective barrier for the lens 31. In the complex and changeable intra-articular environment, whether it is the interference of the operation of the surgical instrument or the active friction of the joint tissue itself, the damage to the lens 31 can be minimized. This protection mechanism significantly reduces the frequency of equipment failures caused by damage to the lens 31, extends the service life of the equipment, reduces the cost of maintenance and replacement, and ensures the stable use of the equipment in multiple operations. The enhanced close-range observation capability is a highlight of this design. In the diagnosis and treatment of joint diseases, being able to observe tissue details more clearly is crucial for accurately judging the condition and formulating accurate surgical plans. Doctors can more clearly see tiny lesions in the joint, such as early cartilage wear, tiny tears of ligament fibers, etc., thereby improving the accuracy of diagnosis. During the operation, this close observation helps to operate the surgical instruments more accurately, avoid accidental injury to the surrounding healthy tissues, and improve the success rate of the operation and the quality of the patient's rehabilitation. In summary, the special structural design of the lens 31 not only protects the equipment, but also optimizes the observation effect, thereby improving the efficiency and quality of the entire arthroscopic surgery.

[0030] Furthermore, the first groove 111 is tilted at the front end 11 , and the lens 31 is tilted at an angle ranging from 0° to 70° with respect to the lens core 1 .

[0031] In this embodiment, the first groove 111 is placed obliquely at the front end 11. The camera 3 is installed in the first groove 111, and its lens 31 is oriented to form a certain inclination angle with the lens core 1, and the inclination angle ranges from 0 to 70°. Due to the inclined setting of the first groove 111 and the specific inclination angle between the lens 31 and the lens core 1, the viewing angle of the camera 3 is greatly optimized. When the lens core 1 enters the joint tissue, the semi-spherical protrusion structure separates the surrounding tissue, and at this time, the camera 3 starts to collect images. Unlike traditional vertical or fixed-angle camera devices, this inclined design allows the camera 3 to cover a wider area. For example, when observing the lesions of the labrum of the shoulder joint, the doctor can adjust the position of the lens core 1 and use the inclined angle of the camera 3 to not only clearly see the front of the labrum, but also observe its side and the connection with surrounding tendons, ligaments and other tissues, without frequently adjusting the insertion depth and direction of the sleeve, reducing unnecessary disturbance to the joint tissue.

[0032] The tilted setting of the first groove 111 and the tilt angle of 0-70° between the lens 31 and the lens core 1 significantly expand the observation range of the camera 3. In the complex three-dimensional structure inside the joint, the traditional arthroscopic observation method often has blind spots, and this design enables doctors to obtain a more comprehensive field of view. This helps to discover some lesions located at the edge or hidden position of the traditional observation angle, such as tiny lesions in the folds of the joint capsule, early lesions on the edge of the joint surface, etc., improving the comprehensiveness and accuracy of disease diagnosis.

[0033] Furthermore, the front end 11 may extend 7 to 8 mm.

[0034] In the present embodiment, during arthroscopic surgery, such as knee arthroscopic surgery, after the visual puncture sleeve is inserted into the joint cavity, the doctor gradually probes out the front end 11 of the mirror core 1 from the sleeve by operating the handle 2. Because the depth that can be probed reaches 7-8mm, it is deeper than the traditional arthroscope. In this process, the semi-spherical protrusion structure of the front end 11 will push away the surrounding tissues, creating favorable conditions for observation. When starting to observe the inside of the joint, due to the increase in the depth of probing, the camera 3 can capture images of a wider area. For example, when observing deeper parts such as the posterior horn of the knee meniscus and the attachment point of the cruciate ligament, the traditional arthroscope may not be able to observe clearly and comprehensively, but the front end 11 of the mirror core 1 of the present visual puncture sleeve can penetrate into these parts, so that the camera range covers more joint tissues, including some areas that were originally in the blind spot of observation.

[0035] The wider camera range provides doctors with richer image information. Doctors can observe the morphology, positional relationship and pathological characteristics of each structure in the joint in more detail, so as to more accurately judge the type, degree and scope of the disease. This helps to avoid misdiagnosis and missed diagnosis, and provides a strong basis for formulating scientific and reasonable treatment plans.

[0036] Furthermore, the front end 11 has a circular chamfer 112 .

[0037] In this embodiment, the front end 11 of the lens core 1 is a semi-spherical convex structure, and can be extended by 7-8mm. At the same time, the front end 11 has a circular chamfer 112. When the front end 11 of the lens core 1 enters the tissue, the circular chamfer 112 first contacts the tissue. When the front end 11 interacts with the tissue, the circular chamfer 112 can effectively prevent the sharp edges from causing damage to the joint tissue. In addition, the circular chamfer 112 is located at the connection between the first groove 111 and the front end 11. During the operation, when the camera 3 works in the first groove 111, due to the presence of the circular chamfer 112, it can prevent the accumulation of fluid at the lens 31. In a joint such as a hip joint, there may be some inflammatory exudate or lavage fluid. If there is no circular chamfer 112, the liquid may accumulate around the lens 31, affecting the line of sight. With this design, the liquid can flow away along the circular chamfer 112, keeping the lens 31 clean, and ensuring that the camera 3 can continue to collect images clearly. Moreover, the design of the circular chamfer 112 further expands the camera range.

[0038] Furthermore, one end of the mirror core 1 close to the handle 2 is a rear end 12, and the mirror core 1 has a front end 11, a bending section 13 and a rear end 12 arranged in sequence, and the bending section 13 is a hose. It also includes: a first circular ring 4, which has a plurality of first circular rings 4, which are slidably arranged on the bending section 13 and are located in the mirror core 1, and the plurality of first circular rings 4 are arranged at intervals along the direction of the mirror core 1, and the first circular ring 4 is a truncated cone structure; a mounting plate 5, which is arranged on the first circular ring 4 near the rear end 12; a first slide bar 6, which is slidably arranged in the mirror core 1, one end of the first slide bar 6 is arranged on the mounting plate 5, and the other end is a first control end 61, and the first control end 61 is used to control the sliding of the first slide bar 6; a second slide bar 7, which is slidably arranged in the mirror core 1, and one end of the second slide bar 7 is arranged on the mounting plate 5, the first slide bar 6 and the second slide bar 7 are symmetrically arranged along the central axis of the mounting plate 5, and the other end of the second slide bar 7 is a second control end 71, and the second control end 71 is used to control the sliding of the second slide bar 7, and after the first slide bar 6 or the second slide bar 7 slides respectively, the bending section 13 is driven to bend, and after the first slide bar 6 and the second slide bar 7 slide synchronously, the bending section 13 is driven to straighten. It also includes: a plurality of rubber pads 8, which are respectively arranged on a plurality of first rings 4, and when the first rings 4 are close to each other, the rubber pads 8 are squeezed.

[0039] In this embodiment, the end of the mirror core 1 close to the handle 2 is the rear end 12, and the mirror core 1 is sequentially arranged with a front end 11, a bending section 13 and a rear end 12 from front to back, wherein the bending section 13 adopts a hose design, and the mirror tube bending section 13 is made of a shape memory soft composite material, with an outer layer of PEBAX, a middle layer of a stainless steel woven mesh, and an inner layer of PTF. Inside the bending section 13 of the mirror core 1, a plurality of first circular rings 4 are provided, and these first circular rings 4 can slide along a certain sliding range on the bending section 13. Each first circular ring 4 is a truncated cone structure, and they are arranged at intervals along the direction of the mirror core 1. A mounting plate 5 is installed on a first circular ring 4 close to the rear end 12. The first sliding rod 6 and the second sliding rod 7 are slidably arranged in the mirror core 1, one end of the first sliding rod 6 is fixed on the mounting plate 5, and the other end serves as a first control end 61; the second sliding rod 7 also has one end on the mounting plate 5, and the first sliding rod 6 and the second sliding rod 7 are arranged symmetrically along the central axis of the mounting plate 5, and the other end of the second sliding rod 7 is a second control end 71.

[0040] When it is necessary to adjust the angle of the lens core 1 in the joint to better observe different parts, the doctor can operate the first control end 61 or the second control end 71 to make the first slide bar 6 or the second slide bar 7 slide separately. When the first slide bar 6 slides, due to its connection with the mounting plate 5 and the relationship between the mounting plate 5 and the first circular ring 4, it will drive the bending section 13 to bend in the corresponding direction. Similarly, operating the second slide bar 7 will also have the same effect. If it is necessary to straighten the bending section 13, the doctor can synchronously operate the first control end 61 and the second control end 71 to make the first slide bar 6 and the second slide bar 7 slide synchronously, so as to achieve the straightening of the bending section 13, and it will not bend easily after being straightened due to the effect of the first circular ring 4. At the same time, there are several rubber pads 8, which are respectively installed on each first circular ring 4. When the first circular rings 4 are brought closer to each other by operating the slide bar, the rubber pads 8 will be squeezed. After the first slide bar 6 and the second slide bar 7 stop squeezing the first circular ring 4, the rubber pads 8 will drive several first circular rings 4 to reset.

[0041] The coordination of the first slide bar 6, the second slide bar 7, the bending section 13, the first ring 4 and other structures enables the bending section 13 of the mirror core 1 to be flexibly bent or straightened. In arthroscopic surgery, this provides great convenience for doctors, who can easily adjust the angle of the mirror core 1 according to the observation requirements of different parts inside the joint, thereby obtaining a better field of view, more comprehensively observing the lesions inside the joint, and improving the accuracy of diagnosis. The design of the first slide bar 6 and the second slide bar 7 makes the angle adjustment operation simple and easy. The doctor only needs to operate the control end near the handle 2 to control the bending section 13 of the mirror core 1, without the need for complex additional instruments or cumbersome operating steps, reducing the complexity of the surgical operation and improving the surgical efficiency.

[0042] Furthermore, it also includes: a plurality of second circular rings 9, all of which are sleeved outside the lens core 1 and slidably arranged outside the lens core 1, and the plurality of second circular rings 9 are arranged at intervals along the direction of the lens core 1, and adjacent second circular rings 9 form a bending gap 91 near one end of the first slide bar 6, and abut against each other at one end near the second slide bar 7.

[0043] In this embodiment, a plurality of second circular rings 9 are arranged outside the mirror core 1. These second circular rings 9 are all sleeved on the mirror core 1 and can slide along the direction of the mirror core 1. They are arranged at intervals along the direction of the mirror core 1. In adjacent second circular rings 9, a bending gap 91 is formed near one end of the first slide bar 6, and the ends near the second slide bar 7 are in contact with each other. For example, when the first slide bar 6 is slid, a plurality of second circular rings 9 are driven to approach each other, and after approaching, the bending gap 91 is squeezed, so that the bending section 13 is kept at a specific angle after bending. After the second truncated cone is designed, the bending section 13 can only bend in the direction of the bending gap 91. The second circular ring 9 plays a function of guiding bending.

[0044] Furthermore, the other ends of the first slide bar 6 and the second slide bar 7 both have teeth 10, and the other ends of the first slide bar 6 and the second slide bar 7 extend into the handle 2, and also include: a gear 110, which has two gears, both of which are rotatably and slidably arranged in the handle 2. After the gear 110 slides, it is used to engage with the teeth 10. After the gear 110 rotates, it is used to drive the first slide bar 6 and / or the second slide bar 7 to slide.

[0045] In this embodiment, the other ends of the first slide bar 6 and the second slide bar 7 are provided with teeth 10, and the other ends of the two slide bars extend into the handle 2. Two gears 110 are also provided in the handle 2. The two gears 110 are rotatably and slidably arranged in the handle 2. The gears 110 extend out of the handle 2 and can be manually controlled. When it is necessary to adjust the bending of the bending section 13 of the mirror core 1, the doctor can operate the gear 110 to slide until the gear 110 is engaged with the teeth 10 on the first slide bar 6 or the second slide bar 7. When the gear 110 is rotated, due to the cooperation between the gear 110 and the teeth 10, the first slide bar 6 will slide under the drive of the gear 110, and then the bending section 13 of the mirror core 1 will be bent through the linkage with the mounting plate 5, the first ring 4 and other structures. If it is necessary to straighten the bending section 13, the two gears 110 can be engaged with the teeth 10 of the first slide bar 6 and the second slide bar 7 at the same time, and the gear 110 can be rotated in the appropriate direction to make the first slide bar 6 and the second slide bar 7 slide synchronously.

[0046] The matching design of the gear 110 and the teeth 10 on the first slide bar 6 and the second slide bar 7 provides control for the angle adjustment of the bending section 13 of the mirror core 1. The doctor can accurately control the sliding distance and direction of the slide bar by controlling the rotation angle and direction of the gear 110, thereby achieving fine adjustment of the bending angle of the mirror core 1. This method of sliding operation through the gear 110 inside the handle 2 can prevent the doctor from accidentally touching the lens during surgery.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A hemispherical push-pull visual puncture cannula, comprising a lens core (1) and a handle (2), wherein the end of the lens core (1) away from the handle (2) is a front end (11), characterized in that: The front end (11) is a semi-spherical protrusion structure, the front end (11) has a first groove (111), the first groove (111) is a semi-spherical structure, and further comprises: The camera element (3) is arranged in the first groove (111).

2. A hemispherical push-pull visual puncture cannula according to claim 1, characterized in that: The camera element (3) has a lens (31), the lens (31) has a second groove (311), the second groove (311) is a semi-spherical structure, and the first groove (111) is smoothly connected to the second groove (311).

3. A hemispherical push-pull visual puncture cannula according to claim 2, characterized in that: The first groove (111) is arranged obliquely at the front end (11), and the lens (31) is inclined relative to the lens core (1) at an angle ranging from 0 to 70 degrees.

4. A hemispherical push-pull visual puncture cannula according to claim 1, characterized in that: The front end (11) can extend 7 to 8 mm.

5. The hemispherical push-pull visual puncture cannula according to claim 1, characterized in that: The front end (11) has a circular chamfer (112).

6. A hemispherical push-pull visual puncture cannula according to claim 1, characterized in that: The end of the mirror core (1) close to the handle (2) is a rear end (12), and the mirror core (1) comprises a front end (11), a bending section (13) and a rear end (12) arranged in sequence, and the bending section (13) is a hose.

7. A hemispherical push-pull visual puncture cannula according to claim 6, characterized in that: Also includes: A plurality of first circular rings (4), wherein the first circular rings (4) are slidably arranged on the bending section (13) and are located in the lens core (1), wherein the plurality of first circular rings (4) are arranged at intervals along the direction of the lens core (1), and the first circular rings (4) are of a truncated cone structure; A mounting plate (5) disposed on the first circular ring (4) near the rear end (12); A first sliding rod (6) is slidably arranged in the mirror core (1), one end of the first sliding rod (6) is arranged on the mounting plate (5), and the other end is a first control end (61), and the first control end (61) is used to control the sliding of the first sliding rod (6); A second slide bar (7) is slidably arranged in the mirror core (1); one end of the second slide bar (7) is arranged on the mounting plate (5); the first slide bar (6) and the second slide bar (7) are symmetrically arranged along the central axis of the mounting plate (5); the other end of the second slide bar (7) is a second control end (71); the second control end (71) is used to control the sliding of the second slide bar (7); after the first slide bar (6) or the second slide bar (7) slides respectively, the bending section (13) is driven to bend; after the first slide bar (6) and the second slide bar (7) slide synchronously, the bending section (13) is driven to straighten.

8. The hemispherical push-pull visual puncture cannula according to claim 7, characterized in that: Also includes: There are a plurality of rubber pads (8), which are respectively arranged on a plurality of the first circular rings (4). When the first circular rings (4) are brought closer to each other, they squeeze the rubber pads (8).

9. The hemispherical push-pull visual puncture cannula according to claim 7, characterized in that: Also includes: There are a plurality of second circular rings (9), all of which are sleeved outside the mirror core (1) and slidably arranged outside the mirror core (1). The plurality of second circular rings (9) are arranged at intervals along the direction of the mirror core (1). Adjacent second circular rings (9) form a bending gap (91) at one end close to the first slide bar (6), and abut against each other at one end close to the second slide bar (7).

10. The hemispherical push-pull visual puncture cannula according to claim 7, characterized in that: The other ends of the first slide bar (6) and the second slide bar (7) are each provided with teeth (10), and the other ends of the first slide bar (6) and the second slide bar (7) extend into the handle (2), and further comprising: The gears (110) have two gears, both of which are rotatably and slidably arranged in the handle (2); after the gears (110) slide, they are used to mesh with the teeth (10); after the gears (110) rotate, they are used to drive the first slide bar (6) and / or the second slide bar (7) to slide.

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