Flexible joint lens

Abstract

The utility model discloses a flexible joint lens which comprises a handle part, a lens sheath and a flexible lens, the lens sheath is connected with the handle part, the flexible lens is arranged in the handle part and the lens sheath in a penetrating mode, and a driving motor assembly used for driving the flexible lens to move in the lens sheath and the handle part in the axial direction of the flexible lens is arranged in the handle part. The handle part is provided with a traction controller used for controlling the driving stroke of the driving motor assembly, and the traction controller is electrically connected with the driving motor assembly; the driving motor assembly comprises a transmission gear, and the transmission gear is in contact with the flexible lens. According to the flexible arthroscope, the length of the flexible arthroscope in an articular cavity can be flexibly controlled, the front end part of the flexible arthroscope can reliably move to a focus position, the operation is convenient, and focuses at different positions can be observed.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and in particular relates to a soft arthroscope. Background Art

[0002] Arthroscopy is a rod-shaped optical instrument for observing the internal structure of joints. It is an endoscope used for diagnosing and treating joint diseases. The end of a thin tube is equipped with a lens. When the thin tube is inserted into the joint, the internal structure of the joint will be displayed on the monitor, and the internal structure of the joint can be directly observed, making it easy to locate the joint during the operation and to check the operation status at any time. However, after the arthroscopy is manufactured, the viewing angle is fixed and the observation range is small. During the operation, due to the special anatomical morphology, it is difficult to observe fully. It is necessary to make multiple observation access channels, adjust the observation position of the arthroscopy, or replace the arthroscopy with different observation angles. This will not only prolong the operation time, but also increase the incidence of cross infection due to the replacement of the arthroscopy.

[0003] The soft endoscope and the sheath are combined into an arthroscope, whose front end (observation end) can be bent, the bending angle can be 0-275 degrees, and the viewing angle can be adjusted, which allows the operator to observe the situation in the joint cavity more easily and comprehensively, and improve the accuracy of surgical operations. However, the arthroscope in the existing technology cannot easily achieve axial adjustment of the soft endoscope, and can only observe the situation of a certain lesion in an all-round way. For lesions in multiple different locations, the arthroscope still needs to be replaced, and there are still problems such as long operation time and high risk of infection. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies and defects mentioned in the above background technology and provide an arthroscope whose axial length is easy to adjust.

[0005] In order to solve the above technical problems, the technical solution proposed by the utility model is:

[0006] A soft arthroscope comprises a handle portion, a scope sheath and a soft scope, wherein the scope sheath and the handle portion are connected, the soft scope is inserted into the handle portion and the scope sheath, a driving motor assembly is provided in the handle portion for driving the soft scope to move along its own axial direction in the scope sheath and the handle portion, a traction controller is provided on the handle portion for controlling the driving stroke of the driving motor assembly, and the traction controller is electrically connected to the driving motor assembly; the driving motor assembly comprises a transmission gear, and the transmission gear is in contact with the soft scope.

[0007] In the above-mentioned soft arthroscope, preferably, a microcontroller is also provided in the handle portion, and the traction controller is electrically connected to the drive motor assembly through the microcontroller. In the utility model, the microcontroller is a highly integrated component in the prior art, which can receive a pulse signal of a driving stroke issued when the traction controller rotates quantitatively, and send a pulse signal of a driving stroke to the drive motor assembly to control the driving stroke of the drive motor assembly. The driving stroke of the drive motor assembly is positively correlated with the rotation angle of the traction controller.

[0008] In the above-mentioned soft arthroscope, preferably, the handle portion is also provided with a forward button for controlling the forward drive of the drive motor assembly and a reverse button for controlling the reverse drive of the drive motor assembly, and the forward button and the reverse button are electrically connected to the drive motor assembly through the microcontroller. The forward or reverse rotation of the drive motor assembly can be achieved by the forward button and the reverse button, thereby achieving the advancement or retreat of the soft arthroscope. When the forward button is pressed, the traction controller rotates, and the drive motor assembly rotates forward. When the reverse button is pressed, the traction controller rotates, and the drive motor assembly reverses. The above-mentioned forward button, the reverse button and the microcontroller can all transmit signals through pulse signals. In order to avoid confusion, when the forward button and the reverse button are not pressed, the drive motor assembly does not drive, and when the forward button and the reverse button are both pressed, the drive motor assembly does not drive, that is, the microcontroller does not send a pulse signal to the drive motor assembly to start driving.

[0009] In the above-mentioned soft arthroscopy, preferably, the traction controller is a contact type rotary encoder, a photoelectric encoder or a magnetic encoder for sending a pulse signal to the microcontroller. The above-mentioned contact type rotary encoder, photoelectric encoder or magnetic encoder are all mature components in the prior art. When these encoders are rotated, their pulse signals are transmitted to the built-in microcontroller, and then the microcontroller transmits the pulse signal to the electric drive motor component to control its forward or reverse rotation. The angle of forward or reverse rotation is positively correlated with the angle of rotation of the traction controller.

[0010] In the above-mentioned arthroscope, preferably, the driving motor assembly also includes a reduction motor, and the transmission gear is connected to the reduction motor. After the reduction motor receives the pulse signal of the microcontroller related to the driving stroke, it rotates forward or reversely, thereby driving the transmission gear to rotate. The rotation of the transmission gear can drive the soft mirror to move forward or backward, so as to achieve the purpose of adjusting the length of the soft mirror. The above-mentioned transmission gear can be a high-friction transmission wheel, and its material can be styrene-butadiene rubber, natural rubber, butadiene rubber, isoprene rubber, etc., and the surface has high friction. The friction coefficient of the soft mirror is between 0.3 and 0.6, so that the transmission gear drives the soft mirror to move.

[0011] In the above-mentioned soft arthroscope, preferably, it also includes a gasket for reducing the friction between the soft arthroscope and the handle part, and the gasket is arranged between the soft arthroscope and the handle part. The above-mentioned gasket can be a low-friction gasket, and its material can be polytetrafluoroethylene plastic, nylon, fluorinated ethylene propylene, polyetheretherketone, polyoxymethylene, ultra-high molecular weight polyethylene plastic, etc., and its surface has low friction, and the friction coefficient between the soft arthroscope and it is between 0.01 and 0.2. We have found in practice that the surface of the part where the transmission gear is in direct contact with the soft arthroscope has a certain friction. After applying a certain pressure, the length of the soft arthroscope can be easily adjusted. In order to further facilitate the movement of the soft arthroscope through the transmission gear, the friction between the soft arthroscope and the handle part is reduced by a gasket. In addition, measures can be taken to increase the friction coefficient at the contact point between the soft lens and the transmission gear, such as polishing the bottom of the soft lens that cooperates with the transmission gear to increase friction, or applying a high-friction coating on the bottom of the soft lens that cooperates with the transmission gear to increase friction, such as sandblasting, or adding a rubber sleeve to the part that cooperates with the transmission gear to increase friction.

[0012] In the above-mentioned arthroscope, preferably, it also includes a pressure regulating mechanism for increasing the pressure between the arthroscope and the transmission gear. More preferably, the pressure regulating mechanism is an adjusting screw, and the adjusting screw is rotatably arranged on the handle portion, one end of the adjusting screw is located outside the handle portion, and the other end is located inside the handle portion, and is arranged close to the gasket. The pressure regulating mechanism is used to increase the pressure between the arthroscope and the transmission gear to increase the friction between the transmission gear and the arthroscope, so as to facilitate the transmission gear to drive the arthroscope to move. When the adjusting screw is tightened clockwise, the pressure between the arthroscope and the transmission gear can be increased, and when the adjusting screw is loosened counterclockwise, the pressure between the arthroscope and the transmission gear can be reduced, thereby achieving the adjustment of the friction force.

[0013] In the above-mentioned soft arthroscope, preferably, it also includes a drainage channel and a water inlet channel, and the drainage channel and the water inlet channel are both connected to the scope sheath. The drainage channel and the water inlet channel can cooperate with each other to complete the inflow and outflow of liquid.

[0014] In the above-mentioned soft arthroscope, preferably, the lens of the soft lens is provided with an oleophobic coating. During the use of the soft lens, the surface of the lens may be contaminated with synovial membrane, fat and other tissues, resulting in unclear vision. By coating the surface of the lens with an oleophobic coating, the above phenomenon can be reduced. The use of the oleophobic coating should ensure that it does not affect the observation effect of the lens. The material of the oleophobic coating may include polytetrafluoroethylene, polyvinylidene fluoride, fluorinated ethylene propylene copolymer, etc.

[0015] The arthroscope of the utility model controls the movement of the soft mirror through a traction controller and a driving motor assembly, thereby preventing the soft mirror from being entangled and damaged by entanglement, having a long service life, and not affecting the operational flexibility of the soft mirror.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The arthroscope of the utility model passes through the scope sheath along the axial direction, and the scope is guided by the scope sheath. The handle is provided with a traction controller and a drive motor assembly, which can drive the scope to move along the axial direction to flexibly control the length of the scope in the joint cavity. The front end of the scope can be reliably moved to the lesion position, and lesions at different positions can be observed. Combined with the flexible and bendable characteristics of the scope itself, all-round and blind-angle observation of different lesion positions in the joint can be achieved, improving the accuracy and surgical effect of arthroscope surgery, and avoiding the infection risk caused by replacing the arthroscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 Schematic diagram of the structure of the soft arthroscope in the embodiment.

[0020] Figure 2 This is a schematic diagram of the local structure of the arthroscope after the handle portion is omitted in the embodiment.

[0021] Legend

[0022] 1. Handle; 2. Mirror sheath; 3. Soft mirror; 4. Power cord; 5. Traction controller; 6. Pressure adjustment mechanism; 7. Forward button; 8. Reverse button; 9. Drain channel; 10. Water inlet channel; 11. Reduction motor; 12. Transmission gear; 13. Gasket; 14. Microcontroller. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and carefully below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0024] It should be noted that when an element is described as being "fixed, fixed, connected or connected to" another element, it can be directly fixed, fixed, connected or connected to the other element, or it can be indirectly fixed, fixed, connected or connected to the other element through other intermediate connectors.

[0025] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present utility model.

[0026] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0027] Example:

[0028] like Figure 1 and Figure 2 As shown, the arthroscope of this embodiment includes a handle portion 1, a scope sheath 2 and a soft scope 3, the scope sheath 2 is connected to the handle portion 1, the soft scope 3 is inserted in the handle portion 1 and the scope sheath 2, a driving motor assembly for driving the soft scope 3 to move along its own axial direction in the scope sheath 2 and the handle portion 1 is provided in the handle portion 1, a traction controller 5 for controlling the driving stroke of the driving motor assembly is provided on the handle portion 1, and the traction controller 5 is electrically connected to the driving motor assembly; the driving motor assembly includes a transmission gear 12, and the transmission gear 12 is in contact with the soft scope 3. The power cord 4 is used to supply power to the driving motor assembly.

[0029] In this embodiment, a microcontroller 14 is also provided in the handle portion 1, and the traction controller 5 is electrically connected to the drive motor assembly via the microcontroller 14. The microcontroller 14 is an existing conventional assembly, which can receive the pulse signal sent by the traction controller 5 and send a pulse signal to the reduction motor 11 to control its rotation.

[0030] In this embodiment, the handle portion 1 is also provided with a forward button 7 for controlling the forward drive of the drive motor assembly and a reverse button 8 for controlling the reverse drive of the drive motor assembly. The forward button 7 and the reverse button 8 are electrically connected to the drive motor assembly through the microcontroller 14.

[0031] In this embodiment, the traction controller 5 is a contact type rotary encoder, a photoelectric encoder or a magnetic encoder for sending a pulse signal to the microcontroller 14. The traction controller 5 is an existing conventional component, which sends a pulse signal to the microcontroller 14. In this embodiment, a contact type rotary encoder can be used, and in other embodiments, a photoelectric encoder or a magnetic encoder can also be used.

[0032] In this embodiment, the driving motor assembly further includes a reduction motor 11, and a transmission gear 12 is connected to the reduction motor 11. The transmission gear 12 can be made of a high friction material, such as styrene-butadiene rubber. The reduction motor 11 receives a pulse signal from the microcontroller 14, and drives the transmission gear 12 to rotate, so as to drive the soft mirror 3 to move. The driving stroke is positively correlated with the rotation angle of the traction controller 5, and the driving direction is related to the forward button 7 and the reverse button 8.

[0033] In this embodiment, a gasket 13 for reducing the friction between the soft lens 3 and the handle portion 1 is also included, and the gasket 13 is arranged between the soft lens 3 and the handle portion 1. The gasket 13 can be made of a low-friction material, such as polytetrafluoroethylene. In this embodiment, in order to facilitate the movement of the soft lens 3 by the transmission gear 12, the friction between the soft lens 3 and the handle portion 1 is reduced by adding the gasket 13. Measures to increase the friction can also be taken at the contact position between the soft lens 3 and the transmission gear 12, such as sandblasting, and a sandblasting layer is arranged below the soft lens 3. The gasket 13 can be a semicircular sleeve (such as a bearing shell), which is covered on the upper half of the soft lens 3, and the lower part of the soft lens 3 is directly in contact with the transmission gear 12.

[0034] In this embodiment, a pressure regulating mechanism 6 for increasing the pressure between the soft lens 3 and the transmission gear 12 is further included. Specifically, the pressure regulating mechanism 6 is an adjusting screw, which is rotatably disposed on the handle portion 1, with one end of the adjusting screw located outside the handle portion 1 and the other end located inside the handle portion 1 and disposed close to the gasket 13. The pressure between the soft lens 3 and the transmission gear 12 can be changed by rotating the adjusting screw in the forward direction or in the reverse direction.

[0035] In this embodiment, a drainage channel 9 and a water inlet channel 10 are also included, and both the drainage channel 9 and the water inlet channel 10 are connected to the scope sheath 2. During the operation, the opening and closing of the water inlet channel 10 and the drainage channel 9 controls the inflow and outflow of the liquid in the joint cavity.

[0036] In this embodiment, the lens of the soft lens 3 is provided with an oleophobic coating. In this embodiment, the oleophobic coating can be an ultra-thin fluorinated ethylene propylene copolymer oleophobic coating, which can prevent contamination during use and affect image quality.

[0037] In the arthroscope of this embodiment, the soft endoscope 3 passes through the scope sheath 2 along the axial direction, and the scope sheath 2 is used to guide the soft endoscope 3. The front end of the soft endoscope 3 can be reliably moved to the lesion position. The front end of the soft endoscope 3 is a bending portion that can be bent. The front bending portion is bent to a corresponding angle to observe the corresponding position. It is easy to use, and the specific adjustment method is the existing technology. A traction controller 5 is provided on the handle portion 1. The traction controller 5 can rotate. When the traction controller 5 is manually rotated, the reduction motor 11 drives the transmission gear 12 to rotate, and the soft endoscope 3 and the transmission gear 12 are in direct contact. The transmission gear 12 drives the soft endoscope 3 to move, so as to flexibly control the length of the soft endoscope 3 in the joint cavity.

[0038] The soft endoscope 3 is sandwiched between the gasket 13 and the transmission gear 12, and the friction between the soft endoscope 3 and the latter is greater, and its static friction reaches 20N. When in use, the soft endoscope 3 is moved axially by manipulating the traction controller 5, and the moving direction is controlled by the forward button 7 and the reverse button 8 to flexibly control the length of the soft endoscope 3 in the joint cavity, so as to move the front end of the soft endoscope 3 to different lesion positions, thereby avoiding the increase in the incidence of cross infection of patients by replacing different arthroscopes. Combined with the scope sheath 2, which can externally control the rotation angle along the axis (0-360°) and the bending angle (at least 0-180°) of the bending part of the soft endoscope 3, it can realize the exploration of multiple lesions in the whole joint without dead angles, which is convenient to use, and also shortens the operation time and is efficient.

[0039] In this embodiment, the pressure adjustment mechanism 6 is used to adjust the friction between the transmission gear 12 and the soft mirror 3. Specifically, when the pressure adjustment mechanism 6 is tightened, the pressure between the transmission gear 12 and the soft mirror 3 increases, which is conducive to driving the soft mirror 3 to move through the transmission gear 12.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soft arthroscope, comprising a handle portion (1), a scope sheath (2) and a soft scope (3), wherein the scope sheath (2) and the handle portion (1) are connected, and the soft scope (3) is inserted into the handle portion (1) and the scope sheath (2), characterized in that: A driving motor assembly for driving the soft mirror (3) to move along its own axial direction in the mirror sheath (2) and the handle (1) is arranged in the handle (1), and a traction controller (5) for controlling the driving stroke of the driving motor assembly is arranged on the handle (1), and the traction controller (5) is electrically connected to the driving motor assembly; the driving motor assembly comprises a transmission gear (12), and the transmission gear (12) is in contact with the soft mirror (3).

2. The soft arthroscopy according to claim 1, characterized in that: A microcontroller (14) is also provided in the handle portion (1), and the traction controller (5) is electrically connected to the drive motor assembly via the microcontroller (14).

3. The soft arthroscopy according to claim 2, characterized in that: The handle portion (1) is also provided with a forward button (7) for controlling the forward driving of the drive motor assembly and a reverse button (8) for controlling the reverse driving of the drive motor assembly. The forward button (7) and the reverse button (8) are electrically connected to the drive motor assembly via the microcontroller (14).

4. The soft arthroscopy according to claim 2, characterized in that: The traction controller (5) is a contact type rotary encoder, a photoelectric encoder or a magnetic encoder for sending a pulse signal to the microcontroller (14).

5. The soft arthroscopy according to claim 1, characterized in that: The driving motor assembly further comprises a reduction motor (11), and the transmission gear (12) is connected to the reduction motor (11).

6. The soft arthroscopy according to claim 5, characterized in that: It also comprises a gasket (13) for reducing the friction between the soft mirror (3) and the handle portion (1); the gasket (13) is arranged between the soft mirror (3) and the handle portion (1).

7. The soft arthroscopy according to claim 6, characterized in that: It also includes a pressure regulating mechanism (6) for increasing the pressure between the soft mirror (3) and the transmission gear (12).

8. The soft arthroscopy according to claim 7, characterized in that: The pressure adjustment mechanism (6) is an adjustment screw which is rotatably arranged on the handle portion (1), one end of the adjustment screw being located outside the handle portion (1) and the other end being located inside the handle portion (1) and arranged close to the gasket (13).

9. The soft arthroscopy according to any one of claims 1 to 8, characterized in that: It also comprises a water drainage channel (9) and a water inlet channel (10), wherein the water drainage channel (9) and the water inlet channel (10) are both connected to the mirror sheath (2).

10. The soft arthroscopy according to any one of claims 1 to 8, characterized in that: The lens of the soft lens (3) is provided with an oleophobic coating.

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