WO2022107901A1

WO2022107901A1 - Arthroscope

Info

Publication number: WO2022107901A1
Application number: PCT/KR2020/016193
Authority: WO
Inventors: 김동진; 김혜정; 최기영
Original assignee: 해성옵틱스(주)
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2022-05-27

Abstract

The present invention relates to an arthroscope which is capable of quickly and safely capturing images of the inside of a human body, by comprising: a handle unit; a cable unit which is connected to the handle unit and allows transmission of signals; an injection unit which is mounted in the handle unit and allows supply of a fluid; a needle unit which is mounted in the handle unit, connected to the injection unit, and inserted into a human body; a camera unit which is inserted in the needle unit so as to be movable, and extends from the needle unit to capture images of the inside of the human body; and an optical adjustment unit which is mounted on the needle unit, and changes the angle of view of the camera unit by using a refractive optical system.

Description

endoscope for arthroscopy

The present invention relates to an endoscope for a joint, and more particularly, to an endoscope for an articulation capable of examining the inside of a joint, but suppressing the expansion of the incision site, and changing the angle of view by using a refractive optical system.

In general, an endoscope is a kind of optical device, and is largely divided into an industrial endoscope for checking the inside of a narrow space such as a pipe or a ship building, and a medical endoscope for examining the inside of the human body.

A medical endoscope is a device for visually checking and diagnosing the inside of a human body by being directly inserted into the human body and acquiring image information about the surroundings.

On the other hand, unlike in the past when surgery was performed through direct skin incision and joint incision for diseases or injuries of joints, today, surgery can be performed simultaneously with diagnosis using an arthroscopy, a state-of-the-art medical device.

Arthroscopic surgery using a medical endoscope uses a small hole to insert an arthroscope with a special small camera into the joint without incising the affected area, and then observes the inside of the joint through a monitor, etc. Even lesions that cannot be detected even with this method can be accurately diagnosed, and surgery can be performed at the same time.

However, the conventional arthroscope has a problem in that it is difficult to secure a wide field of view because the angle of view of the camera is narrow. Therefore, there is a need to improve it.

The background technology of the present invention is published in Korean Patent Publication No. 2014-0133248 (published on November 19, 2014, title of the invention: multifunctional arthroscopy).

The present invention has been devised to improve the above problems, and it is an object of the present invention to provide an endoscope for a joint capable of inspecting the inside of a joint, but suppressing the expansion of the incision site, and changing the angle of view using a refractive optical system.

The articular endoscope according to the present invention includes: a handle portion; a cable unit connected to the handle unit to transmit a signal; an injection unit mounted on the handle unit to supply a fluid; a needle part mounted on the handle part, connected to the injection part, and inserted into the body; a camera unit inserted into the needle unit and movable, protruding from the needle unit to photograph the inside of the body; and an optical control unit mounted on the needle unit and configured to change the angle of view of the camera unit by applying a refractive optical system.

The handle part includes a handle body part that a user can grip; and a handle cover part that covers the area open to the outside of the handle body part and passes through the injection part.

The cable part is detachably attached to the handle part and connected to the display part.

The needle part includes a needle connection part mounted on the handle part; and a needle tube that penetrates the needle connection part, is inserted into the injection part, and has an inclined end to cut the body.

The camera unit is built into the handle unit and a movable camera holder unit; a camera manipulation unit connected to the camera holder and exposed to the handle unit; a camera tube part mounted on the camera holder part and inserted into the needle part through the injection part; a camera photographing unit mounted to an end of the camera tube; and a camera module unit connected to the camera photographing unit and transmitting a signal.

The optical control unit is mounted on the needle unit, characterized in that at least one of a scattering prism for dispersing light, a reflective prism for reflecting light, and a splitting prism capable of reflecting or transmitting light.

The optical control unit may include a support unit mounted on the needle unit; and an aspherical lens part mounted on the support part and bent to reflect light.

The endoscope for articulation according to the present invention prevents damage to the camera part when the needle part is inserted into the body, because the camera part is moved forward to photograph the inside of the body after the needle part is inserted into the body, and after the needle part is inserted into the body, a wide range without interference with the needle part Filming may take place.

In the endoscope for articulation according to the present invention, the optical control unit is mounted on the needle unit to expand the angle of view of the camera unit.

1 is a diagram schematically showing an endoscope for an articular according to an embodiment of the present invention.

Figure 2 is an exploded perspective view schematically showing an endoscope for a joint according to an embodiment of the present invention.

3 is a cross-sectional view schematically showing an endoscope for an arthropod according to an embodiment of the present invention.

4 is a view schematically showing a handle portion in the articular endoscope according to an embodiment of the present invention.

5 is a view schematically showing a cable part in the endoscope for articulation according to an embodiment of the present invention.

6 is a view schematically showing an injection unit in the endoscope for articulation according to an embodiment of the present invention.

7 is a view schematically showing a needle portion in the endoscope for articulation according to an embodiment of the present invention.

8 is a view schematically showing a camera unit in the endoscope for articulation according to an embodiment of the present invention.

9 is a view schematically showing a reuse prevention unit according to an embodiment of the present invention.

10 is a diagram schematically illustrating a state in which the reuse prevention unit hardware prevents reuse in FIG. 9 .

11 is a view schematically illustrating a state in which the reuse prevention unit prevents reuse through an electrical control signal in FIG. 9 .

12 is a view schematically showing an optical control unit according to a first embodiment of the present invention.

13 is a view schematically showing an optical control unit according to a second embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, an embodiment of the endoscope for articulation according to the present invention will be described. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a diagram schematically showing an arthroscope according to an embodiment of the present invention, FIG. 2 is an exploded perspective view schematically showing an arthroscope according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention It is a cross-sectional view schematically showing an endoscope for an arthrosis according to an embodiment. 1 to 3 , the articular endoscope 1 according to an embodiment of the present invention includes a handle part 10 , a cable part 20 , an injection part 30 , and a needle part 40 . and a camera unit 50 and an optical control unit 90 .

The handle portion 10 has a shape that can be gripped by a user. For example, the handle unit 10 may include a synthetic resin material or a metal material, and may include a plurality of components for processing and transmitting video images captured by the camera unit 50 therein.

The cable unit 20 is connected to the handle unit 10 to transmit a signal. For example, the cable unit 20 may be integrally formed with the handle unit 10 or may be detachably attached to the handle unit 10 , and may transmit image signals and electrical signals.

The injection unit 30 is mounted on the handle unit 10 to supply fluid. For example, the injection unit 30 may supply a saline solution for washing or a medicine for treatment.

The needle unit 40 is mounted on the handle unit 10 , is connected to the injection unit 30 , and is inserted into the body. For example, the needle part 40 protects the inserted camera part 50 and may be made of a metal or alloy material such as stainless steel. In addition, it may include a synthetic resin material having a certain hardness or more for body incision.

The camera unit 50 is inserted into the needle unit 40 to be movable, and protrudes from the needle unit 40 to photograph the inside of the body. For example, the camera unit 50 may be protected by being built into the needle unit 40 when the needle unit 40 is inserted into the body. In addition, the camera unit 50 protrudes from the needle unit 40 after the needle unit 40 is inserted into the body by cutting the skin to photograph the inside of the body.

The optical control unit 90 is mounted on the needle unit 40 , and applies a refractive optical system to change the angle of view of the camera unit 50 . For example, the optical control unit 90 is mounted on the end of the needle unit 40, the camera unit 50 can pass through the optical control unit 90, the angle of view can be amplified.

Accordingly, the user may insert the needle unit 40 into a body part requiring joint treatment and photograph the inside of the body through the camera unit 50 . The articular endoscope 1 is manufactured for one-time use, a separate washing and sterilization process is eliminated, and the used articular endoscope 1 can be disposed of.

4 is a view schematically showing a handle portion in the articular endoscope according to an embodiment of the present invention. Referring to FIG. 4 , the handle unit 10 according to an embodiment of the present invention includes a handle body unit 11 and a handle cover unit 12 .

The handle body 11 has a shape that can be gripped by a user. The handle body part 11 is hook-coupled to a pair and has an empty shape inside, so that the injection part 30 and the camera part 50 can be built-in. For example, the handle body unit 11 may include a handle front end hole 111 having an open front end and a handle manipulating hole 112 having an upper side open for operating the camera 50 .

The handle cover part 12 covers the open area outside the handle body part 11, and the injection part 30 passes therethrough. For example, the handle cover unit 12 may be inserted between the pair of handle body units 11 to cover the handle operation hole unit 112 while maintaining a fixed state. The handle cover part 12 includes a cover case part 121 that covers the handle manipulation hole part 112, a cover manipulation hole part 122 formed in the cover case part 121 and having a hole in the longitudinal direction, and a camera part. One or more cover button hole parts 123 for installing the camera button part 59 for controlling the 50 may be formed. When the camera button unit 59 is operated, the image captured by the camera unit 50 may be captured and stored. More specifically, it is possible to record or store a video as well as one image captured through the camera button unit 59 . That is, if you press the camera button 59 once, an image is captured, if you press it more than once, the video is saved until you release the hand, and if you press it twice or more in a row, it is saved as a video. It can be linked with a function that can save a video.

5 is a view schematically showing a cable part in the endoscope for articulation according to an embodiment of the present invention. Referring to FIG. 5 , the cable unit 20 according to an embodiment of the present invention is detachably attached to the handle unit 10 and connected to the display unit 100 .

For example, at the rear end of the handle unit 10, a handle terminal unit 14 connected to the camera unit 50 and transmitting an image signal and an electric signal may be provided, and the cable unit 20 has one end of the handle terminal unit. It is connected to ( 14 ), and the other end is connected to the display unit 100 such as a notebook computer or a monitor to transmit an image signal and an electric signal. For this reason, the cable part 20 may be excluded from the object of disposal. In addition, since the handle unit 10 and the cable unit 20 are integrally manufactured, the handle unit 10 including the cable unit 20 may be discarded.

6 is a view schematically showing an injection unit in the endoscope for articulation according to an embodiment of the present invention. Referring to FIG. 6 , the injection unit 30 according to an embodiment of the present invention includes an injection body portion 31 , an injection tube portion 32 , an injection injection portion 33 , and an injection watertight portion 34 . include

The injection body part 31 is built into the handle part 10 and is connected to the needle part 40 . For example, the injection body part 31 is built into the handle part 10 and includes a first injection body part 311 having a first injection space part 313 formed therein, and a first injection body part 311 . It may include a second injection body portion 312 extending from the front end, the needle portion 40 is inserted. In this case, the diameter of the second injection space 314 formed inside the second injection body 312 may be smaller than that of the first injection space 313 .

The injection pipe part 32 communicates with the injection body part 31 , passes through the handle part 10 and is exposed to the outside. For example, the injection pipe part 32 may extend from the first injection body part 311 to communicate with the first injection space part 313 . The injection pipe part 32 may be exposed to the outside through the cover through hole part 124 formed in the handle cover part 12 . A screw thread may be formed on the outer circumferential surface of the injection pipe part 32 .

The injection injection unit 33 is screw-coupled to the injection pipe portion 32 and injects the fluid. As an example, the injection injection unit 33 may be screwed to the end of the injection tube portion 32 to maintain a connection relationship. Due to this, when the user operates the handle unit 10, the injection injection unit 33 can be used as a support means.

The injection watertight part 34 is built into the injection body part 31 and is in close contact with the camera part 50 penetrating the injection body part 31 to prevent fluid leakage. For example, the injection watertight part 34 is made of an elastic material, and the first watertight part 341 is in close contact with the inner wall of the first injection space 313 , and the first watertight part 341 to the inside. It may include a second watertight part 342 that protrudes and is in close contact with the camera part 50 . A plurality of main watertight portions 34 may be disposed in the longitudinal direction of the first injection space portion 313 .

7 is a view schematically showing a needle portion in the endoscope for articulation according to an embodiment of the present invention. Referring to FIG. 7 , the needle part 40 according to an embodiment of the present invention includes a needle connection part 41 and a needle tube part 42 .

The needle connection part 41 is fixedly installed by being inserted into the front end of the handle part 10 . As an example, the needle connection part 41 may have a shape in which the outer diameter decreases as it goes toward the front end, and the rear end may be inserted into the handle portion 10 and locked.

The needle tube part 42 passes through the needle connection part 41, is inserted into the injection part 30, and has an inclined end so that the body can be incised. As an example, the needle tube part 42 may be connected to the second injection body part 312 to guide the fluid supplied through the injection tube part 32 .

8 is a view schematically showing a camera unit in the endoscope for articulation according to an embodiment of the present invention. Referring to FIG. 8 , the camera unit 50 according to an embodiment of the present invention includes a camera holder unit 51 , a camera operation unit 52 , a camera tube unit 53 , a camera photographing unit 54 , It includes a camera module unit 55 .

The camera holder unit 51 is built into the handle unit 10 and is movable. As an example, the camera holder unit 51 is formed to be larger than the outer diameter of the first injection body portion 311 to surround the first injection body portion 311 with a first holder portion 511 and a first holder portion ( 511) may include a second holder portion 512 extending rearward. At this time, a hole is formed in the first holder part 511 so that it may not interfere with the injection pipe part 32 during the movement process.

The camera operation unit 52 is connected to the camera holder unit 51 , is exposed to the handle unit 10 , and is operable. For example, the camera operation unit 52 is exposed to the outside and is movable along the cover operation hole 122 , and the first operation unit 521 protrudes from the bottom of the first operation unit 521 and is inserted into the camera holder unit 51 . A second manipulation unit 522 may be included.

The camera tube unit 53 is mounted on the camera holder unit 51 , penetrates the injection unit 30 and is inserted into the needle unit 40 . For example, the camera tube 53 is mounted on the first camera holder portion 51 , passes through the injection watertight portion 34 , and may be inserted into the needle tube portion 42 . At this time, the injection watertight part 34 may be in close contact with the outside of the camera tube part 53 to prevent fluid leakage.

The camera photographing unit 54 is mounted on the end of the camera tube 53 to acquire image information. For example, the camera photographing unit 54 is mounted on the end of the camera tube 53, and as the camera tube 53 moves, it is exposed from the needle tube 42 to take an image. In the camera photographing unit 54 , a lens for capturing an image is disposed in the central portion, and a plurality of optical fibers are disposed around the lens to perform a light source function.

The camera module unit 55 is connected to the camera photographing unit 54 and transmits a signal. For example, the camera module unit 55 may transmit an image signal, an optical signal, an electrical signal, etc. using an optical fiber. For this reason, the camera photographing unit 54 may photograph an image while lighting is turned on, and the photographed image may be transmitted to the display unit 100 through the camera module unit 55 .

An example of the use of the endoscope for arthroscopy according to an embodiment of the present invention having the above configuration will be described as follows.

The user unpacks the disposable endoscope 1 for articulation, connects the cable unit 20 to the display unit 100 , and connects the injection injection unit 33 to the injection tube unit 32 .

In the above state, the user grips the handle unit 10, inserts the needle unit 40 into the body to reach the destination, and then moves the camera unit 50 forward to photograph the inside of the body.

During filming, saline is supplied through the injection and injection unit 33 to wash the camera unit 50 , and, if necessary, a drug may be supplied to perform treatment.

At this time, after the fluid supplied through the injection injection unit 33 reaches the injection body 31 through the injection tube portion 32, it may be discharged through the space between the needle tube portion 42 and the camera tube portion 53. . And, the camera tube 53 and the watertight injection watertight portion 34 close to prevent leakage of the fluid to prevent damage to the camera portion (50).

On the other hand, the endoscope for articulation 1 according to an embodiment of the present invention can be forcibly prevented from being reused by hardware or software. 9 is a diagram schematically showing a reuse prevention unit according to an embodiment of the present invention, 10 is a diagram schematically illustrating a state in which the reuse prevention unit hardware prevents reuse in FIG. 9 , and FIG. 11 is a diagram in FIG. It is a diagram schematically showing a state in which the reuse prevention unit prevents reuse through an electrical control signal. 9 to 11 , the reuse prevention unit 60 may forcibly prevent the reuse of the camera unit 50 in order to prevent patient hygiene and secondary infection.

As a first example, in order to prevent recycling of the camera unit 50 in hardware, the reuse prevention unit 60 may be mounted on the handle unit 10 to limit the reverse movement of the camera unit 50 .

More specifically, the reuse preventing unit 60 may include a first preventing unit 61 , a second preventing unit 62 , and a third preventing unit 63 .

The first prevention part 61 is formed in the camera operation part 52 . For example, the first prevention part 61 may protrude laterally from the camera operation part 52 . The first preventing part 61 may have a right-angled triangular cross-section.

The second prevention part 62 is mounted so as to be insertable into the groove formed in the hand part 10 , and is disposed on the movement path of the first prevention part 61 . The second prevention part 62 limits the backward movement of the first prevention part 61 after the first prevention part 61 passes. For example, the second prevention part 62 includes a second prevention locking part 621 disposed on the movement path of the first prevention part 61 and a handle cover part extending from the second prevention locking part 621 ( 12) may include a second preventing insertion portion 622 inserted into the cover insertion groove portion 129 formed in. In this case, the second preventing locking part 621 may have a right-angled triangular cross-section, and the first preventing part 61 and the inclined surface may face each other.

The third prevention part 63 elastically supports the second prevention part 62 inserted into the hand part 10 . For example, the third prevention portion 63 has a coil spring shape surrounding the second prevention insertion portion 622, and is inserted into the cover insertion groove portion 129 to elastically support the end of the second prevention locking portion 621. can

Therefore, when the camera operation unit 52 moves forward, the second prevention unit 62 caught in the first prevention unit 61 is inserted into the cover insertion groove 129 to allow the movement of the first prevention unit 61 . have. At this time, the camera photographing unit 54 is exposed to the outside to obtain image information about the object.

And, even if the user moves the camera operation unit 52 backward after the acquisition of image information on the object is completed, the first preventing unit 61 and the second preventing stopping unit 621 are in surface contact to maintain the jammed state, Movement of the camera operation unit 52 may be restricted. Accordingly, the user or the target user can recognize whether the camera unit 50 is being used.

On the other hand, the reuse prevention unit 60 may limit whether to use the camera unit 50 by software. That is, the fourth prevention unit 64 is mounted on the camera module unit 55, and can control the operation of the camera module unit 55 to stop when a connection with the display unit 100 is detected for more than a set number of times.

12 is a view schematically showing an optical control unit according to a first embodiment of the present invention. 12 , in the optical control unit 90 according to the first embodiment of the present invention, any one of a dispersion prism 91 , a reflection prism 92 , and a split prism 93 is mounted on the needle unit 40 . do. In addition, two or more of the dispersion prism 91 , the reflection prism 92 , and the dividing prism 93 may be mixed and mounted on the needle unit 40 .

The dispersion prism 91 disperses light. As an example, the dispersion prism 91 may have an isosceles triangular cross-section and a bottom surface mounted on the needle part 40 . In addition, the light irradiated from the camera unit 50 may be dispersed by the dispersion prism 91 to change the angle of view.

The reflective prism 92 reflects light. As an example, the reflective prism 92 has a rectangular cross section, a reflective surface is formed on a straight line with the camera unit 50, and the reflective support unit 921 is mounted on the needle unit 40 while the reflective prism 92 is mounted on the needle unit 40. can be combined with In addition, the light irradiated from the camera unit 50 may be reflected through the reflective prism 92 to change the angle of view.

The dividing prism 93 may reflect or transmit light. For example, two cross-sections having a triangular shape may be combined to form a quadrangular shape. In addition, a portion of the light irradiated from the camera unit 50 is transmitted through the dividing prism 93 and a portion is reflected, so that the angle of view may be changed.

13 is a view schematically showing an optical control unit according to a second embodiment of the present invention. Referring to FIG. 13 , the optical control unit 90 according to the second embodiment of the present invention includes a support unit 95 and an aspherical lens unit 96 .

The support part 95 is mounted on the needle part 40, and the aspherical lens part 96 mounted on the support part 95 has a curved shape to reflect light.

For example, the support part 95 has an isosceles triangle shape in cross section, the bottom is mounted on the needle part 40, and an aspherical lens 96 having a curvature on the side facing the camera part 50 is mounted to change the angle of view. can induce

The support part 95 may be movably mounted on the needle part 40 , and as it moves in conjunction with the camera part 50 , it is possible to secure a view of the camera part 50 and remove foreign substances.

On the other hand, when the optical control unit 90 is deleted, the camera unit 50 may take an image with an angle of view of 120 degrees, which is an inclination angle of 0 degrees. However, since the optical control unit 90 changes the optical path to secure the inclination angle (in the case of the dispersion prism, the inclination angle is secured at 10 to 20 degrees), the rotation angle of view of the camera unit 50 can be secured while maintaining the 120 degree field of view. have.

In addition, the camera photographing unit 54 includes a lens, which is an optical system, and an optical fiber that is a diverging system that is disposed around the lens and functions as a light source. Even if the optical fiber has a narrower angle of view than the lens, the camera unit ( 50) It can cover the angle of view of the lens when rotating.

In addition, the optical control unit 90 may seek to expand the area of the rotation divergence system and to enlarge the viewing angle of the optical system. To this end, the shape of the prism, which is the optical control unit 90 , is divided into a lens area and an optical fiber area, so that the refraction or reflection area may be different in shape.

In the articular endoscope 1 according to an embodiment of the present invention, after the needle unit 40 is inserted into the body, the camera unit 50 is moved forward to photograph the inside of the body, so when the needle unit 40 is inserted into the body Damage to the camera unit 50 is prevented, and after insertion of the needle unit 40 into the body, a wide range of shooting can be performed without interference with the needle unit 40 .

In the articular endoscope 1 according to an embodiment of the present invention, the optical control unit 90 is mounted on the needle unit 40 to expand the angle of view of the camera unit 50 .

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it is understood that various modifications and equivalent other embodiments are possible by those of ordinary skill in the art. will understand Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

Claims

handle part;

a cable unit connected to the handle unit to transmit a signal;

an injection unit mounted on the handle unit to supply a fluid;

a needle part mounted on the handle part, connected to the injection part, and inserted into the body;

a camera unit inserted into the needle unit and movable, protruding from the needle unit to photograph the inside of the body; and

The endoscope for articulation, characterized in that it comprises a; is mounted on the needle unit, the optical adjustment unit for changing the angle of view of the camera unit by applying a refractive optical system.
The method of claim 1, wherein the handle portion

a handle body part that can be gripped by a user; and

and a handle cover part that covers the open area outside the handle body part and through which the injection part passes.
According to claim 1, wherein the cable part

The endoscope for articulation, characterized in that it is detachably attached to the handle part and connected to the display part.
According to claim 1, wherein the needle portion

a needle connection part mounted on the handle part; and

Endoscope for articulation comprising a; needle tube that penetrates the needle connection part, is inserted into the injection part, and has an inclined end to cut the body.
According to claim 1, wherein the camera unit

a camera holder built into the handle and movable;

a camera manipulation unit connected to the camera holder and exposed to the handle unit;

a camera tube part mounted on the camera holder part and inserted into the needle part through the injection part;

a camera photographing unit mounted to an end of the camera tube; and

Endoscope for articulation comprising a; a camera module unit connected to the camera photographing unit and transmitting a signal.
According to claim 1, wherein the optical control unit

Mounted on the needle portion, the articular endoscope, characterized in that any one or more of a dispersion prism for dispersing light, a reflective prism for reflecting light, and a splitting prism capable of reflecting or transmitting light.
According to claim 1, wherein the optical control unit

a support part mounted on the needle part; and

Endoscope for articulation, characterized in that it comprises a; aspherical lens part that is mounted on the support part is bent to reflect light.