Visual trabecular incision knife

Abstract

The utility model relates to the technical field of surgical instruments, and discloses a visualized trabecular incision knife which comprises a knife body, a visualized connecting rod, a handle and a data connecting line, the visualized connecting rod further comprises a first rod body and a second rod body which are consistent in extending direction, the outer diameter of the second rod body is smaller than that of the first rod body, and the second rod body is connected with the handle. The second rod body is connected to the outer edge of the lower end of the first rod body, and the handle is coaxially connected to the upper end of the first rod body; the lower end of the second rod body is connected with a cutter body which is bent towards one side of the central axis of the first rod body; a near-focus micro camera facing the cutter body is mounted on the lower end surface of the first rod body; a camera wire harness connected with the near-focus micro camera sequentially penetrates through the hollow first rod body and the handle and is connected with a data connecting wire outside the handle. The visual trabecula incision knife has a visual function, and can effectively solve the problem that an inner path 360-degree trabecula incision operation with small trauma cannot be selected for corneal opacification glaucoma.

Description

TECHNICAL FIELD

[0001] The utility model relates to surgical instruments technical field more specifically, relate to a visual trabeculotomy. BACKGROUND

[0002] Glaucoma is a kind of blinding ophthalmic disease, mainly due to the intraocular pressure rise and lead to optic nerve damage, is the second largest blinding eye disease in the world at present. The control of intraocular pressure is the main strategy of glaucoma treatment, the current domestic widely carried out anti-glaucoma surgery mainly has external drainage surgery (such as trabeculectomy, drainage nail, drainage valve implantation etc.), internal drainage surgery (such as Schlemm tube plasty, trabecular ablation, carbon dioxide laser assisted deep sclerectomy, trabeculotomy etc.), reduce aqueous humor production surgery (such as ciliary body photocoagulation, cryosurgery, endoscopic direct vision ciliary body photocoagulation etc.).

[0003] Primary congenital glaucoma is the main type of childhood glaucoma, also one of the most important children's blinding eye diseases, the blindness rate is extremely high. The most commonly used surgical method in the past is external trabeculotomy and trabeculectomy. And the traditional external trabeculotomy has the disadvantages of unclear incision site, small incision range, etc., thus has limitations. 360 ° trabeculotomy is one of the minimally invasive internal drainage surgeries in recent years, the surgical method is divided into external 360 ° trabeculotomy and internal gonioscopic assisted 360 ° trabeculotomy, at present 360 ° trabeculotomy is the preferred surgical method for congenital glaucoma, and can also be used for various types of open-angle glaucoma. 360 ° internal trabeculotomy is a modified procedure of traditional trabeculotomy, and its effect is better than that of classic conventional external trabeculotomy. In the operation, the inner wall of Schlemm's canal and part of the trabecular meshwork are cut under direct vision by using a gonioscope, a light-emitting microcatheter or a polypropylene suture is accurately inserted into the Schlemm's canal, and a 360 ° through-penetration is realized. Then the inner wall of Schlemm's canal and the trabecular meshwork are cut 360 ° by using the microcatheter or suture, so as to establish a direct aqueous humor outflow channel between the anterior chamber and the fluid collection tube. The key step of successful operation is to accurately identify and cut the trabecular meshwork and Schlemm's canal under the gonioscope, and then the suture or microcatheter can be inserted into the Schlemm's canal.

[0004] However, the 360 ° trabeculotomy assisted by internal gonioscope cannot be selected for open-angle glaucoma with corneal opacity (because the gonioscope cannot help the doctor to observe the detailed situation of the intraocular structure under the condition of corneal opacity), only the external 360 ° trabeculotomy can be selected, and the wound of the external 360 ° trabeculotomy is larger than that of the 360 ° trabeculotomy assisted by the gonioscope, which is not conducive to the recovery in the later period. Therefore, it is particularly important to develop an internal visual cutting knife for corneal opacity. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a visual trabeculotomy knife, this knife can effectively solve the problem that the existing corneal turbidity glaucoma cannot select the internal route 360 degree trabeculotomy with smaller trauma.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A visual trabeculotomy knife, including knife body, visual connecting rod, handle and data connecting line, the visual connecting rod includes the first rod body and the second rod body with the same extension direction, the outer diameter of the second rod body is smaller than the first rod body, and the second rod body is connected to the lower end of the first rod body, and the handle is coaxially connected to the upper end of the first rod body, the lower end of the second rod body is connected to the knife body bent to the first rod body central axis, and the first rod body lower end surface is provided with a close focus miniature camera towards the knife body, the camera wire harness connected with the close focus miniature camera passes through the hollow first rod body and the handle in turn and is connected with the data connecting line outside the handle, and the data connecting line is connected with the image display device through the data connector.

[0008] Preferably, the outer diameter of the first rod body is not greater than 1.8mm, and the length is within 30mm.

[0009] Preferably, the second rod body is a cylindrical rod with the same upper and lower outer diameter or a tapered rod with thick upper and thin lower.

[0010] Preferably, the outer diameter of the second rod body is 0.2-0.5mm, and the length is within 5mm.

[0011] Preferably, the material of the knife body, the visual connecting rod and the handle is medical stainless steel.

[0012] Preferably, the knife body and the visual connecting rod adopt an integrated design, and the visual connecting rod and the handle are welded and fixed by sealing welding process; the close focus miniature camera is sealed and installed on the lower end surface of the first rod body.

[0013] Preferably, the lower end surface of the first rod body is also provided with an illumination indicator lamp arranged around the close focus miniature camera, and the indicator lamp wire harness passes through the hollow first rod body and the handle in turn and is connected with the external data connecting line.

[0014] Preferably, the number of the illumination indicator lamp is one or more, and multiple illumination indicator lamps are arranged around the close focus miniature camera.

[0015] Preferably, the highest temperature of the lamp bead on the illumination indicator lamp is not higher than 36℃ when the lamp bead is always bright.

[0016] Preferably, the cutter body is provided with a cutter tip part at one end away from the second rod body, a cutter back part in the shape of a quarter cone at the side of the cutter body away from the first rod body central axis, a cutter edge part at the side of the cutter body facing the first rod body central axis, and the cutter edge part comprises three cutter edges, the middle cutter edge is formed by cooperation of two oppositely arranged cutter grooves, and the two side cutter edges are symmetrically formed by cooperation of the cutter back part and the corresponding cutter groove at the same side.

[0017] Compared with the prior art, the visual trabeculotomy knife has the following advantages:

[0018] (1) The visual trabeculotomy knife can effectively solve the problems of not being able to see the inside of the existing corneal turbidity open-angle glaucoma and large trauma of the outside surgery, and can directly see the position to be cut in the anterior chamber of the eye, so as to facilitate the doctor to complete the internal 360° trabeculotomy with less trauma.

[0019] (2) The outer diameter of the first rod body and the second rod body, especially the outer diameter of the first rod body, of the visual connection rod is strictly limited, so that the outer diameter of the first rod body is not greater than 1.8 mm, so as to reduce the trauma as much as possible during the operation.

[0020] (3) The cutter back of the cutter body is set in the shape of a quarter cone, that is, an arc shape, so that the trabecular mesh can be accurately cut without damaging other tissues. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0022] Figure 1 It is a whole structure schematic view of the visual trabeculotomy knife of the present application.

[0023] Figure 2 It is a structure schematic view of the cutter body and the visual connection rod in the visual trabeculotomy knife of the present application.

[0024] Figure 3 It is a distribution schematic view of the near-focus miniature camera and the illumination indicator on the lower end surface of the first rod body.

[0025] Figure 4 It is a structure schematic view of the cutter body in the visual trabeculotomy knife of the present application.

[0026] Figure: 1-blade body, 11-blade tip, 12-blade back, 13-blade edge, 14-blade slot, 2-visualization connecting rod, 21-first rod body, 22-second rod body, 3-handle, 4-data connection line, 5-near-focus miniature camera, 6-illumination indicator light. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the present application, it is understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] Embodiment:

[0031] The present embodiment provides a visual trabeculotomy knife, which has a visual function that can effectively solve the problem of not being able to see the existing corneal turbidity open-angle glaucoma internal surgery and the problem of large trauma of external surgery.

[0032] Specifically, as Figures 1-4As shown, the visual trabeculotome includes a knife body 1, a visual connecting rod 2, a handle 3, and a data connection line 4. The visual connecting rod 2 includes a first rod body 21 and a second rod body 22 extending in the same direction. The second rod body 22 has an outer diameter smaller than that of the first rod body 21, and is connected to the outer edge of the lower end of the first rod body 21. The handle 3 is coaxially connected to the upper end of the first rod body 21. The lower end of the second rod body 22 is connected to the knife body 1 which is bent to one side of the central axis of the first rod body 21. A close-focus miniature camera 5 is installed on the lower end face of the first rod body 21 and faces the knife body 1. The camera wire bundle connected to the close-focus miniature camera 5 passes through the hollow first rod body 21 and the handle 3 in sequence, and is connected to the data connection line 4 outside the handle 3. The data connection line 4 is connected to an image display device such as a high-definition display through a data connector.

[0033] When the visual trabeculotome in the embodiment is used for surgical operation, the second rod body 22 connecting the knife body 1 and the lower end of the first rod body 21 in the visual connecting rod 2 can enter the eye together with the knife body 1. Thus, the close-focus miniature camera 5 which also enters the eye can enable the doctor to directly observe the position to be cut in the anterior chamber of the eye, and thus complete the internal 360° trabeculotomy with less trauma efficiently and with high quality.

[0034] The visual trabeculotome in the embodiment can be used by the doctor alone to complete the operation, or can be used in cooperation with an auxiliary internal gonioscope to enable the doctor to more accurately find the operation position through multiple image perspectives, so as to complete the operation more efficiently and with high quality.

[0035] In further specific embodiments, the outer diameter of the first rod body 21 is not greater than 1.8 mm, and the length is within 30 mm. Since the lower part of the structure of the first rod body 21 needs to enter the eye, the outer diameter thereof cannot be too large so as to reduce trauma as much as possible during the operation. The length of the first rod body 21 is adjusted and designed according to the actual use requirements of people.

[0036] In further specific embodiments, the second rod body 22 is a cylindrical rod with the same outer diameter from top to bottom or a tapered rod with a large upper diameter and a small lower diameter. The second rod body 22 is designed to gradually taper from top to bottom, which can facilitate the corresponding surgical operation of the knife body 1 in the eye, and can also ensure the firm connection between the second rod body 22 and the first rod body 21, so as to avoid bending or breaking at the connection.

[0037] Meanwhile, the outer diameter of the second rod body 22 ranges from 0.2 mm to 0.5 mm, and the length is within 5 mm. During the operation, the second rod body as a whole needs to extend into the eye, and thus the length cannot be too long, otherwise it is impossible to ensure that the close-focus miniature camera 5 reaches a suitable shooting position.

[0038] In further embodiments, the material of the blade body 1, the visual connecting rod 2 and the handle 3 is medical stainless steel. In addition, the blade body 1 and the visual connecting rod 2 are designed in one piece to reduce the welding seam and improve the effect of the operation. The visual connecting rod 2 and the handle 3 are welded and fixed by sealing welding process. The handle 3 is a cylinder with embossed patterns on the outer surface to improve the friction between the hand and the handle 3. The near-focus miniature camera 5 is sealed and installed on the lower end surface of the first rod body 21.

[0039] In further embodiments, the lower end surface of the first rod body 21 is also provided with an illumination indicator lamp 6 around the near-focus miniature camera 5. The indicator lamp wire harness passes through the hollow first rod body 21 and the handle 3 in turn and is connected with the external data connection line 4.

[0040] In this embodiment, the camera wire harness and the indicator lamp wire harness are both sealed through the upper end of the handle 3. The setting of the illumination indicator lamp 6 can compensate for insufficient light so that the near-focus miniature camera 5 can work normally and shoot clearer and more detailed high-quality pictures.

[0041] Furthermore, the number of illumination indicator lamps is one or more, which is determined by the thickness of the first rod body. If the first rod body is thick, multiple illumination indicator lamps can be set. If the first rod body is thin, only one illumination indicator lamp can be set.

[0042] In specific embodiments, as shown in Figure 2 , Figure 3 , multiple illumination indicator lamps 6 are arranged around the near-focus miniature camera 5.

[0043] At the same time, the maximum temperature of the lamp beads on the illumination indicator lamp 6 when they are always on is not higher than 36℃ to prevent the lamp beads from burning the intraocular tissues during the operation.

[0044] In further embodiments, as shown in Figure 4 , the end of the blade body away from the second rod body 22 is the blade tip 11. The side of the blade body away from the central axis of the first rod body is the blade back 12 in the shape of a quarter cone. The side of the blade body facing the central axis of the first rod body is provided with a blade edge 13, which includes three blade edges. The middle blade edge is formed by the cooperation of two oppositely arranged blade grooves 14. The two blade edges on the sides are symmetrical and are formed by the cooperation of the blade back 12 and the corresponding blade groove 14 on the same side.

[0045] In this embodiment, the blade back of the blade body 1 is set in the shape of a quarter cone, i.e. a circular arc, which can accurately cut the trabecular meshwork without damaging other tissues. The three blade edges on the blade body 1 can facilitate the operation of cutting and achieve good cutting effect.

[0046] The various embodiments described in this specification are implemented in a progressive manner, each embodiment focusing on the differences from other embodiments, and the same or similar parts between embodiments can be mutually referred to. For the apparatus disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0047] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those of ordinary skill in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A visual trabecular cutting tool, characterized in that, The device includes a blade body, a visualization connecting rod, a handle, and a data connection cable. The visualization connecting rod further comprises a first rod and a second rod extending in the same direction. The outer diameter of the second rod is smaller than that of the first rod, and the second rod is connected to the lower outer edge of the first rod. The handle is coaxially connected to the upper end of the first rod. The lower end of the second rod is connected to the blade body, which bends towards the central axis of the first rod. A near-focus miniature camera facing the blade body is mounted on the lower end surface of the first rod. A camera cable connected to the near-focus miniature camera passes sequentially through the hollow first rod and the handle, and is connected to the data connection cable outside the handle. The data connection cable is connected to an image display device via a data connector.

2. The visual trabecular cutting tool according to claim 1, characterized in that, The outer diameter of the first rod is no greater than 1.8 mm, and its length is within 30 mm.

3. The visual trabecular cutting tool according to claim 2, characterized in that, The second rod is a cylindrical rod with the same outer diameter at the top and bottom, or a tapered rod that is thicker at the top and thinner at the bottom.

4. The visual trabecular cutting tool according to claim 3, characterized in that, The outer diameter of the second rod is in the range of 0.2 to 0.5 mm, and its length is within 5 mm.

5. The visual trabecular cutting tool according to claim 1, characterized in that, The blade, the visual connecting rod, and the handle are all made of medical-grade stainless steel.

6. The visual trabecular cutting tool according to claim 5, characterized in that, The blade body and the visualization connecting rod are designed as a single unit, and the visualization connecting rod and the handle are welded together using a sealing welding process; the near-focus miniature camera is sealed and installed on the lower end face of the first rod body.

7. The visual trabecular cutting tool according to claim 1, characterized in that, An indicator light is also installed on the lower end face of the first rod, which is located around the near-focus miniature camera. The indicator light harness passes through the hollow first rod and the handle in sequence, and is connected to the external data connection cable.

8. The visual trabecular cutting tool according to claim 7, characterized in that, The number of the lighting indicator lights is one or more, and the multiple lighting indicator lights are arranged around the near-focus miniature camera.

9. The visual trabecular cutting tool according to claim 8, characterized in that, The maximum temperature of the LED beads on the lighting indicator when they are constantly lit does not exceed 36°C.

10. The visual trabecular cutting tool according to any one of claims 1-9, characterized in that, The end of the blade away from the second rod is the tip. The side of the blade facing away from the central axis of the first rod is a quarter-cone shaped back. The side of the blade facing the central axis of the first rod has a cutting edge, which includes three blades. The middle blade is formed by two oppositely arranged grooves. The two blades on the sides are symmetrical and are formed by the back of the blade and the corresponding groove on the same side.

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