Ophthalmic sclera tunnel knife

Abstract

The utility model discloses an ophthalmology sclera tunnel knife, which relates to the technical field of medical cutting tools and comprises a supporting component, a cutting component, a cutting component and a cutting component, and is characterized in that the supporting component is used for supporting the whole sclera tunnel knife and assisting surgical operation; the movable assemblies are located on the two sides of the exterior of the supporting assembly and movably connected with the supporting assembly; the support assembly includes a handle. The knife has two ends, a superficial sclera flap can be conveniently manufactured at one end, a sclera tunnel incision can be directly manufactured at the original position where the superficial sclera flap needs to be manufactured at the other end, an operator can conveniently select an operation mode, the handle is provided with the holding groove, and the included angle is formed between the knife handle and the knife point at the front end, so that the knife accords with ergonomics and body mechanics, and is better in holding and force exerting; scales are arranged on the arc-shaped structure of the arc-shaped tunnel section, so that an operator can conveniently master the tunnel length; the radius of the sector where the arc length is located is 12 mm. The hemisphere of the normal eyeball of the human body is about 12mm, and the arc-shaped structure is matched with the spherical structure of the eyeball, so that an operator can conveniently master the tunnel depth.

Description

Technical Field

[0001] The utility model relates to the technical field of medical knives, in particular to an ophthalmic scleral tunnel knife. Background Art

[0002] Glaucoma drainage valve implantation is a surgery that implants an artificially designed drainage device under the fascial sac to drain aqueous humor and reduce intraocular pressure. The drainage device is generally composed of a drainage tube and a drainage disc. The drainage tube (outer diameter 0.635mm) is implanted in the anterior chamber or posterior chamber, and the aqueous humor is directly drained to the fascial sac around the drainage disc implanted about 10mm away from the corneal limbus through a diffusion device, so as to achieve the effect of draining aqueous humor and reducing intraocular pressure. During the operation, the drainage disc needs to be sutured and fixed on the shallow sclera about 10mm away from the corneal limbus, and the front end of the drainage tube will use a No. 7 injection needle to make a scleral flap about 4mm away from the corneal limbus, or directly make a shallow scleral tunnel about 4mm long to enter the anterior chamber or posterior chamber to drain the aqueous humor. In the existing technology, if a covering drainage tube is made A superficial scleral flap (generally about 8×3 mm in size) can easily cause secondary damage to the patient's eyes and may cause complications in making a scleral flap (such as flap perforation, breakage, cutting through the eyeball, leakage of aqueous humor, etc.); it is also possible not to make a superficial scleral flap during surgery and directly use allogeneic sclera, pericardium, dura mater and other materials to cover the drainage tube, but there are limitations such as the antigenicity, high price and difficulty in obtaining the covering materials. Therefore, the current technology of directly using a needle to puncture an autologous superficial scleral tunnel to puncture the drainage tube into the anterior chamber or posterior chamber is often used. However, the No. 7 needle tube commonly used for puncture is straight, has no scale, does not fit the arc shape of the sclera, has no fulcrum, is difficult to operate, and is easy to squeeze the eyeball. The puncture depth and length are difficult to control, and the learning curve is long. Utility Model Content

[0003] The utility model aims to provide an ophthalmic scleral tunnel knife in order to solve the problems that the No. 7 needle tube commonly used for puncture is straight, has no scale, does not fit the arc shape of the sclera, has no fulcrum, is difficult to operate, easily squeezes the eyeball, the puncture depth and length are difficult to control, and has a long learning curve.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an ophthalmic scleral tunnel knife, comprising:

[0005] Support components;

[0006] The movable components are located on both sides of the outside of the supporting component and are movably connected to the supporting component;

[0007] The supporting component includes a handle, and multiple groups of external threads are evenly arranged on both sides of the outside of the handle. A first knife handle and a second knife handle are respectively arranged on both sides of the handle. An arc-shaped knife tip is arranged on the side of the first knife handle away from the handle, and multiple groups of scale scales are evenly arranged on the arc-shaped knife tip. A second conical knife tip is arranged on the side of the second knife handle away from the handle. The movable component includes two movable rings. The two groups of movable rings are respectively located on both sides of the outside of the handle, and multiple groups of grooves are evenly arranged on the outside of the two groups of movable rings.

[0008] As a further solution of the utility model: the interiors of the two groups of movable rings are evenly provided with multiple groups of internal threads matching the external threads, and the movable rings are movably connected with the handle threads through the mutual cooperation of the external threads and the internal threads.

[0009] As a further solution of the present invention: the second conical blade tip is a quadrangular pyramid structure, and 1-2 blades are arranged on the second conical blade tip.

[0010] As a further solution of the utility model: the angle between the arc-shaped knife tip and the first knife handle is 110°-130°.

[0011] As a further solution of the present invention: the angle between the second conical tool tip and the second tool handle is 110°-130°.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Through the support component and the movable component, when in use, the knife has two ends, one end can conveniently make a shallow scleral flap, and the other end can directly make a scleral tunnel incision at the position where the shallow scleral flap is originally needed, which is convenient for the surgeon to choose the surgical method. There is a gripping groove on the handle, and there is an angle between the handle and the front end of the knife tip, which conforms to ergonomics and human mechanics, and is better for gripping and exerting force. There is a scale on the arc structure of the arc tunnel section, which is convenient for the surgeon to grasp the tunnel length; the radius of the sector where the arc length is located is 12mm; the hemisphere of a normal human eyeball is about 12mm, and the arc structure is adapted to the spherical structure of the eyeball, which is convenient for the surgeon to grasp the tunnel depth. The whole set of knives is easy to use and easy to master, which simplifies the surgical operation process and is conducive to postoperative recovery;

[0014] 2. By setting up a movable component, using internal and external threads, it is easy to adjust the position of the movable ring 201 located outside the handle 101, so as to facilitate the use of the operator, improve the feel of use, and thus increase the utilization rate to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the utility model;

[0017] Figure 3 For the utility model Figure 1 A is an enlarged view of the middle image.

[0018] In the figure: 1. Support assembly; 101. Handle; 102. External thread; 103. First handle; 104. First conical tip; 105. Scale; 106. Second handle; 107. Second conical tip; 2. Movable assembly; 201. Movable ring; 202. Groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following is an explanation of the embodiments of the present utility model based on the overall structure of the present utility model.

[0021] See also Figures 1 to 3 In an embodiment of the utility model, an ophthalmic scleral tunnel knife comprises:

[0022] Support assembly 1;

[0023] The movable components 2 are located on both sides of the outside of the supporting component 1 and are movably connected to the supporting component 1;

[0024] The support component 1 includes a handle 101, and multiple groups of external threads 102 are evenly arranged on both sides of the outside of the handle 101. A first handle 103 and a second handle 106 are respectively arranged on both sides of the handle 101. The first handle 103 is provided with an arc-shaped knife tip 104 on the side away from the handle 101, and multiple groups of scale scales 105 are evenly arranged on the arc-shaped knife tip 104. The second handle 106 is provided with a second conical knife tip 107 on the side away from the handle 101. The movable component 2 includes movable rings 201. The number of the movable rings 201 is two groups. The two groups of movable rings 201 are respectively located on both sides of the outside of the handle 101, and multiple groups of grooves 202 are evenly arranged on the outside of the two groups of movable rings 201. There are grooves 202 on both sides of the front end of the handle 101 for holding, which fits the fingers. The back of the handle 101 can be placed just at the base of the thumb, which is ergonomic. An auxiliary holding device is mounted on the handle 101 and is made of silicone, which is more comfortable to hold and not easy to slip.

[0025] In this embodiment, the arc-shaped blade tip 104 has scales on it, is about 4 mm long, and is slightly sharp, which is convenient for puncture; the outer diameter of the puncture head is about 0.63 mm, which is equivalent to the thickness of a No. 6 injection needle, and the second conical blade tip 107 is blunt.

[0026] In this embodiment, the interiors of the two sets of movable rings 201 are evenly provided with multiple sets of internal threads matching the external threads 102 , and the movable rings 201 are threadably connected to the handle 101 through the mutual cooperation of the external threads 102 and the internal threads.

[0027] Please refer to Figure 1 and 2 The second conical knife tip 107 is a quadrangular pyramid structure, and is provided with 1-2 blades, which can be used for making and analyzing a superficial scleral flap.

[0028] In this embodiment, the angle between the arc-shaped blade tip 104 and the first blade handle 103 is 110°.

[0029] -130°, preferably 115°.

[0030] In this embodiment, the included angle between the second conical tool tip 107 and the second tool handle 106 is 110°-130°, preferably 125°.

[0031] It is worth noting that according to the feedback from doctors on site, the angle between the arc-shaped blade tip 104 and the first blade handle 103 is preferably smaller than the angle between the second conical blade tip 107 and the second blade handle 106, which is more convenient for performing delicate surgery on site. Therefore, the applicant set the two angles to 115° and 125° respectively.

[0032] The working principle of the utility model is as follows: when in use, the knife has two ends, one end can conveniently make a shallow scleral flap, and the other end can directly make a scleral tunnel incision at the position where the shallow scleral flap is originally needed, so that the surgeon can choose the surgical method conveniently, and the handle 101 is provided with a gripping groove 202, and the knife handle and the front end knife tip have a certain angle, which conforms to ergonomics and human mechanics, and is better for gripping and exerting force, and the arc structure of the arc tunnel section has a scale on it, so that the surgeon can grasp the tunnel length conveniently; the radius of the sector where the arc length is located is 12mm; the hemisphere of a normal human eyeball is about 12mm, and the arc structure is adapted to the spherical structure of the eyeball, so that the surgeon can grasp the tunnel depth conveniently, the whole set of knives is convenient to use, easy to master, simplifies the surgical operation process, and is conducive to postoperative recovery, and through the provided movable component, the position of the movable ring 201 located outside the handle 101 is conveniently adjusted by using the internal thread and the external thread, so as to facilitate the use of the surgeon, improve the hand feel of use, and thus improve the utilization rate to a certain extent.

[0033] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ophthalmic scleral tunnel knife, characterized in that: include: Support assembly (1); Movable components (2) are located on both sides of the outside of the support component (1) and are movably connected to the support component (1); The support component (1) comprises a handle (101), and a plurality of groups of external threads (102) are evenly arranged on both sides of the outside of the handle (101); a first handle (103) and a second handle (106) are evenly arranged on both sides of the handle (101); a curved knife tip (104) is arranged on the side of the first handle (103) away from the handle (101), and a plurality of groups of scale scales (105) are evenly arranged on the curved knife tip (104); a second conical knife tip (107) is arranged on the side of the second handle (106) away from the handle (101); and the movable component (2) comprises two movable rings (201), and the two groups of movable rings (201) are respectively located on both sides of the outside of the handle (101); and a plurality of groups of grooves (202) are evenly arranged on the outside of the two groups of movable rings (201).

2. An ophthalmic scleral tunnel knife according to claim 1, characterized in that: The interiors of the two sets of movable rings (201) are evenly provided with multiple sets of internal threads matching the external threads (102), and the movable rings (201) are movably connected to the handle (101) through the mutual cooperation of the external threads (102) and the internal threads.

3. The ophthalmic scleral tunnel knife according to claim 1, characterized in that: The second conical blade tip (107) is a quadrangular pyramid structure, and one to two blades are arranged on the second conical blade tip (107).

4. The ophthalmic scleral tunnel knife according to claim 3, characterized in that: The included angle between the arc-shaped knife tip (104) and the first knife handle (103) is 110°-130°.

5. An ophthalmic scleral tunnel knife according to claim 3 or 4, characterized in that: The included angle between the second conical tool tip (107) and the second tool handle (106) is 110°-130°.

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