Integrated knife for separating and cutting chamber corner

Abstract

The utility model discloses a chamber corner separating and cutting integrated knife, which comprises a handle, a knife handle, a knife handle and a knife handle, a cutter body is formed at the tail end of the cutter bar; the cutter body comprises a connecting section, a flat blade section and a cutter tip; one end of the connecting section is connected with the cutter bar, and the other end forms the flat blade section; the flat blade section is formed by combining two blades parallel to each other in the length direction, and the tail ends of the blades incline upwards and intersect to form a blade tip. The cutting edges are formed on the connecting section and connected in a circular arc transition mode. The anterior chamber angle cutting device is simple in structure and convenient to operate, chamber angle separation can be completed through the flat blade section in an anterior chamber under an anterior chamber angle mirror or an endoscope, then the knife point on the front portion of the flat blade section penetrates into a trabecular mesh and the inner wall of a Schlemm tube, and the chamber angle is cut in the moving direction of the Schlemm tube. The anterior chamber is only required to enter and exit once during operation, surgical instruments do not need to be replaced, the treatment effect is good, and the cost performance is higher.

Description

Technical Field

[0001] The utility model relates to the field of ophthalmic surgical instruments, in particular to a goniotomy and incision integrated knife. Background Art

[0002] Glaucoma is the leading irreversible cause of blindness. Angle-closure glaucoma is a common type of glaucoma caused by the closure of the anterior chamber angle of the eye, which obstructs the drainage of aqueous humor. For eyes with a short period of angle closure, the angle can reopen with appropriate treatment (including medication or goniolysis surgery), allowing for smooth drainage of aqueous humor. However, severe or prolonged angle closure can further damage the trabecular meshwork of the anterior chamber angle. Even after the angle reopens, further surgery, including goniotomy or trabeculectomy, may be required to promote normal drainage of aqueous humor.

[0003] With the widespread development of minimally invasive glaucoma surgery, goniolysis combined with goniotomy has increasingly demonstrated its advantages in the treatment of angle-closure glaucoma. This procedure is a type of internal drainage surgery for glaucoma. Compared with traditional trabeculectomy, it has the characteristics of simple operation, less damage, and rapid recovery. It also does not rely on filtering blebs and avoids complications related to filtering blebs. However, this type of surgery currently requires multiple entries and exits of the narrow anterior chamber space under a microscope, and the use of two different surgical instruments for related operations. The operation is relatively time-consuming and prone to damage to intraocular tissues. In addition, this procedure requires the configuration of surgical instruments suitable for goniolysis and incision respectively. Currently, there are no surgical instruments in clinical practice that can simultaneously meet the needs of goniolysis and incision. Utility Model Content

[0004] The present invention aims to at least partially address one of the technical problems of the aforementioned techniques. To this end, the present invention aims to provide a goniotomy and incision knife that is simple in structure, easy to operate, and capable of complete trabeculectomy under gonioscopy or endoscopic transendoscopy, while minimizing damage to the outer wall of the Schlemm's canal and the opening of the collecting duct, thereby preventing scarring and surgical failure.

[0005] To achieve the above objectives, the present invention provides an integrated goniotomy and incision knife, comprising:

[0006] Handle: A blade rod is provided at one end; Blade rod: The end forms the blade body; Blade body: Includes a connecting section, a flat blade section and a blade tip; One end of the connecting section is connected to the blade rod, and the other end forms a flat blade section; The flat blade section is composed of two blades that are parallel to each other along the length direction, and the blades are tilted upward and intersect at the end to form a blade tip; The blade is formed in the connecting section, and the two blades are connected by an arc-shaped transition.

[0007] The integrated goniotomy and incision knife according to the present invention has a simple structure and is easy to operate. It can be performed in the anterior chamber under a gonioscopic or endoscopic approach using the flat blade segment to first perform goniotomy. The blade tip at the front of the flat blade segment then penetrates the trabecular meshwork and the inner wall of the Schlemm's canal, incising the goniotomy along the path of the Schlemm's canal. The procedure requires only a single entry and exit into the anterior chamber, without the need to change surgical instruments. The treatment is effective and cost-effective.

[0008] In addition, the goniotomy and incision knife according to the above embodiment of the present invention may also have the following additional technical features:

[0009] Optionally, the handle has a gripping portion and a handle connecting portion, the gripping portion surface is provided with anti-slip stripes or granular protrusions, the handle connecting portion is conical, and the handle connecting portion is connected to the knife rod; the handle is an integrally molded structure, and the handle is made of plastic material.

[0010] Furthermore, the handle has a length of 5-15 cm and a diameter of 0.5-2 cm.

[0011] Optionally, the length of the knife rod is 10-30 mm, and the diameter of the knife rod is 0.5-2 mm.

[0012] Optionally, the shank is cylindrical.

[0013] Optionally, the cross section of the blade body is an isosceles triangle with two blades as waists.

[0014] Optionally, the length of the two blades is 1.5-2 mm, and the distance between the two blades in the flat blade section is 0.2-1 mm.

[0015] Optionally, the arc length of the blade tip is 0.5-2 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural perspective diagram according to an embodiment of the present utility model;

[0017] Figure 2 A partially enlarged view of an embodiment of the present invention;

[0018] Figure 3 The blade body according to one embodiment of the present invention is detailed Figure 1 ;

[0019] Figure 4 The blade body according to one embodiment of the present invention is detailed Figure 2 .

[0020] Description of labels:

[0021] Handle 1; grip portion 11; handle connecting portion 12;

[0022] Tool bar 2;

[0023] Blade body 3; blade tip 31; flat blade section 32; connecting section 33. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The utility model has a simple structure and is easy to operate. Under gonioscopy or endoscopy, the flat blade segment can be used to first separate the chamber angle in the anterior chamber. The blade tip at the front of the flat blade segment then penetrates the trabecular meshwork and the inner wall of the Schlemm's canal, opening the chamber angle along the path of the Schlemm's canal. The procedure requires only one entry and exit of the anterior chamber, and there is no need to change surgical instruments. The treatment is effective and cost-effective.

[0026] To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Figures 1 to 4 A goniotomy and incision knife according to an embodiment of the present invention comprises:

[0029] A handle 1, with a knife bar 2 at one end;

[0030] In some embodiments, the handle 1 comprises a gripping portion 11 and a handle connecting portion 12. The gripping portion 11 is provided with anti-slip stripes or granular projections to prevent slipping. The handle connecting portion 12 is conical and connected to the shank 2. The handle 1 is an integrally molded structure made of plastic, which reduces the weight of the tool. Furthermore, the handle 1 can be 5-15 cm long and 0.5-2 cm in diameter, suitable for most surgical grips.

[0031] A knife bar 2, the end of which forms a knife body 3;

[0032] Specifically, the blade rod 2 has a length of 10-30 mm and a diameter of 0.5-2 mm. This size range is suitable for ophthalmic surgery. Optionally, the blade rod 2 is cylindrical. This is done to minimize damage to the surrounding non-surgical soft tissue during surgery while ensuring the necessary structural strength and reducing manufacturing difficulty.

[0033] The blade body 3 comprises a connecting section 33, a flat blade section 32 and a blade tip 31. One solution for the cross section of the blade body 3 is to set it as an isosceles triangle with two blades as waists, but the corners of the triangle need to be chamfered.

[0034] The cutter body 3 is an integrally formed structure, which is manufactured through processes such as cutting, heat treatment and polishing. The cutter body 3 and the cutter bar 2 can be manufactured separately and then assembled, or the two can be integrally formed.

[0035] One end of the connecting section 33 is connected to the blade shank 2, and the other end forms a flat blade section 32. Flat blade section 32 is composed of two parallel blades along its length. The blades tilt upward and intersect at the ends, forming a blade tip 31. The blades are formed in the connecting section 33 and connected by an arc-shaped transition. Specifically, the two blades are 1.5-2 mm long, and the spacing between the two blades in flat blade section 32 is 0.2-1 mm. This spacing range is adapted to the width of the trabecular meshwork in the human eye.

[0036] In some embodiments, there is an arc-shaped transition from the blade edge to the blade tip 31 , and the arc length of the blade tip 31 is 0.5-2 mm.

[0037] In the embodiment of the present invention, different parts are used to perform the operation according to different stages of the operation: the flat blade section 32 is used to first complete the chamber angle separation in the anterior chamber, and then the blade tip 31 at the front of the flat blade section 32 is used to penetrate the trabecular meshwork and the inner wall of the Schlemm's canal, and the chamber angle is cut along the direction of the Schlemm's canal.

[0038] Specifically, the two connected flat blade sections 32 of the blade body 3 can perform angle separation parallel to the iris surface; the slightly tilted blade tip 31 can easily penetrate the trabecular meshwork and the inner wall of the Schlemm's canal of the human eye; and the back of the blade body 3 can be set with a curvature that matches the curvature of the Schlemm's canal, so that the blade body 3 can slide horizontally within the Schlemm's canal to cut the angle.

[0039] When using the embodiment of the present invention, the therapeutic effect of separating and opening the chamber angle is basically consistent with the effect achieved by other methods that require the combined use of multiple instruments. Therefore, the cost of using the embodiment of the present invention is low and the cost performance is high. In addition, the present invention has a simple structure and is easy to operate. A one-time chamber angle separation and opening operation can be performed under a gonioscope or endoscope. The aqueous humor can directly enter the Schlemm's canal and the collecting duct from the anterior chamber angle, reducing the resistance to aqueous humor outflow and playing a role in lowering intraocular pressure.

[0040] In addition to being applicable to angle-closure glaucoma cases requiring combined goniolysis and goniotomy, the embodiments of the present invention can also be applied to angle-closure glaucoma cases requiring only goniolysis, or to open-angle glaucoma cases requiring only goniotomy.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A goniotomy and incision knife, characterized by: include Handle: one end is provided with a knife bar; Tool bar: The end forms the tool body; Blade body: including connecting section, flat edge section and blade tip; One end of the connecting section is connected to the knife rod, and the other end forms the flat blade section; the flat blade section is composed of two blades that are parallel to each other along the length direction, and the blades are inclined upward and intersect at the ends to form a blade tip; the blade is formed in the connecting section, and the two blades are connected by an arc-shaped transition; The cross section of the blade body is an isosceles triangle with two blades as waists; The length of the two blades is 1.5-2 mm, and the distance between the two blades in the flat blade section is 0.2-1 mm.

2. The goniotomy and incision combined knife according to claim 1, characterized in that: The handle has a gripping portion and a handle connecting portion. The surface of the gripping portion is provided with anti-slip stripes or granular protrusions. The handle connecting portion is conical and is connected to the knife rod. The handle is an integrally formed structure and is made of plastic.

3. The goniotomy and incision combined knife according to claim 2, characterized in that: The handle has a length of 5-15 cm and a diameter of 0.5-2 cm.

4. The goniotomy and incision combined knife according to claim 1, characterized in that: The length of the knife rod is 10-30 mm, and the diameter of the knife rod is 0.5-2 mm.

5. The goniolysis and incision integrated knife according to claim 1, characterized in that: The knife rod is cylindrical.

6. The goniolysis and incision integrated knife according to claim 1, characterized in that: The arc length of the knife tip is 0.5-2 mm.

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