CN209490167U - A scalpel for cutting trabecular meshwork - Google Patents

Abstract

The utility model relates to the field of medical equipment. At present, trabecular mesh ablation for glaucoma is expensive, and the surgical equipment and disposable consumables are very expensive. At present, there is no scalpel specially used for cutting trabecular mesh. Doctors generally use it when performing trabecular mesh incision. A general straight scalpel cannot completely cut the lesioned trabecular meshwork. For this reason, the utility model provides a kind of scalpel that is used for cutting trabecular meshwork, comprises handle, also comprises arc cutter bar and the blade that is located at the front end of arc cutter bar, and described blade is flat, and described blade It includes an upper blade and a lower blade, the upper blade and the lower blade form a certain angle, and the upper blade and the lower blade are serrated. The structure is simple, easy to use, can accurately cut the trabecular mesh, the scalpel can be reused, the operation effect is almost the same as that of trabecular ablation, and it is not easy to relapse after the operation. It can replace other expensive operations and greatly reduce the operation cost.

Description

A scalpel for cutting trabecular meshwork

technical field

The utility model relates to a medical appliance, in particular to a medical appliance for cutting trabecular mesh.

Background technique

Glaucoma is the world's first irreversible blinding eye disease. Its main hazard is pathological intraocular pressure leading to optic nerve damage and visual field defect. If it is not treated in time and effectively, it will lead to blindness.

The eye is a hollow spherical structure. The contents of the eye include aqueous humor, lens and vitreous body. The aqueous humor is a colorless and transparent liquid, which is a kind of tissue fluid. It fills the anterior and posterior chambers, about 0.15-0.3mL. Effect of intraocular pressure. Aqueous humor is in a dynamic cycle. It is produced by the ciliary process epithelium of the ciliary body, reaches the posterior chamber, enters the anterior chamber through the pupil, and then enters the Schlemm's canal from the anterior chamber angle trabecular network, and then passes through the collecting duct and aqueous humor vein. Finally, it enters the anterior ciliary vein on the surface of the sclera and returns to the blood circulation. Under normal circumstances, the amount of aqueous humor production is equal to the amount of aqueous humor outflow, and the intraocular pressure remains stable. Any obstacle in the circulation of aqueous humor will affect the balance between the production and elimination of aqueous humor, manifested as changes in intraocular pressure. . The vast majority of clinical glaucoma is caused by increased resistance to aqueous humor outflow. Elevated intraocular pressure acts on the cribriform plate to directly compress optic nerve fibers, damaging the optic nerve and its visual pathways and visual function agents, mainly manifested as concave atrophy of the optic disc and visual field The characteristic defect shrinks. Therefore, lowering IOP is a key and effective treatment for glaucoma.

The most commonly used surgical method for glaucoma is filtering surgery for extraocular outflow, including trabeculectomy, which artificially creates a filtering channel to drain aqueous humor to the scleral flap and conjunctival flap to relieve the elevated intraocular pressure. Currently the mainstream of glaucoma filtration surgery. In addition, there are various external drainage operations such as drainage device implantation. The common problem of this type of surgery is the formation of filtering blebs, which destroys the structure and appearance of the ocular surface, and is also prone to various complications, such as severe endophthalmitis and even eyeball enucleation, or the operation fails due to the formation of filtering bleb scars in the operation area .

In recent years, for open-angle glaucoma and congenital glaucoma, various internal drainage operations have been carried out, trying to promote the removal of aqueous humor through internal drainage and reduce intraocular pressure without external drainage and without the formation of filtering blebs, such as trabecular ablation Trabectome, canaloplasty, trabecular micro-bypass stent (iStent, Eyepass, Cypass), etc., but the cost of these operations is very high, and the surgical equipment costs hundreds of thousands to millions of RMB, or surgery The consumables only need 5,000 to 20,000 RMB, and the expensive operation fee is a burden for glaucoma patients.

At present, doctors generally use ordinary flat scalpels to incise the trabecular meshwork. Unlike ordinary tissues, the position of the trabecular meshwork is rather special. It is located within the angle between the iris and the sclera. It is necessary to tilt the ordinary scalpel at a little angle. to cut. And general scalpel can only be cut to trabecular meshwork, trabecular meshwork can not be cut off completely, causes postoperative trabecular meshwork incision to be easy to close again, and makes operation failure, and therapeutic effect is unreliable.

Therefore, a reusable scalpel suitable for cutting the trabecular meshwork was invented to reduce the cost of glaucoma surgery, effectively cut the trabecular meshwork, prevent closure, and make the aqueous humor directly enter the Schlemm's canal and outer canal from the anterior chamber angle. The effusion tube reduces the outflow resistance of aqueous humor and plays a role in lowering intraocular pressure, which is of great significance to those skilled in the art.

Contents of the invention

In order to solve the above-mentioned technical problems, the utility model provides a scalpel for cutting trabecular mesh, which includes a handle and a blade, and also includes an arc-shaped knife rod, the front end of the arc-shaped knife rod is connected to the blade, and the arc-shaped knife rod is connected to the blade. The rear end of the shaped knife rod is connected to the handle; the blade is flat, and the blade includes an upper blade and a lower blade, and the angle y between the upper blade and the lower blade is 10-60°, and the The upper blade and the lower blade are serrated.

The diameter d of the handle is 5-20mm.

The length b of the handle is 40-100mm.

The diameter c of the arc-shaped knife rod is 0.1-2.0mm.

The length a of the arc-shaped knife rod is 30-50 mm.

The radian x of the arc-shaped knife rod is 10-50°.

The surface of the handle is a non-slip surface.

The beneficial effects of the utility model are as follows: it is specially designed for cutting trabecular meshwork for treating glaucoma. In order to adapt to the special position of trabecular meshwork, the knife rod has a certain radian, and the sawtooth on the blade is also conducive to cutting the diseased trabecular meshwork. , the handle on the non-slip surface can enable the doctor to hold the scalpel tightly during the operation. The structure is simple and easy to use, which can improve the efficiency and accuracy of the doctor during the operation; The cost of operation can be greatly reduced; the trabecular mesh can be cut, which can avoid the re-closing of the trabecular mesh, and the success rate of the operation is improved; the utility model is used for cutting the trabecular mesh, and the operation price is low, and its therapeutic effect is comparable to that of other expensive methods. Minimally invasive procedures (such as trabecular ablation) are almost the same, can replace other expensive minimally invasive procedures, and can benefit more glaucoma patients.

Description of drawings

Fig. 1 is a schematic view of the front view of a scalpel for cutting trabecular meshwork.

Fig. 2 is a schematic plan view of a scalpel for cutting trabecular meshwork.

Fig. 3 is a schematic diagram of the blade part structure of a scalpel for cutting trabecular meshwork.

Detailed ways

A kind of scalpel for cutting trabecular meshwork as described in Fig. 1-3, comprises handle 2 and blade 3, also comprises arc-shaped cutter bar 1, and the front end of described arc-shaped cutter bar 1 is connected with described blade 3, The rear end of the arc knife bar 1 is connected to the handle 2; the blade 3 is flat, and the blade 3 includes an upper blade 33 and a lower blade 32, and the upper blade 33 and the lower blade 32 The included angle y is 10-60°, in the figure y is 30°, and the upper blade 33 and the lower blade 32 are serrated.

The diameter d of the handle 2 is 5-20mm, and d is 8mm in the figure.

The length b of the handle 2 is 40-100mm, and b is 60mm in the figure.

The diameter c of the arc-shaped cutter bar 1 is 0.1-2.0 mm, and c is 0.8 mm in the figure.

The length a of the arc-shaped cutter bar 1 is 30-50 mm, and a is 40 mm in the figure.

The radian x of the arc-shaped cutter bar is 10-50°, and x is 30° in the figure.

The surface of the handle 2 is a non-slip surface, which can make it difficult for the doctor to slip off during the operation.

It is specially designed for cutting trabecular mesh in the treatment of glaucoma. In order to adapt to the special position of trabecular mesh, the knife rod has a certain radian, and the serrations on the blade are also conducive to cutting the diseased trabecular mesh. The handle with non-slip surface can make the doctor Hold the scalpel tightly during the operation, the structure is simple, easy to use, and can improve the efficiency and accuracy of the doctor during the operation; the utility model can be reused, reduces the consumables of the operation, and can greatly reduce the cost of the operation; The cutting of trabecular mesh can avoid the re-closing of trabecular mesh and improve the success rate of operation; the utility model is used for cutting of trabecular mesh, and the operation price is low, and its therapeutic effect is comparable to that of other expensive minimally invasive operations (such as trabecular ablation Surgery) is almost the same, can replace other expensive minimally invasive surgery, and can benefit more glaucoma patients.

Claims (7)

1. a kind of for cutting the scalpel of trabecular network, including handle and blade, it is characterised in that: further include arc knife bar, institute The front end for stating arc knife bar connects the blade, and the rear end of the arc knife bar connects the handle；The blade is in flat Shape, the blade include upper knife edge and lower blade, and the angle y of the upper knife edge and the lower blade is 10-60 ゜, the upper slitter Sword and the lower blade are serrated.

2. according to claim 1 a kind of for cutting the scalpel of trabecular network, it is characterised in that: the diameter of the handle D is 5-20mm.

3. according to claim 1 a kind of for cutting the scalpel of trabecular network, it is characterised in that: the length of the handle B is 40-100mm.

4. according to claim 1 a kind of for cutting the scalpel of trabecular network, it is characterised in that: the arc knife bar Diameter c is 0.1-2.0mm.

5. according to claim 1 a kind of for cutting the scalpel of trabecular network, it is characterised in that: the arc knife bar Length a is 30-50mm.

6. according to claim 1 a kind of for cutting the scalpel of trabecular network, it is characterised in that: the arc knife bar Radian x is 10-50 ゜.

7. according to claim 1 a kind of for cutting the scalpel of trabecular network, it is characterised in that: the handle surfaces are Non skid matting.