CN105125257B - Dacryocystorhinostomy scissors - Google Patents

Abstract

The invention discloses a dacryocystorhinostomy scissors, which comprises a first knife body and a second knife body which are cross-hinged, the handle of the first knife body is provided with a first finger ring, and the handle of the second knife body is provided with a second Ring, the head of the first blade is provided with a first blade point that bends toward the head of the second blade body, the head of the second blade body is provided with a second blade point, and the second blade point is The bending direction of the blade is the same as that of the first knife tip, and the invention has the advantages of simple structure, convenient use, and the ability to smoothly enter the operation position and perform cutting accurately.

Description

Dacryocystorhinostomy scissors

technical field

The invention relates to medical auxiliary equipment, in particular to a dacryocystorhinostomy scissors, which are mainly used for making regular lacrimal sac flaps and nasal mucous membrane flaps during the dacryocystorhinostomy operation for easy anastomosis.

Background technique

In the dacryocystorhinostomy for chronic dacryocystitis, the lacrimal fossa is separated to expose the lacrimal sac, and a bone window is opened at the lacrimal fossa to expose the nasal mucosa. The operator needs to cut the side wall of the lacrimal sac and the nasal mucosa. Connect the lacrimal sac cavity with the nasal cavity, thereby opening up a new lacrimal drainage channel. Due to the very narrow space of the surgical site, resulting in a small visual range and a small range of movement of the scissors, it is very difficult for conventional surgical scissors to enter the surgical site and perform cutting at the surgical site.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a nasal lacrimal anastomosis scissors with simple structure, convenient use, and the ability to smoothly enter the operation site for cutting.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a dacryocystorhinostomy scissors, comprising a cross-hinged first blade and a second blade, the handle of the first blade is provided with a first ring, the first blade The shanks of the two blades are provided with a second finger ring, the head of the first blade is provided with a first tip that bends toward the head of the second blade, and the head of the second blade is provided with a second The tip of the knife, the bending direction of the second tip is the same as the bending direction of the first tip.

As a further improvement of the above technical solution:

The length of the first tip is d ₁ , the length of the second tip is d ₂ , and d ₁ >d ₂ .

d ₁ =1.1d ₂ to 1.2d ₂ .

The bending angle of the first knife tip is β ₁ , 25°≤β ₁ ≤35°, and the bending angle of the second knife tip is β ₂ , 25°≤β ₂ ≤35°.

Compared with the prior art, the present invention has the advantages that: the dacryocystorhinostomy scissors disclosed in the present invention, its first blade point and second blade point are respectively bent relative to the first blade body and the second blade body, which can avoid blocking and make The scissors can more easily enter the surgical site and cut.

Further, the first tip and the second tip are one long and one short, which refines the overall size of the head of the scissors, making it easier for the scissors to enter the operation site and cut open in the narrow lacrimal sac or nasal cavity, making the operation easier. Accurate and efficient. When using it, you can first use the longer first knife tip to pierce the lacrimal sac or nasal mucosa, and then use the occlusal shearing effect of the first knife tip and the second knife tip to cut open the lacrimal sac and nasal mucosa smoothly. The cut lacrimal sac flap and nasal mucosa can be anastomosed smoothly.

Description of drawings

Fig. 1 is a schematic structural view of the nasal lacrimal sac anastomosis scissors of the present invention.

Each label among the figure represents: 1, the first knife body; 11, the first finger ring; 12, the first knife point; 2, the second knife body; 21, the second finger ring; 22, the second knife point.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 shows an embodiment of the dacryocystorhinostomy scissors of the present invention, the dacryocystorhinostomy scissors of the present embodiment, comprises the first blade 1 and the second blade 2 of cross hinge, the handle of the first blade 1 is provided with A first finger ring 11 is arranged, and the handle of the second blade body 2 is provided with a second finger ring 21, and the head of the first blade body 1 is provided with a first knife tip 12 bent near the head direction of the second blade body 2, and the second blade body 2. The head is provided with a second knife point 22, and the bending direction of the second knife point 22 is the same as that of the first knife point 12. In this embodiment, the first knife point 12 is located on the left side of the second knife point 22. Both the first knife tip 12 and the second knife tip 22 are bent to the right side, so that the scissors can enter the operation site more smoothly to perform cutting without being blocked.

The length of the first knife tip 12 is d ₁ , the length of the second knife tip 22 is d ₂ , d ₁ >d ₂ , the first knife tip 12 and the second knife tip 22 are long and the second knife tip 22 is long and short, which refines the head of the scissors The overall size of the scissors is convenient for the scissors to enter the operation site and cut in the narrow lacrimal sac or nasal cavity, making the operation more accurate and efficient; Nasal mucosa, then use the occlusal shearing effect of the first knife point 12 and the second knife point 22 to cut open the lacrimal sac and nasal mucosa smoothly, and the cut lacrimal sac flap and nasal mucosa can be anastomosed smoothly. In this embodiment, d ₁ =1.2d ₂ , in other embodiments, d ₁ can also be appropriately reduced, but should not be less than 1.1 times of d ₂ .

The bending angle of the first knife edge 12 is β ₁ , 25°≤β ₁ ≤35°, the bending angle of the second knife edge 22 is β ₂ , 25°≤β ₂ ≤35°, in this embodiment, β ₁ and _β2 are both 30°, in other embodiments, the bending angle can be adjusted appropriately according to the difference between patients.

The use method of the dacryocystorhinostomy scissors of this embodiment: the operator stands on the affected side of the patient, the thumb is placed in the second finger ring 21, the ring finger is placed in the first finger ring 11, the first knife point 12 and the second knife point 22. Perpendicular to the lacrimal sac flap or nasal mucosa flap, open the scissors, the first tip 12 penetrates into the lacrimal sac or nasal mucosa, and then use the shearing and occlusal action of the first tip 12 and the second tip 22 to cut and make Lacrimal and nasal mucosal flaps.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims (3)

1. A dacryocystorhinostomy scissors, comprising a cross-hinged first blade (1) and a second blade (2), the handle of the first blade (1) is provided with a first ring (11), the The handle of the second blade (2) is provided with a second finger ring (21), which is characterized in that: the head of the first blade (1) is provided with a bending direction close to the head of the second blade (2) The first knife point (12), the first knife point (12) is used to pierce the lacrimal sac or nasal mucosa before cutting open the lacrimal sac and nasal mucosa, and the head of the second knife body (2) is equipped with a second The tip (22), the bending direction of the second tip (22) is the same as the bending direction of the first tip (12); the first tip (12) is V-shaped as a whole and the The length of the first knife edge (12) is d1, the length of the second knife edge (22) is d2, and d1>d2. 2. The dacryocystorhinostomy scissors according to claim 1, characterized in that: d ₁ =1.1d ₂ to 1.2d ₂ . 3. The dacryocystorhinostomy scissors according to claim 1 or 2, characterized in that: the bending angle of the first tip (12) is β ₁ , 25°≤β ₁ ≤35°, the second The bending angle of the second knife point (22) is β ₂ , 25°≤β ₂ ≤35°.