CN104873324A - Reverse chopping hook for cataract surgery - Google Patents

Abstract

The present invention provides a kind of reverse chopping hook for cataract surgery, the chopping hook is made of titanium alloy material, includes a hook handle and a hook body connected with the hook handle as an integral structure, the surface of the hook handle is along the There are several longitudinal anti-slip ribs distributed in the axial direction. The rear section of the hook body extends in the axial direction of the hook handle. An arc-shaped hook is formed, and the curvature of the arc-shaped hook increases with the extension of the arc-shaped hook. Both ends of the arc-shaped hook are blunt circle structures. The curved inner side of the arc features a blade. The reverse chopping hook for cataract surgery of the present invention has reasonable structure, safe and convenient operation, firm grip on nucleus, more thorough chopping, and high chopping efficiency. The titanium alloy material has high strength, good corrosion resistance, The advantages of high heat resistance make the hacking hooks reusable after thorough disinfection, which ensures the rational allocation of resources.

Description

A kind of trans chopping hook for cataract surgery

technical field

The invention relates to the field of medical devices, in particular to a trans-chopping hook for cataract surgery.

Background technique

Cataract refers to the turbidity of the lens in the eyeball, which changes from transparent to opaque, preventing light from entering the eye, thereby affecting vision. In the early stage, the turbidity is slight or small and does not affect vision, and then gradually aggravates to significantly affect vision or even blindness. At present, with the development of society, the aging of the population is becoming more and more serious, and the incidence of senile cataract is also increasing. The vision loss caused by cataract cannot be corrected by wearing glasses, and it is difficult to achieve effective therapeutic effects with drug treatment. Only surgery can be the solution. The only effective method for cataracts. Now the most commonly used surgical method is phacoemulsification, which is very simple to operate. During the operation, the doctor will make a small incision of about 2 to 3 mm on the cornea, and then go deep into the device the size of a pen tip to crush and absorb the cloudy lens. After removal, the intraocular lens is implanted through this incision for fixation, and the whole operation process only takes ten minutes. Phacoemulsification has the advantages of small trauma, fast wound healing, mild postoperative reaction and fast visual recovery.

The chopping hook is one of the most important instruments in phacoemulsification. The rationality of the chopping hook design can even directly determine the success or failure of the operation. The patent application document with the application number CN102784031A discloses a superemulsified nuclear chopping hook, including a hook handle and a hook head, wherein the hook head is an arc-shaped structure, and the curved inner side of the arc-shaped hook is a blade, and the arc-shaped hook is semicircular. Arc-shaped, the cross-section of the arc-shaped hook is triangular, and the bottom edge of the triangle is arc-shaped. This hook is easy to operate and easy to grasp. It is more suitable for medical novice operations, ensuring the quality of the operation and avoiding increasing the suffering of patients.

There are following defects usually in the nuclear splitting hook of the prior art:

(1) During the operation, it is necessary to extend the splitting hook from the edge of the annular capsulorhexis to the equator of the lens. Since the hook head of the splitting hook in the prior art is a semicircular structure, it is not easy to extend the hook head during the operation. , resulting in prolongation of operation time and increased suffering of patients;

(2) The capsulorhexis required during the operation is relatively large, and it is difficult to operate in the case of small pupils;

(3) Since some operations are performed under non-direct vision conditions, the disadvantages of intraoperative complications often occur for doctors with little surgical experience.

Therefore, it is a technical problem to be solved by those skilled in the art how to invent a hacking hook for cataract surgery with convenient operation and reasonable structure.

Contents of the invention

The invention provides a reverse chopping hook for cataract surgery, which has reasonable structure, safe and convenient operation, reduces the possibility of intraoperative complications, and has the advantages of high chopping efficiency, reusability, and wide application range.

In order to solve the problems of the technologies described above, the present invention includes the following technical solutions:

A reverse chopping hook for cataract surgery, comprising a hook handle and a hook body connected with the hook handle as an integral structure, the rear section of the hook body extends along the axial direction of the hook handle, and the front section of the hook body is bent upwards as a whole Folding, the end of the front section of the hook body is bent downwards and forms an arc hook by inward bending, the curvature of the arc hook increases with the extension of the arc hook, and a knife edge is provided on the inside of the arc bend of the arc hook.

The anti-chopping hook for cataract surgery of the present invention has reasonable structure, safe and convenient operation, and the curvature of the arc-shaped hook increases from top to bottom, which is beneficial to accurately incarcerate the equatorial part of the patient's lens nucleus, and the nucleus is more firmly grasped. The shaped hook is more slender, which is conducive to the full insertion of the cutting edge of the nucleus-chopping hook into the lens, and the nucleus-chopping is more thorough.

In order to facilitate the operation of novices and improve the cutting efficiency, preferably, the end of the front section of the hook body is bent downward by 40°-60° and formed into an arc-shaped hook by inward bending.

Further, the front section of the hook body and the rear section of the hook body form an angle of 110°-130°. Because the hook handle and the hook body have a certain included angle, the hook handle will not block the operator's field of vision during operation, and it is also convenient for the operator to exert force on the splitting hook.

Further, the bending position of the front section and the rear section of the hook body is at the middle point of the hook body, and the bending position is transitioned through an arc. The arc transition is to prevent the splitting hook from causing damage to other non-surgical parts.

Further, the diameter of the hook body decreases gradually from the root of the rear section to the bend, and the diameter of the hook body remains constant from the bend to the end of the front section. The front section of the hook body is in the shape of a truncated cone as a whole, extending along the axial direction of the hook handle with decreasing diameter, and the diameter of the rear section of the hook body is the same as the minimum diameter of the front section of the hook body. The larger diameter of the force-applying part of the splitting hook is conducive to improving the strength, and the smaller diameter of the splitting part is conducive to improving the accuracy of the operation.

Further, both ends of the arc-shaped hook are of blunt round structure. The setting of the blunt round structure at both ends of the arc-shaped hook effectively reduces the risk of rupture of the patient's posterior capsule during the operation.

Further, the linear distance between the two ends of the arc-shaped hook is 2.2-2.6mm. When the straight-line distance between the two ends of the arc-shaped hook is 2.2-2.6mm, the length of the arc-shaped hook is moderate, and the blade also has a suitable length, which has a better nuclear chopping effect and is also convenient for the arc-shaped hook to be removed from the circular capsulorhexis during surgery. The edge of the mouth extends down to the equator of the lens.

In order to facilitate the operator to exert force on the splitting hook, preferably, the line connecting the two ends of the arc-shaped hook and the rear section of the hook body form an included angle of 90°-110°.

The beneficial effects of the present invention are as follows:

The anti-chopping hook for cataract surgery of the present invention has a reasonable structure and is safe and convenient to operate; the curvature of the arc-shaped hook increases gradually from top to bottom, which is beneficial to accurately incarcerate the equatorial part of the patient's lens nucleus, and the nucleus is more firmly grasped. The shaped hook is more slender, which is conducive to the full insertion of the blade of the chopping hook into the lens, the chopping is more thorough, and the efficiency of chopping is also improved; there is a suitable angle between the hook handle and the hook body, and the hook handle It will not block the operator's field of vision, and at the same time, it is convenient for the operator to exert force on the chopping hook.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a trans chopping hook for cataract surgery according to the present invention.

Fig. 2 is a partially enlarged view of the hook body of the trans-cleavage hook for cataract surgery of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the structure of a trans-chopping hook for cataract surgery in this embodiment. The core splitting hook comprises a hook handle 1 and a hook body 2, and the hook handle 1 and the hook body 2 are connected as an integral structure.

Wherein, the surface of the hook handle 1 is distributed with several longitudinal anti-slip ribs 11 along the axial direction. The setting of the anti-slip ribs 11 is conducive to anti-slip, avoiding the nuclear chopping hook from slipping from the hand during the operation, and improving the safety of the operation.

As shown in Figure 2, the rear section of the hook body 2 extends in the axial direction of the hook handle 1, and the front section of the hook body 2 bends upwards to form an included angle of 110°-130° with the rear section of the hook body 2 (that is, angle a). , the size of the angle a is further preferably 120°. Since the hook handle 1 and the hook body 2 have a certain angle, the hook handle 1 will not block the operator's field of vision during operation, and it is also convenient for the operator to exert force on the splitting hook.

The bending position of the front section of the hook body 2 and the rear section of the hook body 2 is at the midpoint of the hook body 2, and the bending position is transitioned through an arc. Reasonable bending is set to facilitate operation, and the bending between the front section and the rear section of the hook body 2 is transitioned through an arc, which can prevent the splitting hook from causing damage to other non-surgical parts.

The diameter of the hook body 2 decreases gradually from the root of the rear section to the bend, and is basically in the shape of a truncated cone. The diameter of the hook body 2 remains unchanged from the bend to the end of the front section, and the end of the hook body 2 is bent downward by 40° to 60° (i.e. angle b) and form an arc hook 21 by inward bending, the size of the angle b is further preferably 50 °, the arc bending inner side of the arc hook 21 is provided with a blade 211, and the back side of the arc hook 21 is designed as a blunt circle .

Specifically, the connection between the hook body 2 and the hook handle 1 is the force application point of the splitting hook, and the larger diameter here is conducive to improving the strength of the splitting hook. Smaller is beneficial to improve the accuracy of operation. The curvature of the arc-shaped hook 21 increases from top to bottom, which is conducive to accurately incarcerating the equator of the patient's lens nucleus, and the nucleus is more firmly grasped. The entire arc-shaped hook 21 is more slender, which is conducive to the full insertion of the cutting edge 211 In the lens, the nuclei are more thoroughly chopped. In addition, the back of the arc-shaped hook 21 is designed to be blunt, even if the hook is in contact with the posterior capsule, because the point of force is a cross section, rather than a point (common nuclear hook), the pressure is reduced, and the pressure on the posterior capsule is reduced. Membranes are relatively safer.

Both ends of the arc-shaped hook 21 are blunt round structures, which effectively reduce the risk of rupture of the patient's posterior capsule during the operation. The linear distance between the two ends of the arc-shaped hook 21 is 2.2-2.6 mm, more preferably 2.4 mm. When the linear distance between the two ends of the arc hook 21 is 2.4mm, the length of the arc hook 21 is moderate, and the blade 211 also has a suitable length, which has a better splitting effect, and also facilitates the operation of the arc hook 21 from the ring. The edge of the capsulorhexis extends down to the equator of the lens.

The connection line between the two ends of the arc-shaped hook 21 and the rear section of the hook body 2 form an included angle of 90° to 110° (that is, angle c), and the size of the angle c is further preferably 100°. Nuclear hook exerts force.

The trans splitting core hook is made of titanium alloy material. Titanium alloy has the advantages of high strength, good corrosion resistance, and high heat resistance. Before the operation, the hacking hook can be completely and thoroughly disinfected, so that the hacking hook can be reused and the rational allocation of resources is ensured.

To sum up, the anti-chopping hook for cataract surgery in this embodiment has a reasonable structure and is safe and convenient to operate; the curvature of the arc-shaped hook increases from top to bottom, which is conducive to accurately incarcerating the equatorial part of the patient's lens nucleus, grasping The nucleus is firmer, and the entire arc-shaped hook is more slender, which is conducive to the full insertion of the blade of the nucleus chopping hook into the lens, the nucleus chopping is more thorough, and the efficiency of nucleus chopping is also improved; there is a suitable angle between the hook handle and the hook body , the hook handle will not block the operator's field of vision during the operation, and it is also convenient for the operator to apply force to the hook; the titanium alloy material has the advantages of high strength, good corrosion resistance, and high heat resistance, so that the hook can be used after passing through It can be reused after thorough disinfection, which ensures the rational allocation of resources.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, those skilled in the art may make various modifications to the technical solutions of the present invention. and improvements, all should fall within the scope of protection determined by the claims of the present invention.

Claims (8)

1. the trans core splitting hook of cataract operation, comprise the neck of hook (1) and connect as one the coupler body (2) of structure with the described neck of hook (1), it is characterized in that, the back segment of described coupler body (2) extends along the axis of the neck of hook (1), the leading portion entirety of coupler body (2) upwards bends, the end of coupler body (2) leading portion bends downwards and forms arc shaped hook (21) by inflection, the curvature of described arc shaped hook (21) increases progressively along with the extension of arc shaped hook (21), is provided with blade (211) inside the arc-shaped bend of arc shaped hook (21).

2. the trans core splitting hook of cataract operation as claimed in claim 1, it is characterized in that, the end of described coupler body (2) leading portion bends 40 ° ~ 60 ° downwards and forms arc shaped hook (21) by inflection.

3. the trans core splitting hook of cataract operation as claimed in claim 1, it is characterized in that, the leading portion of described coupler body (2) and the back segment of described coupler body (2) are the angle of 110 ° ~ 130 °.

4. the trans core splitting hook of cataract operation as claimed in claim 1, it is characterized in that, the leading portion of described coupler body (2) and the midpoint of bending place in coupler body (2) of back segment, transition is carried out by arc in described bending place.

5. the trans core splitting hook of cataract operation as claimed in claim 3, it is characterized in that, described coupler body (2) is successively decreased to bending place diameter by back segment root, and coupler body (2) is remained unchanged to leading portion end diameter by described bending place.

6. the trans core splitting hook of cataract operation as claimed in claim 4, it is characterized in that, the two ends of described arc shaped hook (21) are blunt round structure.

7. the trans core splitting hook of cataract operation as claimed in claim 5, it is characterized in that, the air line distance at the two ends of described arc shaped hook (21) is 2.2 ~ 2.6mm.

8. the trans core splitting hook of cataract operation as claimed in claim 5, it is characterized in that, the line at the two ends of described arc shaped hook (21) and the leading portion of described coupler body (2) are the angle of 90 ° ~ 110 °.