WO2016198028A1 - 一种白内障手术用反式劈核钩 - Google Patents

一种白内障手术用反式劈核钩 Download PDF

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Publication number
WO2016198028A1
WO2016198028A1 PCT/CN2016/094425 CN2016094425W WO2016198028A1 WO 2016198028 A1 WO2016198028 A1 WO 2016198028A1 CN 2016094425 W CN2016094425 W CN 2016094425W WO 2016198028 A1 WO2016198028 A1 WO 2016198028A1
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Prior art keywords
hook
curved
nucleus
cataract surgery
hook body
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PCT/CN2016/094425
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English (en)
French (fr)
Inventor
赵阳
朱思泉
杨珂
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首都医科大学附属北京同仁医院
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Publication of WO2016198028A1 publication Critical patent/WO2016198028A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery

Definitions

  • the invention relates to the field of medical instruments, in particular to a trans-nuclear hook for cataract surgery.
  • Cataract refers to the opacity of the lens in the eyeball, which changes from transparent to opaque, hinders light from entering the eye, thereby affecting vision. Early opacity or a small range does not affect vision, and then gradually increases to significantly affect vision or even blindness. At present, with the development of society, the population is becoming more and more aging, and the incidence of senile cataract is increasing. The reduction of vision caused by cataract cannot be corrected by wearing glasses, and it is difficult to obtain effective therapeutic effects by drug treatment. Only through surgery is the solution. The only effective way of cataract. The most common surgical procedure now is phacoemulsification, which is very simple to operate.
  • Phacoemulsification has the advantages of small trauma, rapid wound healing, light postoperative reaction and rapid vision recovery.
  • the nucleus hook is one of the most important instruments in phacoemulsification.
  • the rationality of the nucleus hook design can directly determine the success or failure of the operation.
  • the patent application file of the application No. CN102784031A discloses a super emulsified nucleus hook, which comprises a stalk and a hook head, wherein the hook head has an arc shape, and the curved curved inner side of the curved hook is a blade edge, and the curved hook is semicircular.
  • the arc-shaped, curved hook has a triangular cross section, and the bottom edge of the triangle is curved.
  • the nucleus hook is easy to operate and easy to grasp, and is more suitable for medical novice operation, ensuring the quality of surgery and avoiding the increase of patient suffering.
  • the invention provides a trans-nuclear hook for cataract surgery, has a reasonable structure, is safe and convenient to operate, reduces the possibility of occurrence of intraoperative complications, and has the advantages of high efficiency, reusable, and wide use range.
  • the present invention includes the following technical solutions:
  • a trans-nuclear hook for cataract surgery includes a hook handle and a hook body integrally connected with the hook handle, 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 upward as a whole Folding, the end of the front section of the hook body is bent downward and forms an arcuate hook by the inner bend, the curvature of the curved hook increases with the extension of the arcuate hook, and the curved curved inner side of the curved hook is provided with a cutting edge.
  • the trans-nuclear hook for cataract surgery of the invention has reasonable structure, safe and convenient operation, and the curved hook has an increasing curvature from top to bottom, which is favorable for accurately embedding the equatorial part of the lens nucleus of the patient, and the grasping core is more firm, the whole arc
  • the hook is more slender, which facilitates the full insertion of the blade of the nucleus hook into the lens, and the nucleus is more thorough.
  • the end portion of the front portion of the hook body is bent downward by 40° to 60° and the curved hook is formed by the inner bend.
  • the front section of the hook body and the rear section of the hook body are at an angle of 110° to 130°. Since the hook handle and the hook body have a certain angle, the hook handle does not block the operator's field of view during the operation, and it is also convenient for the operator to apply force to the heel core hook.
  • the bending of the front and rear sections of the hook body is at a midpoint of the hook body, and the bending portion is transitioned by an arc.
  • the curved transition prevents the nucleus hook from causing damage to other non-surgical parts.
  • the hook body is reduced in diameter from the root of the rear section to the bend, and the diameter of the hook body from the bend to the end of the front section remains unchanged.
  • the front section of the hook body has a truncated cone shape, extends along the axial direction of the stalk and decreases in 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 nucleus of the nucleus hook is beneficial to increase the strength, and the smaller diameter at the nucleus is advantageous for improving the precision of the operation.
  • both ends of the curved hook are obtuse circular structures.
  • the arrangement of the blunt ends of the curved hooks effectively reduces the risk of posterior capsule rupture in the patient during surgery.
  • the linear distance between the two ends of the curved hook is 2.2 to 2.6 mm.
  • the straight line distance between the two ends of the curved hook is 2.2 ⁇ 2.6mm, the length of the curved hook is moderate, and the cutting edge also has a suitable length, which has better nucleus effect, and also facilitates the operation of cutting the curved hook from the annular capsular
  • the edge of the mouth extends below the equator of the lens.
  • the connecting line of the two ends of the curved hook is at an angle of 90° to 110° with the rear portion of the hook body.
  • the trans-nuclear hook for cataract surgery of the invention has reasonable structure and safe and convenient operation; the curved hook has an increasing curvature from top to bottom, which is favorable for accurately embedding the equator of the lens nucleus of the patient, and the grasping core is more firm, the whole arc
  • the hook is more slender, which facilitates the full insertion of the blade of the nucleus hook into the lens, the nucleus of the nucleus is more thorough, and the efficiency of the nucleus is improved; the angle between the stalk and the hook body is appropriate, and the shank is operated during operation. It does not block the operator's view, but also facilitates the operator to apply force to the nucleus hook.
  • FIG. 1 is a schematic view showing the structure of a trans-nuclear hook for cataract surgery according to the present invention.
  • FIG. 2 is a partial enlarged view of the hook body of the trans-nuclear hook for cataract surgery of the present invention.
  • FIG. 1 is a schematic structural view of a trans-nuclear hook for cataract surgery according to the present embodiment.
  • the nucleus hook includes a shank 1 and a hook body 2, and the stalk 1 and the hook body 2 are connected in a unitary structure.
  • the surface of the stalk 1 is axially distributed with a plurality of longitudinal anti-slip ribs 11 , and the anti-slip ribs 11 are arranged to facilitate the anti-slip, so as to prevent the nucleus hook from slipping from the hand during the operation, thereby improving the safety of the operation.
  • the rear section of the hook body 2 extends in the axial direction of the hook shank 1, and the front section of the hook body 2 is bent upwardly at an angle of 110° to 130° with the rear section of the hook body 2 (ie, the 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 does not block the operator's field of view during the operation, and also facilitates the operator to apply force to the heel core hook.
  • the bend 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 bend is transitioned by the arc.
  • the reasonable bending position is convenient for the operation, and the bending between the front and the back of the hook body 2 is transformed by the arc, which can prevent the nucleus hook from causing damage to other non-surgical parts.
  • the hook body 2 is reduced in diameter from the root of the rear section to the bend, and is substantially in the shape of a truncated cone.
  • the diameter of the hook body 2 from the bend to the end of the front section remains unchanged, and the end of the hook body 2 is bent downward by 40° to 60°. (i.e., angle b) and forming an arcuate hook 21 by inward bending, the angle b is further preferably 50°, and the arcuate curved inner side of the arcuate hook 21 is provided with a blade 211, and the back surface of the arcuate hook 21 is designed to be obtusely rounded. .
  • the joint between the hook body 2 and the stalk 1 is the urging force of the nucleus hook, where the diameter is larger to improve the strength of the nucleus hook, and the diameter of the nucleus at the front of the hook 2 is bent. Smaller to improve the accuracy of the operation.
  • the curved hook 21 is increased in curvature from top to bottom, which is favorable for accurately inserting the equatorial portion of the lens core of the patient, and the grasping core is more firm, and the entire curved hook 21 is more elongated, which facilitates the full insertion of the blade 211 of the nucleus hook. In the lens, the nucleus is more thorough.
  • the back surface of the curved hook 21 is designed to be blunt-shaped, even if the nucleus hook is in contact with the posterior capsule, since the force point is a cross section, instead of a point (common nucleus hook), the pressure is reduced, and the posterior capsule is The membrane is relatively safer.
  • Both ends of the curved hook 21 are obtuse circular structures, and the arrangement of the blunt circular structure effectively reduces the risk of rupture of the posterior capsule of the patient during the operation.
  • the linear distance between both ends of the curved hook 21 is 2.2 to 2.6 mm, and more preferably 2.4. Mm.
  • the length of the curved hook 21 is moderate, and the cutting edge 211 also has a suitable length, which has a better nucleus effect, and also facilitates the arc-shaped hook 21 from the ring during surgery.
  • the edge of the capsulord extends into the equator of the lens.
  • the connecting line of the two ends of the curved hook 21 is at an angle of 90° to 110° with the rear portion of the hook body 2 (ie, the angle c), and the angle c is further preferably 100°, and the reasonable angle is favorable for the operator. Nuclear hook force.
  • the trans-nuclear hook is made of a titanium alloy material. Due to its high strength, good corrosion resistance and high heat resistance, titanium alloy can completely and completely sterilize the nucleus hook before surgery, so that the nucleus hook can be reused to ensure the rational allocation of resources.
  • the trans-heavy nucleus hook for cataract surgery of the present embodiment has a reasonable structure and is safe and convenient to operate;
  • the curved hook has an increasing curvature from top to bottom, which is favorable for accurately embedding the equator of the patient's lens nucleus.
  • the core is more firm, and the entire curved hook is more slender, which facilitates the full insertion of the blade of the nucleus hook into the lens body, the nucleus of the nucleus is more thorough, and the efficiency of the nucleus is improved; the angle between the shank and the hook body is suitable.
  • the shank does not block the operator's field of view during the operation, and it is also convenient for the operator to apply force to the nucleus hook;
  • the titanium alloy has the advantages of high strength, good corrosion resistance and high heat resistance, so that the nucleus hook is passed. It can be reused after thorough disinfection, ensuring the rational allocation of resources.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

一种白内障手术用反式劈核钩，该劈核钩由钛合金材料制成，包括钩柄（1）以及与所述钩柄（1）连接为一体结构的钩体（2），所述钩柄（1）的表面沿轴向分布有若干道纵向防滑棱（11），所述钩体（2）的后段沿钩柄（1）的轴向延伸，钩体的前段整体向上弯折，所述钩体（2）的前段端部向下弯折并通过内弯形成弧形钩（21），所述弧形钩（21）的曲率随着弧形钩（21）的延伸递增，弧形钩（21）的两端均为钝圆结构，弧形钩（21）的两端的直线距离为2.2〜2.6讓，弧形钩（21）的弧形弯曲内侧设有刀刃（211）。该白内障手术用反式劈核钩，结构合理，操作安全方便，抓核牢固，劈核更为彻底，具有较高的劈核效率，钛合金材质具有强度高、耐蚀性好、耐热性高等优点，使得劈核钩在经过彻底消毒后可以重复使用，保证了资源的合理配置。

Description

一种白内障手术用反式劈核钩 技术领域
本发明涉及医疗器械领域，尤其涉及一种白内障手术用反式劈核钩。
 背景技术
白内障指眼球内的晶状体发生混浊、由透明变成不透明，阻碍光线进入眼内，从而影响视力，早期混浊轻微或范围较小时不影响视力，而后逐渐加重至明显影响视力甚至失明。目前随着社会的发展，人口老龄化日益严重，老年性白内障的发病也日益增多，白内障引起的视力下降无法通过配带眼镜矫正，药物治疗也难以取得有效的治疗效果，只有通过手术才是解决白内障唯一有效的方法。现在最常用的手术方式是超声乳化手术，这种手术操作起来十分简单，手术时医生会在角膜上开一个2至3毫米左右的小切口，然后深入笔尖大小的设备将浑浊的晶状体粉碎并吸除，再通过这个切口植入人工晶体进行固定，整个手术过程只需十几分钟。超声乳化手术具有创伤小、伤口愈合快、术后反应轻及视力恢复快等优点。
劈核钩是超声乳化手术中最重要的器具之一，劈核钩设计的合理与否甚至能够直接决定手术的成败。申请号为CN102784031A的专利申请文件中公开了一种超生乳化劈核钩，包括钩柄和钩头，其中钩头为弧形构，弧形钩的弧形弯曲内侧为刀刃，弧形钩呈半圆弧状，弧形钩的横截面呈三角形，三角形底边呈弧形，该劈核钩操作方便，便于掌握，更加适合医疗新手操作，保证了手术质量，避免增加患者疾苦。
 技术问题
现有技术中的劈核钩通常存在以下缺陷：
（1）手术时用需要将劈核钩从环形撕囊口边缘下伸入至晶状体赤道部，由于现有技术中劈核钩的钩头为半圆形结构，手术时钩头不便于伸入，造成手术时间的延长，增加病人的痛苦；
（2）手术过程中要求的撕囊口较大，在小瞳孔情况下操作困难；
（3）由于一些操作是在非直视条件下进行，对于手术经验少的医生，常会发生术中并发症的弊端。
因此，如何发明一种操作方便、结构合理的白内障手术用劈核钩是本领域技术人员有待解决的技术难题。
 发明内容
本发明提供了一种白内障手术用反式劈核钩，结构合理，操作安全方便，降低了发生术中并发症的可能性，同时具有劈核效率高、可重复使用、使用范围广等优点。
为解决上述技术问题，本发明包括以下的技术方案：
一种白内障手术用反式劈核钩，包括钩柄以及与所述钩柄连接为一体结构的钩体，所述钩体的后段沿钩柄的轴向延伸，钩体的前段整体向上弯折，钩体前段的端部向下弯折并通过内弯形成弧形钩，所述弧形钩的曲率随着弧形钩的延伸递增，弧形钩的弧形弯曲内侧设有刀刃。
本发明的白内障手术用反式劈核钩，结构合理，操作安全方便,弧形钩由上至下曲率递增，有利于准确的嵌顿住患者晶状体核的赤道部，抓核更加牢固，整个弧形钩更为细长，有利于劈核钩的刀刃充分插入晶状体内，劈核更为彻底。
为方便新手操作，提高劈核效率，优选地，所述钩体前段的端部向下弯折40°~60°并通过内弯形成弧形钩。
进一步地，所述钩体的前段与所述钩体的后段呈110°~130°的夹角。由于钩柄和钩体具有一定的夹角，手术操作时钩柄不会挡住操作者的视野，同时还便于操作者对劈核钩施力。
进一步地，所述钩体的前段与后段的弯折处在钩体的中点处，所述弯折处通过弧形进行过渡。弧形过渡为了防止劈核钩对其他非手术部位造成损伤。
进一步地，所述钩体由后段根部至弯折处直径递减，钩体由所述弯折处至前段端部直径保持不变。钩体的前段整体呈圆台形，沿钩柄的轴向延伸且直径递减，钩体的后段直径和钩体前段的最小直径相同。劈核钩的施力处的直径较大利于提高强度，劈核处的直径较小利于提高操作的精准度。
进一步地，所述弧形钩的两端均为钝圆结构。弧形钩的两端钝圆结构的设置有效降低了手术过程中患者后囊膜破裂的风险。
进一步地，所述弧形钩的两端的直线距离为2.2~2.6mm。弧形钩的两端的直线距离为2.2~2.6mm时的弧形钩长度适中，进而刀刃也具有合适的长度，具有更好的劈核效果，同时也方便手术时将弧形钩从环形撕囊口边缘下伸入至晶状体赤道部。
为便于操作者对劈核钩施力，优选地，所述弧形钩的两端的连线与钩体的后段呈90°~110°的夹角。
 有益效果
本发明的白内障手术用反式劈核钩，结构合理，操作安全方便；弧形钩由上至下曲率递增，有利于准确的嵌顿住患者晶状体核的赤道部，抓核更加牢固，整个弧形钩更为细长，有利于劈核钩的刀刃充分插入晶状体内，劈核更为彻底，也提高了劈核效率；钩柄和钩体之间具有合适的夹角，手术操作时钩柄不会挡住操作者的视野，同时还便于操作者对劈核钩施力。
附图说明
图1为本发明白内障手术用反式劈核钩的结构示意图。
图2为本发明白内障手术用反式劈核钩的钩体处的局部放大图。
 具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。
图1为本实施例白内障手术用反式劈核钩的结构示意图。该劈核钩包括钩柄1与钩体2，钩柄1与钩体2连接为一体结构。
其中，钩柄1的表面沿轴向分布有若干道纵向防滑棱11，防滑棱11的设置有利于防滑，避免手术操作时劈核钩从手中滑落，提高了手术操作的安全性。
如图2所示，钩体2的后段沿钩柄1的轴向延伸，钩体2的前段向上弯折与钩体2的后段呈110°~130°的夹角（即角a），角a的大小进一步优选为120°。由于钩柄1和钩体2具有一定的夹角，手术操作时钩柄1不会挡住操作者的视野，同时还便于操作者对劈核钩施力。
钩体2前段与钩体2后段的弯折处在钩体2的中点处，该弯折处通过弧形进行过渡。合理的弯折处设置方便手术操作，钩体2的前段与后段之间的弯折处通过弧形进行过渡，可以防止劈核钩对其他非手术部位造成损伤。
钩体2由后段根部至弯折处直径递减，基本呈圆台形，钩体2由弯折处至前段端部直径保持不变，钩体2的端部向下弯折40°~60°（即角b）并通过内弯形成弧形钩21，角b的大小进一步优选为50°，弧形钩21的弧形弯曲内侧设有刀刃211，弧形钩21的背面设计为钝圆状。
具体地，钩体2与钩柄1的连接处为劈核钩的施力处，此处的直径较大有利于提高劈核钩的强度，钩体2弯折处前部的劈核处直径较小利于提高操作的精准度。弧形钩21由上至下曲率递增，有利于准确的嵌顿住患者晶状体核的赤道部，抓核更加牢固，整个弧形钩21更为细长，有利于劈核钩的刀刃211充分插入晶状体内，劈核更为彻底。另外，弧形钩21的背面设计为钝圆状，即使劈核钩与后囊膜接触，由于着力点为横截面，而非一个点（普通劈核钩），减小了压强，对后囊膜相对更安全。
弧形钩21的两端均为钝圆结构，钝圆结构的设置有效降低了手术过程中患者后囊膜破裂的风险。弧形钩21的两端的直线距离为2.2~2.6mm，进一步优选为2.4 mm。弧形钩21的两端的直线距离为2.4mm时的弧形钩21长度适中，进而刀刃211也具有合适的长度，具有更好的劈核效果，同时也方便手术时将弧形钩21从环形撕囊口边缘下伸入至晶状体赤道部。
弧形钩21的两端的连线与钩体2的后段呈90°~110°的夹角（即角c），角c的大小进一步优选为100°，合理的角度有利于操作者对劈核钩施力。
该反式劈核钩由钛合金材料制成。钛合金因具有强度高、耐蚀性好、耐热性高等优点，手术之前可以对劈核钩进行完全彻底的消毒，使得劈核钩可以重复使用，保证了资源的合理配置。
综上所述，本实施例的白内障手术用反式劈核钩，结构合理，操作安全方便；弧形钩由上至下曲率递增，有利于准确的嵌顿住患者晶状体核的赤道部，抓核更加牢固，整个弧形钩更为细长，有利于劈核钩的刀刃充分插入晶状体内，劈核更为彻底，也提高了劈核效率；钩柄和钩体之间具有合适的夹角，手术操作时钩柄不会挡住操作者的视野，同时还便于操作者对劈核钩施力；钛合金材质具有强度高、耐蚀性好、耐热性高等优点，使得劈核钩在经过彻底消毒后可以重复使用，保证了资源的合理配置。
以上所述实施例仅仅是本发明的优选实施方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通技术人员对本发明的技术方案作出的各种变形和改进，均应落入本发明的权利要求书确定的保护范围内。

Claims (8)

  1. 一种白内障手术用反式劈核钩，包括钩柄（1）以及与所述钩柄（1）连接为一体结构的钩体（2），其特征在于，所述钩体（2）的后段沿钩柄（1）的轴向延伸，钩体（2）的前段整体向上弯折，钩体（2）前段的端部向下弯折并通过内弯形成弧形钩（21），所述弧形钩（21）的曲率随着弧形钩（21）的延伸递增，弧形钩（21）的弧形弯曲内侧设有刀刃（211）。
  2. 如权利要求1所述的白内障手术用反式劈核钩，其特征在于，所述钩体（2）前段的端部向下弯折40°~60°并通过内弯形成弧形钩（21）。
  3. 如权利要求1所述的白内障手术用反式劈核钩，其特征在于，所述钩体（2）的前段与所述钩体（2）的后段呈110°~130°的夹角。
  4. 如权利要求1所述的白内障手术用反式劈核钩，其特征在于，所述钩体（2）的前段与后段的弯折处在钩体（2）的中点处，所述弯折处通过弧形进行过渡。
  5. 如权利要求3所述的白内障手术用反式劈核钩，其特征在于，所述钩体（2）由后段根部至弯折处直径递减，钩体（2）由所述弯折处至前段端部直径保持不变。
  6. 如权利要求4所述的白内障手术用反式劈核钩，其特征在于，所述弧形钩（21）的两端均为钝圆结构。
  7. 如权利要求5所述的白内障手术用反式劈核钩，其特征在于，所述弧形钩（21）的两端的直线距离为2.2~2.6mm。
  8. 如权利要求5所述的白内障手术用反式劈核钩，其特征在于，所述弧形钩（21）的两端的连线与所述钩体（2）的前段呈90°~110°的夹角。
PCT/CN2016/094425 2015-06-09 2016-08-10 一种白内障手术用反式劈核钩 WO2016198028A1 (zh)

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