CN210277242U

CN210277242U - Capsular bag retractor for incomplete dislocation of complex crystalline lens

Info

Publication number: CN210277242U
Application number: CN201920641909.3U
Authority: CN
Inventors: 蒋永祥; 张旻
Original assignee: Eye and ENT Hospital of Fudan University
Current assignee: Eye and ENT Hospital of Fudan University
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-04-10
Anticipated expiration: 2029-05-07

Abstract

The utility model relates to a capsular bag retractor for incomplete dislocation of complex crystalline lens, which consists of a retractor body and a locking device; the hook body of the draw hook comprises a hook body and a hook rod; the head of the hook body is provided with a round and blunt ball which is in an ellipsoid shape; the tail part of the hook body is fixedly connected with a hook rod, and the hook rod is in a round rod shape; the locking device is in a gasket shape and is sleeved on the hook rod. Its advantages are: avoids the phenomenon of easy drag hook slippage in the operation, reduces the damage of the drag hook slippage to the zonules and the anterior capsule, and improves the stability of the capsule and the success rate of the operation.

Description

Capsular bag retractor for incomplete dislocation of complex crystalline lens

Technical Field

The utility model relates to the technical field of ophthalmic appliances, in particular to a capsular bag retractor for incomplete dislocation of complex crystalline lens.

Background

The lens capsule is also called lens capsule (lens capsule; crys-talline capsule). Completely surrounding the lens is a transparent, elastic basement membrane that is produced by lens epithelial secretions.

The capsular bag retractor is mainly applied to the operation of incomplete dislocation of crystalline lens, is favorable for keeping the capsular bag stable and in-between positions in the operation, provides enough operation space for the implantation of ultrasonic emulsification, CTR or MCTR and IOL, provides convenience for keeping the separation of the capsular bag and the zonules of the crystalline lens to the maximum degree, improves the success rate of the operation and reduces the postoperative complications.

The iris drag hook is adopted to stabilize the capsular bag in the earliest incomplete dislocation of crystalline lens operation, but the drag hook arm is shorter, so that the capsular bag opening is easy to be torn and unhooked due to overlarge traction force; the tail end of the hook pulling head is sharp, and the opening of the front capsular sac is easy to tear. The later-appearing capsular bag draw hook or MST capsular bag draw hook is improved aiming at the two points, the draw hook arm is prolonged, and the tail end of the draw hook head is changed into an enlarged blunt circle, so that the method is more suitable for the operation of incomplete dislocation of crystalline lens in a larger range.

The head opening of the existing retractor is large, the angle is too flat (see the attached figure 2 in the specification), and the capsular bag is easy to slip in the operation. Once the hook is slipped during operation, the position of the capsular bag can be dislocated and violently moved, the capsular bag is easily sucked during ultrasonic emulsification, the injury of zonules, the rupture of posterior capsule or the separation of vitreous body are further aggravated, the nucleus of crystalline lens falls into the vitreous cavity, the environment of anterior segment of eye is disturbed, iris and corneal endothelium are injured, and even the separation of the capsular membrane and the zonules of the crystalline lens can not be kept, so that the minimally invasive operation of dislocating the crystalline lens fails.

Chinese patent documents: CN108272534A, published: 2018.07.13 discloses an intraocular lens capable of continuously zooming, which comprises an optical part and a telescopic part wrapped on the periphery of the optical part, wherein the optical part comprises a lens disc and a plurality of stressed loops uniformly distributed on the circumference of the lens disc, the stressed loops are T-shaped, and the tail ends of the stressed loops are provided with draw hooks; the telescopic part is provided with a front stress ring, a rear stress ring and a plurality of movable loops which are in one-to-one correspondence with the stress loops, the movable loops are V-shaped and are provided with circular ring holes and two supporting rods extending from the circular ring holes to two ends, the two supporting rods are respectively connected to the front stress ring and the rear stress ring, and the draw hooks are hung in the corresponding circular ring holes to enable the optical part to be hung in the telescopic part.

Chinese patent documents: CN106729975A, published: 2017.05.31, discloses a material for use in the manufacture of intraocular lenses. The material comprises a copolymer prepared by copolymerizing polymerizable monomers containing acrylate, wherein the polymerizable monomers containing acrylate comprise hydrophilic acrylate monomers and hydrophobic acrylate monomers.

However, no report is available on the capsular bag retractor for complex lens incomplete dislocation of the utility model.

Disclosure of Invention

The utility model aims at providing a can avoid easy drag hook slippage in the art, reduce the damage of drag hook slippage to suspensory ligament and anterior capsular sac, improve the complicated crystalline lens of bag stability and operation success rate and do not dislocate and use the bag drag hook.

In order to achieve the purpose, the utility model adopts the technical proposal that:

the capsular bag retractor for the incomplete dislocation of the complex crystalline lens comprises a retractor hook body and a locking device; the hook body of the draw hook comprises a hook body and a hook rod; the head of the hook body is provided with a round and blunt ball which is in an ellipsoid shape; the tail part of the hook body is fixedly connected with a hook rod, and the hook rod is in a round rod shape; the locking device is in a gasket shape and is sleeved on the hook rod.

The hook body of the draw hook is of an integrally formed structure.

The hook body of the draw hook is made of nylon, and the locking device is made of silica gel.

The diameter of the cross section of the hook body of the draw hook is 0.3mm, and the length of the hook rod is 9 mm.

The angle formed by the connecting place of the hook body and the hook rod is 145 degrees.

The radius of curvature from the joint of the hook body and the hook rod to the outermost end part of the hook body is 2.5mm, and the corresponding central angle is 60 degrees.

The radius of curvature from the most distal end of the hook body to the rounded portion is 3.5mm, corresponding to a central angle of 60 °.

The diameter of the cross section of the maximum position of the round and blunt ball is 0.5mm, and the length of the round and blunt ball is 1 mm.

The diameter of the outer ring of the locking device is 2.5mm, and the diameter of the inner ring of the locking device is 0.2 mm.

The utility model has the advantages that:

1. the utility model discloses a complicated crystalline lens is not totally dislocated and is used bag drag hook avoids easy drag hook slippage phenomenon in the art, reduces the damage of drag hook slippage to suspensory ligament and anterior capsule, improves bag stability and operation success rate.

2. The utility model discloses a complicated crystalline lens is capsular retractor for not complete dislocation, uses extensively, and social and economic benefits are high.

Drawings

FIG. 1 is a schematic view of a capsular bag retractor for complete dislocation of a complicated crystalline lens.

Fig. 2 is a schematic view of a conventional capsular bag retractor.

Detailed Description

The invention will be further described with reference to the following examples and with reference to the accompanying drawings.

The reference numerals and components referred to in the drawings are as follows:

1. hook body of draw hook

2. Hook body

3. Round and blunt ball

4. Hook rod

5. Locking device

Example 1

Referring to fig. 1, fig. 1 is a schematic structural diagram of a capsular bag retractor for complete dislocation of a complex crystalline lens according to the present embodiment. The capsular bag retractor for incomplete dislocation of the complex crystalline lens consists of a retractor hook body 1 and a locking device 5; the hook body 1 of the draw hook comprises a hook body 2 and a hook rod 4; the head of the hook body 2 is provided with a round and blunt ball 3, and the round and blunt ball 3 is in an ellipsoid shape; the tail part of the hook body 2 is fixedly connected with a hook rod 4, and the hook rod 4 is in a round rod shape; the locking device 5 is in a gasket shape, and the locking device 5 is sleeved on the hook rod.

The hook body 1 of the draw hook is of an integrally formed structure; the hook body 1 of the draw hook is made of nylon, and the locking device 5 is made of silica gel; the diameter of the cross section of the hook body 1 of the draw hook is 0.3mm, and the length of the hook rod 4 is 9 mm; the angle formed by the connecting position of the hook body 2 and the hook rod 4 is 145 degrees; the curvature radius from the joint of the hook body 2 and the hook rod 4 to the most remote part of the hook body 2 is 2.5mm, and the corresponding central angle is 60 degrees; the curvature radius of the part from the farthest end of the hook body 2 to the round blunt ball 3 is 3.5mm, and the corresponding central angle is 60 degrees; the diameter of the cross section of the maximum position of the round and blunt ball 3 is 0.5mm, and the length of the round and blunt ball 3 is 1 mm; the diameter of the outer ring of the locking device 5 is 2.5mm, and the diameter of the inner ring is 0.2 mm.

Example 2

Referring to fig. 1, fig. 1 is a schematic structural diagram of a capsular bag retractor for complete dislocation of a complex crystalline lens according to the present embodiment.

The hook body 1 of the draw hook is made of Nylon (Nylon), a locking device 5 made of silica gel (silicon) is sleeved on a draw hook arm to fix the draw hook, and the length of the actually pulled draw hook arm can be adjusted and the tension can be adjusted by sliding the device. The head of the hook body 2 is provided with a round blunt ball 3 for protecting the peripherial cyst membrane from being torn, increasing the area of the cyst membrane supported by the draw hook and reducing the number of the capsular bag draw hooks used in the operation.

Direct economic benefits: if the utility model is popularized and used clinically, about 5000 cases of congenital incomplete dislocation of crystalline lens are treated every year in the whole country, about 4000 cases of the novel operation method using the capsular bag draw hook, the ratio of the slippage in the capsular bag draw hook operation is calculated by 1/20, the probability of surgical treatment such as posterior capsular rupture, retinal detachment and the like which require anterior segment vitrectomy after the slippage is calculated by 1/10, 2 ten thousand yuan in each case, and the estimated direct economic benefit is 4000 x 1/20 x 1/10 x 2 as 40 ten thousand yuan.

Indirect economic benefits: through improving the auxiliary apparatus of the novel operation method, promoting the operation method, gradually eliminating the traditional method for destroying the capsular bag-zonule septum of the crystalline lens and suspending the IOL, the proportion of the surgery treatment required for the complication of the traditional operation method is 1/10, 2 ten thousand yuan in each case, and the estimated traditional indirect benefit is 1000 × 1/10 × 2 is 200 ten thousand yuan: meanwhile, the indirect economic benefit of the estimation of the traffic and the work error cost of the patient can reach 50 ten thousand yuan.

The total economic benefit is about 290 ten thousand yuan.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.

Claims

1. The capsular bag retractor for the incomplete dislocation of the complex crystalline lens is characterized by comprising a retractor hook body (1) and a locking device (5); the hook body (1) of the draw hook comprises a hook body (2) and a hook rod (4); the head of the hook body (2) is provided with a round and blunt ball (3), and the round and blunt ball (3) is in an ellipsoid shape; the tail part of the hook body (2) is fixedly connected with a hook rod (4), and the hook rod (4) is in a round rod shape; the locking device (5) is in a gasket shape, and the locking device (5) is sleeved on the hook rod; the angle formed by the connecting position of the hook body (2) and the hook rod (4) is 145 degrees; the curvature radius from the joint of the hook body (2) and the hook rod (4) to the farthest end part of the hook body (2) is 2.5mm, and the corresponding central angle is 60 degrees; the curvature radius of the part from the farthest end of the hook body (2) to the round blunt ball (3) is 3.5mm, and the corresponding central angle is 60 degrees.

2. The capsular bag retractor for the incomplete dislocation of the complex crystalline lens according to claim 1, wherein the retractor body (1) is an integrally formed structure.

3. The capsular bag retractor for complete dislocation of crystalline lens according to claim 1, wherein the retractor body (1) is made of nylon and the locking device (5) is made of silicone.

4. The capsular bag retractor for the incomplete dislocation of complex crystalline lens according to claim 1, wherein the diameter of the cross section of the retractor body (1) is 0.3mm, and the length of the hook rod (4) is 9 mm.

5. The capsular bag retractor for the incomplete dislocation of complex crystalline lens as claimed in claim 1, wherein the maximum cross-sectional diameter of the round and blunt ball (3) is 0.5mm, and the length of the round and blunt ball (3) is 1 mm.

6. Capsular bag retractor for the incomplete dislocation of complex crystalline lens according to claim 1, wherein the locking device (5) has an outer diameter of 2.5mm and an inner diameter of 0.2 mm.