CN215606582U

CN215606582U - Artificial crystal suspension device

Info

Publication number: CN215606582U
Application number: CN202121933772.2U
Authority: CN
Inventors: 田野
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-01-25
Anticipated expiration: 2031-08-17

Abstract

The utility model belongs to the technical field of medical instruments, and solves the technical problems of long operation time, complex operation by using a suture, easy falling of the suture and deviation of an intraocular lens in the prior art, and provides an intraocular lens suspension device which comprises a handle sleeve, wherein a movable sleeve is arranged in one end of the handle sleeve in a sliding manner, a movable core is arranged in the movable sleeve in a sliding manner, a lens loop lantern ring with two movably connected ends is arranged in the movable core, the lens loop lantern ring is formed by movably connecting two opposite bent ends of a strip-shaped structure, one end of the lens loop is connected with a lantern ring one-way lock, the other end of the lens loop extends into the movable sleeve through the lantern ring one-way lock and the movable core and is connected with a one-way lock strip, and the one-way lock strip is provided with a one-way fixed lock. The artificial lens suspension device has the advantages of short operation time, protection of intraocular tissues, simplicity and convenience in operation and firmness in fixing of the artificial lens.

Description

Artificial crystal suspension device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an intraocular lens suspension device.

Background

At present, the main mode of cataract surgery is cataract ultrasonic emulsification and intraocular lens implantation, most patients implant intraocular lenses in the first stage with continuous maturity of the operation technology of ophthalmologists, but for some special cases, such as patients with eye trauma history, cataract in the over-mature stage, complications in the operation and the like, the posterior capsule of crystalline lens can be broken or the suspensory ligament is disconnected, the intraocular lens cannot be implanted according to the conventional method at the moment, the operation mode of intraocular lens suspension is often selected, namely, the intraocular lens is sewn into the eyes of the patients by the suspension method of doctors through sutures. In the case of clinically insufficient posterior capsular sac support after traumatic cataract, after lens cutting, after intracapsular cataract extraction, etc., the posterior chamber type intraocular lens implantation needs to be performed with ciliary sulcus intraocular lens suture suspension fixation. During the operation, the intraocular lens needs to be fixed by using a suture, if the suture is only covered by a bulbar conjunctiva, the conjunctiva can be penetrated by the suture knot for a long time, and the intraocular infection at a later stage is easy to cause or the suture falls off for a long time to cause the intraocular lens to fall into a vitreous cavity. In addition, the artificial ciliary sulcus lens suture suspension technology is used for fixing the artificial ciliary sulcus lens at two points, so that the stability of the artificial ciliary sulcus lens is poor, and the artificial ciliary sulcus lens is easy to incline. Therefore, posterior chamber intraocular lens scleral sutureless fixation (also called scleral fixation intraocular lens suspension) has been developed clinically.

Intraocular lens suspensions have been made in a number of ways, and current methods involve intraoperative fixation by pulling sutures through the wall of the eye and anchoring them to the intraocular lens or pulling the intraocular lens haptics to the eye wall, often with large incisions for implantation of the intraocular lens. In the process, when the intraocular lens suspension wire is butted and penetrates through the wall of the eyeball by using a small syringe, the surrounding tissues are easily damaged, the butt joint is unsuccessful in the case of large eyeball, and the risk that the intraocular tissues are damaged even by the sliding of a sewing needle and serious complications are caused. In addition, in the operation, the intraocular lens loop needs to be clamped by the ophthalmic microscopic forceps, if the intraocular lens loop is repeatedly clamped, the surface of the intraocular lens is abraded or the intraocular lens loop is broken, so that iatrogenic intraocular foreign bodies are caused, the operation time is prolonged, and the postoperative reaction is serious.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an artificial lens suspension device, which is used for solving the technical problems of long operation time, easy falling of loosened suture and serious consequences.

The embodiment of the utility model provides an artificial lens suspension device, which comprises a handle sleeve, wherein a movable sleeve is arranged in one end of the handle sleeve in a sliding manner, a movable core is arranged in the movable sleeve in a sliding manner, a lens loop lantern ring is arranged in the movable core, the lens loop lantern ring is formed by bending and movably connecting two ends of a strip-shaped structure relatively, one end of the lens loop lantern ring is connected with a lantern ring one-way lock, the other end of the lens loop lantern ring passes through the lantern ring one-way lock and the movable core and extends into the movable sleeve and is connected with a one-way lock strip, a one-way fixed lock is arranged on the one-way lock strip, a plurality of one-way stopping teeth in the same direction are respectively arranged on the lens loop lantern ring and the one-way lock strip at equal intervals, and one-way stopping teeth in opposite directions are arranged on the lantern ring one-way lock and the one-way fixed lock; the inside cover of handle sleeve pipe one end of keeping away from movable sleeve is equipped with the boost motor that is used for promoting crystal tong "pan" lantern ring, activity core and ring movable sleeve outwards to remove in proper order.

The working principle and the process are as follows:

respectively making a vertical straight scleral incision with the length of about 3mm from the positions 2.5mm-3mm behind the two sides of the position of 9 points and 3 points of the corneal limbus, making a scleral tunnel with the length of about 2mm, entering the pupillary region from the position below the iris plane, making a tunnel incision at the position of 10 points of the corneal limbus, pushing a folded artificial lens loop into the anterior chamber, pushing a lens loop lantern ring out of the 9 points by a booster through a handle sleeve, pushing the lens loop into the anterior chamber from the tunnel opening to sleeve the lens loop, further pushing a lantern ring one-way lock to lock the lens loop lantern ring through a movable core to lock the artificial lens loop, withdrawing the booster, pushing a part of one-way lock strip of the detained loop out of the iris plane, pushing a one-way fixed lock at the tail part of the handle sleeve out of the scleral tunnel, removing the booster, tightly locking the one-way lock strip in the tunnel through the one-way lock strip and a single-way fixed lock outside the scleral tunnel, cutting off the one-way lock strip of the surplus lens loop and the lantern ring through one-way stop teeth with opposite directions to realize the macro-small adjustment and the small adjustment of the crystal loop Tightly clamping and closing the sclera tunnel by the unidirectional locking strip and the unidirectional fixing lock through the unidirectional stopping teeth, and intermittently suturing a scleral incision needle; the other loop is operated at the point 3, and the artificial crystal position is checked to be centered after the operation is finished.

Further, the handle sleeve pipe includes handle pipe and rearmounted sleeve pipe, the handle pipe includes handle and back sleeve pipe, back sleeve pipe is the T font with the handle and sets up, rearmounted sleeve pipe sets up with back sleeve pipe coaxial line and with handle fixed connection.

The handle pipe is fixed by hand when convenient to operate, the rear sleeve is used for installing and connecting the booster, and the rear sleeve is used for moving the movable sleeve.

Further, the boost motor includes thumb boost motor, first ejector pin, second ejector pin and third ejector pin, thumb boost motor and first ejector pin coaxial coupling, the second ejector pin sets up between first ejector pin and third ejector pin and respectively with first ejector pin and third ejector pin coaxial coupling, the diameter of first ejector pin, second ejector pin and third ejector pin reduces in proper order, first ejector pin and handle sleeve's hole sliding fit, second ejector pin and movable sleeve's hole sliding fit, the hole sliding fit of third ejector pin and activity core.

The thumb booster is used for pressing hands, and the first ejector rod, the second ejector rod and the third ejector rod move in the handle sleeve under stress, so that the movable sleeve, the movable core and the crystal loop sleeve ring are ejected out, and the operation is realized.

Furthermore, the one-way fixed lock is a folding T-shaped silica gel lock and comprises a lock cylinder with one-way stopping teeth and a folding baffle tab arranged on the outer side surface of the lock cylinder, the lock cylinder is cylindrical, a rectangular through hole is formed in the axis, and the one-way stopping teeth are arranged in the through hole.

The one-way locking strip penetrates through the through hole and is matched with the one-way stopping tooth, the folding type blocking tab is folded and contracted in the movable sleeve, and after the folding type blocking tab is taken out, the folding type blocking tab can be clamped in the sclera tunnel after being unfolded.

Furthermore, the length of the thumb booster exposed out of the handle sleeve is the same as the movable length of the third ejector rod, the length of the third ejector rod is greater than that of the movable core, the length of the second ejector rod is less than that of the movable sleeve, and the length of the third ejector rod is less than that of the handle sleeve.

The length of the first ejector rod, the length of the second ejector rod and the length of the third ejector rod are limited, so that the movable sleeve, the movable core and the loop of the crystal loop can be ejected out accurately.

Further, the crystal loop lantern ring is made of PMMA polyformaldehyde methyl acrylate material.

Further, the one-way locking strip is made of a silica gel material.

In conclusion, the beneficial effects of the utility model are as follows:

the lens loop lantern ring is matched with the lantern ring unidirectional lock to realize locking and fixing of the lens loop, so that the intraocular lens suspension operation can be conveniently carried out, meanwhile, the unidirectional lock strip is fixed in the sclera tunnel through the matching of the unidirectional fixing lock and the unidirectional lock strip, so that the fixing of the lens loop lantern ring is realized, the redundant unidirectional lock strip is cut off, the intraocular lens is quickly suspended, the operation time is saved, the postoperative recovery is quick, and the effect is good. After the mold finished product is manufactured in the later period, the mass production can be carried out.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a partial schematic view of the present invention;

FIG. 3 is a schematic view of the structure of the booster of the present invention;

fig. 4 is a schematic structural view of the one-way fixing lock of the present invention.

In the figure: 1. a loop of lens; 11. the lantern ring is locked in a one-way; 2. a movable core; 3. an active cannula; 4. a unidirectional fixed lock; 41. a lock cylinder; 42. a through hole; 43. a foldable guard tab; 44. one-way stopping teeth; 5. a one-way locking bar; 6. a rear sleeve; 7. a handle; 8. a rear sleeve; 9. a booster; 91. a thumb booster; 92. a first ejector rod; 93. a second ejector rod; 94. and a third ejector rod.

Detailed Description

Example 1:

as shown in fig. 1-4, an intraocular lens suspension device comprises a handle sleeve, a movable sleeve 3 is slidably arranged in one end of the handle sleeve, a movable core 2 is slidably arranged in the movable sleeve 3, the movable sleeve 3 and the movable core 2 can be taken down, a lens loop lantern ring 1 is arranged in the movable core 2, the lens loop lantern ring 1 is formed by movably connecting two opposite ends of a strip-shaped structure after being bent, one end of the lens loop lantern ring 1 is connected with a lantern ring unidirectional lock 11, the other end of the lens loop unidirectional lock 11 penetrates through the lantern ring unidirectional lock 11 and the movable core 2 to extend into the movable sleeve 3 and is connected with a unidirectional locking bar 5, the unidirectional locking bar 5 is provided with a unidirectional fixed lock 4, unidirectional stopping teeth are uniformly distributed on the unidirectional locking bar 5, a plurality of unidirectional stopping teeth 44 in the same direction are respectively arranged on the lens loop 1 and the unidirectional locking bar 5 at equal intervals, and unidirectional stopping teeth 44 in opposite directions are arranged on the lantern ring unidirectional lock 11 and the unidirectional fixed lock 4; the unidirectional locking strip 5 is connected with the unidirectional fixed lock 4 through unidirectional stopping teeth 44 arranged on the unidirectional locking strip and the unidirectional fixed lock, and a booster 9 used for pushing the crystal loop lantern ring 1, the movable core 2 and the ring movable sleeve 3 to move outwards in sequence is sleeved inside one end, far away from the movable sleeve 3, of the sleeve of the handle 7.

The handle sleeve pipe includes handle pipe and rearmounted sleeve pipe 8, and the handle pipe includes handle 7 and rear sleeve pipe 6, and rear sleeve pipe 6 is the T font with handle 7 and sets up, and the edge of handle 7 is arc, and rearmounted sleeve pipe 8 sets up and handle 7 fixed connection with rear sleeve pipe 6 coaxial line.

The handle 7 is fixed by hand when being operated conveniently, the rear sleeve 8 is used for installing and connecting the booster 9, and the rear sleeve 6 is used for moving the movable sleeve 3.

The booster 9 comprises a thumb booster 91, a first ejector rod 92, a second ejector rod 93 and a third ejector rod 94, the thumb booster 91 is coaxially connected with the first ejector rod 92, the second ejector rod 93 is arranged between the first ejector rod 92 and the third ejector rod 94 and is respectively coaxially connected with the first ejector rod 92 and the third ejector rod 94, the diameters of the first ejector rod 92, the second ejector rod 93 and the third ejector rod 94 are sequentially reduced, the first ejector rod 92 is in sliding fit with an inner hole of the sleeve of the handle 7, the second ejector rod 93 is in sliding fit with an inner hole of the movable sleeve 3, and the third ejector rod 94 is in sliding fit with an inner hole of the movable core 2.

The thumb booster 91 is used for pressing by hand, and the first ejector rod 92, the second ejector rod 93 and the third ejector rod 94 move in the sleeve of the handle 7 under stress, so that the movable sleeve 3, the movable core 2 and the loop of crystal 1 are ejected out, and the operation is realized.

The unidirectional fixed lock 4 is a folding T-shaped silica gel lock, and comprises a lock core 41 with unidirectional stopping teeth 44 and a folding baffle tab 43 arranged on the outer side surface of the lock core 41, wherein the lock core 41 is cylindrical, a rectangular through hole 42 is formed along the axis, and the unidirectional stopping teeth 44 are arranged in the through hole 42.

The length of the thumb booster 91 exposed out of the sleeve of the handle 7 is the same as the movable length of the third ejector rod 94, the length of the third ejector rod 94 is greater than that of the movable core 2, the length of the second ejector rod 93 is less than that of the movable sleeve 3, and the length of the third ejector rod 94 is less than that of the sleeve of the handle 7.

The loop of lens 1 is made of PMMA polyoxymethylene methyl acrylate material.

The one-way locking strip 5 is made of medical silica gel material, and the lantern ring one-way lock 11 is made of medical silica gel material.

The working principle and the process are as follows:

respectively making a vertical straight scleral incision with the length of about 3mm from the positions 2.5mm-3mm behind the two sides of the position of 9 points and 3 points of the corneal limbus, making a scleral tunnel with the length of about 2mm into the anterior chamber, making a tunnel incision at the position of 10 points, pushing a folded artificial lens loop into the anterior chamber, pushing a lens loop lantern ring 1 out through a handle 7 sleeve at the position of 9 points by using a booster 9, pushing the lens loop into the anterior chamber from the tunnel opening to sleeve the lens loop, further pushing a lantern ring one-way lock 11 to lock the lens loop lantern ring 1 through a movable core 2 so as to lock the artificial lens loop, withdrawing the booster 9, remaining a part of one-way locking strips 5 below the iris plane, pushing a one-way fixing lock 4 out after the handle 7 sleeve is withdrawn outside the scleral tunnel, taking off the booster 9, inwards pushing the tunnel through the one-way locking strips 5 and a single-line fixing lock outside the scleral tunnel, cutting off the redundant one-way locking strips 5, the size of the loop 1 of the lens loop is adjusted and locked by the unidirectional stopping teeth 44 with opposite directions through the unidirectional locking ring 11 of the loop 1 of the lens loop, the unidirectional locking strip 5 and the unidirectional fixed lock 4 realize the clamping in the scleral tunnel through the unidirectional stopping teeth 44, and a needle for scleral incision is intermittently sutured; the other loop is operated at the point 3, and the artificial crystal position is checked to be centered after the operation is finished. The one-way locking strip 5 passes through the through hole 42 and is matched with the one-way stopping tooth 44, and the folding type stopping loop 43 is folded in the movable sleeve 3 in a contracting mode and can be clamped in the scleral tunnel after being taken out. The length of the first ejector pin 92, the second ejector pin 93 and the third ejector pin 94 is limited, which is beneficial to accurately ejecting the movable sleeve 3, the movable core 2 and the loop of crystal 1.

The design principle of the intraocular lens suspension lock is as follows: 1. first, the booster 9 head is designed to push out a folded loop of lens 1, the loop of lens 1 initially being folded inside the movable core 2.

2. Second, the loop one-way lock 11 can lock the pushed-out loop 1 of the lens loop.

3. The folded T-shaped unidirectional fixing lock 4 is completely pushed out of the sclera, the booster 9 is removed, the length of the unidirectional locking strip 5 can be automatically trimmed, and the unidirectional fixing lock 4 is used for tensioning downwards. The unidirectional fixed lock 4 and the lantern ring unidirectional lock 11 are both straight-line-shaped buckles capable of being pulled in a unidirectional mode, and unidirectional stopping teeth 44 are arranged in through holes 42 of the unidirectional fixed lock and the lantern ring unidirectional lock.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intraocular lens suspension device is characterized by comprising a handle sleeve, wherein a movable sleeve is arranged inside one end of the handle sleeve in a sliding manner, a movable core is arranged inside the movable sleeve in a sliding manner, a lens loop lantern ring is arranged in the movable core and is formed by movably connecting two opposite ends of a strip-shaped structure after being bent relatively, one end of the lens loop lantern ring is connected with a lantern ring one-way lock, the other end of the lens loop lantern ring penetrates through the lantern ring one-way lock and the movable core to extend into the movable sleeve and is connected with a one-way lock strip, a one-way fixed lock is arranged on the one-way lock strip, a plurality of one-way stopping teeth in the same direction are respectively arranged on the lens loop and the one-way lock strip at equal intervals, and one-way stopping teeth in opposite directions are arranged on the lantern ring one-way lock and the one-way fixed lock; the inside cover of handle sleeve pipe one end of keeping away from movable sleeve is equipped with the boost motor that is used for promoting crystal tong "pan" lantern ring, activity core and ring movable sleeve outwards to remove in proper order.

2. The intraocular lens suspension apparatus of claim 1 wherein the handle sleeve comprises a handle tube and a rear sleeve, the handle tube comprising a handle and a rear sleeve, the rear sleeve and the handle being disposed in a T-shape, the rear sleeve and the rear sleeve being disposed coaxially and fixedly attached to the handle.

3. The intraocular lens suspension device of claim 1, wherein the booster comprises a thumb booster, a first ejector rod, a second ejector rod and a third ejector rod, the thumb booster is coaxially connected with the first ejector rod, the second ejector rod is arranged between the first ejector rod and the third ejector rod and is coaxially connected with the first ejector rod and the third ejector rod respectively, the diameters of the first ejector rod, the second ejector rod and the third ejector rod are sequentially reduced, the first ejector rod is in sliding fit with the inner hole of the handle sleeve, the second ejector rod is in sliding fit with the inner hole of the movable sleeve, and the third ejector rod is in sliding fit with the inner hole of the movable core.

4. The intraocular lens suspension device according to claim 1, wherein the unidirectional fixed lock is a foldable T-shaped silica gel lock, comprising a lock core with unidirectional stopping teeth and a foldable stop tab arranged on the outer side of the lock core, the lock core is cylindrical and has a rectangular through hole along its axis, and the unidirectional stopping teeth are arranged in the through hole.

5. The intraocular lens suspension apparatus of claim 3 wherein the length of the thumb-aid exposed from the handle sleeve is the same as the length of the third plunger, the third plunger has a length greater than the length of the active core, the second plunger has a length less than the length of the active sleeve, and the third plunger has a length less than the length of the handle sleeve.

6. The intraocular lens suspension of claim 1 wherein the loop of lens is made of PMMA polymethylmethacrylate material.

7. The intraocular lens suspension apparatus of any one of claims 1-6 wherein the one-way locking bar is made of a medical grade silicone material.