CN211301088U

CN211301088U - Flusher between corneal flap layer for LASIK operation

Info

Publication number: CN211301088U
Application number: CN201922369121.4U
Authority: CN
Inventors: 李彩红; 赵宏; 李阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-21
Anticipated expiration: 2029-12-25

Abstract

The utility model belongs to the technical field of medical instruments, in particular to a corneal flap interlaminar flusher for LASIK operation, which comprises an injector, wherein a flushing needle head is detachably connected on the injector; the flushing needle head comprises a pintle matched with the injector, and the pintle is connected with a needle stem; the needle stalk comprises a front needle stalk connected with the pintle, and the front needle stalk is connected with a rear needle stalk; one end of the rear needle stalk, which is far away from the front needle stalk, is provided with a needle head washing hole, the surface of the rear needle stalk, which is far away from the pintle, is provided with a lower washing hole, and the rear needle stalk is also provided with two groups of side washing holes which are arranged at two sides of the lower washing hole; the injector is also provided with a constant-speed flushing structure; the utility model discloses the effectual current flusher of having solved has the poor and poor problem of security of washing effect.

Description

Flusher between corneal flap layer for LASIK operation

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to flusher between LASIK operation is with corneal lamella.

Background

LASIK is the refractive ablation of the sub-stromal layer of the corneal flap with an excimer laser to reduce the curvature of the cornea in the pupillary region and to correct myopia (conventionally, the cornea is used as a transparent material and a pair of lenses are created by ablation). Can correct 200-2000 degrees of myopia, and is a common operation for correcting high myopia from the observation of the current clinical results.

LASIK surgery requires cutting the corneal layer, inserting a large amount of cut impurities such as debris, fibrous foreign bodies, meibomian gland lipids, etc. between the corneal flap layers, and washing to remove impurities is conventionally performed in the surgery. The existing flusher is formed by connecting an injector pre-filled with balanced salt solution with a bent metal needle, the needle is inserted into a cornea along a cutting path, a push rod of the injector is slightly pushed, liquid horizontally flows out of the metal needle for flushing, and different parts are flushed by changing the direction of the needle; however, in specific use, the problems of poor washing effect and poor safety exist, and the main manifestations are as follows: during flushing, liquid flows out of the metal needle to form single-strand water flow, so that excessive flushing force of the water flow is easily caused to local parts, and posterior corneal edema is easily caused; in addition, when the device is used, the water flow speed is unstable due to the fact that the telescopic end of the injector is manually pushed, the water flow flushing force is too large, the posterior corneal edema is easily caused, and the postoperative vision recovery is influenced.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a flusher between LASIK operation is with corneal lamella, effectual solved current flusher have the problem that the washing effect is poor and the security is poor.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a corneal flap interlaminar flusher for LASIK surgery comprises an injector, wherein a flushing needle head is detachably connected to the injector; the flushing needle head comprises a pintle matched with the injector, and the pintle is connected with a needle stem; the needle stalk comprises a front needle stalk connected with the pintle, and the front needle stalk is connected with a rear needle stalk; one end of the rear needle stalk, which is far away from the front needle stalk, is provided with a needle head washing hole, the surface of the rear needle stalk, which is far away from the pintle, is provided with a lower washing hole, and the rear needle stalk is also provided with two groups of side washing holes which are arranged at two sides of the lower washing hole; the injector is also provided with a constant speed flushing structure.

Further, the structure is washed at the uniform velocity includes that the lower fixed ring of syringe shell and the last fixed ring corresponding with the lower fixed ring are located to the cover, and last fixed ring rotates and is connected with the lead screw, and the lead screw is kept away from the one end of last fixed ring and is rotated with the lower fixed ring and be connected, and the spiro union has the subassembly that draws with the flexible end complex of syringe on the lead screw.

Furthermore, the traction assembly comprises a traction block in threaded connection with the screw rod, a pair of traction rods in sliding connection with the upper fixing ring are fixedly connected to the traction block, and a traction cover matched with the telescopic end of the injector is connected to one end, far away from the traction block, of each traction rod.

Furthermore, the surface of the pintle far away from the front needle stalk is provided with a guide mark.

Furthermore, the included angle between the rear needle stalk and the front needle stalk is 135 degrees.

Furthermore, a protective shell corresponding to the screw rod is arranged on the lower fixing ring.

Furthermore, the side washing hole, the lower washing hole and the needle head washing hole are all composed of a plurality of groups of washing holes which are arranged along the ring shape.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses when using, slow down the flushing pressure that balanced salt solution got into the cornea through setting up side washing hole, lower washing hole, syringe needle washing hole, side washing hole, lower washing hole, syringe needle washing hole constitute along the flushing hole that the annular set up by the multiunit moreover, use the flushing hole that the multiunit set up along the annular to the flushing pressure speed down once more, improve the utility model discloses an effect of washing. The constant-speed flushing structure is arranged to drive the injector to flush the cornea of the patient at a constant speed, so that the flushing effect can be improved, and the labor intensity of medical staff is reduced.

Drawings

Fig. 1 is an isometric view of the present invention;

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

FIG. 3 is a first isometric view of the needle of the present invention;

FIG. 4 is a second axial view of the needle of the present invention;

in the figure: 1. the needle washing device comprises a washing needle head, 2, a lower fixing ring, 3, a syringe, 4, a protective shell, 5, an upper fixing ring, 6, a motor, 7, a screw rod, 8, a traction rod, 9, a traction cover, 10, a pintle, 11, a needle stem, 12, a lower washing hole, 13, a side washing hole, 14, a needle head washing hole, 15 and a guide mark.

Detailed Description

A corneal flap interlaminar flusher for LASIK surgery, as shown in figures 1-4, comprises a syringe 3, an flushing needle 1 is detachably connected on the syringe 3; as shown in fig. 3 and 4, the washing needle 1 comprises a pintle 10 matched with the syringe 3, and a needle stem 11 is connected to the pintle 10; the needle stalk 11 comprises a front needle stalk 11 connected with the pintle 10, and the front needle stalk 11 is connected with a rear needle stalk 11; one end of the rear needle stem 11, which is far away from the front needle stem 11, is provided with a needle head flushing hole 14, the surface of the rear needle stem 11, which is far away from the pintle 10, is provided with a lower flushing hole 12, the rear needle stem 11 is also provided with two groups of side flushing holes 13, and the side flushing holes 13 are arranged at two sides of the lower flushing hole 12; the injector 3 is also provided with a constant-speed flushing structure; the side washing holes 13, the lower washing holes 12 and the needle washing holes 14 are all composed of a plurality of groups of washing holes arranged along the ring shape.

When the utility model is used, the injector 3 pre-loaded with the balanced salt solution is arranged on the uniform speed flushing structure, the flushing needle 1 is inserted into the cornea along the cutting path, the uniform speed flushing structure moves to drive the injector 3 to push at a uniform speed, the balanced salt solution flows into the needle stem 11 from the injector 3 through the pintle 10 at a uniform speed, and the balanced salt solution flows out through the side flushing hole 13, the lower flushing hole 12 and the needle head flushing hole 14 to remove impurities; that is the utility model discloses when using, slow down the flushing pressure that balanced salt solution got into the cornea through setting up side flushing hole 13, lower flushing hole 12, syringe needle flushing hole 14, side flushing hole 13, lower flushing hole 12, syringe needle flushing hole 14 constitute along the flushing hole that the annular set up by the multiunit moreover, use the flushing hole that the multiunit set up along the annular to the flushing pressure speed down once more, improve the utility model discloses a washing effect.

Further, as shown in fig. 2, the constant speed flushing structure comprises a lower fixing ring 2 sleeved on the shell of the injector 3 and an upper fixing ring 5 corresponding to the lower fixing ring 2, the upper fixing ring 5 is rotatably connected with a lead screw 7, one end of the lead screw 7 far away from the upper fixing ring 5 is rotatably connected with the lower fixing ring 2, and the lead screw 7 is screwed with a traction assembly matched with the telescopic end of the injector 3; the traction assembly comprises a traction block in threaded connection with a screw rod 7, a pair of traction rods 8 in sliding connection with the upper fixing ring 5 are fixedly connected to the traction block, and one ends, far away from the traction block, of the traction rods 8 are connected with traction covers 9 matched with the telescopic ends of the syringes 3. The upper supporting ring is provided with a motor 6, the output end of the motor 6 is connected with a driving wheel, and a driven wheel fixedly connected with a screw rod 7 is meshed on the driving wheel.

When the uniform speed washing structure is used, the initial state of the uniform speed washing structure is as follows: the traction block is contacted with the upper fixing ring 5; the syringe 3 is penetrated into the upper fixing ring 5 and the lower fixing ring 2, so that the needle handle of the syringe 3 is contacted with the upper fixing ring 5; the motor 6 acts, the motor 6 drives the driven wheel to rotate through the driving wheel, the driven wheel drives the screw rod 7 to rotate, the screw rod 7 drives the traction rod 8 to slide along the upper fixing ring 5 through the traction block, and the traction rod 8 drives the traction cover 9 to move to be in contact with the telescopic end of the injector 3; the motor 6 continues to act to drive the traction cover 9 to press the telescopic end of the injector 3, and the injector 3 pushes the balanced salt solution to the position of the injection needle head; after the injection is finished, the motor 6 rotates reversely to drive the traction cover 9 to move in the opposite direction, and when the traction block is in contact with the upper fixing ring 5, the motor 6 stops rotating.

Furthermore, the surface of the pintle 10 far away from the front needle stalk 11 is provided with a guide mark 15; the guide mark 15 is arranged to guide the medical care personnel to operate, so that the lower flushing hole 12 is flushed downwards or is deflected to be flushed, and the flushing effect is improved.

Furthermore, the included angle between the rear needle stem 11 and the front needle stem 11 is 135 degrees, and 135 degrees are arranged, so that the operation of medical staff is facilitated, and the labor intensity of the medical staff is reduced.

Further, be equipped with on the lower fixed ring 2 with the corresponding protective housing 4 of lead screw 7, set up protective housing 4 protection lead screw 7, improve the utility model discloses a stability.

Claims

1. A corneal flap interlaminar flusher for LASIK operation comprises an injector (3), wherein a flushing needle head (1) is detachably connected to the injector (3); the method is characterized in that: the flushing needle head (1) comprises a pintle (10) matched with the injector (3), and a needle stem (11) is connected to the pintle (10); the needle stalk (11) comprises a front needle stalk (11) connected with the pintle (10), and the front needle stalk (11) is connected with a rear needle stalk (11); one end of the rear needle stem (11) far away from the front needle stem (11) is provided with a needle head flushing hole (14), the surface of the rear needle stem (11) far away from the needle plug (10) is provided with a lower flushing hole (12), the rear needle stem (11) is also provided with two groups of side flushing holes (13), and the side flushing holes (13) are arranged at two sides of the lower flushing hole (12); the injector (3) is also provided with a constant speed flushing structure.

2. The LASIK surgical interlaminar irrigator of claim 1 which is characterized by: the structure is washed at the uniform velocity includes that the cover locates lower fixed ring (2) of syringe (3) shell and upper fixed ring (5) corresponding with lower fixed ring (2), and the last rotation of upper fixed ring (5) is connected with lead screw (7), and the one end that upper fixed ring (5) were kept away from in lead screw (7) is connected with lower fixed ring (2) rotation, and the spiro union has the end complex with syringe (3) flexible end to draw the subassembly on lead screw (7).

3. The LASIK surgical interlaminar irrigator of claim 2 which is characterized by: the traction assembly comprises a traction block in threaded connection with a screw rod (7), a pair of traction rods (8) in sliding connection with the upper fixing ring (5) are fixedly connected to the traction block, and one ends, far away from the traction block, of the traction rods (8) are connected with traction covers (9) matched with the telescopic ends of the syringes (3).

4. The LASIK surgical interlaminar irrigator of claim 1 which is characterized by: the surface of the pintle (10) far away from the front needle stalk (11) is provided with a guide mark (15).

5. The LASIK surgical interlaminar keratome irrigator of claim 4, wherein: the included angle between the rear needle stalk (11) and the front needle stalk (11) is 135 degrees.

6. The LASIK surgical interlaminar irrigator of claim 2 which is characterized by: and the lower fixing ring (2) is provided with a protective shell (4) corresponding to the screw rod (7).

7. The LASIK surgical interlaminar irrigator of claim 1 which is characterized by: the side flushing holes (13), the lower flushing holes (12) and the needle head flushing holes (14) are all composed of a plurality of groups of flushing holes which are arranged along the ring shape.