Phakic astigmatism type eye endoscopic preoperative cornea marker

Abstract

The utility model provides a lens astigmatism type eye endoscopic preoperative cornea marker. The lens astigmatism type eye endoscopic preoperative cornea marker comprises a lower circular ring and an upper circular ring, the upper circular ring is arranged in the circular groove of the lower circular ring; two fixed nicking tools and a movable nicking tool are arranged on the inner ring of the upper circular ring, the two fixed nicking tools are fixed to the 0-degree position and the 180-degree position of the circular dial respectively, and the movable nicking tool is movably connected with the upper circular ring. The lower circular ring is buckled on the cornea of a patient by a doctor holding the device, a slit lamp light source is adjusted into a horizontal narrow slit, and the two fixed nicking tools of the upper circular ring are respectively overlapped with the slit lamp at 0 degree and 180 degrees; according to the to-be-implanted direction of the eye endoscope, the position of the movable nicking tool is adjusted to the mark point according to the circular dial on the upper circular ring; the upper circular ring is pressed towards the cornea direction, the lower-end knife noses of the fixed nicking knife and the movable nicking knife carry out scribing on the cornea, the nicks are dyed with a coloring agent, and marking of the astigmatism type eye endoscope implantation position is completed. According to the utility model, the shaft position deviation can be avoided, and the shaft position marking accuracy and the marking efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a corneal marker, in particular to a preoperative corneal marker for phakic astigmatism type of intraocular lens surgery. BACKGROUND

[0002] Phakic astigmatism type of intraocular lens technology is a safe and effective way for correcting myopia with astigmatism, and has good predictability and stability. In order to achieve perfect predictability and accuracy, the alignment of astigmatism type of intraocular lens on the axis position is very high, and astigmatism type of intraocular lens implantation surgery needs to be marked before surgery. Studies have shown that if the axis of astigmatism type of intraocular lens rotates more than 5°, it will cause residual astigmatism and visual impairment. The current clinical marking steps are as follows: the patient sits, the surface of the eye is anesthetized, the patient looks straight ahead under the slit lamp, the slit lamp light source is adjusted to horizontal narrow slit, and is vertically irradiated on the cornea. The center of the slit light source is aligned with the corneal center light spot, and the intersection of the two ends and the limbus is 0 degree and 180 degree direction, and the touch point is marked with a colored marker. This marking method has the following disadvantages: 1. The marking point is relatively large, which may occupy 5°, and with the secretion of tears, the marking point will be blurred, and the error of marking is relatively large; 2. The surgeon adjusts the final placement axis direction of the intraocular lens according to the implantation table during the operation, and the axis position checking time during the operation is relatively tense. Once the clockwise / counter-clockwise direction is wrong, the rotation position will be reversed during adjustment, which will cause the placement axis to be wrong, so that the astigmatism cannot be fully corrected, and secondary positioning operation is needed; 3. During the marking process of the marker, a point is generally first touched, and then the opposite point is touched. The marking process is time-consuming, and generally needs 3-5 minutes. If the patient's head position or eye direction changes slightly, the marking axis may be offset, which affects the accuracy of marking and further affects the accuracy of the final astigmatism type of intraocular lens implantation surgery. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a kind of lens eye astigmatism type intraocular lens marking ware before operation, including lower annular and upper annular;The lower annular is fixed ring, and the inner circle of lower annular is equipped with annular groove, and upper annular is equipped in the annular groove of lower annular;Several reset springs are equipped between lower annular and upper annular, and the upper surface of upper annular is equipped with circular scale dial;The inner circle of upper annular is equipped with two fixed cutting tools and one mobile cutting tool, and two fixed cutting tools are fixed at 0 and 180 of circular scale dial respectively, and mobile cutting tool is movably connected with upper annular, and can slide along the inner circle of upper annular;The length between fixed cutting tool and mobile cutting tool from the lower surface of lower annular to the lower end of cutting tool is greater than the height between the bottom of annular groove of lower annular and the bottom edge of inner circle of lower annular;When reset spring resets, the lower end of fixed cutting tool and mobile cutting tool is higher than the bottom edge of inner circle of lower annular, and when upper annular is pressed to contact with lower annular, the lower end of fixed cutting tool and mobile cutting tool is lower than the bottom edge of inner circle of lower annular.

[0004] Further, the annular groove bottom of lower annular is equipped with several spring holes at equal intervals, and the lower end of reset spring is located in spring hole, and the upper end of reset spring is abutted to the lower surface of upper annular.

[0005] Further, the inner circle of upper annular is equipped with annular connecting groove, and the sliding connecting piece is equipped on mobile cutting tool, and the sliding connecting piece of mobile cutting tool is located in annular connecting groove of upper annular and is slidably connected with annular connecting groove, and mobile cutting tool can slide relative to the inner circle of upper annular.

[0006] Further, the lower annular is equipped with fixed handle.

[0007] Further, the lower annular is equipped with fixed handle, and handle through hole is equipped in fixed handle, and the upper end of handle through hole is equipped with vertical upper port;The upper annular is equipped with mobile handle, and mobile handle is located in handle through hole of fixed handle, and the upper end of mobile handle is equipped with convex key, and in the case that reset spring resets, convex key protrudes from the upper port of handle through hole of fixed handle;The convex key of mobile handle is pressed downward, and mobile handle drives upper annular to move downward in parallel.

[0008] Further, the lower surface of lower annular is arc surface, and is more fitted to corneal shape.

[0009] The working principle of the utility model:

[0010] The utility model provides a kind of lens eye astigmatism type intraocular lens preoperative corneal marker, under slit lamp, patient sitting position, eye surface anesthesia, after fixing the head position of patient, let patient orthovision straight ahead, doctor first slit lamp light source is adjusted into horizontal narrow slit, vertically irradiates on cornea, by adjusting slit lamp operating lever, the center of slit light source is aimed at corneal center light spot, the intersection of both ends and corneal limbus is 0 degree and 180 degree direction, then the lower ring is buckled on the cornea of patient as fixed ring by hand holding the fixed handle of the utility model, the center of the upper ring coincides with corneal center light spot, while adjusting the angle of the utility model, the two fixed marking knives of upper ring are coincided with 0 degree and 180 degree of slit lamp horizontal slit light source;Mobile marking knife is movably connected with upper ring, can slide along the inner ring of upper ring, according to the direction of intraocular lens to be implanted, the position of mobile marking knife is adjusted to mark point by comparing the circular scale dial on upper ring;Press upper ring in the direction of cornea, upper ring moves in the direction of cornea relative to lower ring by overcoming reset spring, until the lower end of fixed marking knife and mobile marking knife exceeds the bottom edge of inner ring of lower ring, and mark on cornea, retreat under the reset action of reset spring after marking;Remove the utility model, mark is dyed using ophthalmic common dyeing agent, and the mark of the direction of intraocular lens to be implanted is completed.

[0011] The utility model has the advantages of:

[0012] The utility model can improve the accuracy of marking axis position, mark not only 0° and 180°, but also the direction of intraocular lens to be implanted, mark three axis positions at the same time, avoid the phenomenon of axis position deviation, check the direction of intraocular lens to be implanted during marking process, check again during operation of main knife, avoid confusing direction during position adjustment, avoid the risk of secondary operation, mark axis position is clear and visible, improve the direction accuracy of intraocular lens to be placed and marking efficiency. The utility model can control marking depth by controlling the length of marking knife, only touch corneal epithelium, without corneal nerve, patient will not feel pain, and corneal epithelium is renewable, without affecting recovery. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is whole structure schematic diagram of the utility model embodiment 1;

[0014] Figure 2 It is split structure schematic diagram of the utility model embodiment 1;

[0015] Figure 3 It is sectional structure schematic diagram of the utility model embodiment 1;

[0016] Figure 4 It is sectional structure schematic diagram of the utility model embodiment 1 in pressing state;

[0017] Figure 5For the embodiment 1 upper circular ring local structure schematic diagram of the utility model;

[0018] Figure 6 For the embodiment 1 upper circular ring local disassembly structure schematic diagram of the utility model;

[0019] Figure 7 For the embodiment 2 whole structure schematic diagram of the utility model;

[0020] Figure 8 For the embodiment 3 whole structure schematic diagram of the utility model;

[0021] Figure 9 For the embodiment 3 cross section structure schematic diagram of the utility model;

[0022] Figure 10 For the embodiment 3 press state cross section structure schematic diagram of the utility model;

[0023] 1, lower circular ring 2, upper circular ring 3, annular groove 4, reset spring 5, spring hole 6, circular scale disc 7, fixed marking cutter 8, moving marking cutter 9, annular connecting groove 10, sliding connecting piece 11, fixed handle 12, handle through hole 13, moving handle 14, convex key. Specific implementation

[0024] Embodiment 1,

[0025] Refer to Figures 1-6As shown, the utility model provides a kind of lens eye astigmatism type intraocular lens preoperative corneal marker, including lower ring 1 and upper ring 2, lower ring 1 and upper ring 2 are made of transparent material, do not affect intraoperative observation;The lower ring 1 is fixed ring, and the inner circle of lower ring 1 is equipped with ring groove 3, and upper ring 2 is equipped in the ring groove 3 of lower ring 1, and lower ring 1 and upper ring 2 are coaxially arranged;A plurality of reset springs 4 are arranged between lower ring 1 and upper ring 2, and a corresponding number of spring holes 5 are arranged on the bottom surface of the ring groove 3 of lower ring 1 at equal intervals, the lower end of the reset spring 4 is located in the spring hole 5, and the upper end of the reset spring 4 abuts against the lower surface of the upper ring 2;The upper surface of the upper ring 2 is provided with a circular scale disc 6, and the circular scale disc 6 has a scale of 0-360 ° axis position, with 1 ° as the minimum unit, 5 ° as a large unit, and every 10 ° is marked with a digital reading;The inner circle of the upper ring 2 is provided with two fixed knives 7 and one moving knife 8, the two fixed knives 7 are respectively fixed at 0 ° and 180 ° of the upper ring 2, and the moving knife 8 is movably connected with the upper ring 2 and can slide along the inner circle of the upper ring 2;The knife tip of the fixed knife 7 and the moving knife 8 is arranged downward;The length a between the lower surface of the lower ring 1 and the lower end of the knife tip of the fixed knife 7 and the moving knife 8 is greater than the height b between the bottom surface of the ring groove 3 of the lower ring 1 and the bottom edge of the inner circle of the lower ring 1, a-b=0.01-0.05mm;When the reset spring 4 is reset, the lower end of the knife tip of the fixed knife 7 and the moving knife 8 is higher than the lower edge of the inner circle of the lower ring 1, and when the upper ring 2 is pressed to completely overcome the elastic force of the reset spring 4, the lower end of the knife tip of the fixed knife 7 and the moving knife 8 is lower than the lower edge of the inner circle of the lower ring 1.

[0026] The inner circle of the upper ring 2 is provided with an annular connecting groove 9, and the cross section of the annular connecting groove 9 is T-shaped, the moving knife 8 is provided with a sliding connecting piece 10, and the cross section of the sliding connecting piece 10 is also T-shaped, corresponding to the cross section of the annular connecting groove 9, the sliding connecting piece 10 of the moving knife 8 is clamped in the annular connecting groove 9 of the upper ring 2 and is connected with the annular connecting groove 9, and the moving knife 8 can slide relative to the inner circle of the upper ring 2.

[0027] The utility model designs different diameter sizes of specifications according to the corneal diameter of different patients, and the diameter of the small ring 1 includes: 10.0mm, 10.5mm, 11.0mm, 11.5mm, 12.0mm, 12.5mm, 13.0mm, 13.5mm.

[0028] The working principle of the utility model is as follows:

[0029] The utility model provides a kind of preoperative corneal marker of phakic eye astigmatism type endolaser surgery, under slit lamp microscope, patient sitting position, eye surface anesthesia, after fixing the head position of patient, orthoview straight ahead, doctor first slit lamp light source is adjusted into horizontal narrow slit, vertically irradiates on cornea, by adjusting slit lamp operating lever, the center of slit light source is aimed at corneal center light spot, the intersection of both ends and corneal limbus is 0 degree and 180 degree direction, then handheld the utility model, lower ring 1 is used as fixed ring and is buckled on patient cornea, the center of upper ring 2 coincides with corneal center light spot, adjust the angle of the utility model, the two fixed marking knives 7 of upper ring 2 are respectively coincided with 0 degree and 180 degree of slit lamp horizontal slit light source;Moving marking knife 8 is movably connected with upper ring 2, can slide along the inner ring of upper ring 2, according to the direction of endolaser implantation, the position of moving marking knife 8 is adjusted to mark point by contrast on the circular scale dial 6 of upper ring 2;Press upper ring 2 towards cornea, upper ring 2 moves towards cornea relative to lower ring 1 against reset spring 4, until the lower end of fixed marking knife 7 and moving marking knife 8 exceeds the bottom edge of the inner ring of lower ring 1, and is engraved on cornea, and the depth of engraving is 0.01-0.05mm, and is retracted after engraving under the reset action of reset spring 4;Remove the utility model, and the scratch is dyed with ophthalmic commonly used dyeing agent sodium fluorescein, and the mark of astigmatism type endolaser implantation position is completed.

[0030] Embodiment 2,

[0031] Referring to Figure 7 As shown in the embodiment, the preoperative corneal marker of phakic eye astigmatism type endolaser surgery is based on the embodiment 1, the side of lower ring 1 is provided with fixed handle 11, which is inclined at 40°-55°, to facilitate medical staff to hold and operate the utility model.

[0032] Embodiment 3,

[0033] Referring to Figures 8-10 As shown in the embodiment, the preoperative corneal marker of phakic eye astigmatism type endolaser surgery is based on the embodiment 1, the side of lower ring 1 is provided with fixed handle 11, which is inclined at 40°-55°, to facilitate medical staff to hold and operate the utility model.

[0034] When marking the implantation position of the astigmatism type intraocular lens, the medical staff holds the fixed handle 11 to adjust, and after the fixed cutter 7 and the moving cutter 8 fix the marking position, the convex button 14 of the moving handle 13 is pressed downwards, the moving handle 13 drives the upper ring 2 to move downwards in parallel, the upper ring 2 overcomes the reset spring 4 and moves in the cornea direction relative to the lower ring 1, until the lower end cutter tip of the fixed cutter 7 and the moving cutter 8 exceeds the bottom edge of the inner circle of the lower ring 1, and the cornea is incised, and after the incision is incised, the upper ring 2 is reset upwards under the reset action of the reset spring 4; the utility model is removed, the incision is dyed with the fluorescent sodium commonly used in ophthalmology, and the marking of the implantation position of the astigmatism type intraocular lens is completed.

[0035] The lower surface of the lower ring 1 is an arc surface with the edge being recessed to the center, so that the lower surface of the lower ring 1 is more fitted to the shape of the cornea, and the fixing and operation are facilitated.

Claims

1. A corneal marker for phakic astigmatism endoscopic surgery, characterized by: It comprises a lower circular ring and an upper circular ring; the inner ring of the lower circular ring is provided with a ring groove, and the upper circular ring is arranged in the ring groove of the lower circular ring; several reset springs are arranged between the lower circular ring and the upper circular ring, and the upper surface of the upper circular ring is provided with a circular scale; the inner ring of the upper circular ring is provided with two fixed carving knives and a movable carving knife, the two fixed carving knives are respectively fixed at 0° and 180° of the circular scale, and the movable carving knife is movably connected to the upper circular ring and can slide along the inner ring of the upper circular ring; the length between the fixed carving knife and the movable carving knife from the lower surface of the lower circular ring to the tip of the lower end of the carving knife is greater than the height between the bottom surface of the ring groove of the lower circular ring and the bottom edge of the inner ring of the lower circular ring.

2. The phakic astigmatic preoperative corneal marker according to claim 1, characterized in that: A plurality of spring holes are provided at equal intervals on the bottom surface of the ring groove of the lower ring. The lower end of the reset spring is located in the spring hole, and the upper end of the reset spring abuts against the lower surface of the upper ring.

3. The phakic astigmatic preoperative corneal marker according to claim 1, characterized in that: The inner ring of the upper ring is provided with an annular connecting groove, and the movable carving knife is provided with a sliding connecting piece. The sliding connecting piece of the movable carving knife is located in the annular connecting groove of the upper ring and is slidingly connected to the annular connecting groove. The movable carving knife can slide relative to the inner ring of the upper ring.

4. The phakic astigmatic preoperative corneal marker according to claim 1, characterized in that: The lower ring is provided with a fixed handle.

5. The phakic astigmatic preoperative corneal marker according to claim 1, characterized in that: The lower circular ring is provided with a fixed handle, a handle through hole is provided in the fixed handle, and a vertical upper port is provided at the upper end of the handle through hole; the upper circular ring is provided with a movable handle, the movable handle is located in the handle through hole of the fixed handle, and a protruding button is provided at the upper end of the movable handle. When the reset spring is reset, the protruding button extends from the upper port of the handle through hole of the fixed handle; pressing the protruding button of the movable handle downward causes the movable handle to drive the upper circular ring to move downward in parallel.

6. The phakic astigmatic preoperative corneal marker according to claim 1, characterized in that: The lower surface of the lower ring is an arc-shaped surface.

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