CN211433343U - Femtosecond laser cataract operation marker with level meter - Google Patents

Abstract

A femtosecond laser cataract surgery marker with a level instrument comprises a first ring, a second ring, a third ring and a graduated scale with a level instrument. The built-in gradienter can ensure that the horizontal axis does not incline, and the centering of the vertical axis is determined according to the relative positions of the three hollow rings and the cornea, so that the center of the corneal limbus, the axis of astigmatism and the incision position are accurately marked, and the transverse diameter of the cornea is measured by using the graduated scale with the gradienter. The utility model has the advantages of high precision, simple operation and wide application.

Description

A femtosecond laser cataract surgery marker with a spirit level

technical field

The utility model relates to the technical field of surgical instruments, in particular to a femtosecond laser cataract surgical marker with a spirit level.

Background technique

The errors of femtosecond laser-assisted cataract surgery are mainly caused by the inaccurate positioning of the steep meridian incision, the wrong axial marking of astigmatism, and the off-center capsulorhexis. The currently accepted solution is to use surgical navigation systems to improve the accuracy of surgery. However, this method still has some problems: 1. The accuracy of automatic identification is low. In the case of excessive conjunctival blood vessels, severe blood vessel dilation, conjunctival edema, severe bulbar conjunctiva relaxation, poor blood vessel clarity, etc., the navigation system may have recognition errors, requiring preoperative marking intervention by physicians; 2 It takes a long time. Preoperative measurement, repeated intraoperative blood vessel alignment, intraoperative real-time tracking, and switching of navigation modules will increase the steps and time of surgical operations; 3. Patient selection. Patients with small palpebral fissures, visual fixation disorders, and keratopathy may not be recognized or have large measurement errors;4 the cost is high, which is not conducive to the popularization of refractive cataract surgery.

Utility model content

In order to solve the deficiencies of the prior art, the utility model provides a femtosecond laser cataract surgery marker with a spirit level, which has the advantages of precision, portability, convenient operation, and surface light application.

The utility model provides the following technical solutions: a femtosecond laser cataract surgery marker with a spirit level, comprising a first ring, the top surface of the first ring is provided with an astigmatism axis scale line on the inner side wall, so A spirit level is fixedly connected to the lower side wall of the first ring, a millimeter scale is arranged on the spirit level, a second ring is arranged on the inner side of the first ring, and the top surface of the second ring is close to the outside The wall is also provided with an astigmatism axis scale line, the inner side of the second ring is provided with a third ring, and the outer side wall of the third ring is fixedly connected with four evenly distributed metal bars on the upper, lower, left and right sides. One end of the metal wire away from the third ring is fixedly connected to the inner side wall of the second ring, and the second ring and the outer side wall of the first ring are fixedly connected with the same connecting rod. The other end of the rod is fixedly connected with a handle.

Preferably, the diameter of the first ring is 12.5 mm, the diameter of the second ring is 10 mm, and the diameter of the third ring is 1 mm.

Preferably, the first circular ring, the second circular ring and the third circular ring are arranged concentrically.

Preferably, the side wall of the handle is provided with anti-slip stripes that increase the frictional force of the handle.

Preferably, a plurality of snap rings are fixedly connected to the outer side wall below the first ring, the snap rings are arranged in a "U" shape, and the level is snap-connected to the snap rings.

Preferably, the axis scale lines are arranged in a circular shape, and every 5 degrees is a moment.

Preferably, the side surfaces of the connecting rods are arranged in a "Y" shape.

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

1. In the present invention, the center of the corneal limbus can be marked with a fine marker by hollowing out the first ring, the second ring and the third ring and setting concentric circles to avoid the capsulorhexis being off-center.

2. The built-in level can ensure that the horizontal axis does not tilt. The special diameter setting of the three rings combined with the hollow design can ensure the vertical axis is more accurate. The inner wall of the first ring with a diameter of 12.5mm and the second ring with a diameter of 10mm The outer side walls of the two rings are provided with astigmatism axis scale lines to ensure accurate astigmatism marks for patients with any corneal diameter, greatly improving the accuracy of astigmatism axis and steep meridian incision marks.

3. After determining the 0-degree, 180-degree corneal limbus and the center of the corneal limbus, the corneal transverse diameter can be measured accurately through the millimeter scale on the spirit level.

Description of drawings

Fig. 1 is the top surface structure schematic diagram of the present utility model;

2 is a schematic diagram of the internal structure of the utility model;

FIG. 3 is an enlarged view of part A of FIG. 1 of the present utility model.

Labels in the figure: 1, the first ring; 2, the ruler; 3, the spirit level; 4, the scale; 5, the second ring; 6, the third ring; 7, the wire; 8, the connecting rod; 9, Handle; 10, non-slip pad; 11, snap ring.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, the present utility model provides a technical solution: a femtosecond laser cataract surgery marker with a spirit level, comprising a first ring 1, the top surface of the first ring 1 is provided with a The annular astigmatism axis scale line 2 is set every 5 degrees for a moment. A spirit level 3 is fixedly connected to the lower outer side wall of the first circular ring 1. Each side of the spirit level 3 is provided with a millimeter scale, and the 0 scale is set in the center. It is set every millimeter on the left and right, with a length of 14mm and a width of 2mm. It is used to measure the transverse diameter of the cornea. The first ring 1 and the level 3 are connected by several snap rings 11. The snap rings 11 are arranged in a "U" shape, and the level 3 It is clamped with the snap ring 11, the inner side of the first ring 1 is provided with a second ring 5, the top surface of the second ring 5 is provided with an annular astigmatism axis scale line 2 near the outer side wall, and the second ring 5 The inner side is provided with a third ring 6, used to mark the center of the corneal limbus, the first ring 1, the second ring 5 and the third ring 6 are arranged concentrically, with diameters of 12.5mm, 10mm, 1mm, respectively. The sagittal distance between the three rings 6 and the first ring 1 is 2.8 mm, and four metal wires 7 are evenly distributed and fixedly connected on the outer side wall of the third ring 6, and the metal wires 7 are fixedly connected at one end away from the third ring 6 On the inner side wall of the second ring 5, the second ring 5 and the outer side wall of the first ring 1 are fixedly connected with the same connecting rod 8, the side of the connecting rod 8 is in a "Y" shape, and the other end of the connecting rod 8 It is connected to the handle 9, and the handle 9 is additionally provided with anti-skid stripes 10 to increase the frictional force of the hand.

Working principle: The patient sits upright in front of the slit lamp, with the forehead and jaw close to the slit lamp bracket, looking straight ahead, and after dripping topical anesthetic, the eyelid opener opens the eyelid to fully expose the cornea, pick up the marker through handle 9, and place it on the On the patient's cornea, through the fine adjustment of the handle 9, the level 3 is in a horizontal state, and the centering of the vertical diameter of the cornea is determined according to the relative position between the three rings and the cornea. , incision location, limbal center, 0 degree limbal and 180 degree limbal markings. If necessary, move the scale on the level above or below, and measure the length of the corneal limbus and the center of the corneal limbus at 0 degrees, 180 degrees, which is the corneal transverse diameter, and also helps to check whether the center of the corneal limbus is accurate. In order to avoid occlusion of the bridge of the nose and the orbit, when the marker is used for the right eye (R) marking, the handle is placed on the left side and the level is below; when it is used for the left eye (L) marking, the handle is placed on the right side and the level is above.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a take femto second laser cataract surgery marker of spirit level, includes first ring (1), its characterized in that: the top surface of the first ring (1) is provided with astigmatic axis position scale marks (2) close to the inner side wall, the lower side wall of the first ring (1) is fixedly connected with a level meter (3), the level meter (3) is provided with a millimeter scale (4), the inner side of the first ring (1) is provided with a second ring (5), the top surface of the second ring (5) is also provided with astigmatic axis position scale marks (2) close to the outer side wall, the inner side of the second ring (5) is provided with a third ring (6), the upper, lower, left and right sides of the outer side wall of the third ring (6) are fixedly connected with four metal wires (7) which are uniformly distributed, one end of the metal wire (7) far away from the third ring (6) is fixedly connected to the inner side wall of the second ring (5), and the outer side walls of the second ring (5) and the first ring (1) are fixedly connected with the same connecting rod (8), the other end of the connecting rod (8) is fixedly connected with a handle (9).

2. The femtosecond laser cataract surgery marker with a level gauge as claimed in claim 1, wherein: the diameter of the first circular ring (1) is 12.5mm, the diameter of the second circular ring (5) is 10mm, and the diameter of the third circular ring (6) is 1 mm.

3. The femtosecond laser cataract surgery marker with a level gauge as claimed in claim 1, wherein: the first circular ring (1), the second circular ring (5) and the third circular ring (6) are concentrically arranged.

4. The femtosecond laser cataract surgery marker with a level gauge as claimed in claim 1, wherein: and the side wall of the handle (9) is provided with anti-slip stripes (10) for increasing the hand-held friction force.

5. The femtosecond laser cataract surgery marker with a level gauge as claimed in claim 1, wherein: fixedly connected with a plurality of snap ring (11) on the lateral wall of first ring (1) below, snap ring (11) are "U" type setting, spirit level (3) and snap ring (11) joint set up.

6. The femtosecond laser cataract surgery marker with a level gauge as claimed in claim 1, wherein: the axis position scale marks (2) are arranged in a circular ring shape, and are arranged every 5 degrees.

7. The femtosecond laser cataract surgery marker with a level gauge as claimed in claim 1, wherein: the side surface of the connecting rod (8) is Y-shaped.

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