Lacrimal point stenosis resection device

Abstract

The utility model discloses a lacrimal point stenosis resection device which comprises a resection operating rod, an operating rod inner cavity and a resection sleeve, a resection guide rod penetrates through the resection sleeve and is movably sleeved with the resection sleeve, a guide rod outer ejecting device is installed in the operating rod inner cavity, and a resection driving device is connected to the resection guide rod located in the operating rod inner cavity. The other end of the cutting guide rod is arranged to be an arc-surface end, a cutting notch is formed in the surface, located on the inner side of the arc-surface end, of the cutting guide rod, and a cutting movable cutter is fixed to the surface of the arc-surface end; when the lacrimal punctum is cut off, the cut-off notch extends into the lacrimal punctum through the cut-off guide rod, when the residual film falls into the cut-off notch, the cut-off guide rod completely enters the cut-off sleeve through the cut-off driving device and the guide rod outer jacking device, the residual film is cut off under the action of the cut-off movable cutter, and the narrow part of the lacrimal punctum is cleaned. The smooth outer wall of the excision guide rod cannot cause damage to the lacrimal passage, operation is convenient and easy, meanwhile, tissue damage can be reduced, and intraocular diseases are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of intraocular surgical instruments, in particular to a lacrimal punctum stenosis removal device. Background Art

[0002] The lacrimal puncta, also known as the lacrimal puncta or lacrimal foramina, are the openings of the lacrimal ducts located above the lacrimal papillae at the upper and lower eyelid margins. They are round or slightly oval pore-like structures with a diameter of 0.2 to 0.3 mm, and they expand with age. The function of the lacrimal puncta is to guide tears from the eyes into the lacrimal ducts, and eventually flow into the nasal cavity or out of the body. If the lacrimal puncta are narrow or closed due to inflammation, scarring, trauma and other factors, it will lead to frequent tears, which is clinically known as epiphora. In addition to causing strong eye discomfort to patients, epiphora can also easily cause chronic irritant conjunctivitis, eczematous dermatitis of the lower eyelids and cheeks, etc. if the eyes are soaked in tears for a long time. When patients have epiphora, they will wipe their tears frequently. Long-term wiping can cause ectropion of the eyelids, which will not only further aggravate the symptoms of epiphora and cause blockage of the lacrimal puncta, but also affect the facial appearance. At this time, special treatment is required.

[0003] When treating stenotic or blocked puncta, residual membranes of the puncta can often be observed with the help of a high-power magnifying glass. The current treatment method is to insert scissors from the puncta remnants and cut and remove them until the puncta are opened. However, the puncta are easily irregular during the cutting process, thus affecting the normal outflow of tears. In addition, the scissors are relatively sharp and can easily scratch the puncta, causing damage to the tear duct, which further causes epiphora problems. Alternatively, a trabeculotomy can be used for treatment, but the cutting blade can easily push the puncta, causing problems such as failure to cut or unsatisfactory cutting position, resulting in a long cleaning time. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a lacrimal punctum stenosis removal device which will not cause damage to the lacrimal duct, is convenient and simple to operate, and can reduce tissue damage and avoid causing intraocular complications.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a lacrimal punctum stenosis resection device comprises a resection operating rod, the end of the resection operating rod is fixedly connected to the resection sleeve, the resection operating rod is provided with an operating rod inner cavity connected to the resection sleeve, a resection guide rod is movably sleeved through the resection sleeve, one end of the resection guide rod extends into the operating rod inner cavity, and a guide rod outer top device used in conjunction with the resection guide rod is installed in the operating rod inner cavity, a resection drive device is connected to the resection guide rod located in the operating rod inner cavity, and the resection drive device extends to the outside of the resection operating rod, the other end of the resection guide rod is set as an arc surface end head, the surface of the resection guide rod located on the inner side of the arc surface end head is provided with a resection recess, and a resection moving knife extending toward the resection recess is fixed on the surface of the arc surface end head.

[0006] As a preferred technical solution, the guide rod outer push device includes a fixed limit plate fixed in the inner cavity of the operating rod, a movable limit plate is arranged opposite to the fixed limit plate, and a guide rod outer push spring is arranged between the fixed limit plate and the movable limit plate.

[0007] As a preferred technical solution, the movable limiting plate is fixed to the end of the cutting guide rod.

[0008] As a preferred technical solution, at least two guide rod limiting sleeves are provided in the cutting sleeve, and the cutting guide rod is movably arranged to penetrate each of the guide rod limiting sleeves.

[0009] As a preferred technical solution, the cutting drive device includes at least one cutting handle connected to the cutting guide rod, the cutting handle extends to the outside of the cutting operating rod, and an adapting long hole corresponding to the cutting handle is provided through the cutting handle.

[0010] As a preferred technical solution, the end of the resection sleeve is fixedly connected with an arc-shaped sleeve end plate, and the sleeve end plate is provided with a guide rod avoidance recess for facilitating the resection guide rod to move back and forth, and a resection fixed knife cooperating with the resection moving knife is fixed at the guide rod avoidance recess.

[0011] As an improvement to the above technical solution, the movable cutting knife and the fixed cutting knife are respectively configured as arc-shaped blades.

[0012] Due to the adoption of the above technical scheme, the lacrimal punctum stenosis resection device includes a resection operating rod, the end of the resection operating rod is fixedly connected to the resection sleeve, the resection operating rod is provided with an operating rod inner cavity connected to the resection sleeve, a resection guide rod is movably sleeved through the resection sleeve, one end of the resection guide rod extends into the operating rod inner cavity, and a guide rod outer top device used in conjunction with the resection guide rod is installed in the operating rod inner cavity, a resection drive device is connected to the resection guide rod located in the operating rod inner cavity, and the resection drive device extends to the outside of the resection operating rod, the other end of the resection guide rod is set as an arc surface end head, and the surface of the resection guide rod located on the inner side of the arc surface end head is provided with a cutting In addition to the notch, a resection knife extending toward the resection notch is fixed on the surface of the arc surface end; the utility model has the following beneficial effects: in a natural state, the arc surface end, the resection knife and part of the resection notch are located on the outside of the resection sleeve, and when the residual membrane that causes the stenosis of the lacrimal point is resected, the above structure is extended into the lacrimal point through the resection sleeve, and when the residual membrane falls into the resection notch, the resection guide rod is completely inserted into the resection sleeve through the cooperation of the resection drive device and the guide rod outer push device, and at the same time, the residual membrane is cut off under the action of the resection knife, so that the stenosis of the lacrimal point is cleaned, the outer wall of the resection guide rod is smooth and will not cause damage to the lacrimal duct, the operation is convenient and simple, and at the same time, it can reduce tissue damage and avoid causing intraocular complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 yes Figure 1 A schematic diagram of the enlarged cross-section structure at point A in the middle;

[0016] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0017] Figure 4 It is a partial enlarged structural schematic diagram of the cut-off guide rod end and related structures in the embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the cut-off sleeve end in an embodiment of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the embodiment of the utility model in which the end of the guide rod is cut off;

[0020] In the figure: 1-cutting operating rod; 2-cutting sleeve; 3-inner cavity of operating rod; 4-cutting guide rod; 5-fixed limit plate; 6-movable limit plate; 7-guide rod outer top spring; 8-guide rod limit sleeve; 9-cutting handle; 10-adapting long hole; 11-arc end; 12-cutting notch; 13-cutting movable knife; 14-sleeve end plate; 15-guide rod avoidance notch; 16-cutting fixed knife. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0022] like Figures 1 to 4 As shown, the lacrimal punctum stenosis excision device is used to excise and clean the residual membrane that causes the lacrimal punctum stenosis of the eye, and specifically includes an excision operating rod 1. Anti-skid patterns can be set on the surface of the excision operating rod 1 to increase the friction between it and the hands of medical staff, which can play an anti-skid role and help improve the stability of the residual membrane excision operation. A resection sleeve 2 is fixedly connected to the end of the excision operating rod 1. An operating rod inner cavity 3 connected to the excision sleeve 2 is provided in the excision operating rod 1. A resection guide rod 4 is movably sleeved through the excision sleeve 2. One end of the excision guide rod 4 extends into the operating rod inner cavity 3, and a guide rod outer push device used in conjunction with the excision guide rod 4 is installed in the operating rod inner cavity 3. Under the action of the guide rod outer push device, when this embodiment is not in use, the end of the excision guide rod 4 is always on the outside of the excision sleeve 2, ready for use.

[0023] Specifically, the guide rod outer push device includes a fixed limit plate 5 fixed in the inner cavity 3 of the operating rod, a movable limit plate 6 is arranged opposite to the fixed limit plate 5, and a guide rod outer push spring 7 is arranged between the fixed limit plate 5 and the movable limit plate 6. The guide rod outer push spring 7 is set as a compression spring, which has a certain elastic force and can always keep the fixed limit plate 5 and the movable limit plate 6 in a state of separation. The movable limit plate 6 can be fixed to the end of the cutting guide rod 4 so that it can move back and forth with the cutting guide rod 4, so as to realize the use of the elastic force of the guide rod outer push spring 7 to push the cutting guide rod 4 outward, so that the end of the cutting guide rod 4 is kept outside the cutting sleeve 2 under normal conditions. At least two guide rod limit sleeves 8 are arranged in the cutting sleeve 2, and the cutting guide rod 4 penetrates each of the guide rod limit sleeves 8 and is movably arranged to prevent the cutting guide rod 4 from swinging when the cutting sleeve 2 moves, which is conducive to the precise control of the end of the cutting guide rod 4 by the cutting operating rod 1.

[0024] The cutting guide rod 4 located in the inner cavity 3 of the operating rod is connected to a cutting drive device, and the cutting drive device extends to the outside of the cutting operating rod 1. The cutting drive device can compress the guide rod outer top spring 7 to retract the outer end of the cutting guide rod 4 into the cutting sleeve 2, thereby completing the cutting of the residual membrane in the lacrimal punctum.

[0025] Specifically, the excision drive device includes at least one excision handle 9 connected to the excision guide rod 4, the excision handle 9 extends to the outside of the excision operating rod 1, and a matching long hole 10 corresponding to the excision handle 9 is provided through the excision handle 9. In this embodiment, in order to ensure the uniformity of the force of the entire device during operation, two excision handles 9 are relatively provided. When in use, the two excision handles 9 are pressed to make them close together toward the excision operating rod 1. Under the obstruction of the lower wall of the matching long hole 10, the inner ends of the two excision handles 9 will pull the excision guide rod 4 upward, so that its end enters the excision sleeve 2, thereby achieving the cleaning of the residual film in the lacrimal point. The excision operating rod 1 can also be clamped between two fingers, and the two excision handles 9 are pulled up by two fingers at the same time, driving the excision guide rod 4 connected thereto to compress the guide rod outer top spring 7 and move upward, which can also achieve the cleaning of the residual film in the lacrimal point, and the operation is convenient and simple.

[0026] The other end of the excision guide rod 4 described in this embodiment is set as an arc surface end 11, that is, the end of the excision guide rod 4 located outside the excision sleeve 2 is set as the arc surface end 11, so that the outer wall of the excision guide rod 4 is smooth, which will not cause damage to the lacrimal duct, and at the same time can reduce tissue damage and avoid causing intraocular complications. The surface of the excision guide rod 4 located inside the arc surface end 11 is provided with an excision notch 12, and a resection moving knife 13 extending toward the excision notch 12 is fixed on the surface of the arc surface end 11. When performing the excision of the residual film in the lacrimal punctum, after the end of the excision guide rod 4 enters the lacrimal punctum, the residual film in the lacrimal punctum will enter the excision notch 12. At this time, the two excision handles 9 are pressed to retract the excision guide rod 4, and during its retraction process, it cooperates with the excision moving knife 13 to complete the cutting of the residual film. The excision of the residual film can be removed from the lacrimal punctum by separating the device from the lacrimal punctum.

[0027] like Figure 5 and Figure 6 As shown, an arc-shaped sleeve end plate 14 can also be fixedly connected to the end of the excision sleeve 2, and the sleeve end plate 14 is provided with a guide rod avoidance recess 15 for facilitating the recision guide rod 4 to move back and forth, and a cutting fixed knife 16 cooperating with the excision movable knife 13 is fixed at the guide rod avoidance recess 15. Through the cooperation of the excision fixed knife 16 and the excision movable knife 13, the cutting of the residual film can be accelerated, making the excision process of the residual film smoother and faster. Based on the arc characteristics of the arc surface end 11 and the excision sleeve 2, the excision movable knife 13 and the excision fixed knife 16 are respectively set as arc blades with a large contact surface, so that the excision operation of the residual film is smoother.

[0028] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

Claims

1. A lacrimal punctum stenosis excision device, comprising an excision operating rod, the end of which is fixedly connected to an excision sleeve, characterized in that: The resection operating rod is provided with an operating rod inner cavity which is connected with the resection sleeve, and a resection guide rod is movably sleeved through the resection sleeve, one end of the resection guide rod extends into the operating rod inner cavity, and a guide rod outer top device used in conjunction with the resection guide rod is installed in the operating rod inner cavity, a resection drive device is connected to the resection guide rod located in the operating rod inner cavity, and the resection drive device extends to the outside of the resection operating rod, the other end of the resection guide rod is arranged as an arc surface end head, and a resection notch is arranged on the surface of the arc surface end head, and a resection moving knife extending toward the resection notch is fixed on the surface of the arc surface end head.

2. The lacrimal punctum stenosis removal device according to claim 1, characterized in that: The guide rod outer push device comprises a fixed limit plate fixed in the inner cavity of the operating rod, a movable limit plate is arranged opposite to the fixed limit plate, and a guide rod outer push spring is arranged between the fixed limit plate and the movable limit plate.

3. The lacrimal punctum stenosis removal device according to claim 2, characterized in that: The movable limiting plate is fixed to the end of the cutting guide rod.

4. The lacrimal punctum stenosis removal device according to claim 1, characterized in that: At least two guide rod limiting sleeves are arranged in the resection sleeve, and the resection guide rod passes through each of the guide rod limiting sleeves and is movably arranged.

5. The lacrimal punctum stenosis removal device according to claim 2, characterized in that: The cutting drive device comprises at least one cutting handle connected to the cutting guide rod, the cutting handle extends to the outside of the cutting operation rod, and a matching long hole corresponding to the cutting handle is provided through the cutting handle.

6. The lacrimal punctum stenosis removal device according to claim 1, characterized in that: The end of the resection sleeve is fixedly connected with an arc-shaped sleeve end plate, and the sleeve end plate is provided with a guide rod avoidance recess for facilitating the resection guide rod to move back and forth, and a resection fixed knife cooperating with the resection moving knife is fixed at the guide rod avoidance recess.

7. The lacrimal punctum stenosis removal device according to claim 6, characterized in that: The movable cutting knife and the fixed cutting knife are respectively configured as arc-shaped blades.

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