Eyelid closure corrector

Abstract

The present invention discloses an incomplete eyelid closure corrector, which belongs to a medical auxiliary device for correcting incomplete eyelid closure. The incomplete eyelid closure corrector includes a fixing part, an elastic part and a guide part. One end of the elastic part is fixed to the fixing part, and the other end can be slidably inserted into the guide part. The elastic part is configured to be lifted relative to the fixing part under the action of an external force, and to be reset downward after the external force disappears; the guide part is configured to move upward or reset downward together with the elastic part. The present invention provides a downward force for the upper eyelid through the elastic part, so that the upper eyelid and the lower eyelid can be closed. When the eyes need to be opened, the upper eyelid and the elastic part are controlled by the oculomotor nerve to lift the upper eyelid together. In this way, when the orbicularis oculi muscle loses its contraction function, it is achieved to assist the patient to blink consciously, correct the incomplete eyelid closure, and avoid the symptoms caused by the incomplete eyelid closure.

Description

Technical Field

[0001] The invention relates to a medical auxiliary appliance for correcting incomplete eyelid closure, in particular to an incomplete eyelid closure corrector. Background Art

[0002] Facial nerve paralysis caused by various congenital or acquired factors causes the orbicularis oculi muscle to lose its contractile function, resulting in incomplete eyelid closure. Incomplete eyelid closure can increase the risk of exposure keratitis, corneal infection, and even corneal perforation, and affect the patient's appearance. Patients with mild symptoms need frequent eye drops or eye ointment to moisturize the cornea. In severe cases, tarsal suture or tarsal fusion is often required to reduce the probability of corneal infection. Although tarsal suture and tarsal fusion avoid exposure of the cornea, they block the affected eye, making it impossible for the affected eye to see, and seriously affect the appearance. Therefore, it is necessary to propose a corrective device for correcting eyes with incomplete eyelid closure. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an eyelid occlusion corrector in order to overcome the above-mentioned defects in the prior art.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A corrector for incomplete eyelid closure is characterized in that it includes a fixing part, an elastic part and a guide part; one end of the elastic part is fixedly connected to the fixing part, and the other end can be slidably inserted into the guide part; the elastic part is configured to be lifted relative to the fixing part under the action of an external force, and to return downward after the external force disappears; the guide part is configured to move upward or return downward together with the elastic part.

[0006] In this solution, the guide member provides a moving channel for the elastic member, and the elastic member can slide back and forth in the guide member. The guide member is used to protect the elastic member from extending out of the guide member at the free end of the elastic member, thereby preventing the upper eyelid tissue from being stabbed. The guide member can be made of polymer materials, such as polytetrafluoroethylene.

[0007] Preferably, the elastic member comprises an arc segment; two ends of the arc segment are respectively connected to the fixing member and the guide member; the arc segment is configured to at least partially conform to the outer contour of the upper tarsal plate of the eyelid.

[0008] In this solution, by setting the arc segment to at least partially conform to the outer contour of the upper tarsal plate of the eyelid, the problem of upper tarsal plate deformation caused by the arc segment after surgery is alleviated or avoided.

[0009] Preferably, one end of the arc segment is directly fixed to the fixing member, and the other end is slidably inserted into the guide member. In this solution, the arc segment is directly connected to the fixing member and the guide member, so that the structure of the eyelid occlusion corrector is more compact.

[0010] Preferably, as an alternative to the above solution, the elastic member further comprises a straight segment, and the two ends of the straight segment are respectively connected to the arc segment and the fixing member. In this solution, the arc segment transitions to the fixing member through the straight segment, thereby maintaining a certain distance from the fixing member, which facilitates the fixing member to be installed at a suitable position on the temporal periosteum or the upper edge of the orbital bone.

[0011] Preferably, as an alternative to the above two solutions, the elastic member further comprises an annular segment, one end of which is bent at a certain angle relative to the other end; the two ends of the annular segment are respectively connected to the arc segment and the fixing member. In this solution, the stability of the elastic member is improved by providing the annular segment; in addition, when used, a connection point is provided on the annular segment, and the upper tarsal plate is connected with sutures, which further improves the stability of the connection between the elastic member and the upper tarsal plate.

[0012] Preferably, the elastic member is in the shape of a thread. In this solution, the elastic member is in the shape of a thread, which occupies less space and is easy to fine-tune its shape during surgery to increase its fit with the upper tarsal plate.

[0013] And / or, the elastic member is arc-shaped and pre-shaped, so that during the operation, the elastic member can be fine-tuned according to the outer contour of the patient's upper tarsal plate to more accurately improve the degree of fit between the elastic member and the upper tarsal plate. The pre-shaped can be fixed and heated by the mold.

[0014] And / or, the elastic member is an integrally formed body.

[0015] And / or, the elastic member is made of an elastic material or a shape memory material, wherein: the elastic material making the elastic member includes at least an elastic metal material and an elastic polymer material, and the shape memory material making the elastic member includes at least a shape memory metal material and a shape memory polymer material. The metal material with shape memory used to make the elastic part includes at least: nickel-titanium alloy, titanium-nickel-copper, titanium-nickel-iron, titanium-nickel-chromium, copper-nickel alloy, copper-aluminum alloy, copper-zinc alloy, copper-zinc-aluminum alloy, iron alloy, iron-silicon-carbon alloy, iron-nickel alloy, iron-manganese alloy, iron-manganese-carbon alloy and iron-manganese-silicon alloy; the polymer material with shape memory used to make the elastic part includes at least: polyvinyl alcohol, polycaprolactone, polylactic acid, polydioxanone, polyisoprene, cross-linked polyethylene, polynorbornene, styrene-butadiene copolymer, polyamide, polyethylene terephthalate, polyacrylic acid, polymethacrylic acid, polyacrylamide, poly-N-isopropylacrylamide, epoxy polymer, polydimethylsiloxane, polyaniline, polyurethane, poly-L-lysine, poly-L-glutamic acid, collagen, alginate, hyaluronic acid, chitosan, starch, cellulose and copolymers of any of the above polymer materials.

[0016] Preferably, the elastic member is configured to be controlled by the levator palpebrae superioris muscle of the eyelid, and the external force is provided when the levator palpebrae superioris muscle contracts. When the levator palpebrae superioris muscle relaxes, the elastic member is reset and drives the upper eyelid to move downward and close with the lower eyelid.

[0017] Preferably, the fixing member is provided with a plurality of fixing holes, and the fixing member is fixed to an external carrier at the fixing holes by fasteners; the end of the fixing member close to the elastic member is the first end, and the end opposite to the first end is the second end; and the distribution of the fixing holes is any one of the following:

[0018] (a) the fixing holes are evenly distributed from the first end to the second end;

[0019] (b) one fixing hole is provided at the first end, two fixing holes are provided at the second end, and the axes of the three fixing holes are not in the same plane;

[0020] (c) Two fixing holes are provided at the first end, one fixing hole is provided at the second end, and the axes of the three fixing holes are not in the same plane.

[0021] In the present solution, the fixing piece is fixed to an external carrier at the fixing hole by a fastener to prevent the displacement of the incomplete eyelid closure corrector caused by a person blinking, opening or closing their eyes. The present solution also provides a plurality of fixing holes to improve the stability of the connection between the fixing piece and the temporal periosteum or the upper edge of the orbital bone.

[0022] Preferably, the fixing member is any one of the following shapes: (a) the fixing member is a tube; (b) the fixing member is a column; (c) the fixing member is plate-shaped, and the fixing member includes a first plate portion and a second plate portion fixedly connected to each other, the first plate portion includes a narrow end and a wide end with a smooth transition, the narrow end is connected to the elastic member, and the wide end is connected to the second plate portion; (d) the fixing member is plate-shaped, and the fixing member includes the first plate portion and the second plate portion fixedly connected to each other, the first plate portion includes the narrow end and the wide end with a smooth transition, one end of the second plate portion is connected to the elastic member, and the other end of the second plate portion is connected to the wide end of the first plate portion.

[0023] and / or,

[0024] The connection relationship between the fixing part and the elastic part is any one of the following: (a) the fixing part and the elastic part are welded, so that they are stably connected together; (b) the elastic part is inserted into the fixing part and has an interference fit or a transition fit with the fixing part, so that the elastic part and the fixing part are tightly connected and can be disassembled; (c) the elastic part is threadedly connected to the fixing part, so that they can be repeatedly disassembled and assembled.

[0025] and / or,

[0026] The fixing piece is made of a polymer material or a metal material, wherein the polymer material making the fixing piece includes at least a polytetrafluoroethylene material, and the metal material making the fixing piece includes at least a nickel-titanium alloy and stainless steel.

[0027] Preferably, the corrector further comprises an adjusting member, the shape of which can be arbitrarily adjusted by external action, and two ends of the adjusting member are respectively fixedly connected to the elastic member and the fixing member.

[0028] In the present embodiment, the adjusting member can adjust the position of the elastic member according to the shape of the outer contour of the upper tarsal plate in the patient's eyelid, and the adjusting member can be bent as needed to adjust the curvature, so as to place the elastic member at a suitable position on the tarsal plate. The adjusting member can be made into a V-shape, U-shape, W-shape, wavy, ring-shaped or any bendable shape.

[0029] Preferably, the adjusting member is in a thread-like shape, so that the shape can be adjusted easily and the space occupied is small.

[0030] And / or, the adjusting member is a tube or a column, that is, the adjusting member is a hollow structure or a solid structure.

[0031] And / or, the adjusting member is made of metal material or polymer material, wherein the metal material used to make the adjusting member includes at least stainless steel and nickel-titanium alloy.

[0032] Preferably, the connection relationship between the adjusting member and the fixing member is any one of the following: (a) the adjusting member and the fixing member are welded, so that they are stably connected together; (b) the adjusting member is inserted into the fixing member and has an interference fit or an overfit with the fixing member, so that the adjusting member and the fixing member are tightly connected and can be disassembled; (c) the adjusting member and the fixing member are threadedly connected, so that they can be repeatedly disassembled and assembled.

[0033] and / or,

[0034] The connection relationship between the adjusting member and the elastic member is any one of the following: (a) the adjusting member and the elastic member are welded, so that they are stably connected together; (b) the adjusting member and the elastic member are plugged in, and have an interference fit or a transition fit at the plug-in position, so that the adjusting member and the elastic member are tightly connected and can be disassembled; (c) the adjusting member and the elastic member are threadedly connected, so that they can be repeatedly disassembled and assembled.

[0035] And / or, the guide member provides a sliding channel for the other end of the elastic member to prevent the elastic member from extending out of the guide member, thereby preventing the upper eyelid tissue from being injured.

[0036] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0037] The positive and progressive effects of the present invention are:

[0038] In the present invention, the elastic member provides a downward force for the upper eyelid so that the upper eyelid and the lower eyelid can be closed. When the eyes need to be opened, the levator palpebrae superioris muscle is controlled by the oculomotor nerve to control the upper eyelid and the elastic member to be lifted up together, thereby assisting the patient to blink consciously when the orbicularis oculi muscle loses its contraction function, correcting incomplete eyelid closure, and avoiding diseases caused by incomplete eyelid closure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is an exploded view of a corrector according to an embodiment of the present invention;

[0040] Figure 2 It is a schematic structural diagram of an elastic member and a guide member according to an embodiment of the present invention;

[0041] Figure 3 It is a schematic structural diagram of an elastic member and a guide member according to an embodiment of the present invention;

[0042] Figure 4 It is a schematic structural diagram of an elastic member and a guide member according to an embodiment of the present invention;

[0043] Figure 5 It is a schematic diagram of a partial structure of an elastic member according to an embodiment of the present invention;

[0044] Figure 6 A schematic diagram of the arrangement of fixing holes according to an embodiment of the present invention;

[0045] Figure 7 A schematic diagram of the arrangement of fixing holes according to an embodiment of the present invention;

[0046] Figure 8 A schematic diagram of the arrangement of fixing holes according to an embodiment of the present invention;

[0047] Fig. 9 It is a structural schematic diagram of a fixing member according to an embodiment of the present invention;

[0048] Fig.10 It is a structural schematic diagram of a fixing member according to an embodiment of the present invention;

[0049] Fig.11 It is a structural schematic diagram of a fixing member according to an embodiment of the present invention;

[0050] Fig.12 It is a schematic structural diagram of a fixing member and an adjusting member according to an embodiment of the present invention;

[0051] Fig.13 A first structural schematic diagram of a corrector according to an embodiment of the present invention;

[0052] Fig.14 A second structural schematic diagram of a corrector according to an embodiment of the present invention;

[0053] Fig.15 A third structural schematic diagram of a corrector according to an embodiment of the present invention;

[0054] Fig.16 A fourth structural schematic diagram of a corrector according to an embodiment of the present invention;

[0055] Fig.17 FIG. 5 is a fifth structural schematic diagram of a corrector according to an embodiment of the present invention.

[0056] Description of reference numerals:

[0057] Fixing 1

[0058] First End 11

[0059] Second end 12

[0060] Fixing hole 13

[0061] The first plate portion 14

[0062] Narrow end 141

[0063] Wide end 142

[0064] The second plate portion 15

[0065] Elastic part 2

[0066] Arc segment 21

[0067] Straight line segment 22

[0068] Ring segment 23

[0069] One end of the elastic member 24

[0070] The other end of the elastic member 25

[0071] Guide 3

[0072] Adjustment 4 DETAILED DESCRIPTION

[0073] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the following examples.

[0074] An embodiment of the present invention provides an incomplete eyelid closure corrector, which is arranged at the affected eye of a patient and is used to correct the incomplete eyelid closure and assist the patient to blink consciously.

[0075] See also Figure 1 The corrector comprises a fixing member 1, an elastic member 2 and a guide member 3. One end 24 of the elastic member is fixed to the fixing member 1, and the other end is slidably inserted into the guide member 3. The elastic member 2 is configured to be lifted relative to the fixing member 1 under the action of an external force, and to be reset downward after the external force disappears; the guide member 3 is configured to move upward or reset downward together with the elastic member 2.

[0076] When in use, the fixing member 1 is used to connect the human body structure around the affected eye. Preferably, the fixing member 1 is fixed to the temporal periosteum of the affected eye or the upper edge of the orbital bone, so that during use, the corrector as a whole will not be displaced due to the blinking action of the person, thereby improving the stability of the corrector. There is a smooth transition between any two positions on the surface of the fixing member 1, that is, there is no sharp part at any position of the fixing member 1, thereby reducing the stress on the human body tissue and reducing the foreign body sensation and other discomfort caused by the corrector.

[0077] When in use, the elastic member 2 is arranged on the upper eyelid of the affected eye to assist the upper eyelid to close downward; preferably, the elastic member 2 is connected to the edge of the upper tarsal plate; one end 24 of the elastic member refers to the end of the elastic member 2 close to the fixing member 1, which is located at a position of the upper tarsal plate close to the outer canthus, or, the end extends out of the upper tarsal plate to the temporal side; the other end 25 of the elastic member (that is, the free end of the elastic member mentioned above) refers to the end of the elastic member 2 away from the fixing member 1, which is located at a position of the upper tarsal plate close to the inner canthus or at the middle position of the upper tarsal plate.

[0078] When the elastic member 2 is reset, it provides a downward force to the upper eyelid, so that the upper eyelid and the lower eyelid are closed. When the elastic member 2 is subjected to the external force, it is lifted upward, so that the upper eyelid and the lower eyelid are separated. The external force is realized by the eyelid levator palpebrae superioris muscle controlled by the oculomotor nerve of the human body.

[0079] There is a smooth transition between any two positions on the surface of the elastic member 2, and there is also a smooth transition between the surface of the elastic member 2 and the surface of the fixing member 1, that is, there are no sharp parts at any position of the elastic member 2 and the transition part between the elastic member 2 and the fixing member 1, thereby reducing the stress on human tissue and alleviating the foreign body sensation and other discomfort.

[0080] The guide member 3 has a channel ( Figure 1 (not shown above), the other end 25 of the elastic member is always located in the channel. When the guide member 3 moves upward or resets downward with the elastic member 2, the other end 25 of the elastic member slides in the channel of the guide member 3, thereby protecting the human tissue from being stabbed by the end of the elastic member 2. Preferably, the guide member 3 is fixed to the edge of the upper tarsal plate. The guide member 3 can be set at a position close to the inner canthus of the upper tarsal plate, or it can be set in the middle position of the upper tarsal plate. There is a smooth transition between any two positions on the surface of the guide member 3, thereby reducing the stress on the human tissue, reducing the foreign body sensation and other discomfort. Preferably, the guide member 3 is made of a polymer material or a metal material, wherein the polymer material therein includes at least plastic, such as polytetrafluoroethylene, and the metal material therein includes at least stainless steel and nickel-titanium alloy.

[0081] During use, the corrector of the embodiment of the present invention provides downward force to the upper eyelid through the elastic member 2, so that the upper eyelid and the lower eyelid can be closed, thereby assisting the patient to close the eyes; when the eyes need to be opened, the levator palpebrae superioris muscle is controlled by the oculomotor nerve to control the upper eyelid and the elastic member 2 to be lifted up together. In other words, the embodiment of the present invention utilizes the elastic force of the elastic member 2 to assist the patient to blink consciously, correct the incomplete eyelid closure, and thus avoid the symptoms caused by the incomplete eyelid closure.

[0082] The above is a description of the corrector of the embodiment of the present invention from the structural aspect, and this part further describes it in combination with the application situation. The corrector is implanted into the affected eye through surgery, and the specific operation is as follows:

[0083] The patient lies flat on the operating table, disinfects and covers with sterile towels, and after routine local anesthesia, a skin incision is made along the double eyelid line and the incision is extended about 2 cm inward to separate the orbicularis oculi muscle under the skin, exposing the tarsal plate and the temporal periosteum. Use implantable steel nails to fix the fixing member 1 at the appropriate position of the temporal periosteum or the upper edge of the orbital bone. Place the elastic member 2 at the appropriate position of the tarsal plate. One end of the guide member 3 is sleeved on the other end 25 of the elastic member, and the affected eye is made to open and close the eye multiple times to ensure that the elastic member 2 does not extend out of the guide member 3 during the action, thereby determining the position of the guide member 3 relative to the upper tarsal plate, and then fix the guide member 3 to the upper tarsal plate with sutures. Finally, suture the muscles and skin at the eyelid to complete the operation.

[0084] After the corrector is implanted in the affected eye, the oculomotor nerve innervates the levator palpebrae superioris muscle, and the action of the levator palpebrae superioris muscle on the tarsal plate is used to perform conscious blinking. When the levator palpebrae superioris muscle contracts, it exerts the above-mentioned external force on the tarsal plate. Accordingly, the elastic member 2 acts upward together with the tarsal plate to open the eye. When the levator palpebrae superioris muscle relaxes, the elastic member 2 loses the above-mentioned external force and resets, and drives the upper eyelid to move downward and close with the lower eyelid, thereby achieving conscious blinking when the orbicularis oculi muscle loses its contraction effect. In addition, because the principle of the elastic member 2 assisting the eyelid closure is to rely on its elastic force rather than gravity, the affected eye can still be closed even in supine sleep, and the protective effect of the eyelid on the eyeball can be restored. As expected, after the operation, the patients have restored the effective movement of the eyelids to varying degrees, blinked freely, and the corneal lesions existing before the operation have all healed. The clinical observation effect is satisfactory.

[0085] In an embodiment of the present invention, the corrector can be connected to the human body only by setting connection points on the fixing member 1 and the guide member 3. For example, the fixing member 1 is installed on the temporal periosteum or the outer edge of the orbital bone through implantable steel nails, the guide member 3 is connected to the upper tarsal plate through sutures, and the elastic member 2 is constrained by the fixing member 1 and the guide member 3.

[0086] However, in another embodiment of the present invention, as an alternative means, the corrector can also be connected to the human body by simultaneously providing connection points on the fixing member 1, the guiding member 3 and the elastic member 2. For example, the fixing member 1 is installed on the temporal periosteum or the outer edge of the orbital bone, the guiding member 3 is connected to the upper tarsal plate by sutures, and at least one connection point is further provided on the elastic member 2 and connected to the upper tarsal plate by sutures.

[0087] See also Figure 2 In an embodiment of the present invention, the elastic member 2 includes an arc segment 21, both ends of the arc segment 21 are respectively connected to the fixing member 1 and the guide member 3, and the arc segment 21 is configured to at least partially conform to the outer contour of the upper tarsal plate.

[0088] The arc segment 21 extends from one end to the other end to form an arc-shaped structure, and the arc-shaped structure is designed according to the outer contour of the upper tarsus of a person, so that the arc segment 21 can fit the upper tarsus to a certain extent. If the shape of the arc segment 21 is inconsistent with the shape of the upper tarsus, and the arc segment 21 is only made to fit the upper tarsus by sutures during the operation, the arc segment 21 is easily displaced after the operation and causes the upper tarsus to deform. The curvature of each part of the arc segment 21 can be the same or different.

[0089] Taking into account the individual differences in details of the shape of the tarsal plate, in this embodiment, it is preferred that a portion of the arc segment 21 is attached to the tarsal plate; during the operation, the local curvature of the arc segment 21 can be fine-tuned through external action according to the shape of the tarsal plate of the affected eye, thereby improving the fit between the arc segment 21 and the tarsal plate, and further solving the problem of deformation of the tarsal plate caused by the arc segment 21.

[0090] One end of the arc segment 21 can be slidably inserted into the guide member 3, and the other end is directly or indirectly connected to the fixing member 1. When the arc segment 21 is indirectly connected to the fixing member 1, the elastic member 2 can adopt different means in different embodiments. Two means are given below for illustration. Of course, the structure of the elastic member 2 is not limited to the following two means.

[0091] See also Figure 3 As a means, the elastic member 2 further includes a straight segment 22, and the two ends of the straight segment 22 are respectively connected to the arc segment 21 and the fixing member 1. The straight segment 22 extends from one end thereof to the other end thereof in a straight line. One end of the straight segment 22 is directly connected to the arc segment 21, and the two are welded or integrally formed, and the other end of the straight segment 22 is directly or indirectly connected to the fixing member 1. When the straight segment 22 is directly connected to the fixing member 1, the two are welded or detachably connected.

[0092] See also Figure 4-5 As another means, the elastic member 2 further includes an annular segment 23, one end of the annular segment 23 is bent at a certain angle relative to the other end thereof, and the two ends of the annular segment 23 are respectively connected to the arc segment 21 and the fixing member 1.

[0093] The certain angle is preferably not less than 360°, so that a ring structure is formed on the ring segment 23. Figure 4-5 In the embodiment shown, the certain angle is 360°. The annular structure at this location is used to at least provide a location for connecting the upper tarsal plate. For example, several locations on the annular structure are selected for sutures to connect the elastic member 2 to the upper tarsal plate. The elastic member 2 fixed in this way has higher stability. The annular structure at this location can also be used to determine the relative position relationship between the fixing member 1 and the elastic member 2, and then determine the connection position of the fixing member 1 and the human body.

[0094] Furthermore, one end of the ring segment 23 is directly connected to the arc segment 21, and the two are welded or integrally formed, and the other end of the ring segment 23 is directly or indirectly connected to the fixing member 1. When the ring segment 23 is directly connected to the fixing member 1, the two are welded or detachably connected.

[0095] See also Figure 1-5 In the embodiment of the present invention, the elastic member 2 is preferably filamentary. The filamentary structure occupies less space on the upper eyelid and is convenient for fine-tuning the shape before and during the operation, which is convenient for implantation and reduces the impact on the relevant tissues of the upper eyelid. It is further preferred that the elastic member 2 is a regular columnar or tubular shape, that is, the filamentary elastic member 2 can be either solid or hollow. Of course, in other embodiments, as an alternative means, the elastic member 2 can also be a non-filamentary structure such as a plate or sheet.

[0096] In the embodiment of the present invention, the elastic member 2 is preferably arc-shaped, and the elastic member 2 is pre-shaped according to the shape of the outer contour of the upper tarsal plate, that is, before implantation in the affected eye, the elastic member 2 is pre-shaped, and the shaping can be achieved by fixing the elastic member 2 in a mold and heating it. Admittedly, the "according to the shape of the outer contour of the upper tarsal plate" here is not based on the outer contour shape of the individual's upper tarsal plate, but is based on the overall outer contour of the upper tarsal plate of most people from the perspective of ergonomics. Accordingly, when performing surgery on the individual's upper tarsal plate, the shape of the elastic member 2 is fine-tuned in combination with the specific structure of the individual's upper tarsal plate, that is, although the elastic member 2 is pre-shaped, its local shape can still be fine-tuned by external action according to the specific shape of the upper tarsal plate during the implantation surgery.

[0097] In the embodiment of the present invention, the elastic member 2 is preferably formed as a whole. Of course, in other embodiments, as an alternative means, the elastic member 2 can also be fixed together by welding, plugging or threading different parts.

[0098] In an embodiment of the present invention, the elastic member 2 is preferably made of an elastic material or a shape memory material, and the elastic material used to make the elastic member includes at least an elastic metal material and an elastic polymer material, and the shape memory material used to make the elastic member includes at least a shape memory metal material and a shape memory polymer material.

[0099] Among them, the elastic material is a material with good resilience, which can be either a metal material or a polymer material. The shape memory material is a material with shape memory, which can spontaneously restore its original shape after being deformed under the action of external force, and can be either a metal material or a polymer material. The metal materials with shape memory used to make elastic parts include but are not limited to nickel-titanium alloy, titanium-nickel-copper, titanium-nickel-iron, titanium-nickel-chromium, copper-nickel alloy, copper-aluminum alloy, copper-zinc alloy, copper-zinc-aluminum alloy, iron alloy, iron-silicon-carbon alloy, iron-nickel alloy, iron-manganese alloy, iron-manganese-carbon alloy, and iron-manganese-silicon alloy. The polymer material with shape memory used to make the elastic part includes, but is not limited to, polyvinyl alcohol, polycaprolactone, polylactic acid, polydioxanone, polyisoprene, cross-linked polyethylene, polynorbornene, styrene-butadiene copolymer, polyamide, polyethylene terephthalate, polyacrylic acid, polymethacrylic acid, polyacrylamide, poly-N-isopropylacrylamide, epoxy polymer, polydimethylsiloxane, polyaniline, polyurethane, poly-L-lysine, poly-L-glutamic acid, collagen, alginic acid, hyaluronic acid, chitosan, starch, cellulose and copolymers of any of the above polymer materials.

[0100] In the embodiment of the present invention, the fixing member 1 is provided with a plurality of fixing holes 13, and the fixing member 1 is fixed to an external carrier at the fixing holes 13 by fasteners. Among them, the fixing holes 13 are through holes, and the fasteners are preferably implantable steel nails, which are arranged one by one corresponding to the fixing holes 13, and the implantable steel nails are connected to the external carrier after passing through the fixing holes 13. The external carrier is a part of the human body, and in this embodiment, the external carrier is preferably the temporal periosteum or the outer edge of the orbital bone.

[0101] The end of the fixing member 1 close to the elastic member 2 is the first end 11, and the second end 12 is opposite to the first end 11. The arrangement and number of the fixing holes 13 can be achieved in different ways, and three methods are listed below for illustration. Of course, the arrangement and number of the fixing holes 13 are not limited to the following three methods.

[0102] See also Figure 6 As a first means, the fixing holes 13 are evenly distributed from the first end 11 to the second end 12 of the fixing member 1. In this embodiment, the fixing member 1 is provided with 5 fixing holes 13. Of course, in other embodiments, the number of fixing holes 13 may be 2, 3, 4, etc.

[0103] See also Figure 7As a second means, a fixing hole 13 is provided at the first end 11 of the fixing member 1, and two fixing holes 13 are provided at the second end 12, and the axes of the three fixing holes 13 are not in the same plane, and preferably the axes of the three fixing holes 13 are parallel to each other. In this embodiment, the width of the first end 11 is smaller than the width of the second end 12, so as to facilitate the arrangement of the three fixing holes 13. The position of the fixing holes 13 determines the position where the fixing member 1 is connected to the temporal periosteum. By setting the positional relationship of each fixing hole 13 to the arrangement mode of this means, it is beneficial to stably fix the fixing member 1 to the temporal periosteum or the outer edge of the orbital bone with fewer implantable steel nails.

[0104] See also Figure 8 As a third means, two fixing holes 13 are provided at the first end 11 of the fixing member, and one fixing hole 13 is provided at the second end 12, and the axes of the three fixing holes 13 are not in the same plane, and preferably the axes of the three fixing holes 13 are parallel to each other. In this embodiment, the width of the first end 11 is greater than the width of the second end 12, so as to facilitate the arrangement of the three fixing holes 13. The position of the fixing holes 13 determines the position where the fixing member 1 is connected to the temporal periosteum. By setting the positional relationship of each fixing hole 13 to the arrangement mode of this means, it is beneficial to stably fix the fixing member 1 to the temporal periosteum or the outer edge of the orbital bone with fewer implantable steel nails.

[0105] In the embodiment of the present invention, the fixing member 1 is preferably any one of a pipe, a column and a plate. Three methods are listed below for further explanation. Of course, the shape of the fixing member 1 is not limited to the following three methods.

[0106] See also Fig. 9 In the first method, the fixing member 1 is a column, preferably a cuboid, and the fixing holes 13 are evenly distributed from the first end 11 to the second end 12. It is further preferred that the edges of the fixing member 1 are chamfered to make the surface of the fixing member 1 more rounded.

[0107] See also Fig.10 In the second method, the fixing member 1 is a plate member, and includes a first plate portion 14 and a second plate portion 15 fixedly connected to each other. The first plate portion 14 includes a narrow end 141 and a wide end 142 with a smooth transition. The narrow end 141 is connected to the elastic member 2, and the wide end 142 is connected to the second plate portion 15.

[0108] The first plate portion 14 and the second plate portion 15 are integrally formed; the narrow end 141 is the above-mentioned Figure 7The first end 11 of the first plate portion 14; the wide end 142 of the first plate portion 14 is connected to the second plate portion 15; the fixing member 1 in the present means is provided with a fixing hole 13 at the narrow end 141 of the first plate portion 14, and two fixing holes 13 are arranged at intervals on the second plate portion 15, and the axes of the three fixing holes 13 are parallel and not in the same plane, which is beneficial to improve the stability of the connection between the fixing member 1 and the temporal periosteum or the outer edge of the orbital bone while reducing the space occupied by the fixing member 1.

[0109] See also Fig.11 The third means differs from the second means in that: the second plate portion 15 is directly or indirectly connected to the elastic member 2, the wide end 142 of the first plate portion 14 is connected to the second plate portion 15; the first end 11 is located on the second plate portion 15, and the second end 12 is the narrow end 141. Other parts of the third means are the same as the second means, and will not be described again.

[0110] In the embodiment of the present invention, the fixing member 1 is made of a polymer material or a metal material, wherein the polymer material making the fixing member includes at least polytetrafluoroethylene, and the metal material making the fixing member includes at least nickel-titanium alloy and stainless steel.

[0111] On the basis of any of the above embodiments, when the fixing member 1 and the elastic member 2 are directly connected, any of the following means may be adopted: (a) the fixing member 1 and the elastic member 2 are welded; (b) the elastic member 2 is inserted into the fixing member 1 and has an interference fit or transition fit with the fixing member 1; (c) the fixing member 1 and the elastic member 2 are threadedly connected. The fixing member 1 and the elastic member 2 are stably connected together through any of the above three connection methods.

[0112] See also Fig.12 In an embodiment of the present invention, the corrector further includes an adjusting member 4, the shape of which can be arbitrarily adjusted by external action, and the two ends of the adjusting member 4 are respectively fixed to the elastic member 2 and the fixing member 1. Among them, the adjusting member 4 has a certain flexibility, and its curvature can be adjusted arbitrarily, for example, it can be adjusted to a V-shape, a U-shape, a W-shape, a wavy shape, a ring shape, and other curved shapes. The relative position relationship between the fixing member 1 and the elastic member 2 is adjusted by changing the shape of the adjusting member 4. Accordingly, during the implantation process, after the connection relationship between the fixing member 1 and the temporal periosteum is determined, the elastic member 2 can be located at a suitable position on the upper tarsal plate by changing the shape of the adjusting member 4. There is a smooth transition between any two positions on the surface of the adjusting member 4, thereby reducing the stress on human tissues and reducing the foreign body sensation and other discomforts.

[0113] The adjusting member 4 is welded to the elastic member 2; or, one of the two is provided with a hole, and the other is inserted into the hole with an interference fit or a transition fit; or, one of the two includes a pipe section with an internal thread, and the other includes a shaft section with an external thread, and the pipe section there is threadedly connected with the shaft section there.

[0114] The adjusting member 4 is welded to the fixing member 1; or, the two are plugged together and have an interference fit or transition fit at the plugged-in position; or, one of the two includes a pipe section with an internal thread and the other includes a shaft section with an external thread, and the pipe section there is threadedly connected to the shaft section there.

[0115] The adjusting member 4 is preferably filamentary in order to save space. The adjusting member 4 can be a pipe or a column, that is, the adjusting member 4 can be a hollow structure or a solid structure. The adjusting member 4 is made of metal material or polymer material, wherein the metal material at this location includes at least stainless steel and nickel-titanium alloy.

[0116] The above description describes the structures of the fixing member 1, the elastic member 2, the guide member 3 and the adjusting member 4 and the technical connection between them. Different structures of the fixing member 1, different structures of the elastic member 2, different structures of the guide member 3 and different structures of the adjusting member 4 can be combined to form different correctors. Figure 13-17 Five types of correctors are listed for further explanation.

[0117] like Fig.13 As shown, the corrector includes a fixing member 1, an elastic member 2 and a guide member 3 connected in sequence. The fixing member 1 is plate-shaped and includes a first plate portion 14 and a second plate portion 15. The narrow end 141 of the first plate portion 14 is provided with a fixing hole 13, and the second plate portion 15 is provided with two fixing holes 13. The axes of the three fixing holes 13 are parallel and not located in the same plane. The elastic member 2 is composed of an arc segment 21 and a straight segment 22 formed in one piece, and the straight segment 22 is directly connected to the fixing member 1; the elastic member 2 adopts an elastic wire of nickel-titanium alloy. The guide member 3 is tubular, and one end 24 of the elastic member is inserted into the guide member 3 and can move forward and backward inside it, but will not pass through the guide member 3. In this way, the guide member 3 provides a movement channel for the elastic member 2 and ensures that the elastic member 2 does not pass through the guide member 3 and injure the tissue on the eyelid.

[0118] like Fig.14 As shown, the corrector includes a fixing member 1, an adjusting member 4, an elastic member 2 and a guide member 3 connected in sequence. The fixing member 1 is plate-shaped and includes a first plate portion 14 and a second plate portion 15. The narrow end 141 of the first plate portion 14 is provided with a fixing hole 13, and the second plate portion 15 is provided with two fixing holes 13. The axes of the three fixing holes 13 are parallel and not located in the same plane. The elastic member 2 is composed of an arc segment 21, and the arc segment 21 is directly connected to the adjusting member 4; the elastic member 2 is an elastic wire made of a copper-zinc alloy. The guide member 3 is tubular, and one end 24 of the elastic member is inserted into the guide member 3 and can move forward and backward inside it, but will not pass through the guide member 3. In this way, the guide member 3 provides a movement channel for the elastic member 2 and ensures that the elastic member 2 does not pass through the guide member 3 and injure the tissue on the eyelid.

[0119] like Fig.15As shown, the corrector includes a fixing member 1, an elastic member 2 and a guide member 3 connected in sequence. The fixing member 1 is in the shape of a rectangular parallelepiped, and the edges of the fixing member 1 are chamfered. The fixing member 1 has 5 fixing holes 13 evenly distributed from the first end 11 to the second end 12. The elastic member 2 is composed of an arc segment 21 and an annular segment 23 formed in one piece; the elastic member 2 uses an elastic wire of an iron-silicon-carbon alloy. The guide member 3 is tubular, and one end 24 of the elastic member is inserted into the guide member 3 and can move forward and backward inside the guide member 3, but will not pass through the guide member 3. In this way, the guide member 3 provides a movement channel for the elastic member 2, and ensures that the elastic member 2 does not pass through the guide member 3 and injure the tissue on the eyelid.

[0120] like Fig.16 As shown, the corrector includes a fixing member 1, an adjusting member 4, an elastic member 2 and a guide member 3 connected in sequence. The fixing member 1 is in the shape of a rectangular parallelepiped, and the edges of the fixing member 1 are chamfered. The fixing member 1 has 5 fixing holes 13 evenly distributed from the first end 11 to the second end 12. The elastic member 2 is composed of an arc segment 21 and an annular segment 23 formed in one piece; the elastic member 2 uses an elastic wire of an iron-manganese alloy. The guide member 3 is a pipe fitting, and one end 24 of the elastic member is inserted into the guide member 3 and can move forward and backward inside the guide member 3, but will not pass through the guide member 3. In this way, the guide member 3 provides a movement channel for the elastic member 2, and ensures that the elastic member 2 does not pass through the guide member 3 and injure the tissue on the eyelid.

[0121] like Fig.17 As shown, the corrector includes a fixing member 1, an elastic member 2 and a guide member 3 connected in sequence. The second plate portion 15 of the fixing member 1 is connected to the elastic member 2, and the wide end 142 of the first plate portion 14 is connected to the second plate portion 15. The second plate portion 15 is provided with two fixing holes 13, and the first plate portion 14 is provided with a fixing hole 13, and the axes of the three fixing holes 13 are parallel and not coplanar. The elastic member 2 is composed of an integrally formed arc segment 21 and a straight segment 22, and the straight segment 22 is directly connected to the fixing member 1. The elastic member 2 adopts an elastic wire of styrene-butadiene copolymer. The guide member 3 is tubular, and one end of the elastic member 2 is inserted into the guide member 3 and can move forward and backward inside it, but will not pass through the guide member 3. In this way, the guide member 3 provides a movement channel for the elastic member 2, and ensures that the elastic member 2 does not pass through the guide member 3 and injure the tissue on the eyelid.

[0122] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A device for correcting incomplete eyelid closure, characterized in that: It comprises a fixing part, an elastic part and a guiding part; one end of the elastic part is fixedly connected to the fixing part, and the other end can be slidably inserted into the guiding part, and the surface of the elastic part and the surface of the fixing part have a smooth transition; the elastic part is configured to be lifted relative to the fixing part under the action of an external force, and to return downward after the external force disappears; the guiding part is configured to move upward or return downward together with the elastic part.

2. The corrector according to claim 1, characterized in that The elastic member comprises an arc segment; two ends of the arc segment are respectively connected to the fixing member and the guide member; the arc segment is configured to at least partially conform to the outer contour of the upper tarsal plate of the eyelid.

3. The corrector according to claim 2, characterized in that: One end of the arc segment is directly fixed to the fixing member, and the other end is slidably inserted into the guide member; or, The elastic member further comprises a straight segment, and two ends of the straight segment are respectively connected to the arc segment and the fixing member; or, The elastic member further comprises an annular segment, one end of which is bent at a certain angle relative to the other end; and both ends of the annular segment are respectively connected to the arc segment and the fixing member.

4. The corrector according to claim 1, characterized in that: The elastic member is in the form of a thread; and / or, the elastic member is arc-shaped and pre-shaped; And / or, the elastic member is an integrally formed body; And / or, the elastic member is made of an elastic material or a shape memory material, wherein: the elastic material used to make the elastic member at least includes a metal material with elasticity and a polymer material with elasticity, the shape memory material used to make the elastic member at least includes a metal material with shape memory and a polymer material with shape memory, the metal material with shape memory used to make the elastic member at least includes one of nickel-titanium alloy, titanium-nickel-copper, titanium-nickel-iron, titanium-nickel-chromium, copper-nickel alloy, copper-aluminum alloy, copper-zinc alloy, and iron alloy; The polymer material with shape memory of the elastic member includes at least one of polyvinyl alcohol, polycaprolactone, polylactic acid, polydioxanone, polyisoprene, cross-linked polyethylene, polynorbornene, styrene-butadiene copolymer, polyamide, polyethylene terephthalate, polyacrylic acid, polymethacrylic acid, polyacrylamide, poly-N-isopropylacrylamide, epoxy polymer, polydimethylsiloxane, polyaniline, polyurethane, poly-L-lysine, poly-L-glutamic acid, collagen, alginic acid, hyaluronic acid, chitosan, starch and cellulose.

5. The orthosis according to claim 1, characterized in that: The elastic member is configured to be controlled by the levator palpebrae superioris muscle of the eyelid, and provides the external force when the levator palpebrae superioris muscle contracts. When the levator palpebrae superioris muscle relaxes, the elastic member is reset and drives the upper eyelid to move downward and close with the lower eyelid.

6. The orthosis according to claim 1, characterized in that The fixing member is provided with a plurality of fixing holes, and the fixing member is fixed to an external carrier at the fixing holes through fasteners; the end of the fixing member close to the elastic member is the first end, and the end opposite to the first end is the second end; and the distribution of the fixing holes is any one of the following: (a) the fixing holes are evenly distributed from the first end to the second end; (b) one fixing hole is provided at the first end, two fixing holes are provided at the second end, and the axes of the three fixing holes are not in the same plane; (c) Two fixing holes are provided at the first end, one fixing hole is provided at the second end, and axes of the three fixing holes are not in the same plane.

7. The orthosis according to claim 6, characterized in that The fixing member is any one of the following shapes: (a) the fixing member is a tube; (b) the fixing member is a column; (c) the fixing member is plate-shaped, and the fixing member includes a first plate portion and a second plate portion fixedly connected to each other, the first plate portion includes a narrow end and a wide end with a smooth transition, the narrow end is connected to the elastic member, and the wide end is connected to the second plate portion; (d) the fixing member is plate-shaped, and the fixing member includes the first plate portion and the second plate portion fixedly connected to each other, the first plate portion includes the narrow end and the wide end with a smooth transition, one end of the second plate portion is connected to the elastic member, and the other end of the second plate portion is connected to the wide end of the first plate portion; and / or, The connection relationship between the fixing member and the elastic member is any one of the following: (a) the fixing member and the elastic member are welded; (b) the elastic member is inserted into the fixing member and has an interference fit or a transition fit with the fixing member; (c) the elastic member and the fixing member are threadedly connected; and / or, The fixing piece is made of a polymer material or a metal material, wherein the polymer material making the fixing piece includes at least polytetrafluoroethylene, and the metal material making the fixing piece includes at least nickel-titanium alloy and stainless steel.

8. The corrector according to any one of claims 1 to 7, characterized in that: The corrector further comprises an adjusting member, the shape of which can be arbitrarily adjusted by external action, and two ends of the adjusting member are respectively fixedly connected to the elastic member and the fixing member.

9. The orthosis according to claim 8, characterized in that The adjusting member is in the shape of a thread; And / or, the adjusting member is a pipe or a column; And / or, the adjusting member is made of metal material or polymer material, wherein the metal material used to make the adjusting member includes at least stainless steel and nickel-titanium alloy.

10. The orthosis according to claim 8, characterized in that The connection relationship between the adjusting member and the fixing member is any one of the following: (a) the adjusting member and the fixing member are welded; (b) the adjusting member is inserted into the fixing member and has an interference fit or an overfit with the fixing member; (c) the adjusting member and the fixing member are threadedly connected; and / or, The connection relationship between the adjusting member and the elastic member is any one of the following: (a) the adjusting member and the elastic member are welded; (b) the adjusting member and the elastic member are plugged in and have an interference fit or transition fit at the plugging position; (c) the adjusting member and the elastic member are threadedly connected; and / or, The guide member provides a sliding channel for the other end of the elastic member.

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