Implant for correcting severe blepharoptosis

Abstract

The invention discloses an implant for correction of severe upper blepharoptosis, comprising: a lifting line for connecting to the upper edge of a tarsal plate; the wire puller is used for accommodating the lifting wire; wherein the wire puller is provided with an adjusting assembly used for adjusting the wire outlet length of the lifting wire and a hard pipe used for guiding the lifting wire to be branched, the hard pipe is in a Y shape, the lifting wire is arranged on the hard pipe in a penetrating mode, two outlets of the hard pipe are connected with soft film pipes in a sealed mode, the lifting wire can penetrate through the soft film pipes, and outlets of the soft film pipes are connected with the lifting wire in a sealed mode. The elastic force of the lifting line can be adjusted, so that the suspension acting force can be adaptively and telescopically adjusted based on actions.

Description

Technical Field

[0001] The present invention relates to the field of ophthalmic surgery, and in particular to an implant for correcting severe ptosis. Background Art

[0002] Ptosis is a common eyelid disease that not only affects the patient's appearance but may also have adverse effects on visual function.

[0003] At present, common corrective surgical methods include levator palpebrae superioris muscle-related surgery and frontalis muscle-related surgery. For mild ptosis with a muscle strength assessment of ≥7mm, the levator palpebrae superioris muscle can be advanced or shortened for correction. For severe ptosis with a muscle strength assessment of <4mm, frontalis muscle-related surgery may be required for correction.

[0004] Silicone strip frontalis muscle suspension surgery is a type of ptosis correction surgery. Its principle is to artificially connect the frontalis muscle with the eyelid tissue, that is, to connect the frontalis muscle with the tarsal plate through a silicone strip, so that the force of the frontalis muscle contraction can directly lift the eyelid through the connection of the silicone strip.

[0005] Because the silicone strips remain suspended and cannot be adjusted after the corrective surgery, especially when the patient is resting, it can easily cause incomplete eyelid closure, affecting sleep. This can affect the patient's physical and mental health, and can also affect their compliance during the perioperative period, thus affecting the surgical outcome. Furthermore, incomplete eyelid closure can easily lead to complications such as exposure keratitis (corneal damage caused by continuous exposure to air). Summary of the Invention

[0006] The object of the present invention is to overcome the deficiencies in the prior art and to provide an implant for severe ptosis correction that can be adjusted in multiple modes.

[0007] The technical solution adopted by the present invention to solve the above problems is:

[0008] An implant for correction of severe ptosis, comprising:

[0009] Lifting thread, which is used to connect to the upper edge of the tarsal plate;

[0010] A wire puller, which is used to store the wire;

[0011] Among them, the wire puller is provided with an adjustment component for adjusting the length of the pulling wire outlet and a hard tube for guiding the pulling wire branching. The hard tube is Y-shaped, and the pulling wire is passed through the hard tube. The two outlets of the hard tube are sealed with a soft film tube for the pulling wire to pass through, and the outlet of the soft film tube is sealed with the pulling wire.

[0012] As a further improvement of the above technical solution, the pulling line is I-shaped, and the pulling line is one and its middle position is fixedly connected to the adjustment component, so that the two sections of the pulling line pass through the main pipe of the hard pipe and are respectively arranged on the two branches of the hard pipe.

[0013] As a further improvement of the above technical solution, there are two pulling lines and both are I-shaped. The inner ends of the pulling lines are fixedly connected to the adjustment component. The two pulling lines pass through the main pipe of the hard pipe and are respectively arranged on the two branches of the hard pipe.

[0014] As a further improvement of the above technical solution, the pulling wire is Y-shaped, the inner end of the pulling wire is fixedly connected to the adjustment component and the two ends of its outer end pass through the main pipe of the hard pipe and are respectively arranged on the two branches of the hard pipe.

[0015] As a further improvement of the above technical solution, the adjustment component includes a coil spring and a spring button. The center end of the coil spring is fixedly connected to the housing of the wire puller, the pulling wire is fixedly connected to the head end of the coil spring, and the spring button is slidably arranged on the housing. A limit assembly is provided on the housing, and the spring button realizes the reset limit of the coil spring through the limit assembly.

[0016] As a further improvement of the above technical solution, the limiting assembly includes a ratchet part, a limiting shaft and a limiting block. The ratchet part is rotatably arranged on the shell, the head end of the coil spring is fixedly connected to the ratchet part, the limiting shaft is rotatably connected to the spring button, the limiting block is fixedly connected to the limiting shaft, a spiral groove is provided on the limiting shaft, and a groove shaft part adapted to the spiral groove is provided on the shell. The tooth groove on the ratchet part can be located on the moving track of the limiting block so that the ratchet part and the limiting block are engaged.

[0017] As a further improvement of the above technical solution, the shell is formed by fixing an upper shell and a lower shell by snapping or gluing.

[0018] As a further improvement of the above technical solution, two groups of grooved shaft members are provided on the upper shell body and are adapted in the corresponding two groups of spiral grooves.

[0019] As a further improvement of the above technical solution, an adjusting button is rotatably provided on the upper shell, the center position of the adjusting button is fixedly connected to an adjusting shaft, a groove-pressing part is fixedly connected to the adjusting shaft, the center end of the coil spring is fixedly connected to the groove-pressing part, a limiting disk is provided on the extension of the adjusting shaft, a limiting tooth is provided on the limiting disk, and elastic teeth engaged with the limiting teeth are provided on the edge of the upper shell.

[0020] The present invention also provides a method for operating the implant for severe ptosis correction based on the above technical solution, including two operating modes:

[0021] MODE 1: The spring button is in the open state, the limit block is separated from the ratchet teeth of the ratchet member, the implant is in the lifting working mode, the coil spring is in the inward contraction state, so that the lifting wire is pulled upward;

[0022] MODE2: The spring button is in a pressed state, the limit block is in a ratchet meshing state with the ratchet wheel, and the coil spring is in an inwardly contracted limited state. In this working mode, the pulling line is pulled out in advance to release the pulling state.

[0023] Compared with the prior art, the present invention has the following advantages and effects:

[0024] (1) The present invention can adjust the elastic force of the pulling wire through the coordinated arrangement of the pulling wire and the adjusting component on the wire puller, so that the suspension force can be adaptively adjusted based on the eye movement, reducing the cutting force on the fixed position of the pulling wire caused by the hard pulling of the external force, thereby ensuring the stability of the pulling wire connection.

[0025] (2) The present invention adjusts the length of the lifting wire through the adjustment component, thereby realizing the switching of the implant between the lifting working state (i.e., the user is awake when using it) and the stretching resting state (i.e., the user is asleep when using it). While improving the flexibility of use, it can also reduce the risk of exposure keratitis caused by incomplete eyelid closure during sleep.

[0026] (3) The present invention ensures the stability of the pulling direction of the pulling wire on the subcutaneous soft tissue by combining the hard tube and the soft membrane tube on the wire puller, while also reducing the impact on the natural feeling of eye movement after implantation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a schematic structural diagram of an implant for correcting severe ptosis.

[0028] Figure 2 yes Figure 1 The structural diagram of the first wire pulling method is shown in FIG.

[0029] Figure 3 yes Figure 1 The structural diagram of the second wire pulling method is shown in .

[0030] Figure 4 yes Figure 1 The structural diagram of the third wire pulling method is shown in FIG.

[0031] Figure 5 This is a schematic diagram of the relevant steps of the silicone strip frontal muscle suspension procedure.

[0032] Figure 6 yes Figure 1The structural diagram of the wire puller is shown in .

[0033] Figure 7 yes Figure 6 The enlarged schematic diagram of the local structure of the wire puller is shown in FIG.

[0034] Figure 8 yes Figure 7 The structural diagram of the spring button in use state 1 is shown in FIG.

[0035] Figure 9 yes Figure 7 The structural diagram of the spring button in the second usage state is shown in FIG.

[0036] Figure 10 It is a structural diagram of the pressure groove arrangement of the present invention.

[0037] Figure 11 It is a structural diagram of the setting of the limit plate in the present invention.

[0038] Figure 12 This is a diagram showing the use of an implant for severe ptosis correction surgery using a silicone strip frontalis muscle suspension technique.

[0039] Figure numbers: pulling line 101, wire puller 102, upper shell 103, lower shell 104, coil spring 105, spring button 106, limit assembly 107, ratchet part 108, limit shaft 109, limit block 110, spiral groove 111, groove shaft part 112, oblique block lock tongue 113, first conical top block 114, second conical top block 115, spring part 116, hard tube 117, soft membrane tube 118, adjusting button 119, adjusting shaft 120, groove pressing part 121, limit disk 122, limit teeth 123, elastic teeth 124. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0041] See also Figures 1-12The present embodiment is an implant for correction of severe ptosis, comprising a lifting thread 101 for connecting to the upper edge of the tarsal plate and a thread puller 102 for receiving the lifting thread 101. The thread puller 102 is provided with an adjustment component for adjusting the length of the lifting thread 101 and a hard tube 117 for guiding the branching of the lifting thread 101, which serves to limit the sliding trajectory of the lifting thread 101. The hard tube 117 is Y-shaped, and the lifting thread 101 is passed through the hard tube 117. Both outlets of the hard tube 117 are sealed with a soft membrane tube 118 for the lifting thread 101 to pass through. The outlet of the soft membrane tube 118 is sealed with the lifting thread 101 to form a potential closed cavity, thereby reducing the risk of the lifting thread 101 sliding unsmoothly due to adhesion between the lifting thread 101 and the subcutaneous soft tissue.

[0042] When the user is awake, the adjusting component shortens the length of the lifting thread 101 and provides tension to the lifting thread 101, so that the lifting thread 101 pulls the tarsal plate to lift the upper eyelid. At this time, the soft membrane tube 118 is in a wrinkled state. When the user is asleep, the adjusting component increases the length of the lifting thread 101 and stops pulling the lifting thread 101. The lifting thread 101 stops pulling the tarsal plate. At this time, the soft membrane tube 118 is in a tension-free stretched state.

[0043] In this embodiment, the lifting wire 101 has the following three structural configurations:

[0044] (1) The pulling line 101 is I-shaped, and the pulling line 101 is a single piece and its middle position is fixedly connected to the adjustment component, so that the two sections of the pulling line 101 pass through the main pipe of the hard pipe 117 and are respectively arranged on the two branches of the hard pipe 117. Figure 2 As shown in;

[0045] (2) There are two pulling lines 101 and both are I-shaped. The inner ends of the pulling lines 101 are fixedly connected to the adjustment component. The two pulling lines 101 pass through the main pipe of the hard pipe 117 and are respectively installed on the two branches of the hard pipe 117. Figure 3 As shown in;

[0046] (3) The pulling wire 101 is Y-shaped, the inner end of the pulling wire 101 is fixedly connected to the adjustment component and the two ends of the outer end pass through the main pipe of the hard pipe 117 and are respectively provided on the two branches of the hard pipe 117. Figure 4 As shown in .

[0047] Based on the structural settings of the above three types of lifting threads 101, in addition to the Y-shape, the hard tube 117 can also adopt two I-shaped hard tubes 117. The two hard tubes 117 are both connected to the wire puller 102. The two parts of the lifting thread 101 used to connect to the upper edge of the tarsal plate can be respectively passed through the two hard tubes 117, which reduces the manufacturing difficulty of the hard tube 117 and also reduces the mutual influence between the two parts of the lifting thread 101 during use.

[0048] For ease of understanding, this embodiment describes the relevant steps of the silicone strip frontal muscle suspension technique (eg Figure 5 ), as follows:

[0049] Ⅰ: The eyelid skin and subcutaneous soft tissue are incised to expose the tarsal plate;

[0050] II: The silicone strip is fixed with sutures to the tarsal plate;

[0051] III: Above the eyebrows, the skin and subcutaneous soft tissue are incised, and the two ends of the silicone strip are guided along the deep layer of the subcutaneous soft tissue (deep layer of the orbicularis oculi muscle) to pass through two incisions respectively;

[0052] IV: Above the pupil, the skin and subcutaneous soft tissue are incised, and the two ends of the silicone strip are guided along the deep layer of the subcutaneous soft tissue (deep layer of the frontalis muscle) to pass through the incision;

[0053] V: Tighten the silicone strips, observe the eyelid height to ensure that the eyelid is at a satisfactory level, and then suture the junction of the silicone strips with nylon thread;

[0054] VI: Remove excess silicone strips and suture the incision layer by layer.

[0055] Among them, the implant in this embodiment is applied to the above-mentioned suspension surgery. In order to facilitate the implantation operation of the implant, the lifting wire 101 adopts a split structure (i.e., it is divided into two parts, one part is connected to the adjustment component, and the other part is implanted subcutaneously separately). That is, after completing step IV, the two parts of the lifting wire 101 are connected (for example, a sleeve is sleeved on the connecting end of the two parts of the lifting wire 101 in an interference fit manner, and then the two sleeves are connected by threading or clamping). The wire puller 102 can be fixed to the scalp through a head-mounted fixing bracket or directly by gluing, such as Figure 12 As shown in .

[0056] In addition to the above-mentioned method, the implant in this embodiment can also be fully implanted, that is, an incision is made in the hairline directly to the periosteum, and the periosteum is peeled downward until it merges with the double eyelid line incision to form a potential cavity under the galea aponeurotica-under the frontalis muscle-in front of the levator palpebrae superioris aponeurotica, and then the implant is placed in the formed cavity. After suturing the lifting thread 101 to the upper edge of the tarsal plate, the position of the wire puller 102 is adjusted. When it is observed that the position of the wire puller 102 is appropriate, the wire puller 102 is sutured and fixed to the periosteum, and then the incision is sutured layer by layer, and finally a pressure bandage is applied to complete the implantation of the implant.

[0057] See also Figure 6-Figure 9 The adjustment component includes a coil spring 105 and a spring button 106. The center end of the coil spring 105 is fixedly connected to the shell of the wire puller 102, and the pulling wire 101 is fixedly connected to the head end of the coil spring 105, thereby realizing the elastic adjustment of the pulling wire 101, so that the suspension force can be adaptively telescopically adjusted based on the eye movement. The spring button 106 is slidably set on the shell, and a limit assembly 107 is provided on the shell. The spring button 106 realizes the reset limit of the coil spring 105 through the limit assembly 107.

[0058] Among them, the limiting assembly 107 includes a ratchet part 108, a limiting shaft 109 and a limiting block 110. The ratchet part 108 is rotatably set on the shell, the head end of the coil spring 105 is fixedly connected to the ratchet part 108, the limiting shaft 109 is rotatably connected to the spring button 106, the limiting block 110 is fixedly connected to the limiting shaft 109, a spiral groove 111 is provided on the limiting shaft 109, and a groove shaft part 112 adapted to the spiral groove 111 is provided on the shell. The tooth groove on the ratchet part 108 can be located on the moving track of the limiting block 110, so that the ratchet part 108 and the limiting block 110 are engaged. By pressing the spring button 106, the spring button 106 drives the limit shaft 109 to move together, and during the movement, the limit shaft 109 rotates relative to the spring button 106 under the cooperation of the spiral groove 111 and the groove shaft part 112, so that the limit block 110 moves into the tooth groove on the ratchet part 108, thereby limiting the rotation of the ratchet part 108.

[0059] In this embodiment, the spring button 106 has the following structure:

[0060] The spring button 106 is provided with a connecting shaft, and the connecting shaft is provided with a first conical top block 114 and a second conical top block 115. The first conical top block 114 and the second conical top block 115 are stacked, and the first conical top block 114 is longitudinally slidably connected to the connecting shaft through a spring member 116. The second conical top block 115 is fixedly connected to the connecting shaft and a spring member 116 is provided between the second conical top block 115 and the shell. A bevel block lock tongue 113 is horizontally provided on the shell for connecting with the spring member 116 for extension and retraction.

[0061] In this structure, the spring button 106 is pressed, and the second conical top block 115 pushes the inclined block lock tongue 113 through the inclined surface of the inclined block lock tongue 113. After reaching the stroke, the inclined block lock tongue 113 and the second conical top block 115 are in contact with the plane to limit the position, and the spring button 106 is locked. At this time, the limit block 110 and the ratchet member 108 are in a meshing state, and the position of the coil spring 105 is limited and in a locked state. Figure 8 As shown in .

[0062] Press the spring button 106 again, the inclined block lock tongue 113 is disengaged from the second truncated cone top block 115, and the first truncated cone top block 114 contacts the inclined block lock tongue 113 and pushes it open (as shown in FIG. Figure 9 As shown in the figure), the pressing is then stopped, and the spring button 106 retracts under the action of the spring member 116. At this time, due to the pre-tightening effect of the inclined block lock tongue 113, the position of the first conical top block 114 remains unchanged during the recovery process of the spring button 106, so that the second conical top block 115 fits the plane end surface of the first conical top block 114. Subsequently, as the spring button 106 continues to rise, the second conical top block 115 is freed from the restriction of the inclined block lock tongue 113, and the spring button 106 is unlocked. At this time, the limit block 110 deviates from the ratchet teeth of the ratchet member 108, and the limit block 110 and the ratchet member 108 are disengaged, and the winding spring 105 resumes the rewinding and pulling work.

[0063] Based on this, the implant has two optional modes:

[0064] MODE 1: the spring button 106 is in the open state, the limit block 110 is separated from the ratchet teeth of the ratchet member 108, the implant is in the lifting working mode, the coil spring 105 is in the inward contraction state, so that the lifting wire 101 is pulled upward;

[0065] MODE2: The spring button 106 is in a pressed state, the limit block 110 is in a ratchet meshing state with the ratchet member 108, and the coil spring 105 is in an inwardly contracted limited state. In this working mode, the pulling line 101 is pulled out in advance to release the pulling state.

[0066] In this embodiment, the shell is formed by fixing the upper shell 103 and the lower shell 104 by snapping or gluing, which reduces the manufacturing difficulty of the shell and facilitates the assembly of the various components in the shell. The upper shell 103 is provided with two groups of grooved shafts 112 set at 90° and adapted to the corresponding two groups of spiral grooves 111, ensuring the stability of the rotation of the limit shaft 109.

[0067] See also Figure 10 、 Figure 11An adjusting button 119 is rotatably provided on the upper shell 103, and an adjusting shaft 120 is fixedly connected to the center position of the adjusting button 119. A groove part 121 is fixedly connected to the adjusting shaft 120, and the center end of the coil spring 105 is fixedly connected to the groove part 121. A limit disk 122 is provided on the extension of the adjusting shaft 120, and a limit tooth 123 is provided on the limit disk 122. Elastic teeth 124 engaged with the limit teeth 123 are provided on the edge of the upper shell 103.

[0068] When the torque of the adjustment button 119 is greater than the limit of the elastic teeth 124, the elastic teeth 124 deviate, causing the adjustment button 119 to rotate into the limit of the next group of elastic teeth 124, thereby achieving the effect of adjusting the preload force of the coil spring 105 by rotating the adjustment button 119, so that adaptive adjustment can be made according to the patient's actual surgical adjustment needs and the recovery status during the perioperative period to meet different periodic adjustment needs.

[0069] The above contents described in this specification are merely examples of the present invention. Those skilled in the art may make various modifications, additions, or substitutions to the described embodiments, without departing from the contents of this specification or exceeding the scope defined by the claims, and such modifications, additions, or substitutions may be made to the described embodiments. Such modifications, additions, or substitutions may be made by persons skilled in the art. Such modifications, additions, or substitutions may be made to the described embodiments without departing from the contents of this specification or exceeding the scope defined by the claims, and such modifications shall fall within the scope of protection of the present invention.

Claims

1. An implant for correction of severe ptosis, characterized in that: include: Lifting thread, which is used to connect to the upper edge of the tarsal plate; A wire puller, which is used to store the wire; Among them, the wire puller is provided with an adjustment component for adjusting the length of the pulling wire outlet and a hard tube for guiding the pulling wire branching. The hard tube is Y-shaped, and the pulling wire is passed through the hard tube. The two outlets of the hard tube are sealed with a soft film tube for the pulling wire to pass through, and the outlet of the soft film tube is sealed with the pulling wire.

2. The implant for correction of severe ptosis according to claim 1, characterized in that: The pulling line is I-shaped, and the pulling line is one and its middle position is fixedly connected to the adjustment component, so that the two sections of the pulling line pass through the main pipe of the hard pipe and are respectively arranged on the two branches of the hard pipe.

3. The implant for correction of severe ptosis according to claim 1, characterized in that: There are two pulling lines and both are I-shaped. The inner ends of the pulling lines are fixedly connected to the adjustment component. The two pulling lines pass through the main pipe of the hard pipe and are respectively arranged on the two branches of the hard pipe.

4. The implant for correction of severe ptosis according to claim 1, characterized in that: The pulling line is Y-shaped, the inner end of the pulling line is fixedly connected to the adjustment component and the two ends of the outer end pass through the main pipe of the hard pipe and are respectively arranged on the two branches of the hard pipe.

5. The implant for correction of severe ptosis according to any one of claims 2 to 4, characterized in that: The adjustment component includes a coil spring and a spring button. The center end of the coil spring is fixedly connected to the housing of the wire puller, and the pulling wire is fixedly connected to the head end of the coil spring. The spring button is slidably set on the housing. A limit assembly is provided on the housing. The spring button realizes the reset limit of the coil spring through the limit assembly.

6. The implant for correction of severe ptosis according to claim 5, characterized in that: The limiting assembly includes a ratchet part, a limiting shaft and a limiting block. The ratchet part is rotatably arranged on the shell, the head end of the coil spring is fixedly connected to the ratchet part, the limiting shaft is rotatably connected to the spring button, the limiting block is fixedly connected to the limiting shaft, a spiral groove is provided on the limiting shaft, and a groove shaft part adapted to the spiral groove is provided on the shell. The tooth groove on the ratchet part can be located on the moving track of the limiting block so that the ratchet part and the limiting block are engaged.

7. The implant for correction of severe ptosis according to claim 6, characterized in that: The shell is formed by fixing an upper shell and a lower shell by snapping or gluing.

8. The implant for correction of severe ptosis according to claim 7, characterized in that: The upper shell is provided with two groups of grooved shaft members which are adapted in the corresponding two groups of spiral grooves.

9. The implant for correction of severe ptosis according to claim 7, characterized in that: An adjusting button is rotatably provided on the upper shell body, an adjusting shaft is fixedly connected to the center position of the adjusting button, a groove-pressing part is fixedly connected to the adjusting shaft, the center end of the coil spring is fixedly connected to the groove-pressing part, a limit disk is provided on the extension of the adjusting shaft, a limit tooth is provided on the limit disk, and elastic teeth engaged with the limit teeth are provided on the edge of the upper shell body.

10. A method for operating the implant for severe ptosis correction according to any one of claims 6 to 9, characterized in that: There are two working modes: MODE 1: The spring button is in the open state, the limit block is separated from the ratchet teeth of the ratchet member, the implant is in the lifting working mode, the coil spring is in the inward contraction state, so that the lifting wire is pulled upward; MODE2: The spring button is in a pressed state, the limit block is in a ratchet meshing state with the ratchet wheel, and the coil spring is in an inwardly contracted limited state. In this working mode, the pulling line is pulled out in advance to release the pulling state.

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