An artificial tear duct and tear duct shaping method to prevent prolapse

Abstract

The present invention relates to an artificial tear duct and tear duct shaping method for preventing prolapse. The artificial tear duct comprises an upper tear duct segment, a lower tear duct segment and a nasolacrimal duct segment; the upper tear duct segment, the lower tear duct segment and the nasolacrimal duct segment are connected with one end of the nasolacrimal duct segment to form a Y-shaped structure as a whole; the upper tear duct segment comprises an upper tear duct body, an upper tear duct buckle, an upper tear duct slot and an upper tear duct guide line; one end of the upper tear duct body is connected with the nasolacrimal duct segment, the other end is provided with an upper tear duct buckle and an upper tear duct slot in sequence, and the upper tear duct guide line is connected with the end of the upper tear duct slot; the lower tear duct segment comprises a lower tear duct body, a lower tear duct buckle, a lower tear duct slot and a lower tear duct guide line; one end of the lower tear duct body is connected with the nasolacrimal duct segment, the other end is provided with the lower tear duct buckle and the lower tear duct slot in sequence, and the lower tear duct guide line is connected with the end of the lower tear duct slot. The invention can prevent the artificial tear duct from falling out.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an anti-prolapse artificial tear duct and a tear duct shaping method. Background Art

[0002] Currently, there are various types of artificial tear ducts, including A-type tubes, RS tubes, and RT tubes. However, after implantation into the patient's tear duct, the artificial tear duct is easily pulled when the patient rubs his eyes. Since the diameter of conventional artificial tear ducts is relatively thin and the lower end is relatively smooth, when the artificial tear duct at the corner of the eye is pulled, no resistance can be generated, and the artificial tear duct is easily dislocated. The artificial tear duct partially dislocates through the upper and lower lacrimal canaliculi. If the lower end of the artificial tear duct is pulled into the lacrimal sac or nasolacrimal duct, the partially dislocated artificial tear duct is easy to reposition, but if the artificial tear duct is dislocated into the lacrimal sac or the upper end of the nasolacrimal duct, it is difficult to reposition, and may even require surgical incision and repositioning. Summary of the invention

[0003] The purpose of the present invention is to provide an artificial tear duct and tear duct shaping method to prevent the artificial tear duct from falling out, which adopts a Y-shaped structure to increase the resistance of the artificial tear duct after entering the tear sac, avoid the artificial tear duct from being completely pulled into the tear sac, and thus prevent the possibility of the artificial tear duct from falling out.

[0004] The present invention provides an anti-prolapse artificial tear duct, comprising an upper tear duct segment, a lower tear duct segment, and a nasolacrimal duct segment; the upper tear duct segment, the lower tear duct segment, and the nasolacrimal duct segment are connected to one end of the nasolacrimal duct segment to form a Y-shaped structure as a whole;

[0005] The upper lacrimal canaliculus segment includes an upper lacrimal canaliculus tube body, an upper lacrimal canaliculus buckle, an upper lacrimal canaliculus slot, and an upper lacrimal canaliculus guide line; one end of the upper lacrimal canaliculus tube body is connected to the nasolacrimal duct segment, and the other end is provided with the upper lacrimal canaliculus buckle and the upper lacrimal canaliculus slot in sequence, and the upper lacrimal canaliculus guide line is connected to the end of the upper lacrimal canaliculus slot;

[0006] The lower lacrimal canaliculus segment comprises a lower lacrimal canaliculus tube body, a lower lacrimal canaliculus buckle, a lower lacrimal canaliculus slot, and a lower lacrimal canaliculus guide wire; one end of the lower lacrimal canaliculus tube body is connected to the nasolacrimal duct segment, and the other end is provided with the lower lacrimal canaliculus buckle and the lower lacrimal canaliculus slot in sequence, and the lower lacrimal canaliculus guide wire is connected to the end of the lower lacrimal canaliculus slot;

[0007] The length of the lower lacrimal duct body is slightly greater than the length of the upper lacrimal duct body;

[0008] The upper lacrimal canaliculus buckle and the upper lacrimal canaliculus slot are used to cooperate with the lower lacrimal canaliculus slot and the lower lacrimal canaliculus buckle, so that the upper lacrimal canaliculus tube body is connected with the lower lacrimal canaliculus tube body into one body.

[0009] Furthermore, the diameter of the nasolacrimal duct segment is greater than the diameters of the upper lacrimal duct body and the lower lacrimal duct body.

[0010] Furthermore, the cross-section of the nasolacrimal duct segment is petal-shaped.

[0011] The present invention also provides a method for shaping the tear duct using the anti-prolapse artificial tear duct, comprising:

[0012] Step 1, insert the upper lacrimal canaliculus traction line and the lower lacrimal canaliculus traction line into the upper lacrimal canaliculus and the lower lacrimal canaliculus respectively, and lead the upper end to the inner canthus;

[0013] Step 2, tying the lower end of the upper lacrimal canaliculus traction line to the upper lacrimal canaliculus guide line, and tying the lower end of the lower lacrimal canaliculus traction line to the lower lacrimal canaliculus guide line;

[0014] Step 3, by pulling the upper lacrimal canaliculus traction line and the lower lacrimal canaliculus traction line, the upper lacrimal canaliculus segment and the lower lacrimal canaliculus segment are respectively inserted into the upper lacrimal canaliculus and the lower lacrimal canaliculus, and the upper lacrimal canaliculus buckle, the upper lacrimal canaliculus slot, the lower lacrimal canaliculus buckle and the lower lacrimal canaliculus slot are brought together at the inner canthus;

[0015] Step 4, connect the upper lacrimal canaliculus buckle and the upper lacrimal canaliculus slot with the lower lacrimal canaliculus slot and the lower lacrimal canaliculus buckle to form a joint, and cut off the upper lacrimal canaliculus guide line and the lower lacrimal canaliculus guide line;

[0016] Step 5, pull down the nasolacrimal duct section outside the nasolacrimal duct and pull the joint into the upper lacrimal canaliculus;

[0017] Step 6: Cut off the excess artificial tear duct in the nasal cavity and complete the artificial tear duct implantation surgery.

[0018] Through the above-mentioned scheme, through the method of preventing the artificial tear duct from falling out and shaping the tear duct, the artificial tear duct adopts a Y-shaped design. Once the risk of the artificial tear duct being pulled from the inner canthus occurs, the artificial tear duct will not completely enter the lacrimal sac, and it is easier to reposition, thereby reducing the risk of difficulty in repositioning the patient's artificial tear duct after prolapse, and is convenient for patients and doctors.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of an anti-prolapse artificial tear duct structure of the present invention;

[0021] Figure 2 yes Figure 1 The enlarged view of point Ⅰ in the middle;

[0022] Figure 3 is a schematic cross-sectional view of the nasolacrimal duct segment of the present invention;

[0023] Figure 4It is a schematic diagram of the clamping connection between the upper lacrimal canaliculus buckle, the upper lacrimal canaliculus clamping groove, the lower lacrimal canaliculus clamping groove, and the lower lacrimal canaliculus buckle of the present invention;

[0024] Figure 5 is a schematic diagram of step 1 in the tear duct shaping method of the present invention;

[0025] Figure 6 is a schematic diagram of step 2 in the lacrimal duct shaping method of the present invention;

[0026] Figure 7 is a schematic diagram of step 3 in the lacrimal duct shaping method of the present invention;

[0027] Figure 8 is a schematic diagram of step 4 in the lacrimal duct shaping method of the present invention;

[0028] Fig. 9 is a schematic diagram of step 5 in the tear duct shaping method of the present invention;

[0029] Fig.10 is a schematic diagram of step 6 in the lacrimal duct shaping method of the present invention;

[0030] Fig.11 It is a schematic diagram of the blocking process when the artificial tear duct is prolapsed in one embodiment of the present invention.

[0031] Numbers in the figure:

[0032] 1-upper lacrimal canaliculus segment; 11-upper lacrimal canaliculus body; 12-upper lacrimal canaliculus buckle; 13-upper lacrimal canaliculus slot; 14-upper lacrimal canaliculus guide wire;

[0033] 2-lower lacrimal canaliculus segment; 21-lower lacrimal canaliculus body; 22-lower lacrimal canaliculus buckle; 23-lower lacrimal canaliculus slot; 24-lower lacrimal canaliculus guide wire;

[0034] 3-Nasolacrimal duct segment. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] Ginseng Figures 1 to 4As shown, the present embodiment provides an anti-dislocation artificial tear duct, including an upper tear canaliculus segment 1, a lower tear canaliculus segment 2, and a nasolacrimal duct segment 3; the upper tear canaliculus segment 1 and the lower tear canaliculus segment 2, the nasolacrimal duct segment 3 are connected with one end of the nasolacrimal duct segment 3 to form a Y-shaped structure as a whole; the upper tear canaliculus segment 1 includes an upper tear canaliculus tube body 11, an upper tear canaliculus buckle 12, an upper tear canaliculus clamping groove 13, and an upper tear canaliculus guide line 14; one end of the upper tear canaliculus tube body 11 is connected with the nasolacrimal duct segment 3, and the other end is provided with an upper tear canaliculus buckle 12 and an upper tear canaliculus clamping groove 13 in sequence, and the upper tear canaliculus guide line 14 is connected with the end of the upper tear canaliculus clamping groove 13; The canalicular segment includes a lower lacrimal canalicular body 21, a lower lacrimal canalicular buckle 22, a lower lacrimal canalicular groove 23, and a lower lacrimal canalicular guide line 24; one end of the lower lacrimal canalicular body 21 is connected to the nasolacrimal duct segment 3, and the other end is provided with a lower lacrimal canalicular buckle 22 and a lower lacrimal canalicular groove 23 in sequence, and the lower lacrimal canalicular guide line 24 is connected to the end of the lower lacrimal canalicular groove 23; the length of the lower lacrimal canalicular body 21 is slightly greater than that of the upper lacrimal canalicular body 11; the upper lacrimal canalicular buckle 12 and the upper lacrimal canalicular groove 13 are used to cooperate with the lower lacrimal canalicular groove 23 and the lower lacrimal canalicular buckle 22, so that the upper lacrimal canalicular body 11 and the lower lacrimal canalicular body 21 are connected as one.

[0037] In this embodiment, the diameter of the nasolacrimal duct segment 3 is larger than the diameters of the upper lacrimal duct body 11 and the lower lacrimal duct body 21 , which is more conducive to the plasticity of the nasolacrimal duct and the upper and lower lacrimal ducts.

[0038] In this embodiment, the cross section of the nasolacrimal duct segment 3 is petal-shaped, which is conducive to the drainage of tears. Figure 3 shown.

[0039] The tear duct shaping method using the anti-prolapse artificial tear duct includes:

[0040] Step 1: Insert the upper lacrimal canaliculus traction wire and the lower lacrimal canaliculus traction wire into the upper lacrimal canaliculus and the lower lacrimal canaliculus respectively, and lead the upper end to the inner canthus. Figure 5 shown.

[0041] Step 2: Tie the lower end of the upper lacrimal canaliculus traction line to the upper lacrimal canaliculus guide line, and tie the lower end of the lower lacrimal canaliculus traction line to the lower lacrimal canaliculus guide line. Figure 6 shown.

[0042] Step 3: Pull the upper lacrimal canaliculus traction line and the lower lacrimal canaliculus traction line to insert the upper lacrimal canaliculus segment and the lower lacrimal canaliculus segment into the upper lacrimal canaliculus and the lower lacrimal canaliculus segment respectively, and make the upper lacrimal canaliculus buckle, the upper lacrimal canaliculus slot, the lower lacrimal canaliculus buckle and the lower lacrimal canaliculus slot converge at the inner canthus. Figure 7 shown.

[0043] Step 4: Connect the upper lacrimal canalicular buckle and the upper lacrimal canalicular slot with the lower lacrimal canalicular slot and the lower lacrimal canalicular buckle to form a joint, and cut off the upper lacrimal canalicular guide wire and the lower lacrimal canalicular guide wire. Figure 8shown.

[0044] Step 5, pull down the section of the nasolacrimal duct outside the nasolacrimal duct, pull the joint into the upper lacrimal canaliculus, and complete the repositioning of the artificial tear duct. During repositioning, directly pull the artificial tear duct at the lower end of the nasolacrimal duct under the nasal endoscope, and the artificial tear duct can be easily repositioned without causing difficulty in repositioning the artificial tear duct. The artificial tear duct exiting the nasolacrimal duct should be retained for at least 20 mm. Once the artificial tear duct at the inner canthus is pulled, part of the artificial tear duct at the nasolacrimal duct is allowed to enter the lacrimal sac. The Y-shaped structure is stuck at the common lacrimal duct, which can prevent the artificial tear duct from continuing to ascend without causing the artificial tear duct at the lower end of the nasolacrimal duct to completely enter the nasolacrimal duct. Fig. 9 shown.

[0045] Step 6: Cut off the excess artificial tear duct in the nasal cavity to complete the artificial tear duct implantation surgery. Fig.10 shown.

[0046] Ginseng Fig.11 As shown, the present invention adopts a Y-shaped structure, so that the artificial tear duct enters the upper and lower lacrimal canaliculi and then merges in the lacrimal sac area to enter the nasolacrimal duct. When the patient pulls the artificial tear duct from the inner canthus, the resistance generated by the structure of the common lacrimal duct and the Y-shaped structure of the artificial tear duct is used to prevent the artificial tear duct from continuing to ascend and prevent the artificial tear duct from continuing to fall out. This can prevent the artificial tear duct from being completely pulled into the lacrimal sac and effectively prevent the artificial tear duct from falling out from the inner canthus.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An anti-prolapse artificial tear duct, characterized in that: It comprises an upper lacrimal canaliculus segment (1), a lower lacrimal canaliculus segment (2), and a nasolacrimal duct segment (3); the upper lacrimal canaliculus segment (1), the lower lacrimal canaliculus segment (2), and the nasolacrimal duct segment (3) are connected to one end of the nasolacrimal duct segment (3), forming a Y-shaped structure as a whole; The upper lacrimal canaliculus segment (1) comprises an upper lacrimal canaliculus tube body (11), an upper lacrimal canaliculus buckle (12), an upper lacrimal canaliculus slot (13), and an upper lacrimal canaliculus guide wire (14); one end of the upper lacrimal canaliculus tube body (11) is connected to the nasolacrimal duct segment (3), and the other end is provided with the upper lacrimal canaliculus buckle (12) and the upper lacrimal canaliculus slot (13) in sequence; the upper lacrimal canaliculus guide wire (14) is connected to the end of the upper lacrimal canaliculus slot (13); The lower lacrimal canaliculus segment comprises a lower lacrimal canaliculus tube body (21), a lower lacrimal canaliculus buckle (22), a lower lacrimal canaliculus slot (23), and a lower lacrimal canaliculus guide wire (24); one end of the lower lacrimal canaliculus tube body (21) is connected to the nasolacrimal duct segment (3), and the other end is provided with the lower lacrimal canaliculus buckle (22) and the lower lacrimal canaliculus slot (23) in sequence; the lower lacrimal canaliculus guide wire (24) is connected to the end of the lower lacrimal canaliculus slot (23); The length of the lower lacrimal duct body (21) is slightly greater than the length of the upper lacrimal duct body (11); The upper lacrimal canaliculus buckle (12) and the upper lacrimal canaliculus slot (13) are used to cooperate with the lower lacrimal canaliculus slot (23) and the lower lacrimal canaliculus buckle (22) so that the upper lacrimal canaliculus body (11) and the lower lacrimal canaliculus body (21) are connected as one.

2. The anti-prolapse artificial tear duct according to claim 1, characterized in that: The diameter of the nasolacrimal duct segment (3) is greater than the diameters of the upper lacrimal duct body (11) and the lower lacrimal duct body (21).

3. The anti-prolapse artificial tear duct according to claim 2, characterized in that: The cross section of the nasolacrimal duct segment (3) is petal-shaped.

4. A method for shaping the tear duct using the artificial tear duct according to any one of claims 1 to 3, characterized in that: include: Step 1, insert the upper lacrimal canaliculus traction line and the lower lacrimal canaliculus traction line into the upper lacrimal canaliculus and the lower lacrimal canaliculus respectively, and lead the upper end to the inner canthus; Step 2, tying the lower end of the upper lacrimal canaliculus traction line to the upper lacrimal canaliculus guide line, and tying the lower end of the lower lacrimal canaliculus traction line to the lower lacrimal canaliculus guide line; Step 3, by pulling the upper lacrimal canaliculus traction line and the lower lacrimal canaliculus traction line, the upper lacrimal canaliculus segment and the lower lacrimal canaliculus segment are respectively inserted into the upper lacrimal canaliculus and the lower lacrimal canaliculus, and the upper lacrimal canaliculus buckle, the upper lacrimal canaliculus slot, the lower lacrimal canaliculus buckle and the lower lacrimal canaliculus slot are brought together at the inner canthus; Step 4, connect the upper lacrimal canaliculus buckle and the upper lacrimal canaliculus slot with the lower lacrimal canaliculus slot and the lower lacrimal canaliculus buckle to form a joint, and cut off the upper lacrimal canaliculus guide line and the lower lacrimal canaliculus guide line; Step 5, pull down the nasolacrimal duct section outside the nasolacrimal duct and pull the joint into the upper lacrimal canaliculus; Step 6: Cut off the excess artificial tear duct in the nasal cavity and complete the artificial tear duct implantation surgery.

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