Lacrimal passage expansion drainage device

Abstract

The lacrimal passage expansion drainage device comprises an expansion body and a drainage strip, the expansion body is of a conical structure, the interior of the expansion body is hollow, the lower portion of the expansion body is provided with an opening, the expansion body is provided with a plurality of drainage holes communicated with the interior and the exterior, and after the expansion body is placed into the corresponding nasal cavity, the drainage strip is arranged on the expansion body. The first end of the drainage strip is inserted into the dilation body from one drainage hole, and the second end of the drainage strip sequentially penetrates through the lower lacrimal ductule, the upper lacrimal ductule and the other drainage hole and then enters the dilation body to be fastened to the first end of the dilation body in a crossed mode. The dacryocystitis postoperative anastomotic stoma can be kept pressed on the mucous membrane through the expansion body, the expansion body is fixed to the postoperative anastomotic stoma through the drainage strip, and the anastomotic stoma is kept attached to the mucous membrane through the expansion body. The lacrimal passage expansion drainage device has the effects that the lacrimal sac is opened, and the anastomotic stoma is kept to be attached to the mucous membrane.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a lacrimal duct expansion and drainage device. Background Art

[0002] Lacrimal duct obstruction is a common ophthalmic condition, and dacryocystorhinostomy is currently a commonly used treatment. Currently, the key to both classic skin-based and endoscopic dacryocystorhinostomy is maintaining patency of the dacryocystorhinostomy. Mainstream methods include direct suture, conventional lacrimal drainage tubes, absorbent cotton packing, and subcutaneous sutures with rubber bands. Conventional packing cannot provide sustained pressure on the anastomotic stoma, and conventional drainage tubes cannot exert pressure on the anastomotic mucosa. Subcutaneous sutures with rubber bands can provide sustained pressure, but this method is only suitable for external surgical approaches. The sutures, tied in the skin, require removal within a week and leave scars, making them suitable only for percutaneous dacryocystorhinostomy. In summary, there is currently no lacrimal drainage tube that can consistently and conveniently maintain patency of the anastomotic stoma. Utility Model Content

[0003] In view of the above problems, a tear duct dilation and drainage device is now provided to solve the problems existing in the prior art.

[0004] The specific technical solutions are as follows:

[0005] A lacrimal duct expansion and drainage device comprises an expansion body and a drainage strip. The expansion body is a conical structure, and the interior of the expansion body is hollow. The lower part of the expansion body is open, and a plurality of drainage holes connecting the inside and the outside are opened on the expansion body. After the expansion body is placed in the corresponding nasal cavity, the first end of the drainage strip is inserted into the expansion body through one of the drainage holes. The second end of the drainage strip passes through the lower lacrimal canaliculus, the upper lacrimal canaliculus and the other drainage hole in sequence, and then enters the expansion body and is cross-tied with the first end. The expansion body can be used to keep the anastomosis after dacryocystitis surgery under pressure on the mucosa.

[0006] The above-mentioned lacrimal duct expansion and drainage device also has the following characteristics: the tip of the expansion body is provided with two symmetrically distributed fixing holes, and both fixing holes are provided with fixing devices, which can cooperate with the drainage strip to keep the expansion body at the anastomosis.

[0007] The beneficial effect of the above solution is that the expansion body can be fixed at the anastomosis by the cooperation between the drainage strip and the fixing device, so as to expand the lacrimal sac and keep it in contact with the mucosa.

[0008] The above-mentioned tear duct expansion and drainage device also has the following characteristics: the fixing device includes a fixing body, a left clamping body, a right clamping body and two elastic members, the fixing body is arranged at the corresponding fixing hole, and a channel connected to the fixing hole is opened on the fixing body, the left clamping body and the right clamping body are both arranged in the channel, the upper ends of the left clamping body and the right clamping body are hinged to the left and right side walls of the channel respectively, one end of one of the elastic members is connected to the side of the left clamping body, and the other end is connected to the left side wall of the channel, one end of the other elastic member is connected to the side of the right clamping body, and the other end is connected to the right side wall of the drainage hole, when the elastic members are in a natural state, the lower end of the left clamping body and the lower end of the right clamping body fit together, so that the channel is closed, and when the drainage strip passes through the channel from top to bottom, the two clamping bodies will be separated from each other.

[0009] The beneficial effect of the above scheme is: when the drain bar is pulled downward so that it continues to pass through the channel, the lower ends of the two clamping bodies are pushed away from each other. When the drain bar is pulled in the opposite direction, the drain bar will make the two clamping bodies approach each other, and the clamping force begins to increase until the drain bar cannot be pulled at all, thereby preventing the drain bar from being pulled in the opposite direction.

[0010] The above-mentioned lacrimal duct expansion and drainage device also has the following feature: the expansion body is made of silicone material.

[0011] The beneficial effect of the above solution is that the surface of the expansion body is also set to be smooth, so as to prevent the expansion body from damaging the human mucosa.

[0012] In summary, the beneficial effects of this solution are:

[0013] The lacrimal duct dilation and drainage device provided by the utility model has the effect of opening the lacrimal sac and keeping the anastomosis in contact with the mucosa by fixing the dilation body to the anastomosis after surgery through the drainage strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural diagram of the lacrimal duct dilation and drainage device of the present invention;

[0015] Figure 2 This is a schematic front cross-sectional view of the lacrimal duct dilation and drainage device of the present invention;

[0016] Figure 3 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the figure: 1. expansion body; 2. drainage hole; 3. drainage strip; 4. fixing body; 5. left clamping body; 6. right clamping body; 7. elastic member. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0020] The present invention will be further described below with reference to specific embodiments, but this is not intended to limit the present invention.

[0021] Figure 1 This is a front view structural diagram of the lacrimal duct expansion and drainage device of the present invention. Figure 2 This is a schematic diagram of the front cross-section structure of the lacrimal duct expansion and drainage device of the present invention. Figure 3 For this utility model Figure 2 The enlarged structural diagram at A is as follows: Figure 1-Figure 3 As shown, the lacrimal duct expansion and drainage device provided in this embodiment includes an expansion body 1 and a drainage strip 3. The expansion body 1 is a conical structure, and the interior of the expansion body 1 is hollow. The lower part of the expansion body 1 is open, and a plurality of drainage holes 2 connecting the inside and the outside are opened on the expansion body 1. After the expansion body 1 is placed in the corresponding nasal cavity, the first end of the drainage strip 3 is inserted into the expansion body 1 from one of the drainage holes 2. The second end of the drainage strip 3 passes through the lower lacrimal canaliculus, the upper lacrimal canaliculus and the other drainage hole 2 in sequence, and then enters the expansion body 1 and is cross-tied with the first end. The expansion body 1 can be used to keep the anastomosis after dacryocystitis surgery under pressure on the mucosa.

[0022] It should be noted that the umbrella-shaped part of the expansion body 1 has a diameter of 15mm and a height of 2mm. It is a silicone conical umbrella structure with 8 capillaries distributed around it to drain tears and secretions. There are two tunnels through the vertebral body at a distance of 2mm from the center. The diameter is about 0.6mm. The drainage strip 3 is about 30mm long and a solid structure with a blue mark at the center. It has a diameter of about 0.6mm and starts at 9mm from the midpoint. There are circular protrusions at intervals of 2mm with a diameter of 1.6mm. There are 4 of them. The tail of the drainage strip 3 is 5mm, the wrapped diameter is 0.5mm, and the round-headed soft steel wire is about 10mm long.

[0023] In the above embodiment, the tip of the expansion body 1 is provided with two symmetrically distributed fixing holes, and both fixing holes are provided with fixing devices, which can cooperate with the drainage strip 3 to keep the expansion body 1 at the anastomotic opening.

[0024] In the above embodiment, the fixing device includes a fixing body 4, a left clamping body 5, a right clamping body 6 and two elastic members 7. The fixing body 4 is arranged at the corresponding fixing hole, and a channel connected to the fixing hole is opened on the fixing body 4. The left clamping body 5 and the right clamping body 6 are both arranged in the channel. The upper ends of the left clamping body 5 and the right clamping body 6 are hinged to the left and right side walls of the channel respectively. One end of one elastic member 7 is connected to the side of the left clamping body 5, and the other end is connected to the left side wall of the channel. One end of the other elastic member 7 is connected to the side of the right clamping body 6, and the other end is connected to the right side wall of the drainage hole 2. When the elastic members 7 are in a natural state, the lower end of the left clamping body 5 and the lower end of the right clamping body 6 fit together, so that the channel is closed. When the drainage strip 3 passes through the channel from top to bottom, the two clamping bodies will be separated from each other.

[0025] In the above embodiment, the expansion body 1 is made of silicone.

[0026] Working principle: After the lacrimal sac and nasal cavity mucosa are anastomosed during the operation, the drainage strips 3 are first led out of the nasal cavity from the upper and lower lacrimal puncta, from the upper and lower lacrimal canaliculi to the lacrimal sac anastomosis of the common lacrimal duct, and the expansion body 1 is inserted into the drainage hole 2 at the umbrella-shaped tip, with the umbrella-shaped tip facing the anastomosis, and the umbrella-shaped part is gradually pushed to the anastomosis. Because the drainage strip 3 at the anastomosis has a circular bulge, with the help of the drainage strip 3 pulling the lacrimal canaliculus, the umbrella-shaped tip is aligned with the common lacrimal duct, and the edge of the expansion body 1 can flatten the lacrimal sac and nasal cavity anastomosis to facilitate hemostasis and healing.

[0027] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of the present invention specification should be included in the protection scope of the present invention.

Claims

1. A lacrimal duct dilation and drainage device, characterized by: The invention comprises an expansion body (1) and a drainage strip (3), wherein the expansion body (1) is a conical structure, and the interior of the expansion body (1) is hollow, the lower part of the expansion body (1) is open, and a plurality of drainage holes (2) communicating with the inside and outside are provided on the expansion body (1). After the expansion body (1) is placed in the corresponding nasal cavity, the first end of the drainage strip (3) is inserted into the expansion body (1) from one of the drainage holes (2), and the second end of the drainage strip (3) passes through the lower lacrimal canaliculus, the upper lacrimal canaliculus and the other drainage hole (2) in sequence, and then enters the expansion body (1) and is cross-tied with the first end. Thus, the expansion body (1) can be used to keep the anastomosis after dacryocystitis surgery under pressure on the mucosa.

2. The lacrimal duct dilation and drainage device according to claim 1, characterized in that: The tip of the expansion body (1) is provided with two symmetrically distributed fixing holes, and both fixing holes are provided with fixing devices, which can cooperate with the drainage strip (3) to keep the expansion body (1) at the anastomotic opening.

3. The lacrimal duct dilation and drainage device according to claim 2, characterized in that: The fixing device comprises a fixing body (4), a left clamping body (5), a right clamping body (6) and two elastic members (7). The fixing body (4) is arranged at the corresponding fixing hole, and a channel communicating with the fixing hole is provided on the fixing body (4). The left clamping body (5) and the right clamping body (6) are both arranged in the channel. The upper ends of the left clamping body (5) and the right clamping body (6) are respectively hinged to the left and right side walls of the channel. One end of one of the elastic members (7) is hinged to the left and right side walls of the channel. The left clamping body (5) is connected to the side surface, and the other end is connected to the left side wall of the channel. One end of the other elastic member (7) is connected to the side surface of the right clamping body (6), and the other end is connected to the right side wall of the drainage hole (2). When the elastic members (7) are in a natural state, the lower end of the left clamping body (5) and the lower end of the right clamping body (6) fit together, so that the channel is closed. When the drainage strip (3) passes through the channel from top to bottom, the two clamping bodies are separated from each other.

4. The lacrimal duct dilation and drainage device according to claim 3, characterized in that: The expansion body (1) is made of silicone material.

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