A sinus stent and a method for making the same

Abstract

The present invention relates to the technical field of sinus stents, and discloses a sinus stent and a manufacturing method thereof, comprising stent ring seats symmetrically distributed up and down and a mesh stent connected between the upper and lower groups of stent ring seats, wherein a tensioning support ring seat is arranged inside the mesh stent; when the lower stent ring seat is pushed toward the upper stent ring seat, the vertical connecting member also synchronously drives the upper stent ring seat to move toward the lower stent ring seat through a gear mechanism, and at the same time, the gear mechanism pushes the arc-shaped connecting member outward from the arc seat, so that the tensioning support ring seat supports the mesh stent and forms effective support for the sinus opening passage, thereby avoiding blockage of the sinus opening passage; the gear mechanism is automatically locked inside a second accommodating cavity, so that when the mesh stent is supported, it can be ensured that the distance between adjacent arc seats after connection through the arc-shaped connecting member will no longer be reduced, thereby avoiding the mesh stent from shrinking inward.

Description

Technical Field

[0001] The invention relates to the technical field of sinus stents, in particular to a sinus stent and a manufacturing method thereof. Background Art

[0002] Sinus stents are devices used to support the tissues in the sinuses, and are usually used to treat sinusitis, nasal polyps, and other diseases. Some special medical instruments and equipment are needed, such as nasal endoscopes and surgical instruments, to implant a sinus stent in the nasal cavity, and then the sinus stent is opened to support the patient's sinus tissues and structures.

[0003] The use of sinus stents can improve the ventilation and drainage of the nasal cavity and sinuses, and relieve symptoms such as nasal congestion and headaches. Sinus stents come in a variety of shapes and materials, among which titanium alloy, stainless steel, silicone, etc. are common. After being inserted into the sinus passage, the sinus stent is not convenient to open, so that the support effect on the sinus passage is not good. After long-term use, the opened sinus stent will gradually shrink inward, resulting in poor support. After the sinus stent is placed, it is necessary to deliver additional drugs into the sinus passage, which is not convenient for the effective entry of drugs and is not conducive to the treatment of diseases such as sinusitis. To this end, we introduce a sinus stent and a method for making it. Summary of the invention

[0004] The object of the present invention is to provide a sinus stent and a manufacturing method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a sinus stent, comprising stent ring seats symmetrically distributed up and down and a mesh stent connected between the upper and lower sets of stent ring seats, wherein a tensioning support ring seat is provided inside the mesh stent;

[0006] The tension support ring seat comprises four groups of equally spaced arc seats fixed to the inner wall of the mesh support and arc connectors connecting adjacent arc seats;

[0007] Both sides of the arc seat are connected to the corresponding bracket ring seat through vertical connecting pieces, one end of the vertical connecting piece is connected to the gear mechanism inside the arc seat, and the other end of the vertical connecting piece extends into the bracket ring seat;

[0008] When the lower bracket ring seat pushes toward the upper bracket ring seat, the vertical connector also synchronously drives the upper bracket ring seat to move toward the lower bracket ring seat through the gear mechanism. At the same time, the gear mechanism pushes the arc-shaped connector outward from the arc-shaped seat, thereby tensioning the support ring seat to support the mesh bracket, and the vertical connector pierces the annular medicine storage bag inside the bracket ring seat.

[0009] Preferably, the bracket ring seat is provided with a placement groove for placing the annular medicine storage bag, and the placement groove is also provided with an annular net for preventing the annular medicine storage bag from falling off, and the inner side wall of the bracket ring seat is provided with a plurality of equally spaced medicine leakage grooves, which are connected to the placement groove.

[0010] Preferably, a first accommodating cavity is provided in the center of the bottom of the placement groove, a connecting head is provided inside the first accommodating cavity, one end of the vertical connecting piece extends into the first accommodating cavity through the groove on the bracket ring seat and is connected to the connecting head, an annular rubber ring is sleeved on the side of the connecting head, the outer wall of the annular rubber ring is tightly attached to the inner wall of the first accommodating cavity, and a conical pointed seat is provided in the middle of the end of the connecting head.

[0011] Preferably, a second accommodating cavity is provided inside the arc-shaped seat, and the gear mechanism includes a group of driving gears and two groups of driven gears movably connected inside the second accommodating cavity, and the two groups of driven gears are symmetrically meshed on both sides of the driving gear;

[0012] A first rotating disk is fixed in the middle of the driving gear, and connecting plates are symmetrically arranged on both sides of the first rotating disk. The vertical connecting member extends into a U-shaped seat connected to one end of the second accommodating cavity, and the U-shaped seat is movably connected to the end of the corresponding connecting plate through a pin shaft;

[0013] A second rotating disk is fixed at the middle of the driven gear, and a shifting rod is connected to the second rotating disk.

[0014] Preferably, a first rotating shaft passes through the middle of the driving gear and the first rotating disk, and the first rotating shaft is movably connected to the second accommodating cavity. A second rotating shaft passes through the middle of the driving gear and the first rotating disk, and the second rotating shaft is movably connected to the second accommodating cavity.

[0015] Preferably, a sliding plate is fixed to one end of the arc-shaped connecting member extending into the second accommodating cavity, the side of the sliding plate abuts against the inner wall of the second accommodating cavity through a U-shaped metal spring sheet, and the lever abuts against the sliding plate, and a slot is provided in the middle of the sliding plate.

[0016] The present invention also provides a method for manufacturing a sinus stent, which specifically comprises the following steps:

[0017] S1. Install the gear mechanism inside the arc seat, and allow the vertical connecting member to extend through the arc seat;

[0018] S2, fix the arc seat on the tension support ring seat to the inner wall of the mesh bracket, and make the vertical connecting piece extend into the arc seat;

[0019] S3. Finally, the upper and lower ends of the mesh support are fixed to the upper and lower sets of support ring seats.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: when the lower bracket ring seat pushes toward the upper bracket ring seat, the vertical connecting member also synchronously drives the upper bracket ring seat to move toward the lower bracket ring seat through the gear mechanism, and at the same time, the gear mechanism pushes the arc-shaped connecting member outward from the arc-shaped seat, so that the tensioning support ring seat supports the mesh bracket and forms effective support for the sinus opening passage, thereby avoiding blockage of the sinus opening passage;

[0021] The gear mechanism is automatically locked inside the second accommodating chamber, and the gear mechanism also achieves locking of the relative positions of the arc connector and the arc seat by abutting the sliding plate through the lever, that is, the distance between adjacent arc seats is maximized after being connected through the arc connector and the tensioning support ring seat causes tension on the mesh bracket, so that when the mesh bracket is supported open, it can be ensured that the distance between adjacent arc seats will no longer be reduced after being connected through the arc connector, so that the tensioning support ring seat always causes tension on the mesh bracket, thereby preventing the mesh bracket from shrinking inward.

[0022] At the same time, the vertical connecting piece pierces the annular drug storage bag inside the bracket ring seat, and the drug in the annular drug storage bag flows out, and the drug enters the sinus opening channel through the drug leakage groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in the initial state;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0025] Figure 3 It is a schematic cross-sectional view of the arc-shaped connecting member, the arc-shaped seat and the gear mechanism after being connected in the present invention;

[0026] Figure 4 It is a schematic cross-sectional view of the structure of adjacent arc-shaped seats connected by an arc-shaped connecting piece according to the present invention;

[0027] Figure 5 It is a front view structural schematic diagram of the connection between the gear mechanism and the vertical connecting member of the present invention;

[0028] Figure 6 It is a schematic diagram of the exploded structure of the connection between the gear mechanism and the vertical connecting member of the present invention;

[0029] Figure 7 It is a schematic diagram of the exploded structure of the connection between the bracket ring seat and the tension support ring seat of the present invention;

[0030] Figure 8 It is a front view structural schematic diagram of the tensioning support ring seat of the present invention when the mesh support is tensioned.

[0031] In the figure: 1. bracket ring seat; 2. annular net; 3. arc seat; 301. second accommodating chamber; 302. lever; 303. driven gear; 304. driving gear; 305. connecting plate; 306. second rotating shaft; 307. first rotating disk; 308. second rotating disk; 309. U-shaped seat; 310. pin; 311. first rotating shaft; 312. waist round hole; 4. mesh bracket; 5. arc connector; 501. sliding plate; 502. U-shaped metal spring; 503. slot; 6. vertical connector; 7. annular drug storage bag; 8. drug leakage slot; 9. placement slot; 10. slot; 11. drug; 12. first accommodating chamber; 13. conical pointed seat; 14. connector; 15. annular rubber ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-8 , the present invention provides a technical solution: Embodiment 1:

[0034] A sinus stent includes a stent ring seat 1 symmetrically distributed in the upper and lower parts and a mesh stent 4 connected between the upper and lower stent ring seats 1. The stent ring seat 1 is provided with a placement groove 9 for placing an annular drug storage bag 7. The annular drug storage bag 7 is provided with a drug 11. The drug 11 is a liquid drug or a soluble granular drug.

[0035] An annular net 2 is provided inside the placement groove 9 to prevent the annular drug storage bag 7 from falling off. The inner side wall of the bracket ring seat 1 is provided with a plurality of drug leakage grooves 8 distributed at equal intervals, and the drug leakage grooves 8 are connected to the placement groove 9.

[0036] A first accommodating cavity 12 is provided at the center of the bottom of the placement groove 9, and a connecting head 14 is provided inside the first accommodating cavity 12. One end of the vertical connecting piece 6 extends into the first accommodating cavity 12 through the slot 10 on the bracket ring seat 1 and is connected to the connecting head 14. An annular rubber ring 15 is sleeved on the side of the connecting head 14. The outer wall of the annular rubber ring 15 is tightly attached to the inner wall of the first accommodating cavity 12. A conical pointed seat 13 is provided in the middle of the end of the connecting head 14.

[0037] When the connector 14 at one end of the vertical connector 6 extends through the slot 10 on the bracket ring seat 1, the inclined surfaces on both sides of the top of the connector 14 can prop open the slot 10 so that the connector 14 can smoothly extend into the slot 10. After the connector 14 extends into the first accommodating cavity 12, the connector 14 is stuck on both sides of the slot 10, which can prevent the connector 14 from detaching from the first accommodating cavity 12 through the slot 10, thereby preventing the vertical connector 6 from being disconnected from the bracket ring seat 1.

[0038] By setting the annular rubber ring 15, the outer wall of the annular rubber ring 15 is closely attached to the inner wall of the first accommodating chamber 12, so that the connector 14 can be positioned at a distance from the annular drug storage bag 7 (such as Figure 2 This prevents the conical tip 13 on the connector 14 from contacting the annular medicine storage bag 7 and puncturing the annular medicine storage bag 7.

[0039] A tension support ring seat is provided inside the mesh support 4, and the tension support ring seat includes four groups of equally spaced arc seats 3 fixed to the inner wall of the mesh support 4 and arc connectors 5 connecting adjacent arc seats 3;

[0040] The end of the arc-shaped connecting member 5 extending into the second accommodating cavity 301 is fixed with a sliding plate 501, the side of the sliding plate 501 abuts against the inner wall of the second accommodating cavity 301 through a U-shaped metal spring sheet 502, and the lever 302 abuts against the sliding plate 501, and a slot 503 is provided in the middle of the sliding plate 501.

[0041] When the lever 302 moves along the sliding plate 501 to the inside of the card slot 503, the lever 302 is limited and fixed, so that the driving gear 304 and the driven gear 303 of the gear mechanism no longer rotate, so that when the lower bracket ring seat 1 continues to be pushed toward the upper bracket ring seat 1, the connecting head 14 on the vertical connecting member 6 moves along the first accommodating cavity 12 toward the direction close to the annular medicine storage bag 7 until the conical pointed seat 13 pierces the annular medicine storage bag 7;

[0042] After the driving gear 304 and the driven gear 303 stop rotating, the gear mechanism is locked inside the second accommodating chamber 301, and the gear mechanism also abuts against the sliding plate 501 through the lever 302, thereby locking the relative positions of the arc connector 5 and the arc seat 3, that is, after being connected through the arc connector 5, the distance between adjacent arc seats 3 is maximized and the tensioning support ring seat causes tension on the mesh bracket 4, so that when the mesh bracket 4 is supported open, it can be ensured that the distance between adjacent arc seats 3 after being connected through the arc connector 5 will no longer be reduced, so that the tensioning support ring seat always causes tension on the mesh bracket 4, thereby preventing the mesh bracket 4 from shrinking inward.

[0043] The sliding plate 501 is elastic and can be bent into a V shape, which is conducive to extending into the second accommodating cavity 301 through the two ends of the arc seat 3. After the sliding plate 501 is extended into the second accommodating cavity 301, the sliding plate 501 automatically restores to a vertical state under the action of its own elastic force (such as Figure 3 As shown), the upper and lower ends of the sliding plate 501 are slidably connected to the upper and lower inner walls of the second accommodating cavity 301.

[0044] Under the abutment effect of the U-shaped metal spring piece 502 on the inner wall of the second accommodating cavity 301, the arc-shaped connecting member 5 extends out of the second accommodating cavity 301 for a distance, thereby ensuring that the distance between adjacent arc-shaped seats 3 after being connected by the arc-shaped connecting member 5 is the shortest. At this time, the outer diameter of the tensioning support ring seat composed of the arc-shaped seat 3 and the arc-shaped connecting member 5 is the smallest, and the tensioning support ring seat has not yet caused tension to the mesh stent 4. At this time, the outer diameter of the mesh stent 4 is in the smallest state, that is, at this time, the outer diameter of the mesh stent 4 is smaller than the outer diameter of the stent ring seat 1. When the sinus stent is delivered into the sinus ostium passage, the mesh stent 4 will not contact the sinus ostium passage, which is conducive to the smooth delivery of the sinus stent into the sinus ostium passage;

[0045] Both sides of the arc seat 3 are connected to the corresponding bracket ring seat 1 through a vertical connecting piece 6, one end of the vertical connecting piece 6 is connected to the gear mechanism inside the arc seat 3, and the other end of the vertical connecting piece 6 extends into the bracket ring seat 1;

[0046] The arc seat 3 is provided with a second accommodating cavity 301 inside, and the gear mechanism includes a set of driving gears 304 and two sets of driven gears 303 movably connected inside the second accommodating cavity 301, and the two sets of driven gears 303 are symmetrically meshed on both sides of the driving gear 304;

[0047] A first rotating disk 307 is fixed at the middle of the driving gear 304, and a second rotating disk 308 is fixed at the middle of the driven gear 303;

[0048] A first rotating shaft 311 passes through the middle of the driving gear 304 and the first rotating disk 307 , and the first rotating shaft 311 is movably connected to the second accommodating chamber 301 . A second rotating shaft 306 passes through the middle of the driving gear 304 and the first rotating disk 307 , and the second rotating shaft 306 is movably connected to the second accommodating chamber 301 .

[0049] Connecting plates 305 are symmetrically provided on both sides of the first rotating disk 307. The vertical connecting member 6 extends into a U-shaped seat 309 connected to one end of the second accommodating cavity 301. The U-shaped seat 309 is movably connected to the end of the corresponding connecting plate 305 through a pin shaft 310. The pin shaft 310 passes through a waist-shaped hole 312 on the end of the connecting plate 305. A lever 302 is connected to the second rotating disk 308.

[0050] When the lower bracket ring seat 1 is pushed toward the upper bracket ring seat 1, the vertical connecting piece 6 also synchronously drives the upper bracket ring seat 1 to move toward the lower bracket ring seat 1 through the gear mechanism. At the same time, the gear mechanism causes the arc-shaped connecting piece 5 to be pushed outward from the arc seat 3, so that the tensioning support ring seat supports the mesh bracket 4, and the vertical connecting piece 6 pierces the annular medicine storage bag 7 inside the bracket ring seat 1.

[0051] The present invention also provides a method for manufacturing a sinus stent, which specifically comprises the following steps:

[0052] S1, installing the gear mechanism inside the arc seat 3, and making the vertical connecting member 6 extend through the arc seat 3;

[0053] S2, fix the arc seat 3 on the tension support ring seat to the inner wall of the mesh bracket 4, and make the vertical connecting piece 6 extend into the arc seat 3;

[0054] S3. Finally, the upper and lower ends of the mesh support 4 are fixed to the upper and lower groups of support ring seats 1.

[0055] Specifically, when in use, the sinus stent is sent into the sinus passage, and when the bracket ring seat 1 above the sinus stent is against the narrow part of the sinus passage, that is, the sinus stent is installed in place, at this time, the bracket ring seat 1 below is pushed toward the bracket ring seat 1 above, and the vertical connecting member 6 on the bracket ring seat 1 below pushes the driving gear 304 and the first rotating disk 307 to rotate counterclockwise around the second rotating shaft 306 through the connecting plate 305 on the right side, so that the first rotating disk 307 pulls the upper bracket ring seat 1 downward through the connecting plate 305 on the left side and the corresponding vertical connecting member 6, so that the upper and lower groups of bracket ring seats 1 are brought close to each other;

[0056] At this time, the driving gear 304 drives the driven gear 303, the second rotating disk 308 and the lever 302 to rotate clockwise, and the lever 302 abuts against the sliding plate 501, so that the sliding plate 501 drives the arc-shaped connecting member 5 to extend toward both ends of the arc-shaped seat 3 until the U-shaped metal spring 502 is completely compressed.

[0057] At this time, the distance between the adjacent arc seats 3 becomes larger after being connected by the arc connector 5. When the distance between the upper and lower groups of bracket ring seats 1 is the shortest, the outer diameter of the tension support ring seat composed of the arc seat 3 and the arc connector 5 is the largest. The tension support ring seat tensions the mesh bracket 4, so that the mesh bracket 4 is supported and effectively supports the sinus passage to avoid blockage of the sinus passage.

[0058] When the distance between the upper and lower sets of bracket ring seats 1 is the shortest, the connector 14 on the vertical connector 6 moves toward the annular drug storage bag 7 until the conical pointed seat 13 pierces the annular drug storage bag 7, and the drug 11 in the annular drug storage bag 7 flows out, and the drug 11 enters the sinus opening through the drug leakage groove 8.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sinus stent, comprising stent ring seats symmetrically distributed in the upper and lower parts and a mesh stent connected between the upper and lower sets of stent ring seats, characterized in that: A tensioning support ring seat is provided inside the mesh support; The tension support ring seat comprises four groups of equally spaced arc seats fixed to the inner wall of the mesh support and arc connectors connecting adjacent arc seats; Both sides of the arc seat are connected to the corresponding bracket ring seat through vertical connecting pieces, one end of the vertical connecting piece is connected to the gear mechanism inside the arc seat, and the other end of the vertical connecting piece extends into the bracket ring seat; When the lower bracket ring seat pushes toward the upper bracket ring seat, the vertical connecting piece also drives the upper bracket ring seat to move toward the lower bracket ring seat synchronously through the gear mechanism. At the same time, the gear mechanism pushes the arc-shaped connecting piece outward from the arc seat, so that the tensioning support ring seat supports the mesh bracket, and the vertical connecting piece pierces the annular drug storage bag inside the bracket ring seat. A second accommodating cavity is provided inside the arc-shaped seat, and the gear mechanism includes a group of driving gears and two groups of driven gears movably connected inside the second accommodating cavity, and the two groups of driven gears are symmetrically meshed on both sides of the driving gear; A first rotating disk is fixed in the middle of the driving gear, and connecting plates are symmetrically arranged on both sides of the first rotating disk. The vertical connecting member extends into a U-shaped seat connected to one end of the second accommodating cavity, and the U-shaped seat is movably connected to the end of the corresponding connecting plate through a pin shaft; A second rotating disk is fixed to the middle of the driven gear, and a shifting rod is connected to the second rotating disk; A first rotating shaft passes through the middle of the driving gear and the first rotating disk, and the first rotating shaft is movably connected to the second accommodating cavity. A second rotating shaft passes through the middle of the driving gear and the first rotating disk, and the second rotating shaft is movably connected to the second accommodating cavity. A sliding plate is fixed to one end of the arc-shaped connecting member extending into the second accommodating cavity. The side of the sliding plate abuts against the inner wall of the second accommodating cavity through a U-shaped metal spring sheet, and the lever abuts against the sliding plate. A slot is provided in the middle of the sliding plate.

2. A sinus stent according to claim 1, characterized in that: The bracket ring seat is provided with a placement groove for placing the annular drug storage bag, and the placement groove is also provided with an annular net for preventing the annular drug storage bag from falling off. The inner side wall of the bracket ring seat is provided with a plurality of equally spaced drug leakage grooves, which are connected to the placement groove.

3. A sinus stent according to claim 2, characterized in that: A first accommodating cavity is provided in the center of the bottom of the placement groove, and a connecting head is provided inside the first accommodating cavity. One end of the vertical connecting piece extends into the first accommodating cavity through the groove on the bracket ring seat and is connected to the connecting head. An annular rubber ring is sleeved on the side of the connecting head, and the outer wall of the annular rubber ring is tightly attached to the inner wall of the first accommodating cavity. A conical pointed seat is provided in the middle of the end of the connecting head.

4. A method for manufacturing a sinus stent according to any one of claims 1 to 3, characterized in that: The specific steps include: S1. Install the gear mechanism inside the arc seat, and allow the vertical connecting member to extend through the arc seat; S2, fix the arc seat on the tension support ring seat to the inner wall of the mesh bracket, and make the vertical connecting piece extend into the arc seat; S3. Finally, the upper and lower ends of the mesh support are fixed to the upper and lower sets of support ring seats.

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