Oral maxillary sinus fistula plugging device

Abstract

The invention belongs to the technical field of oral cavity maxillary sinus fistula plugging instruments, and particularly relates to an oral cavity maxillary sinus fistula plugging device. Comprising a horizontally-arranged operation pipe, a push rod penetrates through the operation pipe, and a blocking net pipe is arranged at the left end of the operation pipe; a first supporting plate is fixed to the right end of the blocking net pipe, a second supporting plate is fixed to the left end of the blocking net pipe, a lock rod is hinged to the left end of the operation pipe, and the lock catch end of the lock rod is locked to the second supporting plate. A lock hook is fixed on the second supporting plate; the lock catch end of the lock hook independently penetrates through the first through groove and pushes the lock rod to unlock the second supporting plate, and meanwhile the lock catch end can be locked on the first supporting plate. The device does not need to enter the oral cavity of a patient for operation, so that the separation work of the plugging net pipe and the push rod can be conveniently and quickly completed, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of oral-maxillary sinus fistula blocking devices, and in particular relates to an oral-maxillary sinus fistula blocking device. Background Art

[0002] The maxillary sinus is a cavity in the maxillary bone, with its lower wall continuing with the alveolar ridge of the maxillary posterior teeth. The roots of the teeth in the maxillary posterior teeth are very close to the floor of the maxillary sinus and may even protrude into the sinus cavity. An oral-antral fistula refers to a communicating passageway between the oral cavity and the maxillary sinus that is caused by defects in soft tissue and bone tissue due to certain reasons such as periodontitis, trauma, abnormal bone absorption, and tumors, and that cannot heal after perforation and epithelialization. Most patients with oral-antral fistulas will have a certain degree of maxillary sinusitis, and liquid will enter the nasal cavity when the patient drinks water or eats daily. The patient may also experience clinical manifestations such as dull pain in the head and face, and increased nasal discharge, which have a significant impact on the patient's daily life.

[0003] Surgical repair of oral-maxillary sinus fistula is widely used in clinical practice. There is a kind of blocking mesh tube currently on the market. Medical staff apply pressure to the blocking mesh tube to make it open into an umbrella state, covering the patient's oral-maxillary sinus fistula to block it, avoiding the pain that may be caused by surgical operation, and avoiding potential bleeding, anesthesia accidents, etc. When the mesh occluder is opened, it needs to be pushed by a push rod. After the blocking is completed, the push rod and the blocking part need to be separated, leaving the blocking part in the patient's body. Usually, the removal of the push rod requires the assistance of some instruments or manual operations, and it needs to be completed in the patient's mouth, but the operating space in the mouth is small, and it is inconvenient for medical staff to operate, resulting in reduced efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide an oral-maxillary sinus fistula occluder, which can quickly and conveniently complete the separation of the push rod and the occluding network tube outside the patient's mouth, thereby improving the surgical efficiency to a certain extent.

[0005] The oral and maxillary sinus fistula occluder includes a horizontally arranged operating tube, a push rod independent of the operating tube is installed in the operating tube, and a blocking net tube independent of the operating tube is provided at the left end of the operating tube; a first support plate is fixed to the right end of the blocking net tube, and a second support plate is fixed to the left end of the operating tube, and a plurality of locking rods swinging along the center direction are hingedly connected to the left end of the operating tube; a first through slot is provided on the first support plate, and a second through slot is provided on the second support plate, and the locking end of the locking rod passes through the first through slot and the second through slot in sequence and locks on the second support plate; a locking hook is fixed on the second support plate corresponding to each locking rod, and the locking hook is made of elastic material; the locking end of the locking hook independently passes through the first through slot and pushes the locking rod to release the lock of the second support plate, and can be locked on the first support plate at the same time; the blocking net tube is made of elastic material.

[0006] Furthermore, a push head is fixed to the pushing end of the push rod, and the push head is made of elastic material, and the push head fits against the inner side of the locking rod.

[0007] Furthermore, a plurality of wing plates are fixed on the push rod, and the wing plates are in contact with the inner side wall of the operating tube.

[0008] Furthermore, a finger grip plate is fixed to the right end of the operating tube.

[0009] Furthermore, there are three locking rods, which are evenly spaced and distributed on the circumference of the operating tube.

[0010] Furthermore, the blocking network tube is made of titanium alloy.

[0011] Furthermore, the inner notch of the first through slot is provided with a first chamfer for guiding the locking hook to pass through.

[0012] Furthermore, the outer notch of the first through slot is provided with a second chamfer for receiving the locking hook and locking it on the operating tube.

[0013] Furthermore, a waist ring is fixed in the middle of the blocking network tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention pushes the first support plate toward the second support plate through the push rod. When the locking hook locks the first support plate, the locking rod releases the lock on the second support plate and exits from the second through slot and the first through slot in sequence, thereby realizing the separation of the push rod part and the blocking mesh tube part. There is no additional operation step and no need to enter the patient's oral cavity for operation, so that the separation of the blocking mesh tube and the push rod can be completed conveniently and quickly, and the efficiency of the operation is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 Schematic diagram of the left view structure; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle; Figure 4 It is a three-dimensional structural diagram of the present invention; Figure 5 It is an exploded structural diagram of the present invention; Figure 6 for Figure 3 Schematic diagram of the local enlarged structure at B in the middle; Figure 7 This is a simplified schematic diagram of the plugging network after it is expanded; Figure 8This is a simplified schematic diagram of Example 2 after the blocking network management is expanded; The names of the components in the figure are: 1. Operating tube; 2. First support plate; 3. Sealing mesh tube; 4. Second support plate; 5. Locking rod; 6. Finger plate; 7. Tail handle; 8. Push rod; 9. Wing plate; 10. Push head; 11. Locking hook; 12. Waist ring. DETAILED DESCRIPTION

[0016] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0017] Example 1 The oral-maxillary sinus fistula occluder described in this embodiment is as follows Figures 1 to 7 As shown, it includes a horizontally arranged operating tube 1, in which a push rod 8 independent of the operating tube is installed, and three wing plates 9 are fixed on the push rod 8, which fit the inner wall of the operating tube 1; during production, when the diameter of the push rod 8 is smaller than the operating tube 1, the fixed wing plates 9 can enable the push rod 8 to move stably along the length direction of the operating tube 1. A finger clip plate 6 is fixed at the right end of the operating tube 1. A tail handle 7 is fixed at the tail of the push rod 8. When in use, the medical staff clips two fingers on the finger clip plate 6, and presses the tail handle 7 with the thumb to push the push rod 8 to move. The whole can imitate the method of a syringe to achieve one-handed operation, making the operation convenient and quick.

[0018] The left end of the operating tube 1 is provided with a blocking mesh tube 3 independent of it, the right end of the blocking mesh tube 3 is fixed with a first support plate 2, and the left end of the blocking mesh tube 3 is fixed with a second support plate 4. The blocking mesh tube 3 is made of elastic material; usually, the blocking mesh tube 3 is made of titanium alloy, which has high strength, elastic deformation ability, good biocompatibility and corrosion resistance, and is widely used in the medical field. In addition, the blocking mesh tube 3 can also be magnesium alloy.

[0019] like Figure 7 As shown, the blocking net tube 3 is tubular throughout. When the first support plate 2 and the second support plate 4 are close to each other, the blocking net tube 3 slowly expands under pressure and blocks the oral maxillary sinus fistula.

[0020] like Figure 5As shown, three locking rods 5 are hinged on the left end of the operating tube 1, and the three locking rods 5 can swing along the center line direction of the operating tube 1; during production, the three locking rods 5 are evenly spaced on the circumference of the operating tube 1. The left end of the operating tube 1 is provided with three hinge grooves evenly spaced along its circumference, and the hinge ends of the locking rods 5 are located in the hinge grooves and hinged by hinge columns. When in use, the three locking rods 5 swing along the center direction of the operating tube 1. The locking end of the locking rod 5 is in the shape of a hook, which can be locked on the second support plate 4 on the outside of the second through groove. The locking rod 5 swings inward to contact the second support plate 4 and lock it.

[0021] like Figure 2 and Figure 5 As shown, the first support plate 2 is provided with a first through slot for all the locking rods 5 to pass through independently, and the second support plate 4 is provided with a second through slot for all the locking rods 5 to pass through independently, and the locking end of the locking rod 5 is locked on the second support plate 4; corresponding to the three locking rods 5, there are three first through slots and three second through slots on the first support plate 2 and the second support plate 4, and the three locking rods 5 pass through the three first through slots and the second through slots respectively; the locking rod 5 can be locked on the second support plate 4 by swinging outward.

[0022] A pusher head 10 is fixed to the pushing end of the push rod 8. This head 10 is made of an elastic material and fits snugly against the inner side of the locking rod 5. Typically made of medical silicone, the head 10's inherent elasticity and its close fit with the locking rod 5 prevent the locking rod 5 from swinging inward and disengaging from the second support plate 4. During use, the push rod 8 pushes the first support plate 2 toward the second support plate 4. The second support plate 4, constrained by the locking rod 5, remains in its original position, awaiting the first support plate 2's approach. As the first and second support plates 2 and 4 approach, the sealing mesh tube 3 gradually expands.

[0023] like Figure 3 and Figure 6 As shown, corresponding to each locking rod 5, a locking hook 11 is fixed on the second support plate 4, which can pass through the first through slot and lock on the first support plate 2. The locking hook 11 is made of elastic material; the locking hook 11 independently passes through the first through slot and pushes the locking rod 5 to release the lock on the second support plate 4.

[0024] The back of the locking hook 11 is inclined. When the first support plate 2 approaches the second support plate 4, the back of the locking hook 11 first contacts the first through groove, and in the process of the first support plate 2 approaching the second support plate 4, the locking hook 11 is affected by the inclined surface of the hook back, and the locking hook itself is made of elastic material, so that the locking hook 11 is slowly squeezed into the first through groove; when the locking hook 11 enters the first through groove as a whole, it also has to pass through the first through groove. At the same time, the locking rod 5 is squeezed by the locking hook 11 until it completely enters the first through groove, and the locking rod 5 swings inward and disengages from the locking of the second support plate 4. As a result, the locking rod 5 can be disengaged along the second through groove and the first through groove, and at this time the first support plate 2 and the second support plate 4 are locked together by the locking hook 11, keeping the blocking network tube 3 open, thereby completing the blocking of the oral maxillary sinus fistula.

[0025] The above lock hook 11 not only pushes the lock rod 5 out of the lock but also locks the first support plate 2 and the second support plate 4. It realizes multiple functions with a simple structure, which makes the production cost lower, the manufacturing more convenient, and the use more convenient.

[0026] like Figure 6 As shown, the inner notch of the first through slot is provided with a first chamfer for guiding the lock hook 11 to pass through. The first chamfer cooperates with the inclined surface of the hook back of the lock hook 11, making it easier for the lock hook 11 to enter the first through slot.

[0027] The outer notch of the first through-slot is provided with a second chamfer for receiving and latching the locking hook 11 onto the operating tube 1. The second chamfer effectively prevents the locking rod 5 from releasing the lock from the second support plate 4 before the latching end of the locking hook 11 has fully passed through the first through-slot. With the second chamfer, although the locking hook 11 has not yet fully passed through the first through-slot, it has just passed through the first chamfer and is in the area of the second chamfer. At this time, if the locking rod 5 releases the lock from the second support plate 4, the locking rod 5 can still latch onto the first support plate 2 under its own elastic force and guided by the second chamfer.

[0028] After the occlusion of the septum 3 is complete, the occlusion of the septum 3 is completed, and the occlusion of the septum 3 is completed.

[0029] Details: When the lock hook 11 passes through the first through slot, the lock rod 5 is squeezed and swings inward, and the elastically arranged push head 10 is squeezed to a certain extent; while the lock rod 5 releases the lock on the second support plate 4, under the opposite forces of the second support plate 4 and the locking end of the lock rod 5, the locking end of the lock rod 5 will retreat into the second lock slot in an instant. Because the first support plate 2 and the second support plate 4 are locked to each other at this time, the movement trend of the second support plate 4 to the left disappears, so the locking end of the lock rod 5 may not be able to retreat into the second lock slot immediately. At this time, it is necessary to withdraw the push rod 8 first to withdraw the push head 10. After the inner side of the lock rod 5 is unconstrained, it can swing inward and withdraw from the second through slot and the first through slot in turn.

[0030] Example 2 like Figure 8 As shown, a waist ring 12 is fixed in the middle of the blocking net tube 3; the waist ring 12 can make the blocking net tube 3 expand into two umbrella-shaped structures, respectively fitting on the inner and outer walls of the maxillary sinus fistula, which can better achieve blocking and at the same time have the purpose of fixation.

Claims

1. An oral-maxillary sinus fistula occluder, comprising a horizontally arranged operating tube (1), a push rod (8) independently of the operating tube (1) being inserted into the operating tube (1), a blocking net tube (3) independently of the operating tube (1) being provided at the left end thereof; a first support plate (2) being fixed to the right end of the blocking net tube (3), and a second support plate (4) being fixed to the left end thereof, characterized in that: The left end of the operating tube (1) is hinged with a plurality of locking rods (5) that swing along the center direction thereof; a first through slot is provided on the first support plate (2), and a second through slot is provided on the second support plate (4); the locking end of the locking rod (5) passes through the first through slot and the second through slot in sequence and is locked on the second support plate (4); a locking hook (11) is fixed on the second support plate (4) corresponding to each locking rod (5), and the locking hook (11) is made of elastic material; the locking end of the locking hook (11) independently passes through the first through slot and pushes the locking rod (5) to release the lock on the second support plate (4), and can be locked on the first support plate (2) at the same time; the blocking network tube (3) is made of elastic material.

2. The oral-maxillary antral fistula occluder according to claim 1, characterized in that: A push head (10) is fixed to the pushing end of the push rod (8), and the push head (10) is made of elastic material. The push head (10) fits in contact with the inner side of the locking rod (5).

3. The oral-maxillary antral fistula occluder according to claim 1, characterized in that: A plurality of wing plates (9) are fixed on the push rod (8), and the wing plates (9) are in contact with the inner side wall of the operating tube (1).

4. The oral-maxillary antral fistula occluder according to claim 1, characterized in that: A finger plate (6) is fixed to the right end of the operating tube (1).

5. The oral-maxillary antral fistula occluder according to claim 1, characterized in that: There are three locking rods (5), and the three locking rods (5) are distributed at equal intervals on the circumference of the operating tube (1).

6. The oral-maxillary antral fistula occluder according to claim 1, characterized in that: The blocking network tube (3) is made of titanium alloy.

7. The oral-maxillary antral fistula occluder according to claim 1, characterized in that: The inner notch of the first through slot is provided with a first chamfer for guiding the locking hook (11) to pass through.

8. The oral-maxillary antral fistula occluder according to claim 1, characterized in that: The outer notch of the first through slot is provided with a second chamfer for receiving the locking hook (11) and locking it on the operating tube (1).

9. The oral-maxillary-antral fistula occluder according to claim 1, characterized in that: A waist ring (12) is fixed to the middle of the blocking mesh tube (3).

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