A fixed drainage obstruction device for use after oral and maxillofacial cyst fenestration and method of use thereof

Abstract

The application discloses a fixed drainage blocking device used after oral and maxillofacial cyst fenestration and a use method thereof, relates to the technical field of oral and maxillofacial surgery medical instruments, and comprises the following parts: translation sliding grooves and limiting mechanisms are arranged on the two sides of a central drainage channel; two symmetrical translation unfolding bodies are arranged in the central drainage channel; the two translation unfolding bodies can be switched between a folding state and an unfolding state through the translation sliding grooves; two clamping flaps are arranged corresponding to the translation unfolding bodies, and the two clamping flaps are respectively connected with the lower edges of the translation unfolding bodies. An external fixing ring is arranged at one end of the translation unfolding body far away from the cyst mouth. The fixed drainage blocking device used after oral and maxillofacial cyst fenestration and the use method thereof integrate the drainage function and the unfolding mechanism in the same structure, realize the integration of drainage and fixation, and greatly reduce the postoperative nursing burden.

Description

Technical Field

[0001] This invention relates to the field of oral and maxillofacial surgical medical device technology, and more specifically to a fixed drainage and obstruction device and its method of use after fenestration of oral and maxillofacial cysts. Background Technology

[0002] Oral and maxillofacial cysts are pathological cavities lined with epithelium, often containing fluid or semi-solid contents. They are classified into two main categories based on their origin: Odontogenic cysts: originating from dental lamina remnants, Malpighian epithelium remnants, etc. (e.g., dentigerous cysts, periapical cysts, odontogenic keratocysts, etc.). Non-odontogenic cysts: often associated with residual epithelium from the fusion of facial protrusions during embryonic development (e.g., nasopalatine duct cysts, nasoalveolar cysts, median cysts, etc.).

[0003] Cyst formation and progression typically involve the following steps: Stimulation and abnormal proliferation of epithelial remnants: Inflammation, minor trauma, or developmental abnormalities can stimulate epithelial remnants, forming epithelial masses; Central degeneration and liquefaction: The center of the mass undergoes degeneration and necrosis due to insufficient blood supply / metabolic disorders, forming a liquefied cavity; Osmotic pressure-driven expansion: The decomposition products of cyst fluid increase the osmotic pressure within the cavity, and the surrounding tissue fluid continues to infiltrate, increasing the pressure within the cavity and causing the cyst to gradually enlarge and compress adjacent tissues and bone.

[0004] Clinical consequences include: bone resorption of the jawbone, tooth displacement or loosening, facial bulging / asymmetry, and secondary infection; in severe cases, it affects chewing, speech, and aesthetics. Symptoms often present as painless, slow expansion, but pain and fluctuation may occur when infection is present.

[0005] The mainstream surgical strategies for maxillofacial cysts include enucleation and marsupialization / decompression, with the choice depending on the type, size, location, and relationship to important anatomical structures of the lesion.

[0006] Cyst removal surgery: Key points: Complete removal of the cyst wall; suitable for small lesions with clear boundaries and high separation from important structures. Limitations: When the cyst is large or adjacent to important structures such as nerves or the maxillary sinus, there are risks of large surgical trauma, large bone cavity defects, and nerve and blood vessel damage. Postoperative treatment of a large bone cavity may also be required to promote healing.

[0007] Cyst fenestration, principle: to create a permanent opening in the cyst wall that communicates with the oral cavity / nasal cavity / maxillary sinus, reduce the pressure inside the cyst, promote the drainage of cyst fluid and bone regeneration, and gradually shrink the cyst cavity. If necessary, a second curettage can be performed later.

[0008] While existing oral and maxillofacial cyst fenestration techniques can effectively reduce pressure and promote bone regeneration, they still have several shortcomings in terms of postoperative drainage and window maintenance: 1. The window is difficult to keep open for a long time: Traditional fenestration surgery often uses methods such as suturing the cyst wall and oral mucosa or inserting iodoform gauze to keep the cyst cavity open. However, the gauze is easy to fall off or be covered by tissue, which leads to early closure of the window and affects the drainage and decompression effect.

[0009] 2. Inadequate drainage and fixation: Existing drainage materials (such as rubber tubes, plastic tubes, or iodoform gauze) are difficult to accurately position inside the cyst cavity, and are prone to slippage, displacement, or blockage, resulting in poor drainage of pus and even secondary infection.

[0010] 3. Difficulties in patient compliance and postoperative management: Traditional methods require frequent dressing changes and repeated irrigation of the cyst cavity, which increases the complexity of postoperative care and patient discomfort, while also prolonging the healing period.

[0011] 4. Lack of standardized and repeatable positioning and fixation devices: Currently, there are no fixation and drainage devices specifically designed for fenestration surgery of oral and maxillofacial cysts. Clinical practice mainly relies on doctors' experience and manual adjustment, which is highly dependent on operation, lacks precision, and has significant differences in efficacy.

[0012] Therefore, how to provide a fixation and drainage obstruction device for oral and maxillofacial cyst fenestration surgery that can be accurately positioned, stably fixed, and continuously drained, and its usage method are problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0013] In view of this, the present invention provides a fixed drainage obstruction device and its method of use after fenestration of oral and maxillofacial cysts, aiming to solve one of the problems in the above-mentioned background art, which can be accurately positioned, stably fixed, and continuously drained.

[0014] To achieve the above objectives, in one aspect, the present invention provides a fixation and drainage obstruction device and its method of use after fenestration of oral and maxillofacial cysts, comprising: A central drainage channel, with translational chute and limiting mechanism on both sides of the central drainage channel; The translational unfolding body is provided in two symmetrical arrangements. The two translational unfolding bodies are arranged in the central drainage channel and can switch between a closed state and an unfolded state through the translational slide. Two retaining winglets are provided corresponding to the translational unfolding body, and the two retaining winglets are respectively connected to the lower edge of the translational unfolding body.

[0015] An external fixation ring is disposed at one end of the translational unfolding body away from the cyst opening, and the external fixation ring is used for suturing and fixing to the oral mucosa.

[0016] Furthermore, the diameter of the central drainage channel is 2–3 mm, and the outer end of the central drainage channel is provided with a detachable one-way valve, which is used to connect the drainage hose.

[0017] Furthermore, the limiting mechanism is configured as a groove end protrusion structure, which is disposed within the translational groove to prevent the translational unfolding body from over-expanding.

[0018] Furthermore, the surface of the outer fixing ring is provided with stitching holes.

[0019] Furthermore, the retaining wing is provided with a retaining section that extends outward in a slightly arc shape, and the end of the retaining wing is provided with anti-slip texture or micro-protrusion.

[0020] Furthermore, the translation slide is made of polyetheretherketone or medical-grade titanium alloy, and a lubricating coating is provided between the translation slide and the translation unfolding body.

[0021] Furthermore, the translational unfolding body, the holding wing, and the external fixing ring are made of medical-grade flexible material.

[0022] On the other hand, the present invention provides a method for using a fixed drainage obstruction device after fenestration of oral and maxillofacial cysts. Based on the above-described fixed drainage obstruction device after fenestration of oral and maxillofacial cysts, the method specifically includes the following steps: Step 1: Preoperative preparation, establish a bone window according to the routine cyst fenestration procedure, clean the cyst fluid and confirm the integrity of the cyst wall; Step 2: Device implantation. With the device in the closed position, slowly insert it through the cyst opening; Adjust the tail end sliding ring to make the two unfolding bodies slide to the sides and open, with the lower edge clamping the winglets embedded below the capsule wall; Adjust the position of the external fixation ring to align it with the edge of the mucosal incision, and then suture it in place. Step 3: Postoperative maintenance. The drainage channel should be flushed weekly, and the patency of the channel should be checked regularly. If the cyst cavity shrinks, the device can be retracted and removed.

[0023] Furthermore, in step three, the central drainage channel is flushed weekly with an antibacterial flushing solution after surgery.

[0024] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a fixed drainage obstruction device and its usage method after fenestration of oral and maxillofacial cysts, the beneficial effects of which are: 1. Precise positioning and stable fixation effect are remarkable. Traditional iodoform gauze or simple catheters rely on packing or sutures to maintain their position, which is prone to displacement, collapse, or being covered by tissue. This device adopts a translational unfolding double-piece symmetrical structure, which can be accurately positioned at the cyst opening and then automatically unfolded. The retaining wings at the lower edge naturally embed into the inner side of the cyst wall, achieving double fixation of "internal support + outer ring", so that the device remains stable and does not shift during the healing process of the cyst cavity. 2. Smooth drainage significantly reduces the risk of infection. The central drainage channel forms an independent and constant-diameter drainage path, allowing for continuous drainage of the bladder fluid without being affected by bladder collapse or tissue compression; the outer end can be connected to a one-way valve or catheter, which not only prevents backflow of oral fluid but also facilitates rinsing and disinfection; compared with traditional iodoform gauze, the drainage is more continuous and the channel is cleaner, significantly reducing the risk of postoperative infection. 3. Reduce trauma and the need for secondary surgeries The mechanical path of the translational unfolding body is controlled by the limiting mechanism, the unfolding force is balanced and the movement is controllable, and it will not tear the cyst wall or overstretch it; after the operation, there is no need to change dressings frequently or suture again, and the cyst cavity can be kept open for a long time, avoiding secondary trauma and patient pain. 4. Promotes bone regeneration and rapid healing of the cyst cavity The device maintains a low-pressure environment in the cyst cavity through continuous decompression and stable drainage, promoting the regeneration of surrounding bone tissue and new bone deposition, and shortening the cyst shrinkage and healing cycle. 5. Simple operation, improving clinical efficiency The device has a modular structure, and during implantation, it only requires a single insertion and gentle push to unfold and complete the positioning and fixation, without the need for repeated adjustments; it saves time during the operation and reduces the chance of contamination; postoperative maintenance is convenient, and doctors can rinse or replace the valve cap through the external interface, which significantly improves patient compliance.

[0025] 6. Good biocompatibility and adaptability

[0026] The device is made of medical-grade flexible silicone rubber or polyurethane material, which has excellent biocompatibility and elasticity and can adapt to cavities of different shapes and sizes. The flexible structure can automatically adjust its shape to maintain a close fit when the bone cavity shrinks, avoiding local compression or tissue necrosis. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1This is a schematic diagram illustrating the specific use of a fixed drainage and obstruction device after fenestration of oral and maxillofacial cysts provided by the present invention.

[0029] Among them: 1 is the central drainage channel; 2 is the translational unfolding body; 3 is the clamping wing. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] See Figure 1 This invention discloses a fixed drainage obstruction device and its usage method after fenestration surgery for oral and maxillofacial cysts, comprising: The central drainage channel 1 has translational chute and limiting mechanism on both sides; the central drainage channel 1 connects the outside world with the cyst cavity to achieve continuous drainage; the translational chute and limiting mechanism enable the two translational unfolding bodies 2 to slide and unfold smoothly and synchronously, and limit the maximum unfolding distance of the translational unfolding bodies 2. Two translational expansion bodies 2 are symmetrically arranged and are located in the central drainage channel 1. The two translational expansion bodies 2 can switch between the closed state and the expanded state through the translational sliding groove. After being inserted into the cyst opening, the two structures can be translated and expanded outward in the horizontal direction through the translational sliding groove, thereby being stably fixed to the cyst opening and realizing continuous drainage. Two clamping winglets 3 are provided for the translational unfolding body 2, and the two clamping winglets 3 are respectively connected to the lower edge of the translational unfolding body 2.

[0032] An external fixation ring is located at the end of the translational unfolding body 2 away from the sac opening. The external fixation ring is used to suture and fix the device to the oral mucosa to ensure the device is in a stable position.

[0033] In this embodiment, the diameter of the central drainage channel 1 is 2–3 mm, and the outer end of the central drainage channel 1 is provided with a detachable one-way valve. The one-way valve is used to connect the drainage hose, and the drainage hose is used for flushing.

[0034] In this embodiment, the limiting mechanism is set as a groove end protrusion structure, which is set in the translation groove to prevent the translation unfolding body 2 from over-expanding and causing damage to the capsule wall.

[0035] In this embodiment, the surface of the outer fixing ring is provided with a suture hole to facilitate the fixing of the suture thread.

[0036] In this embodiment, the retaining wing 3 is provided with a retaining section that extends slightly outward in an arc shape, and the end of the retaining wing 3 is provided with anti-slip texture or micro-protrusion; by setting the retaining section, it can be embedded into the inner side of the cyst wall to enhance the fit with the cyst wall and play a role in fixing and preventing dislodgement.

[0037] In this embodiment, the translation chute is made of polyetheretherketone or medical titanium alloy to ensure sliding stability and structural strength. A lubricating coating is provided between the translation chute and the translation unfolding body 2 to reduce bacterial adhesion and improve tissue compatibility.

[0038] In this embodiment, the translational unfolding body 2, the holding wing 3, and the external fixing ring are made of medical-grade flexible materials; preferably silicone rubber or thermoplastic polyurethane, which have flexibility and biocompatibility.

[0039] On the other hand, the present invention provides a method for using a fixed drainage obstruction device after fenestration of oral and maxillofacial cysts. Based on the above-mentioned fixed drainage obstruction device after fenestration of oral and maxillofacial cysts, the method specifically includes the following steps: Step 1: Preoperative preparation, establish a bone window according to the routine cyst fenestration procedure, clean the cyst fluid and confirm the integrity of the cyst wall; Step 2: Device implantation. With the device in the closed position, slowly insert it through the cyst opening; Adjust the tail end sliding ring to make the two unfolding bodies slide to the sides and open, and the lower edge clamping wing 3 is embedded in the lower part of the capsule wall; Adjust the position of the external fixation ring to align it with the edge of the mucosal incision, and then suture it in place. Step 3: Postoperative maintenance. The drainage channel should be flushed weekly, and the patency of the channel should be checked regularly. If the cyst cavity shrinks, the device can be retracted and removed.

[0040] In this embodiment, in step three, the central drainage channel 1 is used to rinse the area weekly with antibacterial rinsing solution after surgery.

[0041] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixed drainage obstruction device for postoperative fenestration of oral and maxillofacial cysts, characterized in that, include: A central drainage channel, with translational chute and limiting mechanism on both sides of the central drainage channel; The translational unfolding body is provided in two symmetrical arrangements. The two translational unfolding bodies are arranged in the central drainage channel and can switch between a closed state and an unfolded state through the translational slide. Two retaining winglets are provided corresponding to the translational unfolding body, and the two retaining winglets are respectively connected to the lower edge of the translational unfolding body; An external fixation ring is disposed at the end of the translational unfolding body away from the sac opening, and the external fixation ring is used for suturing and fixing to the oral mucosa; The diameter of the central drainage channel is 2–3 mm, and the outer end of the central drainage channel is provided with a detachable one-way valve, which is used to connect the drainage hose. The retaining wing has a retaining section that extends outward in a slightly arc shape, and the end of the retaining wing has an anti-slip texture or a slight protrusion.

2. The fixed drainage obstruction device for postoperative fenestration of oral and maxillofacial cysts according to claim 1, characterized in that, The limiting mechanism is configured as a convex structure at the end of the slide groove, which is set in the translation slide groove to prevent the translation unfolding body from over-expanding.

3. The fixed drainage obstruction device for postoperative fenestration of oral and maxillofacial cysts according to claim 1, characterized in that, The surface of the external fixing ring is provided with stitching holes.

4. The fixed drainage obstruction device for postoperative fenestration of oral and maxillofacial cysts according to claim 1, characterized in that, The translation slide is made of polyetheretherketone or medical titanium alloy, and a lubricating coating is provided between the translation slide and the translation unfolding body.

5. A fixed drainage obstruction device for postoperative fenestration of oral and maxillofacial cysts according to claim 1, characterized in that, The translational unfolding body, the holding wing, and the external fixing ring are made of medical-grade flexible material.

Images