Retractable biological barrier membrane with retainer and assembly method thereof

Abstract

The invention provides an absorbable biological barrier membrane with a retainer and an assembling method thereof, and the absorbable biological barrier membrane with the retainer comprises a membrane body which is provided with a first side edge; the protective ring is located on the first side edge of the film body and penetrates through the film body in the thickness direction, the radial periphery of the protective ring is tightly combined with the film body, the protective ring is provided with a center hole, and a film nail penetrates through the center hole so that the film body can be fixed to the using position. According to the absorbable biological barrier membrane, the first side edge of the membrane body is provided with the protective ring, the protective ring enables the membrane body to be stressed evenly at the position where the membrane nail penetrates, the membrane body is not prone to being torn at the position where the membrane nail penetrates, and the absorbable biological barrier membrane with the protective ring can be stably arranged at the using position; the protective ring can be fixed by using a screw-in type membrane nail, so that the brain is prevented from being vibrated and damaged by knocking force when the knocking type membrane nail is used for fixing; the protective ring can be fixed on the tongue side through a screw-in type membrane nail, so that the problem that an existing knocking type membrane nail cannot be used on the tongue side is solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an absorbable biological barrier membrane with a retaining ring for use in the field of oral bone grafting and an assembly method thereof. Background Art

[0002] Guided bone regeneration (GBR) is a technology that uses a barrier membrane to block the growth of rapidly proliferating cells into bone defects, thereby creating a stable bone formation space. It has been widely used in the oral field. Through GBR technology, the patient's alveolar bone defect is regenerated into new alveolar bone to restore the normal width, height, and physiological shape of the alveolar bone, and then oral implants can be placed on the restored alveolar bone.

[0003] For a successful GBR procedure, the barrier membrane covering the implanted bone material must be stably fixed on the alveolar bone without displacement, and must have a certain tension (strength) to shape the alveolar bone.

[0004] When applying guided bone regeneration technology, the barrier membrane should be fixed to the buccal and lingual sides of the alveolar bone with membrane pins. At the same time, a certain tension should be formed to shape the alveolar bone.

[0005] In order to meet the above GBR requirements and to reduce trauma and operation time, absorbable biological barrier membranes are currently used clinically (no need to be removed after surgery), and percussion membrane pins are used to fix the barrier membrane to the alveolar bone on the lip and buccal sides of the mouth (the current absorbable biological barrier membrane cannot use screw-in membrane pins because the barrier membrane will rotate with the screw-in membrane pins). The barrier membrane on the lingual side cannot be fixed to the alveolar bone using percussion membrane pins. When percussion membrane pins are used, the force of the percussion will cause concussion damage to the brain. This percussion shock will cause emergency reactions in patients (rapid increase in blood pressure, short-term amnesia, strong contraction of blood vessels, increased heart rate, etc., causing life-threatening conditions in some patients). The above factors have led to the low success rate of osteogenesis in clinical GBR surgery and the low predictability. This has always been an unresolved problem in the field of oral bone grafting. Summary of the invention

[0006] The purpose of the present application is to provide an absorbable biological barrier membrane with a retaining ring and an assembly method thereof, wherein the absorbable biological barrier membrane with a retaining ring can be stably placed at a bone defect, is not easily damaged during use, and is thus beneficial to bone growth. Moreover, when fixed in use, there is no external force causing concussion damage to the brain.

[0007] To achieve the above objectives, this application provides the following technical solutions:

[0008] The present application provides an absorbable biological barrier membrane with a retaining ring, the absorbable biological barrier membrane with a retaining ring comprising:

[0009] a membrane body having a first side;

[0010] The retaining ring is located at the first side of the membrane body and penetrates through the thickness direction of the membrane body. The radial circumference of the retaining ring is tightly combined with the membrane body. The retaining ring has a center hole for the membrane pin to pass through to fix the membrane body in the use position.

[0011] In one embodiment, the absorbable bio-barrier membrane with a retainer further comprises a membrane nail, and the membrane nail is used to pass through the retainer to fix the membrane body at a use position.

[0012] In one embodiment, the nail body of the film nail has threads.

[0013] In one embodiment, the membrane body further has a second side edge opposite to the first side edge, and the second side edge is also provided with a guard ring.

[0014] In one embodiment, the retaining ring is roughly I-shaped when viewed from the side, and includes a top ring, a bottom ring and a hollow tube connecting the top ring and the bottom ring, the inner hole of the hollow tube is the center hole of the retaining ring, the radial circumference of the hollow tube is tightly combined with the membrane body, and the top ring and the bottom ring are respectively clamped on two side surfaces of the membrane body; the top ring, the bottom ring and the hollow tube are an integrated structure.

[0015] In one embodiment, the retaining ring is roughly T-shaped when viewed from the side before assembly, and includes the top ring and the hollow tube, and the bottom ring is formed by the end of the hollow tube being squeezed, cracked and deformed by an assembly tool.

[0016] In one embodiment, the outer circumference of the bottom ring is serrated.

[0017] In one embodiment, the assembly tool includes a pin and an extrusion object, the pin having a connected body and a head, the body having a diameter greater than that of the hollow tube, the head being conical with a diameter gradually decreasing so as to partially extend into the hollow tube and partially abut against the end of the hollow tube, the extrusion object being used to extrude the top ring to deform the end of the hollow tube, the head also having a shoulder extending circumferentially at the position where it abuts against the end of the hollow tube, the shoulder being used to cooperate with the top ring to flatten the end of the hollow tube after deformation to form the bottom ring.

[0018] In one embodiment, the retaining ring is made of medical metal.

[0019] The present application also provides a method for assembling the absorbable biological barrier membrane with a retaining ring as described above,

[0020] Before assembly, the retaining ring is generally T-shaped in a front view, including a top ring and a hollow tube. The end of the hollow tube is deformed by extrusion and cracking with an assembly tool to form a bottom ring;

[0021] The assembly tool includes a thimble and an extruding object. The thimble has a connected main body and a head. The diameter of the main body is larger than the diameter of the hollow tube. The head is conical with a gradually decreasing diameter so as to partially extend into the hollow tube and partially abut against the end of the hollow tube. The extruding object is used to extrude the top ring to deform the end of the hollow tube. There is also a shoulder extending circumferentially at the position where the head abuts against the end of the hollow tube. The shoulder is used to cooperate with the top ring to flatten the end of the hollow tube after deformation to form the bottom ring;

[0022] The assembly method includes: punching a hole at the position on the membrane body for assembling the retaining ring to form a membrane hole; then passing the hollow tube of the retaining ring through the membrane hole and abutting against the head of the thimble, and the entire circumferential area around the hollow tube is tightly combined with the membrane body; then using the extruding object to extrude the top ring of the retaining ring to cause the end of the hollow tube to deform and crack, and the shoulder cooperates with the top ring to flatten the end of the hollow tube after deformation to form a bottom ring, and the top ring and the bottom ring are respectively clamped on both sides of the membrane body, and the retaining ring is generally I-shaped in a front view; the top ring, the bottom ring, and the hollow tube are of an integral structure.

[0023] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0024] For the absorbable bio-barrier membrane with a retaining ring and its assembly method of the present application, a retaining ring is provided on the first side edge of the membrane body. The entire circumferential area around the retaining ring is in a tightly combined state with the membrane body. The central hole of the retaining ring is for a membrane nail to pass through to fix the membrane body at the use position. The force on the membrane body at the position where the membrane nail passes through is relatively balanced, and it is not easily torn at the position where the membrane nail passes through. The absorbable bio-barrier membrane with a retaining ring can be stably placed at the use position.

[0025] Moreover, the provision of the retaining ring on the membrane body also facilitates the installation and fixation of the membrane nail. A membrane nail with a thread can be used, and the membrane nail and the membrane body are fixed by screwing, which will not cause discomfort to the patient.

[0026] Moreover, with the membrane nail having a thread, the operation on the lingual side is also feasible. Retaining rings are provided on both side edges of the membrane body and fixed by membrane nails with threads, further improving the stability of the absorbable bio-barrier membrane with a retaining ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 The front schematic view of an absorbable bio-barrier membrane with a retaining ring provided by the first embodiment of the present application;

[0029] Figure 2 For Figure 1 The back schematic view of the shown absorbable bio-barrier membrane with a retaining ring;

[0030] Figure 3 The structural schematic view of the retaining ring of the present application before assembly;

[0031] Figure 4 The structural schematic view of the membrane nail of the present application;

[0032] Figure 5 The structural schematic view of the ejector pin in the assembly tool of the present application. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. And in the following embodiments, each embodiment is described with emphasis. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0034] Please refer to Figure 1 As shown, the first embodiment of the present application provides an absorbable bio-barrier membrane with a retaining ring, which may include:

[0035] A membrane body 1, the membrane body 1 having a first side 11;

[0036] A retaining ring 2, the retaining ring 2 being located on the first side 11 of the membrane body 1 and penetrating through the thickness direction of the membrane body 1. The entire circumferential direction of the radial direction of the retaining ring 2 is in a tightly combined state with the membrane body 1. The retaining ring 2 has a central hole 20 for a membrane nail 3 (please refer to Figure 4 as shown) to pass through to fix the membrane body 1 at the use position.

[0037] On the outside of the membrane body 1, which is the bone graft material used to cover the alveolar bone defect site, a stable spatial environment is created for the bone defect to facilitate the generation of new bone. Essentially, the membrane body 1 can have no specific defined shape and can be cut into a suitable shape according to the specific application scenario. For the convenience of understanding in this application, it is shown as a square in Figure 1 and the first side 11 is schematically shown. In fact, the first side 11 can be located at any suitable position on the membrane body 1. The membrane body 1 can be an absorbable membrane derived from biological raw materials or an artificially synthesized absorbable membrane, and its material can be collagen from animal sources, such as bovine and porcine pericardium, subcutaneous connective tissue, SIS-ECM acellular matrix, and biomaterials. During the process of the implanted bone material guiding the generation of new bone, the membrane body 1 is gradually absorbed by the human body and does not need to be removed later.

[0038] The material of the retaining ring 2 can be medical metal, including absorbable medical alloy series or non-absorbable medical alloy. In one embodiment, the material of the retaining ring is a medical magnesium alloy series, a medical zinc alloy series, including but not limited to: Mg-Zn series magnesium alloy, Mg-Ca series magnesium alloy, Mg-Sr series magnesium alloy, Mg-Zr magnesium alloy, Mg-Mn series magnesium alloy, Mg-Y rare metal series magnesium alloy, etc. These materials can also be gradually absorbed by the human body during use, so there is no need to remove them later, and the released metal ions are helpful for the growth of bone cells. Of course, other materials such as medical stainless steel and medical titanium alloy can also be used.

[0039] The entire circumferential periphery of the retaining ring 2 is in a tightly bonded state with the membrane body 1, that is, the entire circumferential periphery of the retaining ring 2 is in contact with the membrane body 1. Therefore, the contact between the membrane body 1 and the retaining ring 2 can be regarded as surface contact (or line contact, multiple points forming a line). When the membrane body 1 is affected by external forces (such as soft tissue contracture and traction, muscle movement traction during chewing and speaking) and may move relative to the retaining ring 2 (the retaining ring 2 is fixed via the membrane nail 3, which will be described in detail later), the external forces acting on the membrane body 1 will be conducted, transferred, and dispersed among multiple contact sites between the membrane body 1 and the retaining ring 2. In this way, the force on the membrane body 1 at the location where the membrane nail 3 passes through will be more balanced and reduced, thereby reducing the risk of the membrane body 1 being torn at the location where the membrane nail 3 passes through. If there is no retaining ring 2 and the membrane nail 3 directly passes through the membrane body 1 for fixation, since the radial dimension of the membrane nail 3 is small, the contact with the membrane body 1 can be regarded as point contact. When the membrane body 1 is affected by external forces and may move relative to the retaining ring 2, the external forces acting on the membrane body 1 will be conducted and transferred to a single contact site between the membrane body 1 and the retaining ring 2. The force on the membrane body 1 at the location where the membrane nail 3 passes through is relatively concentrated, making the membrane body 1 prone to tearing at the location where the membrane nail 3 passes through, thus losing the barrier function and causing the membrane body 1 to move. In this way, the membrane body 1 cannot play a barrier and spatial stability role for the bone graft material below it, resulting in the failure of new bone regeneration.

[0040] Therefore, for the absorbable bio-barrier membrane with a retaining ring in the present application, the first side 11 of the membrane body 1 is provided with a retaining ring 2. The entire circumferential periphery of the retaining ring 2 is in a tightly bonded state with the membrane body 1. While the central hole 20 of the retaining ring 2 allows the membrane nail 3 to pass through to fix the membrane body 1 to the alveolar bone, the force on the membrane body 1 at the location of the retaining ring 2 (also the location where the membrane nail 3 passes through) is relatively dispersed and balanced, and the membrane body 1 is not easily torn at the location where the membrane nail 3 passes through. The absorbable bio-barrier membrane with a retaining ring can be stably placed on the alveolar bone and perform the barrier function.

[0041] Moreover, the provision of the retaining ring 2 on the membrane body 1 also facilitates the installation and fixation of the membrane nail 3. Please refer to Figure 4 As shown, in one embodiment, the absorbable bio-barrier membrane with a retaining ring further includes a membrane nail 3, and the membrane nail 3 is used to pass through the retaining ring 2 to fix the membrane body 1 to the use position.

[0042] The membrane nail 3 of the present application can be fixed to the alveolar bone by means of tapping to fix the membrane body 1, and such a membrane nail 3 can be called a tapping type membrane nail. Since after the absorbable biological barrier membrane with a retaining ring is placed on the alveolar bone, the two side edges of the membrane body 1 are respectively located on the two side edges of the alveolar bone (the middle part of the membrane body 1 directly covers the bone growth material filled in the bone defect of the alveolar bone), which are generally called the buccal side and the lingual side respectively. Obviously, on the buccal side, the membrane nail 3 can be fixed to the alveolar bone by means of tapping or the like to fix the membrane body 1, while on the lingual side, such an operation is not convenient, but the membrane body 1 can be clamped between the alveolar bone and the nearby tissue. Therefore, only a retaining ring 2 needs to be provided on the first side edge 11 of the membrane body 1, and when the absorbable biological barrier membrane with the retaining ring is used, the first side edge 11 is located on the buccal side of the alveolar bone. Moreover, the number of the retaining rings 2 provided on the first side edge 11 of the membrane body 1 is generally at least two, and can be adaptively selected according to the actual situation. The distance between the retaining ring 2 and the edge of the first side edge 11 of the membrane body 1 can be approximately between 1.5 and 2.0 mm.

[0043] The membrane nail 3 of the present application can also be fixed to the alveolar bone by means of screw rotation to fix the membrane body 1. Such a membrane nail 3 can be called a screw-in membrane nail. In one embodiment, the nail body of the membrane nail 3 has threads (not shown), and preferably, they are self-tapping threads. In this way, a ratchet screwdriver or other similar tool can be used to tighten the membrane nail 3. Fixing the membrane nail 3 to the alveolar bone by the aforementioned knocking method is likely to cause discomfort to the patient because knocking on the alveolar bone can easily cause concussion damage to the brain, easily trigger the patient's emergency response (such as a sharp rise in blood pressure, a sharp contraction of blood vessels, an accelerated heartbeat, etc.), resulting in a life-threatening situation for some patients. Moreover, the knocking method is also inconvenient for the operation on the lingual side. The present application uses a membrane nail 3 with threads and fixes the membrane nail 3 and the membrane body 1 by means of screw rotation, which will not cause discomfort to the patient. Moreover, the operation on the lingual side is also feasible. Therefore, in one embodiment, the membrane body 1 further has a second side 12 opposite to the first side 11, and a retaining ring 2 is also provided on the second side 12. When the absorbable biological barrier membrane with a retaining ring is used, the second side 12 is located on the lingual side of the alveolar bone. For the membrane nail 3 with threads, a screw is rotated through the retaining ring 2 to fix the second side 12 of the membrane body 1 to the lingual side of the alveolar bone. Both sides of the membrane body 1 are fixed by the membrane nails 3, further improving the stability of the absorbable biological barrier membrane with a retaining ring. Moreover, for the absorbable biological barrier membrane with a retaining ring in the present application, a retaining ring 2 is provided on the membrane body 1, and a screw-in membrane nail passes through the retaining ring 2 to fix the membrane body 1. The screw-in membrane nail has no direct contact with the membrane body 1, will not affect the membrane body 1, has a relatively large retention force, and is not easily detached. If there is no retaining ring 2 and the screw-in membrane nail directly passes through the membrane body 1 for fixation, the screw-in membrane nail is in direct contact with the membrane body 1. During the rotation of the screw-in membrane nail, it will drive the membrane body 1 to rotate together, thus affecting the integrity, usability or tension state of the membrane body 1. In severe cases, the membrane body 1 may be torn, and the membrane body 1 may also, conversely, affect the stability of the fixation of the screw-in membrane nail.

[0044] The shape and size of the retaining ring 2 are not particularly limited. Please refer to Figure 1 , Figure 2 As shown, in one embodiment, the retaining ring 2 is generally I-shaped in side view, including a top ring 21, a bottom ring 22, and a hollow tube 23 connecting the top ring 21 and the bottom ring 22. The inner hole of the hollow tube 23 is the central hole 20 of the retaining ring 2. The entire circumferential direction of the radial periphery of the hollow tube 23 is in a tightly combined state with the membrane body 1, and the top ring 21 and the bottom ring 22 are respectively clamped on both sides of the membrane body 1.

[0045] In Figure 2In the illustrated embodiment, the top ring 21, the bottom ring 22, and the hollow tube 23 are all circular. However, according to different actual application scenarios, they can also be other shapes, such as hexagonal, radial, etc. And their respective diameters (inner diameter, outer diameter) and thicknesses can also be set adaptively according to different actual application scenarios. The top ring 21 and the bottom ring 22 are respectively clamped on both sides of the membrane body 1, and are also in a clamped state. The top ring 21, the bottom ring 22 and the membrane body 1 are also in surface contact. The fixing stability between the retaining ring 2 and the membrane body 1 is better, and further makes the force on the membrane body 1 more balanced, reducing the risk of being torn.

[0046] The top ring 21, the bottom ring 22, and the hollow tube 23 can all be in a discrete structure or part of them can be in an integral structure and part in a discrete structure, and finally assembled together onto the membrane body 1. In one embodiment, the top ring 21, the bottom ring 22, and the hollow tube 23 are in an integral structure, with better stability.

[0047] And as mentioned before, the retaining ring 2 needs to pass through the membrane body 1. Please refer to Figure 3 As shown, in one embodiment, the retaining ring 2 is generally T-shaped in a front view before assembly, including the top ring 21 and the hollow tube 23. The bottom ring 22 is formed by the end of the hollow tube 23 being extruded, cracked, and deformed by an assembly tool 4 (please refer to Figure 5 shown, to be described in detail later). In this way, the hollow tube 23 can pass through the membrane body 1, and is tightly combined with the membrane body 1 in a circumferential circle around the radial direction. The end is deformed and cracked after being extruded by the assembly tool 4, thereby forming the bottom ring 22. And the bottom ring 22 and the top ring 21 jointly clamp tightly on both sides of the membrane body 1, thereby fixing the retaining ring 2 on the membrane body 1.

[0048] Therefore, the outer periphery of the bottom ring 22 is generally in an irregular shape (not shown). In one embodiment, the outer periphery of the bottom ring 22 is serrated or other similar shapes. And the inner periphery of the bottom ring 22, the inner and outer peripheries of the top ring 21, and the inner and outer peripheries of the hollow tube 23 can be in a regular circular shape as described before. Of course, it is not limited to a circular shape and can be other adaptable optional shapes.

[0049] Please refer to Figure 5As shown, in one embodiment, the assembly tool 4 includes a thimble 41 and an extruding object (not shown). The thimble 41 has a connected main body 411 and a head 412. The diameter of the main body 411 is greater than the diameter of the hollow tube 23. The head 412 is conical with a gradually decreasing diameter so as to partially extend into the hollow tube 23 and partially abut against the end of the hollow tube 23. The extruding object is used to extrude the top ring 21 to deform the end of the hollow tube 23. At the position where the head 412 abuts against the end of the hollow tube 23, there is also a shoulder 413 extending circumferentially. The shoulder 413 is used to cooperate with the top ring 21 to flatten the end of the hollow tube 23 after deformation to form the bottom ring 22. Generally, the diameter of the main body 411 is slightly larger than the diameter of the hollow tube 23. The main body 411 is connected to the head 412 with a gradually decreasing diameter, so that the head 412 can partially extend into the hollow tube 23 and partially abut against the end of the hollow tube 23. At this time, the top ring 21 is extruded with an extruding object, and the extruding object can be a hammer or a similar tool. The end of the hollow tube 23 is extruded, cracked, deformed and shortened. At the same time, the shoulder 413 cooperates with the top ring 21 to flatten the end of the hollow tube 23 after deformation to form the bottom ring 22, and the top ring 21 and the bottom ring 22 jointly clamp the membrane body 1.

[0050] For the above assembly, it can be pre-assembled in the factory and the doctor can use it directly after getting it. However, at this time, the position of the retaining ring 2 on the membrane body 1 is already fixed and cannot be adjusted anymore; it can also not be pre-assembled. The membrane body 1 and the retaining ring 2 are two separate structures, and the doctor can assemble them before use. At this time, the doctor can adaptively select the size of the membrane body 1 and the position of the retaining ring 2 on the membrane body 1 according to the actual situation of the bone defect of the patient.

[0051] The second embodiment of the present application provides an assembly method of the absorbable bio-barrier membrane with a retaining ring as described above, wherein,

[0052] Before assembly, the retaining ring 2 is generally T-shaped in a front view and includes a top ring 21 and a hollow tube 23. The end of the hollow tube 23 is extruded, cracked and deformed by the assembly tool 4 to form a bottom ring 22;

[0053] The assembly tool 4 includes a thimble 41 and an extruding object (not shown). The thimble 41 has a connected main body 411 and a head 412. The diameter of the main body 411 is greater than the diameter of the hollow tube 23. The head 412 is conical with a gradually decreasing diameter so as to partially extend into the hollow tube 23 and partially abut against the end of the hollow tube 23. The extruding object is used to extrude the top ring 21 to deform the end of the hollow tube 23. At the position where the head 412 abuts against the end of the hollow tube 23, there is also a shoulder 413 extending circumferentially. The shoulder 413 is used to cooperate with the top ring 21 to flatten the end of the hollow tube 23 after deformation to form the bottom ring 22;

[0054] The assembling method includes: punching holes at positions on the membrane body 1 for assembling the retaining ring 2 to form membrane holes (not shown); then passing the hollow tube 23 of the retaining ring 2 through the membrane holes and abutting against the head 412 of the thimble 41 (the thimble 41 can be pre-fixed to a fixing device in advance), and the entire circumference around the hollow tube 23 is tightly combined with the membrane body 1; then using the extruding object to extrude the top ring 21 of the retaining ring 2 to cause the end of the hollow tube 23 to deform and crack, and the shoulder 413 cooperates with the top ring 21 to flatten the end of the hollow tube 23 after deformation to form the bottom ring 22, and the top ring 21 and the bottom ring 22 are respectively clamped on both sides of the membrane body 1, and the retaining ring 2 is generally in the shape of an I in side view; the top ring 21, the bottom ring 22, and the hollow tube 23 are of an integral structure.

[0055] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0056] In the absorbable biological barrier membrane with a retaining ring and its assembling method of the present application, a retaining ring 2 is provided on the first side edge 11 of the membrane body 1, and the entire circumference around the retaining ring 2 is tightly combined with the membrane body 1. The central hole 20 of the retaining ring 2 is for the membrane nail 3 to pass through to fix the membrane body 1 at the use position. The force on the membrane body 1 where the membrane nail 3 passes through is relatively balanced, and it is not easy to be torn at the position where the membrane nail 3 passes through. The absorbable biological barrier membrane with a retaining ring can be stably placed at the use position.

[0057] Moreover, the setting of the retaining ring 2 on the membrane body 1 also facilitates the installation and fixation of the membrane nail 3. A membrane nail 3 with threads can be used, and the membrane nail 3 and the membrane body 1 are fixed by screwing, which will not cause discomfort to the patient.

[0058] Moreover, with the membrane nail 3 having threads, the operation on the lingual side is also feasible. Retaining rings 2 are provided on both side edges of the membrane body 1 and fixed by membrane nails 3 with threads, further improving the stability of the absorbable biological barrier membrane with a retaining ring.

[0059] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. In addition, specific examples are used in the specification to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application, and the content of this specification should not be construed as a limitation to the present application.

Claims

1. An absorbable biological barrier membrane with a retaining ring, characterized in that: The absorbable biological barrier membrane with a retainer comprises: a membrane body having a first side; The retaining ring is located at the first side of the membrane body and penetrates through the thickness direction of the membrane body. The radial circumference of the retaining ring is tightly combined with the membrane body. The retaining ring has a central hole for the membrane pin to pass through to fix the membrane body in the use position.

2. The absorbable biological barrier membrane with a retainer according to claim 1, characterized in that: The absorbable biological barrier membrane with a retainer further comprises a membrane nail, and the membrane nail is used to pass through the retainer to fix the membrane body at a use position.

3. The absorbable biological barrier membrane with a retainer according to claim 2, characterized in that: The nail body of the membrane nail has a thread.

4. The absorbable biological barrier membrane with a retainer according to claim 3, characterized in that: The membrane body also has a second side edge opposite to the first side edge, and the second side edge is also provided with a guard ring.

5. The absorbable biological barrier membrane with a retainer according to claim 1, characterized in that: The retaining ring is roughly I-shaped when viewed from the side, and includes a top ring, a bottom ring and a hollow tube connecting the top ring and the bottom ring. The inner hole of the hollow tube is the center hole of the retaining ring. The radial circumference of the hollow tube is tightly combined with the membrane body. The top ring and the bottom ring are respectively clamped on two side surfaces of the membrane body; the top ring, the bottom ring and the hollow tube are an integrated structure.

6. The absorbable biological barrier membrane with a retainer according to claim 5, characterized in that: The retaining ring is roughly T-shaped when viewed from the side before assembly, and includes the top ring and the hollow tube. The bottom ring is formed by the end of the hollow tube being squeezed, cracked and deformed by an assembly tool.

7. The absorbable biological barrier membrane with a retainer according to claim 6, characterized in that: The outer periphery of the bottom ring is in a sawtooth shape.

8. The absorbable biological barrier membrane with a retainer according to claim 6, characterized in that: The assembly tool includes a pin and an extrusion object. The pin has a main body and a head connected to each other. The diameter of the main body is larger than the diameter of the hollow tube. The head is conical and its diameter gradually decreases so that it can partially extend into the hollow tube and partially abut against the end of the hollow tube. The extrusion object is used to squeeze the top ring to squeeze the end of the hollow tube to deform. The position where the head abuts against the end of the hollow tube also has a shoulder extending circumferentially. The shoulder is used to cooperate with the top ring to flatten the end of the hollow tube after deformation to form the bottom ring.

9. The absorbable biological barrier membrane with a retainer according to claim 1, characterized in that: The material of the retaining ring is medical metal.

10. A method for assembling the absorbable biological barrier membrane with a retainer as claimed in claim 1, characterized in that: The retaining ring is roughly T-shaped when viewed from the side before assembly, and includes a top ring and a hollow tube, wherein the end of the hollow tube is squeezed, cracked and deformed by an assembly tool to form a bottom ring; The assembly tool comprises an ejector pin and an extrusion object, wherein the ejector pin has a main body and a head connected to each other, the diameter of the main body is larger than the diameter of the hollow tube, the head is tapered, and the diameter gradually decreases, so that it can partially extend into the hollow tube and partially abut against the end of the hollow tube, the extrusion object is used to squeeze the top ring to squeeze the end of the hollow tube to deform, and the position where the head abuts against the end of the hollow tube also has a shoulder extending in the circumferential direction, and the shoulder is used to cooperate with the top ring to flatten the end of the hollow tube after deformation to form the bottom ring; The assembly method comprises: punching a hole at a position on the membrane body where the retaining ring is to be assembled to form a membrane hole; then passing the hollow tube of the retaining ring through the membrane hole and abutting against the head of the ejector pin, wherein the radial circumference of the hollow tube is tightly combined with the membrane body; then using the extrusion to extrude the top ring of the retaining ring to deform and crack the end of the hollow tube, wherein the shoulder cooperates with the top ring to flatten the end of the hollow tube after deformation to form a bottom ring, and the top ring and the bottom ring are respectively clamped on two side surfaces of the membrane body, and the retaining ring is roughly I-shaped when viewed from the side; the top ring, the bottom ring and the hollow tube are an integrated structure.

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