A repair system and instrument set for vertical bone augmentation

Abstract

The present invention discloses a repair system and an instrument set for vertical bone augmentation, wherein the repair system comprises: a plurality of pier-type stents, bone powder and periosteum; the pier-type stent comprises: a porous stent and a pillar connected to the bottom of the porous stent; in a use state, the pillar is fixed in the jawbone; the bone powder is arranged around the pier-type stent or between the pier-type stents, and the periosteum covers the surface of the pier-type stent and the bone powder. The instrument set comprises a pier-type stent and a matching tool, and the matching tool is used to prepare an implantation socket matching the pillar. The pier-type stent can confine the bone powder to the surgical area to avoid displacement and collapse of the bone powder. Stents of different sizes can be used in combination, and can be adapted to bone defect cases of different length ranges simply by adjusting the number and spacing of the pier-type stents used.

Description

Technical Field

[0001] The invention relates to the technical field of oral medical instruments, and in particular to a repair system and an instrument set for vertical bone augmentation. Background Art

[0002] With the development of social economy and the change of people's oral concepts, oral implant restoration technology has been rapidly popularized in clinical practice. It is used to treat edentulous and missing teeth caused by trauma, caries, periodontitis, etc., and can better restore the chewing function of the missing teeth area. The bone mass in the implant area is one of the key factors affecting the success or failure of implant surgery. At present, guided bone regeneration (GBR) technology is widely used in bone augmentation surgery. It can achieve good treatment effects for cases where implant restoration is not possible due to insufficient bone mass caused by periodontitis, alveolar bone resorption and other factors. The principle is that after the bone graft is implanted in the bone defect area, the surface is covered with a biological barrier membrane, thereby blocking the growth of epithelial cells and fibroblasts into the defect area, and providing a good environment for the growth of bone tissue.

[0003] In order to achieve better bone regeneration effects, most current inventions focus on optimizing the osteoinductive properties of bone powder materials. However, the bone powder covered under the membrane cannot obtain good retention ability and is easily displaced and collapsed under chewing force or external force, resulting in insufficient recovery of bone height. Block scaffold materials with specific sizes are difficult to meet personalized needs, which is not conducive to mass production and productization. For this reason, titanium mesh or tent nails are often used to fix bone powder in clinical practice to achieve a stable bone augmentation effect. However, due to the inability of the corresponding support materials to degrade and the existence of stress accumulation, soft tissue wound rupture, titanium mesh exposure, secondary bone absorption and other complications are often caused. In addition, metal support materials have a "stress shielding" phenomenon, which is not conducive to new bone growth. After achieving bone regeneration, a second operation is required to remove the titanium mesh or tent nails, which increases surgical trauma. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a repair system and instrument kit for vertical bone augmentation. By combining a pier-type degradable scaffold with the traditional "bone powder + periosteum" GBR technology, the bone regeneration space can be supported to prevent the displacement and collapse of bone powder resulting in insufficient recovery of bone height; in addition, by using a combination of multiple pier-type scaffolds, different bone defect ranges can be easily and quickly adapted.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a repair system for vertical bone augmentation, which comprises: a plurality of pier-type stents, bone powder and periosteum; the pier-type stent comprises: a porous stent and a pillar connected to the bottom of the porous stent; in a state of use, the pillar is fixed in the jawbone; the bone powder is arranged around the pier-type stent or between the pier-type stents, and the periosteum covers the surface of the pier-type stent and the bone powder.

[0006] Preferably, the pier-type support comprises: 2 cylindrical pillars.

[0007] Preferably, the porous support is square.

[0008] Preferably, the length of the pillar is 3-8 mm, and the outer diameter is 1 mm-1.2 mm.

[0009] Preferably, the repair system comprises pier-type brackets of different sizes, so that the repair system can be adapted to different bone defect cases by adopting pier-type brackets of different sizes and adjusting the number and spacing of the pier-type brackets.

[0010] Preferably, the pore size of the porous scaffold is 200-500 μm; the length of the porous scaffold from buccal to lingual direction of the alveolar bone is 5 mm-10 mm, the height is 3 mm-10 mm, and the thickness is 2 mm-5 mm.

[0011] Preferably, the pier-type support is made of degradable materials.

[0012] The present invention also provides an instrument kit for vertical bone augmentation, which comprises: the pier-type bracket used in the above-mentioned repair system for vertical bone augmentation, and matching tools; the pier-type bracket comprises: two parallel pillars; the matching tools are used to prepare an implantation socket matching the pillars; the matching tools comprise: a guide plate, a positioning drill, a pilot drill, a reaming drill, and a retaining rod; the guide plate is provided with two guide plate holes matching the outer diameters of the pillars, the guide plate holes are used to position the pillars inserted into the bone defect area; the positioning drill is used to drill through the cortical bone at the position of the guide plate holes, the pilot drill and the reaming drill are used to obtain an implantation socket with a diameter and length substantially the same as those of the pillars at the position of the guide plate holes; the retaining rod is used to be inserted into the prepared first implantation socket to fix the guide plate and position the second implantation socket.

[0013] Preferably, the diameter of the guide plate hole, the diameter of the reamer, the diameter of the retaining rod and the diameter of the support column are the same.

[0014] Preferably, the positioning drill is a positioning ball drill; the drill bit diameter of the positioning ball drill is 0.6 mm, the diameter of the pilot drill is 0.8 mm, and the diameter of the reaming drill is 1.2 mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) Compared with the traditional "bone powder + periosteum" GBR surgery, the pier-type scaffold of the present invention can confine the bone powder to the surgical area, avoid bone powder displacement and collapse, and more stably restore bone regeneration height and bone mass;

[0017] (2) Compared with bone powder implanted by covering titanium mesh or tent pegs, the pier-type stent of the present invention can reduce the "stress shielding" phenomenon;

[0018] (3) The pier-type stent of the present invention is made of degradable materials and does not require secondary surgery for removal, thus avoiding secondary surgical trauma;

[0019] (4) The pier-type scaffold of the present invention has a porous structure and can be used to load cells or induction factors to improve the bone regeneration effect;

[0020] (5) The bridge-type stent designed by the present invention has multiple models to be suitable for alveolar bones of different widths and different lifting heights, and can be adapted to bone defect cases of different length ranges simply by adjusting the number and spacing of the bridge-type stents used;

[0021] (6) The vertical bone augmentation instrument kit designed by the present invention is also equipped with a corresponding guide plate and drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the use state of the repair system for vertical bone augmentation of the present invention when it is not covered with periosteum.

[0023] Figure 2 This is a schematic diagram of the use status of the repair system for vertical bone augmentation provided by the present invention.

[0024] Figure 3 This is a schematic diagram of the upright position of the pier-type support.

[0025] Figure 4 This is an inverted schematic diagram of a pier-type support.

[0026] Figure 5 It is a schematic diagram of the accessories included in the supporting tools in the instrument set for vertical bone augmentation of the present invention.

[0027] Figure 6 It is a schematic diagram of the steps of using the instrument kit for vertical bone augmentation of the present invention. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 and Figure 2 The working principle diagram of the repair system for vertical bone augmentation provided by the present invention. Figure 1 and Figure 2 As shown, the repair system for vertical bone augmentation provided by the present invention comprises: a plurality of pier-type stents 1, bone powder 2 and periosteum 3. Figure 3 It is a schematic diagram of the upright position of the pier type support 1. Figure 4 FIG. 1 is an inverted schematic diagram of the pier-type support 1. Figure 3 and Figure 4 As shown, the pier-type stent 1 comprises: a porous stent 11 and two parallel pillars 12. The pillars 12 are fixed in the jawbone. Figure 1 and Figure 2 The bone powder 2 is arranged around the pier-type stent 1 or between the pier-type stents 1. The periosteum 3 covers the surface of the pier-type stent 1 and the bone powder 2.

[0030] The pillar 12 is similar to a bridge pier and can play a supporting role, so that the porous scaffold can be directly fixed in the alveolar bone. Since the present invention adds the use of a bridge pier-type scaffold, the repair system is different from the traditional "bone powder + periosteum" GBR technique, and can obtain the fixation of the implanted bone powder, achieving a more stable bone regeneration effect.

[0031] Figure 3 and Figure 4 The pillars 12 in the illustrated embodiment are cylindrical, and the square porous support 11 is in a grid shape with interconnected holes.

[0032] In some embodiments, the length of the pillar 12 is 3-8 mm, and the diameter is 1 mm-1.2 mm. The pore size of the porous support 11 is 200-500 μm. The length of the porous support 11 in the buccal and lingual direction of the alveolar bone is 5 mm-10 mm, the height is 3 mm-10 mm, and the thickness is 2 mm-5 mm.

[0033] The pier-type bracket 1 can be used individually or in combination. Several specifications of the pier-type bracket 1 can be provided to be suitable for alveolar bones with a width in the range of 3-10 mm and a lifting height in the range of 3-10 mm. In addition, the number and spacing of the pier-type brackets 1 used can be adjusted to adapt to bone defect cases with different length ranges.

[0034] The pier-type stent 1 is preferably made of degradable materials, such as calcium / phosphorus inorganic materials, organic polymer materials, natural biological materials, magnesium alloys and other degradable metal materials. The stent has degradable properties, which can avoid secondary surgery for removal.

[0035] The present invention provides an instrument kit for vertical bone augmentation, which comprises: the above-mentioned pier-type bracket and a matching tool. The matching tool is used to prepare an implantation socket matching the pillar. The pier-type bracket is fixed to the defect area by inserting the pillar of the pier-type bracket into the alveolar bone screw hole prepared by the matching tool. The pier-type bracket in the instrument kit is provided with two pillars arranged in parallel.

[0036] like Figure 5 As shown, the supporting tools include: a guide plate 41, a positioning drill 5, a pilot drill 6, a reaming drill 7, and a retaining rod 8. In order to prepare an implantation socket corresponding to the pillar in the bone augmentation area, the present invention designs a positioning guide plate 41 with two guide plate holes 42 with the same diameter as the pillar, and the guide plate holes 42 can be used to position the pillar inserted into the bone defect area. The positioning drill 5 is used to drill through the cortical bone at the position of the guide plate hole 42, and the pilot drill 6 and the reaming drill 7 are used to obtain an implantation socket with a diameter and length substantially the same as the pillar at the position of the guide plate hole 42; the retaining rod 8 is used to be inserted into the prepared first implantation socket to fix the guide plate 41 to position the second implantation socket.

[0037] In some embodiments, the guide plate 41 is made of materials such as titanium metal and PEEK.

[0038] The diameter of the guide plate hole 42, the diameter of the reamer 7, and the diameter of the retaining rod 8 are preferably the same as the diameter of the pillar. The reamer 7 and the retaining rod 8 are provided with scale values.

[0039] In some embodiments, the positioning drill 5 is a positioning ball drill; the drill bit diameter of the positioning ball drill is 0.6 mm, the diameter of the pilot drill 6 is 0.8 mm, and the diameter of the reamer drill 7 is 1.2 mm.

[0040] The steps of using the instrument set combined with the repair system of the present invention are as follows: prepare the implantation socket according to the positioning guide, implant the pier-type stent, and finally cooperate with the "bone powder" + "periosteum" GBR technique, implant the bone powder, cover the GBR membrane, separate and loosen the mucosal tissue, and pull and suture the gums after sufficient tension reduction. Please refer to Figure 6 , the specific steps are as follows:

[0041] Step 1: Place the guide plate at one end of the bone augmentation area, use a positioning ball drill to drill through the cortical bone for positioning, the drilling speed is about 1000rpm, and then use the pilot drill (drilling speed is about 800rpm) and the reamer drill (drilling speed is about 600rpm) in sequence to obtain an implant socket with the same diameter and length as the pillar.

[0042] Step 2: Insert a retention rod into the prepared first implantation socket to fix the position of the guide plate and prepare the second implantation socket. The operation process is as described above.

[0043] Step 3: Place the guide plate at the other end of the bone augmentation area, repeat steps 1 and 2, and two implantation sockets corresponding to the "bridge piers" can be obtained at both ends of the bone augmentation area. Implantation sockets can be prepared in multiple locations according to clinical needs.

[0044] Step 4: Insert the "bridge pier" into the implant socket. Different types of "bridge piers" can be used in combination.

[0045] Step 5: The pier-type stent is in place. After completing the operating steps of the instrument set, in conjunction with the traditional "bone powder + periosteum" GBR technique, bone powder is implanted between the two "piers" and the surface is covered with a GBR membrane to form a space conducive to bone regeneration.

[0046] All accessories in this set are sterilized by high temperature and high pressure and can be directly used for bone augmentation.

[0047] In summary, the repair system for vertical bone augmentation of the present invention adopts a pier-type stent with a pile portion (pillar), which can be directly fixed in the alveolar bone, and with the use of bone powder and periosteum, vertical bone augmentation can be achieved. The vertical bone augmentation instrument kit of the present invention can realize the smooth implantation of the repair system for vertical bone augmentation.

[0048] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A repair system for vertical bone augmentation, characterized in that: Contains: several pier-type stents, bone powder and periosteum; The pier-type bracket comprises: a porous bracket and two cylindrical pillars; the pillars are connected to the bottom of the porous bracket; when in use, the pillars are fixed in the jawbone; the bone powder is arranged between the pier-type brackets, and the periosteum covers the surface of the pier-type bracket and the bone powder; the porous bracket is square.

2. The repair system for vertical bone augmentation according to claim 1, characterized in that: The length of the pillar is 3 mm-8 mm, and the outer diameter is 1 mm-1.2 mm.

3. The repair system for vertical bone augmentation according to claim 1, characterized in that: The repair system comprises pier-type brackets of different sizes, so that the repair system can be adapted to different bone defect cases by adopting pier-type brackets of different sizes and adjusting the number and spacing of the pier-type brackets.

4. The repair system for vertical bone augmentation according to claim 1, characterized in that: The pore size of the porous support is 200 μm-500 μm; the length of the porous support from the buccal and lingual direction of the alveolar bone is 5 mm-10 mm, the height is 3 mm-10 mm, and the thickness is 2 mm-5 mm.

5. The repair system for vertical bone augmentation according to claim 1, characterized in that: The pier-type support is made of degradable materials.

6. An instrument kit for vertical bone augmentation, characterized in that: The invention comprises: a repair system for vertical bone augmentation as claimed in any one of claims 1 to 5, and supporting tools; the pier-type support comprises: two pillars arranged in parallel; The matching tools are used to prepare an implantation socket that matches the pillar; the matching tools include: a guide plate, a positioning drill, a pilot drill, a reaming drill, and a retaining rod; the guide plate is provided with two guide plate holes that match the outer diameter of the pillar, and the guide plate holes are used to position the pillar when inserted into the bone defect area; the positioning drill is used to drill through the cortical bone at the position of the guide plate hole, and the pilot drill and reaming drill are used to obtain an implantation socket with a diameter and length substantially the same as those of the pillar at the position of the guide plate hole; the retaining rod is used to be inserted into the prepared first implantation socket to fix the guide plate and position the second implantation socket.

7. The instrument kit for vertical bone augmentation according to claim 6, characterized in that: The diameter of the guide plate hole, the diameter of the reamer, the diameter of the retaining rod and the diameter of the support column are the same.

8. The instrument kit for vertical bone augmentation according to claim 6, characterized in that: The positioning drill is a positioning ball drill; the drill bit diameter of the positioning ball drill is 0.6 mm, the diameter of the pilot drill is 0.8 mm, and the diameter of the reamer drill is 1.2 mm.

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