Implant for relieving neck pressure and implant system

Abstract

The utility model relates to an implant capable of relieving neck pressure, which comprises a main body, and the main body is divided into a blocking section, a neck section and a body section along the axial direction; the thread structure comprises a first thread and a second thread which are formed in the outer surface of the neck area and the outer surface of the body area respectively, the first thread is provided with a top face, a first cutting groove is formed in the top face in the spiral direction of the first thread, and a plurality of second cutting grooves are formed in the first thread in the axial direction; the depth of the second cutting groove is larger than that of the first cutting groove and smaller than the height of the first thread. And the blocking mechanism comprises a blocking groove annularly formed in the blocking section of the main body, and the blocking groove communicates with the thread groove of the first thread. By means of the arrangement, the first cutting groove and the second cutting groove are formed in the first thread, so that stress borne by bone tissue at the neck section is reduced, and meanwhile the blocking groove is matched to block germs and reduce the inflammation probability.

Description

Technical Field

[0001] The utility model relates to the technical field of implants, in particular to an implant and an implant system for alleviating neck pressure. Background Art

[0002] Dental implants are divided into two sections along the axial direction. One section is the main area of ​​the dental implant, which is in contact with the alveolar bone hard tissue; the other section is the neck area of ​​the dental implant, which is in contact with the marginal alveolar bone and soft tissue. To realize and restore the occlusal function of teeth, dental implants need to achieve rapid bone integration and prevent bacteria from adhering to the upper neck area of ​​the implant, and prevent peri-implantitis caused by bacterial adhesion and growth to form biofilm, which causes bone absorption and ultimately leads to implant shedding. With the widespread application of implant repair in clinical treatment and the large increase in clinical cases, the incidence of peri-implantitis has shown a clear upward trend. Peri-implant inflammation is the main cause of post-implant failure, accounting for more than 30% of the total number of failed cases, which has to attract the attention of dentists and material scientists.

[0003] In order to ensure the connection strength between the implant and the alveolar bone, the size of the groove on the alveolar bone is generally slightly smaller than the size of the implant, so that the groove in the alveolar bone and the implant are connected by interference fit. Although this improves the bone integration stability of the implant, it puts greater pressure on the neck of the implant, and the implant and the alveolar bone will continue to remain in a tensioned state, which not only causes discomfort to the patient, but the continuous compression of the bone tissue will also increase the infection rate leading to postoperative inflammation. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the implant and the alveolar bone will continue to remain in a tensioned state, which not only causes discomfort to the patient, but also continuously compresses the bone tissue and increases the infection rate leading to postoperative inflammation, thereby providing an implant that reduces neck pressure.

[0005] In order to solve the above technical problems, the utility model provides an implant for reducing neck pressure, comprising:

[0006] A main body, wherein the main body is divided into a blocking section, a neck section and a body section along the axial direction;

[0007] A thread structure, comprising: a first thread and a second thread respectively formed on the outer surface of the neck region and the body region, wherein the first thread has a top surface, the top surface is provided with a first cutting groove along the spiral direction of the first thread, the first thread is provided with a plurality of second cutting grooves along the axial direction, the depth of the second cutting groove is greater than the first cutting groove and less than the height of the first thread;

[0008] The blocking mechanism comprises a blocking groove arranged around the blocking section of the main body, wherein the blocking groove is communicated with the thread groove of the first thread.

[0009] In one embodiment of the utility model, the main body extends axially from the top to the crown end, and the crown end is provided with a blind hole axially, the blind hole includes a first hole and a second hole, the first hole is provided on the crown end surface and is a polygonal hole, the second hole is connected to the first hole and is smaller in size than the first hole, and the second hole is provided with an internal thread.

[0010] In one embodiment of the present invention, the surface of the second cutting groove is a concave arc surface, and the concave arc surface is connected to the first transition.

[0011] In one embodiment of the utility model, the first cutting groove is divided into a plurality of sub-cutting grooves by the second cutting groove, guide grooves are extended at both ends of the sub-cutting grooves along the spiral direction of the first thread, and the depth of the guide grooves gradually decreases toward the second cutting groove.

[0012] In one embodiment of the utility model, the first quilt cutting groove is divided into an upper end surface and a lower end surface along the axial direction, the upper end surface and the lower end surface are respectively close to the crown end and the top end, and the width of the upper end surface is greater than that of the lower end surface.

[0013] In one embodiment of the present invention, the first thread has at least three circles, the top surface width of each circle of the first thread gradually increases from the tip to the crown, and the first thread grooves between the first threads gradually increase from the tip to the crown.

[0014] In one embodiment of the utility model, the top surface width of the first thread is 0.3-0.4mm, the width of the sub-cutting groove is 0.1-0.15mm, the width of the upper end surface is 0.1-0.15mm, and the width of the lower end surface is 0.5-0.12mm.

[0015] In one embodiment of the present invention, the blocking groove is a concave arc groove, and the blocking groove has a first arc surface, a second arc surface and a third arc surface. The first arc surface is close to the crown end, the second arc surface is the bottom surface of the blocking groove, and the third arc surface is close to the tip and is connected to the thread groove of the first thread. The opening sizes of the first arc surface and the second arc surface are both smaller than their maximum axial inner diameters, and the size of the second arc surface is larger than the first arc surface.

[0016] In one embodiment of the present invention, the maximum depth of the second cutting groove is greater than that of the first cutting groove, and the material of at least the surface of the main body is titanium or titanium alloy.

[0017] The utility model also discloses an implant system, comprising the above-mentioned implant for alleviating neck pressure.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The utility model discloses an implant for reducing neck pressure, wherein the neck section is located between the blocking section and the main body section, and the diameter thereof is smaller than the blocking section and the main body section, thereby forming a neck area to reduce the stress on the neck of the implant; the main body section is located below the neck section, and is used for being implanted in bone tissue to fix the implant; the blocking groove is connected with the thread groove of the first thread, thereby forming a continuous spiral groove, which is beneficial to the growth of bone tissue and the implantation of the implant, and at the same time isolates external bacteria to prevent pathogens from invading the main body of the implant; through the first thread, through the first cutting groove and the second cutting groove provided on the first thread, the residual deformation of the pre-grooving can be embedded in the first cutting groove and the second cutting groove, thereby reducing the compressive stress on the bone tissue at the neck section, and at the same time cooperates with the blocking groove to block pathogens and reduce the probability of inflammation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0021] Figure 1 It is a stereoscopic diagram of the implant of the utility model;

[0022] Figure 2 It is a front view of the implant of the utility model;

[0023] Figure 3 is a cross-sectional view of the implant of the utility model;

[0024] Figure 4 It is a front cross-sectional view of the implant of the utility model;

[0025] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0026] Explanation of the markings in the specification: 1. main body; 2. first thread groove; 3. first cutting groove; 4. second cutting groove; 5. first thread; 6. blocking section; 7. neck section; 8. body section; 9. second thread; 10. first hole; 11. second hole; 12. internal thread; 13. blocking groove; 131. first arc surface; 132. second arc surface; 133. third arc surface; 14. top surface; 141. upper end surface; 142. lower end surface; 15. guide groove. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0028] Example

[0029] Reference Figure 1-5 As shown, an implant for reducing neck pressure of the utility model comprises:

[0030] A main body 1, wherein the main body 1 is divided into a blocking section 6, a neck section 7 and a body section 8 along the axial direction;

[0031] The thread structure comprises: a first thread 5 and a second thread 9 respectively provided on the outer surface of the neck region and the body region, the first thread 5 having a top surface 14, a first cutting groove 3 provided along the spiral direction of the first thread 5, a plurality of second cutting grooves 4 provided along the axial direction of the first thread 5, the depth of the second cutting groove 4 being greater than the first cutting groove 3 and less than the height of the first thread 5;

[0032] The blocking mechanism comprises a blocking groove 13 which is arranged around the blocking section 6 of the main body 1 , and the blocking groove 13 is communicated with the thread groove of the first thread 5 .

[0033] The utility model discloses an implant for reducing neck pressure. The main body 1 is divided into a blocking section 6, a neck section 7 and a body section 8 from top to bottom along the axial direction. The blocking section 6 is located at the top of the implant and is used to limit the depth of the implant implanted into the bone tissue. The neck section 7 is located between the blocking section 6 and the body section 8. The diameter of the neck section 7 is smaller than that of the blocking section 6 and the body section 8, forming a neck area to reduce the stress on the neck of the implant. The body section 8 is located below the neck section 7 and is used to be implanted in the bone tissue to fix the implant. The thread structure includes a first thread 5 and a second thread 9. The first thread 5 It is opened on the outer surface of the neck section 7, the second thread 9 is opened on the outer surface of the main body section 8, and the top surface 14 is opened with a first cutting groove 3 along the spiral direction of the first thread 5. The first cutting groove 3 can be a continuous spiral groove or a plurality of intermittently distributed grooves. The first thread 5 is also opened with a plurality of second cutting grooves 4 along the axial direction. The depth of the second cutting groove 4 is greater than the first cutting groove 3, but less than the height of the first thread 5. The second cutting grooves 4 are distributed at intervals along the axial direction to divide the first thread 5 into a plurality of thread segments. The blocking mechanism includes a blocking groove 13 arranged in an annular manner on the blocking section 6 of the main body 1. The blocking groove 13 is connected with the thread groove of the first thread 5, so that a continuous spiral groove is formed between the blocking section 6 and the neck section 7. When the implant of this embodiment is in use, the main body section 8 is implanted into the bone tissue, the first thread 5 engages with the bone tissue to provide preliminary fixation for the implant, the neck section 7 is implanted into the bone tissue, and the second thread 9 engages with the bone tissue. Since the first thread 5 is provided with the first cutting groove 3 and the second cutting groove 4, the pre-grooved surplus is deformed and embedded in the first cutting groove 3 and the second cutting groove 4, which can reduce the stress on the bone tissue at the neck section 7. The blocking groove 13 is connected with the thread groove of the first thread 5 to form a continuous spiral groove, which is conducive to the growth of bone tissue and the implantation of the implant, and at the same time isolates external bacteria to prevent pathogens from invading the main body of the implant. By setting the first thread 5, the stress of the neck bone tissue can be effectively reduced. At the same time, the setting of the blocking groove 13 is conducive to the bone integration of the implant.

[0034] See also Figure 1-4As shown, the main body 1 extends axially from the top to the coronal end, and the coronal end is provided with a blind hole axially, the blind hole includes a first hole 10 and a second hole 11, the first hole 10 is provided on the coronal end surface and is a polygonal hole, the second hole 11 is connected to the first hole 10 and is smaller in size than the first hole 10, the second hole 11 is provided with an internal thread 12, the first hole 10 is provided on the coronal end surface, and its cross section is a polygon, preferably a hexagon or an octagon, the polygonal hole can prevent the restoration from rotating on the implant, and improve the torsion resistance of the implant, the size of the second hole 11 is smaller than the first hole 10, so that the blind hole forms a step surface, and the inner wall thereof is provided with a The internal thread 12 is used for threaded connection with the restoration. The main body section 8 is first implanted into the bone tissue, and then the neck section 7 is implanted into the bone tissue. The first thread 5 and the second thread 9 respectively engage with the bone tissue to provide initial stability. The blocking groove 13 and the first thread 5 form a continuous spiral groove, which is beneficial to the growth of bone tissue and enhances the bone bonding ability of the implant. After the implant is implanted, it can be connected to the restoration through a blind hole. The internal thread 12 of the second hole 11 can be fastened with the restoration thread. The internal thread 12 of the second hole 11 is used to achieve a reliable connection between the implant and the restoration. At the same time, the design of the blind hole will not affect the mechanical properties and stability of the implant.

[0035] See also Figure 3 As shown, the surface of the second cutting groove 4 is a concave arc surface, and the concave arc surface is connected to the first transition. The surface of the second cutting groove 4 is a concave arc surface, and the concave arc surface is smoothly transitioned to the top surface 14 of the first thread 5 without sharp edges or steps. The design of this transition connection can reduce stress concentration and avoid fracture or fatigue failure caused by stress concentration in the second cutting groove 4 of the implant. The other structures of the implant are the same as the above embodiment, including the main body 1, the first thread 5, the second thread 9, the blocking groove 13 and the blind hole. The main body 1 is divided into a blocking section 6, a neck section 7 and a main body section 8 along the axial direction, and a blind hole for connecting the restoration is provided at the crown end. The first thread 5 is provided on the outer surface of the neck section 7, and has a top surface 14, a first cutting groove 3 and a second cutting groove 4. The second thread 9 is provided on the outer surface of the main body section 8. The blocking groove 13 is arranged in an annular manner on the blocking section 6 and is connected to the thread groove of the first thread 5. The blind hole includes a polygonal first hole 10 and a second hole 11 with an internal thread 12. The smooth transition between the concave arc surface of the second cutting groove 4 and the top surface 14 of the first thread 5 can further reduce the stress concentration at the neck section 7 of the implant, improve the fatigue resistance and service life of the implant, and at the same time, the concave arc surface will not have an adverse effect on the implantation process and initial stability of the implant. This embodiment adopts a concave arc surface design on the surface of the second cutting groove 4, and realizes a smooth transition connection between the concave arc surface and the top surface 14 of the first thread 5.

[0036] See also Figure 2As shown, the first cutting groove 3 is divided into several sub-cutting grooves by the second cutting groove 4, and the two ends of the sub-cutting grooves extend with guide grooves 15 along the spiral direction of the first thread 5. The depth of the guide groove 15 gradually decreases toward the second cutting groove 4. The sub-cutting grooves can reduce the continuous cutting length within a single pitch of the first thread 5 to avoid stress concentration at the first cutting groove 3, and cooperate with the guide groove 15 to connect the adjacent second cutting grooves 4, so as to facilitate the deformation of bone chips and tissues into the first cutting groove 3 and the second cutting groove 4. The guide groove 15 can guide the bone tissue to grow along the spiral direction of the first thread 5 to promote the bone integration of the implant. The depth gradient design of the guide groove 15 can achieve a smooth transition between the guide groove 15 and the second cutting groove 4, reducing stress concentration. When the implant of this embodiment is in use, the synergistic effect of the sub-cutting grooves and the guide groove 15 can reduce the stress of the neck section 7 while promoting the bone integration of the implant and improving the long-term stability of the implant. The gradient design of the guide groove 15 also helps to further optimize the stress distribution of the neck section 7 of the implant.

[0037] See also Figure 5 As shown, the first quilt cutting groove is divided into an upper end face 141 and a lower end face 142 along the axial direction, and the upper end face 141 and the lower end face 142 are respectively close to the crown end and the top end, and the width of the upper end face 141 is greater than that of the lower end face 142. The width of the upper end face 141 is smaller, which can reduce the cross-sectional area of ​​the implant neck segment 7, thereby reducing the rigidity of the neck segment 7, so that it can produce appropriate deformation when subjected to stress, thereby reducing the stress of the bone tissue; secondly, the width of the lower end face 142 is larger, which can increase the contact area between the implant neck segment 7 and the bone tissue, thereby improving the initial stability of the implant; finally, the width difference between the upper end face 141 and the lower end face 142 can form a certain step, which is beneficial to the growth and locking of bone tissue.

[0038] The first thread 5 has at least three circles, and the width of the top surface 14 of each circle of the first thread 5 gradually increases from the tip to the crown, and the first thread 5 grooves 2 between the first threads 5 gradually increase from the tip to the crown, so that the contact area of ​​the cervical bone tissue is increased and the pressure is reduced, thereby alleviating the stress concentration of the cervical bone tissue. The width of the lower end surface 142 and the upper end surface 141 of the first thread 5 near the tip decreases accordingly, but the width of the guide groove 15 and the first cutting groove 3 remains unchanged.

[0039] Reference Figure Figure 3-Figure 5As shown, the width of the top surface 14 of the first thread 5 is 0.3mm-0.4mm, the width of the sub-cutting groove is 0.1mm-0.15mm, the width of the upper end surface 141 is 0.1mm-0.15mm, the width of the lower end surface 142 is 0.5mm-0.12mm, the width a of the top surface 14 of the first thread 5 is 0.3mm-0.4mm, preferably, the width a of the top surface 14 is 0.36mm, and the setting of the width a of the top surface 14 needs to take into account two factors: the mechanical strength of the implant and the pressure on the bone tissue. When the width a of the top surface 14 is less than 0.3mm, the mechanical strength of the first thread 5 is low, and it is easy to deform or break during the implantation process. When the width a of the top surface 14 is greater than 0.4mm, the first thread 5 is too large, resulting in a large implant size, which is not suitable for most patients. The width b of the first cutting groove 3 is 0.1mm-0.15mm. Preferably, the width b of the first cutting groove 3 is 0.14mm. The width c of the upper end face 141 of the first cutting groove 3 is 0.1mm-0.15mm, preferably, the width c of the upper end face 141 is 0.14mm; the width d of the lower end face 142 of the first cutting groove 3 is 0.05mm-0.12mm. By setting the size of the top surface 14 of the first thread 5 and the first cutting groove 3, while ensuring that the implant has good initial stability, the pressure on the neck bone tissue can be further reduced, the risk of neck bone absorption is reduced, the size of the first thread 5 can be accurately controlled, and the stability of the implant performance can be ensured. Preferably, the width d of the lower end face 142 is 0.08mm. The width c of the upper end face 141 is greater than the width d of the lower end face 142, so that the smaller size of the lower end face 142 thread can be well cut into the groove of the alveolar bone, which is conducive to cutting bone tissue and collecting bone debris.

[0040] The blocking groove 13 is a concave arc groove, and the blocking groove 13 has a first arc surface 131, a second arc surface 132 and a third arc surface 133. The first arc surface 131 is close to the crown end, the second arc surface 132 is the bottom surface of the blocking groove 13, and the third arc surface 133 is close to the tip and is connected to the thread groove of the first thread 5. The opening sizes of the first arc surface 131 and the second arc surface 132 are both smaller than their maximum axial inner diameters, and the size of the second arc surface 132 is larger than the first arc surface 131, that is, the openings of the first arc surface 131 and the second arc surface 132 gradually shrink toward the inside of the blocking groove 13. The first curved surface 131 and the second curved surface 132 are closed together, so that the first curved surface 131 and the second curved surface 132 form an annular cavity with an opening toward the blocking groove 13. This structure can better limit the outflow of bone debris from the crown end side and the bottom surface, and improve the collection effect of the blocking groove 13 on bone debris. Preferably, the opening size of the first curved surface 131 is 1 / 3-2 / 3 of its maximum axial inner diameter, and the opening size of the second curved surface 132 is 1 / 2-5 / 6 of its maximum axial inner diameter. The third curved surface 133 smoothly transitions with the first thread groove 23, and bone debris can enter the blocking groove 13 through the third curved surface 133 and be collected. Preferably, the third curved surface 133 is a curved surface with a curved surface radius of 0.3mm-0.8mm, and more preferably, the curved surface radius is 0.5mm. The curved surface structure can reduce the resistance when bone debris enters the blocking groove 13, and improve the collection efficiency of the blocking groove 13.

[0041] See also Figure 3 As shown, the maximum depth of the second cutting groove 4 is greater than the first cutting groove 3, so that the first cutting groove 3 can be interrupted and divided into several sub-cutting grooves, and the depth of the second cutting groove 4 is also less than the thread groove of the first thread 5, that is, the first thread groove 2, so that the second cutting groove 4 can also be divided into several parts. The outer surface of the implant can be provided with an additive or non-additive surface structure to enhance bone integration. The surface structure can be prepared by mechanical grinding, chemical etching, laser processing, additive processing and a combination thereof. The material of at least the surface of the main body 1 is titanium or titanium alloy. Titanium and its alloys have good biocompatibility and bioinertness, which can effectively reduce the rejection reaction and infection risk of the implant in the human body, and are conducive to the healing and fusion of the implant with the surrounding bone tissue. At the same time, the mechanical properties of titanium can meet the strength and stability requirements of the implant during implantation and use.

[0042] This embodiment also discloses an implant system, including the above-mentioned implant for reducing neck pressure.

[0043] The implant system described in this embodiment also includes an implant, a transfer base, a base screw and a prosthesis, wherein the transfer base is fixed to the implant by the base screw and is used to connect the implant and the prosthesis. The transfer base can help shape the gums and protect the implant during the bone integration period. Preferably, the transfer base is made of titanium alloy material.

[0044] The transfer abutment is fixed to the implant by the abutment screw, which is threadedly connected to the implant. The connection method may be an internal hexagon connection, an external hexagon connection or a Morse taper connection. Preferably, an internal hexagon connection is used, which has good anti-rotation performance and high connection strength. The restoration is fixed on the transfer abutment to restore the patient's oral functions and aesthetics such as chewing and pronunciation. The restoration can be a crown, a bridge, etc., and the material can be zirconium oxide, lithium disilicate, porcelain, etc. Preferably, zirconium oxide material is used, which has high strength, high toughness and good biocompatibility, and has a good optical appearance, and can obtain an ideal aesthetic restoration effect.

[0045] By using implants that reduce neck pressure, the risk of neck bone resorption can be effectively reduced, and the long-term success rate of implant restoration can be improved. The design of the transfer base, base screw and restoration takes into account both functionality and aesthetics, which can help patients restore oral function and improve their quality of life. This implant system has a reasonable structure and mature manufacturing process, and can be widely used in oral implant restoration for various types of edentulous patients.

[0046] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the present utility model.

Claims

1. An implant for relieving neck pressure, characterized in that: include: A main body, wherein the main body is divided into a blocking section, a neck section and a body section along the axial direction; A thread structure, comprising: a first thread and a second thread respectively formed on the outer surface of the neck region and the body region, wherein the first thread has a top surface, the top surface is provided with a first cutting groove along the spiral direction of the first thread, the first thread is provided with a plurality of second cutting grooves along the axial direction, the depth of the second cutting groove is greater than the first cutting groove and less than the height of the first thread; The blocking mechanism comprises a blocking groove arranged around the blocking section of the main body, wherein the blocking groove is communicated with the thread groove of the first thread.

2. The implant for relieving neck pressure according to claim 1, characterized in that: The main body extends axially from the top to the crown end, and the crown end is provided with a blind hole axially. The blind hole includes a first hole and a second hole. The first hole is a polygonal hole opened on the crown end surface, the second hole is connected to the first hole and is smaller in size than the first hole, and the second hole is provided with an internal thread.

3. The implant for relieving neck pressure according to claim 2, characterized in that: The surface of the second cutting groove is a concave arc surface, and the concave arc surface is connected to the first transition.

4. The implant for relieving neck pressure according to claim 1, characterized in that: The first cutting groove is divided into a plurality of sub-cutting grooves by the second cutting groove. Both ends of the sub-cutting grooves are provided with guide grooves extending along the spiral direction of the first thread. The depth of the guide grooves gradually decreases toward the second cutting groove.

5. The implant for relieving neck pressure according to claim 4, characterized in that: The first quilt cutting groove is divided into an upper end surface and a lower end surface along the axial direction. The upper end surface and the lower end surface are respectively close to the crown end and the top end. The width of the upper end surface is greater than that of the lower end surface.

6. The implant for relieving neck pressure according to claim 1, characterized in that: The first thread has at least three circles, the top surface width of each circle of the first thread gradually increases from the tip to the crown, and the first thread grooves between the first threads gradually increase from the tip to the crown.

7. The implant for relieving neck pressure according to claim 5, characterized in that: The top surface width of the first thread is 0.3-0.4mm, the width of the sub-cutting groove is 0.1-0.15mm, the width of the upper end surface is 0.1-0.15mm, and the width of the lower end surface is 0.5-0.12mm.

8. The implant for relieving neck pressure according to claim 1, characterized in that: The blocking groove is a concave arc groove, and the blocking groove has a first arc surface, a second arc surface and a third arc surface. The first arc surface is close to the crown end, the second arc surface is the bottom surface of the blocking groove, and the third arc surface is close to the tip and is connected to the thread groove of the first thread. The opening sizes of the first arc surface and the second arc surface are both smaller than their maximum axial inner diameters, and the size of the second arc surface is larger than the first arc surface.

9. The implant for relieving neck pressure according to claim 1, characterized in that: The maximum depth of the second cutting groove is greater than that of the first cutting groove, and at least the surface of the main body is made of titanium or titanium alloy.

10. An implant system, characterized in that: It also includes an implant for relieving neck pressure as described in any one of claims 1-9.

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