CN216221749U

CN216221749U - Implant surface modification device

Info

Publication number: CN216221749U
Application number: CN202122663637.7U
Authority: CN
Inventors: 周俊; 朱添幸; 常林; 陆友; 陈秀荣
Original assignee: Guilin Woodpecker Medical Instruments Co Ltd
Current assignee: Guilin Woodpecker Medical Instruments Co Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-08
Anticipated expiration: 2031-11-02

Abstract

The implant surface modification device of the embodiment of the utility model relates to the technical field of dental implantation, and is characterized in that a closed discharge cavity enclosed by an inner tube and an outer tube is filled with discharge gas, the inner circumference of the inner tube is surrounded by the inner electrode, the outer circumference of the outer tube is surrounded by the outer electrode, therefore, when the inner electrode and the outer electrode are electrified and applied with electric energy, the discharge gas is excited to emit ultraviolet light, the ultraviolet light emitted by the discharge gas towards the inner side of the inner tube directly penetrates through the inner tube to irradiate the implant in the inner tube, thereby modifying the surface of the implant, and the ultraviolet light emitted by the discharge gas towards the outer side of the outer tube can be directly reflected to the implant in the inner tube through the reflecting structure covered on the inner circumferential surface of the outer tube, the light energy is concentrated, the utilization rate of the light is improved, the time for modifying the surface of the implant is shortened, the infection risk of a patient is reduced, and meanwhile, the medical experience is good.

Description

Implant surface modification device

Technical Field

The utility model relates to the technical field of dental implantation, in particular to a device for modifying the surface of an implant.

Background

Currently, removable denture repair and implant repair are generally adopted for dentition loss. For removable denture restoration, its application scope is wide, the price is cheaper, but the foreign body sensation is stronger when the patient uses, and the comfort level is relatively poor, and for implant restoration, implant through implanting the implant that has biocompatibility in the osseous tissue, wait that the implant forms firm maintenance support after the osseointegration in the alveolar bone, the fixed connection of dental crown is carried out in the setting of rethread implantation base station, can obtain the restoration effect more similar with function, structure and the pleasing to the eye effect of natural tooth, has become more and more deficient patient's preferred restoration mode.

For the implant, the surface of the implant is generally required to be irradiated by an ultraviolet lamp for modification, so that the hydrophilic performance of the surface of the implant can be improved, the proliferation and the attachment function of osteoblasts after the implant is placed on bone tissues can be promoted, and the bone healing time of a patient can be accelerated.

However, the existing device for modifying the surface of the implant has long treatment time on the implant, further influences the time of the operation of a doctor, increases the infection risk of a patient, and has long waiting time and poor medical experience.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an implant surface modification device, which has the advantages of short implant surface modification treatment time, reduced infection risk of patients and good medical experience.

In a first aspect, the present invention provides an apparatus for modifying a surface of an implant, comprising:

a discharge vessel comprising an inner tube and an outer tube which together enclose a closed discharge cavity for filling with a discharge gas, the inner tube being adapted for placement of an implant;

the outer electrode is arranged around the outer peripheral surface of the outer tube;

an inner electrode surrounding an inner circumferential surface of the inner tube, the discharge gas being excited by the inner electrode and the outer electrode to generate ultraviolet light;

and the reflecting structure at least partially covers the inner peripheral surface of the outer tube and can reflect the ultraviolet light to the implant.

In an alternative embodiment, the light reflecting structure entirely covers the inner circumferential surface of the outer tube.

In an alternative embodiment, a generatrix of the inner circumferential surface of the outer tube is an arc line, and a center of curvature of the arc line is located on a side of the arc line close to the inner tube.

In an alternative embodiment, the light reflecting structure is a light reflecting film or a light reflecting coating.

In an alternative embodiment, the inner tube is made of a quartz glass material.

In an alternative embodiment, the implant surface modification apparatus further comprises:

and the support piece is inserted into the base station connecting hole of the implant and can penetrate through the inner tube along the axial direction of the inner tube in a moving manner so as to enable the implant to enter the inner tube or move out of the inner tube.

In an alternative embodiment, the support member is rotatable relative to the inner tube to rotate the implant.

a first connecting member provided at a first end of the discharge vessel and provided with a through hole extending in an axial direction of the inner tube, the supporting member being movably inserted through the through hole and the inner tube;

and the second connecting piece is arranged at the second end of the discharge vessel, and the inner electrode is pressed by the first connecting piece and the second connecting piece, wherein the second connecting piece is provided with a gas hole which is used for exhausting gas in the inner tube.

In an alternative embodiment, the first end of the discharge vessel is formed with an annular first connection surface, the first connection member includes a first connection section and a first matching section which are coaxially connected, an outer diameter of the first connection section is larger than an outer diameter of the first matching section, the through hole axially penetrates through the first connection section and the first matching section, the first matching section is accommodated in the inner tube, the inner electrode portion is pressed between an outer circumferential surface of the first matching section and an inner circumferential surface of the inner tube, and an end surface of the first connection section close to the second connection member is attached to the first connection surface.

In an alternative embodiment, the second end of the discharge vessel is formed with an annular second connection surface, the second connection member includes a second connection section and a second fitting section that are coaxially connected, an outer diameter of the second connection section is larger than an outer diameter of the second fitting section, the air hole axially penetrates through the second connection section and the second fitting section, the second fitting section is accommodated in the inner tube, the inner electrode is pressed between an outer circumferential surface of the second fitting section and an inner circumferential surface of the inner tube, and an end surface of the second connection section, which is close to the second connection member, is attached to the second connection surface.

According to the implant surface modification device provided by the embodiment of the utility model, the discharge gas is filled in the closed discharge cavity which is formed by the inner tube and the outer tube together, the inner electrode is arranged on the inner circumferential surface of the inner tube in a surrounding manner, the outer electrode is arranged on the outer circumferential surface of the outer tube in a surrounding manner, so that when the inner electrode and the outer electrode are electrified and power is applied, the discharge gas is excited to emit ultraviolet light, the ultraviolet light emitted by the discharge gas towards the inner side of the inner tube directly penetrates through the inner tube to irradiate the implant in the inner tube, the modification treatment of the implant surface is carried out, the ultraviolet light emitted by the discharge gas towards the outer side of the outer tube is directly reflected to the implant in the inner tube through the reflecting structure covered on the inner circumferential surface of the outer tube, the light energy is concentrated, the light utilization rate is improved, the time for modifying the implant surface is shortened, the infection risk of a patient is reduced, and the medical experience is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an exploded view of an apparatus for modifying the surface of an implant according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an implant surface modification apparatus according to an embodiment of the present invention in a use state;

FIG. 3 is a perspective view of a discharge vessel according to an embodiment of the present invention.

Icon: 1-a discharge vessel; 10-an inner tube; 12-an outer tube; 14-a first connection face; 16-a second connection face; 18-a discharge cavity; 2-an inner electrode; 3-an outer electrode; 4-a light reflecting structure; 5-planting body; 6-a first connector; 60-a first connecting section; 601-a first connection hole; 62-a first mating segment; 64-punching; 7-a second connector; 70-a second connection section; 702-a second connection hole; 72-a second mating segment; 74-air holes; 8-a support member; 80-a connecting seat; 82-support bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 and 2, an embodiment of the present invention provides an implant 5 surface modification apparatus, including a discharge vessel 1, an outer electrode 3, an inner electrode 2, and a light reflecting structure 4, where the discharge vessel 1 includes an inner tube 10 and an outer tube 12, the inner tube 10 and the outer tube 12 together enclose a closed discharge cavity 18, the discharge cavity 18 is used for filling a discharge gas, and the inner tube 10 is used for placing the implant 5 therein. The outer electrode 3 is provided around the outer peripheral surface of the outer tube 12. The inner electrode 2 is surrounded on the inner circumferential surface of the inner tube 10, and the discharge gas is excited by the inner electrode 2 and the outer electrode 3 to generate ultraviolet light. The light reflecting structure 4 at least partially covers the inner circumferential surface of the outer tube 12 and is capable of reflecting ultraviolet light to the implant 5.

Thus, by filling the closed discharge cavity 18 defined by the inner tube 10 and the outer tube 12 together with the discharge gas, an inner electrode 2 is provided around the inner peripheral surface of the inner tube 10, an outer electrode 3 is provided around the outer peripheral surface of the outer tube 12, therefore, when the inner electrode 2 and the outer electrode 3 are electrified to apply electric energy, the discharge gas is excited to emit ultraviolet light, the ultraviolet light emitted by the discharge gas towards the inner side of the inner tube 10 directly passes through the tube wall of the inner tube 10 to irradiate the implant 5 in the inner tube 10, thereby modifying the surface of the implant 5, and the ultraviolet light emitted by the discharge gas towards the outer side of the outer tube 12 is directly reflected by the reflecting structure 4 covered on the inner circumferential surface of the outer tube 12, passes through the tube wall of the inner tube 10 and irradiates to the implant 5, the light energy is concentrated, the light utilization rate is improved, the time for modifying the surface of the implant 5 is shortened, the infection risk of a patient is reduced, and meanwhile, the medical experience is good.

Specifically, the discharge gas may be any gas capable of generating excimer ultraviolet light, such as Xe, ArF, KrCL, or the like. The discharge gas is discharged by the electric power formed by the inner electrode 2 and the outer electrode 3, thereby forming excited molecules (molecules in an excited state), and ultraviolet rays are emitted when the excited molecules are turned to a ground state. Therefore, in the embodiment of the present invention, the surface of the implant 5 may be modified to be hydrophilic by ultraviolet rays generated from the excitation of the discharge gas, facilitating the adhesion of osteoblasts of the bone tissue after the implantation. Further, the ultraviolet rays can decompose and remove organic matter remaining on the surface of the implant 5 to achieve sterilization and cleaning effects.

The discharge vessel 1 is made of a transparent material with a high light transmittance, for example, the inner tube 10 is made of a quartz glass material, so that the attenuation of the ultraviolet light when penetrating the inner tube 10 is reduced, thereby ensuring a sufficient intensity of the ultraviolet light irradiated to the implant 5. Since the ultraviolet light does not need to exit the outer tube 12 at all, the material is not limited, and may be made of quartz glass material consistent with the inner tube 10, or may be made of material with lower cost, so as to reduce the manufacturing cost of the device.

The inner tube 10 and the outer tube 12 are coaxial, a closed discharge cavity 18 enclosed between the inner tube 10 and the outer tube 12 is annular, the reflective structure 4 completely covers the inner circumferential surface of the outer tube 12, and in addition, the discharge cavity 18 is in a vacuum pressure environment, so that the attenuation degree of ultraviolet light emitted by discharge gas during transmission in the discharge cavity 18 is reduced, and the whole outer surface of the implant 5 can be quickly modified by being irradiated by the ultraviolet light. The reflective structure 4 may be a reflective film, and is formed on the inner circumferential surface of the outer tube 12 through a coating process, wherein a vacuum dielectric coating, a vacuum aluminum plating, an anodic oxidation, and the like may be adopted, and a difference in the coating process may also affect the reflective rate of the reflective film, for example, the vacuum dielectric coating, the vacuum aluminum plating, the anodic oxidation, or a reflective coating. Of course, the light reflecting structure 4 may also be a light reflecting coating formed on the inner side surface of the outer tube 12 by spraying, dipping, or other processes.

Because the axial length of implant 5 is less than the length of inner tube 10, consequently set up the inner peripheral surface of outer tube 12 to the curved surface, the generating line of the inner peripheral surface of outer tube 12 is the pitch arc promptly, the centre of curvature of pitch arc is located the one side that the pitch arc is close to inner tube 10 to reflecting structure 4 can play the spotlight effect, and the ultraviolet light that the discharge gas outwards jetted out can focus on implant 5 after being reflected by reflecting structure 4, with the utilization ratio of improvement light, and the surface modification efficiency of improvement implant 5.

The device for modifying the surface of the implant 5 further comprises a support member 8, wherein the support member 8 is used for being inserted into a base station connecting hole of the implant 5, and the support member 8 can be movably arranged in the inner tube 10 along the axial direction of the inner tube 10 in a penetrating way so as to enable the implant 5 to enter the inner tube 10 or move out of the inner tube 10. Namely, when the surface of the implant 5 needs to be modified, the support member 8 is moved out of the inner tube 10, the base station connecting hole of the implant 5 is sleeved outside the support member 8, then the support member 8 drives the implant 5 to enter the inner tube 10, the inner electrode 2 and the outer electrode 3 are electrified to carry out surface modification treatment, and after the modification is finished, the inner tube 10 is moved out through the support member 8, and the implant 5 is taken down to be used.

In order to ensure that the surface of the implant 5 is uniformly irradiated by the ultraviolet light, the support member 8 is configured to rotate relative to the inner tube 10 to rotate the implant 5.

The outer electrode 3 at least partially covers the outer circumferential surface of the outer tube 12, and specifically, the outer electrode 3 entirely covers the outer circumferential surface of the outer tube 12 in this embodiment. The inner electrode 2 has a structure capable of transmitting light, such as a mesh, a spiral, etc., so as to minimize the blocking of ultraviolet light. The inner electrode 2 at least partially covers the inner circumferential surface of the inner tube 10, i.e. the inner electrode 2 may completely cover the inner circumferential surface of the inner tube 10, so that the support member 8 is actually inserted into the inner electrode 2, and the implant 5 is located in the inner electrode 2, and since the relative areas of the inner electrode 2 and the outer electrode 3 are maximized, the intensity of the ultraviolet light generated by the excited discharge gas is also maximized, thereby further reducing the treatment time for surface modification of the implant 5 and improving the efficiency. Wherein, the inner electrode 2 clings to the inner peripheral surface of the inner tube 10 and the outer electrode 3 clings to the outer tube 12 surface of the outer tube 12, which can also improve the excitation degree of the discharge gas and then generate stronger ultraviolet light.

The implant 5 surface modification apparatus further comprises a first connecting member 6 and a second connecting member 7. The first connection member 6 is arranged at a first end of the discharge vessel 1 and is provided with a through-hole 64 extending in the axial direction of the inner tube 10, and the support member 8 is movably arranged through the through-hole 64 and the inner tube 10. A second connection member 7 is arranged at a second end of the discharge vessel 1, and the inner electrode 2 is pressed by the first connection member 6 and the second connection member 7, thereby restricting the movement of the inner electrode 2 relative to the inner tube 10. Wherein, the second connecting member 7 is provided with air holes 74, and the air holes 74 are used for exhausting the air in the inner tube 10, thereby forming a vacuum pressure environment in the inner tube 10, minimizing the attenuation of the ultraviolet light in the inner tube 10, and further improving the ultraviolet irradiation intensity irradiated to the implant 5. Wherein the first connecting member 6 and the second connecting member 7 are made of insulating materials to avoid high voltage breakdown between the inner electrode 2 and the outer electrode 3. The first connecting member 6 and the second connecting member 7 may be made of high temperature resistant insulating polymer material, such as PEEK.

Referring to fig. 1 to 3, the first end of the discharge vessel 1 is formed with an annular first connection surface 14, i.e. the surface between the first end of the inner tube 10 and the first end of the outer tube 12 has an annular first connection surface 14, the first connection member 6 is coaxial with the inner tube 10, the first connection member 6 is in the shape of a circular flange and comprises a first connection section 60 and a first mating section 62 which are coaxially connected, the outer diameter of the first connection section 60 is larger than that of the first mating section 62, and the first connection section 60 is far away from the second connection member 7 relative to the first mating section 62. A bore 64 is formed axially through the first connecting section 60 and the first mating section 62. The first fitting section 62 is accommodated in the inner tube 10, and the inner electrode 2 is partially pressed between the outer circumferential surface of the first fitting section 62 and the inner circumferential surface of the inner tube 10, thereby ensuring that one end of the inner electrode 2 is tightly attached to the inner tube 10. The end surface of the first connecting section 60 close to the second connecting member 7 abuts against the first connecting surface 14, thereby ensuring vacuum tightness in the inner tube 10. Specifically, the first connecting section 60 is provided with at least a plurality of first connecting holes 601 arranged at intervals in the circumferential direction, and a fastening member such as a screw can be screwed into the first connecting surface 14 through the first connecting hole 601, so as to realize the connection between the first connecting member 6 and the discharge vessel 1, wherein a sealing gasket made of an elastic material or a flexible material can be arranged between the end surface of the first connecting section 60 close to the second connecting member 7 and the first connecting surface 14 to enhance the sealing property, so as to prevent air from entering the inner tube 10 and ensure the vacuum environment inside the inner tube 10.

Support piece 8 includes connecting seat 80 and connects in the bracing piece 82 of this connecting seat 80, bracing piece 82 is used for inserting the base station connecting hole of planting body 5, the one side that connecting seat 80 was equipped with bracing piece 82 is used for keeping away from the terminal surface laminating of second connecting piece 7 with first connecting piece 6 (first linkage segment 60), when connecting seat 80 and the laminating of first connecting piece 6, bracing piece 82 wears to locate in perforation 64 and inner tube 10, thereby insert the planting body 5 of establishing on bracing piece 82 and be arranged in inner tube 10, in order to carry out surface modification treatment. In addition, when the connection seat 80 is attached to the first connection member 6, the connection seat 80 can rotate relative to the first connection member 6, so that the implant 5 inserted on the support rod 82 rotates relative to the inner tube 10, and uniform illumination of the surface of the implant 5 is ensured.

It should be noted that a sealing gasket made of flexible material or elastic material may be used to seal between the support member 8 and the first connecting member 6, so as to prevent air from entering the inner tube 10 from the gap between the support member 8 and the first connecting member 6. For example, a sealing gasket is arranged between the surface of the connecting seat 80 provided with the support rod 82 and the surface of the first connecting section 60 facing away from the second connecting part 7 to realize sealing, or an annular sealing gasket is arranged between the outer peripheral surface of the support rod 82 and the inner peripheral surface of the through hole 64 to realize sealing.

The second end of the discharge vessel 1 is formed with an annular second connection surface 16, that is, the surface between the second end of the inner tube 10 and the second end of the outer tube 12 has the annular second connection surface 16, the second connection member 7 includes a second connection section 70 and a second matching section 72 which are coaxially connected, the outer diameter of the second connection section 70 is larger than the outer diameter of the second matching section 72, the air hole 74 axially penetrates through the second connection section 70 and the second matching section 72, the second matching section 72 is accommodated in the inner tube 10, the inner electrode 2 is pressed between the outer circumferential surface of the second matching section 72 and the inner circumferential surface of the inner tube 10, so as to ensure the close fit of the other end of the inner electrode 2 and the inner tube 10, and further ensure the close fit of the outer circumferential surface of the whole inner electrode 2 and the inner circumferential surface of the inner tube 10 together with the first connection member 6. The end surface of the second connecting section 70 close to the second connecting piece 7 abuts against the second connecting surface 16, so that vacuum tightness in the inner tube 10 is ensured. Specifically, the second connection section 70 is provided with at least a plurality of second connection holes 702 arranged at intervals in the circumferential direction, and a fastener such as a screw can be screwed into the second connection surface 16 through the second connection holes 702, so as to realize the connection between the second connection member 7 and the discharge vessel 1, wherein a sealing gasket made of an elastic material or a flexible material can be arranged between the end surface of the second connection section 70 close to the first connection member 6 and the second connection surface 16 to enhance the sealing property, thereby ensuring the vacuum environment inside the inner tube 10.

To sum up, in the device for modifying the surface of the implant 5 according to the embodiment of the present invention, the inner tube 10 and the outer tube 12 together enclose the closed discharge cavity 18, the inner circumferential surface of the inner tube 10 encloses the inner electrode 2, and the outer circumferential surface of the outer tube 12 encloses the outer electrode 3, so that when the inner electrode 2 and the outer electrode 3 are electrified to apply electric energy, the discharge gas is excited to emit ultraviolet light, the ultraviolet light emitted by the discharge gas toward the inner side of the inner tube 10 directly passes through the tube wall of the inner tube 10 and irradiates to the implant 5 in the inner tube 10, thereby performing modification treatment on the surface of the implant 5, and the ultraviolet light emitted by the discharge gas toward the outer side of the outer tube 12 is directly reflected by the reflective structure 4 covered on the inner circumferential surface of the outer tube 12 and irradiates to the implant 5 through the tube wall of the inner tube 10, so that light energy is concentrated, thereby improving the utilization rate of light, and shortening the time for modifying the surface of the implant 5, the infection risk of the patient is reduced, and the medical experience is good.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An implant surface modification apparatus, comprising:

2. The implant surface modification apparatus of claim 1, wherein the light reflecting structure entirely covers an inner circumferential surface of the outer tube.

3. The implant surface modification apparatus according to claim 2, wherein a generatrix of the inner circumferential surface of the outer tube is an arc line, and a center of curvature of the arc line is located on a side of the arc line close to the inner tube.

4. The implant surface modification apparatus of claim 1, wherein the light reflecting structure is a light reflecting film or a light reflecting coating.

5. The implant surface modification apparatus of claim 1, wherein the inner tube is made of a quartz glass material.

6. The implant surface modification apparatus of claim 1, further comprising:

7. The implant surface modification apparatus of claim 6, wherein the support is rotatable relative to the inner tube to rotate the implant.

8. The implant surface modification apparatus of claim 6, further comprising:

9. The implant surface modification apparatus according to claim 8, wherein the first end of the discharge vessel is formed with an annular first connection surface, the first connection member includes a first connection section and a first mating section which are coaxially connected, an outer diameter of the first connection section is larger than an outer diameter of the first mating section, the through hole axially penetrates through the first connection section and the first mating section, the first mating section is accommodated in the inner tube, the inner electrode portion is pressed between an outer circumferential surface of the first mating section and an inner circumferential surface of the inner tube, and an end surface of the first connection section close to the second connection member is attached to the first connection surface.

10. The implant surface modification apparatus according to claim 8, wherein the second end of the discharge vessel is formed with an annular second connection surface, the second connection member includes a second connection section and a second fitting section which are coaxially connected, an outer diameter of the second connection section is larger than an outer diameter of the second fitting section, the air hole axially penetrates through the second connection section and the second fitting section, the second fitting section is accommodated in the inner tube, the inner electrode is pressed between an outer circumferential surface of the second fitting section and an inner circumferential surface of the inner tube, and an end surface of the second connection section, which is close to the second connection member, is attached to the second connection surface.