JP2014230656A - Film manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film manufacturing apparatus capable of shortening a setting time of a work for the apparatus, and an irradiation time of ultraviolet, and causing less risk of the damage of a formed polymer layer.SOLUTION: A film manufacturing apparatus includes: a work housing part 40 which has a first cover 41 with ultraviolet-transmitting property, having a first surface part arranged along a first front face as at least one part of one side part on the surface of a work 8, with a gap between the first front face, and a second cover 46 with ultraviolet-transmitting property, having a second surface part arranged along a second front face as at least one part of the opposite side of the first front face on the surface of the work 8, with a gap between the second front face, and can hold a solution containing monomer to be injected between the work 8 housed in the inside; an ultraviolet irradiation part 30 which can irradiate ultraviolet to a first front face side and a second front face side through the first cover 41 and the second cover 46; and a support mechanism 25 which supports the work housing part 40.

Description

  The present invention relates to a membrane manufacturing apparatus used for manufacturing an artificial joint component in which a sliding surface sliding with respect to another member is generated by photograft polymerization.

  Conventionally, in order to improve the wear resistance of an artificial joint, it is known to form a sliding surface of an artificial joint component with a coating layer. As an apparatus for forming such a coating layer, for example, Patent Document 1 discloses a film forming apparatus (film manufacturing apparatus) for forming a polymer layer by photograft polymerization on the surface of a base material that is a main component of an artificial joint component. ) Is disclosed. This film manufacturing apparatus includes a lens (cover). This cover is formed so that at least a part thereof faces the curved surface of a member (work) having a curved surface that is a target of photograft polymerization. In this film manufacturing apparatus, a solution containing a monomer is held between the curved surface of the workpiece and the lens, and the solution is irradiated with light. Thereby, the polymer layer by photograft polymerization is formed on the curved surface.

JP 2011-197544 A

  By the way, when performing the photograft polymerization on both surfaces of the workpiece by the film manufacturing apparatus disclosed in Patent Document 1, the following problems occur. Specifically, after the work and cover are set on the apparatus so that one surface of the work is irradiated with light, the cover and the work are removed, and the other surface of the work is irradiated with light. Thus, it is necessary to set the work and cover to the apparatus and perform light irradiation again. That is, since it is necessary to set a workpiece | work and a cover in an apparatus twice, the time which sets a workpiece | work with respect to an apparatus, and the irradiation time of an ultraviolet-ray will become long.

  In addition, when light is irradiated on the other side of the surface after irradiating the surface on one side, if the surface on one side (the part where the polymer layer is formed by polymerization) is gripped, that part is damaged. There is a risk. Moreover, if the other surface is gripped, the polymerization initiator applied to that surface may be peeled off. Furthermore, after light irradiation is performed on one surface, when a polymerization initiator is applied to the other surface, the polymerization initiator or its solvent may damage a portion that has already been polymerized.

  The present invention is for solving the above-described problems, and the object of the present invention is to provide light to a part that requires light irradiation with respect to a work that requires light irradiation on a part on one side and a part on the opposite side of the surface. An object of the present invention is to provide a film production apparatus which can be irradiated, can shorten the work set time and ultraviolet irradiation time for the apparatus, and has a low risk of damage to the formed polymer layer.

  (1) In order to achieve the above object, a membrane manufacturing apparatus according to an aspect of the present invention forms a polymer layer constituting a sliding surface on a surface of a workpiece that is a base material of an artificial joint component by photograft polymerization. Each of which has ultraviolet transmissivity and is along the first surface with a gap from the first surface which is at least a part of one side of the surface of the workpiece. A first cover having a first surface portion to be arranged, and a second surface that is at least a part of the surface of the workpiece opposite to the first surface, and is arranged along the second surface with a gap therebetween A second cover having a second surface portion, and a work storage portion capable of holding a solution containing a monomer injected between the work and the surface of the work in a state where the work is stored; Through the cover The ultraviolet ray irradiation unit capable of irradiating the surface side with ultraviolet rays and capable of irradiating the second surface side with ultraviolet rays through the second cover, and injected between the workpiece surface and the workpiece storage unit And a support mechanism that supports the workpiece container so that the solution is irradiated with ultraviolet rays from the ultraviolet irradiation unit.

  In this configuration, when the polymer layer is formed by irradiating the workpiece with ultraviolet rays, the workpiece accommodating portion in which the workpiece is accommodated is supported by the support mechanism. Then, in a state where the solution containing the monomer is in contact with both the first surface that is at least a part of one side of the surface of the workpiece and the second surface that is at least a part of the other side, On the other hand, ultraviolet rays are irradiated. Thereby, a polymer layer is simultaneously formed on the first surface and the second surface of the workpiece.

  That is, in this configuration, in order to form the polymer layer on both the first surface and the second surface of the workpiece, the workpiece is set only once with respect to the support mechanism. Thereby, since it is not necessary to set the workpiece twice as in the prior art, it is possible to shorten the workpiece setting time and the ultraviolet irradiation time for the support mechanism.

  Moreover, according to this structure, it is not necessary to set a workpiece | work with respect to an apparatus twice like the past. Specifically, after the first light irradiation is performed on the one side portion of the workpiece to form the polymer layer, the polymer layer is formed on the one side portion in order to perform the second light irradiation on the other side portion. It is not necessary to set the formed workpiece on the apparatus. As a result, it is possible to avoid a situation in which the polymer layer formed by the first light irradiation is damaged during the preparatory work when performing the second light irradiation.

  Therefore, according to this configuration, it is possible to irradiate light to a part that needs light irradiation on a part that needs light irradiation on one side and a part on the opposite side of the surface. In addition, it is possible to provide a film manufacturing apparatus that can shorten the irradiation time of ultraviolet rays and reduce the risk of damage to the formed polymer layer.

  (2) Preferably, the ultraviolet irradiation unit is disposed so as to face the first surface of the workpiece, which is accommodated in the workpiece accommodating portion and the workpiece accommodating portion is supported by the support mechanism, A first irradiation unit configured to irradiate the first surface side with ultraviolet rays through the first cover; and a second irradiation unit disposed so as to face the second surface of the workpiece. And a second irradiating unit that irradiates the ultraviolet ray.

  In this configuration, the first surface is irradiated with ultraviolet rays from the first irradiation unit disposed on the first surface side of the workpiece, and the ultraviolet rays from the second irradiation unit disposed on the second surface side of the workpiece are the second surface. Is irradiated. Thereby, each of the 1st surface and 2nd surface of a workpiece | work can be reliably irradiated with an ultraviolet-ray.

  (3) More preferably, the support mechanism is formed in a cylindrical shape, and the first surface of the workpiece in a state of being accommodated in the workpiece accommodating portion is directed to one side in a cylinder axis direction, and the workpiece A cylindrical main body that can accommodate the workpiece accommodating portion such that the second surface is directed to the other side in the cylindrical axial direction, and the first irradiating portion is arranged in the cylindrical axial direction of the cylindrical main body. It arrange | positions at the said one side and the said 2nd irradiation part is arrange | positioned at the said other side of the said cylinder axial direction in the said cylindrical main-body part.

  In this configuration, the workpiece accommodating portion in a state in which the workpiece is accommodated is supported by the support mechanism such that the first surface faces the first irradiation portion and the second surface faces the second irradiation portion. Thereby, the workpiece accommodating part in the state which accommodated the workpiece | work is appropriately supported by a support mechanism so that ultraviolet rays may be reliably irradiated to the 1st surface and 2nd surface of a workpiece | work.

  (4) More preferably, the film manufacturing apparatus is further provided with an ultraviolet reflecting unit that is provided inside the cylindrical main body and reflects ultraviolet rays from the ultraviolet irradiation unit to the inner side of the cylindrical main body. .

  In this configuration, the workpiece is not only directly irradiated with the ultraviolet rays irradiated by the ultraviolet irradiation unit, but also is irradiated with the ultraviolet rays reflected by the ultraviolet reflection unit. Thereby, more ultraviolet rays can be irradiated to the workpiece.

  Further, in this configuration, the ultraviolet ray reflected by the ultraviolet ray reflecting portion can be directly applied to the portion of the work that is difficult to irradiate the ultraviolet ray by the ultraviolet ray irradiating portion. For example, as an example, it is possible to efficiently apply ultraviolet rays to the portion of the spherically shaped workpiece that bulges in a horizontal plane in the cylinder axis direction in a state of being accommodated in the cylindrical main body by the ultraviolet reflecting unit.

  (5) More preferably, the said ultraviolet reflective part is formed in the cylinder shape along the internal peripheral surface of the said cylindrical main-body part.

  In this configuration, the ultraviolet rays that have entered the ultraviolet reflecting portion from the ultraviolet irradiation portion can be efficiently reflected toward the central portion of the cylindrical main body portion. Therefore, the ultraviolet rays reflected by the ultraviolet reflecting portion can be efficiently collected on the workpiece.

  (6) Preferably, the ultraviolet reflecting part is provided in the cylindrical main body part, the first reflecting part provided on the first irradiation part side from the work in a state of being accommodated in the work accommodating part, And a second reflecting portion provided on the second irradiating portion side with respect to the workpiece in a state of being accommodated in the workpiece accommodating portion in the cylindrical main body portion.

  In this configuration, the ultraviolet rays from the first irradiation unit can be reflected by the first reflection unit disposed on the first irradiation unit side with respect to the work and can be efficiently applied to the work. Furthermore, the ultraviolet rays from the second irradiating part can be reflected by the second reflecting part disposed on the second irradiating part side of the work and can be efficiently applied to the work.

  (7) Preferably, the said support mechanism further has a support part which protrudes inward from the said cylindrical main-body part, and supports the part of the outer peripheral side in the said workpiece | work accommodating part.

  In this configuration, the work accommodating portion can be set in the cylindrical main body by placing the outer peripheral side portion of the workpiece accommodating portion in a state where the workpiece is accommodated on the support portion. Therefore, the work accommodating portion can be easily set in the support mechanism.

  (8) Preferably, the film manufacturing apparatus further includes a workpiece holding unit that holds the workpiece in a state where the gap is formed between the first surface portion, the second surface portion, and the workpiece.

  With this configuration, it is possible to form a gap between the first surface portion and the second surface portion into which the monomer-containing solution is injected and the workpiece, and to hold the workpiece in the workpiece accommodating portion in a state where the gap is formed. .

  (9) More preferably, the work holding part is provided as a separate member from the first cover and the second cover.

  According to this configuration, after the polymer layer is formed, the first cover and the second cover can be removed from the work while the work is held by the work holding unit. Thereby, for example, an operator can hold the work holding part and handle the work, or the work holding part can be placed on a work table or the like so that the polymer layer does not come into contact with anything else. That is, according to this structure, when handling a workpiece | work, the risk that a polymer layer will be damaged can be reduced.

  (10) Preferably, the said work holding part is comprised with the material which has an ultraviolet-ray transmittance.

  According to this configuration, since ultraviolet rays are irradiated to the workpiece via the workpiece holding unit, attenuation of the ultraviolet rays irradiated to the workpiece can be suppressed.

  (11) Preferably, the work holding part is formed with an injection hole for injecting the solution.

  According to this configuration, since the solution can be injected into the gap between the workpiece accommodating portion and the workpiece via the injection hole, the solution can be easily supplied to the gap.

  According to the present invention, it is possible to shorten the work setting time and the ultraviolet irradiation time for the apparatus with respect to a work that requires light irradiation on one side and the other side of the surface, and the formed polymer. The risk of layer damage can be reduced.

It is a figure for demonstrating the structure of the artificial hip joint which has a liner with which the film | membrane manufacturing apparatus which concerns on this embodiment is used, Comprising: It is sectional drawing of this artificial hip joint vicinity in the state in which the artificial hip joint was attached to the patient. It is a figure for demonstrating the detailed shape of the liner shown in FIG. 1, Comprising: (A) is a top view, (B) is sectional drawing in the IIB-IIB line | wire of FIG. 2 (A). It is a perspective view showing the outline outline of the membrane manufacture device concerning this embodiment. FIG. 4 is a schematic longitudinal sectional view showing the internal structure of the film manufacturing apparatus shown in FIG. 3, and shows a state in which a workpiece to be film manufacturing is set. It is a top view of one irradiation part of the ultraviolet irradiation parts of the film | membrane manufacturing apparatus shown in FIG. It is a figure which expands and shows a part in FIG. 4, Comprising: It is an enlarged view inside a support mechanism. It is a flowchart which shows the process at the time of producing | generating a polymer layer on the surface of a workpiece | work using the film | membrane manufacturing apparatus shown in FIG. It is a schematic longitudinal cross-sectional view which shows the internal structure of the film | membrane manufacturing apparatus which concerns on a modification, Comprising: It is a figure of the state in which the workpiece | work used as film | membrane manufacture was set. It is a schematic longitudinal cross-sectional view which shows the internal structure of the film | membrane manufacturing apparatus which concerns on a modification, Comprising: It is a figure of the state in which the workpiece | work used as film | membrane manufacture was set.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention can be widely applied to a membrane manufacturing apparatus used for manufacturing an artificial joint component. In the following, first, members suitable for film production in the film production apparatus 10 according to the present embodiment will be described, and then the film production apparatus 10 will be described.

[Overall configuration of artificial hip joint]
FIG. 1 is a diagram for explaining the configuration of the artificial hip joint 1, and is a schematic diagram showing the artificial hip joint 1 installed in a patient together with a part of the pelvis 101 and a part of the femur 102. As shown in FIG. 1, the artificial hip joint 1 is provided as an artificial joint for allowing relative displacement of the femur 102 with respect to the acetabulum 101 a of the pelvis 101. In addition, about the shape of each component (shell 2, liner 3, and head ball 5 etc.) of the artificial hip joint 1 shown in FIG. 1, it has shown typically and it abbreviate | omitted and showed the detailed part.

  The artificial hip joint 1 includes a shell 2 installed on the acetabulum 101 a of the pelvis 100, a liner 3 accommodated in the shell 2, a stem 4 installed on the femur 102, and a stem 4 fixed to the liner 3. The bone head ball 5 is provided.

  The shell 2 is a member having a depression formed in a cup shape, and is fixed to the acetabulum 101 a of the pelvis 101. The inner peripheral surface 2a of the shell 2 is formed in a substantially spherical shape. A liner 3 is accommodated in the shell 2.

  The liner 3 is an artificial joint component having a depression formed in a cup shape, and is an example of a member suitable for film production in the film production apparatus 10 according to the present embodiment. The liner 3 has an inner peripheral surface 3b as a first surface which is a portion on one side of the surface of the liner 3, and an outer periphery as a second surface which is a portion opposite to the inner peripheral surface 3b on the surface of the liner 3. Both surfaces 3a are formed in a substantially spherical shape. The liner 3 is accommodated in the shell 2 so that the outer peripheral surface 3 a can slide relative to the inner peripheral surface 2 a of the shell 2. Further, the head 3 is accommodated in the liner 3 so that the outer peripheral surface 5a of the head ball 5 can slide relative to the inner peripheral surface 3b. That is, both the outer peripheral surface 3a which is one portion on the surface of the liner 3 and the inner peripheral surface 3b which is the opposite portion constitute a sliding surface which slides relative to other members. . The detailed configuration of the liner 3 will be described later.

  The head ball 5 is formed in a slightly larger shape than the hemisphere. Specifically, the head ball 5 has a shape in which a part of a spherical member is cut off by a flat surface, and the outer peripheral edge of the cut part is formed in the spherical shape. It is formed in a shape that is smaller than the diameter of the member. Thereby, the surface of the head ball 5 includes a spherical surface (outer peripheral surface 5a) that covers a wider range than the hemispherical surface and a flat surface 5b constituted by a flat surface. In the head ball 5, the stem 4 is fixed to the portion on the flat surface 5b side, and the portion on the outer peripheral surface 5a side is accommodated in the liner 3.

  Further, as the material of the bone head ball 5, metal materials such as cobalt chromium alloy and stainless steel, polymer materials such as ultra high molecular weight polyethylene (hereinafter referred to as UHMWPE), PEEK (polyether ether ketone), and alumina, zirconia and the like A ceramic material can be exemplified.

  The stem 4 is provided as a portion that supports the head ball 5 and is fixed to the femur 102 of the patient. Examples of the material of the stem 4 include metal materials such as titanium, a titanium alloy, a cobalt chromium alloy, and stainless steel. The stem 4 is formed in an elongated rod shape (stem shape), and has a shape in which a middle portion of the stem 4 is bent. The stem 4 includes a stem body 6 and a neck portion 7.

  The stem body 6 is inserted into a hole formed in the medullary cavity portion 102 a of the femur 102 and is fixed to the femur 102. A neck portion 7 extends from the stem body 6. The neck portion 7 extends in a direction inclined with respect to the longitudinal direction of the stem 4. A bone head ball 5 is fixed to the neck portion 7.

  With the above configuration, the head ball 5 slides on the inner peripheral surface 3 b of the liner 3, and the outer peripheral surface 3 a of the liner 3 slides on the inner peripheral surface 2 a of the shell 2. Thereby, the femur 102 is displaced with respect to the acetabulum 101a.

[Detailed configuration of liner]
FIG. 2 is a diagram illustrating details of the liner 3 on which a polymer layer is formed by the film manufacturing apparatus 10 according to the present embodiment. The liner 3 has a cup portion 15 and a cylindrical portion 16 that are integrally formed. The cup portion 15 is provided as a cup-shaped portion formed in a substantially hemispherical shape having a depression. A cylindrical portion 16 is erected in an opening formed on the recessed portion side of the cup portion 15. The cylindrical portion 16 is formed in a cylindrical shape extending from the inner peripheral edge portion of the opening of the cup portion 15 toward the outside of the cup portion 15.

  The liner 3 is configured to be held by a work holding unit 50 described later in detail. The cylinder portion 16 is provided as the held portion 17 held by the work holding portion 50.

  The liner 3 has a base material 8 and a polymer layer 9. The liner 3 is formed by generating a film (polymer layer 9) on the surface of the base material 8 by the film manufacturing apparatus 10. That is, the base material 8 is formed in substantially the same shape as the liner 3. Examples of the material of the base material 8 include at least one of a synthetic resin, a metal material, and a ceramic material. Examples of the synthetic resin include PEEK and UHMWPE. UHMWPE is excellent in mechanical properties such as wear resistance and deformation resistance among polymer materials, and is suitable as a base material 8. UHMWPE has higher wear resistance as the molecular weight increases. Therefore, it is preferable to use UHMWPE having a molecular weight of at least 1 million g / mol, preferably at least 3 million g / mol. Further, as the base material 8, a cross-linked polyethylene obtained by crosslinking UHMWPE may be used.

  The polymer layer 9 is formed integrally with the base material 8 and is provided as a thin film constituting a portion excluding a predetermined portion on the surface of the liner 3. Specifically, the polymer layer 9 is formed on a portion of the surface of the base material 8 excluding the outer peripheral surface 16a of the cylindrical portion 16 as shown in FIG. The polymer layer 9 constitutes the sliding surfaces (the outer peripheral surface 3a and the inner peripheral surface 3b) of the liner 3. The thickness of the polymer layer 9 is about several nm to several hundred nm. In FIG. 2B, the thickness of the polymer layer 9 is exaggerated as compared with the actual thickness. The polymer layer 9 is formed by irradiating the solution with a monomer solution having a phosphorylcholine group in contact with the surface of the base material 8 with ultraviolet rays.

[Configuration of membrane production equipment]
FIG. 3 is a perspective view showing a schematic outer shape of the film manufacturing apparatus 10 according to the present embodiment, and FIG. 4 is a schematic vertical sectional view showing an internal structure of the film manufacturing apparatus main body 20 of the film manufacturing apparatus 10. The base material 8 as the workpiece | work 8 used as the object of film forming is the figure of the state set. The film manufacturing apparatus 10 according to the present embodiment is configured such that a predetermined solution 23 in contact with the surface of the workpiece 8 is irradiated with ultraviolet rays. As a result, a photograft polymerization reaction occurs, and a polymer layer 9 is formed on the surface of the workpiece 8.

  As shown in FIG. 3, the film manufacturing apparatus 10 includes a film manufacturing apparatus main body 20 and a power supply device 21. The membrane manufacturing apparatus main body 20 is configured to be supplied with power from the power supply device 21. The power supply device 21 includes a housing 21a, a power circuit (not shown) accommodated in the housing 21a, and an adjustment member 21b connected to the power circuit. The brightness of an ultraviolet LED (Light Emitting Diode) element 36, which will be described later, is changed by operating the adjustment member 21b by the operator. The power supply circuit of the power supply device 21 and the ultraviolet LED element 36 of the membrane manufacturing apparatus main body 20 are electrically connected via a cable 22 or the like.

  The film manufacturing apparatus main body 20 as a whole is formed in a columnar shape extending vertically, and is formed in a columnar shape in this embodiment. In the following description, the arrangement of each member when the film manufacturing apparatus body 20 irradiates the base material 8 with ultraviolet rays will be described as a reference. In the following, for convenience of explanation, in each drawing, the direction indicated by the arrow indicated as “up” is referred to as “upper or upper”, and the direction indicated by the arrow indicated as “lower” is referred to as “lower or lower”.

  The film manufacturing apparatus main body 20 includes a support mechanism 25, an ultraviolet irradiation unit 30, a work storage unit 40, a heater 53, and an ultraviolet reflection unit 55.

  The support mechanism 25 is configured to receive the work accommodating portion 40 therein and support the work accommodating portion 40. As shown in FIG. 4, the support mechanism 25 includes a cylindrical main body portion 26 and an inner flange portion 27. The cylindrical main body portion 26 is formed in a substantially cylindrical shape extending in the vertical direction. A ring-shaped inner flange portion 27 extending inward from the inner peripheral surface of the cylindrical main body portion 26 is formed at the center portion in the vertical direction inside the cylindrical main body portion 26. The inner flange portion 27 is provided as a support portion that supports the work accommodating portion 40. The openings in the tube axis direction of the tube body 26 are all covered with an acrylic plate 28. The acrylic plate 28 is used for efficiently maintaining the temperature of the work accommodating portion 40. The acrylic plate 28 can be omitted.

  The ultraviolet irradiation unit 30 is for irradiating the workpiece 8 in the workpiece accommodating unit 40 accommodated in the support mechanism 25 with ultraviolet rays. The ultraviolet irradiation unit 30 has two irradiation units. Specifically, the ultraviolet irradiation unit 30 is disposed above the support mechanism 25, and a first irradiation unit 31 that irradiates ultraviolet light into the support mechanism 25 via the upper acrylic plate 28, and below the support mechanism 25. And a second irradiation unit 32 configured to irradiate ultraviolet rays into the support mechanism 25 via the lower acrylic plate 28. As will be described in detail later, the first irradiation unit 31 is opposed to the inner peripheral surface 3b (first surface) of the workpiece 8 accommodated in the workpiece accommodating portion 40 and supported by the support mechanism. Are arranged to be. On the other hand, as will be described in detail later, the second irradiation unit 32 is disposed so as to face the outer peripheral surface 3a (second surface) of the workpiece 8 in the above-described state.

  FIG. 5 is a plan view of the first irradiation unit 31. In addition, the 1st irradiation part 31 and the 2nd irradiation part 32 are the same shapes, and only arrangement | positioning with respect to the support mechanism 25 differs. Therefore, only the structure of the first irradiation unit 31 will be described below, and the description of the structure of the second irradiation unit 32 will be omitted.

  As shown in FIGS. 4 and 5, the first irradiation unit 31 includes an LED holder 33 and a plurality (six in this embodiment) of ultraviolet LED elements 36 attached to the LED holder 33.

  The LED holder 33 has a main body portion 33a formed in a substantially cylindrical shape extending in the vertical direction, and a cylindrical portion 33b extending downward from the outer peripheral edge portion on the lower surface of the main body portion 33a, and these are integrally formed. Yes. The LED holder 33 is formed using a synthetic resin, an aluminum alloy, or the like. A stepped portion 33c formed in an annular shape is formed in the lower portion of the cylindrical portion 33b. An acrylic plate 28 is held between the stepped portion 33 c and the upper end portion of the cylindrical main body portion 26. A plurality of fins 37 are formed on the outer peripheral surface of the LED holder 33. The plurality of fins 37 are formed so as to extend in the vertical direction, and are arranged so as to be equidistant from each other in the circumferential direction. These fins 37 can efficiently release the heat of the ultraviolet LED element 36 to the outside.

  The lower part of the main body 33a is provided as a pedestal 34 to which a substrate 35 on which the ultraviolet LED element 36 is mounted is attached. A plurality (six in this embodiment) of substrates 35 are attached to the lower surface of the pedestal portion 34. As shown in FIG. 5, one of the six substrates 35 is attached to the central portion of the pedestal portion 34. The remaining five of the six substrates 35 are attached to the radially outer portion of the pedestal portion 34 so as to be equally spaced in the circumferential direction. A cable (not shown) that is electrically connected to the cable 22 is connected to each substrate 35. Thereby, the electric power from the power supply device 21 is supplied to each ultraviolet LED element 36 via the cable 22, the substrate 35, and the like.

  Moreover, in this embodiment, each board | substrate 35 is comprised so that attachment or detachment with respect to the base part 34 is carried out, and, thereby, the position of each ultraviolet LED element 36 with respect to the workpiece | work 8 can be changed. The attachment method of each board | substrate 35 to the base part 34 is not specifically limited, For example, it attaches using the screw member which is not shown in figure.

  Each ultraviolet LED element 36 is mounted on the center of the corresponding substrate 35. Each ultraviolet LED element 36 radiates ultraviolet rays by receiving electric power supplied from the power supply device 21. The wavelength of light emitted from each ultraviolet LED element 36 is, for example, about 300 nm to 400 nm, and preferably 315 nm to 400 nm. If said wavelength is 315 nm or more, it can suppress that the ultraviolet-ray of the UV-B area | region which is unnecessary for photograft polymerization is radiated | emitted from each ultraviolet LED element. As a result, it is possible to avoid deterioration of equipment caused by receiving ultraviolet rays in the UV-B region.

  FIG. 6 is an enlarged view of a part of FIG. 4, and is an enlarged view of the inside of the support mechanism 25. The work accommodating part 40 has two covers 41 and 46 and a work holding part 50. These are configured as separate members from each other by a material (for example, acrylic resin) having ultraviolet transparency. The workpiece accommodating portion 40 is configured to accommodate the workpiece 8 therein.

  The two cover members have a first cover 41 and a second cover 46.

  The 1st cover 41 is formed in the shape where the center part in the substantially disk-shaped plate-shaped member swells. Specifically, the first cover 41 includes a first cover side annular portion 42 formed in a ring shape, and a first cover side that bulges downward from the inner peripheral edge portion of the first cover side annular portion 42. It has a bulging portion 43 and these are integrally formed. The 1st cover 41 is formed so that the thickness may become substantially uniform over the whole.

  The first cover side bulging portion 43 has a cylindrical portion 44 formed in a cylindrical shape and a hemispherical portion 45 formed in a substantially hemispherical shape, and these are integrally formed. The cylindrical portion 44 is formed so as to extend downward from the inner peripheral edge portion of the first cover side annular portion 42. The hemispherical portion 45 is provided as a substantially hemispherical portion that bulges downward from the tip of the cylindrical portion 44. As for the outer peripheral surface 43a (first surface portion) of the first cover side bulging portion 43, the work 8 is accommodated in the work accommodating portion 40, and the outer peripheral surface 43a forms a slight gap G1 with the inner peripheral surface 3b of the work 8. In the state, the curvature G1 is set to be substantially uniform.

  The 2nd cover 46 is formed in the shape where the center part in a substantially disk-shaped plate-shaped member swells. Specifically, the second cover 46 includes a second cover-side annular portion 47 formed in a ring shape, and a second cover-side bulge that bulges from the inner peripheral edge of the second cover-side annular portion 47. Part 48 and these are integrally formed. The second cover 46 is formed so that the thickness is substantially the same as that of the first cover 41 and is substantially uniform throughout.

  The second cover side annular part 47 is formed so that the outer diameter and inner diameter thereof are larger than the outer diameter and inner diameter of the first cover side annular part 42, respectively. The outer peripheral edge portion of the second cover side annular portion 47 is formed in such a size as to be supported on the upper surface of the inner flange portion 27 of the cylindrical main body portion 26. Specifically, the outer diameter of the second cover side annular portion 47 is formed to be slightly smaller than the inner diameter of the cylindrical main body portion 26.

  In addition, a concave portion 47a that is recessed from the outer portion is formed in the radially inner portion of the upper surface of the second cover side annular portion 47 (the surface opposite to the second cover side bulging portion 48). Yes. The outer peripheral edge of the recess 47a is formed in a circular shape in plan view. As shown in FIG. 6, the concave portion 47 a is formed so that a work holding portion 50, which will be described later in detail, is fitted.

  The second cover side bulging portion 48 is formed in a hemispherical shape. The inner peripheral surface 48a (second surface portion) of the second cover side bulging portion 48 is such that the work 8 is accommodated in the work accommodating portion 40, and the inner peripheral surface 48a forms a slight gap G2 with the outer peripheral surface 3a of the work 8. In such a state, the curvature is set such that the gap G2 is substantially uniform.

  The work holding part 50 is provided as a member formed in a flat cylindrical shape having a predetermined wall thickness. The work holding portion 50 is formed so that the outer peripheral surface 16a of the cylindrical portion 16 of the work 8 is fitted and held on the inner peripheral surface 50a. Specifically, the inner diameter of the work holding part 50 is formed to be slightly smaller than the outer diameter of the cylindrical part 16. Thereby, since the cylinder part 16 is press-fitted into the work holding part 50, the work 8 can be held by the work holding part 50.

  As shown in FIG. 6, the work holding unit 50 is held so as to be sandwiched between the first cover 41 and the second cover 46 in a state where the work 8 is set in the work storage unit 40. Thereby, the solution 23 injected into the gap G1 and the gap G2 is held in the gaps G1 and G2 without leaking to the outside of the work storage unit 40.

  The work holding part 50 is formed with two through holes 51, 51 penetrating in the axial direction of the work holding part 50. One through hole 51 functions as an injection hole 51a for injecting the solution 23 into the gap G2. At this time, the other through hole 51 functions as an air vent hole 51b of the gap G2.

  The heater 53 is for accelerating photograft polymerization by heating the solution 23 in contact with the workpiece 8. That is, the heater 53 constitutes a heating mechanism for heating the solution 23. The heater 53 is configured by a ribbon heater, for example, and is wound around the outer peripheral surface of the support mechanism 25. The heat generated by the heater 53 is transmitted to the solution 23 through the support mechanism 25 and the like, and heats the solution 23. Thereby, the solution 23 can be made into the temperature suitable for photograft polymerization reaction.

  The ultraviolet reflection part 55 is formed in a substantially cylindrical shape along the inner peripheral surface of the cylindrical main body part 26, and reflects the ultraviolet rays irradiated by the ultraviolet irradiation part 30 to the inside of the cylindrical main body part 26. In the present embodiment, the ultraviolet reflecting unit 55 includes two reflecting mirrors 56 and 57. Specifically, the ultraviolet reflecting unit 55 includes a first reflecting mirror 56 as a first reflecting unit disposed on the first irradiation unit 31 side (upper side in FIG. 4) in the cylindrical axis direction of the cylindrical main body 26, And a second reflecting mirror 57 serving as a second reflecting portion disposed on the second irradiating portion 32 side (the lower side in FIG. 4) in the tube axis direction. Each of the reflecting mirrors 56 and 57 is formed, for example, by mirror-finishing the inner peripheral surface of a cylindrical metal plate.

[Polymer layer generation process]
FIG. 7 is a flowchart showing a process for generating the polymer layer 9 on the surface of the workpiece 8 using the film manufacturing apparatus 10 according to the present embodiment. A process for generating the polymer layer 9 on the surface of the workpiece 8 will be described with reference to FIG.

  When forming the polymer layer 9 on the workpiece 8, first, the workpiece 8 and the film manufacturing apparatus 10 are prepared (step S1). Next, in step S <b> 2, the cylindrical portion 16 of the workpiece 8 is press-fitted into the inner peripheral surface 50 a of the workpiece holding portion 50, so that the workpiece holding portion 50 is mounted on the workpiece 8.

  Next, in step S <b> 3, the workpiece holding unit 50 to which the workpiece 8 is mounted is set on the second cover 46 set on the inner flange portion 27 of the support mechanism 25. Specifically, the lower part of the work holding part 50 (the part of the work 8 on the cup part 15 side) is the first part so that the cup part 15 of the work 8 is accommodated in the second cover side bulging part 48. 2 is fitted into the recess 47 a of the cover 46. Accordingly, the workpiece 8 is set with respect to the second cover 46 in a state where the gap G <b> 2 is formed between the workpiece 8 and the second cover 46.

  Next, in step S4, the solution 23 is supplied. Specifically, the solution is supplied into the gap G <b> 2 through one through hole 51 of the workpiece holding unit 50, while a predetermined amount of the solution 23 is formed in a depressed portion (the portion on the inner peripheral surface 3 b side) of the workpiece 8. Is supplied. As a result, the gap G2 is filled with the solution 23.

  Next, in step S5, the first cover 41 is attached. Specifically, the first cover side annular part 42 is placed on the work holding part 50 so that the first cover side bulging part 43 is accommodated in the cup part 15 of the work 8. Thereby, the workpiece 8 is accommodated in the workpiece accommodating portion 40, and the workpiece accommodating portion 40 in a state where the workpiece 8 is accommodated is supported by the support mechanism 25. Further, when the first cover 41 is attached as described above, the solution 23 supplied to the inner peripheral surface 3b side of the workpiece 8 is in a state of being distributed to the gap G1 by surface tension.

  Then, after the two irradiation units 31 and 32 are attached to the support mechanism 25 in step S6, ultraviolet rays are irradiated by these two irradiation units 31 and 32 in step S7. At this time, the ultraviolet rays irradiated from the first irradiation unit 31 not only directly reach the surface of the workpiece 8 (mainly the inner peripheral surface 3b of the workpiece 8) but also the ultraviolet reflection unit 55 (mainly the first reflecting mirror). 56) to reach the surface of the workpiece 8. On the other hand, the ultraviolet rays irradiated from the second irradiation unit 32 not only directly reach the surface of the workpiece 8 (mainly the outer peripheral surface 3a of the workpiece 8), but also the ultraviolet reflection unit 55 (mainly the second reflecting mirror 57). And reaches the surface of the work 8. As a result, a graft polymerization reaction occurs in the monomer contained in the solution 23. As a result, the polymer layer 9 is formed on the surface of the workpiece 8.

  Note that the heater 53 is turned on before the light irradiation is performed as described above. Thereby, since the heat generated in the heater 53 is transmitted to the solution 23 via the support mechanism 25 and the like, the graft polymerization reaction on the surface portion of the workpiece 8 can be promoted.

  The workpiece 8 on which the polymer layer 9 is formed as described above is taken out from the support mechanism 25 (step S8). Specifically, after the first cover 41 is removed from the work 8, the work holding part 50 in a state in which the work 8 is fitted is held by an operator and taken out from the cylindrical main body part 26.

[effect]
As described above, in the film manufacturing apparatus 10 according to the present embodiment, when the polymer layer 9 is formed by irradiating the workpiece 8 with ultraviolet rays, the workpiece accommodating portion 40 in the state in which the workpiece 8 is accommodated is supported. Supported by mechanism 25. Then, the solution 23 containing the monomer is in contact with both the inner peripheral surface 3b which is one side portion of the surface of the work 8 and the outer peripheral surface 3a on the other side, and the solution 23 is irradiated with ultraviolet rays. Is done. As a result, the polymer layer 9 is simultaneously formed on the outer peripheral surface 3 a and the inner peripheral surface 3 b of the workpiece 8.

  That is, in the film manufacturing apparatus 10, the work 8 may be set to the support mechanism 25 only once in order to form the polymer layer 9 on both the outer peripheral surface 3 a and the inner peripheral surface 3 b of the work 8. Thereby, since it is not necessary to set the workpiece twice as in the prior art, the workpiece setting time and the ultraviolet irradiation time for the support mechanism 25 can be shortened.

  Moreover, in the film manufacturing apparatus 10, it is not necessary to set the workpiece to the apparatus twice as in the conventional case. Specifically, after the first light irradiation is performed on the one side portion of the workpiece to form the polymer layer, the polymer layer is formed on the one side portion in order to perform the second light irradiation on the other side portion. It is not necessary to set the formed workpiece on the apparatus. As a result, it is possible to avoid a situation in which the polymer layer formed by the first light irradiation is damaged during the preparatory work when performing the second light irradiation.

  Therefore, the film manufacturing apparatus 10 can irradiate the work 8 that requires light irradiation on the outer peripheral surface 3a and the inner peripheral surface 3b with respect to the portions (outer peripheral surface 3a and inner peripheral surface 3b) that require light irradiation. In addition, it is possible to provide the film manufacturing apparatus 10 that can shorten the set time of the work 8 and the irradiation time of the ultraviolet rays with respect to the support mechanism 25 and reduce the risk of damage to the formed polymer layer 9.

  In the film manufacturing apparatus 10, the inner peripheral surface 3 b is irradiated with ultraviolet rays from the first irradiation unit 31 disposed on the inner peripheral surface 3 b side of the work 8, and the second is disposed on the outer peripheral surface 3 a side of the work 8. Ultraviolet rays from the irradiation unit 32 are applied to the outer peripheral surface 3a. Thereby, the outer peripheral surface 3a and the inner peripheral surface 3b of the workpiece 8 can be reliably irradiated with ultraviolet rays.

  Further, in the film manufacturing apparatus 10, the workpiece storage unit 40 in the state of storing the workpiece 8 has the inner peripheral surface 3 b directed to the first irradiation unit 31 side and the outer peripheral surface 3 a directed to the second irradiation unit 32 side. It is supported by the support mechanism 25. Thereby, the work accommodating part 40 in the state in which the work 8 is accommodated is appropriately supported by the support mechanism 25 so that the outer peripheral surface 3a and the inner peripheral surface 3b of the work 8 are reliably irradiated with ultraviolet rays.

  Further, in the film manufacturing apparatus 10, the work 8 is not only directly irradiated with the ultraviolet rays irradiated by the ultraviolet irradiation unit 30, but also is irradiated with the ultraviolet rays reflected by the ultraviolet reflection unit 55. Thereby, more ultraviolet rays can be irradiated to the workpiece 8.

  Further, in the film manufacturing apparatus 10, the part of the workpiece that is not easily irradiated with ultraviolet rays directly by the ultraviolet irradiation unit 30, specifically, the part near the cylindrical part 16 on the outer peripheral surface of the cup part 15 of the workpiece 8, Ultraviolet rays can be efficiently applied by the ultraviolet reflecting portion 55.

  Further, in the film manufacturing apparatus 10, since the ultraviolet reflecting part 55 is formed in a cylindrical shape along the inner peripheral surface of the cylindrical main body part 26, the ultraviolet light incident on the ultraviolet reflecting part 55 from the ultraviolet irradiating part 30 is transferred to the cylinder. Can be efficiently reflected toward the central portion of the main body portion 26. Therefore, the ultraviolet rays reflected by the ultraviolet reflecting portion 55 can be efficiently collected on the workpiece 8.

  Further, in the film manufacturing apparatus 10, the ultraviolet rays from the first irradiation unit 31 are reflected by the first reflecting mirror 56 disposed on the first irradiation unit 31 side with respect to the workpiece 8, and efficiently with respect to the workpiece 8. You can guess. Furthermore, the ultraviolet rays from the second irradiation unit 32 can be reflected by the second reflecting mirror 57 disposed on the second irradiation unit 32 side with respect to the workpiece 8 and efficiently applied to the workpiece 8.

  Moreover, in the film manufacturing apparatus 10, the ultraviolet reflecting part 55 having the first reflecting mirror 56 and the second reflecting mirror 57 is formed by mirror-finishing the inner peripheral surface of a cylindrical metal plate. Thereby, the ultraviolet reflective part 55 can be formed easily.

  Further, in the film manufacturing apparatus 10, the work accommodating portion 40 can be set in the cylindrical main body portion 26 by placing the outer peripheral side portion of the workpiece accommodating portion 40 in a state where the workpiece 8 is accommodated in the inner flange portion 27. Therefore, the work accommodating portion 40 can be easily set in the support mechanism 25.

  Further, the film manufacturing apparatus 10 can form gaps G1 and G2 between the outer peripheral surface 3a and the inner peripheral surface 3b of the work 8 into which the monomer-containing solution 23 is injected and the work 8, and the gaps G1 and G2. The workpiece 8 can be held in the workpiece accommodating portion 40 in a state where the workpiece has been formed.

  In the film manufacturing apparatus 10, after the polymer layer 9 is formed, the first cover 41 and the second cover 46 can be removed from the work 8 while the work 8 is held by the work holding unit 50. Thereby, for example, an operator can hold the workpiece holding unit 50 to handle the workpiece 8, or the workpiece holding unit 50 can be placed on a work table or the like so that the polymer layer 9 does not come into contact with anything else. . That is, according to this structure, when handling the workpiece | work 8, the risk that the polymer layer 9 will be damaged can be reduced.

  Further, in the film manufacturing apparatus 10, ultraviolet rays are irradiated onto the workpiece 8 through the workpiece holding unit 50 having ultraviolet transparency, so that attenuation of the ultraviolet rays irradiated to the workpiece 8 can be suppressed.

  Moreover, in the film manufacturing apparatus 10, since the solution 23 can be injected into the gap G2 between the workpiece accommodating portion 40 and the workpiece 8 through the injection hole 51a, the solution 23 can be easily supplied to the gap G1.

  Further, in the film manufacturing apparatus 10, two through holes 51, 51 are formed in the work holding unit 50. Thus, when the solution 23 is injected from one through hole 51 that functions as the injection hole 51a of the solution 23, the air in the gap G2 is discharged from the other through hole 51 that functions as the air escape hole 51b of the gap G2. . Therefore, the solution 23 can be smoothly supplied to the gap G2.

  In the film manufacturing apparatus 10, the heater 53 is turned on before the solution 23 is irradiated with light. Thereby, since the temperature of the solution 23 can be raised, the graft polymerization reaction in the surface part of the workpiece | work 8 can be accelerated | stimulated.

  Further, in the film manufacturing apparatus 10, the openings on both sides in the cylindrical axis direction of the cylindrical main body 26 are respectively covered with the acrylic plate 28. Thereby, the heat generated by the heater 53 and transmitted to the solution 23 can be suppressed from being released through the opening, so that the graft polymerization reaction on the surface portion of the workpiece 8 can be further promoted.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible as long as they are described in the claims. For example, the following modifications may be made.

[Modification]
(1) In the above-described embodiment, the liner 3 of the artificial hip joint 1 has been described as an example of the workpiece 8 to be membrane-manufactured. However, the present invention is not limited to this example. It can also be used for a bone head ball 5 (artificial joint component). In the film manufacturing apparatus 11 according to this modification, the polymer layer 9 is formed on the outer peripheral surface 5a of the workpiece 8a of the bone head ball 5.

  FIG. 8 is a schematic longitudinal sectional view showing the internal structure of the membrane manufacturing apparatus 11 according to the modification, and is a diagram showing a state in which the workpiece 8a of the bone head ball 5 to be membrane manufactured is set. In the film manufacturing apparatus 11 according to the present modification, the shape of the work accommodating portion is greatly different from that of the film manufacturing apparatus 10 according to the above embodiment. In the following, differences from the above embodiment will be mainly described, and the description of the same configuration as the above embodiment will be omitted by giving the same reference numerals in the drawings or by quoting the same reference numerals. To do.

  The workpiece 8a of the bone head ball 5 to be film-formed by the membrane production apparatus 11 according to this modification is formed in substantially the same shape as the bone head ball 5.

  Specifically, the workpiece 8a of the head ball 5 has a shape in which a part of a spherical member is cut out by a flat surface, and the outer peripheral edge of the cut-out part has the spherical shape. It is formed in a shape that is smaller than the diameter of the formed member. Thereby, the surface of the workpiece 8a includes a spherical surface (outer peripheral surface 5a) that covers a wider range than the hemispherical surface and a flat surface 5b constituted by a flat surface. A hole 5c into which the stem 4 (see FIG. 1) is inserted is formed at the center of the portion of the workpiece 8a on the flat surface 5b side.

  As shown in FIG. 8, the bone ball 5 has a portion on the outer peripheral surface 5a side directed downward (second irradiation unit 32 side), and a portion on the flat surface 5b side directed upward (first irradiation unit 31 side). Thus, it is accommodated in the support mechanism 25. In this state, the outer peripheral surface 5a (spherical surface) of the workpiece 8a has a first surface 5d which is at least a part of one side part and a second surface 5e which is a part on the other side. The first surface 5d is a portion of the outer peripheral surface 5a that faces upward (a portion of the outer peripheral surface 5a that is above the horizontal plane P that passes through the center point of the workpiece 8a). Moreover, the 2nd surface 5e is a part (a part below the horizontal surface P among the outer peripheral surfaces 5a) toward the downward side in the outer peripheral surface 5a.

  The work accommodating part 60 of this modification has two covers (a first cover 61 and a second cover 66) and a work holding part 70. As in the case of the above-described embodiment, these are configured as separate members from each other by a material having ultraviolet transparency (for example, acrylic resin), and are configured so as to accommodate the workpiece 8a therein.

  The first cover 61 has a flat portion 62 and an outer wall portion 63, which are integrally formed. Inside the first cover 61, a portion of the workpiece 8a on the flat surface 5b side is accommodated.

  The flat part 62 is formed in a substantially disc shape. A through hole 62 a that penetrates the flat portion 62 in the vertical direction is formed in the central portion of the flat portion 62. The flat part 62 is disposed so as to be in close contact with the flat surface 5b of the workpiece 8a.

  The outer wall portion 63 is formed in a substantially cylindrical shape extending from the flat portion 62 while slightly expanding downward. The inner peripheral surface 63a (first surface portion) of the outer wall 63 has a gap G3 in a state where the workpiece 8a is accommodated in the workpiece accommodating portion 60 and the inner peripheral surface 63a forms a slight gap G3 with the first surface 5d. Is set to a curvature that is substantially uniform.

  The second cover 66 is formed in a hat shape having a collar on the entire circumference. The second cover 66 has a flange portion 67 and a hemispherical portion 68, which are integrally formed. The second cover 66 is supported in the support mechanism 25 by the outer peripheral edge portion of the flange portion 67 being supported by the inner flange portion 27. A portion of the work 8a on the outer peripheral surface 5a side is accommodated in the hemispherical surface portion 68 of the second cover 66.

  The collar portion 67 is formed to extend downward while constricting from the outer peripheral side toward the inner peripheral side. The hemispherical portion 68 is formed in a substantially hemispherical shape that bulges downward from the inner peripheral edge of the flange 67. The inner peripheral surface 68a (second surface portion) of the hemispherical surface portion 68 is such that the workpiece 8a is accommodated in the workpiece accommodating portion 60, and the inner peripheral surface 68a is spaced from the second surface 5e of the workpiece 8a by a slight gap G4. The curvature is set such that the gap G4 is substantially uniform.

  The work holding part 70 is formed in a substantially rod shape. A portion 71 on the distal end side of the work holding part 70 is press-fitted into the hole 5c of the work 8a through the through hole 62a of the first cover 61. Thereby, the workpiece 8a can be held by the workpiece holding unit 70. Further, the proximal end portion 72 of the work holding unit 70 is fixed to the upper acrylic plate 28, for example. Thereby, the workpiece 8a is supported by the first irradiation unit 31 attached to the support mechanism 25.

  In the work accommodating portion 60 according to this modification, the first cover 61 is set with respect to the second cover 66 supported by the inner flange portion 27. On the other hand, the workpiece 8a is held with respect to the support mechanism 25 via the workpiece holding portion 70 and the like in a state where gaps G3 and G4 are formed between the covers 61 and 66.

  In the film manufacturing apparatus 11 according to the present modification, the outer peripheral surface 5a (first surface) of the workpiece 8a is irradiated with ultraviolet rays from the ultraviolet irradiation unit 30 in a state where the solution 23 is injected into the gaps G3 and G4. A polymer layer is formed on the surface 5d and the second surface 5e).

[effect]
As described above, also in the film manufacturing apparatus 11 according to this modification, a polymer layer can be simultaneously formed in a portion where light irradiation is necessary on the surface of the workpiece 8a, as in the case of the above embodiment. Specifically, in the film manufacturing apparatus 11 according to this modification, the first surface 5d that is at least a part of one side of the outer peripheral surface 5a of the workpiece 8a, and the second surface 5e that is a part on the other side For both,, a polymer layer can be formed at a time. Thereby, since it is not necessary to set the work twice as in the prior art, the work setting time and the ultraviolet irradiation time with respect to the support mechanism 25 can be shortened, and the risk of the polymer layer being damaged can be reduced. .

  (2) The membrane manufacturing apparatus can also be used for members for knee joints. FIG. 9 is a schematic longitudinal sectional view showing the internal structure of the film manufacturing apparatus 12 according to the modification, and is a view showing a state in which the workpiece 8b of the surface unit 18 to be film manufacturing is set. The surface portion 18 is an artificial joint component that constitutes an artificial knee joint together with a tibial component (not shown) and a femoral component (not shown). The surface portion 18 is provided between a tibial component fixed to the proximal end of the tibia and a femoral component fixed to the distal end of the femur, and is configured to slide relative to both. Has been.

  The surface portion 18 is formed in a substantially rectangular plate shape having front and back surfaces. The surface portion 18 is configured such that one surface 18a (first surface) slides with the femoral component, and the other surface 18b (second surface) slides with the tibial component. As in the case of the above embodiment, a polymer layer is formed on the one side surface 18a and the other side surface 18b by photograft polymerization.

  The work accommodating portion 80 of this modification has two covers (a first cover 81 and a second cover 86) and a work holding portion 90. As in the case of the above-described embodiment, these are configured as separate members from each other by a material having ultraviolet transparency (for example, acrylic resin), and are configured to accommodate the workpiece 8b therein.

  The first cover 81 is formed in a substantially rectangular plate shape. As shown in FIG. 9, the first cover 81 is placed on the work holding unit 90 accommodated in the second cover 86. 9, the central portion of the first cover 81 in a plan view is provided as a first surface portion 81a along the surface 18a with a gap G5 from the surface 18a on one side of the workpiece 8b of the surface portion 18. .

  The second cover 86 has an annular portion 87 and a bottomed cylindrical portion 88, which are integrally formed. The second cover 86 is supported in the support mechanism 25 by the outer peripheral edge of the annular portion 87 being supported by the inner flange portion 27. The work holding unit 90 and the work 8b are accommodated in the second cover 86.

  The annular portion 87 is a plate-like portion formed in an annular shape in plan view, and the outer edge portion is formed in a circular shape, while the inner edge portion is formed in a substantially rectangular shape. The inner edge portion is formed in a size that is larger than the outer edge portion of the workpiece 8b of the surface portion 18. The bottomed cylindrical portion 88 is formed to extend downward from the inner edge portion of the annular portion 87. A gap G6 is formed between the bottom portion 88a (second surface portion) of the bottomed cylindrical portion 88 and the other surface 18b of the workpiece 8b.

  As shown in FIG. 9, the work holding unit 90 is formed in a substantially cylindrical shape. The work holding part 90 has a cylindrical part 91 and an extending part 92, which are integrally formed.

  The cylindrical portion 91 is formed in a cylindrical shape into which the workpiece 8b is inserted so that the outer peripheral surface of the workpiece 8b is in contact with the inner peripheral surface. The extending portion 92 is formed in a flange shape that extends inwardly from the inner peripheral edge portion (the inner peripheral edge portion on the lower side in FIG. 9) on one side in the tube axis direction of the cylindrical portion 91.

  In the workpiece accommodating portion 80, the workpiece holding portion 90 is accommodated in the second cover 86 by being held by the step portion 89 of the second cover 86 supported by the inner flange portion 27. Further, the workpiece 8b is accommodated in the second cover 86 by the stepped portion 18c formed on the outer peripheral side portion of the workpiece 8b being held by the extending portion 92 of the workpiece holding portion 90. . The opening on the upper side of the work holding unit 90 is covered with a first cover 81.

  In the workpiece accommodating portion 80, a gap G5 is formed between the one surface 18a of the workpiece 8b and the first surface portion 81a of the first cover 81. On the other hand, a gap G6 is formed between the other surface 18b of the workpiece 8b and the bottom 88a of the second cover 86.

  In the film manufacturing apparatus 12 according to the present embodiment, the ultraviolet ray is irradiated from the ultraviolet irradiation unit 30 in a state in which the solution 23 is injected into the gaps G5 and G6, so that the surface 18a on one side of the workpiece 8b and A polymer layer is formed on both surfaces 18b on the other side.

[effect]
As described above, also in the film manufacturing apparatus 12 according to the present embodiment, a polymer layer can be simultaneously formed in a portion where light irradiation is necessary on the surface of the workpiece 8b, as in the case of the above embodiment. Specifically, in the film manufacturing apparatus 12 according to this modification, a polymer layer can be generated at a time on both the one surface 18a and the other surface 18b of the workpiece 8b. Thereby, since it is not necessary to set the work twice as in the prior art, the work setting time and the ultraviolet irradiation time with respect to the support mechanism 25 can be shortened, and the risk of the polymer layer being damaged can be reduced. .

  (3) Moreover, in the said embodiment and each modification, using the two irradiation parts 31 and 32, the part which wants to produce | generate a polymer layer in a workpiece | work is irradiated with an ultraviolet-ray, However, not only this but one You may irradiate with an ultraviolet-ray in an irradiation part. In this case, for example, an ultraviolet reflecting part can be appropriately disposed around the work so that the part where the polymer layer is to be generated in the work is irradiated with the ultraviolet light.

  (4) Moreover, in the said embodiment and each modification, although it formed by carrying out mirror surface processing of the internal peripheral surface of the metal plate formed in the cylindrical shape as an ultraviolet-ray reflection part, it can reflect an ultraviolet-ray not only in this. Any thing can be used. For example, a coating film that reflects ultraviolet rays may be formed on the inner peripheral surface of the cylindrical main body 26 of the support mechanism 25. Further, the present invention is not limited to this, and the film manufacturing apparatus may be configured by omitting the ultraviolet reflecting part.

  (5) Moreover, in the said embodiment and each modification, although the workpiece holding part was comprised with the member separate from the 1st cover and the 2nd cover, it is not restricted to this, For example, a 1st cover or 2nd You may be comprised integrally with a cover.

  (6) Moreover, in the said embodiment and each modification, in the ultraviolet irradiation part 30, ultraviolet rays are irradiated using the ultraviolet LED element 36, but it is not restricted to this, For example, a high pressure mercury lamp can also be used. .

  The present invention can be widely applied as a film manufacturing apparatus used for manufacturing an artificial joint component in which a sliding surface sliding with respect to another member is generated by photograft polymerization.

3 Liner (artificial joint component)
5 Bone head ball (artificial joint component)
8 Base material, work 9 Polymer layer 10, 11, 12 Membrane manufacturing equipment 18 Surface (artificial joint component)
23 Solution 25 Support mechanism 30 Ultraviolet irradiation unit 40, 60, 80 Work storage unit 41, 61, 81 First cover 46, 66, 86 Second cover

Claims (11)

A film manufacturing apparatus for forming a polymer layer constituting a sliding surface on a surface of a workpiece which is a base material of an artificial joint component by photograft polymerization,
A first surface part, each having ultraviolet transparency, and having a first surface part arranged along the first surface with a gap between the first surface, which is at least part of one part of the surface of the workpiece. A first cover, and a second surface portion arranged along the second surface with a gap from a second surface that is at least a part of the surface of the workpiece opposite to the first surface. A work containing portion capable of holding a solution containing a monomer injected between the work and the surface of the work in a state of containing the work,
An ultraviolet irradiation unit capable of irradiating the first surface side with ultraviolet rays through the first cover, and capable of irradiating the second surface side with ultraviolet rays through the second cover;
A support mechanism for supporting the workpiece container so that the solution injected between the surface of the workpiece and the workpiece container is irradiated with ultraviolet rays from the ultraviolet irradiation unit;
A film manufacturing apparatus comprising: The film manufacturing apparatus according to claim 1,
The ultraviolet irradiation unit is
It is arrange | positioned so as to oppose the said 1st surface of the said workpiece | work of the state accommodated in the said workpiece | work accommodating part, and this workpiece | work accommodating part was supported by the said support mechanism, The said 1st surface side via the said 1st cover A first irradiating unit for irradiating with ultraviolet rays;
A second irradiating unit disposed so as to face the second surface of the workpiece and irradiating the second surface side with ultraviolet rays via the second cover;
A film manufacturing apparatus comprising: In the film manufacturing apparatus according to claim 2,
The support mechanism is formed in a cylindrical shape, the first surface of the workpiece in a state of being accommodated in the workpiece accommodating portion is directed to one side in the cylinder axis direction, and the second surface of the workpiece is the cylinder shaft. A cylindrical main body capable of accommodating the workpiece accommodating portion so as to face the other side of the direction;
The first irradiation unit is disposed on the one side of the cylindrical main body in the cylindrical axis direction, and the second irradiation unit is disposed on the other side of the cylindrical main body in the cylindrical axis direction. A film manufacturing apparatus characterized by comprising: In the film manufacturing apparatus according to claim 3,
An apparatus for manufacturing a film, further comprising an ultraviolet ray reflection portion provided inside the cylindrical main body portion and reflecting ultraviolet rays from the ultraviolet ray irradiation portion toward the inner side of the cylindrical main body portion. The film manufacturing apparatus according to claim 4,
The film manufacturing apparatus according to claim 1, wherein the ultraviolet reflecting portion is formed in a cylindrical shape along an inner peripheral surface of the cylindrical main body portion. In the film manufacturing apparatus according to claim 4 or 5,
The ultraviolet reflecting part is
A first reflecting portion provided on the first irradiating portion side of the workpiece in a state of being accommodated in the workpiece accommodating portion in the cylindrical main body portion;
A second reflecting portion provided on the second irradiating portion side with respect to the workpiece in a state of being accommodated in the workpiece accommodating portion in the cylindrical main body portion;
A film manufacturing apparatus comprising: In the film manufacturing apparatus according to any one of claims 3 to 6,
The film manufacturing apparatus according to claim 1, wherein the support mechanism further includes a support portion that protrudes inward from the cylindrical main body portion and supports a portion on an outer peripheral side of the workpiece housing portion. In the film manufacturing apparatus according to any one of claims 1 to 7,
The film manufacturing apparatus, further comprising: a workpiece holding unit that holds the workpiece in a state where the gap is formed between the first surface portion, the second surface portion, and the workpiece. The film manufacturing apparatus according to claim 8, wherein
The film manufacturing apparatus, wherein the work holding unit is provided as a separate member from the first cover and the second cover. In the film manufacturing apparatus according to claim 8 or 9,
The film manufacturing apparatus, wherein the work holding unit is made of a material having ultraviolet transparency. In the film manufacturing apparatus according to any one of claims 8 to 10,
An apparatus for producing a film, wherein an injection hole for injecting the solution is formed in the work holding part.

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