JP2020124274A - Subcutaneous implantable port - Google Patents

Abstract

To provide a subcutaneous implantable port including identification display with a novel aspect.SOLUTION: In a subcutaneous implantable port 10, a local discolored area caused by degeneration effect of laser light irradiation is provided with a smooth member surface, and identification display 90 visible from the outside is attached by using such a local discolored area.SELECTED DRAWING: Figure 1

Description

The present invention relates to a subcutaneous implantable port that is used by being implanted under the skin of a patient in the medical field and is used for administration of a medicinal solution into the body.

Conventionally, when performing medical treatment in which a medical fluid is repeatedly injected into the body for a long period of time, a port for injecting the medical fluid is buried subcutaneously in the patient in order to reduce the burden of repeated puncture to the human body. Is proposed. Specifically, for example, JP-A-6-277298 (Patent Document 1) discloses an example of a subcutaneous implantable port.

By the way, the subcutaneous implantable port to be embedded in the body is required to have an identification display such as a number for identifying an individual when taken out for some reason. The description of information in the subcutaneous implantable port is also defined in ISO 10555-6:2015_6.1, for example.

Therefore, in the conventional subcutaneously implantable port, an identification symbol such as a number has been engraved by hot stamping on the surface of a synthetic resin housing or press stamping on the surface of a metal housing.

However, as a result of examination by the present inventor, it was found that the conventional subcutaneously implantable port had some new and undisclosed problems. Specifically, for example, in a conventional subcutaneously implantable port, unevenness or edges generated by engraving an identification mark on the surface touches the body tissue of the patient in the subcutaneously implanted state, which causes discomfort or physiology. There was a risk of causing a physical reaction. In addition, burrs or the like generated by engraving the identification symbol may come off to generate foreign matter. Furthermore, with the engraved identification mark, it is difficult to wipe off the foreign matter such as body tissue clogging the concave portion, which may hinder the visual confirmation of the identification mark.

JP-A-6-277298

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to reduce or eliminate at least one of the problems concerned with a subcutaneous implantable port having a conventional structure having an identification mark having a novel structure, thereby providing a conventional structure. To provide a new subcutaneous implantable port.

A first aspect of the present invention is provided with a member surface having a smooth local discoloration region due to a denaturing action of laser light irradiation, and an identification display visually visible from the outside is provided by using the local discoloration region. It is a subcutaneous implantable port.

With the subcutaneously implantable port of this aspect, a visible identification mark can be obtained while maintaining a smooth member surface, and the occurrence of irregularities, edges, burrs, etc. associated with the identification mark can be prevented. Therefore, for example, even when the identification display is exposed on the port surface, contact with the body tissue of the patient such as unevenness due to the identification display is avoided. It is also possible to attach the identification to the inside of the port, which prevents damage to the identification. Further, since the identification display is formed in the color change area, it is possible to improve the visibility by utilizing the difference in color from the surroundings as compared with the conventional identification display simply engraved with unevenness.

In the present embodiment, the “color-change region due to the denaturing action” refers to a structure in which the color changes by visual observation due to chemical or physical property changes. In other words, the "color change area due to the denaturing effect" means coloring due to oxidation of the metal surface, coloring due to chemical change of synthetic resin or metal (including chemical change of mixed pigment), and photorefraction due to generation of bubbles inside synthetic resin. Including coloring due to changes in the index and/or reflectance. On the other hand, the "color-change area due to the modifying action" does not include a mode in which the smoothness of the surface is mechanically changed by roughening such as engraving or etching, and it is locally different from the surface. It does not include printing in which materials (pigments, dyes, etc.) are attached and colored.

A second aspect of the present invention is the subcutaneous implantable port according to the first aspect, wherein the inside of the synthetic resin member is partially modified and the identification mark is attached to the inside of the synthetic resin member. There is something.

In the subcutaneously implantable port according to this aspect, since the modified portion of the resin due to the laser light is provided inside the synthetic resin member, the modified resin does not directly contact the internal tissue. Further, even if bubbles or the like are generated due to the irradiation of the laser light, it is possible to stop inside the synthetic resin member and maintain the smooth surface of the member.

A third aspect of the present invention is the subcutaneous implantable port according to the first aspect, wherein the surface of the metal member is partially modified and the identification mark is attached to the surface of the metal member. Is.

In the subcutaneously implantable port according to this aspect, the surface of the metal member is denatured by heating and oxidizing the metal member or forming an oxide film by the irradiation of the laser beam, so that the identification display can be performed while maintaining the smooth surface of the metal member. Can be provided. The identification-attached metal member may be directly exposed on the surface of the port, or may be covered with a transparent cover member or the like as shown in the fourth aspect below.

A fourth aspect of the present invention is, in the subcutaneous implantable port according to the first or third aspect, covers the color change area of the display member with respect to the display member having the color change area on the surface. A transparent cover member is provided.

In the subcutaneously implantable port according to this aspect, it is possible to prevent the discolored area of the display member from directly contacting the body tissue. Therefore, even in the case of a patient who has an allergic reaction to a specific material such as metal, the degree of freedom in selecting the display member is increased.

According to the present invention, a subcutaneous implantable port having a novel identification in which at least one of the problems of concern with the conventional structure of the subcutaneous implantable port having an engraved identification is alleviated or eliminated. Can be provided.

The right view of the subcutaneous implantable port as a 1st embodiment of the present invention. 2 is a perspective view of the subcutaneous implantable port shown in FIG. 1. FIG. 2 is a bottom view of the subcutaneous implantable port shown in FIG. 1. FIG. FIG. 2 is a vertical sectional view of the subcutaneous implantable port shown in FIG. 1. 1. The perspective view which shows the inner base member which comprises the housing of the subcutaneous implantation type port shown by FIG. FIG. 3 is a perspective view showing an outer cover member that constitutes a housing of the subcutaneously implantable port shown in FIG. 1. FIG. 7 is a bottom view of the outer cover member shown in FIG. 6. FIG. 3 is a perspective view showing a single-piece state of a plug constituting the subcutaneous implantable port shown in FIG. 1. FIG. 9 is a vertical sectional view of the stopper shown in FIG. 8. FIG. 3 is an enlarged photograph showing a specific example of identification display on a display member that constitutes the subcutaneously implantable port shown in FIG. 1. The bottom view which shows the subcutaneous implantable port as a 2nd Embodiment of this invention. FIG. 12 is a vertical cross-sectional view of the subcutaneous implantable port shown in FIG. 11. The right view of the subcutaneous implantable port as a 3rd embodiment of the present invention. The right view which shows the subcutaneous implantable port of another invention for reference. FIG. 15 is a perspective view showing an inner base member that constitutes the housing of the subcutaneously implantable port shown in FIG. 14.

Hereinafter, in order to more specifically clarify the present invention, embodiments of the present invention will be described in detail with reference to the drawings.

First, FIGS. 1 to 4 show a subcutaneous implantable port 10 as a first embodiment of the present invention. The subcutaneously implantable port 10 of the present embodiment has a housing 12, and a recess 14 provided in the housing 12 is closed by a plug 16 to form an internal cavity 18 for storing a drug solution. .. In the following description, the vertical direction means the vertical direction in FIG. 1 in principle.

More specifically, the housing 12 has a divided structure and includes an inner base member 20 and an outer cover member 22 as a cover member.

As shown in the single part drawing in FIG. 5, the inner base member 20 has a thick, generally circular block shape, and a circular recess 14 that opens upward is formed in the central portion. A collar-shaped projection 26 is provided on the outer peripheral surface of the lower end of the peripheral wall 24 of the recess 14, while an inner peripheral corner of the upper end is enlarged in a notch shape to form an annular step 28. Has been done.

Further, the inner base member 20 is provided with a port portion 30 that communicates the recess 14 with the outside. The port portion 30 is provided so as to project from the peripheral wall portion 24 on the outer peripheral surface by partially thickening the peripheral wall portion 24 of the recess 14 outward. A communication hole 32 penetrating the peripheral wall portion 24 is formed in the port portion 30.

Then, as shown in FIGS. 1 to 4, a cylindrical port member 34 is press-fitted and fixed from the outside into the communication hole 32 of the port portion 30. The port member 34 has a base end side tubular portion 36 fixed to the communication hole 32 of the port portion 30 and a tip end side tubular portion 38 protruding outward from the peripheral wall portion 24. An external conduit 40 such as a catheter is connected to the distal end side tubular portion 38.

The port portion 30 of the inner base member 20 is provided so as to project toward the outer periphery with a projection height larger than that of the collar-shaped projection portion 26 provided at the base end of the peripheral wall portion 24. Further, a pair of fitting plate portions 42, 42 protruding from the outer peripheral surface of the collar-like protrusion 26 are formed on both sides in the circumferential direction of the port portion 30 with a predetermined distance therebetween.

The outer cover member 22 has a substantially cylindrical shape that extends in the up-down direction as shown in the single-part drawings in FIGS. 6 and 7, and has a size that can cover the inner base member 20 from above and cover substantially the entire outer circumference. Have The outer cover member 22 also includes a lower tubular portion 44 having a thick tubular shape and an upper tubular portion 46 having a tapered tubular shape.

The lower tubular portion 44 of the outer cover member 22 has a cylindrical fitting inner peripheral surface 48 and a flare outer peripheral surface 50 that spreads downward, and gradually becomes thicker downward. There is. The fitting inner peripheral surface 48 has a cylindrical shape corresponding to the outer peripheral surface of the inner base member 20, and the lower end opening of the fitting inner peripheral surface 48 corresponds to the collar-shaped protrusion 26 of the inner base member 20. A stepped expanded diameter portion 52 is formed.

Further, in the lower tubular portion 44 of the outer cover member 22, a portion corresponding to the port portion 30 of the inner base member 20 is a vertical wall portion 54 having a flat outer peripheral surface that spreads vertically. An opening window 56 for exposing the port portion 30 to the outer peripheral surface is formed in the portion 54. Further, a pair of protective pieces 58, 58 projecting outward from the vertical wall portion 54 are formed on both sides in the circumferential direction of the opening window 56, and protect the port member 34 of the inner base member 20 from both sides in the circumferential direction. It is like this.

On the other hand, the upper tubular portion 46 of the outer cover member 22 has a tapered cylindrical shape that gradually reduces in diameter upward and extends with a substantially constant thickness dimension. In addition, an annular pressing portion 60 that projects toward the inner circumference is formed at the opening of the upper end of the upper tubular portion 46, and a locking projection that projects downward is provided at the inner peripheral end of the annular pressing portion 60. The claw 62 is integrally formed over the entire circumference.

Further, fitting recesses 64, 64 are formed on the bottom surface of the outer cover member 22 at positions corresponding to the fitting plate portions 42, 42 of the inner base member 20. It should be noted that the outer cover member 22 is provided with a service hole 66 that vertically penetrates adjacent to the outer peripheral side of each fitting recess 64. The service hole 66 can be appropriately used, for example, for positioning in a manufacturing line or operation, and for fixing the inner base member 20 or the port member 34 with a fitting pin.

Then, the outer cover member 22 is covered over the inner base member 20 from above, and is assembled in a state where the inner base member 20 is inserted into the lower tubular portion 44 of the outer cover member 22 and fixed to each other. In this assembled state, the fitting inner peripheral surface 48 of the lower tubular portion 44 of the outer cover member 22 is overlapped over substantially the entire outer peripheral surface of the inner base member 20. Further, the lower end surface of the outer cover member 22 is superposed on the upper surface of the collar-shaped protrusion 26 of the inner base member 20 and the upper surface of the port portion 30 so as to be vertically aligned, and the inner base member 20 and the outer cover member 22 are aligned. The lower surfaces of the two are spread on substantially the same plane.

Further, as described above, the plug body 16 that cooperates with the housing 12 to form the inner cavity 18 is formed as a thick-walled, generally disc-shaped member as shown in the single-part drawings in FIGS. There is. The stopper 16 is made of an elastic material such as rubber or elastomer.

A circular fitting protrusion 76 is provided on the upper surface of the plug 16 so as to project upward in the central portion. In addition, in the plug body 16, an upper surface located on the outer periphery of the fitting protrusion 76 is an upper annular surface 78 that expands annularly below the fitting protrusion 76.

On the other hand, the lower surface of the plug 16 is provided with a circular recess 80 that opens downward in the central portion. Further, in the plug body 16, the lower surface located on the outer periphery of the recess 80 is an annular lower annular surface 82 that extends radially outward from the opening edge of the recess 80.

The plug body 16 is arranged on the inner base member 20 so as to be overlapped with each other, and as shown in FIGS. 1 to 4, the housing 12 is covered with the outer cover member 22 which is covered from above. Is assembled into. The outer peripheral portion of the plug body 16 is axially sandwiched between the upper end surface of the peripheral wall portion 24 of the inner base member 20 and the annular pressing portion 60 of the outer cover member 22 in the assembled state in the housing 12. It is compressed.

By compressing the outer peripheral portion of the plug body 16, the outer peripheral surface of the plug body 16 is in close contact with the inner peripheral surface of the upper tubular portion 46 of the outer cover member 22. Further, the lower surface of the outer peripheral portion of the plug body 16 is in contact with the upper end surface of the peripheral wall portion 24 of the inner base member 20 over the entire surface including the annular step portion 28. Further, the inner surface of the annular pressing portion 60 of the outer cover member 22 is in contact with the upper surface of the outer peripheral portion of the plug body 16, and the locking claws 62 are locked so as to bite.

Further, in the assembled state to the housing 12, the upper surface of the plug body 16 is exposed by slightly bulging upward from the upper end opening of the outer cover member 22. On the other hand, the lower surface of the plug body 16 extends substantially flat on the opening surface of the recess 14 of the inner base member 20. As a result, the recess 14 of the inner base member 20 is fluid-tightly closed by the plug 16 at the opening to form the internal cavity 18 for storing the chemical liquid.

A medicinal solution or the like can be injected into the lumen 18 from the outside by allowing a hollow needle that is percutaneously punctured to penetrate the stopper 16 in a state of being implanted subcutaneously in a patient. Further, the drug solution stored in the lumen 18 can be gradually discharged through the port member 34 based on the elasticity of the stopper 16 and the like, and can be administered to a blood vessel or the like.

Here, the housing 12 is provided with an identification display 90 that is visible from the outside by using a display ring 92 as a display member.

The display ring 92 has an annular shape that extends in the circumferential direction with a substantially constant cross section, and is incorporated in the upper end outer peripheral portion of the peripheral wall portion 24 of the inner base member 20, as shown in FIG. 4. That is, a stepped small diameter portion 94 is provided at the upper end portion of the peripheral wall portion 24 of the inner base member 20 so as to cut out the outer peripheral corner portion of the upper end, and the display ring 92 is fitted onto the small diameter portion 94. Have been assembled.

In the assembled state of the display ring 92 to the housing 12, the outer peripheral surface of the display ring 92 is superposed on the inner peripheral surface of the outer cover member 22, and the upper end surface of the display ring 92 is superposed on the lower surface of the plug body 16. Has been done.

Further, the outer cover member 22 that covers the outer peripheral surface of the display ring 92 is made colorless and transparent or colored and transparent that transmits visible light, and the outer peripheral surface of the display ring 92 incorporated in the housing 12 has the outer cover member 22 interposed therebetween. , Visible from the outside. In FIG. 1, the outline of the display ring 92 is shown by a broken line in order to distinguish it from the external structure line of the housing 12 and the like. Incidentally, the outer cover member 22 is preferably formed of a transparent synthetic resin material, and in consideration of chemical resistance and biocompatibility, for example, polyether sulfone, acrylic resin, epoxy resin or the like is preferably adopted. .. Although the inner base member 20 may be formed of metal or the like, it is desirable that the inner base member 20 be made of the same synthetic resin as that of the outer cover member 22, so that the fixing to the outer cover member 22 by welding or the like can be easily realized. Become.

The display ring 92 is made of metal whose surface layer is modified by the action of oxidation or the like due to heating to form a discolored region. The metal used as the material of the display ring 92 is not limited as long as it is a metal that can be marked by an oxidation effect or the like by being heated by irradiation of laser light, but is, for example, titanium, stainless steel, iron or aluminum, These alloys and the like can be adopted. In particular, in this embodiment, the display ring 92 made of a titanium alloy is used, and when heated, an oxide film is formed on the surface by the modifying effect of oxidation. Since the oxide film exhibits a hue according to the thickness and the like due to light interference or diffractive action, a clear chromatic color can be visually recognized.

Therefore, by locally heating the display ring 92, it is possible to provide a colored area as a local color change area. For example, laser light is used to heat a specific portion of the surface of the display ring 92. By doing so, various characters, designs, symbols and the like can be provided on the surface of the display ring 92 in any form as the identification display 90.

Specifically, as illustrated in FIG. 1, the identification display 90 can display, for example, a company mark, a company name, a management number, etc., in a localized coloring area as a symbol that can identify an individual.

FIG. 10 shows a specific example in which a colored region is actually formed on the surface of the titanium alloy display ring 92 by using laser light. As the laser light irradiation device, "Fiber Laser Marker MX-Z2000G" manufactured by OMRON Corporation was used.

In FIG. 10, only the central portion can be clearly seen due to the photographic light rays, but in the actual product, it was possible to clearly display the entire identification display 90. Further, it was confirmed that the entire identification display 90 can be visually confirmed from the outside through the outer cover member 22 with the display ring 92 incorporated in the housing 12.

Particularly, in the subcutaneously implantable port 10 according to the present embodiment, the identification mark 90 is colored and formed by the modification effect of the surface of the display ring 92 due to the laser light irradiation, so that the display ring 92 has substantially no unevenness and is smooth. It is possible to attach the identification mark 90 while maintaining a smooth surface. Therefore, as compared with the conventional engraved structure of the identification display, foreign matter, germs and the like are prevented from entering the concave portion caused by the engraving, and the visibility of the identification display 90 is reduced due to the foreign matter entering the concave portion. In addition, it is possible to reduce the risk of invasion into the body of foreign matter and various germs that have entered the recess.

Further, in the present embodiment, since the surface of the display ring 92 is kept smooth and the exposure of the display ring 92 to the outside is avoided, there is a problem in the conventional engraving structure of the identification display on the surface of the housing. It is possible to avoid the unevenness and contact of the edge of the identification display portion with the body tissue, and the accompanying problems of discomfort and physiological reaction.

Furthermore, since the display ring 92 is incorporated inside the housing 12 to prevent its exposure to the surface of the housing 12, biological reactions such as allergies due to the display ring 92 and the colored areas associated with the denaturing action are reduced or reduced. Can be avoided, and a large degree of freedom in selection of the material of the display ring 92 and the like can be secured.

Moreover, in the present embodiment, the display ring 92 is arranged in a substantially sealed region surrounded by the housing 12 and the plug body 16, and contact with the stored drug solution in the lumen 18 can be prevented. Therefore, it is not necessary to consider the chemical resistance of the display ring 92 and the identification display 90, and even if there is a foreign substance or the like attached to the display ring 92, it is possible to prevent the chemical liquid from entering the body. ..

Further, the identification display 90 colored and formed by the modifying action of the display ring 92 has a smooth surface and is chemically stable. Therefore, the display function of the identification mark 90 can be maintained for a long period of time, and when it is taken out from the patient's body and observed, it can be displayed on the engraved concave portion like the identification mark engraved on the conventional housing surface. Visibility does not deteriorate due to intrusion of living tissue, and foreign substances such as living tissue attached to the surface can be easily wiped off, and the visual confirmation of the identification display 90 becomes easy.

Next, FIGS. 11 and 12 show a subcutaneous implantable port 100 according to a second embodiment of the present invention. It should be noted that substantially the same members and parts as those in the first embodiment are designated by the same reference numerals in the drawings as those in the first embodiment, and detailed description thereof will be omitted.

This embodiment exemplifies another aspect of the identification display, and the identification display 102 is provided by providing a local color change area inside the member forming the housing 12.

Specifically, on the bottom wall portion 104 of the inner base member 20 formed of a transparent synthetic resin material, an identification display 102 by a local color change area is provided at an intermediate portion in the thickness direction. .. Such a color change area is formed, for example, by irradiating the bottom wall portion 104 with a laser beam, adjusting the focal position of the laser beam, and condensing the laser beam at an intermediate portion in the thickness direction of the bottom wall portion 104. By locally concentrating the energy of the laser beam in the middle portion in the thickness direction of the housing 12, the synthetic resin is locally heat-denatured, and the heat-denatured portion is burnt or bubbles are generated. For example, a color changing area that is changed (colored) to black or white is provided, and the identification display 102 is attached using the color changing area.

The identification display 102 is visible through the transparent inner base member 20 directly from the outside. In addition, in FIG. 12, the colored area is exaggerated to show the identification display 102 as a model for easy understanding.

Also in the subcutaneously implantable port 100 of the present embodiment, by modifying the inside of the housing 12, the target identification mark 102 can be attached while keeping the member surface smooth. The same effect as the form can be exhibited.

In particular, since the identification display 102 is provided inside the housing 12, even if there is a substance generated due to the modification of the resin, the influence on the living body, the drug solution, etc. is avoided. Further, as compared with the first embodiment, a separate component such as a display ring is not required, so that the housing structure can be simplified.

The portion where the identification display 102 can be provided is not limited to the bottom wall portion 104 of the inner base member 20, and the identification display 102 may be attached to the peripheral wall portion 24 of the inner base member 20, the outer cover member 22, or the like. Can also

Next, FIG. 13 shows a subcutaneous implantable port 110 as a third embodiment of the present invention. In this embodiment, the outer cover member 114 that forms the housing 112 is a metal member, for example, titanium (including a titanium alloy). The outer cover member 114 constitutes a display member, and an identification display 116 is provided on the outer peripheral surface.

Similar to the first embodiment, the identification display 116 is configured by a color change area that is locally formed by irradiation with laser light. The inner base member 20 of the housing 112 may be made of a titanium alloy, and the identification display 116 may be attached to the surface exposed to the outside, such as the lower surface of the inner base member 20.

In this embodiment, the identification display 116 can be provided on the surface of the housing 112 exposed to the outside while ensuring the smoothness of the surface, and a wide display surface can be easily secured without using a special display member. can do. In addition, the outer cover member 114 made of a titanium alloy has a good color developability due to the irradiation of the laser beam, and also exhibits a high biocompatibility. Moreover, it is possible to avoid the problem caused by the unevenness of the surface as in the case of engraving the conventional identification display. Therefore, the same effect as that of the first embodiment can be obtained.

Although the embodiments of the present invention have been described above, the present invention is not limitedly interpreted by the specific description of the above embodiments, and various changes, modifications, and improvements are made based on the knowledge of those skilled in the art. It can be implemented in a mode in which the above is added.

For example, when the identification mark is provided inside the housing as in the first and second embodiments, the outer cover member and/or the inner base member need not be entirely transparent, and at least the identification mark can be visually recognized from the outside. It suffices if the possible portion is transparent. Further, when the identification mark is provided on the surface of the housing as in the third embodiment, the outer cover member and/or the inner base member does not need to be entirely made of metal, and at least the portion where the identification mark is provided is made of metal. It only needs to be made. The identification display does not need to be colored in chromatic colors, and may be colored in achromatic colors.

Further, the assembly structure of the display member separate from the housing is not limited to the external fitting assembly structure to the inner base member as in the first embodiment. For example, the outer peripheral surface of the plug body or the outer cover member. It is also possible to assemble the display member on the inner peripheral surface and/or the outer peripheral surface of the. Furthermore, the display member is not limited to the annular shape, and any shape such as a plate shape can be adopted. In addition, the specific structure, shape, size, etc. of the subcutaneously implantable port are not limited in any way, and each member such as the housing, the plug body, and the inner cavity can be designed arbitrarily.

Note that both the identification display mode of the first embodiment and the identification display mode of the second embodiment may be adopted in combination, and further, at least the first identification mode and the second identification display mode. It is also possible to adopt one and the third identification display mode together. In addition, the specific description content and description mode of the adopted identification display are not limited.

By the way, FIG. 14 shows a reference form of a subcutaneous implantable port 120 according to another invention. Such another invention has the same problems as the present invention. Further, the subcutaneously implantable port 120 of the present reference embodiment realizes the identification display 122 that can be visually recognized from the outside while ensuring the smoothness of the housing surface that contacts the living body.

Specifically, as shown in FIG. 15, the identification surface 122 is provided with a concave and/or a convex on the member surface of the inner base member 126 that constitutes the housing 124. The identification display 122 based on the unevenness may be formed by, for example, engraving with a press die, melting with a heating die or laser light irradiation in consideration of the material of the inner base member 126, and the like.

Such unevenness forms a region that is visually recognized as a colored region such as white due to reflection or refraction of light at the interface or a prism action. Therefore, even if the identification display 122 itself is not colored with a pigment or a dye, the identification display that can be visually recognized is realized. However, it is also possible to improve the distinctiveness of the identification display 122 by coloring the surface of the unevenness or injecting a colored filler into the concave.

As in the first embodiment, an outer cover member 128 made of a transparent synthetic resin is attached to the inner base member 126 so as to cover the surface with the identification display 122 from the outside.

As a result, the identification display 122 attached to the outer peripheral surface of the inner base member 126 is visible from the outside through the outer cover member 128. From this, in this reference mode, the display member is formed by the inner base member 126.

In the subcutaneous implantable port 120 configured as described above, the identification mark 122 itself has irregularities and edge portions, but such irregularities and edge portions are covered with the outer cover member 128, and the surface of the subcutaneous implantable port 120 is covered. Exposure to is avoided. Therefore, it is possible to avoid contact between the unevenness and the edge of the identification mark 122 and the body tissue in the use state of the subcutaneously implantable port 120 and the problems of discomfort and physiological reaction that accompany it.

Further, the outer peripheral surface of the inner base member 126 with the identification mark 122 is covered with the outer cover member 128, and the outer peripheral surface and the inner cavity 18 are sealed with the plug 16. Therefore, it is possible to prevent foreign substances such as burrs generated by the unevenness of the identification display 122 from being mixed in the chemical liquid.

In the present reference mode, the identification display 122 is attached to the surface of the inner base member 126, but it is separate from the inner base member 126 and the outer cover member 128, for example, as in the first embodiment of the present invention. It is also possible to provide a display member such as a display ring and attach an identification mark to the display member. Also, the part to which the identification display is attached is not limited, and for example, the identification display is provided on the bottom surface of the inner base member 126 or the surface of the outer cover member 128, and the identification display part is provided separately. It is also possible to cover with. Alternatively, an identification mark may be attached to the inner peripheral surface of the transparent outer cover member 128 by engraving or the like. In that case, a transparent cover for covering the identification mark attached to the inner peripheral surface by the outer cover member 128 itself. The member may be constructed.

Further, since the identification display 122 as in the present reference mode is not directly exposed to the surface, the identification display is made by coloring by attaching a dye or a pigment to the surface of the member by printing, for example, instead of forming the unevenness. 122 may be configured.

As described above, even when the identification display 122 is provided by adhering a dye or a pigment, the identification display 122 is covered with the transparent cover member, so that the identification display 122 is prevented from peeling off or eluting, and the dye or the dye is removed. The risk of the pigment being released into the body can be avoided.

That is, the present specification and the drawings disclose the following different invention modes as inventions different from the claimed invention.

A first aspect of the invention is a subcutaneous implantable port in which a product identification mark attached to the surface of a display member is provided so as to be visible from the outside through a transparent cover member.

A second aspect of the present invention is the same as the first aspect of the present invention, wherein the identification mark is engraved with a concave and/or a convex on the surface of the display member.

According to a third invention aspect, in the first or second invention aspect, the identification display is colored.

10, 100, 110: Subcutaneous implantable port, 22: Outer cover member (synthetic resin member, cover member), 90, 102, 116: Identification display, 92: Display ring (metal member, display member), 114: Outer cover member (Metal member, display member)

Claims (4)

A subcutaneously implantable port in which a local discoloration region due to the denaturing action of laser light irradiation is provided with a smooth member surface, and an externally visible identification mark is attached using the local discoloration region. The subcutaneously implantable port according to claim 1, wherein the inside of the synthetic resin member is partially modified so that the identification mark is attached to the inside of the synthetic resin member. The subcutaneously implantable port according to claim 1, wherein the surface of the metal member is partially modified so that the identification mark is attached to the surface of the metal member. The subcutaneous implantable port according to claim 1 or 3, wherein a transparent cover member that covers the color change area of the display member is provided on the display member having the color change area on the surface.