JP7167524B2 - Indwelling medical device and indwelling medical device set - Google Patents

Description

The present invention relates to an indwelling medical device and an indwelling medical device set including the indwelling medical device.

Currently, there are indwelling medical devices that are left in the human body for several months to years. One of such indwelling medical devices is a drug solution injection port used for administration of anticancer drugs and the like. The drug solution injection port is used by being buried under the skin, and has a partition wall (septum) formed in the center of the port made of compressed silicone rubber or the like with high airtightness. can be punctured to inject liquid medicine. The injected drug solution is administered into the blood vessel through a catheter embedded under the skin together with a drug solution injection port.
Examples of this type of chemical injection port are disclosed in Patent Documents 1 and 2 below.

Patent Literature 1 describes an access port (indwelling medical device) having a body defining a cavity in which a drug solution is stored. The access port described in Patent Literature 1 is configured to be able to identify the type and style of the access port as well as the date of manufacture, lot, and the like. In the configuration of Patent Document 1, the shape of the outer surface of the access port body is used as a feature for identifying the access port.
US Pat. No. 6,200,000 describes an access port having an identification feature. The identifying feature portion described in Patent Literature 2 is formed by engraving characters such as "CT" on the lower surface (bottom surface) of the base in a left-right reversed manner. The operator may perform an X-ray scan or the like to view the identifying features and identify the port after implantation, such as whether the access port is inside out or oriented incorrectly while in the subject's body. can determine if there is a problem.

JP 2012-236040 A Japanese Patent Publication No. 2012-523284

The operator can visually observe the access port at any angle and orientation before it is implanted in the subject. Therefore, the operator can visually recognize the shape of the access port and the written information. However, the access port is fixed within the subject's body after being implanted. Therefore, if the access port is identified by its shape as described in Patent Document 1, the characteristic shape of the access port may be hidden inside the body, making it impossible to identify the model. In addition, the method disclosed in Patent Document 2, in which characters written on the access port are imaged by X-ray and visually recognized, has the drawback that the entire identifying feature is difficult to visually recognize due to the limitation of the screen of the X-ray monitor. there is
The present invention has been made in view of the above points, and is an indwelling type in which a sufficient amount of information can be visually recognized before implantation, and the minimum necessary information can be visually recognized well through X-rays after implantation. It relates to a medical device and an indwelling medical device set.

An indwelling medical device of the present invention is an indwelling medical device to be left in the body, and includes a main body including a base that encloses at least a part of a storage space, and a lid that covers the storage space together with the base. , a diaphragm portion that is press-fitted into the main body to be punctured by a puncture needle, and a labeling portion that includes a labeling body that is at least one of characters, marks, or graphics related to the indwelling medical device, wherein the labeling portion is , X-ray transmission between the visible part visually recognized under X-ray observation due to the difference in X-ray transmittance between the marker and the surrounding area of the marker, and the marker and the surrounding area of the marker and a non-visible portion that is difficult to be visually recognized under X-ray observation due to substantially the same transmittance, and the visible portion includes a low-transmittance member having a lower X-ray transmittance than the main body. , the visible part and the non-visible part have a recess corresponding to the marker or the surrounding area, and the visible recess that is the recess of the visible part and the non-visible recess that is the recess of the non-visible part Among them, the visible recess is a filled portion of the low-transmittance member, the non-visible recess is a non-filled portion of the low-transmittance member, and the visible recess and the non-visible recess are provided inside the main body. are

In addition, an indwelling medical device set of the present invention includes the indwelling medical device described above and a plurality of the labeling units, at least a portion of the plurality of labeling units indicating different labeling bodies, and at least any Either one is attached to the indwelling medical device and used.

The present invention provides an indwelling medical device and an indwelling medical device set in which a sufficient amount of information can be visually recognized before implantation, and the minimum necessary information can be visually recognized well through X-rays after implantation. can be done.

1 is a perspective view for explaining a drug solution injection port, which is an indwelling medical device according to an embodiment of the present invention; FIG. FIG. 2 is a right side view of the chemical injection port shown in FIG. 1; FIG. 2 is a top view of the chemical injection port shown in FIG. 1; FIG. 2 is a cross-sectional view of the chemical injection port shown in FIG. 1; FIG. 2 is a longitudinal sectional view of the chemical injection port shown in FIG. 1; Fig. 5 is an exploded perspective view of the inner base and indicator portion shown in Fig. 4; It is a figure for demonstrating the visual recognition part and non-visual recognition part of one Embodiment of this invention.

An embodiment of the present invention will be described below with reference to the drawings. In addition, in all the drawings, the same components are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate. In addition, in the description of the present embodiment, the drawings are intended to explain the members constituting the indwelling medical device and the positional relationships and states of the members, and do not limit the length, width, height, etc. of each configuration. do not have.
FIG. 1 is a perspective view for explaining an indwelling medical device according to this embodiment. In this embodiment, for example, the liquid injection port 1 will be described as an indwelling medical device. Note that the indwelling medical device is not limited to the drug solution injection port 1, and is particularly preferably used as a device that functions while being indwelled in the subject's body for a period of several months to a year, but is not limited to this. not something. Medical devices other than the drug solution injection port 1 exemplified by the present embodiment include, for example, an indwelling catheter.

FIG. 2 is a right side view of the liquid injection port 1 viewed in the x direction shown in FIG. FIG. 3 is a top view of the liquid injection port 1 shown in FIG. 1 as viewed in the -z direction of the x, y, and z coordinates shown in FIG. FIG. 4 is a cross-sectional view of the liquid injection port 1 taken along the dashed line shown in FIG. 2 and viewed in the direction of arrows IV-IV. FIG. 5 is a vertical cross-sectional view of the liquid injection port 1 taken along the dashed line shown in FIG. 3 and viewed in the direction of the arrow VV.
In the present embodiment, in the main body 100, the diaphragm portion 20 side shown in FIGS. 1 to 3 is referred to as "upper", and the lower surface 21 side is referred to as "lower". Also, the direction from the lower surface 21 to the diaphragm portion 20 is referred to as "upward", and the direction from the diaphragm portion 20 to the lower surface 21 is referred to as "downward". The vertical direction is also referred to as "vertical", and the direction orthogonal to the vertical direction is also referred to as "horizontal".

The drug solution injection port 1 of this embodiment is an indwelling medical device that is left in the body. The drug solution injection port 1 includes a main body 100 including a base 14 that encloses at least part of the storage space, a cover 12 that covers the storage space together with the base 14, a label portion 22 (FIGS. 6 and 7), have. The marking portion 22 includes a marking body 222 that is at least one of letters, marks, or graphics related to the liquid injection port 1 . Further, the label portion 22 has a visible portion V1 (FIG. 7) and non-visible portions V2 and V3 (FIG. 7). The visual recognition portion V1 is a portion that is visually recognized under X-ray observation due to the difference in X-ray transmittance between the marker 222 and the surrounding area 221 of the marker. The non-visible portions V2 and V3 are portions that are difficult to see under X-ray observation because the marker 222 and the surrounding area 221 of the marker 222 have substantially the same X-ray transmittance.
The label portion 22 will be described in detail later.

As shown in FIGS. 1 to 5, the chemical injection port 1 has a main body 100. As shown in FIG. The main body 100 is a member embedded in the body of a subject, excluding a catheter connected to a blood vessel as appropriate. As shown in FIGS. 1 to 5, the lid 12, the diaphragm portion 20, and the lock top 32 are visible from the exterior of the main body 100. As shown in FIGS. The cover 12 is a member that constitutes the containing portion 10 together with the base portion 14 , and the diaphragm portion 20 is compressed and pushed into the containing portion 10 . A plurality of convex portions 20a are formed on the upper surface of the diaphragm portion 20. As shown in FIG.
A drug solution is injected into the diaphragm part 20 by a puncture needle (not shown). The lock top 32 is a member that protects the connecting portion between the connector portion 85 (FIG. 5) of the main body 100 and the catheter.

The above configuration will be described below.
[Body]
The main body 100 has a generally disk-like shape with a thickness (length in the direction along the z-axis) as a whole, and the diameter of the main body 100 is approximately 1/2 of the maximum thickness. becomes maximum at a position p1 (FIGS. 1 and 2). Also, the diameter of the main body 100 gradually increases from the lower surface 21 toward the position p1 and gradually decreases from the position p1 toward the diaphragm portion 20 . Thread hooking portions 23a and 23b and a label portion 22, which will be described later, are formed on the main body 100. As shown in FIG. Thread hooking portions 23a and 23b are portions on which a thread is hooked to sew the liquid injection port 1 to the inside of the body.
In this embodiment, the material of the main body 100 is silicone, which is highly biocompatible, or polyurethane coated with a heparinized hydrophilic material. All such materials are resin materials and have high X-ray transmittance. Therefore, in an X-ray photograph, the main body 100 appears as a translucent or white image.

The main body 100 has a containment portion 10 consisting of a base portion 14 and a lid portion 12 . The containing portion 10 has a base portion 14 having an opening 59 and a lid 12 closing at least a portion of the opening 59 . The drug solution injection port 1 also includes a diaphragm portion 20 press-fitted into the lid 12 and the base portion 14, a lock top 32 for protecting a catheter (not shown) for injecting the drug solution injected through the diaphragm portion 20 into the blood vessel, have.
The chemical injection port 1 also includes a connector portion 85 and a plurality of rigid frames (the upper frame 60 and the lower frame 70). The connector portion 85 communicates with the outside of the containing portion 10 from the liquid reservoir portion 50 . The upper frame 60 and the lower frame 70 have rigidity higher than that of the containing portion 10, and are combined with each other to form an annular frame. The diaphragm part 20 is formed by an elastic body pressed into the frame and covers the opening 59 .

As shown in FIGS. 4 and 5 , the base portion 14 is composed of an outer base portion 15 and an inner base portion 16 arranged inside the outer base portion 15 . The inner base 16 has a substantially cylindrical main body 161 and a projecting portion 162 projecting outward from the main body 161 . The liquid reservoir 50 described above is formed inside the main body 161 . The main body 161 and the liquid reservoir 50 are made of one material. Accordingly, the bottom surface 52 of the liquid reservoir 50 is made of a resin material. By forming the liquid reservoir 50 in this way, the risk of a puncture needle (not shown) for injecting the liquid medicine colliding with the inner wall of the liquid reservoir 50 and being damaged is reduced. Moreover, the risk of the diaphragm part 20 being damaged by pulling out the broken puncture needle from the diaphragm part 20 is also reduced.
In this embodiment, the liquid reservoir 50 and the base 14 have been described as one member, but they may be separate members. At this time, the liquid reservoir 50 may be made of a resin material, or may be made of another material.
Alternatively, the liquid reservoir 50 may be formed as one piece with the lower frame 70 . In this embodiment, the liquid reservoir 50 is made of the same metal as the lower frame 70 . In this case, even if a puncture needle (not shown) collides with the wall surface surrounding the liquid reservoir 50, the wall is not punctured by the puncture needle, so the liquid reservoir 50 is less likely to be damaged.

FIG. 6 is an exploded perspective view of the inner base 16 and the indicator portion 22. FIG. The inner base 16 has a step 161a at the upper edge of the liquid reservoir 50, and the upper frame 60 and the lower frame 70 are engaged with the step 161a. The inner surface of the outer base portion 15 shown in FIG. 5 is formed with a concave portion 152 (FIG. 4) that is fitted with the projecting portion 162 . The outer base 15 and the inner base 16 can be positioned by fitting the concave portion 152 to the overhanging portion 162 . Further, the outer base portion 15 has a thread hooking portion 23 a and a long groove 223 . The label portion 22 is fitted and fixed in the long groove 223 . The projection 162 positions the inner base 16 relative to the outer base 15 and fixes the indicator 22 at a fixed position on the outer base 15 , so the indicator 22 is fixed at a fixed position in the liquid injection port 1 . be.

[Label]
As shown in FIG. 5, the label portion 22 of this embodiment is fitted into the long groove 223 of the outer base portion 15 and fixed along the outer periphery of the inner base portion 16 . Therefore, the marking portion 22 of this embodiment is a part of an annular ring having an inner periphery along the outer periphery of the inner base portion 16 . The label portion 22 of this embodiment has a peripheral region 221 and a label body 222 on its upper surface 22a. Like the main body 100, the label portion 22 is made of silicone or polyurethane coated with a heparinized hydrophilic material.

Surrounding area 221 contains characters, marks, and graphics indicating information such as specifications, performance (withstanding pressure, etc.), model, manufacturer, distributor, or retention status (hereinafter referred to as “port identification information”) of liquid injection port 1 . indicates at least one. Letters are symbols that have the function of transmitting information, and also include numerals. A mark is a combination of characters representing the port identification information, a combination of characters and a diagram, or a combination of characters and graphics. Furthermore, figures refer to geometric patterns, shapes of objects, and combinations thereof.

The marker 222 is a portion of the marker 22 that visually recognizes the port identification information, and may be solid or hollow. If the marker 222 is hollow, it can be formed by forming a groove in the upper surface 22a of the marker 22. As shown in FIG. In the present embodiment, when forming the indicator portion 22 by injection molding, the port identification information can be displayed by the recessed groove by using a mold on which, for example, the letters "CHEMICAL EX" are projected.
However, this embodiment is not limited to such a configuration. For example, "CHEMICAL EX" indicates the product name of the marking portion 22, but the marking portion 22 may be of any type as long as it indicates the identification information of the liquid injection port. Other identification information may include, for example, the product name, model number, lot number, and manufacturing number. In addition to such a name, the label portion 22 may indicate functions and specifications such as pressure that can be withstood. Furthermore, the marking part 22 may be a mark or a figure other than characters.

Also, the present embodiment is not limited to molding the marker 222 at the same time as molding the marker 22 as described above. The label 222 may be formed by first forming the label portion 22 and then forming the upper surface 22a thereof by laser processing or the like. In this embodiment, the marking bodies 222 corresponding to a relatively small number of products are formed by laser processing, and when the port identification information indicated by the marking bodies 222 corresponds to a large number of products, the marking bodies 222 are formed during molding. may As the indicator 222 corresponding to a relatively small number of products, for example, one that represents the serial number of the liquid injection port 1 and information on the date of manufacture can be considered. Markers 222 corresponding to a relatively large number of products may be, for example, those representing information on product names, models, and versions.

As described above, the labeling portion 22 has a visible portion visible under X-ray observation due to the difference in X-ray transmittance between the labeling body 222 and the surrounding area 221, and a non-visible portion. In this embodiment, the visual recognition portion is formed by selectively filling the above-described concave groove with a low transmittance member having a lower X-ray transmittance than that of the marking portion 22 . Here, the term “low transmittance member” refers to a member having a lower X-ray transmittance than silicon or the like exemplified above as the material of the main body 100 and the marker portion 22 . Such members include metallic and non-metallic members. Examples of metal members include lead, stainless steel, magnesium, and aluminum. Moreover, the nonmetallic member includes, for example, at least one of metal oxides, metal compounds, and halogens. In this embodiment, for example, bismuth oxide (Bi2O3) can be used as the metal oxide (MOx). Barium sulfate (BaSO4), for example, can be used as the metal salt. Further, halogens such as bromine (Br) and iodine (I) can be used.
It should be noted that the above-mentioned "metallic member or non-metallic member" indicates that it may be composed only of a metallic member or a non-metallic member, or may include other members. As another member, for example, a paste or the like can be considered. In such a case, in the present embodiment, the paste may be mixed with a metallic member or a non-metallic member to fill the peripheral region 221 or the concave portion of the marker 222 .

In addition, in the present embodiment, a recess (groove) along the marker 222 is provided inside or outside the outline of the marker 222 (surrounding region 221), and a part of the recess is selectively provided with a low transmittance member. A visible portion and a non-visible portion are formed by filling. Here, “selectively” means that the visible recesses are filled with the low-transmittance member and the non-visible recesses are not filled with the low-transmittance member.
That is, in the present embodiment, at least a portion of the label portion 22 composed of the surrounding region 221 and the label body 222 is visible under X-ray observation, and the other portion is difficult to be seen under X-ray observation. It has become a thing. When part of the surrounding area 221 is filled with a low-transmittance member, the marker 222 contained in the surrounding area 221 is visually recognized as white characters on a black background by X-ray photography. At this time, in the present embodiment, the portion of the peripheral region 221 filled with the low-transmittance member and the marker 222 included in this peripheral region serve as the visible portion. In addition, when a part of the marker 222 is filled with the low-transmittance member, the portion of the marker 222 filled with the low-transmittance member is X-rayed to show black characters on a white background. viewed as. At this time, in the present embodiment, the portion of the marker 222 filled with the low transmittance member becomes the visible portion.

FIG. 7 is a diagram for specifically explaining such visible portions and non-visible portions. The indicator 222 shown in FIG. 7 is composed of a plurality of indicator parts 222a to 222j. The label part 222a to the label part 222j constitute the letters "CHEMICAL EX". In this embodiment, for example, "CHEMICAL EX" is the product name of the chemical injection port 1, of which "CHEMICAL" indicates the application and classification of the product, and "EX" indicates the version and model of the product, as well as the pressure resistance. It is assumed that it is linked to specifications such as.

In the present embodiment, for example, as shown in FIG. 7, the indicator section 22 includes indicator bodies 222a to 222j, which are a plurality of character strings. A part of the character string includes the low transmittance member.
Specifically, in the present embodiment, the low transmittance member is applied only to the recessed groove forming the "MIC" substantially at the center of the marking body portion 222a to the marking body portion 222j among the marking body portion 222a to the marking body portion 222j. is filling. With such a configuration, the visible portion V1, the non-visible portion V2, and the non-visible portion V3 are formed in the label portion 22 .

In the present embodiment, the visible portion and the non-visible portion of the indicator portion 22 may indicate different information. For example, if there is no other product containing the characters "CHEMICAL" in the chemical solution injection port, the label portion 222a to 222h of "CHEMICAL", or the surrounding area (for example, the label portion 222a to the label portion 222h) Only the minimum peripheral area) may be filled with the low transmittance material

In the label portion 22 shown in FIG. 7, a portion of "CHEMICAL" indicating product information is a visible portion V1, and a portion indicating the version and model is a non-visible portion V3. In this embodiment, of the indicator parts 222a to 222h, only the indicator part 222d to the indicator part 222f in the central part of the entire indicator 222 are filled with the low transmittance member. In this way, even if the area of the visual recognition portion V1 in the top view of the liquid injection port 1 becomes small, the visual recognition portion V1 is formed at a position that is easy to see, and the visibility of the visual recognition portion V1 can be prevented from being lowered.

According to the above configuration, the operator can visually see all the characters "CHEMICAL EX" before placing the chemical injection port 1, so that the operator can check the product name of the chemical injection port 1 as well as the model and version information. can do. Further, according to the above configuration, after placing the drug solution injection port 1 , the operator identifies the minimum marking body portion that allows recognition of the product name of the drug solution injection port 1 . Therefore, the operator can determine the type of the liquid injection port 1 without hesitation by visually recognizing the entire visual recognition portion V1 within the screen of the X-ray monitor. Such this embodiment can reduce the possibility that the port identification information of the liquid injection port 1 is erroneously recognized.

In the present embodiment described above, characters arbitrarily selected from among the product name and the like of the liquid injection port 1 can be used as the visible portion. For this reason, in this embodiment, even if the product name is marked with a character string that is difficult to recognize, it is possible to select a portion where the product name exhibits recognizability and use it as a visual recognition portion. The port identification information can always be made easily recognizable under X-ray observation regardless of the name or the like.
In addition, in this embodiment, it is also possible to determine whether or not the liquid injection port 1 is turned upside down inside the body by selecting reversed asymmetrical characters for the visible part V1.

The present embodiment described above is not limited to the above configuration. For example, the positions of the surrounding area 221 and the marker 222 are not limited to the upper surface 22a of the marker portion 22, but may be provided on the contact surface of the marker portion 22 with the base portion 14 (the lower surface with respect to the upper surface 22a).
Furthermore, although the label portion 22 is provided on the base portion 14 in the above configuration, the present embodiment is not limited to such a configuration, and may be attached to the lid body 12 .

[Locking member]
As shown in FIGS. 4 and 5, the drug solution injection port 1 has a locking member 200 for locking the catheter to the main body 100 in addition to the main body 100 described above. The locking member 200 includes a first cover member 80 connected to the channel hole 36 through which the drug solution flows out to the outside in the main body 100, and a second cover member 90 fitted to the first cover member 80. .

The locking member 200 includes a low-transmittance member and has a marking portion 250 indicating at least one of letters, marks, and graphics related to the liquid injection port 1 . The label portion 250 has a protruding portion 252 that protrudes in a direction intersecting the protruding direction of the fitting convex portion 116 . The protruding portion 252 of the present embodiment has a notch 251a that represents a character facing the X-ray machine or the like, and the same character that is rotated 180 degrees about the central axis of the first hole portion 116a. A cutout 251b in a folded state is formed, and the cutouts 251a and 251b pass through the projecting portion 252. As shown in FIG. Also, the projecting portion 252 includes the low transmittance member described above. For this reason, in the X-ray photograph, the marking portion 250 is displayed with white characters against the background of the black projection portion 252 .

The second cover member 90 can be fitted to the fitting convex portion 116 (surface position) or rotated 180 degrees with respect to the surface position (back surface position). It can be fitted to the portion 116 . Therefore, in the present embodiment, the marking section 250 has at least two of at least one of characters, marks, and graphics, and at least one of the characters, marks, and graphics is reversed. It should be shown in the state.

Furthermore, the chemical injection port 1 has a connector portion 85 . The connector part 85 is a member for inserting a catheter (not shown) to attach the catheter to the drug solution injection port 1 . For this reason, the tip of the connector portion 85 has an arrowhead shape to prevent the catheter (not shown) from coming off.
The outer diameter of the catheter (not shown) matches the inner diameter of the first hole 116a of the fitting projection 116 through which the catheter is inserted. Therefore, by inserting a catheter into the first hole portion 116a and inserting the connector portion 85, the catheter (not shown) enters between the inner wall of the first hole portion 116a and the outer periphery of the connector portion 85, and the connector portion 85 is It is fixed inside the first hole portion 116a.

The lock top 32 is a cover-like soft resin member that transmits visible light and covers at least a portion of the second cover member 90 fitted to the first cover member 80 . The soft resin member is made of soft resin. Examples of the soft resin material used for the lock top 32 include polyvinyl chloride, olefin elastomer, styrene elastomer, vinyl acetate, and silicone rubber. By using a soft resin as the material for the lock top 32, it is possible to prevent damage to both the locking member 200 and the body of the subject. In addition, since the lock top 32 transmits visible light, the inside of the lock top 32 can be visually confirmed by the operator, thereby facilitating the operation of connecting the catheter.

[Indwelling medical device set]
Next, an indwelling medical device set using the indwelling medical devices described above will be described. The indwelling medical device set of this embodiment includes a drug solution injection port 1 and a plurality of label portions 22 . At least some of the plurality of labeling portions 22 indicate different labeling bodies 222, respectively. In the indwelling medical device set of this embodiment, at least one of the markers 222 is attached to the liquid injection port 1 and used.
In other words, in the indwelling medical device set of the present embodiment, the liquid injection port 1 is provided together with the plurality of marking portions 22 . Each of the plurality of labeling portions 22 indicates at least one of characters, marks, and graphics indicating the specifications, performance (withstanding pressure, etc.), model, manufacturer or distributor, and indwelling state of the liquid injection port 1 . At least part of the plurality of labeling portions 22 indicates information about the liquid injection port 1 different from that of the other labeling portions 22, or the same information in a form different from that of the other labeling portions 22 (for example, characters and symbols). ing.
In the indwelling medical device set of this embodiment, some of the plurality of labeling sections 22 may indicate the same information as the other labeling sections 22 in the same format. In this way, a spare label portion 22 that is frequently used can be provided together with the liquid injection port 1 as a set.

In addition, in this embodiment, the plurality of label portions 22 may have the label bodies 222 made up of the same label body portion (character), and the character strings filled with the low-transmittance members may be different. . For example, as shown in FIG. 7, when the label 222 is "CHEMICAL EX", the indwelling medical device set includes a label portion filled with a low-transmittance member only in the "CHEMICAL" portion and the "EX" portion. It is possible to provide three sets of a labeling portion filled with a low-transmittance member only in the inner portion and a labeling portion filled with a low-transmittance member only in the “MIC” portion together with the liquid injection port 1 .

When configured as described above, the operator can arbitrarily select any one of the plurality of marker portions 22 and set the selected marker portion 22 in the long groove 223 for use. In this embodiment, the operator can arbitrarily select the labeling portion 22 according to the maintenance of the liquid injection port 1 and the usage pattern after indwelling.

The above embodiments and examples include the following technical ideas.
<1> An indwelling medical device to be left in the body, the indwelling medical device comprising: a main body including a base enclosing at least part of a storage space; a lid covering the storage space together with the base; and a labeling section including a labeling body that is at least one of characters, marks, or graphics related to A visible portion that is visible under X-ray observation, and a non-visible portion that is difficult to see under X-ray observation due to substantially the same X-ray transmittance between the label and the surrounding area of the label. an indwelling medical device.
<2> The indwelling medical device according to <1>, wherein the visible portion includes a low-transmittance member having a lower X-ray transmittance than the main body.
<3> The visible part and the non-visible part have recesses corresponding to the marker or the surrounding area, and the visible recess that is the recess of the visible part and the non-visible recess that is the recess of the non-visible part The indwelling medical device according to <2>, wherein the low-transmittance member is selectively filled in the visible recesses among the recesses.
<4> The indwelling medical device according to <2>, wherein the label section includes a plurality of character strings as the marker body, and the low transmittance member is included as part of the plurality of character strings.
<5> The indwelling medical device according to any one of <1> to <4>, wherein the visible portion and the non-visible portion indicate different information.
<6> The indwelling medical device according to any one of <1> to <5>, wherein the label part is attached to the base or the lid.
<7> The indwelling medical device according to any one of <1> to <6>; An indwelling medical device set, at least one of which is attached to the indwelling medical device.

Reference Signs List 1... Liquid injection port 10... Enclosing part 12... Lid body 14... Base part 15... Outer base part 16... Inner base part 20... Diaphragm part 20a... Convex part 21. Lower surface 22, 200 Marking portion 22a Upper surface 23a, 23b Thread hooking portion 32 Lock top 36 Channel hole 50 Liquid reservoir 52 Bottom 59... Opening 60... Upper frame 70... Lower frame 80... First cover member 85... Connector part 90... Second cover member 100... Body 116... Fitting Joint projection 116a First hole 152 Recess 161 Main body 161a Step 162 Overhang 200 Locking member 221 Surrounding region 222 Marking bodies 222a to 222j Marking body part 223 Long groove 250 Marking parts 251a, 251b Notch 252 Overhanging part

Claims (5)

An indwelling medical device that is left in the body,
a main body including a base that encloses at least part of a storage space, and a lid that covers the storage space together with the base;
a diaphragm portion that is press-fitted into the main body and is punctured by a puncture needle ;
a labeling unit including a labeling body that is at least one of characters, marks, or graphics related to the indwelling medical device;
The labeling portion includes a visual recognition portion that is visually recognized under X-ray observation due to the difference in X-ray transmittance between the label and the surrounding area of the label, and the label and the surrounding area of the label. a non-visible portion that is difficult to see under X-ray observation due to substantially the same X-ray transmittance ;
The visual recognition part includes a low transmittance member having a lower X-ray transmittance than the main body,
The visible part and the non-visible part have a recess corresponding to the marker or the surrounding area, and the visible recess that is the recess of the visible part and the non-visible recess that is the recess of the non-visible part , the visible recess is a filled portion of the low transmittance member, the non-visible recess is a non-filled portion of the low transmittance member,
An indwelling medical device , wherein the visible recess and the non-visible recess are provided inside the main body . The labeling portion includes a character string represented by a plurality of characters as the labeling body, and the characters of part of the character string are the visible recesses that are filling portions of the low-transmittance member, and the other part of the character string. 2. The indwelling medical device according to claim 1 , wherein the character of is the non-visible recess that is the non-filled portion of the low transmittance member . The visible part and the non-visible part show different information for identifying the indwelling medical device, and the amount of the information represented by the non-visible part is greater than the amount of the information represented by the visible part. The indwelling medical device according to claim 1 or 2 . The indwelling medical device according to any one of claims 1 to 3 , wherein the label portion is attached to the base portion or the lid body. The indwelling medical device according to any one of claims 1 to 4 ;
and a plurality of the labeling units,
An indwelling medical device set, wherein at least some of the plurality of labeling units each indicate a different label, and at least one of them is attached to the indwelling medical device for use.

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