JP2020162779A - Mounting instrument - Google Patents

Abstract

To provide a mounting instrument capable of reducing an infection risk due to the exposure of a puncture hole, and easily maintaining a mounting state on a living body surface during a water-removing treatment.SOLUTION: A mounting instrument comprises a mounting body having a mounting surface mounted on a living body surface, and a movable member having a needle part insertable into the living body surface, and held movably to the mounting body. The movable member is movable to the mounting body between an insertion position in which the needle part projects from the mounting surface, and an extraction position in which the needle part does not project from the mounting surface. The movable member is formed with at least one through hole penetrating in the longer direction of the needle part.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to a mounting device.

Conventionally, it has been known that congestion occurs in the face and limbs due to, for example, congestive heart failure. Treatment to remove water using a diuretic is generally performed for such congestion.

Patent Document 1 discloses a device for receiving a fluid from the skin or a fluid from under the skin from a subject. Further, Patent Document 2 discloses a device for extracting body fluid from the body, which includes an array of a plurality of microneedles.

Japanese Patent Publication No. 2014-501555 Special Table 2017-509449

As a treatment for congestion associated with heart failure, the above-mentioned treatment using only diuretics may not be able to completely remove water, and congestion may remain. Residual congestion can lead to damage to organs and further exacerbate heart failure.

On the other hand, it is conceivable to use the devices described in Patent Documents 1 and 2. Specifically, it is conceivable to perform water removal treatment using a device that punctures and removes the needle portion into the living body after being attached to the surface of the living body and takes out body fluid through a puncture hole formed on the surface of the living body. According to the devices described in Patent Documents 1 and 2, since the puncture hole is not exposed, the risk of infection from the puncture hole can be reduced. However, if an external force acts on the devices disclosed in Patent Documents 1 and 2 during the water removal treatment, the mounting position of the device fluctuates on the surface of the living body, or the device falls off from the surface of the living body. , There is a risk. If the mounting position of the device changes, the water removal efficiency of the water removal treatment may decrease. Also, if the device falls off the surface of the living body, it is difficult to reattach the device in an appropriate position to cover the puncture hole. Therefore, it may be necessary to form a new puncture hole on the surface of the living body by not only reattaching the device but also puncturing and removing the needle portion again.

An object of the present disclosure is to provide a wearing device that can reduce the risk of infection due to exposure of a puncture hole and that can easily maintain a wearing state on the surface of a living body during water removal treatment.

The mounting device as the first aspect of the present disclosure includes a mounting body having a mounting surface mounted on the surface of the living body and a needle portion that can be inserted into the surface of the living body, and is movably held with respect to the mounting body. The movable member includes an insertion position in which the needle portion protrudes from the mounting surface and an extraction position in which the needle portion does not protrude from the mounting surface. The movable member is movable with respect to the main body, and the movable member is formed with at least one through hole penetrating in the longitudinal direction of the needle portion.

In one embodiment of the present disclosure, the at least one through hole includes a through hole that penetrates the needle portion in the longitudinal direction.

In one embodiment of the present disclosure, the movable member comprises a needle support portion that supports the proximal end of the needle portion, and the at least one through hole does not penetrate the needle portion in the longitudinal direction. Includes a through hole that penetrates the needle support portion in the longitudinal direction.

As one embodiment of the present disclosure, the mounting body partitions an internal space for accommodating the movable member, and the mounting body is formed with a suction opening for communicating the outside and the internal space. ..

As one embodiment of the present disclosure, the movable member includes a plurality of the needle portions, and a needle tip collecting surface composed of all the needle tips of the plurality of needle portions is composed of a curved surface.

According to the present disclosure, it is possible to provide a wearing device that can reduce the risk of infection due to the exposure of the puncture hole and can easily maintain the wearing state on the surface of the living body during the water removal treatment.

It is a figure which shows the outline of the water removal treatment performed by using the wearing device as one Embodiment of this disclosure. It is a perspective view of the mounting instrument shown in FIG. It is a side view of the attachment device shown in FIG. 1 in a state of being attached to the surface of a living body. It is a schematic diagram which shows the outline of the internal mechanism about the mounting instrument shown in FIG. 1, and is the figure which shows the state which the movable member is in a pull-out position. It is a schematic diagram which shows the outline of the internal mechanism about the mounting instrument shown in FIG. 1, and is the figure which shows the state which the movable member is in the insertion position. It is a detailed cross-sectional view which shows the detail of the movable member in the state shown in FIG. It is a figure which shows the 1st modification of the wearing device shown in FIG. It is a figure which shows the 2nd modification of the wearing device shown in FIG.

Hereinafter, embodiments of the medical wearing device according to the present disclosure will be illustrated with reference to the drawings. The same reference numerals are given to common members and parts in each figure.

FIG. 1 is a diagram showing an outline of water removal treatment performed by using the wearing device 1 as the first embodiment of the wearing device according to the present disclosure. The wearing device 1 is used by being attached to the biological surface BS of the patient P who is hospitalized due to heart failure such as congestive heart failure. FIG. 1 shows an outline of the water removal treatment performed by using the wearing device 1 mounted on the lower crotch of the patient P. Details will be described later, but according to the wearing device 1, the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6) is removed from the body while the needle portion 11 (see FIG. 4 etc.) is punctured. Can be done. The water removal treatment shown in FIG. 1 can be performed in addition to or in place of, for example, water removal treatment with a diuretic, tolvaptan, or the like. Further, the water removal treatment shown in FIG. 1 is performed in a predetermined cycle, for example, once every two or three days, depending on the state of edema of patient P. The time required for one water removal treatment shown in FIG. 1 varies depending on the state of edema of patient P, but may be several hours, for example, 2 to 8 hours. The attachment device 1 is attached to the biological surface BS only when the water removal treatment shown in FIG. 1 is being performed. That is, the patient P wears the wearing device 1 only when performing the water removal treatment during hospitalization.

In the water removal treatment shown in FIG. 1, the water accumulated in the interstitium is discharged to the outside of the body while the wearing device 1 is attached to the biological surface BS. This water removal treatment can be performed, for example, by connecting a suction device 100 arranged outside the body to the wearing device 1 via a suction tube 101 or the like. By sucking with this suction device 100, the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6) is removed from the body while the needle portion 11 (see FIG. 4 etc.) is punctured from the living body surface BS into the living body. Can be discharged. The details of this water removal treatment will be described later.

FIG. 2 is a perspective view of the mounting device 1 shown in FIG. In FIG. 2, for convenience of explanation, the suction tube 101 connected to the mounting device 1 is also shown. FIG. 3 is a side view of the mounting device 1 mounted on the biological surface BS. FIG. 4 is a schematic view showing an outline of the internal mechanism of the wearing device 1 mounted on the biological surface BS. In FIG. 4, each part of the mounting device 1 is shown in a size different from the actual size for easy understanding. Further, FIG. 4 shows a state in which the movable member 3 of the mounting device 1 is in the removed position. FIG. 5 shows a state in which the movable member 3 of the mounting device 1 shown in FIG. 4 is moved from the removal position to the insertion position. FIG. 6 is a detailed cross-sectional view showing the details of the movable member 3. FIG. 6 shows a state in which the needle portion 11 of the movable member 3 is punctured by the living body from the living body surface BS, that is, the same state as the movable member 3 shown in FIG.

As shown in FIGS. 2 to 6, the mounting device 1 includes a mounting body 2 and a movable member 3. The mounting body 2 includes a mounting surface 2a that is mounted on the biological surface BS. The movable member 3 is movably held with respect to the mounting body 2. Further, the movable member 3 includes a needle portion 11 that can be inserted into the biological surface BS. The mounting surface 2a means a surface in contact with the biological surface BS in a state where the mounting device 1 is mounted on the biological surface BS, and is not necessarily integrated by adhesion or the like.

The movable member 3 of the present embodiment includes a plurality of needle portions 11, but the number of needle portions 11 is not particularly limited, and the movable member 3 may include at least one or more needle portions 11. However, the wearing device 1 has a plurality of needles in order to remove the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6) to the outside of the body through the puncture hole formed by the needle portion 11 being punctured by the living body. It is preferable to provide the portion 11. As a result, the number of puncture holes can be increased and the water removal efficiency can be improved.

The movable member 3 can move between the insertion position and the removal position with respect to the mounting body 2. The insertion position is a position where the needle portion 11 protrudes from the mounting surface 2a of the mounting body 2 (see FIG. 4). The removal position is a position where the needle portion 11 does not protrude from the mounting surface 2a of the mounting body 2 (see FIG. 5).

As shown in FIG. 6, the movable member 3 is formed with a plurality of through holes H penetrating in the longitudinal direction A of the needle portion 11. Although the details will be described later, in the movable member 3 of the present embodiment, the through hole h1 penetrating in the longitudinal direction A of the needle portion 11 at the position of the needle portion 11 and the length of the needle portion 11 at a position different from the needle portion 11 Both a through hole h2 penetrating in the direction A and a through hole h2 are formed.

As described above, since the movable member 3 of the mounting device 1 is formed with a through hole H penetrating the needle portion 11 in the longitudinal direction A, the needle portion 11 remains punctured from the living body surface BS into the living body. Through the through hole H, the water accumulated in the interstitium of the subcutaneous tissue ST can be removed from the body (see the broken line arrow in FIG. 6). In addition, the needle portion 11 can be left in a state of being punctured into the living body during the water removal treatment. Therefore, even if an external force acts on the mounting device 1 during the water removal treatment, the mounting position of the mounting device 1 on the biological surface BS is unlikely to change, and the detachment from the biological surface BS can be suppressed. That is, according to the wearing device 1, the risk of infection due to the exposure of the puncture hole formed in the living body can be reduced, and the wearing state on the living body surface BS during the water removal treatment can be easily maintained.

Hereinafter, further details of the mounting device 1 of the present embodiment will be described.

[Mounting body 2]
The mounting body 2 of the present embodiment includes a housing 21 and a mounting member 22. The mounting surface 2a of the mounting body 2 of the present embodiment is composed of a mounting member 22.

The housing 21 of the mounting body 2 partitions an internal space 21a for accommodating the movable member 3. Further, the housing 21 of the mounting body 2 is formed with a suction opening 41a that communicates the outside and the internal space 21a.

Further, in the internal space 21a of the housing 21 of the mounting body 2, one end on the living body surface BS side is an open end, and the needle portion 11 of the movable member 3 moves to the outside of the mounting body 2 through the opening of the open end. Protrudes. By this protruding operation, the movable member 3 moves from the removal position to the insertion position. The details will be described later.

More specifically, the housing 21 of the present embodiment includes a housing body 31 and a lid 32.

The housing main body 31 includes a peripheral wall portion 41, a top wall portion 42, an inner protruding portion 43, and a locking protruding portion 44.

The peripheral wall portion 41 is a square tubular frame portion that surrounds the periphery of the movable member 3. As shown in FIG. 2 and the like, the peripheral wall portion 41 is formed with the above-mentioned suction opening 41a that communicates the outside and the internal space 21a. Through the suction opening 41a, the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6) can be discharged to the outside of the housing 21. The details will be described later.

The top wall portion 42 is continuously provided at one end of the square tubular peripheral wall portion 41. An opening is formed in the center of the top wall portion 42. A lid 32 is provided in the opening of the top wall portion 42. The lid 32 is attached to the top wall 42 by a hinge 33 so that the opening of the top wall 42 can be opened and closed.

The top wall portion 42 comes into contact with the movable member 3 and prevents the movable member 3 from coming off from the housing 21 of the mounting body 2 in the removal direction A1 (one side of the longitudinal direction A) of the needle portion 11. Suppress. That is, the top wall portion 42 constitutes a stopper portion that regulates the movement of the movable member 3 in the removal direction A1.

The inner protruding portion 43 projects inward from the other end of the peripheral wall portion 41, that is, from the open end of the peripheral wall portion 41 on the living body surface BS side.

The locking projection 44 projects from the inner surface of the peripheral wall portion 41. The movable member 3 is maintained in the removed position by supporting the needle support portion 51, which will be described later, by the locking protrusion 44. By pressing the movable member 3 in the insertion direction A2 with a predetermined pressing force from the state shown in FIG. 4, the movable member 3 can get over the locking projection 44 and move to the insertion position shown in FIG.

The peripheral wall portion 41, the top wall portion 42, the inner protruding portion 43, and the locking protruding portion 44 of the housing body 31 may be integrally molded with, for example, a resin material. Examples of the material of the housing body 31 include polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymer; ethylene-vinyl acetate copolymer (EVA); polyvinyl chloride; polyvinylidene chloride; polystyrene; polyamide; polyimide; polyamide. Iimide; Polycarbonate; Poly- (4-methylpentene-1); Ionomer; Acrylic resin; Polymethylmethacrylate; Acrylonitrile-butadiene-styrene copolymer (ABS resin); Acrylonitrile-styrene copolymer (AS resin); butadiene- Styrene copolymers; polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycyclohexane terephthalate (PCT); polyether; polyetherketone (PEK); polyetheretherketone (PEEK); polyetherimide; Polyacetal (POM); polyphenylene oxide; modified polyphenylene oxide; polysulfone; polyethersulfone; polyphenylene sulfide; polyallylate; aromatic polyester (liquid crystal polymer); polytetrafluoroethylene, polyvinylidene fluoride, and other fluororesins; Resin material can be mentioned.

As described above, the lid 32 is attached so that the opening of the top wall portion 42 of the housing body 31 can be opened and closed. By opening the lid 32 to the housing body 31, the internal space 21a of the housing 21 communicates with the outside through the opening of the top wall 42.

The lid 32 of the present embodiment is formed with an operation groove portion 32a that is operated at the time of opening and closing. By hooking a finger on the operation groove portion 32a, the lid body 32 can be easily opened and closed.

When the lid 32 is closed with respect to the housing body 31, it is preferable that a sealing member is interposed between the housing body 31 and the lid 32. By doing so, the airtightness of the internal space 21a can be enhanced. As a result, the internal space 21a can be easily decompressed in the water removal treatment, and the water removal efficiency can be improved.

As the material of the lid 32, the above-mentioned material that can be used for the housing body 31 can be used. The housing body 31 and the lid 32 may be made of the same material, or may be made of different materials.

The mounting member 22 can be composed of an adhesive member laminated on the open end surface of the peripheral wall portion 41 on the biological surface BS side and the surface of the inner protruding portion 43 on the biological surface BS side. The mounting member 22 can be composed of, for example, an adhesive sheet as an adhesive member in which an adhesive layer is laminated on a sheet-shaped resin base material (for example, a polyurethane film).

However, the mounting member 22 may be composed of an adhesive applied to the open end surface of the peripheral wall portion 41 on the biological surface BS side and the surface of the inner protruding portion 43 on the biological surface BS side.

In the present embodiment, the mounting surface 2a of the mounting body 2 mounted on the biological surface BS is composed of the surface of the mounting member 22 on the biological surface BS side.

[Movable member 3]
The movable member 3 includes the above-mentioned needle portion 11. Further, the movable member 3 of the present embodiment is movably held with respect to the above-mentioned housing 21 of the mounting body 2. More specifically, the movable member 3 of the present embodiment can move in the longitudinal direction A of the needle portion 11 in a state of being housed in the internal space 21a of the housing 21.

Specifically, the movable member 3 of the present embodiment includes a needle support portion 51, a plurality of needle portions 11 projecting from the needle support portion 51 in one direction, and a grip portion 52.

The needle support portion 51 of the present embodiment is located in the peripheral wall portion 41 of the housing body 31 of the housing 21, and the needle portion 11 is removed in the removing direction A1 and the insertion direction A2 (the side opposite to the removing direction A1 in the longitudinal direction A). It is possible to move in the direction of). The needle support portion 51 of the present embodiment is restricted from moving further in the removal direction A1 by coming into contact with the top wall portion 42 of the housing body 31 as a stopper portion. Therefore, the movable member 3 does not fall out from the housing body 31 of the housing 21 in the removal direction A1.

Further, the needle support portion 51 of the present embodiment is restricted from moving further in the insertion direction A2 by coming into contact with the inner protruding portion 43 of the housing body 31. Therefore, the movable member 3 does not fall out from the housing body 31 of the housing 21 in the insertion direction A2.

The needle support portion 51 supports the base end of the needle portion 11. In other words, the needle portion 11 projects from the needle support portion 51 in the insertion direction A2. Therefore, the needle portion 11 moves following the movement of the needle support portion 51 in the removal direction A1 and the insertion direction A2. As shown in FIG. 4, the needle tip 11a of the needle portion 11 is located in the internal space 21a of the housing 21 in a state where the needle support portion 51 is supported by the locking protrusion 44. On the other hand, as shown in FIG. 5, the needle tip 11a of the needle portion 11 protrudes outward from the internal space 21a of the housing 21 in a state where the needle support portion 51 is in contact with the inner protruding portion 43. It becomes.

In other words, the movable member 3 is between the insertion position where the needle portion 11 protrudes from the mounting surface 2a (see FIG. 5) and the removal position where the needle portion 11 does not protrude from the mounting surface 2a (see FIG. 4). Can be moved. Further, the movable member 3 of the present embodiment is maintained in the removed position by setting the needle support portion 51 to be supported by the locking protrusion 44. On the other hand, in the movable member 3 of the present embodiment, the locked state in which the needle supporting portion 51 is supported by the locking protrusion 44 is released and pushed in the insertion direction A2, so that the movable member 3 is pushed from the removal position to the insertion position. (See the white arrow in FIG. 5). Further, the movable member 3 of the present embodiment includes a grip portion 52 projecting from the needle support portion 51 on the removal direction A1 side. Therefore, the grip portion 52 is gripped, pulled up in the removal direction A1 by an external force, and the needle support portion 51 is brought into a locked state in which the needle support portion 51 is again supported by the locking projection 44, so that the movable member 3 of the present embodiment is , Can be moved again from the insertion position to the removal position.

In the present embodiment, the above-mentioned series of operations of the movable member 3 can be performed by keeping the lid 32 open with respect to the housing body 31.

The needle support portion 51 and the grip portion 52 can be formed from the same resin material as the material of the housing body 31 described above. Further, the needle support portion 51 and the grip portion 52 may be formed of the same metal material as the needle portion 11.

The maximum outer diameter of the needle portion 11 is preferably 0.1 mm to 0.3 mm, more preferably 0.1 mm to 0.18 mm. By setting the maximum outer diameter of the needle portion 11 to 0.1 mm or more, the puncture hole in the state where the needle portion 11 is inserted does not become too small. Therefore, the suction amount of the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6) per unit time can be secured to a predetermined amount or more. Further, by setting the maximum outer diameter of the needle portion 11 to 0.3 mm or less, the puncture resistance of the needle portion 11 can be reduced, and the pain felt by the patient P at the time of puncture can be reduced.

The punctureable length of the needle portion 11 is preferably 0.2 mm to 1.5 mm. By setting the punctureable length of the needle portion 11 to 0.2 mm or more, it becomes easy for the needle tip 11a of the needle portion 11 to penetrate the epidermis S (see FIG. 6) and reach the dermis D (see FIG. 6). Therefore, it becomes easy to suck the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6). Further, by setting the punctureable length of the needle portion 11 to 1.5 mm or less, it is possible to make it difficult for the needle tip 11a of the needle portion 11 to reach the subcutaneous tissue ST (see FIG. 6). Therefore, the pain felt by the patient P can be reduced.

Further, the needle portion 11 of the present embodiment is a tapered needle that tapers toward the needle tip 11a, but may have a shape having a uniform outer diameter in the longitudinal direction. As the material of the needle portion 11, a metal material such as stainless steel, aluminum or aluminum alloy, titanium or titanium alloy can be used.

Next, with reference to FIG. 6, the details of the through hole H formed in the movable member 3 of the present embodiment will be described. As described above, the movable member 3 is formed with at least one through hole H penetrating in the longitudinal direction A. Two types of through holes H are formed in the movable member 3 of the present embodiment. The first type of through hole H is a through hole h1 that penetrates the needle portion 11 in the longitudinal direction A. The second type of through hole H is a through hole h2 that does not penetrate the needle portion 11 in the longitudinal direction A but penetrates the needle support portion 51 in the longitudinal direction A. Hereinafter, in order to distinguish the through holes h1 and h2, the through hole h1 will be referred to as a “first through hole h1” and the through hole h2 will be referred to as a “second through hole h2” for convenience of explanation.

By providing the through hole H in the movable member 3, it is possible to drain the water accumulated in the interstitium of the subcutaneous tissue ST to the outside of the body while the needle portion 11 is punctured into the living body (broken line in FIG. 6). See arrow). Specifically, if the internal space 21a of the housing 21 (see FIG. 5) is placed in a negative pressure state with the needle portion 11 punctured into the living body, the water accumulated in the interstitium is sucked up through the first through hole h1. Can be done. Further, the water discharged on the biological surface BS along the peripheral surface of the needle portion 11 can also be sucked up through the second through hole h2. As described above, according to the mounting device 1 of the present embodiment, the internal space 21a is depressurized by using the suction opening 41a (see FIG. 5) located on the removal direction A1 side of the movable member 3. Through the first through hole h1 and the second through hole h2, the water accumulated in the interstitium of the subcutaneous tissue ST can be discharged to the outside of the body.

In the present embodiment, the first through hole h1 is formed in all the needle portions 11 of the movable member 3, but the first through hole h1 may be formed only in a part of the needle portions 11. However, from the viewpoint of increasing the water removal efficiency, it is preferable to provide the first through hole h1 in all the needle portions 11.

The position where the second through hole h2 is formed is not particularly limited as long as the needle portion 11 is not provided, but it is preferably provided at a position between the plurality of needle portions 11. By doing so, the water discharged from the periphery of the plurality of needle portions 11 onto the biological surface BS can be efficiently discharged to the outside of the body by sharing one second through hole h2. Further, in a plan view of the movable member 3 in the longitudinal direction A, the position of the second through hole h2 is preferably an intermediate position between the two adjacent first through holes h1. By doing so, the variation in the position of the through hole H on the biological surface BS can be suppressed, and the water can be uniformly discharged to the outside of the body from the entire puncture region where the plurality of needle portions 11 are punctured.

The inner diameter of each through hole H of the present embodiment is constant over the entire area of the longitudinal direction A, but may differ depending on the position of the longitudinal direction A. For example, the inner diameter of each through hole H may gradually decrease or gradually increase toward the extraction direction A1. Further, for example, the shape of the first through hole h1 may be tapered along the shape of the needle portion 11. By doing so, the amount of body fluid that can be discharged from the first through hole h1 per unit time is increased as compared with the case where the inner diameter of the first through hole h1 is constant, and the water removal efficiency can be improved.

The inner diameter of the first through hole h1 is preferably 0.08 mm to 0.28 mm, more preferably 0.08 mm to 0.15 mm. The inner diameter of the second through hole h2 is preferably 0.1 mm to 1.0 mm, for example. The inner diameter of the second through hole h2 is preferably larger than the inner diameter of the first through hole h1. From the viewpoint of piercing resistance, the outer diameter of the needle portion 11 is preferably small, so that the inner diameter of the first through hole h1 is also preferably small. On the other hand, when the inner diameter of the first through hole h1 becomes smaller, the amount of body fluid that can be discharged from the first through hole h1 per unit time decreases, and the water removal efficiency decreases. Therefore, by enlarging the second through hole h2, it is possible to secure the water removal efficiency of the first through hole h1 and the second through hole h2 as a whole. Therefore, it is preferable that the inner diameter of the second through hole h2 is larger than the inner diameter of the first through hole h1.

[Water removal treatment using wearing device 1]
Next, the details of the water removal treatment performed by using the wearing device 1 of the present embodiment will be described.

As shown in FIG. 1, when performing water removal treatment on patient P, the wearing device 1 is attached to the target site of patient P, for example, the lower crotch.

When the mounting device 1 is mounted on the biological surface BS, the movable member 3 is in the removed position (see FIG. 4). From this state, the movable member 3 is pressed in the insertion direction A2 to move the movable member 3 to the insertion position (see the white arrow in FIG. 5). As a result, the needle portion 11 can be punctured into the biological surface BS. The needle tip 11a of the needle portion 11 penetrates the epidermis S (see FIG. 6) and reaches the dermis D (see FIG. 6).

Then, in a state where the needle portion 11 is punctured by the living body (see FIG. 5), the internal space 21a of the housing 21 of the mounting body 2 is put into a negative pressure state. As a result, the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6) is transferred to the movable member 3 through the plurality of through holes H (in the present embodiment, the plurality of first through holes h1 and the plurality of second through holes h2). Is sucked up to the portion of the internal space 21a on the removal direction A1 side of the movable member 3. That is, the water accumulated in the interstitium of the subcutaneous tissue ST (see FIG. 6) can be discharged to the outside of the body through the plurality of through holes H while the needle portion 11 is punctured into the living body. Specifically, one end of the suction tube 101 is connected to the suction opening 41a of the housing body 31 of the housing 21. Further, the other end of the suction tube 101 is connected to the suction device 100 (see FIG. 1). In this state, the internal space 21a of the housing 21 can be brought into a negative pressure state by sucking with the suction device 100. The water sucked up in the internal space 21a of the housing 21 is sucked into the suction device 100 through the suction tube 101.

One water removal treatment can be completed by continuously performing the above-mentioned suction by the suction device 100, for example, for 2 to 8 hours.

Next, the mounting device 201 as the first modification of the mounting device 1 described above will be described with reference to FIG. 7A. As shown in FIG. 7A, the mounting device 201 includes a mounting body 2 and a movable member 203. The mounting device 201 shown in FIG. 7A differs from the mounting device 1 shown in FIG. 4 or the like only in the configuration of the movable member 203. FIG. 7A is drawn with the locking projection 44 (see FIG. 4) of the mounting body 2 omitted.

The movable member 203 shown in FIG. 7A includes a needle support portion 51, a plurality of needle portions 211 projecting from the needle support portion 51 in one direction, and a grip portion 52.

The needle tip gathering surface X composed of all the needle tips 211a of the plurality of needle portions 211 shown in FIG. 7A is composed of curved surfaces. The "needle tip collecting surface" means a virtual surface formed so as to pass through all the needle tips of a plurality of needle portions of the movable member. On the needle tip gathering surface X, the gap between the adjacent needle tips 211a is approximated so that all the needle tips 211a are smoothly connected.

More specifically, the needle support portion 51 shown in FIG. 7A has a flat plate shape. Further, the punctureable lengths of the plurality of needle portions 211 shown in FIG. 7A become shorter from the peripheral portion to the central portion. By doing so, as shown in FIG. 7A, the needle tip gathering surface X can be formed by a curved surface having a concave central portion.

However, the means for forming the needle tip collecting surface X by the curved surface is not limited to the means shown in FIG. 7A.

FIG. 7B is a diagram showing a mounting device 301 as a second modification of the mounting device 1 described above. In FIG. 7B, the needle support portion 351 has a curved plate shape. On the other hand, the punctureable lengths of the plurality of needle portions 11 shown in FIG. 7B are substantially uniform. As a result, the needle tip gathering surface X composed of a set of needle tips 11a of the plurality of needle portions 11 becomes a curved surface. By doing so, the needle tip collecting surface X composed of curved surfaces may be realized.

The mounting device according to the present disclosure is not limited to the specific configuration described in the above-described embodiment and modification, and can be variously modified or modified as long as it does not deviate from the scope of claims. For example, the housing 21 of the present embodiment described above includes a housing body 31 and a lid 32, but the lid 32 that can be opened and closed is not provided, and the top wall portion 42 that cannot be opened and closed is used. It may be covered. In such a case, for example, the movable member 3 may be pressed and moved in the insertion direction A2 by elastically deforming the top wall portion 42. Further, when the needle portion 11 is removed, the entire wearing device 1 may be removed from the living body surface BS after the water removal treatment is completed, and the needle portion 11 may be removed from the living body at the same time.

The present disclosure relates to a mounting device.

1, 201, 301: Mounting device 2: Mounting body 2a: Mounting surface 3, 203: Movable member 11, 211: Needle portion 11a, 211a: Needle tip 21: Housing 21a: Internal space 22: Mounting member 31: Housing body 32 : Lid 32a: Operation groove 33: Hinge 41: Peripheral wall 41a: Suction opening 42: Top wall 43: Inside protrusion 44: Locking protrusion 51, 351: Needle support 52: Grip 100: Suction device 101 : Suction tube A: Longitudinal direction of needle part A1: Needle part removal direction A2: Needle part insertion direction D: Dermis H: Through hole h1: First through hole h2: Second through hole P: Patient S: Epidermis X : Needle tip gathering surface BS: Living surface ST: Subcutaneous tissue

Claims (5)

A mounting body with a mounting surface that is mounted on the surface of the living body,
It is provided with a needle portion that can be inserted into the surface of the living body, and a movable member that is movably held with respect to the mounting body.
The movable member is movable with respect to the mounting body between an insertion position in which the needle portion protrudes from the mounting surface and an extraction position in which the needle portion does not protrude from the mounting surface.
A mounting instrument in which the movable member is formed with at least one through hole penetrating in the longitudinal direction of the needle portion. The mounting device according to claim 1, wherein the at least one through hole includes a through hole that penetrates the needle portion in the longitudinal direction. The movable member includes a needle support portion that supports the base end of the needle portion.
The mounting device according to claim 1 or 2, wherein the at least one through hole includes a through hole that does not penetrate the needle portion in the longitudinal direction but penetrates the needle support portion in the longitudinal direction. The mounting body partitions an internal space for accommodating the movable member.
The mounting device according to any one of claims 1 to 3, wherein a suction opening for communicating the outside and the internal space is formed in the mounting body. The movable member includes a plurality of the needle portions.
The mounting device according to any one of claims 1 to 4, wherein the needle tip collecting surface formed of all the needle tips of the plurality of needle portions is formed of a curved surface.

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