Hemostatic device

Abstract

To provide a hemostatic device capable of preventing a marginal part of a cover member from biting into a body surface of the limb when a patient wearing the hemostatic device moves the limb.SOLUTION: A pressing member 200 and a support member 300 of a hemostatic device 10 are positioned on an extension line of a first belt body part 410, and the pressing member is an expansion member 210 configured so as to be expanded by the injection of fluid. The expansion member includes a marker part 260 for positioning the expansion member to a first puncture site p1. The marker part is positioned more on a base end side than an intersection point Lp of a center line A1 of the first belt body part, a center line A2 of a second belt body part 420, and a center line A3 of a third belt body part 430 in a body part 110 where the expansion member is positioned.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a hemostatic device. [Background technology]

[0002] As one of the catheter techniques, a technique is known in which a blood vessel in a patient's limb such as an arm or a hand is punctured to form a puncture site, and various medical elongated objects are introduced into the blood vessel through the puncture site to perform treatment or therapy on the lesion site. For example, Patent Document 1 discloses a hemostatic device that stops bleeding at a puncture site formed to enable access to a blood vessel (including the distal radial artery) running through the hand.

[0003] The hemostatic device of Patent Document 1 includes a pressing member that applies a compressive force to a puncture site (hereinafter also simply referred to as "puncture site") formed on a patient's hand, and a cover member configured to cover the pressing member. The cover member also includes a plurality of band portions for fixing the pressing member to the patient's hand, and a support member that holds the pressing member against the patient's hand. The pressing member and the support member are disposed at predetermined positions on the cover member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] US Patent Application Publication No. 2019 / 0133602 Summary of the Invention [Problem to be solved by the invention]

[0005] When a surgeon such as a doctor (hereinafter referred to as the "surgeon") performs hemostasis at a puncture site formed in a patient's limb, the surgeon places a hemostatic device on the patient's limb so as to cover the puncture site with the cover member. When the surgeon places the hemostatic device so as to cover the puncture site with the cover member, the pressing member and support member located on the cover member are positioned at the puncture site. With the pressing member and support member positioned at the puncture site, the hemostatic device can perform hemostasis at the puncture site by the pressing member applying a compressive force to the puncture site.

[0006] When using the above-mentioned hemostatic device to stop bleeding, the following problems may arise.

[0007] When a patient wearing the hemostatic device moves a limb while hemostasis is being performed by the pressing member, the edge of the cover member may dig into the body surface of the limb of the patient. In particular, when the limb forming the puncture site is the hand, when the patient wearing the hemostatic device performs an action such as twisting the wrist toward the back of the hand, the base end of the cover member (the end located on the forearm side) digs into the body surface near the wrist. Therefore, the hemostatic device may cause the patient discomfort such as pain due to the base end of the cover member digging into the body surface of the limb.

[0008] The present invention has been made based on the above-mentioned problems, and aims to provide a hemostatic device that can prevent the edge of a cover member from digging into the body surface of a limb when a patient wearing the hemostatic device moves the limb. [Means for solving the problem]

[0009] A hemostatic device according to the present invention has a cover member configured to cover a puncture site formed in a patient, a pressing member disposed on the cover member and configured to press the puncture site, and a support member disposed on the cover member to cover the pressing member and made of a material harder than that of the pressing member, wherein the cover member has a main body portion in which the pressing member is located, a first band portion configured to be disposed between the patient's fingers and extending from the main body portion in a first direction, and a second band portion configured to be disposed between the patient's fingers and extending from the main body portion in a second direction different from the first direction, and a third band portion facing the second band portion across the pressing member and extending in a third direction different from the first direction and the second direction, wherein the pressing member and the support member are located on an extension of the first band portion, the pressing member is an expansion member configured to be expandable by injection of a fluid, the expansion member has a marker portion for aligning the expansion member with the puncture site, and the marker portion is located in the main body portion at the intersection of the center line of the first band portion, the center line of the second band portion, and the center line of the third band portion, or on the base side of the intersection. Effect of the Invention

[0010] In the hemostatic device, a pressing member that presses a puncture site formed in a patient is composed of an expansion member that can be expanded by injection of a fluid. The expansion member has a marker portion for aligning the expansion member with the puncture site, and the marker portion is located at the intersection point of the center line of the first band portion, the center line of the second band portion, and the center line of the third band portion, or on the proximal side of the intersection point, in the main body portion of the cover member. When the hemostatic device is fixed to the patient by each band portion, a pulling force is applied to the main body portion of the cover member in a direction in which each band portion moves away from the cover member with respect to the intersection point of the center lines of each band portion. The hemostatic device is configured such that a region of the expansion member that is placed at the puncture site of the patient (for example, near the center of the expansion member) is located at the intersection point of the center lines of each band portion, or at a position shifted toward the proximal side of the main body portion from the intersection point of the center lines of each band portion. Therefore, in the above-mentioned hemostatic device, when the expansion member expands, the maximum expansion part (for example, near the center of the expansion member) that expands the most in the expansion member is located at the intersection of the center lines of the band parts or at a position shifted from the intersection to the base end side of the main body part. The expansion member can lift the base end of the cover member by expanding in a state where the maximum expansion part of the expansion member is located at the intersection of the center lines of the band parts or at a position shifted from the intersection to the base end side of the main body part. As a result, when the expansion member expands, the above-mentioned hemostatic device can maintain an appropriate gap between the base end of the cover member and the patient's body surface. Therefore, when the patient performs an action while the hemostatic device is attached to the patient, the above-mentioned hemostatic device can prevent the base end of the cover member from digging into the patient's body surface. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a plan view showing the hemostatic device according to the embodiment, as viewed from the outer surface side of each band portion. [Diagram 2] FIG. 2 is a diagram showing a hemostatic device according to an embodiment, and is a plan view seen from the inner surface side of each band portion. [Diagram 3] 13 is an enlarged view of a portion of the hemostatic device as viewed from the outer surface side of the main body of the cover member. FIG. [Figure 4]13 is an enlarged view of a portion of the hemostatic device as viewed from the inner surface side of the main body of the cover member. FIG. [Diagram 5] 13 is an enlarged view of a portion of the hemostatic device as viewed from the outer surface side of the main body of the cover member. FIG. [Figure 6] 6A is a partial cross-sectional view of the hemostatic device taken along arrows 6A-6A in FIG. 5, illustrating the state when the expansion member is expanded. [Figure 7] 7A is a partial cross-sectional view of the hemostatic device taken along arrows 7A-7A in FIG. 5, illustrating the state when the expansion member is expanded. [Figure 8] FIG. [Figure 9] 4 is a perspective view of the support member as viewed from the lower end side. FIG. [Figure 10] FIG. 4 is a perspective view of the support member as viewed from the upper end side. [Figure 11] FIG. 4 is a perspective view showing the inner side of the support member. [Figure 12] FIG. 4 is a perspective view showing the inner side of the support member. [Figure 13] FIG. 1 shows a patient's hand (right hand) on which a hemostatic device is to be used. [Figure 14] 1A to 1C are diagrams illustrating a simplified example of how a hemostatic device is used. [Figure 15] 1A to 1C are diagrams illustrating a simplified example of how a hemostatic device is used. [Figure 16] 1A to 1C are diagrams illustrating a simplified example of how a hemostatic device is used. [Figure 17] FIG. 17 is a partial cross-sectional view taken along the arrows 17A-17A shown in FIG. [Figure 18] FIG. 18 is a partial cross-sectional view taken along the arrows 18A-18A shown in FIG. [Figure 19] FIG. 1 shows a patient's right hand with a hemostatic device attached. [Figure 20] FIG. 13 is an enlarged view of a portion of a hemostatic device according to a modified example. [Figure 21] 21A is a partial cross-sectional view taken along the arrows 21A-21A shown in FIG. 20. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The following description does not limit the technical scope or meaning of terms described in the claims. In addition, the dimensional ratios of the drawings are exaggerated for the convenience of explanation and may differ from the actual ratios.

[0013] 1 to 12 are views for explaining a hemostatic device 10 according to the present embodiment. Figs. 13 to 19 are views for explaining an example of use of the hemostatic device 10.

[0014] The hemostatic device 10 can be used, for example, to stop bleeding at a first puncture site p1 (hereinafter also referred to as "first puncture site p1") when removing a sheath tube 610 of an introducer 600 that has been placed at a first puncture site p1 formed in a hand H located distal (toward the fingertip) of a patient's forearm Ar, as shown in Figures 13, 16, 17, 18, and 19.

[0015] The specific location of the puncture site that is the target of hemostasis by the hemostatic device 10 is not particularly limited, but in this specification, a first puncture site p1 and a second puncture site p2 are given as examples.

[0016] As shown in Figures 13, 16, 17, 18, and 19, the first puncture site p1 is a puncture site formed in the distal radial artery (hereinafter also referred to as "blood vessel V1") located distal to the snuff box Sb of the palmar artery running on the back side of the right hand H1 located distal to the forearm Ar of the patient. The first puncture site p1 is located between the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb, and is located at a predetermined position avoiding the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb. The snuff box Sb is a cavity in the hand located near the radius when the patient spreads the thumb of the hand H.

[0017] As shown in Fig. 13, the second puncture site p2 is a puncture site formed in an artery V2 located at a snuff box Sb of a palmar artery running on the back side of a right hand H1. The second puncture site p2 is located closer to the patient's forearm Ar (proximal side) than the first puncture site p1, and is located between the extensor pollicis longus tendon T1 and the extensor pollicis brevis tendon T2 located on the back of the patient's right hand H1. The second puncture site p2 is located at a predetermined position avoiding the positions of the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb.

[0018] In addition, the hemostatic device 10 can also be used to stop bleeding at a puncture site formed on the patient's left hand at a position corresponding to the first puncture site p1 exemplified by the patient's right hand H1, or at a puncture site formed on the patient's left hand at a position corresponding to the second puncture site p2 exemplified by the patient's right hand H1.

[0019] The hemostatic device 10 will now be described in more detail.

[0020] <Hemostatic device> Generally speaking, as shown in Figures 1, 2, 16, 17, 18, and 19, the hemostatic device 10 comprises a cover member 100 configured to cover the first puncture site p1, a pressing member 200 connected to the cover member 100 and configured to press the first puncture site p1, and a support member 300 disposed on the cover member 100 to cover the pressing member 200 and made of a material harder than the material of the pressing member 200.

[0021] In this specification, when the hemostatic device 10 is attached to the patient's right hand H1, the side of the fingertips is defined as the "distal side" and the side of the forearm Ar is defined as the "base side." The "distal side" and "base side" used in the description of the hemostatic device 10 are defined in the same way as the directions defined above.

[0022] <Pressing member> 6 and 7, the pressing member 200 can be configured with an expansion member 210 configured to be expandable by injection of a fluid. In this embodiment, an example in which the pressing member 200 is configured with an expansion member 210 will be described.

[0023] The expansion member 210 has a lumen 210a into which a fluid can be injected. The expansion member 210 is configured to expand as fluid is injected into the lumen 210a, and to contract as the fluid injected into the lumen 210a is discharged. The fluid used to expand the expansion member 210 is, for example, a gas such as air. Figures 6 and 7 show cross-sectional views of the expansion member 210 in an expanded state.

[0024] A tube 283 (see FIGS. 1 and 2), which will be described later, is connected to the inner cavity 210a of the expansion member 210.

[0025] The expansion member 210 can be formed, for example, of a film-like member (sheet material) connected to the sheet material 120 that constitutes the main body portion 110 of the cover member 100, as shown in FIGS.

[0026] The expansion member 210 can be positioned to form a lumen 210a between itself and the underside region 132 of the retention portion 130 defined by the sheet material 120 .

[0027] The outer periphery of the membrane-like member that constitutes the expansion member 210 constitutes the edge portion 211 of the expansion member 210. The edge portion 211 of the expansion member 210 can be connected to the sheet material 120 by, for example, fusion or an adhesive.

[0028] The film-like member constituting the expansion member 210 can be made of, for example, a resin material having a predetermined thickness.

[0029] The material of the membrane-like member constituting the expansion member 210 is not particularly limited, but examples of the material that can be used include polyolefins such as polyvinyl chloride, polyethylene, polypropylene, polybutadiene, and ethylene-vinyl acetate copolymer (EVA); polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT); various thermoplastic elastomers such as polyvinylidene chloride, silicone, polyurethane, polyamide elastomer, polyurethane elastomer, and polyester elastomer; nylon; nylon elastomer; or any combination of these (blend resins, polymer alloys, laminates, etc.).

[0030] The expansion member 210 is disposed on the inner surface 110a side of the main body portion 110 of the cover member 100, as shown in FIGS.

[0031] In this embodiment, the inner surface 110a of the main body 110 is configured as a surface that is placed on the body surface side of the right hand H1 in the lower surface region 132 of the holding part 130 (see Figs. 17 and 18). The outer surface 110b of the main body 110 is configured as a surface that is placed facing the outside in the upper surface region 131 of the holding part 130.

[0032] The extension member 210 and the support member 300 are located on an extension line of the first band portion 410 in the plan view of Fig. 5. The above "located on an extension line of the first band portion 410" means that, assuming that the first band portion 410 is extended to the main body portion 110 of the cover member 100, the center line A1 of the first band portion 410 overlaps with at least a portion of the extension member 210 and the center line A1 of the first band portion 410 overlaps with at least a portion of the support member 300 in the plan view shown in Fig. 5.

[0033] Fig. 8 is a plan view of the support member 300 as viewed from the outer surface 300b side. Fig. 8 shows the positional relationship between the expansion member 210, the support member 300, and the holding part 130 in a contracted state. The expansion member 210 and the holding part 130 are indicated by two-dot chain lines.

[0034] When the expansion member 210 is in a contracted state, the expansion member 210 has a vertical width wa passing through the center c1 of the expansion member 210, and a horizontal width wb passing through the center c1 of the expansion member 210 while being perpendicular to the vertical width wa. Note that the above vertical width wa and horizontal width wb are dimensions that do not include the edge portion 211 located on the outer periphery of the expansion member 210, and refer to the vertical width wa and horizontal width wb of the outer shape of the expansion member 210 shown in the plan view of FIG.

[0035] The center c1 of the extension member 210 is located at the center of the outline shown in the plan view of FIG. 8. In this embodiment, the center c1 is located at the intersection of the center position of the axis (long axis) along the vertical width wa and the center position of the axis (short axis) along the horizontal width wb. In this embodiment, the center position of the axis (long axis) along the vertical width wa is a line segment passing through a point on the axis along the vertical width wa that is equidistant from both ends of the axis along the vertical width wa. In addition, the center position of the axis (short axis) along the horizontal width wb is a line segment passing through a point on the axis along the horizontal width wb that is equidistant from both ends of the axis along the horizontal width wb.

[0036] The extension member 210 has a horizontal width wb that is shorter than a vertical width wa. In this embodiment, the extension member 210 has a substantially elliptical shape that is rotationally symmetric about a center c1 in the plan view shown in FIG.

[0037] As shown in FIGS. 16, 17, and 18, the expansion member 210 has a marker portion 260 for aligning the expansion member 210 with the first puncture site p1.

[0038] As shown in Figures 5 and 8, in the main body portion 110, the marker portion 260 is located on the base end side of the intersection point Lp (hereinafter also simply referred to as "intersection point Lp") between the center line A1 of the first band portion 410, the center line A2 of the second band portion 420, and the center line A3 of the third band portion 430.

[0039] In this embodiment, as shown in Fig. 8, the marker portion 260 is located at a position overlapping with the center c1 of the expansion member 210. Near the center c1 of the expansion member 210, a maximum expansion portion that expands to a position farthest from the body surface of the patient's right hand H1 when the expansion member 210 expands is located (see Figs. 5 and 6).

[0040] 8, the marker portion 260 is located closer to the base end of the main body portion 110 than the center of gravity G1 of the support member 300. In this embodiment, the center of gravity G1 of the support member 300 is located closer to the tip end of the main body portion 110 than the intersection point Lp.

[0041] As shown in FIGS. 4 and 8, the marker portion 260 can be composed of a transparent central portion surrounding a center c1 and a colored circular frame portion surrounding the central portion.

[0042] 6 and 7, the marker portion 260 is disposed on the outer surface of the expansion member 210. The marker portion 260 may be disposed on the inner surface of the expansion member 210 facing the lumen 210a.

[0043] Furthermore, there are no particular limitations on the specific shape, color, formation method, etc. of the marker portion 260. The marker portion 260 can be configured as, for example, a circular marker that is entirely colored, a marker that is configured with a transparent center portion and a rectangular frame portion, a rectangular marker that is entirely colored, or the like.

[0044] The planar shape of the expansion member 210 is not limited to an oval shape. The expansion member 210 may be configured to have a planar shape such as a circle, an ellipse, a rectangle, etc. When the expansion member 210 is configured to have a planar shape such as a circle, an ellipse, a rectangle, etc., the center c1 of the expansion member 210 can be defined as the center position of the outer shape in a planar view.

[0045] The specific configuration of the expansion member 210 is not particularly limited. The expansion member 210 may be formed, for example, by joining an edge of one sheet-like member to the other sheet-like member in a state in which a cavity 210a is formed between two sheet-like members. In such a case, the surface of one sheet-like member of the expansion member 210 is connected to the sheet material 120 constituting the main body portion 110 of the cover member 100. The expansion member 210 can also be formed, for example, by a single bag-like member shaped to have a cavity 210a on the inside. In such a case, the expansion member 210 is connected to the sheet material 120 constituting the main body portion 110 of the cover member 100 at a part of the surface of the bag-like member.

[0046] <Cover material> As shown in Figures 5, 6, 7, and 16, the cover member 100 comprises a main body portion 110 in which the expansion member 210 is located, a first band portion 410 configured to be placed between the patient's fingers and extending from the main body portion 110 in a first direction, a second band portion 420 extending from the main body portion 110 in a second direction different from the first direction, and a third band portion 430 facing the second band portion 420 across the expansion member 210 and extending from the main body portion 110 in a third direction different from the first and second directions.

[0047] The main body portion 110 includes a region in the cover member 100 where the expansion member 210 is arranged (a region overlapping with the expansion member 210 in the plan view shown in FIG. 5).

[0048] As shown in FIGS. 6 and 7, the main body 110 has a two-layer structure and includes a holding portion 130 that holds the support member 300.

[0049] The holding portion 130 has an upper surface region 131 located on the outer surface 300b side of the support member 300, a lower surface region 132 located on the inner surface 300a side of the support member 300 and facing the upper surface region 131 across the support member 300, and a curved region 133 connecting the upper surface region 131 and the lower surface region 132 on the base end side of the support member 300 (the lower end portion 302 side of the support member 300).

[0050] The curved region 133 is formed by folding back a portion of the main body portion 110 towards the first band portion 410. In this embodiment, a portion of the sheet material 120 constituting the main body portion 110 is folded back from the base end side to the tip end side to form the holding portion 130 having an insertion portion g into which the support member 300 can be inserted.

[0051] A first end 121 located at the tip side of the folded-back portion of sheet material 120 is connected to sheet material 120 at a position on the tip side of upper end 301 of support member 300, as shown in Figures 5, 6 and 8. First end 121 constitutes the tip portion of holding portion 130.

[0052] In the curved region 133, as shown in Figs. 6 and 8, the base end portion 122 of the cover member 100 formed from a portion of the sheet material 120 is located.

[0053] As shown in Fig. 6, the retaining section 130 has an insertion section g closed between the first end 121 and the curved region 133 in the vertical width wa direction (see Fig. 8) of the expansion member 210. Also, as shown in Fig. 7, the retaining section 130 has an insertion section g that communicates with the outside on the second band section 420 side and the third band section 430 side in the horizontal width wb direction (see Fig. 8) of the expansion member 210.

[0054] As shown in FIGS. 4, 5 and 8, the lower surface region 132 has a constricted portion 132a located on the curved region 133 side.

[0055] As shown in Figs. 4 and 8, in the constricted portion 132a, the width (horizontal width) of the lower surface region 132 decreases from the first band portion 410 side toward the curved region 133 side.

[0056] The holding portion 130 is located on the base end side of the main body portion 110, as shown in FIGS.

[0057] The curved region 133 is located on the base end side of an intermediate region 115 of the cover member 100, which is located between the second band portion 420 and the third band portion 430 in the main body portion 110. The intermediate region 115 is a region where the second band portion 420 and the third band portion 430 overlap on the main body portion 110 when it is assumed that the second band portion 420 is extended toward the third band portion 430, or when it is assumed that the third band portion 430 is extended toward the second band portion 420, in the plan view shown in FIG.

[0058] As shown in FIGS. 6 and 17, the expansion member 210 is located at a position where an edge portion 211 located on the base end side of the expansion member 210 is close to the base end portion 122 of the cover member 100.

[0059] 4, each of the band parts 410, 420, 430 is connected to a surface that is placed on the body surface side of the right hand H1 in a region surrounding the periphery of the holding part 130. Each of the band parts 410, 420, 430 can be connected to the main body part 110 by, for example, fusion or adhesion. Note that each of the band parts 410, 420, 430 may be configured integrally with the main body part 110.

[0060] As shown in Figures 1 and 2, the first band portion 410 has one end portion 411 connected to the main body portion 110 of the cover member 100, the other end portion 412 located opposite the one end portion 411, and a main body portion 413 extending between the one end portion 411 and the other end portion 412.

[0061] The first band portion 410 has a centerline A1 that is located along the extension direction of the first band portion 410. The centerline A1 can be defined as an axis that passes through the center of the first band portion 410 in the width direction.

[0062] When the first band portion 410 does not have a substantially constant width along the extension direction, the center line A1 can be defined as a straight line connecting the widthwise center of one end portion 411 of the first band portion 410 and the widthwise center of the other end portion 412 of the first band portion 410. The above definition of the center line A1 can also be used to similarly define the center line A2 of the second band portion 420 and the center line A3 of the third band portion 430, which will be described later.

[0063] The first band portion 410 can be positioned, for example, as shown in FIG. 16, so that it is hooked onto the inter-finger portion fb located between the thumb and index finger of the patient's right hand H1 with the expansion member 210 positioned at the first puncture site p1.

[0064] As shown in Figures 1 and 2, the second band portion 420 has one end portion 421 connected to the main body portion 110 of the cover member 100, the other end portion 422 located opposite the one end portion 421, and a main body portion 423 extending between the one end portion 421 and the other end portion 422.

[0065] The second band portion 420 has a centerline A2 that is located along the extension direction of the second band portion 420. The centerline A2 can be defined as an axis that passes through the center of the second band portion 420 in the width direction.

[0066] As shown in Figures 1 and 2, the third band portion 430 has one end portion 431 connected to the main body portion 110 of the cover member 100, the other end portion 432 located opposite the one end portion 431, and a main body portion 433 extending between the one end portion 431 and the other end portion 432.

[0067] The third band portion 430 has a centerline A3 that is located along the extension direction of the third band portion 430. The centerline A3 can be defined as an axis that passes through the center of the third band portion 430 in the width direction.

[0068] As shown in Figures 16 and 19, when the hemostatic device 10 is worn on a patient's right hand H1, the second band portion 420 and the third band portion 430 can be positioned so as to be wrapped around the outer circumference of the right hand H1.

[0069] 5, the second band portion 420 and the third band portion 430 are positioned opposite each other with the expansion member 210 sandwiched therebetween. Therefore, when the second band portion 420 and the third band portion 430 are wrapped around the right hand H1, a pulling force is applied to the second band portion 420 and the third band portion 430 in a direction separating them from each other, and a pulling force is also applied to the main body portion 110 in the same direction.

[0070] 5, the angle θ1 between the center line A1 of the first band portion 410 and the center line A2 of the second band portion 420 is, for example, 90° to 120°. The angle θ2 between the center line A2 of the second band portion 420 and the center line A3 of the third band portion 430 is, for example, 120° to 180°. The angle θ3 between the center line A1 of the first band portion 410 and the center line A3 of the third band portion 430 is, for example, 90° to 120°.

[0071] Furthermore, the first direction in which the first band portion 410 extends, the second direction in which the second band portion 420 extends, and the third direction in which the third band portion 430 extends are not particularly limited as long as they are different directions.

[0072] The constituent material of each of the band portions 410, 420, 430 is not particularly limited, but may be, for example, vinyl chloride resin, polyurethane resin, polyester resin, etc. Furthermore, there are no particular limitations on the shape, length, thickness, etc. of each of the band portions 410, 420, 430.

[0073] Each band portion 410, 420, 430 is provided with four fastening portions, a first fastening portion 510, a second fastening portion 520, a third fastening portion 530, and a fourth fastening portion 540, which enable the cover member 100 to be fixed to the right hand H1.

[0074] As shown in FIG. 1, a first fixing portion 510 is disposed on the outer surface of the main body portion 423 of the second band portion 420.

[0075] As shown in FIG. 1, a second fixing portion 520 is disposed on the outer surface of the main body portion 433 of the third band portion 430.

[0076] As shown in FIG. 2, a third fixing portion 530 is disposed on the inner surface of the main body portion 423 of the second band portion 420.

[0077] As shown in FIG. 2, a fourth fixing portion 540 is disposed on the inner surface of the main body portion 413 of the first band portion 410.

[0078] The first fastening portion 510 and the second fastening portion 520 are configured on the male side of a hook-and-loop fastener. The third fastening portion 530 and the fourth fastening portion 540 are configured on the female side of a hook-and-loop fastener. The hook-and-loop fastener in this specification is a fastener that can be attached and detached on a surface, such as Magic Tape (registered trademark) or Velcro (registered trademark).

[0079] The second band unit 420 and the third band unit 430 are configured to be detachable via a third fixing portion 530 located on the inner surface of the main body unit 423 of the second band unit 420 and a second fixing portion 520 located on the outer surface of the main body unit 433 of the third band unit 430. The first band unit 410 and the second band unit 420 are configured to be detachable via a fourth fixing portion 540 located on the inner surface of the main body unit 413 of the first band unit 410 and a first fixing portion 510 located on the outer surface of the main body unit 423 of the second band unit 420.

[0080] The specific structure of each of the fixing parts 510, 520, 530, 540 is not limited as long as the cover member 100 can be fixed to the right hand H1 by connecting the band parts 410, 420, 430 with each other in a state where the hemostatic device 10 is placed on the right hand H1. For example, the installation of some of the fixing parts can be omitted, or the positions of the fixing parts in the band parts 410, 420, 430 can be changed as desired. In addition, when each of the fixing parts 510, 520, 530, 540 is configured with a hook-and-loop fastener, the male side and the female side of the hook-and-loop fastener may be interchanged. In addition, each of the fixing parts 510, 520, 530, 540 may be configured with, for example, a snap, a button, a clip, or a connecting mechanism having a frame part with a protrusion and an engaged part with a hole part that can engage with the frame part.

[0081] <Supporting member> 8 to 12 show the support member 300. In the drawings, arrows X1-X2 indicate the vertical direction of the support member 300 (the same direction as the vertical width wa of the extension member 210), arrows Y1-Y2 indicate the width direction of the support member 300 (the same direction as the horizontal width wb of the extension member 210), and arrows Z1-Z2 indicate the thickness direction of the support member 300.

[0082] The support member 300 can be disposed so as to overlap the expansion member 210 in the plan view shown in Fig. 5. The support member 300 is inserted into the insertion portion g of the holding portion 130 as shown in Fig. 6.

[0083] As shown in Figures 4, 5, 8, 9, and 10, support member 300 is located on the first band portion 410 side and has an upper end portion 301 that forms the end of support member 300, a lower end portion 302 that forms the end opposite upper end portion 301, a pair of side portions 303, 304 that connect upper end portion 301 and lower end portion 302, and an intermediate portion 305 located between upper end portion 301 and lower end portion 302.

[0084] 16 and 19, the upper end 301 can be disposed on the fingertip side (distal end side) when the hemostatic device 10 is attached to the patient's right hand H1. The lower end 302 can be disposed on the forearm Ar side (base end side) when the hemostatic device 10 is attached to the patient's right hand H1. The upper end 301 forms the distal end of the support member 300, and the lower end 302 forms the base end of the support member 300.

[0085] Upper end portion 301 of support member 300 has linear flat portion 301a in the plan view shown in Fig. 8. Flat portion 301a extends approximately linearly between corners 306c and 306d located on the upper end portion 301 side.

[0086] The lower end portion 302 of the support member 300 has a linear flat portion 302a in the plan view shown in Fig. 8. The flat portion 302a extends in a substantially linear manner between corners 306a and 306b located on the lower end portion 302 side.

[0087] 8, the support member 300 has an intermediate portion 305 located between an upper end portion 301 and a lower end portion 302. The intermediate portion 305 is located midway between the upper end portion 301 and the lower end portion 302 in the vertical direction.

[0088] As shown in FIGS. 7, 9 and 10, the outer surface 300b of the support member 300 is curved towards the second band portion 420 and the third band portion 430.

[0089] The radius of curvature of the outer surface 300b of the support member 300 can be, for example, formed to be approximately constant at each portion in the vertical direction of the support member 300. In other words, the outer surface 300b of the support member 300 has the most protruding apex located near the center in the width direction of the support member 300. In addition, the apex of the outer surface 300b of the support member 300 extends along the vertical direction passing through the middle portion 305.

[0090] The support member 300 has a shape that is line-symmetrical with respect to the center line A1 of the first band portion 410 in the main body portion 110. In this embodiment, the support member 300 has a shape that is symmetrical with respect to a line segment that is perpendicular to an axis along the width w1 of the upper end portion 301 and passes through points that are equidistant from both ends of the upper end portion 301 in the width w1 direction in the plan view of Fig. 8. Therefore, the support member 300 can be disposed in the main body portion 110 so as to be symmetrical with respect to the center line A1 of the first band portion 410.

[0091] Each of the side portions 303, 304 has a shape that is line-symmetrical with respect to the center line A1 of the first band portion 410 in the main body portion 110. Each of the side portions 303, 304 extends symmetrically with respect to the center line A1 such that the width of the support member 300 decreases at a substantially constant rate from the upper end portion 301 side toward the lower end portion 302 side in the plan view of FIG.

[0092] The support member 300 has a position that corresponds to a center of gravity G1 of the outer shape of the support member 300 in the plan view shown in FIG.

[0093] The width w1 of the upper end 301 is larger than the width w2 of the lower end 302 so that the center of gravity G1 is located closer to the upper end 301 than the intermediate portion 305. In this embodiment, the support member 300 has a substantially trapezoidal shape in which the width w1 of the upper end 301 is larger than the width w2 of the lower end 302. Therefore, the center of gravity G1 of the support member 300 is located at a position shifted a predetermined distance toward the upper end 301 side (the lower base side of the trapezoidal shape) than the intermediate portion 305 of the support member 300.

[0094] In this embodiment, the width w1 of the upper end 301 of the support member 300 is defined as the dimension (maximum width) of the widest part in the region located on the upper end 301 side of the intermediate part 305 of the support member 300. In addition, the width w2 of the base end of the support member 300 can be defined as the length of a straight line connecting the boundary between the side portion 303 and the corner portion 306a and the boundary between the side portion 304 and the corner portion 306b. When the corner portion 306a is formed in a curved shape as in this embodiment, the boundary between the side portion 303 and the corner portion 306a is the position where the tangent to the side portion 303 starts to change in a curved shape. Similarly, when the corner portion 306b is formed in a curved shape as in this embodiment, the boundary between the side portion 304 and the corner portion 306b is the position where the tangent to the side portion 304 starts to change in a curved shape. In addition, if the corners 306a, 306b are not formed in a curved shape, the width w2 of the base end of the support member 300 can be defined as the length of a straight line connecting the vertices located at each corner 306a, 306b.

[0095] 8, the center of gravity G1 of the marker portion 260 and the support member 300 of the extension member 210 is located on the center line A1 of the first band portion 410. In other words, the marker portion 260 and the center of gravity G1 are located at a position overlapping with the center line A1 in the main body portion 110 when the center line A1 is extended to the main body portion 110.

[0096] The support member 300 has a shape in the main body portion 110 that is line symmetrical with respect to the center line A1 of the first band portion 410. Therefore, the center of gravity G1 of the support member 300 is located approximately in the center of the support member 300 in the width direction.

[0097] The lower end 302 of the support member 300 is disposed so as to coincide with the edge 211 on the base end side of the expansion member 210. That is, as shown in Fig. 6 and Fig. 17, the lower end 302 of the support member 300 is located at a position overlapping with the edge 211 located on the base end side of the expansion member 210 in the plan view shown in Fig. 5 and Fig. 8.

[0098] The inner surface 300a of the support member 300 is curved toward the second band portion 420 and the third band portion 430. In other words, the inner surface 300a of the support member 300 is curved in a convex shape in a direction away from the expansion member 210, as shown in Figures 7, 11, and 12.

[0099] The radius of curvature of the inner surface 300a of the upper end portion 301 of the support member 300 can be formed to be smaller than the radius of curvature of the inner surface 300a of the lower end portion 302 of the support member 300, for example.

[0100] 10, 11 and 12, the support member 300 is configured so that the thickness t1 of the side portions 303, 304 connecting the upper end portion 301 and the lower end portion 302 becomes thinner from the upper end portion 301 toward the lower end portion 302. That is, the support member 300 is inclined so that the distance between the outer surface 300b and the inner surface 300a becomes smaller from the upper end portion 301 toward the lower end portion 302 in the cross-sectional views shown in Fig. 6 and Fig. 17.

[0101] Each of the four corners 306a, 306b, 306c, and 306d of the support member 300 is formed in a rounded curved shape.

[0102] In the hemostatic device 10, it is preferable that the portion of the expansion member 210 where the marker portion 260 is provided, the portion of the cover member 100 overlapping with the marker portion 260 (the upper surface region 131 and the lower surface region 132 of the holding portion 130), and the portion of the support member 300 overlapping with the marker portion 260 are formed transparently. When the members 100, 210, and 300 are configured in this manner, the surgeon can easily visually confirm the position of the marker portion 260 and / or the first puncture site p1 arranged on the expansion member 210 through the transparent portions of the members 100, 210, and 300 when attaching the hemostatic device 10 to the patient's right hand H1 as shown in Figs. 14 to 16. Note that the above-mentioned "transparent" includes colored transparent, colorless transparent, and translucent.

[0103] When the expansion member 210 is made of the materials mentioned above, the constituent materials of the support member 300 may be, for example, acrylic resin, polyvinyl chloride (especially rigid polyvinyl chloride), polyolefins such as polyethylene, polypropylene, polybutadiene, polystyrene, poly-(4-methylpentene-1), polycarbonate, ABS resin, polymethyl methacrylate (PMMA), polyacetal, polyacrylate, polyacrylonitrile, polyvinylidene fluoride, ionomer, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate (PET), etc.

[0104] <Injection part> The hemostatic device 10 has an injection portion 281 for injecting a fluid into the expansion member 210, as shown in FIGS.

[0105] Injection part 281 is configured with a connector having a check valve (not shown) built in. A syringe (not shown) can be connected to injection part 281.

[0106] A buffer member 282 having an expandable space is disposed between the injection part 281 and the expansion member 210. The buffer member 282 is configured of a flexible bag-shaped member with a space formed therein. An arrow-shaped marker indicating the insertion direction of the syringe into the injection part 281 may be provided on the buffer member 282.

[0107] One end of buffer member 282 is connected to injection part 281. The inner cavity of injection part 281 communicates with the space of buffer member 282. However, while a check valve built into injection part 281 is closed, communication between the inner cavity of injection part 281 and the space of buffer member 282 is blocked.

[0108] A flexible tube 283 is connected to the other end of the buffer member 282. The inner cavity of the tube 283 communicates with the space of the buffer member 282. The tube 283 has one end connected to the buffer member 282 and the other end opposite the other end connected to the expansion member 210. The inner cavity of the tube 283 communicates with the inner cavity 210a of the expansion member 210.

[0109] When expanding the expansion member 210, the surgeon inserts the tip of a syringe (not shown) into the injection part 281 to open the check valve. With the check valve of the injection part 281 open, the surgeon presses the plunger of the syringe to inject air from within the syringe into the lumen 210a of the expansion member 210.

[0110] When air is injected into the inner cavity 210a of the expansion member 210, the expansion member 210 expands. When the expansion member 210 expands, the buffer member 282, which communicates with the inner cavity 210a of the expansion member 210 via the tube 283, expands. By visually checking the expansion of the buffer member 282, the surgeon can easily understand that the expansion member 210 has expanded without any air leakage.

[0111] When contracting the expansion member 210, the surgeon inserts the tip of a syringe into the injection part 281 and pulls the plunger of the syringe. By performing the above operation, the surgeon can discharge the air in the inner cavity 210a of the expansion member 210 into the syringe.

[0112] The injection unit 281, the buffer member 282, and the tube 283 may be prepared and provided in a state where they are connected to the expansion member 210, or may be prepared and provided in a state where they are separated from the expansion member 210. Furthermore, the specific configuration of the injection unit 281 is not particularly limited as long as it is possible to operate the supply of fluid to the inner cavity 210a of the expansion member 210 and the discharge of fluid from the inner cavity 210a of the expansion member 210.

[0113] <Examples of hemostatic device use> Next, examples of use and the effects of the hemostatic device 10 will be described with reference to Figs.

[0114] The following describes the procedure for using the hemostatic device 10 when stopping bleeding at the first puncture site p1 formed on the patient's right hand H1 shown in FIG.

[0115] FIG. 14 shows a state in which various procedures using the sheath tube 610 of the introducer 600 inserted into the first puncture site p1 have been completed.

[0116] When attaching the hemostatic device 10 to the patient's right hand H1, the surgeon positions the expansion member 210 and the support member 300 so that they overlap at the first puncture site p1, as shown in Fig. 14. At this time, the surgeon visually checks the position of the marker portion 260 placed on the expansion member 210, while placing the marker portion 260 at the first puncture site p1, thereby enabling the expansion member 210 and the support member 300 to be appropriately positioned at the first puncture site p1.

[0117] When attaching the hemostatic device 10 to the patient's right hand H1, the surgeon can arrange the support member 300 so as to overlap the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb. The distance between the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb gradually narrows from the fingertip side toward the forearm Ar side (see FIG. 13). The width of the support member 300 decreases from the upper end 301 located on the fingertip side toward the lower end 302 located on the forearm Ar side (see FIG. 8). Therefore, the surgeon can arrange the support member 300 so as to be aligned with the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb by arranging the support member 300 so as to overlap the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb from the back side of the patient's right hand H1. By positioning the support member 300 so that it is aligned with the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb, the surgeon can prevent a gap from forming between the extension member 210, which is positioned on the inner surface 300a side of the support member 300, and the right hand H1.

[0118] As shown in Fig. 15, the surgeon wraps the second band portion 420 and the third band portion 430 around the outer circumference of the patient's right hand H1. The surgeon can connect the second band portion 420 and the third band portion 430 via the respective fixing portions 520, 530 by bringing the second fixing portion 520 (see Fig. 1) arranged on the outer surface of the third band portion 430 into contact with the third fixing portion 530 (see Fig. 2) arranged on the inner surface of the second band portion 420. The surgeon can connect the respective band portions 420, 430 together while overlapping the support member 300 on the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb, thereby firmly wrapping the respective band portions 420, 430 around the outer circumference of the right hand H1.

[0119] The outer surface 300b of the support member 300 is curved toward the second band portion 420 side (side surface portion 303 side) and the third band portion 430 side (side surface portion 304 side) (see Figs. 5, 7, 9, and 10). Therefore, by wrapping the second band portion 420 and the third band portion 430 around the patient's right hand H1 as shown in Fig. 15, the surgeon can press the support member 300 against the right hand H1 from the outer surface 300b side along the outer periphery of the right hand H1 as shown in Fig. 18. Therefore, the hemostatic device 10 can increase the fixing force of the support member 300 and the expansion member 210 to the patient's right hand H1.

[0120] 16, the surgeon places a part of the first band part 410 on the palm side of the patient's right hand H1 while passing the first band part 410 through the inter-finger part fb located between the thumb and index finger of the patient's right hand H1. At this time, the surgeon can connect the first band part 410 and the second band part 420 via the fixing parts 510, 540 by contacting the first fixing part 510 (see FIG. 1) located on the outer surface of the second band part 420 with the fourth fixing part 540 (see FIG. 2) located on the inner surface of the first band part 410.

[0121] The support member 300 has an upper end portion 301 and side portions 303, 304. The first band portion 410 extends from the upper end portion 301 side, the second band portion 420 extends from the side portion 303 side, and the third band portion 430 extends from the side portion 304 side (see FIG. 5 ). Therefore, by connecting the band portions 410, 420, 430 to each other, the hemostatic device 10 can fix the support member 300 to the patient's right hand H1 while applying uniform force to positions corresponding to the portions 301, 303, 304 of the support member 300.

[0122] The support member 300 has a shape in the main body 110 that is symmetrical with respect to the center line A1 of the first band portion 410 (see Figs. 5 and 8). Therefore, the hemostatic device 10 can apply forces evenly in symmetrical directions to the support member 300 by wrapping the band portions 420, 430, which extend in symmetrical directions from the main body 110 with respect to the center line A1 of the first band portion 410, around the patient's right hand H1. This makes it possible to prevent the support member 300 from shifting out of position when the support member 300 is placed on the patient's right hand H1.

[0123] Each part of the patient's right hand H1 (for example, around the snuff box Sb) has an inclined portion (see FIG. 13). The shape of the inclined portion of the right hand H1 depends on the individual patient. For example, if the inner surface of the support member is formed in a flat shape, it is difficult to arrange the support member so as to fit along the inclined portion of the right hand H1. In the hemostatic device 10, the inner surface 300a of the support member 300 is curved convexly in a direction away from the expansion member 210 (see FIGS. 7 and 18). Therefore, by arranging the inner surface 300a of the support member 300 so as to overlap the inclined portion of the patient's right hand H1, the inner surface 300a of the support member 300 can be arranged so as to fit along the patient's right hand H1. As a result, the hemostatic device 10 can be arranged so that the support member 300 overlaps the first puncture site p1, regardless of the patient's dominant hand or the way the surgeon places the hemostatic device 10. Therefore, in the hemostatic device 10, the support member 300 can be suitably disposed at a desired position near the first puncture site p1.

[0124] In addition to the above, when the surgeon wraps the second band portion 420 and the third band portion 430 around the patient's right hand H1, the inner surface 300a of the support member 300 is positioned along the body surface of the right hand H1, so that the band portions 420, 430 extending from the side portions 303, 304 of the support member 300 can be positioned close to or in close contact with the body surface of the patient's right hand H1 (see FIG. 18). Therefore, the hemostatic device 10 can increase the fixing force of the support member 300 and the expansion member 210 to the patient's right hand H1. As a result, the hemostatic device 10 can prevent the support member 300 and the expansion member 210 from being displaced even when an external impact or the like is applied to the support member 300 and the expansion member 210 when worn on the patient's right hand H1.

[0125] With a syringe connected to the injection portion 281, the surgeon injects air into the expansion member 210 to expand the expansion member 210. As shown in Figs. 17 and 18, in the hemostatic device 10, when the expansion member 210 expands, the expansion member 210 applies a compressive force to the first puncture site p1.

[0126] The support member 300, which is made of a material harder than the expansion member 210, presses the expansion member 210 against the patient's right hand H1 when the expansion member 210 expands while the hemostatic device 10 is attached to the patient's right hand H1. This enables the hemostatic device 10 to prevent the expansion member 210 from lifting up from the patient's right hand H1.

[0127] When performing hemostasis using a hemostatic instrument, the surgeon can, for example, strongly tighten the first band portion disposed in the interdigital portion fb in order to increase the fixing force of the support member to the patient's right hand H1. By strongly tightening the first band portion, the surgeon can firmly fix the support member to the patient's right hand H1 even if the support member is placed in an unstable state on the patient's right hand H1. However, if the first band portion is strongly tightened, the patient may feel pain. Therefore, if the first band portion cannot be tightened strongly due to pain felt by the patient, the hemostatic instrument may be placed with the inner surface of the support member inclined relative to the body surface of the patient's right hand H1. Specifically, the upper end of the support member where the first band portion is disposed is raised to a position excessively farther from the body surface of the patient's right hand H1 than the lower end located opposite the upper end. As a result, the hemostatic device is positioned with the support member tilted so that the distance between the inner surface of the support member and the body surface of the patient's right hand H1 gradually narrows from the upper end to the lower end of the support member.

[0128] The hemostatic device 10 is configured such that the thickness t1 of the side portions 303, 304 of the support member 300 becomes thinner from the upper end 301 toward the lower end 302. In addition, the first band portion 410 configured to be placed in the inter-finger portion fb located between the patient's fingers extends from the upper end 301 side of the support member 300 and is configured to press the upper end 301 side of the support member 300 against the patient's right hand H1. In the hemostatic device 10 configured in this manner, when the expansion member 210 starts to expand with the support member 300 and the expansion member 210 fixed to the patient's right hand H1, the expansion member 210 applies force to the vicinity of the upper end 301 of the support member 300. The upper end 301 side of the support member 300 is lifted by the force applied by the expansion member 210. As a result, when the expansion member 210 is in an expanded state, the inner surface 300a of the support member 300 is disposed approximately parallel to the body surface of the patient's right hand H1, as shown in Fig. 17. Therefore, when the expansion member 210 is expanded, the hemostatic device 10 can apply a compressive force in the vertical direction to the first puncture site p1.

[0129] The inner surface 300a of the support member 300 is curved toward the second band portion 420 side and the third band portion 430 side (see Figs. 7 and 18). As shown in Fig. 18, the hemostatic device 10 is disposed such that the inner surface 300a of the support member 300 is along the body surface of the patient's right hand H1 when the expansion member 210 is in an expanded state. When the expansion member 210 expands, the hemostatic device 10 presses the expansion member 210 by the inner surface 300a of the support member 300 so as to be along the body surface of the patient's right hand H1. Thereby, when the expansion member 210 expands, the expansion member 210 applies a compressive force in a direction toward the first puncture site p1 from the side surfaces 303, 304 located at the center side in the width direction of the inner surface 300a of the support member 300 and at both ends in the width direction of the inner surface 300a of the support member 300. Therefore, in the hemostatic device 10, the compression force applied by the expansion member 210 to the first puncture site p1 can be effectively increased, compared to when the inner surface of the support member is formed in a flat surface shape.

[0130] 19 shows a state where a patient wearing the hemostatic device 10 twists his wrist toward the back of his right hand H1. When the hemostatic device 10 is worn on the patient's right hand H1, the lower end 302 of the support member 300 is located on the forearm Ar side. For example, when a patient wearing the hemostatic device 10 twists his wrist toward the back of his right hand H1, the base end 122 (see FIG. 17) of the cover member 100 located on the lower end 302 side of the support member 300 may dig into the body surface of the patient's wrist or forearm Ar. In particular, when the expansion member 210 is in an expanded state, the tip side of the cover member 100 rises excessively relative to the base end 122 side, and if the hemostatic device 10 is attached so that the gap between the cover member 100 and the body surface becomes smaller from the tip side of the cover member 100 toward the base end 122 side of the cover member 100, the base end 122 of the cover member 100 will be more likely to dig into the patient's body surface when the patient twists their wrist toward the back of their right hand H1.

[0131] The hemostatic device 10 can effectively prevent the above problems from occurring for the following reasons.

[0132] The marker portion 260 of the expansion member 210 is located on the base end side of the intersection point Lp of the center line A1 of the first band portion 410, the center line A2 of the second band portion 420, and the center line A3 of the third band portion 430 in the main body portion 110 of the cover member 100. The main body portion 110 of the cover member 100 is configured to apply a pulling force to the intersection point Lp of each of the band portions 410, 420, 430 in a direction in which each of the band portions 410, 420, 430 moves away from the cover member 100 when the main body portion 110 is fixed to the patient's right hand H1 by each of the band portions 410, 420, 430. The hemostatic device 10 is configured such that the marker portion 260 of the expansion member 210 is disposed closer to the base end of the main body portion 110 than the intersection points Lp of the band portions 410, 420, 430, and thus the region of the expansion member 210 disposed at the first puncture site p1 (near the center c1 of the expansion member 210) is positioned at a position shifted toward the base end of the main body portion 110 from the intersection points Lp of the band portions 410, 420, 430. Therefore, in the hemostatic device 10, the maximum expansion portion (near the center c1 of the expansion member 210) that expands the most in the expansion member 210 when the expansion member 210 expands is positioned at a position shifted toward the base end of the main body portion 110 from the intersection points Lp of the band portions 410, 420, 430. The expansion member 210 can lift the base end 122 of the cover member 100 by expanding in a state where the maximum expansion portion of the expansion member 210 is positioned at a position shifted toward the base end side of the main body portion 110 from the intersection point Lp of each of the band portions 410, 420, 430. This allows the hemostatic device 10 to maintain an appropriate gap between the base end 122 of the cover member 100 and the body surface of the patient when the expansion member 210 expands. Therefore, when the hemostatic device 10 is worn on a patient and the patient performs an action such as twisting his / her wrist, the hemostatic device 10 can prevent the base end 122 of the cover member 100 from digging into the body surface of the patient.

[0133] In the hemostatic device 10, the support member 300 has a position that is the center of gravity G1 of the outer shape of the support member 300 in the plan view shown in FIG. 8. The marker portion 260 of the expansion member 210 is located closer to the base end of the main body portion 110 than the center of gravity G1. Therefore, the expansion member 210 is configured to expand in a state in which the marker portion 260 of the expansion member 210 is located closer to the lower end portion 302 of the support member 300 than the center of gravity G1 of the support member 300. Since the center of gravity G1 of the support member 300 is located closer to the upper end portion 301 than the marker portion 260 of the expansion member 210, when the expansion member 210 expands, a part of the expansion member 210 located on the upper end portion 301 side of the support member 300 can be pressed against the body surface of the patient's right hand H1. Therefore, when the expansion member 210 expands, the hemostatic device 10 can lift the lower end portion 302 side of the support member 300 from the body surface of the patient's right hand H1. Therefore, when the hemostatic device 10 is attached to the patient's right hand H1 and the expanded expansion member 210 is applying a compressive force to the first puncture site p1, the hemostatic device 10 can prevent the lower end 302 of the support member 300, which is positioned on the patient's wrist or forearm Ar side, from digging into the body surface.

[0134] The width w1 of the support member 300 is configured to be larger than the width w2 of the lower end 302 so that the center of gravity G1 of the support member 300 is located on the upper end 301 side (see FIG. 8). Therefore, the expansion member 210 is configured so that the marker portion 260 of the expansion member 210 is located at a position closer to the base end 122 side of the cover member 100 than the center of gravity G1 of the support member 300. Therefore, the hemostatic device 10 is configured so that when the expansion member 210 is expanded, the support member 300 more reliably presses a part of the expansion member 210 located on the upper end 301 side of the support member 300 against the body surface of the patient's right hand H1. Therefore, when the expansion member 210 is expanded, the hemostatic device 10 can more reliably lift the lower end 302 side of the support member 300 from the body surface of the patient's right hand H1.

[0135] The support member 300 has a shape that is line-symmetrical with respect to the center line A1 of the first band portion 410 in the main body portion 110 (see Figs. 5 and 8). Therefore, the center of gravity G1 of the support member 300 is located at approximately the center in the width direction of the support member 300. Furthermore, the marker portion 260 and the center of gravity G1 are located on the center line A1 of the first band portion 410. In the hemostatic device 10, when the expansion member 210 expands in a state in which the marker portion 260 is located on the center line A1 of the first band portion 410, the base end portion 122 of the cover member 100 is efficiently lifted in association with the expansion of the expansion member 210. Furthermore, since the center of gravity G1 of the support member 300 is located at approximately the center in the width direction of the support member 300, the base end portion 122 of the cover member 100 is lifted evenly in the width direction of the support member 300 in association with the expansion of the expansion member 210. Therefore, when the hemostatic device 10 is attached to a patient's right hand H1 and the expansion member 210 is expanded, when the patient performs an action such as twisting the wrist, the hemostatic device 10 can effectively prevent the base end 122 of the cover member 100 from digging into the surface of the patient's body.

[0136] The lower end 302 of the support member 300 has a linear flat portion 302a in plan view (see FIG. 8). The flat portion 302a extends in a substantially linear manner between the second band portion 420 and the third band portion 430. Therefore, when the second band portion 420 and the third band portion 430 are wrapped around the patient's right hand H1, a tensile force is applied in a direction substantially parallel to the flat portion 302a to a portion of the cover member 100 located between the lower end 302 of the support member 300 and the second band portion 420 and a portion of the cover member 100 located between the lower end 302 of the support member 300 and the third band portion 430. When the second band portion 420 and the third band portion 430 are wrapped around the patient's right hand H1, the above-mentioned portions of the cover member 100 are pulled toward the second band portion 420 and the third band portion 430, so that when the expansion member 210 expands, a gap can be formed between the base end portion 122 of the cover member 100 and the patient's body surface along a predetermined range to which the flat portion 302a extends. Therefore, when the hemostatic device 10 is worn on the patient's right hand H1 and the expansion member 210 is expanded, and the patient performs an action such as twisting the wrist, the base end portion 122 of the cover member 100 can be prevented from digging into the patient's body surface within the predetermined range to which the flat portion 302a extends.

[0137] For example, in a hemostatic device, when the support member is formed in a triangle and the apex of the triangle is positioned near the base end of the cover member, the second band portion and the third band portion are positioned so that they are close to or in close contact with the body surface, with the apex of the triangle as the base point, when the expansion member expands. In this case, the base end of the cover member is pressed against the apex of the triangle, which makes it easier for the base end of the cover member to come into contact with the body surface. As a result, when the patient performs an action such as twisting their wrist, the base end of the cover member is more likely to bite into the body surface of the patient.

[0138] Moreover, in the hemostatic device 10, the thickness t1 of the side portions 303, 304 is configured to decrease from the upper end portion 301 side toward the lower end portion 302 side (see FIG. 10). Therefore, in the hemostatic device 10, when the expansion member 210 is expanded as shown in FIG. 17, the lower end portion 302 can be disposed at a position away from the body surface of the patient. This allows the hemostatic device 10 to effectively prevent the base end portion 122 of the cover member 100 from contacting the body surface of the patient. Furthermore, in the hemostatic device 10, the thickness t1 of the side portions 303, 304 is configured to decrease from the upper end portion 301 side toward the lower end portion 302 side, so that when the operator looks into the first puncture site p1 from the lower end portion 302 side in the state in which the expansion member 210 is expanded as shown in FIG. 17, the lower end portion 302 of the support member 300 can be prevented from interfering with the operator's visual confirmation. Therefore, the surgeon can easily visually check the puncture site p1 from the base end portion 122 side of the cover member 100.

[0139] In addition, when the entire support member from the upper end to the lower end is thin, the base end of the cover member can be prevented from contacting the body surface as described above, and visual confirmation by the surgeon or the like can be suppressed. However, when the entire support member from the upper end to the lower end is formed thin, the rigidity of the support member decreases and the support member becomes easily deformed. This reduces the effect of the support member in pressing down the expansion member. As a result, the compression force applied by the expansion member to the first puncture site p1 decreases. In addition, when the entire support member is formed with a constant thin thickness as described above, if the first band portion is not tightly fastened to the inter-finger portion fb, the first band portion will float on the fingertip side, and the expansion member will be arranged in an inclined state. Therefore, the hemostatic device will not be able to effectively apply compression force to the first puncture site p1.

[0140] The lower end 302 of the support member 300 is located at a position that coincides with the edge 211 on the base end side of the expansion member 210 (see FIG. 17). Therefore, in the hemostatic device 10, when the expansion member 210 is expanded and a gap is formed between the base end 122 of the cover member 100 and the patient's body surface, a step is prevented from being formed between the base end 122 of the cover member 100 and the edge 211 on the base end side of the expansion member 210. If a step is formed between the base end of the cover member and the edge on the base end side of the expansion member when the expansion member is expanded, an object or the like is likely to get caught on the step. In addition, the hemostatic device is likely to be displaced due to an object or the like getting caught on the step. The above-mentioned "step" refers to a gap that occurs in the thickness direction of the support member between the base end of the cover member and the edge of the expansion member as a result of the base end of the cover member and the edge of the expansion member being positioned out of position in the vertical direction of the cover member.

[0141] The supporting member 300 has rounded corners 306a, 306b, 306c, and 306d (see FIG. 8). Therefore, in the hemostatic device 10, while the expansion member 210 is expanding and applying a compressive force to the first puncture site p1, the corners 306a, 306b, 306c, and 306d of the supporting member 300 can be prevented from digging into the body surface of the patient's right hand H1.

[0142] After expanding the expansion member 210, the surgeon removes the sheath tube 610 of the introducer 600 from the first puncture site p1 as shown in Fig. 16. The surgeon checks that there is no bleeding from the first puncture site p1 while performing hemostasis using the hemostatic instrument 10. If there is bleeding from the first puncture site p1, the surgeon can adjust the amount of air injected into the expansion member 210.

[0143] By following the above procedure, the surgeon can use the hemostatic instrument 10 to stop bleeding at the first puncture site p1 formed in the patient's right hand H1.

[0144] In the hemostatic device 10, the support member 300 and the expansion member 210 have shapes in the main body portion 110 that are line-symmetrical with respect to the center line A1 of the first band portion 410. Therefore, even when the hemostatic device 10 is used to stop bleeding at a puncture site formed at a position corresponding to the first puncture site p1 on the patient's left hand and at a puncture site formed at a position corresponding to the second puncture site p2 on the patient's left hand, it can exert the same effect as when the hemostatic device 10 is used to stop bleeding at the first puncture site p1 (or the second puncture site p2) on the right hand H1 described above.

[0145] As described above, the hemostatic device 10 according to this embodiment includes the cover member 100 configured to cover the first puncture site p1, the pressing member 200 connected to the cover member 100 and configured to press the first puncture site p1, and the support member 300 arranged on the cover member 100 to cover the pressing member 200 and made of a material harder than the material of the pressing member 200. The cover member 100 includes a main body portion 110 in which the pressing member 200 is located, a first band portion 410 configured to be arranged between the patient's fingers and extending from the main body portion 110 in a first direction, a second band portion 420 extending from the main body portion 110 in a second direction different from the first direction, and a third band portion 430 facing the second band portion 420 across the pressing member 200 and extending in a third direction different from the first and second directions. The pressing member 200 and the support member 300 are located on an extension line of the first band portion 410, and the pressing member 200 is an expansion member 210 configured to be expandable by injecting a fluid, and the expansion member 210 has a marker portion 260 for aligning the expansion member 210 with the first puncture site p1, and the marker portion 260 is located on the base side of the intersection Lp of the center line A1 of the first band portion 410, the center line A2 of the second band portion 420, and the center line A3 of the third band portion 430 in the main body portion 110.

[0146] In the hemostatic device 10 configured as described above, the marker portion 260 of the expansion member 210 is located on the base end side of the intersection point Lp of the center line A1 of the first band portion 410, the center line A2 of the second band portion 420, and the center line A3 of the third band portion 430 in the main body portion 110 of the covering member 100. The main body portion 110 of the covering member 100 is configured to apply a pulling force to the intersection point Lp of each of the band portions 410, 420, 430 in a direction in which each of the band portions 410, 420, 430 moves away from the covering member 100 when the main body portion 110 is fixed to the patient's right hand H1 by each of the band portions 410, 420, 430. The hemostatic device 10 is configured such that the marker portion 260 of the expansion member 210 is disposed closer to the base end of the main body portion 110 than the intersection points Lp of the band portions 410, 420, 430, and thus the region of the expansion member 210 disposed at the first puncture site p1 (near the center c1 of the expansion member 210) is positioned at a position shifted toward the base end of the main body portion 110 from the intersection points Lp of the band portions 410, 420, 430. Therefore, in the hemostatic device 10, the maximum expansion portion (near the center c1 of the expansion member 210) that expands the most in the expansion member 210 when the expansion member 210 expands is positioned at a position shifted toward the base end of the main body portion 110 from the intersection points Lp of the band portions 410, 420, 430. The expansion member 210 can lift the base end 122 of the cover member 100 by expanding in a state where the maximum expansion portion of the expansion member 210 is positioned at a position shifted toward the base end side of the main body portion 110 from the intersection point Lp of each of the band portions 410, 420, 430. This allows the hemostatic device 10 to maintain an appropriate gap between the base end 122 of the cover member 100 and the body surface of the patient when the expansion member 210 expands. Therefore, when the hemostatic device 10 is worn on a patient and the patient performs an action such as twisting his / her wrist, the hemostatic device 10 can prevent the base end 122 of the cover member 100 from digging into the body surface of the patient.

[0147] The support member 300 has a position that is a center of gravity G1 of the outer shape of the support member 300 in a plan view. The marker portion 260 is located closer to the base end side of the main body portion 110 than the center of gravity G1.

[0148] According to the hemostatic device 10 configured as described above, the expansion member 210 is disposed in the main body 110 so as to expand in a state in which the marker portion 260 of the expansion member 210 is located closer to the lower end portion 302 of the support member 300 than the center of gravity G1 of the support member 300. Since the center of gravity G1 of the support member 300 is located closer to the upper end portion 301 than the marker portion 260 of the expansion member 210, when the expansion member 210 expands, a part of the expansion member 210 located on the upper end portion 301 side of the support member 300 can be pressed against the body surface of the patient's right hand H1. Therefore, when the expansion member 210 expands, the hemostatic device 10 can lift the lower end portion 302 side of the support member 300 from the body surface of the patient's right hand H1. Therefore, when the hemostatic device 10 is attached to the patient's right hand H1 and the expanded expansion member 210 is applying a compressive force to the first puncture site p1, the hemostatic device 10 can prevent the lower end 302 of the support member 300, which is positioned on the patient's wrist or forearm Ar side, from digging into the body surface.

[0149] The support member 300 has a shape that is symmetrical with respect to the center line A1 of the first band portion 410 in the main body portion 110. The marker portion 260 and the center of gravity G1 are located on the center line A1 of the first band portion 410.

[0150] According to the hemostatic device 10 configured as described above, the support member 300 has a shape that is line-symmetrical with respect to the center line A1 of the first band portion 410 in the main body portion 110. Therefore, the center of gravity G1 of the support member 300 is located at approximately the center in the width direction of the support member 300. Furthermore, the marker portion 260 and the center of gravity G1 are located on the center line A1 of the first band portion 410. In the hemostatic device 10, when the expansion member 210 expands in a state in which the marker portion 260 is located on the center line A1 of the first band portion 410, the base end portion 122 of the cover member 100 is lifted in association with the expansion of the expansion member 210. Furthermore, since the center of gravity G1 of the support member 300 is located at approximately the center in the width direction of the support member 300, the base end portion 122 of the cover member 100 is lifted evenly in the width direction of the support member 300 in association with the expansion of the expansion member 210. Therefore, when the hemostatic device 10 is attached to a patient's right hand H1 and the expansion member 210 is expanded, the hemostatic device 10 can more effectively prevent the base end 122 of the cover member 100 from digging into the surface of the patient's body when the patient performs an action such as twisting their wrist.

[0151] The support member 300 is located on the first band portion 410 side and has an upper end portion 301 that forms an end portion of the support member 300, and a lower end portion 302 that forms the end portion opposite the upper end portion 301. The width w1 of the upper end portion 301 is configured to be larger than the width w2 of the lower end portion 302 so that the center of gravity G1 is located on the upper end portion 301 side.

[0152] According to the hemostatic device 10 configured as described above, the expansion member 210 is configured so that the marker portion 260 of the expansion member 210 is located at a position closer to the base end portion 122 side of the cover member 100 than the center of gravity G1. Therefore, when the expansion member 210 expands, the hemostatic device 10 can more reliably press the part of the expansion member 210 located on the upper end portion 301 side of the support member 300 against the body surface of the patient's right hand H1. Therefore, when the expansion member 210 expands, the hemostatic device 10 can more reliably lift the lower end portion 302 side of the support member 300 from the body surface of the patient's right hand H1.

[0153] The lower end portion 302 of the support member 300 has a linear flat portion 302a in a plan view.

[0154] In the hemostatic device 10 configured as described above, the flat portion 302a of the lower end portion 302 of the support member 300 extends in a substantially straight line between the second band portion 420 and the third band portion 430. Therefore, when the second band portion 420 and the third band portion 430 are wrapped around the patient's right hand H1, a tensile force is applied in a direction substantially parallel to the flat portion 302a to a portion of the cover member 100 located between the lower end portion 302 of the support member 300 and the second band portion 420 and to a portion of the cover member 100 located between the lower end portion 302 of the support member 300 and the third band portion 430. When the second band portion 420 and the third band portion 430 are wrapped around the patient's right hand H1, the above-mentioned portions of the cover member 100 are pulled toward the second band portion 420 and the third band portion 430, so that when the expansion member 210 expands, a gap can be formed between the base end portion 122 of the cover member 100 and the patient's body surface along a predetermined range to which the flat portion 302a extends. Therefore, when the hemostatic device 10 is worn on the patient's right hand H1 and the expansion member 210 is expanded, and the patient performs an action such as twisting the wrist, the base end portion 122 of the cover member 100 can be prevented from digging into the patient's body surface within the predetermined range to which the flat portion 302a extends.

[0155] The support member 300 has side portions 303, 304 connecting an upper end portion 301 and a lower end portion 302. The thickness t1 of the side portions 303, 304 is configured to decrease from the upper end portion 301 side toward the lower end portion 302 side.

[0156] According to the hemostatic device 10 configured as described above, when the expansion member 210 is in an expanded state, the lower end 302 of the support member 300 can be disposed at a position away from the body surface of the patient. This allows the hemostatic device 10 to effectively prevent the base end 122 of the cover member 100 from coming into contact with the body surface of the patient. In addition, since the hemostatic device 10 is configured such that the thickness t1 of the side portions 303, 304 decreases from the upper end 301 side toward the lower end 302 side, when the expansion member 210 is in an expanded state, when the surgeon looks into the first puncture site p1 from the lower end 302 side, it is possible to prevent the lower end 302 of the support member 300 from obstructing the surgeon's visual confirmation. Therefore, the surgeon can easily visually confirm the puncture site p1 from the base end 122 side of the cover member 100.

[0157] The lower end 302 of the support member 300 is positioned to coincide with the proximal edge 211 of the expansion member 210 .

[0158] According to the hemostatic device 10 configured as described above, when the expansion member 210 is expanded and a gap is provided between the base end 122 of the cover member 100 and the patient's body surface, it is possible to prevent a step from being formed between the base end 122 of the cover member 100 and the edge portion 211 on the base end side of the expansion member 210. Therefore, when the hemostatic device 10 is worn on the patient's right hand H1, it is possible to prevent the hemostatic device 10 from being displaced due to an object or the like getting caught on the step.

[0159] The inner surface 300 a of the support member 300 is curved toward the second band portion 420 and toward the third band portion 430 .

[0160] According to the hemostatic device 10 configured as described above, since the inner surface 300a of the support member 300 is curved toward the second band portion 420 side and the third band portion 430 side, when the expansion member 210 is in an expanded state, the inner surface 300a of the support member 300 is disposed so as to follow the body surface of the patient's right hand H1. When the expansion member 210 expands, the inner surface 300a of the support member 300 presses the expansion member 210 so as to follow the body surface of the patient's right hand H1. As a result, when the expansion member 210 expands, the expansion member 210 can apply a compressive force in a direction toward the first puncture site p1 from the side surfaces 303, 304 located at the center side in the width direction of the inner surface 300a of the support member 300 and at both ends in the width direction of the inner surface 300a of the support member 300. Therefore, in the hemostatic device 10, the compression force applied by the expansion member 210 to the first puncture site p1 can be effectively increased compared to when the inner surface 300a of the support member 300 is formed in a flat surface shape.

[0161] <Modification> Next, a modified example of the embodiment described above will be described. In the description of the modified example, the description of the members and the procedure for using the hemostatic device that have already been described in the embodiment described above will be omitted as appropriate. Furthermore, the content of the modified example that is not specifically described can be the same as that of the embodiment described above.

[0162] 20 and 21 show a hemostatic device according to a modified example. Fig. 20 is a plan view corresponding to Fig. 5 described in the first embodiment. Fig. 21 is a cross-sectional view taken along the arrows 21-21 shown in Fig. 20.

[0163] As shown in Figures 20 and 21, in the hemostatic device of the modified example, the marker portion 260 of the expansion member 210 is located at the intersection Lp of the center line A1 of the first band portion 410, the center line A2 of the second band portion 420, and the center line A3 of the third band portion 430 in the main body portion 110.

[0164] In the hemostatic device according to the modified example, the marker portion 260 of the expansion member 210 is located at the intersection Lp of each band portion 410, 420, 430. The expansion member 210 is arranged so that the center c1 of the expansion member 210 is located at a predetermined position of the main body portion 110 so that the marker portion 260 overlaps with the intersection Lp in the plan view of FIG. 21. In addition, the base end of the main body portion 110 where the expansion member 210 is located in the cover member 100 is located closer to the tip of the cover member 100 than the hemostatic device 10 according to the above-mentioned embodiment. In addition, the curved region 133 is located closer to the tip of the cover member 100 than the hemostatic device 10 according to the above-mentioned embodiment, as the base ends of the expansion member 210 and the main body portion 110 are located closer to the tip of the cover member 100 than the hemostatic device 10 according to the above-mentioned embodiment. Specifically, the curved region 133 is located in the middle region 115 of the cover member 100.

[0165] In this modification, the marker portion 260, the center c1 of the expansion member 210, the intersection point Lp of each band portion 410, 420, 430, and the middle portion 305 of the support member 300 are located at overlapping positions in the plan view shown in Fig. 20. The center of gravity G1 of the support member 300 is located closer to the tip side of the cover member 100 than the marker portion 260, the center c1 of the expansion member 210, and the intersection point Lp.

[0166] In the hemostatic device according to the modified example, the marker portion 260 (center c1 of the expansion member 210) of the expansion member 210 is located at the intersection Lp of each of the band portions 410, 420, and 430. Therefore, in the hemostatic device, when the expansion member 210 is expanded, the region of the expansion member 210 placed at the first puncture site (near the center c1 of the expansion member 210) is located at the intersection Lp of each of the band portions 410, 420, and 430. Therefore, when the expansion member 210 is expanded, the maximum expansion portion of the expansion member 210 that expands the most is located near the intersection Lp of each of the band portions 410, 420, and 430. The expansion member 210 expands in a state in which the maximum expansion portion of the expansion member 210 is located at the intersection Lp of each of the band portions 410, 420, and 430, and thereby the base end portion 122 of the cover member 100 can be lifted. Thereby, the hemostatic device according to the modified example can maintain an appropriate gap between the base end 122 of the cover member 100 and the body surface of the patient when the expansion member 210 is expanded. Therefore, the hemostatic device according to the modified example can prevent the base end 122 of the cover member 100 from digging into the body surface of the patient when the patient performs an action such as twisting the wrist while the hemostatic device is attached to the patient.

[0167] Furthermore, in the hemostatic device of the modified example, the marker portion 260, the center c1 of the expansion member 210, the intersection point Lp of each band portion 410, 420, 430, and the intermediate portion 305 of the support member 300 are positioned consistently, so that when the expansion member 210 expands, a compression force can be effectively applied to the first puncture site p1 from the maximum expansion portion located near the center c1 of the expansion member 210.

[0168] The above describes the hemostatic device of the present invention through embodiments and modified examples, but the present invention is not limited to the contents described in the specification and can be modified as appropriate based on the description of the claims.

[0169] The shape, dimensions, etc. of each part of the hemostatic device are not particularly limited as long as the pressing member placed at the puncture site can compress and stop bleeding, and can be changed as appropriate.

[0170] The specific shapes (planar shape and cross-sectional shape) of the expansion member and the support member are not limited to the shapes shown in the figures in the embodiments.

[0171] The hemostatic device may be configured to stop bleeding at a puncture site other than a puncture site formed on a hand. For example, the hemostatic device may be applied to stop bleeding at a puncture site formed on a patient's arm or leg by using the pressing member of the embodiment. [Explanation of symbols]

[0172] 10 Hemostatic devices 100 Cover member 110 Main body 110a: Inner surface of main body 110b Outer surface of main body 115 Intermediate area 120 Sheet material 122 Base end of cover member 130 Holding part 131 Top area 132 Bottom area 133 Curved Area 200 Pressing member 210 Expansion member 210a lumen 211 Edge of expansion member 260 Marker section 300 Support member 300a inner surface of support member 300b Outer surface of support member 301 Upper end 302 Lower end 303 Side part 304 Side part 305 Middle Section 410 First Belt Body 420 Second Belt Body 430 Third Belt Body 600 Introducer A1 Center line of first belt A2 Center line of second band A3 Center line of third body Lp intersection c1 Center of extension member wa: Vertical width of the extension member wb Width of extension member t1 Thickness of the side part w1 Width of top edge w2 Width of bottom edge G1 Center of gravity of support member H hand H1 right hand Ar Forearm fb between fingers Sb snuff box B1 Metacarpal bone of index finger B2 Thumb metacarpal T1 extensor pollicis longus tendon T2 extensor pollicis brevis tendon V1 vessel (distal radial artery) V2 Artery located in snuffbox p1 1st puncture site (puncture site) p2 2nd puncture site (puncture site)

Claims

1. a cover member configured to cover a puncture site formed in a patient; a pressing member disposed on the cover member and configured to press the puncture site; a support member disposed on the cover member so as to cover the pressing member and made of a material harder than a material of the pressing member; the cover member includes a main body portion in which the pressing member is located, a first band portion configured to be placed between the patient's fingers and extending from the main body portion in a first direction, a second band portion extending from the main body portion in a second direction different from the first direction, and a third band portion facing the second band portion across the pressing member and extending in a third direction different from the first direction and the second direction; The pressing member and the supporting member are located on an extension line of the first band portion, The pressing member is an expansion member configured to be expandable by injection of a fluid, The expansion member has a marker portion for aligning the expansion member with the puncture site, A hemostatic device, wherein the marker portion is located on the main body portion at the intersection of the center line of the first band portion, the center line of the second band portion, and the center line of the third band portion, or on the base end side of the intersection.

2. the support member has a position that is a center of gravity of an outer shape of the support member in a plan view, The hemostatic device according to claim 1 , wherein the marker portion is located closer to the base end of the main body portion than the center of gravity.

3. The support member has a shape that is symmetrical with respect to a center line of the first band portion in the main body portion, The hemostatic device according to claim 2 , wherein the marker portion and the center of gravity are located on a center line of the first band portion.

4. The support member has an upper end portion located on the first band portion side and forming an end portion of the support member; a lower end forming an end opposite the upper end, The hemostatic device according to claim 2 or 3, wherein a width of the upper end portion is configured to be larger than a width of the lower end portion so that the center of gravity is located on the upper end portion side.

5. The hemostatic device according to claim 4 , wherein the lower end portion of the support member has a linear flat portion in a plan view.

6. the support member has a side surface portion connecting the upper end portion and the lower end portion, The hemostatic device according to claim 4 or 5, wherein the thickness of the side surface portion is configured to decrease from the upper end side toward the lower end side.

7. The hemostatic device according to any one of claims 4 to 6, wherein the lower end of the support member is located at a position coinciding with a proximal edge of the expansion member.

8. The hemostatic device according to claim 1, wherein an inner surface of the support member is curved toward the second band portion and toward the third band portion.

Images