Hemostatic device

Abstract

To provide a hemostatic device capable of reducing a patient's feeling of discomfort by a first belt body part arranged in a part between fingers, which is located between two adjacent fingers.SOLUTION: A cover member 100 equipped to a hemostatic device 10 includes a body part 110 in which an expansion member 210 is located, a first belt body part 410 configured to be arranged between fingers of a patient extending in a first direction from the body part, a second belt body part 420 extending in a second direction different from the first direction from the body part, and a third belt body part 430 opposed to the second belt body part sandwiching the expansion member in between, which extends in a third direction different from the first direction and the second direction from the body part. The first belt body part includes a slit part 415 extending in a longitudinal axis direction of the first belt body part.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] As one of the catheter procedures, a procedure 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 diagnose or treat 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 parts for fixing the pressing member to the patient's hand, and a support member for pressing the pressing member against the patient's hand. The plurality of band parts include a first band part (finger band) that is arranged so as to be hooked onto interdigital portions between the patient's fingers, and a second band part and a third band part (fixing band) that are arranged along the outer circumference of the patient's hand. [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 on a patient's limb, the surgeon places the hemostatic device on the patient's limb so that the puncture site is covered with the cover member. At that time, the surgeon places the hemostatic device on the patient's limb so that the pressing member is located at the puncture site. With the hemostatic device placed so that the cover member covers the puncture site, the surgeon places the first band portion in the inter-finger space between the thumb and index finger of the patient's hand, and places the second band portion and the third band portion so as to be wrapped around the outer circumference of the patient's hand. The surgeon can secure the hemostatic device to the patient's hand by connecting each band portion to each other.

[0006] When using the above-mentioned hemostatic device to stop bleeding, various problems arise depending on the width of the first band portion that is placed in the interdigital area.

[0007] In the hemostatic device, if the width of the first band part is formed too small, the fixing force of the first band part to the inter-finger part is reduced, and the fixation may come off. In addition, if the first band part is tightly fastened to the inter-finger part, the first band part bites into the inter-finger part, causing pain to the patient. On the other hand, if the width of the first band part is formed too large, the fastening force applied to the inter-finger part is dispersed, so that the biting into the inter-finger part can be reduced. However, the movement of the thumb and index finger is restricted by the first band part, causing discomfort to the patient. In addition, if the width of the first band part is adjusted to a certain appropriate width, the occurrence of each of the above problems can be prevented, but since the first band part has a certain width, the flexibility (ease of bending) of the cover member is reduced at the connection part between the end of the first band part on the support member side and the support member, and when the patient moves the two fingers in a direction to approach each other, the cover member has difficulty following the curved surface of the hand, which may cause discomfort to the patient. Furthermore, when a patient moves his or her thumb or index finger, both ends (edges) in the width direction of the first band portion may come into contact with the thumb or index finger, causing the patient to feel pain.

[0008] The present invention has been made in light of the above-mentioned problems, and aims to provide a hemostatic device that can reduce the discomfort felt by the patient by using a first band portion that is placed in the interdigital area between adjacent fingers. [Means for solving the problem]

[0009] A hemostatic device according to one embodiment of the present invention has a cover member configured to cover a puncture site formed in a patient, and a pressing member disposed on the cover member and configured to press the puncture site, the cover member comprising 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, 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 from the main body portion in a third direction different from the first and second directions, the first band portion having a slit portion extending in a longitudinal direction of the first band portion.

[0010] A hemostatic device according to another aspect of the present invention comprises a cover member configured to cover a puncture site formed in a patient, and a pressing member disposed on the cover member and configured to press the puncture site, the cover member comprising 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, 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 from the main body portion in a third direction different from the first and second directions, the first band portion having one end portion located on the main body portion side and the other end portion located opposite the one end portion, the one end portion of the first band portion having a slit portion extending in the longitudinal direction of the first band portion, and the first band portion being fixed to the main body portion in a region including the slit portion of the one end portion of the first band portion. Effect of the Invention

[0011] In one embodiment of the hemostatic device of the present invention, a first band portion disposed in an inter-finger portion between the patient's fingers has a slit portion extending in the longitudinal direction of the first band portion. The slit portion is deformed to widen or narrow in the width direction of the first band portion by an external force applied to the first band portion. The first band portion can be deformed to widen or narrow in width in accordance with the above-mentioned deformation of the slit portion. Therefore, in the above-mentioned hemostatic device, when the first band portion is disposed in the inter-finger portion, the width of the first band portion can be adjusted to an appropriate size according to the width of the inter-finger portion. Therefore, the above-mentioned hemostatic device can prevent the first band portion disposed in the inter-finger portion from causing discomfort or pain to the patient.

[0012] In another embodiment of the hemostatic device of the present invention, a first band portion disposed in an interdigital region between the patient's fingers has a slit portion at one end of the first band portion, the slit portion extending in the longitudinal direction of the first band portion. The first band portion is fixed to the main body portion in a region including the slit portion at one end of the first band portion. The slit portion is deformed to widen or narrow in the width direction of the first band portion due to an external force applied to the first band portion. The fixed position between the first band portion and the main body portion is more flexible at the portion where the slit portion is located than at the portion where the slit portion is not located at one end of the first band portion. Therefore, the fixed position between the first band portion and the main body portion is more likely to bend from the position where the slit portion extends. Therefore, in the above-mentioned hemostatic device, when the first band part is placed in the inter-finger part, the flexibility (ease of bending) of the fixed position between the first band part and the main body part is increased, so that when the finger moves, the fixed position between the first band part and the main body part deforms to fit the curved surface of the hand, improving the ability of the cover member to follow the movement of the hand. Therefore, in the above-mentioned hemostatic device, the first band part placed in the inter-finger part can reduce discomfort caused to the patient when the patient moves their finger. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a plan view of 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 showing the inner side of the support member. [Figure 11] FIG. 4 is an enlarged view of a portion of the first band portion. [Figure 12] 12A is a cross-sectional view taken along the arrows 12A-12A shown in FIG. [Figure 13] FIG. 13 is a diagram for explaining the action and effect of the hemostatic device, showing the state in which the first band portion is placed in an inter-finger area. [Figure 14] 14A is a cross-sectional view of the first band portion taken along arrows 14A-14A shown in FIG. 13. [Figure 15] FIG. 13 is a diagram for explaining the action and effect of the hemostatic device, showing the state in which the first band portion is placed in an inter-finger area. [Figure 16] 16A is a cross-sectional view of the first band portion taken along arrows 16A-16A shown in FIG. 15. [Figure 17] FIG. 13 is a diagram for explaining the action and effect of the hemostatic device, showing the state in which the first band portion is placed in an inter-finger area. [Figure 18]18A is a cross-sectional view of the first band portion taken along arrows 18A-18A shown in FIG. 17. [Figure 19] FIG. 1 shows the palmar side of a patient's right hand with a hemostatic device attached. [Figure 20] FIG. 1 shows a patient's hand (right hand) on which a hemostatic device is to be used. [Figure 21] 1A to 1C are diagrams illustrating a simplified example of how a hemostatic device is used. [Figure 22] 1A to 1C are diagrams illustrating a simplified example of how a hemostatic device is used. [Figure 23] 1A to 1C are diagrams illustrating a simplified example of how a hemostatic device is used. [Figure 24] 24A is a partial cross-sectional view taken along the arrows 24A-24A shown in FIG. 23. [Diagram 25] 25A is a partial cross-sectional view taken along the arrows 25A-25A shown in FIG. 23. [Figure 26] 13 is a diagram showing a part of a first band portion according to Modification 1. FIG. [Figure 27] 27A is a cross-sectional view taken along the arrows 27A-27A shown in FIG. 26. [Figure 28] 13 is a diagram showing a part of a first band portion according to Modification 2. FIG. [Figure 29] 13 is a diagram showing an example of the arrangement of a first band portion according to Modification 3. FIG. [Diagram 30] 13 is a diagram showing a portion of a first band portion according to a second embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] First Embodiment 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.

[0015] 1 to 19 are diagrams illustrating the configuration and effects of a hemostatic device 10 according to the present embodiment.

[0016] 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 20, 23, 24, and 25.

[0017] 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.

[0018] As shown in Figures 20, 23, 24, and 25, 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.

[0019] As shown in Fig. 20, 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.

[0020] 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.

[0021] The hemostatic device 10 will now be described in more detail.

[0022] <Hemostatic device> Generally speaking, as shown in Figures 1, 2, 23, 24, and 25, the hemostatic device 10 has a cover member 100 configured to cover the first puncture site p1, and a pressing member 200 arranged on the cover member 100 and configured to press against the first puncture site p1.

[0023] 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.

[0024] <Pressing member> The pressing member 200 can be configured, for example, by 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 by an expansion member 210 will be described.

[0025] As shown in Figures 6 and 7, 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.

[0026] A tube member 283 (see FIGS. 1 and 2) is connected to the inner cavity 210a of the expansion member 210.

[0027] 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.

[0028] 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 .

[0029] The outer peripheral edge 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.

[0030] The film-like member constituting the expansion member 210 can be made of, for example, a resin material having a predetermined thickness.

[0031] The material of the membrane-like member constituting the expansion member 210 is not particularly limited, but may be, for example, 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 resin, polymer alloy, laminate, etc.). The cover member 100 described later may be made of, for example, the same materials as those exemplified above.

[0032] 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.

[0033] In this embodiment, the inner surface 110a of the main body part 110 is configured with a surface located on the body surface side of the right hand H1 in the lower surface region 132 of the holding part 130 and in the region 121a surrounding the periphery of the holding part 130 (the region located around the holding part 130 and between the holding part 130 and each of the band parts 410, 420, 430) (see Figs. 23 and 24). The outer surface 110b of the main body part 110 is configured with a surface located facing the outside in the upper surface region 131 of the holding part 130 and in the region surrounding the periphery of the holding part 130.

[0034] Fig. 8 shows a plan view of the support member 300 as seen 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.

[0035] When the expansion member 210 is in a contracted state, the expansion member 210 has a vertical width wa passing through a center c1 of the expansion member 210, and a horizontal width wb passing through the center c1 of the expansion member 210 and being perpendicular to the vertical width wa.

[0036] The center c1 of the extension member 210 is located at the center of the outer shape shown in the plan view of Fig. 8. The extension member 210 can be formed, for example, so that the horizontal width wb is shorter than the vertical width wa. In this embodiment, the extension member 210 has a substantially elliptical shape that is rotationally symmetric with respect to the center c1 in the plan view shown in Fig. 8.

[0037] The extension member 210 can be disposed so that the center c1 of the extension member 210 is located closer to the lower end 302 side of the center of gravity G1 of the outer shape of the support member 300.

[0038] As shown in FIGS. 21, 22, and 23, the expansion member 210 has a marker portion 260 for aligning the expansion member 210 with the first puncture site p1.

[0039] In this embodiment, the marker portion 260 is located at a position overlapping with the center c1 of the expansion member 210, as shown in FIG.

[0040] 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.

[0041] 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.

[0042] There are no particular limitations on the specific shape, color, formation method, etc. of the marker portion 260. The marker portion 260 may be configured as, for example, a circular marker that is entirely colored, a marker that is configured with a transparent center and a rectangular frame, a rectangular marker that is entirely colored, or the like.

[0043] The planar shape of the expansion member 210 is not limited to an oval shape, and the expansion member 210 may be configured to have, for example, a circular, elliptical, rectangular, or other planar shape.

[0044] 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.

[0045] <Cover material> As shown in Figures 5, 6, and 7, 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 positioned 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.

[0046] 5, 6, and 7, the main body 110 includes a support member 300 formed of a material harder than the expansion member 210. The support member 300 is configured to overlap with the expansion member 210 in the plan view shown in FIGS.

[0047] 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.

[0048] 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).

[0049] 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 of the main body portion 110 to form the holding portion 130 having an insertion portion g into which the support member 300 can be inserted.

[0050] The first end 121 located at the tip side of the folded-back portion of the sheet material 120 is connected to the sheet material 120 at a position further tip than the upper end 301 of the support member 300, as shown in Figures 5 and 6.

[0051] 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.

[0052] 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.

[0053] As shown in Figures 1, 2, 4, and 5, 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 an intermediate portion 413 extending between the one end portion 411 and the other end portion 412.

[0054] As shown in FIGS. 1, 5 and 11, the first band portion 410 has a slit portion 415 extending in the longitudinal direction of the first band portion 410 (the direction along the central axis A1 of the first band portion 410).

[0055] The slit portion 415 in this specification can be configured, for example, by a hole penetrating the first band portion 410 in the thickness direction or a gap dividing the first band portion 410 in the width direction. However, the specific configuration of the slit portion 415 is not particularly limited as long as the first band portion 410 can impart flexibility to the main body portion 110 at the connection position between one end portion 411 of the first band portion 410 and the main body portion 110 and / or as long as the first band portion 410 can impart mobility to widen or narrow the width of the first band portion 410. For example, there is no particular limit to the length of the slit portion 415 along the long axis direction of the first band portion 410, the range in which the slit portion 415 is formed, the shape of the slit portion 415 (extension pattern in a plan view), etc.

[0056] As shown in FIG. 23, the first band portion 410 can be positioned so that it is hooked onto the inter-finger area fb located between the thumb and index finger of the patient's right hand H1 when the expansion member 210 is placed at the first puncture site p1.

[0057] The first band portion 410 can achieve the following effects by providing the slit portion 415. Figures 13 to 18 show the state in which the first band portion 410 is placed on the inter-finger portion fb of the patient's right hand H1.

[0058] For example, as shown in Figures 13 and 14, when the hemostatic device 10 is worn on a patient whose inter-finger portion fb is wide, the slit portion 415 of the first band portion 410 expands in the width direction of the first band portion 410 in accordance with the width of the inter-finger portion fb. As the slit portion 415 deforms, the portion of the first band portion 410 disposed in the inter-finger portion fb expands, and the contact area with the inter-finger portion fb increases. Therefore, the hemostatic device 10 can increase the fixing force of the first band portion 410 to the inter-finger portion fb.

[0059] Also, for example, as shown in Figs. 15 and 16, when the hemostatic device 10 is attached to a patient whose inter-finger portion fb is small, the slit portion 415 of the first band portion 410 narrows in the width direction of the first band portion 410 according to the width of the inter-finger portion fb. Therefore, the first band portion 410 is adjusted to an appropriate size so that the width of the portion of the first band portion 410 arranged in the inter-finger portion fb does not become excessively small. The first band portion 410 can maintain the contact area between the first band portion 410 and the inter-finger portion fb at a predetermined size. Therefore, the hemostatic device 10 can prevent the fixing force of the first band portion 410 to the inter-finger portion fb from becoming excessively small.

[0060] Also, for example, as shown in Figs. 17 and 18, when the hemostatic device 10 is attached to a patient whose inter-finger portion fb is quite small in width, the first band portion 410 deforms to have a V-shape according to the width of the inter-finger portion fb. Therefore, the first band portion 410 can be appropriately positioned even for a patient whose inter-finger portion fb is quite small in width. Furthermore, by deforming the first band portion 410 to have a V-shape as shown in Fig. 18, it is possible to prevent both ends (edges) of the first band portion 410 in the width direction from digging into the thumb or index finger adjacent to the inter-finger portion fb. Therefore, even when the first band portion 410 is applied to a patient whose inter-finger portion fb is quite small in width, it is possible to prevent the fixing force of the first band portion 410 to the inter-finger portion fb from being significantly reduced, and to prevent the patient from experiencing discomfort such as pain.

[0061] 13 to 18, when a patient wears the hemostatic device 10 and moves the thumb of the right hand H1 closer to the little finger, a part of the main body 110 (the position of the main body 110 that overlaps with the slit portion 415 at the fixed position between the first band portion 410 and the main body 110) deforms to follow the curved surface of the right hand H1. Therefore, the hemostatic device 10 can reduce discomfort caused to the patient when the patient's fingers move, by using the first band portion 410 arranged in the inter-finger portion fb. Specifically, when the thumb of the right hand H1 is moved toward the little finger while wearing the hemostatic device 10, the main body portion 110 is pulled toward the second band portion 420 and the third band portion 430 so as to conform to the curved surface of the right hand H1, whereby a part of the main body portion 110 (the position of the main body portion 110 overlapping with the slit portion 415 at the fixed position between the first band portion 410 and the main body portion 110) is deformed to conform to the curved surface of the right hand H1. Therefore, the hemostatic device 10 can reduce discomfort caused to the patient when the fingers of the right hand H1 move.

[0062] 1 and 5, the hemostatic device 10 has a slit portion 415 extending from the intermediate portion 413 to one end portion 411. The hemostatic device 10 has one end portion 411 connected to the main body portion 110 of the cover member 100. This provides the following effects.

[0063] For example, if the slit portion 415 extends only halfway through the middle portion 413 so that the end of the slit portion 415 is located at the middle portion 413, when the first band portion 410 is deformed so that the width of the first band portion 410 becomes narrower, one side 413a and the other side 413b of the middle portion 413 located on either side of the slit portion 415 of the first band portion 410 overlap near the end of the slit portion 415 located at the middle portion 413, and a convex wrinkle that protrudes to the opposite side of the body surface of the right hand H1 is formed in the middle portion 413. When such a convex wrinkle is formed, the first band portion 410 becomes partially hard, so that the patient feels pain when the convex wrinkle comes into contact with the right hand H1 of the patient. In addition, when the above-mentioned convex wrinkle is formed in the first band portion 410, surrounding objects and the like are easily caught in the above-mentioned convex wrinkle.

[0064] In the hemostatic device 10, the slit portion 415 extends from the middle portion 413 to the one end portion 411, and the one end portion 411 is connected to the main body portion 110 of the cover member 100. Therefore, in the hemostatic device 10, the first band portions 410 are unlikely to overlap each other near the one end portion 411 where the end portion of the slit portion 415 is located. Therefore, the hemostatic device 10 can suppress the formation of the above-mentioned convex wrinkles in the first band portion 410. Furthermore, in the hemostatic device 10, the slit portion 415 extends from the middle portion 413 to the one end portion 411, so that, as shown in FIG. 19, in a state where the first band portion 410 is placed in the inter-finger portion fb of the patient's right hand H1, the slit portion 415 can be placed from a position on the back side of the patient's right hand H1 to a position on the palm side of the patient's right hand H1. Therefore, in the hemostatic device 10, the slit portion 415 can be appropriately placed along the range where the inter-finger portion fb of the right hand H1 is located.

[0065] 19, the first band part 410 can be connected to the second band part 420 via a fourth fixing portion 540 arranged near the other end part 412. If the slit part 415 extends to the other end part 412 of the first band part 410, when the first band part 410 is connected to the second band part 420, the other end part 412 cannot be fixed firmly to the second band part 420, and the fixing force may decrease. For this reason, it is preferable that the slit part 415 is configured not to extend to the other end part 412 of the main body part 110.

[0066] As shown in FIGS. 11 and 12, one end 411 of the first band portion 410 includes a first end 411a and a second end 411b facing the first end 411a with the slit portion 415 interposed therebetween.

[0067] In this embodiment, the first band portion 410 has a bifurcated structure in which the first band portion 410 is bifurcated in a predetermined range from one end portion 411 to the other end portion 412 by a slit portion 415 extending to the one end portion 411 .

[0068] 12, the first end 411a is fixed to the outer surface 110b of the main body 110. The second end 411b is fixed to the inner surface 110a of the main body 110.

[0069] The first band portion 410 has the main body portion 110 located between the first end portion 411a and the second end portion 411b. The first band portion 410 has the first end portion 411a and the second end portion 411b separated from each other, and each is individually fixed to the main body portion 110. In addition, the first end portion 411a and the second end portion 411b have a height difference in the thickness direction of the main body portion 110 because the main body portion 110 is located between them. Therefore, when the first end portion 411a of the first band portion 410 moves in the width direction of the first band portion 410, the first band portion 410 can move in a relatively wide range without being restrained by the second end portion 411b. Similarly, when the second end portion 411b of the first band portion 410 moves in the width direction of the first band portion 410, the first band portion 410 can move in a relatively wide range without being restrained by the first end portion 411a. Therefore, when the first band portion 410 is deformed by the slit portion 415, the hemostatic device 10 is easily deformed so that one side 413a and the other side 413b of the middle portion 413 facing each other across the slit portion 415 overlap. This increases the range of motion of the first band portion 410 when it deforms to expand in the width direction or when it deforms to narrow in the width direction, thereby further improving the convenience of the hemostatic device 10.

[0070] The one end 411 of the first band portion 410 may be fixed to only one of the inner surface 110a or the outer surface 110b of the main body portion 110. When the one end 411 of the first band portion 410 is configured to have a plurality of portions (e.g., the first one end 411a and the second one end 411b), each portion can be selectively fixed to the outer surface 110b and / or the inner surface 110a of the main body portion 110. For example, the first band portion 410 can be configured such that the first one end 411a and the second one end 411b are fixed to the inner surface 110a of the main body portion 110. Even with this configuration, when the patient moves the thumb of his / her right hand H1 closer to his / her little finger, a part of the main body portion 110 (the position of the main body portion 110 that overlaps with the slit portion 415 at the fixed position of the first band portion 410 and the main body portion 110) deforms to conform to the curved surface of the right hand H1, so that the hemostatic device 10, by virtue of the first band portion 410 positioned in the interdigital portion fb, can reduce discomfort felt by the patient when the patient's fingers move.

[0071] As shown in Figures 1, 2, 4, and 5, 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 an intermediate portion 423 extending between the one end portion 421 and the other end portion 422.

[0072] One end 421 of the second band portion 420 can be fixed to the inner surface 110a of the main body portion 110. The second direction in which the second band portion 420 extends is not particularly limited as long as it is a direction different from the first direction in which the first band portion 410 extends.

[0073] As shown in Figures 1, 2, 4, and 5, 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 an intermediate portion 433 extending between the one end portion 431 and the other end portion 432.

[0074] One end 431 of the third band portion 430 can be fixed to the inner surface 110a of the main body portion 110. The third direction in which the third band portion 430 extends is not particularly limited as long as it is a direction different from the first direction in which the first band portion 410 extends and the second direction in which the second band portion 420 extends.

[0075] As shown in FIG. 23, 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 arranged so as to be wrapped around the outer periphery of the right hand H1.

[0076] 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.

[0077] The method for fixing each of the band portions 410, 420, 430 to the main body portion 110 is not particularly limited, and for example, fusion or adhesion can be used.

[0078] 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.

[0079] As shown in FIG. 1, a first fastening portion 510 is disposed on the outer surface of the middle portion 423 of the second band portion 420 .

[0080] As shown in FIG. 1, a second fastening portion 520 is disposed on the outer surface of the middle portion 433 of the third band portion 430 .

[0081] As shown in FIG. 2, a third fastening portion 530 is disposed on the inner surface of the middle portion 423 of the second band portion 420 .

[0082] As shown in FIG. 2, a fourth fastening portion 540 is disposed on the inner surface of the middle portion 413 of the first band portion 410 .

[0083] 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).

[0084] The second band portion 420 and the third band portion 430 are configured to be detachable via a third fixing portion 530 located on the inner surface of the middle portion 423 of the second band portion 420 and a second fixing portion 520 located on the outer surface of the middle portion 433 of the third band portion 430. The first band portion 410 and the second band portion 420 are configured to be detachable via a fourth fixing portion 540 located on the inner surface of the middle portion 413 of the first band portion 410 and a first fixing portion 510 located on the outer surface of the middle portion 423 of the second band portion 420.

[0085] 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.

[0086] <Supporting member> 8 to 10 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.

[0087] The support member 300 can be placed in an insertion portion g of the holding portion 130, as shown in FIG.

[0088] As shown in Figures 4, 5, and 8, the support member 300 is located on the first band portion 410 side and has an upper end portion 301 that forms the end of the support member 300, a lower end portion 302 that forms the end opposite the upper end portion 301, and a pair of side portions 303, 304 that connect the upper end portion 301 and the lower end portion 302.

[0089] 8 and 23, 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.

[0090] 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.

[0091] 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.

[0092] 8, the support member 300 has an intermediate position 305 located between the upper end portion 301 and the lower end portion 302. The intermediate position 305 is located midway in the vertical direction connecting the upper end portion 301 and the lower end portion 302.

[0093] As shown in FIGS. 7 and 9, the outer surface 300b of the support member 300 is curved towards the second band portion 420 and the third band portion 430.

[0094] The radius of curvature of the outer surface 300b of the support member 300 can be formed to be approximately constant at each portion of the support member 300 in the vertical direction, for example.

[0095] 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.

[0096] The width w1 of the upper end 301 is formed 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 position 305. In this embodiment, the support member 300 has a substantially trapezoidal shape in which the width w1 of the upper end 301 is formed 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 position 305 of the support member 300.

[0097] In this specification, as shown in FIG. 8, 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 position 305 of the support member 300. The width w2 of the lower end 302 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 lower end portion 302 of the support member 300 can be defined as the length of a straight line connecting the vertices located at each corner 306a, 306b.

[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 and 10.

[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] 9 and 10, the support member 300 is configured such 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. Therefore, 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. 23.

[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 that overlaps 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 that overlaps with the marker portion 260 are formed transparently. When the members 100, 150, 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, 150, and 300 when attaching the hemostatic device 10 to the patient's right hand H1 as shown in Figs. 20 to 23. Note that the term "transparent" in this specification 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 member 283 is connected to the other end of the buffer member 282. The inner cavity of the tube member 283 communicates with the space of the buffer member 282. In addition, the tube member 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 member 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 member 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 section 281, the buffer member 282, and the tube member 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. Also, the injection section 281 is not particularly limited in terms of its specific configuration, etc., as long as it is capable of supplying fluid to the inner cavity 210a of the expansion member 210 and discharging fluid from the inner cavity 210a of the expansion member 210.

[0113] <Examples of hemostatic device use> Next, an example of how the hemostatic device 10 can be used 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. 21 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. 21. 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. 20). 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. 21, 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, and 9). 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. 22, the surgeon can press the support member 300 against the right hand H1 from the outer surface 300b side so as to follow the outer circumference of the right hand H1 as shown in Fig. 25. 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] As shown in Fig. 23, 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 brings the first fixing part 510 (see Fig. 1) located on the outer surface of the second band part 420 into contact with the fourth fixing part 540 (see Fig. 2) located on the inner surface of the first band part 410, thereby connecting the first band part 410 and the second band part 420 via the fixing parts 510, 540 (see Fig. 19).

[0121] Each part of the patient's right hand H1 (for example, around the snuff box Sb) has an inclined portion (see FIG. 20). The shape of the inclined portion of the right hand H1 depends on the individual patient. For example, if the inner surface 300a of the support member 300 is formed in a flat shape, it is difficult to arrange the support member 300 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 25). 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.

[0122] With the hemostatic device 10 attached to the patient's right hand H1 in the above-described procedure, the surgeon connects a syringe to the injection part 281. The surgeon operates the syringe to inject air into the expansion member 210, thereby expanding the expansion member 210. As shown in Figures 24 and 25, when the expansion member 210 expands, the hemostatic device 10 applies a compressive force to the first puncture site p1.

[0123] 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.

[0124] When performing hemostasis using the hemostatic device 10, the surgeon can, for example, strongly tighten the first band portion 410 arranged at the interdigital portion fb in order to increase the fixing force of the support member 300 to the patient's right hand H1. By strongly tightening the first band portion 410, the surgeon can firmly fix the support member 300 to the patient's right hand H1 even if the support member 300 is placed in an unstable state on the patient's right hand H1. However, if the first band portion 410 is tightened too much, the patient may feel pain. Therefore, if the first band portion 410 cannot be tightened too much due to pain felt by the patient, the hemostatic device 10 may be placed with the inner surface 300a of the support member 300 inclined with respect to the body surface of the patient's right hand H1. Specifically, the upper end 301 of the support member 300 on which the first band portion 410 is disposed is raised to a position that is excessively farther from the body surface of the patient's right hand H1 than the lower end 302 located on the opposite side to the upper end 301. As a result, the hemostatic device 10 is positioned with the support member 300 tilted such that the distance between the inner surface 300a of the support member 300 and the body surface of the patient's right hand H1 gradually narrows from the upper end 301 to the lower end 302 of the support member 300.

[0125] 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. 24. 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.

[0126] 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 Fig. 7 and Fig. 25). As shown in Fig. 25, 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 inner surface 300a of the support member 300 presses the expansion member 210 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 portions 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.

[0127] 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. 23. 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.

[0128] 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. Effect of claim 1 As described above, the hemostatic device 10 according to this embodiment includes the cover member 100 configured to cover the first puncture site p1, and the expansion member 210 (pressing member 200) arranged on the cover member 100 and configured to compress the first puncture site p1. The cover member 100 includes a main body portion 110 in which the expansion member 210 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 expansion member 210 and extending from the main body portion 110 in a third direction different from the first and second directions. The first band portion 410 has a slit portion 415 extending in the longitudinal direction of the first band portion 410.

[0129] In the hemostatic device 10 configured as described above, the first band portion 410 arranged in the inter-finger portion fb located between the patient's fingers has a slit portion 415 extending in the longitudinal direction of the first band portion 410. The slit portion 415 is deformed to widen or narrow in the width direction of the first band portion 410 by an external force applied to the first band portion 410. The first band portion 410 can be deformed to widen or narrow in the width direction of the first band portion 410 in accordance with the above-mentioned deformation of the slit portion 415. Therefore, the hemostatic device 10 can adjust the width of the first band portion 410 to an appropriate size according to the width of the inter-finger portion fb when the first band portion 410 is arranged in the inter-finger portion fb. Therefore, the hemostatic device 10 can prevent the first band portion 410 arranged in the inter-finger portion fb from causing discomfort or pain to the patient.

[0130] The slit portion 415 extends from the middle portion 413 to the one end portion 411 .

[0131] In the hemostatic device 10 configured as described above, the first band portions 410 are less likely to overlap each other near the one end 411 where the end of the slit portion 415 is located. Therefore, the hemostatic device 10 can suppress the formation of convex wrinkles in the middle portion 413. This makes it possible for the hemostatic device 10 to prevent the middle portion 413 from partially hardening and to prevent surrounding objects and the like from becoming easily caught in convex wrinkles formed in the middle portion 413.

[0132] One end 411 of the first band portion 410 includes a first end 411a and a second end 411b facing the first end 411a across the slit portion 415. The first end 411a is fixed to the outer surface 110b of the main body portion 110, and the second end 411b is fixed to the inner surface 110a of the main body portion 110.

[0133] According to the hemostatic device 10 configured as described above, when the first end 411a moves in the width direction of the first band 410, the first band 410 can move in a relatively wide range without being constrained by the second end 411b. Also, when the second end 411b moves in the width direction of the first band 410, the first band 410 can move in a relatively wide range without being constrained by the first end 411a. Therefore, when the first band 410 is deformed by the slit 415, the hemostatic device 10 is easily deformed so that one side 413a and the other side 413b of the middle portion 413 facing each other across the slit 415 overlap. Therefore, the hemostatic device 10 has a large range of movement when the first band 410 is deformed to expand in the width direction or when the first band 410 is deformed to narrow in the width direction, and the convenience is further improved.

[0134] Moreover, the hemostatic device 10 according to this embodiment includes a cover member 100 configured to cover the first puncture site p1, and an expansion member 210 (pressing member 200) arranged on the cover member 100 and configured to press the first puncture site p1. The cover member 100 includes a main body portion 110 on which the expansion member 210 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 expansion member 210 and extending from the main body portion 110 in a third direction different from the first and second directions. The first band portion 410 has one end portion 411 located on the main body portion 110 side, and the other end portion 412 located on the opposite side to the one end portion 411. One end 411 of the first band portion 410 has a slit portion 415 extending in the longitudinal direction of the first band portion 410, and the first band portion 410 is fixed to the main body portion 110 in an area including the slit portion 415 of the one end 411 of the first band portion 410.

[0135] In the hemostatic device 10 configured as described above, the first band portion 410, which is placed in the interdigital portion between the patient's fingers, has a slit portion 415 at one end 411 of the first band portion 410, which extends in the longitudinal direction of the first band portion 410. The first band portion 410 is fixed to the main body portion 110 in a region including the slit portion 415 at one end 411 of the first band portion 410. The slit portion 415 is deformed to widen or narrow in the width direction of the first band portion 410 due to an external force applied to the first band portion 410. In addition, the fixing position of the first band portion 410 and the main body portion 110 is such that the flexibility of the portion where the slit portion 415 is located is higher than that of the portion where the slit portion 415 of the one end 411 of the first band portion 410 is not located. Therefore, the fixed position between the first band portion 410 and the main body portion 110 is easily bent from the position where the slit portion 415 extends. Therefore, in the above-mentioned hemostatic device 10, when the first band portion 410 is placed in the inter-finger portion, the flexibility (ease of bending) of the fixed position between the first band portion 410 and the main body portion 110 is increased, so that when the right hand H1 moves, the fixed position between the first band portion 410 and the main body portion 110 deforms to follow the curved surface of the right hand H1, improving the ability of the cover member 100 to follow the movement of the right hand H1. Therefore, in the above-mentioned hemostatic device 10, the first band portion 410 placed in the inter-finger portion can reduce discomfort caused to the patient when the fingers of the patient's right hand H1 move.

[0136] 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.

[0137] <Variation 1> Fig. 26 shows a first band portion 410A according to Modification 1. Fig. 27 shows a cross-sectional view taken along the arrows 27A-27A shown in Fig. 26.

[0138] 26 and 27, the first band portion 410A according to the first modification has a curved portion 418 in which the middle portion 413 curves toward the slit portion 415. The curved portion 418 is curved in a convex shape toward the outer surface of the first band portion 410A.

[0139] In the first band portion 410A according to the first modification, the curved portion 418 is formed in the middle portion 413, so that when the first band portion 410A is placed in the inter-finger portion fb, the middle portion 413 is easily deformed to form a V shape (see FIG. 18). Therefore, even when the width of the slit portion 415 is small, the one side 413a and the other side 413b of the middle portion 413, which are positioned with the slit portion 415 therebetween, are easily overlapped. Therefore, the first band portion 410A makes it possible to adjust the width of the middle portion 413 to an appropriate size according to the width of the inter-finger portion fb.

[0140] <Variation 2> FIG. 28 shows a first band portion 410B according to the second modification.

[0141] As shown in FIG. 28, the first band portion 410B has gaps 419a and 419b located at the ends of the slit portion 415.

[0142] The gaps 419a and 419b are formed to have a width greater than the width of the slit portion 415 other than the ends of the first band portion 410C.

[0143] 28, the slit portion 415 does not have to extend to the one end 411. However, in this configuration, when the first band portion 410B is placed in the inter-finger portion fb, wrinkles are likely to form near each end of the slit portion 415. The areas near the gaps 419a, 419b located at each end of the slit portion 415 are more likely to deform than other parts of the middle portion 413. Therefore, when the first band portion 410B is placed in the inter-finger portion fb, the first band portion 410B can effectively prevent wrinkles from forming near each end of the slit portion 415.

[0144] <Variation 3> FIG. 29 shows an example of the arrangement of a first band portion 410 according to the third modification.

[0145] When the pressing member 200 is configured with the expansion member 210 and the tube member 283 is connected to the expansion member 210 as in the hemostatic device 10 according to the embodiment described above, the tube member 283 can be inserted through the slit portion 415 as shown in FIG. 29. The tube member 283 can be inserted through the slit portion 415 from the inner surface 110a side of the main body portion 110 and pulled out to the outer surface 110b side of the main body portion 110. By arranging the tube member 283 in this manner, the surgeon can prevent the tube member 283 from interfering with the surgeon's fingers and the like when wrapping each band portion 410, 420, 430 around the patient's right hand H1. Therefore, the surgeon can smoothly fix each band portion 410, 420, 430 to the patient's right hand H1.

[0146] 29, when one end 411 of the first band portion 410 is fixed to the main body portion 110 in a region including the slit portion 415, when the thumb of the right hand H1 is moved toward the little finger while wearing the hemostatic device 10, the main body portion 110 is pulled toward the second band portion 420 and the third band portion 430 so as to follow the curved surface of the right hand H1, so that a part of the main body portion 110 (the position of the main body portion 110 overlapping the slit portion 415 at the fixed position between the first band portion 410 and the main body portion 110) is more likely to deform starting from the tube member 283. Therefore, the ability of the part of the main body portion 110 (the position of the main body portion 110 overlapping the slit portion 415 at the fixed position between the first band portion 410 and the main body portion 110) to follow the curved surface of the right hand H1 is further improved. Therefore, the hemostatic device of variant 3 can reduce discomfort felt by the patient when the fingers of the right hand H1 are moved.

[0147] 29 can reliably prevent the tube member 283 from being pinched between the first band part 410 and the body surface of the patient's right hand H1 when the hemostatic device 10 is worn. Therefore, the hemostatic device of Modification 3 can prevent the first band part 410 from pressing the tube member 283 against the body surface of the patient's right hand H1 when the hemostatic device is worn on the right hand H1, thereby reducing discomfort to the patient.

[0148] Next, a first band portion according to a second embodiment of the present invention will be described. In the description of the second embodiment, the description of the members already described in the first embodiment and the procedure for using the hemostatic device will be omitted as appropriate. Furthermore, the contents not specifically described in the second embodiment can be the same as those in the first embodiment.

[0149] <Second embodiment> FIG. 30 shows a first band portion 410C according to the second embodiment.

[0150] The hemostatic device according to the second embodiment can be configured so that the structure other than the first band portion 410C is substantially the same as the hemostatic device 10 according to the first embodiment. Therefore, a description of the structure other than the first band portion 410C will be omitted.

[0151] As shown in FIG. 30, the first band portion 410C of the second embodiment is fixed to the main body portion 110 of the cover member 100 with the first end portion 441 and the second end portion 451 overlapping in the longitudinal direction of the first band portion 410C.

[0152] The first band portion 410C is made up of two band-shaped members, a first member 440 and a second member 450.

[0153] The one end portion 411C is composed of a first end portion 441 located on the main body portion 110 side of the first member 440, and a second end portion 451 located on the main body portion 110 side of the second member 450. The first end portion 441 is fixed to the outer surface 110b of the main body portion 110. The second end portion 451 is fixed to the inner surface 110a of the main body portion 110.

[0154] The other end 412C is composed of a first other end 442 located opposite the first one end 441 of the first member 440, and a second other end 452 located opposite the second one end 451 of the second member 450.

[0155] The intermediate portion 413C is composed of an intermediate portion 443 of the first member 440 and an intermediate portion 453 of the second member 450.

[0156] The first member 440 and the second member 450 overlap each other in part in the width direction along the long axis direction of the first band portion 410A. A gap 415C between the first member 440 and the second member 450 is configured to allow the width of a middle portion 453 formed by the first member 440 and the second member 450 to be variable, similar to the slit portion 415 according to the first embodiment.

[0157] First other end portion 442 of first member 440 and second other end portion 452 of second member 450 are fixed by fixing portion 417. The method of forming fixing portion 417 that fixes first other end portion 442 and second other end portion 452 is not particularly limited, but for example, adhesion or fusion can be adopted.

[0158] 30, in a state before the hemostatic device is attached to the patient's right hand H1, the first band portion 410 according to the second embodiment has its components 440, 450 that partially overlap each other in the width direction of the first band portion 410. Therefore, when the first band portion 410C is placed in the inter-finger portion fb, the first band portion 410C is easily movable in the direction in which the components 440, 450 overlap each other. Therefore, when the first band portion 410C is placed in the inter-finger portion fb, the first band portion 410C can smoothly deform so that the width of the first band portion 410C decreases according to the width of the inter-finger portion fb.

[0159] The hemostatic device of the present invention has been described above 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.

[0160] 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.

[0161] 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.

[0162] The pressing member that applies a compressive force to the puncture site is not limited to an expansion member (balloon). The pressing member can be made of, for example, a resin material such as plastic that is capable of applying a compressive force to the puncture site, a member made of gel, or the like, an elastic material such as a sponge-like substance, a fiber aggregate such as cotton, metal, a member having a specific three-dimensional shape (sphere, ellipsoid, triangular pyramid, etc.), or an appropriate combination of these.

[0163] 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]

[0164] 10 Hemostatic devices 100 Cover member 110 Main body 200 Pressing member 210 Expansion member 210a Lumen of expansion member 300 Support member 410 First Belt Body 410A 1st band part 410B 1st band body part 410C 1st band body part 411 One end of the first belt body 411a First end 411b Second one end 412 Other end of first belt part 413 Middle part of the first belt 413a One side of the middle section 413b The other side of the middle part 415 Slit section 415C Gap 417 Fixed part 418 Curved section 419a Gap 419b Gap 420 Second Belt Body 430 Third Belt Body 440 First Component 441 First end 442 First other end 450 Second component 451 Second end 452 Second other end 600 Introducer A1 Central axis of the first band 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, 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 from the main body portion in a third direction different from the first direction and the second direction; The first band has a slit extending in a longitudinal direction of the first band.

2. 2. The hemostatic device according to claim 1, wherein the first band portion has one end portion located on the main body portion side, another end portion located opposite the one end portion, and an intermediate portion located between the one end portion and the other end portion, and the slit portion extends from the intermediate portion to the one end portion.

3. 3. The hemostatic device according to claim 2, wherein the one end of the first band portion comprises a first one end and a second one end opposite the first one end across the slit portion, the first one end being fixed to an outer surface of the main body portion and the second one end being fixed to an inner surface of the main body portion.

4. The hemostatic device according to claim 2 or 3, wherein the intermediate portion is curved toward the slit portion.

5. The hemostatic device according to any one of claims 1 to 4, wherein the slit portion has a gap portion at an end portion of the slit portion.

6. The pressing member includes an expansion member expandable by injection of a fluid, and an injection member for injecting a fluid into the expansion member, The hemostatic device according to any one of claims 1 to 5, wherein the injection member has a connector portion and a tube member that connects the connector portion and the expansion member, and the tube member is inserted through the slit portion.

7. 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, 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 from the main body portion in a third direction different from the first direction and the second direction; The first band portion is composed of two band-shaped members, a first member and a second member, and is fixed to the main body portion in a state in which a first end portion of the first member located on the main body portion side and a second end portion of the second member located on the main body portion side are overlapped.

8. 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, 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 from the main body portion in a third direction different from the first direction and the second direction; The first band portion has one end portion located on the main body portion side and another end portion located on the opposite side to the one end portion, The one end of the first band portion has a slit portion extending in a longitudinal direction of the first band portion, The first band portion is fixed to the main body portion in a region including the slit portion at the one end of the first band portion.

9. The pressing member includes an expansion member expandable by injection of a fluid, and an injection member for injecting a fluid into the expansion member, The hemostatic device according to claim 8 , wherein the injection member has a connector portion and a tube member that connects the connector portion and the expansion member, the tube member being inserted through the slit portion.

Images