hemostatic instruments

Abstract

[Problem] To provide a hemostasis device in which an injection member for injecting a fluid into an expansion member can be fixed to a cover member in a simple manner, and the occurrence of displacement or the like of the hemostasis device and the expansion member can be prevented when the injection member is fixed to the cover member. [Solution] An injection member 200 in a hemostasis device 10 is provided with a connector part 210 and a tube member 220 connected to an expansion member 150, in which a fixing member 230 that is configured so as to be capable of fixing the injection member to a cover member 100 is provided with a main body part 231 that connects the connector part to the tube member, claw parts 233, 234 that extend in parallel with the main body part toward the expansion member side, and connection parts 236, 237 that is configured so as to be capable of inserting the cover member between the main body part and the claw parts and connects the main body part to the claw part, and the width w3 of each of the claw parts is smaller than the width w4 of the main body part at a position at which each of the claw parts is overlapped with the main body part when observed in the plan view.

Description

TECHNICAL FIELD

[0001] The present invention relates to a hemostatic device. BACKGROUND ART

[0002] As one of catheterization procedures, a procedure is known in which various medical long bodies are introduced into a blood vessel through a puncture site formed by puncturing a blood vessel in a limb such as a patient's arm or hand, to perform diagnosis and treatment on a lesion site. For example, Patent Document 1 discloses a hemostatic device for stopping bleeding at a puncture site formed to allow access to blood vessels running in the hand (including the distal radial artery).

[0003] The hemostatic device of Patent Document 1 includes an expandable member that applies compressive force to a puncture site formed on a patient's hand, a fixing member for fixing the pressing member to the patient's hand, an injection member comprising a port (connector portion) configured to allow injection of a fluid for expanding the expandable member, and a tube portion that connects the connector portion and the lumen of the expandable member, and a tube fixing portion located on the fixing member and configured to be capable of fixing the tube member. PRIOR ART DOCUMENTS PATENT DOCUMENTS

[0004] PATENT DOCUMENT 1 International Publication No. 2019 / 090104 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION

[0005] When a surgeon, such as a physician (hereinafter referred to as "surgeon") uses the hemostatic device described in Patent Document 1 to stop bleeding at a puncture site formed on a patient's hand, the surgeon can prevent the expansion member from shifting position away from the puncture site on the patient's hand by positioning the expansion member on the puncture site and its surrounding area and then fixing the hemostatic device using the bands. Furthermore, by fixing the tube member to the tube fixing part, the surgeon can prevent the tube member from moving in accordance with the patient's hand movements.

[0006] However, the hemostatic device described in Patent Document 1 may have the following problems.

[0007] In the hemostatic device described in Patent Document 1, a groove is provided in the tube fixing part for fixing the tube member. Therefore, when the surgeon attaches or detaches the tube member from the tube fixing part, the surgeon needs to deform the tube fixing part (for example, elastically deform) in the direction of widening the groove by applying an external force to the tube member. At this time, the force required by the surgeon to deform the tube fixing part in the direction of widening the groove is determined by the mechanical configuration of the tube fixing part, but this configuration may not be designed with the surgeon's operability or convenience in mind.

[0008] For example, if the force required by the operator to attach or detach the tube component from the tube fixing part is large, the external force (force applied by the operator) may be transmitted to the expansion member via the fixing member on which the tube fixing part is provided, potentially causing unintended external force to be applied to the puncture site. Furthermore, the transmission of external force to the tube fixing part may unintendedly transmit external force to the expansion member, potentially causing the expansion member to shift position away from the puncture site formed on the patient's hand.

[0009] Furthermore, Patent Document 1 discloses a hemostatic device having a structure in which a port into which a fluid for expanding the expansion member can be injected is directly connected to the expansion member.

[0010] The port directly connected to the expansion member is positioned to protrude from the outer surface of the cover member, opposite the body surface. Therefore, when the surgeon expands the expansion member and connects a fluid supply device such as a syringe to the port, the pushing force at the time of connection is transmitted to the entire hemostatic device, which may cause the hemostatic device to become displaced or tilted. If the hemostatic device becomes displaced or tilted as described above, the expansion member may become displaced, or the direction of compression applied by the expansion member to the puncture site may change in an unintended direction.

[0011] The present invention has been made in response to the above-mentioned problems, and aims to provide a hemostatic device that allows an injection member for injecting fluid into an expansion member to be easily fixed to a cover member, and that prevents misalignment of the hemostatic device and the expansion member when fixing the injection member to the cover member. [Means for solving the problem]

[0012] A hemostatic device according to one embodiment of the present invention comprises: a cover member configured to cover a puncture site formed on a patient; an expansion member connected to the cover member and configured to compress the puncture site; an injection member connected to the expansion member and configured to inject fluid into the expansion member; and a fixing member configured to fix the injection member to the cover member, wherein the injection member has a connector portion and a tube member connected to the expansion member; the fixing member has a main body portion connecting the connector portion and the tube member, a claw portion extending parallel to the main body portion toward the expansion member side, and a connecting portion configured to allow the cover member to be inserted between the main body portion and the claw portion, and connecting the main body portion and the claw portion, wherein the width of the claw portion is smaller than the width of the main body portion at the position where the claw portion and the main body portion overlap in a plan view.

[0013] A hemostatic device according to another embodiment of the present invention comprises: a cover member configured to cover a puncture site formed on a patient; an expansion member connected to the cover member and configured to compress the puncture site; an injection member connected to the expansion member and configured to inject fluid into the expansion member; and a fixing member configured to fix the injection member to the cover member, wherein the injection member has a connector portion and a tube member connected to the expansion member; the fixing member has a main body portion connecting the connector portion and the tube member, a claw portion extending parallel to the main body portion toward the expansion member side, and a connecting portion configured to allow the cover member to be inserted between the main body portion and the claw portion and connecting the main body portion and the claw portion, wherein the main body portion has an inclined portion that slopes toward the claw portion side, and at least a part of the inclined portion is configured to be located on the main body portion at a position closer to the base end than the tip of the claw portion. [Effects of the Invention]

[0014] In one embodiment of the present invention, the hemostatic device described above allows the injection member to be fixed to the cover member by inserting the cover member between the main body and the claw portion while the main body of the fixing member is connected to the connector portion and the tube portion. When inserting the cover member between the main body and the claw portion, the surgeon can insert the cover member between the main body and the claw portion by bringing the fixing member closer to the cover member in a direction substantially parallel to the surface direction of the cover member. Therefore, when fixing the injection member to the cover member, the surgeon can prevent unnecessary force from being applied in the direction of pressing the hemostatic device toward the surface of the patient's body. Thus, when fixing the injection member to the cover member, the hemostatic device can prevent the hemostatic device attached to the patient's body from shifting position or the expansion member from shifting position. In addition, for example, the cover member may bend in accordance with the body's movements when the hemostatic device is attached to the patient. In the above hemostatic device, the width of the claw portion is smaller than the width of the main body portion at the point where the claw portion and the main body portion overlap in a plan view. Therefore, with the above-mentioned hemostatic device, the cover member can be smoothly inserted between the main body and the claw even when the cover member is curved to follow the patient's movements.

[0015] In another embodiment of the present invention, a hemostatic device can fix an injection member to a cover member by inserting a cover member between the main body and the claw portion, with the main body of the fixing member connected to the connector portion and the tube portion. When inserting the cover member between the main body and the claw portion, the surgeon can insert the cover member between the main body and the claw portion by bringing the fixing member closer to the cover member in a direction substantially parallel to the surface direction of the cover member. Therefore, when fixing the injection member to the cover member, the surgeon can prevent unnecessary force from being applied in the direction of pressing the hemostatic device toward the surface of the patient's body. Thus, when fixing the injection member to the cover member, the hemostatic device can prevent the hemostatic device attached to the patient's body from shifting position or the expansion member from shifting position. Furthermore, the above hemostatic device is configured such that the main body has an inclined portion that slopes toward the claw portion. In addition, at least a part of the inclined portion of the main body is configured to be located on the proximal end side of the main body, rather than the tip of the claw portion. Therefore, the above-described hemostatic device is configured such that when the surgeon inserts the cover member between the main body and the claw, the inclined portion guides the cover member to a position closer to the connecting portion than the tip of the claw. Thus, when the surgeon inserts the cover member between the main body and the claw, they can guide the cover member along the inclined portion, thereby shaping the cover member and smoothly inserting it between the main body and the claw. [Brief explanation of the drawing]

[0016] [Figure 1] This figure shows a hemostatic device according to the first embodiment, and is a plan view of each band portion as seen from the outer surface side. [Figure 2] This figure shows a hemostatic device according to the first embodiment, and is a plan view as seen from the inner surface side of each band portion. [Figure 3] This diagram shows a magnified view of a portion of the hemostatic device as seen from the outer surface side of the main body of the cover member. [Figure 4] This is a magnified view of a portion of the hemostatic device as seen from the inner surface side of the main body of the cover member. [Figure 5]It is an enlarged view showing a part of the hemostatic device as viewed from the outer surface side of the main body portion of the cover member. [Figure 6] It is a partial cross-sectional view of the hemostatic device taken along arrows 6A-6A shown in Figure 5, and is a view showing a state when the expansion member is expanded. [Figure 7] It is a partial cross-sectional view of the hemostatic device taken along arrows 7A-7A shown in Figure 5, and is a view showing a state when the expansion member is expanded. [Figure 8] It is a plan view of the support member. [Figure 9] It is a perspective view of the support member as viewed from the lower end side. [Figure 10] It is a perspective view showing the inner surface side of the support member. [Figure 11] It is a perspective view of the injection member. [Figure 12] It is a cross-sectional view of the main body portion of the injection member taken along arrows 12A-12A shown in Figure 11. [Figure 13] It is a side view of the injection member as viewed from the direction of arrow 13A shown in Figure 12. [Figure 14] It is a bottom view of the injection member as viewed from the direction of arrow 14A shown in Figure 12. [Figure 15] It is a view showing a state when the cover member is inserted between the main body portion and the claw portion of the fixing member. [Figure 16] It is a view showing a state when the cover member is inserted between the main body portion and the claw portion of the fixing member. [Figure 17] It is a view for explaining the operational effect of the fixing member. [Figure 18] It is a view for explaining the operational effect of the fixing member. [Figure 19] It is a view showing the hand (right hand) of a patient to whom the hemostatic device according to the first embodiment is applied. [Figure 20] It is a view schematically showing a usage example of the hemostatic device according to the first embodiment. [Figure 21] It is a view schematically showing a usage example of the hemostatic device according to the first embodiment. [Figure 22] It is a view schematically showing a usage example of the hemostatic device according to the first embodiment. [Figure 23]This is a partial cross-sectional view along the arrow 23A-23A shown in Figure 22. [Figure 24] This is a partial cross-sectional view along the arrows 24A-24A shown in Figure 22. [Figure 25] This diagram illustrates the fixing position of the injection member. [Figure 26] This diagram illustrates the fixing position of the injection member. [Figure 27] This diagram illustrates the fixing position of the injection member. [Figure 28] This is a side view of the injection member according to Modification 1. [Figure 29] This is a partial cross-sectional view along the arrows 29A-29A shown in Figure 28. [Figure 30] This is a side view of the injection member according to modified example 2. [Figure 31] This is a side view of the injection member according to modified example 3. [Figure 32] This diagram shows a simplified example of the use of a hemostatic device according to Modification 4. [Figure 33] This diagram shows a simplified example of the use of a hemostatic device according to Modification 4. [Figure 34] This is a perspective view showing a fixing member according to the second embodiment. [Figure 35] Figure 34 is a side view of the fixing member as seen from the direction of arrow 35A. [Figure 36] This figure shows a simplified example of the use of the fixing member according to the second embodiment. [Modes for carrying out the invention]

[0017] Embodiments of the present invention will be described below with reference to the attached drawings. The following description is not intended to limit the technical scope or the meaning of terms as defined in the claims. Furthermore, the dimensional ratios in the drawings are exaggerated for illustrative purposes and may differ from the actual ratios.

[0018] <First Embodiment> Figures 1 to 18 are diagrams illustrating the hemostatic device 10 according to this embodiment. Figures 19 to 27 are diagrams illustrating examples of the use of the hemostatic device 10.

[0019] The hemostatic device 10 can be used, for example, to stop bleeding at the puncture site (hereinafter also referred to as "first puncture site p1") when removing the sheath tube 610 of the introducer 600 that was placed at the first puncture site p1 formed on the hand H located distal to the patient's forearm Ar (towards the fingertips), as shown in Figures 19, 22, 23, and 24.

[0020] The specific location of the puncture site targeted for hemostasis by the hemostatic device 10 is not particularly limited, but in the first embodiment, a first puncture site p1 and a second puncture site p2 are given as examples.

[0021] The first puncture site p1 is located in the distal radial artery (hereinafter also referred to as "vascular V1"), which runs along the back of the right hand H1 distal to the forearm Ar of the patient, and is distal to the snuffbox Sb of the palmar artery. As shown in Figures 19, 22, 23, and 24, 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 positioned in a predetermined location that avoids the metacarpal bones B1 of the index finger and B2 of the thumb. The snuffbox Sb is a cavity in the hand located near the radius when the patient extends the thumb of the hand H.

[0022] The second puncture site p2, as shown in Figure 19, is a puncture site formed in artery V2 located in the snuffbox Sb of the palmar artery running along the back of the right hand H1. The second puncture site p2 is located on the Ar side (proximal side) of the patient's forearm than the first puncture site p1, and is situated between the extensor pollicis longus tendon T1 and the extensor pollicis brevis tendon T2 on the back of the patient's right hand H1. Furthermore, the second puncture site p2 is positioned in a predetermined location that avoids the positions of the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb.

[0023] Furthermore, 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 on 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 on the patient's right hand H1.

[0024] The hemostatic device 10 will be described in detail below.

[0025] <Hemostatic device> The hemostatic device 10, in general terms, as shown in Figures 1, 2, 11, 22, 23, and 24, includes a cover member 100 configured to cover the first puncture site p1, an expansion member 150 connected to the cover member 100 and configured to compress the first puncture site p1, an injection member 200 connected to the expansion member 150 and configured to inject fluid into the expansion member 150, and a fixing member 230 configured to fix the injection member 200 to the cover member 100.

[0026] <Expansion Member> As shown in Figures 6 and 7, the expansion member 150 has a lumen 150a into which a fluid can be injected. The expansion member 150 is configured to expand when a fluid is injected into the lumen 150a and to contract when the fluid injected into the lumen 150a is discharged. The fluid used to expand the expansion member 150 is, for example, a gas such as air. Figures 6 and 7 show a cross-sectional view of the expansion member 150 in its expanded state.

[0027] A tube member 220 (see Figures 1 and 2) is connected to the lumen 150a of the expansion member 150.

[0028] As shown in Figures 6 and 7, the extension member 150 can be made of, for example, a membrane-like member (sheet material) connected to the sheet material 120 that constitutes the main body portion 110 of the cover member 100.

[0029] The expansion member 150 can be positioned to form a cavity 150a between itself and the lower surface region 132 of the holding portion 130 formed by the sheet material 120.

[0030] The outer edge of the film-like member constituting the expansion member 150 constitutes the edge portion 151 of the expansion member 150. The edge portion 151 of the expansion member 150 can be connected to the sheet material 120 by means of, for example, fusion or adhesive bonding.

[0031] The film-like member constituting the expansion member 150 can be made of, for example, a resin material having a predetermined thickness.

[0032] The material of the film-like member constituting the expansion member 150 is not particularly limited, but 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), polyvinylidene chloride, silicone, polyurethane, polyamide elastomer, polyurethane elastomer, polyester elastomer, nylon, nylon elastomer, or any combination thereof (blended resin, polymer alloy, laminate, etc.) can be used. The cover member 100, which will be described later, can be made of the same materials as those exemplified above, for example.

[0033] As shown in Figures 6 and 7, the extension member 150 is positioned on the inner surface 110a side of the main body portion 110 of the cover member 100.

[0034] In this embodiment, the inner surface 110a of the main body 110 is the surface that is positioned on the body surface side of the right hand H1 in the lower surface region 132 of the holding portion 130 (see Figures 23 and 24). The outer surface 110b of the main body 110 is the surface that is positioned facing the outside in the upper surface region 131 of the holding portion 130.

[0035] Figure 8 shows a plan view of the support member 300 as seen from the outer surface 300b side. Figure 8 shows the positional relationship of the contracted expansion member 150, the support member 300, and the holding part 130. The expansion member 150 and the holding part 130 are indicated by dashed lines.

[0036] When the expansion member 150 is contracted, it has a vertical width wa passing through the center c1 of the expansion member 150, and a horizontal width wb perpendicular to the vertical width wa and also passing through the center c1 of the expansion member 150.

[0037] The center c1 of the extension member 150 is located at the center of the outer shape shown in the plan view of Figure 8. The extension member 150 can be formed, for example, such that its width wb is shorter than its height wa. In this embodiment, the extension member 150 has a roughly oval shape that is rotationally symmetric with respect to the center c1 in the plan view shown in Figure 8.

[0038] The extension member 150 can be positioned such that its center c1 is located on the lower end 302 side of the support member 300, relative to the center of gravity G1 of the outer shape of the support member 300.

[0039] As shown in Figures 20, 21, and 22, the expansion member 150 has a marker portion 160 for aligning the expansion member 150 with the first puncture site p1.

[0040] In this embodiment, the marker portion 160 is positioned to coincide with the center c1 of the extension member 150, as shown in Figure 8.

[0041] As shown in Figures 4 and 8, the marker portion 160 can be composed of a transparent central part surrounding the center c1 and a colored circular frame surrounding the central part.

[0042] As shown in Figures 6 and 7, the marker portion 160 is positioned on the outer surface of the expansion member 150. Alternatively, the marker portion 160 may be positioned on the inner surface of the expansion member 150 facing the lumen 150a.

[0043] There are no particular restrictions on the specific shape, color, or formation method of the marker portion 160. The marker portion 160 can be composed of, for example, a circular marker composed entirely of color, a marker composed of a transparent center and a rectangular frame, or a rectangular marker composed entirely of color.

[0044] The planar shape of the extension member 150 is not limited to an oval shape. The extension member 150 may be configured to have a planar shape such as a circle, ellipse, or rectangle.

[0045] The specific configuration of the expansion member 150 is not particularly limited. The expansion member 150 may be formed, for example, by joining the edge of one sheet-like member to one sheet-like member while forming a cavity 150a between the two sheet-like members. In this case, the surface of one sheet-like member is connected to the sheet material 120 that constitutes the main body 110 of the cover member 100. Alternatively, the expansion member 150 can be composed of, for example, a single bag-shaped member shaped to have a cavity 150a on its inside. In this case, a part of the surface of the bag-shaped member is connected to the sheet material 120 that constitutes the main body 110 of the cover member 100.

[0046] <Cover component> As shown in Figures 5, 6, and 7, the cover member 100 comprises a main body portion 110 on which the expansion member 150 is located, a first band portion 410 configured to be positioned between the patient's fingers and extending in a first direction from the main body portion 110, a second band portion 420 extending in a second direction different from the first direction from the main body portion 110, and a third band portion 430 facing the second band portion 420 with the expansion member 150 in between, and extending in a third direction different from the first and second directions from the main body portion 110.

[0047] As shown in Figures 5, 6, and 7, the main body 110 includes a support member 300 made of a harder material than the expansion member 150. The support member 300 is configured to overlap with the expansion member 150 in the plan view shown in Figures 4 and 5.

[0048] As shown in Figures 6 and 7, the main body 110 is composed of a two-layer structure and includes a holding portion 130 for holding 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 with the support member 300 in between, and a curved region 133 connecting the upper surface region 131 and the lower surface region 132 at the base end side of the support member 300 (the lower end 302 side of the support member 300).

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

[0051] As shown in Figures 5 and 6, the first end portion 121, located on the leading edge side of the folded portion of the sheet material 120, is connected to the sheet material 120 at a position closer to the leading edge than the upper end portion 301 of the support member 300.

[0052] As shown in Figures 6 and 8, the base end portion 122 of the cover member 100, which is composed of a part of the sheet material 120, is located in the curved region 133.

[0053] As shown in Figure 6, the holding portion 130 has an insertion portion g closed between the first end 121 and the curved region 133 in the vertical width wa direction of the expansion member 150 (see Figure 11). Also, as shown in Figure 7, the holding portion 130 has an insertion portion g that communicates with the outside on the second band portion 420 side and the third band portion 430 side in the horizontal width wb direction of the expansion member 150 (see Figure 11).

[0054] As shown in Figure 4, each band portion 410, 420, and 430 can be connected to any position in the area surrounding the holding portion 130 on the main body portion 110. Furthermore, each band portion 410, 420, and 430 can be connected to the surface located on the body surface side of the right hand H1 within the aforementioned area. Each band portion 410, 420, and 430 can be connected to the main body portion 110 by, for example, fusion or adhesive. Note that each band portion 410, 420, and 430 may be integrally constructed with the main body portion 110.

[0055] As shown in Figures 1, 2, 4, and 5, the first band portion 410 has one end 411 connected to the main body portion 110 of the cover member 100, another end 412 located on the opposite side of the one end 411, and a main body portion 413 extending between the one end 411 and the other end 412.

[0056] As shown in Figure 22, the first band portion 410 can be positioned so as to hook onto the interdigital portion fb located between the thumb and index finger of the patient's right hand H1, with the expansion member 150 positioned at the first puncture site p1.

[0057] As shown in Figures 1, 2, 4, and 5, the second band portion 420 has one end 421 connected to the main body portion 110 of the cover member 100, another end 422 located on the opposite side of the one end 421, and a main body portion 423 extending between the one end 421 and the other end 422.

[0058] As shown in Figures 1, 2, 4, and 5, the third band portion 430 has one end 431 connected to the main body portion 110 of the cover member 100, another end 432 located on the opposite side of the one end 431, and a main body portion 433 extending between the one end 431 and the other end 432.

[0059] As shown in Figure 22, the second band portion 420 and the third band portion 430 can be positioned to wrap around the outer circumference of the right hand H1 when attaching the hemostatic device 10 to the patient's right hand H1.

[0060] The constituent materials of each strip portion 410, 420, and 430 are not particularly limited, but can be made of, for example, polyvinyl chloride resin, polyurethane resin, polyester resin, etc. Furthermore, there are no particular restrictions on the shape, length, thickness, etc., of each strip portion 410, 420, and 430.

[0061] Each of the band sections 410, 420, and 430 is provided with four fixing parts: a first fixing part 510, a second fixing part 520, a third fixing part 530, and a fourth fixing part 540, which allow the cover member 100 to be fixed to the right hand H1.

[0062] As shown in Figure 1, the first fixing portion 510 is positioned on the outer surface of the main body portion 423 of the second band portion 420.

[0063] As shown in Figure 1, the second fixing portion 520 is positioned on the outer surface of the main body portion 433 of the third band portion 430.

[0064] As shown in Figure 2, a third fixing portion 530 is positioned on the inner surface of the main body portion 423 of the second band portion 420.

[0065] As shown in Figure 2, a fourth fixing portion 540 is positioned on the inner surface of the main body portion 413 of the first band portion 410.

[0066] The first fixing part 510 and the second fixing part 520 are made up of the male side of the hook-and-loop fastener. The third fixing part 530 and the fourth fixing part 540 are made up of the female side of the 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® or Velcro®.

[0067] The second band portion 420 and the third band portion 430 are detachably connected via a third fixing portion 530 located on the inner surface of the main body portion 423 of the second band portion 420 and a second fixing portion 520 located on the outer surface of the main body portion 433 of the third band portion 430. Furthermore, the first band portion 410 and the second band portion 420 are detachably connected via a fourth fixing portion 540 located on the inner surface of the main body portion 413 of the first band portion 410 and a first fixing portion 510 located on the outer surface of the main body portion 423 of the second band portion 420.

[0068] The specific structure of each fixing part 510, 520, 530, and 540 is not limited as long as the cover member 100 can be fixed to the right hand H1 by connecting each band part 410, 420, and 430 to each other with the hemostatic device 10 positioned on the right hand H1. For example, the installation of some fixing parts can be omitted or the position of the fixing parts on each band part 410, 420, and 430 can be changed as desired. Also, if each fixing part 510, 520, 530, and 540 is made of hook-and-loop fasteners, the male and female sides of the hook-and-loop fasteners can be swapped. Furthermore, each fixing part 510, 520, 530, and 540 may be made of, for example, a snap, button, clip, or a connecting mechanism having a frame part with a projection and an engaged part with a hole that can engage with the frame part.

[0069] <Support member> Figures 8 to 10 show the support member 300. In the figures, arrows X1-X2 indicate the vertical direction of the support member 300 (same direction as the vertical width wa direction of the extension member 150), arrows Y1-Y2 indicate the width direction of the support member 300 (same direction as the horizontal width wb direction of the extension member 150), and arrows Z1-Z2 indicate the thickness direction of the support member 300.

[0070] As shown in Figure 6, the support member 300 can be placed within the insertion portion g of the holding portion 130.

[0071] As shown in Figures 4, 5, and 8, the support member 300 is located on the side of the first band portion 410 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 to the upper end portion 301, and a pair of side portions 303 and 304 that connect the upper end portion 301 and the lower end portion 302.

[0072] As shown in Figures 8 and 22, the upper end portion 301 can be positioned on the fingertip side (tip side) of the fingers when the hemostatic device 10 is attached to the patient's right hand H1. The lower end portion 302 can be positioned on the forearm side (proximal end side) when the hemostatic device 10 is attached to the patient's right hand H1. The upper end portion 301 forms the tip of the support member 300, and the lower end portion 302 forms the base end of the support member 300.

[0073] The upper end portion 301 of the support member 300 has a straight, flat portion 301a in a plan view as shown in Figure 8. The flat portion 301a extends in a substantially straight line between the corner portions 306c and 306d located on the upper end portion 301 side.

[0074] The lower end portion 302 of the support member 300 has a straight, flat portion 302a in a plan view as shown in Figure 8. The flat portion 302a extends in a substantially straight line between the corner portions 306a and 306b located on the lower end portion 302 side.

[0075] The support member 300 has an intermediate portion 305 located between the upper end portion 301 and the lower end portion 302 in a plan view as shown in Figure 8. The intermediate portion 305 is located in the middle of the vertical direction connecting the upper end portion 301 and the lower end portion 302.

[0076] As shown in Figures 7 and 9, the outer surface 300b of the support member 300 is curved toward the second band portion 420 and the third band portion 430.

[0077] The radius of curvature of the outer surface 300b of the support member 300 can be formed to be substantially constant in each part of the support member 300 in the longitudinal direction, for example.

[0078] 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 Figure 8.

[0079] The width w1 of the upper end portion 301 is formed to be larger than the width w2 of the lower end portion 302, such that the center of gravity G1 is located on the upper end portion 301 side of 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 portion 301 is formed to be larger than the width w2 of the lower end portion 302. Therefore, the center of gravity G1 of the support member 300 is located at a position shifted by a predetermined distance on the upper end portion 301 side (the lower base side of the trapezoidal shape) of the intermediate portion 305 of the support member 300.

[0080] In this specification, as shown in Figure 8, the width w1 of the upper end portion 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 portion 301 side of the intermediate portion 305 of the support member 300. The width w2 of the lower end portion 302 of the support member 300 can be defined as the length of the 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 begins 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 begins to change in a curved shape. Furthermore, if the corners 306a and 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 by the length of the straight line connecting the vertices located at each corner 306a and 306b.

[0081] 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, as shown in Figures 7 and 10, the inner surface 300a of the support member 300 is curved convexly toward the direction away from the expansion member 150.

[0082] The radius of curvature of the inner surface 300a of the upper end portion 301 of the support member 300 can be made smaller than, for example, the radius of curvature of the inner surface 300a of the lower end portion 302 of the support member 300.

[0083] As shown in Figures 9 and 10, the support member 300 is configured such that the thickness t1 of the side portions 303 and 304 connecting the upper end 301 and the lower end 302 decreases from the upper end 301 to the lower end 302. Therefore, in the cross-sectional view shown in Figure 6 and Figure 23, the support member 300 is inclined such that the distance between the outer surface 300b and the inner surface 300a decreases from the upper end 301 to the lower end 302.

[0084] The four corners 306a, 306b, 306c, and 306d of the support member 300 are formed in a rounded, curved shape.

[0085] Preferably, the hemostatic device 10 has transparent material in the portion of the expansion member 150 where the marker portion 160 is provided, the portion of the cover member 100 that overlaps with the marker portion 160 (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 160. When the members 100, 150, and 300 are configured in this way, as shown in Figures 20 to 22, the surgeon can easily visually confirm the position of the marker portion 160 placed on the expansion member 150 and / or the first puncture site p1 through the transparent portions of the members 100, 150, and 300 when attaching the hemostatic device 10 to the patient's right hand H1. Note that transparent material as used herein includes colored transparent, colorless transparent, and translucent.

[0086] When the expansion member 150 is constructed from the aforementioned materials, the supporting member 300 can be constructed from materials such as acrylic resin, polyvinyl chloride (especially rigid polyvinyl chloride), polyethylene, polypropylene, polyolefins such as 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.

[0087] <Injection material> As shown in Figures 1, 2, and 11, the injection member 200 has a connector portion 210 and a tube member 220 connected to the connector portion 210 and the expansion member 150.

[0088] As shown in Figure 13, the connector portion 210 has a port portion 211 located outside the fixing member 230 and a valve portion 213 located inside the main body portion 231 of the fixing member 230. The valve portion 213 is shown in a simplified manner in each figure, and is omitted in some figures.

[0089] A fluid supply device can be connected to the connector portion 210 to supply fluid to the lumen 150a of the expansion member 150. For example, a syringe (not shown in this specification) can be used as the fluid supply device.

[0090] The valve 213 can be configured, for example, as a check valve. The valve 213 remains closed when the tip of the syringe is not inserted into the connector 210. When the valve 213 is closed, it blocks communication between the lumen of the tube member 220 and the outside of the connector 210. The valve 213 opens when the tip of the syringe is inserted into the connector 210. When the valve 213 opens, the lumen of the tube member 220 and the inside of the tip of the syringe communicate through the internal space 231a (see Figure 12) of the main body 231 where the valve 213 is located.

[0091] As shown in Figures 1 and 2, one end of the tube member 220 is connected to the expansion member 150. The other end of the tube member 220 is connected to the main body 231 of the fixing member 230. The other end of the tube member 220 is located in the internal space 231a of the main body 231 of the fixing member 230.

[0092] The lumen of the tube member 220 is in communication with the internal space 231a of the main body 231 via the other end of the tube member 220. Therefore, the lumen 150a of the expansion member 150 is in communication with the internal space 231a of the main body 231 of the fixing member 230 via the lumen of the tube member 220.

[0093] When expanding the expansion member 150, the surgeon inserts the tip of a syringe (not shown) into the connector part 210 to open the valve part 213. With the valve part 213 open, the surgeon pushes the plunger of the syringe to inject air from inside the syringe into the lumen 150a of the expansion member 150. The expansion member 150 expands when air is injected into the lumen 150a.

[0094] When the surgeon retracts the expansion member 150, he inserts the tip of the syringe into the connector part 210 and then pulls the plunger of the syringe. By performing the above operation, the surgeon can expel the air from the lumen 150a of the expansion member 150 into the syringe.

[0095] <Fixing components> Figures 11 to 14 show views of the fixing member 230 from various directions. Figures 15 and 16 show how the fixing member 230 is fixed to the cover member 100. Figures 17 and 18 show the state after the fixing member 230 has been fixed to the cover member 100.

[0096] As shown in Figures 11, 14, and 16, the fixing member 230 has a main body 231 that connects the connector part 210 and the tube member 220, claw parts 233 and 234 that extend parallel to the main body 231 toward the expansion member 150, and connecting parts 236 and 237 that are configured to allow insertion of the cover member 100 between the main body 231 and the claw parts 233 and 234 and connect the main body 231 and the claw parts 233 and 234.

[0097] The other end of the tube member 220 is connected to the main body 231. In the fixing member 230, the side to which the other end of the tube member 220 is connected is referred to as the "tip side," and the side of the fixing member 230 to which the port portion 211 is located is referred to as the "base end side."

[0098] As shown in Figures 11 and 12, the main body 231 has two claw portions 233 and 234. Hereinafter, claw portion 233 will be referred to as the "first claw portion 233" and claw portion 234 as the "second claw portion 234".

[0099] The first claw portion 233 and the second claw portion 234 extend parallel to each other. A gap g2 into which the cover member 100 can be inserted is formed between the first claw portion 233 and the main body portion 231, and between the second claw portion 234 and the main body portion 231.

[0100] As shown in Figure 14, the width w3 of the first claw portion 233 and the second claw portion 234 is smaller than the width w4 of the main body portion 231 at the point where the first claw portion 233 and the second claw portion 234 overlap with the main body portion 231 in a plan view. The above plan view refers to a plan view seen from the bottom side as shown in Figure 14, or a plan view seen from the top side opposite to the bottom side.

[0101] In this embodiment, the main body portion 231 has two claw portions 233 and 234. When the main body portion 231 is configured in this way, the width w3 of the first claw portion 233 and the second claw portion 234 is defined as the distance between the outermost outermost positions of each claw portion 233 and 234, which are furthest from the center position of the main body portion 231, as shown in Figures 14 and 17.

[0102] As shown in Figure 17, the hemostatic device 10 can be fixed to the cover member 100 by inserting the cover member 100 between the claw portions 233, 234 and the gap g2. When inserting the cover member 100 into the gap g2, the surgeon can easily insert the cover member 100 into the gap g2 by bringing the claw portions 233, 234 closer to the cover member 100 in a direction substantially parallel to the surface direction of the cover member 100. By performing the above procedure, the surgeon can prevent inadvertently applying force to the hemostatic device 10 in a direction that presses the cover member 100 toward the body surface side of the patient's right hand H1 when fixing the fixation member 230 to the cover member 100.

[0103] Furthermore, since the width w3 of the first claw portion 233 and the second claw portion 234 of the fixing member 230 is smaller than the width w4 of the main body portion 231, the following effects are achieved.

[0104] When a hemostatic device is attached to the patient's right hand H1, the cover member may bend in accordance with the movement of the patient's right hand H1. For example, the cover member 100 may bend concavely toward the main body 231, as shown in Figure 17, or convexly toward the main body 231, as shown in Figure 18. When the cover member bends as described above, if the radius of curvature of the cover member (the radius of curvature assuming the shape of the cover member in a front view is an arc) becomes excessively small, the cover member is more likely to interfere with the claw portion when attempting to insert the cover member into the gap g2. In particular, if the width of the first and second claw portions is greater than the width of the main body, and the cover member bends convexly toward the main body, as shown in Figure 18, the cover member becomes even more likely to interfere with the first and second claw portions. As a result, the hemostatic device will not be able to smoothly insert the cover member into the gap.

[0105] In the hemostatic device 10, in a plan view, at the position where the first claw portion 233 and the second claw portion 234 overlap with the main body portion 231, the width w3 of the first claw portion 233 and the second claw portion 234 is smaller than the width w4 of the main body portion 231. Therefore, even when the cover member 100 is curved convexly toward the main body portion 231 as described above, the hemostatic device 10 can suppress interference between the first claw portion 233 and the second claw portion 234 and the cover member 100 when inserting the cover member 100 into the gap g2.

[0106] As shown in Figures 11 and 12, the main body portion 231 has an inclined portion 232 that slopes toward the claw portions 233 and 234.

[0107] The inclined portion 232 is configured such that at least a part of it is located at a position closer to the base end than the respective tips 233a and 234a of the claw portions 233 and 234. In the embodiment shown in Figure 11, the inclined portion 232 extends from a position closer to the tip than the respective tips 233a and 234a of the claw portions 233 and 234 to a position closer to the base end than the respective tips 233a and 234a of the claw portions 233 and 234. As shown in Figures 15 and 16, when the surgeon inserts the cover member 100 into the gap g2, they move the cover member 100 toward the gap g2 from a position closer to the tip than the respective tips 233a and 234a of the claw portions 233 and 234. At this time, the inclined portion 232 guides the cover member 100 toward the gap g2 along the inclined portion 232 while adjusting the shape of the cover member 100. In the embodiment shown in Figure 11, the inclined portion 232 extends from a position closer to the tip of each claw portion 233a, 234a to a position closer to the base of each claw portion 233a, 234a. Therefore, the cover member 100 can be efficiently guided along the inclined portion 232 to the position of each claw portion 233a, 234a. The inclined portion 232 assists in the insertion of the cover member 100 into the gap g2 by guiding the movement of the cover member 100. As a result, the surgeon can smoothly insert the cover member 100 into the gap g2.

[0108] The main body portion 231 can be configured to have a cylindrical outer shape, as shown in Figure 11. Alternatively, the main body portion 231 can be configured to have a circular cross-sectional shape in a direction perpendicular to the extending direction of the main body portion 231, as shown in Figure 12.

[0109] The fixing member 230 may be subjected to various external forces when the cover member 100 is inserted into the gap g2. The main body 231 of the fixing member 230 has a circular cross-sectional shape. Therefore, when an external force is applied to the main body 231 of the fixing member 230, that external force can be deflected along the outer surface of the main body 231. For example, if the fixing member 230 is formed with a cross-sectional shape such as a rectangle, when an external force is applied to the main body 231 as described above, that external force cannot be sufficiently deflected along the outer surface of the main body 231. Therefore, when an external force is applied to the main body 231, the hemostatic device 10 may be displaced or tilted.

[0110] Furthermore, since the main body portion 231 of the fixing member 230 has a circular cross-sectional shape, even when the cover member 100 has a concave curved shape towards the main body portion 231 as shown in Figure 17, or when the cover member 100 has a convex curved shape towards the main body portion 231 as shown in Figure 18, interference between the main body portion 231 and the cover member 100 can be effectively prevented. For example, if the main body portion 231 has a cross-sectional shape such as a rectangle with corners, and the cover member 100 is curved as shown in Figures 17 and 18, when inserting the cover member 100 into the gap g2, the cover member 100 will interfere with the corners of the main body portion 231, making it impossible to smoothly insert the cover member 100 into the gap g2.

[0111] Furthermore, the main body portion 231 can also exhibit the effect of deflecting the above-mentioned external force even if it has an elliptical cross-sectional shape. For this reason, it is preferable that the main body portion 231 be formed with a circular or elliptical cross-sectional shape from the viewpoint of exhibiting the above-mentioned effect of deflecting the external force.

[0112] As shown in Figures 11 and 12, each claw portion 233, 234 has a cylindrical outer shape. Each claw portion 223, 234 has flat portions 233b, 234b on the upper surface on the main body portion 231 side, configured to maintain a flat shape for a part of the cover member 100 when the cover member 100 is inserted between the main body portion 231 and each claw portion 233, 234.

[0113] Each of the flat portions 233b and 234b extends in a straight line in the side view shown in Figure 13. Each of the flat portions 233b and 234b extends substantially parallel to the extending direction of the main body portion 231 and faces the main body portion 231 with a gap g2 formed between them. When the surgeon fixes the fixing member 230 to the cover member 100, the surgeon can easily insert and remove the cover member 100 into and out of the gap g2 by aligning it with each of the flat portions 233b and 234b of the claw portions 233 and 234. Therefore, the surgeon can easily fix the fixing member 230 to the cover member 100.

[0114] As shown in Figures 11 and 13, the connecting portions 236 and 237 are curved from the main body portion 231 toward the respective tips 233a and 234a of the claw portions 233 and 234. Although the shape of the connecting portion 236 is not clearly shown in Figures 11 and 13, the connecting portion 236 has substantially the same shape as the connecting portion 237 and, like the connecting portion 237, is curved toward the tip 233a of the first claw portion 233.

[0115] The surgeon can, for example, attach the hemostatic device 10 to the patient while the fixing member 230 is fixed to the cover member 100. Because the hemostatic device 10 has curved connecting parts 236 and 237 as described above, even if the connecting parts 236 and 237 come into contact with the surface of the patient's right hand H1 when the hemostatic device 10 is attached to the patient while the fixing member 230 is connected to the cover member 100, it is possible to prevent the patient from experiencing pain or other discomfort. Furthermore, because the hemostatic device 10 has curved connecting parts 236 and 237 as described above, it is possible to prevent the connecting parts 236 and 237 from digging into the skin when the patient makes an action such as placing their right hand H1 on a table or the like while the fixing member 230 is fixed to the cover member 100.

[0116] The tips 233a and 234a of each claw portion 233 and 234 can be formed in a rounded shape, as shown in Figure 11. Because the tips 233a and 234a of each claw portion 233 and 234 of the fixing member 230 are formed in a rounded shape, it is possible to prevent damage to the expansion member 150 if the claw portions 233 and 234 unintentionally come into contact with the expansion member 150. In addition, because the tips 233a and 234a of each claw portion 233 and 234 of the fixing member 230 are formed in a rounded shape, even if the claw portions 233 and 234 accidentally come into contact with the patient's body surface when the fixing member 230 is attached to the cover member 100, the pain felt by the patient can be reduced.

[0117] The fixing member 230 according to this embodiment has two cylindrical claw portions 233 and 234. As will be explained in the modified examples described later (see Figures 28 and 29), there are no particular restrictions on the number or shape of the claw portions 233 and 234 arranged on the fixing member 230. However, if the claw portions are formed in a cylindrical shape, it is preferable that they consist of two or more claw portions 233 and 234 spaced at a predetermined distance from each other, as shown in this embodiment. This is for the following reasons. For example, if the fixing member 230 is configured to have one cylindrical claw portion, when the cover member 100 is inserted into the gap g2, the contact area between the cover member 100 and the claw portion becomes excessively small, making it difficult to stably support the cover member 100 between the claw portion and the main body portion 231. Even when the claw portion is formed in a cylindrical shape, as in this embodiment, a predetermined distance is provided between the two claw portions 233 and 234, allowing the cover member 100 to be stably supported between each claw portion 233, 234 and the main body portion 231.

[0118] Furthermore, it is preferable that the claw portion is configured so that the cover member 100 inserted between the main body portion 231 and the claw portion maintains a flat shape. When the cover member 100 inserted between the main body portion 231 and the claw portion can maintain a flat shape, the operability when inserting and removing the claw portion from the cover member 100 is improved. In order to achieve the above effects, it is preferable that the claw portions are arranged with a predetermined distance between them, for example, the two claw portions 233 and 234 shown in this embodiment. The fixing member 230 can support the cover member 100 over a wider range in the direction in which the two claw portions 233 and 234 are arranged side by side, because a predetermined distance is provided between the two claw portions 233 and 234. As a result, the fixing member 230 can maintain the cover member 100 in a flat shape between the main body portion 231 and each claw portion 233 and 234.

[0119] When performing hemostasis using the hemostatic device 10, the position in which the fixing member 230 is fixed to the cover member 100 is not particularly limited. For example, the fixing member 230 can be fixed in a position where a gap is formed between the cover member 100 and the body surface of the right hand H1 when the expansion member 150 is expanded, allowing the claw portions 233 and 234 of the fixing member 230 to be positioned. As such positions, the portion of the main body 110 located between the first band portion 410 and the second band portion 420 (see Figure 22) or the portion near the base end portion 122 of the cover member 100 located on the second band portion 420 side (see Figure 25) can be selected. However, the position in which the fixing member 230 is connected to the cover member 100 is not particularly limited, as long as it is a position in which the tube member 220 is not forcibly pulled when the expansion member 150 is expanded. For example, the fixing member 230 may be fixed to the first band portion 410 as shown in Figure 26, or to the second band portion 420 as shown in Figure 27.

[0120] <Examples of hemostatic device use> Next, an example of how to use the hemostatic device 10 will be explained with reference to Figures 19 to 22.

[0121] The following describes the procedure for using the hemostatic device 10 to stop bleeding at the first puncture site p1 formed on the patient's right hand H1, as shown in Figure 19.

[0122] Figure 20 shows the state after various procedures have been completed using the sheath tube 610 of the introducer 600 inserted into the first puncture site p1.

[0123] When the surgeon attaches the hemostatic device 10 to the patient's right hand H1, he positions the expansion member 150 and the support member 300 so that they overlap at the first puncture site p1, as shown in Figure 20. At this time, the surgeon can appropriately position the expansion member 150 and the support member 300 at the first puncture site p1 by visually confirming the position of the marker portion 160 placed on the expansion member 150 and positioning the marker portion 160 at the first puncture site p1.

[0124] When the surgeon attaches the hemostatic device 10 to the patient's right hand H1, the surgeon can position the support member 300 so that it overlaps 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 Figure 19). The width of the support member 300 shortens from the upper end 301 located toward the fingertip side toward the lower end 302 located toward the forearm Ar side (see Figure 8). Therefore, by positioning the support member 300 so that it overlaps the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb from the back of the patient's right hand H1, the surgeon can position the support member 300 so that it follows the contours of 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 expansion member 150, which is positioned on the inner surface 300a side of the support member 300, and the right hand H1 by positioning the support member 300 along the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb.

[0125] As shown in Figure 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 fixation points 520 and 530 by bringing the third fixation point 530 (see Figure 2), which is located on the inner surface of the second band portion 420, into contact with the second fixation point 520 (see Figure 1), which is located on the outer surface of the third band portion 430. The surgeon can securely wrap each band portion 420 and 430 around the outer circumference of the right hand H1 by connecting the band portions 420 and 430 together with the support member 300 overlapping the metacarpal bone B1 of the index finger and the metacarpal bone B2 of the thumb.

[0126] The outer surface 300b of the support member 300 is curved toward the second band portion 420 side (side portion 303 side) and the third band portion 430 side (side portion 304 side) (see Figures 5, 7, and 9). Therefore, as shown in Figure 21, the surgeon can wrap the second band portion 420 and the third band portion 430 around the patient's right hand H1, and as shown in Figure 24, 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 a result, the hemostatic device 10 can increase the fixing force of the support member 300 and the expansion member 150 against the patient's right hand H1.

[0127] As shown in Figure 22, the surgeon places the first band portion 410 through the interdigital space fb located between the thumb and index finger of the patient's right hand H1, while positioning a portion of the first band portion 410 on the palm side of the patient's right hand H1. At this time, the surgeon can connect the first band portion 410 and the second band portion 420 via the fixation portions 510 and 540 by bringing the fourth fixation portion 540 (see Figure 2), located on the inner surface of the first band portion 410, into contact with the first fixation portion 510 (see Figure 1), located on the outer surface of the second band portion 420.

[0128] Various parts of the patient's right hand H1 (for example, around the snuffbox Sb) have inclined areas (see Figure 19). Furthermore, the shape of the inclined areas of the right hand H1 varies from patient to patient. For example, if the inner surface of the support member is formed in a flat shape, it is difficult to position the support member to conform to the inclined areas of the right hand H1. The hemostatic device 10 has an inner surface 300a of the support member 300 that is curved convexly toward the direction away from the expansion member 150 (see Figures 7 and 24). Therefore, by positioning the inner surface 300a of the support member 300 to overlap with the inclined areas of the patient's right hand H1, the inner surface 300a of the support member 300 can be positioned to conform to the patient's right hand H1. As a result, the hemostatic device 10 can be positioned with the support member 300 overlapping the first puncture site p1, regardless of the patient's dominant hand or the operator's positioning. Therefore, the hemostatic device 10 can appropriately position the support member 300 at a desired location near the first puncture site p1.

[0129] The surgeon attaches the hemostatic device 10 to the patient's right hand H1 using the procedure described above, and connects a syringe to the port portion 211. The surgeon operates the syringe to inject air into the expansion member 150, thereby expanding the expansion member 150. As shown in Figures 23 and 24, when the expansion member 150 of the hemostatic device 10 expands, the expansion member 150 applies a compressive force to the first puncture site p1.

[0130] The support member 300, which is made of a harder material than the expansion member 150, presses the expansion member 150 against the patient's right hand H1 when the expansion member 150 expands while the hemostatic device 10 is attached to the patient's right hand H1. This prevents the expansion member 150 from lifting away from the patient's right hand H1.

[0131] When performing hemostasis using a hemostatic device, the surgeon can tighten the first band, positioned at the interdigital space fb, to increase the fixation force of the support member to the patient's right hand H1. By tightening the first band, the surgeon can securely fix the support member to the patient's right hand H1, even if it is positioned unstable on the patient's right hand H1. However, tightening the first band may cause pain to the patient. Therefore, if the surgeon cannot tighten the first band due to pain or other reasons, the hemostatic device may be positioned with the inner surface of the support member tilted relative to the body surface of the patient's right hand H1. Specifically, the upper end of the support member where the first band is positioned may float excessively farther from the body surface of the patient's right hand H1 than the lower end located on the opposite side of the upper end. As a result, the hemostatic device is positioned at an angle such that the distance between the inner surface of the support member and the surface of the patient's right hand H1 gradually decreases from the upper end to the lower end of the support member.

[0132] The hemostatic device 10 is configured such that the thickness t1 of the side portions 303 and 304 of the support member 300 decreases from the upper end 301 to the lower end 302. In addition, the first band portion 410, which is configured to be positioned in the interdigital 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. With the hemostatic device 10 configured in this way, when the expansion member 150 begins to expand while the support member 300 and expansion member 150 are fixed to the patient's right hand H1, the expansion member 150 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 150. As a result, when the expansion member 150 is expanded, the inner surface 300a of the support member 300 is positioned approximately parallel to the body surface of the patient's right hand H1, as shown in Figure 23. Therefore, when the expansion member 150 is expanded, the hemostatic device 10 can apply a compressive force perpendicular to the first puncture site p1.

[0133] The inner surface 300a of the support member 300 is curved toward the second band portion 420 and the third band portion 430 (see Figure 7). As shown in Figure 24, the hemostatic device 10 is positioned such that when the expansion member 150 is expanded, the inner surface 300a of the support member 300 is aligned with the surface of the patient's right hand H1. When the expansion member 150 expands, the hemostatic device 10 uses the inner surface 300a of the support member 300 to press the expansion member 150 toward the surface of the patient's right hand H1. As a result, when the expansion member 150 is expanded, it applies compressive force to the expansion member 150 from the center side in the width direction of the inner surface 300a of the support member 300 and from the side portions 303 and 304 located at both ends in the width direction of the inner surface 300a of the support member 300 toward the first puncture site p1. Therefore, compared to the case where the inner surface 300a of the support member 300 is formed with a flat surface shape, the hemostatic device 10 can effectively increase the compressive force that the expansion member 150 applies to the first puncture site p1.

[0134] After expanding the expansion member 150, the surgeon removes the sheath tube 610 of the introducer 600 from the first puncture site p1 as shown in Figure 22. While the surgeon is performing hemostasis using the hemostatic device 10, the surgeon confirms that there is no bleeding from the first puncture site p1. If there is bleeding from the first puncture site p1, the surgeon can adjust the amount of air injected into the expansion member 150.

[0135] By following the above procedure, the operator can use the hemostatic device 10 to stop bleeding from the first puncture site p1 formed on the patient's right hand H1.

[0136] With the expansion member 150 expanded, the surgeon can fix the fixing member 230 to the cover member 100 as shown in Figure 22. By fixing the fixing member 230 to the cover member 100, the surgeon can prevent the tube member 220 from moving in accordance with the movement of the patient's right hand H1 when the hemostatic device 10 is attached. Alternatively, the surgeon can fix the fixing member 230 to the cover member 100 in advance before expanding the expansion member 150, and then expand the expansion member 150 after attaching the hemostatic device 10 to the patient's right hand H1.

[0137] As described above, the hemostatic device 10 according to this embodiment comprises a cover member 100 configured to cover the first puncture site p1, an expansion member 150 connected to the cover member 100 and configured to compress the first puncture site p1, an injection member 200 connected to the expansion member 150 and configured to inject fluid into the expansion member 150, and a fixing member 230 configured to fix the injection member 200 to the cover member 100. The injection member 200 has a connector portion 210 and a tube member 220 connected to the expansion member 150. The fixing member 230 has a main body 231 that connects the connector part 210 and the tube member 220, claw parts 233 and 234 that extend parallel to the main body 231 toward the expansion member 150, and connecting parts 236 and 237 that are configured to allow insertion of the cover member 100 between the main body 231 and the claw parts 233 and 234, and connect the main body 231 and the claw parts 233 and 234. The width w3 of the claw parts 233 and 234 is smaller than the width w4 of the main body 231 at the position where the claw parts 233 and 234 and the main body 231 overlap in a plan view.

[0138] As described above, the hemostatic device 10 allows the injection member 200 to be fixed to the cover member 100 by inserting the cover member 100 between the main body 231 and the claw parts 233 and 234, with the main body 231 of the fixing member 230 connecting the connector part 210 and the tube member 220. When the surgeon inserts the cover member 100 between the main body 231 and the claw parts 233 and 234, the surgeon can insert the cover member 100 between the main body 231 and the claw parts 233 and 234 by bringing the fixing member 230 closer to the cover member 100 in a direction substantially parallel to the surface direction of the cover member 100. Therefore, when the surgeon fixes the injection member 200 to the cover member 100, it is possible to prevent unnecessary force from being applied in the direction of pressing the hemostatic device 10 toward the surface of the patient's right hand H1. Therefore, when fixing the injection member 200 to the cover member 100, the hemostatic device 10 attached to the patient's right hand H1 can prevent the hemostatic device 10 from shifting position, or the expansion member 150 from shifting position. Also, for example, when the hemostatic device 10 is attached to the patient, the cover member 100 may bend to follow the body's movements. If the width w3 of the claw portions 233 and 234 is larger than the width w4 of the main body portion 231 at the position where the claw portions 233 and 234 overlap with the main body portion 231, then if the cover member 100 is curved, the claw portions 233 and 234 are more likely to interfere with the cover member 100 when inserting the cover member 100 between the main body portion 231 and the claw portions 233 and 234. In the hemostatic device 10, the width w3 of the claw portions 233 and 234 is smaller than the width w4 of the main body portion 231 at the point where the claw portions 233 and 234 overlap with the main body portion 231 in a plan view. Therefore, even when the cover member 100 of the hemostatic device 10 bends in accordance with the movement of the patient's right hand H1, the cover member 100 can be smoothly inserted between the main body portion 231 and the claw portions 233 and 234.

[0139] Furthermore, the hemostatic device 10 according to this embodiment includes a cover member 100 configured to cover the first puncture site p1, an expansion member 150 connected to the cover member 100 and configured to compress the first puncture site p1, an injection member 200 connected to the expansion member 150 and configured to inject fluid into the expansion member 150, and a fixing member 230 configured to fix the injection member 200 to the cover member 100. The injection member 200 has a connector portion 210 and a tube member 220 connected to the expansion member 150. The fixing member 230 has a main body portion 231 that connects the connector portion 210 and the tube member 220, claw portions 233 and 234 that extend parallel to the main body portion 231 toward the expansion member 150, and connecting portions 236 and 237 that are configured to allow insertion of the cover member 100 between the main body portion 231 and the claw portions 233 and 234, and connect the main body portion 231 and the claw portions 233 and 234. The main body portion 231 has an inclined portion 232 that slopes toward the claw portions 233 and 234, and at least a part of the inclined portion 232 is configured to be located on the main body portion 231 at a position toward the base end than the tips 233a and 234a of the claw portions 233 and 234.

[0140] As described above, the hemostatic device 10 allows the injection member 200 to be fixed to the cover member 100 by inserting the cover member 100 between the main body 231 and the claw parts 233 and 234, with the main body 231 of the fixing member 230 connecting the connector part 210 and the tube member 220. When the surgeon inserts the cover member 100 between the main body 231 and the claw parts 233 and 234, the surgeon can insert the cover member 100 between the main body 231 and the claw parts 233 and 234 by bringing the fixing member 230 closer to the cover member 100 in a direction substantially parallel to the surface direction of the cover member 100. Therefore, when the surgeon fixes the injection member 200 to the cover member 100, it is possible to prevent unnecessary force from being applied in the direction of pressing the hemostatic device 10 toward the surface of the patient's right hand H1. Therefore, when fixing the injection member 200 to the cover member 100, the hemostatic device 10 attached to the patient's right hand H1 is prevented from shifting position, and the expansion member 150 is prevented from shifting position. Furthermore, the hemostatic device 10 is configured such that the main body 231 has an inclined portion 232 that slopes toward the claw portions 233 and 234. In addition, at least a part of the inclined portion 232 of the main body 231 is configured to be located on the proximal end side of the main body 231, beyond the tips 233a and 234a of the claw portions 233 and 234. Therefore, when the surgeon inserts the cover member 100 between the main body 231 and the claw portions 233 and 234, the hemostatic device 10 is configured such that the inclined portion 232 guides the cover member 100 to a position toward the connecting portion 236 and 237 side of the tips 233a and 234a of the claw portions 233 and 234. Therefore, when inserting the cover member 100 between the main body 231 and the claw portions 233 and 234, the surgeon can guide the cover member 100 along the inclined portion 232, thereby shaping the cover member 100 and smoothly inserting it between the main body 231 and the claw portions 233 and 234.

[0141] The main body portion 231 has an inclined portion 232 that slopes toward each claw portion 233, 234. The inclined portion 232 extends from a position closer to the tip of each claw portion 233a, 234a to a position closer to the base of each claw portion 233, 234a.

[0142] With the hemostatic device 10 configured as described above, when inserting the cover member 100 into the gap g2, the inclined portion 232 efficiently guides the cover member 100 to the respective tip 233a and 234a of each claw portion 233 and 234. The inclined portion 232 assists in the insertion of the cover member 100 into the gap g2. Therefore, the surgeon can smoothly insert the cover member 100 into the gap g2.

[0143] The main body 231 can be configured to have a circular or elliptical cross-sectional shape.

[0144] With the hemostatic device 10 configured as described above, the fixing member 230 can deflect external force applied to the main body 231 along the outer surface of the main body 231. Therefore, it is possible to prevent the hemostatic device 10 from shifting position or tilting when external force is applied to the main body 231. Furthermore, even if the cover member 100 has a concave curved shape on the main body 231 side, or a convex curved shape on the main body 231 side, it is possible to effectively prevent interference between the main body 231 and the cover member 100 when inserting the cover member 100 into the gap g2.

[0145] The claw portions 233 and 234 have flat portions 233b and 234b configured to maintain a flat shape for a portion of the cover member 100 when the cover member 100 is inserted between the main body portion 231 and each of the claw portions 233 and 234. Each of the flat portions 233b and 234b faces the main body portion 231 across the gap g2 formed between the main body portion 231 and each of the claw portions 233 and 234.

[0146] With the hemostatic device 10 configured as described above, when the surgeon fixes the fixing member 230 to the cover member 100, the surgeon can easily insert and remove the cover member 100 into the gap g2 by aligning it with the flat portions 233b and 234b of each claw portion 233 and 234. Therefore, the surgeon can easily fix the fixing member 230 to the cover member 100.

[0147] Each connecting portion 236, 237 has a curved shape extending from the main body portion 231 toward the respective tip 233a, 234a of each claw portion 233, 234.

[0148] With the hemostatic device 10 configured as described above, even if the connecting parts 236 and 237 come into contact with the surface of the patient's right hand H1 when the hemostatic device 10 is attached to the patient with the fixing member 230 connected to the cover member 100, it is possible to prevent the patient from experiencing pain or other discomfort. Furthermore, because the connecting parts 236 and 237 of the hemostatic device 10 have the curved shape described above, it is possible to prevent the connecting parts 236 and 237 from digging into the skin when the patient makes an action such as placing their right hand H1 on a table or the like while the fixing member 230 is fixed to the cover member 100.

[0149] The cover member 100 comprises a main body portion 110 on which the expansion member 150 is located, a first band portion 410 that extends in a first direction from the main body portion 110 and is positioned between the patient's fingers, a second band portion 420 that extends in a second direction different from the first direction from the main body portion 110, and a third band portion 430 that faces the second band portion 420 with the expansion member 150 in between and extends in a direction different from the first band portion 410 and the second band portion 420 from the main body portion 110. The claw portions 233 and 234 are configured to allow insertion of any of the main body portion 110, the first band portion 410, the second band portion 420, and the third band portion 430 of the cover member 100 between them and the connecting portions 236 and 237.

[0150] With the hemostatic device 10 configured as described above, the fixing member 230 can be fixed to any position on the cover member 100 of the hemostatic device 10, which is configured to be attached to the right hand H1. Therefore, the convenience of the hemostatic device 10 is improved.

[0151] Next, a modified version of the first embodiment described above will be explained. In the explanation of the modified version, explanations of the components and procedures for using hemostatic devices, etc., that have already been explained in the first embodiment will be omitted as appropriate. In addition, any content that is not specifically explained in the modified version may be the same as that of the first embodiment.

[0152] <Example 1> Figure 28 is a side view of the fixing member 230A according to the modified example 1. Figure 29 is a cross-sectional view along the arrows 29A-29A shown in Figure 28.

[0153] As shown in Figures 28 and 29, the fixing member 230A is equipped with a claw portion 233A.

[0154] The claw portion 233A includes a flat portion 233b configured to maintain a flat shape for a part of the cover member 100 when the cover member 100 is inserted between the main body portion 231 and the claw portion 233A. In this modified example, as shown in Figure 29, the flat portion 233b of the claw portion 233A extends parallel to the extending direction of the main body portion 231. Also, in the side view shown in Figure 28, the flat portion 233b extends in a straight line. The flat portion 233b faces the main body portion 231 across the gap g2 formed between the main body portion 231 and the claw portion 233A.

[0155] The fixing member 230A is equipped with one claw portion 233A. The claw portion 233A is connected to the main body portion 231 via a connecting portion 236A.

[0156] As shown in Figure 29, the claw portion 233A has a rectangular shape in a front view. The flat portion 233b forms the upper surface of the claw portion 233A located on the main body portion 231 side. In addition, as shown in the cross-sectional view of Figure 29, the flat portion 233b of the modified example 1 forms a plane that extends linearly in the width direction of the claw portion 233A. Therefore, when the cover member 100 is inserted between the main body portion 231 and the claw portion 233A, the claw portion 233A can maintain a relatively wide flat shape over a portion of the cover member 100. The claw portion 233A extends substantially linearly toward the tip 233a. The connecting portion 236A can be configured, for example, to extend substantially linearly between the main body portion 231 and the claw portion 233A.

[0157] As shown in Figure 29, the width w3' of the claw portion 233A is smaller than the width w4' of the main body portion 231 at the point where the claw portion 233A and the main body portion 231 overlap in a front view. The same relationship in width in the front view is also observed in the plan view of the fixing member 230A.

[0158] The claw portion 233A of the fixing member 230A according to Modified Example 1 includes a linear flat portion 233b that faces the main body portion 231, with a gap g2 formed between the main body portion 231 and the claw portion 233A. The claw portion 233A of the fixing member 230A has a simple structure that extends in a straight line. When the surgeon connects the fixing member 230A to the cover member 100, the surgeon can easily insert and remove the cover member 100 into the gap g2 along the flat portion 233b. Therefore, the surgeon can easily fix the fixing member 230A to the cover member 100.

[0159] <Modification 2> Figure 30 is a side view of the fixing member 230B according to the modified example 2.

[0160] The fixing member 230B according to modified example 2 has a first protrusion 238a formed on the main body portion 231 and a second protrusion 238b formed on the claw portion 233A. The first protrusion 238a protrudes from the main body portion 231 toward the gap g2. The second protrusion 238b protrudes from the claw portion 233A toward the gap g2.

[0161] The first protrusion 238a can be positioned, for example, closer to the base end of the fixing member 230B than the second protrusion 238b. The second protrusion 238b can be positioned at the tip 233a of the claw portion 233A.

[0162] In the modified example 2, the fixing member 230B has its respective protrusions 238a and 238b in contact with the cover member 100 when the cover member 100 is inserted into the gap g2. As a result, the cover member 100 is less likely to come out of the gap g2.

[0163] There are no particular restrictions on the number, position, cross-sectional shape, etc., of the protrusions placed on the fixing member 230B. It is also possible to place the protrusions on the fixing member 230 which has the claw portions 233 and 234 of the structure shown in the first embodiment. Furthermore, the protrusions can be placed only on the main body portion 231 or only on the claw portions.

[0164] <Variation 3> Figure 31 is a side view of the fixing member 230C according to the modified example 3.

[0165] The main body 231 of the fixing member 230C according to Modification 3 is provided with a plurality of protrusions 239. The plurality of protrusions 239 function as an anti-slip feature when the surgeon grasps the main body 231 with their fingers. Therefore, the surgeon can perform the task of fixing the fixing member 230C to the cover member 100 more smoothly. The main body 231 of the fixing member 230C may be made of a material that is less slippery. The fixing member 230C can exhibit the same effects as described above even when configured in this way.

[0166] <Fourth variation> As shown in Figures 32 and 33, the fixing member 230 can also be applied to a hemostatic device 10A that is configured to be attached to a patient's arm, for example.

[0167] The hemostatic device 10A comprises a band-shaped cover member 810 configured to be fixed in place when wrapped around the patient's arm, and an expansion member 820 positioned on the cover member 810. A tube member 220 is connected to the expansion member 820. The tube member 220 is connected to the main body 231 of the fixing member 230. When performing hemostasis using the hemostatic device 10A, for example, as shown in Figures 32 and 33, the fixing member 230 can be fixed to a predetermined position on the cover member 810 by inserting the cover member 810 into the gap g2 (see Figures 17 and 18).

[0168] Furthermore, the hemostatic devices of the modified examples 1 to 4 described above are provided with an inclined portion 232 on the main body of the fixing member, similar to the hemostatic device 10 according to the embodiment described above (see Figures 28, 30, 31, and 32). The inclined portion 232 in each modified example is inclined toward the claw portion. In addition, at least a portion of the inclined portion 232 is configured to be located on the main body at a position closer to the base end than the tip of the claw portion.

[0169] <Second Embodiment> Next, a fixing member according to the second embodiment of the present invention will be described. In the description of the second embodiment, explanations of the members and procedures for using the hemostatic device, etc., which have already been described in the first embodiment, will be omitted as appropriate. In addition, any content not specifically described in the second embodiment may be the same as that of the first embodiment.

[0170] Figures 34, 35, and 36 show the fixing member 700 according to the second embodiment.

[0171] The fixing member 700 according to the second embodiment is configured to be detachably attached to the tube member 220.

[0172] As shown in Figure 36, the hemostatic device according to the second embodiment comprises a cover member 100 configured to cover the first puncture site p1, an expansion member 150 connected to the cover member 100 and configured to compress the first puncture site p1, an injection member 900 connected to the expansion member 150 and configured to inject fluid into the expansion member 150, and a fixing member 700 configured to fix the injection member 900 to the cover member 100.

[0173] The injection member 900 has a connector portion 901 and a tube member 903 that connects the connector portion 901 and the expansion member 150.

[0174] A buffer member 902 having an expandable space is placed between the tube member 903 and the connector portion 901. The buffer member 902 is made of a flexible, bag-shaped member with a space formed inside. An arrow-shaped marker indicating the direction of syringe insertion into the connector portion 901 may be provided on the buffer member 902. When air is injected into the lumen 150a of the expansion member 150, the expansion member 150 expands. When the expansion member 150 expands, the buffer member 902, which communicates with the lumen 150a of the expansion member 150 via the tube member 903, also expands. The operator can visually confirm the expansion of the buffer member 902 and understand that the expansion member 150 has expanded without air leakage.

[0175] As shown in Figures 34 and 35, the fixing member 700 has a main body portion 710 in which a groove portion 711 capable of fixing the tube member 903 is formed, a first claw portion 720 extending from the main body portion 710, and a second claw portion 730 extending parallel to the first claw portion 720 and forming a gap g3 between the first claw portion 720 into which the cover member 100 can be inserted.

[0176] The fixing member 700 can connect the tube member 903 to the main body 710 by pushing the tube member 903 into the groove 711 along the direction indicated by arrow D in Figure 34.

[0177] The fixing member 700 can be fixed to the cover member 100 by inserting the cover member 100 into the gap g3 between the first claw portion 720 and the second claw portion 730.

[0178] The first claw portion 720 has a base portion 721 connected to the main body portion 710 and a tapered portion 724 extending toward the tip of the base portion 721. The tapered portion 724 is configured such that its thickness gradually decreases toward the tip of the first claw portion 720.

[0179] The second claw portion 730 has a base portion 731 connected to the main body portion 710 and a tapered portion 734 extending toward the tip of the base portion 731. The tapered portion 734 is configured such that its thickness gradually decreases toward the tip of the second claw portion 730. The tip of the tapered portion 734 of the second claw portion 730 is positioned further away from the main body portion 710 than the tip of the tapered portion 724 of the first claw portion 720. In other words, the second claw portion 730 is longer in the extending direction than the first claw portion 720.

[0180] When inserting the cover member 100 into the gap g3, the fixing member 700 is guided into the gap g3 along the tapered portion 734 of the second claw portion 730. Therefore, the surgeon can smoothly insert the cover member 100 into the gap g3.

[0181] The fixing member 700 is connected to the hemostatic device via the tube member 903 by fitting the tube member 903 into the groove 711. Therefore, when the tube member 903 is not fitted into the groove 711, the fixing member 230 is separated from the hemostatic device. The fixing member 700 can be packaged together with the hemostatic device in a separate state before use (during transport or storage). The surgeon can connect the tube member 903 to the fixing member 700 when starting hemostasis using the hemostatic device. As shown in Figure 36, the surgeon can fix the fixing member 700 connected to the tube member 903 to any position on the cover member 100.

[0182] By fixing the fixing member 700 to the cover member 100, the surgeon can prevent the tube member 903 from moving in accordance with the movement of the patient's right hand H1 while the hemostatic device is attached to the patient's right hand H1. Furthermore, when connecting the fixing member 700 to the cover member 100, the fixing member 700 can be fixed to the cover member 100 by bringing the fixing member 700 closer to the cover member 100 in a direction substantially parallel to the surface direction of the cover member 100. Therefore, when fixing the fixing member 700 to the cover member 100, it is possible to prevent a force from being applied to the hemostatic device 10 in a direction that presses the expansion member 150 against the surface of the patient's right hand H1.

[0183] Although the hemostatic device according to the present invention has been described above through several embodiments and modifications, the present invention is not limited to what has been described in the specification and can be modified as appropriate based on the claims.

[0184] The shape and dimensions of each part of the hemostatic device are not particularly limited and can be changed as appropriate, as long as they can compress and stop bleeding at the puncture site with the expansion member placed at the puncture site.

[0185] The specific shapes (planar and cross-sectional shapes) of the expansion members and support members are not limited to those shown in the embodiments.

[0186] For example, the fixing member may be made of a flexible material in part or in whole to reduce the burden on the patient's body when the hemostatic device is attached, or to ensure a comfortable feel against the skin when attached. The fixing member may also be configured to include a clip structure that allows the distance between the claw portion and the main body portion to be varied by utilizing the elastic force of an elastic material. When the fixing member is configured to have the above-described clip structure, the fixing member and the cover member can be easily fixed and released by opening and closing the clip.

[0187] This application is based on Japanese Patent Application No. 2022-44655, filed on 18 March 2022, the disclosures of which are cited in their entirety by reference. [Explanation of symbols]

[0188] 10 Hemostatic devices 10A Hemostatic device 100 Cover component 110 Main body 120 Sheet Material 150 Expansion Member 150a Luminus of the expansion member 200 Injection Member 210 Connector section Port 211 213 Valve section 220 Tube Member 230 Fixing member 231 Main body of the fixing member 232 Slope 233 First claw portion (claw portion) 233a Tip of the first claw 234 Second claw portion (claw portion) 234a Tip of the second claw 236 Connecting part 237 Connecting part 230A Fixing Member 233A Claw part 233b Flat area 230B Fixing member 238a First protrusion (protrusion) 238b Second convex part (convex part) 230C Fixed member 239 Protrusion 300 Support Member 410 First Belt Section 420 Second Belt Section 430 Third Belt Section 600 Introducers 700 Fixing member 710 Main body of the fixing member 711 Groove 720 1st claw part 730 2nd claw part 900 Injection Member 901 Connector section 902 Cushioning material 903 Tube component g2 Gap between the main body and the claw G3 gap between the main body and the claw w3 width of the claw w4 Width of the main body of the fixing member H hand H1 right hand Ar forearm fb between fingers Sb Snuffbox B1 Metacarpal bone of the index finger B2 Metacarpal bone of the thumb T1 extensor pollicis longus tendon T2 extensor pollicis brevis tendon V1 blood vessel (distal radial artery) Arteries located in the V2 snuffbox. p1 1st puncture site (puncture site) p2 2nd puncture site (puncture site)

Claims

1. A cover member configured to cover the puncture site formed on the patient, An expansion member connected to the cover member and configured to compress the puncture site, An injection member connected to the expansion member and configured to be able to inject fluid into the expansion member, The injection member comprises a fixing member configured to be fixed to the cover member, The injection member has a connector portion and a tube member connected to the expansion member, The fixing member has a main body that connects the connector portion and the tube member, a claw portion that extends parallel to the main body portion toward the expansion member side, and a connecting portion that is configured to allow the cover member to be inserted between the main body portion and the claw portion and connects the main body portion and the claw portion. A hemostatic device wherein the width of the claw portion is smaller than the width of the main body portion at the point where the claw portion and the main body portion overlap in a plan view.

2. The main body portion has an inclined portion that slopes toward the claw portion, The hemostatic device according to claim 1, wherein the inclined portion extends from a position closer to the tip of the claw portion to a position closer to the base of the claw portion.

3. The hemostatic device according to claim 1 or claim 2, wherein the main body has a circular or elliptical cross-sectional shape.

4. The claw portion has a flat portion configured to maintain a flat shape for a part of the cover member when the cover member is inserted between the main body portion and the claw portion. The hemostatic device according to claim 1 or claim 2, wherein the flat portion faces the main body portion across a gap formed between the main body portion and the claw portion.

5. The hemostatic device according to claim 1 or claim 2, wherein the connecting portion is curved toward the tip of the claw portion from the main body portion.

6. The hemostatic device according to claim 1 or claim 2, wherein the main body and / or the claw portion has a protrusion that projects toward the gap formed between the main body and the claw portion.

7. The cover member comprises a main body portion on which the expansion member is located, a first band portion configured to be positioned between the fingers of the patient and extending in a first direction from the main body portion of the cover member, a second band portion extending in a second direction different from the first direction from the main body portion of the cover member, and a third band portion facing the second band portion with the expansion member in between, and extending in a direction different from the first band portion and the second band portion from the main body portion of the cover member. The hemostatic device according to claim 1 or claim 2, wherein the claw portion is configured such that any of the main body portion, the first band portion, the second band portion, and the third band portion of the cover member are inserted between it and the connecting portion.

8. A cover member configured to cover the puncture site formed on the patient, An expansion member connected to the cover member and configured to compress the puncture site, An injection member connected to the expansion member and configured to be able to inject fluid into the expansion member, The injection member comprises a fixing member configured to be fixed to the cover member, The injection member has a connector portion and a tube member that connects the connector portion and the expansion member. The fixing member is a hemostatic device having a main body portion having a groove portion formed therein that can fix the tube member, a first claw portion extending from the main body portion, and a second claw portion extending parallel to the first claw portion and forming a gap between itself and the first claw portion into which the cover member can be inserted.

9. A cover member configured to cover the puncture site formed on the patient, An expansion member connected to the cover member and configured to compress the puncture site, An injection member connected to the expansion member and configured to be able to inject fluid into the expansion member, The injection member comprises a fixing member configured to be fixed to the cover member, The injection member has a connector portion and a tube member connected to the expansion member, The fixing member has a main body that connects the connector portion and the tube member, a claw portion that extends parallel to the main body portion toward the expansion member side, and a connecting portion that is configured to allow the cover member to be inserted between the main body portion and the claw portion and connects the main body portion and the claw portion. The main body portion has an inclined portion that slopes toward the claw portion, A hemostatic device wherein at least a portion of the inclined portion is configured to be located on the main body portion at a position closer to the proximal end than the tip of the claw portion.

10. The claw portion has a flat portion configured to maintain a flat shape for a part of the cover member when the cover member is inserted between the main body portion and the claw portion. The hemostatic device according to claim 9, wherein the flat portion faces the main body portion across a gap formed between the main body portion and the claw portion.

11. The hemostatic device according to claim 9 or claim 10, wherein the width of the claw portion is smaller than the width of the main body portion at the point where the claw portion and the main body portion overlap in a plan view.

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