hemostatic instruments

Abstract

[Problem] To provide a hemostatic instrument which can prevent the movement of a hand of a patient from being restrained in a state where a pressing member is disposed on a puncture site formed in the hand of the patient, and which can be simply worn on the hand of the patient. [Solution] This hemostatic instrument 100 comprises: a pressing member 110 configured to compress a first puncture site p1 of a patient; a first band body 150 configured to be connectable to the pressing member; a second band body 160 configured to be connectable to the pressing member; and a third band body 170 configured to be connectable to the pressing member, wherein the first band body has a first one end 151 connected to the pressing member and having a first rotation axis 151a, and a free first other end 153, the second band body has a second one end 161a connected to the pressing member and having a second rotation axis 161a, and a free second other end 163, and the first band body and the second band body are configured to be able to rotate about the first rotation axis and the second rotation axis so as to approach or separate from the third band body.

Description

[Technical Field]

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

[0002] One known catheterization technique involves puncturing a blood vessel in a patient's arm or hand, forming a puncture site, and introducing various types of elongated medical objects into the blood vessel to perform treatment or therapy on the lesion site. For example, Patent Document 1 discloses a hemostatic device that stops bleeding at a puncture site formed to enable access to a blood vessel (including the distal radial artery) running through the hand.

[0003] The hemostatic device of Patent Document 1 includes a pressing member with a balloon that applies pressure to a puncture site formed on a patient's hand, and multiple bands for fixing the pressing member to the patient's hand. The multiple bands also include a wrapping band that is placed so as to wrap around the outer periphery of the hand, and a finger loop band that is placed in the interdigital region between adjacent fingers of the hand. [Prior art documents] [Patent documents]

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

[0005] When a surgeon such as a doctor (hereinafter referred to as "the surgeon") uses the hemostatic device of Patent Document 1 to stop bleeding at a puncture site formed on a patient's hand, the surgeon wraps the wrapping band around the outer periphery of the hand and also places the finger loop band in the interdigital space between the thumb and index finger. By using the bands to fix the hemostatic device with the pressing members positioned at the puncture site formed on the patient's hand and its surrounding area, the surgeon can prevent the pressing members from shifting from the puncture site formed on the patient's hand.

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

[0007] Because the positions of blood vessels running through the hand vary from patient to patient and because there are differences in physical size from patient to patient, the surgeon may create a puncture site at a different position on the patient's hand for each procedure. For example, the surgeon may create a puncture site in the anatomical snuff box located on the back of the hand, or in a position more distal to the snuff box (closer to the fingertips than the snuff box).

[0008] The hemostatic device of Patent Document 1 is not intended to be used simultaneously for puncture sites formed in different positions on the hand. Therefore, the connection position where the wrapping band and the pressing member are connected is fixed. Therefore, the hemostatic device of Patent Document 1 has limited flexibility in the position where the wrapping band is attached to the hand.

[0009] When the hemostatic device of Patent Document 1 is used to stop bleeding at puncture sites formed in different positions on the hand, when stopping bleeding at one puncture site (e.g., a puncture site formed in a snuff box), it is considered possible to position the wrapping band at an appropriate position on the patient's hand so as not to interfere with the patient's finger movements, etc. On the other hand, when the hemostatic device of Patent Document 1 is used to stop bleeding at another puncture site (e.g., a puncture site formed in a position more distal to the snuff box), the wrapping band ends up being wrapped at a position where it is not originally intended to be worn (e.g., a position closer to the distal side of the hand than the snuff box). If the wrapping band is wrapped at a position closer to the distal side of the hand than the snuff box, the wrapping band restricts hand movement. If the patient moves their hand, such as spreading their hand, while wearing the wrapping band as described above, the wrapping band will slip off the hand. If the wrapping band slips off the hand, the pressing member connected to the wrapping band will slip off the puncture site formed on the hand. Therefore, the hemostatic device of Patent Document 1 has difficulty in appropriately and stably stopping bleeding at a puncture site formed on the hand.

[0010] In view of the above problems, the present invention aims to provide a hemostatic device that can prevent the movement of the patient's hand from being restricted when a pressing member is placed at a puncture site formed on the patient's hand, and that can be easily attached to the patient's hand. [Means for solving the problem]

[0011] A hemostatic device according to the present invention comprises a pressing member configured to pressurize a puncture site of a patient, a first band configured to be connectable to the pressing member, a second band configured to be connectable to the pressing member, and a third band configured to be connectable to the pressing member, wherein the first band is connected to the pressing member and has a first end portion having a first rotation axis and a first other free end portion, the second band is connected to the pressing member and has a second end portion having a second rotation axis and a second other free end portion, and the first band and the second band are configured to be rotatable about the first rotation axis and the second rotation axis so as to move toward or away from the third band. The pressing member has a support member and a convex portion provided on one surface of the support member and protruding in a direction away from the support member, and the first end portion of the first band and the second end portion of the second band are each connected to the convex portion in a state in which they can rotate relative to the pressing member, and the convex portion has a concave portion recessed toward the support member, and the concave portion is formed to be transparent. [Effects of the Invention]

[0012] In the hemostatic device of the present invention, the first band can rotate relative to the pressing member about a first rotation axis, and the second band can rotate relative to the pressing member about a second rotation axis. Therefore, the positions of the first and second bands can be adjusted by rotating the first and second bands relative to the pressing member while placing the pressing member at a puncture site formed on a patient's hand. This allows the first and second bands to be placed on the patient's hand so that the movement of the patient's hand is not restricted, and the hemostatic device can be easily worn on the patient's hand. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 2 is a diagram showing a hemostatic device according to an embodiment, and is a plan view of each band viewed from the outer surface side. [Figure 2]FIG. 2 is a plan view showing the hemostatic device according to the embodiment, as viewed from the inner surface side of each band. [Figure 3] FIG. 10 is an enlarged plan view of a portion of the hemostatic device as viewed from the outer surface side of each band. [Figure 4] FIG. 10 is an enlarged plan view of a portion of the hemostatic device as viewed from the inner surface side of each band. [Figure 5] FIG. 10 is an enlarged plan view of a portion of the hemostatic device as viewed from the inner surface side of each band. [Figure 6] 6A is a cross-sectional view of the hemostatic device taken along arrows 6A-6A in FIG. 5, showing the state when the expansion member is expanded. FIG. [Figure 7] FIG. 10 is a plan view of the hemostatic device as viewed from the outer surface side of each band, showing the state in which the first band, second band, and third band have been separated from the pressing member. [Figure 8] FIG. 10 is a plan view of the hemostatic device as viewed from the outer surface side of each band, showing the first band, second band, and third band connected to the pressing member before and after rotation. [Figure 9] FIG. 1 shows a patient's hand (right hand) on which the hemostatic device is to be used. [Figure 10] FIG. 1 is a diagram showing a first example of use of a hemostatic device in a simplified manner. [Figure 11] FIG. 1 is a diagram showing a first example of use of a hemostatic device in a simplified manner. [Figure 12] FIG. 1 is a diagram showing a first example of use of a hemostatic device in a simplified manner. [Figure 13] FIG. 1 is a diagram showing a first example of use of a hemostatic device in a simplified manner. [Figure 14] FIG. 14 is a partial cross-sectional view taken along arrows 14A-14A shown in FIG. [Figure 15] FIG. 10 is a diagram showing a second example of use of the hemostatic device in a simplified manner. [Figure 16] FIG. 1 shows a patient's hand (left hand) on which the hemostatic device is to be used. [Figure 17] FIG. 10 is a diagram showing a third example of use of the hemostatic device in a simplified manner. [Figure 18] FIG. 10 is a diagram illustrating a fourth example of use of the hemostatic device. [Figure 19]FIG. 10 is an enlarged plan view showing a part of a hemostatic device according to Modification 1 that is provided with a restricting portion. [Figure 20] FIG. 10 is a plan view of a hemostatic device according to Modification 2 that includes an auxiliary rotation shaft. [Figure 21] 21A is a side view of the pressing member as seen from the direction of arrow 21A shown in FIG. 20. FIG. [Figure 22] FIG. 1 shows a patient's hand (right hand) on which the hemostatic device is to be used. [Figure 23] 10A and 10B are diagrams illustrating an example of use of a hemostatic device according to Modification 2. [Figure 24] 10A and 10B are diagrams illustrating an example of use of a hemostatic device according to Modification 2. [Figure 25] FIG. 10 is an enlarged plan view showing a portion of a hemostatic device according to Modification 3 that includes a restricting portion. [Figure 26] FIG. 10 is an enlarged plan view showing a portion of a hemostatic device according to a fourth modification regarding the band structure. [Figure 27] FIG. 27A is a partial cross-sectional view taken along arrows 27A-27A shown in FIG. 26. [Figure 28] FIG. 10 is a cross-sectional view of a hemostatic device according to a fifth modified example regarding the structure of the expansion member.

[0014] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following description does not limit the technical scope or meaning of terms described in the claims. Furthermore, the dimensional proportions in the drawings are exaggerated for the convenience of explanation and may differ from the actual proportions.

[0015] 1 to 8 are diagrams illustrating a hemostatic device 100 according to this embodiment. FIGS. 9 to 18 are diagrams illustrating an example of how the hemostatic device 100 is used.

[0016] As shown in Figures 9, 13, and 14, the hemostatic device 100 can be used to stop bleeding at a puncture site p1 (e.g., puncture sites p1, p2, p3, and p4 described below) formed in a patient's hand H located closer to the fingers (fingertip side) than the forearm A when removing a sheath tube of an introducer 200 that has been placed at the puncture site p1.

[0017] The specific location of the puncture site to be stopped by hemostatic device 100 is not particularly limited, but in this embodiment, the following first puncture site p1, second puncture site p2, third puncture site p3, and fourth puncture site p4 are exemplified. Note that in this specification, the details of hemostatic device 100 will be described mainly through an example in which hemostatic device 100 is used to stop bleeding at first puncture site p1.

[0018] 9 and 13, the first puncture site p1 is a puncture site formed in artery B (hereinafter also referred to as "blood vessel B") located in the snuff box of the palmar artery running on the Hb side of the back of the patient's right hand H1 (hand H), located distal to the patient's forearm A. The snuff box is a cavity in the hand located near the radius when the patient spreads the thumb of hand H.

[0019] The second puncture site p2 is a puncture site formed in the distal radial artery located distal to the snuffbox of the palmar artery running on the back Hb side of the patient's right hand H1, as shown in Figures 9 and 15. The second puncture site p2 is located distal to the first puncture site p1 on the right hand H1, based on the extensor pollicis longus tendon t1 located on the back Hb of the patient's right hand H1.

[0020] As shown in Figures 16 and 17, the third puncture site p3 is a puncture site formed in the artery located at the snuffbox of the palmar artery running on the back Hb side of the patient's left hand H2 (hand H).

[0021] 16 and 18, the fourth puncture site p4 is a puncture site formed in the distal radial artery located distal to the snuffbox of the palmar artery running on the back Hb side of the patient's left hand H2. The fourth puncture site p4 is located distal to the third puncture site p3 on the left hand H2, based on the extensor pollicis longus tendon t2 located on the back Hb of the patient's left hand H2.

[0022] The hemostatic device 100 will now be described in detail.

[0023] 1, 2, 13, and 14, the hemostatic device 100 comprises a pressing member 110 configured to apply pressure to a first puncture site p1 formed on the patient's right hand H1, a first band 150 configured to be connectable to the pressing member 110, a second band 160 configured to be connectable to the pressing member 110, and a third band 170 configured to be connectable to the pressing member 110.

[0024] As shown in Figures 6, 7, and 8, the first band 150 is connected to the pressing member 110 and has a first end 151 having a first rotation axis 151a and a free first other end 153. Note that Figure 6 shows a partial cross-sectional view of the bands 150, 160, and 170 connected to the pressing member 110 (a view obtained by inverting the partial cross-sectional view taken along arrows 6A-6A in Figure 5). Figure 7 shows a plan view of the bands 150, 160, and 170 separated from the pressing member 110. Figure 8 shows a plan view of the bands 150, 160, and 170 connected to the pressing member 110.

[0025] In this specification, "free other end" means that when the hemostatic device 100 is not attached (when the hemostatic device 100 is not attached to the patient's hand H), there is no direct or indirect connection to any other component.

[0026] As shown in Figures 6 and 8, when first band 150 is connected to pressing member 110, it is configured to be rotatable around first rotation axis 151a so as to move towards or away from third band 170.

[0027] As shown in Figures 6, 7, and 8, the second band 160 is connected to the pressing member 110 and has a second end portion 161 having a second rotation axis 161a, and a second other end portion 163 that is free.

[0028] As shown in Figures 6 and 8, when the second band 160 is connected to the pressing member 110, it is configured to be rotatable around the second rotation axis 161a so as to move towards or away from the third band 170.

[0029] As shown in Figures 6, 7, and 8, the third band 170 is connected to the pressing member 110 and has a third end portion 171 having a third rotation axis 171a, and a third other end portion 173 that is free.

[0030] As shown in FIGS. 6 and 8, the third band 170 is configured to be rotatable about a third rotation axis 171a so as to move toward or away from each of the first band 150 and the second band 160.

[0031] In this embodiment, the bands 150, 160, and 170 are configured to be rotatable around the respective rotation axes 151a, 161a, and 171a. However, it is sufficient that at least the first band 150 and the second band 160 of the hemostatic device 100 are configured to be rotatable around the respective rotation axes 151a and 161a. Therefore, the third band 170 does not need to be equipped with the third rotation axis 171a. In other words, the third band 170 may be connected to the pressing member 110 in a fixed position.

[0032] As shown in Figures 11, 12, and 13, when the hemostatic device 100 is worn on a patient's right hand H1, the first band 150 and the second band 160 can be arranged to wrap around the outer circumference of the right hand H1.

[0033] As shown in FIG. 13, when the hemostatic device 100 is worn on the patient's right hand H1, the third band 170 can be positioned so that it is hooked onto the interdigital area fb located between two fingers (e.g., the thumb and index finger).

[0034] The bands 150, 160, and 170 can be fixed to one another via fixing members 181, 182, 183, 184, and 185, which will be described later.

[0035] As shown in FIG. 6, the pressing member 110 has a support member 120 and a protrusion 130 that is provided on one surface (outer surface) 120a of the support member 120 and protrudes in a direction away from the support member 120.

[0036] The above-mentioned "direction moving away from the support member 120" refers to the direction moving away from the patient's hand H (upward in FIG. 14) when the hemostatic device 100 is attached to the patient's right hand H1, as shown in FIG.

[0037] As shown in Figures 6, 7, and 8, each of the first end 151 of the first band 150, the second end 161 of the second band 160, and the third end 171 of the third band 170 can be connected to the protrusion 130 in a rotatable state relative to the pressing member 110.

[0038] 6 and 7, the protrusion 130 has a cylindrical shape. However, the shape of the protrusion 130 is not particularly limited as long as it can rotatably connect the first band 150 and the second band 160.

[0039] As shown in Fig. 6, the protrusion 130 has a recess 131 recessed toward the support member 120. The recess 131 extends along the height direction of the protrusion 130 so as to form a space inside the protrusion 130. At least a portion of the recess 131 (for example, the region forming the bottom of the protrusion 130) can be configured to be transparent. Note that "transparent" in this specification includes colored transparent, colorless transparent, and translucent.

[0040] 6 and 14, the support member 120 has a curved region 123 that is curved in a convex shape toward the direction in which the convex portion 130 protrudes (upward in FIGS. 6 and 14). Specifically, the support member 120 is curved in a convex shape from the end sides located on both the left and right sides toward the center in the cross section shown in FIGS.

[0041] As shown in FIG. 14, when the hemostatic device 100 is worn on the patient's right hand H1, the curved region 123 of the support member 120 can be positioned so as to follow part of the outer circumference of the right hand H1.

[0042] As shown in FIGS. 6 and 14, the support member 120 has an extension member 140 disposed on one surface 120a of the support member 120 and on another surface (inner surface) 120b located opposite to the other surface 120a.

[0043] The expansion member 140 can be configured, for example, by a resin balloon having a lumen 143 into which a fluid such as air can flow. A tube 193, which will be described later, is connected to the lumen 143 of the expansion member 140.

[0044] 6 and 14 show cross-sectional views of the expanded state of the expansion member 140. There are no particular limitations on the shape of the expansion member 140 before and after expansion, the constituent material of the expansion member 140, the structure of the expansion member 140, etc.

[0045] Furthermore, the pressing member 110 may be provided with a member other than the balloon-shaped expansion member 140 as a member for applying a compressive force to the first puncture site p1. Examples of members other than the balloon-shaped expansion member 140 include a member made of a resin material such as plastic or gel, a member containing gel whose water content decreases over time to gradually reduce the compressive force, an elastic material such as a sponge-like substance, an aggregate of fibers such as cotton, metal, a member having a predetermined three-dimensional shape (such as a sphere, ellipsoid, or triangular pyramid), and an appropriate combination of these.

[0046] 4 and 5, the protrusions 130 are arranged at positions that overlap at least a portion of the expansion member 140 in the planar direction of the support member 120. In other words, the protrusions 130 are arranged so that at least a portion of the protrusions 130 overlaps with the expansion member 140 in the planar view shown in FIGS.

[0047] In this embodiment, in the plan view shown in FIGS. 4 and 5, the expansion member 140 and the protrusion 130 have a circular outer shape.

[0048] 4 and 5, the expansion member 140 has a larger outer shape than the convex portion 130. The outer shape of the expansion member 140 may be smaller than the outer shape of the convex portion 130.

[0049] In addition, in the plan view shown in FIGS. 4 and 5, the center position in the planar direction of the protrusion 130 and the center position in the planar direction of the extension member 140 are arranged at approximately the same position.

[0050] 6, the expansion member 140 is connected to the other surface 120b of the support member 120. The expansion member 140 can be fixed to the support member 120 by, for example, adhesion or fusion. The expansion member 140 may also be connected to the support member 120 via, for example, another member (for example, a resin plate) or the like.

[0051] As shown in FIGS. 4, 5, 6, and 14, the expansion member 140 is provided with a marker 145 for aligning the pressing member 110 with the first puncture site p1.

[0052] The marker 145 is placed on the surface of the expansion member 140 opposite to the surface on which the support member 120 is placed (the surface that is placed on the body surface of the patient's hand H when the hemostatic device 100 is attached to the patient's hand H).

[0053] The marker 145 is disposed at approximately the center position in the surface direction of the expansion member 140. The marker 145 is also disposed so as to overlap with the approximately center position in the surface direction of the protrusion 130 of the pressing member 110.

[0054] The marker 145 can be formed, for example, by a rectangular marker that is entirely colored. The specific shape, color, formation method, and position of the marker 145 on the extension member 140 are not particularly limited. For example, the marker 145 may be composed of a transparent center portion and a colored linear frame portion surrounding the center portion. Furthermore, for example, the marker 145 may be provided on the support member 120.

[0055] 6, the support member 120 and the protrusion 130 are integrally formed from the same resin material. However, the pressing member 110 may have a structure in which the support member 120 and the protrusion 130 are connected together and made of different materials.

[0056] The support member 120 and the protrusions 130 are preferably made of a material having a predetermined hardness. For example, the support member 120 and the protrusions 130 are made of a material harder than the expansion member 140. If the support member 120 and the protrusions 130 are configured to have a predetermined hardness, when the expansion member 140 applies a compressive force to the first puncture site p1 formed on the patient's right hand H1 as shown in FIG. 6, the support member 120 can press the expansion member 140 against the patient's right hand H1. This prevents the pressing member 110 from lifting up from the patient's right hand H1.

[0057] Examples of materials that can be used to form the support member 120 and the protrusions 130 having the above-described hardness include acrylic resin, polyvinyl chloride (particularly hard 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.

[0058] It is preferable that the support member 120, the convex portion 130, and the expansion member 140 are formed so that the portions that overlap with each other in the plan view shown in Figures 4 and 5 are transparent. When the support member 120, the convex portion 130, and the expansion member 140 are configured in this manner, as shown in Figures 12 and 13, when attaching the hemostatic device 100 to the patient's right hand H1, the surgeon can visually confirm the position of the marker 145 and / or the first puncture site p1 more easily via the support member 120, the convex portion 130, and the expansion member 140.

[0059] As shown in Figures 7 and 8, the first band 150 has a first main body portion (corresponding to the "main body portion") 155, a first hard portion (corresponding to the "hard portion") 156 made of a material harder than the first main body portion 155, and a first hole portion (corresponding to the "hole portion") 157 configured to allow the protrusion 130 to be inserted.

[0060] The first main body portion 155 extends along the longitudinal direction of the first band 150. The first rigid portion 156 and the first hole portion 157 are formed in the first end portion 151. The first hole portion 157 is formed in a substantially circular shape.

[0061] The first rotation shaft 151a is disposed substantially in the center of the first hole 157. The first hole 157 is formed to be larger than the protrusion 130 in the plan view shown in FIGS.

[0062] 6 , in the hemostatic device 100, the first band 150 is connected to the pressing member 110 by inserting the convex portion 130 through the first hole 157 of the first band 150. With the first end portion 151 connected to the pressing member 110 via the convex portion 130 and the first hole 157, the first band 150 becomes rotatable along the outer periphery of the convex portion 130.

[0063] First band 150 has first rigid portion 156 formed in a position surrounding first hole 157. Therefore, when first band 150 rotates around first rotation axis 151a, first rigid portion 156 suppresses deformation of first hole 157. This allows first band 150 to rotate smoothly along the outer periphery of protrusion 130 with protrusion 130 inserted through first hole 157.

[0064] As shown in Figures 7 and 8, the second band 160 has a second main body portion (corresponding to the "main body portion") 165, a second hard portion (corresponding to the "hard portion") 166 made of a material harder than the second main body portion 165, and a second hole portion (corresponding to the "hole portion") 167 configured to allow the protrusion 130 to be inserted.

[0065] The second main body portion 165 extends along the longitudinal direction of the second band 160. The second rigid portion 166 and the second hole portion 167 are formed in the second end portion 161. The second hole portion 167 is formed in a substantially circular shape.

[0066] The second rotation shaft 161a is disposed substantially in the center of the second hole 167. The second hole 167 is formed to be larger than the protrusion 130 in the plan view shown in FIGS.

[0067] 6 , in the hemostatic device 100, the second band 160 is connected to the pressing member 110 by inserting the convex portion 130 through the second hole 167 of the second band 160. With the second end portion 161 connected to the pressing member 110 via the convex portion 130 and the second hole 167, the second band 160 becomes rotatable along the outer periphery of the convex portion 130.

[0068] The second band 160 has a second rigid portion 166 formed in a position surrounding the second hole 167. Therefore, when the second band 160 rotates around the second rotation axis 161a, the second rigid portion 166 suppresses deformation of the second hole 167. This allows the second band 160 to rotate smoothly along the outer periphery of the protrusion 130 with the protrusion 130 inserted through the second hole 167.

[0069] As shown in Figures 7 and 8, the third band 170 has a third main body portion (corresponding to the "main body portion") 175, a third hard portion (corresponding to the "hard portion") 176 made of a material harder than the third main body portion 175, and a third hole portion (corresponding to the "hole portion") 177 configured to allow the protrusion 130 to be inserted.

[0070] The third main body portion 175 extends along the longitudinal direction of the third band 170. The third rigid portion 176 and the third hole portion 177 are formed in the third end portion 171. The third hole portion 177 is formed in a substantially circular shape.

[0071] The third rotation shaft 171a is disposed at approximately the center of the third hole 177. The third hole 177 is formed to be larger than the protrusion 130 in the plan view shown in FIGS.

[0072] 6 , in the hemostatic device 100, the third band 170 is connected to the pressing member 110 by inserting the convex portion 130 through the third hole 177 of the third band 170. With the third end portion 171 connected to the pressing member 110 via the convex portion 130 and the third hole 177, the third band 170 becomes rotatable along the outer periphery of the convex portion 130.

[0073] The third band 170 has a third rigid portion 176 formed in a position surrounding the third hole 177. Therefore, when the third band 170 rotates around the third rotation shaft 171a, the third rigid portion 176 suppresses deformation of the third hole 177. This allows the third band 170 to rotate smoothly along the outer periphery of the protrusion 130 with the protrusion 130 inserted through the third hole 177.

[0074] There are no particular limitations on the materials used to make the main body portions 155, 165, and 175 and the hard portions 156, 166, and 176. The main body portions 155, 165, and 175 and the hard portions 156, 166, and 176 can be made of, for example, vinyl chloride resin, polyurethane resin, polyester resin, acrylic resin, polycarbonate resin, polyamide resin, polyolefin resin, etc. However, when the hard portions 156, 166, and 176 are made harder than the main body portions 155, 165, and 175, it is preferable that the hard portions 156, 166, and 176 be made of a material having a higher hardness (Shore A or Shore D) than the main body portions 155, 165, and 175. For example, when each of the main body portions 155, 165, 175 and each of the hard portions 156, 166, 176 are made of the same material (e.g., vinyl chloride resin), soft vinyl chloride resin can be used for the main body portions and hard vinyl chloride resin with a higher hardness than soft vinyl chloride resin can be used for the hard portions so that the hardness of the hard portions is higher than that of the main body portions. Note that each of the main body portions 155, 165, 175 can be fixed to each of the hard portions 156, 166, 176 by, for example, adhesion or fusion.

[0075] In this embodiment, the first band 150, the second band 160, and the third band 170 each have a main body portion 155, 165, 175, a hard portion 156, 166, 176, and a hole portion 157, 167, 177, but the main body portion, hard portion, and hole portion may be provided on at least one of the first band 150 and the second band 160.

[0076] Furthermore, there are no particular restrictions on the shape, length, thickness, etc. of each main body portion 155, 165, 175 of each band 150, 160, 170, the shape, length, thickness, etc. of each one end portion 151, 161, 171 of each band 150, 160, 170, or the shape, length, thickness, etc. of each other end portion 153, 163, 173 of each band 150, 160, 170.

[0077] In the hemostatic device 100, as shown in Figures 6 and 8, by inserting the holes 157, 167, 177 formed in each of the bands 150, 160, 170 into the convex portion 130, the ends 151, 161, 171 of each of the bands 150, 160, 170 can be arranged so as to overlap in the height direction of the convex portion 130.

[0078] 6 and 14, in this embodiment, the bands 150, 160, and 170 are arranged in the order of first band 150, third band 170, and second band 160 from one surface 120a of the support member 120. However, the order in which the bands 150, 160, and 170 are connected to the protrusion 130 (the positions of the bands 150, 160, and 170 in the height direction of the protrusion 130) is not particularly limited and can be changed as appropriate.

[0079] As shown in Figures 6 and 8, the first band 150 can rotate around a first rotation axis 151a while connected to the convex portion 130 of the pressing member 110, so as to move toward or away from the third band 170. Furthermore, as shown in Figures 6 and 8, the second band 160 can rotate around a second rotation axis 161a while connected to the convex portion 130 of the pressing member 110, so as to move toward or away from the third band 170. By rotating the bands 150, 160 toward or away from the third band 170 as described above, the hemostatic device 100 can change and adjust the magnitude of the angle θ1 formed between the bands 150, 160.

[0080] 6, 7, and 14, hemostatic device 100 is provided with anti-slip ring 127 that prevents one end 151, 161, 171 of each band 150, 160, 170 connected to protrusion 130 from accidentally slipping out from protrusion 130. Anti-slip ring 127 has a hole formed therein that can fit over protrusion 130.

[0081] As shown in Figures 1, 2, 3, and 4, the hemostatic device 100 has five fixing members: a first fixing member 181, a second fixing member 182, a third fixing member 183, a fourth fixing member 184, and a fifth fixing member 185.

[0082] 1 and 3, a first fixing member 181 is disposed on the outer surface of the first band 150. A second fixing member 182 is disposed on the outer surface of the second band 160.

[0083] 2 and 4, a third fixing member 183 is disposed on the inner surface of the first band 150. A fourth fixing member 184 is disposed on the inner surface of the second band 160. A fifth fixing member 185 is disposed on the inner surface of the third band 170.

[0084] The "inner surface" of each band 150, 160, 170 is the surface that is placed on the body surface side of the patient's hand H when the hemostatic device 100 is attached to the patient's hand H, and the outer surface of each band 150, 160, 170 is the surface that is located opposite the inner surface.

[0085] First fixing member 181 and second fixing member 182 are made up of the male side of a hook-and-loop fastener. Third fixing member 183, fourth fixing member 184, and fifth fixing member 185 are made up of the female side of a hook-and-loop fastener. A hook-and-loop fastener is a fastener that can be attached and detached from the surface, such as Magic Tape (registered trademark) or Velcro (registered trademark).

[0086] The specific structure of each of the fixing members 181, 182, 183, 184, and 185 is not limited as long as the pressing member 110 can be fixed to the right hand H1 by connecting the bands 150, 160, and 170 together while the hemostatic device 100 is placed on the patient's right hand H1. For example, some of the fixing members may be omitted, or the positions of the fixing members on the bands 150, 160, and 170 may be changed as desired. Furthermore, when each of the fixing members 181, 182, 183, 184, and 185 is formed of a hook-and-loop fastener, the male and female sides of the hook-and-loop fastener may be reversed. Furthermore, each of the fixing members 181, 182, 183, 184, and 185 may be, for example, a snap, a button, a clip, or a frame member with a hole formed therein.

[0087] As shown in FIGS. 1 and 2, the hemostatic device 100 has an injection portion 191 for injecting a fluid into the expansion member 140.

[0088] Injection part 191 is configured with a connector having a check valve (not shown) built in. Injection part 191 can be connected to a syringe (not shown).

[0089] Cushioning member 192 having an expandable space is disposed between injection part 191 and expansion member 140. Cushioning member 192 is made of a flexible bag-shaped member with a space formed inside. Cushioning member 192 may be provided with an arrow-shaped marker that indicates the insertion direction of the syringe into injection part 191.

[0090] Injection part 191 is connected to one end side of buffer member 192. The inner cavity of injection part 191 communicates with the space in buffer member 192. However, while the check valve built into injection part 191 is closed, communication between the inner cavity of injection part 191 and the space in buffer member 192 is blocked.

[0091] A flexible tube 193 is connected to the other end of the buffer member 192. The inner cavity of the tube 193 communicates with the space in the buffer member 192. The other end of the tube 193, opposite to the one end connected to the buffer member 192, is connected to the expansion member 140. The inner cavity of the tube 193 communicates with the inner cavity 143 of the expansion member 140.

[0092] When expanding the expansion member 140, the surgeon inserts the tip of a syringe (not shown) into the injection part 191 to open the check valve. With the check valve of the injection part 191 open, the surgeon presses the plunger of the syringe to inject air from the syringe into the lumen 143 of the expansion member 140.

[0093] When air is injected into the lumen 143 of the expansion member 140, the expansion member 140 expands. When the expansion member 140 expands, the buffer member 192, which communicates with the lumen 143 of the expansion member 140 via the tube 193, expands. By visually checking the expansion of the buffer member 192, the surgeon can easily know that the expansion member 140 has expanded without any air leakage.

[0094] When contracting the expansion member 140, the surgeon inserts the tip of the syringe into the injection part 191 and pulls the plunger of the syringe. By performing the above operation, the surgeon can discharge the air in the lumen 143 of the expansion member 140 into the syringe.

[0095] Next, a first example of use of the hemostatic device 100 will be described with reference to FIGS.

[0096] In the first use example, a procedure for using the hemostatic device 100 when stopping bleeding at a first puncture site p1 formed in a patient's right hand H1 will be described.

[0097] FIG. 10 shows a state in which the sheath tube of the introducer 200 has been inserted into the first puncture site p1 and various procedures have been performed.

[0098] When starting hemostasis, the surgeon connects each of the bands 150, 160, 170 to the protrusion 130 of the pressing member 110 as shown in Figure 8. Note that the hemostatic device 100 may be provided to the medical site with each of the bands 150, 160, 170 connected to the pressing member 110.

[0099] 10, the surgeon places the pressing member 110 so that it overlaps the back Hb of the patient's right hand H1. At this time, the surgeon visually checks the position of the marker 145 formed on the expansion member 140 while placing the marker 145 at the first puncture site p1, thereby enabling the pressing member 110 to be appropriately placed at the first puncture site p1.

[0100] In the hemostatic device 100, a recess 131 is provided in the protrusion 130 of the pressing member 110 (see FIGS. 6 and 14).

[0101] A space recessed toward the support member 120 is formed in the portion of the protrusion 130 where the recess 131 is provided. Therefore, when the protrusion 130 of the hemostatic device 100 is viewed from the outer surface side of the support member 120, components or objects arranged to overlap the portion of the protrusion 130 where the recess 131 is provided are easier to see than components or objects arranged to overlap other portions of the protrusion 130. In addition, the recess 131 is formed to be transparent. Therefore, when the surgeon wears the hemostatic device 100 on the patient's right hand H1, the surgeon can easily confirm the position of the first puncture site p1 formed on the patient's right hand H1 through the recess 131, and the position of the marker 145 of the expansion member 140 arranged to overlap the protrusion 130 in the surface direction of the support member 120, by visually viewing the recess 131.

[0102] After completing the procedure using the introducer 200, the surgeon may pull out a portion of the sheath tube of the introducer 200 from the first puncture site p1 formed in the patient's right hand H1 before attaching the hemostatic device 100 to the patient's right hand H1. For example, with the sheath tube of the introducer 200 remaining indwelled in the blood vessel B, the surgeon can pull out the sheath tube by about 2 to 3 cm toward the surgeon's hand, and then start the operation of attaching the hemostatic device 100.

[0103] 11 and 12, the surgeon wraps first band 150 and second band 160 around the outer circumference of the patient's right hand H1. The surgeon brings fourth fixing member 184 (see FIG. 2) located on the inner surface of second band 160 into contact with first fixing member 181 (see FIG. 1) located on the outer surface of first band 150, thereby fixing first band 150 and second band 160 via fixing members 181, 184.

[0104] When wrapping the first band 150 and the second band 160 around the outer circumference of the patient's right hand H1, the surgeon can rotate the first band 150 around the first rotation axis 151a and rotate the second band 160 around the second rotation axis 161a. By rotating the first band 150 and the second band 160 toward or away from the third band 170, the surgeon can adjust the position at which each band 150, 160 is wrapped around the patient's right hand H1. For example, the surgeon can adjust the angle θ1 (see FIG. 8 ) formed between each band 150, 160 so that each band 150, 160 is wrapped around the patient's right hand H1 closer to (proximal to) the forearm A than the first puncture site p1.

[0105] 13, the surgeon places a portion of the third band 170 on the palm side of the patient's right hand H1 while passing the third band 170 through the interdigital space fb located between the thumb and index finger of the patient's right hand H1. At this time, the surgeon brings the fifth fixing member 185 (see FIG. 2) located on the inner surface of the third band 170 into contact with the second fixing member 182 (see FIG. 1) located on the outer surface of the second band 160, thereby fixing the third band 170 and the second band 160 via the fixing members 182, 185.

[0106] When placing a portion of the third band 170 on the palm side of the patient's right hand H1 through the interdigital portion fb, the surgeon can rotate the third band 170 around the third rotation axis 171a. By rotating the third band 170 in a direction toward or away from the first band 150 or the second band 160, the surgeon can adjust the position of the third band 170 on the patient's right hand H1.

[0107] As described above, the surgeon positions the first band 150 and the second band 160 so that they are wrapped around the outer circumference of the patient's right hand H1, and further positions the third band 170 so that it is hooked onto the interdigital region fb between the thumb and index finger of the patient's right hand H1, thereby effectively preventing the hemostatic device 100 from shifting out of position from the patient's right hand H1.

[0108] With a syringe connected to the injection section 191, the surgeon injects air into the expansion member 140 to expand the expansion member 140. As shown in Fig. 14 , in the hemostatic device 100, when the expansion member 140 expands, the expansion member 140 applies a compressive force to the first puncture site p1.

[0109] As shown in FIG. 14 , the support member 120 of the hemostatic device 100 is formed with a curved region 123 that is curved convexly in the direction in which the convex portion 130 protrudes (upward in the figure). The surgeon can fix the pressing member 110 to the patient's right hand H1 so that the curved region 123 is positioned along part of the outer periphery of the patient's right hand H1. When the expansion member 140 expands while the hemostatic device 100 is attached to the patient's right hand H1 in this manner, the support member 120 presses the expansion member 140 along the outer periphery of the patient's right hand H1. This prevents the expansion member 140 from lifting up from the patient's right hand H1. Therefore, the hemostatic device 100 can effectively apply a compressive force to the first puncture site p1 using the expansion member 140.

[0110] After expanding the expansion member 140, the surgeon removes the sheath tube of the introducer 200 from the first puncture site p1 formed in the patient's right hand H1, as shown in Figure 13. While using the hemostatic device 100 to stop bleeding, the surgeon checks to see if there is any bleeding from the first puncture site p1 formed in the patient's right hand H1. If there is bleeding from the first puncture site p1 formed in the patient's right hand H1, the surgeon adjusts the amount of air injected into the expansion member 140.

[0111] By following the above procedure, the surgeon can use the hemostatic device 100 to stop bleeding at the first puncture site p1 formed in the patient's right hand H1.

[0112] 15 shows a second example of use of the hemostatic device 100. The second example of use is an example of use of the hemostatic device 100 when stopping bleeding at a second puncture site p2 formed in the patient's right hand H1.

[0113] As shown in FIG. 15, when stopping bleeding at a second puncture site p2 formed on the patient's right hand H1, the surgeon attaches the hemostatic device 100 to the patient's right hand H1. The second puncture site p2 formed on the patient's right hand H1 is located distal to the patient's right hand H1 relative to the first puncture site p1 (see FIG. 9). When wrapping the bands 150, 160 around the patient's right hand H1, the surgeon rotates the bands 150, 160 about the rotation axes 151a, 161a. For example, the surgeon can adjust the angle θ1 (see FIG. 8) formed between the bands 150, 160 so that the bands 150, 160 are wrapped around the patient's right hand H1 closer to the forearm A (proximal side) than the first puncture site p1. By wrapping each band 150, 160 around the proximal position of the patient's right hand H1, the surgeon can prevent the distal portion of the patient's right hand H1 from being restricted by each band 150, 160.

[0114] Figure 17 shows a third use example of hemostatic device 100. Figure 18 shows a fourth use example of hemostatic device 100. The third use example is an example of use of hemostatic device 100 when stopping bleeding at a third puncture site p3 formed in a patient's left hand H2. The fourth use example is an example of use of hemostatic device 100 when stopping bleeding at a fourth puncture site p4 formed in a patient's left hand H2.

[0115] In the third and fourth use examples, hemostatic device 100 can be attached to the patient's left hand H2 using the same procedure as in the first and second use examples described above. The surgeon can adjust the position at which each band 150, 160 is wrapped around the left hand H2 by rotating each band 150, 160 closer to or farther away from third band 170 depending on the position of each puncture site p3, p4. By adjusting the wrapping position of each band 150, 160, the surgeon can prevent the distal portion of the patient's left hand H2 from being restricted by each band 150, 160 when stopping the bleeding at each puncture site p3, p4.

[0116] As described in each use example, the hemostatic device 100 can be worn on either the patient's right hand H1 or the patient's left hand H2. Furthermore, when the hemostatic device 100 is used to stop bleeding at puncture sites p1 and p2 formed at different positions on the patient's right hand H1, and when the hemostatic device 100 is used to stop bleeding at puncture sites p3 and p4 formed at different positions on the patient's left hand H2, the hemostatic device 100 can be worn on the patient's hand H so that the distal portion of the patient's hand H is not restricted by the bands 150 and 160.

[0117] As described above, the hemostatic device 100 according to this embodiment includes a pressing member 110 configured to compress a first puncture site p1 formed on a patient's hand H, a first band 150 configured to be connectable to the pressing member 110, a second band 160 configured to be connectable to the pressing member 110, and a third band 170 configured to be connectable to the pressing member 110. The first band 150 is connected to the pressing member 110 and has a first end portion 151 having a first rotation axis 151a and a first other free end portion 153. The second band 160 is connected to the pressing member 110 and has a second end portion 161 having a second rotation axis 161a and a second other free end portion 163. The first band 150 and the second band 160 are configured to be rotatable around a first rotation axis 151a and a second rotation axis 161a so as to move closer to or further away from the third band 170.

[0118] In the hemostatic device 100 configured as described above, the first band 150 can rotate relative to the pressing member 110 around the first rotation axis 151a, and the second band 160 can rotate relative to the pressing member 110 around the second rotation axis 161a. Therefore, the hemostatic device 100 can adjust the positions of the first band 150 and the second band 160 by rotating the first band 150 and the second band 160 relative to the pressing member 110 while placing the pressing member 110 at the puncture site p1 formed on the hand H. This allows the first band 150 and the second band 160 to be placed on the patient's hand H so as not to restrict the movement of the patient's hand H, and the hemostatic device 100 can be easily worn on the hand H.

[0119] Further, pressing member 110 has a support member 120 and a protrusion 130 that is provided on one surface 120a of support member 120 and protrudes in a direction away from support member 120. A first end portion 151 of first band 150 and a second end portion 161 of second band 160 are each connected to protrusion 130 in a state that allows rotation relative to pressing member 110.

[0120] In the hemostatic device 100 configured as described above, the first end 151 of the first band 150 and the second end 161 of the second band 160 are connected to the convex portion 130. Therefore, the first rotation shaft 151a of the first end 151 of the first band 150 and the second rotation shaft 161a of the second end 161 of the second band 160 are positioned on the convex portion 130. Because the rotation shafts 151a, 161a of the bands 150, 160 are positioned on the convex portion 130, when placing the pressing member 110 at the first puncture site p1 formed on the patient's hand H, the relative positions of the bands 150, 160 can be easily adjusted based on the position of the convex portion 130. Therefore, the hemostatic device 100 allows for easy adjustment of the wrapping positions of the bands 150, 160 on the patient's hand H.

[0121] The support member 120 has an extension member 140 disposed on another surface 120b located opposite to one surface 120a of the support member 120. The protrusion 130 is disposed at a position overlapping at least a portion of the extension member 140 in the planar direction of the support member 120.

[0122] In the hemostatic device 100 configured as described above, the convex portions 130 overlap at least a portion of the expansion member 140 in the planar direction of the support member 120. Therefore, one end portion 151, 161 of each of the bands 150, 160 connected to the convex portions 130 overlaps at least a portion of the expansion member 140 in the planar direction of the support member 120. Therefore, when placing the expansion member 140 at the first puncture site p1 formed on the patient's hand H, the hemostatic device 100 prevents the expansion member 140 from shifting position, and allows the position of each of the bands 150, 160 to be easily adjusted by rotating each of the bands 150, 160 connected to the convex portions 130. Furthermore, because the bands 150, 160 are operated while connected to the convex portions 130, the movement of the bands 150, 160 can be prevented from being transmitted to the expansion member 140 arranged on the other surface 120b of the support member 120. Therefore, when the hemostatic device 100 is attached to the patient's hand H, the expansion member 140 can be prevented from shifting out of position from the first puncture site p1 by operating the bands 150, 160.

[0123] The first band 150 has a first main body 155, a first hard portion 156 made of a material harder than the first main body 155, and a first hole 157 configured to allow the projection 130 to be inserted therein. The first hard portion 156 is disposed so as to surround the first hole 157.

[0124] In the hemostatic device 100 configured as described above, a first rigid portion 156 is formed at a position surrounding the first hole 157 at the first end portion 151 of the first band 150. When the first band 150 rotates around the first rotation axis 151a, the first rigid portion 156 suppresses deformation of the first hole 157. This allows the first band 150 to rotate smoothly along the outer periphery of the protrusion 130 in the hemostatic device 100 with the protrusion 130 inserted into the first end portion 151.

[0125] Furthermore, the protrusion 130 has a recess 131 that is recessed toward the support member 120. The recess 131 is transparent.

[0126] In the hemostatic device 100 configured as described above, a space recessed toward the support member 120 is formed in the portion of the convex portion 130 where the concave portion 131 is provided. Therefore, when the convex portion 130 is viewed from the outer surface side of the support member 120, a component or object placed over the portion of the convex portion 130 where the concave portion 131 is provided is easier to see than a component or object placed over other portions of the convex portion 130. In addition, the concave portion 131 is formed to be transparent. Therefore, when the surgeon attaches the hemostatic device 100 to the patient's hand H, the surgeon can easily confirm the position of the puncture site (e.g., first puncture site p1) formed in the patient's hand H through the concave portion 131 by visually viewing the concave portion 131.

[0127] Furthermore, the support member 120 has a curved region 123 that is curved in a convex shape in the direction in which the convex portion 130 protrudes.

[0128] In the hemostatic device 100 configured as described above, the pressing member 110 can be fixed to the patient's right hand H1 so that the curved region 123 is positioned along part of the outer periphery of the patient's right hand H1. When the expansion member 140 expands with the curved region 123 positioned in this manner, the support member 120 presses the expansion member 140 along the outer periphery of the patient's right hand H1. This allows the support member 120 to prevent the expansion member 140 from lifting up from the patient's right hand H1. Therefore, the hemostatic device 100 can effectively apply a compressive force to the first puncture site p1 with the expansion member 140.

[0129] Furthermore, a first end portion 151 of the first band 150 and a second end portion 161 of the second band 160 are configured to be connectable to the protrusion 130 so as to overlap in the height direction of the protrusion 130.

[0130] In the hemostatic device 100 configured as described above, the first end 151 of the first band 150 and the second end 161 of the second band 160 are located at different positions in the height direction of the convex portion 130. This prevents one band from interfering with the other band when the bands 150, 160 rotate. This allows the hemostatic device 100 to smoothly rotate the bands 150, 160 around the convex portion 130.

[0131] Third band 170 is connected to pressing member 110 and has a third end 171 having a third rotation axis 171a, and a free third end 173. Third band 170 is configured to be rotatable about third rotation axis 171a so as to move toward or away from each of first band 150 and second band 160.

[0132] In the hemostatic device 100 configured as described above, in addition to the first band 150 and the second band 160, the third band 170 can also rotate relative to the pressing member 110. For example, when the pressing member 110 is positioned at each of the puncture sites p1 and p2 formed on the patient's right hand H1 or at each of the puncture sites p3 and p4 formed on the patient's left hand H2, the hemostatic device 100 can easily adjust the position of the third band 170 relative to each of the hands H1 and H2 by rotating the third band 170. With the positions of the bands 150, 160, and 170 adjusted, the hemostatic device 100 can effectively prevent the pressing member 110 from shifting position relative to each of the puncture sites p1, p2, p3, and p4 of the hands H1 and H2 by fixing the bands 150, 160, and 170 to each other.

[0133] Next, modified examples of the hemostatic device of the present invention will be described. In the description of the modified examples, explanations of the components and the procedure for using the hemostatic device already explained in the description of the above-mentioned embodiment will be omitted as appropriate. Furthermore, content not specifically explained in each modified example can be the same as the above-mentioned embodiment.

[0134] <Variation 1> FIG. 19 shows a part of a hemostatic device according to the first modification.

[0135] As shown in FIG. 19, the hemostatic device according to the first modification has a restricting portion 310 that restricts the range of rotation of the first band 150A.

[0136] The restricting portion 310 has a protrusion 311 formed on a part of the outer circumferential surface of the convex portion 130A, and a groove 312 formed in the first end portion 151 of the first band 150A.

[0137] When the first band 150A rotates a predetermined amount around the first rotation axis 151a, the protrusion 311 hits the end of the groove 312 located in the direction of rotation of the first band 150A. When the protrusion 311 hits the end of the groove 312, the rotation of the first band 150A toward that end is restricted. As a result, the range of rotation of the first band 150A is determined by the length of the groove 312 along the direction of rotation of the first band 150A.

[0138] When attaching the hemostatic device according to Modification 1 to the patient's hand H, the surgeon can prevent the first band 150A from rotating without restriction around the circumferential direction of the protrusion 130. This allows the surgeon to easily position the first band 150A at the desired position on the patient's hand H. This makes it even easier to attach the hemostatic device 100 to the patient's hand H.

[0139] There are no particular limitations on the shape, arrangement, number, etc. of the protrusions 311 and grooves 312 that make up the limiting portion 310. There are also no particular limitations on the specific configuration of the limiting portion 310, as long as it can limit the rotation of the first band 150 within a predetermined range.

[0140] Furthermore, it is sufficient that the limiting section 310 is provided on at least one of the first and second bands. Therefore, the limiting section 310 may be provided only on the second band, or on both the first and second bands. Furthermore, when the third band is configured to be rotatable as in the embodiment described above (see FIG. 8), the limiting section 310 may be provided on all of the first, second, and third bands, or on at least one of the first and second bands and the third band.

[0141] <Variation 2> Fig. 20 shows a plan view of a hemostatic device 100A according to Modification 2. Fig. 21 shows a side view of a pressing member 110 as seen in the direction of arrow 21A shown in Fig. 20. Figs. 22 to 24 show an example of a procedure for using the hemostatic device 100A according to Modification 2.

[0142] As shown in FIGS. 20 and 21, a hemostatic device 100A according to Modification 2 has an auxiliary rotation shaft 410 in which the protrusion 130 extends in a direction intersecting the first rotation shaft 151a and the second rotation shaft 161a.

[0143] The "direction intersecting the first rotation axis 151a and the second rotation axis 161a" is the direction along the line K shown in Fig. 20. The rotation direction of the third band 170A around the auxiliary rotation axis 410 is the direction in which the third band 170A approaches or moves away from the support member 120, as shown by the arrows z1-z2 in Fig. 21.

[0144] As shown in Figures 20 and 21, the third band 170A has a third end portion 171A that is connectable to the protrusion 130 via the auxiliary rotation axis 410, a free third other end portion 173A, and a main body portion 175A that extends between the third end portion 171A and the third other end portion 173A.

[0145] The third end portion 171A of the third band 170 may be provided with an insertion portion 179 into which an auxiliary rotation shaft 410 is rotatably inserted, as shown in FIG.

[0146] In the hemostatic device 100A according to this modification, a third rotation axis 171a (see FIGS. 6 and 7) is not provided at the third end portion 171A of the third band 170. In other words, the third band 170 is not configured to be rotatable so as to move toward or away from the first band 150 and the second band 160.

[0147] In the hemostatic device 100A according to this modification, the expansion member 140A has an outer shape of an isosceles triangle in the plan view shown in Fig. 20. The apex of the isosceles triangle-shaped expansion member 140A can be positioned, for example, on the distal side when the hemostatic device 100A is attached to the hand H (the side on which the third band 170A is placed in Fig. 17) or on the proximal side when the hemostatic device 100A is attached to the hand H (the side opposite to the side on which the third band 170A is placed in Fig. 17).

[0148] Figure 22 illustrates a first puncture spot s1 including a first puncture site p1 formed on the patient's right hand H1 and its surrounding area, and a second puncture spot s2 including a second puncture site p2 formed on the patient's right hand H1 and its surrounding area.

[0149] The first puncture spot s1 includes a predetermined area around the snuff box. The first puncture spot s1 has a generally isosceles triangular shape that tapers toward the distal end of the patient's right hand H1. When the patient spreads the thumb of the right hand H1, the first puncture spot s1 forms a recess that is recessed inward of the patient's right hand H1 relative to the extensor pollicis longus tendon t1.

[0150] The second puncture spot s2 includes a predetermined range on the distal side of the snuffbox of the patient's right hand H1 based on the extensor pollicis longus tendon t1. The second puncture spot s2 has a generally isosceles triangular shape that tapers toward the proximal side of the patient's right hand H1. When the patient spreads the thumb of the right hand H1, the second puncture spot s2 forms a recess that is recessed inward of the extensor pollicis longus tendon t1 toward the inside of the patient's right hand H1.

[0151] When using hemostatic device 100A to stop bleeding at a first puncture site p1 formed on a patient's right hand H1, the surgeon places expansion member 140A at the first puncture spot s1. When placing expansion member 140A at the first puncture spot s1, the surgeon places the apex of expansion member 140A distal to the patient's right hand H1. By placing expansion member 140A as described above, the surgeon can position expansion member 140A so that it overlaps with first puncture spot s1. This enables hemostatic device 100A to allow expansion member 140A to effectively apply a compressive force to first puncture spot s1, including first puncture site p1 and its surrounding area. Furthermore, the hemostatic device 100A can prevent the expansion member 140A from shifting out of position from the first puncture site p1 formed on the patient's right hand H1 by placing the expansion member 140 at the first puncture spot s1, which forms a recess on the inside of the patient's right hand H1 when the patient spreads the thumb of the right hand H1.

[0152] When using hemostatic device 100A to stop bleeding at a second puncture site p2 formed on a patient's right hand H1, the surgeon changes the orientation of hemostatic device 100A and attaches it to the patient's right hand H1, as shown in FIG. 23 . Specifically, the surgeon flips the orientation of hemostatic device 100A up and down in FIG. 23 so that the apex of expansion member 140A is positioned proximal to the patient's right hand H1. By flipping the orientation of hemostatic device 100A as described above, the surgeon can position the expansion member 140A so that it overlaps the second puncture spot s2. This allows the surgeon to effectively apply compression force to the second puncture spot s2, including the second puncture site p2 and its surrounding area. Furthermore, the surgeon can prevent the expansion member 140 from shifting from the second puncture spot s2.

[0153] With the hemostatic device 100A inverted and positioned on the patient's right hand H1 as described above, the surgeon rotates the third band 170A in the z2 direction around the auxiliary rotation shaft 410 as shown in FIG. 24. By rotating the third band 170A in the z2 direction around the auxiliary rotation shaft 410, the surgeon can position the third band 170A in the interdigital region fb between the thumb and index finger of the patient's right hand H1 (see FIG. 22). Furthermore, by rotating the bands 150 and 160 around the respective rotation shafts 151a and 161a, the surgeon can position the bands 150 and 160 on the patient's right hand H1 so that the movement of the patient's right hand H1 is not restricted. This allows the surgeon to firmly secure the hemostatic device 100A to the patient's right hand H1.

[0154] In the above example, the application of the hemostatic device 100A to each puncture spot s1, s2 on the patient's right hand H1 was described, but the hemostatic device 100A can also be applied to each puncture spot, including each puncture site p3, p4 (see Figure 16), on the patient's left hand H2 using a similar procedure.

[0155] <Variation 3> FIG. 25 shows a part of a hemostatic device according to the third modification.

[0156] 25, the hemostatic device of Modification 3 has a limiting portion 310A that limits the rotation range of the first band 150A. The hemostatic device of Modification 3 differs from the hemostatic device of Modification 1 described above (see FIG. 19) in the configuration of the limiting portion 310A.

[0157] In the hemostatic device according to the first modification, the restrictor 310 has a protrusion 311 formed on part of the outer peripheral surface of the convex portion 130A and a groove 312 formed in the first end portion 151 of the first band 150A. On the other hand, in the hemostatic device according to this modification, as shown in Fig. 25, the restrictor 310A has a protrusion 311 formed on part of the outer peripheral surface of the convex portion 130A and a protrusion 313 formed in the first hole 157 of the first end portion 151 of the first band 150B.

[0158] In the hemostatic device of Modification 3, when first band 150B rotates a predetermined amount around first rotation axis 151a, protrusion 311 of convex portion 130A abuts against protrusion 313 of first band 150B. When protrusion 311 of convex portion 130A abuts against protrusion 313 of first band 150B, the rotation of first band 150B relative to convex portion 130A is restricted. Therefore, the rotation range of first band 150B is determined by the distance between adjacent protrusions 311 of convex portion 130A.

[0159] The shape, arrangement, number, etc. of the protrusions 311, 313 that make up the limiting portion 310A are not particularly limited. The convex portion 130A may be provided with the auxiliary rotation shaft 410 (see FIG. 21) described in Modification 2.

[0160] <Variation 4> 26 shows a first band 150C of a hemostatic device according to Modification 3. FIG. 27 shows a partial cross-sectional view taken along arrows 27A-27A shown in FIG.

[0161] A first band 150C of the hemostatic device according to the fourth modification differs from the first band 150 of the above-described embodiment (see FIG. 7) in the connection structure between the first end portion 151 and the first main body portion 155.

[0162] As shown in FIG. 27, the first band 150C has a connection mechanism 510 that mechanically connects the first end portion 151 and the main body portion 155.

[0163] The connection mechanism 510 has a connection hole 151 b provided in the first end portion 151 and an insertion portion 155 a formed in the main body portion 155 .

[0164] The insertion portion 155a is configured to be able to be inserted into the connection hole 151b. Furthermore, the insertion portion 155a can be wound around the connection hole 151b by a predetermined amount while inserted through the connection hole 151b. The insertion portion 155a can be provided with a fixing member (for example, a hook-and-loop fastener) that maintains the state in which the insertion portion 155a is inserted and wound around the connection hole 151b.

[0165] In the hemostatic device of this modification, the length of the first main body 155 can be adjusted by adjusting the amount of wrapping (bending) of the insertion portion 155a around the connection hole 151b. Therefore, in the hemostatic device of this modification, the length of the first band 150 can be adjusted to match the size of the patient's hand H. As a result, the hemostatic device of this modification can properly secure the first band 150 to the patient's hand H even when used by patients with hand Hs of different sizes.

[0166] The specific configuration of connection mechanism 510 is not limited as long as it can be configured to enable connection and separation between first end portion 151 and first main body 155. Connection mechanism 510 can also be provided on second band 160 and / or third band 170.

[0167] <Variation 5> Fig. 28 shows a cross-sectional view of a hemostatic device according to Modification 5. Fig. 28 is a cross-sectional view corresponding to Fig. 6 of the embodiment described above. Note that in Fig. 28, illustrations other than pressing member 110 are omitted.

[0168] In the hemostatic device according to the fifth modification, the expansion member 140B is configured to be connectable to and detachable from the support member 120.

[0169] The hemostatic device according to this modification is provided with a connection mechanism 610 that enables the expansion member 140B to be connected to and separated from the support member 120.

[0170] The connection mechanism 610 has a first connection member 611 provided on the surface of the extension member 140B that faces the support member 120, and a second connection member 612 provided on the other surface 120b of the support member 120 that faces the extension member 140B.

[0171] Each of the connecting members 611, 612 can be configured, for example, as a male or female hook-and-loop fastener that can be connected and separated from each other. However, the specific configuration of the connecting mechanism 610 is not limited as long as it can be configured to connect and separate the support member 120 and the extension member 140B.

[0172] In the hemostatic device of this modification, the expansion member 140B is configured to be connectable to and detachable from the support member 120. Therefore, when the hemostatic device of this modification is used to stop bleeding at a puncture site (e.g., first puncture site p1), if blood leaking from the puncture site comes into contact with the expansion member 140B, the expansion member 140B can be separated from the support member 120, and only the expansion member 140B can be discarded. On the other hand, in the hemostatic device of this modification, the support member 120 and the bands 150, 160, and 170 can be reused if they do not come into contact with blood leaking from the puncture site. Therefore, the hemostatic device of this modification makes it possible to reduce the medical costs required for stopping bleeding at a puncture site formed on a patient's hand H.

[0173] The hemostatic device according to the present invention has been described above through embodiments, but the present invention is not limited to the content described in the specification and can be modified as appropriate based on the description of the claims.

[0174] Although the description of the embodiments illustrates a hemostatic device for staunching a puncture site on the back of the hand, the hemostatic device can also be used to staunch a puncture site on the palm of the hand. Furthermore, the placement of each band when wearing the hemostatic device on a patient's hand is not limited to the positions illustrated and can be modified as appropriate. For example, the third band can be placed in an interdigital area other than the area between the thumb and index finger. Furthermore, the hemostatic device may also be used on the foot, which has many moving parts such as fingers, similar to the hand. For example, the hemostatic device may be used to staunch a puncture site on the dorsum or sole of the foot.

[0175] In the description of the embodiment, the first rotating shaft at the first end of the first band and the second rotating shaft at the second end of the second band are configured to be located at the same position in a plan view of the pressing member when each band is connected to the pressing member. However, each rotating shaft may be located at a different position in a plan view of the pressing member within the range where the expansion member of the pressing member is located. Also, each rotating shaft may be located at a position that does not overlap with the expansion member in a plan view of the pressing member.

[0176] Furthermore, the shape and dimensions of each part of the hemostatic device are not particularly limited as long as it is possible to fix each band to at least a part of the hand while placing a pressing member at the puncture site, and the specific structure of each part can be changed as desired.

[0177] This application is based on Japanese Patent Application No. 2020-139905, filed on August 21, 2020, the disclosure of which is incorporated herein by reference in its entirety. [Explanation of symbols]

[0178] 100, 100A Hemostatic Device 110 Pressing member 120 Support member 120a one surface of the support member 120b other surface of support member 123 Curved area of ​​support member 127 Fixing ring 130, 130A convex part 131 recess 140, 140A extension member 143 Lumen 145 Markers 150 First Band 150A, 150B, 150C 1st band 151 first end 151a First rotation axis 151b Connection hole 153 First other end 155 First main body (main body) 155a Insertion part 156 First hard part (hard part) 157 First hole (hole) 160 Second Band 161 Second end 161a Second rotation axis 163 Second other end 165 Second main body (main body) 166 Second hard part (hard part) 167 Second hole (hole) 170, 170A 3rd band 171, 171A Third end 171a Third rotation axis 173, 173A third other end 175, 175A Third body part (body part) 176 Third Hard Section (Hard Section) 177 Third Hole (Hole) 181 first fixing member 182 Second fixing member 183 Third fixing member 184 Fourth fixing member 185 Fifth fixing member 191 Injection part 192 Buffer material 193 tubes 200 Introducer 310, 310A Restriction 311 Protrusion 312 Groove 313 Protrusion 410 Auxiliary Rotating Axis 510 Connection mechanism 610 Connection mechanism 611 First connecting member 612 Second connecting member H hand H1 right hand H2 left hand Hb back of hand fb between fingers p1 1st puncture site (puncture site) p2 2nd puncture site (puncture site) p3 3rd puncture site (puncture site) p4 4th puncture site (puncture site) s1 First puncture spot s2 Second puncture spot t1 Extensor pollicis longus tendon of the right hand t2 Extensor pollicis longus tendon of the left hand A. Forearm B Artery (blood vessel) θ1 Angle between the first and second bands

Claims

1. a pressing member configured to press against the puncture site on the patient; a first band configured to be connectable to the pressing member; a second band configured to be connectable to the pressing member; a third band body configured to be connectable to the pressing member, the first band has a first end portion connected to the pressing member and having a first rotation axis, and a first other end portion that is free; the second band has a second end connected to the pressing member and having a second rotation axis, and a second other end that is free; the first band and the second band are configured to be rotatable about the first rotation axis and the second rotation axis so as to move closer to or away from the third band, the pressing member has a support member and a protrusion provided on one surface of the support member and protruding in a direction away from the support member, the first end of the first band and the second end of the second band are connected to the protrusion in a rotatable state with respect to the pressing member, The protrusion has a recess recessed toward the support member, The recess is formed to be transparent.

2. the support member has an extension member disposed on another surface of the support member opposite to the one surface, The hemostatic device according to claim 1 , wherein the protrusion is disposed at a position overlapping at least a portion of the expansion member in a planar direction of the support member.

3. The hemostatic device according to claim 2 , wherein the expansion member is configured to be connectable and detachable to the support member.

4. At least one of the first band and the second band has a main body portion, a hard portion made of a material harder than the main body portion, and a hole portion configured to allow the protrusion to be inserted therein, The hemostatic device according to any one of claims 1 to 3, wherein the hard portion is disposed so as to surround the hole.

5. The hemostatic device according to any one of claims 1 to 4, wherein the support member has a curved region that is curved convexly in a direction in which the convex portion protrudes.

6. The hemostatic device according to any one of claims 1 to 5, wherein the first end of the first band and the second end of the second band are configured to be connectable to the convex portion so as to overlap in the height direction of the convex portion.

7. The hemostatic device according to any one of claims 1 to 6, further comprising a limiting portion that limits the rotation range of at least one of the first band and the second band.

8. the third band has a third end portion connected to the pressing member and having a third rotation axis, and a third other end portion that is free; The hemostatic device according to any one of claims 1 to 7, wherein the third band is configured to be rotatable about the third rotation axis so as to move closer to or further away from each of the first band and the second band.

9. the protrusion has an auxiliary rotation axis extending in a direction intersecting the first rotation axis and the second rotation axis, The hemostatic device according to any one of claims 1 to 8, wherein the third band has a third end portion configured to be connectable to the convex portion via the auxiliary rotation shaft, and a third other end portion that is free.

Images