JP2021153977A - Hemostatic device - Google Patents

Abstract

To provide a highly convenient hemostatic device which can prevent accumulation of blood between an expansion member and a puncture site and allows an operator to easily confirm a hemostatic state of the puncture site.SOLUTION: An expansion member 110 that a hemostatic device 100 has includes a first region 120 and a second region 130 which is more hydrophilic than the first region on a first surface 111a arranged on a puncture site p. The second region is a groove part 140 dented on an outer surface side with respect to the first region.SELECTED DRAWING: Figure 4

Description

The present invention relates to a hemostatic device.

Conventionally, there has been known a technique of introducing various medical long bodies (for example, catheters) into a blood vessel through a puncture site formed on a limb such as a patient's hand or arm to treat or treat the lesion site. ing. When such a procedure is performed, the surgeon or the like stops bleeding at the puncture site when removing the medical long body from the puncture site.

As a hemostatic device used to stop bleeding at the puncture site, a fixing member having a band around the limb and an expansion such as a balloon that is connected to the band and expands by injecting fluid to press the puncture site. A member having a member has been proposed (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2010-131296

The hemostatic device of Patent Document 1 is used, for example, in the following procedure.

When the surgeon or the like removes the medical long body from the puncture site formed on the limb of the patient, the surgeon or the like places a balloon at the puncture site. The surgeon or the like fixes the hemostatic device to the patient's limb with the balloon placed at the puncture site. The surgeon or the like removes the medical long body from the puncture site with the hemostatic device attached to the limb. At this time, the surgeon or the like may remove the medical elongated body from the puncture site before injecting the fluid into the balloon, or may remove the medical elongated body from the puncture site while injecting the fluid into the balloon. It may be removed, or the medical elongated body may be removed from the puncture site after a small amount of injection into the balloon to expand it. After removing the medical long body, the surgeon or the like applies a compressive force to the puncture site by injecting a fluid into the balloon and further expanding the balloon.

In the above procedure, the medical long body is removed from the puncture site with the balloon placed at the puncture site. Therefore, when bleeding occurs from the puncture site, the bleeding blood may stay between the balloon and the skin surface layer around the puncture site. When blood stays between the balloon and the body surface around the puncture site, the visibility of the puncture site is reduced, and it becomes difficult for the operator or the like to confirm the hemostasis state of the puncture site.

The present invention has been made in view of the above problems, and it is convenient that blood can be prevented from staying between the expansion member and the puncture site, and the operator or the like can easily confirm the hemostasis state of the puncture site. It is an object of the present invention to provide a hemostatic device having excellent sex.

The hemostatic device that achieves the above object includes an expansion member configured to be arranged at a site where bleeding should be stopped in the limb, and a fixing member configured to fix the expansion member to the limb. The member has a first region and a second region having a higher hydrophilicity than the first region on the surface to be arranged at the site to be hemostasis, and the second region is more than the first region. It is a groove portion recessed on the outer surface side, and the groove portion includes a hydrophilic coat layer.

According to the hemostatic device configured as described above, when the expansion member is placed at the puncture site and the medical long body is removed from the puncture site with the hemostatic device attached to the patient's limb, the puncture site is used. Even if bleeding occurs from the body, blood can be guided to the peripheral edge of the surface of the expansion member along the groove provided with the hydrophilic coat layer. Therefore, the above-mentioned hemostatic device can suppress the bleeding blood from staying between the first region of the expansion member and the skin surface layer around the puncture site, and the first region of the expansion member arranged at the puncture site can be visually recognized. Can maintain sex. As a result, the convenience when the surgeon or the like uses the hemostatic device is improved.

It is a figure which shows the hemostatic device which concerns on embodiment, and is the top view seen from the inner surface side of the belt part of a fixing member. It is sectional drawing of the hemostatic device along the arrow 2A-2A line shown in FIG. It is an enlarged view of the 3A part shown in FIG. It is a top view of the first surface of the expansion member seen from the direction of arrow 4A shown in FIG. FIG. 5 is a cross-sectional view taken along the line 5A-5A shown in FIG. It is sectional drawing which follows the arrow 6A-6A line shown in FIG. It is a figure which shows the state when the hemostatic device which concerns on embodiment is attached to the limb of a patient. It is a top view which shows the 2nd region which concerns on modification 1. FIG. It is a top view which shows the 2nd region which concerns on the modification 2.

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

1 to 6 are views for explaining the hemostatic device 100 according to the embodiment, and FIG. 7 is a view showing a state in which the hemostatic device 100 is attached to the forearm portion (corresponding to “limb”) A of the patient. ..

<Hemostatic device>
As shown in FIG. 7, the hemostatic device 100 has a puncture site formed in the forearm A for the purpose of inserting a catheter or the like for treatment or examination into a blood vessel (for example, a radial artery) (“a site to be hemostatic”). When the sheath tube of the introducer placed in p is removed, it is configured as a medical device for stopping bleeding at the puncture site p.

The hemostatic device 100 is outlined with reference to FIGS. 1, 2 and 3, and fixes the expansion member 110 configured to be arranged at the puncture site p of the forearm portion A and the expansion member 110 to the forearm portion A. A fixing member 170 configured as described above is provided.

<Fixing member>
As shown in FIGS. 1, 2, and 4, the fixing member 170 includes a belt portion 171 configured to be wound around the patient's forearm portion A, and connecting portions 172a and 172b arranged around the belt portion 171. Be prepared.

FIG. 1 shows a plan view of the hemostatic device 100 as seen from the inner surface 171a side of the belt portion 171. The inner surface 171a of the belt portion 171 is a surface on the side where the hemostatic device 100 is arranged so as to face the skin surface layer of the patient's forearm portion A when the hemostatic device 100 is attached to the patient's forearm portion A. The outer surface 171b (see FIG. 3) of the belt portion 171 is the surface opposite to the inner surface 171a.

The belt portion 171 can be made of, for example, a flexible member. Examples of the material constituting the belt portion 171 include polyvinyl chloride, polyethylene, polypropylene, polybutadiene, polyolefin such as ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), and polybutylene terephthalate (PBT). Various thermoplastic elastomers such as polyester, polyvinyl chloride, silicone, polyurethane, polyamide elastomer, polyurethane elastomer, polyester elastomer, or any combination thereof (blended resin, polymer alloy, laminate, etc.) can be used. can.

As shown in FIG. 1, the first connecting portion 172a is arranged near one end portion 173a in the longitudinal direction of the belt portion 171. Further, the first connecting portion 172a is arranged on the inner surface 171a of the belt portion 171. In FIGS. 1, 2, and 4, the longitudinal direction of the belt portion 171 is indicated by arrows X1-X2.

The second connecting portion 172b is arranged near the other end portion 173b in the longitudinal direction of the belt portion 171. Further, the second connecting portion 172b is arranged on the outer surface 171b of the belt portion 171.

The first connecting portion 172a and the second connecting portion 172b have a structure in which they can be connected and separated from each other. Each connecting portion 172a and 172b can be configured by, for example, a hook-and-loop fastener. In the present embodiment, the first connecting portion 172a is formed on the female side of the hook-and-loop fastener, and the second connecting portion 172b is formed on the male side of the hook-and-loop fastener.

When the hemostatic device 100 is attached to the patient's forearm A, the surgeon or the like makes the inner surface 171a side of the belt portion 171 to which the expansion member 110 is connected face the skin surface layer of the patient's forearm A. The portion 171 is wrapped around the patient's forearm A. With the belt portion 171 wrapped around the patient's forearm portion A, the surgeon or the like brings the connecting portions 172a and 172b arranged on the belt portion 171 into contact with each other to connect them. By connecting the connecting portions 172a and 172b to each other, the surgeon or the like can fix the hemostatic device 100 to the forearm portion A of the patient with the expansion member 110 arranged at the puncture site p.

The structure of each of the connecting portions 172a and 172b is not particularly limited as long as it is possible to maintain the state in which the hemostatic device 100 is attached to the forearm portion A of the patient. Each connecting portion 172a and 172b may be configured by, for example, other than a hook-and-loop fastener. Further, even when the connecting portions 172a and 172b are configured by the hook-and-loop fastener as in the present embodiment, the female side and the male side can be arbitrarily replaced. Further, the position where the connecting portions 172a and 172b are arranged in the belt portion 171 and the number of connecting portions are not particularly limited.

As shown in FIG. 2, the belt portion 171 is provided with a support portion 175. The support portion 175 has a holding member 175a arranged near the center of the belt portion 171 in the longitudinal direction, and a support plate 175b held between the holding member 175a and the belt portion 171.

The holding member 175a is connected to the outer surface 171b of the belt portion 171. The holding member 175a forms a gap portion between the belt portion 171 and the outer surface 171b so that the support plate 175b can be held. The support plate 175b includes a flat-shaped portion formed in at least a part of the support plate 175b in the longitudinal direction (vertical direction in FIG. 2) and a curved portion concavely curved toward the inner surface 171a side of the belt portion 171. Have. The support plate 175b can be made of, for example, a material harder than the belt portion 171. The specific cross-sectional shape and material of the support plate 175b are not particularly limited.

The support plate 175b suppresses the expansion member 110 from expanding in the direction away from the patient's forearm A when the expansion member 110 is expanded. Therefore, when the expansion member 110 is expanded, the hemostatic device 100 can concentrate the pressing force on the forearm portion A of the patient to which the expansion member 110 is fixed.

The belt portion 171 and the holding member 175a, and the support plate 175b have a marker portion 125 (see FIGS. 2 and 3) described later when the operator or the like visually observes the expansion member 110 from the outer surface 171b side of the belt portion 171. It is preferably composed of transparent, translucent, colored transparent, etc. so that it can be visually recognized.

<Expansion member>
The expansion member 110 is composed of a balloon that is expanded by injecting a fluid. As shown in FIG. 3, the expansion member 110 has an internal space 113 into which a fluid can be injected.

The first surface 111a of the expansion member 110 is provided with a first region 120 and a second region 130, which will be described later (see FIG. 4). The first surface 111a of the expansion member 110 is the outer surface of the surface arranged on the puncture site p formed on the forearm portion A when the expansion member 110 is arranged on the forearm portion A of the patient.

As shown in FIGS. 2 and 3, an auxiliary member 180 having a smaller outer shape than the expansion member 110 and being deformable is connected to the second surface 111b of the expansion member 110. The auxiliary member 180 is composed of a balloon that is expanded by injecting a fluid. The second surface 111b of the expansion member 110 is the outer surface of the surface located on the opposite side of the first surface 111a.

The auxiliary member 180 has an internal space 181 into which a fluid can be injected. The first surface 181a located on the expansion member 110 side of the auxiliary member 180 is connected to the second surface 111b of the expansion member 110. The second surface 181b located on the side opposite to the first surface 181a of the auxiliary member 180 is connected to the inner surface 171a of the belt portion 171.

As shown in FIG. 2, for example, the auxiliary member 180 can be arranged at an arbitrary position near the other end portion 173b in the longitudinal direction of the belt portion 171. The auxiliary member 180 is connected to the belt portion 171 near the end portion (the right end portion in FIG. 3) of the auxiliary member 180.

As shown in FIG. 3, the internal space 113 of the expansion member 110 and the internal space 183 of the auxiliary member 180 communicate with each other via the communication portion 190. The communication portion 190 is composed of a hole portion formed in the expansion member 110 and a hole portion formed in the auxiliary member 180.

The expansion member 110 is connected to the auxiliary member 180 around the communication portion 190. Further, the auxiliary member 180 is connected to the belt portion 171 as described above. Therefore, the expansion member 110 is connected to the belt portion 171 via the auxiliary member 180. Each of the auxiliary member 180 and the belt portion 171 and the expansion member 110 and the auxiliary member 180 can be connected by, for example, fusion splicing or an adhesive.

In the expansion member 110 and the auxiliary member 180, for example, the outer peripheral edges of the two sheet-shaped members are formed in a state where the internal spaces 113 and 183 are formed between the two sheet-shaped members formed in a substantially rectangular shape. It can be formed by joining. In the present embodiment, the first surface 111a of the expansion member 110 is composed of a sheet-like member having a rectangle as shown in FIG. The specific shape and structure of the expansion member 110 and the auxiliary member 180 are not particularly limited as long as they are configured to be expandable and contractible with the injection and discharge of the fluid.

As the constituent materials of the expansion member 110 and the auxiliary member 180, for example, the same materials as those exemplified as the material of the belt portion 171 can be used.

The expansion member 110 and the auxiliary member 180 can be formed, for example, in a substantially rectangular shape in a plan view. However, the specific outer shape of the expansion member 110 and the auxiliary member 180 is not particularly limited.

The internal space 113 of the expansion member 110 communicates with the lumen of the tube 203 provided in the injection portion 200 (see FIG. 1) described later. The tube 203 may be connected to the internal space 183 of the auxiliary member 180.

The expansion member 110 and the auxiliary member 180 can be expanded by the operator or the like injecting a fluid (for example, air) into the internal space 113 of the expansion member 110 through the tube 203.

The surgeon or the like can apply a compressive force to the puncture site p by expanding the expansion member 110 while the hemostatic device 100 is attached to the patient's forearm A (see FIG. 7). Further, when the operator or the like expands the auxiliary member 180 together with the expansion member 110, the direction of the compression force applied by the expansion member 110 by the auxiliary member 180 can be adjusted in the direction toward the puncture site p. Therefore, the surgeon or the like can effectively apply a pressing force to the puncture site p from the expansion member 110.

The hemostatic device 100 does not have to include the auxiliary member 180. Further, even when the hemostatic device 100 includes the auxiliary member 180, the auxiliary member 180 can be composed of, for example, a member other than the expandable and deformable balloon.

<Injection part>
As shown in FIG. 1, the hemostatic device 100 has an injection unit 200 for injecting a fluid into the expansion member 110.

The injection unit 200 communicates the connector 201 with a built-in check valve (not shown), the flexible bag portion 202 having a space formed inside, and the internal space 113 of the bag portion 202 and the expansion member 110. It has a tube 203 and a tube 203.

While the check valve of the connector 201 is closed, the communication between the inside of the connector 201 and the inside of the bag portion 202 is cut off. When expanding the expansion member 110, the operator or the like inserts the tip cylinder portion of a syringe (not shown) into the connector 201 to open the check valve. The surgeon or the like can inject the air in the syringe into the internal space 113 of the expansion member 110 by pushing the pusher of the syringe with the check valve of the connector 201 open.

The operator or the like can expand the expansion member 110 by injecting air into the internal space 113 of the expansion member 110. Further, when an operator or the like injects air into the internal space 113 of the expansion member 110, the air flows into the internal space 183 of the auxiliary member 180 via the communication portion 190. As a result, the operator or the like can expand the auxiliary member 180. When the operator or the like expands the expansion member 110 and the auxiliary member 180, the bag portion 202 communicating with the expansion member 110 via the tube 203 expands. The operator or the like can confirm that the expansion member 110 and the auxiliary member 180 have expanded by visually confirming that the bag portion 202 expands.

When the expansion member 110 and the auxiliary member 180 are contracted, the operator or the like inserts the tip cylinder portion of the syringe into the connector 201 and pulls the pusher of the syringe. The operator or the like can move air from the expansion member 110 and the auxiliary member 180 to the syringe by performing the above operation. When the operator or the like moves air from the expansion member 110 and the auxiliary member 180 to the syringe, the bag portion 202 contracts.

For example, the bag portion 202 may be provided with an arrow-shaped marker indicating the direction in which the syringe is inserted into the connector 201.

<First region and second region of expansion member>
As shown in FIGS. 3 and 4, the expansion member 110 has a first region 120 and a second region 130 having a higher hydrophilicity than the first region 120. FIG. 4 is a plan view of the first surface 111a of the expansion member 110 and the inner surface 171a of the belt portion 171 as viewed from the direction of arrow 4A in FIG.

The first region 120 and the second region 130 are provided on the first surface 111a of the expansion member 110.

As shown in FIGS. 5 and 6, the second region 130 is composed of a groove 140 recessed on the outer surface side (the direction away from the puncture site p and the lower side in FIGS. 5 and 6) from the first region 120. doing. 5 is a cross-sectional view taken along the line 5A-5A shown in FIG. 4, and FIG. 6 is a cross-sectional view taken along the line 6A-6A shown in FIG.

The groove 140 includes a hydrophilic coat layer 163 provided on the surface of the groove 140.

The groove portion 140 can be formed, for example, as shown in FIGS. 5 and 6, having a concavely curved cross-sectional shape. The cross-sectional shape of the groove portion 140 is preferably a semicircular shape and a U-shape as shown in FIGS. 5 and 6. Thereby, the groove 140 can reduce the retention of blood in the groove 140. However, there is no particular limitation on the cross-sectional shape (for example, depth and width) of the groove 140. For example, the guide portion 143 of the groove portion 140, which will be described later, may not have the same cross-sectional shape continuously formed up to the peripheral edge portion 115 of the first surface 111a. As an example, the guide portion 143 may have a smaller depth or a narrower width as it approaches the peripheral edge portion 115 of the first surface 111a from the surrounding portion 141.

As shown in FIGS. 5 and 6, a water-repellent coat layer 162 is arranged in the first region 120. In the cross sections shown in FIGS. 2 and 3, the hydrophilic coat layer 163 and the water-repellent coat layer 162 are not shown.

As shown in FIG. 4, the groove 140 extends from the surrounding portion 141 toward the surrounding portion 141 surrounding at least a part of the first region 120 and toward the peripheral portion 115 of the first surface 111a arranged at the puncture site p from the surrounding portion 141. It has an induction unit 143 and.

As shown in FIGS. 4 and 5, the surrounding portion 141 is a part 121 (hereinafter, referred to as “central portion”) of the first region 120 located at the center of the expansion member 110 on the first surface 111a of the expansion member 110. ). The center of the expansion member 110 is the center in the plan view shown in FIG.

As shown in FIGS. 4 and 5, the first region 120 includes a marker portion 125 for aligning the expansion member 110 with the puncture site p in the central portion 121 surrounded by the surrounding portion 141. In the present embodiment, the marker portion 125 is configured by coloring the water-repellent coat layer 162 arranged in the central portion 121.

The marker portion 125 can be formed, for example, by a rectangular marker in which the entire marker portion 125 is colored. However, the marker portion 125 may be composed of, for example, a transparent central portion and a colored linear frame portion surrounding the central portion. The specific shape, color, forming method, etc. of the marker portion 125 are not particularly limited. For example, the marker portion 125 may be configured by directly coloring the central portion 121.

The guide portion 143 has a plurality of guide portions (first guide portion 143a and second guide portion 143b) extending from the surrounding portion 141 in a direction intersecting the longitudinal direction of the belt portion 171. Further, the second lead portion 143b extends in a direction different from that of the first guide portion 143a. As a result, since the hemostatic device 100 has a plurality of guiding portions 143a and 143b toward the outer side of the belt portion 171, the blood flowing into the guiding portion 143 toward the outer side of the belt portion 171 can be efficiently guided. Can be done. As shown in FIG. 4, the guide portion 143 is orthogonal to the plurality of first guide portions 143a extending from the surrounding portion 141 toward the corner portion 117 side of the expansion member 110 with respect to the longitudinal direction of the belt portion 171 from the surrounding portion 141. It has a plurality of second guide portions 143b extending in a direction (short side direction of the first surface 111a). The corner portion 117 is each apex of the rectangle when the first surface 111a shown in FIG. 4 has a rectangular planar shape.

In the present embodiment, the guide portion 143 has four first guide portions 143a extending continuously and linearly from the surrounding portion 141 toward the four corners of the first surface 111a of the expansion member 110. Further, the guide portion 143 has two second guide portions 143b extending continuously and linearly along a direction orthogonal to the longitudinal direction of the belt portion 171. The number of the guide portions 143a and 143b, the extending direction, and the extending pattern (shape such as a straight line or a curved line) are not particularly limited.

The hydrophilic coat layer 163 can be formed by a known material and a known method. As an example, the hydrophilic coat layer 163 may be formed of an acrylamide polymer substance (for example, a block copolymer of polyacrylamide, polyglycidyl methacrylate-dimethylacrylamide (PGMA-DMAA)), polyvinylpyrrolidone, hyaluronic acid, or the like. can. The hydrophilic coat layer 163 may be provided in at least a part of the second region 130 (groove 140). Further, the thickness of the hydrophilic coat layer 163 is not particularly limited.

The water-repellent coat layer 162 can be formed by a known material and a known method. As an example, the water-repellent coat layer 162 can be formed of silicone, polytetrafluoroethylene (PTFE), or the like. The water-repellent coat layer 162 may be provided in at least a part of the first region 120. Further, the thickness of the water-repellent coat layer 162 is not particularly limited.

FIG. 7 shows a state in which the hemostatic device 100 is attached to the forearm A of the patient who has formed the puncture site p.

Although the introduction is not shown in FIG. 7, the operator or the like can arrange the expansion member 110 at the puncture site p with the sheath tube of the introducer inserted at the puncture site p. In addition, the surgeon or the like can remove the sheath tube from the puncture site p with the hemostatic device 100 attached to the patient's forearm A.

When arranging the expansion member 110 at the puncture site p, the surgeon or the like aligns the central portion 121 with the puncture site p with reference to the marker portion 125 arranged at the central portion 121 of the first region 120. Thereby, the operator or the like can easily arrange the central portion 121 of the first region 120 in which the groove portion 140 is not formed at the puncture site p.

The surgeon or the like removes the sheath tube from the puncture site p with the expansion member 110 placed at the puncture site p. At this time, bleeding may occur from the puncture site p depending on the condition of the puncture site p of the patient. In such a case, since bleeding occurs in a state where the first surface 111a of the expansion member 110 is in contact with the puncture site p, blood moves along the groove 140 of the second region 130 to the peripheral edge portion 115 of the expansion member 110. Since the hydrophilic coat layer 163 is arranged in the groove 140, the hemostatic device 100 can smoothly guide the blood flowing into the groove 140 toward the peripheral edge 115 of the first surface 111a.

In the present embodiment, the first guide portion 143a extends from the surrounding portion 141 toward the corner portion 117 of the expansion member 110, and the second guide portion 143b extends from the surrounding portion 141 to the belt portion 171 in the longitudinal direction. It extends in the direction orthogonal to it. Therefore, in the present embodiment, the blood in contact with the first surface 111a of the expansion member 110 is guided to a position adjacent to the expansion member 110 in the longitudinal direction of the belt portion 171 (the short side of the first surface 111a in a plan view). It can be prevented from being done. Therefore, even when the hemostatic device 100 is attached to the patient's forearm A and bleeds from the puncture site p, blood flows along the belt portion 171 wrapped around the patient's forearm A, causing the patient's body and the like to flow. It can be prevented from being contaminated. In the hemostatic device 100, the expansion member 110 swells in the direction away from the patient's forearm A due to the expansion of the expansion member 110, so that blood is collected from the end of the first induction portion 143a and the end of the second induction portion b. Is efficiently guided to the outside of the expansion member 110 via.

Further, in the present embodiment, since the water-repellent coat layer 162 is provided in the first region 120, the blood in contact with the first region 120 can be easily moved from the first region 120 to the second region 130. can. Therefore, it is possible to prevent the visibility of the first region 120 of the expansion member 110 from being lowered. In particular, in the present embodiment, since the portion (central portion 121) provided with the marker portion 125 for aligning the expansion member 110 with the puncture site p is formed in the first region 120, the central portion 121 It is possible to prevent the visibility from being lowered and making it difficult for the operator or the like to visually recognize the marker portion 125.

As described above, the hemostatic device 100 according to the present embodiment is configured to have the expansion member 110 configured to be arranged on the forearm portion A of the patient and the expansion member 110 to be fixed to the forearm portion A of the patient. It includes a fixing member 170. The expansion member 110 has a first region 120 and a second region 130 having a higher hydrophilicity than the first region 120 on the first surface 111a arranged at the puncture site p. The second region 130 is a groove portion 140 recessed on the outer surface side of the first region 120.

According to the hemostatic device 100 configured as described above, the expansion member 110 is arranged at the puncture site p, and the hemostatic device 100 is attached to the patient's forearm A, and the medical long body (for example, a medical long body) from the puncture site p. , Even if bleeding occurs from the puncture site p when the introducer sheath tube) is removed, blood is guided to the peripheral edge 115 of the first surface 111a along the groove 140 provided with the hydrophilic coat layer 163. be able to. Therefore, the hemostatic device 100 can suppress the bleeding blood from staying between the first region 120 of the expansion member 110 and the skin surface around the puncture site p, and the first expansion member 110 arranged at the puncture site p. The visibility of one area 120 can be maintained. As a result, the hemostatic device is more convenient for the operator or the like to use.

Further, the first region 120 includes a water-repellent coat layer 162.

According to the hemostatic device 100 configured as described above, the water-repellent coat layer 162 arranged in the first region 120 smoothly moves the blood in contact with the first region 120 from the first region 120 to the second region 130. Can be made to. Therefore, the hemostatic device 100 effectively prevents the bleeding blood from staying between the first region 120 of the expansion member 110 and the skin surface around the puncture site p, and the visibility of the first region 120 is lowered. can do.

Further, the groove portion 140 extends from the surrounding portion 141 toward the surrounding portion 141 surrounding at least a part (for example, the central portion 121) of the first region 120 and the peripheral portion 115 of the first surface 111a arranged at the puncture site p from the surrounding portion 141. It has an existing guide portion 143 and.

The hemostatic device 100 configured as described above is configured such that a part of the first region 120 is surrounded by the surrounding portion 141. Therefore, the hemostatic device 100 can smoothly move the blood in contact with the first region 120 surrounded by the surrounding portion 141 to the peripheral portion 115 of the first surface 111a via the surrounding portion 141 and the guiding portion 143. ..

Further, the surrounding portion 141 surrounds the central portion 121 of the first region 120 located at the center of the expansion member 110 on the first surface 111a arranged at the puncture site p.

According to the hemostatic device 100 configured as described above, the blood in contact with the central portion 121 of the first region 120 located at the center of the expansion member 110 is passed through the surrounding portion 141 and the guiding portion 143 on the first surface 111a. Can be smoothly moved to the peripheral portion 115 of the. Therefore, it is possible to effectively prevent the visibility of the central portion 121 of the first region 120 from being lowered.

Further, the first region 120 includes a marker portion 125 for aligning with the puncture site p in the central portion 121 surrounded by the surrounding portion 141.

In the hemostatic device 100 configured as described above, since the surrounding portion 141 surrounds the central portion 121 having the marker portion 125, bleeding blood stays around the marker portion 125, and the visibility around the puncture site is reduced. To prevent. Therefore, the convenience of the hemostatic device 100 is further improved.

Further, the fixing member 170 has a belt portion 171 configured to be wound around the patient's forearm portion A. The guide portion 143 has a first guide portion 143a and a second guide portion 143b extending from the surrounding portion 141 in a direction intersecting the longitudinal direction of the belt portion 171. The second lead portion 143b extends in a direction different from that of the first guide portion 143a.

In the hemostatic device 100 configured as described above, the blood in contact with the first surface 111a of the expansion member 110 passes through the plurality of induction portions (first induction portion 143a and second induction portion 143b) of the belt portion 171. It is configured to be efficiently guided in the lateral direction (the direction in which the patient's forearm A extends). Therefore, even when blood leaks from the puncture site p while the hemostatic device 100 is attached to the patient's forearm A, blood flows along the belt portion 171 wrapped around the patient's forearm A, and the patient's body Etc. can be prevented from being contaminated.

Further, the guide portion 143 includes a first guide portion 143a extending from the surrounding portion 141 toward the corner portion 117 of the first surface 111a, and a second guiding portion 143 extending from the surrounding portion 141 in a direction orthogonal to the longitudinal direction of the belt portion 171. It has an induction unit 143b and.

According to the hemostatic device 100 configured as described above, the first guide portion 143a and the second guide portion 143b can be configured not to intersect each other on the first surface 111a of the expansion member 110. As a result, in the hemostatic device 100, the blood in contact with the first surface 111a of the expansion member 110 passes through the first guide portion 143a and the second guide portion 143b in the lateral direction of the belt portion 171 (of the patient's forearm portion A). It is configured to be guided more efficiently in the extending direction). Therefore, the hemostatic device 100 can prevent the blood that has come into contact with the first surface 111a of the expansion member 110 from being guided to a position adjacent to the expansion member 110 in the longitudinal direction of the belt portion 171. Therefore, even when blood leaks from the puncture site p while the hemostatic device 100 is attached to the patient's forearm A, blood flows along the belt portion 171 wrapped around the patient's forearm A, and the patient's body Etc. can be prevented from being contaminated.

Next, each modification of the above-described embodiment will be described. In the description of the modified example, the description of the content that overlaps with the content already described in the above-described embodiment will be omitted. In addition, the contents not particularly explained in the description of the modified example can be the same as those in the above-described embodiment.

(Modification example 1 of the second region (groove))
In the second region 130A according to the first modification shown in FIG. 8, the guide portion 143 extends substantially parallel to the longitudinal direction of the belt portion 171 in addition to the first guide portion 143a and the second guide portion 143b. A unit 143c is provided. The second region 130A configured in this way, like the second region 130 according to the above-described embodiment, allows blood in contact with the first region 120 to pass through the groove 140 of the second region 130 on the first surface 111a. It can be suitably guided to the peripheral edge portion 115.

(Modification example 2 of the second region (groove))
The second region 130B according to the second modification shown in FIG. 9 has a plurality of fourth guide portions 143d and 145e in which the guide portions 143 extend so as to be orthogonal to each other on the first surface 111a.

As shown in this modification, the groove portion 140 of the second region 130B can be arranged on the first surface 111a in a grid pattern. The modified example 2 is configured such that the groove portions 140 are arranged on the first surface 111a in a grid pattern so that the area ratio of the second region 130 on the first surface 111a is larger than that of the modified example 1. .. Therefore, blood can be more effectively guided to the peripheral portion 115 of the first surface 111a. The area of the first region on the first surface is preferably larger than the area of the second region on the first surface from the viewpoint of sufficiently ensuring the visibility of the expansion member.

As shown in FIG. 9, each of the guiding portions 143d and 143e orthogonal to the surrounding portion 141 can be formed to have a larger width and depth than the other guiding portions, for example. With this configuration, the blood that has flowed into the surrounding portion 141 can be efficiently moved toward the peripheral portion 115 of the first surface 111a.

As described in the first and second modifications, the pattern of forming the second region 130 (groove 140) on the first surface 111a of the expansion member 110 allows blood in contact with the first surface 111a to pass through the second region 130. As long as it can be moved to the peripheral edge portion 115 of the first surface 111a, it is not particularly limited.

Although the hemostatic device according to the present invention has been described above through the embodiments and modifications, the present invention is not limited to the contents described in the specification, and may be appropriately modified based on the description of the claims. Is possible.

As long as the hemostatic device has a configuration including an expansion member (for example, a balloon) including a first region and a second region, the limb to be hemostatic target, a specific hemostatic method, and the like are not particularly limited. In the description of the embodiment, a hemostatic device for stopping bleeding at the puncture site formed on the right forearm of the patient is illustrated, but the hemostatic device can also be configured so that the puncture site formed on the left forearm can be stopped. be. In addition, the hemostatic device is the radial artery side of the palmar artery (deep palmar artery) that runs on the back of the hand or the palm side of the hand located on the finger side of the patient's forearm (for example, the artery around the anatomical snuff box). Alternatively, the puncture site formed in the distal radial artery (the distal radial artery running on the fingertip side of the snuff box) may be configured to be able to stop bleeding.

In addition, regarding the shape, dimensions, structure, etc. of each part of the hemostatic device, it is possible to apply a compressive force to the puncture site by the expansion member while the hemostatic device is attached to at least a part of the limb including the forearm and the hand. As much as possible, there is no particular limitation.

100 Hemostasis device 110 Expansion member 111a First surface of expansion member 111b Second surface of expansion member 113 Internal space of expansion member 115 Peripheral part of first surface 117 Corner of first surface 120 First region 121 Center of first region Part (part of the first area)
125 Marker part 130, 130A, 130B Second region 140 Groove part 141 Surrounding part 143 Induction part 143a First induction part 143b Second induction part 143c Third induction part 143d, 143e Fourth induction part 162 Water-repellent coat layer 163 Hydrophilic coat Layer 170 Fixing member 171 Belt part 180 Auxiliary member 200 Injection part A Forearm part (limb)
p Puncture site (site to stop bleeding)

Claims (8)

An expansion member configured to be placed at the site of the limb to stop bleeding,
A fixing member configured to fix the expansion member to the limb is provided.
The expansion member has a first region and a second region having a higher hydrophilicity than the first region on the surface to be arranged at the site to be hemostasis.
The second region is a groove portion that is recessed on the outer surface side of the first region.
The groove is a hemostatic device provided with a hydrophilic coat layer. The hemostatic device according to claim 1, wherein the first region includes a water-repellent coat layer. The groove portion has a surrounding portion that surrounds at least a part of the first region, and a guiding portion that extends from the surrounding portion toward the peripheral portion of the surface that is arranged at the site to be hemostasis. 1 or the hemostatic device according to claim 2. The hemostatic device according to claim 3, wherein the surrounding portion surrounds a part of the first region located at the center of the expansion member on the surface arranged at the site to be hemostatic. The hemostatic device according to claim 4, wherein the first region includes a marker portion for aligning with the site to be hemostatic in a portion surrounded by the surrounding portion. The fixing member has a belt portion configured to be wrapped around the limb.
The guide portion has a first guide portion and a second guide portion extending from the surrounding portion in a direction intersecting the longitudinal direction of the belt portion.
The hemostatic device according to any one of claims 3 to 5, wherein the second lead portion extends in a direction different from that of the first guide portion. The guide portion extends in a direction orthogonal to the longitudinal direction of the belt portion from the first guide portion extending from the surrounding portion toward the corner of the surface arranged at the site to be hemostasis. The hemostatic device according to claim 6, further comprising the second induction portion. The hemostatic device according to any one of claims 3 to 5, wherein the guide portion extends in a grid pattern on the surface arranged at the site to be hemostatic.

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