Patent Description:
The present invention relates to a hemostatic device according to the preamble of claim <NUM>, such as it is e.g. known <CIT> or <CIT>. Furthermore, <CIT>, which constitutes prior art under Art. <NUM>(<NUM>) EPC, discloses
a hemostatic device comprising:.

Recently, percutaneous treatment/examination, etc. has been performed by puncturing a blood vessel of an arm, a leg, etc., introducing an introducer sheath to a puncture site, and delivering a medical instrument such as a catheter to a lesion through a lumen of the introducer sheath. When such treatment/examination, etc. is performed, an operator needs to perform hemostasis in the puncture site after withdrawing the introducer sheath. To perform hemostasis, there has been a known hemostatic device including a band for wrapping around a limb such as an arm, a leg, etc., means for securing that secures the band in a state of being wrapping around the limb, and an inflatable portion connected to the band to press the puncture site by inflating in response to injection of a fluid.

As described in PTL <NUM>, when a hemostatic device is used, in general, a doctor or a nurse connects a dedicated instrument such as a syringe separate from the hemostatic device to a port communicating with an inflatable portion of the hemostatic device and injects a fluid into the inflatable portion using the dedicated instrument, thereby inflating the inflatable portion of the hemostatic device.

In a treatment using the hemostatic device, when the inflating inflatable portion continues to strongly press the puncture site and a surrounding blood vessel or nerve for a long time, there is a possibility of causing numbness or pain or occluding the blood vessel.

For example, in the case of using the hemostatic device described in PTL <NUM>, to prevent vascular occlusion, etc., the doctor or the nurse regularly connects the dedicated instrument such as the syringe to the hemostatic device after inflating the inflatable portion, and discharges a fluid in the inflatable portion. In this way, a pressing force acting on the puncture site is reduced over time by performing a decompression operation of reducing an internal pressure of the inflatable portion.

However, the decompression operation of the hemostatic device of PTL <NUM> requires an operation of regularly connecting the dedicated instrument such as the syringe to the hemostatic device, and thus may increase an effort of the doctor or the nurse. In addition, when the dedicated instrument is lost, there is a possibility of occurrence of a situation in which the decompression operation of the inflatable portion of the hemostatic device may not be performed.

The invention has been made to solve the above-mentioned problems, and an object of the invention is to provide a hemostatic device capable of performing decompression adjustment of an inflatable portion by a simple operation without using a dedicated instrument separate from the hemostatic device.

A hemostatic device that achieves the object is a hemostatic device according to claim <NUM>.

In the hemostatic device, the tube body is configured to be movable relative to the cover portion, and it is possible to adjust the positional relationship between the hole portion of the tube body and the communication portion of the cover portion. When the communication portion and the hole portion are adjusted to overlapping positions, the communication portion allows communication between the lumen of the inflatable portion and the outside to discharge gas in the inflatable portion to the outside. In addition, in a state in which the positions of the communication portion and the hole portion do not overlap each other, the cover portion seals the hole portion by the cover portion to prevent gas from being discharged from the inflatable portion. As described above, according to the invention, it is possible to provide the hemostatic device capable of performing decompression adjustment of the inflatable portion by a simple operation of relatively moving the tube body with respect to the cover portion.

Hereinafter, an embodiment and modifications thereof of the invention will be described with reference to accompanying drawings. Note that a description below does not restrict a technical scope or a meaning of a term described in claims. In addition, a ratio of dimensions in the drawings is exaggerated for convenience of description and may be different from an actual ratio.

A hemostatic device <NUM> according to the present embodiment will be described with reference to <FIG>. <FIG> are diagrams for description of each portion of the hemostatic device <NUM>. <FIG> are diagrams for description of a use example of the hemostatic device <NUM>.

As illustrated in <FIG>, to insert a catheter, etc. for performing treatment/examination, etc. into a blood vessel, after withdrawing an introducer sheath indwelled in a puncture site P (corresponding to a "site where bleeding is to be stopped") formed in a radial artery R of a wrist W (corresponding to a "limb") , the hemostatic device <NUM> according to the embodiment is used to stop bleeding in the puncture site P.

As illustrated in <FIG> and <FIG>, the hemostatic device <NUM> includes a band <NUM> for wrapping around the wrist W, a surface fastener <NUM> (corresponding to "means for securing (securing member) ") that secures the band <NUM> in a state of being wrapped around the wrist W, an inflatable portion <NUM> inflated by being injected with air (corresponding to "gas") to press the puncture site P, an auxiliary pressing portion <NUM> provided between the inflatable portion <NUM> and the band <NUM>, a marker 40c for positioning the inflatable portion <NUM> at the puncture site P, an injection part <NUM> capable of injecting air into the inflatable portion <NUM>, and a tube body <NUM> that connects an inflatable space (lumen) 40a of the inflatable portion <NUM> to an outside (outside of the inflatable space 40a).

Note that in the present specification, when the band <NUM> is wrapped around the wrist W, a surface (mounting surface) on a side facing a body surface of the wrist W is referred to as an "inner surface" (corresponding to a "first surface"), and a surface on an opposite side is referred to as an "outer surface" (corresponding to a "second surface").

The band <NUM> includes a belt <NUM> made of a belt-shaped member having flexibility, and a support plate <NUM> having higher hardness than that of the belt <NUM>.

As illustrated in <FIG> and <FIG>, the belt <NUM> is wrapped around an outer periphery of the wrist W substantially once. As illustrated in <FIG>, a support plate holding portion 21a that holds the support plate <NUM> is formed at a central portion of the belt <NUM>. The support plate holding portion 21a is doubled by separate belt-shaped members joined to an outer surface side (or inner surface side) using a method such as welding (heat-welding, high-frequency welding, ultrasound welding, etc.) or adhesion (adhesion by an adhesive or a solvent) and holds the support plate <NUM> inserted into a gap therebetween.

A male side (or a female side) <NUM> of the surface fastener <NUM> is disposed on an outer surface side of a portion of the belt <NUM> near a left end of <FIG>, and a female side (or a male side) <NUM> of the surface fastener <NUM> is disposed on an inner surface side of a portion of the belt <NUM> near a right end of <FIG>. For example, the surface fastener <NUM> is a hook and loop fastener known as a general product such as VELCRO (registered trademark) or Magic tape (registered trademark) in Japan. As illustrated in <FIG>, the belt <NUM> is wrapped around the wrist W, and the male side <NUM> and the female side <NUM> are joined together, thereby mounting the band <NUM> on the wrist W. Note that means for securing the band <NUM> to the wrist W in a wrapped state is not limited to the surface fastener <NUM>. For example, it is possible to use a securing member such as a snap, a button, a clip, or a frame member passing the end portion of the belt <NUM>.

A constituent material of the belt <NUM> is not particularly limited as long as the material has flexibility. Examples of such a material include polyvinyl chloride, polyolefins such as polyethylene, polypropylene, polybutadiene and ethylene-vinyl acetate copolymers (EVA), polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyvinylidene chloride, silicone, polyurethane, various thermoplastic elastomers such as polyamide elastomers, polyurethane elastomers and polyester elastomers, and an arbitrary combination of the above (blend resin, polymer alloy, laminate, etc.).

In addition, at least a part of the belt <NUM> overlapping with the inflatable portion <NUM> is preferably substantially transparent. However, the part may not be transparent, and may be translucent or colored transparent. In this way, the puncture site P may be visually recognized from the outer surface side, and the marker 40c described below may be easily positioned at the puncture site P.

As illustrated in <FIG>, the support plate <NUM> is held in the belt <NUM> by being inserted into the doubly formed support plate holding portion 21a of the belt <NUM>. At least a part of the support plate <NUM> has a plate shape curved toward the inner surface side (mounting surface side). The support plate <NUM> is made of a harder material than that of the belt <NUM> and is designed to maintain a substantially constant shape. However, a method of disposing the support plate <NUM> on the belt <NUM> is not limited to an illustrated configuration, and it is possible to include joining the support plate <NUM> to the inner surface or the outer surface of the band <NUM> using an appropriate method such as welding or adhesion. Similarly, another acceptable configuration is a configuration in which the belt <NUM> is connected to both end portions of the support plate <NUM>. For this reason, it is not always necessary that the entire support plate <NUM> overlaps the belt <NUM>.

The support plate <NUM> has a shape elongated in a longitudinal direction of the belt <NUM>. A central portion 22a in a longitudinal direction of the support plate <NUM> is formed in a flat plate shape with little curvature. A first curved portion 22b (left side of <FIG>) and a second curved portion 22c (right side of <FIG>) curved toward an inner circumference side and along the longitudinal direction of the belt <NUM> (circumferential direction of the wrist W) are formed on both sides of the central portion 22a, respectively.

A constituent material of the support plate <NUM> include acrylic resins, polyvinyl chloride (particularly rigid polyvinyl chloride), polyolefins such as polyethylene, polypropylene and polybutadiene, polystyrene, poly(<NUM>-methyl pentene-<NUM>), polycarbonates, ABS resins, polymethyl methacrylate (PMMA) , polyacetals, polyarylates, polyacrylonitriles, polyvinylidene fluorides, ionomers, acrylonitrile-butadiene-styrene copolymers, polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), butadiene-styrene copolymers, aromatic or aliphatic polyamides, and fluorocarbon resins such as polytetrafluoroethylene.

It is preferable that a part of the support plate <NUM> overlapping the inflatable portion <NUM> is substantially transparent similar to the belt <NUM>. However, the part may not be transparent, and may be translucent or colored transparent. In this way, the puncture site P may be reliably visually recognized from the outer surface side, and the marker 40c described below may be easily positioned at the puncture site P. Note that the support plate <NUM> may not have a non-curved portion as the central portion 22a, and may be curved over an entire length thereof.

The inflatable portion <NUM> has a function of inflating by being injected with air to apply a pressing force to the puncture site P. In the present embodiment, as illustrated in <FIG> and <FIG>, the inflatable portion <NUM> is formed of a bag-shaped member obtained by superimposing two substantially rectangular sheets and bonding or welding circumferences. In this way, the inflatable space 40a is formed between the two sheets. Note that a configuration of the inflatable portion <NUM> is not particularly limited as long as the inflatable portion <NUM> can be inflated by being injected with air. For example, the inflatable portion <NUM> may be formed of a bag-shaped member obtained by folding one sheet and bonding or welding edge portions, or formed of a balloon-shaped member not having an edge portion. In addition, an external shape of the inflatable portion <NUM> is not particularly limited. For example, the inflatable portion <NUM> may have an external shape such as a circle, an ellipse, or a polygon in plan view in a non-inflated state.

As illustrated in <FIG>, the inflatable portion <NUM> is disposed to overlap a vicinity of a portion between the first curved portion 22b and the central portion 22a of the support plate <NUM>. For this reason, as illustrated in <FIG>, when the inflatable portion <NUM> is inflated, inflation of the inflatable portion <NUM> in a direction away from the body surface of the wrist W is suppressed by the belt <NUM> and the support plate <NUM>, and a pressing force of the inflatable portion <NUM> is concentrated on the wrist W side. For this reason, it is possible to suitably press the puncture site P.

The inflatable portion <NUM> has a connecting portion 40b connected to the cover portion <NUM> disposed on the tube body <NUM>. The inflatable portion <NUM> is connected to the cover portion <NUM> through the connecting portion 40b in a state in which a part of the cover portion <NUM> is inserted into the inflatable space 40a. In addition, the cover portion <NUM> is connected to the band <NUM> in a state of penetrating a through-hole 20a formed in the band <NUM>. A method of connecting the inflatable portion <NUM> to the cover portion <NUM> and a method of connecting the cover portion <NUM> to the band <NUM> are not particularly limited. For example, it is possible to adopt a method such as welding or adhesion using an adhesive. Note that for example, the inflatable portion <NUM> may be directly connected to the belt <NUM> of the band <NUM>.

A constituent material of the inflatable portion <NUM> is not particularly limited as long as the material has flexibility. For example, it is possible to use the same material as the constituent material of the band <NUM> described above.

It is preferable that the inflatable portion <NUM> is substantially transparent. However, the inflatable portion <NUM> may not be transparent, and may be translucent or colored transparent. In this way, it is possible to visually recognize the puncture site P from the outer surface side, and to easily position the marker 40c described below at the puncture site P.

As indicated by an arrow in <FIG>, the auxiliary pressing portion <NUM> has a function of pressing the inflatable portion <NUM> to adjust a direction of a pressing force applied to the puncture site P by the inflatable portion <NUM>.

Similar to the inflatable portion <NUM>, the auxiliary pressing portion <NUM> is formed of a bag-shaped member. Note that for example, the auxiliary pressing portion <NUM> may be made of a sponge-like substance, an elastic material, an aggregate of fibers such as cotton, a combination thereof, etc..

The auxiliary pressing portion <NUM> is attached to the inflatable portion <NUM> such that an internal space thereof communicates with the inflatable space 40a of the inflatable portion <NUM>. For this reason, when air is injected into the inflatable portion <NUM>, the auxiliary pressing portion <NUM> is inflated.

As illustrated in <FIG>, the marker 40c is provided at an approximate center of the inflatable portion <NUM> on a side facing the band <NUM>. When such a marker 40c is provided on the inflatable portion <NUM>, the inflatable portion <NUM> can be easily positioned with respect to the puncture site P, and thus position shift of the inflatable portion <NUM> is suppressed. Note that the marker 40c may be provided on a side of the inflatable portion <NUM> facing the wrist W. In this instance, it is preferable that the marker 40c is provided on the inner surface of the inflatable portion <NUM> so as not to directly come into contact with the puncture site P. Note that a position at which the marker 40c is provided is not particularly limited as long as the inflatable portion <NUM> can be positioned at the puncture site P. For example, the marker 40c may be provided on the belt <NUM> or the support plate <NUM> as long as the inflatable portion <NUM> can be positioned at the puncture site P.

A shape of the marker 40c is not particularly limited, and examples thereof include a circle, a triangle, a quadrangle, etc. In present embodiment, the shape corresponds to the quadrangle.

A size of the marker 40c is not particularly limited. For example, when the shape of the marker 40c corresponds to the quadrangle, it is preferable that a length of one side thereof is in a range of <NUM> to <NUM>. When the length of the one side is <NUM> or more, the size of the marker 40c increases with respect to a size of the puncture site P, and thus it is difficult to position a central portion of the inflatable portion <NUM> at the puncture site P.

A material of the marker 40c is not particularly limited. Examples thereof include an oily coloring agent such as ink, a resin kneaded with a pigment, etc..

A color of the marker 40c is not particularly limited when the color allows the inflatable portion <NUM> to be positioned at the puncture site P. However, a green-based color is preferable. When the green-based color is adopted, it is easy to visually recognize the marker 40c on blood or skin, and thus the inflatable portion <NUM> is more easily positioned at the puncture site P.

In addition, the marker 40c is preferably translucent or colored transparent. In this way, the puncture site P may be visually recognized from the outer surface side of the marker 40c.

A method of providing the marker 40c on the inflatable portion <NUM> is not particularly limited. Examples thereof include a method of printing the marker 40c on the inflatable portion <NUM>, a method of welding the marker 40c to the inflatable portion <NUM>, a method of applying an adhesive to one surface of the marker 40c to paste the marker 40c to the inflatable portion <NUM>, etc..

The injection part <NUM> is a part for injecting air into the inflatable portion <NUM> and is connected to the inflatable portion <NUM> as illustrated in <FIG>.

The injection part <NUM> is a tube <NUM> having flexibility, a proximal portion of the tube is connected to the inflatable portion <NUM> and a lumen of the tube communicates with the inflatable space 40a of the inflatable portion <NUM>, a bag body <NUM> disposed at a distal portion of the tube <NUM> to communicate with a lumen of the tube <NUM>, and a tube-shaped connector <NUM> incorporating a check valve (not illustrated) connected to the bag body <NUM>.

At the time of inflating (expanding) the inflatable portion <NUM>, a tip of a syringe (not illustrated) is inserted into the connector <NUM> to open the check valve, and a plunger of this syringe is pushed to inject air in the syringe into the inflatable portion <NUM> through the injection part <NUM>. When the inflatable portion <NUM> inflates, the bag body <NUM> communicating with the inflatable portion <NUM> through the tube <NUM> also inflates, and it is possible to visually confirm that the inflatable portion <NUM> can be pressed without leakage of air. When the tip of the syringe is withdrawn from the connector <NUM> after air is injected into the inflatable portion <NUM>, the check valve incorporated in the connector <NUM> is closed to prevent leakage of air.

Next, the tube body <NUM> and the cover portion <NUM> will be described with reference to respective drawings. Note that <FIG> illustrates a schematic perspective view of the tube body <NUM> and the cover portion <NUM>, and each of <FIG> and <FIG> illustrates a simplified plan view and cross-sectional view of the tube body <NUM> and the cover portion <NUM>.

As illustrated in <FIG>, the tube body <NUM> communicates between the inflatable space 40a in the inflatable portion <NUM> and the outside. In addition, as illustrated in <FIG> and <FIG>, the tube body <NUM> has a hole portion <NUM> opening in the inflatable portion <NUM>, a lumen <NUM> through which air can flow, a proximal end opening <NUM> disposed outside the inflatable portion <NUM>, a first member <NUM> included in a lock mechanism, and a grip portion <NUM> that can be gripped by fingers, etc..

As illustrated in <FIG> and <FIG>, the cover portion <NUM> is disposed to cover the tube body <NUM> in the inflatable portion <NUM>. In addition, the cover portion <NUM> is disposed to cover the hole portion <NUM> of the tube body <NUM>.

The cover portion <NUM> has a communication portion <NUM> positioned to overlap the hole portion <NUM> of the tube body <NUM> so that the hole portion <NUM> and the inflatable portion <NUM> can communicate with each other, a lumen <NUM> into which the tube body <NUM> is inserted, a proximal end opening <NUM> provided at a proximal side, a flange portion <NUM> disposed around the proximal end opening <NUM>, and a bottom face part <NUM> covering a distal portion of the tube body <NUM>.

Note that a specific shape of the cover portion <NUM> is not limited as long as the cover portion <NUM> has the communication portion <NUM> that can be positioned to overlap the hole portion <NUM> of the tube body <NUM>. For example, the cover portion <NUM> may be configured in a shape in which the bottom face part <NUM> covering the distal portion of the tube body <NUM> is not provided.

As illustrated in <FIG> and <FIG>, a distal side (lower side of <FIG>) of the tube body <NUM> is inserted into the lumen <NUM> of the cover portion <NUM>. The tube body <NUM> is configured to be rotatable with respect to the cover portion <NUM> in a state of being inserted into the lumen <NUM> of the cover portion <NUM>. The distal side of the tube body <NUM> inserted into the lumen of the cover portion <NUM> is formed in a substantially cylindrical shape. The lumen <NUM> of the cover portion <NUM> is formed in a substantially cylindrical shape so that the tube body <NUM> can be inserted.

The lumen <NUM> of the tube body <NUM> is formed along an extending direction (axial direction) of the tube body <NUM>. The hole portion <NUM> is formed at the distal side (lower side of <FIG>) of the tube body <NUM>, and opens toward the outer surface of the tube body <NUM> so as to be orthogonal to the lumen <NUM> of the tube body <NUM>.

It is preferable that an inner diameter of the cover portion <NUM> (diameter of the lumen <NUM>) is the same as an outer diameter of the tube body <NUM> or smaller than the outer diameter of the tube body <NUM> so that the tube body <NUM> is rotatable and an excessive clearance is not formed between the outer surface of the tube body <NUM> and an outer surface of the cover portion <NUM>.

A rotation range of the tube body <NUM> (a distance in which rotation is allowed in a circumferential direction with respect to the cover portion <NUM>) may be arbitrarily set and is not particularly limited. For example, as illustrated in <FIG>, the rotation range of the tube body <NUM> may be formed to be able to maintain a distance between the hole portion <NUM> and the communication portion <NUM> so that the communication portion <NUM> does not open in a state in which the hole portion <NUM> of the tube body <NUM> and the communication portion <NUM> of the cover portion <NUM> do not overlap each other.

In addition, as illustrated in <FIG> and <FIG>, a valve body <NUM> is disposed on the flange portion <NUM> of the tube body <NUM>. The valve body <NUM> has a slit <NUM> through which the tube body <NUM> can be inserted. The valve body <NUM> prevents air from leaking from between the tube body <NUM> and the cover portion <NUM>. Note that shapes, structures, etc. of the valve body <NUM> and the slit <NUM> are not particularly limited as long as the tube body <NUM> can be inserted and leakage of air from the inflatable portion <NUM> can be prevented.

A lid member (support body) <NUM> is disposed on a proximal side of the cover portion <NUM>. The lid member <NUM> has an opening <NUM> through which the tube body <NUM> is inserted, second members 82a and 82b that restrict rotation of the tube body <NUM> in cooperation with the first member <NUM> formed on the tube body <NUM>, and a predetermined flange portion <NUM>.

As illustrated in <FIG>, the valve body <NUM> is interposed between the flange portion <NUM> of the cover portion <NUM> and the lid member <NUM>. In addition, the band <NUM> and the flange portion <NUM> of the lid member <NUM> are secured to each other. As illustrated in <FIG>, the tube body <NUM> is inserted into the lumen <NUM> of the cover portion <NUM> by being inserted through the opening <NUM> of the lid member <NUM>, the slit <NUM> of the valve body <NUM>, and the proximal end opening <NUM> of the cover portion <NUM>. In the present embodiment, the tube body <NUM>, the cover portion <NUM>, the lid member <NUM>, and the valve body <NUM> are included in a decompression adjustment mechanism 60A that enables an operation of discharging air from the inflatable portion <NUM> (see <FIG>).

It is preferable that a constituent material of the tube body <NUM> is a material having higher hardness than that of the cover portion <NUM>. Examples of such a material include a known metallic material, a plastic material, etc..

A constituent material of the cover portion <NUM> preferably corresponds to an elastic member. Examples of such a material include an elastomer material such as butyl rubber, polysulfide rubber, epichlorohydrin rubber, high nitrile rubber, fluororubber, or silicone rubber, various thermoplastic elastomer materials, etc..

A constituent material of the valve body <NUM> is not particularly limited, and examples thereof include silicone rubber, latex rubber, butyl rubber and isoprene rubber which are elastic members.

A constituent material of the lid member <NUM> is not particularly limited. For example, it is possible to use the same material as the constituent material of the band <NUM> described above. The flange portion <NUM> of the lid member <NUM> is secured to the band <NUM> or the flange portion <NUM> of the cover portion <NUM>. For example, the flange portion <NUM> of the lid member <NUM> is secured to the band <NUM> or the flange portion <NUM> of the cover portion <NUM> using a method such as welding or adhesion. Note that the valve body <NUM> is disposed between the lid member <NUM> and the flange portion <NUM> of the cover portion <NUM> by being interposed between the lid member <NUM> and the flange portion <NUM> of the cover portion <NUM>.

In the present embodiment, the communication portion <NUM> of the cover portion <NUM> is formed as a slit (cut) penetrating the cover portion <NUM> in a thickness direction. The slit is formed at a position overlapping the hole portion <NUM> in a cross section perpendicular to an axial center of the tube body <NUM> (cross section illustrated in <FIG>). In addition, one slit is formed in the cover portion <NUM> in a shape extending in a direction orthogonal to an extending direction (axial direction) of the cover portion <NUM>.

As described above, for example, the communication portion <NUM> is formed as the slit. However, as described below, in variations not falling under scope of the claims, the communication portion <NUM> may be configured such that it is possible to switch between communication between the inflatable space 40a of the inflatable portion <NUM> and the lumen <NUM> of the tube body <NUM> and blocking of the communication state, and is not limited to a form of the slit. For example, the communication portion <NUM> may be formed as a small hole having the same function as that of the slit. In addition, for example, the communication portion <NUM> may be formed as a plurality of slits, formed as a slit having a shape extending in a direction inclined with respect to the extending direction of the cover portion <NUM>, or formed as a plurality of slits intersecting and overlapping each other. A specific shape, structure, arrangement, etc. are not particularly limited. In addition, in a case in which the communication portion <NUM> is formed as the small hole, a specific shape, size, structure, arrangement, etc. are not similarly particularly limited, and it is possible to adopt the above exemplified configuration, etc..

In addition, in the present embodiment, the hole portion <NUM> included in the tube body <NUM> is formed in a circular shape in plan view. However, the shape of the hole portion <NUM> is not particularly limited as long as air can flow, and may correspond, for example, a rectangular shape, an elliptical shape, a trapezoidal shape, another polygonal shape, etc. in plan view.

Note that when the communication portion <NUM> of the cover portion <NUM> is formed as a slit, it is preferable that a length (length along a direction intersecting an axial direction of the cover portion <NUM>) of the slit is longer than a diameter of the hole portion <NUM>. According to such a configuration, when positions of the hole portion <NUM> and the communication portion <NUM> are superimposed with each other, the slit is more easily opened by an internal pressure of the inflatable portion <NUM>. For this reason, the hemostatic device <NUM> can more appropriately control a discharge amount of air.

The first member <NUM> of the tube body <NUM> and the respective second members 82a and 82b of the lid member <NUM> are included in a lock mechanism that restricts relative movement of the tube body <NUM> with respect to the cover portion <NUM>.

As illustrated in <FIG>, the first member <NUM> has two recesses corresponding to a first recess 64a and a second recess 64b. As illustrated in <FIG>, the first recess 64a is configured to be able to be engaged (secure) to the second member 82a of the lid member <NUM>. In addition, as illustrated in <FIG>, the second recess 64b is configured to be able to be engaged (secure) to the second member 82b of the lid member <NUM>. Rotation of the tube body <NUM> is restricted by engagement of the first recess 64a and the second member 82a and engagement of the second recess 64b and the second member 82b.

As described above, the lock mechanism restricts rotation of the tube body <NUM> by the first recess 64a and the second member 82a engaging each other at a position at which the hole portion <NUM> and the communication portion <NUM> do not overlap each other, and the second recess 64b and the second member 82b engaging each other at a position at which the hole portion <NUM> and the communication portion <NUM> overlap each other. For this reason, it is possible to easily check a situation in which the hole portion <NUM> is disposed at a position at which the inflatable portion <NUM> is decompressed or the hole portion <NUM> is disposed at a position at which the inflatable portion <NUM> is decompressed by a feeling of a finger touching the grip portion <NUM> of the tube body <NUM> at the time of operating the tube body <NUM>.

Note that a configuration of the lock mechanism is not particularly limited as long as rotation of the tube body <NUM> can be restricted. In variations not falling under the scope of the claims, a lock mechanism is not limited to a structure in which movement of the tube body <NUM> is restricted by mechanical connection (engagement contact) between members. For example, it is possible to adopt a structure in which rotation of the tube body <NUM> is restricted by a magnetic force, etc. In addition, for example, the lock mechanism may not be configured to restrict rotation of the tube body <NUM> at the position at which the hole portion <NUM> and the communication portion <NUM> do not overlap each other and at the position at which the hole portion <NUM> and the communication portion <NUM> overlap each other, but may be configured to restrict rotation at only one of the two positions. However, to prevent the inflatable portion <NUM> from being inadvertently decompressed, it is preferable that the lock mechanism is configured to restrict rotation of the tube body <NUM> at least at the position at which the hole portion <NUM> and the communication portion <NUM> do not overlap each other.

Next, a description will be given of a procedure example of a decompression operation of the inflatable portion <NUM> by the decompression adjustment mechanism 60A with reference to <FIG> and <FIG>.

<FIG> illustrate a state in which air is injected into the inflatable space 40a of the inflatable portion <NUM>. In this state, the hole portion <NUM> of the tube body <NUM> is not disposed at a position overlapping the communication portion <NUM> of the cover portion <NUM>. Since a pressure in the inflatable portion <NUM> is larger than a pressure in the lumen <NUM> of the tube body <NUM>, the communication portion <NUM> maintains a closed state due to a pressure difference.

As illustrated in <FIG>, when the tube body <NUM> is rotated to overlap positions of the hole portion <NUM> and the communication portion <NUM>, a slit forming the communication portion <NUM> is pressed toward the hole portion <NUM> side by the internal pressure of the inflatable portion <NUM> to open the slit. In this way, the communication portion <NUM> allows communication between the lumen <NUM> of the tube body <NUM> and the inflatable space 40a of the inflatable portion <NUM>. Air in the inflatable space 40a of the inflatable portion <NUM> is discharged to the outside via the lumen <NUM> of the tube body <NUM>. Since a discharge amount of air discharged from the inflatable portion <NUM> when the position of the hole portion <NUM> and the position of the communication portion <NUM> overlap each other is controlled based on a shape and a size (dimension) of the slit forming the communication portion <NUM>, it is possible to quantitatively control the discharge amount of air, and to appropriately discharge a desired amount of air.

When the decompression operation of the inflatable portion <NUM> is completed, the tube body <NUM> is rotated to adjust a positional relation between the hole portion <NUM> and the communication portion <NUM> so that the positions thereof do not overlap each other. In this way, the hemostatic device <NUM> may perform decompression adjustment of the inflatable portion <NUM> by a simple operation of rotating the tube body <NUM>. In addition, in the hemostatic device <NUM>, a mechanism (the hole portion <NUM> and the communication portion <NUM>) for switching between communication between the inflatable space 40a of the inflatable portion <NUM> and the lumen <NUM> of the tube body <NUM> and blocking of the communication state is disposed inside the inflatable portion <NUM>. Thus, it is possible to prevent a doctor, a patient, etc. from inadvertently touching the mechanism or the mechanism from being clogged with minute foreign matter, thus enhancing safety of a hemostatic treatment.

Next, a description will be given of a method of using the hemostatic device <NUM> according to the present embodiment.

Before the hemostatic device <NUM> is mounted on the wrist W, as illustrated in <FIG>, the inflatable portion <NUM> is in a state of not being inflated. As illustrated in <FIG>, when the radial artery R of the right hand wrist W is punctured, the puncture site P is at a position biased to a thumb side. Normally, the introducer sheath is indwelled in the puncture site P. The band <NUM> is wrapped around the wrist W in which the introducer sheath is indwelled, the inflatable portion <NUM> and the band <NUM> are positioned such that the marker 40c provided on the inflatable portion <NUM> overlaps the puncture site P, and the male side <NUM> and the female side <NUM> of the surface fastener <NUM> are brought into contact with each other and joined to each other, thereby mounting the band <NUM> on the wrist W.

In this instance, the hemostatic device <NUM> is mounted on the wrist W such that the injection part <NUM> faces the downstream side (palm side) of a blood flow of the radial artery R. In this way, the injection part <NUM> may be operated without interfering with manipulation on the upstream side of the wrist or a device (for example, a sphygmomanometer) located on the upstream side. In addition, when the hemostatic device <NUM> is mounted on the right hand wrist W such that the injection part <NUM> faces the downstream side, the inflatable portion <NUM> is located on the radial artery R biased to the thumb side of the wrist W. Note that in the case of the artery, the upstream side of the blood vessel refers to a direction of the blood vessel approaching a heart. In addition, the downstream side of the blood vessel refers to a direction of the blood vessel away from the heart.

Note that the hemostatic device <NUM> may be used for puncturing the radial artery of the left hand wrist. In this case, the injection part <NUM> is mounted on the left hand wrist to face the upstream side of the blood flow of the radial artery.

After the hemostatic device <NUM> is mounted on the wrist W, the syringe (not illustrated) is connected to the connector <NUM> of the injection part <NUM>, air is injected into the inflatable portion <NUM> as described above, and the inflatable portion <NUM> is inflated as illustrated in <FIG>.

A degree of inflation of the inflatable portion <NUM>, that is, a pressing force acting on the puncture site P may be easily adjusted depending on the case according to an injection amount of air at this time. For example, when air is excessively injected into the inflatable portion <NUM>, and thus the inflatable portion <NUM> is excessively inflated, excessively injected air may be discharged from the inside of the inflatable portion <NUM> using the syringe, or air may be discharged using the decompression adjustment mechanism 60A.

After the inflatable portion <NUM> is inflated, the syringe is detached from the connector <NUM>. Then, the introducer sheath is withdrawn from the puncture site P.

It is possible to adjust -the amount of air to the inflatable portion <NUM> and the auxiliary pressing portion <NUM> and adjust a pressing force applied to the puncture site P by the inflatable portion <NUM> by operating the decompression adjustment mechanism 60A according to a progressing state of hemostasis and an elapsed time after withdrawing the introducer sheath (see <FIG>). For example, when the inflated inflatable portion <NUM> continues to press the puncture site P and a surrounding blood vessel or nerve for a long time, there is the case of causing numbness or pain or occluding the blood vessel. In order to prevent vascular occlusion, etc., the pressing force acting on the puncture site P may be reduced over time by performing a decompression operation of discharging air in the inflatable portion <NUM> over time after inflation of the inflatable portion <NUM> to gradually decrease the internal pressure of the inflatable portion <NUM>. Since the decompression adjustment in the hemostatic device <NUM> can be performed by the decompression adjustment mechanism 60A, the doctor or a nurse may eliminate the need to carry the dedicated instrument (syringe, etc.) for performing the decompression adjustment.

Note that when hemostasis is insufficiently performed after inflation of the inflatable portion <NUM>, air may be injected into the inflatable portion <NUM> to raise the internal pressure of the inflatable portion <NUM>. For example, when it is desired to return the internal pressure of the inflatable portion <NUM> to the internal pressure at the time of injecting air into the inflatable portion <NUM>, air discharged from the inflatable portion <NUM> may be injected.

When a predetermined time elapses, and hemostasis of the puncture site P is completed, the hemostatic device <NUM> is removed from the wrist W. The hemostatic device <NUM> is removed from the wrist W by peeling off the male side <NUM> and the female side <NUM> of the surface fastener <NUM>.

As described above, the hemostatic device <NUM> according to the present embodiment includes the band <NUM> for wrapping around the puncture site P of the wrist W, the means for securing <NUM> that secures the band <NUM> in a state of being wrapped around the wrist W, the inflatable portion <NUM> connected to the band <NUM> and inflated by being injected with air, the tube body <NUM> that communicates between the inflatable space 40a in the inflatable portion <NUM> and the outside, and the cover portion <NUM> that covers the tube body <NUM> in the inflatable portion <NUM>. In addition, the tube body <NUM> has the hole portion <NUM> that opens inside the inflatable portion <NUM>, and the cover portion <NUM> has the communication portion <NUM> disposed to cover the hole portion <NUM> and positioned to overlap the hole portion <NUM> so that the hole portion <NUM> and the inflatable space 40a of the inflatable portion <NUM> can communicate with each other. The tube body <NUM> is movable relative to the cover portion <NUM> so that the positional relationship between the communication portion <NUM> and the hole portion <NUM> can be controlled.

In the hemostatic device <NUM>, the tube body <NUM> is configured to be movable relative to the cover portion <NUM>, and it is possible to adjust the positional relationship between the hole portion <NUM> of the tube body <NUM> and the communication portion <NUM> of the cover portion <NUM>. When the communication portion <NUM> and the hole portion <NUM> are adjusted to overlapping positions, the communication portion <NUM> allows communication between the inflatable space 40a of the inflatable portion <NUM> and the outside to discharge air in the inflatable portion <NUM> to the outside. In addition, in a state in which the positions of the communication portion <NUM> and the hole portion <NUM> do not overlap each other, the cover portion <NUM> seals the hole portion <NUM> by the cover portion <NUM> to prevent air from being discharged from the inflatable portion <NUM>. As described above, according to the present embodiment, it is possible to provide the hemostatic device <NUM> capable of performing decompression adjustment of the inflatable portion <NUM> by a simple operation of relatively moving the tube body <NUM> with respect to the cover portion <NUM>.

In addition, the tube body <NUM> is rotatable relative to the cover portion <NUM>. For this reason, it is possible to perform decompression adjustment of the inflatable portion <NUM> by a simple operation of rotating the tube body <NUM>.

In addition, the communication portion <NUM> is disposed at the same position as that of the hole portion <NUM> in a cross section perpendicular to the axial center of the tube body <NUM>. For this reason, it is possible to easily perform positioning such that the positions of the hole portion <NUM> and the communication portion <NUM> overlap each other by an operation of rotating the tube body <NUM>.

In addition, the hemostatic device <NUM> has the lock mechanism for restricting movement of the tube body <NUM> relative to the cover portion <NUM>. For this reason, it is possible to prevent the decompression operation from being unintentionally performed by inadvertent movement of the tube body <NUM>.

In addition, the lock mechanism includes the first member <NUM> disposed on the tube body <NUM> and the second members 82a and 82b provided on the lid member <NUM> disposed on the proximal side of the cover portion <NUM> and configured to be engaged with and separated from the first member <NUM>. For this reason, it is possible to prevent inadvertent movement of the tube body <NUM> by a simple operation of securing and separating the first member <NUM> and the second members 82a and 82b to and from each other.

In addition, the communication portion <NUM> is configured as the slit that opens at the time of being aligned with the hole portion <NUM>. For this reason, when the communication portion <NUM> and the hole portion <NUM> are adjusted to overlapping positions, the communication portion <NUM> can be easily opened, and air can be suitably discharged from the inflatable portion <NUM>.

Next, modifications of the embodiment will be described. Note that in description of each modification, the same reference symbol will be assigned to the same configuration as that of the embodiment, and a description thereof will be omitted.

<FIG> are diagrams for description of a hemostatic device <NUM> according to Modification <NUM>. <FIG> illustrates a cross-sectional view of a state in which the hemostatic device <NUM> is mounted on the wrist W, and <FIG> illustrate cross-sectional views for description of a configuration and an operation example of each portion of the hemostatic device <NUM>. Each of <FIG> illustrates a simplified plan view and cross-sectional view of the tube body <NUM> and the cover portion <NUM>.

As illustrated in <FIG> and <FIG>, in the hemostatic device <NUM> according to Modification <NUM>, an injection part <NUM> capable of injecting air into the inflatable portion <NUM> is provided integrally with the hemostatic device <NUM>.

The injection part <NUM> has a function of injecting air into the inflatable portion <NUM>. As illustrated in <FIG>, the injection part <NUM> is configured by a three-dimensional (3D) member including a housing space (lumen) 150a capable of housing air. The injection part <NUM> is configured to be elastically transformable, and injects air into the inflatable portion <NUM> by being elastically transformed.

The injection part <NUM> is provided to surround the proximal side (upper side of <FIG>) of the tube body <NUM> on the outer surface side of the band <NUM>. The lumen <NUM> of the tube body <NUM> communicates with the housing space 150a of the injection part <NUM> via the proximal end opening <NUM>. The tube body <NUM> connects the inflatable space 40a of the inflatable portion <NUM> and the housing space 150a of the injection part <NUM> to each other. As described below, when air is injected into the inflatable portion <NUM> from the injection part <NUM>, the communication portion <NUM> of the cover portion <NUM> allows communication between the inflatable space 40a and the housing space 150a by air discharged from the hole portion <NUM> of the tube body <NUM> (see <FIG>).

The injection part <NUM> includes a bottom face part <NUM> disposed on the outer surface side of the band <NUM>, a vertical wall part <NUM> projecting from the bottom face part <NUM> to a side at which the band <NUM> is not provided, and an upper face part <NUM> which is continued from the vertical wall part <NUM> and faces the bottom face part <NUM>. A hole portion 150b communicating between an inside and an outside of the housing space 150a is formed in the vertical wall part <NUM>.

The housing space 150a corresponds to a space surrounded by the bottom face part <NUM>, the vertical wall part <NUM>, and the upper face part <NUM>. Note that in the present embodiment, the injection part <NUM> is formed to have a columnar external shape. However, the external shape of the injection part <NUM> is not particularly limited. For example, the external shape of the injection part <NUM> may correspond to a polygonal prism such as a quadrangular prism, a sphere having no distinction between the bottom face part, the vertical wall part, and the upper face part, etc..

The volume of the housing space 150a of the injection part <NUM> is preferably about <NUM>/<NUM> to <NUM>/<NUM> of the volume of the inflatable space 40a of the inflatable portion <NUM>. In this way, the injection part <NUM> is formed to an appropriate size to prevent the injection part <NUM> from hindering manipulation, etc. performed around the hemostatic device <NUM>, and it is possible to reduce the number of times of performing an injection operation of injecting air into the inflatable portion <NUM> described below.

The injection part <NUM> is disposed on the outer surface side of the band <NUM>. For this reason, when compared to a case in which the injection part <NUM> is provided to protrude from the band <NUM> to the wrist W side, the injection part <NUM> rarely comes into contact with the wrist W of a wearer, and thus it is possible to reduce discomfort felt by the wearer. In addition, since the injection operation of injecting air into the inflatable portion <NUM> is performed on the support plate <NUM> having the high hardness, the injection operation is facilitated. Note that a position at which the injection part <NUM> is disposed is preferably disposed on the band <NUM>. However, the position is not particularly limited.

The hole portion 150b formed in the injection part <NUM> penetrates the vertical wall part <NUM> in a direction intersecting with an extending direction of the injection part <NUM> (vertical direction of <FIG>). The hole portion 150b allows air to be taken into the housing space 150a. For example, when the inflatable portion <NUM> is inflated, as illustrated in <FIG>, a finger is placed to grip the injection part <NUM>, and the injection part <NUM> is deformed while the hole portion 150b is blocked with the finger. By this operation, air in the housing space 150a is sent to a lumen <NUM> of the tube body <NUM> communicating with the housing space 150a. As described below, the communication portion <NUM> opens by the air sent to the lumen <NUM> of the tube body <NUM>, so that the lumen <NUM> of the tube body <NUM> and the inflatable space 40a of the inflatable portion <NUM> communicate with each other.

As described above, the hole portion 150b of the injection part <NUM> is formed in the vertical wall part <NUM>. For this reason, a pressing force at the time of deforming the injection part <NUM> becomes relatively difficult to be transmitted to the puncture site P positioned on the inner surface side of the band <NUM> (see <FIG>). Therefore, it is possible to suitably prevent a situation in which the puncture site P is pressed more than necessary by an injection operation of injecting air into the inflatable portion <NUM>. In addition, as described above, since the pressing force for deforming the injection part <NUM> becomes relatively difficult to be transmitted to the puncture site P, when the inflatable portion <NUM> is inflated, the wearer can relatively accurately detect only a pressing force applied to the puncture site P by the inflatable portion <NUM>. In this way, it is possible to inject an optimum amount of air for hemostasis of the puncture site P into the inflatable portion <NUM> based on a pressing force felt by the wearer. Further, since the hole portion 150b is formed in the vertical wall part <NUM>, when compared to a case in which the hole portion 150b is formed in the upper face part <NUM>, a possibility that the hole portion 150b will come into contact with a surrounding article, etc. and be blocked decreases. For this reason, it is possible to prevent the injection part <NUM> from being unintentionally deformed to inadvertently inject air into the inflatable portion <NUM>.

Note that the number of hole portions 150b formed in the injection part <NUM>, a position and a shape of the hole portion 150b, etc. are not particularly limited and may be appropriately changed as long as air can be injected into the inflatable portion <NUM> from the injection part <NUM>.

For example, the injection part <NUM> may be made of an elastomer material such as silicone rubber or latex rubber, a thermoplastic plastic material such as polypropylene or polyethylene, or various thermoplastic elastomer materials having both properties of these materials. Note that the injection part <NUM> is formed to have a relatively thin wall thickness such that a movement operation (rotation operation) of the tube body <NUM> can be performed from the outside via fingers, etc. in a state in which the injection part <NUM> covers a periphery of the tube body <NUM> and folding is allowed in the vertical direction (vertical direction in <FIG>).

For example, the injection part <NUM> can be connected to the band <NUM> by welding or attaching the bottom face part <NUM> to the support plate holding portion 21a (see <FIG>).

As illustrated in <FIG>, a first stopper <NUM> is disposed on the grip portion <NUM> of the tube body <NUM>, and a second stopper <NUM> is disposed on an inner surface side of the upper face part <NUM> of the injection part <NUM>. The first stopper <NUM> is formed in a shape extending in a direction orthogonal to an axial direction of the tube body <NUM>, and the second stopper <NUM> is formed in an L-shape that can be hooked on the second stopper <NUM>.

In the present modification, the injection part <NUM> can be folded as illustrated in <FIG> when an operation of injecting air by the injection part <NUM> is not performed. When the injection part <NUM> is folded, a distal portion of the second stopper <NUM> is hooked on the first stopper <NUM>. In this way, the injection part <NUM> maintains a folded state. In this instance, since the proximal end opening <NUM> of the tube body <NUM> is covered with an inner surface of the upper face part <NUM> of the injection part <NUM>, even when the positions of the hole portion <NUM> and the communication portion <NUM> overlap with each other, it is possible to suitably prevent air from leaking from the proximal end opening <NUM>. When a state in which the injection part <NUM> is folded is released, the second stopper <NUM> is removed from the first stopper <NUM> by operating the injection part <NUM> using fingers, etc..

A sealing member <NUM> that seals the proximal end opening <NUM> of the tube body <NUM> at the time of folding the injection part <NUM> is disposed on the inner surface of the upper face part <NUM> of the injection part <NUM>. The sealing member <NUM> is formed of a convex member inserted into the lumen <NUM> of the tube body <NUM> at the time of folding the injection part <NUM>. For example, the sealing member <NUM> may be formed of a known elastic member. In addition, for example, the sealing member <NUM> may be configured by securing a portion including a member separate from the injection part <NUM> to the injection part <NUM>, or may be configured by a part of the injection part <NUM>. In addition, a specific shape of the sealing member <NUM> is not limited to an illustrated shape. For example, the sealing member <NUM> may be formed in a shape for sealing the proximal end opening <NUM> by coming into close contact with the grip portion <NUM> (the proximal end opening <NUM> and a periphery thereof) at the time of folding the injection part <NUM>.

Note that for example, the first stopper <NUM> and the second stopper <NUM> may be configured as a lock mechanism that restricts movement so that the tube body <NUM> may not rotate by securing the tube body <NUM> to the injection part <NUM> while maintaining the state in which the injection part <NUM> is folded, or may be configured as a lock mechanism that restricts movement so that the tube body <NUM> may not rotate by securing the injection part <NUM> to the band <NUM>.

Next, a description will be given of an operation example of the decompression adjustment mechanism 60A and the injection part <NUM>.

<FIG> illustrate a state before the inflatable portion <NUM> is inflated. In this state, the hole portion <NUM> of the tube body <NUM> is not disposed at a position overlapping the communication portion <NUM> of the cover portion <NUM>, and thus the communication portion <NUM> is in a closed state.

<FIG> illustrate an aspect when the injection part <NUM> is operated to inflate the inflatable portion <NUM>.

When air is sent to the tube body <NUM> by pressing and deforming the injection part <NUM>, the air is released from the hole portion <NUM> via the lumen <NUM> of the tube body <NUM>. When the air is released from the hole portion <NUM>, a slight clearance portion is formed between the outer surface of the tube body <NUM> and the inner surface of the cover portion <NUM>. The air moves to the communication portion <NUM> via the clearance portion formed around the outer surface of the tube body <NUM> (see an arrow "a" in <FIG>). When the air reaches the communication portion <NUM>, the slit forming the communication portion <NUM> is opened to allow communication between the lumen <NUM> of the tube body <NUM> and the inflatable space 40a of the inflatable portion <NUM>. Then, the inflatable portion <NUM> is inflated by injecting the air into the inflatable space 40a of the inflatable portion <NUM>.

When pressing of the injection part <NUM> is released after the inflatable portion <NUM> is inflated, the injection part <NUM> is elastically transformed to return to an original shape. In this instance, when the lumen <NUM> of the tube body <NUM> becomes negative pressure with respect to the inflatable space 40a, the communication portion <NUM> is closed, and a communication state between the inflatable space 40a of the inflatable portion <NUM> and the housing space 150a of the injection part <NUM> is blocked. Further, since the inner surface of the cover portion <NUM> and the outer surface of the tube body <NUM> are in close contact with each other without any gap due to the internal pressure of the inflatable portion <NUM>, it is possible to prevent occurrence of backflow of air from the inflatable portion <NUM> side to the injection part <NUM> side.

<FIG> illustrate an aspect when the decompression operation of the tube body <NUM> is performed.

When the tube body <NUM> is rotated to overlap the positions of the hole portion <NUM> and the communication portion <NUM>, the slit forming the communication portion <NUM> is pressed toward the hole portion <NUM> side by the internal pressure of the inflatable portion <NUM> to open the slit. The communication portion <NUM> allows communication between the lumen <NUM> of the tube body <NUM> and the inflatable space 40a of the inflatable portion <NUM>. Air in the inflatable portion <NUM> is discharged to the outside via the lumen <NUM> of the tube body <NUM>, the housing space 150a of the injection part <NUM>, and the hole portion 150b of the injection part <NUM>. Since a discharge amount of air discharged from the inflatable portion <NUM> when the positions of the hole portion <NUM> and the communication portion <NUM> overlap each other is controlled based on a shape and a size (dimension) of the slit forming the communication portion <NUM>, it is possible to quantitatively control the discharge amount of air, and to appropriately discharge a desired amount of air.

When the decompression operation of the inflatable portion <NUM> is completed, the tube body <NUM> is rotated to adjust the positional relation between the hole portion <NUM> and the communication portion <NUM> so that the hole portion <NUM> and the communication portion <NUM> do not overlap each other.

As described above, the hemostatic device <NUM> according to the present modification has the injection part <NUM> which can be elastically transformed and can inject air into the inflatable portion <NUM>. In addition, the tube body <NUM> connects the inflatable space 40a and the housing space 150a of the injection part <NUM> to each other. In addition, the communication portion <NUM> allows communication between the inflatable space 40a and the housing space 150a by air discharged from the hole portion <NUM> of the tube body <NUM> when air is injected into the inflatable portion <NUM> from the injection part <NUM>.

According to the hemostatic device <NUM>, it is possible to inflate the inflatable portion <NUM> by a simple operation without using a dedicated instrument separate from the hemostatic device <NUM>. In addition, even when the decompression operation of the inflatable portion <NUM> is performed, it is unnecessary to use the dedicated instrument separate from the hemostatic device <NUM>. Therefore, it is possible to eliminate the need to carry the dedicated instrument separate from the hemostatic device <NUM> or an effort to connect the dedicated instrument to the hemostatic device <NUM>, and it is possible to prevent occurrence of a situation in which inflation and decompression of the inflatable portion <NUM> may not be performed by losing the dedicated instrument.

<FIG> is a diagram for description of a hemostatic device <NUM> according to Modification <NUM>.

As illustrated in <FIG>, the hemostatic device <NUM> according to Modification <NUM> includes a gas collecting portion <NUM>. The hemostatic device <NUM> is configured similarly to the hemostatic device <NUM> according to the embodiment (see <FIG>) except that the hemostatic device <NUM> includes the gas collecting portion <NUM>. Although not illustrated, the hemostatic device <NUM> includes the injection part <NUM> that inflates the inflatable portion <NUM> using the syringe, etc..

The gas collecting portion <NUM> is formed of a membrane-shaped member that covers the proximal side of the tube body <NUM>. The gas collecting portion <NUM> partitions an airtight housing space (lumen) 250a around the tube body <NUM>. For example, the housing space 250a may be formed such that the volume thereof at the time of inflating most (the volume at the time of maximum inflation) is smaller than the volume of the inflatable portion <NUM> at the time of maximum inflation. Since decompression of the inflatable portion <NUM> is adjusted within a range in which desired compression can be achieved without discharging all air in the inflatable portion <NUM>, it is possible to prevent the gas collecting portion <NUM> from being formed to be unnecessarily large by forming the volume of the housing space 250a as described above.

Examples of a material contained in the gas collecting portion <NUM> may include the same material as that of the inflatable portion <NUM>.

As illustrated in <FIG>, in a state in which air is not discharged from the inflatable portion <NUM>, the gas collecting portion <NUM> is in a deflated state (contracted state). As illustrated in <FIG>, when the communication portion <NUM> is opened by overlapping the positions of the hole portion <NUM> of the tube body <NUM> and the communication portion <NUM> of the cover portion <NUM>, air is discharged from the inflatable portion <NUM>. The air discharged from the inflatable portion <NUM> moves into the housing space 250a corresponding to the outside of the inflatable space 40a. For example, when the gas collecting portion <NUM> is pressed in a state in which air is housed in the housing space 250a, air can be sent to the inflatable portion <NUM> again. For this reason, even in a case in which air is excessively extracted from the inflatable portion <NUM> after inflation using the decompression adjustment mechanism 60A or in a case in which air is excessively extracted from the inflatable portion <NUM> using the injection part <NUM>, it is possible to send air to the inflatable portion <NUM> again by a simple operation, and to readjust the internal pressure of the inflatable portion <NUM>. In addition, the wearer, the doctor, etc. may easily confirm an extent to which decompression of the inflatable portion <NUM> progresses by visually checking a degree of inflation of the gas collecting portion <NUM>.

As described above, since the hemostatic device <NUM> according to the present modification includes the gas collecting portion <NUM>, it is possible to finely adjust the internal pressure of the inflatable portion by a simple operation. In addition, in the hemostatic device <NUM> according to the present modification, the gas collecting portion <NUM> has a simple configuration, and thus it is possible reduce manufacturing cost and facilitate manufacturing work.

As illustrated in <FIG>, the hemostatic device <NUM> according to Modification <NUM> is different from the embodiment and the respective modifications described above in that the tube body <NUM> is movable with respect to the cover portion <NUM> along an axial direction of the cover portion <NUM> (vertical direction in the figure).

As illustrated in <FIG>, when the decompression operation of the inflatable portion <NUM> is performed, the tube body <NUM> is moved to a distal side of the cover portion <NUM> (lower side in the figure) to superimpose the positions of the hole portion <NUM> and the communication portion <NUM>. By performing this operation, it is possible to discharge air from the inflatable portion <NUM> by opening the communication portion <NUM>. Note that the bottom face part <NUM> is provided on the tube body <NUM> to prevent the tube body <NUM> from falling from the cover portion <NUM> when the tube body <NUM> is moved in the axial direction.

As described above, a mechanism for controlling movement of the tube body <NUM> for superimposing the positions of the hole portion <NUM> and the communication portion <NUM> is not limited to a mechanism for controlling rotational movement of the tube body <NUM>, and may correspond to a mechanism for controlling movement of the tube body <NUM> in the axial direction as in the present modification.

Note that the hemostatic device <NUM> shown in the present modification illustrates a configuration not including the injection part for injecting air and the lock mechanism that restricts movement of the tube body <NUM>. However, it is possible to adopt a configuration including the injection part and the lock mechanism similar to the embodiment and the respective modifications.

Even though the hemostatic device according to the invention has been described above through the embodiment and modifications, the invention is not limited only to the respective configurations described above, and can be appropriately changed based on the description of claims.

For example, each portion included in the hemostatic device may be replaced with a portion having an arbitrary configuration capable of exerting the same function. In addition, an arbitrary component may be added.

In addition, the invention is not limited to the hemostatic device used by being mounted on the wrist, and may be applied to a hemostatic device used by being mounted on a leg, etc..

In addition, in the embodiment, a description has been given of a case in which the hemostatic device includes the auxiliary pressing portion. However, the hemostatic device may not include the auxiliary pressing portion.

In addition, movement of the tube body is not limited to rotation with respect to the cover portion or movement along the axial direction (movement in the vertical direction) illustrated in the embodiment. For example, the positions of the hole portion and the communication portion may be aligned by combining rotation of the tube body and movement in the axial direction. In addition, the tube body and the cover portion may be controllable so that the positions of the hole portion and the communication portion overlap each other by relative movement of the tube body and the cover portion. For example, the cover portion may be configured to be movable with respect to the tube body, or both the cover portion and the tube body may be configured to be movable.

In addition, a configuration of the tube body and the cover portion is not particularly limited as long as the lumen of the inflatable portion and the outside can communicate with each other when the positions of the hole portion and the communication portion overlap each other. For example, use of additional members (the valve body, the lid member, etc.) described in the embodiment may be omitted as appropriate.

Claim 1:
A hemostatic device (<NUM>, <NUM>, <NUM>, <NUM>) comprising:
a band (<NUM>) for wrapping around a site where bleeding is to be stopped of a limb (W);
means (<NUM>) for securing that secures the band (<NUM>) to the limb (W) in a wrapped state;
an inflatable portion (<NUM>) connected to the band (<NUM>) and inflated by being injected with gas;
a tube body (<NUM>) that communicates between a lumen (40a) of the inflatable portion (<NUM>) and an outside;
whereby the hemostatic device (<NUM>, <NUM>, <NUM>, <NUM>) further comprises:
a cover portion (<NUM>) that, inside the inflatable portion (<NUM>), covers the tube body (<NUM>),
wherein the tube body (<NUM>) has a hole portion (<NUM>) that opens in the inflatable portion (<NUM>),
the cover portion (<NUM>) has a communication portion (<NUM>) that is disposed to cover the hole portion (<NUM>) and allows communication between the hole portion (<NUM>) and the lumen (40a) of the inflatable portion (<NUM>) by being positioned to overlap the hole portion (<NUM>), and
the tube body (<NUM>) is movable relative to the cover portion (<NUM>) so that a positional relationship between the communication portion (<NUM>) and the hole portion (<NUM>) is controllable,
wherein a lock mechanism (<NUM>, 82a, 82b) that restricts movement of the tube body (<NUM>) relative to the cover portion (<NUM>) is included,
and
wherein the lock mechanism (<NUM>, 82a, 82b) includes a first member (<NUM>) disposed on the tube body (<NUM>) and a second member (82a, 82b) provided on a support body (<NUM>) disposed on a proximal side of the cover portion (<NUM>) and configured to be engaged with and separated from the first member (<NUM>).