JP2014200308A - Hemostatic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hemostatic device capable of easily weakening pressure for pressing a hemostatic region gradually.SOLUTION: A fixing part 2 is fixed to a limb S from an outside so that an expansion part 1 is located at a hemostatic region P. Expansion fluid is injected into expansion chambers 16a-16e of the expansion part 1 to expand, so that the expansion part 1 presses the hemostatic region P of the limb S while being supported by a contact surface 7 of the fixing part 2. Exhaust ports 14a-14e respectively formed in the expansion chambers 16a-16e are opened in turn to exhaust the expansion fluid, so that pressure F for pressing the hemostatic region P is reduced gradually.

Description

  The present invention relates to a hemostatic device that presses a hemostatic site of a limb to stop hemostasis.

  When a medical device such as a catheter is inserted percutaneously into a blood vessel for treatment / inspection, the introducer sheath is usually placed by puncturing from the skin into the blood vessel, and the introducer sheath is inserted through the lumen of the introducer sheath. A medical device is inserted into the blood vessel. At this time, after removing the introducer sheath, it is necessary to stop bleeding at the puncture site. In order to perform such hemostasis, a hemostasis device is known that is mounted so as to be wound around a portion of a puncture site of an arm or a leg and presses the puncture site to be hemostatic.

  For example, Patent Literature 1 describes a hemostatic device that presses a hemostatic site with a balloon when the arm is wound around a hemostatic site of an arm and controls the pressing direction of the balloon with an auxiliary balloon. With this configuration, for example, even when a catheter is inserted from a blood vessel located at a position shifted from the central axis of the arm, such as the radial artery, the balloon is in an appropriate direction with respect to the hemostatic site. Therefore, it is possible to accurately stop the hemostatic site, thereby shortening the hemostatic time.

JP 2004-41599 A

  However, in the conventional hemostatic device, since the balloon expanded to press the hemostatic site maintains the pressure to the hemostatic site in the state after expansion, the balloon compresses blood vessels and nerves for a long time. Continuing may cause numbness and pain, and blood vessels may become occluded. Therefore, doctors and nurses have manually performed an operation to decompress the balloon over time in order to adjust the pressure (compression force) by the balloon to the hemostatic site. Specifically, a syringe is connected to a fluid injection portion of the balloon so that the balloon has an appropriate pressure, and the amount of fluid in the balloon is adjusted while looking at the scale of the syringe. This work has been a burden on workers such as doctors and nurses.

  The present invention has been made to solve such a conventional problem, and it is possible to easily and gradually reduce the pressure at which the operator such as a doctor or a nurse presses the hemostatic site with a simple operation. An object is to provide a hemostatic device.

  The hemostasis device according to the present invention is composed of a flexible band wound around the hemostatic site of the limb, fixing means for fixing the band in a state of being wound around the limb, and a material harder than the band, at least of which A curved plate partially curved toward the inner peripheral side, and an extended portion disposed inside the curved plate, the extended portion has a plurality of extended chambers formed to be expandable, The expansion part is expanded by injecting an expansion fluid into the expansion chamber, and a plurality of expansion chambers are formed with outlets that can be selectively opened and closed, and can be expanded by opening the outlets. The expansion fluid injected into the chamber is discharged, and the expansion portion is configured to reduce the pressure with which the hemostatic device is pressed. With this configuration, by opening the selected discharge port, the expansion fluid inside the expansion chamber in which the selected discharge port is formed is discharged and the expansion chamber shrinks, so the operator opens the discharge port. The pressure of the hemostatic device can be adjusted with a simple operation.

  In addition, the expansion unit gradually reduces the pressure that presses the hemostatic site by the expansion unit by opening the expansion chamber discharge port constituting the expansion unit in order from the discharge port of the expansion chamber close to the curved plate. Can be configured. As a result, when the operator adjusts the pressure of the hemostatic device, the expansion is reduced between the expanded expansion chamber and the hemostatic site by releasing the expansion fluid from the discharge port in a direction away from the hemostatic site. Since the chamber is not located, the hemostatic device can be decompressed without diffusing the pressure from the expanded chamber toward the hemostatic site. Further, as will be described later, when a communication hole is provided between the expansion chambers and a check valve is provided in the communication hole, the expansion fluid in the expansion chamber flows into the other expansion chamber through the check valve. This can be surely prevented.

  Here, the expansion part has a plurality of pressing balloons stacked on each other, and the expansion chamber can be formed in the internal space of the pressing balloon. By configuring in this way, it is possible to match the interval of the operator's depressurization operation and the amount of depressurization each time only by changing the number and size of the pressing balloons.

  Moreover, an expansion part can be comprised integrally through the connection part which a some press balloon connects mutually. Thereby, the pressing direction of an expansion part can be adjusted by changing the position of the connection part of a some press balloon. At this time, the pressure applied to the hemostatic site by the expansion portion is more excellent because the pressure due to the expansion of the expansion portion is transmitted to the hemostatic site when the pressure is directed in the direction F perpendicular to the plane where the hemostatic site is located. A hemostatic effect is obtained, and hemostasis can be more reliably performed. Therefore, when the pressing balloon of the expansion body is expanded, the expanded expansion body comes into contact with the curved plate or the band of the fixed portion, and the connection portion is on a straight line connecting the contact surface of the solid portion and the hemostatic site. It is preferable to be arranged side by side. Thereby, the pressing direction of the plurality of pressing balloons can be directed to the hemostatic site through the expansion portion. Here, the fixing portion is composed of a flexible belt body that is wound around the limb body to be hemostatic, a fixing means that fixes the belt body around the limb body, and a material harder than the belt body, At least a part thereof is formed of a curved plate curved toward the inner peripheral side.

  Moreover, the hemostatic device may have an auxiliary balloon smaller than the expansion portion between the expansion portion and the band or the curved plate. Since the width | variety of the auxiliary | assistant balloon is made smaller than the expansion part in the longitudinal direction of the strip | belt body of a solid part, the magnitude | size is smaller than an expansion body, and presses an expansion part locally. Therefore, the direction of the pressure from the expansion part to the hemostatic site can be adjusted more reliably in the direction F perpendicular to the plane where the hemostatic site is located.

Moreover, it is preferable that an expansion part further has a position control part which is arrange | positioned so that an expansion part may be covered, and controls the position of a some press balloon. In addition, the auxiliary balloon may be arrange | positioned inside the position control part. By configuring in this way, when the pressing balloon is expanded, it is possible to prevent the positional relationship of the pressing balloon from being shifted and the pressing direction of the expanded portion from being changed. Further, when an auxiliary balloon is provided, a position restricting member may be provided so as to cover the expansion portion and the auxiliary balloon so as not to change the positional relationship between the auxiliary balloon and the expansion portion.

  Moreover, the expansion part has one press balloon formed so that expansion is possible, and an expansion chamber can also be formed so that the inside of the said press balloon may be several space laminated | stacked mutually. In this way, even if the position restricting member is not provided, the expansion chamber is not displaced in the pressing direction when the expansion portion is expanded. Furthermore, you may have an auxiliary | assistant balloon smaller than an expansion part between a press balloon and a strip | belt body or a curved board. The auxiliary balloon has a smaller width in the longitudinal direction of the band of the fixing portion than that of the expansion portion, so that the size of the auxiliary balloon is smaller than that of the expansion body, and locally presses the expansion portion. Therefore, the direction of the pressure from the expansion part to the hemostatic site can be adjusted more reliably in the direction F perpendicular to the plane where the hemostatic site is located.

The expansion portion includes a communication hole that communicates the plurality of expansion chambers with each other, and a check valve disposed in the communication hole so that expansion fluid is injected in one direction into the plurality of expansion chambers via the communication holes. It is preferable to have. With such a configuration, by injecting an expansion fluid from the injection unit 3 of FIG. 1, a plurality of pressing balloons of the expansion unit can be expanded at a time.
Further, the discharge port can be configured to be sealed with a seal from the outside of each expansion chamber. By comprising in this way, a discharge port can be open | released only by operation which peels off a seal | sticker. By doing so, the operator can decompress the hemostatic device only by a simple operation of removing the seal.

  According to the present invention, the pressure for pressing the hemostatic site is decreased stepwise by opening the discharge ports respectively formed in the plurality of pressing chambers. Therefore, the pressure for pressing the hemostatic site can be easily stepped by a simple operation. It becomes possible to weaken.

It is a top view which shows the structure of the hemostatic device which concerns on Embodiment 1 of this invention. It is a fragmentary sectional view which shows a mode that the hemostatic instrument which concerns on Embodiment 1 presses a hemostatic site | part. It is sectional drawing which shows a mode that the hemostatic device which concerns on Embodiment 1 presses a hemostatic site | part. FIG. 6 is a cross-sectional view showing a state in which an expansion fluid is injected into an expansion chamber of the hemostatic device according to Embodiment 1. FIG. 3 is a cross-sectional view showing a state in which expansion fluid is discharged from the expansion chamber of the hemostatic device according to Embodiment 1. It is sectional drawing which shows a mode that the press balloon of the hemostatic device which concerns on Embodiment 1 was shrink | contracted. It is sectional drawing which shows a mode that the press balloon of the hemostatic device which concerns on Embodiment 1 was further contracted. FIG. 10 is a cross-sectional view showing a configuration of a hemostatic device according to a modification of the first embodiment. FIG. 10 is a cross-sectional view showing a configuration of a hemostatic device according to another modification of the first embodiment. 6 is a cross-sectional view showing a configuration of a hemostatic device according to Embodiment 2. FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows the configuration of the hemostatic device according to Embodiment 1 of the present invention. The hemostatic device includes an expansion portion 1 that presses the hemostatic site of the limb by expanding, a fixing portion 2 that fixes the expansion portion 1 from the outside to the limb body, and an expansion fluid for expanding the expansion portion 1. And an injection part 3 for injecting into the extension part 1.

  The fixing part 2 is composed of a flexible belt body 4 that is wound around the limb body to be hemostatic, a fixing means 5 that fixes the belt body 4 in a state of being wound around the limb body, and a material harder than the belt body 4. , At least a part of which has a curved plate 6 curved toward the inner peripheral side.

  The band 4 is a band-shaped member having flexibility. For example, the band 4 is wound around the outer circumference of the wrist of the person to be treated, and is attached to the wrist so that portions near both ends thereof overlap each other. For example, the band 4 can be fixed to the wrist by disposing a pair of hook-and-loop fasteners on the overlapping portion.

  It is preferable that the band 4 is made of a material having transparency so that the puncture site can be reliably visually recognized from the outside. For example, polyvinyl chloride, polyethylene, polypropylene, polybutadiene, polyolefin such as ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), polyester such as polybutylene terephthalate (PBT), polyvinylidene chloride, silicone, Various thermoplastic elastomers such as polyurethane, polyamide elastomer, polyurethane elastomer, and polyester elastomer, or any combination thereof (blend resin, polymer alloy, laminate, etc.) can be used.

  A curved plate holding portion that holds the curved plate 6 is formed at the center of the band 4. The curved plate holding portion is doubled by bonding a separate band member to the outer surface side or the inner surface side by a method such as fusion or adhesion, and the curved plate 6 inserted in the gap between them is attached. Hold.

  The fixing means 5 may be any means that fixes the band 4 in a state of being wound around a hemostatic site such as a wrist of a limb, and is not limited to the above-described hook-and-loop fastener, but includes, for example, a snap, a button, a clip, and an end of the band A frame member may be used.

  The curved plate 6 is held by the belt body 4 by being inserted between the double curved plate holding portions of the belt body 2. In addition, the method of arrange | positioning the curved plate 6 to a strip | belt body is not restricted to the structure of illustration, For example, you may join to the inner surface side or the outer surface side of the strip | belt body 4 by methods, such as melt | fusion or adhesion | attachment. Further, the band body 4 does not have to go around the wrist or the like, for example, is connected to both ends of the curved plate 6, and the band body does not have to exist in a portion overlapping the curved plate 6. Further, the curved plate 6 has a shape in which at least a part is curved toward the inner surface side.

  The curved plate 6 is preferably made of a material having permeability so that the puncture site can be reliably recognized from the outside. For example, acrylic resin, polyvinyl chloride (particularly hard polyvinyl chloride), polyolefin such as polyethylene, polypropylene, polybutadiene, polystyrene, poly- (4-methylpentene-1), polycarbonate, ABS resin, polymethyl methacrylate (PMMA) , Polyacetal, polyacrylate, polyacrylonitrile, polyvinylidene fluoride, ionomer, acrylonitrile-butadiene-styrene copolymer, polyester such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), butadiene-styrene copolymer, aromatic Or it can comprise from fluorine-type resins, such as aliphatic polyamide and polytetrafluoroethylene.

  On the inner side of the curved plate 6, an extension portion 1 made of a material having expandability is installed. The expansion part 1 expands by injecting an expansion fluid (a gas such as air or a liquid), and compresses the hemostatic site of the limb.

The expansion part 1 has a pressing balloon 8 formed so as to be expandable, and a position restricting part 9 arranged so as to cover the pressing balloon 8. In addition, the extended portion 1 is located closer to one end side in the longitudinal direction of the curved plate 6. In FIG. 2, the extended portion 1 is positioned so as to overlap the substantially right half side of the curved plate 6.
Here, the position restricting portion 9 and the band 4 are connected by a connecting portion 10. And when the expansion part 1 is expanded, the connection part 10 is supported by the curved plate, abuts on the belt body 4, and is arranged between the abutment surface 7 and the hemostatic site of the limb. The length has been adjusted.

  The material of the pressing balloon 8 of the expansion part 1 is not particularly limited, and for example, the same material as the constituent material of the band 4 described above can be used. The pressing balloon 8 is preferably made of the same material or the same kind of material as the band 4. Thereby, joining with the belt | band | zone body 4 by melt | fusion can be performed easily, and it can manufacture easily.

  Such an extended portion 1 is connected to the belt body 2 via a connecting portion 10 having flexibility. In this embodiment, only the side that is offset with respect to the curved plate 6, that is, the right side in FIG. 2 is connected to the band body 4 via the connecting portion 10. Further, in this embodiment, the position restricting portion 9 of the expansion portion 1 is connected to the band body 4 via the connection portion 10, but is not limited to this. 10 may be connected to the band 4 via 10. The substantial length of the connecting portion 10 is relatively short, so that the extended portion 1 is anchored at a position offset from the curved plate 6. In addition, in order to make joining by fusion | fusion easy, it is preferable to comprise with the same material as a position control part or a press balloon.

  The material of the position control part 9 is not specifically limited, For example, the thing similar to the constituent material of the strip | belt body 4 mentioned above can be used. The position restricting portion 9 only needs to be configured to restrict the movement of the plurality of pressing balloons 8, and is not limited to the configuration covering the plurality of pressing balloons as shown in FIG.

The injection part 3 includes a tube 11 communicating with the inside of the pressing balloon 8 and a connector part 12 connected to the tube 11. The connector portion 12 has an opening portion 13 communicating with the inside of the tube 11, and an expansion fluid is injected into the pressing balloon 8 through the tube 11 by connecting a syringe or the like to the opening portion 13 and injecting the expansion fluid. Can be supplied. Further, since the check valve is built in the connector part 12 and the check valve is closed at the same time that the syringe is removed from the opening 13 of the connector part 12, the expansion fluid supplied into the pressing balloon 8 flows backward. Thus, leakage from the opening 13 can be prevented.
The expansion fluid is preferably one that can be easily handled. For example, a gas such as air or a liquid can be used.

  The hemostatic device is provided with a marker so that when the expansion portion is expanded, the expansion portion compresses the hemostatic site in an appropriate pressing direction F so that the expansion portion can be easily aligned when the limb is fixed. Also good. The marker may be provided so as to be visible from the outside when the hemostatic device is attached to the limb, and can be provided, for example, on the extension part, the band, or the curved plate. With this configuration, when the hemostatic device is attached to the limb, the hemostatic site can be pressed in an appropriate pressing direction by simply aligning the positions of the marker and the hemostatic site. Note that the shape of the marker is not particularly limited, and examples thereof include a circle, a triangle, and a quadrangle.

Next, the configuration of the extension unit 1 will be described in detail.
FIG. 2 shows a state in which a hemostatic device is attached to the limb S and the hemostatic site P of the limb S is pressed by expanding the pressing balloon 8 of the expansion portion 1.
The pressing balloon 8 is configured by stacking five pressing balloons 8a to 8e between the fixing portion 2 and the hemostatic site P. The press balloons 8a to 8e are formed so as to be expandable, and expand in a direction orthogonal to the hemostatic site P by injecting an expansion fluid into the press balloons 8a to 8e. The expansion part 1 is expanded by the expansion of the pressing balloons 8a to 8e, and the expansion part 1 is in contact with the band 4 of the fixing part 2 while being supported by the curved plate 6 of the fixing part 2. Then, the hemostatic site P is pressed while being supported by the contact surface 7 of the fixing portion 2.

  The press balloons 8a to 8e are formed with discharge ports 14a to 14e for discharging the expansion fluid injected therein, and seals 15a to 15e for sealing the discharge ports 14a to 14e. It arrange | positions so that the outer side of the discharge ports 14a-14e may be covered.

  The seals 15a to 15e that seal the discharge ports 14a to 14e may be peeled off even when the expansion fluid is injected into the pressing balloon and may be detachably fixed to the discharge port. For example, a synthetic resin film or the like Can be configured. Note that the seal needs to cover the discharge port both before and after the expansion, so that the seal may be flexible enough to prevent the shape of the pressure balloon from changing.

  The position restricting portion 9 is configured by a belt-like member that covers and bundles the pressing balloons 8a to 8e, and integrally restricts the positions of the pressing balloons 8a to 8e.

  As shown in FIG. 3, the press balloons 8 a to 8 e have expansion chambers 16 a to 16 e that are expandable inside, and the expansion fluid is injected into the expansion chambers 16 a to 16 e, whereby the press balloon 8 a. ~ 8e is expanded. Further, the pressing balloons 8a to 8e are connected to each other via the connecting portions 17a to 17d and are integrally formed. The connecting portions 17a to 17d are arranged side by side on a straight line L connecting the abutment surface 7 of the fixing portion 2 and the hemostatic site P of the limb body S, whereby the pressing directions of the pressing balloons 8a to 8e are changed. Can be directed to the hemostatic site. That is, the pressing direction of the pressing balloons 8a to 8e is defined by the arrangement direction of the connecting portions 17a to 17d. By arranging the connecting portions 17a to 17d in a direction orthogonal to the hemostatic site P, the hemostatic site P is arranged. It can be pressed from the front.

  The connection portions 17a to 17d are formed with communication holes 18a to 18d for communicating the expansion chambers 16a to 16e with each other, and check holes 19a to 19d are provided in the communication holes 18a to 18d. The check valves 19a to 19d are provided so that the expansion fluid is injected into the expansion chambers 16a to 16e only in one direction through the communication holes 18a to 18d. As a result, as shown in FIG. 4, the expansion fluid is injected from the injection port 20 of the pressing balloon 8 a communicated with the tube 11 of the injection unit 3, so that the expansion fluid is expanded through the communication holes 18 a to 18 d. 16a to 16e are supplied at a time, and the injection of the expansion fluid into the expansion chambers 16a to 16e is stopped. At the same time, the check valves 18a to 18d close the communication holes 18a to 18d, and the expansion chambers 16a to 16e It is possible to suppress the backflow of the expansion fluid injected into the.

Next, the operation of the first embodiment will be described.
First, the hemostatic device shown in FIG. 1 is disposed at a hemostatic site P generated in surgery or the like, and the expansion portion 1 is brought into contact with the hemostatic site P. For example, the hemostatic site P is a puncture site generated by puncture in a surgery using a catheter.

Next, in a state where the expansion portion 1 is in contact with the hemostatic site P, the belt body 4 of the fixing portion 2 extending on both sides of the expansion portion 1 is deformed so as to be wound around the limb S, and the fixing means 5 is used. The limb body S is fixed around. Here, in FIG. 1, as the fixing means 5, a pair of hook-and-loop fasteners 5 are provided at both ends of the band body 4, and the hook-and-loop fasteners at both ends of the band body 4 can be fixed together.
Subsequently, a syringe is connected to the opening 13 of the injection unit 3, and air is injected from the syringe as an expansion fluid for expanding the expansion unit 1. As shown in FIG. 4, the air injected from the syringe is supplied from the injection port 20 into the pressing chamber 16 a of the pressing balloon 8 a through the tube 11. Here, the expansion chambers 16a to 16e are communicated with each other through the communication holes 18a to 18d, and the air supplied into the expansion chamber 16a is expanded at a time through the communication holes 18a to 18d. Injected into ~ 16e.

  As the air is injected into the expansion chambers 16a to 16e, the pressing balloons 8a to 8e are expanded between the belt body 4 and the limb body S. At this time, for example, when the puncture site is a radial artery or the like, the hemostatic site P is shifted from the central axis of the arm as shown in FIG. May shift from the hemostatic site P. However, the position of the expansion part 1 is regulated by the connecting part 10, and the expansion part 1 can be expanded while being positioned in front of the hemostatic site P. In this way, as shown in FIG. 2, the pressing balloons 8 a to 8 e press the hemostatic site P with a predetermined pressure F while being supported by the contact surface 7 of the fixing portion 2. When the hemostatic site P is pressed with a predetermined pressure F, the injection of air into the pressing balloons 8a to 8e is stopped.

  Here, as shown in FIG. 3, the pressing balloons 8 a to 8 e are connected via connecting portions 17 a to 17 d located on a straight line L connecting the contact surface 7 of the fixing portion 2 and the hemostatic site P of the limb S. Are connected to each other. For this reason, the pressing directions of the respective pressing balloons 8a to 8e are regulated so as to be along the straight line L, and the pressing directions of the entire pressing balloons 8a to 8e can be directed to the hemostatic site. In addition, when the check valve built in the connector portion 12 stops the injection of air into the expansion chambers 16a to 16e so that the air supplied into the expansion chambers 16a to 16e does not leak from the opening portion 13. At the same time, since the opening 13 is sealed, the pressure F at which the pressing balloons 8a to 8e press the hemostatic site P can be kept constant. Further, the communication holes 18a to 18d communicating the expansion chambers 16a to 16e with each other are sealed by the check valves 19a to 19d at the same time when the air injection is stopped, and thus supplied to the respective expansion chambers 16a to 16e. It is possible to prevent the air from moving into the other expansion chambers 16a to 16e.

  In this manner, by pressing the hemostatic site P with the predetermined pressure F by the pressing balloons 8a to 8e, the puncture site generated during the operation can be hemostatic. At this time, if the hemostatic site P is pressed with a predetermined strong pressure F throughout the hemostasis time, the blood vessels are blocked and blood does not flow easily, and there is a possibility that numbness or pain may occur in the limb of the patient wearing the hemostasis device. Therefore, it is necessary to gradually weaken the pressure F that presses the hemostatic site P by reducing the expansion fluid injected into the pressing balloon of the expansion portion 1. Therefore, in the present invention, the pressure F for pressing the hemostatic site P is decreased stepwise by deflating the pressing balloons 8a to 8e every predetermined time.

  Specifically, in a state where all of the pressing balloons 8a to 8e are expanded, for example, after pressing the hemostatic site P for only 1 hour, the limb of the patient wearing the hemostatic device is prevented from numbness or pain. As shown in FIG. 5, the seal 15a that seals the discharge port 14a of the pressing balloon 8a from the outside is peeled off, and the air injected into the expansion chamber 16a is discharged from the discharge port 14a. At this time, since the check holes 18a to 18d are provided in the communication holes 18a to 18d communicating with the expansion chambers 16a to 16e, the air injected into the expansion chambers 16b to 16e moves into the expansion chamber 16a. This is not done, and only the air injected into the expansion chamber 16a can be discharged from the discharge port 14a. In this way, as shown in FIG. 6, only the pressing balloon 8a is deflated, and the pressure F for pressing the hemostatic site P is weakened by one level. By weakening the pressure F that presses the hemostatic site P, it is possible to suppress the occurrence of symptoms such as the blood vessels and nerves being compressed to cause numbness and pain, and the blood vessels to be blocked by the pressure to cause poor circulation.

Similarly, the seals 15b to 15d that seal the discharge ports 14b to 14d of the pressing balloons 8b to 8d from the outside are peeled off every hour, and the air injected into the expansion chambers 16b to 16d is discharged to the discharge ports 14b to 14b. It discharges in order from 14d. Also at this time, air does not move to the other expansion chambers 16b to 16e by the check valves 18b to 18d, and only the air injected into the expansion chambers 16b to 16e is discharged from the corresponding discharge ports 14b to 14d. can do. Thereby, the pressing balloons 8b to 8d can be contracted for each stage.
In this way, the pressure balloons 8a to 8d are contracted stepwise, and the pressure F that presses the hemostatic site P is gradually reduced. As shown in FIG. To stop the hemostasis of the hemostatic site P. Thus, the press balloons 8a to 8e adjust the pressure against the hemostatic site P of the expansion part 1 in each hemostasis stage, and are formed in a size corresponding to each hemostasis stage.

  According to the present embodiment, it is possible to contract the corresponding pressing balloons 8a to 8e by simply removing the seals 15a to 15e in order, so that the pressure F for pressing the hemostatic site P can be easily reduced. A predetermined amount of air is injected into each of the expansion chambers 16a to 16e, and the pressure for pressing the hemostatic site P by deflating each of the press balloons 8a to 8e is set at each hemostasis stage. Therefore, the operator does not need to be aware of the amount of air discharged from the pressing balloons 8a to 8e, and the burden on the operator can be reduced.

  The hemostatic device can further include an auxiliary balloon 21 that is smaller than the expansion portion 1. As shown in FIG. 8, the auxiliary balloon 21 may be provided between the pressing balloon closest to the fixed portion 2 and the position restricting portion 9 inside the position restricting portion 9 of the expansion portion 1, but is not limited thereto. Instead, as shown in FIG. 9, the expansion portion 1 may be provided between the outside of the position restricting portion 9 and the fixing portion 2. Since the auxiliary balloon 21 has a width in the longitudinal direction of the band 4 of the fixing portion 2 smaller than that of the expansion portion 1, the expansion balloon 1 can be pressed locally. Therefore, for example, in the case of FIG. 8, the auxiliary balloon 21 is arranged on a straight line L connecting the contact surface 7 of the fixing portion 2 and the hemostatic site, thereby further pressing the expanded portion 1 in the pressing direction toward the hemostatic site P. Since pressure can be applied from the outside, the hemostatic site P can be pressed more intensively. As shown in FIG. 9, when the auxiliary balloon 21 is provided outside the position restricting portion of the expansion portion 1, the expansion portion 1 is locally pressed from the outside by the auxiliary balloon 21. It is also possible to control the direction of the pressing force F to the hemostatic site P in a more appropriate direction. The auxiliary balloon 21 communicates with, for example, the pressing balloon 8a of the expansion portion 1 so as to expand with expansion of the pressure balloon 8 of the expansion portion 1, and a check valve or the like is provided at the communication portion. May be.

Moreover, in said embodiment, although the position control part 9 was comprised from the belt-shaped thing which bundles the press balloons 8a-8e, if it can be bundled so that the position of the press balloons 8a-8e can be regulated. Well, not limited to this. For example, it can also comprise so that the whole press balloons 8a-8e may be covered with a bag-shaped thing. Further, even if the position restricting portion 9 is not provided, the position restricting portion 9 can be removed if the pressing balloons 8a to 8e are integrated to some extent.
Moreover, if the pressure which presses the hemostatic site | part P can be decreased in steps, the order which discharges air from the press chambers 16a-16e is not restricted to said example.

Embodiment 2
In Embodiment 1, the pressing balloons 8a to 8e of the expansion portion 1 are expanded to press the hemostatic site P. However, if the expansion portion having a plurality of expansion chambers that can be expanded can press the hemostatic region P. Well, not limited to this.
For example, as shown in FIG. 10, the hemostatic device of the first embodiment is provided with a single pressing balloon 31 excluding the position restricting portion 9 and capable of expanding in place of the pressing balloons 8a to 8e, and further including a pressing balloon. An auxiliary balloon 32 smaller than the pressing balloon 31 can be disposed between 31 and the contact surface 7 of the fixing portion 2. In the second embodiment, the expansion part 1 is composed of only one pressing balloon 31. Here, when it is assumed that the auxiliary balloon 32 is not present, the contact surface 7 of the fixing portion 2 is supported by the curved plate 6 of the fixing portion 2 when the pressing balloon 31 is expanded, and the pressing balloon 31 and the fixing portion 2. An area in the vicinity of which the belt body 4 contacts.
The pressing balloon 31 has a dividing portion 34 that divides the inside into five expansion chambers 33a to 33e that are stacked on each other. A communication hole 35 that allows the expansion chambers 33 a to 33 e to communicate with each other is formed in the dividing portion 34, and a check valve 36 is provided in the communication hole 35. The check valve 36 is provided so that the expansion fluid is injected into the expansion chambers 33a to 33e through the communication hole 35 only in one direction. As a result, the expansion fluid is injected into the expansion chamber 33 a from the injection port 20 communicated with the tube 11 of the injection unit 3, so that the expansion fluid is supplied into the expansion chambers 33 a to 33 e through the communication hole 35. The check valve 36 closes the communication hole 35 at the same time as the injection of the expansion fluid into the expansion chambers 33a to 33e is stopped, thereby preventing the expansion fluid injected into the expansion chambers 33a to 33e from flowing back. Can do.
In this way, the expansion fluid is injected into each of the expansion chambers 33a to 33e, whereby the pressing balloon 31 is expanded between the belt body 4 and the limb body S to press the hemostatic site P of the limb body S.

The auxiliary balloon 32 is disposed on a straight line L connecting the abutment surface 7 of the fixing portion 2 and the hemostatic site P. The auxiliary balloon 32 is supported by the abutment surface 7 of the fixing portion 2 and expands the pressing balloon 31 to the hemostatic site P. Press toward. Thereby, the pressing direction toward the hemostatic site P can be given to the pressing balloon 31 from the outside, and the direction of the pressure from the pressing balloon 31 to the hemostatic site can be more reliably inclined to the hemostatic site P. Thus, the pressure F can be applied in an appropriate pressing direction.
In this way, by pressing the hemostatic site P with the predetermined pressure F with the pressing balloon 31, the puncture site can be hemostatic.

  The auxiliary balloon 32 communicates with the pressing balloon 31, and a check valve may be provided at the communicating portion. Moreover, it is not restricted to this, You may connect with the tube extended from the injection | pouring part 3. FIG. With this configuration, the auxiliary balloon 32 can be expanded simultaneously with the pressing balloon 31.

The pressing balloon 31 is formed with a discharge port 37 for discharging the expansion fluid injected into each of the expansion chambers 33a to 33e, and has a seal 38 for sealing the discharge port 37, respectively. It arrange | positions so that the discharge port 37 may be covered from the outside.
The discharge port 37 is opened by peeling the seal 38 every predetermined time, and the expansion fluid is discharged from the respective expansion chambers 33a to 33e. Thereby, the pressure balloon 31 is contracted together with the respective expansion chambers 33a to 33e, and the pressure F that presses the hemostatic site P can be reduced stepwise.

  According to the present embodiment, the corresponding expansion chambers 33a to 33e can be contracted by simply peeling off the seals 38 in order, so that the pressure F that presses the hemostatic site P can be easily reduced. Moreover, since the operator does not need to be aware of the amount of the expansion fluid to be discharged from the pressing balloon 31, the burden on the operator can be reduced.

  In the first embodiment and the second embodiment, the number of the expansion chambers is five. However, the present invention is not limited to this, and the number and size of the expansion chambers can be changed as necessary. May be.

In the second embodiment, the pressing chambers 33a to 33e are stacked. However, the expansion chambers 33a to 33e may be contracted stepwise, and the present invention is not limited to this.
In Embodiments 1 and 2, the discharge port for discharging the expansion fluid is sealed by covering with a seal from the outside. However, the discharge port is not limited to this as long as the discharge port can be sealed. Absent. For example, it is possible to form the pressing balloon partly thin and tear the part to open the expansion chamber.

DESCRIPTION OF SYMBOLS 1 Expansion part, 2 fixing | fixed part, 3 injection | pouring part, 4 strip | belt body, 5 fixing means, 6 curved plate, 7 contact surface, 8, 8a-8e, 31 press balloon, 9 position control part, 10 connection part, 11 tube , 12 connector part, 13 opening part, 14a-14e, 37 discharge port, 15a-15e, 38 seal, 16a-16e, 33a-33e expansion chamber, 17a-17d connection part, 18a-18d, 35 communication hole, 19a- 19d, 36 Check valve, 20 inlet, 21, 32 Auxiliary balloon, 34 segment, S limb, P hemostatic site.

Claims (11)

A flexible band around the hemostatic site of the limb,
Fixing means for fixing the belt body around the limb body;
A curved plate made of a material harder than the belt, at least a portion of which is curved toward the inner circumference side;
An extension portion disposed inside the curved plate,
The expansion portion has a plurality of expansion chambers formed to be expandable,
The expansion chamber is configured to expand the expansion portion by injecting expansion fluid into the expansion chamber.
Each of the plurality of expansion chambers is formed with a discharge port that can be selectively opened and closed, and by opening the discharge port, the expansion fluid injected into the expansion chamber is discharged, and the expansion portion becomes the hemostatic site. A hemostatic device, characterized in that it is configured to reduce the pressure for pressing.   The expansion portion opens the discharge port of the expansion chamber constituting the expansion portion in order from the discharge port of the expansion chamber close to the curved plate, thereby applying pressure to press the hemostatic site by the expansion portion. The hemostatic device according to claim 1, wherein the hemostatic device is decreased in stages.   The hemostatic device according to claim 1 or 2, wherein the expansion portion has a plurality of pressure balloons stacked on each other, and the expansion chamber is an internal space of the pressure balloon.   The hemostatic device according to claim 3, wherein the expansion part is integrally configured through a connection part that connects the plurality of pressing balloons to each other.   5. The hemostatic device according to claim 3, wherein the extension portion further includes a position restricting portion that is disposed so as to cover the extension portion and restricts the positions of the plurality of pressing balloons.   The hemostatic device according to claim 5, further comprising an auxiliary balloon smaller than the expansion portion between the position restricting portion and the belt body or the curved plate.   The hemostatic device according to claim 5, further comprising an auxiliary balloon smaller than the expansion portion between the plurality of pressing balloons and the position restricting portion. The expansion part has one pressing balloon formed to be expandable,
The hemostatic device according to claim 1, wherein the expansion chamber is a plurality of spaces in which the inside of the pressing balloon is laminated.   The hemostatic device according to claim 8, further comprising an auxiliary balloon smaller than the expansion portion between the pressing balloon and the band or the curved plate.   The expansion portion includes a communication hole that communicates the plurality of expansion chambers with each other, and a reverse disposed in the communication hole so that the expansion fluid is injected in one direction into the plurality of expansion chambers via the communication holes. The hemostatic device according to any one of claims 1 to 9, further comprising a stop valve.   The hemostatic device according to any one of claims 1 to 10, wherein the discharge port is sealed with a seal from the outside of each expansion chamber.