JP2018075257A - Hemostatic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hemostatic device capable of temporally and automatically reducing pressing force applied to a site whose bleeding is to be stopped, without using a dedicated instrument as a separate body from the hemostatic device.SOLUTION: A hemostatic device 10 includes: a belt body 20 to be wound around a puncture site of a wrist; a hook-and-loop fastener 30 for fixing the belt body with it wound around the wrist; a pressing part 40 connected to the belt body and pressing the puncture site; and a control mechanism 50 that controls movement of the pressing part with respect to the puncture site so as to control the pressing force of the pressing part to the puncture site. The control mechanism includes a spring mechanism 60 for transmitting force to the pressing part and having a spiral spring member, and an operation part 70 applying the force to the spring member in response to the rotating operation.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a hemostatic device for pressing a punctured site to stop bleeding.

  In recent years, a transcutaneous treatment / inspection has been performed in which a blood vessel such as an arm or a leg is punctured, an introducer sheath is introduced into the puncture site, and a medical device such as a catheter is delivered to the affected area through the lumen of the introducer sheath. Etc. are done. When such treatment / examination is performed, the operator needs to stop bleeding at the puncture site after removing the introducer sheath. In order to perform this hemostasis, a band for wrapping around a limb such as an arm or a leg, a fixing means for fixing the band in a state of being wound around the limb, and connected to the band, by injecting a fluid A hemostatic device is known that includes an expansion portion that expands and compresses a puncture site.

  As described in Patent Document 1, when using a hemostatic device, a doctor or nurse generally uses a dedicated syringe or the like separate from the hemostatic device at a port communicating with the expansion portion of the hemostatic device. The expansion portion of the hemostatic device is expanded by connecting the device and injecting fluid into the expansion portion using the dedicated device. Moreover, when decompressing the expansion part, a dedicated instrument such as a syringe is connected to the port, and the fluid is discharged from the expansion part using the dedicated instrument.

Japanese Utility Model Publication No. 7-7965

  As described above, when decompressing the extension using a dedicated device separate from the hemostatic device, doctors and nurses need to carry the dedicated device or connect the dedicated device to the hemostatic device. Take the trouble. In addition, if a dedicated instrument is lost, there is a possibility that a doctor or a nurse cannot discharge the fluid.

  The present invention has been made to solve the above-mentioned problems, and the pressing force to be applied to the site to be stopped is automatically reduced over time without using a dedicated device separate from the hemostatic device. It is an object of the present invention to provide a hemostatic device that can be made to operate.

  A hemostatic device that achieves the above-described object is provided with a band for wrapping around a portion of a limb that should be hemostatic, a fixing means for fixing the band in a state of being wound around the limb, and connected to the band A pressing part that presses the part to be hemostatic, and a control mechanism that controls the movement of the pressing part relative to the part to be hemostatic so that the pressing force of the pressing part against the part to be hemostatic can be controlled. The control mechanism includes a mainspring mechanism that transmits a force to the pressing portion and includes a spiral spring member, and an operation portion that applies a force to the spring member in accordance with a rotation operation.

  In addition, a hemostatic device that achieves the above-described object includes a band for wrapping around a site where hemostasis should be performed on a limb, a pressing unit that is connected to the band and presses the site to be hemostatic, and the band And a control mechanism for controlling the length of the belt body in a state of being wound around the limb body, the control mechanism being connected to the gripping part for gripping the belt body, the gripping part, and a spiral A spring mechanism having a spring member, and the gripping portion is configured to be able to change a gripping position for gripping the belt body in conjunction with the movement of the spring member.

  Each of the hemostatic devices automatically reduces the pressing force applied by the pressing portion to the site to be hemostatically with time according to the deformation of the spring member of the mainspring mechanism included in the control mechanism. For this reason, doctors and nurses do not need to adjust the pressing force of the pressing portion by using a dedicated device separate from the hemostatic device, so that the treatment using the hemostatic device is easily and smoothly performed. be able to.

It is the top view which looked at the hemostatic device concerning a 1st embodiment from the inner surface side. It is a schematic sectional drawing in alignment with line 2-2 in FIG. It is a schematic perspective view of the control mechanism of the hemostatic device which concerns on 1st Embodiment. It is a perspective view which expands and shows the control mechanism of the hemostatic device which concerns on 1st Embodiment. FIGS. 5A and 5B are diagrams for explaining an operation unit and a spring mechanism of the hemostatic device according to the first embodiment, in which FIG. 5A is a longitudinal sectional view of the operation unit and the spring mechanism, and FIG. It is a perspective view of a mechanism. 6A to 6C are cross-sectional views for explaining the operation of the mainspring mechanism, and are views in which a transverse cross section along the virtual plane 6A shown in FIG. 5B is viewed from the direction of the arrow 6B. It is. It is a schematic perspective view which shows the state which mounted | wore the wrist with the hemostatic device which concerns on 1st Embodiment. FIG. 8 is a schematic cross-sectional view taken along line 8-8 in FIG. 7 and shows a state in which the pressing portion is moved in a direction approaching the puncture site. FIG. 8 is a schematic cross-sectional view taken along line 8-8 in FIG. 7 and shows a state where the pressing portion is moved in a direction away from the puncture site. FIG. 10A is a perspective view of a lock mechanism included in a hemostatic device according to a modification of the first embodiment, and FIG. 10A is a diagram illustrating a state in which transmission of force to the pressing portion is suppressed by the lock mechanism. FIG. 10B is a diagram illustrating a state after the suppression of the transmission of force to the pressing portion by the lock mechanism is released. It is a perspective view of the hemostatic device concerning a 2nd embodiment. It is a perspective view which expands and shows the control mechanism of the hemostatic device which concerns on 2nd Embodiment. FIG. 13A is a schematic cross-sectional view showing a usage example of the hemostatic device according to the second embodiment, and FIG. 13A is a diagram showing a state when hemostasis is started by the hemostatic device, and FIG. It is a figure which shows a mode that the control mechanism is sending out a strip | belt body.

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

(First embodiment)
With reference to FIGS. 1-9, the hemostatic device 10 which concerns on 1st Embodiment is demonstrated. 1-6 is a figure where it uses for description of each part of the hemostatic instrument 10. FIG. 7 to 9 are diagrams for explaining an example of use of the hemostatic device 10.

  As shown in FIGS. 1 and 8, the hemostatic device 10 according to the present embodiment is a radial artery R of a wrist W (corresponding to a “limb”) for the purpose of inserting a catheter or the like for performing treatment or examination into a blood vessel. After the introducer sheath placed in the puncture site P (corresponding to “a site to be hemostatic”) formed in the above is removed, the puncture site P is used for hemostasis.

  As shown in FIGS. 1 to 3, the hemostatic device 10 includes a band 20 for wrapping around the puncture site P of the wrist W, and a hook-and-loop fastener 30 that fixes the band 20 around the wrist W (“ A control unit 50 that controls the movement of the pressing unit 40 relative to the puncture site P so that the pressing force of the pressing unit 40 against the puncture site P can be controlled. And have.

  In this specification, when the belt 20 is wound around the wrist W, the surface (mounting surface) on the side facing the body surface of the wrist W is referred to as “inner surface”, and the opposite surface is referred to as “outer surface”. ".

  The band 20 includes a belt 21 formed of a band-shaped member having flexibility, and a support plate 22 having a higher hardness than the belt 21.

  As shown in FIG. 8, the belt 21 is wound around the wrist W so as to make one round. As shown in FIG. 2, a support plate holding portion 21 a that holds the support plate 22 is formed at the center of the belt 21. In the support plate holding portion 21a, a separate band-shaped member is fused (thermal fusion, high frequency fusion, ultrasonic fusion, etc.) or adhesion (adhesion with an adhesive or a solvent) on the outer surface (or inner surface). By joining by the method, it becomes double, and the support plate 22 inserted in these gaps is held.

  A male side (or female side) 31 of a hook-and-loop fastener 30 generally called Velcro (registered trademark) or the like is disposed on the outer surface side of the belt 21 near the left end in FIG. A female side (or male side) 32 of the hook-and-loop fastener 30 is disposed on the inner surface side of the portion near the right end inside. As shown in FIG. 8, the belt 21 is wound around the wrist W and the male side 31 and the female side 32 are joined, so that the band 20 is attached to the wrist W. The means for fixing the belt 20 in a state of being wound around the wrist W is not limited to the hook-and-loop fastener 30, and may be, for example, a snap, a button, a clip, or a frame member that passes the end of the belt 21.

  The constituent material of the belt 21 is not particularly limited as long as it is a material having flexibility. Examples of such materials include polyvinyl chloride, polyethylene, polypropylene, polybutadiene, polyolefins such as ethylene-vinyl acetate copolymer (EVA), polyesters such as polyethylene terephthalate (PET), and polybutylene terephthalate (PBT). And various thermoplastic elastomers such as polyvinylidene chloride, silicone, polyurethane, polyamide elastomer, polyurethane elastomer, and polyester elastomer, or any combination thereof (blend resin, polymer alloy, laminate, etc.).

  Further, at least a portion of the belt 21 that overlaps the pressing portion 40 is preferably substantially transparent, but is not limited to being transparent, and may be translucent or colored and transparent.

  As shown in FIG. 2, the support plate 22 is held by the belt 21 by being inserted between the support plate holding portions 21 a formed to be double of the belt 21. The support plate 22 has a plate shape in which at least a part thereof is curved toward the inner surface side (mounting surface side). The support plate 22 is made of a material harder than the belt 21, and maintains a substantially constant shape.

  The support plate 22 has a shape that is long in the longitudinal direction of the belt 21. The central portion 22a in the longitudinal direction of the support plate 22 is almost flat and has a flat plate shape. Both sides of the central portion 22a are directed toward the inner peripheral side and in the longitudinal direction of the belt 21. A first curved portion 22b (left side in FIG. 2) and a second curved portion 22c (right side in FIG. 2) that are curved along (the circumferential direction of the wrist W) are formed.

  The constituent material of the support plate 22 is, for example, acrylic resin, polyvinyl chloride (particularly hard polyvinyl chloride), polyethylene, polypropylene, polyolefin such as polybutadiene, polystyrene, poly- (4-methylpentene-1), polycarbonate, ABS. Resin, Polymethylmethacrylate (PMMA), Polyacetal, Polyacrylate, Polyacrylonitrile, Polyvinylidene Fluoride, Ionomer, Acrylonitrile-Butadiene-Styrene Copolymer, Polyethylene Terephthalate (PET), Polybutylene Terephthalate (PBT), Polyester, Butadiene -Fluorine resin such as styrene copolymer, aromatic or aliphatic polyamide, polytetrafluoroethylene, and the like.

  As with the belt 21, the support plate 22 is preferably substantially transparent at a portion overlapping the pressing portion 40, but is not limited to being transparent, and may be translucent or colored and transparent. Note that the support plate 22 may not have a non-curved portion like the central portion 22a, that is, may be curved over its entire length.

  Next, the pressing unit 40 and the control mechanism 50 will be described.

  As shown in FIG. 8, the pressing unit 40 presses the puncture site P of the wrist W to compress the puncture site P and stop bleeding. The control mechanism 50 controls the movement of the pressing unit 40 with respect to the puncture site P so that the pressing force with which the pressing unit 40 presses the puncture site P decreases with time.

  As shown in FIG. 2, the pressing portion 40 is configured integrally with a rack portion 47 that constitutes a rack-pinion mechanism described later.

  The pressing portion 40 has a substantially rectangular parallelepiped shape in which a pressing surface 40 a that presses the puncture site P is formed on the surface facing the wrist W. The shape of the pressing portion 40 is not particularly limited as long as the puncture site P can be pressed, and may be, for example, a spherical shape, a shape having a curved portion in part, or a cube shape.

  For example, the pressing portion 40 is preferably formed of a flexible material that does not cause pain even when the pressing portion 40 touches the body surface of the wrist W. As such a material, for example, a soft resin material, a sponge-like substance, an elastic material, various rubbers, the same material as the constituent material of the band 20 described above, and the like can be used. Further, for example, it is also possible to use as the pressing portion 40 what is encapsulated with fluid or gel in a bag-shaped member.

  When the pressing portion 40 is configured integrally with the rack portion 47 as in the present embodiment, for example, the pressing portion 40 is bonded, fused, welded, or the like to the end portion of the rack portion 47 located on the wrist W side. Can be attached by the method.

  As shown in FIGS. 3 and 4, the control mechanism 50 includes a mainspring mechanism 60 that transmits mechanical power to and from the pressing portion 40, a gear group 80, and a rack-pinion mechanism (a rack portion 47 and a pinion portion 87. ), An operation unit 70 for operating the mainspring mechanism 60, and a predetermined adjustment mechanism 90.

  The pressing portion 40 is mechanically connected to the mainspring mechanism 60 via a gear group 80 and a rack-pinion mechanism. As will be described later, the control mechanism 50 moves the pressing portion 40 by using power generated with the deformation of the spring member 61 included in the mainspring mechanism 60.

  As shown in FIGS. 2 and 3, a case 55 that accommodates each component of the control mechanism 50 is disposed on the outer surface of the band 20. In the case 55, a mainspring mechanism 60, a gear group 80, a pinion part 87, a part of the rack part 47, and an adjustment mechanism 90 are arranged.

  The case 55 is configured by a box-shaped member having a space in which each member of the control mechanism 50 can be accommodated. As shown in FIG. 3, an opening 56 for inserting the operation unit 70 into the case 55 is formed on the upper surface of the case 55 (the surface not facing the outer surface of the band 20). In addition, there is no restriction | limiting in particular about the material of a case 55, a magnitude | size, a shape, the attachment method to the strip | belt body 20, etc.

  As shown in FIG. 2, the vicinity of one end portion on the side where the pressing portion 40 of the rack portion 47 is disposed protrudes from the bottom surface of the case 55 (the surface on the side facing the outer surface of the band body 20 in the case 55). Further, the vicinity of one end portion of the rack portion 47 passes through the band body 20 through a hole 20 a formed in the band body 20.

  The mainspring mechanism 60 provided in the control mechanism 50 will be described.

  As shown in FIGS. 4, 5 </ b> A, and 5 </ b> B, the mainspring mechanism 60 accommodates a spiral spring member 61, a support shaft 62 around which the spring member 61 is wound, and the spring member 61. And a rotating body 63.

  As shown in FIGS. 5A and 6A, the spring member 61 extends spirally around the axis of the support shaft 62. One end portion 61a of the spring member 61 is fixed to the support shaft 62 via a fixing portion 64a. Further, the other end portion 61 b of the spring member 61 located on the opposite side of the one end portion 61 a of the spring member 61 in the direction of tightening the spring member 61 includes a regulating wall 63 c and a fixing portion 64 b disposed inside the rotating body 63. It is fixed through. The other end 61b of the spring member 61 is provided with a bent shape so as to be folded back on the opposite side to the winding direction (the clockwise direction shown in FIG. 6A). The length, material, shape, etc. of the spring member 61 are not particularly limited.

  As shown in FIGS. 5A and 5B, the support shaft 62 passes through the rotating body 63 and the first transmission gear 81 attached to the rotating body 63 in the height direction. The support shaft 62 is disposed at a substantially central position of the rotating body 63 in the plan view of the rotating body 63.

  The rotating body 63 includes a groove portion 63a into which the convex portion 72b included in the operation portion 70 is inserted, a space portion 63b in which the spring member 61 can be accommodated, and a regulating wall 63c to which the other end portion 61b of the spring member 61 is fixed (see FIG. 6 (A)).

  A spring member 61 is accommodated on the bottom side (the lower side shown in FIG. 5A) of the space 63b of the rotating body 63. The rotating body 63 has a substantially cylindrical shape on each of the bottom side and the upper side (upper side shown in FIG. 5A) where the groove 63a is formed. The bottom side of the rotating body 63 has a larger outer diameter and inner diameter than the upper side of the rotating body 63.

  The groove 63a of the rotating body 63 is formed so that the width on the upper side is small, and the width on the lower side is larger than the width on the upper side. When the groove part 63a is moved from the upper side to the groove part 63a so as to approach the operation part 70 along the substantially vertical direction, the convex part 72b of the operation part 70 is inserted into the groove part 63a. When the operating part 70 is rotated with the convex part 72b of the operating part 70 inserted to the lower side of the groove part 63a, the rotating body 63 comes into contact with the convex part 72b of the operating part 70 and the wall part around the groove part 63a. As a result, it rotates in conjunction with the rotation of the operation unit 70.

  The shape, size, number, and the like of the groove 63a are not particularly limited. Although not shown, in the present embodiment, three groove portions 63 a are formed along the circumferential direction of the rotating body 63. By forming the plurality of groove portions 63a in the rotating body 63 in this way, it is possible to smoothly transmit the rotational force from the operating unit 70 to the rotating body 63, and the operating unit 70 is inadvertently inadvertently transmitted. It is possible to prevent dropping off.

  In the present embodiment, the support shaft 62 is fixed to the case 55 attached (connected) to the band body 20. As shown in FIG. 5A, the rotating body 63 is disposed with a gap g1 between the rotating body 63 and the support shaft 62 penetrating the rotating body 63. Further, the first transmission gear 81 attached to the rotating body 63 is disposed with a gap g <b> 2 between the first transmission gear 81 and the support shaft 62 that penetrates the first transmission gear 81, similarly to the rotating body 63. Accordingly, the rotating body 63 and the first transmission gear 81 can rotate around the support shaft 62 with the support shaft 62 as a rotation center.

  The rotating body 63 is, for example, a holding member such as a pedestal (not shown) arranged in the case 55, a groove formed in the case 55 (not shown), or the like so as to be rotatable in the case 55. Can be arranged. Further, for example, a predetermined bearing (for example, a ball bearing or a fluid bearing) is used as a mechanism for preventing the support shaft 62 from rotating in conjunction with the rotation of the rotating body 63 and the rotation of the first transmission gear 81. Is possible. By using the above-mentioned bearing, a predetermined gap g2 is maintained between the support shaft 62 and the first transmission gear 81 while a predetermined gap g1 is maintained between the support shaft 62 and the rotating body 63, thereby supporting the support shaft. It is possible to suitably prevent the 62 from rotating in conjunction with the rotation of the rotating body 63 and the rotation of the first transmission gear 81.

  The spring member 61 can be wound around the support shaft 62 by a rotation operation (winding operation) of the rotating body 63 using the operation unit 70 described later. Since the first transmission gear 81 is connected to the rotating body 63, it rotates in conjunction with the rotating operation of the rotating body 63.

  With reference to FIG. 6, the tightening and unwinding (deployment) operations of the spring member 61 will be described.

  As shown in FIG. 6A, before the spring member 61 is tightened, the spring member 61 is disposed so as to be loosely wound around the support shaft 62 in a spiral shape. From this state, when the rotating body 63 is rotated using the operation unit 70 (for example, rotated in the clockwise t1 direction), the spring member 61 is operated to rotate the rotating body 63 as shown in FIG. Along with this, the support shaft 62 is wound around the direction of the arrow t1 ′. As described above, in the spring member 61, one end portion 61a of the spring member 61 is fixed to the support shaft 62 via the fixing portion 64a, and the other end portion 61b of the spring member 61 is rotated via the fixing portion 64b. Since it is being fixed to the control wall 63c of 63, when the rotary body 63 rotates, it will be easily wound around the support shaft 62.

  Further, when the rotating body 63 is rotated using the operation unit 70 as described above, the first transmission gear 81 connected to the rotating body 63 is also rotated. The rotation of the first transmission gear 81 is converted into movement of the pressing portion 40 (approach movement to the puncture site P) via the gear group 80 shown in FIG.

  As shown in FIG. 6C, when the spring member 61 is wound around the support shaft 62 and no force is applied from the outside (when the operation by the operation unit 70 is released), the spring member 61 is tightened. It unfolds to unravel, that is, to return to the state before being tightened. At this time, the spring member 61 presses the other end portion 61b of the spring member 61 bent toward the side opposite to the tightening direction against the regulating wall 63c as indicated by an arrow f in the drawing (the spring member 61 is developed). The direction of action of the force generated at this time is indicated by an arrow t2 'in the figure). The rotating body 63 receives a force generated by the spring member 61 via the other end portion 61b of the spring member 61, thereby rotating in a direction opposite to the direction rotated when the spring member 61 is tightened (for example, counterclockwise t2). Direction).

  When the rotating body 63 rotates in conjunction with the expansion of the spring member 61 as described above, the first transmission gear 81 connected to the rotating body 63 also rotates. The rotation of the first transmission gear 81 is converted into movement of the pressing portion 40 (moving away from the puncture site P) via the gear group 80 shown in FIG.

  As shown in FIGS. 4 and 5A, the operation unit 70 is used when rotating the rotating body 63 and the first transmission gear 81 of the mainspring mechanism 60. The operation unit 70 includes a knob portion 71 that is gripped by fingers and the like, and a main body portion 72 that extends substantially vertically from the knob portion 71.

  As shown in FIG. 5A, the main body 72 of the operation unit 70 is formed in a hollow shape so as to accommodate the support shaft 62 and the upper portion of the rotating body 63 (the portion where the groove 63a is formed). In addition, an opening 72 a into which the upper portion of the support shaft 62 and the rotating body 63 can be inserted and a protrusion 72 b protruding toward the inside of the opening 72 a are formed at the lower end of the main body 72. As described above, the convex portion 72 b of the operation unit 70 can be inserted into the groove portion 63 a of the rotating body 63.

  Note that the shape, size, number, and the like of the convex portions 72b are not particularly limited. Although not shown in the drawings, in the present embodiment, three convex portions 72b, which are the same number as the number of the groove portions 63a, are formed on the main body portion 72 of the operation portion 70.

  The operation unit 70 may be configured to be detachable from the rotating body 63 as in the present embodiment, or may be configured to be detachable from the rotating body 63 (integrated structure with the rotating body 63). In addition, as the attachment / detachment structure, for example, a structure in which the operation unit 70 and the rotating body 63 are mechanically attached / detached by screwing may be employed.

  As shown in FIG. 4, the gear group 80 has four gears: a first transmission gear 81, a second transmission gear 82, a third transmission gear 83, and a fourth transmission gear 84.

  The first transmission gear 81 is integrally connected to the rotating body 63 and transmits the rotation operation of the rotating body 63 to the second transmission gear 82.

  The second transmission gear 82 is disposed at a position that meshes with the first transmission gear 81. The third transmission gear 83 is configured integrally with the second transmission gear 82, and transmits the rotational operation received by the second transmission gear 82 from the first transmission gear 81 to the fourth transmission gear 84. The member (hereinafter referred to as “intermediate gear”) in which the second transmission gear 82 and the third transmission gear 83 are formed includes an annular portion in which a tooth portion forming the second transmission gear 82 is formed on the outer circumferential surface, 3 has a shaft portion on which a tooth portion forming the transmission gear 83 is formed, and a hub portion connecting the annular portion and the shaft portion.

  The fourth transmission gear 84 is formed in the pinion part 87. The fourth transmission gear 84 is disposed at an end portion of the pinion portion 87 that is located on the third transmission gear 83 side.

  The third transmission gear 83 and the fourth transmission gear 84 are helical gears. In addition, the third transmission gear 83 and the fourth transmission gear 84 are arranged so that their rotational axes are orthogonal to each other. For this reason, the freedom degree of the design of the layout of the gear group 80 in the case 55 is increased, and the gear group 80 can be densely arranged in the case 55, so that the case 55 can be reduced in size.

  The rack portion 47 and the pinion portion 87 constituting the rack-pinion mechanism are mechanically connected to each other via the tooth portion 47a of the rack portion 47 and the tooth portion 87a of the pinion portion 87.

  The operation of the mainspring mechanism 60 and the gear group 80 will be described with reference to FIG.

  When a doctor or nurse uses the operation unit 70 to rotate the rotating body 63 of the mainspring mechanism 60 in the arrow T direction (clockwise), the rotating body 63 rotates in the arrow t1 direction. As described above, the spring member 61 of the mainspring mechanism 60 is wound around the support shaft 62 as the rotating body 63 rotates (see FIGS. 6A and 6B).

  When the rotating body 63 rotates, the first transmission gear 81 connected to the rotating body 63 rotates in the arrow t1 direction together with the rotating body 63. When the first transmission gear 81 rotates, the rotation of the first transmission gear 81 is transmitted to the pinion portion 87 via the second transmission gear 82, the third transmission gear 83, and the fourth transmission gear 84 (each transmission gear). The rotation direction of 82, 83, 84 is the direction indicated by the arrow t1 in the figure).

  When rotation is transmitted from the gear group 80, the pinion part 87 rotates the pinion part 87 itself, thereby moving the rack part 47 downward as shown by an arrow d in the figure. When the rack part 47 moves, the pressing part 40 attached to the rack part 47 moves toward the puncture site P (see FIG. 8). The pressing unit 40 applies a pressing force (compression force) to the puncture site P by pressing the pressing surface 40a against the puncture site P and its peripheral portion.

  When the spring member 61 of the mainspring mechanism 60 is wound around the support shaft 62 and no force is applied from the outside, the spring member 61 expands in the space 63b of the rotating body 63 (see FIG. 6C). The rotating body 63 and the first transmission gear 81 connected to the rotating body 63 rotate in the arrow t2 direction when the spring member 61 is deployed. Further, when the first transmission gear 81 rotates, the rotation of the first transmission gear 81 is transmitted to the pinion portion 87 via the second transmission gear 82, the third transmission gear 83, and the fourth transmission gear 84 (each The rotation direction of the transmission gears 82, 83, 84 is the direction indicated by the arrow t2 in the figure).

  When the rotation is transmitted from the gear group 80, the pinion portion 87 rotates the pinion portion 87 itself, thereby moving the rack portion 47 upward in the drawing as indicated by an arrow u. When the rack portion 47 moves, the pressing portion 40 attached to the rack portion 47 moves away from the puncture site P (see FIG. 9). Thereby, the press part 40 cancels | releases the press to the puncture site | part P and its peripheral part via the press surface 40a.

  Next, the adjustment mechanism 90 provided in the control mechanism 50 will be described.

  The adjustment mechanism 90 has a function of controlling the movement of the spring member 61 provided in the mainspring mechanism 60.

  As shown in FIG. 4, the adjustment mechanism 90 includes an adjustment gear unit 91 that adjusts the rotation of the rotating body 63, and a rotation control mechanism 95 that controls the rotation of the adjustment gear unit 91. The adjustment gear portion 91 is a member corresponding to a so-called escape wheel used in a general spring type timepiece or the like, and the rotation control mechanism 95 is a member corresponding to a so-called balance.

  The adjustment gear unit 91 includes a first adjustment gear 92 that meshes with the first transmission gear 81 of the rotating body 63, and a second adjustment gear 93 whose rotation is controlled by the rotation control mechanism 95.

  The first adjustment gear 92 and the second adjustment gear 93 are integrally configured. For this reason, the rotation of the first adjustment gear 92 and the rotation of the second adjustment gear 93 are interlocked.

  The rotation control mechanism 95 controls the rotation of the first adjustment gear 92 by controlling the rotation of the second adjustment gear 93. Further, the rotation control mechanism 95 controls the rotation of the rotating body 63 by controlling the rotation of the first adjustment gear 92 and the rotation of the second adjustment gear 93.

  The rotation control mechanism 95 regulates the rotating operation of the rotating body 63 so that the rotating body 63 rotates at a constant speed when the spring member 61 is deployed and the rotating body 63 rotates. The pressing unit 40 operates so that the speed of moving away from the puncture site P becomes a constant speed by restricting the rotational speed of the rotating body 63.

  The rotation control mechanism 95 includes a pendulum body 96 having a first adjustment tooth 96a and a second adjustment tooth 96b that mesh with a tooth portion of the second adjustment gear 93, and the pendulum body 96 has one direction different from the one direction. And a pendulum spring 98 that rotates alternately in the other direction.

  A pendulum spring 98 is connected to an end of the pendulum body 96 that is different from the end where the first adjustment tooth 96a and the second adjustment tooth 96b are provided. The pendulum body 96 is alternately swung in one direction by a pendulum spring 98 and in another direction different from the one direction. The first adjustment teeth 96 a and the second adjustment teeth 96 b of the pendulum body 96 are alternately meshed with the second adjustment gear 93 in conjunction with the swing of the pendulum body 96. By this operation, the rotation control mechanism 95 can control the rotation of the second adjustment gear 93.

  Next, a usage example of the hemostatic device 10 according to the present embodiment will be described.

  As shown in FIG. 7, when puncturing the radial artery R of the wrist W of the right hand, the puncture site P is at a position offset toward the thumb side. Usually, an introducer sheath is placed at the puncture site P. The band 20 is wound around the wrist W in a state where the introducer sheath is indwelled. At this time, the male part 31 and the female side 32 of the hook-and-loop fastener 30 are brought into contact with each other after the pressing part 40 and the band body 20 are aligned so that the pressing part 40 is disposed at a position away from the puncture site P. The band 20 is attached to the wrist W. When the hemostatic device 10 is attached to the wrist W, the pressing portion 40 is disposed at a non-pressing position that is retracted from the puncture site P.

  Referring to FIG. 8, the doctor or nurse performs a pressing operation in a state where band 20 is attached to wrist W. As shown in FIG. 4, the doctor or nurse uses the operation unit 70 to rotate the rotating body 63 to wind the spring member 61 around the support shaft 62. Further, when the rotating body 63 is rotated, the pressing portion 40 moves toward the puncture site P in conjunction with the rotating operation of the rotating body 63 (arrow d in FIG. 8). The doctor or nurse stops the rotation of the operation unit 70 after a predetermined pressing force is applied to the puncture site P by the pressing unit 40.

  The doctor or nurse can adjust the pressing force applied to the puncture site P at the initial stage of hemostasis to a desired level by adjusting the amount of tightening of the spring member 61. When an excessive pressing force is applied to the puncture site P, the doctor or nurse adjusts the pressing force by loosening the winding of the spring member 61 using the operation unit 70. Is also possible.

  In addition, since a doctor or a nurse can start the hemostasis, the operation unit 70 can be used to move the pressing unit 40 and tighten the spring member 61 by a simple operation of rotating the rotating body 63. Preparatory work for starting hemostasis can be performed smoothly and quickly.

  The doctor or nurse presses the pressing portion 40 against the puncture site P, and then removes the introducer sheath from the puncture site P.

  The doctor or nurse removes the operation unit 70 from the rotating body 63 after removing the introducer sheath. When the operation unit 70 is removed from the rotating body 63, the hemostatic device 10 starts a decompression operation.

  As shown in FIG. 9, when the pressure reducing operation is started, the spring member 61 is deployed, and the pressing portion 40 moves away from the puncture site P. Since the mechanical force generated when the spring member 61 is deployed is transmitted to the pressing portion 40 via the mainspring mechanism 60, the movement of the pressing portion 40 can be accurately controlled. Therefore, the hemostatic device 10 can more precisely adjust the decrease in the pressing force that the pressing portion 40 applies to the puncture site P.

  In particular, the hemostatic device 10 can easily control the quantitative reduction of the pressing force as compared with the hemostatic device including a pressing portion that applies a compression force by expansion using a fluid, and also has a power transmission mechanism. However, since a mechanical member (for example, a molded product) is combined, a difference in decompression protocol due to a variation in product performance for each instrument is unlikely to occur. For this reason, doctors and nurses can greatly reduce the burden on the procedure using the hemostatic device 10.

  Further, since the mechanical force generated when the spring member 61 is deployed is converted into the movement of the pressing portion 40 via the gear group 80, the movement of the pressing portion 40 can be controlled more accurately. it can.

  After the hemostasis of the puncture site P is completed, the hemostatic device 10 is removed. The hemostatic device 10 is removed from the wrist W by peeling off the male side 31 and the female side 32 of the hook-and-loop fastener 30.

  As described above, the hemostatic device 10 according to the present embodiment includes the band 20 for wrapping around the puncture site P of the wrist W, the hook-and-loop fastener 30 that fixes the band 20 around the wrist W, A control unit that is connected to the band body 20 and that controls the movement of the pressing unit 40 relative to the puncture site P so as to control the pressing force of the pressing unit 40 against the puncture site P. 50. The control mechanism 50 includes a mainspring mechanism 60 that transmits a force to the pressing portion 40 and has a spiral spring member 61 and an operation portion 70 that applies a force to the spring member 61 in accordance with a rotation operation. doing.

  The hemostatic device 10 automatically reduces the pressing force that the pressing portion 40 applies to the puncture site P over time according to the deformation of the spring member 61 of the mainspring mechanism 60 provided in the control mechanism 50. For this reason, doctors and nurses do not need to adjust the pressing force of the pressing portion 40 using a dedicated device separate from the hemostatic device 10, so that the treatment using the hemostatic device 10 can be performed easily and smoothly. Can be implemented.

  The control mechanism 50 includes an adjustment mechanism 90 that controls the movement of the spring member 61. As a result, the hemostatic device 10 can control the movement of the pressing portion 40 using the force generated when the spring member 61 is deployed to a predetermined speed, so that a desired decompression protocol can be easily realized. Can do.

  Further, the control mechanism 50 includes a gear group 80 that converts the movement of the spring member 61 into the movement of the pressing portion 40 relative to the puncture site P. For this reason, the control mechanism 50 can more accurately control the movement of the pressing portion 40 relative to the puncture site P via the gear group 80. Therefore, the hemostatic device 10 can more accurately control the pressing force with respect to the puncture site P over time.

(Modification)
FIG. 10A and FIG. 10B are views showing a hemostatic device according to a modification of the above-described embodiment. In the description of the modification, members having substantially the same configurations as those of the above-described embodiment are denoted by the same reference numerals, and a description thereof is partially omitted.

  In the hemostatic device according to the modification, the control mechanism 50 is provided with a lock mechanism 110 that suppresses transmission of force from the mainspring mechanism 60 to the pressing portion 40. In FIGS. 10A and 10B, only a part of the configuration of the control mechanism 50 is shown for the sake of simplicity.

  The lock mechanism 110 has a function of controlling the timing at which the hemostatic device starts the decompression operation. Specifically, the locking mechanism 110 suppresses the transmission of force from the mainspring mechanism 60 to the pressing portion 40, so that the pressing portion 40 moves away from the puncture site P for a certain period immediately after the start of hemostasis. To regulate.

  The lock mechanism 110 according to this modification has substantially the same configuration as each member (spring mechanism 60, gear group 80, rack portion 47, pinion portion 87, operation portion 70) included in the control mechanism 50 described above. Members (spring mechanism 160, gear group 180, rack part 147, pinion part 187, operation part 170) are provided.

  However, the rack portion 147 of the lock mechanism 110 is provided with a restriction portion 148 for restricting the rotation of the second transmission gear 82 and the third transmission gear 83 of the gear group 80. Since the configuration and operation other than the restriction unit 148 are the same as those described in the control mechanism 50, the description thereof is omitted.

  As shown in FIG. 10A, the restricting portion 148 of the rack portion 147 receives the second transmission as the rack portion 147 moves downward in the drawing in conjunction with the rotation of the mainspring mechanism 160 on the lock mechanism 110 side. The intermediate gear provided with the gear 82 and the third transmission gear 83 is hooked. For example, the restriction portion 148 of the rack portion 147 is hooked to the hub portion of the intermediate gear. The intermediate gear provided with the second transmission gear 82 and the third transmission gear 83 is restricted from rotating while the restriction portion 148 of the rack portion 147 is hooked. Thereby, the movement of the pressing part 40 is restricted.

  The restricting portion 148 is formed of a bent hook-shaped member that can be hooked (latched) to the intermediate gear from above the intermediate gear, but the specific shape, size, and the like are particularly limited. Not.

  As shown in FIG. 10B, the intermediate gear provided with the second transmission gear 82 and the third transmission gear 83 is operated by the spring mechanism 160 on the lock mechanism 110 side so that the intermediate gear and the restricting portion of the rack portion 147 are operated. When the catch with 148 is released, the rotation operation is started. The pressing unit 40 starts moving away from the puncture site P in conjunction with the rotation of the intermediate gear. Thereby, the press part 40 reduces the compression force provided with respect to the puncture site | part P with time.

  As described above, the control mechanism 50 includes the lock mechanism 110 that suppresses transmission of force from the mainspring mechanism 60 to the pressing portion 40. For this reason, the control mechanism 50 can perform control so that pressure reduction is started after a predetermined time has elapsed from the start of hemostasis. Therefore, the hemostatic device 10 can maintain a constant pressing force against the puncture site P for a predetermined time from the start of hemostasis.

  In addition, although the usage example which maintains the compression force with respect to the puncture site P for a certain period from the start of hemostasis has been described, for example, by pressing the lock mechanism 110 at any timing when hemostasis is performed, You may adjust so that the pressing force which the part 40 provides with respect to the puncture site | part P may be maintained constant.

  In the description of the modification, only the main parts of the control mechanism 50 and the lock mechanism 110 are shown, but other detailed structures (for example, the shape and arrangement of the case 55 that accommodates the control mechanism 50) are the lock mechanism There is no particular limitation as long as the operation of 110 can be permitted.

  Further, the specific structure of the lock mechanism 110 is not particularly limited as long as the force transmission from the mainspring mechanism 60 to the pressing portion 40 can be suppressed. For example, the movement direction of the rack portion 147 of the lock mechanism 110 may be movable in a direction other than the vertical direction, and the lock may be released in conjunction with the movement of the rack portion 147 retracted from the control mechanism 50. The rack portion 147 of the mechanism 110 (or another member of the lock mechanism 110) is hooked on a member other than the intermediate gear of the gear group 80 (including mechanical connection and connection), thereby restricting the movement of the pressing portion 40. You may do it.

(Second Embodiment)
Next, a hemostatic device 200 according to a second embodiment of the present invention will be described with reference to FIGS. In the description of the second embodiment, members having substantially the same configuration as those of the first embodiment described above are denoted by the same reference numerals, and a description thereof is partially omitted.

  In the hemostatic device 10 according to the first embodiment described above, the control mechanism 50 controls the movement of the pressing portion 40 so that the pressing force applied by the pressing portion 40 to the puncture site P decreases with time. It is composed. On the other hand, in the hemostatic device 200 according to the second embodiment, the control mechanism 250 controls the length of the band body 220 in a state where the band body 220 is wound around the wrist W, so that the pressing portion 40 is against the puncture site P. The pressing force to be applied is configured to decrease with time.

  As shown in FIGS. 11 to 13, the hemostatic device 200 includes a band body 220 for wrapping around the puncture site P of the wrist W, and a pressing portion 240 connected to the band body 220 and pressing the puncture site P. And a control mechanism 250 for controlling the length of the band 220 in a state where the band 220 is wound around the wrist W. 12, the control mechanism 250 includes a gripping portion 270 that grips the band 220, a spring mechanism 260 that is connected to the gripping portion 270 and has a spiral spring member 61, and a spring member 61. And an adjustment mechanism 290 for controlling the movement of.

  As shown in FIGS. 11 and 13, a support plate 225 is connected to the band 220. A pressing portion 240 and a control mechanism 250 are disposed on the support plate 225. The band 220 can be made of a material having flexibility, and can be made of the same material as the belt 21 described above, for example. The support plate 225 can be made of a relatively hard material capable of holding the pressing portion 240 and the control mechanism 250, and can be made of the same material as the support plate 22 described above, for example.

  The band 220 and the support plate 225 can be connected by a method such as adhesion or fusion. The support plate 225 can be formed in a shape extending linearly in the longitudinal direction as shown in FIG. 13A. For example, a part or the whole of the support plate 225 is similar to the support plate 22 described above. The shape may be curved along the circumferential direction of the wrist W.

  The pressing part 240 has a pressing surface 240a that can contact the puncture site P of the wrist W and its peripheral part. The pressing part 240 can be made of, for example, the same material and shape as the pressing part 40 described above.

  Next, the control mechanism 250 will be described.

  As illustrated in FIG. 12, the control mechanism 250 includes a mainspring mechanism 260, a gear group 280, and an adjustment mechanism 290. The basic structure of the control mechanism 250 is substantially the same as the control mechanism 50 described above. However, the control mechanism 250 does not have a rack-pinion mechanism (the rack portion 47 and the pinion portion 187) that converts the force generated when the spring member 61 is deployed into the movement of the pressing portion 240. Instead of the rack-pinion mechanism, the control mechanism 250 has a grip 270 that converts the force generated when the spring member 61 is deployed into the movement of the belt 20.

  As shown in FIG. 12, the grip portion 270 includes a first roller 271 and a second roller 272 that grip the band body 220 by sandwiching the band body 220. Each of the rollers 271 and 272 can change the gripping position for gripping the belt 220 by rotating in conjunction with the movement of the belt 20 between the rollers 271 and 272.

  A fourth transmission gear 284 that forms a gear group 280 is formed on the first roller 271. The fourth transmission gear 284 is provided at the end of the first roller 271 arranged on the third transmission gear 83 side.

  When a doctor or a nurse performs hemostasis using the hemostatic device 200, as shown by an arrow T in FIG. 12 and FIG. 13 (A), the finger and the nurse pull out the belt 220 from between the rollers 271 and 272. Do the pulling operation by etc. When the belt 220 is pulled, the first roller 271 rotates as indicated by an arrow t1 in the drawing. When the first roller 271 rotates, the fourth transmission gear 284 arranged on the first roller 271 rotates together with the first roller 271. The rotation of the fourth transmission gear 284 is transmitted to the rotating body 63 of the mainspring mechanism 60 via the third transmission gear 83, the second transmission gear 82, and the first transmission gear 81 (each transmission gear 81, 82, 83). Is the direction indicated by the arrow t1 in the figure).

  When the rotation is transmitted through the transmission gears 81, 82, 83, and 284, the rotating body 63 of the mainspring mechanism 60 rotates around the support shaft 62. The spring member 61 of the mainspring mechanism 60 is wound around the support shaft 62 along the direction indicated by the arrow t1 'in the drawing as the rotating body 63 rotates. The direction in which the spring member 61 is wound is the same as the direction described in the above-described embodiment (see FIGS. 6A and 6B).

  As shown in FIG. 13A, the doctor or nurse adjusts the length of the pull-out portion 221 drawn from between the rollers 271 and 272 in the band 220, so that the pressing portion 240 is placed on the puncture site P. It is possible to adjust the compression force to be applied. The doctor or nurse can press the pressing portion 240 more strongly against the puncture site P by increasing the length of the drawer portion 221 of the band 220.

  The grip part 270 (the first roller 271 and the second roller 272) is preferably in a state in which the band body 220 is wound around the wrist W by gripping the band body 220 while the hemostasis by the hemostatic device 200 is performed. Functions as a fixing means for maintaining Since the movement of the belt 220 is controlled by the grip portion 270, the belt 220 is unlikely to be moved inadvertently unless a tensile force or the like is separately applied from the outside.

  After starting the hemostasis using the hemostatic device 200, the doctor or nurse releases the gripping of the band body 220 with fingers or the like. The spring member 61 of the mainspring mechanism 60 is unfolded so as to be unwound within the rotating body 63 in the same manner as described in the above-described embodiment when the gripping of the band body 220 by fingers or the like is released (as in the above-described embodiment). (See FIG. 6C). When the spring member 61 is deployed, the rotating body 63 and the first transmission gear 81 rotate. The rotation of the first transmission gear 81 is transmitted to the first roller 271 via the second transmission gear 82, the third transmission gear 83, and the fourth transmission gear 284 (for each of the transmission gears 81, 82, 83, 284). The direction of rotation is the direction opposite to the direction indicated by arrow t1 in the figure).

  When the rotation of the first roller 271 is transmitted from the spring member 61 through the transmission gears 81, 82, 83, and 284, as shown by the arrow t2 in FIG. Rotate to retract between 272. Thereby, since the length of the part wound around the wrist W in the belt body 20 becomes long, the pressing force that the pressing part 240 applies to the puncture site P is reduced. Since the length of the portion of the band 20 wound around the wrist W increases with time in conjunction with the deployment of the spring member 61, the pressing force applied to the puncture site P by the pressing portion 240 is time-dependent. Decrease.

  The adjustment mechanism 290 included in the control mechanism 250 controls the movement of the spring member 61 so that the rotating body 63 rotates at a desired speed, similarly to the adjustment mechanism 90 of the above-described embodiment.

  In addition, each member with which the control mechanism 250 is provided can be arrange | positioned in the strip | belt body 220 in the state accommodated in the predetermined case 255 as shown in FIG. 11 and FIG.

  As described above, the hemostatic device 200 according to this embodiment includes the band body 220 for wrapping around the puncture site P of the wrist W, and the pressing unit 240 connected to the band body 220 and pressing the puncture site P. And a control mechanism 250 that controls the length of the band 220 in a state where the band 220 is wound around the wrist W. The control mechanism 250 includes a gripping portion 270 that grips the band 220 and a spring mechanism 260 that is connected to the gripping portion 270 and has a spiral spring member 61. The gripping portion 270 is configured to be able to change the gripping position for gripping the band 220 in conjunction with the movement of the spring member 61.

  The hemostatic device 200 automatically reduces the pressing force that the pressing portion 240 applies to the puncture site P over time according to the deformation of the spring member 61 of the mainspring mechanism 260 provided in the control mechanism 250. For this reason, doctors and nurses do not need to adjust the pressing force of the pressing portion 240 using a dedicated device separate from the hemostatic device 200, so that the treatment using the hemostatic device 200 can be performed easily and smoothly. Can be implemented.

  Further, the control mechanism 250 has an adjustment mechanism 290 that controls the movement of the spring member 61. As a result, the hemostatic device 200 can control the movement of the pressing portion 240 using the force generated when the spring member 61 is deployed to a predetermined speed, so that a desired decompression protocol can be easily realized. Can do.

  In addition, the control mechanism 250 includes a gear group 280 that converts the movement of the spring member 61 into a movement in which the grip portion 270 feeds the band 220. Therefore, the control mechanism 50 can more accurately control the movement of the band 220 through the gear group 280. Therefore, the hemostatic device 200 can more accurately control the pressing force with respect to the puncture site P over time.

  Note that the hemostatic device 200 according to the second embodiment includes the lock mechanism 110 (see FIGS. 10A and 10B) in the control mechanism 250, similarly to the hemostatic device 10 according to the first embodiment. It can be configured as follows. By providing the control mechanism 250 with the lock mechanism 110, the control mechanism 50 performs control to start depressurization after the elapse of a predetermined time from the start of hemostasis, or keeps the compression force constant for a predetermined time at an arbitrary timing. And so on.

  In addition, the hemostatic device 200 according to the second embodiment is configured such that the rotating body 63 is rotated at the start of hemostasis in conjunction with the operation of pulling the belt body 20. However, the hemostatic device 200 can also be configured such that the rotating body 63 is rotated using the operation unit 70 and the like, similarly to the hemostatic device 10 according to the first embodiment.

  As described above, the hemostatic device according to the present invention has been described through a plurality of embodiments and modified examples. Is possible.

  For example, each part which comprises a hemostatic device can be substituted with the thing of the arbitrary structures which can exhibit the same function. Moreover, arbitrary components may be added.

  Moreover, the adjustment mechanism demonstrated in each embodiment should just have a structure which can control a motion of a spring member, and is not limited to what has the mechanical control structure demonstrated by illustration. For example, the adjustment mechanism may control the operation of the spring member by an electrical control method.

  Further, the control mechanism is configured so that the pressing force applied to the site (puncture site) to be stopped by the pressing portion can be reduced with time using the power generated by the spring member provided in the mainspring mechanism. As long as it is, the specific configuration is not limited. For example, the arrangement of the mainspring mechanism, the presence or absence of the gear group, the specific arrangement, the structure, and the like can be changed as appropriate.

  Further, the present invention can be applied not only to a hemostatic device used by attaching to a wrist, but also to a hemostatic device used by attaching to a leg or the like.

10 hemostatic devices,
20 belts,
22 support plate,
30 hook-and-loop fastener (fixing means),
40 pressing part,
40a pressing surface,
47 racks,
47a tooth part of rack part,
50 control mechanism,
60 Wind-up mechanism,
61 Spring member,
62 support shaft,
63 Rotating body,
70 operation unit,
80 gear group,
81 first transmission gear,
82 second transmission gear,
83 third transmission gear,
84 Fourth transmission gear,
87 Pinion part,
87a tooth part of the pinion part,
90 adjustment mechanism,
110 lock mechanism,
147 rack part,
148 hook part of the rack,
200 hemostatic device,
220 band,
221 The drawer part of the belt,
225 support plate,
240 pressing part,
240a pressing surface,
250 control mechanism,
260 Wind-up mechanism,
270 gripping part,
271 first roller,
272 second roller,
280 gear group,
290 adjustment mechanism,
P Puncture site (site to be hemostatic),
W wrist (limb),
R radial artery.

Claims (8)

A band to wrap around the limb to be hemostatic,
Fixing means for fixing the belt body in a state of being wound around the limb body;
A pressing part connected to the belt and pressing the site to be hemostatic;
A control mechanism for controlling the movement of the pressing portion relative to the site to be hemostatic so that the pressing force of the pressing portion against the site to be hemostatic can be controlled,
The said control mechanism is a hemostatic device which has a mainspring mechanism which transmits force to the said press part, and has a spiral spring member, and the operation part which provides force to the said spring member with rotation operation.   The hemostatic device according to claim 1, wherein the control mechanism includes an adjustment mechanism that controls movement of the spring member.   The hemostatic device according to claim 1, wherein the control mechanism includes a lock mechanism that suppresses transmission of force from the mainspring mechanism to the pressing portion.   The hemostatic device according to any one of claims 1 to 3, wherein the control mechanism includes a gear group that converts movement of the spring member into movement of the pressing portion with respect to the site to be hemostatic. A band to wrap around the limb to be hemostatic,
A pressing part connected to the belt and pressing the site to be hemostatic;
A control mechanism for controlling the length of the belt in a state where the belt is wrapped around the limb, and
The control mechanism includes a gripping part that grips the belt, and a spring mechanism that is connected to the gripping part and includes a spiral spring member.
The hemostatic device, wherein the gripping portion is configured to be able to change a gripping position for gripping the belt body in conjunction with the movement of the spring member.   The hemostatic device according to claim 5, wherein the control mechanism includes an adjustment mechanism that controls movement of the spring member.   The hemostatic device according to claim 5 or 6, wherein the control mechanism includes a lock mechanism that suppresses transmission of force from the mainspring mechanism to the grip portion.   The hemostatic device according to any one of claims 5 to 7, wherein the control mechanism includes a gear group that converts the movement of the spring member into a movement of the gripping part to send out the band.