JP2006218109A - Sticking material for hemostasis - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sticking material for hemostasis which suppresses bleeding by strongly pressing a pad member to a puncture hole by an injection needle or the like after performing blood sampling, drip infusion and blood transfusion or the like. <P>SOLUTION: To the center part of an adhesive material layer 2 layered on the entire one surface of a support sheet 1, the outer surface of a pressurizing member 3 whose outer surface is curved in a circular dome shape is integrally adhered. Also, a pad member 4 is mounted on the recessed part 3b' on the inner surface side of the pressurizing member 3. At the time of use, after releasing release paper 5 stuck to the adhesive material layer 2, the tip end face of the pad member 4 is applied to the puncture hole and the support sheet 1 is stuck to the skin surface around it. Then, the pad member 4 is pushed and advanced toward the skin surface by pressurizing the pressurizing member 3 from the outer surface side of the support sheet 1 and elastically deforming it so as to turn the recessed part 3b' to a projected part, the tip end face of the pad member 4 is strongly pressed to the puncture hole, and sure hemostasis is performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hemostatic patch for suppressing bleeding from a puncture hole caused by an injection needle or the like after blood collection, infusion, blood transfusion, artificial dialysis, or the like.

Blood collection and blood transfusion for physical examination and treatment is performed by puncturing an injection needle, catheter, medical tube, etc. into the blood vessel from the surface of the skin. Since bleeding occurs from the hole, hemostasis treatment is performed using a patch for hemostasis. As such a hemostatic patch, conventionally, as described in Patent Document 1, for example, an adhesive layer is provided on the entire surface of one surface of a stretchable sheet, and a pressing plate is provided on the central portion of the adhesive layer. A structure in which a pad member is mounted via a pad is known, and in use, after the pad member is applied to the puncture hole, the adhesive layer is placed around the puncture hole while the sheet is pulled and stretched. It is adhered to the skin surface, and the hemostasis is performed by strongly pressing the pad member against the puncture hole through the pressing plate by the contraction force of the sheet. In addition, a hemostatic patch is also known in which the surface of the pad member pressed against the puncture hole is formed in a convex shape in order to increase the pressing force of the pad member against the puncture hole (see Patent Document 2).
JP-A-7-241313 JP 2001-17461 A

  However, in any of the above-mentioned hemostatic patches, the pad member is pressed against the puncture hole by using the contraction force of the stretchable sheet, so when the sheet is adhered to the skin surface The pressing force against the puncture hole greatly fluctuates depending on the amount of extension of the sheet, and the extension amount cannot be changed after the sheet is stuck, making it difficult to achieve a reliable hemostatic action. May occur.

  In addition, since the extension direction of the sheet is substantially parallel to the skin surface, the contraction force of the sheet after being attached to the skin surface is effectively applied in a direction perpendicular to the skin surface, that is, a direction toward the puncture hole. In addition to requiring an extremely large stretch force, the skin is attracted and moved to the sheet side by the contraction force of the sheet after sticking, and the pressing force of the pad member against the puncture hole is reduced. In addition, there is a problem in that the work of sticking the skin with the pad member pressed against the puncture hole while extending the sheet greatly is troublesome and cannot be performed accurately.

  The present invention has been made in view of such problems, and the object of the present invention is to simply remove the pad member after sticking regardless of whether the support sheet having the pad member has an expansion / contraction function. Another object of the present invention is to provide a hemostatic patch that can be reliably pressed against a puncture hole with a strong pressing force.

  In order to achieve the above object, the hemostatic patch according to the present invention includes a support sheet having a pressure-sensitive adhesive layer provided on one side and the pressure-sensitive adhesive layer at the center of one side of the support sheet. A release member that covers the pressing member that is releasably attached to the pressure-sensitive adhesive layer of the support sheet and that is provided with the pad member. The pressing member is formed in a circular dome shape curved in a convex arc shape toward the support sheet side from the outer peripheral edge to the center, and the center portion of the support sheet to which the pressing member is bonded Is formed in a convex arcuate protrusion, while the central portion of the pressing member facing the release paper fixing the pad member is formed in a concave arcuate recess, and Press by pressing the protrusion Material recesses is applied to the puncture of such needle mounted starts selling the pad member and the outer peripheral edge portion as a supporting point is configured to elastically deform in a convex arc shape.

  In the hemostatic patch configured as described above, in the invention according to claim 2, the pressing member is made of a synthetic resin material or a thin metal plate, and the outer peripheral edge portion protrudes from the adhesive layer of the support sheet toward the release paper side. In addition, the inner peripheral wall surface of the protrusion peripheral portion is connected to the circular dome-shaped outer peripheral end of the pressing member via a flat ring-shaped peripheral portion. It is characterized by that.

  According to the hemostatic patch of the present invention, the pressing member adhered to the central portion of the pressure-sensitive adhesive layer of the support sheet before use is dented in a concave arc shape at the central portion facing the release paper side. Since it is formed in a circular dome shape, the pad member can be placed in this recess in a stable storage state, so that not only the handleability is good, but also a large number of hemostatic patches Can be stored compactly in a stacked state.

  In use, after peeling the release paper and applying the pad member to the puncture hole after removing the injection needle, etc., and sticking the adhesive layer of the support sheet to the skin surface, the center of the support sheet When the protruding portion is pressed toward the skin surface, the pressing member formed in the circular dome shape is elastically deformed so as to reverse the circular dome shape, that is, the inner surface side on which the pad member is mounted protrudes from the concave arc-shaped concave portion. A support sheet around the pad member that is elastically deformed and projected into an arc shape, and the outer peripheral edge of the pressing member moves away from the skin surface and adheres to the skin surface with the tip surface of the pad member crimped to the puncture hole as a fulcrum A large tensile force can be generated in the portion, and a reaction force due to the tensile force can be applied to the pressing member to press the pad member against the puncture hole with a large pressing force. It can be performed accurately and quickly reliable hemostasis without or displaced.

  In this way, after the pad member is applied to the puncture hole and the support sheet is attached to the skin surface, the pad member is protruded toward the puncture hole, deformed, and held in this state to stop the puncture hole. Therefore, it is not necessary to stick the support sheet to the skin surface while extending the support sheet. Therefore, the support sheet is easily attached to the skin surface while maintaining the state where the pad member is accurately applied to the puncture hole. In addition, the hemostasis operation can be performed quickly and a strong pressing action can be exerted by the projecting deformation of the pressing member to enable reliable hemostasis.

  In addition, the elastically deformable circular dome-shaped pressing member can be easily manufactured from a synthetic resin material or a metal thin plate with high productivity as described in claim 2. The outer peripheral edge is formed on the protrusion peripheral edge having a mountain-shaped cross section protruding from the pressure-sensitive adhesive layer of the support sheet toward the release paper side, and the inner wall surface of the protrusion peripheral edge is a flat ring-shaped peripheral edge. Since the pressure member is connected to the outer peripheral end of the circular dome shape, the pad member is applied to the puncture hole and the support sheet is adhered to the skin surface during use. When the central projecting portion of the support sheet to which the outer surface curved in a convex arc shape is bonded is pressed toward the skin surface, the circular dome-shaped central portion of the pressing member is bonded to the adhesive layer via the flat ring-shaped peripheral portion. Cross section mountain not bonded to While pressing the inner wall surface portion of the shape peripheral edge of the ridge toward the outer wall surface in a direction of expanding and deforming toward the outer wall surface portion, the concave portion provided with the pad member is easily inverted and deformed so that it becomes a convex portion, and the pressing member is inserted into the puncture hole Can be firmly bonded to the surface.

  Furthermore, when the center part of the circular dome shape of the pressing member is reversed and deformed so that the concave part in which the pad member is mounted becomes a convex part, the flat ring-shaped peripheral part has a mountain-shaped cross-sectional peripheral part. From the inclined end of the inner wall surface portion of the portion toward the outer peripheral end of the central portion of the circular dome shape, and from the pad member side that is strongly pressed against the puncture hole by the circular dome shape protruding deformation of the pressing member In spite of a large reaction force acting in the direction of returning the pressing member to the original circular dome shape, the reaction force is cross-sectioned from the outer peripheral end of the circular dome shape through the inclined ring-shaped peripheral portion. Acts in a direction to lift the support sheet from the skin surface against the inclined end of the inner wall surface portion of the peripheral edge of the chevron-shaped ridge, and accordingly, the pressing member is received in a stretched manner by the support sheet. Can be prevented from elastic deformation, the pad member may have been pressed with a strong pressing force to the puncture hole.

  Next, specific embodiments of the present invention will be described with reference to the drawings. In FIGS. 1 to 3, the adhesive sheet A for hemostasis includes a support sheet 1 formed by laminating an adhesive layer 2 over the entire surface, The pressing member 3 bonded to the central portion of one side of the support sheet 1 via the pressure-sensitive adhesive layer 2, the pad member 4 bonded to the pressing member 3, and the pressure-sensitive adhesive layer on the outer peripheral portion of the support sheet 1 2 and a release paper 5 which is detachably attached to the pad member 4 so as to cover the entire surface of the pad member 4.

  The support sheet 1 is made of a thin cloth having flexibility, a synthetic resin film, or a nonwoven fabric such as paper, and is formed in a rectangular shape. The support sheet 1 may or may not have elasticity, but it is desirable that the supporting sheet 1 has a relatively high tensile strength and appropriate elasticity. As the pressure-sensitive adhesive layer 2 layered on the support sheet 1, a known adhesive such as acrylic or rubber is used.

  The pressing member 3 adhered to the pressure-sensitive adhesive layer 2 of the support sheet 1 is the most important constituent element of the present invention, and has an appropriate rigidity with a diameter of about 2 to 3 cm and can be elastically deformed. It consists of a circular synthetic resin thin plate or a metal thin plate, and the circular outer peripheral edge portion is formed on a protrusion peripheral edge portion 3a having a mountain-shaped cross section protruding in a direction away from the adhesive layer 2 (downward in FIG. 1). The central portion 3b is formed in a circular dome shape curved in a convex arc shape toward the adhesive layer 2 toward the center, that is, upward in FIG. 1, and further, the central portion of the circular dome shape is formed. An annular intermediate portion having a certain width between the outer peripheral end of 3b and the inner peripheral end of the inner inclined peripheral wall surface portion 3a1 of the protruding peripheral edge portion 3a is formed in the flat portion 3c.

  In the central portion 3b of the pressing member 3 bulged in a circular dome shape toward the pressure-sensitive adhesive layer 2 of the support sheet 1, the surface curved in a convex arc shape on the pressure-sensitive adhesive layer 2 side of the support sheet 1 is defined as the outer surface. Since the adhesive layer 2 at the center of the support sheet 1 is adhered to the outer surface, the center of the support sheet 1 protrudes in a convex arc shape on the surface opposite to the adhesive layer 2. The inner surface of the central portion 3b of the pressing member 3 that is formed on 1a and exposed to the pressure-sensitive adhesive layer 2 side of the support sheet 1 is formed as a concave portion 3b ′ that is curved in a bowl shape (concave arc shape). ing. The central portion 3b of the pressing member 3 has a shape in which the inside and outside are reversed by pressing the protruding portion 1a of the support sheet 1 toward the skin surface side, with the ridge peripheral portion 3a having a cross-sectional mountain shape as a fulcrum, That is, the outer surface curved in a convex arc shape becomes a concave arc-shaped concave portion, and the concave arc-shaped concave portion 3b ′ is formed so as to be elastically deformable so as to protrude into the convex arc shape.

  The pad member 4 is disposed in the recess 3b ′ in the central portion 3b of the pressing member 3, and is integrally bonded to the inner surface of the recess 3b ′ by an adhesive. The pad member 4 is made of one kind of foamed synthetic resin, compressed cotton, nonwoven fabric, rubber or the like, or a laminate of two or more kinds. The shape may be a shape such as a rectangle or a polygon, and the height is higher than the depth of the concave portion 3b ′ of the pressing member 3, and the distal end surface of the protruding portion protruding from the concave portion 3b ′ is pressed against the puncture hole. It is formed so that it can be.

  The release paper 5 that is releasably attached to the pressure-sensitive adhesive layer 2 of the support sheet 1 includes double-sided release papers 5a and 5b that are attached to the pressure-sensitive adhesive layer 2 on both sides of the pressure member 3, and a pressure member. 3 is a central release paper 5c covering 3 and this central release paper 5c is releasably attached to the adhesive layer 2 exposed between the release papers 5a and 5b on both sides, and both ends thereof The portions are overlapped on the folded piece portions 5a ′ and 5b ′ at the opposite end portions of the both-side release papers 5a and 5b.

  In the use of the hemostatic patch thus constructed, the central release paper 5c of the support sheet 1 is first peeled off to expose the pad member 4 and the release paper 5a on both side release papers 5a and 5b is peeled off. The edge of the support sheet 1 is picked together with the release paper 5b, the tip surface of the pad member 4 is applied to the puncture hole after the injection needle is removed, and the center and one release paper 5a, 5c are exposed by peeling. The pressure-sensitive adhesive layer 2 is stuck on the skin surface, and then the other release paper 5b is peeled off and the portion of the pressure-sensitive adhesive layer 2 is stuck on the skin surface. At this time, the pad member 4 is pressed against the puncture hole with a constant pressing force while tensioning both side portions of the support sheet 1 in the length direction.

  In this way, as shown in FIG. 4, the support sheet 1 is stuck to the skin surface so that the pad member 4 is pressed against the puncture hole. In this state, the support member 1 has a proximal end surface of the pad member 4 fixed to the central recess 3b ', and the pressing member 3 has its outer surface curved in a dome shape and bonded to the outer surface portion. The central portion of the projection protrudes outward as a protruding arc-shaped protruding portion 1a.

  Next, when the protrusion 1a is pressed with the fingertip toward the puncture hole side, as shown in FIG. 5, the shape of the central portion 3b of the circular dome shape in the pressing member 3 is directed inward (skin surface side). The convex arc-shaped outer surface side is elastically bent and deformed so that the concave arc shape is formed on the concave arc-shaped outer surface side and the inner surface of the concave arc-shaped concave portion 3b ′ is formed on the convex arc shape. That is, when the outer surface side of the circular dome-shaped central portion 3b of the pressing member 3 is pressed toward the skin surface, the central portion 3b is shaped like a cross section via a ring-shaped flat portion 3c connected to the outer peripheral edge. While pressing the inner wall surface portion 3a1 of the protruding rim peripheral portion 3a in the direction of increasing the diameter toward the outer wall surface portion 3a2, the concave portion 3b ′ is easily inverted and deformed so as to become a convex portion.

Thus, when the circular dome-shaped central portion 3b of the pressing member 3 is inverted and deformed so that the concave portion 3b ′ to which the pad member 4 is attached becomes a convex portion, the outer peripheral edge portion of the pressing member 3 becomes the puncture hole. As a fulcrum, the tip surface of the pad member 4 applied to is moved in a direction away from the skin surface by a distance corresponding to the amount of internal and external deformation, and a large tensile force is applied to the support sheets 1 on both sides of the pad member 4. generate. However, since the support sheet 1 is attached to the skin surface, the tensile force acts in the direction in which the pad member 4 is pushed to the skin surface with the attachment portion of the support sheet 1 to the skin surface as a fulcrum. The pressing force of the pressing pad member 4 can be increased to strongly press against the puncture hole, and a reliable hemostatic action can be performed.

  Furthermore, if the circular dome-shaped central portion 3b of the pressing member 3 is inverted and deformed so that the concave portion 3b ′ to which the pad member 4 is attached becomes a convex portion as described above, it continues to the outer periphery of the central portion 3b. The flat portion 3c of the provided ring is inclined in the protruding direction of the central portion 3b from the inclined end of the inner wall surface portion 3a1 of the ridge peripheral portion 3a having a mountain-shaped cross section toward the outer peripheral end of the circular dome-shaped central portion 3b. It becomes a state. Therefore, the reaction force of the pressing force of the pad member 4 against the puncture hole acts in the direction of the original concave portion 3b ′ on the central portion 3b protruding in a convex arc shape toward the inside. The inclined end of the inner wall surface portion 3a1 of the ridge peripheral portion 3a having a mountain-shaped cross-section from the outer peripheral end of the central portion 3b projecting and deforming in an arc shape through the inclined ring-shaped flat portion 3c, that is, the support sheet 1 is It works in the direction of lifting from the skin surface and is received by the support sheet 1 in a stretched manner. Therefore, the pressing member 3 is not elastically deformed to the original shape, and the state where the pad member 4 is strongly pressed against the puncture hole is maintained.

The longitudinal cross-sectional view of the patch for hemostasis. The perspective view of the state which peeled the center release paper and faced the adhesive layer upward. FIG. The simplified longitudinal cross-sectional view of the state which stuck the adhesive material for hemostasis. The simplified longitudinal cross-sectional view of the state which pressed the pad member against the puncture hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support sheet 1a Protrusion part 2 Adhesive layer 3 Press member 3a Projection peripheral part 3b Circular dome-shaped center part 3b 'recessed part 3c Flat part 4 Pad member 5 Release paper

Claims (2)

  A support sheet having a pressure-sensitive adhesive layer provided on one side, a pressing member bonded to the center of one side of the support sheet via the pressure-sensitive adhesive layer, a pad member mounted on the pressing member, and the pressure-sensitive adhesive of the support sheet It consists of a release paper that covers the pressing member that is releasably attached to the agent layer and that is provided with the pad member, and is convex toward the support sheet as it goes from the outer peripheral edge to the center. It is formed in a circular dome shape curved in an arc shape, and the center portion of the support sheet to which the pressing member is bonded is formed as a convex arc-shaped protruding portion, while on the release paper side fixing the pad member A central portion of the pressing member that faces is formed in a concave arc-shaped recess, and the pressing member is pressed against a puncture hole such as an injection needle with its outer peripheral edge as a fulcrum by pressing the protruding portion of the support sheet. Install the pad member Hemostatic patch that depressions are characterized by being configured to elastically deform in a convex arc shape.   The pressing member is made of a synthetic resin material or a thin metal plate, and its outer peripheral edge is formed into a protrusion peripheral edge having a mountain-shaped cross section protruding from the adhesive layer of the support sheet toward the release paper side. The hemostatic patch according to claim 1, wherein the inner peripheral wall surface of the peripheral portion is connected to the circular dome-shaped outer peripheral end of the pressing member via a flat ring-shaped peripheral portion.

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