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KR-102961999-B1 - Chest compression device with adjustable stroke

KR102961999B1KR 102961999 B1KR102961999 B1KR 102961999B1KR-102961999-B1

Abstract

The present invention relates to a stroke-adjustable chest compression device used for cardiopulmonary resuscitation, which enables cardiopulmonary resuscitation by controlling the compression speed while performing compression at a certain time interval. The device comprises: a housing (100) having an internal mounting space (101); a servo motor (200) disposed on one side of the outside of the housing (100) and having a drive shaft (210) provided in the center of one side to generate power and transmit power; a first crank plate (300a) disposed in the mounting space (101) of the housing (100) and connected to the drive shaft (210) of the servo motor (200) to generate rotational force; a second crank plate (300b) formed symmetrically in the same shape as the first crank plate (300a) and disposed in the mounting space (101) spaced apart from the side of the first crank plate (300a); and the first crank plate (300a) and The device is characterized by including: a connecting rod (400) positioned in a mounting space (101) such that the upper portion is located between the second crank plate (300b) and the first and second crank plates (300a) (300b), which are respectively positioned on both sides of the upper portion, are connected to convert the rotational force received by the first crank plate (300a) into translational motion; a link portion (500) positioned in the mounting space such that it is rotatably supported at the lower portion of the connecting rod (400) to perform link motion; a moving shaft (600) connected to the lower portion of the link portion (500) and performing up-and-down reciprocating motion while a portion of the lower portion protrudes to the lower portion of the housing (100); and a compression member (700) connected to the lower portion of the moving shaft (600) exposed to the lower outside of the housing (100). This invention is the result of research conducted through the '2024 Medical Device Component Module Localization Technology Development Support Project,' which is supported by Changwon Special City through the Ministry of Trade, Industry and Energy's AI Big Data-based Medical Bio Advanced Device Research and Manufacturing Center Establishment Project.

Inventors

  • 주성주
  • 엄정우
  • 장정훈
  • 이주현
  • 최성률
  • 강병욱

Assignees

  • (주)아이비에스티

Dates

Publication Date
20260508
Application Date
20250909

Claims (9)

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  7. A housing (100) having an internal mounting space (101), a servo motor (200) having a drive shaft (210) that generates power and transmits power to the center of one side and is disposed on one side of the outside of the housing (100), a first crank plate (300a) that is disposed in the mounting space (101) of the housing (100) and is connected to the drive shaft (210) of the servo motor (200) to generate rotational force, a second crank plate (300b) that is formed symmetrically in the same shape as the first crank plate (300a) and is disposed in the mounting space (101) spaced apart from the side of the first crank plate (300a), and an upper end is positioned between the first crank plate (300a) and the second crank plate (300b), and the first crank plate (300a) and the second crank plate (300b) are connected to each other, correspondingly positioned on both sides of the upper end. A connecting rod (400) disposed in a mounting space (101) to convert rotational force received by a first crank plate (300a) into translational motion; a link part (500) disposed in a mounting space to perform link motion while being rotatably supported at the lower end of the connecting rod (400); a moving shaft (600) connected to the lower end of the link part (500) to perform up-and-down reciprocating motion while a portion of its lower end protrudes toward the lower end of the housing (100); a compression member (700) connected to the lower end of the moving shaft (600) exposed to the lower outside of the housing (100); and an LM guide (800) disposed in a shaft insertion hole (104) formed in the lower part of the housing (100) to allow the moving shaft (600) to pass through while communicating with the mounting space (101), and having a guide hole (801) formed corresponding to the diameter of the shaft insertion hole (104) while supporting the passage of the shaft insertion hole (104). In a chest compression device capable of stroke adjustment, The above connecting rod (400) is formed with a hemispherical third ring portion (410) having a circumferential surface at the top and a third connecting hole (411) formed in the center, a hemispherical fourth ring portion (420) having a diameter smaller than that of the third ring portion (410) having a circumferential surface at the bottom and a fourth connecting hole (421) formed in the center, and a second connecting portion (430) formed with a predetermined straight length having the same width, with one end connected to the center of the bottom of the third ring portion (410) and the other end connected to the top of the fourth ring portion (420). The above link portion (500) has a connection port (501) formed in the upper center so that the fourth ring portion (420) of the connecting rod (400) is connected to perform link movement, and a pair of link plates (510) are formed symmetrically on each side of the connection port (501) and have a first binding hole (511) formed in the center, and a fixing hole (502) is formed in the lower center of the link portion (500) so that the upper end of the moving shaft (600) is bound and fixed, which is recessed upwardly inward. A first movable hinge shaft (350) is provided, wherein a third ring portion (410) of a connecting rod (400) is positioned between the second ring portion (320a) of the first crank plate (300a) and the second ring portion (320b) of the second crank plate (300b), and the first connecting hole (321a) of the second ring portion (320a) of the first crank plate (300a), the first connecting hole (321b) of the second ring portion (320b) of the second crank plate (300b), and the third connecting hole (411) of the third ring portion (410) of the connecting rod (400) are connected to provide rotational support. A second movable hinge shaft (450) is provided, wherein the fourth ring portion (420) of the connecting rod (400) is positioned at the connection port (501) of the link portion (500) to connect the first binding hole (511) of both link plates (510) and the fourth connecting hole (421) of the fourth ring portion (420) of the connecting rod (400) to provide rotational support. The second movable hinge shaft (450), which is connected by a hinge structure to the fourth ring portion (420) of the connecting rod (400) located at the connection port (501) of the link portion (500) and both link plates (510), has an extension shaft portion (460) formed by extending the ends of the second movable hinge shaft (450) further outward from each link plate (510) by a predetermined horizontal length. Guide grooves (105) are formed on the sides of the mounting space (101) corresponding to the ends of the extension shaft (460) so as to be in communication with the mounting space (101) for a predetermined vertical length. Both ends of the above extension shaft (460) are positioned in the guide groove (105) and are formed with a vertical length of the guide groove (105) corresponding to the vertical movement distance of the movable shaft (600). A guide member (480) is provided, which is mounted in the guide groove (105) and forms a guide space (481) inside to accommodate a roller part (470), and has a support member (482) formed vertically through the center of the inner surface to communicate with the guide space (481). The above guide member (480) is formed in the shape of a vertical bar with a square cross section having a vertical length corresponding to the vertical length of the guide groove (105) and a guide space (481) formed inside, and a support member (482) that penetrates vertically through the center of the inner side is formed to communicate with the guide space (481). As the roller part (470) is seated in the internal guide space (481) of the guide member (480), one side of the extension shaft part (460) of the second movable hinge shaft (450) is positioned on the support member (482), and As the connecting rod (400) rotates, the second movable hinge shaft (450) connected to the fourth ring portion (420) of the connecting rod (400) and the link plate (510) of the link portion (500) rotates, and simultaneously the link portion (500) rotates and the roller portion (470) accommodated in the guide space (481) of the guide member (480) rotates, and the second movable hinge shaft (450) moves vertically. A chest compression device capable of stroke adjustment, characterized in that a bending tab (484) is formed at a right angle to the inner guide space (481) on each of the front end piece (483) and the rear end piece (483) of a support member (482) formed in the center of the inner surface of the guide member (480), and a friction reduction part (490) is provided such that a contact piece (491) is formed vertically in the center of the other side so as to be fitted into the bending tab (484), and a protruding surface part (492) with an end surface formed horizontally on one side is formed vertically in a plurality of equal intervals.
  8. In Paragraph 7, The first crank plate (300a) is formed with a first ring portion (310a) having a hemispherical surface at the top, a second ring portion (320a) having a hemispherical surface at the bottom and a diameter smaller than that of the first ring portion (310a), and a first connecting portion (330a) having one end connected to the bottom of the first ring portion (310a) and the other end connected to the top of the second ring portion (320a), with the width gradually decreasing as it goes downward. A first connecting shaft (311a) is formed horizontally protruding from the outer surface of the first ring portion (310a), and the center of the coupling hole (312) recessed into the interior of the first connecting shaft (311a) is positioned at the same location as the center of the first ring portion (310a), and a first connecting hole (321a) is formed at the center of the inner surface of the second ring portion (320a). A chest compression device capable of stroke adjustment, characterized in that a first connecting shaft (311b) is formed in a symmetrical shape and formed identically to the first connecting shaft (311a) of the first crank plate (300a) at the center of the outer surface of the second crank plate (300b), and a first connecting hole (321b) is formed at the center of the inner surface of the second ring portion (320b) of the second crank plate (300b).
  9. In Paragraph 7, A pressure dispersion member is further included between the above-mentioned moving shaft (600) and the compression member (700), and The pressure dispersion part is composed of a disc-shaped upper plate having a first through hole formed therein so that the lower end of the movable shaft (600) is connected and fixed at the center of the upper surface, a connecting part having a diameter smaller than the diameter of the upper plate and connected to the center of the lower surface of the upper plate, and a disc-shaped lower plate having a second through hole formed therein so that it is connected to the center of the upper surface of the connecting part and the upper part of the pressure member (700) is connected to the lower surface, and is proportional to the diameter of the upper plate and is connected to the first through hole of the upper plate through the connecting part at the center of the lower surface. A chest compression device capable of stroke adjustment, characterized by having a fixing bolt that is screw-coupled to a fastening hole formed in the center of the lower surface of a moving shaft (600) received in the first hole of the upper plate, passing through the second hole of the pressure dispersion part from the center of the lower surface of the compression member (700) through the third hole penetrating from the center of the lower surface to the center of the upper surface.

Description

Chest compression device with adjustable stroke The present invention relates to a chest compression device capable of stroke adjustment, and more specifically, to a chest compression device capable of stroke adjustment used in cardiopulmonary resuscitation that enables cardiopulmonary resuscitation by adjusting the compression speed while performing compressions with a uniform time interval. Generally, cardiopulmonary resuscitation involves supplying oxygenated blood flow to the entire body to replace the function of the heart and lungs in a patient whose heart has stopped beating, and includes chest compressions and artificial respiration. Cardiopulmonary Resuscitation (CPR) refers to an emergency procedure that prevents brain death or damage by supplying oxygen to the brain through blood circulation by artificially applying pressure to the heart when the activity of the heart or lungs suddenly stops due to disease or an accident. If CPR is performed within 4 minutes of cardiac arrest, the survival rate is over 50%, so prompt CPR is required when a patient with cardiac arrest is discovered. Furthermore, to induce spontaneous blood circulation during CPR, arterial blood pressure must be maintained at 20 mmHg or higher. However, conventional methods that repeatedly compress only the sternum induce only about 10–20% of normal cardiac blood flow, which is insufficient for spontaneous blood circulation; consequently, various CPR devices have been proposed to increase blood flow. However, upon examining the aforementioned prior art, there are issues such as complex configurations that cause inconvenience to users, high production costs that make it difficult to deploy devices in various locations, and the difficulty in installing or wearing them on a patient's chest, as well as the difficulty in determining the degree of chest compression during emergency rescue. FIG. 1 is a perspective view (a) and a cross-sectional view (b) of a stroke-adjustable chest compression device according to an embodiment of the present invention. FIG. 2 is a perspective view (a) and a front view (b) of a chest compression device excluding the housing in a stroke-adjustable chest compression device according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of a chest compression device excluding the housing in a stroke-adjustable chest compression device according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of the overall structure excluding the servo motor and the compression member in a stroke-adjustable chest compression device according to an embodiment of the present invention. FIG. 5 is a perspective view (a) of a first crank plate and a perspective view (b) of a second crank plate in a stroke-adjustable chest compression device according to an embodiment of the present invention. FIG. 6 is a perspective view (a) of a connecting rod, a perspective view (b) of a link portion, and a cross-sectional view (c) of a link portion in a stroke-adjustable chest compression device according to an embodiment of the present invention. FIG. 7 is an internal cross-sectional perspective view of a housing in a stroke-adjustable chest compression device according to an embodiment of the present invention. FIG. 8 is a cross-sectional view showing a coupling structure between a roller part connected to an extension shaft part, in a chest compression device with stroke control according to an embodiment of the present invention, wherein a guide member and a contact reduction part are mounted in a guide groove. Embodiments that enable a person skilled in the art to easily practice the present invention are described in detail below with reference to the attached drawings. However, in describing the operating principles of preferred embodiments of the present invention in detail, if it is determined that a specific description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description is omitted. In addition, the same reference numerals are used for parts having similar functions and operations throughout the drawings. Throughout the specification, when a part is described as being connected to another part, this includes not only cases where they are directly connected, but also cases where they are indirectly connected with other elements in between. Furthermore, unless specifically stated otherwise, the inclusion of a certain component does not exclude other components but implies that additional components may be included. In addition, any limitation or addition to an embodiment in this specification may apply not only to a specific embodiment but also to other embodiments. In addition, throughout the description and claims of the present invention, anything indicated in the singular includes cases where it is plural unless otherwise noted. As shown in FIGS. 1 to 3, one embodiment of the present invention co