A mechanical stretching external counterpulsation device and system

Abstract

The present invention relates to the technical field of extracorporeal counterpulsation, and in particular to a mechanically stretched extracorporeal counterpulsation device and system, wherein the extracorporeal counterpulsation device comprises a support seat having a first side and a second side opposite to each other, wherein a strap is fixed at the first side, the strap extends toward the second side, and the strap body and the support seat between the first and second sides enclose a receiving area for inserting a patient's limb into the area; the strap located at the second side is connected to a driving mechanism, and the size of the receiving area is expanded or reduced under the drive of the driving mechanism; when the extracorporeal counterpulsation device provided by the present invention is used, the driving mechanism drives the strap to move according to the counterpulsation cycle, so that the area defined by the receiving area is expanded or reduced, and the patient's limb placed therein is squeezed or released to complete the extracorporeal counterpulsation action; based on the mechanically stretched extracorporeal counterpulsation device provided by the present invention, it has the advantages of small size, light weight, high sensitivity and easy use.

Description

Technical Field

[0001] The present invention relates to the technical field of external counterpulsation, and in particular to a mechanical stretching type external counterpulsation device and system. Background Art

[0002] External counterpulsation (ECP) is a technology used to treat angina pectoris and congestive heart failure (CHF). By placing a cuff around the lower limbs of the body, the inflation / expansion / deflation action of the cuff airbag is synchronized with the user's heart diastole / systole process, which reduces the systolic blood pressure in the aorta and increases the diastolic blood pressure in a non-invasive manner, which can assist the heart to do work, improve blood circulation, and increase cardiac output. However, the airbag cuff requires a larger air tank during the inflation and pressurization process, resulting in a large space occupied by the entire device. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a mechanical stretching type external counterpulsation device which is compact in structure and easy to use.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A mechanical stretching type external counterpulsation device comprises a support seat having a first side and a second side opposite to each other, a strap is fixed to the first side, the strap extends to the second side, and the strap body and the support seat between the first side and the second side form a receiving area for inserting a patient's limb into the area;

[0006] The binding belt located at the second side edge is connected to the driving mechanism, and is driven by the driving mechanism to expand or reduce the size of the accommodating area.

[0007] In a further technical solution, a support member extending along the width direction of the strap located at the second side is provided, and the driving mechanism is connected to the support member to pull the support member to translate and drive the strap to expand or shrink the accommodating area.

[0008] Preferably, a guide rod extending along the length direction of the support seat is provided at the second side edge thereof, and the belt body of the binding belt is passed around the rod body of the guide rod and forms a guiding cooperation therewith;

[0009] Preferably, both ends of the guide rod are rotatably arranged on the support seat via bearings.

[0010] In a further technical solution, sliding blocks are fixed to both ends of the support member, and the sliding blocks form a sliding guide fit with a linear guide rail arranged between the first side edge and the second side edge.

[0011] In a further technical solution, grooves are provided at the upper side, the lower side and the end face at both ends of the support member, and balls are provided in the grooves. The balls form a sliding guide fit with a slide groove provided between the first side and the second side.

[0012] In a further technical solution, the driving mechanism includes:

[0013] a driving source, wherein a power output end of the driving source is connected to the supporting member, and is used to pull the supporting member and drive the strap to move so as to reduce the size of the accommodating area;

[0014] A return spring, one end of which is connected to the support member, and the elastic force of which is used to drive the belt body of the strap to move toward the second side.

[0015] In a further technical solution, a traction member is provided between the power output end of the driving source and the supporting member, one end of the traction member is fixed to the supporting member, and the other end is fixedly connected to the power output end of the driving source.

[0016] Preferably, the portion of the traction member located outside the support seat is also sleeved with a sleeve, and one end of the sleeve adjacent to the support seat is fixed to the support seat.

[0017] In a further technical solution, the support seat has a accommodating space, and an opening extending along its length direction is provided at the second side to connect the accommodating space with the external space. The strap located at the second side extends into the accommodating space through the opening and is connected to the driving mechanism.

[0018] In a further technical solution, the strap is a two-section structure, wherein a first end of the first strap section is fixed at the first side edge, and a second end extends in a direction close to the second side edge;

[0019] The belt body of the second strap section is close to the second side edge, the first end of the belt body is connected to the driving mechanism, and the second end of the belt body is detachably connected to the second end of the first strap section;

[0020] Preferably, the second end of the second strap section is connected to the second end of the first strap section via Velcro.

[0021] Preferably, the support seat is provided with a support portion with an upper surface in a concave arc shape, the lower surface of the support portion is adjacent to and spaced from the upper surface of the support seat, and the support seat adjacent to the second side is provided with a first clamp and a second clamp extending along its length direction and spaced in parallel, the first clamp and the second clamp are adjacent to and spaced from the end of the support portion, and the hanging end of the binding strap fixed at the first side extends inwardly along the space between the support portion and the support seat and is wound and fixed between the first clamp and the second clamp;

[0022] Preferably, a protruding structure extending along the length direction of the supporting seat adjacent to the first side edge is provided, and a limiting groove cooperating with the protruding structure is provided on the supporting portion.

[0023] The present invention also provides an EVCP system based on the mechanical stretching EVCP device, comprising a signal acquisition unit, a control unit and an execution unit;

[0024] The signal acquisition unit is used to collect human electrocardiogram signals and transmit them to the control unit, and includes a lead wire electrically connected to the control unit;

[0025] The control unit processes the received human electrocardiogram signal, calculates the counterpulsation cycle and generates a counterpulsation pulse signal, sets a time delay associated with the counterpulsation pulse signal, and transmits the counterpulsation pulse signal to the execution unit;

[0026] The servo motor in the execution unit receives the counterpulsation pulse signal transmitted by the control unit, and controls the external counterpulsation device to perform the counterpulsation action;

[0027] The execution unit includes the above-mentioned mechanical stretching external counterpulsation device.

[0028] In a further technical solution, the EVCP system further includes a display unit; the control unit stores real-time data and transmits the data to the display unit, and the display unit displays an electrocardiogram.

[0029] Compared with the prior art, the external counterpulsation device provided by the present invention, when in use, the driving mechanism drives the strap to move according to the counterpulsation cycle, so that the area defined by the accommodating area is expanded or reduced, and the patient's limb placed therein is squeezed or released to complete the external counterpulsation action. The mechanical stretching external counterpulsation device provided by the present invention has the advantages of small size, light weight, high sensitivity and easy use.

[0030] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It shows a schematic structural diagram of a mechanical stretching type external counterpulsation device provided according to a specific embodiment of the present invention;

[0032] Figure 2 Shown as Figure 1 A cross-sectional view of a mechanical stretch external counterpulsation device;

[0033] Figure 3 It is a schematic diagram of a guide and limit mechanism using a slider and a linear guide rail in cooperation according to a specific embodiment of the present invention;

[0034] Figure 4 A cross-sectional view of a guide and limit mechanism using a slider and a linear guide rail is shown;

[0035] Figure 5 It is a schematic diagram showing a guide and limiting mechanism using a ball and a slide groove in cooperation according to a specific embodiment of the present invention;

[0036] Figure 6 A cross-sectional view of a guide limit mechanism using a ball and a slide groove;

[0037] Figure 7 It is a schematic diagram of the support member when the ball bearing and the slide groove are matched in the present invention;

[0038] Figure 8 A schematic diagram of an external counterpulsation system provided according to a specific embodiment of the present invention is shown;

[0039] Explanation of the numbers in the figure: 1. accommodating area; 10. supporting seat; 10a. first side; 10b. second side; 11. guide rod; 12. linear guide; 13. slide groove; 14. accommodating space; 15. opening; 16. supporting part; 161. limiting groove; 17. first clamping member; 18. second clamping member; 19. raised structure; 20. strap; 21. first section of strap; 22. second section of strap; 30. supporting member; 31. slider; 32. groove; 33. ball; 40. return spring; 50. traction member; 51. sleeve. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific drawings.

[0041] It should be noted that, in the present invention, when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] As mentioned above, combined with Figure 1 , 2As shown, the present invention provides a mechanical stretching extracorporeal counterpulsation device, which includes a support seat 10, wherein the support seat 10 has a first side 10a and a second side 10b opposite to each other, wherein a strap 20 is fixed at the first side 10a, wherein the strap 20 extends toward the second side 10b, and the strap body of the strap 20 and the support seat 10 between the first side 10a and the second side 10b form a receiving area 1 for inserting the patient's limb therein; the strap 20 at the second side 10b is connected to a driving mechanism, and the size of the receiving area 1 is expanded or reduced under the drive of the driving mechanism.

[0044] The external counterpulsation device provided by the present invention, when used, the driving mechanism drives the strap 20 to move according to the counterpulsation cycle, so that the area defined by the accommodating area 1 is expanded or reduced, and the patient's limb placed therein is squeezed or released to complete the external counterpulsation action. The mechanical stretching external counterpulsation device provided by the present invention has the advantages of small size, high sensitivity and easy use.

[0045] According to the EVCP device provided by the present invention, one end of the bandage 20 is fixed, and the other end is pulled by the driving mechanism, and then cooperates with the support seat 10 to achieve periodic compression and release of the patient's limbs to meet the requirements of EVCP. The bandage 20 has a certain flexibility, so when the driving mechanism pulls it to move, it is easy to stack in the width direction, thereby affecting the EVCP action; in order to avoid the above phenomenon, in a specific embodiment of the present invention, a support member 30 extending along the width direction is provided on the bandage 20 located at the second side 10b, and the driving mechanism is connected to the support member 30, which is used to pull the support member 30 to translate and drive the bandage 20 to expand or shrink the accommodating area 1. Through the setting of the support member 30, the problem of stacking in the width direction of the bandage 20 when reciprocating is effectively prevented. At the same time, the driving mechanism pulls the bandage 20 through the support member 30, ensuring that the tension is evenly applied in the width direction of the bandage 20, thereby improving the stability of the reciprocating movement of the bandage 20.

[0046] Furthermore, in the present invention, in order to avoid interference between the strap 20 and the second side 10b of the support seat 10, a guide rod 11 extending along the length direction is provided at the second side 10b of the support seat 10, and the strap body of the strap 20 passes around the rod body of the guide rod 11 and forms a guiding match with it; more preferably, in the present invention, both ends of the guide rod 11 are rotatably arranged on the support seat 10 via bearings. That is to say, when the driving mechanism pulls the strap 20 to move, the strap 20 abuts against the guide rod 11 and drives it to roll, thus effectively avoiding the problem of the strap 20 being worn at the second side 10b and reducing its service life.

[0047] In a specific embodiment of the present invention, in order to ensure the stability of the support member 30 during the reciprocating movement, a guide limit mechanism is provided between the end of the support member 30 and the supporting portion 10. Specifically, Figure 3 , 4 As shown, sliders 31 are fixed to both ends of the support member 30 , and the sliders 31 form a sliding guide fit with the linear guide rail 12 arranged between the first side 10 a and the second side 10 b .

[0048] In another specific embodiment of the present invention, Figure 5 , 6 As shown in Figures 7 and 8, grooves 32 are respectively provided at the upper side, the lower side and the end face at both ends of the support member 30, and balls 33 are provided in the grooves 32. The balls 33 and the slide grooves 13 provided between the first side edge 10a and the second side edge 10b form a sliding guide fit.

[0049] In the present invention, the function of the driving mechanism is to pull the bandage 20 to move, so that the size of the accommodation area 1 formed by the bandage 20 and the support seat 10 changes periodically, so as to achieve the squeezing and releasing of the patient's limbs, and then achieve the counterpulsation effect. As a specific implementation of the driving mechanism, the driving mechanism includes a driving source and a return spring 40. The power output end of the driving source is connected to the support member 30, which is used to pull the support member 30 and drive the bandage 20 to move to reduce the size of the accommodation area 1; one end of the return spring 40 is connected to the support member 30, and its elastic force is used to drive the belt body of the bandage 20 to move toward the second side 10b. That is, the return spring 40 can push the support member 30 and drive the bandage 20 to expand the size of the accommodation area 1.

[0050] Furthermore, in the present invention, a traction member 50 is provided between the power output end of the driving source and the support member 30, one end of the traction member 50 is fixed on the support member 30, and the other end is fixedly connected to the power output end of the driving source. In a specific embodiment of the present invention, the driving source is a servo motor, and the traction member 50 is wound around the output shaft of the servo motor. When the output shaft of the servo motor rotates forward, the traction member 50 is wound and drives the support member 30 to move toward the first side 10a of the support seat 10, so as to reduce the accommodating area 1 and squeeze the patient's limbs. When the output shaft of the servo motor rotates reversely, the traction member 50 is released, and the support member 30 is pushed to recover under the action of the return spring 40, so as to expand the accommodating area 1 and release the patient's limbs. The function of the traction member 50 is to transmit power, and a steel wire rope can be selected specifically.

[0051] Furthermore, in the present invention, in order to protect the steel wire rope, the portion of the traction member 50 outside the support seat 10 is also sleeved with a sleeve 51 , and one end of the sleeve 51 adjacent to the support seat 10 is fixed to the support seat 10 .

[0052] According to the extracorporeal counterpulsation device provided by the invention, in the present invention, the support member 30 and its guide and limit mechanism, and the return spring 40 can be directly arranged at the bottom of the support seat 10, but in order to ensure that it is not affected by the external environment during its operation, in a specific embodiment of the present invention, the support seat 10 has a accommodating space 14, and an opening 15 extending along its length direction is provided at the second side 10b for connecting the accommodating space 14 with the external space, and the strap 20 located at the second side 10b extends into the accommodating space 14 through the opening 15 and is connected to the driving mechanism; in this way, the support member 30 and its guide and limit mechanism, and the return spring 40 are all arranged in the accommodating space 14, and a through hole is provided on the support seat 10 located at the first side 10a for the traction member 50 to be led out and connected to the driving source.

[0053] According to the extracorporeal counterpulsation device provided by the present invention, in the present invention, the strap 20 can be set as an integrated structure. During each extracorporeal counterpulsation, the patient's limbs are inserted from one end into the accommodating area 1. For ease of use, the strap 20 is a two-stage structure. During the preparation process of extracorporeal counterpulsation, the patient's limbs are placed on the support seat 10, and then the two-stage structure of the strap 20 is fixed. In this way, the tightness can be conveniently adjusted to improve the adaptability of the extracorporeal counterpulsation device. Specifically, the two-stage strap 20 is composed of a first strap 21 and a second strap 22; wherein the first end of the first strap 21 is fixed to the first side 10a, and the second end extends in a direction close to the second side 10b; the strap body of the second strap 22 is abutted against the second side 10b, and its first end is connected to the drive mechanism, and the second end is detachably connected to the second end of the first strap 21;

[0054] The detachable connection may be a commonly used connection method in the art, such as a side release buckle. However, in order to avoid unnecessary compression of the patient's limbs, the detachable connection is preferably a Velcro, that is, the second end of the second strap 22 is connected to the second end of the first strap 21 via Velcro.

[0055] Further, in a specific embodiment of the present invention, the support seat 10 is provided with a support portion 16 with a concave arc upper surface, the lower surface of the support portion 16 is adjacent to and spaced from the upper surface of the support seat 10, and the support seat 10 adjacent to the second side 10b is provided with a first clamp 17 and a second clamp 18 extending along the length direction thereof and arranged in parallel and spaced, the first clamp 17 and the second clamp 18 are adjacent to and spaced from the end of the support portion 16, and the hanging end of the binding strap 20 fixed at the first side 10a extends inwardly along the space between the support portion 16 and the support seat 10 and is wound and fixed between the first clamp 17 and the second clamp 18;

[0056] By providing a support portion 16 with a concave arc-shaped upper surface, a larger contact area with the patient's limbs is provided during extracorporeal counterpulsation, thereby ensuring the effect of extracorporeal counterpulsation; by arranging the support portion 16 and the support seat 10 in close proximity to each other to provide space for the strap 20 to pass through, and cooperating with the first clamp 17 and the second clamp 18, the strap 20 can be passed through and fixed without the need for additional bolts or screws for locking and fixing.

[0057] Furthermore, in order to improve the locking and fixing effect of the binding belt 20 between the support seat 10 and the support portion 16, a ridge structure 19 extending along the length direction of the support seat 10 adjacent to the first side edge 10a is provided, and the support portion 16 is provided with a limiting groove 161 that cooperates with the ridge structure 19. The fixing effect of the binding belt 20 between the support seat 10 and the support portion 16 is ensured by the cooperation between the ridge structure 19 and the limiting groove 161.

[0058] The present invention also provides an external counterpulsation system based on the above-mentioned mechanical stretching type external counterpulsation device, such as Figure 8 As shown, the EVCP system includes a signal acquisition unit, a control unit and an execution unit; the signal acquisition unit is used to acquire human ECG signals and transmit them to the control unit, and includes a lead wire electrically connected to the control unit; the control unit processes the received human ECG signals, calculates the counterpulsation cycle and generates a counterpulsation pulse signal, sets a time delay associated with the counterpulsation pulse signal, and transmits the counterpulsation pulse signal to the execution unit; the servo motor in the execution unit receives the counterpulsation pulse signal transmitted by the control unit, and controls the EVCP device to perform the counterpulsation action; the execution unit includes the above-mentioned EVCP device.

[0059] Furthermore, the EVCP system also includes a display unit. The control unit stores real-time data and transmits the data to the display unit, which displays the electrocardiogram.

[0060] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A mechanical stretching external counterpulsation device, characterized in that: The invention comprises a support seat (10) having a first side (10a) and a second side (10b) opposite to each other, wherein a strap (20) is fixed to the first side (10a), the strap (20) extends toward the second side (10b), and the strap body (20) and the support seat (10) between the first side (10a) and the second side (10b) form a receiving area (1) for inserting a patient's limb into the receiving area; The binding belt (20) located at the second side edge (10b) is connected to the driving mechanism and is driven by the driving mechanism to expand or reduce the size of the accommodating area (1); Wherein, a support member (30) extending in the width direction of the binding belt (20) located at the second side edge (10b) is provided, and the driving mechanism is connected to the support member (30) and is used for pulling the support member (30) to translate and drive the binding belt (20) to expand or shrink the accommodating area (1); A guide rod (11) is provided at the second side edge (10b) of the support seat (10) and is arranged to extend along the length direction thereof, and the belt body of the binding belt (20) is passed around the rod body of the guide rod (11) and forms a guiding cooperation therewith; Both ends of the guide rod (11) are rotatably arranged on the support seat (10) via bearings; Slide blocks (31) are fixed to both ends of the support member (30), and the slide blocks (31) form a sliding guide fit with a linear guide rail (12) arranged between the first side edge (10a) and the second side edge (10b); The two ends of the support member (30) are respectively provided with grooves (32) located at the upper side surface, the lower side surface and the end surface, and a ball (33) is arranged in the groove (32), and the ball (33) and the slide groove (13) arranged between the first side edge (10a) and the second side edge (10b) form a sliding guide fit; The driving mechanism comprises: a driving source, wherein a power output end of the driving source is connected to the support member (30) and is used to pull the support member (30) and drive the binding belt (20) to move so as to reduce the size of the accommodating area (1); a return spring (40), one end of the return spring (40) being connected to the support member (30), and the elastic force of the return spring (40) being used to drive the belt body of the binding belt (20) to move toward the second side edge (10b); A traction member (50) is provided between the power output end of the driving source and the support member (30), one end of the traction member (50) is fixed to the support member (30), and the other end is fixedly connected to the power output end of the driving source; The portion of the traction member (50) located outside the support seat (10) is also sleeved with a sleeve (51), and one end of the sleeve (51) adjacent to the support seat (10) is fixed to the support seat (10); The support seat (10) has a containing space (14), and an opening (15) extending along the length direction thereof is provided at the second side edge (10b) for connecting the containing space (14) with an external space, and a binding belt (20) located at the second side edge (10b) extends into the containing space (14) through the opening (15) and is connected to the driving mechanism; The binding strap (20) is a two-section structure, wherein the first end of the first section of the binding strap (21) is fixed at the first side edge (10a), and the second end extends in a direction close to the second side edge (10b); The second strap section (22) has a strap body abutting against the second side edge (10b), a first end of which is connected to the driving mechanism, and a second end of which is detachably connected to the second end of the first strap section (21); The second end of the second strap (22) is connected to the second end of the first strap (21) via Velcro; The support seat (10) is provided with a support portion (16) whose upper surface is in a concave arc shape, the lower surface of the support portion (16) and the upper surface of the support seat (10) are arranged adjacent to and spaced from each other, and the support seat (10) adjacent to the second side edge (10b) is provided with a first clamp (17) and a second clamp (18) extending along its length direction and arranged in parallel and spaced from each other, the first clamp (17) and the second clamp (18) being adjacent to and spaced from the end of the support portion (16), and the hanging end of the binding belt (20) fixed at the first side edge (10a) extending inwardly along the space between the support portion (16) and the support seat (10) and being wound around and fixed between the first clamp (17) and the second clamp (18); A protruding structure (19) extending along its length direction is provided on the support seat (10) adjacent to the first side edge (10a), and a limiting groove (161) cooperating with the protruding structure (19) is provided on the support portion (16); The cooperation between the raised structure (19) and the limiting groove (161) improves the fixing effect of the binding belt (20) between the supporting seat (10) and the supporting portion (16).

2. A mechanical stretching external counterpulsation system, characterized in that: It includes a signal acquisition unit, a control unit and an execution unit; The signal acquisition unit is used to collect human electrocardiogram signals and transmit them to the control unit, and includes a lead wire electrically connected to the control unit; The control unit processes the received human electrocardiogram signal, calculates the counterpulsation cycle and generates a counterpulsation pulse signal, sets a time delay associated with the counterpulsation pulse signal, and transmits the counterpulsation pulse signal to the execution unit; The servo motor in the execution unit receives the counterpulsation pulse signal transmitted by the control unit, and controls the external counterpulsation device to perform the counterpulsation action; The execution unit includes the mechanical stretching external counterpulsation device as described in claim 1.

3. The mechanical stretching external counterpulsation system according to claim 2, characterized in that: It also includes a display unit; the control unit stores real-time data and transmits the data to the display unit, and the display unit displays the electrocardiogram.

Images