CN201870927U - Portable cardio-pulmonary resuscitation device - Google Patents

Abstract

The utility model discloses a portable cardio-pulmonary resuscitation device, which comprises a supporting bracket, a main body box and a positioning auxiliary frame, wherein the positioning auxiliary frame is fixedly connected with the supporting bracket; the main body box is restrained on the positioning auxiliary frame through a guide rail of the positioning auxiliary frame; a stepping motor, a motion positioning frame, a ventilating box, a lead screw, an auxiliary motor, a singlechip, a motor driving plate, a first unilateral bearing, a cam, a second unilateral bearing, a pressing head, a check valve, a coupler, a piston, a crank connecting rod, an eccentric shaft sleeve, a second check valve and a positioning frame for the pressing head are arranged in the main body box; and the main body box is connected with the supporting bracket through the lead screw; and the main body box moves up and down in the positioning auxiliary frame under the driving of the lead screw. The device has simple operation, is convenient to carry and is applicable to smaller medical rescuing units and required places.

Description

Portable device for resuscitating heart and pulmones

Technical field

This utility model belongs to technical field of medical instruments, particularly a kind of portable device for resuscitating heart and pulmones.

Background technology

Cardio-pulmonary resuscitation (CPR) is at breathing the rescue key measure that emergency case critical patient taked that heart beating stops, be that external chest compression forms independently beating of temporary transient artificial circulation and recovery, adopt the artificial respiration to replace autonomous respiration, multiple ventricular fibrillation is changeed in electric defibrillation fast, and uses vasoactive agent to recover autonomous circulation emergency treatment technique again as early as possible.The purpose of cardio-pulmonary resuscitation is open airway, rebuilds and breathe and circulation.And there is following disadvantage in the artificial human body cardio-pulmonary resuscitation (cardiopulmonaryresuscitation CPR) of tradition:

CPR specification requirement height all has certain requirement for the position of pushing, frequency and dynamics etc., and non-specialized-technical personnel are difficult to heart is effectively pushed.If the professional and technical personnel can not be in time, regular meeting affects adversely breathing sudden cardiac arrest patient's timely rescue.

Only can provide 20%～30% of normal blood confession even accept the CPR maneuver of formal training.

The closed cardiac massage physical demands is big, and the staff is difficult to accomplish that continuous 30min implements the criterion standard and pushes, for guaranteeing that pushing effect needs to substitute repeatedly.Substitute to cause often and push interruption, influence patient's resuscitation effect.

Grasp when bad when free-hand dynamics of pushing and amplitude, often cause complication such as patient's fracture of rib, pneumothorax.

To sum up, free-hand cardio-pulmonary resuscitation is because there are many deficiencies in the limit of human body, and especially to hinder under the disaster scene that the patient need succour these disadvantages in a large number more outstanding having.

For addressing this problem, many countries and hospital have developed various automatic cardiopulmonary resuscitators one after another.The breast abdomen of domestic and international existing device for resuscitating heart and pulmones such as the research of Chinese biological Medicine Research Inst. is alternately pushed device for resuscitating heart and pulmones.But this device for resuscitating heart and pulmones is used for indoor relief, need have externally fed equipment that the energy is provided.Though multiple functional effect is outstanding, bulkyly carry inconvenience, involve great expense.And for example 1007 Sa Bo thumper resuscitators of the U.S. and QNS-1B type Heart-lung restoring instrument are to utilize air pump that power is provided, and cost an arm and a leg.Can't rescue unit and have the place of demand to dispose in less medical treatment.

The utility model content

The technical problem that this utility model solved is to provide a kind of portable device for resuscitating heart and pulmones simple to operate.

The technical solution that realizes this utility model purpose is: a kind of portable device for resuscitating heart and pulmones comprises bracing frame, main body case and location auxiliary frame; The location auxiliary frame is connected mutually with bracing frame, main body case constrains on the auxiliary frame of location by the guide rail of location auxiliary frame, described main body case inside is provided with motor, motion positions frame, vent box, leading screw, stand-by motor, single-chip microcomputer and motor-driven plate, first unilateral bearing, cam, second unilateral bearing, press head, check valve, shaft coupling, piston, crank connecting link, excentric sleeve, second check valve, press head posting, main body case is connected with bracing frame by leading screw, and this main body case is moving up and down in the auxiliary frame of location under the drive of leading screw;

Stand-by motor is connected with leading screw by shaft coupling, moving up and down of control leading screw, the output shaft of motor by gear respectively with first unilateral bearing, second unilateral bearing is connected, drive its rotation, wherein first unilateral bearing is connected with crank connecting link by gear, the other end of crank connecting link is provided with piston, this piston is positioned at vent box inside, unilateral bearing is converted to moving up and down of piston by crank connecting link with its gyration, first check valve and second check valve are set on the vent box, wherein first check valve is connected with extraneous air or oxygen case, second check valve is connected with the medical respiration face shield, second unilateral bearing is connected with excentric sleeve on the cam by connecting axle, described excentric sleeve is positioned at the cam base circle home position, the other end of cam contacts with press head top, can drive press head during the cam rotation and move up and down in the press head posting, and this posting is connected mutually with the casing of main body case; The switched in opposite of above-mentioned first unilateral bearing, second unilateral bearing, motor drive different unilateral bearing rotations when rotating and reverse.

This utility model compared with prior art, its remarkable advantage: 1) simple to operate, easy to carry, be applicable to that less medical treatment rescues unit and the place of demand is arranged; 2) use theory of mechanics driving thereby cheap, and better than artificial heart-lung resuscitation effect; 3) can adapt to patient thoracic cavity size automatically, and reach according to pressing depth suitable; 4) pass on the patient, all can keep stablizing continuing to push in the stair activity process or in the ambulance in advancing, can effectively eliminate the pause of pushing that may cause the reduction of coronary perfusion pressure.

Below in conjunction with accompanying drawing this utility model is described in further detail.

Description of drawings

Fig. 1 is a portable device for resuscitating heart and pulmones structural front view of the present utility model.

Fig. 2 is a portable device for resuscitating heart and pulmones structure left view of the present utility model.

Fig. 3 is this device workflow diagram.

Fig. 4 is cam profile curve figure.

Fig. 5 is a unilateral bearing transmission key diagram.

Fig. 6 is that excentric sleeve cooperates figure with cam.

Fig. 7 drives the main body case motion diagram for leading screw.

The specific embodiment

In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 5, Fig. 6, Fig. 7, a kind of portable device for resuscitating heart and pulmones of the present utility model comprises bracing frame 1, main body case 20 and location auxiliary frame 17; Location auxiliary frame 17 is connected mutually with bracing frame 1, main body case 20 constrains on the auxiliary frame 17 of location by the guide rail of location auxiliary frame 17, described main body case 20 inside are provided with motor 2, motion positions frame 3, vent box 4, leading screw 5, stand-by motor 6, single-chip microcomputer and motor-driven plate 7, first unilateral bearing 8, cam 9, second unilateral bearing 10, press head 11, check valve 12, shaft coupling 13, piston 14, crank connecting link 15, excentric sleeve 16, second check valve 18, press head posting 19, main body case 20 is connected with bracing frame 1 by leading screw 5, this main body case 20 is moving up and down in the auxiliary frame 17 of location under the drive of leading screw 5, and so this device just can be adjusted height so that press head 11 is attached to patient's chest all the time automatically at different thoracic cavities thickness.

Stand-by motor 6 is connected with leading screw 5 by shaft coupling 13, moving up and down of control leading screw 5, the output shaft of motor 2 by gear respectively with first unilateral bearing 8, second unilateral bearing 10 is connected, drive its rotation, wherein first unilateral bearing 8 is connected with crank connecting link 15 by gear, the other end of crank connecting link 15 is provided with piston 14, this piston is positioned at vent box 4 inside, unilateral bearing 8 is converted to moving up and down of piston 14 by crank connecting link 15 with its gyration, first check valve 12 and second check valve 18 are set on the vent box 4, wherein first check valve 12 is connected with extraneous air or oxygen case, second check valve 18 is connected with the medical respiration face shield, second unilateral bearing 10 is connected with excentric sleeve 16 on the cam 9 by connecting axle, described excentric sleeve 16 is positioned at cam 9 basic circle home positions, the other end of cam 9 contacts with press head 11 tops, can drive press head 11 during the cam rotation and move up and down in press head posting 19, this posting is connected mutually with the casing of main body case 20; The switched in opposite of above-mentioned first unilateral bearing 8, second unilateral bearing 10, motor 2 drive different unilateral bearing rotations when rotating and reverse.Here use the characteristic of unilateral bearing only to make and just can control this device respectively to patient's chest compression with to the action of lung ventilation, effectively save the inner space, make device be more convenient for carrying with a motor 2.

The driven member of cam 9 (being press head 11) stroke is h=50mm, peak acceleration amax=1.5g in the motor process.In order to make cam 9 reach the effect that medical requirement pushes and the stationarity of motion, the selected characteristics of motion of choosing is as follows:

Rise: sinusoidal accelerated motion; Backhaul: cosine accelerated motion;

Base radius r ₀=60mm TP curve rectangular coordinate parametric equation is as follows:

$\left\{\begin{array}{cc}X=(s+r_0)& \cos f-\mathrm{ds}/\mathrm{df}\sin f\\ Y=(s+r_0)& \sin f+\mathrm{ds}/\mathrm{df}\cos f\end{array}\right.$

In the formula, s represents the displacement of cam follower (being press head 11), and f is corresponding point and circle center line connecting and X-axis angle.Cam contour sees Fig. 4 for details.

The side of described cam 9 is provided with two projectioies, and excentric sleeve 16 peripheries that are mated are provided with the even number groove, and two protruding lines are by the center of circle of excentric sleeve 16, matches with groove on the excentric sleeve 16.This cam is adjustable to adapt to overweight people and thin chipper's the demand of pushing between 3 to 5cm with the chest compression degree of depth that makes this device cooperating of excentric sleeve.When changing according to pressing depth, only need excentric sleeve 16 extracted and reverse suitable angle and insert cam 9 again and get final product.

The internal mechanism work process of portable device for resuscitating heart and pulmones of the present utility model is: bracing frame 1 is opened, by the base plate indication patient body is kept flat on the base plate, and put on breathing mask (being connected with check valve 11) for it.After starting on and off switch, Single-chip Controlling stand-by motor 6 turns clockwise, driving the relative bracing frame of entire body part by leading screw 5 moves downward, the pick off of press head 11 is exported a low-voltage to single-chip microcomputer after touching human body, stand-by motor 6 stops operating immediately, and press head 11 no longer descends.Motor 2 begins to rotate counterclockwise, and drives unilateral bearing 10 and then 9 rotations of control cam, and press head 11 moves up and down and pushes patient's cardiopulmonary position.Single-chip microcomputer reaches setting value back motor 2 and stops operating according to sending umber of pulse calculated step motor 2 number (being compression number) of turn-taking, and starts stand-by motor 6 and be rotated counterclockwise and drive main body section and rise.Stand-by motor shut down after rising reached setting height, and leading screw 5 self-lockings make main body section remain on setting height.Single-chip Controlling motor 2 turns clockwise then, drive crank connecting link 15 by unilateral bearing 8, the piston 14 of control breathing system moves up and down, wherein move downward stylish fresh oxygen or air and enter in the respiratory cavity 4 by check valve 12, piston moves upward and then the intracavity air or oxygen is squeezed into patient's lung ventilation by check valve 11.Motor 2 number of revolutions (promptly to patient's lung ventilation number of times) reach the setting value back by the Single-chip Controlling stop motion, and stand-by motor 6 starts and makes main body section upwards rise repeating said steps.This device will continue always that before the patient heart beating occurs or presses the emergency shutdown button patient is carried out cardiopulmonary and push.

Claims (3)

1. a portable device for resuscitating heart and pulmones is characterized in that, comprises bracing frame [1], main body case [20] and location auxiliary frame [17]; Location auxiliary frame [17] is connected mutually with bracing frame [1], main body case [20] constrains on the location auxiliary frame [17] by the guide rail of location auxiliary frame [17], described main body case [20] inside is provided with motor [2], motion positions frame [3], vent box [4], leading screw [5], stand-by motor [6], single-chip microcomputer and motor-driven plate [7], first unilateral bearing [8], cam [9], second unilateral bearing [10], press head [11], check valve [12], shaft coupling [13], piston [14], crank connecting link [15], excentric sleeve [16], second check valve [18], press head posting [19], main body case [20] is connected with bracing frame [1] by leading screw [5], and this main body case [20] is moving up and down in location auxiliary frame [17] under the drive of leading screw [5];

Stand-by motor [6] is connected with leading screw [5] by shaft coupling [13], moving up and down of control leading screw [5], the output shaft of motor [2] by gear respectively with first unilateral bearing [8], second unilateral bearing [10] is connected, drive its rotation, wherein first unilateral bearing [8] is connected with crank connecting link [15] by gear, the other end of crank connecting link [15] is provided with piston [14], this piston is positioned at vent box [4] inside, unilateral bearing [8] is converted to moving up and down of piston [14] by crank connecting link [15] with its gyration, first check valve [12] and second check valve [18] are set on the vent box [4], wherein first check valve [12] is connected with extraneous air or oxygen case, second check valve [18] is connected with the medical respiration face shield, second unilateral bearing [10] is connected with excentric sleeve [16] on the cam [9] by connecting axle, described excentric sleeve [16] is positioned at cam [9] basic circle home position, the other end of cam [9] contacts with press head [11] top, can drive press head [11] during the cam rotation and move up and down in press head posting [19], this posting is connected mutually with the casing of main body case [20]; The switched in opposite of above-mentioned first unilateral bearing [8], second unilateral bearing [10], motor [2] drive different unilateral bearing rotations when rotating and reverse.

2. portable device for resuscitating heart and pulmones according to claim 1 is characterized in that, the driven member of cam [9] is that the stroke of press head [11] is h=50mm, peak acceleration amax=1.5g in the motor process, and the selected characteristics of motion is as follows:

Rise: sinusoidal accelerated motion; Backhaul: cosine accelerated motion;

Base radius r0=60mm TP curve rectangular coordinate parametric equation is as follows:

$\left\{\begin{array}{cc}X=(s+r_0)& \cos f-\mathrm{ds}/\mathrm{df}\sin f\\ Y=(s+r_0)& \sin f+\mathrm{ds}/\mathrm{df}\cos f\end{array}\right..$

3. portable device for resuscitating heart and pulmones according to claim 1, it is characterized in that, the side of described cam [9] is provided with two projectioies, the excentric sleeve that is mated [16] periphery is provided with the even number groove, two protruding lines are by the center of circle of excentric sleeve [16], match with groove on the excentric sleeve [16].

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