CN215536439U

CN215536439U - Novel electric cardiopulmonary resuscitator

Info

Publication number: CN215536439U
Application number: CN202122190251.9U
Authority: CN
Inventors: 赵凯
Original assignee: Huzhou Hongguang Machinery Technology Co ltd
Current assignee: Huzhou Hongguang Machinery Technology Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-01-18
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to the field of medical equipment, in particular to a novel electric cardio-pulmonary resuscitator, which comprises a power unit and an execution unit which are arranged separately, wherein the power unit and the execution unit are driven by a flexible shaft; the execution unit comprises a gear reducer and a pressing mechanism, a common shaft is arranged between the gear reducer and the pressing mechanism, and the common shaft is a power output shaft of the gear reducer and a power input shaft of the pressing mechanism; the gear reducer is a small-tooth-difference planetary transmission mechanism. The execution unit of the novel electric cardiopulmonary resuscitator adopts a common shaft and a small-tooth-difference planetary transmission mechanism, so that the execution unit is highly integrated, the space is greatly saved, the number of parts is reduced, the weight is lightened, and the manufacturing cost is reduced. Only the high and light-weight execution unit is arranged on the chest of the patient during compression, and free rebound of the chest of the patient is not influenced.

Description

Novel electric cardiopulmonary resuscitator

Technical Field

The utility model relates to the field of medical instruments, in particular to a novel electric cardio-pulmonary resuscitator.

Background

For patients with cardiac arrest, first aid must be administered, and the main emergency currently used is cardiopulmonary resuscitation (CPR). Cardiopulmonary resuscitation mainly involves two processes, an effective chest compression at a certain frequency and a supply of respiratory oxygen. Because manual compression operation consumes huge physical strength, and generally manual compression often cannot reach the required depth and frequency, the effective compression rate is only 40-50%, the heart compression quality cannot be ensured, and the optimal rescue opportunity of emergency patients is influenced.

Therefore, the cardiopulmonary resuscitation device is adopted in the prior art to replace the manual compression for performing the cardiopulmonary resuscitation. The existing cardiopulmonary resuscitator mainly comprises pneumatic and electric. The pneumatic cardio-pulmonary resuscitator takes compressed oxygen as a power source, and the oxygen cylinder is too heavy, belongs to a pressure container and has certain danger, so the pneumatic cardio-pulmonary resuscitator is not suitable for being carried and placed in a working place. The conventional electric cardiopulmonary resuscitator is generally overlarge in volume and weight, and the cardiopulmonary resuscitator can directly press the chest when being pressed, so that the self-rebound of the chest can be seriously limited, and the pressing quality is influenced.

Therefore, how to reduce the volume and the weight of the electric cardiopulmonary resuscitator while ensuring the quality of the cardiac compression is a technical problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a novel electrically powered cardiopulmonary resuscitator that addresses the aforementioned problems in the prior art.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a novel electric cardiopulmonary resuscitator comprises a power unit and an execution unit which are separately arranged, wherein the power unit and the execution unit are in transmission through a flexible shaft; the execution unit comprises a gear reducer and a pressing mechanism, a common shaft is arranged between the gear reducer and the pressing mechanism, and the common shaft is a power output shaft of the gear reducer and a power input shaft of the pressing mechanism; the gear reducer is a small-tooth-difference planetary transmission mechanism.

Preferably, the small tooth difference planetary transmission mechanism comprises a torque input shaft, an internal gear, a planetary gear, a torque output pin hole, a balance weight, an eccentric sleeve and the common shaft.

Preferably, the transmission ratio of the small tooth difference planetary transmission mechanism is 20-100.

Preferably, the execution unit comprises a left box body and a right box body, the pressing mechanism is arranged in the left box body, the gear reducer is arranged in the right box body, and the left box body and the right box body are communicated through the common shaft and are of an integrated structure.

Preferably, the pressing mechanism comprises a crank, a roller, a column, a sliding member, a chute, a pressing head and the common shaft; one end of the crank is fixedly connected with the common shaft, and the other end of the crank is connected with the roller; the sliding component is sleeved on the upright post, and the idler wheel is arranged in the chute on the sliding component, so that the sliding component can reciprocate up and down along the direction of the upright post along with the rotation of the crank; the lower part of the sliding component is connected with the pressing head.

Preferably, the power unit comprises a motor and a power source.

The utility model has the beneficial effects that:

the utility model provides a novel electric cardiopulmonary resuscitator, which comprises a power unit and an execution unit which are separately arranged, wherein only the execution unit is arranged on the chest of a patient, and free resilience of the chest of the patient is not influenced during pressing. The execution unit comprises a gear reducer and a pressing mechanism, and the gear reducer and the pressing mechanism are integrally arranged, so that the space is greatly saved, the number of parts is reduced, the weight is lightened, and the manufacturing cost is reduced. The gear reducer adopts a planetary transmission mechanism with small tooth difference, and realizes large transmission ratio by only using a pair of internal gear pairs with small tooth difference, and the gear reducer is light in weight and small in size.

Drawings

FIG. 1 is a schematic diagram of the novel electric cardiopulmonary resuscitator of the present invention;

FIG. 2 is a schematic diagram of an execution unit according to an embodiment of the present invention;

FIG. 3 is a schematic side sectional view of an execution unit according to an embodiment of the present invention;

FIG. 4 is a schematic side sectional view of a common shaft in an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of a common shaft in the embodiment of the present invention;

FIG. 6 is a schematic front view of a planetary transmission mechanism with small tooth difference according to an embodiment of the present invention;

FIG. 7 is a schematic rear view of a planetary transmission with small tooth difference according to an embodiment of the present invention;

FIG. 8 is a schematic side view of a planetary transmission with small teeth difference according to an embodiment of the present invention;

FIG. 9 is a schematic view of the internal structure of the back side of the pressing mechanism in the embodiment of the present invention;

in the figure: 1-power unit, 2-execution unit, 3-flexible shaft, 21-gear reducer, 22-pressing mechanism, 201-execution unit right box, 202-execution unit left box, 203-bearing, 211-torque input shaft, 212-common shaft, 213-internal gear, 214-planetary gear, 215-torque output pin hole, 216-balance weight, 217-eccentric sleeve, 218-torque output pin, 221-crank, 222-roller, 223-upright post, 224-sliding component, 225-sliding groove and 226-pressing head.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

A novel electric cardiopulmonary resuscitator is shown in fig. 1, and in this embodiment, the cardiopulmonary resuscitator comprises a power unit 1 and an execution unit 2 which are separately arranged, and the power unit 1 and the execution unit 2 are driven by a flexible shaft 3. The novel electric cardiopulmonary resuscitator adopts a scheme that a power unit 11 is separated from an execution unit 2, wherein the power unit 1 comprises a motor and a power supply and is used for providing power for the execution unit 2; the execution unit 2 is used for executing a cardio-pulmonary resuscitation pressing function; because the power unit 1 and the execution unit 2 are driven by the flexible shaft 3, the chest of the patient can be pressed by cardiopulmonary resuscitation only by placing the lightweight execution unit 2, and the free rebound of the chest of the patient is not influenced.

As shown in fig. 2 and 3, the actuator unit 2 of the present embodiment includes a gear reducer 21 and a pressing mechanism 22, a common shaft 212 is disposed between the gear reducer 21 and the pressing mechanism 22, and the common shaft 212 is both a power output shaft of the gear reducer 21 and a power input shaft of the pressing mechanism 22.

In order to make the execution unit 2 have the lightest weight and the smallest volume on the premise of ensuring the functions, in the embodiment, the power output shaft of the gear reducer 21 in the execution unit 2 is directly used as the power input shaft of the pressing mechanism 22 to form a common shaft, and the gear reducer 21 and the pressing mechanism 22 are integrated through the common shaft. The common shaft 212 may be hollow as shown in fig. 4 and 5 to further reduce weight, and a blocking layer may be provided in the middle to prevent substances such as lubricating oil in the gear reducer 21 from flowing into the pressing mechanism 21.

In order to further reduce the weight and the volume of the actuator 2, as shown in fig. 6 to 8, the gear reducer 21 in this embodiment employs a planetary transmission mechanism with small tooth difference, specifically an involute gear pair with small tooth difference, and includes a torque input shaft 211, a common shaft 212, an internal gear 213, a planetary gear 214, a torque output pin hole 215, a counterweight 216, and an eccentric sleeve 217.

The small tooth difference planetary transmission is a modified gear transmission in which the difference between the numbers of the inner and outer gear teeth is small and the inner and outer gear teeth are meshed with each other, and the planetary gear 214 rotates while revolving along the inner gear 213. When the torque input shaft 211 is connected to the flexible shaft 3 and receives power from the power unit 1 to revolve the planetary gear 214, the planetary gear 214 rotates to drive the torque output pin 218 located in the torque output pin hole 215 to output power, so as to achieve a speed reduction effect with a low rotation speed and a large torque. The planetary transmission mechanism with small tooth difference has the characteristics of most compact size, minimum volume and lightest weight, and the embodiment realizes large transmission ratio by only using a pair of internal gear pairs with small tooth difference, the transmission ratio can reach 20, 30, 60 or even 100, and various special requirements can be met. Therefore, the planetary transmission mechanism with small tooth difference is used in the actuating unit 2, so that the requirement of large transmission ratio can be met, and the weight of the actuating unit 2 can be effectively reduced.

It should be noted that the torque output pin 218 is connected to the common shaft 212, specifically, the common shaft 212 has a pin hole corresponding to the torque output pin hole 215, and the torque output pin 218 fixes the two corresponding pin holes, so that the planetary gear 214 can rotate to drive the common shaft 212 to output torque.

As shown in fig. 9, the pressing mechanism 22 in this embodiment includes a crank 221, a roller 222, a post 223, a slide member 224, a slide groove 225, a pressing head 226, and a common shaft 212; one end of the crank 221 is fixedly connected with the common shaft 212, the other end of the crank 221 is connected with the roller 222, the common shaft 212 is used as a power input shaft of the pressing mechanism 22 and is also used as a crank shaft of the crank 221 to drive the crank to rotate; the sliding member 224 is sleeved on the upright 223, and the roller 222 is arranged in the sliding groove 225 on the sliding member 224, so that the sliding member 224 rotates along with the crank 221 and reciprocates up and down along the upright 223; the lower part of the sliding component 224 is connected with a pressing head 226, thereby realizing the cardio-pulmonary resuscitation pressing on the patient.

In order to further reduce the weight and volume of the actuator unit 2, in this embodiment, the actuator unit 2 includes a left housing 202 and a right housing 201, the pressing mechanism 22 is disposed in the left housing 202, the gear reducer 21 is disposed in the right housing 201, and the left housing 202 and the right housing 201 are communicated with each other by the common shaft 212, and are integrated. In general, the gear reducer 21 and the pressing mechanism 22 have separate housings, which often cause a waste of space when they are connected to each other, and further require parts such as a coupling, which increases the cost. In the embodiment, the right box body containing the gear reducer 21 and the left box body containing the pressing mechanism 22 are directly connected through the common shaft 212, the common shaft 212 is an output shaft of the gear reducer 21 and a crank shaft (input shaft) in the pressing mechanism 22, and the common shaft and the crank shaft share the same shaft and are completely integrated; meanwhile, the two box bodies are integrated, and a plurality of parts of the two parts are shared, so that the integral structure is greatly compressed, the minimum size and the lightest weight of the integral structure of the execution unit 2 are ensured, the manufacturing cost is reduced, and the integrity and the reliability are improved.

By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.

Claims

1. The novel electric cardiopulmonary resuscitator is characterized by comprising a power unit and an execution unit which are separately arranged, wherein the power unit and the execution unit are driven by a flexible shaft; the execution unit comprises a gear reducer and a pressing mechanism, a common shaft is arranged between the gear reducer and the pressing mechanism, and the common shaft is a power output shaft of the gear reducer and a power input shaft of the pressing mechanism; the gear reducer is a small-tooth-difference planetary transmission mechanism.

2. The novel electrically powered cardiopulmonary resuscitator of claim 1, wherein the small tooth difference planetary transmission comprises a torque input shaft, an internal gear, a planetary gear, a torque output pin hole, a counterweight, an eccentric sleeve, and the common shaft.

3. The novel electrically powered cardiopulmonary resuscitator of claim 1, wherein the gear ratio of the low-tooth-difference planetary gear is 20-100.

4. The novel electric cardiopulmonary resuscitator of claim 1, wherein the execution unit comprises a left box and a right box, the pressing mechanism is arranged in the left box, the gear reducer is arranged in the right box, and the left box and the right box are communicated through the common shaft and are of an integrated structure.

5. The novel powered cardiopulmonary resuscitator of claim 1, wherein the compression mechanism comprises a crank, a roller, a post, a sliding member, a chute, a compression head, and the common shaft; one end of the crank is fixedly connected with the common shaft, and the other end of the crank is connected with the roller; the sliding component is sleeved on the upright post, and the idler wheel is arranged in the chute on the sliding component, so that the sliding component can reciprocate up and down along the direction of the upright post along with the rotation of the crank; the lower part of the sliding component is connected with the pressing head.

6. The novel powered cardiopulmonary resuscitator of claim 1, wherein the power unit comprises a motor and a power source.