CN210114652U - Device for pressing heart in chest - Google Patents

Abstract

The utility model discloses a device for pressing the heart in the chest. The device comprises a positioning plate, an air bag and an air delivery tube. The air bag is fixed on the inner side of the positioning plate and communicated with the air delivery tube. The air bag is inflated toward the left ventricle of the heart through inflation of the air delivery tube and gradually presses the surface of the left ventricle. The device for pressing the heart in the chest of the utility model is beneficial to avoid affecting the normal function of the heart, and will not be separated from the heart when the heart is beating normally; Inflation, gradually approach the left ventricle during the expansion process and form a pressure on the left ventricle. After pressing to a certain extent, the balloon is then deflated by outputting gas through the trachea. During the contraction process, it gradually moves away from the left ventricle to reset the left ventricle. A certain frequency of intrathoracic cardiac compressions.

Description

A device for intrathoracic compression of the heart

technical field

The utility model relates to the field of medical devices, in particular to a device for pressing the heart in the chest.

Background technique

Cardiopulmonary cerebral resuscitation (CPR) is mainly aimed at cardiac arrest, a series of measures aimed at establishing effective circulation as soon as possible and improving cardiac output; patients after thoracotomy often also need CPR; The equipment used for cardiac resuscitation is generally an external cardiac presser, which is used to perform cardiac compression outside the patient so that the heart can be resuscitated. However, the compression effect on the outside of the chest itself is not obvious due to the limitation of the sternum, and patients who have undergone cardiac surgery have poor sternum stability, and the compression effect is even less obvious; in addition, for some open chest trauma, or trauma complicated by trauma When multiple ribs are fractured and cardiac arrest occurs, there is a greater risk of external cardiac compression; at this time, clinical emergency rescue will require open-chest manual cardiac compression, called intrathoracic cardiac compression; however, manual intrathoracic cardiac compression is required. Pressing is not only inefficient, but also has disadvantages such as large pressing wounds, uneven pressing force, and inability to continue pressing for a long time.

In view of the above-mentioned defects, some intra-thoracic cardiac compression devices have also appeared in the prior art. For example, patent CN106726439A discloses an intra-thoracic cardiac compression device, which includes a compression bag for wrapping the heart in the body and a compression force for the compression bag. The main machine is connected with the extruding bag through a ventilation pipeline. The extruding bag includes an outer bag and an inner bag with elasticity. The closing end of the squeeze bag is provided with a closing mechanism, and the squeeze bag adopts a bag-like structure, which is repeatedly inflated and deflated with a certain frequency given by the host, thereby simulating bare-handed cardiac compression, solving the inconvenience caused by bare-handed chest cardiac compression, and achieving The purpose of continuously and evenly squeezing the heart in the chest.

However, in the above-mentioned presser, the compression bag is positioned by wrapping the heart, which actually has major drawbacks in clinical practice: first, the anatomical structure of the heart and its connection with other blood vessels make it unsuitable for Otherwise, it is easy to affect the normal function of the heart; secondly, when the heart beats, its contraction movement is retracted from the apex, so when the sleeve is used, once the heart beats, the squeeze bag is easy to be fixed. If the heart is detached, there is a possibility of failure of compression, and there is a great safety hazard.

Therefore, there is a need for a device for intra-thoracic compression of the heart, which is beneficial to avoid affecting the normal function of the heart, and at the same time, is beneficial to avoid detachment from the heart.

Utility model content

In view of this, the purpose of the present invention is to provide a device for intrathoracic compression of the heart, which is beneficial to avoid affecting the normal function of the heart, and at the same time, is beneficial to avoid detachment from the heart.

The utility model provides a device for pressing the heart in the chest. The device comprises a positioning plate, an air bag and an air delivery tube. The air bag is fixed on the inner side of the positioning plate and communicated with the air delivery tube. The air bag is inflated toward the left ventricle of the heart through inflation of the air delivery tube and gradually presses the surface of the left ventricle.

As a further improvement to the above technical solution, the chest wall fixing portion includes at least two through holes, and the through holes are used to sew the positioning plate on the inner side of the chest wall in cooperation with sutures.

As a further improvement to the above technical solution, the chest wall fixing portion includes three through holes, and the three through holes are distributed in a triangle.

As a further improvement to the above technical solution, the positioning plate is a circular plate or an elliptical plate structure, and the through holes are evenly distributed on the positioning plate.

As a further improvement to the above technical solution, the outer surface of the airbag after inflation is a smooth arc-shaped curved surface.

As a further improvement to the above technical solution, the positioning plate is made of hard silica gel or medical alloy material.

As a further improvement to the above technical solution, the airbag is made of soft silica gel or flexible film.

As a further improvement to the above technical solution, the bottom of the airbag is fixedly connected to the inner side of the positioning plate, the inner side of the positioning plate is provided with an air delivery port that communicates with the inner cavity of the airbag, and the positioning plate is An air delivery channel is provided in communication with the gas delivery port, one end of the gas delivery pipe is connected with the gas delivery channel in a detachable manner, and the other end is used for connecting with an inflatable device.

As a further improvement to the above technical solution, the inflatable equipment connected with the air delivery pipe includes a tee, a manual inflatable bag and an electric inflator, and the end of the air delivery pipe extending from the human body is connected with the air outlet end of the tee, The two air inlet ends of the three-way piece are respectively connected to the air outlet end of the manual air bag and the air outlet end of the electric inflator.

As a further improvement to the above technical solution, the electric inflator includes a bracket, a reset cylinder and an air cylinder fixed on the bracket, the air cylinder is provided with a piston, and the cylinder rod of the reset cylinder extends into the air cylinder and is connected to the piston and used. The driving piston slides back and forth in the axial direction of the air cylinder, and the bottom of the air cylinder is provided with an air outlet, and the air outlet is connected with the air outlet end of the three-way piece.

Through the above disclosure, the utility model has the following beneficial technical effects:

The device for pressing the heart in the chest of the utility model, for patients after thoracotomy, the positioning plate can be fixed on the inner side of the left chest wall of the patient, and the air bag can be aligned with the left ventricle of the heart, and the positioning plate and the air bag can be placed in the left ventricle of the heart. It is not in contact with the heart in the original state. Compared with the positioning method of the jacket, this method is beneficial to avoid affecting the normal function of the heart, and it will not be separated from the heart when the heart is beating normally; one end of the airway is connected to the air bag, and the other end is It is extracted from the patient's body. When cardiac compression is required, the balloon enters the gas through the trachea and gradually expands. During the inflation process, it gradually approaches the left ventricle and forms a pressure on the left ventricle. During the contraction, it gradually moves away from the left ventricle to reset the left ventricle, thereby forming a certain frequency of intrathoracic cardiac compression measures. thoracotomy bleeding.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is A-A sectional view in Fig. 1;

FIG. 3 is a control principle diagram of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments, based on the The embodiments of the present invention, and all other embodiments obtained by those of ordinary skill in the art without creative work, fall within the protection scope of the present invention.

As shown in Figures 1 to 3: this embodiment provides a device for intrathoracic compression of the heart, the device includes a positioning plate 1, a balloon 2 and an air delivery tube 3, the positioning plate 1 is provided with a The chest wall fixing part positioned on the inner side of the left chest wall of the human body, the air bag 2 is fixed on the inner side of the positioning plate 1 and communicated with the air delivery tube 3, the air bag 2 is inflated through the air delivery tube 3 to expand toward the left ventricle of the heart and gradually press the left ventricle surface. The positioning plate 1 can be a circular plate or an elliptical plate structure, which is relatively flat, and its thickness can be, for example, 8mm-12 mm; at least one side of the positioning plate 1 close to the chest wall is a hard structure to achieve a firm positioning effect; for example, the positioning plate 1 It can be made of hard silicone or medical alloy materials. The airbag 2 is a flexible structure, which expands after inflation and contracts after deflation; in order to prevent the airbag 2 from causing damage to the heart, the airbag 2 is preferably made of soft silica gel or a flexible film, and the outer surface of the airbag 2 is inflated. To be a smooth arc-shaped curved surface, the entire airbag 2 can be, for example, a hemispherical shape.

Using the device for intrathoracic compression of the heart in this embodiment, for patients after thoracotomy, the positioning plate 1 can be fixed on the inside of the patient's left chest wall, and the balloon 2 can be aligned with the left ventricle of the heart. 1 and the airbag 2 are not in contact with the heart in the original state. Compared with the positioning method of the jacket, this method is beneficial to avoid affecting the normal function of the heart, and will not be separated from the heart when the heart is beating normally; The air bag 2 is connected and the other end is drawn out from the patient's body. When cardiac compression is required, the air bag 2 enters the gas through the trachea 3 and expands gradually. During the expansion process, it gradually approaches the left ventricle and forms a pressure on the left ventricle, which is pressed to a certain extent. The rear air bag 2 is then contracted by outputting gas through the trachea 3. During the contraction process, it gradually moves away from the left ventricle to reset the left ventricle, thereby circulating to form a certain frequency of intrathoracic cardiac compression measures. Separated from the heart, for patients undergoing secondary surgery, it can effectively avoid thoracotomy bleeding caused by adhesions.

In this embodiment, the chest wall fixing part includes at least two through holes 4, the through holes 4 are used to cooperate with sutures to sew the positioning plate 1 on the inner side of the chest wall; the diameter of the through holes 4 can be used to complete the suturing operation That is, the number of through holes 4 is preferably three, and the three through holes 4 are distributed in a triangular shape to improve the positioning firmness of the positioning plate 1; the through holes 4 are evenly distributed on the positioning plate 1, when the positioning plate 1 When the shape is circular, the three through holes 4 are distributed in an equilateral triangle.

In this embodiment, the bottom of the airbag 2 is fixedly connected to the inner side of the positioning plate 1, and the inner side of the positioning plate 1 is provided with an air delivery port 5 that communicates with the inner cavity of the airbag 2, and the positioning plate 1 is provided with a gas delivery channel 6 communicating with the gas delivery port 5, one end of the gas delivery pipe 3 is connected with the gas delivery channel 6 in a detachable manner, and the other end is used for connecting with an inflatable device. The bottom of the airbag 2 can be an open structure, and the four sides of the bottom are fixedly connected (for example, by means of bonding) to the positioning plate 1; the diameter of the gas delivery port 5 can be 1/2 of the bottom surface of the airbag 2. Efficiency; the air passage 6 should avoid the through hole 4 to prevent interference; the positioning plate 1 at the end of the air passage 6 can be provided with a connector to facilitate the connection of the air pipe 3, for example, the air pipe 3 can be screwed. It is connected with the connector; the other end of the air delivery tube 3 can be embedded under the skin of the patient, and it can be cut and exposed at the corresponding position when pressing is required.

In this embodiment, the inflatable equipment connected with the air delivery pipe 3 includes a tee 7, a manual inflatable bag 9 and an electric inflator 10, and the inflatable equipment is arranged outside the human body; The air outlet ends of the three-way piece 7 are connected to each other, and the two air inlet ends of the three-way piece 7 are respectively connected to the air outlet end of the manual inflatable bag 9 and the air outlet end of the electric inflator 10 . The three-way piece 7 has three communicating ventilation ports, and the ventilation ports are connected with each component through a conduit; the three-way piece 7 can be, for example, an electronically controlled three-way valve; In terms of inflation, this air path is opposite when the air bag 2 is contracted; the manual inflatable bag 9 and the electric inflator 10 can be used alone or in combination; the manual inflatable bag 9 is convenient for medical personnel to operate urgently, and can make up for the deficiencies of the electric inflator 10 ; The electric inflator 10 can be an air pump structure.

In this embodiment, the electric inflator 10 includes a bracket 14, a reset cylinder 15 and an air cylinder 16 fixed on the bracket 14, the air cylinder 16 is provided with a piston 17, and the cylinder rod 18 of the reset cylinder 15 extends into the air cylinder 16 is connected to the piston 17 and is used to drive the piston 17 to slide back and forth axially along the air cylinder 16. The bottom of the air cylinder 16 is provided with an air outlet 19, and the air outlet 19 is connected with the air outlet of the tee 7; the reset cylinder 15 can be Connected to the external controller; the cylinder rod 18 of the reset cylinder 15 can be axially reciprocated and retracted, the piston 17 is sealed and slidably connected to the inner wall of the air cylinder 16, and the cylinder rod 18 drives the piston 17 to move down to remove the air between the piston 17 and the bottom of the air cylinder 16 The pressure is sent to the air bag 2 , or the cylinder rod 18 drives the piston 17 to move up to draw the air in the air bag 2 between the piston 17 and the bottom of the air cylinder 16 .

The above descriptions are only the embodiments of the present invention, and the common knowledge such as the well-known specific structures and characteristics in the solutions are not described too much here. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present utility model, several deformations and improvements can also be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the present utility model. The effect of the implementation of the new model and the practicability of the patent. The scope of protection claimed in this application should be based on the content of the claims, and the descriptions of the specific implementation manners in the description can be used to interpret the content of the claims.

Claims (10)

1. A device for intrathoracic compression of the heart, characterized in that: The device includes a positioning plate, an air bag and an air delivery tube, the positioning plate is provided with a chest wall fixing part for positioning it on the inner side of the left chest wall of the human body, the air bag is fixed on the inner side of the positioning plate and communicated with the air delivery tube, the The balloon is inflated toward the left ventricle of the heart by inflating it through the airway and gradually compresses the surface of the left ventricle. 2. A device for intrathoracic compression of the heart according to claim 1, wherein: The chest wall fixing part includes at least two through holes, and the through holes are used to sew the positioning plate on the inner side of the chest wall in cooperation with the suture. 3. A device for intrathoracic compression of the heart according to claim 2, wherein: The chest wall fixing portion includes three through holes, and the three through holes are distributed in a triangular shape. 4. A device for intrathoracic compression of the heart according to claim 2, wherein: The positioning plate is a circular plate or an elliptical plate structure, and the through holes are evenly distributed on the positioning plate. 5. A device for intrathoracic compression of the heart according to claim 1, wherein: After the airbag is inflated, its outer surface is a smooth arc-shaped curved surface. 6. A device for intrathoracic compression of the heart according to claim 1, wherein: The positioning plate is made of hard silica gel or medical alloy material. 7. A device for intrathoracic compression of the heart according to claim 1, wherein: The airbag is made of soft silica gel or flexible film. 8. The device for intrathoracic compression of the heart according to any one of claims 1 to 7, wherein: The bottom of the airbag is fixedly connected to the inner side of the positioning plate, the inner side of the positioning plate is provided with a gas delivery port that communicates with the inner cavity of the airbag, and the positioning plate is provided with a gas delivery port that communicates with the gas delivery port. An air duct, one end of the air delivery pipe is connected with the air duct in a detachable manner, and the other end is used for connecting with an inflatable device. 9. The device for intrathoracic compression of the heart according to any one of claims 1 to 7, wherein: The inflatable equipment connected with the air delivery pipe includes a three-way piece, a manual inflatable bag and an electric inflator. The gas ends are respectively connected with the gas outlet of the manual inflatable bag and the gas outlet of the electric inflator. 10. A device for intrathoracic compression of the heart according to claim 9, characterized in that: The electric inflator includes a bracket, a reset cylinder and an air cylinder fixed on the bracket, the air cylinder is provided with a piston, and the cylinder rod of the reset cylinder extends into the air cylinder to be connected with the piston and is used to drive the piston to slide back and forth along the axial direction of the air cylinder. The bottom of the air cylinder is provided with an air outlet, and the air outlet is connected with the air outlet end of the tee.

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