Pressure-sensitive pad for cardio-pulmonary resuscitation instrument

Abstract

The utility model provides a pressure-sensitive pad for a cardiopulmonary resuscitation instrument, which is characterized by comprising a first insulating layer, a second insulating layer and a pressure-sensitive pad, a first conductive layer disposed on the first insulating layer; the pressure-sensitive material layer is arranged on the first conductive layer; the second conductive layer is arranged on the pressure-sensitive material layer, and the first conductive layer is separated from the second conductive layer by the pressure-sensitive material layer; and the second insulating layer is arranged on the second conducting layer and is used for being in contact with the cardio-pulmonary resuscitation instrument. The pressure-sensitive pad for the cardio-pulmonary resuscitation instrument is small in size, light in weight, simple in structure, easy to manufacture, low in cost and convenient to use, and can be conveniently and accurately arranged at the optimal pressing position on the chest of a patient, and the weight of the whole device is reduced.

Description

Technical Field

[0001] The utility model relates to a cardiopulmonary resuscitation instrument, in particular to a pressure-sensitive pad used for the cardiopulmonary resuscitation instrument. Background Art

[0002] The cardiopulmonary resuscitation instrument can perform high-quality chest compression, increase the blood flow to the heart and brain of patients with cardiac arrest, and improve the success rate of the patient's restoration of blood flow and autonomous circulation. In the process of using the cardiopulmonary resuscitation instrument to perform chest compression on the patient, a force sensor is needed to sense the pressure and frequency of the compression. The existing force sensor includes a strain gauge arranged on a metal plate to form a Wheatstone bridge, and a plastic shell covering the strain gauge. When pressure is applied during cardiopulmonary resuscitation, the mechanical structure of the force sensor causes the strain on the metal plate connected to the strain gauge to change. Therefore, the change in the resistance of the strain gauge provides a changing electrical signal. However, this existing force sensor is large in size and weight, making it difficult to place it in the optimal compression position and causing the weight of the entire device to increase. In addition, this force sensor composed of multiple strain gauges, precisely cut metal sheets, and customized mechanical parts to maintain structural strength is not only complex in structure, difficult to assemble, and high in cost, but also requires compensation and debugging such as zero offset and thermal sensitivity offset, which is inconvenient to use.

[0003] Therefore, there is a need to improve the existing force sensors used in cardiopulmonary resuscitation devices. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects in the above-mentioned prior art and to provide a pressure-sensitive pad for a cardiopulmonary resuscitation device. The pressure-sensitive pad is not only small in size and light in weight, so it is convenient to accurately place it in the optimal pressing position on the patient's chest and reduce the weight of the entire device, but also has a simple structure, is easy to manufacture, has a low cost, and is easy to use.

[0005] According to one aspect of the utility model, there is provided a pressure-sensitive pad for a cardiopulmonary resuscitation apparatus, characterized in that the pressure-sensitive pad comprises:

[0006] The first insulating layer in contact with the patient's body;

[0007] a first conductive layer disposed on the first insulating layer;

[0008] a pressure-sensitive material layer disposed on the first conductive layer;

[0009] a second conductive layer disposed on the pressure-sensitive material layer, and the pressure-sensitive material layer separates the first conductive layer from the second conductive layer; and

[0010] A second insulating layer is disposed on the second conductive layer and is used for contacting the cardiopulmonary resuscitation device.

[0011] Preferably, a biocompatible adhesive is applied on the surface of the first insulating layer in contact with the patient's body.

[0012] Preferably, the first conductive layer is a conductive film and is bonded to the first insulating layer via a non-conductive adhesive, and the second conductive layer is a conductive film and is bonded to the pressure-sensitive material layer via a conductive adhesive.

[0013] Preferably, the first conductive layer and the second conductive layer are copper foil or aluminum foil.

[0014] Preferably, the pressure-sensitive material layer is a conductive material layer that deforms and changes resistance under pressure, and is bonded to the first conductive layer by a conductive adhesive.

[0015] Preferably, the pressure-sensitive material layer is a carbonized conductive polymer sheet or a piezoelectric material sheet.

[0016] Preferably, the second insulating layer is bonded to the second conductive layer by a non-conductive adhesive.

[0017] Preferably, a non-conductive adhesive is applied on a surface of the second insulating layer on the opposite side from the surface in contact with the second conductive layer.

[0018] Preferably, two ends of the second insulating layer are respectively formed with elongated openings, and the first conductive layer and the second conductive layer are respectively exposed from the corresponding elongated openings.

[0019] Preferably, the pressure-sensitive pad is formed in a sheet shape.

[0020] The pressure-sensitive pad for a cardiopulmonary resuscitation device according to the utility model is small in size and light in weight, and is convenient for accurately placing it at the optimal pressing position on the patient's chest, reducing the weight of the entire device, and has a simple structure, is easy to manufacture, has a low cost, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic stereogram of a pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to the utility model;

[0022] Figure 2 is a top view of a pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to the utility model;

[0023] Figure 3 It is a bottom view of the pressure-sensitive pad for the cardiopulmonary resuscitation apparatus according to the utility model;

[0024] Figure 4 is an exploded schematic diagram of a pressure-sensitive pad for a cardiopulmonary resuscitation device according to the utility model; and

[0025] Figure 5The electrical connection relationship between the pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to the utility model and the cardiopulmonary resuscitation apparatus is schematically shown. DETAILED DESCRIPTION

[0026] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the accompanying drawings are only used to illustrate the present invention and do not constitute a limitation to the present invention.

[0027] Figure 1 is a schematic stereogram of a pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to the utility model, Figure 2 is a top view of a pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to the utility model, Figure 3 is a bottom view of the pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to the utility model, and Figure 4 1 is a schematic diagram of an exploded view of a pressure-sensitive pad for a cardiopulmonary resuscitation device according to the utility model. Figure 1-4As shown, the pressure-sensitive pad 1 for a cardiopulmonary resuscitation apparatus according to the utility model includes a first insulating layer 3 made of an insulating material and used to contact the patient's body. In order to prevent the pressure-sensitive pad 1 from moving after being placed on the patient's body, a biocompatible adhesive can be applied to the bottom surface of the first insulating layer 3 in contact with the patient's body, so as to facilitate the attachment of the pressure-sensitive pad to the patient's body. The pressure-sensitive pad 1 for a cardiopulmonary resuscitation apparatus according to the utility model also includes a first conductive layer 5 arranged on the first insulating layer 3, and the first conductive layer 5 can be a conductive film such as copper foil or aluminum foil and is bonded to the top surface of the first insulating layer 3 by an adhesive such as a non-conductive adhesive. The pressure-sensitive pad 1 for a cardiopulmonary resuscitation apparatus according to the utility model also includes a pressure-sensitive material layer 7 arranged on the first conductive layer 5, and the pressure-sensitive material layer 7 is bonded to the top surface of the first conductive layer 5 by an adhesive such as a conductive adhesive. The pressure-sensitive material layer 7 can be a conductive material layer such as a carburized conductive polymer sheet or a piezoelectric material sheet that deforms after being compressed and causes a change in resistance. Therefore, when a constant voltage is applied to the circuit where the pressure-sensitive material layer 7 is located and pressure is applied to the pressure-sensitive material layer 7, the output current of the circuit will change. The pressure-sensitive pad 1 for a cardiopulmonary resuscitation device according to the utility model also includes a second conductive layer 9 arranged on the pressure-sensitive material layer 7. The second conductive layer 9 can be a conductive film such as copper foil or aluminum foil and is bonded to the top surface of the pressure-sensitive material layer 7 by an adhesive such as a conductive adhesive. The pressure-sensitive material layer 7 separates the first conductive layer 5 from the second conductive layer 9. The pressure-sensitive pad 1 for a cardiopulmonary resuscitation device according to the utility model also includes a second insulating layer 11 made of an insulating material and arranged on the second conductive layer 9. The second insulating layer 11 is bonded to the second conductive layer 9 by an adhesive such as a non-conductive adhesive. The second insulating layer 11 is used to contact the cardiopulmonary resuscitation device. Therefore, a non-conductive adhesive is applied to the surface of the second insulating layer 11 on the opposite side of the contact with the second conductive layer 9, so as to bond the pressure-sensitive pad 1 of the utility model to the bottom side of the cardiopulmonary resuscitation device. During the manufacturing process, the sizes of the first insulating layer 3 and the second insulating layer 11 are selected so that the first conductive layer 5, the pressure-sensitive material layer 7 and the second conductive layer 9 will not be exposed from the edges of the first insulating layer 3 and the second insulating layer 11 after the layers are bonded together.

[0028] The pressure-sensitive pad 1 of the utility model is formed as a thin sheet as a whole.

[0029] Figure 5 The electrical connection relationship between the pressure-sensitive pad for the cardiopulmonary resuscitation device and the cardiopulmonary resuscitation device according to the utility model is schematically shown. Figure 5 The pressure-sensitive pad 1 for a cardiopulmonary resuscitation device according to the present invention is not shown in proportion but in an exaggerated manner. Figure 5As shown, the pressure-sensitive pad 1 is arranged on the bottom side of the cardiopulmonary resuscitation instrument 13, and the first conductive layer 5 of the pressure-sensitive pad 1 can be electrically connected to a terminal of the cardiopulmonary resuscitation instrument 13, such as an input terminal, and the second conductive layer 9 of the pressure-sensitive pad 1 can be electrically connected to another terminal of the cardiopulmonary resuscitation instrument 13, such as an output terminal. In this way, the pressure-sensitive pad 1 and the cardiopulmonary resuscitation instrument 13 form an electrical circuit. Of course, the cardiopulmonary resuscitation instrument 13 is also electrically connected to the defibrillator 15, and the defibrillator 15 can act on the patient's heart with a pulse current to implement electric shock therapy, eliminate arrhythmia, and restore the heart to sinus rhythm. When the pressure-sensitive pad 1 and the cardiopulmonary resuscitation instrument 13 are placed on the patient's body for cardiopulmonary resuscitation compression, the pressure-sensitive material layer 7 in the pressure-sensitive pad 1 is deformed under the action of pressure, resulting in a change in the resistance in the electrical circuit formed by the pressure-sensitive pad 1 and the cardiopulmonary resuscitation instrument 13, and then causing a change in the current in the electrical circuit. According to the change in current, the pressure and frequency of chest compression during cardiopulmonary resuscitation can be correspondingly determined, and thus timely adjustments can be made.

[0030] Although the first conductive layer 5 and the second conductive layer 9 of the pressure-sensitive pad 1 can be electrically connected to the input terminal and the output terminal of the cardiopulmonary resuscitation device 13 respectively through wires, in order to realize the quick and convenient electrical connection of the first conductive layer 5 and the second conductive layer 9 to the input terminal and the output terminal of the cardiopulmonary resuscitation device 13, elongated openings 17 are formed at both ends of the second insulating layer 11 of the pressure-sensitive pad 1 respectively, and the sizes of the first conductive layer 5, the pressure-sensitive material layer 7 and the second conductive layer 9 are selected so that in the finally formed pressure-sensitive pad 1, not only the pressure-sensitive material layer 7 separates the first conductive layer 5 from the second conductive layer 9, but also the first conductive layer 5 is exposed from the elongated opening 17 at one end of the second insulating layer 11 and the second conductive layer 9 is exposed from the elongated opening 17 at the other end of the second insulating layer 11, thereby forming electrical contact with the input terminal and the output terminal of the cardiopulmonary resuscitation device 13. In order to facilitate the exposure of the first conductive layer 5 from the elongated opening 17 at one end of the second insulating layer 11 and the exposure of the second conductive layer 9 from the elongated opening 17 at the other end of the second insulating layer 11, the first conductive layer 5 can be bent at the corresponding end to form a first bent portion 5a, and the second conductive layer 9 can be bent at the corresponding other end to form a second bent portion 9a, so as to match the corresponding elongated opening 17 on the second insulating layer 11. In this way, when the pressure-sensitive pad 1 is bonded to the bottom side of the cardiopulmonary resuscitation device through a non-conductive adhesive, the first bent portion 5a of the first conductive layer 5 and the second bent portion 9a of the second conductive layer 9 exposed through the corresponding elongated opening 17 on the second insulating layer 11 respectively form electrical contact with the input terminal and the output terminal of the cardiopulmonary resuscitation device 13 quickly and conveniently, thereby forming a complete electrical circuit.

[0031] The pressure-sensitive pad for a cardiopulmonary resuscitation device according to the utility model is small in size and light in weight, and is convenient for accurately placing it at the optimal pressing position on the patient's chest, reducing the weight of the entire device, and has a simple structure, is easy to manufacture, has a low cost, and is convenient to use.

[0032] Although the present invention has been described in detail in conjunction with the preferred embodiments of the present invention, it should be understood that such detailed description is only used to explain the present invention and does not constitute a limitation on the present invention. The scope of the present invention is determined by the technical solutions defined in the claims.

Claims

1. A pressure-sensitive pad for a cardiopulmonary resuscitation device, characterized in that: The pressure sensitive pad comprises: A first insulating layer (3) in contact with the patient's body; A first conductive layer (5) disposed on the first insulating layer (3); a pressure-sensitive material layer (7) disposed on the first conductive layer (5); a second conductive layer (9) disposed on the pressure-sensitive material layer (7), wherein the pressure-sensitive material layer (7) separates the first conductive layer (5) from the second conductive layer (9); and A second insulating layer (11) is arranged on the second conductive layer (9) and is used for contacting the cardiopulmonary resuscitation device.

2. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 1, characterized in that: A biocompatible adhesive is applied on the surface of the first insulating layer (3) in contact with the patient's body.

3. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 1, characterized in that: The first conductive layer (5) is a conductive film and is bonded to the first insulating layer (3) via a non-conductive adhesive, and the second conductive layer (9) is a conductive film and is bonded to the pressure-sensitive material layer (7) via a conductive adhesive.

4. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 3, characterized in that: The first conductive layer (5) and the second conductive layer (9) are copper foil or aluminum foil.

5. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 1, characterized in that: The pressure-sensitive material layer (7) is a conductive material layer that deforms and changes its resistance when subjected to pressure, and is bonded to the first conductive layer (5) via a conductive adhesive.

6. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 5, characterized in that: The pressure-sensitive material layer (7) is a carbonized conductive polymer sheet or a piezoelectric material sheet.

7. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 1, characterized in that: The second insulating layer (11) is bonded to the second conductive layer (9) by a non-conductive adhesive.

8. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 1, characterized in that: A non-conductive adhesive is applied to the surface of the second insulating layer (11) on the opposite side of the surface where the second conductive layer (9) contacts.

9. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 1, characterized in that: Both ends of the second insulating layer (11) are respectively formed with elongated openings (17), and the first conductive layer (5) and the second conductive layer (9) are respectively exposed from the corresponding elongated openings (17).

10. The pressure-sensitive pad for a cardiopulmonary resuscitation apparatus according to claim 1, characterized in that: The pressure sensitive pad is formed in a sheet shape.

Images