Delayed chest closing dilator

Abstract

The invention discloses a chest closing delay dilator which comprises a first driving component, a second driving component and a control component. One distraction mechanism is fixed to the first driving component, the other distraction mechanism is detachably connected to the free end of the first driving component through a connector, and the first driving component is used for adjusting the distance between the two distraction mechanisms; the opening mechanism comprises a second driving component and two clamping mechanisms, one clamping mechanism is fixed to the second driving component, the other clamping mechanism is fixed to the free end of the second driving component, the second driving component is used for adjusting the distance between the two clamping mechanisms, each clamping mechanism comprises a fixing plate and a clamping plate, and the fixing plates are used for fixing the clamping mechanisms. The clamping plate is slidably connected to the fixing plate. Therefore, personalized treatment requirements of different patients can be met, extra medical cost generated due to adaptation to different patients is remarkably reduced, the workload of medical staff is greatly relieved, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a delayed chest closure retractor. Background Art

[0002] Delayed chest closure is an important strategy for dealing with critical complications after cardiac surgery. By temporarily opening the sternal incision, time is gained for myocardial recovery, bleeding control, and circulatory stability. Therefore, a support device is needed to hold the sternum open to actively maintain the sternal space, and then the chest is closed after the myocardial edema subsides or the bleeding improves.

[0003] However, in clinical practice, the currently used sternal retractors have the problem of a complex variety of specifications and models. Due to the differences in physiological structures of patients with different body weights, the specifications of the adapted sternal retractors are also different. This results in medical institutions not only needing to invest a large amount of funds to purchase various specifications and models of sternal retractors to meet the treatment needs of different patients, increasing medical costs; moreover, during the operation, medical staff also need to select the appropriate retractor specifications according to the specific situation of each patient, bringing an additional workload to the medical staff and affecting the overall work efficiency. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0005] For this purpose, an object of the present invention is to provide a delayed chest closure retractor that can meet the personalized treatment needs of different patients, not only significantly reducing the additional medical costs caused by adapting to different patients, but also greatly reducing the workload of medical staff and improving work efficiency.

[0006] To achieve the above object, the present invention provides a delayed chest closure retractor, including: a first driving component; two retracting mechanisms, one of the retracting mechanisms is fixed on the first driving component, and the other retracting mechanism is detachably connected to the free end of the first driving component through a connector, and the first driving component is used to adjust the distance between the two retracting mechanisms; the retracting mechanism includes a second driving component and two clamping mechanisms, wherein one of the clamping mechanisms is fixed on the second driving component, and the other clamping mechanism is fixed on the free end of the second driving component, and the second driving component is used to adjust the distance between the two clamping mechanisms, wherein the clamping mechanism includes a fixing plate and a clamping plate, the clamping plate is slidably connected to the fixing plate, and an opening is formed between the clamping plate and the fixing plate, and the clamping plate can move longitudinally relative to the fixing plate to change the size of the opening.

[0007] The delayed chest closure retractor of the present invention can control the first driving component to drive the two retracting mechanisms to generate relative displacement, thereby flexibly adjusting the distance between the two. It can adapt to the corresponding retracting size according to the differences in the chest lengths presented by different patients after thoracotomy. It can also control the second driving component to change the distance between the two clamping mechanisms, so as to match the chest sizes of different widths. After the two clamping mechanisms are adjusted to the appropriate distance, the clamping mechanisms are clamped on the patient's sternum. At this time, medical staff can further adjust the size of the opening between the splint and the fixing plate. Through this operation, the clamping requirements of different thickness sterna can be accurately adapted, and finally the optimal chest retracting opening size can be achieved. Thus, it can meet the personalized treatment needs of different patients, not only significantly reducing the additional medical costs caused by adapting to different patients, but also greatly reducing the work burden of medical staff and improving work efficiency.

[0008] In addition, the delayed chest closure retractor proposed according to the above application may also have the following additional technical features:

[0009] Specifically, both the fixing plate and the splint are in an L shape. A through groove is provided on the first surface of the fixing plate parallel to the ground. The splint is slidably connected to the second surface of the fixing plate perpendicular to the ground, and one end of the splint passes through the through groove. An opening is formed between the third surface of the splint parallel to the ground and the first surface.

[0010] Specifically, the clamping mechanism further includes a bolt, the bolt is threadedly connected to the fixing plate, and one end of the bolt can abut against the splint.

[0011] Specifically, through holes are provided on both the fixing plate and the splint, and the through holes on the fixing plate are arranged corresponding to the through holes on the splint.

[0012] Specifically, the first driving component and the second driving component are electric telescopic rods.

[0013] Specifically, the first driving component and the second driving component each include a sleeve, a screw rod, and a first nut. Among them, the screw rod is slidably connected in the sleeve; the first nut is rotatably connected to the sleeve, and the first nut is threadedly connected to the screw rod, and the rotation of the first nut is used to drive the screw rod to move relative to the sleeve.

[0014] Specifically, the connecting head is a second nut, and a threaded portion is provided on the free end of the first driving component, and the connecting head is threadedly connected to the threaded portion.

[0015] Specifically, it further includes an extension rod. One end of the extension rod can be threadedly connected to the threaded portion, and the other end of the extension rod is threadedly connected to the connecting head.

[0016] Specifically, it further includes a fixing component and a detection component. The detection component is fixed on the first driving component or the extension rod through the fixing component, and the fixing component can axially move along the first driving component or the extension rod. Wherein, the detection component includes a box body, a controller, a photoelectric sensor, an alarm and a miniature microphone. Wherein, the controller is arranged in the box body, the photoelectric sensor and the alarm are respectively embedded on the box body, and the photoelectric sensor faces the chest. The miniature microphone is detachably connected to the box body, and the photoelectric sensor, the miniature microphone and the alarm are respectively connected to the controller.

[0017] Specifically, the fixing component includes a left half and a right half. Wherein, the left half and the right half are respectively hinged to the box body, and the left half and the right half are spliced together through fasteners and wrapped on the first driving component or the extension rod. Description of the Drawings

[0018] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a delayed chest closure retractor according to an embodiment of the present invention;

[0021] Figure 2 It is a schematic structural diagram of a delayed chest closure retractor with an extension rod added according to an embodiment of the present invention;

[0022] Figure 3 For an embodiment of the present invention Figure 2 An enlarged structural diagram of area A therein.

[0023] As shown in the figure:

[0024] 1. First driving component; 10. Sleeve; 11. Screw; 12. First nut;

[0025] 2. Expanding mechanism; 20. Second driving component; 21. Clamping mechanism; 22. Through hole; 210. Fixed plate; 211. Clamping plate; 212. Opening; 213. Bolt; 2100. Through groove; 2101. First surface; 2102. Second surface; 2111. Third surface;

[0026] 3. Connector;

[0027] 4. Extension rod;

[0028] 5. Fixing component; 50. Right half; 51. Left half; 52. Fastener;

[0029] 6. Detection component; 60. Box body; 61. Photoelectric sensor; 62. Miniature microphone; 63. Alarm. Detailed implementation manners

[0030] In order to more clearly understand the above objects, features and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] The delayed chest closure retractor according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0033] The delayed chest closure retractor provided by the embodiment of the present invention can be applied to cardiac surgery, used for expanding the sternum and delaying the closure of the chest.

[0034] As Figure 1 shown, the delayed chest closure retractor according to the embodiment of the present invention may include a first driving component 1 and two expanding mechanisms 2.

[0035] Wherein, one expanding mechanism 2 is fixed on the first driving component 1, and the other expanding mechanism 2 is detachably connected to the free end of the first driving component 1 through a connector 3. The first driving component 1 is used to adjust the distance between the two expanding mechanisms 2, so as to change the relative distance between the two expanding mechanisms 2, adapt to the chest size differences presented after open chest surgeries of different lengths, and thus can be applicable to patient groups of different weights, fully meeting the diverse clinical needs.

[0036] Specifically, the connector 3 is a second nut, and a threaded portion is provided on the free end of the first driving component 1. The connector 3 is threadedly connected to the threaded portion, so that the expanding mechanism 2 can be detachably connected to the free end of the first driving component 1 through the connector 3.

[0037] The spreading mechanism 2 may include a second driving member 20 and two clamping mechanisms 21. One clamping mechanism 21 is fixed on the second driving member 20, and the other clamping mechanism 21 is fixed on the free end of the second driving member 20. The second driving member 20 is used to adjust the distance between the two clamping mechanisms 21 to adjust the relative distance between the two clamping mechanisms 21, adapting to the chest size differences presented after thoracotomy with different widths, so that it can be applicable to patient groups with different weights and fully meet diverse clinical needs.

[0038] Among them, the clamping mechanism 21 includes a fixing plate 210 and a clamping plate 211. The clamping plate 211 is slidably connected to the fixing plate 210. An opening 212 is formed between the clamping plate 211 and the fixing plate 210. The clamping plate 211 can longitudinally move relative to the fixing plate 210 to change the size of the opening 212, so as to be able to clamp onto sternums of different thicknesses.

[0039] Specifically, in actual clinical operations, medical staff can control the first driving member 1 to drive the two spreading mechanisms 2 to have relative displacements, and then flexibly adjust the distance between them. According to the chest length differences presented after thoracotomy of different patients, the corresponding spreading sizes can be adapted to ensure that the spreading effect meets individual needs.

[0040] Meanwhile, medical staff can also further optimize the adaptability of this spreader by controlling the second driving member 20. When the second driving member 20 operates, it can change the distance between the two clamping mechanisms 21. The problem of spreading difficulties caused by different chest widths after thoracotomy of patients is solved, so that chest sizes of different widths can be matched.

[0041] After the two clamping mechanisms 21 are adjusted to appropriate distances, the clamping mechanisms 21 are clamped onto the patient's sternum. At this time, medical staff can further adjust the size of the opening between the clamping plate 211 and the fixing plate 210. Through this operation, the clamping requirements for sternums of different thicknesses can be accurately adapted, and finally the best chest spreading opening size can be achieved.

[0042] Therefore, the delayed chest closure spreader of the present invention can meet the personalized treatment needs of different patients, not only significantly reducing the additional medical costs caused by adapting to different patients, but also greatly reducing the work burden of medical staff and improving work efficiency.

[0043] Furthermore, as Figure 1As shown, both the fixing plate 210 and the clamping plate 211 are L-shaped. A through groove 2100 is formed on the first surface 2101 of the fixing plate 210 parallel to the ground. The clamping plate 211 is slidably connected to the second surface 2102 of the fixing plate 210 perpendicular to the ground, and one end of the clamping plate 211 passes through the through groove 2100. An opening 212 is formed between the third surface 2111 of the clamping plate 211 parallel to the ground and the first surface 2101.

[0044] Specifically, relevant medical staff can adjust the size of the opening 212 between the clamping plate 211 and the fixing plate 210 by pulling the clamping plate 211 to change the distance relative to the fixing plate 210. Among them, the clamping plate 211 can be slidably connected to the fixing plate 210 through a chute and a slider, that is, the chute can be formed on the second surface 2102, one end of the slider is slidably connected to the chute, and the other end of the slider can be connected to the fixing plate 210, so as to realize the sliding connection of the clamping plate 211 to the fixing plate 210.

[0045] Furthermore, as Figure 1 shown, the clamping mechanism 21 further includes a bolt 213, and the bolt 213 is threadedly connected to the fixing plate 210, and one end of the bolt 213 can abut against the clamping plate 211.

[0046] In the above solution, relevant personnel can move relative to the clamping plate 211 by rotating the bolt 213. After the size of the opening 212 is adjusted, the bolt 213 can be rotated to abut against the clamping plate 211 to stably adjust the height of the clamping plate 211 and ensure the size of the opening 212.

[0047] In an embodiment of the present invention, as Figure 1 shown, through holes 22 are formed on both the fixing plate 210 and the clamping plate 211, and the through holes 22 on the fixing plate 210 and the through holes 22 on the clamping plate 211 are arranged corresponding to each other.

[0048] In the above solution, by passing a suture through the through holes 22, the clamping mechanism 21 can be fixed on the sternum, thereby ensuring the stability of the clamping mechanism 21 fixed on the sternum.

[0049] In an embodiment of the present invention, as Figure 1 shown, the first driving member 1 and the second driving member 20 are electric telescopic rods, and the second driving member 20 can be directly driven to move by directly controlling the first driving member 1 and the second driving member 20, with simple and convenient operation.

[0050] In another embodiment of the present invention, as Figure 1 and Figure 2 shown, both the first driving member 1 and the second driving member 20 include a sleeve 10, a screw rod 11 and a first nut 12.

[0051] Among them, the screw rod 11 is slidably connected in the sleeve 10. The first nut 12 is rotatably connected to the sleeve 10, and the first nut 12 is threadedly connected to the screw rod 11. The rotation of the first nut 12 is used to drive the screw rod 11 to move relative to the sleeve 10.

[0052] Specifically, by rotating the first nut 12, the first nut 12 can drive the screw rod 11 to move relative to the sleeve 10, thereby adjusting the telescopic length of the screw rod 11. The structure is simple. Compared with the solution of using an electric telescopic rod as the first driving component 1 and the second driving component 20, this manual adjustment structure has significant advantages in cost control, greatly reducing the production and maintenance costs. At the same time, it is also more stable and reliable.

[0053] Furthermore, to ensure the stability of the screw rod 11 during movement, a sliding connection method of matching a slider with a sliding groove is adopted between the screw rod 11 and the sleeve 10. Specifically, a slider is fixedly arranged on the screw rod 11, and a sliding groove adapted thereto is correspondingly formed on the inner wall of the sleeve 10. When the screw rod 11 moves under the drive of the first nut 12, the slider will slide smoothly along the sliding groove. It provides a reliable limiting effect on the screw rod 11, effectively avoiding unnecessary rotation of the screw rod 11 during movement, thereby ensuring the linearity and accuracy of the telescopic movement of the screw rod 11.

[0054] In an embodiment of the present invention, as Figure 2 shown, it further includes an extension rod 4. One end of the extension rod 4 can be threadedly connected to the threaded portion, and the other end of the extension rod 4 is threadedly connected to the connecting head 3. Specifically, a groove is formed at one end of the extension rod 4 where it is threadedly connected to the threaded portion, and the inner wall of the groove forms a thread matching the threaded portion, thereby realizing the connection between the extension rod 4 and the first driving component 1.

[0055] In the above solution, the precision adjustment is realized by setting the first driving component 1 to meet the refined adaptation to the chest sizes of different patients. By setting the extension rod 4, it can play a role in lengthening, thereby further expanding the applicable range to cover the needs of patients with extreme body types. Among them, there can be multiple extension rods 4. By increasing or decreasing the number of extension rods 4, "step-by-step" length adaptation can be realized (for example, 1 extension rod 4 in the standard configuration, and 2 additional extension rods 4 for special cases), avoiding the cost and time loss brought by customized production.

[0056] In addition, the extension rod 4 is threadedly connected to the connecting head 3, which can realize quick disassembly and installation.

[0057] In an embodiment of the present invention, as Figure 2 and Figure 3As shown in the figure, the delayed chest closure retractor of the present invention further includes a fixing component 5 and a detection component 6. The detection component 6 is fixed on the first driving component 1 or the extension rod 4 through the fixing component 5, and the fixing component 5 can move axially along the first driving component 1 or the extension rod 4, so as to change the position of the fixing component 5, that is, change the detection position of the detection component 6. Furthermore, according to the size of different chest sizes, it can be adjusted to the optimal detection position to improve the accuracy of the detection by the detection component 6. For example, the photoelectric sensor 61 needs to be directly facing the key area of the chest cavity (such as the projection area of the heart or large blood vessels), and the optimal monitoring position can be ensured through movement adjustment.

[0058] Among them, the detection component 6 includes a box body 60, a controller (not shown in the figure), a photoelectric sensor 61, an alarm 63 and a miniature microphone 62. Among them, the controller is arranged in the box body 60, the photoelectric sensor 61 and the alarm 63 are respectively embedded on the box body 60, and the photoelectric sensor 61 faces the chest. The miniature microphone 62 is detachably connected to the box body 60, and the photoelectric sensor 61, the miniature microphone 62 and the alarm 63 are respectively connected to the controller.

[0059] Among them, the photoelectric sensor 61 is used for non-invasive detection of blood oxygen saturation. By emitting light of specific wavelengths (usually red light and infrared light) and detecting the change in light intensity after penetration or reflection, the absorption characteristics of oxyhemoglobin and deoxyhemoglobin for different wavelengths of light are used to calculate blood oxygen saturation. Specifically, in open-chest surgery, the opening of the chest cavity may cause compression of lung tissue, complication of airway management, or interference with blood circulation during heart operation, which is likely to cause hypoxemia. Through continuous blood oxygen monitoring, insufficient oxygenation can be immediately detected, guiding relevant medical staff to adjust the parameters of the ventilator (such as the inhaled oxygen concentration) or optimize the position of the sternal retractor to avoid hypoxia damage to important organs (such as the brain, heart).

[0060] The miniature microphone 62 is used to collect sound signals in the chest cavity (such as heart sounds, breath sounds or abnormal murmurs), and combined with the controller algorithm analysis, early signs of complications such as pneumothorax and cardiac tamponade are identified. For example, asymmetric breath sounds may indicate atelectasis, and weakened heart sounds may indicate cardiac compression. Among them, the detachable miniature microphone 62 can, according to the actual situation, remove the miniature microphone 62 from the box body 60 and place it at a suitable collection position to improve the accuracy of collection. Specifically, a clip can be set on the box body 60 to clamp the miniature microphone 62, which is simple and convenient to operate, and the miniature microphone 62 is equipped with a clip for easy clamping on the hospital gown or other suitable positions.

[0061] The alarm 63 is directly integrated into the box 60. Once the controller detects abnormal data (such as blood oxygen below a threshold or abnormal audio characteristics), it immediately triggers an audible and visual alarm to shorten the response time of medical staff. The controller can integrate a preset algorithm (such as a machine learning model) to distinguish normal physiological signals from pathological noise and reduce false triggers caused by environmental interference. For example, it can filter the background noise in the operating room and focus on identifying key signals such as pericardial friction sounds.

[0062] In the above scheme, by setting up the detection component 6, a multi-dimensional detection function is provided, which can comprehensively monitor the patient's key blood oxygen status indicators such as blood oxygen saturation, blood oxygen fluctuation trend, and chest conditions such as chest rise and fall frequency and respiratory rhythm changes in real time.

[0063] With the detailed data collected by the detection component 6, medical staff can obtain more intuitive and accurate physiological information of patients, so as to make more scientific and efficient judgments on the development of the disease and issue effective early warning signals in time. This measure plays an important role in disease prevention and control, and can detect potential risks of the disease in advance and significantly reduce the possibility of acute onset of the disease.

[0064] Furthermore, if Figure 1 As shown, the fixing component 5 includes a left half 51 and a right half 50, wherein the left half 51 and the right half 50 are respectively hinged to the box body 60, and the left half 51 and the right half 50 are spliced together by fasteners 52 and wrapped on the first driving component 1 or the extension rod 4.

[0065] It should be clearly pointed out that the fastener 52 can be in the form of a combination of a bolt or a screw and a nut. Taking the combination of a bolt and a nut as an example, with this combination, the clamping force of the left half 51 and the right half 50 on the first driving component 1 or the extension rod 4 can be flexibly adjusted.

[0066] In specific operation, by adjusting the fastener 52, the degree of clamping between the left half 51 and the right half 50 can be precisely controlled. When the degree of clamping is at a low level, a certain gap will be generated between the contact surface of the left half 51 and the right half 50 and the first driving component 1 or the extension rod 4. The existence of this gap allows the fixing component 5 to have a relatively free movement space, and medical staff can easily move the fixing component 5 according to actual detection needs, thereby changing the installation position of the detection component 6, so that it can adapt to different patient body position requirements.

[0067] After the component 6 to be detected is moved to the ideal position and the preliminary debugging is completed, the fastener 52 is adjusted again. As the clamping force gradually increases, the left half 51 and the right half 50 will closely fit on the first driving component 1 or the extension rod 4, forming a stable connection, thereby firmly fixing the detection component 6 at the target position and ensuring its stability during subsequent detection.

[0068] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0069] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments described herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A delayed chest closure retractor, characterized in that, include: a first drive component; Two spreading mechanisms, one of which is fixed to the first driving component, and the other of which is detachably connected to the free end of the first driving component via a connector, the first driving component being used to adjust the distance between the two spreading mechanisms; The spreading mechanism comprises a second driving component and two clamping mechanisms, wherein one of the clamping mechanisms is fixed on the second driving component, and the other clamping mechanism is fixed on the free end of the second driving component, and the second driving component is used to adjust the distance between the two clamping mechanisms, wherein: The clamping mechanism includes a fixing plate and a clamping plate, wherein the clamping plate is slidably connected to the fixing plate, an opening is formed between the clamping plate and the fixing plate, and the clamping plate can move longitudinally relative to the fixing plate to change the size of the opening.

2. The delayed chest closure retractor according to claim 1, wherein, The fixing plate and the clamping plate are both L-shaped, a through groove is provided on the first surface of the fixing plate parallel to the ground, the clamping plate is slidably connected to the second surface of the fixing plate perpendicular to the ground, and the through groove is passed through one end of the clamping plate, and the opening is formed between the third surface of the clamping plate parallel to the ground and the first surface.

3. The delayed chest closure retractor according to claim 2, characterized in that, The clamping mechanism further comprises a bolt, which is threadedly connected to the fixing plate, and one end of the bolt can abut against the clamping plate.

4. The delayed chest closure retractor according to claim 3, wherein, The fixing plate and the clamping plate are both provided with through holes, and the through holes on the fixing plate are arranged correspondingly to the through holes on the clamping plate.

5. The delayed chest closure retractor according to claim 1, wherein, The first driving component and the second driving component are electric telescopic rods.

6. The delayed chest closure retractor according to claim 1, characterized in that, The first driving component and the second driving component each include a sleeve, a screw and a first nut, wherein: The screw is slidably connected in the sleeve; The first nut is rotatably connected to the sleeve, and the first nut is threadably connected to the screw rod. The first nut is rotated to drive the screw rod to move relative to the sleeve.

7. The delayed chest closure spreader according to claim 5 or 6, characterized in that, The connecting head is a second nut, a threaded portion is provided on the free end of the first driving component, and the connecting head is threadedly connected to the threaded portion.

8. The delayed chest closure retractor according to claim 7, characterized in that, It also includes an extension rod, one end of which can be threadedly connected to the threaded portion, and the other end of the extension rod is threadedly connected to the connecting head.

9. The delayed chest closure retractor according to claim 8, characterized in that, It also includes a fixing component and a detection component, wherein the detection component is fixed to the first driving component or the extension rod through the fixing component, and the fixing component can move axially along the first driving component or the extension rod, wherein the detection component includes a box, a controller, a photoelectric sensor, an alarm and a miniature microphone, wherein: The controller is arranged in the box, the photoelectric sensor and the alarm are respectively embedded in the box, and the photoelectric sensor faces the chest, the miniature microphone is detachably connected to the box, and the photoelectric sensor, the miniature microphone and the alarm are respectively connected to the controller.

10. The delayed chest closure retractor according to claim 9, wherein, The fixed component includes a left half and a right half. Among them, the left half and the right half are respectively hinged to the box body, and the left half and the right half are spliced together by fasteners and are wrapped on the first driving component or the extension rod.

Images