Closed nursing drainage device for cardiothoracic surgery department

Abstract

The utility model discloses a closed nursing drainage device for cardiothoracic surgery, which belongs to the technical field of thoracic closed drainage and comprises a bearing component, the bearing component comprises a supporting plate, and supporting columns are fixedly connected to positions, close to four corners, of the bottom of the supporting plate; through the arrangement of the air heating assembly, when a patient is drained, an air inlet fan and an electric heating wire are started, the air inlet fan works to pump outside air into an inner cavity of an air heating barrel after the outside air is filtered through a dust filtering net, the air can be heated through the work of the electric heating wire, and heated warm air is blown to the patient from an air outlet; by arranging a servo motor, a transmission gear, a driven gear, a transmission rod, a transmission groove wheel, a driven groove wheel, a belt and a rotating shaft, the blowing direction can be adjusted, meanwhile, vertical deflection of an air heating barrel can be achieved, the blowing range is enlarged, electric energy waste is avoided, and meanwhile the patient is protected against cold. And the warm-keeping effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of closed chest drainage, in particular to a closed nursing drainage device for cardiothoracic surgery. Background Art

[0002] Closed chest drainage is to place one end of the drainage tube into the chest cavity, and connect the other end to a water-sealed bottle at a lower position, so as to discharge gas or collect fluid in the chest cavity, so that the lung tissue can reopen and restore function. As a treatment method, it is widely used in the drainage of hemothorax, pneumothorax, empyema and after thoracotomy, and plays a very important role in the treatment of diseases. In the hospital, closed chest drainage is needed to drain patients with adverse effusions in the body, which will use related drainage devices.

[0003] At present, the patent with patent publication number CN202020579019.7 discloses a closed nursing drainage device for cardiothoracic surgery, which is equipped with a heater, an air intake fan and a heating wire. The air intake fans and heating wires in the two sets of heaters work to continuously deliver hot air to the patient's body, solving the problem that part of the patient's body will be directly exposed to the outside during drainage, and thus it will be easy to catch cold.

[0004] Regarding the description of the above patent, the applicant believes that although it solves the corresponding technical problems, the technical solution still has deficiencies in other aspects, as follows:

[0005] Although the above patent can blow warm air around the patient's body during drainage through the arrangement of a heater, an air intake fan and a heating wire, during use, due to the limitation of the patient's size and position, the warm air blown by the heater cannot be blown to the patient's body at a close distance, which not only causes a waste of electric energy, but also fails to prevent the patient from catching cold. For this reason, we propose a closed nursing drainage device for cardiothoracic surgery to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0007] Therefore, the purpose of the utility model is to provide a closed nursing drainage device for cardiothoracic surgery, which can solve the problem that the existing warm air blowing direction is fixed, which easily causes waste of electric energy and poor warming effect.

[0008] In order to solve the above technical problems, the utility model provides a closed nursing drainage device for cardiothoracic surgery, which adopts the following technical solutions: including:

[0009] The bearing assembly includes a support plate, and the bottom of the support plate is fixedly connected to support columns near the four corners, the bottom ends of the four support columns are rotatably connected to rollers, the top middle position of the support plate is fixedly connected to a box body, and the left and right sides of the box body are provided with air heating components;

[0010] A liquid collecting component, comprising a horizontal plate, and the horizontal plate is fixedly connected to the inner cavity of the box body near the bottom, the top of the horizontal plate near the left and right sides are fixedly connected with a positioning ring, and the inner cavity of the positioning ring is provided with a sensing plate, the bottoms of the two sensing plates are fixedly connected to the top of the horizontal plate, the tops of the two sensing plates are fitted with a liquid collecting bottle, the bottom of the horizontal plate near the left and right sides are fixedly installed with a pressure sensor, and the pressure sensor is electrically connected to the adjacent sensing plate, and a controller is fixedly installed at the middle position of the bottom of the horizontal plate;

[0011] The liquid guide assembly includes a transfer tube, and the transfer tube is located in the middle of the top of the box body, the top of the transfer tube is fixedly connected to the drainage tube, and the bottom of the transfer tube is fixedly connected to a three-way joint, the left and right sides of the three-way joint are fixedly connected to connecting tubes, and the other end of the connecting tube passes through the top of the box body and extends to the inner cavity of the box body, and solenoid valves are provided on the two connecting tubes.

[0012] By adopting the above technical solution, this solution solves the problem of increased work intensity caused by the need for medical staff to observe the liquid collection bottle in real time through the intelligent setting of the liquid collection component and the liquid guide component.

[0013] Optionally, an armrest is fixedly connected to the rear side of the support plate, and an anti-slip sleeve is sleeved and fixed to the outer side wall of the armrest.

[0014] By adopting the above technical solution, this solution facilitates the control of the moving direction of the device through the provision of handrails and anti-slip sleeves.

[0015] Optionally, the front hinge of the box body is connected to a box door, and a handle is fixedly connected to the front side of the box door near the right side.

[0016] By adopting the above technical solution, this solution can seal the inner cavity of the box through the setting of the box door, thereby improving the dust-proof effect.

[0017] Optionally, a visual observation window is provided on the box door near the left side.

[0018] By adopting the above technical solution, the present solution facilitates observation of the working condition of the inner cavity of the box by setting a visual observation window.

[0019] Optionally, the inner side wall of the positioning ring and the outer side wall of the liquid collecting bottle are in contact with each other, and one end of the connecting tube extending into the inner cavity of the box is located directly above an adjacent liquid collecting bottle.

[0020] By adopting the above technical solution, this solution facilitates accurate placement of the liquid collecting bottle directly below the connecting pipe through the provision of a positioning ring.

[0021] Optionally, the air heating assembly includes an air heating cylinder, and the air heating cylinder is located on one side of the box, the air heating cylinder is fixedly connected to a rotating shaft on the side close to the box, and the other end of the rotating shaft is rotatably connected to the outer wall of the box, an air outlet is opened on the front side of the air heating cylinder, and the inner cavity of the air outlet is fixedly connected to an isolation net, the inner cavity of the air heating cylinder is fixedly installed with an air intake fan and an electric heating wire, and the electric heating wire is located on the front side of the air intake fan, and an air inlet is opened on the rear side of the air heating cylinder.

[0022] By adopting the above technical solution, this solution prevents the patient from getting cold during the drainage process by setting up an air heating component.

[0023] Optionally, an annular plate is fitted on the rear side of the air inlet, and a dust filter is fixedly connected to the inner cavity of the annular plate, the front side of the annular plate is fixedly connected to positioning blocks near the top and bottom, the rear side of the air heater tube is provided with positioning grooves matching the positioning blocks near the top and bottom, and the two positioning blocks are respectively inserted into adjacent positioning groove inner cavities, and the rear side of the annular plate is fitted with limit plates near the top and bottom, the top and bottom of the air heater tube are fixedly connected to a fixing plate near the rear side, and the fixing plate is provided with through holes, T-shaped rods are passed through the two perforated inner cavities, and the rear ends of the T-shaped rods are fixedly connected to the adjacent limit plates, and springs are sleeved on the outer sides of the two T-shaped rods, and the two ends of the springs are respectively fixedly connected to the fixing plate and the T-shaped rod.

[0024] By adopting the above technical solution, this solution facilitates limiting the annular plate through the provision of a limiting plate, a T-shaped rod and a spring, thereby improving the convenience of disassembling and assembling the annular plate.

[0025] Optionally, bearings are fixedly connected to the left and right sides of the box body near the bottom, and a transmission rod is commonly provided through the inner cavities of the two bearings, and transmission groove wheels are fixedly connected to the left and right ends of the transmission rod, and driven groove wheels are sleeved and fixed on the outer sides of the two rotating shafts, and belts are respectively provided between the two driven groove wheels and adjacent transmission groove wheels, and the two transmission groove wheels are respectively connected to adjacent driven groove wheels through adjacent belts. A servo motor is fixedly installed on the left side of the inner cavity of the box body near the bottom, and a transmission gear is fixedly connected to the power output end of the servo motor, a driven gear is meshed with the bottom of the transmission gear, and the driven gear is sleeved and fixed on the outer wall of the transmission rod.

[0026] By adopting the above technical solution, the present solution can adjust the blowing direction through the operation of the servo motor and at the same time, increase the blowing range, thereby achieving a better warming effect.

[0027] In summary, the present invention has at least one of the following beneficial effects:

[0028] 1. Through the setting of the air heating component, the air intake fan and the electric heating wire can be started when the patient is drained. The air intake fan works to filter the outside air through the dust filter and then pump it into the inner cavity of the air heating cylinder. The air can be heated by the work of the electric heating wire, and the heated warm air is blown to the patient from the air outlet, thereby preventing the patient from catching a cold during the drainage process. Through the setting between the servo motor, the transmission gear, the driven gear, the transmission rod, the transmission groove wheel, the driven groove wheel, the belt and the rotating shaft, the blowing direction can be adjusted, and at the same time, the up and down deflection of the air heating cylinder can be realized to increase the blowing range, thereby avoiding the waste of electric energy and improving the warming effect.

[0029] 2. Through the setting of the liquid collecting component and the liquid guiding component, the two liquid collecting bottles can be placed into the inner cavity of the two positioning rings, and the liquid collecting bottles can be fitted with the sensing plate. Then, when the accumulated fluid flows from the drainage tube into the inner cavity of the transfer tube, the solenoid valve on one side can be opened first, and the accumulated fluid can flow from the connecting tube into the liquid collecting bottle. As the weight of the liquid collecting bottle increases, when the set value is reached, the sensing plate transmits a signal to the pressure sensor, and the pressure sensor transmits a signal to the controller, and the controller closes the currently opened solenoid valve while opening the solenoid valve on the other side. As a result, the accumulated fluid can be guided into the liquid collecting bottle on the other side, and then, it is convenient for the staff to open the box door and take out the liquid collecting bottle filled with accumulated fluid for cleaning, so that the drainage device is more intelligent and the workload of medical staff is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a left-side structural schematic diagram of the support plate of the utility model;

[0033] Figure 3 This is a schematic diagram of the front view structure of the box body of the utility model;

[0034] Figure 4 It is a left-side structural schematic diagram of the wind heating tube of the present utility model.

[0035] Description of reference numerals:

[0036] 1. Carrying assembly; 101. Support plate; 102. Support column; 103. Roller; 104. Box; 105. Box door; 106. Handle; 107. Observation window; 108. Handrail; 109. Anti-slip cover; 2. Liquid collecting assembly; 201. Horizontal plate; 202. Positioning ring; 203. Induction plate; 204. Liquid collecting bottle; 205. Pressure sensor; 206. Controller; 3. Liquid guiding assembly; 301. Transfer tube; 302. Drainage tube; 303. Three-way connector; 304. Connecting tube; 3 05. Solenoid valve; 4. Air heating assembly; 401. Air heating cylinder; 402. Isolation net; 403. Heating wire; 404. Intake fan; 405. Ring plate; 406. Limit plate; 407. Dust filter; 408. T-bar; 409. Spring; 410. Rotating shaft; 411. Driven groove wheel; 412. Transmission groove wheel; 413. Belt; 414. Transmission rod; 415. Servo motor; 416. Transmission gear; 417. Driven gear; 4001. Air outlet; 4002. Air inlet. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-4 The utility model is described in further detail.

[0038] Embodiment 1, refer to Figure 1 , Figure 2 and Figure 3 In this embodiment, in order to solve the problem that the existing liquid collection bottle 204 needs medical staff to spend a lot of energy to observe in real time whether it needs to be replaced in time when collecting the effusion, the utility model discloses a closed nursing drainage device for cardiothoracic surgery, including:

[0039] The bearing assembly 1 includes a support plate 101, and the bottom of the support plate 101 is fixedly connected to support columns 102 near the four corners, and the bottom ends of the four support columns 102 are rotatably connected to rollers 103, and the top middle position of the support plate 101 is fixedly connected to a box 104, and the left and right sides of the box 104 are provided with air heating components 4, and the rear side of the support plate 101 is fixedly connected to an armrest 108, and the outer side wall of the armrest 108 is sleeved and fixed with an anti-slip sleeve 109, so as to facilitate the control of the travel direction of the device;

[0040] The liquid collecting component 2 includes a horizontal plate 201, and the horizontal plate 201 is fixedly connected to the inner cavity of the box body 104 near the bottom, the top of the horizontal plate 201 near the left and right sides are fixedly connected with a positioning ring 202, and the inner cavity of the positioning ring 202 is provided with a sensing plate 203, the bottoms of the two sensing plates 203 are fixedly connected to the top of the horizontal plate 201, the tops of the two sensing plates 203 are fitted with a liquid collecting bottle 204, the bottom of the horizontal plate 201 near the left and right sides are fixedly installed with a pressure sensor 205, and the pressure sensor 205 is electrically connected to the adjacent sensing plate 203, and a controller 206 is fixedly installed at the middle position of the bottom of the horizontal plate 201;

[0041] The liquid guide component 3 includes a transfer tube 301, and the transfer tube 301 is located in the middle of the top of the box body 104. The top of the transfer tube 301 is fixedly connected to the drainage tube 302, and the bottom of the transfer tube 301 is fixedly connected to a three-way joint 303. The left and right sides of the three-way joint 303 are fixedly connected to connecting tubes 304, and the other end of the connecting tube 304 passes through the top of the box body 104 and extends to the inner cavity of the box body 104. The inner wall of the positioning ring 202 and the outer wall of the liquid collecting bottle 204 fit each other, and one end of the connecting tube 304 extending into the inner cavity of the box body 104 is located directly above the adjacent liquid collecting bottle 204, so that the liquid collecting bottle 204 can be placed just below the connecting tube 304 to avoid leakage of accumulated liquid. Solenoid valves 305 are provided on both connecting tubes 304.

[0042] The front hinge of the box body 104 is connected to the box door 105, and the front side of the box door 105 is fixedly connected to a handle 106 near the right side to improve the sealing effect of the box body 104. A visual observation window 107 is provided on the box door 105 near the left side to facilitate observation of the internal situation of the box body 104.

[0043] The specific working principle is: first, the armrest 108 is pushed to drive the support plate 101 to move, so that it can be moved to the side of the bed by the rolling descending device of the plurality of rollers 103. Then, when the drainage device is working, the solenoid valve 305 on one side is opened by the controller 206, so that the connecting pipe 304 on one side is in an open state. Then, after the accumulated fluid is drained into the inner cavity of the transfer tube 301 through the drainage tube 302, the accumulated fluid can be introduced into the liquid collection bottle 204 directly below it through the opened connecting pipe 304. As the weight of the liquid collection bottle 204 increases, pressure is applied to the induction plate 20 3, and the induction plate 203 transmits information to the pressure sensor 205. When the applied pressure reaches the set value, that is, the accumulated liquid reaches the set liquid level in the liquid collecting bottle 204, the signal is transmitted to the controller 206, and the opened solenoid valve 305 is closed by the controller 206, and the solenoid valve 305 on the other side is opened at the same time, so that the subsequent accumulated liquid can be introduced into the liquid collecting bottle 204 on the other side, without interrupting the drainage operation, and avoiding leakage of the accumulated liquid. Then, the staff only needs to open the box door 105, take out the liquid collecting bottle 204 filled with accumulated liquid, and clean it.

[0044] Example 2, refer to Figure 1 and Figure 4 In order to solve the problem that patients are prone to catching cold during drainage in the present embodiment, based on the same concept as the above-mentioned embodiment 1, the closed nursing drainage device for cardiothoracic surgery further includes:

[0045] The air heating assembly 4 includes an air heating cylinder 401, and the air heating cylinder 401 is located on one side of the box body 104, a rotating shaft 410 is fixedly connected to the side of the air heating cylinder 401 close to the box body 104, and the other end of the rotating shaft 410 is rotatably connected to the outer wall of the box body 104, an air outlet 4001 is opened on the front side of the air heating cylinder 401, and the inner cavity of the air outlet 4001 is fixedly connected to an isolation net 402, an air intake fan 404 and an electric heating wire 403 are fixedly installed in the inner cavity of the air heating cylinder 401, and the electric heating wire 403 is located on the front side of the air intake fan 404, and an air inlet 4002 is opened on the rear side of the air heating cylinder 401.

[0046] Bearings are fixedly connected to the left and right sides of the box body 104 near the bottom, and a transmission rod 414 is commonly penetrated through the inner cavities of the two bearings. A transmission groove wheel 412 is fixedly connected to the left and right ends of the transmission rod 414. A driven groove wheel 411 is sleeved and fixed to the outer sides of the two rotating shafts 410. Belts 413 are respectively provided between the two driven groove wheels 411 and the adjacent transmission groove wheels 412, and the two transmission groove wheels 412 are respectively connected to the adjacent driven groove wheels 411 through adjacent belts 413. A servo motor 415 is fixedly installed on the left side of the inner cavity of the box body 104 near the bottom, and a transmission gear 416 is fixedly connected to the power output end of the servo motor 415. A driven gear 417 is meshed with the bottom of the transmission gear 416, and the driven gear 417 is sleeved and fixed on the outer wall of the transmission rod 414.

[0047] The specific working principle is: when the drainage starts, the air intake fan 404 and the electric heating wire 403 are started. The air intake fan 404 can filter the outside air through the dust filter 407 and then pump it into the inner cavity of the air intake warming tube 401. Then, the air can be heated by the heating wire 403. Then, it is blown to the patient through the air outlet 4001. By starting the servo motor 415, the transmission gear 416 can be driven to rotate. The rotation of the transmission gear 416 drives the driven gear 417 to rotate. The driven gear 417 The rotation drives the transmission rod 414 to rotate, and the rotation of the transmission rod 414 drives the two transmission groove wheels 412 to rotate. The rotation of the transmission groove wheel 412 drives the driven groove wheel 411 to rotate through the belt 413. The rotation of the driven groove wheel 411 drives the rotation of the rotating shaft 410. The rotation of the rotating shaft 410 can drive the air heating tube 401 to deflect up and down, so that the blowing direction can be adjusted. Keeping the servo motor 415 working continuously can drive the air heating tube 401 to swing back and forth up and down, which can increase the blowing range and thus improve the warming effect.

[0048] Example 3, refer to Figure 4 In order to solve the problem that it is inconvenient to clean the dust attached to the surface of the dust filter 407 in the present embodiment, based on the same concept as the above-mentioned embodiment 1, the closed nursing drainage device for cardiothoracic surgery further includes:

[0049] An annular plate 405 is fitted on the rear side of the air inlet 4002, and a dust filter 407 is fixedly connected to the inner cavity of the annular plate 405, positioning blocks are fixedly connected to the front side of the annular plate 405 near the top and bottom, positioning grooves matching the positioning blocks are provided near the top and bottom of the rear side of the air heating tube 401, and the two positioning blocks are respectively inserted into the inner cavities of adjacent positioning grooves, and limiting plates 406 are fitted on the rear side of the annular plate 405 near the top and bottom, and a fixing plate is fixedly connected to the top and bottom of the air heating tube 401 near the rear side, and a through hole is provided on the fixing plate, and T-shaped rods 408 are penetrated by the two through-hole inner cavities, and the rear ends of the T-shaped rods 408 are fixedly connected to the adjacent limiting plates 406, and springs 409 are sleeved on the outer sides of the two T-shaped rods 408, and the two ends of the spring 409 are respectively fixedly connected to the fixing plate and the T-shaped rod 408.

[0050] The specific working principle is: when the two T-shaped rods 408 are pushed to overcome the resistance of the adjacent springs 409 and move backward synchronously, the two limit plates 406 can be driven to move backward synchronously, so that the limit plates 406 are away from the annular plate 405. When the annular plate 405 is pulled away from the air heating tube 401, the two positioning blocks can be pulled out from the adjacent positioning groove cavities respectively, so that the annular plate 405 can be removed, which makes it convenient for the staff to clean the dust attached to the surface of the dust filter 407, which is beneficial to increase the air intake of the air heating tube 401.

[0051] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A closed nursing drainage device for cardiothoracic surgery, characterized in that: include, A bearing assembly (1), comprising a support plate (101), wherein the bottom of the support plate (101) is fixedly connected to support columns (102) near four corners, the bottom ends of the four support columns (102) are rotatably connected to rollers (103), a box (104) is fixedly connected to the middle position of the top of the support plate (101), and air heating assemblies (4) are provided on the left and right sides of the box (104); A liquid collecting component (2), comprising a transverse plate (201), wherein the transverse plate (201) is fixedly connected to the inner cavity of the box body (104) near the bottom, a positioning ring (202) is fixedly connected to the top of the transverse plate (201) near the left and right sides, and a sensing plate (203) is provided in the inner cavity of the positioning ring (202), the bottoms of the two sensing plates (203) are fixedly connected to the top of the transverse plate (201), the tops of the two sensing plates (203) are fitted with a liquid collecting bottle (204), pressure sensors (205) are fixedly installed at the bottom of the transverse plate (201) near the left and right sides, and the pressure sensors (205) are electrically connected to adjacent sensing plates (203), and a controller (206) is fixedly installed at the middle position of the bottom of the transverse plate (201); A liquid guide assembly (3) comprises a transfer tube (301), wherein the transfer tube (301) is located at the middle position of the top of the box body (104), the top end of the transfer tube (301) is fixedly connected to the drainage tube (302), and the bottom end of the transfer tube (301) is fixedly connected to a three-way joint (303), the left and right sides of the three-way joint (303) are fixedly connected to connecting tubes (304), and the other end of the connecting tube (304) passes through the top of the box body (104) and extends to the inner cavity of the box body (104), and the two connecting tubes (304) are both provided with solenoid valves (305).

2. A cardiothoracic surgery closed care drainage device according to claim 1, characterized in that: The rear side of the support plate (101) is fixedly connected to a handrail (108), and the outer side wall of the handrail (108) is sleeved and fixed with an anti-slip sleeve (109).

3. A cardiothoracic surgery closed care drainage device according to claim 1, characterized in that: The front hinge of the box body (104) is connected to a box door (105), and a handle (106) is fixedly connected to the front side of the box door (105) near the right side.

4. A cardiothoracic surgery closed care drainage device according to claim 3, characterized in that: A visual observation window (107) is provided on the box door (105) near the left side.

5. A cardiothoracic surgery closed care drainage device according to claim 1, characterized in that: The inner wall of the positioning ring (202) and the outer wall of the liquid collecting bottle (204) are in contact with each other, and one end of the connecting tube (304) extending into the inner cavity of the box body (104) is located directly above the adjacent liquid collecting bottle (204).

6. A cardiothoracic surgery closed care drainage device according to claim 1, characterized in that: The air heating component (4) comprises an air heating cylinder (401), and the air heating cylinder (401) is located on one side of the box (104); a rotating shaft (410) is fixedly connected to a side of the air heating cylinder (401) close to the box (104), and the other end of the rotating shaft (410) is rotatably connected to an outer wall of the box (104); an air outlet (4001) is provided on the front side of the air heating cylinder (401), and an isolation net (402) is fixedly connected to the inner cavity of the air outlet (4001); an air intake fan (404) and an electric heating wire (403) are fixedly installed in the inner cavity of the air heating cylinder (401), and the electric heating wire (403) is located on the front side of the air intake fan (404); and an air intake (4002) is provided on the rear side of the air heating cylinder (401).

7. A closed care drainage device for cardiothoracic surgery according to claim 6, characterized in that: The rear side of the air inlet (4002) is fitted with an annular plate (405), and the inner cavity of the annular plate (405) is fixedly connected to a dust filter (407), the front side of the annular plate (405) is fixedly connected to positioning blocks near the top and bottom, the rear side of the air heater cylinder (401) is provided with positioning grooves matching the positioning blocks near the top and bottom, and the two positioning blocks are respectively inserted into the inner cavities of adjacent positioning grooves, and the rear side of the annular plate (405) is fitted with a dust filter (407) near the top and bottom. A limit plate (406) is provided, and the top and bottom of the air heating cylinder (401) are fixedly connected to a fixing plate near the rear side, and the fixing plate is provided with a through hole, and two T-shaped rods (408) are passed through the inner cavities of the two through holes, and the rear ends of the T-shaped rods (408) are fixedly connected to the adjacent limit plate (406), and the outer sides of the two T-shaped rods (408) are sleeved with springs (409), and the two ends of the springs (409) are fixedly connected to the fixing plate and the T-shaped rod (408) respectively.

8. A closed care drainage device for cardiothoracic surgery according to claim 7, characterized in that: Bearings are fixedly connected to the left and right sides of the box body (104) near the bottom, and a transmission rod (414) is provided through the inner cavities of the two bearings. A transmission groove wheel (412) is fixedly connected to the left and right ends of the transmission rod (414). A driven groove wheel (411) is sleeved and fixed to the outer sides of the two rotating shafts (410). Belts (413) are provided between the two driven groove wheels (411) and the adjacent transmission groove wheels (412), and the two transmission groove wheels (412) are transmission-connected to the adjacent driven groove wheels (411) through the adjacent belts (413). A servo motor (415) is fixedly installed on the left side of the inner cavity of the box body (104) near the bottom, and a transmission gear (416) is fixedly connected to the power output end of the servo motor (415). A driven gear (417) is meshed with the bottom of the transmission gear (416), and the driven gear (417) is sleeved and fixed to the outer wall of the transmission rod (414).

Images