Constant temperature control stethoscope for cardiac surgery

Abstract

The invention discloses a constant temperature control stethoscope for cardiac surgery, which belongs to the technical field of medical instruments and comprises a stethoscope head, a lower shell is arranged outside the stethoscope head, a protection bin for storing the stethoscope head is arranged inside the lower shell, and a through hole with the inner diameter larger than the length of the stethoscope head is formed in the middle of the bottom of the protection bin. According to the stethoscope, the stethoscope head is stored in the lower shell, the electric heating plate is arranged in the protection bin in the lower shell, and the silica gel heating pad is arranged on the outer side of the bottom of the lower shell, so that in the using process of the stethoscope, the area in contact with the skin and a vibrating diaphragm on the stethoscope head can be heated; in addition, a shaft rod and fan blades are arranged in the protection bin, and a turbulent flow assembly composed of a transmission gear and a rotating part is arranged in the transmission bin, so that in the process of pushing out the auscultation head, air blowing and preheating can be conducted on the skin of the area where the auscultation head is to be attached, stimulation to the skin is reduced, and the using effect is improved.

Description

Technical Field

[0001] The invention relates to a stethoscope, in particular to a constant temperature controlled stethoscope for cardiac surgery, belonging to the technical field of medical equipment. Background Art

[0002] In the prior art, for example, the invention with application number 201810683357.2 discloses a dustproof and noise-reducing electronic stethoscope. In order to solve the problem that most of the sound pickup parts of the current electronic stethoscope are exposed to the outside when in use, which are easily affected by the external environment, and are also easily bumped and scratched, directly affecting the auscultation effect, in addition, the sound pickup part is also easily affected by the external environmental noise during auscultation, which easily affects the correct judgment of auscultation. By setting the surface of the second dustproof plate in an arc shape, the six second dustproof plates are distributed in a ring array with the axis of the dustproof ring as the array center, and the center of the six second dustproof plates is circular, the effect of dustproofing the sound pickup plate inside the noise reduction tube is achieved. By setting the material of the noise reduction tube to include a rubber sound insulation pad and its manufacturing method, the hardness requirement of the noise reduction tube is increased on the basis of softness, and the cost is low. After adding the spring, on the one hand, it will not cause harm to the human body due to the hardness, and on the other hand, it will not affect the normal use of the stethoscope due to the softness, thereby having the characteristics of low cost of noise reduction and sound insulation materials.

[0003] Similar to the above application, there are still some shortcomings: When used at low room temperature, the bottom of the stethoscope head is made of aluminum. If it comes into direct contact with the skin, it will cause greater irritation and affect the comfort of use. In addition, the protective operation of the stethoscope head during use is inconvenient and has low practicality.

[0004] Therefore, a thermostatically controlled cardiac surgery stethoscope is designed to optimize the above-mentioned problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a constant temperature controlled stethoscope for cardiac surgery. The stethoscope head is stored inside the lower shell, and an electric heating plate is arranged in the protective compartment inside the lower shell, and a silicone heating pad is arranged on the outer side of the bottom of the lower shell. During use, the device can heat the skin contact area and the diaphragm on the stethoscope head, thereby improving the comfort of use during stethoscope. In addition, a shaft rod, fan blades, transmission gears inside the transmission compartment, and a spoiler assembly composed of a rotating part are arranged inside the protective compartment. During the process of pushing the stethoscope head out, the skin in the area where the stethoscope head is to be attached can be blown and preheated, thereby reducing irritation to the skin and improving the use effect. Through the installation groove, the pressure block, the first spring, the rack, the gear set or the spiral rod, the limit ring, the toothed disc, the straight groove The rotating part composed of the components can be controlled by side extrusion or up and down extrusion during use to drive the rotation of the transmission gear driven by the rotating part, thereby controlling the rotation of the shaft rod, which is more practical and convenient. A shielding assembly consisting of an annular plate, an annular groove, a rotating shaft, an arc-shaped connecting rod, and an arc-shaped shielding plate is arranged at the bottom of the lower shell body, and then the inner gear ring is engaged with the linkage gear at the bottom of the shaft rod. The opening and closing of the shielding assembly is controlled by a linkage control method, which is more convenient to operate and can automatically shield the bottom of the lower shell body. The lifting assembly consisting of an inner sleeve, a vertical guide groove, a sliding rod, an outer sleeve, an arc-shaped guide groove, and a tooth block is engaged with the tooth block on the outside of the outer sleeve and the linkage gear. When the shielding assembly is opened or closed, the extension and retraction protection of the stethoscope head can be automatically controlled, which is more practical.

[0006] The purpose of the present invention can be achieved by adopting the following technical solutions: A constant temperature controlled stethoscope for cardiac surgery comprises a stethoscope head, a lower shell is arranged outside the stethoscope head, a protective compartment for storing the stethoscope head is provided inside the lower shell, a through hole with an inner diameter greater than the length of the stethoscope head is provided at the middle position of the bottom of the protective compartment, a shielding component for blocking the through hole is provided at the inner bottom of the protective compartment, a lifting component for controlling the up and down movement of the stethoscope head is provided at the inner top of the protective compartment, a silicone electric heating sheet is provided at the bottom of the lower shell, an electric heating plate is provided on the inner side of the protective compartment, a spoiler component for increasing the gas flow rate inside the protective compartment is provided inside the protective compartment, an upper shell is provided on the top of the lower shell, a shock absorbing component is provided between the upper shell and the lower shell, a battery is provided at the inner top of the upper shell, and a contact switch electrically connected to the silicone electric heating sheet and the electric heating plate is provided at the top of the upper shell.

[0007] Preferably: the shock absorbing assembly includes a slide groove, a limit block, a second spring and a rubber protective film, a distance is left between the top of the lower shell and the bottom of the upper shell, a slide groove is opened at the middle position of the top of the lower shell, a limit block is vertically installed inside the slide groove, the top of the limit block is fixedly connected to the upper shell, and a second spring is provided between the bottom end of the limit block and the slide groove.

[0008] Preferably, a rubber ring is fixed to the top end of the outer side of the upper shell and the bottom end of the outer side of the lower shell, and the outer side of the rubber ring is arc-shaped.

[0009] Preferably: the spoiler assembly includes a shaft, fan blades, a transmission compartment, a transmission gear and a rotating part, the shaft is evenly distributed vertically in a circular array inside the protective compartment, and the shaft is rotatably connected to the top of the protective compartment, the outer side of the shaft is installed with fan blades, the transmission compartment is opened at the top of the lower shell body, the shaft extends to the interior of the transmission compartment, the top of the shaft is fixed with a transmission gear, and a rotating part for controlling the rotation of the transmission gear is provided between the transmission gears.

[0010] Preferably: the rotating part includes a mounting groove, a pressure block, a first spring, a rack and a gear set, the mounting grooves are symmetrically arranged on both sides of the lower shell body, pressure blocks are slidably installed inside the mounting grooves, and the pressure blocks protrude to the outside of the protective bin, a first spring is provided between the pressure blocks and the inner end of the mounting grooves, a rack extending to the inside of the transmission bin is fixed to the bottom of the inner side of the pressure blocks, a gear set meshing with the rack is rotatably installed at both ends of the inside of the transmission bin, the gear set meshes with the transmission gear, and a toothed belt meshes between the outer sides of the transmission gears.

[0011] Preferably: the rotating part includes a spiral rod, a limiting ring, a toothed disc and an I-shaped groove, the spiral rod is fixed at the bottom of the limiting block and extends to the interior of the transmission bin, the limiting ring is fixed to the inner bottom of the transmission bin, the top of the limiting ring is rotatably installed with a toothed disc meshing with the transmission gear, an I-shaped groove is opened in the middle position of the toothed disc, and the spiral rod is inserted into the interior of the I-shaped groove.

[0012] Preferably: the shielding assembly includes an annular plate, an annular groove, a rotating shaft, an arc-shaped connecting rod, an arc-shaped shield plate and a toggle assembly, the annular plate is rotatably installed on the inner bottom of the protective bin, an annular groove is provided on the inner side of the annular plate, a rotating shaft is rotatably installed between the upper and lower sides inside the annular groove, an arc-shaped connecting rod is fixed on the rotating shaft, an arc-shaped shield plate is evenly rotatably installed on the outer side of the top of the through opening, the top of the arc-shaped shield plate is rotatably connected to the end of the arc-shaped connecting rod, and a toggle assembly for controlling the rotation of the annular plate is provided inside the protective bin.

[0013] Preferably, the toggle assembly comprises an inner gear ring and a linkage gear, wherein the inner gear ring is fixed on the top of the annular plate, the linkage gear is mounted on the bottom end of the shaft, and the inner side of the inner gear ring is meshed with the linkage gear.

[0014] Preferably: the lifting assembly includes an inner sleeve, a vertical guide groove, a sliding rod, an outer sleeve, an arc guide groove and a driving member, the inner sleeve is fixed to the inner top of the protective bin, vertical guide grooves are symmetrically and vertically opened on both sides of the inner sleeve, sliding rods are slidably arranged inside the vertical guide grooves, and both sets of sliding rods are fixedly connected to the stethoscope head, an outer sleeve is sleeved on the outer side of the inner sleeve, the top of the outer sleeve is rotatably connected to the inner top of the protective bin, arc guide grooves are obliquely opened at symmetrical positions on both sides of the outer sleeve, the outer ends of the sliding rods are located inside the arc guide grooves, and a driving member for controlling the rotation of the outer sleeve is provided at the bottom of the outer side of the outer sleeve.

[0015] Preferably, the driving member is a tooth block, which is evenly fixed on the bottom of the outer side of the outer sleeve in an annular array, and the linkage gear is meshed with the tooth block.

[0016] The beneficial effects of the present invention are: The present invention provides a constant temperature controlled cardiac surgery stethoscope, which stores the stethoscope head inside the lower shell, arranges an electric heating plate in the protective compartment inside the lower shell, and arranges a silicone heating pad on the outer side of the bottom of the lower shell, so that the device can heat the skin contact area and the diaphragm on the stethoscope head during use, thereby improving the comfort of use during auscultation. In addition, a shaft rod, a fan blade, a transmission gear inside the transmission compartment, and a spoiler assembly composed of a rotating part can be arranged inside the protective compartment, so that the skin in the area where the stethoscope head is to be attached can be blown and preheated during the process of pushing the stethoscope head out, thereby reducing the stimulation to the skin and improving the use effect. The rotating part composed of the installation groove, the pressure block, the first spring, the rack, the gear set or the spiral rod, the limit ring, the gear plate and the straight groove can be used to control the rotation of the transmission gear by the rotating part by side extrusion or up and down extrusion during use, thereby controlling the rotation of the shaft rod, which is more practical and convenient. By arranging a shielding assembly consisting of an annular plate, an annular groove, a rotating shaft, an arc-shaped connecting rod, and an arc-shaped shielding plate at the bottom of the lower shell, and then meshing the linkage gear at the bottom of the shaft rod through the inner gear ring, a linkage control method is adopted to control the opening and closing of the shielding assembly, which is more convenient to operate and can automatically shield the bottom of the lower shell; Through the lifting assembly composed of an inner sleeve, a vertical guide groove, a sliding rod, an outer sleeve, an arc guide groove, and a tooth block, the tooth block on the outside of the outer sleeve is engaged with the linkage gear, which can automatically control the extension and retraction of the stethoscope head when the shielding assembly is opened or closed, thereby increasing practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front cross-sectional view of a preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention; Figure 2A front view of a preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention; Figure 3 A preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention Figure 1 Enlarged view of point A in the middle; Figure 4 A diagram of a lifting assembly of a preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention; Figure 5 A diagram of a shielding component of a preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention; Figure 6 A cross-sectional view of a ring plate of a preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention; Figure 7 A preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention Figure 1 The structure diagram at B is enlarged; Figure 8 A diagram of a shock absorbing assembly of a preferred embodiment of a thermostatically controlled cardiac surgery stethoscope of the present invention; Fig. 9 This is a front cross-sectional view of a preferred embodiment of a thermostatically controlled stethoscope for cardiac surgery of the present invention.

[0018] In the figure: 1, lower shell; 2, protective compartment; 3, through-hole; 4, shielding assembly; 5, stethoscope head; 6, lifting assembly; 7, silicone electric heating sheet; 8, electric heating plate; 9, upper shell; 10, battery; 11, contact switch; 12, shock-absorbing assembly; 13, annular plate; 14, annular groove; 15, rotating shaft; 16, arc connecting rod; 17, arc shielding plate; 18, inner gear ring; 19, transmission compartment; 20, mounting groove; 21, pressing block; 22. First spring; 23. Rack; 24. Gear set; 25. Transmission gear; 26. Shaft; 27. Linkage gear; 28. Fan blade; 29. ​​Inner sleeve; 30. Vertical guide groove; 31. Slide rod; 32. Outer sleeve; 33. Arc guide groove; 34. Tooth block; 35. Slide groove; 36. Limit block; 37. Second spring; 38. Rubber protective film; 39. Screw rod; 40. Limit ring; 41. Tooth disc; 42. I-shaped groove. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0020] like Figure 1-Figure 9As shown, this embodiment provides a constant temperature controlled stethoscope for cardiac surgery, including a stethoscope head 5, a lower shell 1 is provided on the outside of the stethoscope head 5, a protective compartment 2 for storing the stethoscope head 5 is provided inside the lower shell 1, a through hole 3 with an inner diameter greater than the length of the stethoscope head 5 is provided at the middle position of the bottom of the protective compartment 2, a shielding component 4 for blocking the through hole 3 is provided at the inner bottom of the protective compartment 2, a lifting component 6 for controlling the up and down movement of the stethoscope head 5 is provided at the inner top of the protective compartment 2, a silicone electric heating sheet 7 is provided at the bottom of the lower shell 1, an electric heating plate 8 is provided on the inner side of the protective compartment 2, a spoiler component for increasing the gas flow rate inside the protective compartment 2 is provided inside the protective compartment 2, an upper shell 9 is provided on the top of the lower shell 1, a shock absorbing component 12 is provided between the upper shell 9 and the lower shell 1, a battery 10 is provided at the inner top of the upper shell 9, and a contact switch 11 electrically connected to the silicone electric heating sheet 7 and the electric heating plate 8 is provided at the top of the upper shell 9.

[0021] The overall working principle is: when not in use, the stethoscope head 5 is stored inside the protective compartment 2 to protect the stethoscope head 5, and the shielding component 4 shields the bottom of the protective compartment 2. When in use, if the room temperature is low, the contact switch 11 can be pressed to start the silicone electric heater 7 and the electric heating plate 8. The silicone electric heater 7 heats the bottom of the upper shell 9 in contact with the skin, and the electric heating plate 8 heats the inside of the protective compartment 2 to heat the diaphragm at the bottom of the stethoscope head 5 to avoid irritating the patient's skin. The silicone electric heater 7 and the inside of the protective compartment 2 are controlled by the temperature control circuit to maintain a constant temperature, and then the shell is taken out, and before contacting the skin, the shielding state of the shielding component 4 is released, and the bottom end of the stethoscope head 5 is controlled by the lifting component 6 to extend from the bottom of the opening 3. At this time, the diaphragm at the bottom of the stethoscope head 5 has a certain temperature and will not irritate the skin, and then the stethoscope operation is performed.

[0022] In this embodiment, if Figure 8 As shown, the shock absorbing assembly 12 includes a slide groove 35, a limit block 36, a second spring 37 and a rubber protective film 38. A gap is left between the top of the lower shell 1 and the bottom of the upper shell 9. A slide groove 35 is opened at the middle position of the top of the lower shell 1. A limit block 36 is vertically installed inside the slide groove 35. The top of the limit block 36 is fixedly connected to the upper shell 9. A second spring 37 is provided between the bottom end of the limit block 36 and the slide groove 35.

[0023] Local working principle: The upper shell 9 and the lower shell 1 are separated and a second spring 37 is provided between them. Therefore, when the device falls, the second spring 37 can be used for buffering and shock absorption. The use of a rubber protective film 38 between the upper shell 9 and the lower shell 1 can prevent debris from entering the gap between the two shells.

[0024] In this embodiment, if Figure 2As shown, a rubber ring is fixed to the top of the outer side of the upper shell 9 and the bottom of the outer side of the lower shell 1, and the outer side of the rubber ring is arc-shaped.

[0025] Partial working principle: When the device falls, the use of the rubber ring can prevent the outer side of the shell from being damaged, protect the shell and reduce shock to the device.

[0026] In this embodiment, if Figure 3 , Figure 7 and Fig. 9 As shown, the spoiler assembly includes a shaft 26, a fan blade 28, a transmission chamber 19, a transmission gear 25 and a rotating part. The shaft 26 is evenly and vertically distributed in a circular array inside the protective chamber 2, and the shaft 26 is rotatably connected to the top of the protective chamber 2. The outer side of the shaft 26 is equipped with a fan blade 28. The transmission chamber 19 is opened at the top of the lower shell 1. The shaft 26 extends to the inside of the transmission chamber 19. The top of the shaft 26 is fixed with a transmission gear 25, and a rotating part for controlling the rotation of the transmission gear 25 is provided between the transmission gears 25.

[0027] Local working principle: When the interior of the protective chamber 2 is heated, the rotation of the shaft 26 can be controlled by the rotating part. The rotation of the shaft 26 can control the rotation of the fan blades 28 to increase the fluidity of the gas to ensure that the temperature inside the protective chamber 2 is uniform.

[0028] In this embodiment, if Figure 7 As shown, the rotating part includes a mounting groove 20, a pressure block 21, a first spring 22, a rack 23 and a gear set 24. The mounting grooves 20 are symmetrically arranged on both sides of the lower shell 1. The inside of the mounting grooves 20 is slidably installed with a pressure block 21, and the pressure block 21 protrudes to the outside of the protective bin 2. A first spring 22 is provided between the pressure block 21 and the inner end of the mounting groove 20. The bottom of the inner side of the pressure block 21 is fixed with a rack 23 extending to the inside of the transmission bin 19. Both ends of the inside of the transmission bin 19 are rotatably installed with a gear set 24 meshing with the rack 23. The gear set 24 is meshed with a transmission gear 25, and a toothed belt is meshed between the outer sides of the transmission gear 25.

[0029] Local working principle: when in use, before the device contacts the skin, the index finger contacts the contact switch 11 to control the heating of the device, and then the middle finger and thumb squeeze the pressure block 21. In the process of pressing the pressure block 21, the rack 23 will be controlled to slide toward the inside of the transmission compartment 19. At the same time, the first spring 22 is compressed, and the rack 23 drives the gear set 24 to rotate. The gear set 24 drives the transmission gear 25 to rotate, and a toothed belt is arranged between the outer sides of the transmission gear 25. Therefore, multiple sets of transmission gears 25 rotate at the same time, and the shaft 26 drives the fan blades 28 to rotate, thereby accelerating the gas flow rate.

[0030] In this embodiment, if Fig. 9As shown, the rotating part includes a screw rod 39, a limiting ring 40, a toothed disc 41 and an I-shaped groove 42. The screw rod 39 is fixed at the bottom of the limiting block 36 and extends to the inside of the transmission bin 19. The limiting ring 40 is fixed to the inner bottom of the transmission bin 19. The top of the limiting ring 40 is rotatably mounted with a toothed disc 41 that meshes with the transmission gear 25. An I-shaped groove 42 is provided at the middle position of the toothed disc 41, and the screw rod 39 is inserted into the inside of the I-shaped groove 42.

[0031] Local working principle: When in use, before the device comes into contact with the skin, the middle finger and thumb are placed on the surface of the lower shell 1, and after the index finger contacts the contact switch 11 to control the device to heat up, the upper shell 9 is pressed downward and the second spring 37 is compressed. During the downward movement of the upper shell 9, the control screw rod 39 is controlled to slide inside the I-shaped groove 42, driving the toothed disc 41 to rotate, and the rotation of the toothed disc 41 will simultaneously control the rotation of the transmission gear 25.

[0032] In this embodiment, if Figure 1 , Figure 5 and Figure 6 As shown, the shielding assembly 4 includes an annular plate 13, an annular groove 14, a rotating shaft 15, an arc-shaped connecting rod 16, an arc-shaped shield plate 17 and a toggle assembly. The annular plate 13 is rotatably installed on the inner bottom of the protective bin 2. An annular groove 14 is provided on the inner side of the annular plate 13. A rotating shaft 15 is rotatably installed between the upper and lower sides inside the annular groove 14. An arc-shaped connecting rod 16 is fixed on the rotating shaft 15. An arc-shaped shield plate 17 is evenly rotatably installed on the outer side of the top of the through opening 3. The top of the arc-shaped shield plate 17 is rotatably connected to the end of the arc-shaped connecting rod 16. A toggle assembly for controlling the rotation of the annular plate 13 is provided inside the protective bin 2.

[0033] Local working principle: Before auscultation, the toggle assembly is used to control the rotation of the annular plate 13. During the rotation, the annular plate 13 will pull the arc connecting rod 16. Since the arc connecting rod 16 and the arc shield 17 are rotationally connected, and one end of the arc shield 17 is rotationally installed on the outside of the top of the opening 3, the arc shield 17 will rotate with the connection point on the outside of the opening 3 as the axis under the action of the pulling force of the arc connecting rod 16, thereby releasing the blocking state of the opening 3.

[0034] In this embodiment, if Figure 1 and Figure 3 As shown, the toggle assembly includes an inner gear ring 18 and a linkage gear 27 . The inner gear ring 18 is fixed on the top of the annular plate 13 . The linkage gear 27 is installed on the bottom end of the shaft 26 . The inner side of the inner gear ring 18 is meshed with the linkage gear 27 .

[0035] Local working principle: Since the linkage gear 27 is fixed at the bottom end of the shaft 26, when the rotating part is used to control the rotation of the shaft 26, the rotation of the linkage gear 27 will be automatically controlled to open the opening 3. At the same time, the hot air inside the protective chamber 2 will also be discharged during the mixing process. The hot air will preheat the area that will be in contact with the diaphragm on the stethoscope head 5, reduce temperature stimulation, and improve comfort of use.

[0036] In this embodiment, if Figure 4 As shown, the lifting assembly 6 includes an inner sleeve 29, a vertical guide groove 30, a slide rod 31, an outer sleeve 32, an arc guide groove 33 and a driving member. The inner sleeve 29 is fixed to the inner top of the protective bin 2. Vertical guide grooves 30 are symmetrically and vertically opened on both sides of the inner sleeve 29. Slide rods 31 are slidably arranged inside the vertical guide grooves 30. Both sets of slide rods 31 are fixedly connected to the stethoscope head 5. The outer side of the inner sleeve 29 is sleeved with an outer sleeve 32. The top of the outer sleeve 32 is rotatably connected to the inner top of the protective bin 2. Arc guide grooves 33 are obliquely opened at symmetrical positions on both sides of the outer sleeve 32. The outer ends of the slide rods 31 are located inside the arc guide grooves 33. A driving member for controlling the rotation of the outer sleeve 32 is provided at the bottom of the outer side of the outer sleeve 32.

[0037] Local working principle: after the opening 3 is opened, the driving member is used to control the rotation of the outer sleeve 32. During the rotation of the outer sleeve 32, the sliding rod 31 slides inside the arc guide groove 33, and the vertical guide groove 30 limits the sliding rod 31. The sliding rod 31 will not rotate. The sliding rod 31 slides inside the vertical guide groove 30, so the stethoscope head 5 can only move vertically, and the stethoscope head 5 is extended from the opening 3 to contact the patient's skin care.

[0038] In this embodiment, if Figure 3 As shown, the driving member is a tooth block 34 , which is evenly fixed at the bottom of the outer side of the outer sleeve 32 in an annular array, and the linkage gear 27 is meshed with the tooth block 34 .

[0039] Partial working principle: Since the outside of the outer sleeve 32 is meshed with the linkage gear 27 through the tooth block 34, the shielding assembly 4 moves vertically while opening, making practical control more convenient.

[0040] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A thermostatically controlled cardiac surgical stethoscope, comprising a stethoscope head (5), characterized in that: The stethoscope head (5) is provided with a lower shell (1) on the outside, a protective chamber (2) for storing the stethoscope head (5) is provided on the inside of the lower shell (1), a through hole (3) having an inner diameter greater than the length of the stethoscope head (5) is provided at the middle position of the bottom of the protective chamber (2), a shielding component (4) for blocking the through hole (3) is provided on the inner bottom of the protective chamber (2), a lifting component (6) for controlling the up and down movement of the stethoscope head (5) is provided on the inner top of the protective chamber (2), a silicone electric heating sheet (7) is provided on the bottom of the lower shell (1), an electric heating plate (8) is provided on the inner side of the protective chamber (2), a spoiler component for increasing the flow rate of gas inside the protective chamber (2) is provided on the inside of the protective chamber (2), an upper shell (9) is provided on the top of the lower shell (1), a shock absorbing component (12) is provided between the upper shell (9) and the lower shell (1), a storage battery (10) is provided on the inner top of the upper shell (9), and a contact switch (11) electrically connected to the silicone electric heating sheet (7) and the electric heating plate (8) is provided on the top of the upper shell (9).

2. A thermostatically controlled cardiac surgery stethoscope according to claim 1, characterized in that: The shock absorbing assembly (12) comprises a slide groove (35), a limit block (36), a second spring (37) and a rubber protective film (38); a distance is left between the top of the lower shell (1) and the bottom of the upper shell (9); a slide groove (35) is provided at the middle position of the top of the lower shell (1); a limit block (36) is vertically installed inside the slide groove (35); the top of the limit block (36) is fixedly connected to the upper shell (9); and a second spring (37) is provided between the bottom of the limit block (36) and the slide groove (35).

3. A thermostatically controlled cardiac surgery stethoscope according to claim 1 or 2, characterized in that: A rubber ring is fixed to the top end of the outer side of the upper shell (9) and the bottom end of the outer side of the lower shell (1), and the outer side of the rubber ring is arc-shaped.

4. A thermostatically controlled cardiac surgery stethoscope according to claim 3, characterized in that: The spoiler assembly comprises a shaft (26), a fan blade (28), a transmission chamber (19), a transmission gear (25) and a rotating part. The shaft (26) is evenly and vertically distributed in a ring array inside the protection chamber (2), and the shaft (26) is rotatably connected to the top of the protection chamber (2). The outer side of the shaft (26) is equipped with a fan blade (28). The transmission chamber (19) is opened at the top of the lower shell (1), and the shaft (26) extends to the inside of the transmission chamber (19). The top of the shaft (26) is fixed with a transmission gear (25), and a rotating part for controlling the rotation of the transmission gear (25) is provided between the transmission gears (25).

5. A thermostatically controlled cardiac surgery stethoscope according to claim 4, characterized in that: The rotating part comprises a mounting groove (20), a pressure block (21), a first spring (22), a rack (23) and a gear set (24). The mounting groove (20) is symmetrically arranged on both sides of the lower shell (1). A pressure block (21) is slidably mounted inside the mounting groove (20), and the pressure block (21) protrudes to the outside of the protective chamber (2). A first spring (22) is arranged between the pressure block (21) and the inner end of the mounting groove (20). A rack (23) extending to the inside of the transmission chamber (19) is fixed to the bottom of the inner side of the pressure block (21). A gear set (24) meshing with the rack (23) is rotatably mounted at both ends of the transmission chamber (19). The gear set (24) meshes with a transmission gear (25), and a toothed belt meshes between the outer sides of the transmission gear (25).

6. A thermostatically controlled cardiac surgery stethoscope according to claim 4, characterized in that: The rotating part comprises a screw rod (39), a limiting ring (40), a toothed disc (41) and a straight groove (42). The screw rod (39) is fixed at the bottom of the limiting block (36) and extends to the inside of the transmission bin (19). The limiting ring (40) is fixed to the inner bottom of the transmission bin (19). The top of the limiting ring (40) is rotatably mounted with a toothed disc (41) meshing with the transmission gear (25). The toothed disc (41) is provided with a straight groove (42) at the middle position, and the screw rod (39) is inserted into the inside of the straight groove (42).

7. A thermostatically controlled cardiac surgical stethoscope according to claim 4, 5 or 6, characterized in that: The shielding assembly (4) comprises an annular plate (13), an annular groove (14), a rotating shaft (15), an arc-shaped connecting rod (16), an arc-shaped shield plate (17) and a toggle assembly. The annular plate (13) is rotatably mounted on the inner bottom of the protective chamber (2). An annular groove (14) is provided on the inner side of the annular plate (13). A rotating shaft (15) is rotatably mounted between the upper and lower sides of the annular groove (14). The arc-shaped connecting rod (16) is fixed on the rotating shaft (15). An arc-shaped shield plate (17) is evenly rotatably mounted on the outer side of the top of the through hole (3). The top of the arc-shaped shield plate (17) is rotatably connected to the end of the arc-shaped connecting rod (16). A toggle assembly for controlling the rotation of the annular plate (13) is provided inside the protective chamber (2).

8. A thermostatically controlled cardiac surgery stethoscope according to claim 7, characterized in that: The toggle assembly comprises an inner gear ring (18) and a linkage gear (27), wherein the inner gear ring (18) is fixed on the top of the annular plate (13), and the linkage gear (27) is mounted on the bottom end of the shaft (26), and the inner side of the inner gear ring (18) is meshed with the linkage gear (27).

9. A thermostatically controlled cardiac surgery stethoscope according to claim 8, characterized in that: The lifting assembly (6) comprises an inner sleeve (29), a vertical guide groove (30), a slide rod (31), an outer sleeve (32), an arc guide groove (33) and a driving member. The inner sleeve (29) is fixed to the inner top of the protection bin (2). Vertical guide grooves (30) are symmetrically and vertically opened on both sides of the inner sleeve (29). Slide rods (31) are slidably arranged inside the vertical guide grooves (30). Both sets of slide rods (31) are fixedly connected to the stethoscope head (5). An outer sleeve (32) is sleeved on the outer side of the inner sleeve (29). The top of the outer sleeve (32) is rotatably connected to the inner top of the protection bin (2). Arc guide grooves (33) are obliquely opened at symmetrical positions on both sides of the outer sleeve (32). The outer ends of the slide rods (31) are located inside the arc guide grooves (33). A driving member for controlling the rotation of the outer sleeve (32) is provided at the bottom of the outer side of the outer sleeve (32).

10. A thermostatically controlled cardiac surgery stethoscope according to claim 9, characterized in that: The driving member is a tooth block (34), which is evenly fixed on the bottom of the outer side of the outer sleeve (32) in an annular array, and the linkage gear (27) is meshed with the tooth block (34).

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