A water bath massager for newborns

Abstract

The invention discloses a newborn water bath massager, comprising a shell connected with an adjustable strap, a drive unit and a control unit arranged in the shell, a control keyboard connected to the control unit arranged outside the shell, the drive unit comprising a double-shaft extension motor connected to the control unit, the drive shaft of the double-shaft extension motor being a hollow shaft, the lower end of the hollow shaft being fixedly connected with a hollow rotating rod passing through the shell, the rotating rod comprising at least one cross bar, the end of the cross bar being rotatably connected with a massage ball, a through hole being arranged in the massage ball, the inner hole of the hollow shaft being connected with the inner hole of the rotating rod and the through hole, the massage ball being wrapped with a detachable water storage shell, the water storage shell being provided with a connecting port connected to the through hole, the upper end of the hollow shaft being connected with a rotating joint, and the rotating joint being connected with a water supply pipe. The invention can massage the abdomen of a newborn to increase metabolism in the body, strengthen the recovery of gastrointestinal function, promote the absorption of nutrients by the stomach and intestines, and plays an important role in improving the digestive function.

Description

Technical Field

[0001] The invention relates to the technical field of medical massage, in particular to a water bath massager for newborns. Background Art

[0002] With the continuous research on neonatology, the survival rate of newborns in intensive care units has been significantly improved, but their feeding problems have become the main clinical problem. Because the gastrointestinal function of newborns is not yet mature, they are prone to feeding intolerance during feeding, which affects the development of newborns. At present, in clinical practice, indwelling gastric tubes and parenteral nutrition are often used to care for newborns, but this only solves the early nutrition problem of newborns. Various measures still need to be taken to solve the feeding problem of the entire nursing process of newborns. Many domestic literatures point out that abdominal massage can effectively stimulate abdominal receptors, increase the excitability of the nervous system, and has a significant effect on improving the gastrointestinal function of newborns.

[0003] Although there are many types of abdominal massage instruments for adults, there are no abdominal massage instruments for neonates. In addition, the intestinal nerve cells of neonates are not fully developed, and the probability of intestinal flatulence is particularly high. Compared with adults, neonates need abdominal massage to relieve intestinal flatulence more. However, there is no record of abdominal massagers for neonates after searching all the literature and patents. Therefore, the design of abdominal massagers for neonates is particularly important. Neonates breathe abdominally, and their abdomens are more fragile than those of adults. There are more stringent requirements for the weight of the instrument, the intensity of massage, and the heating temperature.

[0004] After analysis, the reasons why there is no neonatal massager on the market are:

[0005] 1. Newborns breathe abdominally, and their abdomens are more fragile than those of adults. Therefore, there are more stringent requirements on the weight of the instrument, the massage method, strength, and heating temperature.

[0006] 2. Because newborns do not have their umbilical cords removed, space must be left for the umbilical cord in the construction of the massager, so the structure is different from that of adult massagers.

[0007] 3. Newborns have very weak resistance. If the instrument has a complex structure and is not easy to disinfect thoroughly, the risk of infection in newborns will increase. Summary of the invention

[0008] In view of the deficiencies in the above-mentioned background technology, the present invention provides a newborn water bath massager, which solves the technical problem of newborn intestinal flatulence.

[0009] The technical solution of the present invention is implemented as follows: a newborn water bath massager, comprising a shell, an adjustable strap connected to the shell, a drive unit, a control unit for controlling the drive unit, and a battery for supplying power to the drive unit and the control unit are arranged in the shell, and a control keyboard connected to the control unit is arranged outside the shell, and the control unit can be started and stopped by the control keyboard. The drive unit comprises a double-axle extension motor connected to the control unit, the drive shaft of the double-axle extension motor is a hollow shaft, the lower end of the hollow shaft is fixedly connected to a hollow rotating rod passing through the shell, the rotating rod comprises at least one cross bar, and the end of the cross bar is rotatably connected to a massage ball. Driven by the drive shaft of the double-axle extension motor, the rotating rod rotates synchronously, and the rotating rod also drives the massage ball to perform a revolution around the drive shaft, and the massage ball also rotates around the cross bar. A through hole is arranged in the massage ball, the inner hole of the hollow shaft is connected to the inner hole of the rotating rod and the through hole, the massage ball is wrapped with a detachable water storage shell, the water storage shell is provided with a connecting port connected to the through hole, the upper end of the hollow shaft is connected to a rotating joint, and the rotating joint is connected to a water supply pipe. The water storage shell is set to prevent the massage ball from coming into direct contact with the skin, and is also convenient for wiping and disinfection to prevent cross infection. The surface of the water storage shell can be coated with massage oil such as Sai Fu Run, which is convenient for cleaning and disinfection while avoiding skin friction injuries. In addition, delivering warm water to the water supply pipe can change the temperature of the water storage shell, thereby reliably controlling the massage temperature.

[0010] Furthermore, the rotating rod includes a vertical rod connected to the hollow shaft through a coupling, a water hole connected to the inner hole is arranged in the coupling, three horizontal cross bars extending outward are arranged at equal angles at the lower end of the vertical rod, and connecting holes connecting the through hole and the water hole are arranged in the cross bars and the vertical rod. The three cross bars can make full use of the space at the bottom of the shell, effectively improving the massage efficiency; at the same time, the reserved space between the three massage balls can avoid touching the umbilical cord of the newborn during massage, which can effectively avoid the adverse effects on the umbilical cord during massage, and avoid squeezing and rubbing the umbilical cord during massage, which may cause the umbilical cord to fall off unnaturally, bleed and become infected.

[0011] Furthermore, the water storage shell includes a hollow spherical cavity that wraps the massage ball, and the hollow spherical cavity is provided with a mounting opening at one end close to the crossbar, and a connecting pipe inserted into the through hole is provided on the inner side of the end away from the crossbar. The water storage shell can be conveniently mounted on the massage ball through the mounting opening, and it is also convenient to remove. The connecting pipe inserted into the through hole can achieve a sealing effect to prevent water leakage between the water storage shell and the massage ball.

[0012] Furthermore, the end of the connecting pipe passes through the through hole and enters into the communicating hole, and the end of the connecting pipe is provided with a stopping end which stops in the communicating hole, so as to further seal and prevent water leakage.

[0013] Furthermore, the water supply pipe is connected to a water tank disposed in the housing, the water tank is provided with a water inlet, a sealing plug is provided in cooperation with the water inlet, a heater and a temperature sensor connected to the control unit are provided in the water tank, and the control unit can control the working state of the heater according to the temperature detected by the temperature sensor.

[0014] Furthermore, the rotary joint is provided with a water inlet channel and a water return channel, the hollow shaft, the coupling, the rotary rod, the massage ball and the water storage shell are all provided with independent channels respectively matched with the water inlet channel and the water return channel, the water supply pipe is connected to the water inlet channel, and the water return channel is connected with a water return pipe leading to the water tank. By providing the water supply channel and the water return channel, the warm water in the water storage shell can be circulated, and the massage temperature can be more accurately controlled to meet the needs of newborns.

[0015] Furthermore, a micro water pump connected to the return pipe is provided inside, the water suction port of the micro water pump is connected to the return pipe, and the micro water pump is connected to the control unit. The provision of the micro water pump can further accelerate the circulation of warm water. The fluctuation of water flow during massage can simulate the amniotic fluid environment of the uterus, thereby increasing the comfort and sense of security of massage.

[0016] Furthermore, the dual-axis extension motor is a clockwise rotating motor, and the direction of the intestine is clockwise, so the designed massage direction is also clockwise massage, following the anatomical characteristics of clockwise massage. The intestinal tissue function of newborns is not perfect, and the intestinal function is not as strong as that of adults. In addition, the small intestinal mesentery of adults has a strong adaptability in the abdominal cavity and can play a good role in pulling the intestinal tube, while the small intestinal mesentery of children is relatively long and loose, and the small intestine is not well fixed in the abdominal cavity, so it is easy for the intestines to overlap each other, so it is very important to massage in the clockwise direction that is the same as the direction of the intestine.

[0017] Furthermore, the water tank is an annular box body surrounding the outer periphery of the double-axle extension motor, and the top of the water tank is sealed with a detachable threaded cover.

[0018] Furthermore, a pressure sensor is provided between the lower end of the hollow shaft and the upper end of the rotating rod, and the pressure sensor is connected to a control unit, and the control unit is connected to a display for displaying the value monitored by the pressure sensor. When adjusting the adjustable strap, the value detected by the pressure sensor will be displayed on the display through the controller, and the medical staff can intuitively observe the pressure value, thereby facilitating the adjustment of the appropriate massage pressure.

[0019] The use of the present invention to massage the abdomen of a newborn can increase the body's metabolism, strengthen the recovery of gastrointestinal function, promote the absorption of nutrients by the stomach and intestines, and play an important role in improving digestive function. Performing abdominal massage on a newborn can accelerate the blood circulation in the newborn's body, significantly speed up the gastrointestinal blood flow, and promote the improvement of digestive function. At the same time, since abdominal massage can promote intestinal peristalsis and defecation, it can effectively shorten the first defecation time of the newborn, increase the number of daily defecation times of the newborn, enhance appetite, reduce abdominal distension, promote the absorption of nutrients by the stomach and intestines, shorten the recovery period, and play an important role in the growth of the newborn. Abdominal massage can also accelerate the excretion of bilirubin by promoting intestinal peristalsis in the child, which helps to reduce the absorption of bilirubin by the intestines and is conducive to improving the clinical symptoms related to jaundice in the child. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the invention;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0025] Embodiment 1, a newborn water bath massager, such as Figure 1 and Figure 2As shown, it includes a shell 1 with a smooth edge, and an adjustable strap 2 is connected to the shell 1. One end of the adjustable strap 2 is fixedly connected to one side of the shell 1 through a fixed ear plate 2-1, and the other end of the adjustable strap 2 is movably connected to the adjustable ear plate 2-2. The adjustable ear plate 2-2 is fixedly arranged on the other side of the shell 1 opposite to the fixed ear plate 2-1. A through hole that passes through from top to bottom is arranged in the adjustable ear plate 2-2, and the adjustable strap 2 is inserted in the through hole. An adjusting bolt 2-3 for pressing the adjustable strap 2 in the through hole is arranged on one side of the adjustable ear plate 2-2. When in use, the adjustable strap 2 is wrapped around the back of the baby, the length of the adjustable strap 2 inserted into the through hole is changed, and the free end of the adjustable strap 2 is fixed by the adjusting bolt 2-3, and then the appropriate tightness is adjusted, and the shell 1 is fixed to the abdomen of the newborn.

[0026] A driving unit, a control unit 8 for controlling the driving unit, and a battery 1-3 for supplying power to the driving unit and the control unit 8 are arranged in the shell 1. The driving unit is transmission-connected to a massage ball 5. A control keyboard 1-4 connected to the control unit 8 is arranged outside the shell 1. The control keyboard 1-4 can be used to start and stop the control unit 8, thereby controlling the start and stop of the massage ball 5 for massaging the abdomen of the newborn.

[0027] The driving unit includes a double-axle extension motor 3 connected to a control unit 8, and the control unit 8 controls the start and stop of the double-axle extension motor 3 through a driver, and the control keyboard 1-4 includes a case for controlling the driver. The driving shaft of the double-axle extension motor 3 is a hollow shaft 3-1, and the lower end of the hollow shaft 3-1 is fixedly connected with a hollow rotating rod 4 that passes through the outer shell 1. The rotating rod 4 includes three cross bars 4-1, and the ends of the cross bars 4-1 are rotatably connected to the massage ball 5. Driven by the hollow shaft 3-1 of the double-axle extension motor 3, the rotating rod 4 rotates synchronously, and the rotating rod 4-1 also drives the massage ball 5 to revolve around the driving shaft, and the massage ball 5 also rotates around the cross bar 4-1. A through hole 5-1 is set in the massage ball 5, and the inner hole 3-2 of the hollow shaft 3-1 is connected with the inner hole of the rotating rod 4 and the through hole 5-1.

[0028] The massage ball 5 is wrapped with a detachable water storage shell 6, and the water storage shell 6 is provided with a connecting port 6-1 connected to the through hole 5-1. The upper end of the hollow shaft 3-1 is connected with a rotary joint 3-3, and the rotary joint 3-3 is connected with a water supply pipe 3-4. By providing warm water into the water supply pipe 3-4, the warm water can enter the water storage shell 6 through the rotary joint 3-3, the hollow shaft 3-1, the inner hole of the rotating rod 4, and the connecting port 6-1 in sequence, so that the water storage shell 6 has a gentle massage temperature. The water storage shell 6 can prevent the massage ball 5 from directly contacting the skin, and the surface of the water storage shell 6 can be coated with massage oil such as Sai Fu Run, which is convenient for cleaning and disinfection, and can avoid skin friction injuries and prevent cross infection.

[0029] The water storage shell 6 includes a hollow spherical cavity 6-2 that wraps the massage ball 5. The hollow spherical cavity 6-2 is provided with a mounting port 6-3 at one end close to the crossbar 4-1, and a connecting pipe 6-4 inserted into the through hole 5-1 is provided on the inner side of the end away from the crossbar 4-1. The water storage shell 6 can be conveniently installed on the massage ball 5 through the mounting port 6-3, and it is also convenient to remove, clean, disinfect and replace. The connecting pipe 6-4 inserted into the through hole 5-1 can play a sealing effect to prevent water leakage between the water storage shell 6 and the massage ball 5.

[0030] Furthermore, if Figure 3 As shown, the end of the connecting pipe 6-4 passes through the through hole 5-1 and enters the connecting hole 4-3. The end of the connecting pipe 6-4 is provided with a stopping end 6-5 which stops in the connecting hole 4-3, which can further seal and prevent water leakage.

[0031] The rotating rod 4 includes a vertical rod 4-2 connected to the hollow shaft 3-1 through a coupling 3-5, and a rolling bearing 1-1 is arranged at the position where the rotating rod 4 passes through the outer shell 1. A connecting hole 4-3 is arranged in the vertical rod 4-2, and a water hole 3-6 connected to the inner hole 3-2 is arranged in the coupling 3-5. The warm water in the hollow shaft 3-1 can pass through the water hole 3-2 in the coupling 3-5 and lead to the connecting hole 4-3 of the vertical rod 4-2. The three outwardly extending cross bars 4-1 are arranged horizontally at equal angles at the lower end of the vertical rod 4-2, and a connecting hole 4-3 is also arranged in the cross bar 4-1. The connecting hole 4-3 of the cross bar 4-1 is connected to the connecting hole 4-3 of the vertical rod 4-2, so that the warm water can finally enter the water storage outer shell 6 through the connecting hole 4-3 of the cross bar 4-1. The three cross bars 4-1 can make full use of the space at the bottom of the shell 1 and effectively speed up the massage efficiency; at the same time, the space reserved among the three massage balls 5 can avoid touching the umbilical cord of the newborn during massage, which can effectively avoid the adverse effects on the umbilical cord during massage and avoid squeezing and rubbing the umbilical cord during massage, which may cause unnatural detachment, bleeding and infection of the umbilical cord.

[0032] Embodiment 2, a water bath massager for newborns, the water supply pipe 3-4 is connected to a water tank 7-1 disposed in the housing 1, the water tank 7-1 is provided with a water inlet 7-5, and a sealing plug 7-6 is provided in cooperation with the water inlet 7-5. By providing the built-in water tank 7-1, warm water can be added once and massage can be performed directly, avoiding the disadvantage of external water supply during massage.

[0033] Furthermore, a heater 7-2 and a temperature sensor 7-3 connected to the control unit 8 are provided in the water tank 7-1. The control unit 8 can monitor the water temperature detected by the temperature sensor 7-3 in real time. When the water temperature is lower than the normal massage temperature, the control unit 8 can control the heater 7-2 to heat the water in the water tank 7-1 according to the temperature detected by the temperature sensor 7-3. The setting of the temperature sensor 7-3 and the heater 7-2 improves the convenience of use, and no manual timing is required, which avoids the need to regularly replace the warm water in the water tank 7-1; in addition, it also improves the reliability of the massage temperature, and can automatically control the temperature in real time.

[0034] The other structures of this embodiment are the same as those of Embodiment 1.

[0035] Embodiment 3, a water bath massager for newborns, wherein the rotary joint 3-3 is provided with a water inlet channel and a water return channel, the water supply pipe 3-4 is connected to the water inlet channel, the water return channel is connected to a water return pipe 3-7 leading to a water tank 7-1, the hollow shaft 3-1, the coupling 3-5, the rotating rod 4, the massage ball 5 and the water storage shell 6 are all provided with independent channels respectively cooperating with the water inlet channel and the water return channel, forming a closed circulation loop.

[0036] The warm water in the water tank 7-1 can flow through the water supply pipe 3-4, the rotary joint 3-3, the hollow shaft 3-1, the coupling 3-5, the rotating rod 4, the massage ball 5 in sequence into the water storage shell 6, and then the warm water can flow back to the water tank 7-1 from the water storage shell 6 through the massage ball 5, the rotating rod 4, the coupling 3-5, the hollow shaft 3-1, the rotary joint 3-3, and the return pipe 3-7 in sequence. By providing the water supply channel and the return channel, the warm water in the water storage shell 6 can be circulated, and the massage temperature can be more accurately controlled to meet the needs of the newborn.

[0037] The other structures of this embodiment are the same as those of Embodiment 2.

[0038] Embodiment 4, a water bath massager for newborns, a micro water pump 7-4 connected to the return pipe 3-7 is arranged in the water tank 7-1, the water suction port of the micro water pump 7-4 is connected to the return pipe 3-7, the micro water pump 7-4 is connected to the control unit 8, the micro water pump 7-4 is arranged to further accelerate the circulation of warm water, and the fluctuation of water flow during massage can simulate the environment of uterine amniotic fluid, thereby increasing the comfort and sense of security of massage.

[0039] The other structures of this embodiment are the same as those of Embodiment 3.

[0040] Embodiment 5, a newborn water bath massager, the water tank 7-1 is an annular box body surrounding the outer periphery of the double-axle extension motor 3, the annular water tank 7-1 can not only make the whole device more compact and small, but also ensure that the force is evenly distributed in all directions during massage, fully ensuring the massage effect. The top seal of the water tank 7-1 is matched with a detachable threaded cover 1-2, and the detachable threaded cover 1-2 also covers the double-axle extension motor 3, making the whole device beautiful in appearance and convenient for disassembly and maintenance.

[0041] The other structures of this embodiment are the same as those of Embodiment 2, 3 or 4.

[0042] Embodiment 6, a water bath massager for newborns, the double-shaft extension motor 3 is a clockwise rotating motor, the direction of the intestine is clockwise, so the designed massage direction is also clockwise massage, following the anatomical characteristics of clockwise massage. The intestinal tissue function of newborns is not perfect, and the intestinal function is not as strong as that of adults. In addition, the small intestinal mesentery of adults has a strong adaptability in the abdominal cavity and can play a good role in pulling the intestine, while the small intestinal mesentery of children is relatively long and loose, and the small intestine is not well fixed in the abdominal cavity, so it is easy for the intestines to overlap each other, so it is very important to massage in the clockwise direction that is the same as the direction of the intestine.

[0043] The other structures of this embodiment may be the same as those of any of the above embodiments.

[0044] Embodiment 5, a water bath massager for newborns, a pressure sensor is provided between the lower end of the hollow shaft 3-1 and the upper end of the rotating rod 4, the pressure sensor is connected to the control unit 8, and the control unit 8 is connected to a display for displaying the value monitored by the pressure sensor. When adjusting the adjustable strap 2, the value detected by the pressure sensor will be displayed on the display through the controller, and the medical staff can intuitively observe the pressure value, thereby facilitating the adjustment of the appropriate massage pressure.

[0045] The other structures of this embodiment may be the same as any of the above embodiments.

[0046] The warm water circulation connection ports in the above embodiments are all provided with sealing components, and the dimensions of the housing and other structures can be customized according to clinical needs.

[0047] Anything not described in detail in this specification is a conventional technical means known to those skilled in the art.

[0048] The above description is only a preferred embodiment of the invention and is not intended to limit the invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the invention should be included in the protection scope of the invention.

Claims

1. A water bath massager for newborns, characterized in that: The invention comprises a shell (1) with a rounded edge, an adjustable strap (2) being connected to the shell (1), a drive unit, a control unit (8) for controlling the drive unit, and a storage battery (1-3) for supplying power to the drive unit and the control unit (8) being arranged inside the shell (1), a control keyboard (1-4) connected to the control unit (8) being arranged outside the shell (1), the drive unit comprising a double-axle extension motor (3) connected to the control unit (8), the drive shaft of the double-axle extension motor (3) being a hollow shaft (3-1), the lower end of the hollow shaft (3-1) being fixedly connected to a hollow rotating rod (4) passing through the shell (1) The rotating rod (4) comprises at least one cross rod (4-1), the end of the cross rod (4-1) is rotatably connected to a massage ball (5), a through hole (5-1) is provided in the massage ball (5), an inner hole (3-2) of the hollow shaft (3-1) is connected to the inner hole of the rotating rod (4) and the through hole (5-1), a detachable water storage shell (6) is wrapped around the massage ball (5), the water storage shell (6) is provided with a communication port (6-1) connected to the through hole (5-1), the upper end of the hollow shaft (3-1) is connected to a rotating joint (3-3), and the rotating joint (3-3) is connected to a water supply pipe (3-4); The rotating rod (4) comprises a vertical rod (4-2) connected to the hollow shaft (3-1) via a coupling (3-5); a water hole (3-6) connected to the inner hole (3-2) is arranged in the coupling (3-5); three horizontal rods (4-1) extending outward horizontally are arranged at equal angles at the lower end of the vertical rod (4-2); and a connecting hole (4-3) connecting the through hole (5-1) and the water hole (3-6) is arranged in the horizontal rod (4-1) and the vertical rod (4-2); The water storage housing (6) comprises a hollow spherical cavity (6-2) enclosing the massage ball (5); an installation opening (6-3) is provided at one end of the hollow spherical cavity (6-2) close to the cross bar (4-1), and a connecting pipe (6-4) inserted into the through hole (5-1) is provided on the inner side of an end away from the cross bar (4-1).

2. The newborn water bath massager according to claim 1, characterized in that: The end of the connecting pipe (6-4) passes through the through hole (5-1) and enters the communicating hole (4-3), and the end of the connecting pipe (6-4) is provided with a stopper end (6-5) which is stopped in the communicating hole (4-3).

3. The newborn water bath massager according to claim 1 or 2, characterized in that: The water supply pipe (3-4) is connected to a water tank (7-1) disposed in the housing (1); the water tank (7-1) is provided with a water inlet (7-5); a sealing plug (7-6) is provided in cooperation with the water inlet (7-5); and a heater (7-2) and a temperature sensor (7-3) connected to a control unit (8) are provided in the water tank (7-1).

4. The newborn water bath massager according to claim 3, characterized in that: The rotary joint (3-3) is provided with a water inlet channel and a water return channel; the hollow shaft (3-1), the coupling (3-5), the rotary rod (4), the massage ball (5) and the water storage housing (6) are all provided with independent channels respectively matching the water inlet channel and the water return channel; the water supply pipe (3-4) is connected to the water inlet channel, and the water return channel is connected to a water return pipe (3-7) leading to a water tank (7-1).

5. The newborn water bath massager according to claim 4, characterized in that: A micro water pump (7-4) connected to the water return pipe (3-7) is arranged in the water tank (7-1); a water suction port of the micro water pump (7-4) is connected to the water return pipe (3-7); and the micro water pump (7-4) is connected to the control unit (8).

6. The newborn water bath massager according to claim 4 or 5, characterized in that: The double-axle extension motor (3) is a clockwise rotating motor.

7. The newborn water bath massager according to claim 6, characterized in that: The water tank (7-1) is an annular box body surrounding the outer circumference of the double-axle extension motor (3), and the top of the water tank (7-1) is sealed with a detachable threaded cover (1-2).

8. The newborn water bath massager according to claim 6, characterized in that: A pressure sensor is provided between the lower end of the hollow shaft (3-1) and the upper end of the rotating rod (4); the pressure sensor is connected to a control unit (8); and the control unit (8) is connected to a display for displaying the value monitored by the pressure sensor.

Images