CN116570399A - Artificial bladder system based on piezoelectric pump and urine storage and urination structure integration - Google Patents

Artificial bladder system based on piezoelectric pump and urine storage and urination structure integration Download PDF

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Publication number
CN116570399A
CN116570399A CN202310688609.1A CN202310688609A CN116570399A CN 116570399 A CN116570399 A CN 116570399A CN 202310688609 A CN202310688609 A CN 202310688609A CN 116570399 A CN116570399 A CN 116570399A
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China
Prior art keywords
piezoelectric pump
urination
urine storage
artificial bladder
urine
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CN202310688609.1A
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Chinese (zh)
Inventor
轩伟鹏
邓义东
倪嘉锋
李文钧
董树荣
金浩
孙玲玲
骆季奎
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Hangzhou Dianzi University
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Hangzhou Dianzi University
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Priority to CN202310688609.1A priority Critical patent/CN116570399A/en
Publication of CN116570399A publication Critical patent/CN116570399A/en
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/042—Urinary bladders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/48—Operating or control means, e.g. from outside the body, control of sphincters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/48—Operating or control means, e.g. from outside the body, control of sphincters
    • A61F2/482—Electrical means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0001—Means for transferring electromagnetic energy to implants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for

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  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Transplantation (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Urology & Nephrology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • External Artificial Organs (AREA)

Abstract

The invention discloses an artificial bladder system based on integration of a piezoelectric pump and a urine storage and urination structure; the system includes an in vivo portion and an in vitro control device. The internal part comprises an artificial bladder, internal control equipment, an auxiliary urination device, a piezoelectric pump and an air storage tank. The auxiliary urination device is provided with a concave containing area. The artificial bladder is disposed within the accommodation area of the auxiliary urination apparatus. The auxiliary urination device comprises an inner deformation layer and an outer deformation layer. The pressurizing cavity in the auxiliary urination device is connected with the air storage tank through a piezoelectric pump. The in-vivo control device comprises a magnetic induction coil; the magnetic induction coil is connected with the piezoelectric pump. The extracorporeal control apparatus comprises a wireless powered transmitting module capable of generating a varying magnetic field. The invention adopts the miniature piezoelectric pump to control the deformation of the flexible material, thereby realizing the control of the artificial bladder, and being difficult to cause damage and urinary system infection and other complications in the process of squeezing the artificial bladder due to the skin-friendly property and softness of the flexible material.

Description

Artificial bladder system based on piezoelectric pump and urine storage and urination structure integration
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to an artificial bladder system based on an integrated piezoelectric pump and a urine storage and urination structure and a working method thereof.
Background
The bladder is an organ that stores and discharges urine in the human body. Bladder disease refers to a series of diseases that affect bladder function. Such as bladder cancer, bladder tumor, bladder stones, etc. In some cases, the physician will have the patient resect the bladder, for example in the treatment of bladder cancer or severe bladder injury. Under these conditions, doctors will install an artificial bladder in the body after cutting the patient's bladder so that the patient can store urine and discharge it in time. Conventional artificial bladders require external devices to control and drain urine, which limits the range of motion and quality of life for the patient. With the recent development of materials and biomedical engineering, built-in artificial bladder has appeared. The built-in artificial bladder can store and discharge urine in the body without the help of external equipment, so that the bladder is more convenient and comfortable.
However, the presently known built-in artificial bladder has some problems. For example, some built-in artificial bladders may be at risk of leakage or infection, which may lead to serious health problems. In addition, some built-in workers are either bulky or stiff in material, or are prone to allergic or other untoward reactions. Thus, there is a need for a new type of built-in flexible artificial bladder that overcomes these problems and improves the quality of life and safety of the cystectomy patient.
Disclosure of Invention
The invention aims to provide an artificial bladder system based on integration of a piezoelectric pump and a urine storage and drainage structure and a working method thereof.
The invention provides an artificial bladder system based on integration of a piezoelectric pump and a urine storage and urination structure, which comprises an in-vivo part and in-vitro control equipment; the internal part comprises an artificial bladder, internal control equipment, a piezoelectric pump and an air storage tank.
The artificial bladder comprises an expansion constraint sleeve, an allantoic memory body and a first pressure sensor. The expansion constraint sleeve is wrapped on the outer side of the urine storage bag body; a urination pressure cavity is formed between the outer side surface of the urine storage bag body and the inner side surface of the expansion constraint sleeve. The first pressure sensor is arranged in the urination pressure chamber. The outer side surface of the expansion constraint sleeve is provided with a pressurizing interface communicated with the urination pressure cavity; the inflation interface, the piezoelectric pump and the air storage tank on the inflation constraint sleeve are communicated in sequence. A first pressure sensor and an on-off valve are arranged between the pressurizing interface on the expansion constraint sleeve and the piezoelectric pump; the first pressure sensor is positioned on one side of the on-off valve close to the urination pressure cavity, and can detect the air pressure in the urination pressure cavity.
The expansion coefficient of the urine storage bag body is smaller than that of the expansion constraint sleeve; the urination pressure chamber is connected with the air storage tank through a piezoelectric pump; the in-vivo control device comprises a magnetic induction coil; the magnetic induction coil is connected with the piezoelectric pump; the extracorporeal control apparatus comprises a wireless energy-supply transmitting module capable of generating a changing magnetic field.
Preferably, a second pressure sensor is arranged in the air storage tank.
Preferably, the in-vivo control device further comprises a power supply module and an energy storage element; the magnetic induction coil charges the energy storage element through the power supply module; the power supply module supplies power to the electronic elements in the body part through the electric energy provided by the magnetic induction coil or the energy storage element.
Preferably, the in-vivo control device further comprises a signal processing module and a wireless communication module; the external control equipment also comprises a control terminal; the signal processing module is communicated with the control terminal through the wireless communication module.
Preferably, the external control device is mounted on an annular waistband.
Preferably, the external control device further comprises a display screen for displaying the current urine volume and the frequency of urination, and a key for controlling the start and stop of urination.
Preferably, the pressurizing interface on the expansion constraint sleeve is connected with the piezoelectric pump through an air pipe; the first pressure sensor is arranged at the end part of the air pipe connected with the piezoelectric pump.
Preferably, the expansion constraint sleeve and the urine storage bag body are made of biocompatible elastic materials; the elastic modulus of the expansion constraint sleeve is greater than the elastic modulus of the urine storage bag body.
The working method of the artificial bladder system based on the integration of the piezoelectric pump and the urine storage and urination structure comprises the following steps:
step one, a first pressure sensor periodically detects the pressure in a urination pressure cavity; the urine storage bag body in the artificial bladder gradually expands in the continuous urine storage process, so that the pressure in the urine discharge pressure cavity is increased; and when the pressure measured by the first pressure sensor is greater than or equal to a preset value, entering a step two.
And step two, the in-vivo control equipment sends a urination prompt to a user.
Step three, controlling the external control equipment to execute the urination process by a user; the urination flow is as follows: the wireless energy supply transmitting module generates a variable magnetic field; the magnetic induction coil generates current in the changed magnetic field, so that the piezoelectric pump charges gas into the urination pressure cavity; the urination pressure cavity expands after being filled with gas, so that the urine storage bag body is extruded, urine of the urine storage bag body is extruded outwards, and the discharge of the urine is completed.
Step four, the wireless energy supply transmitting module generates a changed magnetic field; the magnetic induction coil generates current in the changing magnetic field, so that the piezoelectric pump pumps the gas in the urination pressure chamber back to the gas storage tank, and the artificial bladder 10 returns to the original shape.
Preferably, in the third step, if the number of times or time that the in-vivo control device sends the urination prompt reaches the preset value, the user still does not actively control the in-vitro control device to execute the urination process, and the in-vitro control device automatically executes the urination process.
The invention has the beneficial effects that:
1. according to the invention, the artificial bladder is designed into an inner-outer double-layer structure, and the urine storage bag body of the inner layer is compressed in a mode of pressurizing a urine discharge pressure cavity formed between the inner layer and the outer layer, so that the automatic urine discharge action of the artificial bladder is realized; the inner and outer double-layer structure greatly improves the compactness of the artificial bladder structure.
2. According to the invention, the urine volume sensing of the artificial bladder is indirectly realized by utilizing the characteristic that the urine storage bag body of the inner layer compresses the urine discharge pressure cavity when the urine volume is increased and by detecting the pressure of the urine discharge pressure cavity, so that a user can be actively reminded of urination according to the urine volume in the artificial bladder, and the artificial bladder system based on the integration of the piezoelectric pump and the urine storage and urination structure provided by the invention has all complete functions of the natural bladder, and the life quality of a patient is improved.
3. The invention adopts the piezoelectric pump to control the deformation of the elastic material, thereby realizing the control of the artificial bladder, and the flexible material is not easy to cause damage in the process of squeezing the artificial bladder and is also not easy to cause urinary system infection and other complications due to the skin-friendly property and softness of the flexible material. In addition, the invention directly generates current for driving the piezoelectric pump to operate in the electromagnetic coil in the body by providing a variable magnetic field in the body, thereby greatly simplifying the control system, further improving the compactness of the artificial bladder system based on the integration of the piezoelectric pump and the urine storage and urination structure and reducing the damage to the human body caused by the implantation of the artificial bladder system based on the integration of the piezoelectric pump and the urine storage and urination structure.
Drawings
Fig. 1 is an overall schematic of the present invention.
Fig. 2 is a schematic structural view of an in-vivo control device in the present invention.
Fig. 3 is a schematic diagram of the operation of the present invention.
Fig. 4 is a schematic structural diagram of an extracorporeal control apparatus according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in FIG. 1, an artificial bladder system based on an integration of a piezoelectric pump and a urine storage and drainage structure includes an in-vivo part and an in-vitro part. The internal body part includes an artificial bladder 10, an internal body control device 20 disposed outside the artificial bladder 10, a piezoelectric pump 40, and an air reservoir 50. The extracorporeal portion includes an extracorporeal control apparatus 30 in communication with an intracorporeal control apparatus.
The artificial bladder 10 includes an inflation constraining sheath 11, an allantoic reservoir 12, and a first pressure sensor 13. The expansion restricting sleeve 11 is wrapped on the outer side of the urine storage bag body 12; there is no bond between the inner side of the expansion-constraining sheath 11 and the outer side of the urine storage bladder 12. The urine storage bag body 12 and the inner side of the expansion restricting sleeve 11 form a closed urine discharge pressure chamber 101 which can be expanded by pressurizing and contracted by pumping.
The input interface and the output interface of the urine storage bag body 12 extend out of the expansion constraint sleeve 11 and are connected in series between the cut ureters; the input interface of the urine storage bladder 12 is connected to the kidneys of the human body through the ureter. The output interface of the urine storage bag 12 is connected to the urethra of the human body through the ureter.
The outer side surface of the expansion constraint sleeve 11 is provided with a pressurizing interface communicated with the urination pressure cavity 101; the two ventilation ports of the piezoelectric pump 40 are respectively connected with the charging port on the expansion constraint sleeve 11 and the ventilation port of the air storage tank 50 through air pipes. The piezoelectric pump 40 controls the expansion and contraction of the urination pressure chamber 101 by pumping in or out air stored in the air reservoir 50. A first pressure sensor 13 and an on-off valve are arranged between a pressurizing interface on the expansion constraint sleeve 11 and the piezoelectric pump 40; the first pressure sensor 13 is located on the side of the on-off valve close to the urination pressure chamber 101, and is capable of detecting the air pressure in the urination pressure chamber 101.
The on-off valve can control the opening and closing of the charging port on the expansion constraint sleeve 11; the on-off valve is controlled by the in-vivo control device 20 and is matched with the piezoelectric pump 40 and the first pressure sensor 13 for use; when the piezoelectric pump 40 works, the on-off valve is opened, so that the pressurization and the pressure relief of the urination pressure cavity 101 are realized; the on-off valve is closed when the piezoelectric pump 40 is not in operation, avoiding gas output in the urination pressure chamber 101 when the urine storage bladder 12 is inflated. The on-off valve adopts the deformation control of piezoelectric material to turn on and off. The on-off valve is wrapped with medical grade material.
The difference in the expansion coefficients of the urine storage bladder 12 is smaller than the expansion coefficient of the expansion restricting sheath 11. In this embodiment, the urine storage bladder 12 is made of medical grade elastic material; the expansion restricting sheath 11 is made of titanium alloy. The medical grade elastic material adopts any one of polyurethane, silica gel, balloon grade polymer and fluorinated polymer.
When the urine storage bag 12 starts to store urine, the urine storage bag 12 expands, so that the urination pressure chamber 101 between the expansion restricting cover 11 and the urine storage bag 12 is compressed and the pressure increases. When the first pressure sensor 13 detects that the pressure exceeds a set value, a signal is sent to a signal processing module 22 in the internal control device 20; the signal processing module 22 controls the on-off valve to be conducted, and the piezoelectric pump 40 is started through the magnetic induction coil 23, and the piezoelectric pump 40 presses air in the air storage tank 50 into the urination pressure cavity 101, so that the urination pressure cavity 101 expands, and the urination is started by extruding the urine storage bag body 12. When urination is completed, the piezoelectric pump 40 pumps the air in the expansion restricting sleeve 11 back into the air storage tank 50, and the allantoic body 12 automatically recovers deformation; thereafter, the on-off valve medium is controlled and the artificial bladder 10 enters the next urination cycle.
The air tank 50 includes a tank body 51 made of titanium alloy, and a second pressure sensor 52 built in the tank body 51. When air is pressed into or pulled out of the tank 51, the second pressure sensor 52 will monitor the air pressure in the tank 51 at all times, avoiding the service life of the air storage tank 50 from being reduced due to the excessive or insufficient pressure in the tank, and the urine storage bag 12 from being excessively squeezed due to the excessive pressurization of the urine discharge pressure chamber 101.
As shown in fig. 2, the in-vivo control device 20 includes a wireless communication module 21, a signal processing module 22, a magnetic induction coil 23, a power supply module 24, and an energy storage element 25.
The signal processing module 22 can control the on-off between the magnetic induction coil 23 and the piezoelectric pump 40 and the on-off between the magnetic induction coil 23 and the power supply module 24, so as to control the magnetic induction coil 23 to switch between driving the piezoelectric pump 40 and supplying power to the energy storage element by the power supply module 24
The wireless communication module 21 is used for wireless communication with the extracorporeal control apparatus 30; the wireless communication module 21 adopts bluetooth or Zigbee communication protocol.
The signal processing module 22 is configured to receive the signal from the wireless communication module 21 and process the signal to control the start and stop of the piezoelectric pump 40.
The magnetic induction coil 23 is used for cutting magnetic lines of force to generate current and controlling the start and stop of the piezoelectric pump 40.
The power supply module 24 is connected to the energy storage element 25 for supplying power to all electronic components in the in-vivo part including the wireless communication module 21 and the signal processing module 22.
The energy storage element 25 is used for storing the surplus electric energy generated by the magnetic induction coil 23, and is used as a backup power source when the in-vivo control device 20 is in a power failure state.
The first pressure sensor 13 in the artificial bladder 10 will read the pressure of the urination pressure chamber 101 between the inflation restriction sleeve 11 and the urine storage bladder 12 once at regular time intervals, thereby monitoring the urine storage volume in the urine storage bladder 12. Since the pressure of the urination pressure chamber 101 and the volume of the urine storage bladder 12 are positively correlated, the urine storage volume in the urine storage bladder 13 can be monitored by the in-vivo control device 20 through the pressure measured by the first pressure sensor 13.
In some embodiments, the piezoelectric pump has a volumetric size of 1.024cm 3 。
As shown in fig. 3, the working principle of the in-vivo part is as follows:
when the urine storage bag 12 gradually stores urine, the urine storage bag 12 continuously expands to squeeze the space between the expansion constraint sleeve 11, the pressure between the urine storage bag 12 and the expansion constraint sleeve 11 continuously increases, the first pressure sensor 13 continuously reads the pressure until the pressure enters a preset exhaust pressure range, at this time, the in-vivo control device 20 can send a urine storage full signal to the in-vitro control device 30 to inform a user that the urine in the artificial bladder 10 is close to full storage, the in-vitro control device 30 is reminded to remind the user to press a start button in the in-vitro control device 30, the in-vitro control device 30 can send a signal for starting the piezoelectric pump 40 to the in-vivo control device 20, the signal processing module 22 in the in-vivo control device 20 sends a signal for starting the piezoelectric pump 40 to press the air in the air storage tank 50 into the expansion constraint sleeve 11 through the magnetic induction coil 23, and the urine storage bag 12 starts to shrink to squeeze and discharge the urine. When the urine storage bag 12 is emptied, the second pressure sensor 52 in the air storage tank 50 is also lowered to the preset value of the in-vivo control device 20, and at this time, the in-vivo control device 20 will start the piezoelectric pump 40 again through the magnetic induction coil 23 to pump out the air in the expansion restriction sleeve 11 and store the air in the air storage tank 50. If the user has discomfort during urination, the inhalation of the piezoelectric pump 40 can be terminated in advance by the stop button on the external control device 30.
As shown in fig. 4, the extracorporeal control apparatus 30 comprises an annular waistband 31, and a low power display screen 32, a control terminal 33 and a wireless power supply transmitting module 34 mounted on the annular waistband 31.
The annular waistband 31 is worn at the waist and abdomen.
The low power display 32 is used to display the current urine volume and frequency of urination.
The control terminal 33 is used for controlling the low-power consumption display screen 32 to display, generating a changing magnetic field through the wireless energy supply transmitting module 34 and communicating with the wireless communication module 22. The control terminal 33 is provided with a key for controlling the start and stop of urination.
The wireless energy-supplying transmitting terminal 34 is used for transmitting an alternating electromagnetic field and performing wireless communication.
In particular use, a user wears the external control device 30 on the waist such that the wireless energy-supplying transmitting module 34 in the external control device 30 is aligned with the magnetic induction coil 23 in the internal control device 20, facilitating control and charging of the internal control device. When the current urine volume in the low power display 32 exceeds a certain value, the control terminal 33 slightly vibrates a button for reminding the user to start urination in time. When the control terminal 33 slightly vibrates for 3 times continuously, the user still does not press the button for starting urination in time, the control terminal 33 sends a signal for starting urination to the in-vivo control device 20 through the wireless energy supply transmitting module 34 under the condition that the button for starting urination is not pressed, and the urine is emptied in time to ensure the body health of the user. The control terminal 33 can turn on and off the wireless power supply transmitting module 34 at regular time, so that the magnetic induction coil 23 generates current at regular time, and the power supply module supplies power to the energy storage element, so as to ensure that the in-vivo control device 20 implanted in the body can continuously work.

Claims (10)

1. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure comprises an in-vivo part and an in-vitro control device (30); the in-vivo part comprises an artificial bladder (10) and an in-vivo control device (20); the method is characterized in that: the internal part also comprises a piezoelectric pump (40) and an air storage tank (50);
the artificial bladder (10) comprises an expansion constraint sleeve (11), an allantoic sac body (12) and a first pressure sensor (13); the expansion constraint sleeve (11) is wrapped on the outer side of the urine storage bag body (12); a urination pressure cavity (101) is formed between the outer side surface of the urine storage bag body (12) and the inner side surface of the expansion constraint sleeve (11); the outer side surface of the expansion constraint sleeve (11) is provided with a pressurizing interface communicated with the urination pressure cavity (101); the pressurizing interface, the piezoelectric pump (40) and the air storage tank (50) on the expansion constraint sleeve (11) are sequentially communicated; a first pressure sensor (13) and an on-off valve are arranged between a pressurizing interface on the expansion constraint sleeve (11) and the piezoelectric pump (40); the first pressure sensor (13) is positioned at one side of the on-off valve close to the urination pressure cavity (101) and can detect the air pressure in the urination pressure cavity (101);
the expansion coefficient of the urine storage bag body (12) is smaller than that of the expansion constraint sleeve (11); the urination pressure cavity (101) is connected with the air storage tank (50) through the piezoelectric pump (40); the in-vivo control device (20) comprises a magnetic induction coil (23); the magnetic induction coil (23) is connected with the piezoelectric pump; the extracorporeal control apparatus (30) includes a wireless powered transmitting module (34) capable of generating a varying magnetic field.
2. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 1, wherein: the air storage tank (50) is internally provided with a second pressure sensor (52).
3. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 1, wherein: the in-vivo control device (20) also comprises a power supply module (24) and an energy storage element (25); the magnetic induction coil (23) charges the energy storage element (25) through the power supply module (24); the power supply module (24) supplies power to the electronic components in the internal body part through the electric energy provided by the magnetic induction coil (23) or the energy storage element (25).
4. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 1, wherein: the in-vivo control device (20) also comprises a signal processing module (22) and a wireless communication module (21); the external control equipment (30) also comprises a control terminal (33); the signal processing module (22) communicates with the control terminal (33) through the wireless communication module (21).
5. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 1, wherein: the external control device (30) is arranged on the annular waistband (31).
6. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 1, wherein: the extracorporeal control apparatus (30) further comprises a display screen (32) for displaying the current urine volume and the frequency of urination, and keys for controlling the start and stop of urination.
7. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 1, wherein: the pressurizing interface on the expansion constraint sleeve (11) is connected with the piezoelectric pump (40) through an air pipe; the first pressure sensor (13) is arranged at the end part of the air pipe connected with the piezoelectric pump (40).
8. An artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 1, wherein: the expansion constraint sleeve (11) and the urine storage bag body (12) are made of biocompatible elastic materials; the elastic modulus of the expansion constraint sleeve (11) is larger than that of the urine storage bag body (12).
9. The method for operating an artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 8, wherein: the method comprises the following steps:
step one, a first pressure sensor (13) periodically detects the pressure in a urination pressure chamber (101); the urine storage bag body (12) in the artificial bladder (10) is gradually expanded in the continuous urine storage process, so that the pressure in the urine discharge pressure cavity (101) is increased; when the pressure measured by the first pressure sensor (13) is greater than or equal to a preset value, entering a step two;
step two, the in-vivo control device (20) sends a urination prompt to a user;
step three, a user controls the external control equipment (30) to execute a urination process; the urination flow is as follows: the on-off valve is conducted, and the wireless energy supply transmitting module (34) generates a changed magnetic field; the magnetic induction coil (23) generates current in the changed magnetic field, so that the piezoelectric pump (40) charges gas into the urination pressure chamber (101); the urination pressure cavity (101) expands after being filled with gas, so that the urine storage bag body (12) is extruded, urine of the urine storage bag body (12) is extruded outwards, and the discharge of the urine is completed;
step four, the wireless energy supply transmitting module (34) generates a variable magnetic field; the magnetic induction coil (23) generates current in the changed magnetic field, so that the piezoelectric pump (40) pumps the gas in the urination pressure chamber (101) back to the gas storage tank (50), the artificial bladder 10 returns to the original shape, and then the on-off valve is closed.
10. The method for operating an artificial bladder system based on the integration of a piezoelectric pump and a urine storage and drainage structure according to claim 9, wherein: in the third step, if the number of times or time of the in-vivo control device (20) sending out the urination prompt reaches the preset value, the user still does not actively control the in-vitro control device (30) to execute the urination process, and the in-vitro control device (30) automatically executes the urination process.
CN202310688609.1A 2023-06-09 2023-06-09 Artificial bladder system based on piezoelectric pump and urine storage and urination structure integration Withdrawn CN116570399A (en)

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CN202310688609.1A CN116570399A (en) 2023-06-09 2023-06-09 Artificial bladder system based on piezoelectric pump and urine storage and urination structure integration

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Application publication date: 20230811