WO2021000296A1 - Catheter extension for peritoneal dialysis and method for operating catheter extension - Google Patents

Catheter extension for peritoneal dialysis and method for operating catheter extension Download PDF

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Publication number
WO2021000296A1
WO2021000296A1 PCT/CN2019/094592 CN2019094592W WO2021000296A1 WO 2021000296 A1 WO2021000296 A1 WO 2021000296A1 CN 2019094592 W CN2019094592 W CN 2019094592W WO 2021000296 A1 WO2021000296 A1 WO 2021000296A1
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WO
WIPO (PCT)
Prior art keywords
catheter extension
catheter
assistance
extension tube
assistance means
Prior art date
Application number
PCT/CN2019/094592
Other languages
French (fr)
Inventor
Frank Gong
Wanding DENG
Peng Yuan
Original Assignee
Fresenius Medical Care Deutschland Gmbh
Fresenius Medical Care R&D (Shanghai) Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Fresenius Medical Care Deutschland Gmbh, Fresenius Medical Care R&D (Shanghai) Co., Ltd. filed Critical Fresenius Medical Care Deutschland Gmbh
Priority to PCT/CN2019/094592 priority Critical patent/WO2021000296A1/en
Priority to CN201980098946.7A priority patent/CN114206412A/en
Publication of WO2021000296A1 publication Critical patent/WO2021000296A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/28—Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
    • A61M1/285—Catheters therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1601—Control or regulation
    • A61M1/1603—Regulation parameters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/28—Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1654—Dialysates therefor
    • A61M1/1656—Apparatus for preparing dialysates
    • A61M1/166—Heating
    • A61M1/1664—Heating with temperature control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
    • A61M1/3403—Regulation parameters
    • A61M1/341—Regulation parameters by measuring the filtrate rate or volume
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3306—Optical measuring means
    • A61M2205/331—Optical measuring means used as turbidity change detectors, e.g. for priming-blood or plasma-hemoglubine-interface detection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3334—Measuring or controlling the flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3576—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated

Definitions

  • the invention relates to a catheter extension for a peritoneal dialysis (PD) and a method for operating the catheter extension.
  • PD peritoneal dialysis
  • a peritoneal dialysis is a procedure for removing toxic substances and metabolites normally removed by the kidneys, and for aiding in regulation of fluid and electrolyte balance.
  • the procedure is accomplished by infusing PD solution through a conduit into the peritoneal cavity. Osmosis and diffusion occur across the peritoneal membrane between plasma of the patient and the solution.
  • a continuous ambulatory peritoneal dialysis is one form of PD that allows the patient to exchange the PD solutions 3-4 times per day.
  • CAPD usually uses a double-bag system (one bag for the solution and a separate empty bag for the patient’s effluent) .
  • the double-bag system provides a new solution bag and a new drainage bag for each treatment or exchange.
  • CAPD can also use a single-bag system, wherein only a solution bag is provided.
  • the patient usually uses a used empty solution bag from a previous treatment or exchange as the drainage bag of a subsequent treatment or exchange.
  • An automatic peritoneal dialysis is another form of PD which is achieved by an automatic peritoneal dialysis machine.
  • a catheter extension is usually needed to connect a catheter to be extended into the peritoneal cavity of the patient with a patient connector to be connected with a peritoneal dialysis bag system.
  • the fresh PD solution flows from the peritoneal dialysis bag system into the peritoneal cavity of the patient through the catheter extension.
  • a fluid with filtered waste products flows out of the peritoneal cavity through the catheter extension again and discarded.
  • an object of the invention is to provide an improved catheter extension for a peritoneal dialysis and a corresponding operating method.
  • a catheter extension for a peritoneal dialysis comprising: a catheter extension tube configured to fluidly connect a peritoneal dialysis bag system to a peritoneal catheter; and an assistance means configured to facilitate a dialysis process to be executed by means of the catheter extension tube; wherein the assistance means is configured to be fitted at the catheter extension tube.
  • the assistance means is integrated with the catheter extension tube as one piece.
  • the assistance means comprises: a detecting means configured to detect at least one parameter related to liquid transferred in the catheter extension tube; and/or a control means configured to be communicated with the detecting means; and/or a heater configured to on-line heat an inflow fluid; and/or a battery configured to power the detecting means, and the control means and the heater.
  • the detecting means comprises at least one of: a flow meter configured to measure an inflow volume of the liquid flowing through the catheter extension tube and/or an outflow volume of the liquid flowing through the catheter extension tube; and a sensing means configured to sense one or more properties of the liquid.
  • the flow meter is configured to determine an ultrafiltration volume based on the inflow volume and the outflow volume; and/or the sensing means comprises at least one device for detecting temperature, conductivity, particle number and/or turbidity.
  • the assistance means further comprises a communication means configured to be communicated with an external device, and/or a display configured to be communicated with the control means.
  • the communication means is configured as a wireless communication means; and/or the display is configured as a display screen; and/or the external device is a mobile device.
  • the wireless communication means is a Bluetooth or NFC means; and/or the display screen is a LCD or OLED screen; and/or the mobile device is a mobile phone or smart watch.
  • control means is configured as a mainboard and/or is configured to generate a reminder signal at the next treatment; and/or the reminder signal is displayed in the catheter extension and/or the external device.
  • the catheter extension further comprises a housing configured to cover a portion of the catheter extension tube and to cover at least a portion of the assistance means, and/or an activation element configured to activate the assistance means; and/or the catheter extension is configured to activate the assistance means automatically when rotating the catheter extension.
  • a method for operating the above catheter extension comprising the following steps: activating the assistance means; and executing operations for facilitating the dialysis process by the assistance means.
  • the method further comprises: detecting at least one parameter related to the liquid transferred in the catheter extension tube; and displaying the at least one parameter.
  • the parameter is used to calculate an ultrafiltration volume.
  • the method further comprises: synchronizing a timing of an external device to the assistance means; and/or setting the next treatment on the assistance means and/or the external device.
  • the method further comprises: generating a reminder signal when the next treatment is to be proceeded.
  • the method further comprises: identifying a code of a peritoneal dialysis bag; and/or comparing the code to a preset prescription to verify a correct treatment; and/or restoring the code in the control means or external device.
  • the catheter extension not only can achieve a basic function of establishing a fluid connection between the peritoneal dialysis bag system and the peritoneal catheter, but also achieve an additional function of facilitating the dialysis process.
  • Fig. 1 schematically shows a catheter extension for a peritoneal dialysis.
  • Fig. 2 shows the catheter extension according to an exemplary embodiment of the present invention.
  • Fig. 1 schematically shows a catheter extension 1 for a peritoneal dialysis, mainly comprising: a catheter extension tube 2 configured to fluidly connect a peritoneal dialysis bag system (not shown) to a peritoneal catheter (not shown) ; and an assistance means 3, in particular an electrical assistance means, configured to facilitate a dialysis process to be executed by means of the catheter extension tube 2; wherein the assistance means 3 is configured to be fitted at the catheter extension tube 2.
  • the catheter extension tube 2 has a first end 21 configured to be fluidly connected with a patient connector (not shown) and a second end 22 opposite to the first end 21.
  • a connector 23 may be provided at the second end 22 and is configured to be fluidly connected with a catheter (not shown) which is to be extended into a peritoneal cavity of a patient.
  • the assistance means 3 is fitted at the catheter extension tube 2 to form the catheter extension 1 such that the catheter extension 1 not only has a basic function of establishing a fluid connection between the peritoneal dialysis bag system and the peritoneal catheter, but also has an additional function of facilitating the dialysis process.
  • the assistance means 3 is integrated with the catheter extension tube 2 as one piece.
  • the catheter extension 1 is configured as one piece such that it can be easily handled in use in the dialysis process.
  • Fig. 2 shows the catheter extension 1 according to an exemplary embodiment of the present invention.
  • the assistance means 3 comprises a detecting means 31 configured to detect at least one parameter related to liquid transferred in the catheter extension tube 2, a control means 32 configured to be communicated with the detecting means 31, and a battery 33 configured to power the detecting means 31 and the control means 32.
  • the assistance means 3 may further comprise a heater (not shown) configured to on-line heat an inflow fluid transferred through the catheter extension tube 2 from the first end 21 to for example a temperature proximate to body temperature of the patient, which will make the patient feel comfortable.
  • the heater can be configured in various manners.
  • the heater can be configured to surround the catheter extension tube 2.
  • the heater can also be powered by the battery 33. More specifically, all electrical components can be powered by the battery 33.
  • the detecting means 31 may comprise a flow meter 311 configured to measure an inflow volume of the liquid flowing through the catheter extension tube 2 and/or an outflow volume of the liquid flowing through the catheter extension tube 2; and a sensing means 312 configured to sense one or more properties of the liquid.
  • the flow meter 311 is configured to determine an ultrafiltration volume based on the inflow volume and the outflow volume.
  • the flow meter 311 can be inserted into the catheter extension tube 2 so that the liquid can flow through the flow meter 311.
  • the sensing means 312 comprises at least one device for detecting temperature, conductivity, particle number and/or turbidity.
  • the sensing means 312 may comprise a temperature sensor for detecting a temperature of the liquid, a conductivity sensor for detecting a conductivity of the liquid, a particle number sensor for detecting the particle number in the liquid and/or a turbidity sensor for detecting a turbidity of the liquid.
  • the sensing means 312 may further any other sensor if necessary.
  • the assistance means 3 further comprises a communication means 34 configured to be communicated with an external device (not shown) .
  • the assistance means 3 in particular the control means 32 can be communicated with the external device to for example transmit the detected parameters from the assistance means 3 to the external device and/or receive a control instruction from the external device, which is very advantageous.
  • the communication means 34 is configured as a wireless communication means, for example a Bluetooth or a near field communication (NFC) means, and/or the external device is a mobile device, for example a mobile phone or smart watch or any other wearable devices.
  • a wireless communication means for example a Bluetooth or a near field communication (NFC) means
  • NFC near field communication
  • the external device is a mobile device, for example a mobile phone or smart watch or any other wearable devices.
  • the assistance means 3 further comprises a display 35 configured to be communicated with the control means 32.
  • the display 35 can show the detected parameters and any other information.
  • the display 35 is configured as a display screen, for example a LCD, in particular a touch screen, or an OLED screen.
  • control means 32 is configured as a mainboard, for example a printed circuit board.
  • the patient does PD exchange several times per day by himself.
  • the PD exchange may not on schedule because the patient may miss it out.
  • the control means 32 is configured to generate a reminder signal at the next treatment to for example remind the patient.
  • the reminder signal can be displayed in the catheter extension and/or the external device, for example the mobile phone. It is very convenient to obtain the reminder signal if being displayed in the external device.
  • the catheter extension 1 further comprises a housing 36 configured to cover a portion of the catheter extension tube 2 and to cover at least a portion of the assistance means 3.
  • the catheter extension 1 further comprises an activation element 37 configured to activate the assistance means 3.
  • the activation element 37 may be configured as a button.
  • the catheter extension 1 is configured to be able to activate the assistance means 3 automatically when for example rotating the catheter extension 1.
  • the present invention also relates to a method for operating the catheter extension 1, at least comprising steps of activating the assistance means 3 and executing operations for facilitating the dialysis process by the assistance means 3.
  • the assistance means 3 can be activated manually for example by operating the activation element 37 or be activated automatically by a specific operation, for example when rotating the catheter extension 1 as described above.
  • the method further comprises steps of detecting at least one parameter related to the liquid transferred in the catheter extension tube 2, and displaying the at least one parameter.
  • the method further comprises steps of synchronizing a timing of the external device to the assistance means 3; and/or setting the next treatment on the assistance means 3 and/or the external device.
  • the method further comprises a step of generating a reminder signal when the next treatment is to be proceeded.
  • the method further comprise steps of identifying a code of a peritoneal dialysis bag, and/or comparing the code to a preset prescription to verify a correct treatment, and/or restoring the code in the control means or external device. In this way, the correct treatment can be achieved reliably.
  • the catheter extension 1 may be regarded as a smart PD catheter extension tube which include but not limited to the above functions, such as ultrafiltration volume measurement, PD solution temperature monitoring and PD exchange schedule reminder.

Abstract

A catheter extension (1) for a peritoneal dialysis comprises: a catheter extension tube (2) configured to fluidly connect a peritoneal dialysis bag system to a peritoneal catheter; and an assistance means (3) configured to facilitate a dialysis process to be executed by means of the catheter extension tube (2); wherein the assistance means (3) is configured to be fitted at the catheter extension tube (2). The catheter extension (1) not only can achieve a basic function of establishing a fluid connection between the peritoneal dialysis bag system and the peritoneal catheter, but also achieve an additional function of facilitating the dialysis process.

Description

Catheter Extension for Peritoneal Dialysis and Method for Operating Catheter Extension Technical Field
The invention relates to a catheter extension for a peritoneal dialysis (PD) and a method for operating the catheter extension.
Background Art
A peritoneal dialysis (PD) is a procedure for removing toxic substances and metabolites normally removed by the kidneys, and for aiding in regulation of fluid and electrolyte balance. The procedure is accomplished by infusing PD solution through a conduit into the peritoneal cavity. Osmosis and diffusion occur across the peritoneal membrane between plasma of the patient and the solution.
A continuous ambulatory peritoneal dialysis is one form of PD that allows the patient to exchange the PD solutions 3-4 times per day. CAPD usually uses a double-bag system (one bag for the solution and a separate empty bag for the patient’s effluent) . The double-bag system provides a new solution bag and a new drainage bag for each treatment or exchange.
In addition, CAPD can also use a single-bag system, wherein only a solution bag is provided. The patient usually uses a used empty solution bag from a previous treatment or exchange as the drainage bag of a subsequent treatment or exchange.
An automatic peritoneal dialysis (APD) is another form of PD which is achieved by an automatic peritoneal dialysis machine.
For both CAPD (regardless of the double-bag system and the single-bag system) and APD, a catheter extension is usually needed to connect a catheter to be extended into the peritoneal cavity of the patient with a patient connector to be connected with a peritoneal dialysis bag system. During the dialysis process, the fresh PD solution flows from the peritoneal dialysis bag system into the peritoneal cavity of the patient through the catheter extension. After a prescribed period of time, a fluid with filtered waste products flows out of the peritoneal cavity through the catheter extension again and discarded.
In order to reliably and conveniently execute the peritoneal dialysis, some parameters and/or operations may be needed to be monitored or performed. Furthermore, further data management is also desired to facilitate the patient and the related persons with the progress of technology.
Therefore, there is a need to further improve the known catheter extension used for the PD.
Summary of the Invention
In view of the problems existing in the prior art, an object of the invention is to provide an improved catheter extension for a peritoneal dialysis and a corresponding operating method.
For achieving this object, in one aspect, provided is a catheter extension for a peritoneal dialysis, comprising: a catheter extension tube configured to fluidly connect a peritoneal dialysis bag system to a peritoneal catheter; and an assistance means configured to facilitate a dialysis process to be executed by means of the catheter extension tube; wherein the assistance means is configured to be fitted at the catheter extension tube.
According to an optional embodiment, the assistance means is integrated with the catheter extension tube as one piece.
According to an optional embodiment, the assistance means comprises: a detecting means configured to detect at least one parameter related to liquid transferred in the catheter extension tube; and/or a control means configured to be communicated with the detecting means; and/or a heater configured to on-line heat an inflow fluid; and/or a battery configured to power the detecting means, and the control means and the heater.
According to an optional embodiment, the detecting means comprises at least one of: a flow meter configured to measure an inflow volume of the liquid flowing through the catheter extension tube and/or an outflow volume of the liquid flowing through the catheter extension tube; and a sensing means configured to sense one or more properties of the liquid.
According to an optional embodiment, the flow meter is configured to determine an ultrafiltration volume based on the inflow volume and the outflow volume; and/or the sensing means comprises at least one device for detecting temperature, conductivity, particle number and/or turbidity.
According to an optional embodiment, the assistance means further comprises a communication means configured to be communicated with an external device, and/or a display configured to be communicated with the control means.
According to an optional embodiment, the communication means is configured as a wireless communication means; and/or the display is configured as a display screen;  and/or the external device is a mobile device.
According to an optional embodiment, the wireless communication means is a Bluetooth or NFC means; and/or the display screen is a LCD or OLED screen; and/or the mobile device is a mobile phone or smart watch.
According to an optional embodiment, the control means is configured as a mainboard and/or is configured to generate a reminder signal at the next treatment; and/or the reminder signal is displayed in the catheter extension and/or the external device.
According to an optional embodiment, the catheter extension further comprises a housing configured to cover a portion of the catheter extension tube and to cover at least a portion of the assistance means, and/or an activation element configured to activate the assistance means; and/or the catheter extension is configured to activate the assistance means automatically when rotating the catheter extension.
In another aspect, provided is a method for operating the above catheter extension, comprising the following steps: activating the assistance means; and executing operations for facilitating the dialysis process by the assistance means.
According to an optional embodiment, the method further comprises: detecting at least one parameter related to the liquid transferred in the catheter extension tube; and displaying the at least one parameter.
According to an optional embodiment, the parameter is used to calculate an ultrafiltration volume.
According to an optional embodiment, the method further comprises: synchronizing a timing of an external device to the assistance means; and/or setting the next treatment on the assistance means and/or the external device.
According to an optional embodiment, the method further comprises: generating a reminder signal when the next treatment is to be proceeded.
According to an optional embodiment, the method further comprises: identifying a code of a peritoneal dialysis bag; and/or comparing the code to a preset prescription to verify a correct treatment; and/or restoring the code in the control means or external device.
According to the present invention, the catheter extension not only can achieve a basic function of establishing a fluid connection between the peritoneal dialysis bag system and the peritoneal catheter, but also achieve an additional function of facilitating the dialysis process.
Brief Description of the Drawings
The invention and advantages thereof will be further understood by reading the following detailed description of some preferred exemplary embodiments with reference to the drawings in which:
Fig. 1 schematically shows a catheter extension for a peritoneal dialysis.
Fig. 2 shows the catheter extension according to an exemplary embodiment of the present invention.
Detailed Description of Preferred Embodiments
Some exemplary embodiments of the present invention will be described hereinafter in more details with reference to the drawings to better understand the basic concept of the invention.
Fig. 1 schematically shows a catheter extension 1 for a peritoneal dialysis, mainly comprising: a catheter extension tube 2 configured to fluidly connect a peritoneal dialysis bag system (not shown) to a peritoneal catheter (not shown) ; and an assistance means 3, in particular an electrical assistance means, configured to facilitate a dialysis process to be executed by means of the catheter extension tube 2; wherein the assistance means 3 is configured to be fitted at the catheter extension tube 2.
As shown in Fig. 1, the catheter extension tube 2 has a first end 21 configured to be fluidly connected with a patient connector (not shown) and a second end 22 opposite to the first end 21. A connector 23 may be provided at the second end 22 and is configured to be fluidly connected with a catheter (not shown) which is to be extended into a peritoneal cavity of a patient.
As also can be seen from Fig. 1, the assistance means 3 is fitted at the catheter extension tube 2 to form the catheter extension 1 such that the catheter extension 1 not only has a basic function of establishing a fluid connection between the peritoneal dialysis bag system and the peritoneal catheter, but also has an additional function of facilitating the dialysis process.
According to one exemplary embodiment of the present invention, the assistance means 3 is integrated with the catheter extension tube 2 as one piece. The catheter extension 1 is configured as one piece such that it can be easily handled in use in the dialysis process.
Fig. 2 shows the catheter extension 1 according to an exemplary embodiment of the present invention.
As shown in Fig. 2, the assistance means 3 comprises a detecting means 31 configured to detect at least one parameter related to liquid transferred in the catheter extension tube 2, a control means 32 configured to be communicated with the detecting means 31, and a battery 33 configured to power the detecting means 31 and the control means 32.
According to one exemplary embodiment of the present invention, the assistance means 3 may further comprise a heater (not shown) configured to on-line heat an inflow fluid transferred through the catheter extension tube 2 from the first end 21 to for example a temperature proximate to body temperature of the patient, which will make the patient feel comfortable. The heater can be configured in various manners. For example, the heater can be configured to surround the catheter extension tube 2. The heater can also be powered by the battery 33. More specifically, all electrical components can be powered by the battery 33.
According to one exemplary embodiment of the present invention, the detecting means 31 may comprise a flow meter 311 configured to measure an inflow volume of the liquid flowing through the catheter extension tube 2 and/or an outflow volume of the liquid flowing through the catheter extension tube 2; and a sensing means 312 configured to sense one or more properties of the liquid.
According to one exemplary embodiment of the present invention, the flow meter 311 is configured to determine an ultrafiltration volume based on the inflow volume and the outflow volume.
According to one exemplary embodiment of the present invention, the flow meter 311 can be inserted into the catheter extension tube 2 so that the liquid can flow through the flow meter 311.
According to one exemplary embodiment of the present invention, the sensing means 312 comprises at least one device for detecting temperature, conductivity, particle number and/or turbidity. For example, the sensing means 312 may comprise a temperature sensor for detecting a temperature of the liquid, a conductivity sensor for detecting a conductivity of the liquid, a particle number sensor for detecting the particle number in the liquid and/or a turbidity sensor for detecting a turbidity of the liquid.
It may be understood by the skilled person in the art that the sensing means 312 may further any other sensor if necessary.
According to one exemplary embodiment of the present invention, the assistance means 3 further comprises a communication means 34 configured to be  communicated with an external device (not shown) . By the communication means 34, the assistance means 3, in particular the control means 32 can be communicated with the external device to for example transmit the detected parameters from the assistance means 3 to the external device and/or receive a control instruction from the external device, which is very advantageous.
Preferably, the communication means 34 is configured as a wireless communication means, for example a Bluetooth or a near field communication (NFC) means, and/or the external device is a mobile device, for example a mobile phone or smart watch or any other wearable devices.
According to one exemplary embodiment of the present invention, the assistance means 3 further comprises a display 35 configured to be communicated with the control means 32. The display 35 can show the detected parameters and any other information.
Preferably, the display 35 is configured as a display screen, for example a LCD, in particular a touch screen, or an OLED screen.
According to one exemplary embodiment of the present invention, the control means 32 is configured as a mainboard, for example a printed circuit board.
According to prescribed period of time, the patient does PD exchange several times per day by himself. However, the PD exchange may not on schedule because the patient may miss it out.
Thus, according to one exemplary embodiment of the present invention, the control means 32 is configured to generate a reminder signal at the next treatment to for example remind the patient. It may be understood by the skilled person in the art that the reminder signal can be displayed in the catheter extension and/or the external device, for example the mobile phone. It is very convenient to obtain the reminder signal if being displayed in the external device.
According to one exemplary embodiment of the present invention, the catheter extension 1 further comprises a housing 36 configured to cover a portion of the catheter extension tube 2 and to cover at least a portion of the assistance means 3.
According to one exemplary embodiment of the present invention, the catheter extension 1 further comprises an activation element 37 configured to activate the assistance means 3. Preferably, the activation element 37 may be configured as a button.
According to one exemplary embodiment of the present invention, the catheter  extension 1 is configured to be able to activate the assistance means 3 automatically when for example rotating the catheter extension 1.
Further, the present invention also relates to a method for operating the catheter extension 1, at least comprising steps of activating the assistance means 3 and executing operations for facilitating the dialysis process by the assistance means 3.
It may be understood by the skilled person in the art that the assistance means 3 can be activated manually for example by operating the activation element 37 or be activated automatically by a specific operation, for example when rotating the catheter extension 1 as described above.
According to an exemplary embodiment of the present invention, the method further comprises steps of detecting at least one parameter related to the liquid transferred in the catheter extension tube 2, and displaying the at least one parameter.
According to an exemplary embodiment of the present invention, the method further comprises steps of synchronizing a timing of the external device to the assistance means 3; and/or setting the next treatment on the assistance means 3 and/or the external device.
According to an exemplary embodiment of the present invention, the method further comprises a step of generating a reminder signal when the next treatment is to be proceeded.
According to an exemplary embodiment of the present invention, the method further comprise steps of identifying a code of a peritoneal dialysis bag, and/or comparing the code to a preset prescription to verify a correct treatment, and/or restoring the code in the control means or external device. In this way, the correct treatment can be achieved reliably.
As can be seen from the above, the catheter extension 1 may be regarded as a smart PD catheter extension tube which include but not limited to the above functions, such as ultrafiltration volume measurement, PD solution temperature monitoring and PD exchange schedule reminder.
While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. The attached claims and their equivalents are intended to cover all the modifications, substitutions and changes as would fall within the scope and spirit of the invention.

Claims (16)

  1. A catheter extension (1) for a peritoneal dialysis, comprising:
    a catheter extension tube (2) configured to fluidly connect a peritoneal dialysis bag system to a peritoneal catheter; and
    an assistance means (3) configured to facilitate a dialysis process to be executed by means of the catheter extension tube (2) ;
    wherein the assistance means (3) is configured to be fitted at the catheter extension tube (2) .
  2. The catheter extension (1) according to claim 1, wherein the assistance means (3) is integrated with the catheter extension tube (2) as one piece.
  3. The catheter extension (1) according to claim 1 or 2, wherein the assistance means (3) comprises:
    a detecting means (31) configured to detect at least one parameter related to liquid transferred in the catheter extension tube (2) ; and/or
    a control means (32) configured to be communicated with the detecting means (31) ; and/or
    a heater configured to on-line heat an inflow fluid; and/or
    a battery (33) configured to power the detecting means (31) , and the control means (32) and the heater.
  4. The catheter extension (1) according to claim 3, wherein the detecting means (31) comprises at least one of:
    a flow meter (311) configured to measure an inflow volume of the liquid flowing through the catheter extension tube (2) and/or an outflow volume of the liquid flowing through the catheter extension tube (2) ; and
    a sensing means (312) configured to sense one or more properties of the liquid.
  5. The catheter extension (1) according to claim 4, wherein
    the flow meter (311) is configured to determine an ultrafiltration volume based on the inflow volume and the outflow volume; and/or
    the sensing means (312) comprises at least one device for detecting temperature, conductivity, particle number and/or turbidity.
  6. The catheter extension (1) according to any one of claims 3-5, wherein the  assistance means (3) further comprises a communication means (34) configured to be communicated with an external device, and/or a display (35) configured to be communicated with the control means (32) .
  7. The catheter extension (1) according to claim 6, wherein
    the communication means (34) is configured as a wireless communication means; and/or
    the display (35) is configured as a display screen; and/or
    the external device is a mobile device.
  8. The catheter extension (1) according to claim 7, wherein
    the wireless communication means is a Bluetooth or NFC means; and/or
    the display screen is a LCD or OLED screen; and/or
    the mobile device is a mobile phone or smart watch.
  9. The catheter extension (1) according to any one of claims 3-8, wherein the control means (32) is configured as a mainboard and/or is configured to generate a reminder signal at the next treatment; and/or
    the reminder signal is displayed in the catheter extension (1) and/or the external device.
  10. The catheter extension (1) according to any one of claims 1-9, wherein
    the catheter extension (1) further comprises a housing (36) configured to cover a portion of the catheter extension tube (2) and to cover at least a portion of the assistance means (3) , and/or an activation element (37) configured to activate the assistance means (3) ; and/or
    the catheter extension (1) is configured to activate the assistance means (3) automatically when rotating the catheter extension (1) .
  11. A method for operating the catheter extension (1) according to any one of claims 1-10, the method at least comprising the following steps:
    activating the assistance means (3) ; and
    executing operations for facilitating the dialysis process by the assistance means (3) .
  12. The method according to claim 11, wherein the method further comprises:
    detecting at least one parameter related to the liquid transferred in the catheter  extension tube (2) ; and
    displaying the at least one parameter.
  13. The method according to claim 12, wherein the parameter is used to calculate an ultrafiltration volume.
  14. The method according to any one of claims 11-13, wherein the method further comprises:
    synchronizing a timing of an external device to the assistance means (3) ; and/or
    setting the next treatment on the assistance means (3) and/or the external device.
  15. The method according to any one of claims 11-14, wherein the method further comprises:
    generating a reminder signal when the next treatment is to be proceeded.
  16. The method according to any one of claims 11-15, wherein the method further comprises:
    identifying a code of a peritoneal dialysis bag; and/or
    comparing the code to a preset prescription to verify a correct treatment; and/or
    restoring the code in the control means (32) or external device.
PCT/CN2019/094592 2019-07-03 2019-07-03 Catheter extension for peritoneal dialysis and method for operating catheter extension WO2021000296A1 (en)

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CN201980098946.7A CN114206412A (en) 2019-07-03 2019-07-03 Catheter extension device for peritoneal dialysis and method for operating a catheter extension device

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202654460U (en) * 2012-04-26 2013-01-09 钟慧 Peritoneal dialysis device
CN104666080A (en) * 2015-03-11 2015-06-03 北京奥星医药耗材有限公司 Sealed type peritoneal dialysis solution double-bag system
CN107596470A (en) * 2016-07-12 2018-01-19 庄尚娟 A kind of peritoneal dialysis transfusion device
CN207941065U (en) * 2018-01-16 2018-10-09 赵科茗 A kind of peritoneal dialysis drainage device
US20180289536A1 (en) * 2007-04-05 2018-10-11 Daniel R. BURNETT Device and method for safe access and automated therapy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180289536A1 (en) * 2007-04-05 2018-10-11 Daniel R. BURNETT Device and method for safe access and automated therapy
CN202654460U (en) * 2012-04-26 2013-01-09 钟慧 Peritoneal dialysis device
CN104666080A (en) * 2015-03-11 2015-06-03 北京奥星医药耗材有限公司 Sealed type peritoneal dialysis solution double-bag system
CN107596470A (en) * 2016-07-12 2018-01-19 庄尚娟 A kind of peritoneal dialysis transfusion device
CN207941065U (en) * 2018-01-16 2018-10-09 赵科茗 A kind of peritoneal dialysis drainage device

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