Related Experiment Video
Updated: Jun 5, 2026
06:27
A Retrograde Implantation Approach for Peritoneal Dialysis Catheter Placement in Mice
Published on: July 20, 2022
The path to wearable ultrafiltration and dialysis devices
Edward F Leonard1, Stanley Cortell, James Jones
1Artificial Organs Research Laboratory, Department of Chemical Engineering, Columbia University, 500 West 120 Street, New York, NY 10027, USA. leonard@columbia.edu
Blood Purification
|January 14, 2011
Summary
Wearable blood processing devices could revolutionize kidney disease treatment by enabling ambulatory therapy. This paper outlines the medical, technological, and economic considerations for developing patient-friendly, first-generation devices.
Area of Science:
- Biomedical Engineering
- Nephrology
- Medical Device Development
Background:
- Current end-stage renal disease therapies are clinic-based and intermittent.
- Significant challenges exist in transitioning patients to ambulatory care.
- Wearable blood processing offers a potential alternative to traditional hemodialysis.
Purpose of the Study:
- To enumerate the requirements for transitioning end-stage renal disease patients to ambulatory therapy.
- To define the capabilities of a first-generation wearable blood processing device.
- To identify key considerations for patient acceptance and device manageability.
Main Methods:
- Identification of medical, technological, and economic issues.
- Analysis of safety requirements for wearable devices.
- Evaluation of patient-centric design principles.
Main Results:
- A framework for developing wearable blood processing devices is proposed.
- Key safety, usability, and economic factors are identified.
- The potential for a first-generation device to address current therapy limitations is explored.
Conclusions:
- Wearable blood processing devices hold promise for improving end-stage renal disease management.
- Addressing medical, technological, economic, and patient factors is crucial for successful implementation.
- Further research and development are needed to realize the potential of ambulatory renal replacement therapy.
Related Concept Videos
01:15Dialysis
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
01:27Dialysis
Renal failure occurs when the kidneys lose their ability to filter waste products from the blood effectively. It can be classified into two types: acute renal failure (ARF) and chronic renal failure (CRF).
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
01:25Hemodialysis I: Introduction
Hemodialysis (HD) is a medical treatment that artificially removes waste products, excess fluids, and toxins from the blood when the kidneys are no longer able to perform these functions effectively. In this process, blood is filtered through a semipermeable membrane, allowing for the selective removal of waste while preserving necessary components like blood cells and proteins. Hemodialysis is typically performed in patients with end-stage renal disease (ESRD) or severe kidney...
01:24Hemodialysis II: Procedure and Complications
DialyzersA hemodialysis (HD) dialyzer is a plastic cartridge containing thousands of parallel hollow fibers, which serve as semipermeable membranes. These fibers are typically made from cellulose-based or other synthetic materials. During HD, blood is pumped into the top of the cartridge and distributed among these fibers. Simultaneously, dialysis fluid, known as dialysate, is introduced into the bottom of the cartridge, bathing the outside of the fibers. Across the semipermeable membrane,...
01:30Extracorporeal Removal of Drugs: Peritoneal Dialysis and Hemodialysis
Patients with end-stage renal disease (ESRD) or those experiencing drug overdose often require extracorporeal methods to eliminate accumulated drugs and metabolites. Hemoperfusion, hemofiltration, and dialysis are the primary techniques to rapidly remove harmful substances without disrupting the patient's fluid and electrolyte balance. For those with compromised renal function, dosage adjustments of concurrent medications may be necessary during extracorporeal drug removal.Dialysis is a process...
01:26Extracorporeal Removal of Drugs: Continuous Renal Replacement Therapy
Continuous Renal Replacement Therapy (CRRT) is an essential intervention for patients experiencing severe kidney dysfunction. This therapy offers a continuous mechanism for removing fluids and toxins from the bloodstream, leveraging the patient’s blood pressure to facilitate filtration through a specialized filter. This method contrasts with intermittent dialysis, providing a gentler and more consistent removal of waste products and excess fluid, which is particularly beneficial in critically...