Medical Device News Magazine

Sunday, May 22, 2022

Ph: 561.316.3330


Press Releases









Market Reports





Non Profits



Biotechnology News Magazine

Okayama University Research: New Device for Assisting Accurate Hemodialysis Catheter Placement

- Advertisement -

August 10, 2018

Researchers at Okayama University report in The Journal of Vascular Access a supporting device for accurately placing a hemodialysis catheter on kidney patients. The device was successfully used on a group of 10 patients and is expected to become an essential tool in situations where other, catheter-free hemodialysis approaches are not possible.

Patients with improperly functioning kidneys often need to undergo hemodialysis – the procedure of purifying blood in an artificial kidney outside the body – on a regular basis. Hemodialysis requires access to blood vessels, for the collection of blood and its re-introduction after purification. In this context, vascular access is commonly achieved with a so-called tunneled cuffed catheter (TCC). Accurate TCC placement is important; incorrect positioning can lead to blood clots and induce central vein thrombosis. Assistant Professor Toshiaki Ohara from Okayama University and colleagues have now developed a device enabling accurate TCC placement. The researchers’ insertion support device accommodates for individual body shape differences and is expected to decrease the rate of TCC replacements – typically ranging between 8.9% and 56%.

The device was made from a material called expanded polytetrafluoroethylene (ePTFE), having the property of maintained plasticity. It can be described as a bendable ribbon with holes (eyelets) spaced 1 cm apart; the holes allow making markings on the patient’s body with a felt-tip pen.

The insertion support device was tested on 10 Japanese adult hemodialysis patients (6 men and 4 women with a mean age of 71.3 years) treated at Shigei Medical Research Hospital. Placement of the device on the body took place with the help of X-ray imaging: the tip of the device, for marking the TCC entry site, was laid so that it overlaps with the right heart border. With the help of the markings made on the patient’s body, the physician could insert the TCC within an error of about 1 cm. The patients were observed for 2 months, during which there was no catheter replacement needed.

The device of Dr. Ohara and colleagues helps to reduce catheter waste and the overall cost of hemodialysis. In addition, as the attachment of a catheter requires exposure to X-rays, it reduces accumulated radiation doses for both patients and physicians. Although the study was only carried out for 10 patients in a short observation period, the scientists ‘anticipate that this new device can be used for catheter intervention in many fields’.


Toshiaki Ohara, Kazufumi Sakurama, Satoshi Hiramatsu, Toshimasa Karai, Toshiaki Sato, Yuta Nishina. New insertion support device assisted the accurate placement of tunnelled cuffed catheter: first experience of 10 cases. The journal of vascular access, 2018 May 1:1129729818771884.

DOI: 10.1177/1129729818771884.

(Okayama University e-Bulletin & OU-MRU): Assistant Professor Oharas team

OU-MRU Vol.22:Medical supportive device for hemodialysis catheter puncture

OU-MRU Vol.50:Iron removal as a potential cancer therapy


Okayama Univ. e-Bulletin:

About Okayama University (YouTube):

Okayama University Image Movie (YouTube):

Okayama University Medical Research Updates OU-MRU

Vol.1:Innovative non-invasive ‘liquid biopsy’ method to capture circulating tumor cells from blood samples for genetic testing

Vol.2:Ensuring a cool recovery from cardiac arrest

Vol.3:Organ regeneration research leaps forward

Vol.4:Cardiac mechanosensitive integrator

Vol.5:Cell injections get to the heart of congenital defects

Vol.6:Fourth key molecule identified in bone development

Vol.7:Anticancer virus solution provides an alternative to surgery

Vol.8:Light-responsive dye stimulates sight in genetically blind patients

Vol.9:Diabetes drug helps towards immunity against cancer

Vol.10:Enzyme-inhibitors treat drug-resistant epilepsy

Vol.11:Compound-protein combination shows promise for arthritis treatment

Vol.12:Molecular features of the circadian clock system in fruit flies

Vol.13:Peptide directs artificial tissue growth

Vol.14:Simplified boron compound may treat brain tumours

Vol.15:Metamaterial absorbers for infrared inspection technologies

Vol.16:Epigenetics research traces how crickets restore lost limbs

Vol.17:Cell research shows pathway for suppressing hepatitis B virus

Vol.18:Therapeutic protein targets liver disease

Vol.19:Study links signalling protein to osteoarthritis

Vol.20:Lack of enzyme promotes fatty liver disease in thin patients

Vol.21:Combined gene transduction and light therapy targets gastric cancer

Vol.22:Medical supportive device for hemodialysis catheter puncture

Vol.23:Development of low cost oral inactivated vaccines for dysentery

Vol.24:Sticky molecules to tackle obesity and diabetes

Vol.25:Self-administered aroma foot massage may reduce symptoms of anxiety

Vol.26:Protein for preventing heart failure

Vol.27:Keeping cells in shape to fight sepsis

Vol.28:Viral-based therapy for bone cancer

Vol.29:Photoreactive compound allows protein synthesis control with light

Vol.30:Cancer stem cells’ role in tumor growth revealed

Vol.31:Prevention of RNA virus replication

Vol.32:Enzyme target for slowing bladder cancer invasion

Vol.33:Attacking tumors from the inside

Vol.34:Novel mouse model for studying pancreatic cancer

Vol.35:Potential cause of Lafora disease revealed

Vol.36:Overloading of protein localization triggers cellular defects

Vol.37:Protein dosage compensation mechanism unravelled

Vol.38:Bioengineered tooth restoration in a large mammal

Vol.39:Successful test of retinal prosthesis implanted in rats

Vol.40:Antibodies prolong seizure latency in epileptic mice

Vol.41:Inorganic biomaterials for soft-tissue adhesion

Vol.42:Potential drug for treating chronic pain with few side effects

Vol.43:Potential origin of cancer-associated cells revealed

Vol.44:Protection from plant extracts

Vol.45:Link between biological-clock disturbance and brain dysfunction uncovered

Vol.46:New method for suppressing lung cancer oncogene

Vol.47:Candidate genes for eye misalignment identified

Vol.48:Nanotechnology-based approach to cancer virotherapy

Vol.49:Cell membrane as material for bone formation

Vol.50:Iron removal as a potential cancer therapy

Vol.51:Potential of 3D nanoenvironments for experimental cancer

Vol.52:A protein found on the surface of cells plays an integral role in tumor growth and sustenance

Vol.53:Successful implantation and testing of retinal prosthesis in monkey eyes with retinal degeneration

Vol.54:Measuring ion concentration in solutions for clinical and environmental research

Vol.55:Diabetic kidney disease: new biomarkers improve the prediction of the renal prognosis

Medical Device News Magazine
Medical Device News Magazine is a division of PTM Healthcare Marketing, Inc. Pauline T. Mayer is the managing editor.

Other News of Interest

Executives on the Move

By using this website you agree to accept Medical Device News Magazine Privacy Policy