Accessories, blood circuit, hemodialysis: medical device reports filed with FDA

1,221 reports carry this product code, 1994–2026; 11 brands with a page.

Read first · FDA's statement on these data

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product. openFDA, FDA

FDA adds: "Although MDRs are a valuable source of information, this passive surveillance system has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data. In addition, the incidence or prevalence of an event cannot be determined from this reporting system alone due to potential under-reporting of events and lack of information about frequency of device use." And: "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices."

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

1,221
reports with this product code: 0% of all MAUDE reports; 48
reports, 12 months to August 2026: 32 in the 12 months before; 88.9%
classified as malfunction: 62.3% across all reports; 1.4%
classified as death, as reported: 0.9% across all reports

Product code KOC is FDA's classification for "Accessories, blood circuit, hemodialysis" (gastroenterology, Urology panel), a class 2 device. 1,221 medical device reports carry this product code, 0% of the MAUDE database, from February 1994 to August 2026.

48 reports arrived in the 12 months to August 2026, up 50% from 32 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (88.9%), injury (8.4%) and death (1.4%). 11 brand names with a page on this site carry this code; the brands table is ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Brands with this product code

Brand	Reports	Latest 12 months	Classified as death	Classified as malfunction
Crit-Line Blood Chamber	625	0	0%	98.7%
Combiset Bloodline	26	677	0%	98.8%
Fresenius	6	0	6.1%	13.7%
Custom Combi Set	2	15	3.8%	87.1%
Medisystems Hemodialysis Blood Tubing Set	2	0	5.7%	20.6%
Bardex Lubricath Foley Catheter	1	653	0%	92.3%
Combi Set	1	0	3.4%	93.2%
Magic3 Intermittent Catheter with Sure-Grip Sleeve	1	22	0%	86.7%
NxStage System One	1	120	5.7%	21.2%
Prismaflex	1	4	7.7%	56.9%
Rochester Magic3 Coude Hydrophlic 14fr Male 30bx	1	0	0%	96.7%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Manufacturers named

Manufacturer (as written on reports)	Reports	Share
Fresenius Medical Care North America	614	50.3%
Erika De Reynosa De C V	205	16.8%
Reynosa Manufacturing	110	9%
Concord Manufacturing	57	4.7%
Horizon Medical Products	15	1.2%
Coopersurgical	7	0.6%
Fresenius USA	4	0.3%
Medcomp	4	0.3%
Nxstage Medical	3	0.2%

Reports by month, five years

FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

Event type and report source

Event type

Death1.4%17

Injury8.4%102

Malfunction88.9%1,086

Other1.1%13

Not given0.2%3

Who filed

Manufacturer report94.5%1,154

Voluntary report1.5%18

User facility report0%0

Distributor report1.4%17

Not given2.6%32

Grey bar: all 26,136,888 MAUDE reports.

Device problems coded

Device problem (FDA code)	Reports	Share
Fluid/blood leak	890	72.9%
Leak/splashthe device leaked	54	4.4%
Disconnection	50	4.1%
Material separation	31	2.5%
Thermal decomposition of device	28	2.3%
Crackthe device cracked	22	1.8%
Explanted	18	1.5%
Replace	17	1.4%
Smoking	16	1.3%
Nonstandard device	13	1.1%
Hole in material	12	1%
Tears, rips, holes in device, device material	12	1%
Air leak	11	0.9%
Fire	8	0.7%
Loose or intermittent connection	8	0.7%
Difficult to removethe device was hard to remove	7	0.6%
Overheating of device	7	0.6%
Patient device interaction problem	7	0.6%
Detachment of device component	6	0.5%
High flux rate	6	0.5%

Questions about accessories, blood circuit, hemodialysis reports

What is product code KOC?

FDA's classification code for "Accessories, blood circuit, hemodialysis", class 2, reviewed by the gastroenterology, Urology panel. Every device report carries the product code of the device involved.

How many reports carry this code?

1,221 reports through August 2026, 48 of them in the latest 12 months.

Which brands appear most often?

Crit-Line Blood Chamber (625), Combiset Bloodline (26), Fresenius (6), Custom Combi Set (2) and Medisystems Hemodialysis Blood Tubing Set (2). Widely used products collect more reports because more people use them.

Can the brands table be used to rank the devices?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." Brands differ in how many are in use, how long they have been sold and how reports are collected.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.