Do I need to clean and check it every time? | The maker says yes [OK Prostate Chip]

This page is based on entries from "ok-lab's diary" (https://ok-lab.hatenablog.com/), the Japanese development diary written by Mr. Okada, founder of OK Lab, a small company in Japan (Okada Comfortable Life Laboratory). Only the entries about "cleaning before each use and checking for damage" are summarized here, in order of publication. Past prices and sizes are as written at the time. Current prices come from the official product list (retrieved September 4, 2026). Quotations are translated from Japanese.

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Note: This page is a personal reading log by someone with no connection to the maker or the seller. It reflects the source entries as of their publication dates and makes no guarantee of accuracy or safety. The product is not a medical device; talk to a doctor about any health decision. Check the official site for current information. This page contains advertising.

In short

• Cleaning lapses and cracks appear in the diary, but their suspected causes are not always established.
• The maker calls for disinfection every time, damage checks, and attention to thread condition.
• Current listings include relevant models, while these cleaning and inspection records end in February 2022.

If you see blood in your urine, even a small amount or for the first time, do not wait and see. See a urologist right away. If you suddenly cannot urinate, or the device cannot be removed, do not try to fix it yourself. Go to a medical facility, including emergency care, immediately.

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About this product

The OK Prostate Chip is a small device that is placed in the urethra (the urine passage) so that it acts on the prostate; the maker sells it in several shapes, sizes and materials. It is made and sold by OK Lab (Okada Comfortable Life Laboratory), a small company in Japan, through its own online store, and prices are in Japanese yen (JPY). The maker's development diary, "ok-lab's diary", is written in Japanese. This page is an English summary of it, and every quotation is translated. OK Lab ships internationally, so readers outside Japan can order (see "Buying from outside Japan" below). Product names on this page are plain-English descriptions. The official Japanese product name is shown once in the product table so you can find the same item in the store.

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Before you read: key terms

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What happens: chip cleaning and inspection

The OK Prostate Chip is a small urethral device that the maker describes as acting on the prostate. Here, cleaning concerns contamination, while inspection concerns cracks, surface damage, dirt, and thread condition. Those checks involve the chip, its retrieval thread (the attached thread for retrieving it), and electrical connections on vibrating models. The diary relates these concerns to a device worn inside the urine passage, including cases where problems became apparent only afterward.

Missed chip cleaning was one suspected cause during stopper testing

In an entry published in June 2018, Mr. Okada suspected missed disinfection after developing inflammation of the urine passage during testing. The test involved a three-hole stopper chip (an additional chip intended to limit movement), measuring 17mm long and 9mm wide. According to his account, a doctor suggested excessive stopper size as another possible cause.

Mr. Okada noted that the stopper could lie across its thread and announced a shorter design, about 10mm long. The entry does not establish which suspected cause was responsible or describe the shorter design's subsequent results. Mr. Okada emphasized disinfection every time because this stopper had holes.

(Source: ok-lab's diary, published June 2018)
https://ok-lab.hatenablog.com/entry/20180630/1530342059

Chip inspection revealed an uneven crack after prolonged wear

In an entry published in September 2018, a customer reported a central crack after roughly one week of continuous wear. The glass awakening chip had an offset of about 0.2mm at the crack. The customer described repeated shallow scratches inside the urine passage without bleeding and suspected a previously hidden crack had become exposed.

After changing chips, the customer reported that stinging had stopped about 2 days later. The account does not establish when the crack first formed. Mr. Okada cautioned that he had no certain way to prevent delayed cracking.

(Source: ok-lab's diary, published September 2018)
https://ok-lab.hatenablog.com/entry/20180922/1537592180

Chip inspection also exposed delayed cracking in Mr. Okada's glass prototype

The same September 2018 entry described Mr. Okada's separate experiment with a glass prototype for anal use. He reported finding a crack about one week after it had seemed trouble-free during use. His prototype had not undergone the slow cooling used for the company's glass urethral chips.

Mr. Okada explained that this manufacturing step was intended to reduce strain inside the glass. He said he would abandon glass for that project for anal use. He advised inspection before every use of glass chips and no use of any chip with a crack.

(Source: ok-lab's diary, published September 2018)
https://ok-lab.hatenablog.com/entry/20180922/1537592180

Missed chip cleaning preceded chills, but Mr. Okada could not confirm why

In an entry published in February 2022, Mr. Okada described chills after a chip had touched a toilet. He wrote that he had used it again after only a water rinse, without repeating disinfection. He recorded 36.8°C, which he considered a slight fever compared with his usual 36.0°C.

He suspected inflammation of the urine passage, but reported no discomfort there and acknowledged that the fever might have another cause. His trial paused for 3 days; he reported no further problem 2 days after it resumed. Mr. Okada described the missed disinfection as an avoidable mistake.

(Source: ok-lab's diary, published February 2022)
https://ok-lab.hatenablog.com/entry/2022/02/19/123621

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The maker's answer to chip cleaning and inspection

The maker's guidance broadened to cover the chip's surface, thread condition, contact hygiene, and possible damage from heat.

Chip inspection in the manual covered surface damage and thread strength

In an entry published in July 2021, Mr. Okada shared a manual covering the chip's surface and its retrieval thread. Its checklist included scratches, dirt, and whether the thread remained strong enough. The manual attributed thread failure to excessive use or unnoticed damage from something sharp.

For the longer wear it discussed, the manual included checks of both parts at least once a week. It also mentioned earlier thread replacement as a precaution against breakage. The manual's advice treated the thread's condition as part of inspection alongside the chip itself.

(Source: ok-lab's diary, published July 2021)
https://ok-lab.hatenablog.com/entry/2021/07/24/125923

Chip cleaning guidance warned that heat could also affect the thread

Another part of the July 2021 manual discussed disinfection (treatment addressing contamination concerns) using heat or chemicals. It named hot water and disinfectants, without giving a detailed comparison between them. It also warned about thread shrinkage during autoclave treatment (a sterilization method the diary does not explain).

The diary does not explain how much shrinkage might occur or identify a thread specification affected by it. Mr. Okada's published manual therefore paired its disinfection advice with a warning about possible damage to the thread.

(Source: ok-lab's diary, published July 2021)
https://ok-lab.hatenablog.com/entry/2021/07/24/125923

Chip cleaning concerns extended to hands, gloves, and lubricant packaging

A further passage in the July 2021 manual focused on contact hygiene around the device. It mentioned thoroughly washed hands or new nitrile gloves (gloves presented as an alternative to bare hands). The text also discussed lubricant (gel or lotion for dryness) as a possible source of infection.

Mr. Okada favored disposable products or packaging that avoided finger contact with the contents. The manual's hygiene advice therefore extended beyond the chip to other materials coming into contact with it.

(Source: ok-lab's diary, published July 2021)
https://ok-lab.hatenablog.com/entry/2021/07/24/125923

If you see blood in your urine, even a small amount or for the first time, do not wait and see. See a urologist right away. If you suddenly cannot urinate, or the device cannot be removed, do not try to fix it yourself. Go to a medical facility, including emergency care, immediately.

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How chip cleaning and inspection changed over time

The diary does not say what the current state is.

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OK Prostate Chip products related to chip cleaning and inspection

Current listings include models involved in these reports, including a glass model associated with a crack report.

Products that appear in these entries

(Source: ok-lab's diary, published September 2018)
https://ok-lab.hatenablog.com/entry/20180922/1537592180

(Source: ok-lab's diary, published February 2022)
https://ok-lab.hatenablog.com/entry/2022/02/26/123231

Products the diary mentioned as alternatives

The diary names no alternative.

The specific June 2018 test stopper and September 2018 glass prototype for anal use: No matching product can be confirmed on the current list.

The heat-resistant connector announced in February 2022: No matching product can be confirmed on the current list.

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Common worries about chip cleaning and inspection

The reader questions concerned a new chip's hygiene, equipment that could deform, and the heat limits of connected electrical parts.

"Does chip cleaning matter before first use?"

In an entry published in June 2020, a customer in South Korea asked about manufacturing hygiene and breakage inside the body. Staff said handmade production could not provide the strict hygiene and precision controls associated with factory manufacturing. They acknowledged a few breakage cases, described the risk as low, and said those incidents had not caused major injuries.

Staff favored ceramic or resin over glass, claiming these materials would not become sharp if broken. The diary does not record whether this customer bought a chip or how it felt in use. The staff's hygiene advice applied from the first use: cleaning and disinfection remained necessary each time.

(Source: ok-lab's diary, published June 2020)
https://ok-lab.hatenablog.com/entry/2020/06/27/120614

"What if chip cleaning equipment cannot tolerate boiling?"

In an entry published in February 2022, a customer using a curved resin chip with a flat face asked about lubrication equipment. The customer reported that a vinyl syringe (a tool considered for supplying lubricant) would deform during boiling.

The diary does not record whether the customer's equipment concern was resolved. Mr. Okada's advice addressed lubrication, but did not establish a suitable disinfection method for that syringe.

(Source: ok-lab's diary, published February 2022)
https://ok-lab.hatenablog.com/entry/2022/02/26/123231

"Can chip cleaning damage a vibrating model's controller?"

A different customer in the February 2022 entry asked whether the long ceramic vibrating chip's controller (the electrical control unit) was separate. Mr. Okada said standard assemblies were connected and estimated the controller's heat limit at about 60°C. He also warned that ordinary USB connector covers could deform at 100°C.

His reply announced a boiling-resistant USB connector (a cable connection) intended to separate the chip from its controller. The diary does not record whether the customer bought that option. Mr. Okada recommended the newly released connector to address the ordinary plug's heat limitation.

(Source: ok-lab's diary, published February 2022)
https://ok-lab.hatenablog.com/entry/2022/02/26/123231

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Buying from outside Japan

OK Lab ships internationally to countries covered by Japan Post's EMS courier service. Overseas orders are paid in advance by PayPal. Each order carries a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee, and EMS shipping is charged on top. These terms come from OK Lab's official sales-terms page (written here as plain text, not a link: ok-lab.net/docs/law), checked on September 7, 2026; confirm them on the official store before you order, because they can change.

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Summary of this article

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Source: ok-lab's diary (Okada Comfortable Life Laboratory). The original entries are in Japanese; quotations on this page are translated. Photos and videos are on the original entries.