Can condoms and lube keep the chip clean? | Contamination remained a concern [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 "condom and lubricant hygiene" 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

• The diary raises contamination concerns about lubricant containers, ointments, fingers, and reused condom coverings.
• Mr. Okada favored fresh condoms; his later draft manual specified disposable lubricant or packaging without finger contact.
• The current list includes the single-chip glass model discussed in an illness report; its listing establishes no hygiene benefit.

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: condom and lube safety

The OK Prostate Chip is a small device placed in the urethra near the prostate, which the diary discusses as a prostate-stimulation device. Lubricant, or lube, is a slippery liquid or gel discussed as helping the chip move through that passage. These entries consider lubricant on the chip, contamination during handling, and condoms as coverings or lubricant sources. Mr. Okada's opinions about those possibilities appear alongside a customer's illness report and objections from correspondents.

Lubricant contamination worries shaped the linked resin pair's January 2018 launch

In an entry published in January 2018, Mr. Okada connected his dislike of bottled lube with storage worries and his personal allergies. His resin-chip tests sometimes failed when his urethra was dry. He subsequently reported that a linked resin pair worked without added lubricant in his own test, prompting a planned release.

The announced launch was within 1-2 days, with a planned price of ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) excluding tax, as published in January 2018. That announcement concerned the pair he had tested, whose connecting gap was restricted to 2mm. Mr. Okada recommended the resin option for shorter use.

(Source: ok-lab's diary, published January 2018)
https://ok-lab.hatenablog.com/entry/20180121/1516504265

Ointment safety became urgent after a customer's June 2018 illness report

In an entry published in June 2018, a customer described using a single-chip glass model with an ointment to increase sensation. They reported leaving the chip in overnight for 6 or 7 hours. Their account placed a diagnosis of acute prostatitis, which the diary does not explain, 16 days later.

Earlier urine testing had found blood; the customer suspected hygiene, ointment irritation, prolonged use without urination, and excessive stimulation. The diary does not record their eventual recovery or establish which suspected factor caused the illness. Mr. Okada subsequently relayed advice against combining ointments with the chip.

(Source: ok-lab's diary, published June 2018)
https://ok-lab.hatenablog.com/entry/20180609/1528523953

Condom reuse tests left Mr. Okada expecting eventual tearing

In an entry published in October 2018, Mr. Okada said his own condom reuse tests had revealed no problems. Nevertheless, he expected a condom to tear eventually. His suggestion that cleaning might permit a few further uses remained tentative, without a confirmed safe reuse limit in the paragraph. Mr. Okada described a fresh condom for each use as the safest and cleanest choice.

(Source: ok-lab's diary, published October 2018)
https://ok-lab.hatenablog.com/entry/20181027/1540618195

Condom hygiene claims centered on sealed lubricant and less finger contact

In an entry published in November 2018, Mr. Okada identified contamination concerns both during lubricant storage and during transfer to the chip. His proposal involved a condom barrier between fingers and the chip at the urethral opening. He claimed this avoided contamination from fingers and supplied enough existing lubricant to make an additional lotion unnecessary.

He particularly valued sealed packaging because hygiene after opening a container of lubricant worried him. Mr. Okada recommended condom-supplied lubricant on that basis.

(Source: ok-lab's diary, published November 2018)
https://ok-lab.hatenablog.com/entry/20181103/1541231588

Condom coverings drew warnings about bacterial buildup and snagging in January 2019

In an entry published in January 2019, a correspondent challenged the proposal to leave a condom covering around the chip. The correspondent warned that knots could collect bacteria and loose rubber could snag if the chip entered the bladder. They also argued that substances from metal and resin could pass through rubber, leaving the material-related concern unresolved.

Mr. Okada replied that he still considered a single use fairly safe. The paragraph does not describe a confirmed accident involving such a covering. His reply accepted the warning that reused coverings could become places where bacteria accumulated.

(Source: ok-lab's diary, published January 2019)
https://ok-lab.hatenablog.com/entry/2019/01/26/152042

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The maker's answer to condom and lube safety

Mr. Okada's later guidance emphasized disposable supplies, although the diary also preserved disputed claims about condoms and ointments.

Ointment safety advice rejected germ-killing claims as sufficient protection

In an entry published in June 2018, Mr. Okada added a warning from a correspondent described as having medical knowledge. The correspondent said germ-killing claims on ointments did not amount to medical-level protection. They warned that combining such ointments with the chip could substantially increase infection risk. Mr. Okada published their advice against that combination.

(Source: ok-lab's diary, published June 2018)
https://ok-lab.hatenablog.com/entry/20180609/1528523953

Lube safety guidance favored disposable supplies and protected containers

In an entry published in July 2021, Mr. Okada reproduced a draft instruction document that explicitly raised infection from lubricant. Its stated preference was disposable lubricant or a type that avoided contact with fingers. The draft also said its claims of benefits and effects were not guaranteed. For lubricant hygiene, Mr. Okada's document favored packaging that limited the contact it had identified as a concern.

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

Condom safety guidance also addressed possible harm to a partner

The draft reproduced in an entry published in July 2021 also addressed sex while the chip remained in place. It raised possible injury to a partner's internal lining and the possibility of the chip being left inside their body. This passage concerned protection during sex, a separate situation from the earlier discussion of a covering around the chip. Mr. Okada's draft made a condom a requirement in that situation.

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

Lubricant tube hygiene plans made the liquid pouches disposable

In an entry published in March 2024, Mr. Okada described an experimental liquid-delivery tube intended to carry water or jelly deeper into the urethra. His proposed liquid sources were a freshly opened jelly-drink pouch or a cleaned empty pouch containing water. He intended the pouch to be disposable in either version.

For the 4mm tube section, lengths up to 25cm were offered at ¥500 (about $3 at ¥156 = $1, rate as of 2026-09-04) excluding tax, as published in March 2024. He presented this as something he had tried and could make on request, while suggesting that more convenient equipment probably existed. His hygiene plan for the liquid supply centered on disposable pouches.

(Source: ok-lab's diary, published March 2024)
https://ok-lab.hatenablog.com/entry/2024/03/09/122635

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 condom and lube safety changed over time

The diary does not say what the current state is.

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OK Prostate Chip products related to condom and lube safety

The current product list includes the single-chip glass model discussed in the June 2018 illness report.

Products that appear in these entries

(Source: ok-lab's diary, published June 2018)
https://ok-lab.hatenablog.com/entry/20180609/1528523953

Products the diary mentioned as alternatives

The diary names no alternative.

The linked resin pair, custom liquid-delivery tube, and wire-linked chip (Alien) appear in January 2018, March 2024, and June 2024 respectively. No matching product can be confirmed on the current list.

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Common worries about condom and lube safety

"Can condom handling introduce contamination despite sealed packaging?"

In an entry published in November 2018, a reader questioned the hygiene of tools and handling involved in preparing a condom covering. The reader also wondered whether covering glass defeated the point of that material. Mr. Okada acknowledged that contamination could occur during preparation near the body.

His reply therefore treated the covering's cleanliness as something handling could compromise. Mr. Okada's response emphasized accounting for that contamination during preparation.

(Source: ok-lab's diary, published November 2018)
https://ok-lab.hatenablog.com/entry/20181103/1541231588

"Are long lubricant tubes difficult to keep clean?"

In an entry published in March 2024, a reader questioned the hygiene and upkeep of a long tube for delivering lubricant. The reader suggested another approach to moving liquid and questioned whether the tube justified its maintenance. Mr. Okada acknowledged that suggestion but explained his interest in supplying a deeper area without lubricating the entire passage.

The diary does not record the reader trying the resulting attachment or reporting on its cleanliness. Mr. Okada's reply called for attention to cleanliness inside the tube and at its connections.

(Source: ok-lab's diary, published March 2024)
https://ok-lab.hatenablog.com/entry/2024/03/09/122635

"Could urethral lube help when the chip will not advance?"

In an entry published in June 2024, a customer asked why their wire-linked chip (Alien) had advanced successfully only once. Their bladder-end chip was S, while Mr. Okada's reply identified the prostate section as M. Mr. Okada suspected insufficient moisture, while also considering the device's shape and bending of its wire.

He offered these as possible explanations for the customer's difficulty. The diary does not record whether the problem was resolved. His proposed response centered on increased lubrication.

(Source: ok-lab's diary, published June 2024)
https://ok-lab.hatenablog.com/entry/2024/06/29/123044

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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.