Why is the chip unavailable? | Sales pauses and delivery times depend on the product [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 "sales suspensions, restarts, stock shortages and delivery times" 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

Sales have paused because of product problems, limited production, supply shortages, and the maker's health.

Mr. Okada has responded with redesigns, limited order batches, waiting periods, cancellations, and refunds.

The current product list gives prices, but recent entries still describe stock shortages and suspended custom orders.

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: stock shortages and delivery times

The OK Prostate Chip is a small device placed in the urethra to act on the prostate. This topic concerns whether its maker can accept an order, obtain the required parts, and finish the requested product. The entries cover chips, their attachments, and separate devices worn outside the body. Waiting times changed when supplies ran out, designs needed revision, or Mr. Okada could not maintain production.

Medical-device application concerns stalled the microchip sales plan in October 2017

In an entry published in October 2017, Mr. Okada said the early microchip's sales plan had stalled. He had received advice that selling a device placed inside the body might require a medical-device application. He acknowledged that he had not examined the law closely and proposed selling it without specifying an insertion site.

(Source: ok-lab's diary, published October 2017)
https://ok-lab.hatenablog.com/entry/20171017/1508206021

Stopper improvements and related patent paperwork pushed the earliest release date beyond June 2018

An entry published in June 2018 described bleeding after prolonged use of a stopper (an attachment intended to limit chip movement). That tester found a burr (an unwanted rough edge); a separate tester reported scraping and bleeding from another sample. Mr. Okada apologized and revised production, saying the change would stabilize quality. He said the improvements and related patent paperwork meant release would be no earlier than July.

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

Ceramic semi-long sales paused after breakage reports in July 2019

In an entry published in July 2019, Mr. Okada paused ceramic semi-long chip sales after 2 reports of problems. One customer's chip broke during washing, and Mr. Okada offered a thicker replacement. An entry published in August 2019 announced resumed sales with chips about 4 mm thick. Mr. Okada's July reply asked the affected customer to wait for the replacement.

(Source: ok-lab's diary, published July 2019)
https://ok-lab.hatenablog.com/entry/2019/07/27/130537

(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/10/125102

Coated wire sales stopped following the maker's September 2021 bleeding report

In an entry published in September 2021, Mr. Okada reported urethral bleeding during his own testing. He attributed it to a tiny exposed tip on coated wire (Miko wire). He canceled existing orders and said sales would remain stopped until safety could be established.

(Source: ok-lab's diary, published September 2021)
https://ok-lab.hatenablog.com/entry/2021/09/11/125735

External plate sales paused while support and specifications changed in April 2023

In an entry published in April 2023, Mr. Okada paused new orders for the external plate-and-belt set. He wanted to concentrate on existing buyers and said unfavorable feedback could keep sales frozen until further improvements. Support and replacement-size parts remained available to those buyers.

Another entry published in April 2023 announced a wide-hole specification intended to give the exposed penile tip a clitoral appearance. Mr. Okada said future sets would adopt it, and exchanges would take priority over new sales. He offered existing buyers a free exchange on request, with some waiting time.

(Source: ok-lab's diary, published April 2023)
https://ok-lab.hatenablog.com/entry/2023/04/08/122508

(Source: ok-lab's diary, published April 2023)
https://ok-lab.hatenablog.com/entry/2023/04/22/123057

New orders paused during the maker's illness in July 2023

In an entry published in July 2023, Mr. Okada said breathing difficulties associated with heart failure had interrupted work. New orders stopped, although he expected staff assistance to help complete existing orders with delays. He asked for a break lasting at least until around the month's end.

(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/22/120258

A requested resin chip was out of stock in September 2025

An entry published in September 2025 described a customer requesting a connection arrangement previously shown in the diary. Blue chips (the diary's nickname for its resin prostate chips) in the Zoro design were unavailable except in S size. The entry does not record completion of this customer's order; Mr. Okada asked the customer to wait for stock.

(Source: ok-lab's diary, published September 2025)
https://ok-lab.hatenablog.com/entry/2025/09/27/123018

Micro wire custom orders stopped because production was difficult in August 2026

In an entry published in August 2026, Mr. Okada suspended custom orders for micro wire devices (Micro Gejigeji and Micro Skyfish). These used 0.03 mm and 0.04 mm wire, and he described difficulty reproducing the intricate work after a break. He intended to attempt existing orders and considered making batches for a future restart. His notice said new custom requests could not currently be accepted.

(Source: ok-lab's diary, published August 2026)
https://ok-lab.hatenablog.com/entry/2026/08/08/122906

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The maker's answer to stock shortages and delivery times

The maker's responses included alternatives, limited ordering periods, and payment only after a requested item could be completed.

Titanium delivery uncertainty prompted a resin alternative in September 2021

An entry published in September 2021 answered a beginner seeking a short titanium chip. Mr. Okada expected titanium sales no earlier than year-end, at more than twice the resin price. The diary does not record whether the customer ordered; Mr. Okada suggested connected resin auxiliary chips (additional chips used in a linked arrangement).

(Source: ok-lab's diary, published September 2021)
https://ok-lab.hatenablog.com/entry/2021/09/25/125720

Limited order batches controlled delivery commitments for the March 2023 launch

In an entry published in March 2023, Mr. Okada introduced batch-limited sales of the external plate-and-belt set. He said only he could manufacture it, so orders would close when they reached production capacity. He planned to reopen sales after completing accepted orders, asking buyers to work within those ordering periods.

(Source: ok-lab's diary, published March 2023)
https://ok-lab.hatenablog.com/entry/2023/03/25/122614

Stainless steel delivery times depended on assembly and stock in July 2023

An entry published in July 2023 introduced provisional email reservations for stainless steel chips. Mr. Okada said difficulties attaching the retrieval thread meant some stocked pieces could not become finished orders. Payment would be requested after successful completion, with dispatch within 3 business days after payment; work needing drying required additional days.

He also explained that replacement stock required grouped manufacturing orders, followed by an expected wait exceeding 2 months. His purchasing guidance was to reserve by email and wait for confirmation before paying.

(Source: ok-lab's diary, published July 2023)
https://ok-lab.hatenablog.com/entry/2023/07/08/122632

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 stock shortages and delivery times changed over time

(Source: ok-lab's diary, published May 2022)
https://ok-lab.hatenablog.com/entry/2022/05/21/124217

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OK Prostate Chip products related to stock shortages and delivery times

The current list supplies product prices, but it does not establish availability of individual sizes or historical custom specifications.

Products that appear in these entries

(Source: ok-lab's diary, published July 2019)
https://ok-lab.hatenablog.com/entry/2019/07/27/130537

(Source: ok-lab's diary, published August 2022)
https://ok-lab.hatenablog.com/entry/2022/08/20/122920

(Source: ok-lab's diary, published March 2023)
https://ok-lab.hatenablog.com/entry/2023/03/25/122614

(Source: ok-lab's diary, published April 2026)
https://ok-lab.hatenablog.com/entry/2026/04/04/122916

Products the diary mentioned as alternatives

(Source: ok-lab's diary, published September 2021)
https://ok-lab.hatenablog.com/entry/2021/09/25/125720

The early microchip, stopper prototype, coated wire, sea-slug version 4, and micro wire devices discussed here were historical versions or custom items. No matching product can be confirmed on the current list.

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Common worries about stock shortages and delivery times

Customer replies distinguish a mistaken stock notice, an unavailable replacement, and a product held back for investigation.

"Why were flat-curve resin chip sales paused after roughness appeared?"

An entry published in August 2022 described a customer asking whether a roughened flat-curve resin chip remained usable after blood appeared in urine. OK Lab requested its return, and the manufacturer paused its listing on the online marketplace Amazon during investigation. After examining it, the manufacturer judged the roughness to be deposited material, although its composition was not tested.

The diary records that a replacement was sent, without establishing its subsequent performance. Mr. Okada suggested medical assessment because the reported deposit remained unexplained.

(Source: ok-lab's diary, published August 2022)
https://ok-lab.hatenablog.com/entry/2022/08/20/122920

"Why was a sea-slug version 4 replacement unavailable after bleeding?"

An entry published in April 2023 described a customer requesting surface repair after bleeding with a ceramic sea-slug chip (Umiushi 4). Staff initially offered inspection followed by repair or replacement, then changed that response after examining the returned chip. They judged the thin coating insufficient to explain the bleeding and reported recurring difficulty removing this design, including bleeding after forceful pulling.

Staff said exchanging it would probably not resolve the problem; that was their assessment, not a confirmed cause of this customer's bleeding. The customer's final choice is not recorded; OK Lab offered return of the same item or a refund.

(Source: ok-lab's diary, published April 2023)
https://ok-lab.hatenablog.com/entry/2023/04/22/123057

"Was the stainless steel chip really out of stock?"

An entry published in April 2026 reproduced a reader's warning that stock notices were discouraging purchases. Staff acknowledged forgetting to remove the stainless steel Zoro notice and temporarily cleared the semi-long and Zoro out-of-stock displays. Mr. Okada thanked the reader and directed buyers seeking other stainless steel models to inquire by email.

(Source: ok-lab's diary, published April 2026)
https://ok-lab.hatenablog.com/entry/2026/04/04/122916

"Can an out-of-stock chip be replaced after it breaks?"

An entry published in June 2026 described a customer requesting defect support for a cracked resin Zoro chip. Staff accepted the case as an initial defect without identifying its cause. The M size was out of stock, and no arrival date was known.

They therefore offered a refund instead of an exchange; the diary does not confirm payment of that refund. OK Lab asked for the broken item back so the manufacturer could examine it.

(Source: ok-lab's diary, published June 2026)
https://ok-lab.hatenablog.com/entry/2026/06/27/122906

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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.