Can I use a chip after prostate removal? | Reported pleasure does not establish safety [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 "using the chip after prostate removal" 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

• A customer reported pleasure after prostate surgery, alongside difficulties positioning and retrieving the chip.
• Mr. Okada suggested possible support but could not confirm that bladder placement was safe.
• No current product is directly tied to this topic.

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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: using a chip after prostate removal

The OK Prostate Chip is a device placed in the urethra (the urine passage) to act on the prostate. This topic concerns people asking whether the device can produce sexual sensation after part or all of the prostate has been removed. The entries describe reported sensation, difficulty keeping a chip in place, and proposals involving the bladder. They do not establish that the same result, or safe use, follows every kind of surgery.

Pleasure after prostate removal was a customer's expectation in April 2018

In an entry published in April 2018, a caller said they had undergone prostate removal for cancer. They still experienced pleasure from tight supportive underwear and believed a chip could also produce sensation. This was an explanation of their interest in the device, rather than a report of successful chip use.

The diary does not record how the chip felt for this caller. It also does not record Mr. Okada giving this caller advice about use after surgery.

(Source: ok-lab's diary, published April 2018)
https://ok-lab.hatenablog.com/entry/20180414/1523697398

A chip after prostate surgery brought pleasure and placement problems in May 2021

In an entry published in May 2021, a customer described a medium-length ceramic chip, size L, with a stopper attachment after prostate surgery. The chip rotated near the muscle instead of advancing, and the customer reported a risk of it slipping into the bladder.

They associated its second raised section settling into place with unusually strong pleasure and what they described as uncontrollable ejaculation. They said semen went backward into the bladder; strong muscle resistance during removal made them fear the retrieval thread (removal thread) would break.

No matching product can be confirmed on the current list. Mr. Okada suggested auxiliary support (a separate attachment) because he expected difficulty keeping the chip in place.

(Source: ok-lab's diary, published May 2021)
https://ok-lab.hatenablog.com/entry/2021/05/15/130037

Bladder placement after prostate removal failed with custom builds discussed in November 2021

In an entry published in November 2021, Mr. Okada recalled a customer who had undergone complete prostate removal. That customer wanted a chip designed to remain in the bladder because placement in the prostate was no longer possible. Mr. Okada said he made suitable shapes on about 2 occasions, but the chips were easily expelled.

No matching product can be confirmed on the current list. Mr. Okada did not offer reassurance that bladder placement was safe.

(Source: ok-lab's diary, published November 2021)
https://ok-lab.hatenablog.com/entry/2021/11/06/125812

Sensation after prostate surgery prompted a personal interpretation in June 2022

In an entry published in June 2022, Mr. Okada returned to the question of where sexual sensation arises. He linked reaching orgasm to stimulation around the inner urethral sphincter, which he located at the boundary with the bladder. He explicitly based that view on his own experience.

His comment does not record a tested solution for someone after complete prostate removal. It provides no additional postoperative safety advice.

(Source: ok-lab's diary, published June 2022)
https://ok-lab.hatenablog.com/entry/2022/06/25/123016

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The maker's answer to using a chip after prostate removal

Mr. Okada offered a possible explanation and support idea, while acknowledging that he could not establish the safety of bladder placement.

Sensation after prostate surgery was linked to nearby muscles in Mr. Okada's reply

Mr. Okada's May 2021 reply attributed most pleasure to areas around the outer and inner urethral sphincters (muscles along the urine passage). He was interpreting the customer's experience alongside his own views about where sensation occurs.

The customer reported their doctor's measurements: roughly 5 mm of sphincter, 10 mm of prostate tissue, and about 15 mm before the bladder. These reported measurements describe remaining tissue; they do not establish a result after complete removal. Mr. Okada's explanation does not provide a general assurance that chip use after prostate surgery is safe.

(Source: ok-lab's diary, published May 2021)
https://ok-lab.hatenablog.com/entry/2021/05/15/130037

Keeping a chip stable after prostate surgery led to a tentative support suggestion

In his reply published in May 2021, Mr. Okada expected the shortened prostate area to make stable placement particularly difficult. He tentatively suggested screw-shaped auxiliary support near the bulbar urethra (not explained in the diary). The diary does not record whether that customer tried this suggestion or how the proposed support performed.

No matching product can be confirmed on the current list. Mr. Okada offered the attachment as a possible support option.

(Source: ok-lab's diary, published May 2021)
https://ok-lab.hatenablog.com/entry/2021/05/15/130037

Bladder placement after prostate removal received no assurance of safety from the maker

In the reply published in November 2021, Mr. Okada said people's ability to retain a chip in the bladder appeared to vary. He also said he lacked the knowledge to determine whether that use would place a burden on the bladder.

That limitation concerned safety as well as whether the chip would remain in place. Mr. Okada declined to reassure the questioner that a bladder chip could safely act as an anchor.

(Source: ok-lab's diary, published November 2021)
https://ok-lab.hatenablog.com/entry/2021/11/06/125812

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How using a chip after prostate removal changed over time

The diary does not say what the current state is.

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OK Prostate Chip products related to using a chip after prostate removal

No current product is directly tied to this topic.

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Common worries about using a chip after prostate removal

The recorded question about a bladder anchor received no assurance that the proposal was safe.

"Can bladder placement hold a chip after prostate removal?"

In an entry published in November 2021, a reader proposed a bladder chip as an anchor; their surgical history was not given. Their current device came out during urination, but they reported an earlier one remaining in the bladder. They hoped an anchor would prolong placement and help develop sensation.

Mr. Okada brought up the earlier complete-removal case in his reply; the questioner and that former customer were different people. The diary does not record the requested arrangement being supplied or producing the hoped-for result. Mr. Okada said he could not assure the questioner that the bladder-anchor proposal was safe.

(Source: ok-lab's diary, published November 2021)
https://ok-lab.hatenablog.com/entry/2021/11/06/125812

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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.