How long does getting used to a prostate chip take? | Persistent pain needs attention [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 "getting used to a prostate chip" 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.

---

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 describes changing comfort, but gives no reliable deadline for getting used to a prostate chip.
• Mr. Okada advises against use during pain and recommends stopping when painful urination keeps returning.
• The current list includes the ceramic semi-long chip, but provides no size options.

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.

---

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.

---

Before you read: key terms

---

What happens: getting used to a prostate chip

The OK Prostate Chip is a small device placed in the urethra (the urine passage) to act on the prostate. Getting used to it means changes in sensation and how the device settles inside that passage, as described by diary contributors. Their accounts cover chips, positioning accessories and wire-and-tube loops, all discussed in relation to comfort within the urine passage. They include increasing comfort, pain and problems with particular builds.

Early prostate chip discomfort stopped a beginner before much progress

In an entry published in October 2017, a beginner's staff report described stopping before the chip had advanced 5mm. The beginner wanted to explore the device but initially found the sensation intolerable.

Later attempts became less unfamiliar, although the report still described pain and unexpected movement during urination. Mr. Okada acknowledged that he could not accurately remember his own earliest difficulties. His accompanying advice described lubricant (a slippery lotion) as safer for resin chips when the urethra was dry.

(Source: ok-lab's diary, published October 2017)
https://ok-lab.hatenablog.com/entry/20171019/1508375473

Prostate chip discomfort also came from a handmade stopper accessory

In an entry published in August 2018, a tester described difficulty adjusting to a sphincter stopper (an accessory intended to maintain the chip's position). The customer said adjustment took time, and differences between handmade pieces could leave an uncomfortable rolling sensation inside.

The same report praised a smaller, three-bump prototype supplied by Mr. Okada. In response, he announced a 50mm version with an S size option. His suggestion was that this smaller version might be less difficult for customers.

(Source: ok-lab's diary, published August 2018)
https://ok-lab.hatenablog.com/entry/20180811/1533969999

Reported improvement in prostate chip discomfort followed pain and inflammation

In an entry published in August 2020, a customer described initial pain and inflammation with a ceramic semi-long SS chip. The customer later reported becoming more accustomed to it, then finding its sensations insufficient for the experience they wanted.

The diary does not record whether the initial inflammation received medical assessment. Mr. Okada acknowledged the message but did not explain those symptoms in his reply. His product suggestion concerned a model with bumps after his return to work, rather than an assessment of the customer's earlier pain.

(Source: ok-lab's diary, published August 2020)
https://ok-lab.hatenablog.com/entry/2020/08/29/130333

Correct tubing changed the maker's account of prostate chip discomfort

An entry published in November 2024 corrected Mr. Okada's earlier account of a chipless loop (a wire-and-tube device without a solid prostate chip). He had mistakenly tested an older prototype with 2mm tubing while describing a model specified with 2.5mm tubing.

With the correct 2.5mm version, he reported no prickling and almost no discomfort from the beginning. He still described roughly half a day before it felt fully settled. The correction therefore ties the prickling report to the older prototype.

(Source: ok-lab's diary, published November 2024)
https://ok-lab.hatenablog.com/entry/2024/11/30/122919

Experience did not prevent prostate chip discomfort with stronger wire

In an entry published in March 2025, Mr. Okada described testing a 0.4mm double-wire prototype. He reported excessive pressure and a pounding heart, ending that test after 2 hours. He then changed devices and still felt unwell, although he said this settled after about 1 hour.

His next ceramic-chip loop assembly initially moved 5mm-10mm, then felt steadier from around the second day. He attributed the lingering symptoms to the earlier double-wire test. The diary does not record a medical assessment confirming that explanation.

(Source: ok-lab's diary, published March 2025)
https://ok-lab.hatenablog.com/entry/2025/03/08/123016

---

The maker's answer to getting used to a prostate chip

Mr. Okada's responses considered time, lubrication, size and friction; later advice placed limits on continuing through pain.

Getting used to a prostate chip had no promised deadline

In an entry published in January 2018, Mr. Okada questioned expecting the intended position after only 2 or 3 attempts. He described learning as potentially lengthy, even mentioning a year, without establishing a normal adjustment period.

He also wrote that lubricant could be depleted along the passage before the tip reached a difficult curve. His proposed response was renewed lubrication, which he thought could make passage easier. He mentioned a linked two-chip design for people focused on reaching the prostate, while placing greater emphasis on allowing time. His broader advice was to avoid judging progress solely by the first few attempts.

(Source: ok-lab's diary, published January 2018)
https://ok-lab.hatenablog.com/entry/20180127/1517054930

Smaller sizes became part of the maker's answer to prostate chip discomfort

In an entry published in June 2019, Mr. Okada wrote that small ceramic chips could initially feel almost unstimulating, then become pleasurable. He also described larger chips settling into a position he found more comfortable. These experiences led him to favor the smallest chip that produced the sensations he wanted.

The ceramic range launched with 8 sizes, with short S and SS and semi-long SS planned about 2 weeks later. Those were launch plans; the current product list supplies no size options. At the time, he advised customers seeking those smaller versions to wait for their release.

(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/08/144200

Prostate chip pain prompted the maker to question prolonged friction

In an entry published in February 2020, a customer reported lingering aching after repeated position adjustments with a four-point twist long chip. The customer also reported blood in semen on 2 occasions and asked whether the retrieval thread (attached for taking the device out) caused it.

Mr. Okada allowed that the thread might have been involved, but said most bleeding in his experience seemed related to friction. The diary does not record whether this customer's bleeding or pain resolved. His advice was to limit prolonged friction with larger chips.

(Source: ok-lab's diary, published February 2020)
https://ok-lab.hatenablog.com/entry/2020/02/22/145216

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.

---

How getting used to a prostate chip changed over time

---

OK Prostate Chip products related to getting used to a prostate chip

The current list includes ceramic models discussed in these entries, without confirming their historical size options.

Products that appear in these entries

The ceramic semi-long chip is listed in OK Lab's own online store.

(Source: ok-lab's diary, published August 2020)
https://ok-lab.hatenablog.com/entry/2020/08/29/130333

Products the diary mentioned as alternatives

The short ceramic chip is listed in OK Lab's own online store.

(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/08/144200

Historical custom screws, stopper prototypes, metal test pieces and chipless wire assemblies: No matching product can be confirmed on the current list.

Four-line support was no longer offered by the June 2022 entry.

(Source: ok-lab's diary, published June 2022)
https://ok-lab.hatenablog.com/entry/2022/06/11/123420

---

Common worries about getting used to a prostate chip

Questions about fit and recurring pain received different answers in the diary.

"Can a shorter prostate chip reduce friction?"

In an entry published in April 2019, a customer considering a shorter custom screw described bleeding and urethral pain after increasing chip size. They reported becoming accustomed to larger chips after several days, and later said insertion had become possible with lubricant. Mr. Okada thought a shape without a narrowed middle could increase friction, while a shorter chip could reduce it.

The requested screw was 10mm wide and 10mm long; the finished prototype measured 10mm wide and about 18mm long. The diary does not record how that prototype felt in use. He offered to make the proposed designs, leaving size and shape choices to the customer.

(Source: ok-lab's diary, published April 2019)
https://ok-lab.hatenablog.com/entry/2019/04/13/150233

"Can prostate chip discomfort come from an oversized connection?"

In an entry published in June 2022, a customer reported that 3 cable-supported builds could not pass the urethral opening. The connecting filler was thicker than the chips, prompting a request for a slimmer joint. Mr. Okada explained that older connections added about 2mm compared with thread-connected chips.

He also confirmed that four-line support had already ended. The diary does not record whether a replacement solved this customer's difficulty. His reply offered a newer connection intended to produce a much thinner finished joint.

(Source: ok-lab's diary, published June 2022)
https://ok-lab.hatenablog.com/entry/2022/06/11/123420

"Will prostate chip pain disappear with more practice?"

In an entry published in July 2026, a customer asked whether practice would prevent painful urination lasting 2 or 3 days after first use. Mr. Okada considered pain lasting more than a day a possible sign of a problem. He suggested injury from forced insertion or inflammation that already existed among possible explanations.

He thought experience could reduce strain through smoother movement, but the diary does not establish what caused this customer's symptoms. The diary does not record a follow-up showing whether the pain resolved. He advised no use during pain, stopping if several days of pain recurred, and considering a urologist (a doctor treating urinary problems).

(Source: ok-lab's diary, published July 2026)
https://ok-lab.hatenablog.com/entry/2026/07/25/123012

---

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.

---

Summary of this article

---

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.