What is a twisted prostate chip? | A twisted shape with material and design limits [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 "twisted prostate chips" 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

• Twist chips vary in shape, and the diary records inflammation and bleeding after use.
• Mr. Okada’s replies describe manufacturing limits and problems with particular placements.
• The current list includes short ceramic and long ceramic four-point twist chips.

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: twisted prostate chips

The OK Prostate Chip is a device placed in the urethra (the urine passage) to act on the prostate. Twist chips have raised sections turned in different directions, extending the normally flat shape into three dimensions. Mr. Okada describes the twist as producing rotation within the urethra, including its narrow section through the prostate. The diary distinguishes short twisted bodies, linked pairs, and longer curved versions, rather than one standard shape.

Twist chips began as custom orders because Mr. Okada considered them dangerous

In an entry published in July 2018, a customer proposed a glass chip with neighboring bulges turned by 90 degrees. Mr. Okada agreed to try it, but described screw-shaped chips as dangerous and more burdensome to the urethra.

The corrected surcharge was ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) above the short-chip price, producing prices excluding tax of ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04) for glass and ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) for resin. He ruled out curved long and medium-length screw forms because he expected rotation to be difficult. He restricted sales to custom orders and explicitly discouraged buying this design.

(Source: ok-lab's diary, published July 2018)
https://ok-lab.hatenablog.com/entry/20180707/1530947332

An oversized twist chip preceded inflammation in Mr. Okada’s own account

In an entry published in August 2018, Mr. Okada reported urethral inflammation after wearing an oversized curved twist chip. According to his account, his doctor described that size as simply a foreign object in his urethra.

The same entry introduced a fully curved twist at ¥6,000 (about $38 at ¥156 = $1, rate as of 2026-09-04) excluding tax, with no separate twisting fee. Mr. Okada limited the series to custom orders for experienced users at that stage.

(Source: ok-lab's diary, published August 2018)
https://ok-lab.hatenablog.com/entry/20180804/1533366676

Ceramic twist chips added short and curved choices in December 2019

In an entry published in December 2019, Mr. Okada announced short ceramic twist chips in S and M. A medium-length ceramic cobra twist (a curved chip twisted beside its prostate-area bulge) was also introduced in M. These initial versions had maximum widths of about 8mm and prices matching glass versions.

Before formal sales began, Mr. Okada offered these versions through custom requests. He suggested the screw-shaped auxiliary chip (a supporting second chip) as a companion to the short twist.

(Source: ok-lab's diary, published December 2019)
https://ok-lab.hatenablog.com/entry/2019/12/07/162608

Blue-resin twist chips launched with three lengths in November 2021

In an entry published in November 2021, the blue-resin short twist chip launched at ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04) excluding tax. The S version measured 26.5mm long and 2.5mm thick, with widths of 6.5mm, 7.5mm, and 7.5mm along its body.

Lengths for M and L were 30.5mm and 34.5mm, respectively. The diary does not record customer results for this launch.

(Source: ok-lab's diary, published November 2021)
https://ok-lab.hatenablog.com/entry/2021/11/20/125643

White-resin twist chips expanded after a curved custom build succeeded

In an entry published in September 2023, a customer requested a curved screw-shaped chip in white resin. Mr. Okada accepted without promising success, explaining that twisting and bending posed separate manufacturing difficulties.

He reported success with that request and then with a larger five-point twist. He began offering the white-resin five-point design at ¥6,000 (about $38 at ¥156 = $1, rate as of 2026-09-04) excluding tax. The diary does not record how the customer’s chip felt in use.

(Source: ok-lab's diary, published September 2023)
https://ok-lab.hatenablog.com/entry/2023/09/16/122723

A ceramic four-point twist chip carried separate customization charges in August 2025

In an entry published in August 2025, a customer requested a customized L-size ceramic four-point twist chip. The quote listed ¥7,700 (about $49 at ¥156 = $1, rate as of 2026-09-04) for the chip and ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) for magatama shaping (a named shaping option).

Wire reinforcement was quoted separately at ¥2,200 (about $14 at ¥156 = $1, rate as of 2026-09-04). The diary does not record whether this quoted order was completed.

(Source: ok-lab's diary, published August 2025)
https://ok-lab.hatenablog.com/entry/2025/08/23/122935

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The maker's answer to twisted prostate chips

Mr. Okada’s responses depended on the material, motor connection, and whether connected parts could move as intended.

Motorized resin twist chips were discouraged after leakage and wiring concerns

An entry published in February 2019 records a request for a resin twist chip with motors at both ends. Mr. Okada first declined, then attempted a prototype.

A waterproofing check found a leak, which he reinforced. He reported that both motors worked, but suspected the twisting process had strained their buried wires. He discouraged motorized resin twist chips because performance might deteriorate.

(Source: ok-lab's diary, published February 2019)
https://ok-lab.hatenablog.com/entry/2019/02/23/142754

Ceramic twist chips received a motor attachment without drilling the twisted section

In an entry published in February 2020, a customer requested a motorized ceramic four-point twist chip. Mr. Okada considered a drilled connection, then chose an attachment design without a hole through the twisted section.

He reported that tests intended to break prototypes broke other narrow ceramic sections before the motor connection failed. The custom charge was the base-chip price plus ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) excluding tax. Mr. Okada offered this work through custom requests at that stage.

(Source: ok-lab's diary, published February 2020)
https://ok-lab.hatenablog.com/entry/2020/02/01/151232

Curved auxiliary twist chips were planned with spacing fixed before shipment

In an entry published in December 2023, Mr. Okada described a curved auxiliary chip carried on a silicone tail (a tube connecting chips). An internal tube prevented the planned five-point form, leaving a two-point twist after trials.

He said passing the tail through the curved part and sliding the chip afterward were difficult. The twist-curved version was priced at ¥6,000 (about $38 at ¥156 = $1, rate as of 2026-09-04) excluding tax. He therefore proposed fixing its position before shipping, with spacing agreed in advance.

(Source: ok-lab's diary, published December 2023)
https://ok-lab.hatenablog.com/entry/2023/12/30/122243

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 twisted prostate chips changed over time

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OK Prostate Chip products related to twisted prostate chips

The current product list confirms these ceramic twist models; historical custom specifications remain separate.

Products that appear in these entries

OK Lab’s own online store lists the short ceramic twist chip.

OK Lab’s own online store lists the long ceramic four-point twist chip.

(Source: ok-lab's diary, published August 2025)
https://ok-lab.hatenablog.com/entry/2025/08/23/122935

(Source: ok-lab's diary, published March 2026)
https://ok-lab.hatenablog.com/entry/2026/03/14/122910

Products the diary mentioned as alternatives

The diary names no alternative.

Historical descriptions include the early curved twist, blue-resin short-twist release, white-resin five-point design, and curved auxiliary build. No matching product can be confirmed on the current list.

The motorized and movable prototypes, and the customized four-point quote, describe custom builds. No matching product can be confirmed on the current list.

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Common worries about twisted prostate chips

The diary’s questions concern material substitutions, connected ceramic parts, and whether a twist can receive a custom modification.

"Could the custom glass twist chip be made in resin?"

In an entry published in August 2019, a glass twist chip user asked for the same kind of shape in resin. The customer reported bleeding on the first use and later described a satisfactory result.

Mr. Okada said glass allowed a sharp, localized twist, while resin only allowed gradual twisting. He explained that resin could lose its shape or strength during manufacture. He therefore declined that particular resin version.

(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/24/125858

"Could several ceramic twist chips be connected together?"

In an entry published in February 2024, a customer asked about lining up ceramic twist chips beside a small screw-shaped chip. Mr. Okada said a twist could expand the urethra while leaving a path for urine. However, he considered it unsuitable at the urinary sphincter (the area that closes to stop urine), because urine could not be stopped there.

He said ceramic was difficult to make with an internal passage for connecting thread. The diary does not record whether this customer’s proposed assembly was completed. Mr. Okada suggested blue resin, white resin, or stainless-steel screw components instead.

(Source: ok-lab's diary, published February 2024)
https://ok-lab.hatenablog.com/entry/2024/02/24/122947

"Could a short twist chip receive the movable modification?"

In an entry published in March 2026, a customer requested the movable modification (a named custom option) on a ceramic short twist. Staff said it normally covered chips without twists or bumps, but offered a prototype attempt if extra time was acceptable.

Mr. Okada wrote that no reply had arrived, yet he attempted the build and completed a difficult prototype. The diary does not record the customer’s response to the finished item. Mr. Okada said he remained willing to attempt difficult custom requests.

(Source: ok-lab's diary, published March 2026)
https://ok-lab.hatenablog.com/entry/2026/03/14/122910

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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.