Can two prostate chips stay connected? | Breakage reports led to a redesigned connector [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 "two-chip connections (Umiushi Ver.5)" 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 records loss of connector elasticity, broken rubber, and a ceramic chip broken by impact.

Mr. Okada responded with reinforcement, gentler connection angles, and eventually a wire-based redesign.

The January 2026 specification differs from earlier builds; current component prices do not cover a complete custom set.

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: two-chip connection problems

The OK Prostate Chip is a small device placed in the urethra (the urine passage) to act on the prostate. The angled two-chip design (Umiushi Ver.5) joins a leading chip and a second chip with a flexible connector. In December 2023, Mr. Okada described its rubber connection as preventing tangles and producing pressure against the urethra or bladder. The entries trace connection problems and later design changes.

A two-chip connection raised bleeding concerns before the first prototype

In an entry published in November 2020, a customer proposed an angled connection to target three possible sources of sensation. The customer anticipated that sharper angles could make removal difficult and cause bleeding. These were concerns about the proposed design, rather than a report of an injury.

Mr. Okada questioned the customer's explanation involving bladder-wall pressure but agreed to explore the concept. His proposal was to choose an existing leading chip and define the new design through the second chip and connection.

(Source: ok-lab's diary, published November 2020)
https://ok-lab.hatenablog.com/entry/2020/11/14/131426

The two-chip connection reached mold production after customer approval

In an entry published in November 2020, the customer accepted the prototype proposal and asked Mr. Okada to continue toward completion. Mr. Okada reported that mold production had begun. He considered the second chip potentially useful for other combinations, so he planned a larger firing batch.

Unlike earlier ceramic pieces, this second chip needed openings at both ends. The diary records the production plan, but does not record the customer's experience with the finished ceramic version.

(Source: ok-lab's diary, published November 2020)
https://ok-lab.hatenablog.com/entry/2020/11/28/121505

Standard bumps defined the two-chip connection at its planned launch

In an entry published in December 2020, Mr. Okada reported that the ceramic pieces had returned from firing. Surface bumps (raised features on the chips) were standard for this design, and he stated that no version without bumps existed. Sales were planned to begin the following week.

The leading piece carried the medium-length ceramic chip's price, while the second carried the short chip's price. The set required those chip purchases, 2 surface-bump options, and an angled-connection charge of ¥1,000 (about $6 at ¥156 = $1, rate as of 2026-09-04) tax excluded, as published in December 2020. Mr. Okada directed customers to account for each component and the additional custom work when ordering.

(Source: ok-lab's diary, published December 2020)
https://ok-lab.hatenablog.com/entry/2020/12/19/132929

A two-chip connection lost usable elasticity after seven reported uses

In an entry published in June 2022, the original proposer requested repair of a version with a screw-shaped second chip. The customer recalled only 7 uses, but reported that the rubber had lost so much elasticity that the device was unusable. The maker acknowledged that durability had not been considered during development.

If the connector had reached its lifespan, the maker said that lifespan was 2 years or less. Mr. Okada warned that rough use could shorten it further, with failure after a few uses when seeking stronger stimulation. The maker said future customers would need to accept the stated durability limit before ordering.

(Source: ok-lab's diary, published June 2022)
https://ok-lab.hatenablog.com/entry/2022/06/18/123201

A ceramic impact broke the two-chip connection customer's earlier set

In an entry published in March 2023, a customer requested another combined ceramic set, described as version 4+5. The customer reported that the previous chip broke after striking a ceramic toilet during removal. The report concerns a collision involving the ceramic piece.

Mr. Okada itemized the replacement's custom charges, including connection work and additional ceramic firing. The diary does not record how the replacement performed in use.

(Source: ok-lab's diary, published March 2023)
https://ok-lab.hatenablog.com/entry/2023/03/18/122146

The two-chip connection required an additional charge in April 2025

In an entry published in April 2025, a customer requested the angled set using short and medium-length ceramic chip order items. The order also included the surface-bump option. Mr. Okada explained that ¥1,100 (about $7 at ¥156 = $1, rate as of 2026-09-04) for connecting the chips was additional to the listed items.

The entry states that the customer paid that additional amount. The diary does not record how this particular finished set felt in use.

(Source: ok-lab's diary, published April 2025)
https://ok-lab.hatenablog.com/entry/2025/04/12/122910

Bulky attachments prompted another rethink of the two-chip connection

In an entry published in January 2026, Mr. Okada described why the older connector was relatively thick. Its internal cord passed through holes in the ceramic, with resin covering the attachment area. That description concerned the existing construction, rather than a newly announced size.

He thought newly introduced flexible-joint technology might make the angled set easier to use. The entry presents that possibility as his development idea, without recording customer results for a completed redesign.

(Source: ok-lab's diary, published January 2026)
https://ok-lab.hatenablog.com/entry/2026/01/10/122922

The redesigned two-chip connection carried new additional charges in January 2026

In an entry published in January 2026, Mr. Okada priced the redesigned connector separately from both ceramic chips. The standard additions were ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) for ceramic reinforcement (wire along the chips) and ¥2,000 (about $13 at ¥156 = $1, rate as of 2026-09-04) for connection work, all tax excluded. The diary stated the combined additional charge as ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) tax excluded.

Without full reinforcement, it quoted ¥3,000 (about $19 at ¥156 = $1, rate as of 2026-09-04) tax excluded, with wire attached over only short sections of each chip. The cheaper option still included a wire connection. Mr. Okada made full reinforcement the standard while allowing customers to request the shorter attachment.

(Source: ok-lab's diary, published January 2026)
https://ok-lab.hatenablog.com/entry/2026/01/31/122917

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The maker's answer to two-chip connection problems

Mr. Okada changed the connector's construction and angle after reports of deterioration and breakage.

Cable reinforcement addressed two-chip connection failures in a separate repair

In an entry published in June 2022, Mr. Okada described a separate repair request from a customer outside Japan. He said international shipping cost more than the repair, while translated exchanges made the circumstances harder to establish. The trial connector had 4 cable reinforcements intended to limit extreme bending.

He expected improved durability, but had not established whether that approach suited glass chips or screw-assisted combinations. His planned response to orders for the standard angled set was to supply the reinforced version.

(Source: ok-lab's diary, published June 2022)
https://ok-lab.hatenablog.com/entry/2022/06/18/123201

Gentler two-chip connection angles followed reports of torn rubber

In an entry published in December 2023, Mr. Okada said extreme connection angles had led to reports of rubber tearing. He was therefore making recent sets with a gentler bend. He also proposed curved auxiliary chips on silicone tubing for customers dissatisfied with the reduced angle.

The diary warned that customers could not easily adjust those curved parts' positions. Mr. Okada expected their spacing to be settled with OK Lab before shipment.

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

The two-chip connection gained a wire core in January 2026

In an entry published in January 2026, Mr. Okada described an older limit of about 60 degrees, later reduced to about 45 degrees. He reported that connection trouble reports stopped at the gentler angle. The redesign replaced the inner cord with nitinol wire (the flexible wire inside the new connector) and made ceramic reinforcement standard.

Mr. Okada claimed that the wire could maintain the connection's safety even if the rubber broke. The diary does not record long-term customer results for this redesign. Mr. Okada specified full reinforcement along the ceramic pieces as the standard arrangement.

(Source: ok-lab's diary, published January 2026)
https://ok-lab.hatenablog.com/entry/2026/01/31/122917

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 two-chip connection problems changed over time

The diary does not say what the current state is.

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OK Prostate Chip products related to two-chip connection problems

The current list prices the ceramic components and options separately.

Products that appear in these entries

(Source: ok-lab's diary, published April 2025)
https://ok-lab.hatenablog.com/entry/2025/04/12/122910

Products the diary mentioned as alternatives

(Source: ok-lab's diary, published January 2021)
https://ok-lab.hatenablog.com/entry/2021/01/09/130022

Custom angled sets (Umiushi Ver.5 and Ver.4+5): No matching product can be confirmed on the current list.

Curved auxiliary chips described in December 2023: No matching product can be confirmed on the current list.

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Common worries about two-chip connection problems

The questions concerned spacing, compatible chip combinations, and a replacement for the rubber connector.

"How far apart could a two-chip connection be?"

In an entry published in November 2020, the customer suggested a gap of 3mm–5mm, around 4mm, while asking for Mr. Okada's judgment. The customer acknowledged that a suitable gap depended on the connection material and flexibility. These figures were proposed dimensions, not a confirmed universal specification.

Mr. Okada's reply did not establish a tested spacing range. His proposal focused on the second chip's shape and the connection's position and angle.

(Source: ok-lab's diary, published November 2020)
https://ok-lab.hatenablog.com/entry/2020/11/14/131426

"Can a two-chip connection combine different chip sizes?"

In an entry published in January 2021, a customer asked about joining different ceramic sizes and shapes. Mr. Okada said he would accept arbitrary combinations if the customer understood the construction differences. He considered the purpose-designed connection stronger than an earlier broad-bodied ceramic pairing.

The diary does not record a completed order arising from that question. Mr. Okada favored the dedicated second chip or a screw-shaped auxiliary chip, which he considered safer by design.

(Source: ok-lab's diary, published January 2021)
https://ok-lab.hatenablog.com/entry/2021/01/09/130022

"Could six wires replace the rubber two-chip connection?"

In an entry published in June 2022, the original proposer suggested a six-wire structure as an alternative after the deterioration report. Mr. Okada thought it would weaken the pressure produced by the rubber's spring force. He explained that the proposed structure would follow a bend differently from the elastic connector.

The diary does not record a completed six-wire replacement or how it performed. Mr. Okada nevertheless thought the stronger six-wire version might provide some effect.

(Source: ok-lab's diary, published June 2022)
https://ok-lab.hatenablog.com/entry/2022/06/18/123201

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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.