Can I add features to a vibrating chip? | Size and connections limit the options [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 "limits when adding features to vibrating 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

Added motors, electrodes, and stoppers can increase size or conflict with a vibrating chip's connections.

Mr. Okada changed layouts, restricted combinations, and sometimes declined custom requests.

Standard products remain listed; the latest stopper proposal still carried a warning about added thickness.

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: adding features to a vibrating chip

The OK Prostate Chip is a small device placed in the urethra (the urine passage) to stimulate the prostate. Motorized versions add vibration; custom designs may also include electrodes (contacts for electrical stimulation), shaped surfaces, or stoppers intended to limit movement. These parts sit on the chip, around its motor, or along its cable. Mr. Okada describes limits involving size, waterproofing, attachment strength, and the space needed to connect different parts.

A vibrating chip stopper became relevant after unintended movement into the bladder

In an entry published in September 2019, a customer discussing a three-motor order reported that an L-size chip had fallen into their bladder. The customer said it came out after a while, without describing how. The workshop suggested an external cable stopper as possible protection against complete inward movement, expressing an expectation rather than a confirmed result.

(Source: ok-lab's diary, published September 2019)
https://ok-lab.hatenablog.com/entry/2019/09/28/140637

Vibrating chip waterproofing remained unresolved for the requested resin in October 2021

In an entry published in October 2021, a prospective buyer asked about a vibrating chip made from biocompatible resin (the requested chip material). Mr. Okada said this was possible outside the motor section, but waterproofing that section with this material remained unresolved. The customer postponed buying pending improvements, and Mr. Okada supported their cautious consideration.

(Source: ok-lab's diary, published October 2021)
https://ok-lab.hatenablog.com/entry/2021/10/02/125825

Electrodes made a vibrating chip too thick for some existing users

In an entry published in April 2022, Mr. Okada discussed requests combining multiple motors with electrodes. The electrode wiring added another layer over the completed motor section, substantially increasing thickness. He cautioned that customers who could barely accommodate an ordinary vibrating chip might find the combined design unsuitable.

(Source: ok-lab's diary, published April 2022)
https://ok-lab.hatenablog.com/entry/2022/04/02/123050

A vibrating chip stopper was cancelled because its cable was incompatible

In a separate case published in April 2022, a customer requested a ceramic medium-length vibrating chip with a thicker, stiffer cable. The workshop accepted the cable change but cancelled the parallel-cable stopper because it could not fit that cable. The diary does not record how the completed combination felt in use; the workshop's answer excluded the incompatible stopper.

(Source: ok-lab's diary, published April 2022)
https://ok-lab.hatenablog.com/entry/2022/04/02/123050

Thick vibrating chip connections prompted a change away from four-wire support

In an entry published in June 2022, a customer reported that bulky connections prevented several earlier chips from fitting. Mr. Okada acknowledged that four-wire support (an earlier supporting cable structure) and ordinary cable connections had added about 2mm at the rear.

He said the earlier four-wire support had ended and described newer, thinner connections relying on metal for strength. He proposed that newer connection approach for thinner builds, with further developments dependent on testing.

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

Removing one motor made a combined vibrating chip less bulky

In an entry published in June 2024, a customer wanted a smaller electrode-and-motor chip after finding the previous version bulky. Mr. Okada produced a two-motor version using 8mm motors that were 2mm thick, leaving the tip without a motor.

The finished maximum dimensions were 11mm wide and 6.5mm thick; the entry does not report the customer's subsequent experience. Mr. Okada considered it potentially suitable for customers who could accommodate his larger ceramic chips.

(Source: ok-lab's diary, published June 2024)
https://ok-lab.hatenablog.com/entry/2024/06/08/123008

Vibrating chip motor size limited texture before quality concerns ended the order

In entries published in January 2025, a customer repeatedly revised a request for a textured motorized chip. The 8mm motor assembly occupied 14mm: 1mm of covering resin, the motor itself, and 5mm of connections; finished width was about 10mm. Staff initially doubted the small surface details, but Mr. Okada later drew a feasible design priced like the screw-shaped version.

He subsequently warned that externally sourced motors could be defective, with substantial variation in durability and operating noise. Despite the earlier design approval, he declined the entire custom request. He suggested considering a simple standard vibrating model instead, while acknowledging the limits of his performance assessments.

(Source: ok-lab's diary, published January 2025)
https://ok-lab.hatenablog.com/entry/2025/01/11/122910

(Source: ok-lab's diary, published January 2025)
https://ok-lab.hatenablog.com/entry/2025/01/18/123007

(Source: ok-lab's diary, published January 2025)
https://ok-lab.hatenablog.com/entry/2025/01/25/122940

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The maker's answer to adding features to a vibrating chip

The diary describes changing layouts, rejecting incompatible parts, and limiting motor or wire choices.

Vibrating chip power and finished dimensions both limited combined designs

In an entry published in June 2022, a customer who had reported being unable to urinate asked about a three-motor, two-electrode chip. Mr. Okada estimated about 8mm thickness, with width exceeding 12mm where electrodes covered a 10mm motor.

He said multiple motors vibrated substantially more at 4.5V or above than at 3V, while warning that prolonged operation at 6V was dangerous. The diary does not record whether this order was completed. Mr. Okada also suggested considering another prototype once its testing and pricing were available.

(Source: ok-lab's diary, published June 2022)
https://ok-lab.hatenablog.com/entry/2022/06/04/123036

A vibrating chip wire needed room to move independently from its cable

In an entry published in April 2025, a customer wanted a curved support combined with a short ceramic vibrating chip. Mr. Okada said shape-memory wire (wire used to recover a set shape) was extremely difficult to combine alongside other materials, including parallel and twisted cables.

His prototype kept the support loop and power cable largely independent. The attachment required about 15mm of resin beyond the motor, so the forward chip section was shortened by about 10mm. Mr. Okada offered this separate-loop arrangement in response to the request.

(Source: ok-lab's diary, published April 2025)
https://ok-lab.hatenablog.com/entry/2025/04/26/122909

An integrated vibrating chip stopper looked possible but remained a proposal

In an entry published in October 2025, Mr. Okada described an integrated stopper made for an electrode order. He thought its nitinol wire could share the resin anchorage surrounding a motor, potentially extending the idea to every vibrating chip. This was a proposed possibility; Mr. Okada invited requests for the arrangement.

(Source: ok-lab's diary, published October 2025)
https://ok-lab.hatenablog.com/entry/2025/10/18/122911

A movable vibrating chip joint required larger motors and ceramic parts

In an entry published in February 2026, Mr. Okada presented a movable joint (a flexible connection between chip and motor). Its wire connection allowed thinner resin coverage, with joint diameters from about 3mm to 5mm.

He excluded 6mm motors because he doubted connection reliability; the design supported 8mm or 10mm motors and ceramic chips only. Published additional charges were ¥4,000 (about $26 at ¥156 = $1, rate as of 2026-09-04) tax excluded for short or medium-length ceramic chips, and ¥5,000 (about $32 at ¥156 = $1, rate as of 2026-09-04) tax excluded for extended or long types. Mr. Okada cautioned that strong or prolonged bladder vibration might be harmful.

(Source: ok-lab's diary, published February 2026)
https://ok-lab.hatenablog.com/entry/2026/02/14/121602

Twin-wire vibrating chip add-ons restricted surface shapes and exposed metal

In another entry published in February 2026, Mr. Okada reported reduced vibration in a 15cm covered movable prototype. He attributed this to thicker wire and a closely fitting tube, then described a twin-wire design (two exposed parallel connecting wires).

With 0.4mm wire, twists and raised bumps were generally unavailable. With 0.3mm wire, bumps were generally possible, although irregular arrangements could remain incompatible. Mr. Okada warned that the exposed-wire design was unsuitable for people with metal allergies.

(Source: ok-lab's diary, published February 2026)
https://ok-lab.hatenablog.com/entry/2026/02/21/122935

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 adding features to a vibrating chip changed over time

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OK Prostate Chip products related to adding features to a vibrating chip

The current list includes standard products named in these requests.

Products that appear in these entries

(Source: ok-lab's diary, published April 2022)
https://ok-lab.hatenablog.com/entry/2022/04/02/123050

(Source: ok-lab's diary, published April 2025)
https://ok-lab.hatenablog.com/entry/2025/04/26/122909

Products the diary mentioned as alternatives

The diary names no alternative.

Two availability limits apply to the historical designs.

• Earlier four-wire support: Mr. Okada said it had ended in June 2022.
• Custom combined chips, textured builds, curved supports, movable joints, twin-wire versions, and apple-shaped stoppers: No matching product can be confirmed on the current list.

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Common worries about adding features to a vibrating chip

Each proposed stopper or motor position had its own construction limits.

"Can vibrating chip add-ons include motors at both ends?"

In an entry published in June 2024, Mr. Okada compared motor positions in a connected-chip design. The motor section could not have a twist (a twisted chip shape), leaving his prototype partly flat. He reported a milder sensation from the changed position and offered one motor in either the bladder-side or prostate-side section because two locations were then impractical.

(Source: ok-lab's diary, published June 2024)
https://ok-lab.hatenablog.com/entry/2024/06/15/123132

"Can a vibrating chip stopper sit directly over the motor?"

In an entry published in November 2025, a customer requested a petal-shaped stopper at the forward end of a motorized rear chip. The workshop refused that position because the motor occupied the space needed for the stopper's base.

The workshop provided a quotation conditional on the customer's acceptance of the revised proposal. The workshop proposed a position about 12mm from that tip, within the 3cm gap between chips.

(Source: ok-lab's diary, published November 2025)
https://ok-lab.hatenablog.com/entry/2025/11/08/122932

"Will an apple-shaped vibrating chip stopper make positioning easier?"

In an entry published in May 2026, a customer asked about an apple-shaped stopper to hold the vibrating section at a chosen position. Staff said it could be made, but placing it on the cable would make the shaft substantially thicker. The diary does not record whether the customer ordered it; staff offered the combination with a warning that insertion would become more difficult.

(Source: ok-lab's diary, published May 2026)
https://ok-lab.hatenablog.com/entry/2026/05/02/122917

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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.