What does milking mean? | The old chip name referred to movement [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 what milking means 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

Mr. Okada used milking to describe movement inside a soft tube, but readers understood another sexual meaning.

He accepted advice to change the product name because the earlier wording caused confusion.

An entry published in March 2024 confirms adoption of the Prostate Chip name.

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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: what milking means

The OK Prostate Chip is a small device placed inside the urethra (the urine passage) to act on the prostate. In these entries, milking describes moving liquid or a small object inside a soft tube. Mr. Okada applied that meaning to a chip within the urethra, with the prostate as its intended destination. The diary also records objections from people who understood milking as stimulation associated with semen release.

The original milking meaning concerned movement inside a soft tube

In an entry published in October 2017, Mr. Okada explained milking through the idea of moving liquid within soft tubing. He compared the term with hand milking and said nurses also used it when dealing with medicine left inside medical tubes. His proposed system applied that idea to a microchip, meaning a small physical device, a few centimeters long.

Mr. Okada described a system intended to allow both placement near the prostate and retrieval through the urethra. The design included a retrieval thread (a thread intended to help remove the chip), with a supporting chip also mentioned. He asked readers to watch for further information about the planned product.

(Source: ok-lab's diary, published October 2017)
https://ok-lab.hatenablog.com/entry/20171003/1507036624

A September 2018 contributor used milking to describe semen release

An entry published in September 2018 included a contributor's correction about the body structures discussed in an earlier post. The contributor referred to the seminal vesicles (paired structures discussed there in connection with semen release) and emphasized their separate positions. They argued that a device intended to act directly on those structures would need a divided tip.

The contributor associated milking with a gentle ejaculation following pressure intended to act on those structures, claiming a response without other sexual stimulation. Mr. Okada replied that he hoped to offer a chip specifically for that purpose in the future. The diary does not record whether that proposed device was developed.

(Source: ok-lab's diary, published September 2018)
https://ok-lab.hatenablog.com/entry/20180901/1535779541

The July 2021 draft kept milking terminology while acknowledging difficulty

In an entry published in July 2021, a draft manual defined milking as moving liquid remaining inside a tube through pressure on that tube. The term appeared in its explanation of chip movement, continuing the mechanical meaning used in the earlier announcement. The draft also contained a separate troubleshooting item about difficulty with milking.

Mr. Okada's text linked that difficulty to a very firm erection and discussed reduced arousal as part of its proposed response. The diary does not record whether that explanation was confirmed in an individual customer's case. The draft advised consulting a doctor when someone was already receiving treatment or noticing physical problems.

(Source: ok-lab's diary, published July 2021)
https://ok-lab.hatenablog.com/entry/2021/07/24/125923

A March 2024 milking discussion included a priced experimental attachment

In an entry published in March 2024, Mr. Okada described a liquid-delivery attachment (experimental tubing intended to carry liquid deeper into the urethra). He wanted lubrication near the chip and reported making an attachment for that purpose. He offered a 4mm tube section up to 25cm long for ¥500, (about $3 at ¥156 = $1, rate as of 2026-09-04) tax excluded, as published in March 2024.

No matching product can be confirmed on the current list. The diary does not record whether a reader bought this attachment or how it felt in that person's use. Mr. Okada said he did not particularly recommend his improvised version, because more convenient equipment might already exist.

(Source: ok-lab's diary, published March 2024)
https://ok-lab.hatenablog.com/entry/2024/03/09/122635

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The maker's answer to what milking means

Mr. Okada distinguished his intended meaning through explanations, while accepting that the product needed a clearer name.

The first milking launch awaited a name and written instructions

In an entry published in October 2017, Mr. Okada said the device itself was ready for release, but its public explanation was unfinished. He identified the missing instructions and unsettled product name as reasons the launch would take more time.

At that stage, the announcement described a developed system whose final name had yet to be decided. Mr. Okada asked readers to allow more time before release and said further product information would follow.

(Source: ok-lab's diary, published October 2017)
https://ok-lab.hatenablog.com/entry/20171003/1507036624

The milking manual separated explanations from promises about results

In an entry published in July 2021, Mr. Okada described objections a lawyer raised after reviewing his plan for written instructions. He still wanted buyers to receive an explanation, citing their wish for information and his own sense of responsibility. He then separated the product description from the operating manual, presenting the latter as a joke manual.

That label accompanied statements that effects were not guaranteed and that the document disclaimed responsibility for accidents or damage. The diary does not record which version of these instructions individual customers received. Mr. Okada's proposed text advised medical consultation for someone whose condition worsened without any benefit.

(Source: ok-lab's diary, published July 2021)
https://ok-lab.hatenablog.com/entry/2021/07/24/125923

Milking attachment tests exposed limits in the maker's experimental tubing

In an entry published in March 2024, Mr. Okada described practical limits he encountered while testing his liquid-delivery attachment. He reported that tubing with an inner diameter of 1mm passed water but became blocked with a thicker test liquid. His account said that liquid required an opening with an inner diameter of 2mm.

The main nozzle used tubing with an outer diameter of 4mm and an inner diameter of 2mm. According to Mr. Okada, thinner tubing bent during testing and did not reach the intended area. His stated preference remained the general principle of liquid movement that he called milking.

(Source: ok-lab's diary, published March 2024)
https://ok-lab.hatenablog.com/entry/2024/03/09/122635

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How what milking means changed over time

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OK Prostate Chip products related to what milking means

No current product is directly tied to this topic.

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Common worries about what milking means

The recorded questions concern what the old name implied and whether the same word also described liquid movement.

"Could the milking name suggest a different sexual function?"

In an entry published in November 2017, Mr. Okada reported advice that the early name could mislead readers. The person offering that advice said milking already described anal stimulation of the prostate associated with semen release. Mr. Okada explained that he had borrowed the word from a doctor's discussion of urine remaining in the urethra after urination.

He understood its broader meaning as changing the position of something inside a narrow, flexible tube. Although he considered his usage reasonable, he respected the other person's knowledge of the sexual terminology. He accepted the advice as a reason to consider changing the name, while saying no final decision had been reached.

(Source: ok-lab's diary, published November 2017)
https://ok-lab.hatenablog.com/entry/20171129/1511963864

"Did the old milking name promise semen release?"

In an entry published in March 2024, Mr. Okada recalled someone knowledgeable about the subject asking whether the chip had a semen-expressing function. That person understood milking as pressure on the seminal vesicles associated with semen release. Mr. Okada explained that the earlier small chip's name, Milking Microchip, referred to the idea of moving it toward the prostate.

He reported accepting a separate suggestion to call the product Prostate Chip, and said he was glad to have changed the confusing name. The entry gives a retrospective explanation; it does not identify the exact date when the change took place. His conclusion supported the suggested name because it avoided the misunderstanding attached to the earlier label.

(Source: ok-lab's diary, published March 2024)
https://ok-lab.hatenablog.com/entry/2024/03/09/122635

"Could milking avoid the need for a long tube?"

An entry published in March 2024 included a reader's response to Mr. Okada's interest in delivering lubricant farther inside the urethra. The reader asked whether an attachment or the principle of milking could address that aim, and raised concerns about maintaining a long tube. Mr. Okada agreed that the liquid-moving principle was, in his view, the most reliable approach.

He explained that his reason for experimenting with an attachment was to concentrate lubrication near the intended area instead of along the whole passage. The diary does not record a reply from this reader or any report of their own use. Mr. Okada continued to favor the general approach he called milking, despite having explored the attachment.

(Source: ok-lab's diary, published March 2024)
https://ok-lab.hatenablog.com/entry/2024/03/09/122635

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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.