Can I get a damaged or older chip replaced? | The diary records individual replacement offers [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 (Okada Comfortable Life Laboratory). Only the entries about "replacement for damaged or older devices" 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

OK Lab, a small company in Japan, has offered replacements for damaged chips and some older devices.

Mr. Okada's responses included repairs, replacements, refunds, and specific limits.

The latest supplied entry, January 2026, describes replacement after inspection for reported stainless-steel defects.

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: damaged chip replacement

The OK Prostate Chip is a small device placed in the urethra to act on the prostate. Replacement reports concern broken bodies, damaged surfaces, and failures around attached parts. Some chips use resin (a coating and bonding material) to secure a retrieval thread (the attached thread for taking the chip out). These entries also cover an external plate used to conceal the penis, whose older design received an upgrade offer.

Chip replacement for peeling coating depended on shipment date and photographs

In an entry published in February 2018, Mr. Okada reported 2 peeling failures involving linked chips. In one report, the thread and resin lifted together. He said thicker coating was imperfect and asked customers to accept no further replacement if peeling happened again.

His offer covered affected chips shipped in January 2018. Mr. Okada asked those customers to send photographs for replacement.

(Source: ok-lab's diary, published February 2018)
https://ok-lab.hatenablog.com/entry/20180214/1518601774

Cracked yellow glass led to chip replacement using pink glass

An entry published in January 2019 described a custom yellow-glass piece that cracked after about 1 week, without being dropped. Mr. Okada supplied a replacement made from his usual pink glass.

He suspected a problem with the yellow glass rod; the customer accepted that explanation. No matching product can be confirmed on the current list. For concerns about glass breakage, Mr. Okada suggested resin chips.

(Source: ok-lab's diary, published January 2019)
https://ok-lab.hatenablog.com/entry/2019/01/26/152042

A broken glass chip prompted a replacement request after bladder injury

In an entry published in January 2019, a customer reported that a twisted medium-length glass chip broke inside their body. The fragment entered the bladder and passed about a week later. A hospital examination reportedly found widespread injury to the bladder lining.

The customer requested a plain single glass chip instead of an unshipped order. The diary does not record whether that order was changed. Mr. Okada apologized and said avoiding use was his answer for anyone worried about such injury.

(Source: ok-lab's diary, published January 2019)
https://ok-lab.hatenablog.com/entry/2019/01/26/152042

A trapped curved chip required surgery, beyond any replacement discussion

A separate account published in January 2019 concerned a thick, sharply curved chip that entered the bladder. The customer reported that it would not pass and was retrieved through endoscopic surgery (a hospital procedure for retrieving the chip).

Mr. Okada apologized for the customer's ordeal. He said a future incident leading to litigation could force him to stop selling prostate chips.

(Source: ok-lab's diary, published January 2019)
https://ok-lab.hatenablog.com/entry/2019/01/26/152042

Sharp edges on an unused glass part prompted chip replacement

In an entry published in May 2019, a customer questioned the quality of an unused separate male glass chip. They reported a burr (a sharp raised edge) at the glass boundary and a pointed thread attachment where the thread broke.

The customer feared receiving the same quality again. Mr. Okada acknowledged a product defect and asked them to allow time for a remake.

(Source: ok-lab's diary, published May 2019)
https://ok-lab.hatenablog.com/entry/2019/05/25/144939

Repeated delivery breakage expanded the customer's ceramic chip replacement options

An entry published in July 2019 described a ceramic chip arriving broken despite apparently intact packaging. Mr. Okada remade it, but the replacement arrived broken at almost the same point.

After 2 failed deliveries, he offered 4 options: refund, another remake, a thicker chip, or a different product. The customer chose the thicker version. Mr. Okada quoted about 5 weeks for that option.

(Source: ok-lab's diary, published July 2019)
https://ok-lab.hatenablog.com/entry/2019/07/20/151609

Ceramic chip replacement was offered after breakage during early use

In an entry published in March 2020, a customer reported a twisted medium-length ceramic chip chipping after the 2nd insertion. They reported that the fragment subsequently left their body, but they could not recover it.

The customer was considering another purchase and asked about thicker models. Mr. Okada treated the breakage as an initial defect despite not knowing its cause. He offered a newly made replacement and asked for about 1 week.

(Source: ok-lab's diary, published March 2020)
https://ok-lab.hatenablog.com/entry/2020/03/14/141804

---

The maker's answer to damaged chip replacement

The diary records different remedies for different defects, including limits on repeat exchanges and older-product refunds.

An older chip replacement was offered for the repair charge alone

In an entry published in March 2019, a customer requested another thread repair on an older resin chip. Mr. Okada recognized previous repair work and associated it with a period when threads could detach.

He proposed a new chip because repeated coating would add thickness. The customer accepted, but delivery is not recorded. No matching product can be confirmed on the current list. Mr. Okada offered replacement for the repair charge alone, with a warning that the shape would differ.

(Source: ok-lab's diary, published March 2019)
https://ok-lab.hatenablog.com/entry/2019/03/16/165528

A damaged vibrating chip replacement offer led to a material-change request

In an entry published in April 2019, a customer reported glass breaking away from a custom vibrating chip after about 1 hour. They reported no injury because the broken piece remained attached.

Mr. Okada found glass damage and offered to remake an equivalent item, while acknowledging no fundamental solution to glass cracking. The customer then requested resin instead; completion is not recorded. No matching product can be confirmed on the current list. Mr. Okada asked the customer to consider the breakage risk when deciding on the pending products.

(Source: ok-lab's diary, published April 2019)
https://ok-lab.hatenablog.com/entry/2019/04/27/153239

Sharp ceramic connections received repair offers rather than immediate chip replacement

An entry published in June 2019 concerned 2 ceramic chips: a large curved model and a short comma-shaped model. Their owner reported sharp thread connections and pain, and questioned whether prior use prevented an exchange.

Mr. Okada initially offered to round the connections. After receiving the chips, he planned rubber protection at the connections instead. He also invited customers concerned about this feature to request rubber treatment when ordering.

(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/29/143536

Ceramic chip replacement developed into a temporary sales pause and redesign

In an entry published in July 2019, Mr. Okada suspended medium-length ceramic chip sales over strength concerns. He announced a version with 50% more thickness.

An entry published in August 2019 reported resumed sales and completed replacements for customers who had reported trouble. Those L-size examples were about 4mm thick. The July response asked affected customers awaiting the reinforced version to allow time for production.

(Source: ok-lab's diary, published July 2019)
https://ok-lab.hatenablog.com/entry/2019/07/27/130537

(Source: ok-lab's diary, published August 2019)
https://ok-lab.hatenablog.com/entry/2019/08/10/125102

Old device replacement covered requested plate upgrades, with eligibility limits

An entry published in April 2023 offered free replacement of older plates containing numerous small holes. The replacement was a wide-hole plate (an external plate with an enlarged opening for concealing the penis).

Mr. Okada limited the invitation to owners who had already achieved concealment with the earlier design. He said the change would not solve an existing inability to achieve it. No matching product can be confirmed on the current list. Mr. Okada invited eligible owners to request the upgrade by email and allow production time.

(Source: ok-lab's diary, published April 2023)
https://ok-lab.hatenablog.com/entry/2023/04/22/123057

Stainless-steel chip replacement followed inspection of a surface that had lost its shine

An entry published in January 2026 followed an earlier shipment of the wrong size. The customer then reported a thread-hole burr on a stainless-steel chip and requested more careful inspection.

The returned surface had lost its shine after the customer's polishing. OK Lab considered continued use concerning and chose a new replacement. Mr. Okada said future defect reports would receive inspection and replacement because OK Lab could not undertake suitable corrective polishing.

(Source: ok-lab's diary, published January 2026)
https://ok-lab.hatenablog.com/entry/2026/01/24/122909

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 damaged chip replacement changed over time

The diary does not say what the current state is.

---

OK Prostate Chip products related to damaged chip replacement

Current list prices identify products involved in these reports; the historical replies describe their replacement treatment.

Products that appear in these entries

(Source: ok-lab's diary, published January 2019)
https://ok-lab.hatenablog.com/entry/2019/01/26/152042

(Source: ok-lab's diary, published May 2019)
https://ok-lab.hatenablog.com/entry/2019/05/25/144939

(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/29/143536

(Source: ok-lab's diary, published March 2020)
https://ok-lab.hatenablog.com/entry/2020/03/14/141804

Products the diary mentioned as alternatives

The diary names no alternative.

---

Common worries about damaged chip replacement

The replies address defects found before use, disputed surface marks, and return requirements for older-device upgrades.

"Is chip replacement possible before the first use?"

In an entry published in May 2019, a customer requested replacement after finding a central scratch on an unused single glass chip. Mr. Okada acknowledged an initial defect. He promised to make and send a replacement; delivery is not recorded.

(Source: ok-lab's diary, published May 2019)
https://ok-lab.hatenablog.com/entry/2019/05/25/144939

"Can a scratched glass chip qualify for replacement?"

In an entry published in June 2019, a customer sent a photograph of a mark on a newly received two-chip glass model. Mr. Okada believed its type and size probably would not affect practical use, but still agreed to remake it. He quoted about 1 week for production, with shipment expected late the following week.

(Source: ok-lab's diary, published June 2019)
https://ok-lab.hatenablog.com/entry/2019/06/29/143536

"Does an old device replacement require a return?"

In an entry published in April 2023, an owner asking about the wide-hole upgrade requested return instructions. OK Lab replied that the existing plate did not need to be returned. Mr. Okada encouraged owners to request the replacement even if they were satisfied with the earlier plate.

(Source: ok-lab's diary, published April 2023)
https://ok-lab.hatenablog.com/entry/2023/04/29/123107

---

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.