EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618 · Bridge TO Life · KDN · Jun 17, 2025 · Gastroenterology, Urology
Device Facts
Record ID
K243618
Device Name
EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
Applicant
Bridge TO Life
Product Code
KDN · Gastroenterology, Urology
Decision Date
Jun 17, 2025
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 876.5880
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is intended for in situ topical cooling during surgical procedures and during intraoperative recovery from an organ transplant donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient.
Device Story
EasiSlush® is a sterile, non-pyrogenic, isotonic 0.9% sodium chloride solution provided in a 2L flexible, non-PVC bag. Used by surgeons and transplant teams in clinical settings (OR, organ recovery), the solution is pre-cooled to create a slush. During organ recovery or open surgery, the slush is applied topically to organ surfaces to induce regional hypothermia, reducing metabolic activity and protecting tissues from ischemia. For storage and transport, the slush surrounds a primary organ bag within secondary/tertiary containers, which are then placed in insulated transport boxes with non-sterile ice. The device provides a physical cooling medium; it does not involve active electronic monitoring or automated processing. Benefits include preservation of organ viability and tissue protection during surgical procedures.
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
0.9% Sodium Chloride solution (USP monograph); 300 mOsmol/kg; pH 4.5–7.0. Provided in 2L sterile, PVC-free flexible bag. Terminal gamma irradiation sterilization. Biocompatible per ISO 10993-1/2/5/10/12. No electronic components, software, or connectivity.
Indications for Use
Indicated for topical cooling of in situ abdominal donor organs during intraoperative recovery, maintenance of organ hypothermia during storage and transport, and topical cooling of organs during open surgical procedures including cardiovascular, abdominal, and transplant surgeries.
Regulatory Classification
Identification
An isolated kidney perfusion and transport system and accessories is a device that is used to support a donated or a cadaver kidney and to maintain the organ in a near-normal physiologic state until it is transplanted into a recipient patient. This generic type of device may include tubing, catheters, connectors, an ice storage or freezing container with or without bag or preservatives, pulsatile or nonpulsatile hypothermic isolated organ perfusion apparatus with or without oxygenator, and disposable perfusion set.
{0}
FDA U.S. FOOD & DRUG ADMINISTRATION
June 17, 2025
Bridge to Life
Mark Harper
Compliance Manager
707 Skokie Boulevard, Suite 340
Northbrook, Illinois 60062
Re: K243618
Trade/Device Name: EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
Regulation Number: 21 CFR 876.5880
Regulation Name: Isolated Kidney Perfusion And Transport System And Accessories
Regulatory Class: Class II
Product Code: KDN
Dated: May 16, 2025
Received: May 19, 2025
Dear Mark Harper:
We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device"
U.S. Food & Drug Administration
10903 New Hampshire Avenue
Silver Spring, MD 20993
www.fda.gov
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K243618 - Mark Harper
Page 2
(https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reporting-combination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-devices/medical-device-safety/medical-device-reporting-mdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
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K243618 - Mark Harper
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Sincerely,
Maura Rooney -S
Maura Rooney
Assistant Director
DHT3A: Division of Renal, Gastrointestinal, Obesity, and Transplant Devices
OHT3: Office of Gastrorenal, ObGyn, General Hospital, and Urology Devices
Office of Product Evaluation and Quality
Center for Devices and Radiological Health
Enclosure
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DEPARTMENT OF HEALTH AND HUMAN SERVICES
Food and Drug Administration
Indications for Use
Form Approved: OMB No. 0910-0120
Expiration Date: 07/31/2026
See PRA Statement below.
510(k) Number (if known)
K243618
Device Name
EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
Indications for Use (Describe)
EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is intended for topical cooling of in situ, abdominal donor organs during intraoperative recovery from the donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient. EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is used to establish, and maintain hypothermia of donor organs during recovery, storage, and transport.
It is also indicated for use during open surgical procedures such as cardiovascular, abdominal, and transplant surgeries.
Organ Recovery
Prior to organ recovery, EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is delivered to the open peritoneal cavity of the donor to assist in creating hypothermia by topically cooling external surfaces of organs for recovery. During organ recovery, if ice crystals are no longer visible, the temperature of the saline solution will begin to rise and additional slushed solution may be delivered per established transplant team procedures. (Temperature rise may be assessed with temperature probes, being careful that the probe is measuring the solution and is not in contact with the organ).
Organ Storage/Transport
For organ storage/transport, EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) may be used to topically cool external surfaces of a sterile, sealed, primary organ bag containing chilled preservation solution and the organ. In this application, the slushed solution may be added to a secondary bag or to a tertiary hard container to surround the primary organ bag. Once bagged, the organ can be placed in a bed of non-sterile ice in an insulated transport container, which is then closed. Actual use should follow standard practices of the OPO or hospital for transporting and storing specific types of donor organs using sterile, slush solutions.
Surgical Procedure
During surgical procedures, EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is delivered to assist in creating hypothermia by topically cooling external surfaces of organs. During the procedure, if ice crystals are no longer visible, the temperature of the saline solution will begin to rise and additional slushed solution may be delivered per established surgical team procedures.
Type of Use (Select one or both, as applicable)
☑ Prescription Use (Part 21 CFR 801 Subpart D)
☐ Over-The-Counter Use (21 CFR 801 Subpart C)
CONTINUE ON A SEPARATE PAGE IF NEEDED.
FORM FDA 3881 (8/23)
Page 1 of 2
PSC Publishing Services (301) 443-6740
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This section applies only to requirements of the Paperwork Reduction Act of 1995.
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FORM FDA 3881 (8/23)
Page 2 of 2
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K243618: Traditional 510(k), EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618
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# K243618: 510(k) Summary
## 1.0 SUBMITTER
Bridge to Life Ltd
707 Skokie Blvd, Ste. 340
Northbrook, IL 60062
Contact Person: Mark Harper
Phone: 847-796-3070
Fax: 803-753-9798
Email: m.harper@b2ll.com
Date Prepared: November 22nd, 2024
## 2.0 DEVICE
Proprietary Name: EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
Common Name: EasiSlush® Slush Solution
Classification Name: Isolated kidney perfusion and transport system and accessories
Device Classification: Class II, 876.5880
Product Code: KDN
## 3.0 PREDICATE DEVICE
| Company | Device | K Number | Date Cleared |
| --- | --- | --- | --- |
| Bridge to Life | EasiSlush® | K191006 | Sept. 24, 2019 |
## 4.0 DEVICE DESCRIPTION
EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is a clear, colorless 0.9% Sodium Chloride solution for preparation of slushed solution to provide hypothermia during the recovery, storage, and transport of donor organs for transplantation and to induce regional hypothermia in certain surgical procedures such as open heart and kidney procedures by direct application of slushed solution. The solution is sterile, non-pyrogenic, isotonic and is contained in a 2L sterile, flexible, non-PVC bag.
## 5.0 INTENDED USE
EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is intended for in situ topical cooling during surgical procedures and during intraoperative recovery from an organ transplant donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient.
## 6.0 INDICATIONS FOR USE
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K243618: Traditional 510(k), EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618
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EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is intended for topical cooling of in situ, abdominal donor organs during intraoperative recovery from the donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient. EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is used to establish, and maintain hypothermia of donor organs during recovery, storage, and transport.
It is also indicated for use during open surgical procedures such as cardiovascular, abdominal, and transplant surgeries.
## Organ Recovery
Prior to organ recovery, EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is delivered to the open peritoneal cavity of the donor to assist in creating hypothermia by topically cooling external surfaces of organs for recovery. During organ recovery, if ice crystals are no longer visible, the temperature of the saline solution will begin to rise and additional slushed solution may be delivered per established transplant team procedures. (Temperature rise may be assessed with temperature probes, being careful that the probe is measuring the solution and is not in contact with the organ).
## Organ Storage/Transport
For organ storage/transport, EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) may be used to topically cool external surfaces of a sterile, sealed, primary organ bag containing chilled preservation solution and the organ. In this application, the slushed solution may be added to a secondary bag or to a tertiary hard container to surround the primary organ bag. Once bagged, the organ can be placed in a bed of non-sterile ice in an insulated transport container, which is then closed. Actual use should follow standard practices of the OPO or hospital for transporting and storing specific types of donor organs using sterile, slush solutions.
## Surgical Procedure
During surgical procedures, EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250) is delivered to assist in creating hypothermia by topically cooling external surfaces of organs. During the procedure, if ice crystals are no longer visible, the temperature of the saline solution will begin to rise and additional slushed solution may be delivered per established surgical team procedures.
## 7.0 SUBSTANTIAL EQUIVALENCE DISCUSSION
## 7.1 Historical 510(k) Clearance
EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is a clear, colorless, 0.9% Sodium Chloride solution for the preparation of slushed solution. The solution is sterile, non-pyrogenic, isotonic and is contained in a 2L sterile, flexible, non-PVC bag. EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) received 510k clearance in 2019, under K191006, as a Class II medical device for the intended use of establishing and maintaining regional hypothermia of donor organs during recovery, storage, and transport.
## 7.2 Summary of Key Feature Changes
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K243618: Traditional 510(k), EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618
Page 3 of 7
This 510(k) submission is to expand the EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) Indications for Use for surgical procedures, such as open heart and kidney surgeries, for the same intended use of establishing and maintaining topical hypothermia by direct application of slushed saline. There have been no changes to the technological characteristics from the predicate device to the subject device. There are no changes to the formulation, method of use, packaging, sterilization method, slush preparation, delivery method, or mode of action by which the devices achieve their effects.
To illustrate the substantial equivalence of subject EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) to the predicate EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) cleared in 2019, a high-level comparison is provided in Table 1.
Table 1. Comparative Summary of the Subject EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) with the Predicate EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) (cleared under K191006)
| Detail and Technological Characteristic | Previously Cleared EasiSlush® (K191006) | Under Review | Comparison |
| --- | --- | --- | --- |
| Device | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) | |
| 510k Number | K191006 | K243618 | |
| Manufacturer | Bridge to Life 707 Skokie Boulevard Suite 340, Northbrook, IL 60062 | Bridge to Life 707 Skokie Boulevard Suite 340, Northbrook, IL 60062 | No Change |
| Classification & Product Code | 876.5880; KDN | 876.5880; KDN | No Change |
| Device Regulation Description | Isolated kidney perfusion and transport system and accessories | Isolated kidney perfusion and transport system and accessories | No Change |
| Common Name | 0.9% Saline Slush Solution | 0.9% Saline Slush Solution | No Change |
| DESCRIPTION, INDICATIONS, & INTENDED USE | | | |
| Device Description | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is a clear, colorless 0.9% Sodium Chloride solution for preparation of slushed solution to provide hypothermia during the recovery, storage, and transport of donor organs for transplantation. The solution is sterile, non-pyrogenic, isotonic and is contained in a 2L sterile, flexible, non-PVC bag. | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is a clear, colorless 0.9% Sodium Chloride solution for preparation of slushed solution to provide hypothermia during the recovery, storage, and transport of donor organs for transplantation and intraoperatively to provide topical cooling in situ for surgical procedures. The solution is sterile, non-pyrogenic, isotonic and is | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) can be used to provide topical cooling in certain surgical procedures such as open heart and kidney procedures by direct application of slushed solution. There is no change to the |
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K243618: Traditional 510(k), EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618
Page 4 of 7
| Indications for Use | contained in a 2L sterile, flexible, non-PVC bag. | intended purpose of the slushed solution. |
| --- | --- | --- |
| EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is intended for topical cooling of in-situ, abdominal donor organs during intraoperative recovery from the donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient. EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is used to establish, and maintain hypothermia of donor organs during recovery, storage, and transport.
**Organ Recovery**
Prior to organ recovery, EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is delivered to the open peritoneal cavity of the donor to assist in creating hypothermia by topically cooling external surfaces of organs for recovery. During organ recovery, if ice crystals are no longer visible, the temperature of the saline solution will begin to rise and additional EasiSlush slushed solution may be delivered per established transplant team procedures. (Temperature rise may be assessed with temperature probes, being careful that the probe is measuring the solution and is not in contact with the organ).
**Organ Storage/Transport**
For organ storage/transport, EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) may be used to topically cool external surfaces of a sterile, sealed, primary organ bag containing chilled preservation solution and the organ. In this application, | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is intended for topical cooling of in-situ, abdominal donor organs during intraoperative recovery from the donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient. EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is used to establish, and maintain hypothermia of donor organs during recovery, storage, and transport.
It is also indicated for use during open surgical procedures such as cardiovascular, abdominal, and transplant surgeries.
**Organ Recovery**
Prior to organ recovery, EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is delivered to the open peritoneal cavity of the donor to assist in creating hypothermia by topically cooling external surfaces of organs for recovery. During organ recovery, if ice crystals are no longer visible, the temperature of the saline solution will begin to rise and additional slushed solution may be delivered per established transplant team procedures. (Temperature rise may be assessed with temperature probes, being careful that the probe is measuring the solution and is not in contact with the organ). | **General Indications for Use Same: EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is used for topical cooling of in situ and donor organs. Device is used at hypothermic temperatures, to slow biological deterioration in organs.
**Specifically: Use #1 – Organ Recovery – Same**
**Use #2 – Organ Storage/Transport – Same. Use #3 - Surgical Procedure During surgical procedures, EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is delivered to topically cool the exterior surface of organs to reduce metabolic activity so that tissues can tolerate a period of total or relative ischemia.**** |
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K243618: Traditional 510(k), EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618
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| | EasiSlush may be added to a secondary bag or to a tertiary hard container to surround the primary organ bag. Once bagged, the organ can be placed in a bed of non-sterile ice in an insulated transport container, which is then closed. Actual use should follow standard practices of the OPO or hospital for transporting and storing specific types of donor organs using sterile, slush solutions. | used to topically cool external surfaces of a sterile, sealed, primary organ bag containing chilled preservation solution and the organ. In this application, the slushed solution may be added to a secondary bag or to a tertiary hard container to surround the primary organ bag. Once bagged, the organ can be placed in a bed of non-sterile ice in an insulated transport container, which is then closed. Actual use should follow standard practices of the OPO or hospital for transporting and storing specific types of donor organs using sterile, slush solutions.
**Surgical Procedure**
During surgical procedures, EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is delivered to assist in creating hypothermia by topically cooling external surfaces of organs. During the procedure, if ice crystals are no longer visible, the temperature of the saline solution will begin to rise and additional slushed solution may be delivered per established surgical team procedures. | |
| --- | --- | --- | --- |
| **Intended Use** | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is intended for topical cooling of in situ, abdominal donor organs during intraoperative recovery from the donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient. | EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is intended for *in situ* topical cooling during surgical procedures and during intraoperative recovery from an organ transplant donor. It is also intended to maintain organ hypothermia during storage and transport to the transplant recipient. | **Same** |
| **TECNOLOGICAL CHARACTERISTICS** | | | |
| **Storage Temperature** | 2o to 25o C | 2o to 25o C | **No Change** |
| **Pre-Cooling** | Pre-cool solution prior to use (-4 o to -15 o C) | Pre-cool solution prior to use (-4 o to -15 o C) | **No Change** |
| **In-Situ Organ** | External and internal cooling of | External and internal cooling of | **No Change** |
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K243618: Traditional 510(k), EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618
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| Cooling | organ | organ | |
| --- | --- | --- | --- |
| Maintain Cold Organ Temperature During Storage and Transport | Directly cools the organ vasculature during hypothermic storage and transportation (not for continuous perfusion) to the patient. | Directly cools the organ vasculature during hypothermic storage and transportation (not for continuous perfusion) to the patient. | *No Change* |
| Product State | Liquid - Solution | Liquid - Solution | *No Change* |
| Composition | Buffered saline solution. 0.9% Sodium Chloride Irrigation USP | Buffered saline solution. 0.9% Sodium Chloride Irrigation USP | *No Change* |
| Osmolality | 300 mOsmol/kg | 300 mOsmol/kg | *No Change* |
| pH | 4.5–7.0 (per USP monograph for 0.9% Sodium Chloride Irrigation) | 4.5–7.0 (per USP monograph for 0.9% Sodium Chloride Irrigation) | *No Change* |
| Fluid Volume | 1,250ml | 1,250ml | *No Change* |
| Single Use Only | Yes | Yes | *No Change* |
| Primary Container | PVC-Free Bag | PVC-Free Bag | *No Change* |
| Protecting Overwrap Bag | Yes | Yes | *No Change* |
| Shelf Life | 24 Months | 24 Months | *No Change* |
| SAFETY | | | |
| Pyrogenicity | Non-Pyrogenic | Non-Pyrogenic | *No Change* |
| Sterility | Terminally sterilized | Terminally sterilized | *No Change* |
| Sterilization | Terminal gamma irradiation | Terminal gamma irradiation | *No Change* |
| Biocompatibility | Biocompatible in accordance with ISO 10993-1/2/5/10/12. | Biocompatible in accordance with ISO 10993-1/2/5/10/12. | *No Change* |
| Sterile Dispensing/Administration | Sterile bag is cut with sterile instrument and contents dispensed to desired location. | Sterile bag is cut with sterile instrument and contents dispensed to desired location. | *No Change* |
| Bag Connections | None | None | *No Change* |
## 8.0 CONCLUSION
The comparative analysis of the EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) subject device to the predicate EasiSlush® (Sodium Chloride Solution for Sterile Slush
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{11}
K243618: Traditional 510(k), EasiSlush® Sodium Chloride Solution for Sterile Slush Preparation (BTLE-1250)
K243618
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Preparation) (BTLE-1250) device demonstrates that:
- The intended use of the subject device is the same as the predicate.
- The indications for use have been expanded but remain within the scope of the same intended use.
- There are no new technological characteristics.
- The proposed expansion for the indication of use of the subject device does not raise new questions of safety or effectiveness.
Therefore, the subject device meets the requirements for substantial equivalence under 21 CFR 807.100 and the subject EasiSlush® (Sodium Chloride Solution for Sterile Slush Preparation) (BTLE-1250) is as safe and effective for its intended use as the previously cleared 510(k).
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Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.