K Number
K984235
Device Name
INTERSOURCE 125, MODEL 1251L
Date Cleared
1999-06-09

(196 days)

Product Code
Regulation Number
892.5730
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdparty
Intended Use
InterSource125 implants are indicated for interstitial implantation of select localized tumors with low to moderate radiosensitivity. They are used either as primary treatment for tumors such as those of the head, lung, neck, pancreas, prostate, and unresectable tumors, or for residual disease after excision of the primary tumor. InterSource125 implants are indicated for use concurrent with or at the completion of other treatment modalities, such as external beam radiation therapy.
Device Description
InterSource125 is a hermetically sealed radiotherapeutic source indicated for interstitial implantation. The radionuclide used in InterSource125 is Iodine-125 (I-125). InterSource125 is constructed by placing a platinum / iridium radiopaque marker and I-125 on the surface of a medical grade titanium inner tube. The device is sealed by sliding an outer tube, also medical grade titanium, over the inner tube and laser welding both ends. The resulting device has a hollow center with an inner diameter of 0.37 mm with all body tissue contacting surfaces made from medical grade titanium.
More Information

No
The device description and intended use focus on a radioactive implant for brachytherapy, with no mention of AI/ML in the text provided.

Yes
The device description clearly states it is a "radiotherapeutic source" and the intended use specifies it is for "primary treatment" or "for residual disease after excision of the primary tumor" for various localized tumors, indicating its therapeutic purpose.

No

The device is described as a "hermetically sealed radiotherapeutic source" used for treating tumors (e.g., primary treatment, residual disease) through interstitial implantation, not for diagnosing them.

No

The device description clearly states it is a hermetically sealed radiotherapeutic source constructed from physical materials (titanium, platinum/iridium) containing a radionuclide (Iodine-125). This is a physical medical device, not a software-only one.

Based on the provided information, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • Intended Use: The intended use is for the treatment of tumors through interstitial implantation of a radioactive source. This is a therapeutic intervention, not a diagnostic test performed in vitro (outside the body) on biological samples.
  • Device Description: The device is a sealed radioactive source designed to deliver radiation directly to tissue. This is consistent with a therapeutic device, not a diagnostic one.
  • Lack of IVD Characteristics: There is no mention of analyzing biological samples (blood, urine, tissue, etc.), detecting specific analytes, or providing diagnostic information based on in vitro testing.

Therefore, InterSource125 implants are a therapeutic device, not an In Vitro Diagnostic device.

N/A

Intended Use / Indications for Use

InterSource125 implants are indicated for interstitial implantation of select localized tumors with low to moderate radiosensitivity. They are used either as primary treatment for tumors such as those of the head, lung, neck, pancreas, prostate, and unresectable tumors, or for residual disease after excision of the primary tumor. InterSource125 implants are indicated for use concurrent with or at the completion of other treatment modalities, such as external beam radiation therapy.

Product codes

KXK

Device Description

InterSource125 is a hermetically sealed radiotherapeutic source indicated for interstitial implantation. The radionuclide used in InterSource125 is lodine-125 (I-125). InterSource125 is constructed by placing a platinum / iridium radiopaque marker and I-125 on the surface of a medical grade titanium inner tube. The device is sealed by sliding an outer tube, also medical grade titanium, over the inner tube and laser welding both ends. The resulting device has a hollow center with an inner diameter of 0.37 mm with all body tissue contacting surfaces made from medical grade titanium.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

Tumors of the head, neck, lung, pancreas, prostate, and unresectable tumors

Indicated Patient Age Range

Not Found

Intended User / Care Setting

Not Found

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies

The performance of InterSource125 is based on a comparison to the predicate device, Amersham/Medi+Physics Model 6711 Therapeutic Seed Source. The substantial equivalence is based on similar characteristics for indications, physical size, radiopaque marker, biocompatibility, radioisotope, and radiation dose distribution.

A polar plot (Figure 5) compares the computed values for the radiation dose delivered by InterSource125 and the measured values for the radiation dose delivered by the predicate device as a function of angle. Both devices show similar radiation patterns.

Key Metrics

Not Found

Predicate Device(s)

K914281

Reference Device(s)

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information

Not Found

§ 892.5730 Radionuclide brachytherapy source.

(a)
Identification. A radionuclide brachytherapy source is a device that consists of a radionuclide which may be enclosed in a sealed container made of gold, titanium, stainless steel, or platinum and intended for medical purposes to be placed onto a body surface or into a body cavity or tissue as a source of nuclear radiation for therapy.(b)
Classification. Class II (special controls). A prostate seeding kit intended for use with a radionuclide brachytherapy source only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.

0

IBtNovember 24, 1998Page 16 of 19
Title:Premarket Notification -- InterSource125
K984235
8510(K) SUMMARY
8.1General Information
Applicant:IBt, Inc.6000 Live Oak Parkway, Suite 107
Norcross, GA 30093
Tel:(770) 582 0662
Fax:(770) 582 0657
Contact Person IBt, Inc.:Ruth Feicht
Establishment Registration Number:9035105 (IBt, Inc.)
Manufacturing Site:IBt SAZone Industrielle C
7180 Seneffe - Belgium
Tel:(+32) 64 / 520 811
Fax:(+32) 64 / 520 801
Contact Person IBt SA:Vincent Coniglione
Establishment Registration Number:9031509 (IBt SA)
Classification Name:Radionuclide Brachytherapy Source
Common/Usual Name:Iodine-125 Seed
Proprietary Name:InterSource125 (InterSource125 is a Trademark of IBt SA.)
Model Number:1251L
Establishment Registration Number:9035105 (IBt, Inc.)
Classification:Class II, same as the predicate device (see the Substantial
Equivalence section below for predicate device information)
Special Controls:InterSource125 will comply with the regulatory requirements for the
Georgia Department of Natural Resources, Environmental Protection
Division, Radioactive Materials Division for sealed brachytherapy
implant sources.
Substantial Equivalence:InterSource125 is substantially equivalent to the
Amersham/Medi+Physics Model 6711 Therapeutic Seed Source
(Premarket Notification #K914281), a Class II post-amendment device
granted clearance to market on 22 Nov 1991.
8.2The contents of this premarket notification summary will demonstrate the
substantial equivalence of the subject device, InterSource125, to the predicate
device, the Amersham/Medi+Physics Model 6711 Therapeutic Seed Source.
The substantial equivalence will be based on the following important features of
the device:
8.2.1Indications
8.2.2Physical Size
8.2.3Radiopaque Marker
8.2.4Biocompatibility
8.2.5Radioisotope

1

| IBt

November 24, 1998Page 17 of 19
Title: Premarket Notification - InterSource125
8.3 InterSource125 Description
InterSource125 is a hermetically sealed radiotherapeutic source indicated
for interstitial implantation. The radionuclide used in InterSource125 is
lodine-125 (I-125). InterSource125 is constructed by placing a platinum /
iridium radiopaque marker and I-125 on the surface of a medical grade
titanium inner tube. The device is sealed by sliding an outer tube, also
medical grade titanium, over the inner tube and laser welding both ends.
The resulting device has a hollow center with an inner diameter of 0.37
mm with all body tissue contacting surfaces made from medical grade
titanium.
8.4 Table 6 compares the indications statement drafted for InterSource125 with the
predicate device's indications statement.
Table 6: Indications Statement Comparison Summary
InterSource125Predicate Device
InterSource125 implants are indicated for
interstitial implantation of select localized
tumors with low to moderate radiosensitivity.
They are used either as primary treatmentI-125 Seeds are indicated for interstitial treatment of
tumors which have the following characteristics:
unresectable, localized, slow growth rate, and low to
moderate radiosensitivity. I-125 Seeds may be used to
for tumors such as those of the head, lungtreat superficial, intraabdominal or intrathoracic

InterSource125 is substantially equivalent to the predicate device with respect to its indications. 8.6 Table 7 compares the physical size, radiopaque marker, materials of construction, and the radioisotope for the subject device and the predicate

Based on the intent of the indications statement for the subject device,

neck, pancreas, prostate, and unresectable

tumors, or for residual disease after excision

implants are indicated for use concurrent

with or at the completion of other treatment

modalities, such as external beam radiation

of the primary tumor. InterSource125

therapy.

device.

8.5

Feature DescriptionInterSource125Predicate Device
Outer TubeMedical grade titaniumTitanium
Length4.5 mm4.5 mm
Outside Diameter0.8 mm0.8 mm
Radiopaque MarkerPlatinum / IridiumSilver
Isotope CarrierMedical grade titaniumSilver
Inner TubeMedical grade titaniumNot Applicable
Seal MethodLaser WeldPlasma Arc Weld
RadioisotopeIodine-125Iodine-125

tumors. Tumors of the head, neck, lung, pancreas,

125 Seeds are indicated to treat residual tumors

therapy. In addition, recurrent tumors may be

implanted with I-125 Seeds.

and prostate (early stages) are commonly treated. I-

following completion of a course of external radiation

2

IBt

November 24, 1998

Premarket Notification - InterSource125 Title:

Half-life59.4 days59.4 days
Principal Energy27.2 keV, 27.5 keV27.2 keV, 27.5 keV
Levels31.0 keV, 35.5 keV31.0 keV, 35.5 keV
Distribution of IsotopeDeposited onto the surface
of the isotope carrierDeposited onto the surface
of the isotope carrier
Apparent Activity
Levels0.1 to 5.0 mCi0.18 to 5.99 mCi
Residual Activity