Patented SNARECOIL™ 13 gauge × 3 inch bone marrow biopsy needle. The thinner cannula combined with a 3-inch working length extends the reach of the smallest-bore SNARECOIL™ configurations.
Caution: Federal (USA) law restricts this device to sale by or on the order of a physician.
The Ranfac RBN-133 is a 13 gauge × 3 inch single-use bone marrow biopsy needle in the patented SNARECOIL™ family. The 13 G cannula provides a smaller bore than the standard 11G configurations while the 3-inch working length offers more reach than the 2-inch RBN-132.
RBN-133 is the 13 G × 3 inch SNARECOIL™ configuration, paired with the shorter RBN-132 (13 G × 2 inch) for thin-cortex and lower-volume biopsy protocols. Standard diagnostic biopsy typically uses 11 G configurations (RBN-114, RBN-116).
Per 510(k) K983187: For procuring bone marrow core biopsies from patients with hematologic abnormalities. Per IFU 29024-01P: The Ranfac Bone Marrow Biopsy Needle is indicated for the surgical harvesting of bone marrow.
13 gauge × 3 inch is selected when a smaller-bore biopsy is appropriate (e.g., thin-cortex, low-BMI, or specific institutional-protocol) but the 2-inch RBN-132 is too short to reach the marrow cavity reliably. Per the 29024-01P Rev J Instructions for Use, the device is contraindicated for sternal procedures.
Lymphoma, leukemia, MDS, multiple myeloma workups where a smaller-bore needle is preferred.
13 G × 3 inch extends reach beyond the 2-inch RBN-132 while maintaining the smaller-bore profile.
Captive specimen retention supports recovery of long, non-fragmented cores.
Long, intact cores reduce specimen-handling artifacts during fixation, sectioning, and immunohistochemistry — supporting accurate, reproducible reads.
Construction, regulatory, and packaging details. Gauge, length, cannula and stylet are listed in the hero above. For complete indications, contraindications, and warnings, download the Instructions for Use.
| Construction | Stainless steel cannula and stylet · medical-grade polymer ergonomic handle with capture lever |
|---|---|
| Connection | Proximal luer cap (optional luer-lock for aspirate syringe per IFU) |
| Sterilization | Ethylene oxide · single-use · latex-free |
| Packaging | Individually pouched |
| FDA Clearance | 510(k) K983187 (10 Dec 1998) · Class II · Product Code KNW |
| Prescription | Rx only (21 CFR 801 Subpart D) |
Summary only. The complete 25-step bilingual Instructions for Use (29024-01P Rev J), including contraindications, warnings, and specimen-retrieval technique, accompanies every device and is downloadable below.
Both are 13 gauge SNARECOIL™ biopsy needles. RBN-133 has a 3-inch working length; RBN-132 has a 2-inch working length. Choose RBN-133 when the planned cortical depth exceeds 2 inches but a smaller-bore needle is still appropriate.
SNARECOIL™ is Ranfac's patented captive specimen-capture mechanism. A lever on the ergonomic handle engages the cannula tip to retain the marrow core during withdrawal, helping recover long, non-fragmented specimens.
Yes. Cleared under 510(k) K983187, Class II, Product Code KNW. Prescription use only.
No. The 29024-01P Rev J Instructions for Use explicitly contraindicates sternal procedures.
Yes. EO-sterilized, single-patient-use, not made with natural rubber latex.
Yes. Gauge, length, handle ergonomics, and packaging can be customized on the Ranfac single-source platform. Contact us.
Other configurations in the Ranfac Hematology family.
Single-use 13 gauge × 2 inch SNARECOIL™ bone marrow biopsy needle — smaller-bore configuration for thin-cortex anatomy
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Single-use 11 gauge × 4 inch bone marrow biopsy needle with patented SNARECOIL™ specimen capture mechanism
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Single-use 8 gauge × 4 inch SNARECOIL™ bone marrow biopsy needle — large-bore configuration for high-volume core specimens
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Single-use 8 gauge × 6 inch SNARECOIL™ bone marrow biopsy needle — large-bore configuration with extended reach
View →Have a clinical question, need samples for evaluation, or ready to purchase? Our product team typically responds within one business day.
Building a different device on the same platform? Ranfac runs custom OEM, CDMO, and CMO programs from concept through commercial. Talk to us about a custom configuration →