Patented SNARECOIL™ 11 gauge × 4 inch bone marrow biopsy needle. The captive-mechanism handle and probe-and-probe-guide system are designed to recover long, non-fragmented marrow cores from the posterior iliac crest.
Caution: Federal (USA) law restricts this device to sale by or on the order of a physician.
The Ranfac RBN-114 is an 11 gauge × 4 inch single-use bone marrow biopsy needle in the patented SNARECOIL™ family. The ergonomic handle includes a captive-mechanism lever (gray OPEN/CLOSED indicator) that engages the specimen at the distal cannula tip, allowing the operator to recover a long, intact marrow core in a single advancement. The needle ships sterile by ethylene oxide and is individually packaged for single-patient use.
RBN-114 sits at the standard diagnostic position in the Ranfac SNARECOIL™ portfolio — 11 G × 4 inch for posterior iliac biopsy. The 6 inch RBN-116 covers deeper-access protocols at the same gauge; the larger-bore 8 G family (RBN-84, RBN-86) is selected when higher specimen volume is required.
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.
11 gauge × 4 inch is the most common configuration for diagnostic bone marrow biopsy via the posterior superior iliac spine. The SNARECOIL™ captive mechanism is intended to reduce specimen fragmentation that can complicate pathological evaluation. Per the 29024-01P Rev J Instructions for Use, the device is contraindicated for sternal procedures.
Lymphoma, leukemia, MDS, multiple myeloma workups requiring intact core specimens for histologic evaluation.
Metastatic staging, treatment response monitoring, and disease surveillance protocols.
Long, non-fragmented cores reduce specimen-handling artifacts during fixation, sectioning, and immunohistochemistry.
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.
11 gauge × 4 inch (~10.2 cm). This is the most common posterior iliac crest configuration.
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 with this device. Use only on biopsy sites approved by the supervising physician.
Yes. EO-sterilized, single-patient-use, not made with natural rubber latex. Disposal in a sharps biohazard container per facility policy.
The captive lever at the distal cannula tip engages and retains the marrow core during withdrawal, allowing the operator to recover a long, intact specimen in a single advancement. Reducing fragmentation supports cleaner fixation and sectioning at the pathology bench — particularly important for immunohistochemistry and flow cytometry workflows.
Other configurations in the Ranfac Hematology family.
Single-use 11 gauge × 6 inch SNARECOIL™ bone marrow biopsy needle — specialty variant
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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 13 gauge × 2 inch SNARECOIL™ bone marrow biopsy needle — smaller-bore configuration for thin-cortex anatomy
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 →
