XC N-Series RJ-MP Multifunctional Handpiece

General orthopaedic trauma theatres benefit from the N Series RJ-MP Multifunctional Handpiece by replacing the collection of separate bone drills, oscillating saws, wire drivers, and acetabular reamers with a single quick-coupling handpiece platform that covers all of these functions through interchangeable attachments. This consolidation reduces the number of powered instruments that must be purchased, sterilised, and stored in the theatre instrument inventory, delivering a direct procurement cost benefit for hospital instrument managers and procurement officers. The RJ-MP is available through Medigear.uk with full CE and ISO 13485 documentation to support institutional approval.

In joint arthroplasty settings, the RJ-MP handles the entire procedural sequence, from acetabular reaming and oscillating saw cuts to final fixation drilling and K-wire placement, using the same handpiece body throughout. An axial run-out of 0.05 mm or less ensures each attachment maintains the precision required for accurate implant positioning, and the variable trigger provides the surgeon with real-time speed control as bone density changes. Medigear.uk can supply technical documentation confirming the run-out and speed specifications for institutional clinical engineering review.

Neurosurgical teams can use the RJ-MP's craniotomy mill and auto-stopping cranial drill attachments through the same coupling interface, and cardiothoracic teams can use the sternum saw attachment for cardiac access via median sternotomy. The 360° rotating sternum saw head and integrated blade guard are standard features of the sternum saw attachment that protect mediastinal structures during sternal division. The complete system from Medigear.uk supports multi-speciality theatre programmes from a single handpiece.

B2B distributors can position the N Series RJ-MP Multifunctional Handpiece as a single, versatile surgical power tool for orthopaedic, neurosurgical, and cardiothoracic theatres. Volume pricing, OEM labelling, and full CE and ISO documentation packages are available through the Medigear.uk procurement team.

Full Attachment Suite in One Quick-Coupling System — Seven Functions from One Handpiece

The N Series RJ-MP Multifunctional Handpiece accepts seven distinct attachment types — oscillating saw, acetabulum reaming drill, quick chuck for standard drilling, wire and pin chuck, sternum saw, craniotomy mill, and auto-stopping cranial drill — all through the same quick-coupling interface without tools. This attachment breadth means a single RJ-MP handpiece can replace the entire powered instrument inventory of an orthopaedic trauma, joint arthroplasty, neurosurgery, or cardiothoracic theatre and adapt to any surgical preference or technique change within those disciplines. For hospital procurement teams building instrument sets or new theatre programmes, the RJ-MP is a single-line purchase that covers multiple functions.

≤ 0.05 mm Axial Run-Out — Precision Maintained Across All Attachments

The N Series RJ-MP Multifunctional Handpiece maintains axial concentricity run-out at or below 0.05 mm, ensuring that the drive axis remains precisely centred whether the handpiece is driving a drill bit, reaming head, saw blade, or wire chuck. This precision is the standard expected for accurate implant hole placement in joint reconstruction, guide pin positioning in cannulated screw technique, and controlled sternal division in cardiac surgery. The run-out specification is confirmed in the N Series technical documentation available through Medigear.uk.

Single Trigger Modular Design — Autoclavable Handpiece, Removed Battery Protocol

The single trigger modular handpiece design of the N Series RJ-MP allows the handpiece body itself to be sterilised by autoclave at up to 135°C once the NiMH battery is removed, integrating directly into standard Class B CSSD reprocessing cycles used in hospital sterile services. This is a significant infection control advantage over handpiece designs that require cold-process sterilisation or cannot be fully autoclavable, and it means the RJ-MP can be processed through the same instrument workflow as other reusable surgical instruments without dedicated handling. The sterilising channel included in the standard set supports full internal sterilisation of the handpiece.

Auto-Stopping Cranial Drill Attachment — Patient Safety in Neurosurgery

The auto-stopping cranial drill attachment, included in the N Series RJ-MP standard set, automatically stops when the drilling bit penetrates the inner cortical table of the skull, preventing inadvertent plunge into the dura and brain tissue. This safety mechanism directly addresses the principal risk of craniotomy drilling and is a standard feature of the RJ-MP attachment suite, not an optional add-on. For neurosurgical programmes assessing the RJ-MP for craniotomy applications, please consider the attachment feature a primary evaluation point. The Medigear.uk team can provide attachment-specific documentation on request.

CE Certified and ISO 13485-Aligned — NHS-Ready Compliance Documentation.

The N Series RJ-MP Multifunctional Handpiece is CE-certified and manufactured in accordance with ISO 13485, meeting the compliance requirements of NHS trust medical device approval panels, hospital procurement committees, and government framework buying assessors. Medigear.uk holds the Declaration of Conformity and technical documentation ready to issue with the system, eliminating delays caused by missing compliance paperwork. This readiness is particularly valuable for multi-speciality procurement submissions, in which several powered instruments from different surgical disciplines must be approved simultaneously.

Sternum Saw with 360° Rotating Head and Blade Guard — Cardiac Surgery Ready

The sternum saw attachment for the N Series RJ-MP features a 360° rotating head that allows full blade orientation without repositioning the handpiece grip, and an integrated blade guard that protects mediastinal structures throughout the sternal division. These design features are standard on the NM-100 system's sternum saw attachment and directly address the two principal technical requirements for safe median sternotomy — directional flexibility and protection of the posterior sternal surface. For cardiothoracic theatre procurement programmes assessing the RJ-MP as a sternum saw platform, Medigear.uk can supply the sternum saw attachment specifications separately for dedicated review.

Variable Speed Control 0 to 1100 rpm — Proportional Trigger Across All Attachments

The variable trigger of the N Series RJ-MP delivers stepless, proportional speed response from zero to 1100 rpm across all attached instruments, providing the surgeon with the same intuitive trigger-speed relationship regardless of the attachment. This consistency means that surgical teams trained on one attachment type adapt immediately to other attachment functions without relearning trigger sensitivity, thereby reducing operative workflow disruption and supporting the multi-speciality platform concept. The 1100 rpm ceiling is the accepted standard for orthopaedic bone drilling and is also appropriate for the controlled, low-speed demands of the sternum saw attachment.

14.4 V NiMH Battery — Environmentally Responsible, Memory-Free Operation

The 14.4 V NiMH battery powering the N Series RJ-MP is free from the memory effect that degrades the effective capacity of NiCd batteries when they are repeatedly recharged before full discharge, and it avoids the thermal-runaway risk associated with lithium-ion batteries in the autoclave environment. The NiMH chemistry is also more environmentally responsible than cadmium-based alternatives. Replacement batteries and chargers are available as spare parts through Medigear.uk, and the two-year handpiece warranty includes six months of free accessory support, which typically covers the battery.

OEM and Volume Supply — Platform Solution for Distributor Catalogues

The N Series RJ-MP Multifunctional Handpiece is available through Medigear. UK for OEM configuration, volume pricing, and custom attachment set composition, making it a viable flagship product for B2B distributors building surgical power tool catalogues that span the orthopaedic, neurosurgical, and cardiothoracic theatre markets from a single handpiece platform. White-label branding, custom packaging, and documentation in different regulatory formats may be available depending on order volume. The Medigear.uk business team provides the CE and ISO documentation packages needed to support distributor regulatory submissions in each operating market.

Maximum Drilling Speed: approximately 1100 rpm — Orthopaedic Standard for Bone Drilling

The N Series RJ-MP handpiece delivers approximately 1100 rpm in standard drill configuration, which is the accepted standard for bone drilling in orthopaedic trauma and joint surgery. This speed provides sufficient rotational force for efficient penetration of cortical and cancellous bone while remaining within the thermal safety threshold for the standard technique. If you'd like, we can customise the speed on request through the Medigear.uk procurement team.

Output Power: ≥ 20 W — Sustained Performance Across Attachment Types.

The handpiece output power of 20 W or above ensures sufficient torque and rotational energy to drive all attachment types through their respective operating demands, from standard bone drilling at 1100 rpm to sternum saw cutting at 4000 rpm to craniotomy mill operation at high speed. This minimum output specification is confirmed in the N Series RJ-MP technical data and is consistent with the performance requirement for a multifunctional handpiece used across multiple surgical disciplines.

Working Voltage: 14.4 V — Standard Platform Voltage for Ruijin N Series

The 14.4 V working voltage of the N Series RJ-MP is the established platform voltage across the Ruijin N Series medical power tool range, ensuring battery and charger compatibility across the instrument family. The 14.4 V platform delivers the drive energy required for sustained high-torque operation in the acetabulum reaming drill and sternum saw attachment modes, which are the most power-intensive applications in the standard attachment set.

Charger: AC 220 V, 50 Hz Input — 14.4 V at 900 mA Output, 30 VA Input Power

The included charger accepts 220 V AC at 50 Hz and delivers 14.4 V at 900 mA to the NiMH battery, with an input power of 30 VA. The charger restores full battery capacity in approximately three hours. For institutions requiring a different input-voltage configuration, confirm compatibility with the Medigear.uk procurement team before placing an order.

Axial Run-Out: ≤ 0.05 mm — Maintained Across All Quick-Coupling Attachments

The ≤ 0.05 mm axial concentricity run-out specification of the N Series RJ-MP ensures precise rotational accuracy across all attachment types connected through the quick-coupling interface. This precision enables accurate implant hole placement, concentric socket preparation, and controlled sternal division from a single handpiece body. The specification is confirmed in the N Series technical documentation available through Medigear.uk.

Handpiece Temperature Rise: ≤ 25°C — Comfortable Long-Duration Operation

The handpiece surface temperature rise during operation is specified at no more than 25°C above ambient, ensuring the instrument remains comfortable to hold throughout extended surgical lists involving repeated attachment changes and continuous drilling, reaming, or sawing. This specification is confirmed in the N Series RJ-MP technical data sheet.

Quick-Coupling Interface: Tool-Free, Multi-Brand Compatible

The quick-coupling attachment interface of the N Series RJ-MP connects and disconnects all seven standard attachments without tools through a fast-lock mechanism, enabling intraoperative attachment changes in seconds. The interface is designed to support compatibility with multiple attachment brands through a standard coupling format. Confirm specific brand compatibility with the Medigear.uk team before placing an order.

Attachment 1 — Oscillating Saw: High-Frequency Bone Cutting for Arthroplasty

The oscillating saw attachment for the N Series RJ-MP provides high-frequency oscillating motion for femoral and tibial resection cuts in total knee arthroplasty, femoral neck cuts in hip replacement, and osteotomy cuts in trauma reconstruction. The quick-coupling connection allows intraoperative blade changes without tools. Replacement saw blades are available through Medigear.uk.

Attachment 2 — Acetabulum Reaming Drill: Low-Speed, High-Torque Socket Preparation

The acetabulum reaming drill attachment connects the RJ-MP to a standard acetabulum reaming grinder for progressive hip socket preparation in total hip arthroplasty. The N Series handpiece delivers the low-speed, high-torque performance required for controlled socket enlargement through dense cancellous bone at the diameter run-out precision specified for the handpiece.

Attachment 3 — Sternum Saw: 360° Rotating Head with Integrated Blade Guard

The sternum saw attachment for the N Series RJ-MP features a 360° rotating head and an integrated blade guard that protects soft tissue anterior to the pericardium during median sternotomy. The attachment operates at approximately 4000 rpm and is the primary instrument for cardiac surgical access, thoracic procedures, and mediastinal tumour excision via sternal split.

Attachment 4 — Auto-Stopping Cranial Drill: Safety-Mechanism Neurosurgical Drilling

The auto-stopping cranial drill attachment automatically disengages when the bit penetrates the inner cortical table, preventing inadvertent dural contact. This safety mechanism is standard in neurosurgical bone access drilling and is included as a standard attachment in the N Series RJ-MP complete set.

Attachment 5 — Wire and Pin Chuck: K-Wire and Guide Pin Driver

The wire and pin chuck attachment accepts K-wires and guide pins for intramedullary nail preparation, provisional fracture fixation, and external fixator pin placement. The quick-coupling mechanism allows rapid exchange with the quick chuck or cannulated drill attachment within the same procedure.

Set Contents: Handpiece, Battery, Charger, Sterilising Channel, Seven Attachments, Aluminium Case

The complete N Series RJ-MP Multifunctional Handpiece set is supplied in an aluminium alloy case containing all standard components ready for immediate clinical deployment. Individual replacement items, including batteries, chargers, sterilising channels, and attachments, are available through Medigear.uk for ongoing instrument maintenance.

The N Series RJ-MP Multifunctional Handpiece is a CE-certified, autoclavable surgical power tool with a quick-coupling attachment interface that supports drilling, sawing, reaming, K-wire driving, and craniotomy across joint arthroplasty, trauma, neurosurgery, and cardiothoracic surgery settings. Its 14.4 V battery platform, ≤ 0.05 mm run-out precision, and comprehensive attachment suite make it a practical and versatile choice for hospital theatre instrument consolidation, B2B distributor catalogues, and multi-speciality surgical programme procurement. ISO 13485-aligned compliance documentation and full CE conformity paperwork are available through the Medigear.uk procurement team to support institutional approval at any level. Contact Medigear.uk for specifications, procurement assistance, or expert consultation.