Bojin System 4000 Surgical Power Tool Series — Stainless-Steel 155°C Autoclavable Orthopedic Set

System 4000 Surgical Power Tool Series — High-Strength Stainless-Steel Cordless Line

The Bojin System 4000 is the heavy-duty flagship of the Bojin orthopedic power tool family. The main components are machined from high-strength stainless steel, the Germany-imported motor delivers strong, stable output, and the entire handpiece withstands 155°C autoclave cycles. With twelve specialized handpieces covering every orthopedic discipline — joint, trauma, cranial, and thoracic — the System 4000 is the go-to choice for tertiary hospitals, university medical centers, and high-volume surgery centers.

Key Advantages of the System 4000 Series

Ergonomic design with high proper alignment and low noise for long surgical procedures.
New Germany-imported motor with strong, stable torque output for dense cortical bone.
High-strength stainless-steel main components for maximum durability and infection control.
155°C autoclavable handpiece exceeds standard steam-sterilization requirements.
Comprehensive 12-model lineup covers the full orthopedic, cranial, and thoracic caseload.

Models in the System 4000 Series — Specific Advantages and Differences

BJ4101 Sagittal Saw — For Joint Operation

Advantage: Heavy-duty sagittal saw for knee, hip, and shoulder arthroplasty with high oscillation stability.
Difference vs BJ1101 (System 1000) and BJ1401 (System 1400): Stainless-steel housing, 155°C autoclave, and higher sustained torque for revision arthroplasty.

BJ4102 Bone Drill — For Trauma Operation

Advantage: Single-function high-torque drill for cortical bone preparation in trauma plating.
Difference vs BJ4102A / BJ4102SA0: Single-mode chuck; BJ4102A adds dual-function (pin driving), BJ4102SA0 adds AO quick-coupling.

BJ4102A Dual Function Bone Drill — For Trauma Operation

Advantage: Switches between drilling and pin driving without changing handpiece, saving OR time during long-bone fixation.
Difference vs BJ4102: Adds a pin-driving mode for intramedullary K-wire fixation.

BJ4102SA0 AO Drill — For Trauma Operation

Advantage: AO/ASIF-compatible Jacobs chuck for trauma drill bits, taps, and screwdriver shafts.
Difference vs BJ4102A: AO quick-coupling chuck instead of keyless cannulated chuck — ideal for AO locking plate systems.

BJ4103 Cannulate Drill — For Trauma Operation

Advantage: Cannulated chuck for guide-wire-driven drilling in minimally invasive fracture fixation.
Difference vs BJ4103B / BJ4103D: Single-function drill; BJ4103B / BJ4103D add dual-function forward / reverse rotation.

BJ4103B / BJ4103D Dual Function Cannulate Drill — For Trauma Operation

Advantage: Dual forward/reverse (D) or oscillating (B) mode for reaming, tapping, and difficult fracture patterns.
Difference vs BJ4103: Adds multi-mode rotation for advanced trauma cases.

BJ4104 Cranial Drill — For Cranial Operation

Advantage: High-torque, low-speed drilling for burr holes and craniotomies, with a heat-reducing clutch for safe cortical perforation.
Difference vs BJ4105: Drill bit (axial) vs bur (side-cutting) action.

BJ4105 Cranial Bur — For Cranial Operation

Advantage: Diamond and carbide bur attachments for cranioplasty, skull-base tumor resection, and contouring.
Difference vs BJ4104: Bur vs drill action for fine bone shaping.

BJ4106 Sternum Saw — For Joint Operation

Advantage: Reciprocating sternum saw with safety guard for median sternotomy in cardiac surgery.
Difference vs BJ4109: Sternum-specific blade geometry and guard vs general-purpose reciprocating saw.

BJ4107B / BJ4107D Dual Function Acetabulum Reaming Drill — For Joint Operation

Advantage: Powerful dual-mode reaming for acetabular cup preparation in primary and revision total hip arthroplasty.
Difference vs BJ4101: Reaming drill vs sagittal saw — BJ4107 is dedicated to hip socket preparation.

BJ4108 Overhaul Saw — For Second Time Thoracic Operation

Advantage: Reinforced blade and stronger motor for redo thoracotomy through calcified sternal bone.
Difference vs BJ4106: Built for revision cardiac surgery; higher torque and longer stroke than BJ4106.

BJ4109 Reciprocating Saw — For Joint Operation

Advantage: Linear back-and-forth stroke for rapid bone resection in long-bone and joint arthroplasty.
Difference vs BJ4101: Reciprocating (linear) vs sagittal (oscillating) stroke — choose BJ4109 for long cuts and BJ4101 for precise shaping.

Standard System 4000 Accessories

BJ4001 Rechargeable Battery — high-capacity battery for the 4000 / 4200 platform.
BJ1002 Battery Charger — shared charger for the System 4000.
BJ4003 Battery Lid — sealed cover for aseptic battery transfer.
BJ4004 Aseptic Transfer Kit — sterile barrier for handpiece-to-battery docking.
BJ1005 Chuck Key — universal chuck key (shared with all Bojin Systems).

Technical Specifications

Motor: Germany-imported DC motor, variable speed, high torque
Housing material: High-strength stainless steel
Power source: Detachable battery (BJ4001)
Sterilization: 155°C autoclavable (exceeds standard 135°C)
Compliance: CE-marked, ISO 13485 certified

Typical Applications

High-volume trauma surgery, primary and revision joint replacement, cranial neurosurgery, thoracic surgery (including redo sternotomy), sports medicine orthopedics, and any procedure requiring a robust, autoclavable stainless-steel power tool platform.

Frequently Asked Questions

Q: Can the System 4000 share batteries with the System 1000?
A: No. The System 4000 uses the BJ4001 high-capacity battery, which is shared with the System 4200 platform. System 1000 / 2000 / 8000 use the BJ1001 battery.

Q: Why is 155°C autoclavability important?
A: 155°C autoclavability exceeds the WHO-recommended sterilization standard for prion deactivation (134°C / 18 min). The System 4000 is preferred in neurosurgery and revision surgery where maximum sterility assurance is required.

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