The Precision Medical Sternum Saw for Repeat Sternotomy is a specialized cardiac surgical tool engineered to address the unique challenges of re-entering the chest cavity in patients with prior sternotomies. Unlike standard sternum saws, it navigates dense scar tissue and bone calluses with 0.8–2mm adjustable amplitude , delivering 12,000 oscillations/min while minimizing risk to underlying structures like the heart and great vessels.
NS-4041
ruijin
Certified by CE, FDA, and ISO 13485 , this system prioritizes sterility and safety with a sterile, disposable battery pack and autoclavable components (134–138°C). Its ergonomic grip (weight: 0.8 kg ) reduces hand fatigue during 2+ hour procedures, a critical feature in complex cardiac surgeries such as redo coronary artery bypass grafting (CABG) or valve replacements.
The oscillating blade (6–12mm width) adjusts amplitude from 0.8mm (for scar tissue) to 2mm (for dense bone), ensuring controlled penetration without sudden breakthrough. A proprietary tissue detection sensor analyzes resistance 500 times/second, pausing operation within 0.03 seconds if soft tissue contact is detected—reducing accidental injury risk by 70% compared to traditional saws.
The single-use sterile battery pack eliminates cross-contamination risks, while the autoclavable blade and handle meet 134–138°C sterilization standards . A blade guard system extends automatically during soft tissue dissection and retracts only when bone contact is confirmed, protecting adhesions between the sternum and heart.
The tool-free blade release accommodates Stryker and Medtronic-compatible blades , including specialized scar tissue blades (serrated edge) for redo procedures and standard blades (smooth edge) for primary sternotomies. A depth stop collar limits penetration to 15mm —critical for avoiding injury to the ascending aorta or right ventricle.
Weighing 0.8 kg with a textured rubber grip , the saw reduces wrist strain during prolonged surgeries. Its low-noise motor (≤65 dB) minimizes distractions in the OR, while the balanced weight distribution enhances control during midline sternal splitting.
The 14.4V lithium-ion battery provides 75+ minutes of runtime —enough for 2–3 complex cardiac procedures. A quick-release battery latch enables swaps in <30 seconds , ensuring uninterrupted operation during extended surgeries.
Repeat Sternotomy: Safely re-enters chests with prior CABG or valve surgery, navigating scar tissue to reduce bleeding and infection risks by 40%.
CABG and Valve Surgery: Enables precise sternal splitting for graft placement or valve replacement, with adjustable amplitude matching bone density.
Pediatric Cardiac Surgery: The lightweight design and adjustable speed (0–12,000 oscillations/min) suit delicate pediatric sternums, minimizing trauma in congenital heart defect repairs.
Emergency Sternotomy: Valuable in cardiac arrest scenarios for rapid access, with cordless design enhancing mobility in trauma resuscitation.
Q: Can the saw be used for primary sternotomies?
A: Yes, it includes a 10mm standard blade for primary procedures, with optional scar tissue blades available for redo surgeries to handle fibrous tissue.
Q: How is the blade sharpness maintained?
A: The tungsten carbide coating resists wear, ensuring sharpness for 30+ procedures —a 50% improvement over uncoated blades.
Q: Is the battery compatible with third-party chargers?
A: Yes, it supports 14.4V lithium-ion chargers from Medtronic, Boston Scientific, and other leading brands, ensuring compatibility with existing OR equipment.
Q: What is the warranty period?
A: The system includes a 2-year warranty for mechanical components and a 1-year warranty for batteries, with extended coverage available for high-volume facilities.
| Order code | Power voltage | Speed |
| NS-4041 | 110V | 0-13000 cpm |
| NS-4042 | 220V | 0-13000 cpm |
Certified by CE, FDA, and ISO 13485 , this system prioritizes sterility and safety with a sterile, disposable battery pack and autoclavable components (134–138°C). Its ergonomic grip (weight: 0.8 kg ) reduces hand fatigue during 2+ hour procedures, a critical feature in complex cardiac surgeries such as redo coronary artery bypass grafting (CABG) or valve replacements.
The oscillating blade (6–12mm width) adjusts amplitude from 0.8mm (for scar tissue) to 2mm (for dense bone), ensuring controlled penetration without sudden breakthrough. A proprietary tissue detection sensor analyzes resistance 500 times/second, pausing operation within 0.03 seconds if soft tissue contact is detected—reducing accidental injury risk by 70% compared to traditional saws.
The single-use sterile battery pack eliminates cross-contamination risks, while the autoclavable blade and handle meet 134–138°C sterilization standards . A blade guard system extends automatically during soft tissue dissection and retracts only when bone contact is confirmed, protecting adhesions between the sternum and heart.
The tool-free blade release accommodates Stryker and Medtronic-compatible blades , including specialized scar tissue blades (serrated edge) for redo procedures and standard blades (smooth edge) for primary sternotomies. A depth stop collar limits penetration to 15mm —critical for avoiding injury to the ascending aorta or right ventricle.
Weighing 0.8 kg with a textured rubber grip , the saw reduces wrist strain during prolonged surgeries. Its low-noise motor (≤65 dB) minimizes distractions in the OR, while the balanced weight distribution enhances control during midline sternal splitting.
The 14.4V lithium-ion battery provides 75+ minutes of runtime —enough for 2–3 complex cardiac procedures. A quick-release battery latch enables swaps in <30 seconds , ensuring uninterrupted operation during extended surgeries.
Repeat Sternotomy: Safely re-enters chests with prior CABG or valve surgery, navigating scar tissue to reduce bleeding and infection risks by 40%.
CABG and Valve Surgery: Enables precise sternal splitting for graft placement or valve replacement, with adjustable amplitude matching bone density.
Pediatric Cardiac Surgery: The lightweight design and adjustable speed (0–12,000 oscillations/min) suit delicate pediatric sternums, minimizing trauma in congenital heart defect repairs.
Emergency Sternotomy: Valuable in cardiac arrest scenarios for rapid access, with cordless design enhancing mobility in trauma resuscitation.
Q: Can the saw be used for primary sternotomies?
A: Yes, it includes a 10mm standard blade for primary procedures, with optional scar tissue blades available for redo surgeries to handle fibrous tissue.
Q: How is the blade sharpness maintained?
A: The tungsten carbide coating resists wear, ensuring sharpness for 30+ procedures —a 50% improvement over uncoated blades.
Q: Is the battery compatible with third-party chargers?
A: Yes, it supports 14.4V lithium-ion chargers from Medtronic, Boston Scientific, and other leading brands, ensuring compatibility with existing OR equipment.
Q: What is the warranty period?
A: The system includes a 2-year warranty for mechanical components and a 1-year warranty for batteries, with extended coverage available for high-volume facilities.
| Order code | Power voltage | Speed |
| NS-4041 | 110V | 0-13000 cpm |
| NS-4042 | 220V | 0-13000 cpm |
