Contact for more Information
Technology Alerts minus

Sign up to receive TIDO’s monthly newsletter highlighting new Children’s Hospital technologies and research and development partnership opportunities.

sign me up
send to a friend

CMCC 2607

Extremely Short Magnet Needle

Inventors: Kaifeng Liu

Categories: Medical Device

SubCategories: Surgery/Wound Healing


Invention Description:

Traditional suture needles are gripped by both a needle holder and tweezers simultaneously. The needles need to be long enough to provide sufficient space to allow such handling. The thread is attached to the back of the needle and is pulled through the tissue following the direction of the suturing motion.

While this traditional setup works well in many situations, the length and handling of the needles and sutures present challenges in confined spaces. Direct manipulation of both the needle holder and tweezers are necessary to prevent the accidental puncturing of neighboring tissues. Researchers at Boston Children’s Hospital have invented a novel, enabling stitching apparatus that utilizes a very short, hollow, magnetic needle. Depending on the thickness of the tissue to be pierced, the length of the needle can be <5mm. It is designed to reduce the size of surgical field, reduce tissue injury, and improve surgical outcomes.

The stitching mechanism is simple and rapid. First, the needle component is pierced through the tissue. Next, the needle magnetically engages a suture element (which also has a magnetic end) into the hollow space within the beveled section. Finally, the needle is pulled in the opposite direction it was inserted, pulling the magnetically engaged suture through the tissue.


• Suturing in all medically relevant procedures, ranging from general surgery to close wounds to complicated cardiac, brain surgery, microsurgery, especially in cases where space is confined or within very deep tissues.

Competitive Advantages:

• Short needle length and unique magnetic tips allow for delivering sutures in confined spaces, very deep tissues and other traditionally inaccessible places.
• Short needle length reduces risk of puncturing nearby tissue and allows suturing with tight angles.
• Simple stitching mechanism allows for rapid suturing.
• Variable beveled length allows for needle length to be optimized for tissue thickness.
• Flat and short learning curve for dominant and non-dominant hand.

Compared to Endostitch:
• Needle length could be shorter than Endostitch for same thickness of tissue.
• Could be used for small, or micro vessel anastomosis.
• Design simple than Endostitch, either hand part or tips part.

Business Opportunity:

Exclusive or non-exclusive license

IPStatus: Pat. Pend.

Terms and Conditions children's hospital
Site Designed and Developed by Genuine