Basic surgical kit
Júlia Massanés Pujol
Scale for Trauma wounds have an extremely high incidence in crisis zones, and techniques such including suturing, wound retraction and tissue clamping are integral for treating these wounds. The fact that the device can perform these three distinct roles is highly advantageous, as it can provide ample surgical utility with low printing time and costs. To find out more about each modality of the Triage Tri-Tool, please see the descriptions below.
This is the primary function of the tool. It has fine teeth at its tip, with alternating grain to provide complete closure, providing sufficient grip for standard suturing needles. The tips are triangular, with rounded edges to prevent damage to tissue. Each scissor has a curved design to allow better force distribution. The handle has multiple holes, allowing for different grip styles based on preference. The handle has a concave curve that permits better closure and decreases both material used and time printing.
When the device is rotated 360° it realizes the surgical retractor modality. The curved shape of scissors allows sufficient force distribution to prevent failure. The outer grip position of the handle allows fine control of the retractor, and for large incisions, the outside of the handle can be used to provide large apertures for surgery. A separate clip, providing a locking mechanism can be printed, providing stability and reliability in surgery.
In the standard needle-holder position, the handle can be used to clamp an artery, other tissue, or a medical device and the locking mechanism clip can provide stability to the clamp for this purpose.
Basic surgical kit
For both local and general surgeries, tools such as scalpels, forceps and retractors are essential for cutting, grasping and opening, respectively. Allowing effective versions of these tools to be 3D-printed could provide basic medical care for people in crisis zones who would otherwise have a shortage of medical supplies.
Scalpels are used in many surgical procedures to perform the incision of tissue and cadaveric dissection. They are made of two parts, a handle and a disposable sharp blade.
The forceps are an instrument composed of a handle and a double tip, used to grasp, hold, handle or compress tissues, fibres, needles and sterile dressings.
A retractor is a surgical instrument used to separate the edges of a wound or surgical incision, with the aim to allow access to deeper tissues and organs.
Haemorrhage is a major cause of morbidity and mortality, particularly in areas without access to primary healthcare centres. The haemostatic clamp can be used to prevent bleeding from external wounds, and can be operated by a civilian in a simple manner. The fast action and ease of use of this device means that it could prevent death in patients with acute trauma wounds.
To apply the clamp, place the teeth of the clamp face on the skin approximately 5mm from the wound edges. Press the clamp down gently with your palm. To close the clamp, place your thumb and middle finger into the grooves on each side of the locking clip and apply pressure till the clamp is fully locked.
To release the clamp, grab the inner edge of the locking clip and pull it apart (green arrows). If the clamp is locked too tightly, use a retractor to widen the clip slightly (blue arrows) and then pull it apart (green arrows).