Specialty Instrument Sets: Orthopedic, Cardiovascular, and Laparoscopic

Specialty Instrument Sets: Orthopedic, Cardiovascular, and Laparoscopic

Surgical technologists must recognize the instruments in each specialty set, understand their purpose, and follow the safety rules that protect patients and the surgical team. This lesson covers three high-acuity specialties: orthopedic, cardiovascular, and laparoscopic surgery.

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Orthopedic Instrument Sets

Orthopedic surgery involves bone, joint, and connective tissue. The instruments are heavier and more robust than general surgery instruments because they must withstand the forces needed to cut, shape, and fix bone.

Cutting instruments include chisels (beveled on one side) and osteotomes (beveled on both sides). Both are driven by a mallet. Rasps have a rough, file-like surface used to smooth bone surfaces, particularly in joint replacement preparation. Reamers are cylindrical cutting tools used to enlarge the medullary canal of a bone so an implant stem can be seated.

Retractors in orthopedic sets tend to be rigid and angled to hold heavy tissue and bone out of the field. Common examples include the Hohmann retractor and the Army-Navy retractor.

Powered equipment is a defining feature of orthopedic sets. Pneumatic or electric oscillating saws, reciprocating saws, and drills are used to cut bone or insert screws and pins. Powered equipment requires specific safety habits:

• Confirm the power source (air pressure or electrical voltage) matches the equipment specification before connecting.
• Keep the powered instrument pointed away from all personnel when it is activated.
• Hand powered instruments to the surgeon with the tip directed away from the surgeon's body, or place them on the field and allow the surgeon to pick them up.
• Never activate a powered instrument yourself unless directed and trained to do so.
• Inspect cords and hoses for damage before the procedure begins.

Implants—plates, screws, nails, prostheses—are sterile and tracked on an implant log. The scrub must account for all implant packaging and verify implant size with the surgeon before opening.

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Cardiovascular Instrument Sets

Cardiovascular surgery works on the heart and great vessels, where bleeding must be precisely controlled. Instruments are designed to be atraumatic—gentle on delicate vessel walls—and must never crush or tear tissue.

Vascular clamps (such as DeBakey clamps) have fine, longitudinal serrations that grip vessels without lacerating them. They occlude blood flow so the surgeon can work on the vessel. Choosing the wrong size or type of clamp for a vessel can cause intimal damage or incomplete occlusion—a serious patient safety risk.

Bulldog clamps are small spring-loaded clamps used to temporarily occlude smaller vessels or coronary arteries. They come in angled and straight configurations. Handle them carefully; the spring tension is significant and the jaws can slip.

Vascular forceps (DeBakey tissue forceps) have longitudinal teeth arranged in multiple fine rows. They are used to handle vessel walls and grafts without crushing.

Vessel loops are soft silicone or latex strips passed around a vessel to retract or temporarily occlude it. They are not instruments but are critical accessory items counted and documented.

Cannulae and tunnelers are used in bypass procedures to divert blood into a heart-lung machine and to route grafts through tissue planes. Cannulae must be the correct size for the vessel or chamber and are connected securely to tubing before flow is established.

Safety rules for cardiovascular sets:

• Clamps must be inspected before the procedure: the jaws must close evenly, the ratchet must lock securely, and the serrations must be intact. A clamp that does not close fully can allow hemorrhage.
• Never mix vascular and general surgery clamps. Crushing clamps applied to a vessel can cause devastating injury.
• Pass all sharp cannulae with tip protected or using a neutral zone technique.

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Laparoscopic Instrument Sets

Laparoscopic (minimally invasive) surgery is performed through small incisions using a camera and long, slender instruments. The surgical field is visualized on a monitor rather than directly.

Trocars are hollow cannulae inserted through the abdominal wall. They provide a port of entry for instruments and the telescope. The sharp obturator inside the trocar pierces the tissue; it is removed after insertion, leaving the sleeve in place.

The Veress needle is used to create the pneumoperitoneum before trocar insertion. It has a spring-loaded blunt inner stylet that retracts when resistance is met (tissue) and extends when the needle enters the open abdominal cavity, providing a measure of safety against organ puncture.

Insufflation fills the peritoneal cavity with carbon dioxide gas, elevating the abdominal wall away from organs to create working space. The insufflator machine controls flow rate and intra-abdominal pressure. The scrub must confirm that gas tubing is connected to the correct trocar port and that the surgeon has confirmed correct placement before insufflation begins.

Telescopes (laparoscopes) are rigid rod-lens systems that transmit the image to the camera. A 0° telescope provides a straight-ahead view; a 30° telescope provides an angled view useful for looking around structures. Telescopes are expensive and fragile—handle them with both hands and never place them where they can roll off the field.

Laparoscopic scissors, graspers, and dissectors are long-shafted instruments passed through trocars. Many are connected to electrosurgical energy. Insulation failure is a critical safety concern: if the insulating coating of a laparoscopic instrument cracks or is absent, electrical current can arc to adjacent tissue outside the surgeon's view, causing invisible burns to bowel or vessels. Before every case, inspect each insulated instrument with an insulation-testing device and remove any instrument that fails the test from the sterile field immediately.

Additional laparoscopic safety rules:

• Keep telescope optics clean using warm saline or an anti-fog solution before insertion.
• Account for all trocar caps, reducers, and insufflation tubing during the count.
• When passing laparoscopic instruments, orient the handle toward the surgeon and confirm the instrument is in the closed, safe position.

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Across All Three Specialties

Regardless of specialty, the scrub technologist is responsible for knowing every item on the sterile field, maintaining sterile technique, completing all counts correctly, and speaking up immediately when a safety concern is identified. Patient safety depends on the surgical technologist's vigilance before, during, and after each procedure.