Veress needle: Difference between revisions

Latest revision as of 11:40, 15 February 2025

Veress Needle[edit]

A Veress needle used in laparoscopic surgery

The Veress needle is a medical instrument used in laparoscopic surgery to create a pneumoperitoneum, which is the insufflation of the abdominal cavity with carbon dioxide gas. This procedure is essential for providing the necessary working space for surgeons to perform minimally invasive surgeries.

History[edit]

The Veress needle was developed by János Veres, a Hungarian internist, in the 1930s. Originally designed for the treatment of tuberculosis by inducing pneumothorax, the needle was later adapted for use in laparoscopic procedures.

Design[edit]

The Veress needle is a spring-loaded needle with a blunt inner stylet that retracts when the needle is pushed against tissue, allowing the sharp outer cannula to penetrate. Once the needle enters the peritoneal cavity, the inner stylet springs forward to protect internal organs from injury.

Usage[edit]

In laparoscopic surgery, the Veress needle is inserted through a small incision in the abdominal wall. The surgeon then attaches a gas insufflator to the needle to inflate the abdomen with carbon dioxide. This creates a working space by elevating the abdominal wall away from the internal organs.

Procedure[edit]

1. Insertion: The needle is inserted at an angle through the abdominal wall, usually at the umbilicus. 2. Insufflation: Carbon dioxide is introduced to create pneumoperitoneum. 3. Verification: Proper placement is confirmed by checking for free flow of gas and absence of resistance.

Complications[edit]

While generally safe, the use of a Veress needle can lead to complications such as:

Proper technique and experience are crucial to minimize these risks.

Alternatives[edit]

Alternatives to the Veress needle include the use of an open technique, such as the Hasson technique, which involves a small incision and direct placement of a trocar under direct vision.

Related pages[edit]

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 == Veress Needle ==
-[[File:Verres_Needle.jpg|thumb|A Veress needle used in laparoscopic surgery.]]
-The '''Veress needle''' is a medical instrument used for the creation of pneumoperitoneum in laparoscopic surgery. It is named after the Hungarian physician [[János Veres]], who developed the needle in 1938. The Veress needle is a spring-loaded needle that is designed to safely puncture the abdominal wall and introduce carbon dioxide gas into the peritoneal cavity, creating a working space for surgical procedures.
-== Design and Function ==
+[[File:Verres_Needle.jpg|thumb|right|A Veress needle used in laparoscopic surgery]]
-The Veress needle consists of an outer cannula and an inner stylet. The stylet is spring-loaded and retracts into the cannula when pressure is applied, allowing the sharp tip to puncture the abdominal wall. Once the needle is inside the peritoneal cavity, the stylet springs forward, covering the sharp tip and reducing the risk of injury to internal organs. The needle is then used to insufflate the abdomen with carbon dioxide gas, which elevates the abdominal wall and provides a clear view for the surgeon.
+The '''Veress needle''' is a medical instrument used in [[laparoscopic surgery]] to create a pneumoperitoneum, which is the insufflation of the [[abdominal cavity]] with [[carbon dioxide]] gas. This procedure is essential for providing the necessary working space for surgeons to perform minimally invasive surgeries.
-== Usage in Laparoscopic Surgery ==
+== History ==
+The Veress needle was developed by [[János Veres]], a Hungarian internist, in the 1930s. Originally designed for the treatment of [[tuberculosis]] by inducing pneumothorax, the needle was later adapted for use in laparoscopic procedures.
+== Design ==
-In [[laparoscopic surgery]], the Veress needle is typically inserted at the umbilicus, where the abdominal wall is thinnest. The surgeon makes a small incision and inserts the needle at a 45-degree angle. Once the needle is in place, carbon dioxide is introduced to create pneumoperitoneum. This step is crucial for providing the necessary space to manipulate instruments and visualize the surgical field.
+The Veress needle is a spring-loaded needle with a blunt inner stylet that retracts when the needle is pushed against tissue, allowing the sharp outer cannula to penetrate. Once the needle enters the peritoneal cavity, the inner stylet springs forward to protect internal organs from injury.
-The use of the Veress needle is a standard technique for establishing pneumoperitoneum, although alternative methods, such as the open (Hasson) technique, are also employed depending on the patient's condition and the surgeon's preference.
+== Usage ==
+In laparoscopic surgery, the Veress needle is inserted through a small incision in the abdominal wall. The surgeon then attaches a gas insufflator to the needle to inflate the abdomen with carbon dioxide. This creates a working space by elevating the abdominal wall away from the internal organs.
+=== Procedure ===
+. '''Insertion''': The needle is inserted at an angle through the abdominal wall, usually at the umbilicus.
+. '''Insufflation''': Carbon dioxide is introduced to create pneumoperitoneum.
+. '''Verification''': Proper placement is confirmed by checking for free flow of gas and absence of resistance.
 == Complications ==
-While the Veress needle is generally safe, complications can occur. These include injury to internal organs, such as the bowel or blood vessels, and subcutaneous emphysema if the needle is not properly positioned. Proper technique and experience are essential to minimize these risks.
+While generally safe, the use of a Veress needle can lead to complications such as:
-== History ==
+* [[Bowel perforation]]
+* [[Vascular injury]]
+* [[Subcutaneous emphysema]]
-The Veress needle was invented by [[János Veres]] in 1938. Originally designed for the treatment of tuberculosis by inducing pneumothorax, the needle was later adapted for use in laparoscopic surgery. Its design has remained largely unchanged, and it continues to be a vital tool in minimally invasive surgery.
+Proper technique and experience are crucial to minimize these risks.
-== Related Pages ==
+== Alternatives ==
-* [[Laparoscopic surgery]]
+Alternatives to the Veress needle include the use of an open technique, such as the [[Hasson technique]], which involves a small incision and direct placement of a trocar under direct vision.
-* [[Pneumoperitoneum]]
-* [[János Veres]]
-== References ==
+== Related pages ==
-* Soper, N. J., & Brunt, L. M. (1999). "Laparoscopic General Surgery: The Veress Needle." In: Soper, N. J., & Brunt, L. M. (Eds.), ''Laparoscopic Surgery: Principles and Procedures''. Springer.
+* [[Laparoscopy]]
-* Veres, J. (1938). "Neue Methode zur Behandlung des Spontan Pneumothorax." ''Deutsche Medizinische Wochenschrift''.
+* [[Minimally invasive surgery]]
+* [[Trocar]]
 [[Category:Surgical instruments]]